CN216448401U - Gas protection device and gas water heater - Google Patents
Gas protection device and gas water heater Download PDFInfo
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- CN216448401U CN216448401U CN202122577673.1U CN202122577673U CN216448401U CN 216448401 U CN216448401 U CN 216448401U CN 202122577673 U CN202122577673 U CN 202122577673U CN 216448401 U CN216448401 U CN 216448401U
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- gas
- protection device
- memory metal
- sliding block
- sealing mechanism
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Abstract
The utility model discloses a gas protection device and a gas water heater, wherein the gas protection device comprises: the gas inlet, the inner cavity and the gas outlet form a gas channel; the movable sealing mechanism is positioned in the inner cavity and connected with the shell; the memory metal part is connected with the movable sealing mechanism and can deform according to temperature change to drive the movable sealing mechanism to plug the gas channel. When the airflow flows backwards, high-temperature gas generated by combustion of the gas flows back, so that the memory metal piece in the shell is heated to deform, the memory metal piece drives the movable sealing mechanism to plug the gas channel, the gas supply is cut off, the combustion of the gas is stopped, and accidents are avoided. Therefore, the effect of automatically cutting off the gas supply can be realized without depending on an electric control mode when the airflow flows backwards, and the reliability is favorably improved.
Description
Technical Field
The utility model relates to the field of gas water heaters, in particular to a gas protection device and a gas water heater.
Background
The gas water heater is a common gas device for families, and is provided with a smoke exhaust pipe communicated with the outside so as to exhaust smoke generated after gas combustion to the outside, thereby ensuring the use safety. However, in windy weather, the airflow may flow backward from the smoke exhaust pipe, so that flame overflow affects other devices, and even accidents such as burning out a water heater and causing electric leakage occur.
Among the prior art, part gas heater is provided with the wind pressure sensor to through detecting the wind pressure size to when the wind pressure is too big, take place the air current promptly and flow backward the time control solenoid valve cuts off the gas supply, stop the gas burning, and then avoid the occurence of failure. However, the wind pressure sensor is adopted to control the electromagnetic valve, which belongs to an electric control mode, electric energy is consumed, and electric control faults exist, so that the reliability is insufficient.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a gas protection device which can automatically cut off gas supply under the condition of airflow backflow without depending on electric control.
The utility model also provides a gas water heater which can automatically cut off gas supply under the condition of airflow backflow without depending on electric control.
According to the embodiment of the first aspect of the utility model, the gas protection device comprises: the gas inlet, the inner cavity and the gas outlet form a gas channel; a movable sealing mechanism located in the inner cavity and connected with the housing; the memory metal part is connected with the movable sealing mechanism and can deform according to temperature change so as to drive the movable sealing mechanism to plug the gas channel.
The gas protection device provided by the embodiment of the utility model at least has the following beneficial effects: the air inlet on the casing can communicate with gas heater's intake pipe, gas outlet on the casing can communicate with gas heater's combustor, the gas is through the intake pipe, the gas passageway gets into the combustor and burns, when normal work, the high-temperature gas that the gas burning produced rises through discharging, when the condition that takes place the air current and flow backward, the high-temperature gas backward flow that the gas burning produced, make the memory metalwork in the casing be heated and produce deformation, and then the memory metalwork orders about movable sealing mechanism shutoff gas passageway, cut off the gas supply, make the gas stop burning, avoid the occurence of failure. Therefore, the effect of automatically cutting off the gas supply can be realized without depending on an electric control mode when the airflow flows backwards, and the reliability is favorably improved.
According to some embodiments of the present invention, the movable sealing mechanism includes a supporting seat, a slider and a matching seat, which are all located in the inner cavity, the supporting seat and the matching seat are respectively connected to the housing, the supporting seat is provided with a first vent hole, the matching seat is provided with a second vent hole, one end of the memory metal part is connected to the supporting seat, the other end of the memory metal part is connected to the slider, and the memory metal part deforms to drive the slider to block the second vent hole.
According to some embodiments of the present invention, a wall surface of the housing forming the inner cavity is provided with a first positioning portion and a second positioning portion, the first positioning portion can abut against the supporting seat, and the second positioning portion can abut against the matching seat.
According to some embodiments of the utility model, a first guiding structure is arranged between the sliding block and the matching seat, and the first guiding structure is used for limiting the moving direction of the sliding block.
According to some embodiments of the utility model, the first guiding structure comprises a guiding post arranged on the sliding block and a guiding hole arranged on the matching seat, and the guiding post is arranged in the guiding hole in a penetrating way.
According to some embodiments of the utility model, a sealing ring is provided between the slider and the mating seat.
According to some embodiments of the utility model, the memory metal piece is a memory spring.
According to some embodiments of the utility model, the support seat is provided with a second guiding structure for limiting the deflection of the memory spring.
According to some embodiments of the utility model, the second guiding structure comprises a protruding portion disposed on the supporting seat, the protruding portion is inserted into the memory spring, and a set of air holes communicated with the first air hole is disposed on the protruding portion.
According to the embodiment of the second aspect of the utility model, the gas water heater comprises a machine body and the gas protection device, wherein the machine body is provided with an air inlet pipe and a burner, and the shell is respectively connected with the air inlet pipe and the burner.
The gas water heater provided by the embodiment of the utility model at least has the following beneficial effects: the casing is connected with intake pipe and combustor respectively to make the gas of intake pipe can carry to the combustor through the gas passageway and burn. When the airflow flows backwards, high-temperature gas generated by combustion of the combustor flows back, so that the memory metal part is heated to deform, the memory metal part drives the movable sealing mechanism to plug the gas channel, gas supply is cut off, gas is stopped to combust, and wall accidents occur. Therefore, the effect of automatically cutting off the gas supply can be realized without depending on an electric control mode when the airflow flows backwards, and the reliability is favorably improved.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is an exploded perspective view of one embodiment of the gas protection device of the present invention;
FIG. 2 is a cross-sectional view of a first state of one embodiment of the gas protection device of the present invention;
FIG. 3 is a cross-sectional view of a second embodiment of the gas protection device of the present invention;
FIG. 4 is a schematic view of one embodiment of the gas water heater of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, if there are first and second described only for the purpose of distinguishing technical features, it is not understood that relative importance is indicated or implied or that the number of indicated technical features or the precedence of the indicated technical features is implicitly indicated or implied.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
As shown in fig. 1 to 4, a gas protection device according to an embodiment of the present invention includes: the gas burner comprises a shell 100, wherein the shell 100 is provided with an inner cavity 110, and a gas inlet 120 and a gas outlet 130 which are communicated with the inner cavity 110, and the gas inlet 120, the inner cavity 110 and the gas outlet 130 form a gas channel; a movable sealing mechanism 200 located in the inner cavity 110 and connected with the housing 100; the memory metal part 300 is connected with the movable sealing mechanism 200, and the memory metal part 300 can deform according to temperature change so as to drive the movable sealing mechanism 200 to seal the gas channel.
The air inlet 120 on the shell 100 can be communicated with the air inlet pipe 710 of the gas water heater, the air outlet 130 on the shell 100 can be communicated with the burner 720 of the gas water heater, the gas enters the burner 720 through the air inlet pipe 710 and the gas channel to be burnt, during normal work, high-temperature gas generated by gas burning rises and is discharged, when the condition of airflow backflow occurs, the high-temperature gas generated by gas burning flows back, so that the memory metal piece 300 in the shell 100 is heated to generate deformation, and then the memory metal piece 300 drives the movable sealing mechanism 200 to plug the gas channel, so that the gas supply is cut off, the gas stops burning, and accidents are avoided. Therefore, the effect of automatically cutting off the gas supply can be realized without depending on an electric control mode when the airflow flows backwards, and the reliability is favorably improved.
The memory metal has the characteristic that after plastic deformation occurs in a certain temperature range, the memory metal can recover the original shape in another temperature range, and accordingly, the memory metal piece 300 recovers the original shape after being heated, namely, the memory metal piece generates deformation to drive the movable sealing mechanism 200 to act.
Referring to fig. 1 to 3, in some embodiments of the present invention, the movable sealing mechanism 200 includes a supporting seat 210, a sliding block 220 and a matching seat 230, which are all located in the inner cavity 110, the supporting seat 210 and the matching seat 230 are respectively connected to the housing 100, the supporting seat 210 is provided with a first vent hole 211, the matching seat 230 is provided with a second vent hole 231, one end of the memory metal component 300 is connected to the supporting seat 210, the other end of the memory metal component 300 is connected to the sliding block 220, and the memory metal component 300 deforms to drive the sliding block 220 to close the second vent hole 231.
The supporting seat 210 is provided with a first vent hole 211, the matching seat 230 is provided with a second vent hole 231, and the fuel gas can flow through the gas inlet 120, the first vent hole 211, the second vent hole 231 and the gas outlet 130 so as to convey the fuel gas in normal operation. When the airflow flows backward, the memory metal member 300 is deformed by heating to drive the slider 220 to move to the position for plugging the second vent hole 231 on the mating seat 230, so as to achieve the purpose of plugging the gas channel.
Referring to fig. 2 and 3, in some embodiments of the utility model, the wall surface of the inner cavity 110 formed by the casing 100 is provided with a first positioning portion 140 and a second positioning portion 150, the first positioning portion 140 can abut against the supporting seat 210, and the second positioning portion 150 can abut against the mating seat 230.
The supporting seat 210 abuts against the first positioning portion 140 and the matching seat 230 abuts against the second positioning portion 150, so that the distance between the supporting seat 210 and the matching seat 230 is more stable, and the sliding block 220 does not block the second vent hole 231 when the memory metal part 300 is not heated, and when the memory metal part 300 is heated, the process that the sliding block 220 can block the second vent hole 231 is more reliable, and meanwhile, the assembly is more convenient.
In some embodiments of the present invention, the supporting base 210 and the mating base 230 are both in interference fit with the casing 100 for fixing.
Referring to fig. 1 to 3, in some embodiments of the present invention, a first guide structure 400 is disposed between the sliding block 220 and the mating seat 230, and the first guide structure 400 is used for limiting a moving direction of the sliding block 220.
The first guide structure 400 limits the moving direction of the slider 220, so that the slider 220 can more stably block the second vent hole 231, which is beneficial to improving the reliability.
Referring to fig. 1 to 3, in some embodiments of the present invention, the first guide structure 400 includes a guide post 410 disposed on the sliding block 220 and a guide hole 420 disposed on the mating seat 230, wherein the guide post 410 is inserted into the guide hole 420.
The guide post 410 of the sliding block 220 is inserted into the guide hole 420 of the mating seat 230, so that the sliding block 220 can only move along the direction that the guide post 410 extends into or exits the guide hole 420, thereby achieving the purpose of guiding, and having simple structure and convenient implementation.
The first guide structure 400 may also be an embodiment including a protrusion block provided on the slider 220 and a guide groove provided on the housing 100, the protrusion block being located in the guide groove to limit the moving direction of the slider 220.
Referring to fig. 1-3, in some embodiments of the present invention, a sealing ring 500 is disposed between the slider 220 and the mating receptacle 230.
By arranging the sealing ring 500 between the sliding block 220 and the matching seat, the sliding block 220 can more reliably seal the second air vent 231 on the matching seat 230, which is beneficial to improving the sealing performance of the sliding block 220 for sealing the second air vent 231.
Referring to fig. 1 to 3, in some embodiments of the present invention, the memory metal member 300 is a memory spring. The memory spring is beneficial to generating larger deformation when being heated so as to drive the sliding block 220 to generate displacement, thereby being beneficial to improving the reliability and facilitating the size design of various objects.
Referring to fig. 1 to 3, in some embodiments of the present invention, a second guide structure 600 is disposed on the supporting seat 210, and the second guide structure 600 is used for limiting the bias of the memory spring.
Due to the structural characteristics of the memory spring, the memory spring may deflect and skew when deformed under a force, and therefore, the second guide structure 600 is arranged to limit the deflection of the memory spring, which is beneficial to improving the reliability.
Referring to fig. 1 to 3, in some embodiments of the present invention, the second guiding structure 600 includes a protrusion 610 disposed on the supporting base 210, the protrusion 610 is inserted into the memory spring, and the protrusion 610 is provided with an air hole set 620 communicated with the first air hole 211.
Through being provided with bellying 610 and wearing to establish in memory spring for memory spring can only produce deformation along the length direction of bellying 610, is favorable to making memory spring deformation more stable, prevents skew, crooked, improves the reliability. The protruding portion 610 is provided with an air hole group 620 communicated with the first vent hole 211 to ensure the smoothness of the gas channel.
Referring to fig. 4, the gas water heater according to the second aspect of the present invention includes a housing 700 and the gas protection device, the housing 700 is provided with an air inlet 710 and a burner 720, and the housing 100 is connected to the air inlet 710 and the burner 720 respectively.
The housing 100 is connected to the intake pipe 710 and the burner 720, respectively, so that the gas in the intake pipe 710 can be delivered to the burner 720 through the gas passage for combustion. When the airflow flows backwards, the high-temperature gas generated by the combustion of the burner 720 flows back, so that the memory metal piece 300 is heated to deform, and then the memory metal piece 300 drives the movable sealing mechanism 200 to block the gas channel, the gas supply is cut off, the gas is stopped to be combusted, and the wall surface accident occurs. Therefore, the effect of automatically cutting off the gas supply can be realized without depending on an electric control mode when the airflow flows backwards, and the reliability is favorably improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The utility model is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the utility model, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.
Claims (10)
1. Gas protection device, its characterized in that includes:
the gas-fired water heater comprises a shell (100), wherein the shell (100) is provided with an inner cavity (110), and a gas inlet (120) and a gas outlet (130) which are communicated with the inner cavity (110), and the gas inlet (120), the inner cavity (110) and the gas outlet (130) form a gas channel;
a movable sealing mechanism (200) located in the internal cavity (110) and connected with the housing (100);
the memory metal part (300) is connected with the movable sealing mechanism (200), and the memory metal part (300) can deform according to temperature change to drive the movable sealing mechanism (200) to block the gas channel.
2. The gas protection device of claim 1, wherein: the movable sealing mechanism (200) comprises a supporting seat (210), a sliding block (220) and a matching seat (230) which are all located in an inner cavity (110), the supporting seat (210) and the matching seat (230) are respectively connected with the shell (100), the supporting seat (210) is provided with a first vent hole (211), the matching seat (230) is provided with a second vent hole (231), one end of the memory metal piece (300) is connected with the supporting seat (210), the other end of the memory metal piece (300) is connected with the sliding block (220), and the memory metal piece (300) generates deformation and can drive the sliding block (220) to block the second vent hole (231).
3. The gas protection device of claim 2, wherein: the wall surface of the inner cavity (110) formed by the shell (100) is provided with a first positioning part (140) and a second positioning part (150), the first positioning part (140) can be abutted against the supporting seat (210), and the second positioning part (150) can be abutted against the matching seat (230).
4. The gas protection device of claim 2, wherein: a first guide structure (400) is arranged between the sliding block (220) and the matching seat (230), and the first guide structure (400) is used for limiting the moving direction of the sliding block (220).
5. The gas protection device of claim 4, wherein: the first guide structure (400) comprises a guide column (410) arranged on the sliding block (220) and a guide hole (420) arranged on the matching seat (230), and the guide column (410) penetrates through the guide hole (420).
6. The gas protection device of claim 2, wherein: and a sealing ring (500) is arranged between the sliding block (220) and the matching seat (230).
7. The gas protection device of claim 2, wherein: the memory metal part (300) is a memory spring.
8. The gas protection device of claim 7, wherein: the supporting seat (210) is provided with a second guide structure (600), and the second guide structure (600) is used for limiting the deviation of the memory spring.
9. The gas protection device of claim 8, wherein: the second guide structure (600) comprises a protruding portion (610) arranged on the supporting seat (210), the protruding portion (610) penetrates through the memory spring, and an air hole group (620) communicated with the first air hole (211) is arranged on the protruding portion (610).
10. Gas heater, its characterized in that: comprising a body (700) and a gas protection device according to any one of claims 1 to 9, the body (700) being provided with an air inlet duct (710) and a burner (720), the housing (100) being connected to the air inlet duct (710) and the burner (720), respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122577673.1U CN216448401U (en) | 2021-10-25 | 2021-10-25 | Gas protection device and gas water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122577673.1U CN216448401U (en) | 2021-10-25 | 2021-10-25 | Gas protection device and gas water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216448401U true CN216448401U (en) | 2022-05-06 |
Family
ID=81351094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122577673.1U Active CN216448401U (en) | 2021-10-25 | 2021-10-25 | Gas protection device and gas water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216448401U (en) |
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2021
- 2021-10-25 CN CN202122577673.1U patent/CN216448401U/en active Active
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