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Publication numberUS20020083943 A1
Publication typeApplication
Application numberUS 09/749,517
Publication dateJul 4, 2002
Filing dateDec 28, 2000
Priority dateDec 28, 2000
Also published asDE20100278U1
Publication number09749517, 749517, US 2002/0083943 A1, US 2002/083943 A1, US 20020083943 A1, US 20020083943A1, US 2002083943 A1, US 2002083943A1, US-A1-20020083943, US-A1-2002083943, US2002/0083943A1, US2002/083943A1, US20020083943 A1, US20020083943A1, US2002083943 A1, US2002083943A1
InventorsLi-Lin Chang
Original AssigneeLi-Lin Chang
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Smoke Exhaust
US 20020083943 A1
Abstract
A smoke exhaust having a housing formed with a wind chamber for creating pressure and a guiding chamber for guiding the smoke. The guiding chamber has a sucking mouth formed on front section of the housing. An upright filter mesh assembly is disposed at the sucking mouth for filtering the smoke and collecting oil dirt. The guiding chamber has a rear face formed with a bottom edge. A guiding face forward and upward extends from the bottom edge to the sucking mouth for guiding smoke to the sucking mouth.
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Claims(6)
What is claimed is:
1. A smoke exhaust comprising a housing formed with two internal spaces, one of the spaces being a wind chamber for creating pressure, while the other being a guiding chamber for guiding the smoke, the wind chamber having an outlet communicating with outer side of the housing and an inlet communicating with the guiding chamber, the guiding chamber surrounding the wind chamber and having a compartment defined between the inlet of the wind chamber and the guiding chamber for air to smoothly flow therethrough, the guiding chamber further having a sucking mouth formed on one side of the housing proximal to an oven, an upright filter mesh assembly being disposed at the sucking mouth, the guiding chamber having a rear face formed with a bottom edge, a guiding face forward and upward extending from the bottom edge to the sucking mouth for guiding smoke.
2. A smoke exhaust as claimed in claim 1, wherein the guiding chamber further has two downward extending side walls, the side walls and the guiding face defining therebetween a smoke collecting space.
3. A smoke exhaust as claimed in claim 1, wherein the filter mesh assembly includes a frame body in which a filter mesh is disposed, a bottom of the frame body being formed with a sink having an opening, an oil cup being placed into or taken out from the sink through the opening, the frame body having at least one window between the sink and the filter mesh, whereby the oil dirt accumulating on the filter mesh can flow through the window into the oil cup.
4. A smoke exhaust as claimed in claim 1, wherein the sucking mouth has a top face and a bottom face respectively formed with an upper and a lower locating dents, the frame body of the filter mesh assembly being located between the upper and lower locating dents.
5. A smoke exhaust as claimed in claim 1, wherein at least one upper leaf spring is disposed in the upper locating dent for resiliently downward pressing and locating the filter mesh assembly in the upper and lower locating dents.
6. A smoke exhaust as claimed in claim 1, wherein the sucking mouth has a left and a right side walls on which two lateral leaf springs are respectively disposed, the sucking mouth further having an opening facing downward, whereby the filter mesh assembly can be upward mounted at the sucking mouth through the opening, the frame body of the filter mesh assembly being formed with a dent corresponding to each of the lateral leaf springs for locating the lateral leaf springs.
Description
BACKGROUND OF THE INVENTION

[0001] The present invention is related to a smoke exhaust which is able to filter the smoke and collect oil dirt and which can be easily cleaned up.

[0002]FIG. 9 shows a conventional smoke exhaust installed in a kitchen. In general, the kitchen cabinet has a depth of about 60 cm. The oven rack 90 of the gas oven mounted on the kitchen cabinet is positioned on front section of the kitchen cabinet, that is, near outer side thereof. The upper cabinet above the gas oven has a depth of about 3038 cm. In order to adapt the smoke exhaust 9 to the profile of the cabinet, the wind pipe 91 of the smoke exhaust 9 is disposed on rear section of the smoke exhaust, that is, on the plane under the cabinet. An oil collecting sink 93 is formed behind the wind pipe 91 in which the oil dirt accumulating in the wind pipe 91 is collected. According to the above arrangement, the sucking mouth 92 of the smoke exhaust 9 is disaligned from the gas oven by a certain distance. As a result, the smoke sucking effect is poor.

[0003] In order to enhance the smoke sucking effect, the power of the fan motor is increased to enhance the smoke sucking effect. However, this leads to great noise produced during operation of the motor. Furthermore, the motor with high power is manufactured at high cost and will consume more electricity.

[0004]FIG. 10 shows another type of smoke exhaust 8. A conic protective mesh 83 is added to the sucking mouth 82 of the smoke exhaust for preventing alien articles from entering the sucking mouth 82. An oil collecting cup 84 is disposed at the bottom of the protective mesh 83. When the oil dirt inside the smoke exhaust 8 accumulates to a certain extent, the oil dirt will drop down. A part of the dropping oil dirt will be stopped by the protective mesh 83 to flow along the protective mesh 83 into the oil collecting cup 84, while the other part of the oil dirt will pass through the protective mesh 83 and directly drop down. Moreover, when the oil dirt is guided by the protective mesh 83 to flow into the oil collecting cup 84, the oil dirt will also accumulate in the meshes of the protective mesh 83. When cooking foods, the hot air will continuously flow through the protective mesh 83 and heat the oil dirt accumulating thereon. Therefore, the oil dirt will be more flowable. The protective mesh 83 is conic so that the oil dirt may directly drop down onto the kitchen cabinet or the foods rather than flow down along the protective mesh 83. This results in contamination of the environment of the kitchen or the foods.

[0005] Furthermore, the oil collecting sink 93 and protective mesh 83 of the conventional smoke exhausts 8, 9 form many dead corners on the bottom face of the smoke exhausts 8, 9, which can be hardly cleaned up.

SUMMARY OF THE INVENTION

[0006] It is therefore a primary object of the present invention to provide a smoke exhaust in which an upright filter mesh assembly is disposed at the sucking mouth of the guiding chamber for easily filtering smoke and collecting oil dirt.

[0007] It is a further object of the present invention to provide the above smoke exhaust in which a guiding face forward and upward extends from the bottom edge of the rear face of the guiding chamber to the sucking mouth, whereby the smoke can be smoothly guided into the sucking mouth. The smooth guiding face has no dead corner so that the smoke exhaust can be easily cleaned up.

[0008] The present invention can be best understood through the following description and accompanying drawings wherein:

BRIEF DESCRIPTION OF THE DRAWINGS

[0009]FIG. 1 is a perspective view of the present invention;

[0010]FIG. 2 is a sectional view taken along line II-II of FIG. 1;

[0011]FIG. 3 is a sectional view taken along line III-III of FIG. 1;

[0012]FIG. 4 is a perspective view of the filter mesh assembly of the present invention;

[0013]FIG. 5 is a sectional view taken along line V-V of FIG. 4;

[0014]FIG. 6 is a perspective view of a second embodiment of the present invention;

[0015]FIG. 7 is a sectional view taken along line VII-VII of FIG. 6;

[0016]FIG. 8 is a sectional view taken along line VIII-VIII of FIG. 6;

[0017]FIG. 9 shows the use of a conventional smoke exhaust; and

[0018]FIG. 10 is a perspective view of another type of conventional smoke exhaust.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Please refer to FIGS. 1 to 5. The smoke exhaust of the present invention includes a housing 1 formed with two spaces. One of the spaces is a wind chamber 11 for creating pressure, while the other is a guiding chamber 12 for guiding the smoke to be sucked in. The wind chamber 11 has an outlet 112 communicating with outer side of the housing 1 and an inlet 111 communicating with the guiding chamber 12. A motor 13 is disposed in the wind chamber 11 for driving a blowing fan 14 so as to create pressure. The guiding chamber 12 surrounds the wind chamber 11 and has a sucking mouth 15 communicating with outer side. The guiding chamber 12 has a compartment 121 defined between the inlet 111 of the wind chamber 11 and the sucking mouth 15 of the guiding chamber 12 for air to smoothly flow therethrough. The guiding chamber 12 has a rear face 122 formed with a bottom edge 123. A guiding face 124 forward and upward extends from the bottom edge 123 to the sucking mouth 15 for guiding smoke. The guiding chamber 12 further has two downward extending side walls 125, 126. The side walls 125, 126 and the guiding face 124 define therebetween a smoke collecting space 127.

[0020] The sucking mouth 15 has a top face 151 and a bottom face 152 respectively formed with an upper and a lower locating dents 153, 154. Two upright filter mesh assemblies 2 are disposed between the upper and lower locating dents 153, 154. Two upper leaf springs 155 are disposed in the upper locating dent 153 for resiliently downward pressing and locating the filter mesh assemblies 2 in the upper and lower locating dents 153, 154.

[0021] The filter mesh assembly 2 includes a frame body 21 in which a filter mesh 22 is disposed. The bottom of the frame body 21 is formed with a sink 23 having an opening 231. An oil cup 24 is placed into or taken out from the sink 23 through the opening 231. The frame body 21 has a window 25 between the sink 23 and the filter mesh 22, whereby the oil dirt accumulating on the filter mesh 22 can flow through the window 25 into the oil cup 24.

[0022] The upright filter mesh assembly 2 is disposed at the sucking mouth 15 of the guiding chamber 12, whereby the filter mesh 22 of the filter mesh assembly 2 can stop the oil particles entrained by the air. After a certain amount of oil dirt accumulates on the filter mesh 22, the oil dirt will flow downward along the upright filter mesh 22 through the window 25 of the frame body 21 into the oil cup 24. Accordingly, the oil is filtered and collected in the oil cup. The upright filter mesh 22 prevents the oil dirt from dropping down so as to keep the environment sanitary and safe. When the oil dirt accumulates in the oil cup 24 to a certain amount, the user can take off the entire filter mesh assembly 2 and then extract the oil cup 24 for replacement. When mounting the filter mesh assembly 2, the user only needs to first insert the upper edge of the frame body 21 into the upper locating dent 153 to upward press the upper leaf spring 155. Then the lower edge of the frame body 21 is aimed at the lower locating dent 154. At this time, by means of the resilient force of the upper leaf spring 155, the frame body 21 is pressed downward, whereby the frame body 21 is located in the upper and lower locating dents 217, 218.

[0023] Moreover, the oil entrained by the air sucked into the guiding chamber 12 is stopped and filtered by the filter mesh 22. Therefore, there is no oil dirt accumulating in the guiding chamber 12 so that it is unnecessary to dispose an oil cup in the guiding chamber 12. Accordingly, the guiding face 124 can be designed as a smooth arch face forward and upward extending from the bottom edge 123 of the rear face 122 of the guiding chamber 12 to the sucking mouth 15, whereby the smoke can be smoothly guided into the sucking mouth 15. The smooth guiding face 124 has no dead corner so that it can be easily cleaned up. Furthermore, when seen from front side of the smoke exhaust, the sucking mouth 15 is invisible and only the smooth guiding face 124 can be seen so that the appearance of the smoke exhaust is beautified.

[0024] In conclusion, the upright filter mesh assembly 2 is disposed at the sucking mouth 15 of the guiding chamber 12. The upright filter mesh 22 can easily filter and collect the oil dirt. In addition, the smooth guiding face 124 forward and upward extends from the bottom edge 123 of the rear face 122 of the guiding chamber 12 to the sucking mouth 15, whereby the smoke can be smoothly guided into the sucking mouth 15. The smooth guiding face 124 has no dead corner so that it can be easily cleaned up.

[0025] FIGS. 6 to 8 show a second embodiment of the present invention, in which the guiding chamber 32 has a bent section 328 on front side of the housing 3 and the sucking mouth 35 is directed rearward. The guiding face 324 forward and upward extending from the bottom edge 323 of the rear face 322 of the guiding chamber 32 to the upper edge of the sucking mouth 35, whereby the sucking mouth 35 faces the guiding face 324. The sucking mouth 35 has a left and a right side walls 351, 352 on which two lateral leaf springs 353, 354 are respectively disposed. In addition, the housing 3 has an opening 36 formed at the sucking mouth 35 and facing downward, whereby the filter mesh assembly 4 can be upward mounted at the sucking mouth 35 through the opening 36. The frame body 41 of the filter mesh assembly 4 is formed with a dent 411 corresponding to each of the lateral leaf springs 353, 354 for locating the same. This embodiment can achieve the same effect as the first embodiment. Moreover, the sucking mouth 35 is directed rearward to face the guiding face 324 so that the smoke upward guided by the guiding face 324 can be more smoothly sucked into the sucking mouth 35.

[0026] The above embodiments are only used to illustrate the present invention, not intended to limit the scope thereof. Many modifications of the above embodiments can be made without departing from the spirit of the present invention.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US7654258 *May 17, 2007Feb 2, 2010Unified Brands, Inc.Kitchen ventilation hood apparatus
US20100326419 *Sep 2, 2010Dec 30, 2010Shandong UniversityRange hood
Classifications
U.S. Classification126/299.00D, 126/299.00R
International ClassificationF24C15/20
Cooperative ClassificationF24C15/20
European ClassificationF24C15/20