U.S. patent application number 15/974755 was filed with the patent office on 2018-11-22 for fan.
The applicant listed for this patent is Nidec Corporation. Invention is credited to Zhaowu GU, Dongxu ZHANG.
Application Number | 20180335049 15/974755 |
Document ID | / |
Family ID | 64269746 |
Filed Date | 2018-11-22 |
United States Patent
Application |
20180335049 |
Kind Code |
A1 |
GU; Zhaowu ; et al. |
November 22, 2018 |
FAN
Abstract
A fan includes a motor portion having a shaft which rotates by
taking a central axis as a center, an impeller portion configured
at a side of the motor portion along the axial direction and
connected with the shaft, and an upper cover portion configured at
a radial outside of the impeller portion and in which the impeller
portion is accommodated, the upper cover portion including an
outside air guide wall portion located at a radial outside of the
impeller portion, an inside air guide wall portion located at a
radial inside of the outside air guide wall portion and having an
air suction port which penetrates in an axial direction, and a
plurality of connecting portions connected with the outside air
guide wall portion and the inside air guide wall portion,
characterized in that the impeller portion has a side wall portion
which rotates by taking a central axis as a center, an upper wall
portion located at a side of the side wall portion along the axial
direction and extending along a radial direction, a plurality of
wing portions extending along radially outside from the side wall
portion, and a plurality of pressurizing wings configured at a side
of the upper wall portion along the axial direction. With the
structure of the fan, the air suction wind volume of the air
suction port of the fan can be improved, and the exhaust efficiency
can be increased.
Inventors: |
GU; Zhaowu; (Dalian, CN)
; ZHANG; Dongxu; (Dalian, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Nidec Corporation |
Kyoto |
|
JP |
|
|
Family ID: |
64269746 |
Appl. No.: |
15/974755 |
Filed: |
May 9, 2018 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
F04D 29/384 20130101;
F04D 25/0613 20130101; F04D 19/002 20130101; F04D 29/646 20130101;
F04D 29/325 20130101; F04D 29/541 20130101; F04D 25/08 20130101;
F04D 25/06 20130101 |
International
Class: |
F04D 29/54 20060101
F04D029/54; F04D 25/08 20060101 F04D025/08; F04D 19/00 20060101
F04D019/00; F04D 29/32 20060101 F04D029/32 |
Foreign Application Data
Date |
Code |
Application Number |
May 22, 2017 |
CN |
201710364187.7 |
May 22, 2017 |
CN |
201720574613.5 |
Apr 20, 2018 |
CN |
201810359446.1 |
Claims
1. A fan, comprising: a motor portion having a shaft which rotates
by taking a central axis as a center, an impeller portion
configured at a side of the motor portion along an axial direction
and connected with the shaft, and an upper cover portion configured
at a radial outside of the impeller portion and in which the
impeller portion is accommodated, the upper cover portion
comprising an outside air guide wall portion located at a radial
outside of the impeller portion, an inside air guide wall portion
located at a radial inside of the outside air guide wall portion
and having an air suction port which penetrates in the axial
direction, and a plurality of connecting portions connected with
the outside air guide wall portion and the inside air guide wall
portion, characterized in that the impeller portion has a side wall
portion which rotates by taking a central axis as a center, an
upper wall portion located at a side of the side wall portion along
the axial direction and extending along a radial direction, a
plurality of wing portions extending along radially outside from
the side wall portion, and a plurality of pressurizing wings
configured at a side of the upper wall portion along the axial
direction.
2. The fan according to claim 1, characterized in that a plurality
of holes which penetrate in the axial direction are provided on the
upper wall portion.
3. The fan according to claim 1, characterized in that the number
of the pressurizing wings is odd.
4. The fan according to claim 1, characterized in that as observed
in the axial direction, at least a part of each of the pressurizing
wings is accommodated at an inside of the inside air guide wall
portion.
5. The fan according to claim 1, characterized in that as observed
in the axial direction, at least a part of each of the pressurizing
wings and the air suction port are opposed in an axial
direction.
6. The fan according to claim 1, characterized in that an end
portion of the other side of the inside air guide wall portion
along the axial direction and an end portion of a side of the side
wall portion along the axial direction are opposed in a radial
direction.
7. The fan according to claim 6, characterized in that an end
portion of the other side of the inside air guide wall portion
along the axial direction, an end portion of a side of the side
wall portion along the axial direction and at least a part of each
of the wing portions are opposed in a radial direction.
8. The fan according to claim 1, characterized in that the fan
further comprises: a lower cover portion configured at the other
side of the upper cover portion along the axial direction and
connected with an end portion of the other side of the upper cover
portion along the axial direction.
9. The fan according to claim 8, characterized in that the lower
cover portion comprises a lower wall portion extending in a
circumferential direction by taking a central axis as a center, a
tower portion located at a radial inside of the lower wall portion,
and a plurality of static wing portions connected with the lower
wall portion and the tower portion.
10. The fan according to claim 9, characterized in that a side of
the tower portion along the axial direction is provided with a
substrate.
11. The fan according to claim 10, characterized in that the tower
portion and the substrate are fixed by welding.
Description
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] This application claims the benefit of priority to Chinese
Patent Application No. 201710364187.7 filed on May 22, 2017,
Chinese Patent Application No. 201720574613.5 field on May 22, 2017
and Chinese Patent Application No. 201810359446.1 filed on Apr. 20,
2018. The entire contents of these applications are hereby
incorporated herein by reference.
BACKGROUND OF THE INVENTION
1. Field of the Invention
[0002] The present disclosure relates to the fan field, and in
particular to a fan.
2. Description of the Related Art
[0003] A brushed motor is generally adopted to drive an impeller of
a household hair dryer (referred to as a fan); however in order to
pursue a long lifetime, a high speed and a low electric wave, a
brushless motor becomes necessary. As thus, a design with a higher
air flow volume and a higher static pressure are demanded.
[0004] It should be noted that the above introduction to the
technical background is just to facilitate a clear and complete
description of the technical solution of the present disclosure,
and is elaborated to facilitate the understanding of persons
skilled in the art. It cannot be considered that the above
technical solutions are known by persons skilled in the art just
because these solutions are elaborated in the Background of the
present disclosure.
SUMMARY OF THE INVENTION
[0005] In order to solve the above problem mentioned in the
Background, the embodiments of the present disclosure provide a
fan, so as to improve an air flow volume and a static pressure at
an air suction port of the fan and to improve the exhaust
efficiency.
[0006] According to a first aspect of the embodiments of the
present disclosure, a fan is provided, and the fan includes:
[0007] a motor portion having a shaft which rotates by taking a
central axis as a center,
[0008] an impeller portion configured at a side of the motor
portion along an axial direction and connected with the shaft,
[0009] and an upper cover portion configured at a radial outside of
the impeller portion and in which the impeller portion is
accommodated,
[0010] the upper cover portion including an outside air guide wall
portion located at the radial outside of the impeller portion, an
inside air guide wall portion located at a radial inside of the
outside air guide wall portion and having an air suction port which
penetrates in the axial direction, and a plurality of connecting
portions connected with the outside air guide wall portion and the
inside air guide wall portion,
[0011] wherein,
[0012] the impeller portion has a side wall portion which rotates
by taking the central axis as a center, an upper wall portion
located at a side of the side wall portion along the axial
direction and extending along a radial direction, a plurality of
wing portions extending along radially outside from the side wall
portion, and a plurality of pressurizing wings configured at a side
of the upper wall portion along the axial direction.
[0013] An advantageous effect of the present disclosure lies in
that by adding a cover portion (the upper cover portion, including
the air guide wall portion, the air suction port and the connecting
portions) at a top surface (a side of an axial direction) of a
motor of a fan, by providing the cover portion and the pressurizing
wings of the impeller portion, an air flow volume and a static
pressure of the air suction port are improved, whereby the exhaust
efficiency can be improved.
[0014] Referring to the later description and figures, a specific
embodiment mode of the present disclosure is disclosed in detail,
indicating a manner that the principle of the present disclosure
can be adopted. It should be understood that the embodiment mode of
the present disclosure is not limited in terms of the scope. Within
the scope of the appended claims, the embodiment mode of the
present disclosure includes many changes, modifications and
equivalents.
[0015] Features that are described and/or illustrated with respect
to one embodiment mode may be used in the same way or in a similar
way in one or more other embodiment modes and in combination with
or instead of the features of the other embodiment modes.
[0016] It should be emphasized that the term "include/comprise"when
used in this Description specifies the presence of features,
integers, steps or components, but does not preclude the presence
or addition of one or more other features, integers, steps or
components.
[0017] The above and other elements, features, steps,
characteristics and advantages of the present invention will become
more apparent from the following detailed description of the
preferred embodiments with reference to the attached drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0018] An element and a feature described in a figure or an
embodiment mode of the present embodiments of the present
disclosure can be combined with an element and a feature shown in
one or more other figures or embodiment modes. In addition, in the
figures, similar numerals represent corresponding components in
several figures, and can be used to indicate corresponding
components used in more than one embodiment mode.
[0019] The included figures are used to provide a further
understanding on the embodiments of the present disclosure,
constitute a part of the Description, are used to illustrate the
embodiment modes of the present disclosure, and expound together
with the text description the principle of the present disclosure.
Obviously, the figures in the following description are only some
embodiments of the present disclosure. Persons skilled in the art
can also obtain other figures based on these figures under the
premise that they do not pay inventive labor. In the figures:
[0020] FIG. 1 is an exploded schematic diagram of a fan of the
Embodiment 1.
[0021] FIG. 2 is another exploded schematic diagram of the fan of
the Embodiment 1.
[0022] FIG. 3 is a sectional diagram of the fan of the Embodiment
1.
[0023] FIG. 4 is a schematic diagram of an upper cover portion of
the fan of the Embodiment 1.
[0024] FIG. 5 is a schematic diagram of an impeller portion of the
fan of the Embodiment 1.
[0025] FIG. 6 is a schematic diagram of a lower cover portion of
the fan of the Embodiment 1.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0026] Referring to the drawings, through the following
Description, the above and other features of the embodiments of the
present disclosure will become apparent. The following description
and drawings specifically disclose the specific embodiment mode of
the embodiments of the present disclosure, showing a partial
embodiment mode which can adopt the principle of the embodiments of
the present disclosure. It should be understood that the
embodiments of the present disclosure are not limited to the
described embodiment modes, on the contrary, the embodiments of the
present disclosure include all the modifications, variations, and
equivalents falling within the scope of the appended claims.
[0027] In the embodiments of the present disclosure, the term
"first" and "second", etc. are used to distinguish different
elements in terms of appellation, but do not represent a spatial
arrangement or time sequence, etc. of these elements, and these
elements should not be limited by these terms. The term "and/or"
includes any and all combinations of one or more of the associated
listed terms. The terms "include", "comprise" and "have", etc.
specify the presence of stated features, elements, members or
components, but do not preclude the presence or addition of one or
more other features, elements, members or components.
[0028] In the embodiments of the present disclosure, the singular
forms "a/an" and "the", etc. include plural forms, and should be
understood broadly as "a kind of" or "a type of", but not be
defined as the meaning of "one"; in addition, the term "the" should
be understood to include both the singular forms and the plural
forms, unless the context clearly indicates otherwise. In addition,
the term "according to" should be understood as "at least partially
according to . . . ", the term "based on" should be understood as
"at least partially based on . . . ", unless the context clearly
indicates otherwise.
[0029] In the embodiments of the present disclosure, for ease of
description, a direction parallel to a direction extending along a
shaft is referred to as "an axial direction", a radius direction
taking the shaft as a center is referred to as "a radial
direction", and a circumferential direction taking the shaft as a
center is referred to as "a circumferential direction"; however
these are just for ease of description and do not limit
orientations when a fan is used and manufactured.
[0030] The various implementations of the embodiments of the
present disclosure will be described below with reference to the
drawings. These implementations are only exemplary and do not limit
on the embodiments of the present disclosure.
[0031] The present embodiment provides a fan. FIG. 1 is an exploded
schematic diagram of the fan, FIG. 2 is another exploded schematic
diagram of the fan, and FIG. 3 is a sectional diagram of the
fan.
[0032] As shown in FIG. 1 to FIG. 3, the fan includes a motor
portion 100, an impeller portion 200 and an upper cover portion
300; the motor portion 100 has a shaft 101 which rotates by taking
a central axis O as a center, the impeller portion 200 is
configured at a side of the motor portion 100 along an axial
direction and is connected with the shaft 101, and the upper cover
portion 300 is configured at a radial outside of the impeller
portion 200 and in which the impeller portion 200 is
accommodated.
[0033] In the present embodiment, the upper side shown in FIG. 3 is
referred to as "a side along an axial direction", the lower side
shown in FIG. 3 is referred to as "the other side along an axial
direction", such definitions are just for ease of description and
do not constitute limitations on the present application.
[0034] FIG. 4 is a schematic diagram of the upper cover portion 300
of the fan, as shown in FIGS. 1-4, in the present embodiment, the
upper cover portion 300 includes an outside air guide wall portion
301, an inside air guide wall portion 302 and a plurality of
connecting portions 303. The outside air guide wall portion 301 may
be of a cylindrical shape and is located at a radial outside of the
impeller portion 200. The inside air guide wall portion 302 may
also be of a cylindrical shape, is located at a radial inside of
the outside air guide wall portion 301, and has an air suction port
304 which penetrates in the axial direction. The plurality of
connecting portions 303 are connected with the outside air guide
wall portion 301 and the inside air guide wall portion 302.
[0035] In the present embodiment, the cylindrical shape may be
cylindrical shapes having the same diameter, but are not limited
thereto, and may also be cylindrical shapes having a gradually
changing diameter or different diameters. As shown in FIG. 4, the
inside air guide wall portion 302 is of a shape of an upside-down
bowl, a portion thereof (the bottom of the bowl) has the same
diameter and is of a cylindrical shape, while the diameter of the
other portion (the bowl body part) gradually becomes larger from a
side to the other side along the axial direction.
[0036] FIG. 5 is a schematic diagram of the impeller portion 200 of
the fan, as shown in FIGS. 1-3 and 5, in the present embodiment,
the impeller portion 200 includes a side wall portion 201, an upper
wall portion 202, a plurality of wing portions 203 and a plurality
of pressurizing wings 204. The side wall portion 201 may be of a
cylindrical shape and also rotates by taking the central axis O as
a center. The upper wall portion 202 is located at a side of the
side wall portion 201 along the axial direction and extends along a
radial direction. The plurality of wing portions 203 extend along
radially outside from the side wall portion 201. The plurality of
pressurizing wings 204 are configured at a side of the upper wall
portion 202 along the axial direction.
[0037] Via this structure, air entering from the air suction port
304 not only has an axial flow channel (the straight arrow as shown
in FIG. 3), but also forms a vortex channel (the dashed arrow as
shown in FIG. 3), by combining with the axial flow channel formed
by air entering from the upper cover portion 300 (the straight
arrow as shown in FIG. 3), a design of using a mixing technique of
an axial flow and a vortex to improve an air flow volume and a
static pressure of a fan is achieved. Whereby, through the settings
of the upper cover portion 300 and the pressurizing wings 204, the
air flow volume and the static pressure of the air suction port are
improved and the exhaust efficiency is improved.
[0038] In the present embodiment, no limitation on the structure of
the motor portion 100 is made, the related art can be referenced
for details.
[0039] The upper cover portion 300 of the fan of the present
embodiment will be described below with reference to FIGS. 1-4.
[0040] In the present embodiment, no limitation on the structure of
the inside air guide wall portion 302 of the upper cover portion
300 is made, and it may be a structure in a cylindrical shape and
may also be a structure in a shape of an upside-down bowl, as shown
in FIG. 4.
[0041] In the present embodiment, as shown in FIG. 3, an end
portion of the other side (the lower side as shown in FIG. 3) of
the inside air guide wall portion 302 of the upper cover portion
300 along the axial direction and an end portion of a side (the
upper side as shown in FIG. 3) of the side wall portion 201 of the
impeller portion 200 along the axial direction are opposed in a
radial direction. Whereby, as shown in FIG. 3, a gap (the gap "B"
as shown in FIG. 3) is formed between the inside air guide wall
portion 302 and the side wall portion 201 (in a radial direction),
such that the air entering from the air suction port 304 is guided
to the other side along the axial direction, that is, flows
downwards as shown in FIG. 3, to avoid generation of an airflow in
a horizontal direction as shown in FIG. 3 to affect air flow volume
noise.
[0042] In the present embodiment, as shown in FIG. 3, an end
portion of the other side (the lower side as shown in FIG. 3) of
the inside air guide wall portion 302 of the upper cover portion
300 along the axial direction, an end portion of a side (the upper
side as shown in FIG. 3) of the side wall portion 201 of the
impeller portion 200 along the axial direction and at least a part
of each of the wing portions 203 of the impeller portion 200 are
opposed in a radial direction. Whereby, as shown in FIG. 3, a gap
(the gap "A" as shown in FIG. 3) is formed between the wing
portions 203 and the inside air guide wall portion 302 (in a radial
direction), meanwhile a gap (the gap "B" as shown in FIG. 3) is
also formed between the inside air guide wall portion 302 and the
side wall portion 201 (in a radial direction), such that
interference between the wing portions 203 and the inside air guide
wall portion 302 can be prevented.
[0043] In the present embodiment, no limitation on the structure of
the connecting portions 303 is made, they may be set to be a
hollowed-out structure as shown in FIGS. 1-2 and 4, may also be set
to be other structures, as long as the inside air guide wall
portion 302 and the outside air guide wall portion 301 may be
connected via the connecting portions 303. Moreover, in the present
embodiment, no limitation on the number of the connecting portions
303 is made, they may be set to be three as shown in FIGS. 1-2 and
4, may also be set to be in other quantity.
[0044] The impeller portion 200 of the fan of the present
embodiment will be described below with reference to FIGS. 3 and
5.
[0045] In the present embodiment, as shown in FIG. 5, a plurality
of holes 205 which penetrate in an axial direction may also be
provided on the upper wall portion 202 of the impeller portion 200.
Whereby, the heat dissipation effect can be improved. That is to
say, a part of air entering from the air suction port 304 is sent
to the motor portion 100 via the plurality of holes 205, thereby
enabling to cool the motor portion 100.
[0046] In the present embodiment, no limitation on the number of
the wing portions 203 of the impeller 200 is made, they may be set
to be seven as shown in FIG. 5, may also be set to be in other
quantity.
[0047] In the present embodiment, no limitation on the number of
the pressurizing wings 204 is made, they may be set to be odd, for
example five as shown in FIG. 5, may also be set to be in other
quantity. Whereby, the heat dissipation effect can be improved.
[0048] In the present embodiment, as observed in an axial
direction, at least a part of each of the pressurizing wings 204 is
accommodated at an inner side of the inside air guide wall portion
302. That is to say, as shown in FIG. 3, a part of the pressurized
wings 204 can be seen from the air suction port 304. Whereby, the
air entering from the air suction port 304 may form a vortex
channel through being guided by the pressurizing wings 204, thus to
increase an air suction volume. In addition, since the plurality of
pressurizing wings 204 are accommodated inside the inside air guide
wall portion 302, thus an axial length of a fan can be shortened,
thereby enabling to realize miniaturization of the fan.
[0049] In the present embodiment, as observed in an axial
direction, at least a part of each of the pressurizing wings 204
and the air suction port 304 are opposed in an axial direction. As
shown in FIG. 3, the air suction port 304 and a part of the
pressurizing wings 204 which can be seen from the air suction port
304 are opposed in an axial direction (i.e. the up and down
direction as shown in FIG. 3). Whereby, the air entering from the
air suction port 304 may be ensured to be guided by the
pressurizing wings 204, thus to form the vortex channel.
[0050] In one implementation, the pressurizing wings 204 are
configured to incline in a circumferential direction by taking the
central axis O as a center. For example, the pressurizing wings 204
may be configured to curve from a radial inner side to a radial
outer side. In this way, by configuring the pressurizing wings 204
to curve, introduction of the air coming from the air suction port
304 can be promoted. Moreover, the pressurizing wings 204 are not
limited to be configured to be curved surfaces, and can be also
configured to incline with respect to the central axis O.
[0051] In one implementation, the number of the pressurizing wings
204 and the number of the wing portions 203 may be different. In
the present implementation, the number of the pressurizing wings
204 is five, and the number of the wing portions 203 is seven. By
making the number of the pressurizing wings 204 and the number of
the wing portions 203 be different, interference between the
pressurizing wings 204 and the wing portions 203 during rotating
can be restrained, thereby to reduce noise.
[0052] In one implementation, the number of the pressurizing wings
204, the number of the wing portions 203 and the number of the
connecting portions 303 may be different. In the present
implementation, the number of the pressurizing wings 204 is five,
the number of the wing portions 203 is seven, and the number of the
connecting portions 303 is three. By making the number of the
pressurizing wings 204, the number of the wing portions 203 and the
number of the connecting portions 303 be different, interference
among the pressurizing wings 204, the wing portions 203 and the
connecting portions 303 during rotating can be restrained, thereby
to reduce noise.
[0053] In the present embodiment, as shown in FIGS. 1-3, the fan
may further include a lower cover portion 400 which may be
configured at the other side (the lower side as shown in FIG. 3) of
the upper cover portion 300 along the axial direction and is
connected with an end portion of the other side of the upper cover
portion 300 along the axial direction. The present embodiment does
not make limitations on a connecting manner of the upper cover
portion 300 and the lower cover portion 400. Whereby, through a
combination of the upper cover portion 300 and the lower cover
portion 400, the internal structure of the fan may be covered, to
avoid a damage to a component caused by the internal construction
of the fan being in directly contact with the outside.
[0054] FIG. 6 is a schematic diagram of the lower cover portion 400
of the fan, as shown in FIG. 6, in the present embodiment, the
lower cover portion 400 may include a lower wall portion 401, a
tower portion 402 and a plurality of static wing portions 403. The
lower wall portion 401 may be of a cylindrical shape, such as a
cylindrical shape having a gradually changing diameter, and extends
in a circumferential direction by taking a central axis O as a
center. The tower portion 402 is located at a radial inside of the
lower wall portion 401. The plurality of static wing portions 403
are connected with the lower wall portion 401 and the tower portion
402. Whereby, a structure similar to a base is formed to support
the motor portion 100 and the impeller portion 200.
[0055] In the present embodiment, similar to the connecting
portions 303 of the upper cover portion 300, no limitations on the
number and structure of the plurality of static wing portions 403
are made, they may be formed through various enforceable manners,
the present embodiment only illustrates one structure and the
number therein through FIG. 6.
[0056] In the present embodiment, a side (the upper side as shown
in FIG. 3) of the tower portion 402 along the axial direction is
provided with a substrate, and the substrate may be served as a
substrate of the motor portion 100, may also be served as a carrier
of a control circuit, is electrically connected with the motor
portion 100 and drives the motor portion 100 to work. In the
present embodiment, the tower portion 402 and the substrate may be
fixed by welding, but the present embodiment is not limited
thereto.
[0057] With the structure of the fan of the present embodiment, the
air flow volume and the static pressure of the air suction port of
the fan are improved and the exhaust efficiency is improved.
[0058] The present embodiment provides a blower having the fan
according to Embodiment 1. In addition, the blower also has
conventional components of other blowers, such as a power supply
interface and a power supply line, etc. The present embodiment does
not make limitations on structures, setting manners and functions
of these conventional components, the related art can be
referenced.
[0059] With the structure of the fan of the blower of the present
embodiment, the air volume and the static pressure of the air
suction port of the fan are improved and the exhaust efficiency is
improved.
[0060] The present disclosure has been described herein above with
reference to the specific embodiment modes, however persons skilled
in the art should clearly know that the description is exemplary
and does not limit the protection scope of the present disclosure.
Persons skilled in the art can make various variations and
modifications to the present disclosure based on the principle of
the present disclosure, these variations and modifications are also
within the scope of the present disclosure.
* * * * *