U.S. patent application number 16/547130 was filed with the patent office on 2019-12-12 for refrigerator.
The applicant listed for this patent is Panasonic Intellectual Property Management Co., Ltd.. Invention is credited to Yoichi ABIRU, Tatsuya KAWASAKI, Itsuo TANAKA, Masashi YUASA.
Application Number | 20190376736 16/547130 |
Document ID | / |
Family ID | 63447858 |
Filed Date | 2019-12-12 |
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United States Patent
Application |
20190376736 |
Kind Code |
A1 |
KAWASAKI; Tatsuya ; et
al. |
December 12, 2019 |
REFRIGERATOR
Abstract
A refrigerator supplies cool air generated by a cooler to a
plurality of storage compartments by cooling fan (27). Cooling fan
(27) is formed of multi-blade fan (27a) which blows cool air in a
circumferential direction. Guide case (33) of cooling fan (27) has
discharge opening portion (35) which supplies cool air to the
plurality of storage compartments at one portion.
Inventors: |
KAWASAKI; Tatsuya; (Shiga,
JP) ; YUASA; Masashi; (Shiga, JP) ; ABIRU;
Yoichi; (Osaka, JP) ; TANAKA; Itsuo; (Shiga,
JP) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Panasonic Intellectual Property Management Co., Ltd. |
Osaka |
|
JP |
|
|
Family ID: |
63447858 |
Appl. No.: |
16/547130 |
Filed: |
August 21, 2019 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
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PCT/JP2018/006976 |
Feb 26, 2018 |
|
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16547130 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
F25D 17/045 20130101;
F25D 2317/0683 20130101; F25D 2331/803 20130101; F25D 2317/067
20130101; F25D 2317/0664 20130101; F25D 25/02 20130101; F25D 17/065
20130101; F25D 23/061 20130101; F25D 17/067 20130101; F25D 2317/068
20130101 |
International
Class: |
F25D 23/06 20060101
F25D023/06; F25D 17/06 20060101 F25D017/06; F25D 25/02 20060101
F25D025/02 |
Foreign Application Data
Date |
Code |
Application Number |
Mar 8, 2017 |
JP |
2017-043909 |
Claims
1. A refrigerator comprising: a lower storage compartment; an upper
storage compartment located upper than the lower storage
compartment in the refrigerator; a cooling compartment located
closer to a back surface of the refrigerator than the lower storage
compartment and the upper storage compartment; a cooler disposed in
the cooling compartment; a wall surface unit that partitions an
inside of the refrigerator into the cooling compartment and a set
of the lower storage compartment and the upper storage compartment,
the wall surface unit having a first surface facing the cooling
compartment, a second surface facing the lower storage compartment,
and a third surface facing the upper storage compartment; a cooling
fan disposed on the first surface of the wall surface unit, the
cooling fan being configured to supply cool air generated by the
cooler in a circumferential direction; a damper device disposed on
the first surface of the wall surface unit, the damper device
having at least a first opening portion for supplying the cool air
to the lower storage compartment, and a second opening portion for
supplying the cool air to the upper storage compartment; a first
blow-off port that is formed in the second surface of the wall
surface unit, the first blow-off port being configured to supply
cool air to the lower storage compartment; a second blow-off port
that is formed in the third surface of the wall surface unit, the
second blow-off port being configured to supply cool air to the
upper storage compartment; a first discharge air passage that is
formed in the wall surface unit, the first discharge air passage
allowing the first opening portion and the first blow-off port to
communicate with each other; and a second discharge air passage
that is formed in the wall surface unit, the second discharge air
passage allowing the second opening portion and the first blow-off
port to communicate with each other.
2. The refrigerator according to claim 1, wherein the damper device
is disposed above the cooling fan.
3. The refrigerator according to claim 2, wherein the damper device
and the cooling fan are covered by an integrally formed case.
4. The refrigerator according to claim 3, wherein a portion of the
integrally formed case which covers an outer periphery of the
cooling fan is formed in an Archimedean spiral form.
5. A wine cellar for preserving wines, the wine cellar comprising:
a lower storage compartment; an upper storage compartment located
upper than the lower storage compartment in the wine cellar; a
cooling compartment located closer to a back surface of the wine
cellar than the lower storage compartment and the upper storage
compartment; a cooler disposed in the cooling compartment; a wall
surface unit that partitions an inside of the refrigerator into the
cooling compartment and a set of the lower storage compartment and
the upper storage compartment, the wall surface unit having a first
surface facing the cooling compartment, a second surface facing the
lower storage compartment, and a third surface facing the upper
storage compartment; a cooling fan disposed on the first surface of
the wall surface unit, the cooling fan being configured to supply
cool air generated by the cooler in a circumferential direction; a
damper device disposed on the first surface of the wall surface
unit, the damper device having at least a first opening portion for
supplying the cool air to the lower storage compartment, and a
second opening portion for supplying the cool air to the upper
storage compartment; a first blow-off port that is formed in the
second surface of the wall surface unit, the first blow-off port
being configured to supply cool air to the lower storage
compartment; a second blow-off port that is formed in the third
surface of the wall surface unit, the second blow-off port being
configured to supply cool air to the upper storage compartment; a
first discharge air passage that is formed in the wall surface
unit, the first discharge air passage allowing the first opening
portion and the first blow-off port to communicate with each other;
and a second discharge air passage that is formed in the wall
surface unit, the second discharge air passage allowing the second
opening portion and the first blow-off port to communicate with
each other.
6. The wine cellar according to claim 5, wherein the damper device
is disposed above the cooling fan.
7. The wine cellar according to claim 6, wherein the damper device
and the cooling fan are covered by an integrally formed case.
8. The wine cellar according to claim 7, wherein a portion of the
integrally formed case which covers an outer periphery of the
cooling fan is formed in an Archimedean spiral form.
9. The wine cellar according to claim 5, further comprising a door
which covers both the lower storage compartment and the upper
storage compartment.
10. The wine cellar according to claim 9, further comprising a
glass plate unit which allows a user to visually recognize an
inside of the lower storage compartment and an inside of the upper
storage compartment without opening the door.
11. The wine cellar according to claim 9, further comprising an
operation portion which allows a user to perform setting of a
temperature of the lower storage compartment and setting of a
temperature of the upper storage compartment is mounted on the
door.
Description
TECHNICAL FIELD
[0001] The present disclosure relates to a refrigerator preferably
used for preservation of wines or the like, and more particularly
to a refrigerator such as a wine cellar that is preferably used in
a state that the wine cellar is built in an integrated kitchen
configuration or the like.
BACKGROUND ART
[0002] In general, it is often the case where a refrigerator used
for storing and preserving wine bottles and cans, for example, a
wine cellar is used in a state that the wine cellar is built in an
integrated kitchen configuration or the like.
[0003] Although depending on kinds of wines which are preserved in
the wine cellars, that is, white wine, red wine and the like, it is
considered preferable to preserve wines in such a wine cellar at a
temperature of approximately 14.degree. C. to 18.degree. C.
inclusive, and a temperature suitable for drinking is 7.degree. C.
to 9.degree. C. inclusive.
[0004] Accordingly, among wine cellars for preserving wine bottles,
there is a wine cellar having a plurality of storage compartments
which differ from each other in preservation temperature zone. This
type of wine cellar is configured such that cool air cooled by a
cooling compartment in a cooling compartment disposed on a body
back portion is supplied to respective storage compartments by a
cooling fan so that wines stored in the respective storage
compartments are cooled and preserved at predetermined temperatures
(for example, see PTL 1).
[0005] FIG. 16 shows a conventional wine cellar described in PTL 1.
Conventional wine cellar 100 shown in FIG. 16 is an electronic
cooling type wine cellar, and wine cellar 100 has a plurality of
storage compartments 102, 103 in body 101. Such conventional wine
cellar 100 is configured such that cool air is generated by coolers
in cooling compartments 104 disposed on back surface portions of
storage compartments 102, 103, and the generated cool air is
supplied to storage compartments 102, 103 by cooling fans 106 so
that storage compartments 102, 103 are respectively cooled.
[0006] Since conventional wine cellar 100 has the plurality of
storage compartments 102, 103 which differ from each other in
preservation temperature zone, such conventional wine cellar 100
has an advantage that wine cellar 100 is user friendly. However,
conventional wine cellar 100 requires a plurality of coolers and a
plurality of cooling fans 106 corresponding to storage compartments
102, 103 and hence, wine cellar 100 becomes expensive. Further, a
propeller fan which supplies air frontward is used as cooling fan
106 and hence, it is necessary to provide an air passage portion
extending frontward from a discharge port of cooling fan 106.
Accordingly, in the wine cellar, a dimension of cooling compartment
104 in a front-back direction is increased. On the other hand, in
an under-counter-type wine cellar which is built in an integrated
kitchen configuration and where a depth dimension is restricted,
storage compartments 102, 103 having small depth dimensions are
required. Accordingly, such wine cellar has a drawback that a
storage capacity of the wine cellar becomes small relative to a
dimension of an external profile of the body.
[0007] To overcome such a drawback, the configuration is considered
where one cooler is used and cool air generated by the cooler is
supplied to respective storage compartments in a distributed
manner, and a cooling fan is formed using a multi-blade fan which
can supply air in a circumferential direction and can reduce its
dimension in a front-back direction (for example, see PTL 2).
[0008] FIG. 17A and FIG. 17B show a cool air supply configuration
of a conventional refrigerator described in PTL 2. Although
conventional refrigerator 200 described in PTL 2 is not like a wine
cellar, the number of coolers used in refrigerator 200 is one.
Cooling fan 206 is formed using a multi-blade fan which can supply
air in a circumferential direction and can reduce its dimension in
the front-back direction compared to a propeller fan which supplies
air frontward. Further, discharge ports 207, 208 are disposed on
and along left and right side walls of a fan casing of the
multi-blade fan. Ducts 209, 210 which communicate with the
respective storage compartments are connected to discharge ports
207, 208 respectively.
[0009] With the use of the cool air supply configuration described
in PTL 2, the plurality of storage compartments can be cooled by
one cooler. Accordingly, it is possible to provide a refrigerator
at a low cost. Further, with the use of the multi-blade fan, a
dimension in a front-back direction of a cooling compartment
portion can be reduced and hence, a storage capacity of the storage
compartment can be increased by an amount of reduction in dimension
of the cooling compartment portion.
[0010] However, in the conventional cool air supply configuration
described in PTL 2, it is necessary to provide the plurality of
discharge ports 207, 208 to cooling fan 206. Further, it is
necessary to provide the configuration where cool air from cooling
fan 206 is supplied along a curved side wall of cooling fan 206.
Accordingly, a distance between ducts 209, 210 which are connected
to the plurality of respective storage compartments is increased.
Accordingly, although the cool air supply configuration described
in PTL 2 is applicable to the case where the cool air supply
configuration is used in a refrigerator which forms a single body,
the configuration cannot be directly used as an under counter-type
wine cellar where the wine cellar is built in a lower portion of an
integrated kitchen configuration. That is, in the case of the
under-counter-type wine cellar, in view of the relationship with
other devices built in the lower portion of the integrated kitchen
configuration, a dimension of the wine cellar in the width
direction is also restricted. Accordingly, a refrigerator having
the conventional cool air supply configuration described in PTL 2
cannot be used as the under-counter-type wine cellar since a
lateral width of the refrigerator is excessively large. Further, in
the conventional cool air supply configuration, amounts of cool air
supplied to the plurality of respective storage compartments are
not controlled and hence, it is difficult to perform appropriate
cooling for respective storage compartments.
CITATION LIST
Patent Literature
[0011] PTL 1: Unexamined Japanese Patent Publication No.
H11-159910
[0012] PTL 2: Unexamined Japanese Patent Publication No.
2007-309633
SUMMARY OF THE INVENTION
[0013] The present disclosure has been made in view of the
above-mentioned drawbacks, and it is an object of the present
disclosure to provide a refrigerator which can increase a storage
capacity while suppressing a lateral width dimension of a body of
the refrigerator within a predetermined dimension.
[0014] To be more specific, a refrigerator according to one aspect
of the present disclosure includes: a refrigerator body; a
plurality of storage compartments which are disposed on the
refrigerator body; a cooling compartment located closer to a back
surface than the plurality of storage compartments in the
refrigerator body; a cooler disposed in the cooling compartment;
and a cooling fan which supplies cool air generated by the cooler
to the plurality of storage compartments. The cooling fan is formed
of a multi-blade fan which supplies air in a circumferential
direction. A guide case of the cooling fan has a discharge opening
portion for supplying cool air to the plurality of storage
compartments. The discharge opening portion is preferably disposed
on one predetermined portion of the guide case of the cooling
fan.
[0015] With such a configuration, a distance between ducts
connected to the cooling fan can be narrowed and hence, it is
possible to suppress a lateral width dimension of the refrigerator
body within a predetermined dimension. Further, by reducing a
dimension in a front-back direction of the cooling compartment
where the cooler and the cooling fan are disposed, a dimension in
the front-back direction of the storage compartment can be
increased. With such a configuration, a storage capacity of the
storage compartment can be increased without causing large-sizing
of the refrigerator body.
[0016] The refrigerator according to one aspect of the present
disclosure may further include a damper device which covers the
discharge opening portion. In this case, the damper device may
include: a first opening portion; a first flap which opens/closes
the first opening portion; a second opening portion disposed
adjacently to the first opening portion; and a second flap which
opens/closes the second opening portion.
[0017] With such a configuration, amounts of cool air supplied to
the plurality of respective storage compartments can be controlled
so that the respective storage compartments can be cooled at
predetermined temperatures with certainty. Accordingly, it is
possible to provide a refrigerator which can achieve a high degree
cooling control, has a large storage capacity, and is minimally
affected by restriction in installing the refrigerator.
[0018] In the refrigerator according to one aspect of the present
disclosure, the guide case of the cooling fan and the case of the
damper device may be integrally formed with each other.
[0019] With such a configuration, it is possible to realize the
reduction of the number of parts, and it is also possible to
prevent leakage of cool air from a connection portion between the
guide case of the cooling fan and the case of the damper device.
Accordingly, it is possible to realize both the simplification of
the configuration and the enhancement of quality of the
refrigerator simultaneously.
[0020] In the refrigerator according to one example of the present
disclosure, the guide case may have a side wall which covers an
outer periphery of the multi-blade fan in a rotational direction.
In this case, the side wall may be formed in an Archimedean spiral
form using a rotary shaft of the multi-blade fan as the center of
axis of the spiral (a shape where a diameter is gradually increased
in a rotational direction of the rotary shaft with the rotary shaft
of the multi-blade fan set as the center).
[0021] With such a configuration, air supply loss of cool air
discharged from the multi-blade fan can be minimized thus realizing
efficient cooling.
[0022] In the refrigerator according to one example of the present
disclosure, the rotary shaft of the multi-blade fan of the cooling
fan may be disposed in an offset manner toward one opening portion
positioned on a rotational direction side of the cooling fan out of
the first opening portion and the second opening portion.
[0023] With such a configuration, although cool air from the
multi-blade fan is liable to be supplied in a direction opposite to
the fan rotational direction such that a supply amount of cool air
to such a side is larger than a supply amount to the other side,
cool air can be supplied to the first opening portion and the
second opening portion substantially uniformly thus efficiently
cooling the plurality of storage compartments.
[0024] The refrigerator according to one example of the present
disclosure may include a first blow-off air passage which
communicates with the first opening portion and has a first
blow-off port, and a second blow-off air passage which communicates
with the second opening portion and has a second blow-off port. In
this case, the refrigerator according to one example of the present
disclosure may be configured such that, out of the first blow-off
air passage and the second blow-off air passage, one blow-off air
passage on a side where a larger amount of cool air is supplied
from the cooling fan is longer than the other blow-off air
passage.
[0025] With such a configuration, the air passage which
communicates with the opening portion of the damper device on a
side where a larger amount of cool air is supplied is longer and
has a larger resistance. Accordingly, an amount of cool air blown
off from the first blow-off air passage and an amount of cool air
blown off from the second blow-off air passage can be made
substantially equal to each other and hence, the plurality of
respective storage compartments can be efficiently cooled.
[0026] The refrigerator according to one example of the present
disclosure may further include a wall surface unit which partitions
the inside of the refrigerator into the plurality of storage
compartments and the cooling compartment. In this case, the wall
surface unit may have: a cooling compartment side wall surface
plate; and a storage compartment side wall surface plate. The wall
surface unit may be configured to include: a blow-off air passage
that is formed between the cooling compartment side wall surface
plate and the storage compartment side wall surface plate and
communicates with the plurality of storage compartments; the
cooling fan and the damper device which are mounted on a surface of
the cooling compartment side wall surface plate on a cooling
compartment side, and a through hole that is formed in the cooling
compartment side wall surface plate and that allows the damper
device and the blow-off air passage to communicate with each
other.
[0027] With such a configuration, cool air from the cooling fan is
directly supplied to the blow-off air passage through the through
hole formed between the damper device mounted on the cooling
compartment side wall surface plate and the air passage.
Accordingly, compared to the configuration where the cooling fan
and the blow-off air passage are connected to each other by way of
duct members or the like, a distance between the cooling fan and
the blow-off air passage can be minimized with respect to their
positional relationship in the front-back direction and in the
vertical direction. With such a configuration, storage capacities
of the storage compartments can be increased.
[0028] In the refrigerator according to one example of the present
disclosure, the wall surface unit may further include a return air
passage for cool air returned from the plurality of storage
compartments between the cooling compartment side wall surface
plate and the storage compartment side wall surface plate. In this
case, the return air passage is divided in two in the lateral
direction by a blow-off air passage for cool air to the storage
compartment positioned on a lower side out of the plurality of
storage compartments. Return ports for cool air of the plurality of
storage compartments may be provided to left and right end portions
of the laterally-divided return air passages.
[0029] With such a configuration, cool air which flows toward the
return air passage from the storage compartments through the return
ports is distributed to both side portions of the storage
compartments. Accordingly, cool air can be made to flow
substantially uniformly in the storage compartments. With such a
configuration, non-uniformity of cooling can be suppressed so that
the plurality of storage compartments can be cooled substantially
uniformly.
[0030] In the refrigerator according to one example of the present
disclosure, the wall surface unit may include a first blow-off air
passage and a second blow-off air passage for supplying cool air to
the plurality of respective storage compartments. In this case, at
least one of a portion where the first blow-off air passage and the
second blow-off air passage are disposed adjacently to each other
and a portion where the return air passage and the first blow-off
air passage are disposed adjacently to each other may be formed of
a multi-layered wall having a heat insulation layer.
[0031] With such a configuration, even when the first blow-off air
passage and the second blow-off air passage are disposed adjacently
to each other, the first blow-off air passage and the return air
passage are disposed adjacently to each other, or the second
blow-off air passage and the return air passage are disposed
adjacently to each other, the heat movement between both air
passages can be minimized thus realizing efficient cooling.
BRIEF DESCRIPTION OF DRAWINGS
[0032] FIG. 1 is an external perspective view of a refrigerator
according to one example of an exemplary embodiment of the present
disclosure.
[0033] FIG. 2 is a half-cut perspective view of the refrigerator
according to one example of the exemplary embodiment of the present
disclosure.
[0034] FIG. 3 is a perspective view of the refrigerator according
to one example of the exemplary embodiment of the present
disclosure as viewed from a bottom surface side in a state where a
door of the refrigerator is opened.
[0035] FIG. 4 is a perspective view of an inner box of the
refrigerator according to one example of the exemplary embodiment
of the present disclosure.
[0036] FIG. 5 is a perspective view of an indoor illumination unit
mounted on an inner-box-side surface of the refrigerator according
to one example of the exemplary embodiment of the present
disclosure.
[0037] FIG. 6 is a cross-sectional view of the indoor illumination
unit mounted on the inner-box-side surface of the refrigerator
according to one example of the exemplary embodiment of the present
disclosure taken along line 6-6 in FIG. 5.
[0038] FIG. 7 is a half-cut perspective view of an indoor
illumination unit mounted on a ceiling surface of the refrigerator
according to one example of the exemplary embodiment of the present
disclosure.
[0039] FIG. 8 is an exploded perspective view showing a
refrigerator body, a wall surface unit, and a door of the
refrigerator according to one example of the exemplary embodiment
of the present disclosure.
[0040] FIG. 9 is an exploded perspective view of the wall surface
unit of the refrigerator according to one example of the exemplary
embodiment of the present disclosure as viewed from a storage
compartment side.
[0041] FIG. 10 is an exploded perspective view of the wall surface
unit of the refrigerator according to one example of the exemplary
embodiment of the present disclosure as viewed from a cooling
compartment side.
[0042] FIG. 11 is a perspective view of the wall surface unit of
the refrigerator according to one example of the exemplary
embodiment of the present disclosure as viewed from a cooling
compartment side.
[0043] FIG. 12 is a cross-sectional view of the wall surface unit
of the refrigerator according to one example of the exemplary
embodiment of the present disclosure taken along line 12-12 in FIG.
11.
[0044] FIG. 13 is a front view of the wall surface unit of the
refrigerator according to one example of the exemplary embodiment
of the present disclosure as viewed from a storage compartment
side.
[0045] FIG. 14 is a perspective view for describing mounting of a
cooling fan on the wall surface unit of the refrigerator according
to one example of the exemplary embodiment of the present
disclosure.
[0046] FIG. 15 is an exploded perspective view of the wall surface
unit of the refrigerator according to one example of the exemplary
embodiment of the present disclosure.
[0047] FIG. 16 is a cross-sectional view showing a conventional
refrigerator.
[0048] FIG. 17A is a front view showing a cool air supply
configuration of another conventional refrigerator.
[0049] FIG. 17B is a side view of the cool air supply configuration
of the other conventional refrigerator.
DESCRIPTION OF EMBODIMENT
[0050] An exemplary embodiment of the present disclosure will be
described hereinafter with reference to the drawings. It must be
noted that the following exemplary embodiment do not limit the
present disclosure.
Exemplary Embodiment
[0051] First, the entire configuration of a refrigerator according
to one example of an exemplary embodiment of the present disclosure
is described with reference to FIG. 1 to FIG. 7.
[0052] FIG. 1 is an external perspective view of the refrigerator
according to one example of the exemplary embodiment of the present
disclosure. FIG. 2 is a half-cut perspective view of the
refrigerator according to one example of the exemplary embodiment
of the present disclosure. FIG. 3 is a perspective view of the
refrigerator according to one example of the exemplary embodiment
of the present disclosure as viewed from a bottom surface side in a
state where a door of the refrigerator is opened. FIG. 4 is a
perspective view of an inner box of the refrigerator according to
one example of the exemplary embodiment of the present disclosure.
FIG. 5 is a perspective view of an indoor illumination unit mounted
on an inner-box-side surface of the refrigerator according to one
example of the exemplary embodiment of the present disclosure. FIG.
6 is a cross-sectional view taken along a line 6-6 in FIG. 5. FIG.
7 is a half-cut perspective view of an indoor illumination unit
mounted on a ceiling surface of the refrigerator according to one
example of the exemplary embodiment of the present disclosure.
[0053] In FIG. 1 to FIG. 7, refrigerator 80 according to one
example of an exemplary embodiment of the present disclosure
includes refrigerator body 1. In refrigerator body 1, partition
plate 2 is provided. Partition plate 2 partitions an inside of
refrigerator body 1 into two compartments, that is, upper and lower
storage compartments 3, 4. In respective storage compartments 3, 4,
shelves 5 on which wine bottles or the like are placed are
disposed. Partition plate 2 may have or may not have a heat
insulating material in the inside thereof.
[0054] As shown in FIG. 2, refrigerator body 1 is formed of:
metal-made (for example, iron-made) outer box 66 having an open
front side; inner box 7 made of a hard resin (for example, an
acrylonitrile butadiene styrene (ABS) resin); and a foamed heat
insulating material (not shown in the figure) such as hard urethane
which is filled by foaming between outer box 66 and inner box 7. As
shown in FIG. 3, illumination units 8, 9 for illuminating the
inside of storage compartments 3, 4 are mounted on both left and
right side portions (hereinafter simply referred to as both side
portions) and a ceiling surface of refrigerator body 1. As shown in
FIG. 4, illumination-use openings 10 in which illumination units 8,
9 are respectively stored are formed in inner box 7.
[0055] As shown in FIG. 4 to FIG. 6, out of illumination units 8,
9, each of illumination units 8 mounted on both side portions of
refrigerator body 1 is formed of: pedestal 11 mounted on an inner
side of illumination-use opening 10 of inner box 7; illumination
substrate 82 mounted on pedestal 11; LEDs 13 which are mounted on
illumination substrate 82 and are arranged in a row in a vertical
direction; and cover 14 which covers front surfaces of LEDs 13.
[0056] As shown in FIG. 5, cover 14 is formed in an approximately L
shape in cross section. As shown in FIG. 6, cover 14 is routed
around front end surface 7a of inner box 7 and is disposed so as to
cover front end surface 7a. Cover 14 has front surface cover
portion 14a, and side surface cover portion 14b. As shown in FIG.
6, side surface cover portion 14b has engaging ribs 15. As shown in
FIG. 6, engaging ribs 15 are mounted in an inclined manner toward a
side opposite to a front end surface 7a side. Cover 14 is mounted
on the refrigerator by press-fitting engaging ribs 15 into holding
holes 16 formed in pedestal 11. With such a configuration, in cover
14, front surface cover portion 14a is brought into pressure
contact with front end surface 7a of inner box 7.
[0057] On the other hand, as shown in FIG. 7, illumination unit 9
mounted on the ceiling surface of refrigerator body 1 is assembled
to recessed portion 9a which is formed on a front end portion of
the ceiling surface of inner box 7 of refrigerator body 1 (a
portion close to the opening of refrigerator body 1). The pedestal
of illumination unit 9 is formed to have a wide lateral width so as
to form the ceiling wall surface of refrigerator body 1. A cover of
illumination unit 9 has a flat surface shape, for example.
[0058] Front surfaces of respective storage compartments 3, 4 of
refrigerator body 1 are formed in an openable and closeable manner
by rotatable door 20 (see FIG. 3). As shown in FIG. 2, door 20 has
center plate 21 which is formed of a triple-layered glass plate
unit in which a heat insulation gas such as an argon gas is sealed
or the like. Door 20 is formed such that the inside of storage
compartments 3, 4 can be visually recognized from the outside while
acting as a heat insulation door. Grip 22 is mounted on door
20.
[0059] At the substantially center of an upper portion of door 20
in the lateral direction, operation display portion 23 (see FIG. 8)
is disposed. Temperatures of respective storage compartments 3, 4
are set and displayed on operation display portion 23. An operation
of operation display portion 23 is performed by touching operation
display portion 23 from a front surface side of door 20. Contents
displayed on operation display portion 23 can be visually
recognized from a front side.
[0060] As shown in FIG. 2, cooling compartment 25 is disposed on a
back surface side in refrigerator body 1. In cooling compartment
25, cooler 26 and cooling fan 27 are disposed. A machine
compartment 28 is disposed below cooling compartment 25 on a lower
portion of refrigerator body 1. Due to evaporation of refrigerant
which is compressed by compressor 29 assembled to machine
compartment 28, cool air is generated by cooler 26 in cooling
compartment 25. Cooling fan 27 supplies cool air generated in
cooling compartment 25 to respective storage compartments 3, 4 and,
thereafter, the cool air is recovered to cooling compartment 25,
and is circulated to respective storage compartments 3, 4
again.
[0061] Hereinafter, a cool air supply configuration of refrigerator
80 according to one example of the exemplary embodiment of the
present disclosure is described with reference to FIG. 8 to FIG.
15.
[0062] FIG. 8 is an exploded perspective view of the refrigerator
according to one example of the exemplary embodiment of the present
disclosure. FIG. 9 is an exploded perspective view of the wall
surface unit of the refrigerator according to one example of the
exemplary embodiment of the present disclosure as viewed from a
storage compartment side. FIG. 10 is an exploded perspective view
of the wall surface unit of the refrigerator according to one
example of the exemplary embodiment of the present disclosure as
viewed from a cooling compartment side. FIG. 11 is a perspective
view of the wall surface unit of the refrigerator according to one
example of the exemplary embodiment of the present disclosure as
viewed from a cooling compartment side. FIG. 12 is a
cross-sectional view of the refrigerator according to one example
of the exemplary embodiment of the present disclosure taken along
line 12-12 in FIG. 11. FIG. 13 is a front view of the wall surface
unit of the refrigerator according to one example of the exemplary
embodiment of the present disclosure as viewed from a storage
compartment side. FIG. 14 is a perspective view for describing
mounting of the cooling fan on the wall surface unit of the
refrigerator according to one example of the exemplary embodiment
of the present disclosure. A part (a) of FIG. 14 is a perspective
view showing a state before the cooling fan is mounted on the wall
surface unit of the refrigerator according to one example of the
exemplary embodiment of the present disclosure. A part (b) of FIG.
14 is a perspective view showing a state after the cooling fan is
mounted on the wall surface unit of the refrigerator according to
one example of the exemplary embodiment of the present disclosure.
FIG. 15 is an exploded perspective view of the wall surface unit of
the refrigerator according to one example of the exemplary
embodiment of the present disclosure.
[0063] In refrigerator 80 according to one example of the exemplary
embodiment of the present disclosure, the air passages for
supplying cool air to respective storage compartments 3, 4 are
formed in wall surface unit 30 that partitions the inside of
refrigerator 80 into respective storage compartments 3, 4, and
cooling compartment 25 (see FIG. 8 and FIG. 9).
[0064] As shown in FIG. 9, FIG. 10 and the like, wall surface unit
30 is constituted by fitting engagement between storage compartment
side wall surface plate 31 which opposedly faces respective storage
compartments 3, 4 and cooling compartment side wall surface plate
32 which opposedly faces cooling compartment 25.
[0065] Cooling fan 27 is mounted on a portion of cooling
compartment side wall surface plate 32 which opposedly faces
storage compartment 3 on an upper side of a cooling compartment 25
side surface (hereinafter referred to as upper storage compartment
3). Cooling fan 27 is constituted of a multi-blade fan which
supplies air in a circumferential direction such as a blower fan.
Cooling fan 27 is configured such that multi-blade fan 27a having a
plurality of blades disposed in parallel to a rotary shaft is
covered by guide case 33. Guide case 33 has a main surface portion
which covers a cooling compartment 25 side surface of multi-blade
fan 27a, and a side wall portion (side wall) which surrounds an
outer periphery of multi-blade fan 27a in a rotational direction.
Suction opening portion 34 is formed in a main surface portion of
guide case 33. Discharge opening portion 35 is formed in an upper
portion of the side wall portion.
[0066] A main portion of the side wall portion is formed in an
Archimedean spiral form where a diameter is gradually increased in
a rotational direction of the rotary shaft about the rotary shaft
of multi-blade fan 27a.
[0067] Damper device 36 is mounted on discharge opening portion 35
of cooling fan 27. As shown in FIG. 9, damper device 36 includes
damper frame body 39 in which first opening portion 37 and second
opening portion 38 are formed, and first flap 40 and second flap 41
which are driven by a drive source (not shown in the figure) such
as a motor thus opening/closing first opening portion 37 and second
opening portion 38 respectively.
[0068] First opening portion 37 and second opening portion 38 of
damper device 36 are disposed adjacently to each other with the
drive source interposed therebetween. First opening portion 37 and
second opening portion 38 are positioned corresponding to discharge
opening portion 35 of cooling fan 27. In the present exemplary
embodiment, as shown in FIG. 10, FIG. 11 and the like, case 42 of
damper device 36 is integrally formed on an upper portion of guide
case 33 of cooling fan 27 thus covering multi-blade fan 27a and
damper device 36. That is, cooling fan 27 and damper device 36 are
integrated with each other and are directly connected to each
other.
[0069] As indicated by an arrow in FIG. 13, the rotational
direction of the rotary shaft of multi-blade fan 27a is a
counterclockwise direction as viewed from a storage compartment 3,
4 side. That is, the rotary shaft is rotated from a first opening
portion 37 side described later toward a second opening portion 38
side. First opening portion 37 is an opening portion formed in a
reverse rotational direction of the rotary shaft, and second
opening portion is an opening portion formed in the rotational
direction of the rotary shaft.
[0070] The rotary shaft of cooling fan 27 is disposed in an offset
manner toward the second opening portion 38 side which is an
opening portion positioned on a rotational direction side of
cooling fan 27 out of the opening portions of damper device 36.
First blow-off air passage 47 which is communicated with first
opening portion 37 is longer than second blow-off air passage 48
which is communicated with second opening portion 38.
[0071] Further, cooling fan 27, damper device 36, guide case 33,
and case 42 are mounted on cooling compartment side wall surface
plate 32, and are unitized with wall surface unit 30. With such a
configuration, by mounting wall surface unit 30 on refrigerator
body 1, constitutional elements such as cooling fan 27 and the like
can be assembled to refrigerator body 1.
[0072] Guide case 33 of cooling fan 27 and case 42 of damper device
36 may be constituted as bodies separated from each other, and the
separated bodies may be assembled to refrigerator body 1 later.
[0073] On a portion of cooling compartment side wall surface plate
32 which opposedly faces damper device 36, first through hole 43
and second through hole 44 are formed corresponding to first
opening portion 37 and second opening portion 38 of damper device
36, respectively (see FIG. 9).
[0074] As shown in FIG. 9, between a surface of cooling compartment
side wall surface plate 32 and a surface of storage compartment
side wall surface plate 31 which opposedly face each other,
air-passage-forming ribs 45, 46, first blow-off air passage 47
which supplies cool air from first through hole 43 to lower storage
compartment 4, and second blow-off air passage 48 which supplies
cool air from second through hole 44 to upper storage compartment 3
are formed. Further, between a surface of cooling compartment side
wall surface plate 32 and a surface of storage compartment side
wall surface plate 31 which opposedly face each other,
return-air-passage-forming ribs 49 are mounted, and return air
passage 50 used for upper storage compartment 3 and lower storage
compartment 4 in common is provided. Return air passage 50 is an
air passage for returning cool air supplied to respective storage
compartments 3, 4 to cooling compartment 25.
[0075] In portions of storage compartment side wall surface plate
31 which opposedly face first blow-off air passage 47 of cooling
compartment side wall surface plate 32, lower blow-off ports 51a
(first blow-off port) are formed, and in portions of storage
compartment side wall surface plate 31 which opposedly faces second
blow-off air passage 48 of cooling compartment side wall surface
plate 32, upper blow-off ports 51b (second blow-off port) are
formed. Further, in a portion of storage compartment side wall
surface plate 31 which opposedly faces lower storage compartment 4,
lower return port 52a is formed, and in a portion of storage
compartment side wall surface plate 31 which opposedly faces upper
storage compartment 3, upper return ports 52b are formed. On a
lower end portion of cooling compartment side wall surface plate
32, a cutout opening, that is, cool air return port 52 for
returning cool air from return air passage 50 to cooling
compartment 25 is formed.
[0076] That is, first blow-off air passage 47 includes first
through hole 43 on one end thereof, and includes lower blow-off
ports 51a at least on the other end. Second blow-off air passage 48
includes second through hole 44 on one end thereof, and includes
upper blow-off ports 51b at least on the other end thereof.
[0077] In the present exemplary embodiment, as shown in FIG. 15,
first blow-off air passage 47 is configured to supply cool air to
lower storage compartment 4 through approximately center portion of
return air passage 50 in the lateral direction. The plurality of
upper return ports 52b are disposed on both left and right sides of
first blow-off air passage 47 in a distributed manner. In other
words, return air passage 50 is divided in the lateral direction by
first blow-off air passage 47. Upper return ports 52b are provided
corresponding to end portions of air passages formed by laterally
dividing return air passage 50.
[0078] As shown in FIG. 15, at a portion where first blow-off air
passage 47 and return air passage 50 are disposed adjacently to
each other, air-passage-forming rib 45 which forms first blow-off
air passage 47, and return-air-passage-forming rib 49 which forms
return air passage 50 are disposed with a gap therebetween. That
is, heat insulation layer 54 which forms an air layer is formed
between air-passage-forming rib 45 which forms first blow-off air
passage 47 and return-air-passage-forming rib 49 which forms return
air passage 50. That is, a portion between air-passage-forming rib
45 which forms first blow-off air passage 47 and
return-air-passage-forming rib 49 which forms return air passage 50
is formed of a multi-layered wall (multi-layered wall structure),
and heat insulation layer 54 is formed between air-passage-forming
rib 45 which forms first blow-off air passage 47 and
return-air-passage-forming rib 49 which forms return air passage
50.
[0079] In the same manner, at a portion where first blow-off air
passage 47 and second blow-off air passage 48 are disposed
adjacently to each other, air-passage-forming rib 45 which forms
first blow-off air passage 47, and air passage-forming rib 46 which
forms second blow-off air passage 48 are disposed with a gap
therebetween. That is, heat insulation layer 54 which forms an air
layer is formed between air-passage-forming rib 45 which forms
first blow-off air passage 47 and air-passage-forming rib 46 which
forms second blow-off air passage 48.
[0080] The present exemplary embodiment exemplifies the
configuration of refrigerator 80 where only a part of the portion
where first blow-off air passage 47 and return air passage 50 are
disposed adjacently to each other has the multi-layered structure.
However, it is preferable that refrigerator 80 be configured to
have the multi-layered wall structure with respect to all regions
where air passages are disposed adjacently to each other.
[0081] The description is made with respect to the configuration
where respective air-passage-forming ribs (air-passage-forming rib
45, air-passage-forming rib 46, and return-air-passage-forming rib
49) which form first blow-off air passage 47, second blow-off air
passage 48, and return air passage 50 are formed on both of cooling
compartment side wall surface plate 32 and storage compartment side
wall surface plate 31. However, the present disclosure is not
limited to such a configuration, and the respective
air-passage-forming ribs may be formed on either one of cooling
compartment side wall surface plate 32 and storage compartment side
wall surface plate 31.
[0082] Next, the manner of operation of refrigerator 80 having the
above-mentioned configuration will be described.
[0083] First, the flow of cool air is described. Cool air is
generated in cooling compartment 25 on which cooler 26 is mounted
due to driving of compressor 29. Cool air generated in cooling
compartment 25 is sucked by cooling fan 27 and is supplied to first
blow-off air passage 47 and second blow-off air passage 48 from
first through hole 43 and second through hole 44 through damper
device 36 respectively (see FIG. 9).
[0084] Cool air supplied to first blow-off air passage 47 and
second blow-off air passage 48 is supplied to upper storage
compartment 3 and lower storage compartment 4 from upper blow-off
ports 51b and lower blow-off port 51a thus cooling wine bottles in
upper storage compartment 3 and lower storage compartment 4.
[0085] After cooling upper storage compartment 3, cool air is
sucked into return air passage 50 from upper return port 52b. After
cooling lower storage compartment 4, cool air is sucked into return
air passage 50 from lower return port 52a. That is, cool air which
is used for cooling upper storage compartment 3 and cool air which
is used for cooling lower storage compartment 4 are sucked into and
are merged with each other in return air passage 50, and are
recovered to cooling compartment 25 through cool air return port
52.
[0086] Amounts of cool air supplied to respective storage
compartments 3, 4 are individually regulated by damper device 36 so
that respective storage compartments 3, 4 are cooled to
predetermined temperatures.
[0087] Further, cooling temperatures of respective storage
compartments 3, 4 can be set by operating operation display portion
23 mounted on the front surface upper portion of door 20 by a touch
operation. A user can also know cooling temperatures of respective
storage compartments 3, 4 based on temperatures displayed on
operation display portion 23.
[0088] Wine bottles stored in respective storage compartments 3, 4
can be visually recognized through center plate 21 of door 20.
Accordingly, a user can quickly take out a desired wine bottle by
opening door 20 without looking for the desired wine bottle.
[0089] Refrigerator 80 according to the present exemplary
embodiment is configured such that cool air generated by one
cooling compartment 25 is supplied to two storage compartments 3, 4
so that respective storage compartments 3, 4 are cooled.
Refrigerator 80 of the present exemplary embodiment is also
configured such that cool airs supplied to respective storage
compartments 3, 4 are controlled by damper device 36. With such a
configuration, storage compartments 3, 4 can be cooled in
temperature zones different from each other. Further, damper device
36 is configured to individually and independently control cool
airs supplied to respective storage compartments 3, 4 by first flap
40 and second flap 41. With such a configuration, respective
storage compartments 3, 4 can be cooled to predetermined
temperatures accurately.
[0090] In refrigerator 80 of the present exemplary embodiment,
cooling fan 27 which supplies cool air to respective storage
compartments 3, 4 is formed of multi-blade fan 27a which supplies
air in the circumferential direction. With such a configuration, it
is unnecessary to provide an air passage directed frontward such as
a propeller fan which blows air frontward. Further, it is also
unnecessary to provide damper device 36 in front of a fan.
Accordingly, a dimension in a front-back direction of cooling
compartment 25 where cooler 26 and cooling fan 27 are disposed can
be reduced and hence, dimensions of storage compartments 3, 4 in
the front-back direction can be increased by an amount
corresponding to the reduction of the dimension of the cooling
compartment 25. Accordingly, storage compartments 3, 4 have large
capacities.
[0091] Particularly, in refrigerator 80 of the present exemplary
embodiment, damper device 36 of cooling fan 27 and first blow-off
air passage 47 and second blow-off air passage 48 are made to
communicate with each other by forming first through hole 43 and
second through hole 44 in cooling compartment side wall surface
plate 32 of wall surface unit 30 which partitions the inside of
refrigerator 80 into storage compartments 3, 4 and cooling
compartment 25. With such a configuration, a dimension of cooling
compartment 25 in the front-back direction can be further reduced.
That is, cool air from cooling fan 27 is directly supplied to first
blow-off air passage 47 and second blow-off air passage 48 through
first through hole 43 and second through hole 44. Accordingly,
compared to the configuration where cooling fan 27 and first
blow-off air passage 47 and second blow-off air passage 48 are
connected to each other by way of duct members or the like, a
distance between cooling fan 27 and first blow-off air passage 47
and second blow-off air passage 48 can be minimized with respect to
their positional relationship in the front-back direction and in
the vertical direction. With such a configuration, storage
capacities of storage compartments 3, 4 can be further
increased.
[0092] With the above-mentioned configuration, it is possible to
acquire the refrigerator which can make air passage configuration
for cool air compact, has a large storage capacity relative to a
dimension of an external profile of refrigerator body 1, and can
achieve a high degree of cooling control.
[0093] In refrigerator 80 of the present exemplary embodiment, one
discharge opening portion 35 is formed on guide case 33 of cooling
fan 27. Discharge opening portion 35 is covered by damper device
36, and first opening portion 37 and second opening portion 38 of
damper device 36 are disposed adjacently to discharge opening
portion 35. With such a configuration, first blow-off air passage
47 and second blow-off air passage 48 which are connected to first
opening portion 37 and second opening portion 38 respectively are
also disposed adjacently to each other and hence, a distance
between first blow-off air passage 47 and second blow-off air
passage 48 can be narrowed. With such a configuration, a lateral
width dimension of refrigerator body 1 can be suppressed within a
predetermined dimension and hence, the refrigerator can be easily
applicable also to an under-counter-type wine cellar where a
lateral width of refrigerator body 1 is restricted.
[0094] In refrigerator 80 according to the present exemplary
embodiment, guide case 33 of cooling fan 27 and case 42 of damper
device 36 are integrally formed with each other. With such a
configuration, it is possible to realize the reduction of the
number of parts. Further, it is possible to prevent leakage and the
like of cool air which may occur in the case where guide case 33 of
cooling fan 27 and case 42 of damper device 36 are provided as
separate parts from each other and guide case 33 and case 42 are
connected to each other. Accordingly, with such a configuration, it
is possible to enhance quality of the refrigerator while
simplifying the configuration of the refrigerator.
[0095] On the other hand, with respect to guide case 33 of cooling
fan 27, the side wall which covers the outer periphery of
multi-blade fan 27a is formed in an Archimedean spiral form using
the rotary shaft of multi-blade fan 27a as the center of the
Archimedean spiral. With such a configuration, an air supply loss
of cool air discharged from multi-blade fan 27a can be minimized
thus realizing efficient cooling.
[0096] Further, the rotary shaft of cooling fan 27 is disposed in
an offset manner toward the opening portion of damper device 36
positioned on a rotational direction side of cooling fan 27, that
is, toward a second opening portion 38 side in the present
exemplary embodiment. With such a configuration, although cool air
from multi-blade fan 27a which is liable to be supplied toward a
side opposite to the fan rotational direction such that an amount
of air to such a side is larger than the amount of air to the other
side, cool air can be substantially uniformly supplied to first
opening portion 37 and second opening portion 38. With such a
configuration, respective storage compartments 3, 4 can be cooled
efficiently.
[0097] In the case where non-uniformity of cool air remains in wall
surface unit 30, as exemplified in the present exemplary
embodiment, a length of first blow-off air passage 47 which
communicates with first opening portion 37 to which a larger amount
of cool air is liable to be supplied is set longer than a length of
second blow-off air passage 48 which communicates with second
opening portion 38. With such a configuration, an air passage
resistance on first opening portion 37 side where a larger amount
of cool air is supplied is increased and hence, an amount of cool
air blown off from first blow-off air passage 47 and an amount of
cool air blown off from second blow-off air passage 48 can be made
more uniform thus efficiently cooling respective storage
compartments 3, 4.
[0098] In addition, in refrigerator 80 of the present exemplary
embodiment, upper return ports 52b for returning cool air from
upper storage compartment 3 to return air passage 50 are disposed
in a distributed manner on left and right sides of first blow-off
air passage 47. With such a configuration, cool air in upper
storage compartment 3 is distributed to both left and right side
portions of upper storage compartment 3. With such a configuration,
upper storage compartment 3 can be cooled uniformly by reducing
non-uniform distribution of cool air.
[0099] In refrigerator 80 of the present exemplary embodiment, the
portion where first blow-off air passage 47 and second blow-off air
passage 48 are disposed adjacently to each other, the portion where
first blow-off air passage 47 and return air passage 50 are
disposed adjacently to each other, and the portion where second
blow-off air passage 48 and return air passage 50 are disposed
adjacently to each other are each formed of the multi-layered wall
having heat insulation layer 54. With such a configuration, heat
transfer between the respective air passages can be minimized thus
realizing efficient cooling.
[0100] Although refrigerator 80 according to one example of the
exemplary embodiment of the present disclosure has been described
with reference to the exemplary embodiment, it is needless to say
that the present disclosure is not limited to the above-mentioned
exemplary embodiment, and can be modified in a various manner
within the scope where the object of the present disclosure can be
achieved.
[0101] For example, as the refrigerator according to one example of
the present exemplary embodiment, the under-counter-type
refrigerator is exemplified where the refrigerator is used in a
state where the refrigerator is built in an integrated kitchen
configuration or the like. However, a refrigerator which is used in
the form that the refrigerator is not built in the integrated
kitchen configuration may be also used. In the present exemplary
embodiment, the refrigerator is exemplified as a refrigerator
suitable for preservation of wines. However, the present invention
may be also applicable to a normal refrigerator for cooling and
preserving foodstuff.
[0102] In the present exemplary embodiment, the description has
been made with respect to the case where the refrigerator has two
storage compartments. However, the refrigerator may have two or
more storage compartments, and temperature zones of two or more
storage compartments may differ from each other.
[0103] As has been described above, it must be construed that the
exemplary embodiment disclosed in this specification is
illustrative and is not limitative in all aspects. That is, the
scope of the present disclosure is defined by the terms of the
claims, rather than the description made above, and is intended to
include all modifications within the meaning and range of
equivalency of the claims.
INDUSTRIAL APPLICABILITY
[0104] As has been described heretofore, the present disclosure
provides a refrigerator which can increase a storage capacity while
suppressing a lateral width dimension of a body of the refrigerator
within a predetermined dimension. Accordingly, the present
disclosure is widely applicable to an under-counter-type
refrigerator which is built in an integrated kitchen configuration
or the like regardless of whether or not the under-counter-type
refrigerator is a refrigerator for household use or a refrigerator
for business use, not to mention the case where under-counter-type
refrigerator is a wine cellar.
REFERENCE MARKS IN THE DRAWINGS
[0105] 1: refrigerator body
[0106] 3: storage compartment (upper storage compartment)
[0107] 4: storage compartment (lower storage compartment)
[0108] 5: shelf
[0109] 7: inner box
[0110] 8, 9: illumination unit
[0111] 9a: recessed portion
[0112] 11: pedestal
[0113] 13: LED
[0114] 14: cover
[0115] 14a: front surface cover portion
[0116] 14b: side surface cover portion
[0117] 15: engaging rib
[0118] 16: holding hole
[0119] 20: door
[0120] 21: center plate
[0121] 22: grip
[0122] 25: cooling compartment
[0123] 26: cooler
[0124] 27: cooling fan
[0125] 27a: multi-blade fan
[0126] 28: machine compartment
[0127] 29: compressor
[0128] 30: wall surface unit
[0129] 31: storage compartment side wall surface plate
[0130] 32: cooling compartment side wall surface plate
[0131] 33: guide case
[0132] 34: suction opening portion
[0133] 35: discharge opening portion
[0134] 36: damper device
[0135] 37: first opening portion
[0136] 38: second opening portion
[0137] 39: damper frame body
[0138] 40: first flap
[0139] 41: second flap
[0140] 42: case
[0141] 43: first through hole
[0142] 44: second through hole
[0143] 45: air-passage-forming rib
[0144] 46: air-passage-forming rib
[0145] 47: first blow-off air passage
[0146] 48: second blow-off air passage
[0147] 49: return-air-passage-forming rib
[0148] 50: return air passage
[0149] 51a: lower blow-off port (first blow-off port)
[0150] 51b: upper blow-off port (second blow-off port)
[0151] 52a: lower return port
[0152] 52b: upper return port
[0153] 52: cool air return port
[0154] 54: heat insulation layer
[0155] 66: outer box
[0156] 80: refrigerator
[0157] 82: illumination substrate
* * * * *