An electromagnetic thermal expansion valve and valve body thereof

Abstract

The utility model discloses an electromagnetic thermal expansion valve and a valve body thereof, wherein the valve body has a first interface and a second interface, the first interface and the second interface are connected through a valve cavity, and the valve body is also provided with a first groove and / or a second groove for installing a sealing ring, wherein the first groove is coaxially arranged with the first interface, and the second groove is coaxially arranged with the second interface. The utility model provides a valve body of an electromagnetic thermal expansion valve, which forms an axial plane seal by adding a first groove and / or a second groove for installing an O-ring outside the original radial sealing interface, which can be combined with a radial seal to meet the airtightness requirements of new energy projects, increase the sealing level and improve stability and reliability.

Description

Technical Field

[0001] The utility model relates to the technical field of expansion valves, and more specifically to an electromagnetic thermal expansion valve and a valve body thereof. Background Art

[0002] In recent years, with the continuous development of automobile technology, automobile air conditioning systems have attracted much attention as an important part of comfort and energy efficiency. However, the connection method between the traditional air conditioning electromagnetic thermal expansion valve and the pipeline side faces some challenges. With the rise of new energy vehicle projects, the requirements for the air tightness of automobile air conditioning systems have become more and more stringent. In order to meet this challenge, it is considered to introduce a double O seal structure in the existing radial seal method. Specifically, combined with the attached Figure 1 and Figure 2 As shown, an additional O-ring is added to the front end of the existing O-ring to improve the sealing performance. However, this structure requires adding an O-ring to the front and back of the valve body, thereby increasing the thickness of the valve body and also increasing the weight of the product. This is contrary to the company's trend of reducing costs and reducing weight in the industry, and the design solution needs to be rethought, so this application is specially filed. Summary of the invention

[0003] The utility model aims to solve one of the technical problems in the related art to a certain extent. To this end, the utility model proposes an electromagnetic thermal expansion valve body, which forms an axial plane seal by adding a first groove and / or a second groove for installing an O-ring outside the original radial sealing interface, which can be combined with the radial seal to meet the airtightness requirements of new energy projects, increase the sealing level and improve stability and reliability.

[0004] The utility model also provides an electromagnetic thermal expansion valve with the valve body.

[0005] The technical solution adopted by the utility model is: to provide a valve body, the valve body has a first interface and a second interface, the first interface and the second interface are connected through a valve cavity, the valve body is also provided with a first groove and / or a second groove for installing a sealing ring, wherein the first groove is coaxially arranged with the first interface, and the second groove is coaxially arranged with the second interface.

[0006] After adopting the above structure, the utility model has the following advantages:

[0007] 1. The utility model forms an axial plane seal by adding a first groove and / or a second groove outside the original radial sealing interface and installing an O-ring. This effectively improves the sealing performance of the valve body. This innovative design meets the end face sealing requirements and improves the overall performance and reliability.

[0008] 2. In the present invention, the first groove and / or the second groove can not only be used alone, but also can be combined with the radial sealing method to further improve the sealing effect. By using both radial and axial sealing methods, we can better meet the higher airtightness requirements of new energy projects. The advantage of this comprehensive application is that it can not only increase the sealing level to a certain extent, but also improve the stability and reliability of the sealing performance.

[0009] According to an embodiment of the utility model, one end of the valve body is provided with an end surface groove for mounting a power head component; the power head component is used to control the opening and closing of the valve by sensing the pressure changes in the system. When the pressure and temperature on the evaporator side change, the power head component will sense these changes and adjust the position of the valve accordingly to ensure that the appropriate refrigerant flow is maintained under different load conditions.

[0010] According to one embodiment of the utility model, the power head component is a sensing conversion element that converts temperature changes into volume changes, which is composed of a stainless steel expansion diaphragm box, an elastic diaphragm and a top plate; a special expansion material is installed in the expansion diaphragm box, which expands when heated and contracts when the temperature drops. The elastic diaphragm is used to transmit the changes of the expansion diaphragm box to the operating mechanism of the valve, thereby realizing the opening and closing of the valve. The top plate plays the role of closing and fixing the expansion diaphragm box to ensure its normal operation. The design of the entire power head component enables the thermal expansion valve to accurately respond to temperature changes and control the flow of fluid.

[0011] According to an embodiment of the utility model, the closed interior of the expansion membrane box is filled with a temperature-sensitive pressure conversion fluid.

[0012] According to an embodiment of the utility model, a ejector pin is provided in the valve cavity, and one end of the ejector pin is connected to the power head component; through the sensing conversion function of the power head component, the ejector pin can be affected by temperature changes to push the valve to open and close, so as to adjust the flow rate of the medium.

[0013] According to an embodiment of the present utility model, the first interface and the second interface are both located on one side of the valve body.

[0014] According to an embodiment of the present utility model, a third interface and a fourth interface are provided on the other side of the valve body, and the other side is perpendicular to the side where the first interface is located.

[0015] According to an embodiment of the utility model, a third interface and a fourth interface are provided on the other side of the valve body, and this side is parallel to the side where the first interface is located, that is, the valve body is the valve body of an H-type thermal expansion valve.

[0016] According to an embodiment of the present utility model, a third groove is provided at the mouth of the third interface.

[0017] According to an embodiment of the utility model, a fourth groove is provided at the mouth of the fourth interface.

[0018] An electromagnetic thermal expansion valve comprises an electromagnetic control mechanism and any of the valve bodies described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a three-dimensional diagram of the valve body in the background technology;

[0021] Figure 2 is a cross-sectional view of a valve body in the background technology;

[0022] Figure 3 This is a schematic diagram of the structure of the electromagnetic thermal expansion valve in the embodiment of the utility model;

[0023] Figure 4 A cross-sectional view of an electromagnetic thermal expansion valve in an embodiment of the utility model;

[0024] Figure 5 A side view of one side of the valve body in the embodiment of the utility model;

[0025] Figure 6 for Figure 5 Sectional view along line AA;

[0026] Figure 7 It is a side view of the other side of the valve body in the embodiment of the utility model;

[0027] Figure 8 for Figure 7 Sectional view along line BB.

[0028] Description of the numbers in the figure:

[0029] 1. Valve body; 2. Electromagnetic control mechanism; 3. Ejector pin; 4. Power head component; 5. Ejector sleeve; 6. Adjustment cap; 7. Valve core seat; 8. Valve core; 9. Spring;

[0030] 11. first interface; 12. second interface; 13. third interface; 14. fourth interface; 15. first groove; 16. second groove; 17. valve cavity; 18. end surface groove;

[0031] 13a, third groove; 14a, fourth groove;

[0032] 41. Expansion membrane box; 42. Elastic diaphragm; 43. Top plate. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention. Embodiment 1

[0034] like Figure 3-8 As shown, in this embodiment, a valve body 1 of a thermal expansion valve is disclosed, wherein the valve body 1 has a first interface 11 and a second interface 12, wherein the first interface 11 and the second interface 12 are connected via a valve cavity 17, and the valve body 1 is further provided with a first groove 15 and / or a second groove 16 for installing a sealing ring, wherein the first groove 15 is coaxially arranged with the first interface 11, and the second groove 16 is coaxially arranged with the second interface 12.

[0035] Combination Figure 3 As shown, in this embodiment, the valve body 1 is a valve body 1 of a thermal expansion valve. The valve body 1 has four interfaces connected to the refrigeration system, one of which is connected to the condenser, one is connected to the evaporator inlet, one is connected to the evaporator outlet, and one is connected to the compressor inlet.

[0036] Furthermore, in this embodiment, the four interfaces on the valve body 1 are respectively a first interface 11, a second interface 12, a third interface 13 and a fourth interface 14, wherein the first interface 11 is a liquid inlet connected to the evaporator inlet, the second interface 12 is an air outlet connected to the evaporator outlet, the third interface 13 is a liquid outlet connected to the condenser, and the fourth interface 14 is an air inlet connected to the compressor.

[0037] Specifically, one end of the valve body 1 is provided with an end surface groove 18 for mounting the power head component 4, and the other end is connected with an adjustment cap 6, and a valve core 8, a valve core seat 7 and a spring 9 are provided between the adjustment cap 6 and the valve cavity 17; the power head component 4 is used to control the opening and closing of the valve by sensing the pressure changes in the system. When the pressure and temperature on the evaporator side change, the power head component 4 will sense these changes and adjust the position of the valve accordingly to ensure that the appropriate refrigerant flow is maintained under different load conditions.

[0038] Specifically, combined Figure 4As shown, the power head component 4 is a sensing conversion element that converts temperature changes into volume changes, which is composed of a stainless steel expansion membrane box 41, an elastic diaphragm 42 and a top plate 43; the expansion membrane box 41 is filled with a special expansion material, which expands when heated and contracts when the temperature drops. The elastic diaphragm 42 is used to transmit the changes of the expansion membrane box 41 to the operating mechanism of the valve, thereby realizing the opening and closing of the valve. The top plate 43 serves to seal and fix the expansion membrane box 41 to ensure its normal operation. The design of the entire power head component 4 enables the thermal expansion valve to accurately respond to temperature changes and control the flow of fluid. The closed interior of the expansion membrane box 41 is filled with a temperature-sensitive pressure conversion fluid.

[0039] Specifically, the valve cavity 17 is provided with an ejector pin 3, one end of which is connected to the power head component 4, and an ejector sleeve 5 is installed in the end surface groove 18, and a part of the ejector sleeve 5 extends into the valve cavity 17. One end of the ejector pin 3 away from the power head component 4 passes through the ejector sleeve 5 and extends into the valve cavity 17, and abuts against the valve core 8. The spring 9 has an elastic tendency to keep the valve core 8 against the ejector pin 3.

[0040] Specifically, combined Figure 7-8 As shown, the first interface 11 and the second interface 12 are both located on one side of the valve body 1. The other side of the valve body 1 is provided with a third interface 13 and a fourth interface 14, and this side is perpendicular to the side where the first interface 11 is located. The mouth of the third interface 13 is provided with a third groove 13a, and the mouth of the fourth interface 14 is provided with a fourth groove 14a.

[0041] Furthermore, in this embodiment, the first groove 15 and the second groove 16 are annular grooves, and the inner diameter of the annular groove is greater than the maximum outer diameter of the first interface 11 and / or the second interface 12. The third groove 13a and the fourth groove 14a are step grooves, that is, the traditional third interface 13 and the fourth interface 14 are two-stage step grooves, which have two step holes with different inner diameters. In this embodiment, the third groove 13a and the fourth groove 14a are three-stage step grooves, which have three step holes with different inner diameters, and the step surface located inside can be installed with an O-ring for radial sealing, and the step surface located on the surface can be installed with an O-ring for axial plane sealing.

[0042] In other embodiments, the first interface 11 and the second interface 12 are both located on one side of the valve body 1. A third interface 13 and a fourth interface 14 are provided on the other side of the valve body 1, and the other side is parallel to the side where the first interface 11 is located.

[0043] In another embodiment, an electromagnetic thermal expansion valve is disclosed, including an electromagnetic control mechanism 2 and the valve body 1 described in this embodiment.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0049] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A valve body, characterized in that: The valve body has a first interface and a second interface, the first interface and the second interface are connected through a valve cavity, and the valve body is also provided with a first groove and / or a second groove for installing a sealing ring, wherein the first groove is coaxially arranged with the first interface, and the second groove is coaxially arranged with the second interface.

2. A valve body according to claim 1, characterized in that: One end of the valve body is provided with an end surface groove for installing a power head component.

3. A valve body according to claim 2, characterized in that: The power head component is a sensing conversion element composed of a stainless steel expansion membrane box, an elastic membrane and a top plate, which converts temperature changes into volume changes.

4. A valve body according to claim 3, characterized in that: The enclosed interior of the expansion membrane box is filled with a temperature-sensitive pressure conversion fluid.

5. A valve body according to claim 2, characterized in that: A ejector pin is arranged in the valve cavity, and one end of the ejector pin is connected to the power head component.

6. A valve body according to claim 1, characterized in that: The first interface and the second interface are both located on one side of the valve body.

7. A valve body according to claim 6, characterized in that: The other side of the valve body is provided with a third interface and a fourth interface, and this side is perpendicular or parallel to the side where the first interface is located.

8. A valve body according to claim 7, characterized in that: A third groove is provided at the mouth of the third interface.

9. A valve body according to claim 7, characterized in that: A fourth groove is provided at the mouth of the fourth interface.

10. An electromagnetic thermal expansion valve, characterized in that: It comprises an electromagnetic control mechanism and a valve body as described in any one of claims 1-9.

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