Valve assembly, heat pump system and vehicle

Abstract

The utility model relates to a valve assembly, a heat pump system and a vehicle, the valve assembly comprises a connecting body and a valve component, the connecting body comprises a mounting space, the inner side wall of the mounting space is provided with a mounting surface and a first threaded connecting part, the valve component is at least partially arranged in the mounting space, and the outer side wall of the valve component is provided with a limiting convex rib which is in matched abutting connection with the mounting surface; the pressing nut is arranged on the valve component in a sleeving mode and movably matched with the valve component, a second threaded connection part in threaded connection with the first threaded connection part is arranged on the outer side wall of the pressing nut, and the limiting convex rib is located between the installation face and the pressing nut. The risk that sweeps fall into an internal flow channel of the connecting body can be reduced, and therefore the heat pump system can work stably.

Description

Technical Field

[0001] The present disclosure relates to the technical field of a valve body pressing structure of an electronic expansion valve, and in particular, to a valve assembly, a heat pump system and a vehicle. Background Art

[0002] In the related art, electronic expansion valve assemblies are mainly used in air-conditioning systems, such as automobile air-conditioning systems. During the assembly process of the electronic expansion valve assembly, the clamping nut is sleeved on the lower end of the valve component and fixedly connected to the internal threaded hole of the valve body through a thread, thereby achieving relative fixation of the valve component and the valve body. The clamping nut is a vertical cylinder. Waste chips will be generated during the process of screwing the clamping nut and the internal threaded hole. When disassembling the clamping nut, there is a risk of waste chips falling into the internal flow channel of the valve body, thereby affecting the function of the entire heat pump system. Utility Model Content

[0003] An object of the present disclosure is to provide a valve assembly, a heat pump system and a vehicle, wherein the valve assembly is capable of reducing the risk of waste chips falling into the internal flow channel of the connecting body, so as to at least partially solve the above technical problems.

[0004] In order to achieve the above-mentioned purpose, the first aspect of the present disclosure provides a valve assembly, including: a connecting body, including an installation space, the inner wall of the installation space is provided with a mounting surface and a first threaded connection portion, a valve component, at least partially arranged in the installation space, the outer wall is provided with a limiting rib that abuts against the mounting surface; and a clamping nut, which is sleeved on the valve component and movably cooperates with the valve component, the outer wall is provided with a second threaded connection portion threadedly connected to the first threaded connection portion, wherein the limiting rib is located between the mounting surface and the clamping nut.

[0005] Optionally, the clamping nut is made of the same material as the connecting body.

[0006] Optionally, the clamping nut and the connecting body are both made of aluminum alloy.

[0007] Optionally, the outer side wall of the locking nut further includes an operating portion away from the second threaded connection portion and located outside the installation space.

[0008] Optionally, the operating portion is provided with at least one mating surface arranged along the circumferential direction.

[0009] Optionally, the operating portion is provided with six mating surfaces, and the six mating surfaces are connected end to end to form a hexagon.

[0010] Optionally, a sealing member is provided between the lower surface of the limiting rib and the mounting surface.

[0011] Optionally, an inner end of the mounting surface is provided with a mounting groove for mounting a sealing member.

[0012] Optionally, the connecting body is also provided with an inlet connected to the installation space, the valve component is an expansion valve, the expansion valve includes a valve seat, a valve needle assembly and a valve body, the valve seat, the valve needle assembly and the valve body are arranged in sequence in the installation space along a first direction, and the limiting rib is provided on the valve body.

[0013] A second aspect of the present disclosure provides a heat pump system, comprising the above-mentioned valve assembly.

[0014] A third aspect of the present disclosure provides a vehicle comprising the above-mentioned heat pump system.

[0015] Through the above technical scheme, the valve component is movably engaged in the installation space of the connecting body, and the limiting rib of the valve component abuts against the installation surface in the installation space. At the same time, the clamping nut is sleeved on the valve component and movably engaged with the valve component. The second threaded connection part of the clamping nut and the first threaded connection part in the installation space of the connecting body are threadedly tightened and pressed down, so that the end of the clamping nut away from the operating part abuts against the limiting rib, thereby fixing the valve component and the connecting body and sealingly connecting them. In this way, when disassembling and assembling the clamping nut, the risk of waste chips falling into the internal flow channel of the connecting body can be reduced, so that the heat pump system can work stably.

[0016] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0018] Figure 1 is a schematic diagram of the structure of a valve assembly provided in an exemplary embodiment of the present disclosure;

[0019] Figure 2 is a schematic structural diagram of a compression nut provided in an exemplary embodiment of the present disclosure;

[0020] Figure 3 is a schematic structural diagram of a connection body provided in an exemplary embodiment of the present disclosure;

[0021] Figure 4 Schematic diagram of a cross-sectional structure of a valve assembly provided in an exemplary embodiment of the present disclosure.

[0022] Description of Reference Numerals

[0023] 1-tightening nut; 11-second threaded connection; 12-operating part; 13-matching surface; 2-connecting body; 21-installation space; 22-installation surface; 23-first threaded connection; 24-inlet; 3-valve component; 31-limiting rib; 32-valve seat; 33-valve needle assembly; 34-valve body; 4-seal; 5-installation groove. DETAILED DESCRIPTION

[0024] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0025] In the present disclosure, unless otherwise stated, the directional words used, such as "inside" and "outside", refer to the outline of the corresponding parts themselves. In addition, the terms "first" and "second" used in the present disclosure are to distinguish one element from another element and do not have order and importance. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0026] like Figure 1-Figure 4 As shown, the first aspect of the present disclosure provides a valve assembly, including a clamping nut 1, a connecting body 2 and a valve component 3, the connecting body 2 includes an installation space 21, for example, the installation space 21 can be a through hole or a bottom-closed assembly groove, in this embodiment, the installation space 21 is selected as a through hole, the inner wall of the installation space 21 is provided with a mounting surface 22 and a first threaded connection portion 23, the valve component 3 is at least partially arranged in the installation space 21, and the outer wall is provided with a limiting rib 31 that cooperates and abuts with the mounting surface 22; the clamping nut 1 is sleeved on the valve component 3 and movably cooperates with the valve component 3, and the outer wall is provided with a second threaded connection portion 11 threadedly connected to the first threaded connection portion 23, wherein the limiting rib 31 is located between the mounting surface 22 and the clamping nut 1.

[0027] Through the above technical scheme, the valve component 3 is movably fitted in the installation space 21 of the connecting body 2, and the limiting rib 31 of the valve component 3 abuts against the installation surface 22 in the installation space 21. At the same time, the clamping nut 1 is sleeved between the valve component 3 and the connecting body 2. The tool and the operating part 12 are cooperated to make the second threaded connection part 11 of the clamping nut 1 and the first threaded connection part 23 in the installation space 21 of the connecting body 2 threadedly tighten and press down, so that the end of the clamping nut 1 away from the operating part 12 abuts against the limiting rib 31, so that the valve component 3 and the connecting body 2 are fixed and sealed. In this way, when disassembling and assembling the clamping nut 1, the risk of waste chips falling into the internal flow channel of the connecting body 2 can be reduced, so that the heat pump system can work stably.

[0028] It should be noted that the connection body 2 is usually made of aluminum, and the clamping nut or valve body is generally made of steel. Since the hardness of steel is greater than that of aluminum, during the process of threading, the hard steel will cut the soft aluminum, thereby generating aluminum chips. In order to avoid the generation of debris caused by the mutual cutting of the clamping nut 1 and the connection body 2 during the threading due to different materials, in some practicable methods, the clamping nut 1 and the connection body 2 are made of the same material, for example, the clamping nut 1 and the connection body 2 are both made of aluminum alloy, so that both the clamping nut 1 and the connection body 2 use aluminum alloy, and the hardness of the two is consistent, thereby avoiding the generation of debris caused by the softer material being cut due to different hardness during the thread cutting process. During the thread disassembly process, if the debris falls into the internal flow channel of the connection body 2, it will affect the function of the entire heat pump system.

[0029] In order to facilitate the adjustment and disassembly of the clamping nut 1, in some feasible embodiments, the outer wall of the clamping nut 1 also includes an operating portion 12 that is away from the second threaded connection portion 11 and located outside the installation space 21, thereby increasing the operating space of the clamping nut 1. When the clamping nut 1 needs to be disassembled, a tool can be used to cooperate with the operating portion 12 located outside the installation space 21, and the tool can be rotated forward or reversed to tighten or loosen the clamping nut 1.

[0030] In addition, in order to further facilitate the adjustment and disassembly of the clamping nut 1, in some feasible embodiments, the operating part 12 is provided with at least one mating surface 13 arranged along the circumferential direction. In this way, the operating part 12 can be cooperated with commonly used tools such as pipe clamps and wrenches, so that the operating part 12 of the clamping nut 1 as a whole is used as the force-bearing part, and the screwing in or out of the clamping nut 1 is adjusted, so that the clamping nut 1 can be tightened to fix or loosen the connecting body 2 and the valve component 3.

[0031] In addition, in order to further facilitate the adjustment and disassembly of the clamping nut 1, in some feasible embodiments, the operating portion 12 is provided with six mating surfaces 13, and the six mating surfaces 13 are connected end to end to form a hexagonal shape, so that the clamping nut 1 can be rotated with a conventional hexagonal wrench.

[0032] Of course, the above-mentioned hexagonal structure of the operating portion 12 is only for illustration, and in some practicable embodiments, the operating portion 12 may also be a quadrangle.

[0033] In order to facilitate the sealed connection between the valve component 3 and the connecting body 2, in some feasible embodiments, a seal 4 is further provided between the lower surface of the limiting rib 31 and the mounting surface 22. For example, a mounting groove 5 for installing the seal 4 can be provided on the mounting surface 22. The seal 4 can be an annular rubber pad, so that when the clamping nut 1 is rotated and pressed downward, the limiting rib 31 presses the annular rubber pad to form a seal with the mounting surface 22.

[0034] In addition, in order to prevent debris from flowing into the flow channel of the connecting body 2 when the clamping nut 1 is disassembled, in some feasible embodiments, an installation groove 5 for installing the seal 4 is provided at the inner end of the installation surface 22, and the inner side refers to the side close to the central axis of the installation space 21 and the side away from the central axis of the installation space 21. When the clamping nut 1 is disassembled, the sealing member 4 blocks the passage between the clamping nut 1 and the connecting body 2 and the flow channel, so that the debris generated by the thread cutting of the clamping nut 1 and the connecting body 2 will be blocked by the sealing member 4, thereby preventing the debris from directly entering the flow channel and affecting the normal operation of the valve assembly.

[0035] It can be understood that the connection body 2 is also provided with an inlet 24 connected to the installation space 21, the valve component 3 is an expansion valve, and the expansion valve includes a valve seat 32, a valve needle assembly 33 and a valve body 34. The valve seat 32, the valve needle assembly 33 and the valve body 34 are sequentially arranged in the installation space 21 along the first direction, and the limiting rib 31 is provided on the valve body 34. The limiting rib 31 abuts on the installation surface 22 and is tightened by the clamping nut 1 to fix the valve body 34 in the installation space 21 of the connection body 2. The first direction can be referred to Figure 4 The vertical upward direction, Figure 4 The direction of the arrow in the figure refers to the flow direction of the medium. The medium enters the connection body 2 through the inlet 24 and flows out through the gap between the valve needle assembly 33 and the valve seat 32 and flows out through the valve port of the valve seat 32.

[0036] The second aspect of the present disclosure provides a heat pump system, including the above-mentioned valve assembly. The valve component 3 and the connecting body 2 can be relatively fixed by the clamping nut 1 in the valve assembly, and the clamping nut 1 is sleeved on the outer periphery of the valve component 3 and cooperated with the operating part 12 through a tool so that the connecting part of the clamping nut 1 is rotated to make the limiting rib 31 of the valve component 3 abut against the mounting surface 22 of the connecting body 2. In this way, the valve component 3 and the connecting body 2 can be fixed by the clamping nut 1 without setting a special installation tool, thereby facilitating the installation of the valve assembly in the heat pump system. It can be understood that the above-mentioned heat pump system also includes other necessary components, such as a compressor, a heat exchanger, an evaporator and a condenser.

[0037] The third aspect of the present disclosure provides a vehicle, including the above-mentioned heat pump system. The vehicle may include a new energy vehicle or a hybrid vehicle, and the valve component 3 and the connecting body 2 are fixed by the above-mentioned clamping nut 1 to facilitate the installation of the valve assembly in the heat pump system. It is understood that the above-mentioned vehicle includes all the beneficial effects of the heat pump system, which will not be repeated here.

[0038] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0039] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0040] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A valve assembly, characterized in that: include: The connecting body comprises an installation space, wherein the inner side wall of the installation space is provided with an installation surface and a first threaded connection portion, A valve component is at least partially disposed in the installation space, and an outer side wall is provided with a limiting rib that abuts against the installation surface; and A compression nut is sleeved on the valve component and movably cooperates with the valve component, and an outer wall thereof is provided with a second threaded connection portion threadedly connected to the first threaded connection portion; Wherein, the limiting rib is located between the mounting surface and the clamping nut.

2. The valve assembly according to claim 1, characterized in that The compression nut is made of the same material as the connecting body.

3. The valve assembly according to claim 2, characterized in that The clamping nut and the connecting body are both made of aluminum alloy.

4. The valve assembly according to any one of claims 1 to 3, characterized in that: The outer side wall of the compression nut further includes an operating portion which is away from the second threaded connection portion and located outside the installation space.

5. The valve assembly according to claim 4, characterized in that The operating portion is provided with at least one matching surface arranged along the circumferential direction.

6. The valve assembly according to claim 5, characterized in that The operating portion is provided with six matching surfaces, and the six matching surfaces are connected end to end to form a hexagon.

7. The valve assembly according to claim 1, characterized in that A sealing member is also provided between the lower surface of the limiting convex rib and the mounting surface.

8. The valve assembly according to claim 7, characterized in that The inner end of the mounting surface is provided with a mounting groove for mounting a sealing member.

9. The valve assembly according to claim 1, characterized in that The valve component is an expansion valve, which includes a valve seat, a valve needle assembly and a valve body. The valve seat, the valve needle assembly and the valve body are arranged in sequence in the installation space along a first direction, and the limiting rib is provided on the valve body.

10. A heat pump system, characterized in that: A valve assembly comprising any one of claims 1-9.

11. A vehicle, characterized in that: A heat pump system comprising the heat pump system of claim 10.

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