CN110345299B - Electromagnetic valve, proportional valve assembly and water heater - Google Patents
Electromagnetic valve, proportional valve assembly and water heater Download PDFInfo
- Publication number
- CN110345299B CN110345299B CN201910609603.4A CN201910609603A CN110345299B CN 110345299 B CN110345299 B CN 110345299B CN 201910609603 A CN201910609603 A CN 201910609603A CN 110345299 B CN110345299 B CN 110345299B
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- piston rod
- electromagnetic
- connecting piece
- solenoid valve
- valve assembly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
Abstract
The invention discloses an electromagnetic valve, a proportional valve assembly and a water heater. The solenoid valve includes: an electromagnetic generating section; the piston rod is movably inserted in the electromagnetic generating part; the elastic piece is used for providing a first acting force along a first direction to the piston rod, and the first direction is the direction in which the piston rod extends out of the electromagnetic generating part; the connecting piece is arranged at one end of the piston rod, is made of functional materials and can be switched between an initial state and an elastic deformation state; the limiting piece is arranged at one end, far away from the piston rod, of the connecting piece and used for limiting the piston rod to move along the first direction. In the elastically deformed state, the connecting member provides a second force to the piston rod in a second direction, which is opposite to the first direction. The proportional valve assembly comprises an electromagnetic valve, and the water heater comprises the proportional valve assembly. According to the invention, the valve can be opened reliably, and the sealing reliability can be improved. Accordingly, the proportional valve assembly and the water heater have the advantages of being easy to open a gas outlet and high in sealing reliability.
Description
Technical Field
The invention relates to the field of gas water heaters, in particular to an electromagnetic valve, a proportional valve assembly and a water heater.
Background
The gas water heater is also called as a gas water heater, and refers to a gas appliance which takes gas as fuel and transfers heat to cold water flowing through a heat exchanger in a combustion heating mode so as to achieve the purpose of preparing hot water.
The basic working principle of the gas water heater is that cold water enters the water heater, flows through the water-gas linkage valve body, pushes the water-gas linkage valve under the action of certain pressure difference of flowing water, simultaneously pushes the direct-current power supply microswitch to switch on the power supply and start the pulse igniter, simultaneously opens the gas transmission electromagnetic valve, and continues to automatically ignite again through the pulse igniter until the ignition is successfully carried out to enter a normal working state. In the process, the electromagnetic coil of the electromagnetic valve is electrified to generate electromagnetic force to pull the piston away from the valve seat, and the valve is opened; when the electromagnetic coil is powered off, the electromagnetic force disappears, and the spring of the electromagnetic valve presses the piston on the valve seat.
However, in the prior art, due to the fact that the electromagnetic valve has the factors of grease adhesion, power supply voltage fluctuation and the like, the situation that the valve cannot be opened or the valve cannot respond timely can occur, and therefore the proportional valve assembly of the water heater cannot work, the ignition of the whole machine fails, further faults are generated, and the normal use of the water heater is affected.
The proportional valve assembly generally includes disk seat and three solenoid valve, and the inside of disk seat has the gas export, and three solenoid valve all can be dismantled and connect in the disk seat, and three solenoid valve all is used for blockking up the gas export. One of the solenoid valves is located on the main passage, and the other two solenoid valves are located on the sub-passage. The section of the closed end face, which is used for being abutted or separated with the electromagnetic valve on the main channel, in the valve seat is smaller, so that the valve seat is not easy to seal, and the normal work of the proportional valve assembly is easily influenced.
In summary, the proportional valve assembly in the prior art has the defects that the valve is not easy to open and the closed end surface on the main channel is not easy to seal.
Disclosure of Invention
The invention aims to overcome the defects that a proportional valve assembly in the prior art is not easy to open and a closed end face on a main channel is not easy to seal, and provides an electromagnetic valve, a proportional valve assembly and a water heater.
The invention solves the technical problems through the following technical scheme:
a solenoid valve, characterized in that it comprises:
an electromagnetic generating section for generating an electromagnetic field;
the piston rod is movably inserted in the electromagnetic generating part;
the elastic piece is used for providing a first acting force along a first direction to the piston rod, and the first direction is the direction in which the piston rod extends out of the electromagnetic generating part;
the connecting piece is arranged at one end, far away from the electromagnetic generating part, of the piston rod and is made of functional materials, and the connecting piece can be switched between an initial state and an elastic deformation state under the action of an external environment;
the limiting piece is arranged at one end, far away from the piston rod, of the connecting piece and used for limiting the piston rod to move along the first direction;
when the connecting piece is in the initial state, the piston rod extends out relative to the electromagnetic generating part under the action of the first acting force;
when the connecting piece is in the elastic deformation state, under the action of the limiting piece, the connecting piece provides a second acting force along a second direction to the piston rod, and the second direction is opposite to the first direction.
In this scheme, when the electromagnetic field exists, provide corresponding external environment and make the connecting piece switch over to the elastic deformation state from initial condition, the locating part can restrict the piston rod and move along first direction for the connecting piece can provide the piston rod second effort comparatively reliably. The second effort is opposite with the effort direction that the elastic component provided the piston rod, and the second effort can provide initial driving force to the piston rod to under the cooperation of second effort and electromagnetic force, can be comparatively reliably with the solenoid valve separately with the outside closed end face, thereby can open the valve comparatively reliably. In addition, for the closed end face with a small cross section size, the limiting piece is connected to the position corresponding to the closed end face, so that the contact area between the electromagnetic valve and the closed end face can be increased to a certain extent, and the sealing reliability is improved. When the electromagnetic valve is used for being in contact with a closed end face with a small section size, the limiting piece is connected to the inner wall face of a structure where the closed end face is located, the limiting piece is used for being abutted against the connecting piece, and the connecting piece does not need to be abutted against the closed end face, so that the matching of the piston rod and the closed end face is not affected.
Preferably, the connecting member is adapted to abut between the end face of the piston rod and the stopper.
Preferably, the limiting member includes a plurality of limiting blocks arranged at intervals along the circumferential direction, and one end of each of the limiting blocks is used for abutting against the connecting member.
In the scheme, the limiting is carried out through the plurality of limiting blocks, so that on one hand, the cost can be reduced, and the overall weight of the electromagnetic valve is reduced; on the other hand, when the limiting blocks are connected to the inner wall surface of the structure where the closed end surfaces are located, compared with the whole annular limiting blocks, the limiting blocks arranged at intervals occupy smaller space, and the passing of gas is not easily influenced.
Preferably, the external environment is electricity and the connector is made of a piezoelectric ceramic.
In this scheme, when the connecting piece circular telegram, piezoceramics can take place mechanical deformation and expand, and expanded connecting piece butt is between locating part and piston rod, and when the position that is connected to the locating part seals the inner wall face of terminal surface place structure, the position of locating part is immovable, and consequently, the connecting piece can provide the effort along the second direction for the piston rod.
Preferably, the piston rod is provided with a wiring hole for passing an electric wire electrically connected between a power source and the connecting member.
In this embodiment, the power supply may be a power supply independent from the solenoid valve, or may be a power supply located inside the solenoid valve.
Preferably, the electromagnetic generating portion includes a coil, the coil is sleeved on the piston rod, and the wire is electrically connected between the coil and the connecting member.
In this scheme, the power of connecting piece comes from the coil in the electromagnetism emergence portion, is convenient for simplify the structure, and can improve the utilization ratio of electric energy.
Preferably, the external environment is temperature and the connector is made of nitinol.
In this scheme, when the temperature of the environment that the connecting piece was located was higher, the connecting piece can produce corresponding deformation to, can provide the effort along the second direction for the piston rod, thereby, when the electromagnetic field exists, be convenient for realize opening of valve.
Preferably, the connecting member, the piston rod and the stopper are coaxially disposed.
Preferably, one end of the piston rod, which is far away from the electromagnetic generating part, is provided with an annular boss, and the elastic piece is sleeved on the piston rod and extends between the electromagnetic generating part and the annular boss;
the cross section of the connecting piece is smaller than that of the annular boss along the direction perpendicular to the axial direction of the piston rod.
Preferably, the connector is a circular tube structure.
In this scheme, set up the connecting piece into circular tube structure, can alleviate the whole weight of solenoid valve, reduce cost, the locating part of also being convenient for simultaneously plays a role.
The invention also provides a proportional valve assembly, which is characterized by comprising the electromagnetic valve, wherein:
when the connecting piece is in the initial state, one end of the piston rod, which is far away from the electromagnetic generating part, blocks a fuel gas outlet of the proportional valve assembly;
when the connecting piece is in the elastic deformation state, a gap for gas to pass through is formed between one end of the piston rod, which is far away from the electromagnetic generating part, and the gas outlet.
Preferably, the proportional valve assembly further comprises a valve seat, the solenoid valve is arranged on the main channel of the proportional valve assembly, a connecting part is arranged inside the valve seat, a containing cavity used as a fuel gas outlet is formed inside the connecting part, and a closed end surface is arranged at one end, facing the solenoid valve, in the connecting part;
the limiting piece is arranged on the inner wall surface of the connecting part;
when the connecting piece is in the initial state, the connecting piece is positioned in the accommodating cavity, and one end of the piston rod, which is far away from the electromagnetic generating part, abuts against the closed end face so as to block a gas outlet of the proportional valve assembly;
when the connecting piece is in the elastic deformation state, one end of the piston rod, which is far away from the electromagnetic generating part, is separated from the closed end face.
In this scheme, the closed end face cross-sectional dimension is less, sets up the locating part at the internal face of connecting portion, and the locating part is used for with connecting piece looks butt, has increased the area of contact of solenoid valve with the disk seat to a certain extent, is favorable to improving the sealing reliability of proportional valve assembly. In addition, the locating part is arranged, so that the existence of the connecting piece does not influence the contact between the piston rod and the closed end face, and the reliability of opening the valve is improved.
The invention also provides a water heater which is characterized by comprising the proportional valve assembly.
The positive progress effects of the invention are as follows:
for the electromagnetic valve, when an electromagnetic field exists, a corresponding external environment is provided, so that the connecting piece is switched from an initial state to an elastic deformation state, the direction of a second acting force provided by the connecting piece for the piston rod is opposite to that of an acting force provided by the elastic piece for the piston rod, and the second acting force can provide an initial pushing force for the piston rod, so that under the matching of the second acting force and the electromagnetic force, the electromagnetic valve can be reliably separated from an external closed end face, and the valve can be reliably opened. In addition, for the closed end face with a small cross section size, the limiting piece is connected to the position corresponding to the closed end face, so that the contact area between the electromagnetic valve and the closed end face can be increased to a certain extent, and the sealing reliability is improved. Accordingly, the proportional valve assembly and the water heater comprising the electromagnetic valve have the advantages of easiness in opening a gas outlet and high sealing reliability.
Drawings
Fig. 1 is a schematic perspective view of a solenoid valve according to embodiment 1 of the present invention, in which a limiting member is not shown.
Fig. 2 is a schematic view of an internal structure of a solenoid valve according to embodiment 1 of the present invention, in which a stopper is not shown.
Fig. 3 is a schematic perspective view of a proportional valve assembly according to embodiment 2 of the present invention.
Fig. 4 is a partial structural schematic diagram of a proportional valve assembly according to embodiment 2 of the present invention.
FIG. 5 is another schematic structural diagram of a portion of a proportional valve assembly according to embodiment 2 of the present invention.
FIG. 6 is a schematic structural diagram of another part of the proportional valve assembly according to embodiment 2 of the present invention.
Description of reference numerals:
10 electromagnetic generating part
20 piston rod
201 wiring hole
202 annular boss
30 elastic member
40 stopper
401 limited block
50 connecting piece
60 proportional valve assembly
601 valve seat
602 first solenoid valve
603 second solenoid valve
604 third solenoid valve
605 connecting part
606 closed end face
Detailed Description
The present invention is further illustrated by way of example and not by way of limitation in the scope of the following examples in connection with the accompanying drawings.
Example 1
The present embodiment discloses a solenoid valve, as shown in fig. 1-2, which includes an electromagnetic generating portion 10, a piston rod 20, an elastic member 30, a connecting member 50, and a limiting member (not shown in fig. 1 and 2, the limiting member will be specifically described in embodiment 2). The electromagnetic generating unit 10 generates an electromagnetic field. The piston rod 20 is movably inserted in the electromagnetic generating portion 10, wherein movably inserted means that the piston rod 20 can be extended and retracted relative to the electromagnetic generating portion. The elastic member 30 is used to provide a first acting force to the piston rod 20 along a first direction, which is a direction in which the piston rod 20 extends out of the electromagnetic generating portion 10. The connecting member 50 is disposed at an end of the piston rod 20 away from the electromagnetic generating portion 10, the connecting member 50 is made of a functional material, and the connecting member 50 can be switched between an initial state and an elastic deformation state by an external environment. A limiter is provided at an end of the connecting member 50 remote from the piston rod 20 for limiting the movement of the piston rod 20 in the first direction.
Wherein, when the connecting member 50 is in the initial state, the piston rod 20 is extended relative to the electromagnetic generating portion 10 under the action of the first acting force. When the connecting member 50 is in the elastic deformation state, the connecting member 50 provides a second acting force to the piston rod 20 in a second direction opposite to the first direction under the action of the limiting member.
In the present embodiment, when the electromagnetic field exists, a corresponding external environment is provided to switch the connecting member 50 from the initial state to the elastic deformation state, and the limiting member can limit the movement of the piston rod 20 along the first direction, so that the connecting member 50 can more reliably provide the second acting force to the piston rod 20. The second acting force is opposite to the acting force provided by the elastic element 30 to the piston rod 20, and the second acting force can provide initial pushing force to the piston rod 20, so that the electromagnetic valve can be reliably separated from the external closed end face under the matching of the second acting force and the electromagnetic force, and the valve can be reliably opened. In addition, for the closed end face with a small cross section size, the limiting piece is connected to the position corresponding to the closed end face, so that the contact area between the electromagnetic valve and the closed end face can be increased to a certain extent, and the sealing reliability is improved. When the electromagnetic valve is used for contacting with a closed end face with a small section size, the limiting piece is connected to the inner wall face of the structure where the closed end face is located, the limiting piece is used for abutting against the connecting piece 50, and the connecting piece 50 does not need to abut against the closed end face, so that the matching of the piston rod 20 and the closed end face is not affected.
The coupling member 50 is adapted to abut between the end face of the piston rod 20 and the stopper. Specifically, the limiting member includes a plurality of limiting blocks arranged at intervals along the circumferential direction, and one ends of the limiting blocks are all used for abutting against the connecting member 50.
On one hand, the cost can be reduced, and the overall weight of the electromagnetic valve is reduced; on the other hand, when the limiting blocks are connected to the inner wall surface of the structure where the closed end surfaces are located, compared with the whole annular limiting blocks, the limiting blocks arranged at intervals occupy smaller space, and the passing of gas is not easily influenced.
It should be noted that the limiting block may also be a closed structure, such as an annular structure. In addition, one of the functions of the limiting block is to limit the movement of the connecting member 50 along the first direction, and in a specific example, the limiting block can be connected to a corresponding position of the outer closed end surface according to actual needs.
In an embodiment, the external environment is electricity and the connector 50 is made of a piezoelectric ceramic.
When the connecting member 50 is powered on, the piezoelectric ceramic may be mechanically deformed and expanded, the expanded connecting member 50 abuts between the limiting member and the piston rod 20, and when the position of the limiting member is connected to the inner wall surface of the structure where the position-closed end surface is located, the position of the limiting member is fixed, so that the connecting member 50 may provide an acting force in the second direction to the piston rod 20.
It should be noted that when the external environment is electricity, the connecting member 50 is not limited to being made of piezoelectric ceramics. In an alternative embodiment, the external environment may be temperature, and in this case, the connecting element 50 may be made of nitinol (nickel titanium alloy) (in this case, when the temperature of the environment in which the connecting element 50 is located is higher, the connecting element 50 is deformed accordingly, so that the piston rod 20 can be provided with a force in the second direction, and thus, when the electromagnetic field exists, the opening of the valve is facilitated).
As will be understood with reference to fig. 1 and 2, the piston rod 20 is provided with a wiring hole 201, and the wiring hole 201 is used to pass an electric wire electrically connected between the power source and the connector 50. The power supply may be a power supply independent from the solenoid valve, or may be a power supply located inside the solenoid valve. Specifically, in the present embodiment, the electromagnetic generating portion 10 includes a coil (not shown) that is fitted over the piston rod 20, and an electric wire is electrically connected between the coil and the connector 50. That is, the power of the connector 50 is supplied from the coil in the electromagnetic generating portion 10, so that the structure is simplified and the utilization rate of the electric power can be improved.
It should be noted that the electromagnetic generating portion 10 is a structure that is widely used in the prior art, and the structural composition of the electromagnetic generating portion 10 is common knowledge to those skilled in the art and will not be described herein again.
The connecting member 50, the piston rod 20 and the stopper are coaxially arranged. The piston rod 20 has an annular boss 202 at an end thereof away from the electromagnetic generating portion 10, and the elastic member 30 is sleeved on the piston rod 20 and extends between the electromagnetic generating portion 10 and the annular boss 202. Wherein the cross-sectional dimension of the coupling member 50 is smaller than the cross-sectional dimension of the annular boss 202 in a direction perpendicular to the axial direction of the piston rod 20.
The connector 50 is of a circular tube configuration. The connecting piece 50 is arranged to be of a circular tube structure, so that the overall weight of the electromagnetic valve can be reduced, the cost is reduced, and meanwhile, the limiting piece is convenient to act.
In the present embodiment, the piston rod 20 is made of a magnetic material, and the piston rod 20 serves as an iron core of the coil, which is advantageous for enhancing the magnetic field strength of the electromagnetic generating portion 10.
Example 2
As shown in fig. 3-6, the present embodiment provides a proportional valve assembly 60, and the proportional valve assembly 60 includes the solenoid valve of embodiment 1. The same reference numerals in this embodiment as those in embodiment 1 denote the same elements. When the connecting member 50 is in the initial state, the end of the piston rod 20 away from the electromagnetic generating portion 10 blocks the gas outlet of the proportional valve assembly 60. When the connecting member 50 is in the elastically deformed state, a gap for allowing gas to pass is formed between one end of the piston rod 20 away from the electromagnetic generating portion 10 and the gas outlet.
As will be understood with continued reference to fig. 3 to 6, the proportional valve assembly 60 further includes a valve seat 601, the solenoid valve is disposed on the main passage of the proportional valve assembly 60, the valve seat 601 has a connecting portion 605 (mainly shown in fig. 4 and 5) inside, a receiving chamber for a gas outlet is formed inside the connecting portion 605, one end of the connecting portion 605 facing the solenoid valve has a closed end surface 606, and the stopper 40 is disposed on an inner wall surface of the connecting portion 605. When the connecting member 50 is in the initial state, the connecting member 50 is located in the accommodating cavity, and one end of the piston rod 20 far away from the electromagnetic generating portion 10 abuts against the closed end surface 606 to block the gas outlet of the proportional valve assembly 60. When the connecting member 50 is in the elastically deformed state, the end of the piston rod 20 away from the electromagnetic generating portion 10 is separated from the closed end surface 606.
In the present embodiment, the cross-sectional dimension of the closed end surface 606 is small, the stopper 40 is provided on the inner wall surface of the connecting portion 605, and the stopper 40 is used to contact with the connector 50, so that the contact area between the solenoid valve and the valve seat 601 is increased to a certain extent, which is advantageous for improving the sealing reliability of the proportional valve assembly 60. In addition, the limiting member 40 is arranged, so that the existence of the connecting member 50 does not influence the contact between the piston rod 20 and the closed end surface, which is beneficial to improving the reliability of the valve opening.
It should be noted that the distance between the limiting block 401 and the closed end surface 606 in the connecting portion 605 may be set according to actual needs. For example, the length of the connecting member 50 extending into the connecting portion 605 may be set as long as the stopper 401 can be ensured to abut against the connecting member 50.
As will be understood with reference to fig. 3, the proportional valve assembly 60 includes a valve seat 601, a first solenoid valve 602, a second solenoid valve 603, and a third solenoid valve 604, each of the first solenoid valve 602, the second solenoid valve 603, and the third solenoid valve 604 being removably connected to the valve seat 601. The interior of the first solenoid valve 602 is used for communicating with the first closed end face of the valve seat 601 through the main passage, the interior of the second solenoid valve 603 is used for communicating with the second closed end face of the valve seat 601 through the first secondary passage, and the interior of the third solenoid valve 604 is used for communicating with the third closed end face of the valve seat 601 through the second secondary passage. The first secondary channel and the second secondary channel are secondary channels formed by proportional valves, and one or two of the first secondary channel and the second secondary channel can be communicated according to actual needs. That is, only one of the valve of the second solenoid valve 603 and the valve of the third solenoid valve 604 needs to be in an open state.
Fig. 6 shows a schematic view of a portion of the proportional valve assembly 60 when the connector 50 is in the initial state. At this time, the annular boss 202 of the piston rod 20 abuts against the closed end surface 606, the connecting member 50 extends into the connecting portion 605, and the connecting member 50 abuts against the stopper 401. At this moment, if the coil is electrified, an electromagnetic field is generated, meanwhile, the piezoelectric ceramic expands under the action of the electric force, under the action of the limiting block 401, the connecting member 50 applies an acting force to the piston rod 20 along the second direction, and under the action of the second acting force and the electromagnetic force, the first acting force applied to the piston rod 20 by the elastic member 30 can be reliably overcome, so that the piston rod 20 can move relative to the electromagnetic generating portion 10 along the second direction, that is, the piston rod 20 retracts relative to the electromagnetic generating portion 10, at this moment, the annular boss 202 of the piston rod 20 is separated from the closed end face, and the connecting member 50 is also separated from the limiting block 401. When de-energized, the piston rod 20 returns to its original state.
As can be understood by referring to fig. 4 and 5, the number of the limiting blocks 401 is four, and the four limiting blocks 401 are uniformly arranged along the circumferential direction, that is, an included angle between any two adjacent limiting blocks 401 is 90 degrees.
In other alternative embodiments, the number of the limiting blocks 401 may be other, such as two, three, five, or more than five, according to actual needs.
The present embodiment also provides a water heater including the above-described proportional valve assembly 60.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be construed as limiting the present invention unless otherwise specified herein.
While specific embodiments of the invention 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 invention 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 invention, and these changes and modifications are within the scope of the invention.
Claims (13)
1. A solenoid valve, characterized in that it comprises:
an electromagnetic generating section for generating an electromagnetic field;
the piston rod is movably inserted in the electromagnetic generating part;
the elastic piece is used for providing a first acting force along a first direction to the piston rod, and the first direction is the direction in which the piston rod extends out of the electromagnetic generating part;
the connecting piece is arranged at one end, far away from the electromagnetic generating part, of the piston rod and is made of functional materials, and the connecting piece can be switched between an initial state and an elastic deformation state under the action of an external environment;
the limiting piece is arranged at one end, far away from the piston rod, of the connecting piece and used for limiting the piston rod to move along the first direction;
when the connecting piece is in the initial state, the piston rod extends out relative to the electromagnetic generating part under the action of the first acting force;
when the connecting piece is in the elastic deformation state, under the action of the limiting piece, the connecting piece provides a second acting force along a second direction to the piston rod, and the second direction is opposite to the first direction.
2. The solenoid valve according to claim 1, characterized in that said connector is adapted to abut between an end face of said piston rod and said stop.
3. The electromagnetic valve according to claim 1, wherein the limiting member comprises a plurality of limiting blocks arranged at intervals in the circumferential direction, and one end of each of the limiting blocks is used for abutting against the connecting member.
4. The solenoid valve according to claim 1, characterized in that said external environment is electric and said connection element is made of piezoceramic.
5. The solenoid valve according to claim 4, wherein said piston rod is provided with a wiring hole for passing an electric wire electrically connected between a power source and said connecting member.
6. The electromagnetic valve according to claim 5, wherein said electromagnetic generating portion includes a coil, said coil is fitted over said piston rod, and said electric wire is electrically connected between said coil and said connecting member.
7. The solenoid valve of claim 1, wherein the external environment is temperature and the connector is made of nitinol.
8. The solenoid valve according to claim 1, wherein said connecting member, said piston rod and said retainer are coaxially disposed.
9. The solenoid valve according to claim 8, wherein an end of said piston rod remote from said solenoid generating portion has an annular boss, said elastic member being fitted over said piston rod and extending between said solenoid generating portion and said annular boss;
the cross section of the connecting piece is smaller than that of the annular boss along the direction perpendicular to the axial direction of the piston rod.
10. The solenoid valve according to any of claims 1-9, wherein said connector is of circular tube construction.
11. A proportional valve assembly, comprising a solenoid valve according to any one of claims 1-10, wherein:
when the connecting piece is in the initial state, one end of the piston rod, which is far away from the electromagnetic generating part, blocks a fuel gas outlet of the proportional valve assembly;
when the connecting piece is in the elastic deformation state, a gap for gas to pass through is formed between one end of the piston rod, which is far away from the electromagnetic generating part, and the gas outlet.
12. The proportional valve assembly of claim 11, further comprising a valve seat, the solenoid valve being provided on the main passage of the proportional valve assembly, the valve seat having a connecting portion inside thereof, the connecting portion having a receiving chamber formed inside thereof for a gas outlet, the connecting portion having a closed end surface at an end thereof facing the solenoid valve;
the limiting piece is arranged on the inner wall surface of the connecting part;
when the connecting piece is in the initial state, the connecting piece is positioned in the accommodating cavity, and one end of the piston rod, which is far away from the electromagnetic generating part, abuts against the closed end face so as to block a gas outlet of the proportional valve assembly;
when the connecting piece is in the elastic deformation state, one end of the piston rod, which is far away from the electromagnetic generating part, is separated from the closed end face.
13. A water heater including a proportioning valve assembly according to claim 11 or 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910609603.4A CN110345299B (en) | 2019-07-08 | 2019-07-08 | Electromagnetic valve, proportional valve assembly and water heater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910609603.4A CN110345299B (en) | 2019-07-08 | 2019-07-08 | Electromagnetic valve, proportional valve assembly and water heater |
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| CN110345299A CN110345299A (en) | 2019-10-18 |
| CN110345299B true CN110345299B (en) | 2020-09-22 |
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| DE102008057415B3 (en) * | 2008-11-14 | 2010-06-17 | Hoerbiger Automatisierungstechnik Holding Gmbh | Machine for processing a workpiece by means of a laser beam |
| CN106016859B (en) * | 2016-07-18 | 2023-02-17 | 苏州恒兆空调节能科技有限公司 | Heat insulation type four-way valve of cooling and heating air conditioner |
| CN207393984U (en) * | 2017-07-26 | 2018-05-22 | 宁波亿林节水科技股份有限公司 | A kind of impulse electromagnetic valve of coil thermal expansion driving |
| CN109723860B (en) * | 2017-10-31 | 2024-04-26 | 芜湖美的厨卫电器制造有限公司 | Electromagnetic valve and water heater |
| CN207740530U (en) * | 2017-12-26 | 2018-08-17 | 宁波亨博电磁技术有限公司 | A kind of solenoid valve |
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2019
- 2019-07-08 CN CN201910609603.4A patent/CN110345299B/en active Active
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