CN216143257U - Electromagnetic valve and gas water heater comprising same - Google Patents
Electromagnetic valve and gas water heater comprising same Download PDFInfo
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- CN216143257U CN216143257U CN202122088876.4U CN202122088876U CN216143257U CN 216143257 U CN216143257 U CN 216143257U CN 202122088876 U CN202122088876 U CN 202122088876U CN 216143257 U CN216143257 U CN 216143257U
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Abstract
The utility model discloses an electromagnetic valve and a gas water heater comprising the same, wherein the electromagnetic valve comprises a shell and a valve rod, the shell comprises an air inlet and an air outlet, the valve rod is arranged in the shell, one end of the valve rod is a plugging end, and the plugging end can be far away from or close to the air outlet; the other end of the valve rod is a butt joint end, the butt joint end is in sealing fit with the inner side face of the shell, the butt joint end and the shell form a sealing space, a communication channel is further arranged in the valve rod, and the sealing space is communicated with the air inlet through the communication channel; the gas water heater comprises the electromagnetic valve. When the electromagnetic valve is powered on and opened, the abutting end of the valve rod moves towards the bottom of the shell under the action of a magnetic field, the sealing space and the communication channel form an air cavity similar to an inflator, the movement of the valve rod is blocked by pressure difference on two sides of the sealing space, the impact noise between the abutting end and the shell and between the blocking end and the air outlet can be reduced, and the impact noise between the abutting end and the bottom of the shell can be further reduced by the buffer part.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to an electromagnetic valve and a gas water heater comprising the same.
Background
Solenoid valves are the basic elements of automation used to control fluids for adjusting the direction, flow rate, velocity and other parameters of a medium in a control system. The working principle of the electromagnetic valve is that a magnetic field generated by an electromagnetic coil adsorbs a valve rod made of a magnetic material to move towards a fixed base, and the valve rod blocks or does not block an air outlet of the valve when moving so as to control the opening and closing of the valve. Since the electromagnetic force is large, the valve rod inevitably collides with the base when abutting against the base, and noise is generated.
The solenoid valve is widely used in the bathroom industry, but the noise that uses the solenoid valve to produce seriously influences user experience. Taking the electromagnetic valve applied to the gas water heater as an example, when the electromagnetic valve is electrified, the electromagnetic coil generates a magnetic field, the valve rod moves towards the base under the action of the magnetic field, the moving plugging end of the valve rod is separated from the gas outlet, and at the moment, the gas circulates; after the power is cut off, the magnetic field disappears, the spring part at the blocking end drives the valve rod to reset and block the valve port, and at the moment, the gas channel is blocked. However, in the switching process of the electromagnetic valve, the noise generated by the collision between the abutting end and the base is very large and reaches more than 60 decibels, and particularly, when the electromagnetic valve operates at night, the problem of the noise generated by the operation of the electromagnetic valve is very prominent.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides an electromagnetic valve and a gas water heater comprising the same.
The utility model solves the technical problems through the following technical scheme:
the electromagnetic valve is characterized by comprising a shell and a valve rod, wherein the shell comprises an air inlet and an air outlet, the valve rod is arranged in the shell, one end of the valve rod is a blocking end, and the blocking end can be far away from or close to the air outlet; the other end of the valve rod is a butt joint end, the butt joint end is in sealing fit with the inner side face of the shell, the butt joint end and the shell form a sealing space, a communicating channel is further arranged in the valve rod, and the sealing space is communicated with the air inlet through the communicating channel.
In this scheme, when the solenoid valve circular telegram was opened, the coil of solenoid valve produced magnetic field, and the butt end of valve rod moves to the bottom direction of casing under the effect in magnetic field, and the air cavity similar to "inflater" is formed with the intercommunication passageway in the confined space, and the pressure differential of confined space both sides hinders the motion of valve rod, can reduce the striking noise of butt end and casing, shutoff end and gas outlet. In addition, the communicating channel is communicated with the air inlet and the sealed space, so that the gas in the sealed space is communicated with the external gas environment, and the condition that the electromagnetic valve cannot be opened or closed is avoided.
Preferably, the solenoid valve further includes a sealing ring, the sealing ring is disposed between the abutting end and the inner side surface of the housing, and the sealing space is formed between the sealing ring, the abutting end and the housing.
In this scheme, the sealing washer can play sealed effect, holds to the gas outlet direction motion at the shutoff, and/or, when the butt end moved to the bottom direction of casing, the sealing washer can play the buffering effect, reduces the kinetic energy of striking, and the sealing washer can also avoid producing metal friction noise between valve rod and the casing.
Preferably, the outer surface of the abutting end is provided with a slot, and the sealing ring is installed in the slot.
In this embodiment, the depth of the groove is related to the size and shape of the selected seal ring, but alternatively, the seal ring may be grooved or otherwise installed in the housing.
Preferably, the communication channel comprises a flow limiting section, a flow passing section and a guiding section, and the sealing space is communicated with the air inlet in sequence through the flow limiting section, the flow passing section and the guiding section.
In this scheme, when gas in the confined space flows to the air inlet, the effect of the flow of restriction gas outflow is played to the current-limiting section, and the circulation section makes gas keep circulating, and the direction section changes the gas flow direction and makes gas flow to the air inlet.
Preferably, the flow restricting section and the flow passage section are axially communicated with the sealing space, and the guide section is formed by inwards sinking the outer surface of the valve rod.
In this scheme, the axial setting of valve rod is followed with the circulation section to the current-limiting section, and the gas flow of being convenient for also is convenient for process, and the valve rod surface inwards caves in to the circulation section and forms the direction section.
Preferably, the cross-sectional area of the flow restriction section is smaller than the cross-sectional area of the flow passage section;
and/or the cross-sectional area of the flow restriction section is smaller than that of the guide section;
and/or the cross-sectional area of the guide section is smaller than the cross-sectional area of the flow-through section.
In the scheme, the cross sectional area of the flow limiting section is small, so that the volume of gas flowing out of the sealed space in unit time is limited, and the gas in the sealed space maintains higher pressure;
and/or the cross-sectional area of the guide section is set to be smaller than that of the flow section, so that the volume of the gas flowing out of the sealed space per unit time further plays a role in strengthening the effect of the 'inflator'.
Preferably, the abutting end includes an accommodating cavity, the accommodating cavity is disposed between the end surface of the abutting end and the communicating channel, the accommodating cavity is adapted to the shape of the bottom of the housing, and when the abutting end is close to the bottom of the housing, the bottom of the housing is accommodated in the accommodating cavity.
In this scheme, hold the chamber and locate between the terminal surface of butt end and the terminal surface of intercommunication passageway to relative with the bottom of casing, hold the chamber and be open design, at butt end and casing looks butt in-process, the bottom holding of casing is in holding the intracavity gradually.
Preferably, the solenoid valve includes a base, the base is disposed at the bottom of the housing, the shape of the base gradually decreases from the bottom to the top, the shape of the accommodating chamber gradually decreases from the end face of the abutting end to the cross section of the communicating passage, and when the abutting end abuts against the base, a gap exists between the inner side wall of the accommodating chamber and the base.
In this scheme, the base all can be for the round platform shape with the appearance that holds the chamber, considers manufacturing tolerance, and the tapering that holds the appearance in chamber can set up slightly to be less than the tapering of base, avoids base and the side that holds the chamber to bump at the butt in-process.
Preferably, the electromagnetic valve includes a buffer portion, the buffer portion is disposed inside the abutting end, when the abutting end is close to the bottom of the housing, the buffer portion is located between the abutting end and the bottom of the housing, and the buffer portion abuts against the bottom of the housing.
In this scheme, kinetic energy when buffering butt end and casing bottom butt can be further cushioned to the buffering portion, avoids the metal collision noise between butt end and the casing bottom simultaneously.
Preferably, the buffer portion is provided at a port of the communication passage;
and/or the buffer part is arranged in the accommodating cavity of the abutting end.
In this scheme, considering cheap installation, the buffer can be for holding the whole or partial profile modeling of chamber shape, with hold the chamber laminating installation, or, the buffer is located the intercommunication passageway entrance to with hold the chamber counterbalance, so that with the bottom butt of casing.
A gas water heater is characterized by comprising the electromagnetic valve.
On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the utility model.
The positive progress effects of the utility model are as follows: the sealing space and the communicating channel form an air cavity similar to an inflator, pressure difference on two sides of the sealing space hinders movement of the valve rod, impact noise of the abutting end and the shell, and impact noise of the blocking end and the air outlet can be reduced, and the impact noise of the abutting end and the bottom of the shell can be further reduced by the buffer part. Compared with the prior art, the electromagnetic valve has the advantages that the noise generated when the electromagnetic valve works can be effectively reduced, and the performance of the product is improved.
Drawings
Fig. 1 is a perspective view of a solenoid valve according to an embodiment of the present invention.
FIG. 2 is a schematic diagram of an internal structure of a solenoid valve according to an embodiment of the present invention
Fig. 3 is a schematic diagram of an internal structure of the solenoid according to an embodiment of the present invention when the solenoid is opened.
Fig. 4 is a schematic diagram of an internal structure of the electromagnetic valve according to an embodiment of the present invention when closed.
Description of reference numerals:
Plugging end 21
Abutting end 22
Accommodating chamber 221
Sealed space 3
Communication passage 4
Flow-through section 42
Detailed Description
The utility model is further illustrated by way of example and with reference to the accompanying drawings, which are not intended to limit the scope of the utility model thereto.
As shown in fig. 1-4, the present invention provides a solenoid valve 100, which includes a housing 1 and a valve rod 2, wherein the housing 1 includes an air inlet 11 and an air outlet 12, the valve rod 2 is disposed in the housing 1, one end of the valve rod 2 is a blocking end 21, and the blocking end 21 can be far away from or close to the air outlet 12; the other end of the valve rod 2 is a butt joint end 22, the butt joint end 22 is in sealing fit with the inner side face of the shell 1, the butt joint end 22 and the shell 1 form a sealing space 3, a communication channel 4 is further arranged in the valve rod 2, and the sealing space 3 is communicated with the air inlet 11 through the communication channel 4.
When the electromagnetic valve 100 is powered on and opened, the coil of the electromagnetic valve 100 generates a magnetic field, the abutting end 22 of the valve rod 2 moves towards the bottom direction of the shell 1 under the action of the magnetic field to compress the sealing space 3, the sealing space 3 and the communication channel 4 form an air cavity similar to an 'inflator', and air in the air cavity can only flow to the air inlet 11 through the communication channel 4. On one hand, kinetic energy needs to be consumed when the abutting end 22 compresses gas to do work, and the reaction force generated by air pressure in the air cavity hinders the movement of the valve rod 2, on the other hand, the kinetic energy is also consumed when the abutting end 22 and the shell 1 do friction movement, so that the energy and the speed during impact are reduced, and the effect of reducing noise is achieved; when the electromagnetic valve 100 is powered off, the valve rod 2 moves towards the air outlet 12, and the abutting end 22 drives the 'inflator' to reset so as to block the movement of the valve rod 2, so that the collision is reduced, and the noise is reduced. Meanwhile, the communication channel 4 communicates the air inlet 11 with the sealed space 3, so that the gas in the sealed space 3 circulates with the external gas environment, and the situation that the electromagnetic valve 100 cannot be opened or closed is avoided.
As an embodiment, the coil of the solenoid valve 100 may be a copper wire wound on a coil former provided on the outer circumference of the housing 1, and the valve stem 2 is made of a magnetizable material. When the electromagnetic valve 100 is not powered on, the plugging end 21 is provided with a backup pressure spring which provides a certain pressure to enable the plugging end 21 to plug the air outlet 12; when the electromagnetic valve 100 is electrified, direct current generates a magnetic pole in a fixed direction through the coil, and the valve rod 2 moves under the action of magnetic field force which is far greater than the pressure of the backup pressure spring; when the solenoid valve 100 is powered off, the magnetic field force disappears, and the valve rod 2 is reset under the action of the back-up spring.
The solenoid valve 100 further comprises a sealing ring 5, wherein the sealing ring 5 is arranged between the abutting end 22 and the inner side surface of the housing 1, and a sealing space 3 is formed between the sealing ring 5, the abutting end 22 and the housing 1.
The sealing ring 5 can play a role in sealing, when the plugging end 21 moves towards the air outlet 12 or the abutting end 22 moves towards the bottom of the shell 1, the sealing ring 5 can play a role in buffering, the kinetic energy of impact is reduced, and the sealing ring 5 can also avoid metal friction noise between the valve rod 2 and the shell 1.
As shown in fig. 3 and 4, the outer surface of the abutting end 22 is provided with a slot 23, and the sealing ring 5 is installed in the slot 23. In the present embodiment, the depth of the groove 23 is related to the size and shape of the selected seal ring 5, but it is of course possible to choose to install the groove 23 in the housing 1 or to install the seal ring 5 in a manner that would otherwise facilitate the manufacturing process. Further, the sealing ring 5 can be a rubber sealing ring 5 or a silica gel sealing ring 5, or an O-shaped sealing ring 5 or a U-shaped sealing ring 5.
The communication passage 4 includes a flow restriction section 41, a flow passage section 42, and a guide section 43, and the sealed space 3 is sequentially communicated with the gas inlet 11 through the flow restriction section 41, the flow passage section 42, and the guide section 43.
In the present embodiment, when the gas in the sealed space 3 flows toward the gas inlet 11, the flow restriction section 41 functions to restrict the flow rate of the gas flowing out, the flow passage section 42 keeps the gas flowing, and the guide section 43 changes the flow direction of the gas so that the gas flows to the gas inlet 11.
The flow restricting section 41 and the flow passage section 42 are axially communicated with the sealing space 3, and the guide section 43 is formed by inwards sinking the outer surface of the valve rod 2.
In this embodiment, the gas in the sealed space 3 flows to the flow section 42 along the central axis direction of the valve rod 2, and changes to radial flow through the guide section 43, the flow limiting section 41 and the flow section 42 which are axially arranged facilitate the gas flow and also facilitate the processing, and the radial arrangement of the guide section 43 avoids penetrating the valve rod 2 from the axial direction, and avoids influencing the plugging end 21 to plug the gas outlet 12. The flow restriction section 41, the flow passage section 42 and the guide section 43 may be integrally formed or may be formed by a sectional process.
As shown in fig. 3 and 4, the cross-sectional area of the flow restriction section 41 is smaller than the cross-sectional areas of the flow passage section 42 and the guide section 43, and the cross-sectional area of the guide section 43 is smaller than the cross-sectional area of the flow passage section 42.
In the present embodiment, the cross-sectional area of the restriction section 41 is minimized, limiting the volume of gas flowing out of the sealed space 3 per unit time, so that the gas in the sealed space 3 maintains a high pressure. The cross-sectional area of the guide section 43 is set smaller than that of the flow section 42, and the volume of gas flowing out of the sealed space 3 per unit time further serves to reinforce the "pump" effect.
In this embodiment, the electromagnetic valve 100 includes a base 6, the base 6 is disposed at the bottom of the housing 1, the base 6 is in a truncated cone shape, and the cross-sectional area gradually decreases from the bottom to the top of the housing 1; the abutting end 22 includes an accommodating cavity 221, the accommodating cavity 221 is disposed between the end surface of the abutting end 22 and the inlet of the flow-limiting section 41, the accommodating cavity 221 has a circular truncated cone shape corresponding to the shape of the base 6, and when the abutting end 22 abuts against the base 6, the base 6 is accommodated in the accommodating cavity 221. In consideration of manufacturing tolerances, the taper of the outer shape of the accommodation chamber 221 may be set slightly smaller than the taper of the base 6, avoiding collision of the base 6 with the side surface of the accommodation chamber 221 during abutment.
The electromagnetic valve 100 further includes a buffer portion 222, the buffer portion 222 is disposed inside the abutting end 22, the abutting end 22 abuts against the base 6 through the buffer portion 222, that is, an end surface of the base 6 abuts against the buffer portion 222, and a gap still exists between the base 6 and an inner side wall of the accommodating cavity 221. The buffer portion 222 can further buffer the kinetic energy of the abutting end 22 abutting against the base 6, thereby avoiding the generation of metal collision noise between the abutting end 22 and the base 6. The shape of the buffer portion 222 may be a truncated cone, a sheet, a special shape, etc., and the material of the buffer portion 222 may be an elastic material, a foam material, etc., in this embodiment, the buffer portion 222 is a rubber buffer pad, as shown in fig. 3 and 4, and the rubber buffer pad may be a hollow cylinder-like shape.
The buffer portion 222 is provided at a port of the communication passage 4; and/or the buffer 222 is arranged in the accommodating cavity 221 of the abutting end 22.
In the present embodiment, the buffering portion 222 is installed at the inlet of the communication channel 4 and abuts against the accommodating cavity 221 of the abutting end 22, the buffering portion 222 is installed in close contact with the inner wall of the communication channel 4, a through hole is formed in the buffering portion 222, and the through hole serves as the flow restriction section 41 and forms a part of the communication channel 4, as shown in fig. 3 and 4, the outer diameter of the buffering portion 222 can be designed according to the minimum inner diameter of the accommodating cavity 221, so as to facilitate the processing of the joint of the accommodating cavity 221 and the communication channel 4. In other embodiments, the buffer portion 222 may also follow the shape of the accommodating cavity 221, and be installed to fit the accommodating cavity 221, such as an O-ring.
The utility model also discloses a gas water heater, which comprises the electromagnetic valve 100.
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 that 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 spirit and scope of the utility model, and these changes and modifications are within the scope of the utility model.
Claims (11)
1. A solenoid valve is characterized by comprising a shell and a valve rod, wherein the shell comprises an air inlet and an air outlet, the valve rod is arranged in the shell, one end of the valve rod is a blocking end, and the blocking end can be far away from or close to the air outlet; the other end of the valve rod is a butt joint end, the butt joint end is in sealing fit with the inner side face of the shell, the butt joint end and the shell form a sealing space, a communicating channel is further arranged in the valve rod, and the sealing space is communicated with the air inlet through the communicating channel.
2. The solenoid valve of claim 1, further comprising a sealing ring disposed between the abutting end and an inner side of the housing, wherein the sealing ring, the abutting end, and the housing form the sealed space therebetween.
3. The solenoid valve of claim 2 wherein said abutment end outer surface is provided with a slot, said sealing ring being mounted in said slot.
4. The solenoid valve according to claim 1, wherein said communication passage comprises a flow restriction section, a flow passage section and a guide section, said sealed space being in communication with said gas inlet port in sequence through said flow restriction section, said flow passage section and said guide section.
5. The solenoid valve as claimed in claim 4, wherein said flow restricting section and said flow passage section are in axial communication with said sealed space, and said guide section is formed by an inward recess of an outer surface of said valve stem.
6. The solenoid valve as claimed in claim 4, wherein the cross-sectional area of said flow restriction section is less than the cross-sectional area of said flow section;
and/or the cross-sectional area of the flow restriction section is smaller than that of the guide section;
and/or the cross-sectional area of the guide section is smaller than the cross-sectional area of the flow-through section.
7. The solenoid valve of claim 1, wherein the abutting end comprises an accommodating cavity, the accommodating cavity is arranged between the end surface of the abutting end and the communication channel, the accommodating cavity is adapted to the shape of the bottom of the housing, and when the abutting end is close to the bottom of the housing, the bottom of the housing is accommodated in the accommodating cavity.
8. The solenoid valve according to claim 7, further comprising a base, wherein the base is disposed at the bottom of the housing, the base has a shape that gradually decreases in cross section from the bottom to the top, the accommodating chamber has a shape that gradually decreases in cross section from the end surface of the abutting end to the communication passage, and when the abutting end abuts against the base, a gap exists between an inner sidewall of the accommodating chamber and the base.
9. The solenoid valve according to any one of claims 1 to 8, characterized in that it comprises a buffer portion provided inside said abutment end, said buffer portion being located between said abutment end and the bottom of said housing when said abutment end is close to the bottom of said housing, and said buffer portion abutting against the bottom of said housing.
10. The electromagnetic valve according to claim 9, wherein the buffer portion is provided at a port of the communication passage;
and/or the buffer part is arranged in the accommodating cavity of the abutting end.
11. A gas water heater, characterized in that it employs an electromagnetic valve according to any one of claims 1-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122088876.4U CN216143257U (en) | 2021-08-31 | 2021-08-31 | Electromagnetic valve and gas water heater comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122088876.4U CN216143257U (en) | 2021-08-31 | 2021-08-31 | Electromagnetic valve and gas water heater comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216143257U true CN216143257U (en) | 2022-03-29 |
Family
ID=80810963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122088876.4U Active CN216143257U (en) | 2021-08-31 | 2021-08-31 | Electromagnetic valve and gas water heater comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216143257U (en) |
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2021
- 2021-08-31 CN CN202122088876.4U patent/CN216143257U/en active Active
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