CN203453554U - Fireproof check valve of exhaust pipe opening of range hood - Google Patents
Fireproof check valve of exhaust pipe opening of range hood Download PDFInfo
- Publication number
- CN203453554U CN203453554U CN201320541411.2U CN201320541411U CN203453554U CN 203453554 U CN203453554 U CN 203453554U CN 201320541411 U CN201320541411 U CN 201320541411U CN 203453554 U CN203453554 U CN 203453554U
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- valve body
- range hood
- check valve
- exhaust pipe
- butterfly
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Abstract
The utility model relates to a fireproof check valve of an exhaust pipe opening of a range hood. The fireproof check valve of the exhaust pipe opening of the range hood comprises a cylindrical valve body, two semilunar butterfly pieces, two rotary shafts and an opening and closing line for sealing and further comprises security pressing plates, a warning mark and a fusible buckle, wherein the two semilunar butterfly pieces, the two rotary shafts and the opening and closing line for sealing are arranged in the cylindrical valve body, the surfaces of the butterfly pieces are coated with oleophobic paint, the rotary shafts are used for fixing the butterfly pieces, and the opening and closing line for sealing is arranged on the inner wall of the valve body. The butterfly pieces are connected with the rotary shafts, and linkage gears meshed with each other are arranged at the top ends of the rotary shafts. The edges of the butterfly pieces make contact with the opening and closing line for sealing. The security pressing plates connected with two torsion springs are symmetrically arranged on the left and the right of the rotary shaft above an inner cavity of the valve body, the security pressing plates are connected and fixed through the fusible buckle at ordinary times, the fusible buckle melts and fractures at high temperature, and the security pressing plates unfold left and right under the action of torsion of the springs to be pressed to the back faces of the butterfly pieces in a buckled mode so as to close the valve. The warning mark is further arranged in a through hole of the valve body. When the fireproof check valve works, the butterfly pieces are in an open state. When the range hood stops working, the butterfly pieces make tight contact with the opening and closing line for sealing to be in a closed state, outside oil fume or flame cannot enter, and thus the fireproof check valve has the dual functions of returning stopping and fireproofness.
Description
Technical field
The utility model relates to the field of accessories supporting with kitchen fitting, specifically refers to the fire-preventing check valve of cooking-fume exhauster comb mouth.
Background technique
Gas cooker, disinfection cabinet and range hood are described as Modern Family kitchen " three-major-items ".And range hood is to remain indoor without greasy dirt, avoid kitchen to suck oil smoke, ensure healthy indispensable visual plant.The Modern Residence of China is mostly multilayer, high level or little high level at present, and each unit building has designed common flue in the same corner in each layer of kitchen conventionally, and the exhaust pipe for range hood exhaust outlet in each household kitchen all accesses in the common flue of a straight-through attic.This has obviously saved each layer of kitchen and has independently built chimney and take house architectural area, but the oil smoke of discharging because of other kitchen of each household all enters easily generation mutual " taint of odour " of common flue, " frying capsicum ,Quan building for one sneezes " phenomenon that people play a joke.If just in case there is the breaking out of fire of Na Jia kitchen, flame just likely enters other each family and causes larger disaster from common flue.State ministry of public security has been formulated industry standards of public safety GA/T798-2008:< < oil-smoke-exhausting fireproof check valve > > for this reason, this standard code the exhaust outlet of exhaust pipe for range hood is installed to a fire-preventing check valve at the exhaust port that is passing into common flue.But make a general survey of existing range hood in the market, when dispatching from the factory, all only at cabinet exhaust outlet, two non-return video discs and one section of exhaust duct are set, at exhaust duct outlet end, do not enter a fire-preventing check valve of exhaust port outfit of common flue.So the research and development of this product success will be to range hood safety problem significant contribution.
Summary of the invention
The utility model object is for existing various exhaust pipe for range hood mouths, to install one not only to prevent fires but also can prevent the unidirectional butterfly valve that other resident family's oil smoke are refunded, to keep and to safeguard kitchen cleaning and prevent that fire from stretching.
The technological scheme of the utility model technical solution problem is: a kind of fire-preventing check valve of exhaust pipe for range hood mouth, comprise cylindric valve body, two semilune butterfly sheets that arrange in valve body, article two, the fixedly rotating shaft of butterfly sheet and be located at the sealing open-close line on valve interior wall circumference, also comprise insurance pressing plate, meltable button and warning mark, described butterfly sheet is connected with rotating shaft, the upper and lower top of described rotating shaft becomes to be flexibly connected with the support that is located at the upper and lower inwall of valve body respectively, in two rotating shaft lower ends, be provided with intermeshing linkage gear, the circle arranging on the arc edge of described butterfly sheet and valve interior wall opens and closes line contact sealing and (sees Fig. 1, Fig. 4).
Described valve body outside is connected with foursquare mounting flange, valve diameter matches with the exhaust duct bore of range hood, in order to match mutually from the exhaust pipe for range hood of different bores, the general adapter (seeing Fig. 1) of a turriform is also set up in valve body inner side.
The outer side surface of described butterfly sheet is arranged with two insurance pressing plates, described insurance pressing plate upper end be located at the point articulated of valve body top inner wall, insurance pressing plate upper side is provided with torque spring, edge, described insurance pressing plate middle part is provided with aperture, by meltable linking, connect two apertures and fix and close up in shaft parallel position at ordinary times, meltable button fusing fracture while meeting high temperature, withhold at the butterfly sheet back side after opening insurance pressing plate left and right under torque spring twisting force, makes valve in closed condition (seeing Fig. 3).
Described rotating shaft and valve body central axis are to valve body lateral direction tilt alpha angle (seeing Fig. 1), and the plane included angle after two butterfly sheets open is β, make butterfly sheet can not become all the time Natural closure state (seeing Fig. 3) when not using at ordinary times.
Described meltable button is made by low-melting alloy, snaps onto in the aperture of two insurance platen edge (seeing Fig. 1, Fig. 2).
Described butterfly sheet surface is coated with oily dirt free, high temperature sealing material.
Described warning mark is arranged in the through hole on described valve body top, its one end is outside valve body, the other end and the insurance pressing plate snapping that is located at body cavity top, when insurance pressing plate is opened by thermal destruction to the left and right because of meltable button, warning mark takeoffs and stretches out through hole, reminds user to note changing meltable button (seeing Fig. 1).
Described open-close line and butterfly sheet contacting point have V font wedge angle, and object is the area of contact of as far as possible dwindling open-close line and butterfly sheet, prevent that butterfly sheet from being clung by greasy filth and imitatively hinder keying (seeing Fig. 5).
The utility model is useful: when the outside air draft of fan starting of range hood, two butterfly sheets, under linkage gear effect, are blown open and in opening state simultaneously.When fume exhaust fan blower stops, two butterfly sheets are under self inclined gravity effect, and butterfly sheet edge and Open-close sealing line close contact, in closed condition.If while having extraneous oil smoke or flame to enter, butterfly sheet edge contacts tightr with Open-close sealing line, stops that extraneous flue gas enters.When the meltable button that the high-temperature flue gas coming when the external world is done low melting metal blows, insurance pressing plate opens, and under torque spring effect, butterfly sheet is pressed to open-close line close port, thereby plays non-return and frpf dual functions.Because butterfly sheet edge only contacts a little with open-close line, butterfly sheet can be because being clung by large size greasy filth for a long time, so no matter when use range hood butterfly sheet easily can be blown open.
Accompanying drawing explanation
Fig. 1 is the utility model side complete section schematic diagram;
Fig. 2 is the utility model rear side schematic perspective view;
Fig. 3 is the utility model butterfly sheet opening and closing schematic diagram;
Fig. 4 is the utility model rotating shaft and the linkage gear schematic diagram that intermeshes;
Fig. 5 is the utility model butterfly sheet edge and Open-close sealing line close contact schematic diagram;
Each title and numbering in figure: 1-valve body, 2-insurance pressing plate, 3-torque spring, 4-warning mark, 5-butterfly sheet, the general adapter of 6-, 7-be meltable to be buckled, 8-mounting flange, 9-open-close line, 10-linkage gear, 11-rotating shaft.
Embodiment
As shown in Figure 1 to Figure 3: the utility model is a kind of fire-preventing check valve door for exhaust pipe for range hood mouth, and its keying form is with two butterfly-like valve blocks, therefore be called again non-return butterfly valve.It comprises cylindric valve body 1, two semilune butterfly sheets 5 of valve body 1 interior setting, two fixedly butterfly sheet 5 rotating shaft 11 and be located at the open-close line 9 for sealing on valve body 1 inwall circumference, also comprise insurance pressing plate 2, meltable button 7 and warning mark 4.Butterfly sheet 5 is connected with rotating shaft 11, rotating shaft becomes to be flexibly connected with the support that is located at valve body inwall Shang Xia 1 respectively in top Shang Xia 11, in two rotating shaft 11 lower ends, be provided with intermeshing linkage gear 10, the arc edge of butterfly sheet 5 contacts sealing (seeing Fig. 1, Fig. 4) with the circle open-close line 9 arranging on valve body 1 inwall.Valve body 1 outside is connected with foursquare mounting flange 8, valve body 1 diameter matches with the exhaust duct bore of range hood, in order to match mutually from the exhaust pipe for range hood of different bores, the general adapter 6 (seeing Fig. 1) of a turriform is also set up in valve body 1 inner side.The outer side surface of butterfly sheet 5 is arranged with two insurance pressing plates 2, insure pressing plate 2 upper ends and be located at propping up of valve body 1 top inner wall point articulated, insurance pressing plate 2 upper side are provided with torque spring 3, insurance pressing plate 2 edges, middle part are provided with aperture, by meltable button 7, connecting two apertures at ordinary times fixes and closes up in rotating shaft 11 parallel positions, meltable button 7 fusing fractures while meeting high temperature, withhold at butterfly sheet 5 back sides after opening insurance pressing plate 2 left and right under torque spring 3 twisting forces, makes valve in closed condition (seeing Fig. 3).Rotating shaft 11 is with valve body 1 central axis to valve body 1 lateral direction tilt alpha angle (seeing Fig. 1), and the plane included angle after two butterfly sheets 5 open is β, makes butterfly sheet 5 can not become all the time Natural closure state (seeing Fig. 3) when not using at ordinary times.Meltable button 7 is made by low-melting alloy, snaps onto in the aperture at two insurance pressing plate 2 edges (seeing Fig. 1, Fig. 2).Butterfly sheet 5 surfaces are coated with oily dirt free, high temperature sealing material.Warning mark 4 is arranged in the through hole on described valve body 1 top, its one end is outside valve body 1, the other end and insurance pressing plate 2 snappings that are located at valve body 1 inner chamber top, when insurance pressing plate 2 is opened by thermal destruction to the left and right because of meltable button 7, warning mark 4 takeoffs and stretches out through hole, reminds user to note changing meltable button 7 (seeing Fig. 1).Open-close line 9 has V font wedge angle with butterfly sheet 5 contacting points, and object is the area of contact of as far as possible dwindling open-close line 9 and butterfly sheet 5, prevents that butterfly sheet 5 from being clung by greasy filth and imitatively hinders keying (seeing Fig. 5).
To the utility model service condition, divide two states to be described below:
Inverse-stopping functions: when fume exhaust fan blower does not start, butterfly sheet 5 is in natural closed condition, and its arc edge contacts sealing from exhaust outlet outside with open- close line 9, and 5 of butterfly sheets become some contact at the V of open-close line 9 font wedge angle, even if there is greasy dirt to be bonded on butterfly sheet 5 or open-close line 9, its bonding strength can be very not high yet, and when fume exhaust fan blower startup work, the wind that blower fan blows out promotes butterfly sheet, by linkage gear 10, two butterfly sheets 5 open simultaneously, just can be by valve opens in moment, and outwards air draft.But while having flue gas to enter, because butterfly sheet 5 back sides are pushed down by extraneous flue gas, add the gravity that butterfly sheet 5 naturally droops itself in common flue, exhaust outlet is sternly covered.So extraneous blast is larger, the pressure that butterfly sheet 5 presses to open-close line 9 is larger, and valve port is also just tight by Feng get Yue.If now start fume exhaust fan blower, because the blast of blower fan is larger, be also enough to the oil smoke of the machine and extraneous oil smoke to blow away together.
Fire-proof function: if just in case during the kitchen breaking out of fire of other floors, flame enters common flue, the meltable button 7 fusing fractures of low melting metal being done over the flue gas of setting temperature, meltable button 7 loses and is connected with insurance pressing plate 2, insurance pressing plate 2 is under the effect of torque spring 3 torsion, butterfly sheet 5 is pressed to open-close line 9, valve port is sealed.Because butterfly sheet 5 and valve body 1 are all that resistant to elevated temperatures metallic material is made, so can not burnt out by flame, flame or high-temperature flue gas can be blocked in to valve port outside completely, thereby play frpf effect.
In addition, if even at ordinary times, have high-temperature flue gas that meltable button 7 is blown, can automatically upspring with the warning mark 4 of insurance pressing plate 2 snappings, user just can see from the outside, reminds user to note changing meltable button 7, and in time by its reset.
Claims (8)
1. the fire-preventing check valve of an exhaust pipe for range hood mouth, comprise cylindric valve body (1), the two semilune butterfly sheets (5) that arrange in valve body (1), article two, the fixedly rotating shaft (11) of butterfly sheet (5) and be located at the open-close line for sealing (9) on valve body (1) inwall circumference, also comprise insurance pressing plate (2), meltable button (7) and warning mark (4), it is characterized in that described butterfly sheet (5) is connected with rotating shaft (11), the upper and lower top of described rotating shaft (11) survives and is dynamically connected with the upper and lower interior wall bracket of valve body (1) respectively, in two rotating shafts (11) lower end, be provided with intermeshing linkage gear (10), the arc edge of described butterfly sheet (5) contacts sealing with the circle open-close line (9) arranging on valve body (1) inwall.
2. the fire-preventing check valve of exhaust pipe for range hood mouth according to claim 1, the central axis that it is characterized in that described rotating shaft (11) and valve body (1) becomes inclined angle alpha to the lateral direction of valve body (1), and the plane included angle after two butterfly sheets (5) open is β.
3. the fire-preventing check valve of exhaust pipe for range hood mouth according to claim 1, it is characterized in that described valve body (1) outside is connected with foursquare mounting flange (8), valve body (1) diameter matches with the exhaust duct of range hood, and valve body (1) inner side is also provided with the general adapter of turriform (6) that an energy mates from different bore exhaust ducts.
4. the fire-preventing check valve of exhaust pipe for range hood mouth according to claim 1, it is characterized in that being arranged with two insurance pressing plates (2) at the outer side surface of described butterfly sheet (5), described insurance pressing plate (2) upper end be located at the point articulated of valve body (1) top inner wall, insurance pressing plate (2) upper side is provided with torque spring (3), described insurance pressing plate (2) middle part is provided with aperture, by meltable button (7), connecting two apertures at ordinary times fixes and closes up in rotating shaft (11) parallel position, meltable button (7) fusing fracture while meeting high temperature, withhold at butterfly sheet (5) back side after opening insurance pressing plate (2) left and right under the twisting force of torque spring (3).
5. the fire-preventing check valve of exhaust pipe for range hood mouth according to claim 1, is characterized in that described meltable button (7) made by low-melting alloy, snaps onto in the aperture at two insurance pressing plate (2) edges.
6. the fire-preventing check valve of exhaust pipe for range hood mouth according to claim 1, is characterized in that described butterfly sheet (5) surface is coated with oily dirt free, high temperature sealing material.
7. the fire-preventing check valve of exhaust pipe for range hood mouth according to claim 1, it is characterized in that described warning mark (4) is arranged in the through hole on described valve body (1) top, its one end outside valve body (1), the other end and insurance pressing plate (2) snapping that is located at valve body (1) inner chamber top.
8. the fire-preventing check valve of exhaust pipe for range hood mouth according to claim 1, is characterized in that described open-close line (9) and butterfly sheet (5) contacting point have V font wedge angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320541411.2U CN203453554U (en) | 2013-08-29 | 2013-08-29 | Fireproof check valve of exhaust pipe opening of range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320541411.2U CN203453554U (en) | 2013-08-29 | 2013-08-29 | Fireproof check valve of exhaust pipe opening of range hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203453554U true CN203453554U (en) | 2014-02-26 |
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ID=50133430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320541411.2U Expired - Fee Related CN203453554U (en) | 2013-08-29 | 2013-08-29 | Fireproof check valve of exhaust pipe opening of range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203453554U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819324A (en) * | 2015-04-27 | 2015-08-05 | 宁波方太厨具有限公司 | Range hood fire valve |
| CN106439118A (en) * | 2016-08-09 | 2017-02-22 | 杭州小米环境科技有限公司 | Fire-prevention check valve |
| CN109751641A (en) * | 2017-11-02 | 2019-05-14 | 江门市印星实业有限公司 | A kind of kitchen ventilator of oil smoke outer circulation |
| CN109990120A (en) * | 2017-12-29 | 2019-07-09 | 宁波方太厨具有限公司 | A kind of double valve sheet fireproof check valve for flue |
| CN109990330A (en) * | 2017-12-29 | 2019-07-09 | 青岛海尔智慧厨房电器有限公司 | Smoke machine control method of integrated cooker and integrated cooker |
| CN110131449A (en) * | 2019-06-12 | 2019-08-16 | 南京协威机械有限公司 | Fire-preventing check valve and its double opening and closings bride visits her parents with her husband for the first time after the wedding plate |
| CN113944948A (en) * | 2021-11-04 | 2022-01-18 | 浙江奥田电器股份有限公司 | Take integrated kitchen of environmental protection of flue safety protection function |
-
2013
- 2013-08-29 CN CN201320541411.2U patent/CN203453554U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819324A (en) * | 2015-04-27 | 2015-08-05 | 宁波方太厨具有限公司 | Range hood fire valve |
| CN106439118A (en) * | 2016-08-09 | 2017-02-22 | 杭州小米环境科技有限公司 | Fire-prevention check valve |
| CN109751641A (en) * | 2017-11-02 | 2019-05-14 | 江门市印星实业有限公司 | A kind of kitchen ventilator of oil smoke outer circulation |
| CN109990120A (en) * | 2017-12-29 | 2019-07-09 | 宁波方太厨具有限公司 | A kind of double valve sheet fireproof check valve for flue |
| CN109990330A (en) * | 2017-12-29 | 2019-07-09 | 青岛海尔智慧厨房电器有限公司 | Smoke machine control method of integrated cooker and integrated cooker |
| CN109990330B (en) * | 2017-12-29 | 2020-12-01 | 青岛海尔智慧厨房电器有限公司 | Smoke machine control method of integrated cooker and integrated cooker |
| CN109990120B (en) * | 2017-12-29 | 2024-01-16 | 宁波方太厨具有限公司 | Double-valve-plate flue fireproof check valve |
| CN110131449A (en) * | 2019-06-12 | 2019-08-16 | 南京协威机械有限公司 | Fire-preventing check valve and its double opening and closings bride visits her parents with her husband for the first time after the wedding plate |
| CN113944948A (en) * | 2021-11-04 | 2022-01-18 | 浙江奥田电器股份有限公司 | Take integrated kitchen of environmental protection of flue safety protection function |
| CN113944948B (en) * | 2021-11-04 | 2024-07-16 | 浙江奥田电器股份有限公司 | Environment-friendly integrated kitchen range with flue safety protection function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140226 Termination date: 20140829 |
|
| EXPY | Termination of patent right or utility model |