CN219222482U - Gas circuit protection device and gas water heater - Google Patents
Gas circuit protection device and gas water heater Download PDFInfo
- Publication number
- CN219222482U CN219222482U CN202320709458.9U CN202320709458U CN219222482U CN 219222482 U CN219222482 U CN 219222482U CN 202320709458 U CN202320709458 U CN 202320709458U CN 219222482 U CN219222482 U CN 219222482U
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- inlet pipe
- gas
- main valve
- protection device
- pressure
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 238000001514 detection method Methods 0.000 claims abstract description 22
- 239000012528 membrane Substances 0.000 claims description 11
- 239000010985 leather Substances 0.000 claims description 10
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 6
- 230000002159 abnormal effect Effects 0.000 abstract description 10
- 239000007789 gas Substances 0.000 description 49
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 5
- 239000002737 fuel gas Substances 0.000 description 5
- 238000009530 blood pressure measurement Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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Abstract
The utility model provides a gas circuit protection device and a gas water heater, wherein the gas circuit protection device comprises a main valve, a gas inlet pipe, a pressure detection part and a proportional valve, the gas inlet pipe is connected with one end of the main valve, the other end of the main valve is connected with the proportional valve, the input end of the pressure detection part is connected with the gas inlet pipe and is used for detecting the pressure in the gas inlet pipe, and the output end of the pressure detection part is electrically connected with the main valve and is used for controlling the opening and closing of the main valve. The pressure of the air inlet pipe is detected by the pressure detection part, and according to the pressure value information, the air inlet path fault can be judged and can be processed in time. When the gas water heater is maintained and re-connected with the water inlet pipe and the gas inlet pipe, the power supply is connected to enable the gas water heater to work, when the pressure detection part displays that the pressure is abnormal, the fault connection possibility is indicated, the closing of the main valve is controlled through the pressure detection part, water is effectively prevented from entering the proportional valve and the whole gas pipeline, and potential safety hazards are greatly reduced.
Description
Technical Field
The utility model relates to the field of water heaters, in particular to a gas circuit protection device and a gas water heater.
Background
Because the current water heater market water heater models are many, the inlet interface is inconsistent with the inlet interface position, and the water heater of different inlet joint positions also exist for same brand. This can lead to the risk of misinterfacing the two interfaces during installation or servicing of the water heater by the door installer and the customer. When the two are in error, the water pressure is far greater than the air pressure, and the fuel gas proportional valve can be broken after the power-on operation, so that the whole machine cannot be used; if the air inlet connector is connected with the wrong water inlet pipe, but water is not discharged, the air inlet connector is connected with the gas supply pipe again, water in the gas path possibly enters the gas supply pipe, so that the gas supply pipe can be supplied with water, and the supply user of the whole gas pipeline is seriously affected.
Disclosure of Invention
The utility model aims to overcome the defect of high potential safety hazard caused by the fact that an air inlet interface of a water heater is connected with a water inlet pipe in a wrong way in the prior art, and provides an air path protection device and a gas water heater.
The utility model solves the technical problems by the following technical scheme: the utility model provides a gas path protection device which is characterized by comprising a main valve, a gas inlet pipe, a pressure detection component and a proportional valve, wherein the gas inlet pipe is connected to one end of the main valve, the other end of the main valve is connected to the proportional valve, the input end of the pressure detection component is connected to the gas inlet pipe and is used for detecting the pressure in the gas inlet pipe, and the output end of the pressure detection component is electrically connected to the main valve and is used for controlling the switch of the main valve.
In this scheme, detect the pressure of intake pipe through pressure detection part, detect the pressure of intake pipe in real time. When the pressure of the air inlet pipe is abnormal, the air inlet pipe is indicated to be faulty, and timely treatment is needed. The air pressure sensor is applied to a gas water heater and is used for detecting whether the air pressure is normal or not at ordinary times. When the gas water heater is maintained and re-connected with the water inlet pipe and the air inlet pipe, the power supply is connected to enable the gas water heater to work, when the pressure detection part shows that the pressure is abnormal, the possibility of wrong connection is indicated, the pressure detection part is used for controlling the closing of the main valve, water is effectively prevented from entering the proportional valve and the whole gas pipeline, and potential safety hazards are greatly reduced.
Preferably, the pressure detecting component comprises a film, a strain gauge and a control unit, the air inlet pipe is provided with a through hole, the film is connected to the air inlet pipe and covers the through hole, the strain gauge is connected to one side of the film far away from the through hole, one end of the control unit is electrically connected to the strain gauge, and the other end of the control unit is electrically connected to the main valve.
In this scheme, set up the through-hole in the intake pipe, set up the foil gage on the involucra to detect the atmospheric pressure in the intake pipe through the through-hole, simple structure conveniently realizes. The coating covers the through hole, so that the air flow passes through the through hole and fully contacts with one side of the coating, and the strain gauge on the other side of the coating can conveniently and sensitively detect the air pressure. When the air pressure is abnormal, the control unit is used for controlling the opening and closing of the main valve in time.
Preferably, the gas circuit protection device further comprises an end cover, the end cover is connected to the gas inlet pipe, and the leather membrane and the strain gauge are both located in the end cover.
In this scheme, the end cover is connected in the intake pipe for protection involucra and foil gage make its operational environment stable, thereby carry out the measurement of pressure better.
Preferably, the end cover is provided with a breathing hole.
In this scheme, there is the breathing hole end cover top, guarantees involucra and atmospheric pressure contact, ensures that pressure measurement is accurate.
Preferably, the end cover is provided with at least one wire outlet hole, and the wire outlet hole is used for connecting the strain gauge and the control unit through a lead wire.
In the scheme, at least one wire outlet hole is formed in the end cover, the strain gauge lead wire is ensured to extend out of the connection control unit, and the pressure of the air inlet pipe can be self-detected when the power is on.
Preferably, the outer wall of the air inlet pipe is provided with an outwards-protruding structure, the through hole penetrates through the protruding structure, and the leather membrane is connected to the top end of the protruding structure.
In this scheme, protruding structure makes the through-hole longer, and the air current of being convenient for flows to the involucra along the through-hole to the atmospheric pressure in the intake pipe is conveniently accurately measured. Meanwhile, the arrangement of the protruding structure is convenient for the installation of the air inlet pipe and the leather membrane, and the structural strength of the position of the through hole formed in the air inlet pipe is guaranteed.
Preferably, the end cap is connected to the boss structure by a screw.
In this scheme, the end cover passes through screw connection in protruding structure, and the connection is stable, is convenient for change, avoids further causing the destruction to the intake pipe.
Preferably, the air inlet pipe, the valve body of the main valve and the valve body of the proportional valve are integrally formed.
In the scheme, the valve bodies of the air inlet pipe, the main valve and the proportional valve are integrally formed, so that the possibility of air leakage is reduced, and the working environments of the air inlet pipe, the main valve and the proportional valve are stable.
Preferably, the main valve is an electromagnetic valve.
In this scheme, the main valve is the solenoid valve, and the response is sensitive, and the quick switch avoids the potential safety hazard.
The utility model also provides a gas water heater which is characterized by comprising the gas circuit protection device.
On the basis of conforming to the common knowledge in the field, the above preferred conditions can be arbitrarily combined to obtain the preferred examples of the utility model.
The utility model has the positive progress effects that: in the present utility model, the pressure of the intake pipe is detected by the pressure detecting means, and the pressure of the intake pipe is detected in real time. When the pressure of the air inlet pipe is abnormal, the air inlet pipe is indicated to be faulty, and timely treatment is needed. The air pressure sensor is applied to a gas water heater and is used for detecting whether the air pressure is normal or not at ordinary times. When the gas water heater is maintained and re-connected with the water inlet pipe and the air inlet pipe, the power supply is connected to enable the gas water heater to work, when the pressure detection part shows that the pressure is abnormal, the possibility of wrong connection is indicated, the pressure detection part is used for controlling the closing of the main valve, water is effectively prevented from entering the proportional valve and the whole gas pipeline, and potential safety hazards are greatly reduced.
Drawings
Fig. 1 is a schematic structural diagram of a gas circuit protection device according to the present utility model.
Fig. 2 is a partial structural sectional view of the gas path protecting device of the present utility model.
Fig. 3 is an enlarged view of the structure of the portion a of fig. 2 according to the present utility model.
FIG. 4 is a schematic diagram of a gas water heater according to the present utility model.
Reference numerals illustrate:
main valve 1
Through hole 22
End cap 33
Proportional valve 4
Gas water heater 5
Blower 53
Detailed Description
The utility model will now be more fully described by way of example only and with reference to the accompanying drawings, but the utility model is not thereby limited to the scope of the examples described.
The present embodiment discloses a gas circuit protection device, as shown in fig. 1, 2, 3 and 4, which includes a main valve 1, a gas inlet pipe 2, a pressure detecting component 3 and a proportional valve 4, wherein the gas inlet pipe 2 is connected to one end of the main valve 1, the other end of the main valve 1 is connected to the proportional valve 4, the input end of the pressure detecting component 3 is connected to the gas inlet pipe 2 and is used for detecting the pressure in the gas inlet pipe 2, and the output end of the pressure detecting component 3 is electrically connected to the main valve 1 and is used for controlling the switch of the main valve 1.
Specifically, the fuel gas enters the main valve 1 through the intake pipe 2 and then enters the proportional valve 4. The pressure detection part 3 is arranged at the position of the air inlet pipe 2 close to the main valve 1, the pressure of the air inlet pipe 2 is detected in real time through the pressure detection part 3, when the pressure of the air inlet pipe 2 is larger than the pressure of normal fuel gas, the pressure is abnormal, that is, a pipeline connected with the air inlet pipe 2 is a waterway, and the pipeline is misplaced and needs to be processed in time. Meanwhile, if the water pipe is connected to the air inlet pipe 2, the pressure detection part 3 detects that the pressure is higher than the pressure of normal fuel gas, the pressure detection part 3 sends a signal to the main valve 1 and is used for controlling the main valve 1 to be closed, so that water is effectively prevented from entering the proportional valve 4 and the whole fuel gas pipeline, and potential safety hazards are greatly reduced.
In the present embodiment, the pressure detecting member 3 includes a diaphragm 31, a strain gauge 32, and a control unit, the intake pipe 2 is provided with a through hole 22, the diaphragm 31 is connected to the intake pipe 2 and covers the through hole 22, the strain gauge 32 is connected to one side of the diaphragm 31 away from the through hole 22, one end of the control unit is electrically connected to the strain gauge 32, and the other end of the control unit is electrically connected to the main valve 1.
Specifically, the coating 31 may be a silicon cup. A through hole 22 is provided in the outer peripheral side surface of the intake pipe 2, and a coating 31 covers the outside of the through hole 22. The film 31 is provided with the strain gauge 32, the air flow contacts the film 31 through the through hole 22, and the strain gauge 32 can detect the pressure through the film 31, so that the structure is provided to protect the strain gauge 32, and the strain gauge 32 can detect the air pressure in the air inlet pipe 2 through the through hole 22, so that the structure is simple and the implementation is convenient. The film 31 completely covers the outer side of the through hole 22, so that the air inlet pipe 2 is airtight, the air flow is fully contacted with one side of the film 31 through the through hole 22, the contact area is increased, the strain gauge 32 on the other side of the film 31 is convenient for sensitively detecting the air pressure, and when the air pressure is abnormal, the opening and closing of the main valve 1 are timely controlled by the control unit.
The strain gauge 32 converts the detected pressure into a pressure signal value and transmits the pressure signal value to the control unit, and the control unit is used for comparing the pressure signal value of the received strain gauge 32 with the internal set range thereof, so as to judge whether the air inlet pipe 2 is connected with the air inlet pipe in error. If the connection is wrong, the control unit sends a control signal to the main valve 1 and is used for controlling the main valve 1 to be closed, and if the connection is wrong, the control unit sends a control signal to the main valve 1 and is used for controlling the main valve 1 to be opened.
In this embodiment, the air path protecting device further includes an end cover 33, the end cover 33 is connected to the air inlet pipe 2, and the membrane 31 and the strain gauge 32 are both located in the end cover 33.
Specifically, the end cap 33 is connected to the outside of the air intake pipe 2 for protecting the diaphragm 31 and the strain gauge 32, and stabilizing the working environment thereof, thereby making it possible to perform pressure measurement more effectively.
In the present embodiment, the end cap 33 is provided with a breathing hole 331.
Specifically, a breathing hole 331 is formed above the end cover 33 and is opposite to the through hole 22, so that the leather membrane 31 is ensured to be in contact with the atmospheric pressure, and the pressure measurement is ensured to be accurate.
In the present embodiment, at least one wire outlet hole 332 is provided in the end cap 33, and the wire outlet hole 332 is used for wire-connecting the strain gauge 32 and the control unit.
Specifically, two wire outlets 332 are oppositely disposed on two opposite sides of the end cover 33 near the through hole 22, so that the strain gauge 32 can output multiple pressure values, and measurement accuracy is improved. When one output end needs to be replaced, the other output end can also work continuously, so that the safety of the air circuit is enhanced. The provision of the wire outlet hole 332 ensures that the leads of the strain gauge 32 extend out of the connection control unit, enabling self-checking of the pressure of the air intake pipe 2 when energized.
In the present embodiment, the outer wall of the air intake pipe 2 is provided with a convex structure 21 protruding outward, the through hole 22 penetrates the convex structure 21, and the coating 31 is connected to the tip of the convex structure 21.
Specifically, the protrusion structure 21 protrudes outwards, the internal channel of the air inlet pipe 2 is not affected, the through hole 22 penetrates through the protrusion structure 21, so that the through hole 22 is lengthened, and air flow can flow along the through hole 22 to the coating 31 conveniently and accurately, so that the air pressure in the air inlet pipe 2 is measured conveniently and accurately. Meanwhile, the arrangement of the protruding structure 21 facilitates the installation of the air inlet pipe 2 and the leather membrane 31, and the structural strength of the position of the air inlet pipe 2 where the through hole 22 is formed is also ensured. The whole protruding structure 21 can be square columnar, and is convenient to produce and connect with the end cover 33. The raised structures 21 may be other shapes as desired.
In the present embodiment, the end cap 33 is connected to the boss structure 21 by a screw.
Specifically, the end cap 33 may be disposed corresponding to a sectional shape of the protrusion structure 21. The present embodiment is square, and threaded holes are drilled at two opposite corners, and corresponding holes are drilled at two opposite corners of the protruding structure 21, and screws connect the end cover 33 and the protruding structure 21 through the matched threaded holes. The end cover 33 is connected to the protruding structure 21 through a screw, so that the connection is stable, the replacement is convenient, and the air inlet pipe 2 is prevented from being damaged further.
In the present embodiment, the intake pipe 2, the valve body of the main valve 1, and the valve body of the proportional valve 4 are integrally formed.
Specifically, the air inlet pipe 2, the valve body of the main valve 1 and the valve body of the proportional valve 4 are integrally formed, so that the possibility of air leakage is reduced, and the working environments of the air inlet pipe 2, the main valve 1 and the proportional valve 4 are stable.
In the present embodiment, the main valve 1 is a solenoid valve.
In the scheme, the main valve 1 is an electromagnetic valve, so that the reaction is sensitive, the valve is opened and closed rapidly, and potential safety hazards are avoided.
The gas circuit protection device further comprises an alarm device according to the requirement, and when the pressure is abnormal, the alarm device gives out alarm sound to remind a user.
The utility model also discloses a gas water heater 5, as shown in fig. 4, wherein the gas water heater 5 comprises the gas circuit protection device. The gas water heater 5 further comprises a water inlet pipe 51, a water outlet pipe 52, a fan 53, a combustion chamber 54, a heat exchanger 55 and an alarm device. The gas is self-checked through the gas inlet pipe 2 and the gas path protection device, when the pressure is normal, the main valve 1 is opened, the gas enters the main valve 1 and then enters the proportional valve 4, and finally enters the combustion chamber 54 to be mixed with the air introduced by the fan 53 for combustion. The heat generated by the combustion heats the cold water entering from the inlet pipe 51 in the heat exchanger 55, and the hot water is discharged from the outlet pipe 52 out of the gas water heater 5 for the user. When the pressure detected by the gas circuit protection device is abnormal, the gas inlet pipe 2 is indicated to report faults and needs to be processed in time, the main valve 1 is controlled to be closed through the pressure detection part 3, water is effectively prevented from entering the proportional valve 4 and the whole gas pipeline, and meanwhile, an alarm sound is sent to remind a user, so that potential safety hazards are greatly reduced.
While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the utility model is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the utility model, but such changes and modifications fall within the scope of the utility model.
Claims (10)
1. An air circuit protection device which is characterized in that: the air inlet pipe is connected to one end of the main valve, the other end of the main valve is connected to the proportional valve, the input end of the pressure detection part is connected to the air inlet pipe and used for detecting pressure in the air inlet pipe, and the output end of the pressure detection part is electrically connected to the main valve and used for controlling the switch of the main valve.
2. The gas circuit protection device of claim 1, wherein: the pressure detection part comprises a leather membrane, a strain gauge and a control unit, wherein the air inlet pipe is provided with a through hole, the leather membrane is connected with the air inlet pipe and covers the through hole, the strain gauge is connected to one side, far away from the through hole, of the leather membrane, one end of the control unit is electrically connected with the strain gauge, and the other end of the control unit is electrically connected with the main valve.
3. The gas circuit protection device of claim 2, wherein: the gas circuit protection device further comprises an end cover, the end cover is connected to the gas inlet pipe, and the leather membrane and the strain gauge are both located in the end cover.
4. A gas circuit protection device according to claim 3, wherein: and the end cover is provided with a breathing hole.
5. A gas circuit protection device according to claim 3, wherein: and the end cover is provided with at least one wire outlet hole, and the wire outlet hole is used for connecting the strain gauge and the control unit through a lead.
6. A gas circuit protection device according to claim 3, wherein: the outer wall of the air inlet pipe is provided with an outwards-protruding structure, the through hole penetrates through the protruding structure, and the leather membrane is connected to the top end of the protruding structure.
7. The gas circuit protection device of claim 6, wherein: the end cover is connected to the protruding structure through a screw.
8. The gas circuit protection device of claim 1, wherein: the air inlet pipe, the valve body of the main valve and the valve body of the proportional valve are integrally formed.
9. The gas circuit protection device of claim 1, wherein: the main valve is an electromagnetic valve.
10. A gas water heater, characterized in that: the gas water heater comprises a gas circuit protection device as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320709458.9U CN219222482U (en) | 2023-04-03 | 2023-04-03 | Gas circuit protection device and gas water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320709458.9U CN219222482U (en) | 2023-04-03 | 2023-04-03 | Gas circuit protection device and gas water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219222482U true CN219222482U (en) | 2023-06-20 |
Family
ID=86741306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320709458.9U Active CN219222482U (en) | 2023-04-03 | 2023-04-03 | Gas circuit protection device and gas water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219222482U (en) |
-
2023
- 2023-04-03 CN CN202320709458.9U patent/CN219222482U/en active Active
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