Two-way electromagnetic valve structure with heating and anti-freezing

Abstract

The utility model relates to solenoid valve technical field especially relates to a kind of heating anti-freezing two-way solenoid valve structure, comprising: valve body and the magnetic isolation pipe, moving iron core assembly and static iron core assembly being set to the inside of valve body;One-way diaphragm, one-way diaphragm is set at moving iron core assembly, limit medium in valve body to enter the inside of magnetic isolation pipe;Heating assembly, heating assembly is set on valve body, heating assembly is heated to valve body when energization.Heat valve body by heating assembly when freezing cannot act in solenoid valve interior, make valve body air nozzle frozen place quickly ice thawing, restore solenoid valve action performance, also can make heating assembly to valve body heating, prevent valve body air nozzle freezing, by setting one-way diaphragm to isolate valve cavity and magnetic isolation pipe, make valve body air nozzle place medium unable to enter the inside of moving iron core assembly and static iron core assembly at magnetic isolation pipe, avoid the freezing of moving and static iron core in magnetic isolation pipe assembly due to low-temperature medium water vapor problem.

Description

Technical Field

[0001] This utility model relates to the field of solenoid valve technology, and in particular to a two-way solenoid valve structure with heating and anti-freezing. Background Technology

[0002] A typical direct-acting, normally closed, two-way solenoid valve consists of a magnetically shielded tube stationary iron core assembly, a moving iron core assembly, a coil assembly, and a valve body. This design ensures that both air ports close when the solenoid valve is de-energized and open when energized. This type of solenoid valve is used for general applications to control the flow of air.

[0003] The two-position normally closed solenoid valve used for hydrogen discharge in hydrogen fuel cell systems is used to discharge water and mixed gas on the anode side during hydrogen fuel cell operation due to electrochemical reactions, which reduces the hydrogen concentration. The two-position normally closed solenoid valve opens in a timely manner to discharge some of the water and mixed gas, maintain a stable hydrogen concentration, and ensure the conversion efficiency of the fuel cell stack.

[0004] When high-pressure hydrogen is operating in a hydrogen fuel cell, the gas pressure drops rapidly due to changes in valve opening. During the adiabatic expansion of the gas, the temperature decreases, which can cause the hydrogen temperature at the outlet of the hydrogen discharge valve to drop below the freezing point. This causes surrounding moisture to condense into ice. Generally, two-way direct-acting solenoid valves are prone to freezing inside when used in this environment, preventing the solenoid valve from energizing the moving iron core assembly and causing the solenoid valve's switching function to fail.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the general background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0006] This invention provides a two-way solenoid valve structure with heating and anti-freezing, thereby effectively solving the problems in the background art.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is: a two-way solenoid valve structure with heating and anti-freezing features, comprising:

[0008] Valve body and magnetic shielding tube, moving iron core assembly and stationary iron core assembly disposed inside the valve body;

[0009] A one-way diaphragm is disposed at the moving iron core assembly to restrict the medium in the valve cavity from entering the magnetic shielding tube;

[0010] A heating component is disposed on the valve body, and the heating component heats the valve body when energized.

[0011] Furthermore, the heating assembly includes:

[0012] A heating element is disposed on the valve body;

[0013] A plug assembly electrically connected to the heating element and extending out of the valve body.

[0014] Furthermore, a valve body cover is provided outside the heating component, and the valve body and the heating component are disposed outside the valve body cover.

[0015] Furthermore, insulation cotton is provided between the valve body cover and the heating element.

[0016] Furthermore, the heating element is a PTC heating element.

[0017] Furthermore, the moving iron core assembly includes:

[0018] The first part is disposed inside the magnetic shielding tube and cooperates with the stationary iron core assembly;

[0019] The second part is fixedly connected to the first part and extends into the valve cavity of the valve body for controlling the on / off state of the solenoid valve. The diameter of the second part is smaller than that of the first part, and the one-way diaphragm is disposed at the second part.

[0020] Furthermore, the second part passes through the one-way diaphragm, which seals the outer wall of the second part. The one-way diaphragm also adheres to the magnetic shielding tube to seal the magnetic shielding tube.

[0021] Furthermore, the unidirectional diaphragm has a V-ring structure at the second part of the mating area.

[0022] Furthermore, the opening of the V-ring structure faces one end into the valve cavity.

[0023] Furthermore, a baffle is provided on the magnetic shielding tube, and the baffle is located at the end of the one-way diaphragm away from the valve cavity, restricting the deformation of the one-way diaphragm towards the end away from the valve cavity.

[0024] The beneficial effects of this utility model are as follows: By setting a heating component on the valve body, when the solenoid valve freezes and cannot operate, the heating component can quickly heat up the valve body, causing the frozen part of the valve body nozzle to thaw rapidly and restore the solenoid valve's operating performance. The heating component can also heat the valve body to prevent the valve body nozzle from freezing. By setting a one-way diaphragm to isolate the valve cavity from the magnetic shielding tube, the medium at the valve body nozzle cannot enter the moving iron core assembly and stationary iron core assembly inside the magnetic shielding tube, thus avoiding freezing of the moving and stationary iron cores inside the magnetic shielding tube assembly due to low-temperature medium moisture. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a cross-sectional view of the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of this utility model;

[0028] Figure 3 for Figure 2 The structural diagram of the cover is hidden in the middle;

[0029] Figure 4 To be perpendicular to Figure 1 A sectional view along the sectional direction;

[0030] Figure 5 for Figure 1 Cross-sectional view of the moving iron core assembly and unidirectional diaphragm section;

[0031] Figure 6 This is a schematic diagram of a unidirectional diaphragm. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0033] like Figures 1 to 6 As shown: A two-way solenoid valve structure with heating and anti-freezing features, comprising:

[0034] Valve body 1 and magnetic shielding tube 11, moving iron core assembly 12 and stationary iron core assembly 13 disposed inside valve body 1;

[0035] One-way diaphragm 2 is disposed at the moving iron core assembly 12 to restrict the medium in the valve cavity from entering the magnetic shielding tube 11;

[0036] Heating component 3 is disposed on valve body 1, and heating component 3 heats valve body 1 when energized.

[0037] By installing a heating component 3 on the valve body 1, when the solenoid valve freezes and cannot operate, the heating component 3 can quickly heat up the valve body 1, rapidly thawing the frozen part of the valve body 1's nozzle and restoring the solenoid valve's operating performance. Alternatively, the heating component 3 can heat the valve body 1 to prevent the valve body 1's nozzle from freezing. By installing a one-way diaphragm 2 to isolate the valve cavity from the magnetic shielding tube 11, the medium at the valve body 1's nozzle cannot enter the moving iron core assembly 12 and the stationary iron core assembly 13 inside the magnetic shielding tube 11, thus preventing the moving and stationary iron cores inside the magnetic shielding tube 11 from freezing due to low-temperature medium moisture.

[0038] In this embodiment, the heating component 3 includes:

[0039] Heating element 31 is disposed on valve body 1;

[0040] The plug assembly 32 is electrically connected to the heating element 31 and extends out of the valve body 1.

[0041] Heating elements 31 can be installed on both sides of the air nozzle of the valve body 1 to achieve the effect of rapid heating and ice breaking at the air nozzle, thereby relieving the freezing of the air outlet of the solenoid valve. The power supply for the heating elements 31 is led out from the plug assembly 32, and the plug assembly 32 can be configured with the plug type as needed.

[0042] The heating component 3 is provided with a valve body 1 cover 33, and the valve body 1 and the heating component 3 are located outside the valve body 1 cover 33.

[0043] As a preferred embodiment of the above, a heat insulation cotton 34 is provided between the valve body 1 cover 33 and the heating element 31.

[0044] Among them, heating element 31 is PTC heating element 31.

[0045] The valve body 1 of the solenoid valve has slots on both sides of the air nozzle to place PTC aluminum shell heating elements 31, and then a layer of heat insulation cotton 34 is covered on the surface of the heating elements 31. The heating elements 31 assembly is then protected by a cover 33. The cover 33 has a PTC heating element 31 outlet and a wire protection sleeve is installed. The cover 33 is fixed to the valve body 1 with screws, which can quickly heat up the valve body 1 to break the ice and relieve the freezing of the air outlet of the solenoid valve.

[0046] In this embodiment, the moving iron core assembly 12 includes:

[0047] The first part 121 is disposed inside the magnetic shielding tube 11 and cooperates with the stationary iron core assembly 13.

[0048] The second part 122 is fixedly connected to the first part 121. The second part 122 extends to the valve cavity inside the valve body 1 and is used to control the on / off state of the solenoid valve. The diameter of the second part 122 is smaller than that of the first part 121. The one-way diaphragm 2 is disposed at the second part 122.

[0049] By setting the moving iron core assembly 12 as a split structure, the first part 121 is set inside the magnetic shielding tube 11 and cooperates with the stationary iron core assembly 13. The second part 122 is fixedly connected to the first part 121 and extends to the valve cavity inside the valve body 1 to control the on and off of the solenoid valve. The one-way diaphragm 2 is set at the second part 122. The one-way diaphragm 2 divides the moving iron core into a suction action part and a sealing action part to prevent low-temperature water vapor in the gas medium from entering the iron core suction area and causing other effects.

[0050] The second part 122 passes through the one-way diaphragm 2, which seals the outer wall of the second part 122. The one-way diaphragm 2 also fits into the magnetic shielding tube 11 to seal the magnetic shielding tube 11.

[0051] As a preferred embodiment of the above, the unidirectional diaphragm 2 is provided with a V-ring structure 21 at the mating point of the second part 122.

[0052] The opening of the V-ring structure 21 faces one end into the valve cavity.

[0053] The inner wall of the diaphragm's central hole is designed with sealing ribs to seal against the moving iron core rod. A V-ring structure is designed on the outer side of the diaphragm's central hole. When the solenoid valve opens, the air pressure enhances the sealing force of the V-ring seal against the moving iron core rod, improving sealing performance. The solenoid valve operates by lifting the moving iron core when it is turned on and releasing it when it is turned off. This cyclical movement of the moving iron core causes some wear on the inner wall of the one-way isolating diaphragm. The one-way V-ring design provides some compensation, increasing sealing reliability and significantly extending service life.

[0054] As a preferred embodiment of the above, a baffle 22 is provided on the magnetic shielding tube 11. The baffle 22 is located at the end of the one-way diaphragm 2 away from the valve cavity, which restricts the deformation of the one-way diaphragm 2 towards the end away from the valve cavity.

[0055] The one-way diaphragm 2 is designed to fit closely to the inner wall of the magnetic shielding tube 11, and a baffle 22 is set above the one-way diaphragm 2 to limit the diaphragm from stretching deformation due to air pressure impact when the solenoid valve is opened.

[0056] In this embodiment, the two normally closed solenoid valves use a one-way diaphragm 2 to isolate the moving iron core into two parts, preventing water vapor from entering the magnetic shielding tube 11 and the stationary iron core and causing freezing. A PTC aluminum shell heating element 31 is installed on the valve body 1. If the gas nozzle of the valve body 1 freezes due to low-temperature water vapor, it can be quickly heated and thawed by the PTC heating element 31, so that the solenoid valve can work normally in a low-temperature water vapor environment.

[0057] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A two-way solenoid valve structure with heating and anti-freezing features, characterized in that, include: Valve body and magnetic shielding tube, moving iron core assembly and stationary iron core assembly disposed inside the valve body; A one-way diaphragm is disposed at the moving iron core assembly to restrict the medium in the valve cavity from entering the magnetic shielding tube; A heating component is disposed on the valve body, and the heating component heats the valve body when energized.

2. The two-way solenoid valve structure with heating and anti-freezing as described in claim 1, characterized in that, The heating component includes: A heating element is disposed on the valve body; A plug assembly electrically connected to the heating element and extending out of the valve body.

3. The structure of the two-way solenoid valve with heating and anti-freezing as described in claim 2, characterized in that, A valve body cover is provided outside the heating component, and the valve body and the heating component are disposed outside the valve body cover.

4. The structure of the two-way solenoid valve with heating and anti-freezing as described in claim 3, characterized in that, Insulating cotton is provided between the valve body cover and the heating element.

5. The structure of the two-way solenoid valve with heating and anti-freezing according to claim 2, characterized in that, The heating element is a PTC heating element.

6. The structure of the two-way solenoid valve with heating and anti-freezing according to claim 1, characterized in that, The moving iron core assembly includes: The first part is disposed inside the magnetic shielding tube and cooperates with the stationary iron core assembly; The second part is fixedly connected to the first part and extends into the valve cavity of the valve body for controlling the on / off state of the solenoid valve. The diameter of the second part is smaller than that of the first part, and the one-way diaphragm is disposed at the second part.

7. The structure of the two-way solenoid valve with heating and anti-freezing according to claim 6, characterized in that, The second part passes through the one-way diaphragm, which seals the outer wall of the second part. The one-way diaphragm also fits into the magnetic shielding tube to seal the magnetic shielding tube.

8. The structure of the two-way solenoid valve with heating and anti-freezing according to claim 6, characterized in that, The unidirectional diaphragm has a V-shaped ring structure at the second part of the mating area.

9. The structure of the two-way solenoid valve with heating and anti-freezing according to claim 8, characterized in that, The opening of the V-ring structure faces one end into the valve cavity.

10. The structure of the two-way solenoid valve with heating and anti-freezing according to claim 1, characterized in that, A baffle is provided on the magnetic shielding tube. The baffle is located at the end of the one-way diaphragm away from the valve cavity, which restricts the deformation of the one-way diaphragm towards the end away from the valve cavity.

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