CA2167555A1 - Smoke exhauster - Google Patents
Smoke exhausterInfo
- Publication number
- CA2167555A1 CA2167555A1 CA002167555A CA2167555A CA2167555A1 CA 2167555 A1 CA2167555 A1 CA 2167555A1 CA 002167555 A CA002167555 A CA 002167555A CA 2167555 A CA2167555 A CA 2167555A CA 2167555 A1 CA2167555 A1 CA 2167555A1
- Authority
- CA
- Canada
- Prior art keywords
- enclosure
- plate
- smoke exhauster
- hood plate
- hood
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C9/00—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks
Landscapes
- Ventilation (AREA)
Abstract
A smoke exhauster comprises an enclosure having a fan housing and a hood plate releasably secured thereunder. The enclosure has a plurality of spiral coupling recesses on the top plate thereof for releasable securcing the fan housing by means of a T-shaped fastener. The hood plate has at four corners a sliding catch member positioned in registry with the corresponding locking holes on the enclosure so as to slidingly secured to the enclosure. The hood plate can be suspended from the rear side of the enclosure if the sliding catch member on the rear side is not intended to release. This arrangement provides more faster and convenient assembly or disassembly of the smoke exhauster for facilitating the cleaning of old and grime accumulated thereon.
Description
TITLE:
A smoke exhauster BACKGROUND OF THE INVENTION
The present invention relates to smoke exhauster and more particularly to a structurally improved smoke exhauster which has a quick releasable device for facilitating the rapid and thorough cleaning of the exhauster.
Typical smoke exhauster generally has an enclosure having lateral plates and front penal, a pair of fan rotors enclosed in a fan housing and a hood plate attached to the lower portion of the enclosure.
The smoke exhauster is disposed over a stove or cooking range in a kitchen. The cleaning of the hood plate and fan housing is usually a tiresome task to the user especially a smoke exhauster is found not readily releasable.
In the US Patent No. 5,311857, a pair of pivoting catches at rear side of the hood plate releasably engage with a pair of locking bars respectively on the enclosure and a pair of tabs at the front side of the hood plate are supported by a protrudent edge of the rear penel of the enclosure. The fan housing thereof has a pair of spring catches releasably engaged with a pair of corresponding hook-shaped securing appendages. So that both the hood plate and the fan housing thereof are releasable and facilitate the cleaning of oil and grime accumulated thereon.
However, this smoke exhauster has been found disadvantageous on that the lever of the spring catch is harmful to user's finger when the fan housing engages with enclosure and that the tabs of the hood plate supported by the protrudent edge of the penal are found not so stable because of the deformation of both of the tabs and the protrudent edge. Besides, it is difficult to align the pivoting catches with the locking bars after the tabs are supported on the edge. When the pivoting catches are disengaged with the locking bars, the hood plate must be immediate taken out of the enclosure and laid down on an appropriate plate. This causes a great inconvenience for the user.
SUMMARY OF THE PRESENT INVENTION
The present invention has a main object to provide a structure of smoke exhauster which has a quick releasable device to facilitate a ready assembly and disassembly of thP fan housing and the hood plate from thereon for rapid cleaning the oil and grime accumulated on the surface of the exhauster.
Accordingly, the smoke exhauster of the present invention generally comprises a rectangular enclosure having lateral plates and front penal extended downward from four sides thereof, a fan housing enclosed with contrifugal suction fans therein and a concave hood plate releasably mounted on the lower portion of the enclosure. This invention is characterized in a spiral coupling recess which mounts the fan housing onto the enclosure and a sliding catch member which is used to fix or suspend the hood plate from the enclosure. Both the spiral coupling recess and the sliding catch member are designed to provide more convenient assembly or disassembly of the fan housing and the hood plate from the enclosure as to facilitate rapid eleaning of the oil and grime accumulated thereon.
The present invention will become more fully understood by reference to the following detailed description thereof when read in conjunction with the attached drawings.
A smoke exhauster BACKGROUND OF THE INVENTION
The present invention relates to smoke exhauster and more particularly to a structurally improved smoke exhauster which has a quick releasable device for facilitating the rapid and thorough cleaning of the exhauster.
Typical smoke exhauster generally has an enclosure having lateral plates and front penal, a pair of fan rotors enclosed in a fan housing and a hood plate attached to the lower portion of the enclosure.
The smoke exhauster is disposed over a stove or cooking range in a kitchen. The cleaning of the hood plate and fan housing is usually a tiresome task to the user especially a smoke exhauster is found not readily releasable.
In the US Patent No. 5,311857, a pair of pivoting catches at rear side of the hood plate releasably engage with a pair of locking bars respectively on the enclosure and a pair of tabs at the front side of the hood plate are supported by a protrudent edge of the rear penel of the enclosure. The fan housing thereof has a pair of spring catches releasably engaged with a pair of corresponding hook-shaped securing appendages. So that both the hood plate and the fan housing thereof are releasable and facilitate the cleaning of oil and grime accumulated thereon.
However, this smoke exhauster has been found disadvantageous on that the lever of the spring catch is harmful to user's finger when the fan housing engages with enclosure and that the tabs of the hood plate supported by the protrudent edge of the penal are found not so stable because of the deformation of both of the tabs and the protrudent edge. Besides, it is difficult to align the pivoting catches with the locking bars after the tabs are supported on the edge. When the pivoting catches are disengaged with the locking bars, the hood plate must be immediate taken out of the enclosure and laid down on an appropriate plate. This causes a great inconvenience for the user.
SUMMARY OF THE PRESENT INVENTION
The present invention has a main object to provide a structure of smoke exhauster which has a quick releasable device to facilitate a ready assembly and disassembly of thP fan housing and the hood plate from thereon for rapid cleaning the oil and grime accumulated on the surface of the exhauster.
Accordingly, the smoke exhauster of the present invention generally comprises a rectangular enclosure having lateral plates and front penal extended downward from four sides thereof, a fan housing enclosed with contrifugal suction fans therein and a concave hood plate releasably mounted on the lower portion of the enclosure. This invention is characterized in a spiral coupling recess which mounts the fan housing onto the enclosure and a sliding catch member which is used to fix or suspend the hood plate from the enclosure. Both the spiral coupling recess and the sliding catch member are designed to provide more convenient assembly or disassembly of the fan housing and the hood plate from the enclosure as to facilitate rapid eleaning of the oil and grime accumulated thereon.
The present invention will become more fully understood by reference to the following detailed description thereof when read in conjunction with the attached drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a elevational section illustrating the preferred embodiment according to the present invention, Figure 2 and 2A are the perspective views to show the sliding catch member of the present invention, Figure 3 and 3A are the perspective views to shew a spiral coupling device between the fan housing and the enclosure of the present invention, and Figure 4 is a perspective view to sho~ an assembled smoke exhauster of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
With reference to Fig.1 of the drawings, the smoke exhauster of the present invention comprises generally an enclosure IO, 2 fan housing 20 and a concave hood plate 30.
The enclosure lO is composed of a rectangular housing 11 having a top plate, a pair of lateral plates and a front penal extended downward from four sides thereof. Fan rotor 23 rotatably mounts on motor 12 which in turn mounts to seat 111 on the top plate of the housing 11 and is sealed by sealing members 13 and 112. A curved reinforcement plate 21 is formed under the top plate and connects with the sealing member 13 defining a space therebetween. Vent 113 communicates to an exit 114 which connects to a ventilating pipe 115.
A plurality of spiral coupling recesses 214 have been formed between the top plate of the housing 11 and the reinforcement plate 21 (as shown in Fig.3) which comprises a circular hole 214A abutting a pair of sectorial portions 214B at opposing circumferences on the top plate, a circular hole 214C on the reinforcement plate 21 made in registry with hole 214A
abutting a pair of rectangular portions 214D at opposing circumferences thereof and a pair of sloped strips 214E connect between the top plate and the reinforcement plate 21. The sloped strips 214E each starts from the respective sectorial portion 214B of the top plate and terminates at a respective rectangular portion 214D of the reinforcement plate 21. So that the spiral coupling recess 214 is accomplished thereon. A fastener 215, as shown in Fig.3A is provided to cooperate with the recess 214 which is composed of a hexagon shank 215A and a T-shaped head 215B. Further, the fan housing 22 has al:o a plurality of coupling holes 221 made in registry with holes 214C. To mount the fan housing 22 is to align hole 221 with hole 214C at first and insert the T-shaped head of the fastener 215 into holes 221 and 214C sequentially and then swing shank 215A clockwise so as to slide the transverse portion of the T-shaped head 215B upwardly along the pair of the sloped strips 214E until that the T-shaped head thereof retained on the upper surface of the top plate of the housing 11. Therefore, the fan housing 22 is mounted onto the enclosure 10 easily. This arrangement provides more faster and convenient assembly or disassembly of the fan housing 22.
Referring to Fig.2 and 2A, illustrating a sliding catch member 31 secured to each corner of the hood plate 30 in registry with the locking cavities on the respective positions of the inward walls of the lateral plate of the housing 11. The sliding catch member 31 comprises a lug member of roughly L-shaped section 311, a latch member 312, a compression spring 313 and a retaining ring 314. The lug member 311 has a pair of screw holes 31la on the planar portion made in registry with the corresponding screw holes 301 on the flanges of the hood plate 30, an axial aperture 31lb through each of it's upright ears. The latch member 312 has a press tab 312a, a locking rod 312b longer than the lug member 311 and an annular groove 312c on the outer 21 b7555 periphery of the locking rod 312b. When assembling, dispose the spring 313 into the space between the ears of the lug member 311 and insert the locking rod 312b of the latch member through the apertures 311b and the spring 313 and then secure the retaining ring 314 into the groove 312c. So that the latch member 312 is retained and biased by spring 313 and slides about the lug member 311 therewithin.
The sliding catch member 31 is screw secured to each corner of the upper surface of the flanges of the hood plate 30 as shown in Fig.2. With that the catGh members 31 of the front side of the hood plate 30 turn their press tabs downward and passed through the rectangular recesses 302 on the flange so as to have the press tabs to be accessible from the under side and sliding about the recesses 302 therein, and the catch members 31 on the rear side of the hood plate 30 turn their press tabs upward so as to be accessible from the top of the hood plate 30.
When assembly, engage the sliding catch members 31 on the rearside with the respective locking holes (not shown) on the enclosure 10 at first so that the hood plate 30 is suspended from the rear side of the enclosure 10. Then swing the hood plate 30 into place of the front side of the enclosure 10 and appl~ the press tabs of the two catch members 31 simultaneously to insert to locking rods 312b into their respective locking recesses on the enclosure 10 by the urge of the springs 313. So that the hood plate 30 completely mounts onto the enclosure 10 as shown in Fig.4.
Upon this arrangement, the sliding catch member 31 not only provides ready and faster engagement of the hood plate 30 with enclosure 10 but also provides a chance to hang up the hood plate 30 on the rear side of the enclosure 10 if the user has no intention to remove the hood plate 30 from the enclosure 10 when cleaning or fixing the fan housing 20 or the rotors therein.
Note that the specification relating to the above embodiment should be construed as to exemplary rather than as limitative of the present invention, with many variations and modifications being readily attainable by a person of average skill in the art without departing from the spirit or scope thereof as defined by the appended claims and their legal equivalents.
Figure 1 is a elevational section illustrating the preferred embodiment according to the present invention, Figure 2 and 2A are the perspective views to show the sliding catch member of the present invention, Figure 3 and 3A are the perspective views to shew a spiral coupling device between the fan housing and the enclosure of the present invention, and Figure 4 is a perspective view to sho~ an assembled smoke exhauster of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
With reference to Fig.1 of the drawings, the smoke exhauster of the present invention comprises generally an enclosure IO, 2 fan housing 20 and a concave hood plate 30.
The enclosure lO is composed of a rectangular housing 11 having a top plate, a pair of lateral plates and a front penal extended downward from four sides thereof. Fan rotor 23 rotatably mounts on motor 12 which in turn mounts to seat 111 on the top plate of the housing 11 and is sealed by sealing members 13 and 112. A curved reinforcement plate 21 is formed under the top plate and connects with the sealing member 13 defining a space therebetween. Vent 113 communicates to an exit 114 which connects to a ventilating pipe 115.
A plurality of spiral coupling recesses 214 have been formed between the top plate of the housing 11 and the reinforcement plate 21 (as shown in Fig.3) which comprises a circular hole 214A abutting a pair of sectorial portions 214B at opposing circumferences on the top plate, a circular hole 214C on the reinforcement plate 21 made in registry with hole 214A
abutting a pair of rectangular portions 214D at opposing circumferences thereof and a pair of sloped strips 214E connect between the top plate and the reinforcement plate 21. The sloped strips 214E each starts from the respective sectorial portion 214B of the top plate and terminates at a respective rectangular portion 214D of the reinforcement plate 21. So that the spiral coupling recess 214 is accomplished thereon. A fastener 215, as shown in Fig.3A is provided to cooperate with the recess 214 which is composed of a hexagon shank 215A and a T-shaped head 215B. Further, the fan housing 22 has al:o a plurality of coupling holes 221 made in registry with holes 214C. To mount the fan housing 22 is to align hole 221 with hole 214C at first and insert the T-shaped head of the fastener 215 into holes 221 and 214C sequentially and then swing shank 215A clockwise so as to slide the transverse portion of the T-shaped head 215B upwardly along the pair of the sloped strips 214E until that the T-shaped head thereof retained on the upper surface of the top plate of the housing 11. Therefore, the fan housing 22 is mounted onto the enclosure 10 easily. This arrangement provides more faster and convenient assembly or disassembly of the fan housing 22.
Referring to Fig.2 and 2A, illustrating a sliding catch member 31 secured to each corner of the hood plate 30 in registry with the locking cavities on the respective positions of the inward walls of the lateral plate of the housing 11. The sliding catch member 31 comprises a lug member of roughly L-shaped section 311, a latch member 312, a compression spring 313 and a retaining ring 314. The lug member 311 has a pair of screw holes 31la on the planar portion made in registry with the corresponding screw holes 301 on the flanges of the hood plate 30, an axial aperture 31lb through each of it's upright ears. The latch member 312 has a press tab 312a, a locking rod 312b longer than the lug member 311 and an annular groove 312c on the outer 21 b7555 periphery of the locking rod 312b. When assembling, dispose the spring 313 into the space between the ears of the lug member 311 and insert the locking rod 312b of the latch member through the apertures 311b and the spring 313 and then secure the retaining ring 314 into the groove 312c. So that the latch member 312 is retained and biased by spring 313 and slides about the lug member 311 therewithin.
The sliding catch member 31 is screw secured to each corner of the upper surface of the flanges of the hood plate 30 as shown in Fig.2. With that the catGh members 31 of the front side of the hood plate 30 turn their press tabs downward and passed through the rectangular recesses 302 on the flange so as to have the press tabs to be accessible from the under side and sliding about the recesses 302 therein, and the catch members 31 on the rear side of the hood plate 30 turn their press tabs upward so as to be accessible from the top of the hood plate 30.
When assembly, engage the sliding catch members 31 on the rearside with the respective locking holes (not shown) on the enclosure 10 at first so that the hood plate 30 is suspended from the rear side of the enclosure 10. Then swing the hood plate 30 into place of the front side of the enclosure 10 and appl~ the press tabs of the two catch members 31 simultaneously to insert to locking rods 312b into their respective locking recesses on the enclosure 10 by the urge of the springs 313. So that the hood plate 30 completely mounts onto the enclosure 10 as shown in Fig.4.
Upon this arrangement, the sliding catch member 31 not only provides ready and faster engagement of the hood plate 30 with enclosure 10 but also provides a chance to hang up the hood plate 30 on the rear side of the enclosure 10 if the user has no intention to remove the hood plate 30 from the enclosure 10 when cleaning or fixing the fan housing 20 or the rotors therein.
Note that the specification relating to the above embodiment should be construed as to exemplary rather than as limitative of the present invention, with many variations and modifications being readily attainable by a person of average skill in the art without departing from the spirit or scope thereof as defined by the appended claims and their legal equivalents.
Claims (6)
1. A smoke exhauster comprising:
an enclosure composed of a housing having a top plate, a pair of lateral plates and a front penal, vant member communicating to an exit at the top of said housing, at least one motor with at least a suction fan rotatably coupled thereunder, said at least one motor secured under the top plate of said housing;
a fan housing disposed within said enclosure surrounding said suction fan and said vant member;
at least one spiral coupling recess on the top plate in registry with at least one circular hole of equal diameter on said fan housing which is releasably secured to the top plate by means of fasteners;
a concave hood plate releasably attached under said enclosure by means of at least one sliding catch member;
at least one locking hole on the inner wall of the lateral plates of said enclosure positioned in registry with said at least one sliding catch member;
whereby, said fan housing and said hood plate are readily attached to or removed from said enclosure.
an enclosure composed of a housing having a top plate, a pair of lateral plates and a front penal, vant member communicating to an exit at the top of said housing, at least one motor with at least a suction fan rotatably coupled thereunder, said at least one motor secured under the top plate of said housing;
a fan housing disposed within said enclosure surrounding said suction fan and said vant member;
at least one spiral coupling recess on the top plate in registry with at least one circular hole of equal diameter on said fan housing which is releasably secured to the top plate by means of fasteners;
a concave hood plate releasably attached under said enclosure by means of at least one sliding catch member;
at least one locking hole on the inner wall of the lateral plates of said enclosure positioned in registry with said at least one sliding catch member;
whereby, said fan housing and said hood plate are readily attached to or removed from said enclosure.
2. A smoke exhauster according to claim 1, wherein said at least one spiral recess each comprises:
a first circular hole on the top plate having abutted a pair of sectorial portions at opposing circumferences thereof;
a second circular hole on a reinforcement plate under the top plate having equal diameter to said first circular hole and abutted a pair of rectangular portions at opposing circumferences thereof;
a pair of sloped strip members respectively connected with said rectangular portions and said sectorial portion between said first and second circular holes.
a first circular hole on the top plate having abutted a pair of sectorial portions at opposing circumferences thereof;
a second circular hole on a reinforcement plate under the top plate having equal diameter to said first circular hole and abutted a pair of rectangular portions at opposing circumferences thereof;
a pair of sloped strip members respectively connected with said rectangular portions and said sectorial portion between said first and second circular holes.
3. A smoke exhauster according to claim 1 wherein said fastener comprises a hexagon shank and a T-shaped head on the top end of said shank.
4. A smoke exhauster according to claim 1 wherein said at least one sliding catch member screw secured at each corner on the upper surface of the flanges of said hood plate, each comprises:
a lug member of L-shaped section having a plurality of screw hole on the planar portion thereof and made in registry with corresponding screw holes on the corners of said hood plate, an axial recess on each of the upright ears thereof;
a latch member having a press tab and a locking rod extended transversely therefrom with an annular groove on an outer periphery thereof, said latch member having it's locking rod inserted through the axial recesses of said upright ears and a biasing spring and secured by means of a retaining ring within said annular groove thereof between said upright ears so that said latch member can slide about said lug member therewithin.
a lug member of L-shaped section having a plurality of screw hole on the planar portion thereof and made in registry with corresponding screw holes on the corners of said hood plate, an axial recess on each of the upright ears thereof;
a latch member having a press tab and a locking rod extended transversely therefrom with an annular groove on an outer periphery thereof, said latch member having it's locking rod inserted through the axial recesses of said upright ears and a biasing spring and secured by means of a retaining ring within said annular groove thereof between said upright ears so that said latch member can slide about said lug member therewithin.
5. A smoke exhauster according to claim 4, wherein said at least one catch member on the front side of said hood plate turns it's presse tab downward and slidingly received by a rectangular recess on said hood plate.
6. A smoke exhauster according to claim 4, wherein said at least one catch member on the rear side of said hood plate remains its press tab toward upward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002167555A CA2167555A1 (en) | 1996-01-18 | 1996-01-18 | Smoke exhauster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002167555A CA2167555A1 (en) | 1996-01-18 | 1996-01-18 | Smoke exhauster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2167555A1 true CA2167555A1 (en) | 1997-07-19 |
Family
ID=4157380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002167555A Abandoned CA2167555A1 (en) | 1996-01-18 | 1996-01-18 | Smoke exhauster |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2167555A1 (en) |
-
1996
- 1996-01-18 CA CA002167555A patent/CA2167555A1/en not_active Abandoned
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued | ||
| FZDE | Discontinued |
Effective date: 20030120 |