CN204610983U - A kind of kitchen ventilator fire-closing valve - Google Patents
A kind of kitchen ventilator fire-closing valve Download PDFInfo
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- CN204610983U CN204610983U CN201520261291.XU CN201520261291U CN204610983U CN 204610983 U CN204610983 U CN 204610983U CN 201520261291 U CN201520261291 U CN 201520261291U CN 204610983 U CN204610983 U CN 204610983U
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Abstract
A kind of kitchen ventilator fire-closing valve, comprise the shell that inside is formed with oil smoke passage, oil smoke passage has the intake grill and exhaust outlet that are oppositely arranged, there is in oil smoke passage the radial installation shaft arranged and be located at the rotation valve block that installation shaft also can open and close intake grill, it is characterized in that: the first torsion spring and the second torsion spring are installed on the mounting shaft, first torsion spring acts on all the time and rotates valve block and intake grill had be tending towards the trend of closing, second torsion spring is provided with Fuse assembly, described second torsion spring only just acts on when Fuse assembly fuses and rotates valve block and make intake grill be tending towards closing.The utility model has the advantage of: this kitchen ventilator fire-closing valve is provided with the first torsion spring and the second torsion spring in the installation shaft of oil smoke channel interior, when Fuse assembly fuses, the active force superposition of the first torsion spring and the second torsion spring is enough to the pressure overcoming intake grill side, thus it is more reliable that intake grill is closed.
Description
Technical field
The utility model relates to a kind of fire-closing valve, especially relates to a kind of kitchen ventilator fire-closing valve.
Background technique
In the kitchen using longitudinally public gas flue, in order to prevent the oil smoke in gas flue from blowing back in kitchen, at the device be all provided with between the mouth of pipe and public gas flue as check valve for flue of giving vent to anger of range hood.Existing check valve for flue generally comprises the oil smoke passage be made up of shell, this oil smoke passage has relative intake grill and exhaust outlet, intake grill connects the mouth of pipe of giving vent to anger of range hood, exhaust outlet extend in public gas flue, at oil smoke passage exhaust outlet, place is provided with valve block able to turn on or off, and valve block is arranged on the inwall of oil smoke passage by horizontally disposed valve block axis of rotation.When not using kitchen ventilator, valve block due to self gravitation in the closed position, valve block covers at air-out oral area; When using kitchen ventilator, valve block is in an open position, and valve block is away from exhaust outlet.Due to many public public gas flues of longitudinal direction of user, once unshared housing's breaking out of fire, a large amount of high-temperature harmful gas pours in longitudinal public gas flue, if now close the valve block in check valve for flue not in time, these a large amount of high-temperature harmful gas can be entered in the user family using kitchen ventilator by the oil smoke passage of check valve for flue, thus threaten the life safety of resident family.
The various fire-proof valve structure with valve block is had in prior art, if the patent No. is " a kind of check fire valve for flue " disclosed in the Chinese invention patent application of ZL 200910017260.9 (Authorization Notice No. is CN 101608702A), this check fire valve for flue comprises the oil smoke passage be made up of shell, oil smoke passage has relative intake grill and exhaust outlet, valve block is provided with in oil smoke passage, valve block is the two panels be oppositely arranged, valve block is arranged in oil smoke passage by valve block rotating shaft is rotating, be provided with the block piece that two panels valve block can only be opened to exhaust outlet direction near intake grill one end in oil smoke passage, be provided with near intake grill side in oil smoke passage and intake grill is divided into the two-part connection strap longitudinally arranged, valve block rotating shaft is near connection strap, connection strap is provided with the high temperature shutoff device that can make valve block positive closing on the side of exhaust outlet.Although, this fire-closing valve is worked as flue-gas temperature in public gas flue and can be closed by force under being in the very high state of emergency, but its structure is comparatively complicated, the passage air-out area taken is comparatively large, and exhaust outlet local losses is comparatively large, and, when there is the state of emergency, valve block is reliable not enough to the closedown of intake grill, and in addition, the fuse link of its high temperature shutoff device changes also comparatively inconvenience.
Model utility content
First technical problem to be solved in the utility model is for above-mentioned prior art present situation, provides a kind of structure simple and at the lower kitchen ventilator fire-closing valve reliably closing intake grill that is in an emergency.
The utility model solves the problems of the technologies described above adopted technological scheme: this kitchen ventilator fire-closing valve, comprise the shell that inside is formed with oil smoke passage, described oil smoke passage has the intake grill and exhaust outlet that are oppositely arranged, there is in oil smoke passage the radial installation shaft arranged and be located at the rotation valve block that installation shaft also can open and close intake grill, it is characterized in that: the first torsion spring and the second torsion spring are installed in described installation shaft, described first torsion spring acts on all the time and rotates valve block and intake grill had be tending towards the trend of closing, described second torsion spring is provided with Fuse assembly, described second torsion spring only just acts on described rotation valve block and makes intake grill be tending towards closing when Fuse assembly fuses.
Fuse assembly can have multiple mounting structure, and preferably, the second described torsion spring has the first free end and the second free end, and described first free end and the second free end are linked together by described Fuse assembly.
Fuse assembly can have multiple different structure, preferably, described Fuse assembly comprise fusing block and to be positioned at below fusing block and with the fixed block that fixes of fusing block, the first described free end and the second free end extend to exhaust outlet side and parallel or roughly parallel, and the head of the first free end and the head of the second free end are connected between fusing block and fixed block.After adopting said structure, the air-out area that the second torsion spring and Fuse assembly take oil smoke passage is less, thus exhaust outlet local losses is reduced.
Further preferably, described fixed block is screw, and upward and be connected and fixed with fusing block, the head of described first free end offsets with fusing block the head of screw, and head and the screw afterbody of described second free end offset.Like this, screw is adopted to be fixed on the second torsion spring by fusing block, Fuse assembly linkage structure is simple, cost is low, convenient manual change fusing block, when after the fusing of fusing block, screw comes off naturally because of gravity, thus it is spacing to remove the first free end and the second free end, the second torsion spring starts action and makes intake grill be tending towards closing.
Further preferably, the first described free end and the second free end extend to exhaust outlet side and parallel or roughly parallel, and described Fuse assembly is the hot melt adhesive the first free end and the second free end are fixed together.Like this, after hotmelt melts, remove the binding force of the first free end and the second free end, the second torsion spring can be started working and be acted on rotation valve block.
In order to carry out spacing to the first free end before Fuse assembly fusing, the second free end, in described oil smoke passage, be also fixed with position-limited lever, the first described free end and the second free end lay respectively at the both sides of described position-limited lever.
Further preferably, described position-limited lever parallels with described installation shaft and closer to described exhaust outlet, and the two ends of position-limited lever are fixed on described shell.
Further preferably, the second described torsion spring is located at the centre of described installation shaft, and the first described torsion spring has two and is located at the both sides of the second torsion spring respectively.Like this, the distributed architecture of torsion spring is more reasonable, and torsion spring is more reasonable to the active force rotating valve block.
In order to ensure the sealing of exhaust outlet, the end face being positioned at exhaust outlet side at described shell is provided with sealing gasket.
Preferred as above-mentioned either a program, described installation shaft is rotating shaft, be provided with rotating shaft fixed support in the both sides of shell, the two ends of described rotating shaft are arranged on corresponding rotating shaft fixed support, and rotating shaft is arranged with the rotating shaft limited ring that restriction rotating shaft is done to move axially.
As another preferred version, described installation shaft is stationary axle, and the two ends of stationary axle are fixed on shell.
Compared with prior art, the utility model has the advantage of: this kitchen ventilator fire-closing valve is provided with the first torsion spring and the second torsion spring in the installation shaft of oil smoke channel interior, first torsion spring acts on all the time and rotates valve block and intake grill had be tending towards the trend of closing, second torsion spring only just acts on when Fuse assembly fuses and rotates valve block and make intake grill be tending towards closing, like this, when Fuse assembly fuses, the active force superposition of the first torsion spring and the second torsion spring is enough to the pressure overcoming intake grill side, thus it is more reliable that intake grill is closed.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment under kitchen ventilator closed condition;
Fig. 2 is the structural representation of the utility model embodiment under kitchen ventilator normal operating condition;
Fig. 3 is the structural representation of the utility model embodiment another angle under kitchen ventilator normal operating condition;
Fig. 4 is the structural representation of the utility model embodiment under fusing block blown state.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
As shown in Figures 1 to 4, the kitchen ventilator fire-closing valve in the present embodiment comprises by shell 1, rotating shaft 3, rotates the assembly such as valve block 4, first torsion spring 5, second torsion spring 6, fusing block 71, screw 72, position-limited lever 8, sealing gasket 9, rotating shaft fixed support 10 and rotating shaft limited ring 11.
Wherein, shell 1 inside forms oil smoke passage, and oil smoke passage has the intake grill 21 and exhaust outlet 22 that are oppositely arranged.Rotating shaft fixed support 10 is arranged on the both sides of shell 1, and rotating shaft 3 is arranged in oil smoke channel interior radial direction, and the two ends of rotating shaft 3 are arranged on corresponding rotating shaft fixed support 10, and rotating shaft limited ring 11 is set in rotating shaft 3, and is used for restriction rotating shaft 3 and produces and move axially.Rotation valve block 4 is arranged in rotating shaft 3 and also can 3 rotates around the shaft, rotates valve block 4 and has two panels and split setting, correspondingly can open or close intake grill 21 by the opening and closing of rotating valve block 4.In order to ensure the sealing of oil smoke passage at exhaust outlet 22 place, the end face being positioned at exhaust outlet 22 side at shell 1 is provided with sealing gasket 9.
First torsion spring 5 and the second torsion spring 6 are installed in rotating shaft 3, and the first torsion spring 5 has two and is arranged on the both sides of rotating shaft 3 respectively, and the first torsion spring 5 acts on all the time and rotates valve block 4 and intake grill 21 had be tending towards the trend of closing.Second torsion spring 6 is arranged on the middle part of rotating shaft 3, and the second torsion spring 6 has the first free end 61 of extending to exhaust outlet 22 side and the second free end 62, first free end 61 and the second free end 62 are linked together by Fuse assembly.Position-limited lever 8 is fixed in oil smoke passage and the two ends of position-limited lever 8 are fixed on shell 1, position-limited lever 8 parallels with rotating shaft 3 and compared to rotating shaft closer to exhaust outlet 22, first free end 61 and the second free end 62 lay respectively at the both sides of position-limited lever 8, and the effect of position-limited lever 8 is in order to avoid the first free end 61, second free end 62 and Fuse assembly produce mobile when the block 71 that fuses does not fuse.
In the present embodiment, Fuse assembly comprises fusing block 71 and to be positioned at below fusing block and the screw 72 fixed with fusing block, the head of screw 72 upward and with fusing block 71 be connected and fixed, the head of the first free end 61 offsets with fusing block 71, head and screw 72 afterbody of the second free end 62 offset, like this, the head of the first free end 61 and the head of the second free end 62 are just linked together by fusing block 71 and screw 72.In emergency circumstances too high in the non-occurrence temperature of public gas flue, first free end 61 of the second torsion spring 6 parallels or roughly parallels with the second free end 62 and be limited in and fuses between block 71 and screw 72, thus to take the air-out area of oil smoke passage less for the second torsion spring 6, fusing block 71 and screw 72, thus exhaust outlet local losses is reduced, and, Fuse assembly connects simple, and cost is low, convenient manual replacing fusing block.After fusing block 71 fuses, screw 72 comes off naturally because of gravity, thus it is spacing to remove the first free end 61 and the second free end 62, and then the second torsion spring 6 starts to act on and rotates valve block 4 and make intake grill be tending towards closing.Certainly, also directly the first free end and the second free end can be fixed together by hot melt adhesive, when flue temperature reaches setting value, hotmelt melts and the constraint removed the first free end and the second free end.Also curie temperature can be adopted to be that the first free end and the second free end hold by the magnetic material of about 150 DEG C, demagnetization when flue temperature reaches 150 DEG C time, and then remove the constraint to the first free end and the second free end.
Under kitchen ventilator closed condition, the first torsion spring 5 acts on and rotates valve block 4 and close intake grill 21, and now, the second torsion spring 6 is locked with fusing block 71 by screw 72.After kitchen ventilator is opened, the blow of intake grill 21 is rotated valve block 4 and is overcome the first torsion spring 5 to the active force rotating valve block 4, intake grill 21 is opened, now, second torsion spring 6 is still locked with fusing block 71 by screw 72, and the space that flue gas is opened by both sides rotation valve block 4 is passed through smoothly; After the temperature in flue reaches uniform temperature (international regulations is 150 DEG C), fusing block 71 fuses, screw 72 and fusing block 71 get loose, second torsion spring 6 flicks, and now, the second torsion spring 6 and the first torsion spring 5 jointly compressing rotate valve block 4 and positive closing intake grill 21, play the effect of isolated fire, and under the acting in conjunction of the first button spring 5 and the second torsion spring 6, closing operation is more reliable.
The foregoing is only preferred implementation of the present utility model; should be understood that; for those of ordinary skills; do not departing under principle prerequisite of the present utility model; multiple remodeling or improvement can be carried out to the utility model; such as installation shaft also can adopt stationary axle, and these are all regarded as within protection domain of the present utility model.
Claims (10)
1. a kitchen ventilator fire-closing valve, comprise the shell (1) that inside is formed with oil smoke passage, described oil smoke passage has the intake grill (21) and exhaust outlet (22) that are oppositely arranged, there is in oil smoke passage the radial installation shaft arranged and be located at the rotation valve block (4) that installation shaft also can open and close intake grill, it is characterized in that: the first torsion spring (5) and the second torsion spring (6) are installed in described installation shaft, described first torsion spring (5) acts on all the time to be rotated valve block (4) and intake grill (21) is had be tending towards the trend of closing, described second torsion spring (6) is provided with Fuse assembly, described second torsion spring (6) only just acts on described rotation valve block (4) and makes intake grill (21) be tending towards closing when Fuse assembly fuses.
2. kitchen ventilator fire-closing valve according to claim 1, it is characterized in that: described the second torsion spring (6) has the first free end (61) and the second free end (62), described first free end (61) and the second free end (62) are linked together by described Fuse assembly.
3. kitchen ventilator fire-closing valve according to claim 2, it is characterized in that: described Fuse assembly comprise fusing block (71) and to be positioned at below fusing block and with the fixed block that fixes of block that fuses, described the first free end (61) and the second free end (62) extend to exhaust outlet side and parallel or roughly parallel, and the head of the first free end (61) and the head (62) of the second free end are connected between fusing block (71) and fixed block.
4. kitchen ventilator fire-closing valve according to claim 3, it is characterized in that: described fixed block is screw (72), the head of screw (72) upward and with fusing block (71) be connected and fixed, the head of described first free end (61) offsets with fusing block (71), and head and screw (72) afterbody of described second free end (62) offset.
5. kitchen ventilator fire-closing valve according to claim 2, it is characterized in that: described the first free end (61) and the second free end (62) extend to exhaust outlet side and parallel or roughly parallel, and described Fuse assembly is the hot melt adhesive the first free end and the second free end are fixed together.
6. kitchen ventilator fire-closing valve according to claim 2, it is characterized in that: in described oil smoke passage, be also fixed with position-limited lever (8), described the first free end (61) and the second free end (62) lay respectively at the both sides of described position-limited lever (8).
7. kitchen ventilator fire-closing valve according to claim 6, it is characterized in that: described position-limited lever (8) parallels with described installation shaft and closer to described exhaust outlet (22), and the two ends of position-limited lever (8) are fixed on described shell (1).
8. kitchen ventilator fire-closing valve according to claim 1, it is characterized in that: described the second torsion spring (6) is located at the centre of described installation shaft, described the first torsion spring (5) has two and is located at the both sides of the second torsion spring (6) respectively.
9. the kitchen ventilator fire-closing valve according to claim arbitrary in claim 1 to 8, it is characterized in that: described installation shaft is rotating shaft (3), in the both sides of shell (1), rotating shaft fixed support (10) is installed, the two ends of described rotating shaft (3) are arranged on corresponding rotating shaft fixed support (10), and rotating shaft (3) is arranged with the rotating shaft limited ring (11) that restriction rotating shaft is done to move axially.
10. the kitchen ventilator fire-closing valve according to claim arbitrary in claim 1 to 8, is characterized in that: described installation shaft is stationary axle, and the two ends of stationary axle are fixed on shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520261291.XU CN204610983U (en) | 2015-04-27 | 2015-04-27 | A kind of kitchen ventilator fire-closing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520261291.XU CN204610983U (en) | 2015-04-27 | 2015-04-27 | A kind of kitchen ventilator fire-closing valve |
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| Publication Number | Publication Date |
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| CN204610983U true CN204610983U (en) | 2015-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520261291.XU Active CN204610983U (en) | 2015-04-27 | 2015-04-27 | A kind of kitchen ventilator fire-closing valve |
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Cited By (5)
| 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 |
| CN105570519A (en) * | 2016-01-28 | 2016-05-11 | 顾钰锋 | Magnetic check 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 |
| CN109681680A (en) * | 2017-10-18 | 2019-04-26 | 宁波方太厨具有限公司 | A kind of monolithic valve fireproof check valve for flue |
| CN111457151A (en) * | 2019-01-22 | 2020-07-28 | 上海汽车集团股份有限公司 | Relief valve and battery package |
-
2015
- 2015-04-27 CN CN201520261291.XU patent/CN204610983U/en active Active
Cited By (5)
| 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 |
| CN105570519A (en) * | 2016-01-28 | 2016-05-11 | 顾钰锋 | Magnetic check 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 |
| CN109681680A (en) * | 2017-10-18 | 2019-04-26 | 宁波方太厨具有限公司 | A kind of monolithic valve fireproof check valve for flue |
| CN111457151A (en) * | 2019-01-22 | 2020-07-28 | 上海汽车集团股份有限公司 | Relief valve and battery package |
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