CN212377371U - Check valve for range hood - Google Patents
Check valve for range hood Download PDFInfo
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- CN212377371U CN212377371U CN202020124931.3U CN202020124931U CN212377371U CN 212377371 U CN212377371 U CN 212377371U CN 202020124931 U CN202020124931 U CN 202020124931U CN 212377371 U CN212377371 U CN 212377371U
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Abstract
The utility model relates to a check valve for a range hood, which comprises an outer cover, a cavity is arranged in the outer cover, and the inner cover is provided with a smoke inlet which is used for being in fluid communication with an air outlet of the range hood and a smoke outlet which is used for being connected with a common flue and is communicated with the common flue; a valve body disposed within the cavity and having a vent for fluid communication with the smoke inlet and the smoke outlet; the valve plate can be arranged on the ventilation opening in a rotating mode relative to the valve body, and the ventilation opening is closed in a natural state; the plane of the smoke outlet of the outer cover is gradually inclined towards the direction far away from the air vent from bottom to top, and the valve plate is at least partially positioned in the containing cavity when the air vent is in an open state. When the outer cover is arranged in the public flue, the outer cover is wholly in an inclined state, the ventilation opening is in an open state, the valve plate is at least partially positioned in the containing cavity, oil smoke gas flow discharged by the ventilation opening flows upwards under the flow guiding effect of the outer cover and flows along the smoke discharging direction of the public flue, and the smoke discharging resistance is slowed down to achieve the purpose of smooth smoke discharging.
Description
Technical Field
The utility model belongs to the technical field of range hood, concretely relates to check valve for range hood.
Background
At present, a common flue is generally used in a household building, and oil smoke exhausted by a range hood of each household enters the common flue from the range hood and then is exhausted from the upper part of the house.
Chinese utility model patent "a monolithic valve flue fire prevention check valve" as applicant's prior application, its patent number is ZL201721338030.9 (the publication number of granting is CN207246494U) discloses a monolithic valve flue fire prevention check valve, including base, valve body, dustcoat and valve block, at dustcoat internally mounted have the fuse link support, install the fuse link on the fuse link support, still be equipped with the knot pole that is used for closing the valve block in the dustcoat inside, its characterized in that: two guide side plates which are arranged oppositely are arranged in the outer cover, a guide groove is formed in each guide side plate, two ends of the buckling rod are limited in the guide grooves of the corresponding sides respectively, an elastic piece is further arranged in the outer cover and connected to two ends of the buckling rod, and the buckling rod is kept to slide along the guide grooves and tends to close the valve plate. The two ends of the buckling rod of the single-piece valve flue fireproof check valve are respectively limited in the guide grooves corresponding to the guide side plates, the buckling rod is further limited on the fuse link, when the fuse link is fused, the buckling rod can move along the guide grooves on the two sides under the action of the elastic piece to forcibly close the valve block, and the buckling rod can reliably close the valve block, so that a smoke pipe and a public flue of the range hood are effectively isolated, and the smoke pipe is prevented from being on fire. Because the oil smoke gas flow in the public flue flows upwards along the public flue, when the smoke discharge resistance of the public flue is large, the check valve of the patent discharges smoke downwards usually when the valve plate is opened, resistance is generated on the oil smoke gas flow in the public flue, and the smoke discharge resistance of the public flue is increased.
In order to solve the technical problem, as chinese utility model patent "small resistance cigarette machine inclined check valve", its patent number is ZL201320348047.8 (the publication number of granting is CN203336668U) discloses a small resistance cigarette machine inclined check valve, sets up between smoke ventilator and wall inner flue, is fixed as an organic whole by check valve air-supply line and check valve exhaust section of thick bamboo, and the oil smoke passageway that the two constitutes is the tilt up state, wherein: the air inlet pipe of the check valve is of an inclined structure, the lower end of the air inlet pipe is an oil smoke inlet connected with an oil smoke pipe of the range hood, the higher end of the air inlet pipe is an oil smoke outlet, and the air outlet cylinder of the check valve is arranged at the oil smoke outlet; the check valve air outlet cylinder comprises a valve leaf mounting cylinder, a fixing piece arranged on a cylinder body of the valve leaf mounting cylinder and a valve leaf which is arranged at the outer end of the valve leaf mounting cylinder and is opened outwards in a one-way mode, and the cylinder body of the valve leaf mounting cylinder is designed in an inclined mode; the oil smoke pumped by the smoke exhaust ventilator passes through the oil smoke inlet, the check valve air inlet pipe and the check valve air outlet cylinder in sequence through the oil smoke pipe and is discharged into the flue arranged in the wall body in an inclined and upward manner. This patent stops valve air-supply line (also the shell) and adopts the slope form of setting, and when the valve block was opened, the exhaust oil smoke had reduced the resistance of discharging fume along public flue's the direction of discharging fume, but the valve block lies in public flue completely, and when the oil smoke export was opened, the oil smoke gas stream in the public flue can hinder opening of valve block and produce the interference, and simultaneously, the valve block after opening lies in public flue completely, can increase the resistance of discharging fume, and arouses the shake of valve block easily.
Therefore, further improvements to existing check valves are needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to the current situation of above-mentioned prior art, a reduce the check valve for range hood of the smooth and easy purpose of resistance in order to reach discharging fume at the range hood during operation is provided.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: a check valve for a range hood comprises
The outer cover is internally provided with a cavity, and the cavity of the outer cover is provided with a smoke inlet which is used for being in fluid communication with the air outlet of the range hood and a smoke outlet which is used for being connected with the common flue and is communicated with the common flue;
a valve body disposed within the cavity of the housing and having a vent for fluid communication with the smoke inlet and the smoke outlet;
the valve plate is arranged on the ventilation opening of the valve body in a manner of rotating relative to the valve body and is used for opening and closing the ventilation opening, and the ventilation opening is closed in a natural state;
the method is characterized in that: the plane of the smoke outlet of the outer cover is gradually inclined towards the direction far away from the ventilation opening from bottom to top, and the valve plate is at least partially positioned in the containing cavity when the ventilation opening is in an open state.
In order to enable the oil fume flow discharged by the range hood to flow along the airflow direction of a subsequent common flue, the valve body is vertically arranged in the outer cover, the lower part of the valve plate is provided with a rotating shaft, and the valve plate is rotatably arranged on the valve body through the rotating shaft. So, upwards discharge fume when the valve block is opened to along the oil smoke gas stream flow to in the public flue under the guide effect of dustcoat, reduced the resistance of discharging fume.
In order to realize the pivoted connection of valve block, be provided with the support on the position of the neighbouring exhaust port of valve body, the support is provided with first mounting panel and second mounting panel respectively on the position that corresponds the pivot both ends, the both ends of pivot are rotated respectively and are connected on first mounting panel and the second mounting panel.
In order to prevent the oil smoke gas flow of the common flue from interfering the opening of the valve plate when the valve plate is completely in the opening state, the valve plate is positioned in the containing cavity when the ventilation opening is in the maximum angle opening state.
In order to ensure that the valve plate automatically closes the vent when the range hood is in a closed state, the range hood further comprises a first elastic piece, wherein the first elastic piece acts on the valve plate and enables the valve plate to always have a tendency of moving towards the direction of closing the vent.
The first elastic part has multiple structural forms, but preferably, the first elastic part is a torsion spring sleeved on the rotating shaft, a first force application end of the torsion spring abuts against the valve body, and a second force application end of the torsion spring abuts against the surface of the valve plate deviating from the vent.
In order to prevent the oil smoke from flowing backwards under the fire state of the public flue, one side of the valve body, which deviates from the ventilation opening, is provided with a pressing rod for driving the valve plate to rotate towards the direction of the smoke exhaust opening, the extending direction of the pressing rod is consistent with the extending direction of the rotating shaft and is limited at the lower part of the valve plate through a fuse part, two side plates which are arranged oppositely are installed on the outer side of the valve body, each side plate is provided with a guide groove which is used for accommodating the corresponding end part of the pressing rod to slide relatively in the guide groove, the pressing rod is connected with a second elastic part, and the second elastic part overcomes the limitation effect of the fuse part to enable the pressing rod to always have the trend of sliding along the guide groove towards the direction. Therefore, when the public flue is on fire, the fuse link is in a fused state, and the second elastic piece is separated from the limit of the fuse link to enable the pressure rod to move so as to close the vent.
The second elastic member has various structural forms, but preferably, the second elastic member is a tension spring disposed outside the valve body, and two ends of the tension spring are respectively fixed to the end portions of the compression bar exposed out of the corresponding guide grooves.
In order to slow down the wearing and tearing to the valve body lateral wall, the whole shape of extension spring is the U type, the middle part of extension spring is the rigidity pole, and is in under the check valve is in normal use state, the rigidity pole hugs closely on the lateral wall of valve body. So, on the one hand, reduced the wearing and tearing of valve body lateral wall, prolonged the life of valve body, on the other hand has reduced the energy loss of extension spring for the depression bar realizes closing of vent more reliably under the effect of extension spring.
Compared with the prior art, the smoke outlet of the outer cover of the check valve is the mounting port for connecting the outer cover with the public flue, the plane where the smoke outlet of the outer cover is located is inclined from bottom to top towards the direction away from the ventilation port, the outer cover is integrally inclined when the outer cover is mounted in the public flue, when the range hood normally works, the valve block is located in the containing cavity, and the oil smoke flow in the public flue can not interfere with the primary opening of the valve block; and when the ventilation opening is in an open state, the valve plate is at least partially positioned in the cavity of the outer cover, the oil smoke gas flow discharged by the ventilation opening flows upwards under the flow guiding effect of the outer cover and flows along the smoke discharging direction of the public flue, and the smoke discharging resistance is reduced, so that the aim of smooth smoke discharging is fulfilled.
Drawings
Fig. 1 is a schematic view of an assembly structure of a check valve, a range hood and a common flue according to an embodiment of the present invention (a valve plate is partially located in a cavity when a vent is in an open state);
FIG. 2 is a schematic view of an assembly structure of the check valve and the common flue according to the present embodiment;
FIG. 3 is a cross-sectional view of the check valve plate of FIG. 2;
FIG. 4 is a schematic view of the vent of FIG. 2 in a closed position;
FIG. 5 is a cross-sectional view of the check valve of FIG. 4 with the vent opening closed;
FIG. 6 is a schematic structural view of the vent in the closed state in the present embodiment;
fig. 7 is a partial structural schematic diagram of fig. 6.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 1 to 7, the check valve for a range hood according to an embodiment of the present invention includes an outer cover 1, a valve body 2, a valve plate 3, a fuse 4, a first elastic member, a second elastic member, and a compression bar 6.
As shown in fig. 2 to 6, the housing 1 has a cavity 11 therein, the cavity 11 of the housing 1 has a smoke inlet 111 for fluid communication with the air outlet 81 of the range hood 8 and a smoke outlet 112 for fluid communication with the common flue 9, and specifically, the air outlet 81 of the range hood 8 is connected to the smoke inlet 111 of the housing 1 through a connecting pipe 82; in addition, the top surface 13 and the bottom surface 14 of the outer cover 1 are substantially parallel, the smoke outlet 112 is connected to the common flue 9, the smoke outlet 112 is a mounting port connected to the common flue 9, the plane 12 where the smoke outlet 112 of the outer cover 1 is located is gradually inclined from bottom to top in a direction away from the following vent 20, and the plane 12 is a mounting surface in contact with the common flue 9, so that when the outer cover of the check valve is mounted on the common flue 9, the check valve is gradually inclined from bottom to top in a direction away from the common flue 9, that is, the check valve is gradually inclined from bottom to top in a direction towards the smoke inlet 111, as shown in fig. 1 and fig. 2.
As shown in fig. 2 and 3, the valve body 2 is vertically arranged in the cavity 11 of the housing 1, and the valve body 2 is provided with a ventilation opening 20 for being in fluid communication with a smoke inlet 111 and a smoke outlet 112; the valve plate 3 is rotatably arranged on the vent 20 of the valve body 2 relative to the valve body 2 and used for opening and closing the vent 20, and the valve plate 3 is positioned in the accommodating cavity of the outer cover 1 when the vent 20 is in a closed state; in this embodiment, as shown in fig. 3, a rotating shaft 31 is disposed at a lower portion of the valve plate 3, the valve plate 3 is rotatably disposed on the valve body 2 through the rotating shaft 31, specifically, as shown in fig. 4 to 7, a bracket 21 is disposed at a position of the valve body 2 adjacent to the smoke discharge port 112, the bracket 21 is disposed below the ventilation port 20, the bracket 21 is respectively disposed at positions corresponding to two ends of the rotating shaft 31 and is provided with a first mounting plate 211 and a second mounting plate 212, and two ends of the rotating shaft 31 are respectively rotatably connected to the first mounting plate 211 and the second mounting plate 212. In a natural state, the valve plate 3 closes the vent 20; when the range hood 8 is in a normal working state, the vent 20 is in an open state, and the valve plate 3 is partially positioned in the cavity 11 when the vent 20 is in the open state, which is specifically shown in fig. 1; in addition, the valve plate 3 can be always located in the cavity 11 when the vent 20 is in the open state, and a gap is left between the valve plate 3 and the smoke outlet 112 when the valve plate 3 is in the maximum opening angle state, as shown in fig. 2.
As shown in fig. 7, the first elastic member acts on the valve plate 3 and makes the valve plate 3 always have a tendency of moving toward the direction of closing the vent opening 20, specifically, the first elastic member is a torsion spring 5 sleeved on the rotating shaft 31, there are two torsion springs 5, the first force applying end 52 of each torsion spring 5 abuts against the valve body 2, and the second force applying end 51 of each torsion spring 5 abuts against the surface of the valve plate 3 away from the vent opening 20.
In addition, as shown in fig. 5 to 7, a pressure lever 6 for driving the valve plate 3 to rotate towards the direction of the vent 20 is arranged on one side of the valve body 2 away from the vent 20, the extending direction of the pressure lever 6 is consistent with the extending direction of the rotating shaft 31, the pressure lever 6 is limited at the lower part of the valve plate 3 through a fuse part 4, two side plates 22 which are arranged oppositely are installed on the outer side of the valve body 2, a guide groove 221 for accommodating the corresponding end part of the pressure lever 6 to slide relatively therein is formed in each side plate 22, a second elastic part is connected to the pressure lever 6, and the second elastic part overcomes the limiting effect of the fuse part 4 to enable the pressure lever 6 to always have the tendency of sliding towards the direction away from the rotating shaft 31 along the. The second elastic member is a tension spring 7 disposed outside the valve body 2, and two ends of the tension spring 7 are respectively fixed to the end portions of the pressure rod 6 exposed outside the corresponding guide grooves 221. The tension spring 7 is U-shaped, the middle part of the tension spring 7 is a rigid rod 71, and the rigid rod 71 is tightly attached to the outer side wall of the valve body 2 when the check valve is in a normal use state, as shown in fig. 7.
The term "fluid communication" as used herein refers to a spatial relationship between two components or portions (hereinafter collectively referred to as a first portion and a second portion), i.e., a fluid (gas, liquid or a mixture of both) can flow along a flow path from the first portion or/and be transported to the second portion, and may be directly communicated between the first portion and the second portion, or indirectly communicated between the first portion and the second portion via at least one third member, which may be a fluid passage such as a pipe, a channel, a duct, a flow guide, a hole, a groove, or a chamber allowing the fluid to flow therethrough, or a combination thereof.
Claims (9)
1. A check valve for a range hood comprises
The range hood comprises a housing (1), wherein a cavity (11) is formed in the housing (1), and the cavity (11) of the housing (1) is provided with a smoke inlet (111) which is used for being in fluid communication with an air outlet (81) of a range hood (8) and a smoke outlet (112) which is used for being connected with a common flue (9) and is communicated with the common flue (9);
the valve body (2) is arranged in the cavity (11) of the outer cover (1), and the valve body (2) is provided with a ventilation opening (20) which is used for being in fluid communication with the smoke inlet (111) and the smoke outlet (112);
the valve plate (3) is arranged on the ventilation opening (20) of the valve body (2) in a manner of rotating relative to the valve body (2) and is used for opening and closing the ventilation opening (20), and the ventilation opening (20) is closed in a natural state;
the method is characterized in that: the plane (12) on which the smoke outlet (112) of the outer cover (1) is located gradually inclines away from the direction of the vent (20) from bottom to top, and the valve plate (3) is located in the accommodating cavity (11) at least in part when the vent (20) is in an open state.
2. The non-return valve according to claim 1, characterized in that: the vertical setting of valve body (2) is in dustcoat (1), the lower part of valve block (3) is provided with pivot (31), valve block (3) rotate through pivot (31) and set up on valve body (2).
3. The non-return valve according to claim 2, characterized in that: be provided with support (21) on the position of valve body (2) neighbouring exhaust port (112), support (21) are provided with first mounting panel (211) and second mounting panel (212) respectively on the position that corresponds pivot (31) both ends, the both ends of pivot (31) are rotated respectively and are connected on first mounting panel (211) and second mounting panel (212).
4. The non-return valve according to claim 2, characterized in that: the valve plate (3) is located in the accommodating cavity (11) when the vent (20) is in the maximum angle opening state.
5. The non-return valve according to claim 2, characterized in that: the valve plate is characterized by further comprising a first elastic piece, wherein the first elastic piece acts on the valve plate (3) and enables the valve plate (3) to always have a tendency of moving towards the direction of closing the vent (20).
6. The non-return valve according to claim 5, characterized in that: the first elastic piece is sleeved on a torsion spring (5) on the rotating shaft (31), a first force application end (52) of the torsion spring (5) is abutted to the valve body (2), and a second force application end (51) of the torsion spring (5) is abutted to the surface of the valve plate (3) deviating from the ventilation opening (20).
7. The non-return valve according to any of claims 2 to 6, characterized in that: valve body (2) is deviating from one side of vent (20) is provided with and is used for the drive valve block (3) is spacing towards vent (20) direction pivoted depression bar (6), the extending direction of depression bar (6) with the extending direction of pivot (31) is unanimous, and this depression bar (6) are spacing through fuse-link (4) the lower part of valve block (3), two blocks of curb plates (22) of mutual disposition are installed to the outside of valve body (2), every set up on curb plate (22) and hold corresponding tip that depression bar (6) are in wherein relative slip's guide way (221), be connected with the second elastic component on depression bar (6), the second elasticity overcomes fuse-link (4) limiting action makes depression bar (6) have all the time along guide way (221) towards keeping away from pivot (31) direction gliding trend.
8. The non-return valve according to claim 7, characterized in that: the second elastic piece is a tension spring (7) arranged on the outer side of the valve body (2), and two ends of the tension spring (7) are respectively fixed on the end part of the pressure lever (6) exposed out of the corresponding guide groove (221).
9. The check valve of claim 8, wherein: the whole shape of extension spring (7) is the U type, the middle part of extension spring (7) is rigidity pole (71), and is in under the check valve is in normal use state, rigidity pole (71) hug closely on the lateral wall of valve body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020124931.3U CN212377371U (en) | 2020-01-19 | 2020-01-19 | Check valve for range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020124931.3U CN212377371U (en) | 2020-01-19 | 2020-01-19 | Check valve for range hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212377371U true CN212377371U (en) | 2021-01-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020124931.3U Active CN212377371U (en) | 2020-01-19 | 2020-01-19 | Check valve for range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212377371U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113790291A (en) * | 2021-10-22 | 2021-12-14 | 广州市彩蝶节能技术有限公司 | Fireproof check valve |
| CN113864499A (en) * | 2021-10-22 | 2021-12-31 | 广州市彩蝶节能技术有限公司 | Fireproof check valve with internal and external double fireproof functions |
| CN113864492A (en) * | 2021-10-22 | 2021-12-31 | 广州市彩蝶节能技术有限公司 | Outer water conservancy diversion formula fire prevention check valve |
| CN114440277A (en) * | 2022-01-28 | 2022-05-06 | 宁波方太厨具有限公司 | Fume exhaust fan |
-
2020
- 2020-01-19 CN CN202020124931.3U patent/CN212377371U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113790291A (en) * | 2021-10-22 | 2021-12-14 | 广州市彩蝶节能技术有限公司 | Fireproof check valve |
| CN113864499A (en) * | 2021-10-22 | 2021-12-31 | 广州市彩蝶节能技术有限公司 | Fireproof check valve with internal and external double fireproof functions |
| CN113864492A (en) * | 2021-10-22 | 2021-12-31 | 广州市彩蝶节能技术有限公司 | Outer water conservancy diversion formula fire prevention check valve |
| CN113864499B (en) * | 2021-10-22 | 2024-03-15 | 广州市彩蝶节能技术有限公司 | Fireproof check valve with inner and outer fireproof functions |
| CN114440277A (en) * | 2022-01-28 | 2022-05-06 | 宁波方太厨具有限公司 | Fume exhaust fan |
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