U.S. patent application number 09/812888 was filed with the patent office on 2002-02-28 for range hood.
Invention is credited to Morimoto, Nobuyuki, Okamoto, Toshinobu.
Application Number | 20020023637 09/812888 |
Document ID | / |
Family ID | 18625858 |
Filed Date | 2002-02-28 |
United States Patent
Application |
20020023637 |
Kind Code |
A1 |
Okamoto, Toshinobu ; et
al. |
February 28, 2002 |
Range hood
Abstract
A range hood having an excellent collecting efficiency of greasy
smoke generated from a cooking range is provided. The range hood
comprises side plates disposed below the body, each of which has an
inclined surface formed thereon, and a deflecting plate having a
horizontal portion shaped in parallel with the bottom face of the
body and an inclined portion shaped in parallel with the inclined
surface of the body. The deflecting plate is narrower than the body
and arranged so as to form an inlet port at the front and both
sides thereof and to form a suction passage between the top face
thereof and the body. The inclined portion of the deflecting plate
is disposed between the body and the inclined surface of the side
plate. Since the inlet speed of greasy smoke at the inlet port on
the front side is larger than that on the rear side, greasy smoke
ascending along the deflecting plate is effectively collected.
Inventors: |
Okamoto, Toshinobu; (Aichi,
JP) ; Morimoto, Nobuyuki; (Aichi, JP) |
Correspondence
Address: |
MCDERMOTT, WILL & EMERY
600 13th Street, N.W.
Washington
DC
20005-3096
US
|
Family ID: |
18625858 |
Appl. No.: |
09/812888 |
Filed: |
March 21, 2001 |
Current U.S.
Class: |
126/299D ;
126/299R |
Current CPC
Class: |
F24C 15/20 20130101 |
Class at
Publication: |
126/299.00D ;
126/299.00R |
International
Class: |
F24C 015/20 |
Foreign Application Data
Date |
Code |
Application Number |
Apr 14, 2000 |
JP |
2000-113979 |
Claims
What is claimed is:
1. Arange hood comprising: a body substantially in a box shape
having a suction opening on a bottom face thereof and a exhaust
opening on a top face thereof; a fan motor for drawing gas into
said body through the suction opening and for exhausting the gas
through the exhaust opening; two side plates disposed below said
body on both left and right sides each thereof, each of said side
plates having a rearward-descending inclined surface; and a
deflecting plate having a horizontal portion shaped parallel with
the bottom face of said body and an inclined portion shaped
parallel with the inclined surface of said side plate and arranged
for forming an inlet port on a front and both sides thereof and a
suction passage between a top face thereof and said body.
2. The range hood according to claim 1, wherein said deflecting
plate is disposed such that the inclined portion thereof is located
between said body and the inclined surface of each of said side
plates.
3. The range hood according to claim 1, wherein said deflecting
plate is disposed such that the inclined portion of said deflecting
plate is located substantially in agreement with the inclined
surface of each of said side plates.
4. The range hood according to claim 1, wherein said deflecting
plate is disposed such that the inclined portion of said deflecting
plate is located further away from said body than the inclined
surface of each of said side plates.
5. The range hood according to claim 1 further comprising a guide
plate disposed between said side plates, said guide plate having
substantially the same inclination as that of the inclined surface
of each of said side plates.
6. The range hood according to claim 1, wherein a rear portion of a
panel of the bottom face of said body is bent in substantially the
same inclination as that of the inclined surface of each of said
side plates.
7. The range hood according to any of claims 1 through 6 further
comprising an oil pan disposed at a bottom end of the inclined
portion of said deflecting plate.
8. A range hood according to claim 1, wherein said deflecting plate
is narrower than a distance between said side plates and disposed
below the bottom face of said body.
9. The range hood according to claim 8, wherein said deflecting
plate is disposed such that the inclined portion of said deflecting
plate is located between said body and the inclined surface of each
of said side plates.
10. The range hood according to cl aim 8, wherein said deflecting
plate is disposed such that the inclined portion of said deflecting
plate is located substantially in agreement with the inclined
surface of each of said side plates.
11. The range hood according to claim 8, wherein said deflecting
plate is disposed such that the inclined portion of said deflecting
plate is located further away from said body than the inclined
surface of each of said side plate.
12. The range hood according to claim 8 further comprising a guide
plate disposed between said side plates, said guide plate having
substantially the same inclination as that of the inclined surface
of each of said side plates.
13. The range hood according to claim 8, wherein a rear portion of
a panel of the bottom face of said body is bent in substantially
the same inclination as that of the inclined surface of each of
said side plates.
14. The range hood according to any of claims 8 through 13 further
comprising an oil pan disposed at a bottom end of the inclined
portion of said deflecting plate.
Description
FIELD OF THE INVENTION
[0001] The present invention relates to a range hood for exhausting
rising greasy smoke generated from a cooking range into the open
air.
BACKGROUND OF THE INVENTION
[0002] Recently, range hoods exhibiting high collecting efficiency
in exhausting greasy smoke produced from cooking into the outdoors
has been demanded increasingly.
[0003] An example of conventional range hoods such as shown in FIG.
12 and FIG. 13 is known. As illustrated, a conventional household
range hood comprises fan 101 installed within hood body 103,
passage forming member 102 having downwardly-widening side faces
and arranged under fan 101, and suction passage 104 formed around
passage forming member 102. Passage forming member 102 is formed in
a hollow-body shape having downwardly-widening side faces, provided
with an upwardly-protruding upper wall and a horizontal or
downwardly-projecting bottom wall. The bottom end of passage
forming member 102 is disposed above the bottom end of hood body
103.
[0004] Since, in such a conventional range hood, the bottom end of
passage forming member 102 is located above the bottom end of the
hood body 103 and set back from the front, the suction speed around
the periphery of hood body 103 from outside to inside is small.
Accordingly, greasy smoke generated from a cooking range, which is
not shown, spreads out according as rising up. And thus, it is not
sucked into hood body 103 but is released indoors. That is, the
conventional range hood has a poor collecting efficiency.
SUMMARY OF THE INVENTION
[0005] A range hood capable of effectively collecting greasy smoke
generated from a cooking range is provided.
[0006] The range hood comprises:
[0007] (a) a box-shaped body having a suction opening in its bottom
face and a exhaust opening in its top face;
[0008] (b) a fan motor disposed within the body for suck the greasy
smoke through the suction opening and for exhausting the smoke
through the exhaust opening;
[0009] (c) side plates provided below the body on both left and
right sides each thereof having a rearward-descending inclined
surface; and
[0010] (d) a deflecting plate having a horizontal portion shaped in
parallel with the bottom face of the body and an inclined portion
shaped in parallel with the inclined surface of the side plate and
arranged so as to form an inlet port on the front and both sides
thereof and a suction passage between the top face thereof and the
body. The inclined portion of the deflecting plate is disposed
between the body and the inclined surface of the deflecting
plate.
[0011] Greasy smoke generated from the range collides with the
bottom face of the deflecting plate and is drawn in through the
inlet port on both sides. Greasy smoke moving along the deflecting
plate is also drawn in through the inlet port at the front where
the inlet speed is higher. Greasy smoke is then passed through the
suction passage and sucked in at the suction opening to be
exhausted. That is, the range hood has a high efficiency in
collecting greasy smoke.
BRIEF DESCRIPTION OF THE DRAWINGS
[0012] FIG. 1 is a sectional view of a range hood according to
exemplary embodiment 1 of the invention.
[0013] FIG. 2 is a front view of the range hood according to
embodiment 1.
[0014] FIG. 3 is a side view showing a state of the range hood set
up above a cooking range.
[0015] FIG. 4 is a sectional view of a range hood according to
exemplary embodiment 2 of the invention.
[0016] FIG. 5 is a front view of the range hood according to
embodiment 2.
[0017] FIG. 6 is a sectional view of a range hood according to
exemplary embodiment 3 of the invention.
[0018] FIG. 7 is a front view of the range hood according to
embodiment 3.
[0019] FIG. 8 is a sectional view of a range hood according to
exemplary embodiment 4 of the invention.
[0020] FIG. 9 is a perspective view of the range hood according to
embodiment 4 with a deflecting plate removed therefrom.
[0021] FIG. 10 is a sectional view of a range hood according to
exemplary embodiment 5 of the invention.
[0022] FIG. 11 is a perspective view of the range hood according to
embodiment 5 with a deflecting plate removed therefrom.
[0023] FIG. 12 is a front view of a conventional range hood.
[0024] FIG. 13 is a sectional view of the conventional range
hood.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0025] (Exemplary Embodiment 1)
[0026] FIG. 1 is a sectional view of a range hood according to
exemplary embodiment 1 of the present invention. FIG. 2 is a front
view of the range hood. FIG. 3 is a side view showing a state of
the range hood installed above a cooking range.
[0027] Box-shaped body 5 has suction opening 1 in the bottom face
and exhaust opening 4 in the top face provided with exhaust adapter
3 to be connected with duct 2 communicating with the outdoors.
Within body 5, fan motor 6 is provided for sucking gas, e.g. greasy
smoke, and for exhausting it from exhaust opening 4. On both left
and right sides below body 5, side plates 8 are provided. Side
plate 8 has inclined surface 7 descending rearward. Deflecting
plate 13 has horizontal portion 9 shaped in parallel with the
bottom face of body 5 and inclined portion 10 shaped in parallel
with inclined surface 7 of side plate 8. Deflecting plate 13 is
narrower than body 5. And therefore, plate 13 forms inlet port 11
at its front and both sides and suction passage 12 between its top
face and body 5. Further, deflecting plate 13 has oil pan 14
provided at its lower end. Inclined portion 10 of deflecting plate
13 is disposed between body 5 and inclined surface 7 of side plate
8. The range hood is set up above range 15.
[0028] When the range hood is operated during the use of range 15,
fan motor 6 is driven, so that greasy smoke generated from range 15
ascends. Greasy smoke may collide with deflecting plate 13 or be
directly sucked in from inlet port 11 provided at the sides of
deflecting plate 13. While ascending along inclined portion 10 of
deflecting plate 13, greasy smoke collided with deflecting plate 13
moves toward the side of horizontal portion 9. The distance between
deflecting plate 13 and body 5 on the front side is narrower than
that on the rear side. Therefore, the inlet speed of greasy smoke
on the front side of deflecting plate 13 is larger than that on the
rear side. Accordingly, greasy smoke collided with deflecting plate
13 is sucked in through inlet port 11 on the front side of
deflecting plate 13. Greasy smoke passed through suction passage 12
is sucked into body 5 through suction opening 1 made in the body
and then exhausted into the outdoors from exhaust opening 4 through
duct 2. A portion of greasy smoke collected by the range hood
attaches onto the bottom face of body 5 or the top face of
deflecting plate 13 and moves along inclined portion 10 of
deflecting plate 13 to be recovered in oil pan 14.
[0029] The range hood according to exemplary embodiment 1, as
described above, allows greasy smoke ascending to the front of
deflecting plate 13 to be drawn therein, while allowing greasy
smoke ascending to the rear of the deflecting plate 13 to be guided
toward the front side by means of inclined portion 10 and
effectively drawn in there, and allows them to be exhausted.
[0030] Further, in the range hood, greasy smoke attached to
deflecting plate 13 can be recovered smoothly and cleaned up
easily.
[0031] (Exemplary Embodiment 2)
[0032] FIG. 4 is a sectional view of a range hood according to
exemplary embodiment 2 of the invention. FIG. 5 is a front view of
the range hood according to embodiment 2. Inclined portion 1OA of
deflecting plate 13A is placed virtually in agreement with the
position of inclined surface 7 of side plate 8 on body 5. Its other
configuration is the same as exemplary embodiment 1, and
explanation thereof will be hence omitted.
[0033] Suction passage 12A on the side of inclined portion 1OA is
made narrower because inclined portion 1OA of deflecting plate 13A
is placed closer to the bottom face side of body 5 than that in
embodiment 1. Accordingly, when fan motor 6 is driven, inlet port
11 sucks greasy smoke at greater speed than that in embodiment 1.
However, suction flow of greasy smoke on the rear side is also
large. Thus, this range hood draws and exhausts the greasy smoke
smoothly through the overall inlet port 11 formed at sides and in
front of deflecting plate 13A.
[0034] (Exemplary Embodiment 3)
[0035] FIG. 6 is a sectional view of a range hood according to
exemplary embodiment 3 of the invention. FIG. 7 is a front view of
the range hood according to embodiment 3. Inclined portion 10 of
deflecting plate 13B is positioned farther away from body 5 than
inclined surface 7 of side plate 8 on body 5. Its other
configuration is the same as that in embodiment 1, and explanation
thereof will be hence omitted.
[0036] Inclined portion 10B of deflecting plate 13B projects below
inclined surface 7 of side plates 8 so that inlet port 11A opens
obliquely outward. Therefore, when fan motor 6 is driven, inlet
port 11A sucks air in wide area at both sides of inclined portion
10B, and the vector of the inlet flow directs from outside to
inside. Greasy smoke flowing toward the outside of body 5 is sucked
through inlet port 11A and then exhausted.
[0037] (Exemplary embodiment 4)
[0038] FIG. 8 is a sectional view of a range hood according to
exemplary embodiment 4 of the invention. FIG. 9 is a perspective
view of the range hood according to embodiment 4 with the
deflecting plate removed therefrom. The range hood has guide plate
16 which is disposed between side plates 8A and have substantially
the same inclination as that of inclined surface 7A formed at the
bottom of side plates 8A, for guiding greasy smoke to suction
opening 1. Its other configuration is the same as exemplary
embodiment 1, and explanation thereof will be hence omitted.
[0039] Guide plate 16 forms suction passage 12C between body 5 and
deflecting plate 13 substantially at a uniform height. When fan
motor 6 is driven, greasy smoke is drawn in at substantially equal
inlet speeds on the front side and the rear side and thus sucked in
a balanced manner to be exhausted.
[0040] (Exemplary embodiment 5)
[0041] FIG. 10 is a sectional view of a range hood according to
exemplary embodiment 5 of the invention. FIG. 11 is a perspective
view of the range hood according to embodiment 5 with the
deflecting plate removed therefrom. Aportion of bottom panel 17 on
its rear side of body 5A is bent to form guide 16A and oil pan 18
therein. Guide 16A is formed to have substantially the same
inclination as that of inclined surface 7A of side plates 8B for
guiding greasy smoke to suction opening 1. Its other configuration
is the same as embodiment 3, and description will be hence
omitted.
[0042] Guide plate 16A forms suction passage 12C between body 5A
and deflecting plate 13C substantially at a uniform height. When
fan motor 6 is driven, greasy smoke is drawn in at substantially
equal inlet speeds on the front side and the rear side and thus
sucked in a balanced manner to be exhausted.
[0043] Since guide plate 16A is formed with utilizing bottom panel
17 of body 5A, another guide plate is not required. Further, guide
plate 16A guides greasy smoke attaching to the bottom face of body
5A toward a preset position smoothly so as to recover the guided
smoke.
* * * * *