Valve assembly and four-way valve with same

Abstract

The invention provides a valve assembly and a four-way valve with the same. The valve assembly comprises a guide valve part, a valve rod part and a valve rod part, the coil part is mounted at one end of the pilot valve part in a sleeving manner; the first fixing part is arranged on the coil part, and the first fixing part is connected with a main valve part of the four-way valve. According to the scheme, the problem that in the working process of the four-way valve in the prior art, the coil part vibrates to drive the pilot valve part to vibrate, and consequently the pilot valve part is prone to loosening or a capillary tube is prone to breakage can be solved.

Description

Technical Field

[0001] This invention relates to the field of valve technology, and more specifically, to a valve assembly and a four-way valve having the same. Background Technology

[0002] A four-way valve typically includes a main valve section, a pilot valve section, a capillary tube, and a coil section. The pilot valve section is located on the main valve section, and the pilot valve section and the main valve section are connected through the capillary tube. The coil section is located on the pilot valve section.

[0003] In related technologies, one end of the pilot valve is inserted into the coil section, meaning the coil section is located at one end along the axial direction of the pilot valve section, and the coil section typically extends along the central axis of the pilot valve section. When the four-way valve is in operation, the coil section vibrates, which in turn causes the pilot valve section to vibrate, easily leading to the risk of the pilot valve section loosening or the capillary tube breaking. Summary of the Invention

[0004] The present invention provides a valve assembly and a four-way valve having the same, to solve the problem in the prior art where the vibration of the coil part causes the pilot valve part to vibrate during the operation of the four-way valve, which can easily lead to the loosening of the pilot valve part or the breakage of the capillary tube.

[0005] According to one aspect of the present invention, a valve assembly is provided, comprising: a pilot valve portion; a coil portion sleeved and mounted on one end of the pilot valve portion; and a first fixing portion disposed on the coil portion, the first fixing portion being connected to the main valve portion of a four-way valve.

[0006] By applying the technical solution of this invention, the coil section can be connected to the main valve section via the first fixing part, avoiding the situation where the coil section is suspended in the air as in related technologies. In a four-way valve, the coil section is connected to the pilot valve section, and the capillary tube is connected to both the pilot valve section and the main valve section. During the operation of the four-way valve, the vibration of the coil section is transmitted to the capillary tube through the pilot valve section. In this solution, the first fixing part supports the coil section, reducing the vibration amplitude of the coil section. Furthermore, the first fixing part absorbs some of the vibration of the coil section, reducing the possibility of the vibration of the coil section being transmitted to the pilot valve section and the capillary tube, thereby reducing the possibility of the pilot valve section loosening and the capillary tube tearing, and also reducing the noise generated by vibration during the operation of the four-way valve.

[0007] Furthermore, the coil portion includes a coil housing, and a first fixing part is disposed on the coil housing. This arrangement improves the stability of the connection between the first fixing part and the coil housing, and enhances the ease of processing the first fixing part and the coil housing.

[0008] Furthermore, the first fixing part is integrally formed with the coil housing. This configuration improves the stability of the connection between the first fixing part and the coil housing, and enhances the ease of processing both the first fixing part and the coil housing.

[0009] Furthermore, the first fixing part has an arc-shaped surface that matches the outer peripheral surface of the main valve part, and the arc-shaped surface fits snugly against the peripheral surface of the main valve part. This arrangement increases the contact area between the first fixing part and the main valve part, thereby improving the stability of the connection between the first fixing part and the main valve part.

[0010] Furthermore, multiple first fixing parts are provided, and these multiple first fixing parts are arranged at intervals along the circumference of the main valve part. This arrangement can improve the stability of the connection between the first fixing parts and the main valve part.

[0011] Furthermore, the central axis of the pilot valve section is parallel to the central axis of the main valve section, and two first fixing parts are provided, which are arranged symmetrically about a first plane; wherein, the first plane is the plane formed by the central axis of the pilot valve section and the central axis of the main valve section. This arrangement can ensure that the two first fixing parts are subjected to the same force as much as possible, ensuring the stability of the support of the pilot valve section by the two first fixing parts, and further improving the stability of the support of the pilot valve section.

[0012] Furthermore, the first fixing part includes a first connecting section and a second connecting section that are connected to each other, with the first connecting section and the second connecting section arranged at an angle. The end of the first connecting section away from the second connecting section is connected to the coil part, and the second connecting section is connected to the main valve part. This arrangement optimizes the layout of the support space and facilitates adaptation to different installation requirements.

[0013] Furthermore, the first fixing part is used for welding to the main valve part. This arrangement ensures the connection strength between the first fixing part and the main valve part and reduces the possibility of the first fixing part loosening.

[0014] Furthermore, the pilot valve section includes: a pilot valve body, a portion of which passes through the coil section; a pilot valve seat, the pilot valve body being connected to the pilot valve seat; and a second fixing part, which is connected to both the pilot valve seat and the main valve section to fix the pilot valve seat and the main valve section in place. This improves the stability of the connection between the pilot valve section and the main valve section, further enhances the structural strength of the device, reduces vibration of the pilot valve section, and further reduces vibration or breakage of the capillary tube.

[0015] According to another aspect of the present invention, a four-way valve is provided, comprising: a main valve portion; and the aforementioned valve assembly, wherein a first fixing portion of the valve assembly is used for connection with the main valve portion. This configuration reduces the likelihood of vibration in the coil portion of the four-way valve, reduces the likelihood of vibration in the pilot valve portion, reduces noise generation, reduces the likelihood of capillary tearing, and improves the service life of the four-way valve.

[0016] Furthermore, the four-way valve also includes a capillary tube disposed between the main valve section and the pilot valve section. One end of the capillary tube is connected to the main valve section, and the other end is connected to the pilot valve section. The capillary tube is used to support the pilot valve section. This arrangement can further improve the stability of the support for the pilot valve section, reduce the possibility of vibration of the pilot valve section, and reduce the possibility of the capillary tube being torn. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0018] Figure 1 A schematic diagram of the structure of the four-way valve provided according to Embodiment 2 of the present invention is shown;

[0019] Figure 2 A first-view structural schematic diagram of the four-way valve provided according to Embodiment 2 of the present invention is shown;

[0020] Figure 3 A second-view structural schematic diagram of the four-way valve provided according to Embodiment 2 of the present invention is shown;

[0021] Figure 4 A third-view structural schematic diagram of the four-way valve provided according to Embodiment 2 of the present invention is shown;

[0022] Figure 5 A schematic diagram of the structure of a four-way valve provided according to Embodiment 3 of the present invention is shown.

[0023] The above figures include the following reference numerals:

[0024] 10. Pilot valve section;

[0025] 11. Pilot valve body; 12. Pilot valve seat; 13. Second fixing part;

[0026] 20. First fixing part;

[0027] 21. First connecting segment; 22. Second connecting segment;

[0028] 30. Coil casing;

[0029] 31. First sidewall; 311. Through hole; 32. Second sidewall; 33. Third sidewall; 34. Fourth sidewall;

[0030] 01. Main valve section;

[0031] 011. Main valve body; 012. First connecting pipe; 013. Second connecting pipe; 014. Third connecting pipe; 015. Fourth connecting pipe;

[0032] 02. Capillary tube. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0034] like Figures 1 to 4 As shown, Embodiment 1 of the present invention provides a valve assembly, which includes a pilot valve portion 10, a coil portion, and a first fixing portion 20. The coil portion is sleeved and installed at one end of the pilot valve portion 10. The first fixing portion 20 is disposed on the coil portion and is connected to the main valve portion 01 of a four-way valve.

[0035] By applying the technical solution of this invention, the coil section can be connected to the main valve section 01 via the first fixing part 20, avoiding the situation where the coil section is suspended in the air as in related technologies. In the four-way valve, the coil section is connected to the pilot valve section 10, and the capillary tube 02 is connected to both the pilot valve section 10 and the main valve section 01. During the operation of the four-way valve, the vibration of the coil section is transmitted to the capillary tube 02 through the pilot valve section 10. In this solution, the first fixing part 20 provides support for the coil section, reducing the vibration amplitude of the coil section. Furthermore, the first fixing part 20 absorbs some of the vibration of the coil section, reducing the possibility of the vibration of the coil section being transmitted to the pilot valve section 10 and the capillary tube 02. This reduces the possibility of the pilot valve section 10 becoming loose and the capillary tube 02 tearing, and also reduces the noise generated by vibration during the operation of the four-way valve.

[0036] This solution does not limit the specific connection method between the pilot valve section 10 and the coil section.

[0037] In some embodiments of this solution, the pilot valve 10 is welded to the coil.

[0038] In some other embodiments of this solution, the pilot valve 10 and the coil are connected by fasteners.

[0039] In some other embodiments of this solution, the pilot valve 10 and the coil are connected by a snap-fit ​​structure.

[0040] In this embodiment, the coil section includes a coil housing 30 and a coil body disposed within the coil housing 30. A first fixing part 20 is disposed on the coil housing 30, and the coil body is directly sleeved and installed on one end of the guide valve part 10. This arrangement improves the stability of the connection between the first fixing part 20 and the coil housing 30.

[0041] This solution does not limit the specific connection method between the first fixing part 20 and the coil housing 30.

[0042] In some embodiments of this solution, the first fixing part 20 and the coil housing 30 are separately provided and connected together by a connection structure or welding.

[0043] In this embodiment, the first fixing part 20 and the coil housing 30 are integrally formed. This configuration improves the stability of the connection between the first fixing part 20 and the coil housing 30, reduces the possibility of stress concentration, and enhances the overall structural durability. Furthermore, the integral forming of the first fixing part 20 and the coil housing 30 reduces the assembly process and improves production efficiency.

[0044] like Figure 1 and Figure 2 As shown, the first fixing part 20 further has an arc-shaped surface that is adapted to the circumferential surface of the main valve part 01, and the arc-shaped surface is in close contact with the circumferential surface of the main valve part 01. This arrangement can improve the fit between the first fixing part 20 and the main valve part 01, increase the contact area between the first fixing part 20 and the main valve part 01, improve the stability of the connection between the first fixing part 20 and the main valve part 01, and reduce the possibility of coil vibration.

[0045] This solution does not limit the specific number of the first fixing part 20. There may be one or multiple first fixing parts 20.

[0046] In this design, multiple first fixing parts 20 are provided. This arrangement can further improve the stability of the connection between the first fixing parts 20 and the main valve part 01, and reduce the possibility of vibration of the coil part.

[0047] In some embodiments of this solution, a plurality of first fixing parts 20 are spaced apart along the central axis of the main valve part 01.

[0048] In this embodiment, multiple first fixing parts 20 are distributed at intervals along the circumference of the main valve part 01. This arrangement allows the first fixing parts 20 to provide multiple connection positions for the pilot valve part 10, improving the stability of the connection between the pilot valve part 10 and the main valve part 01.

[0049] Specifically, in this embodiment, the central axis of the pilot valve section 10 is parallel to the central axis of the main valve section 01. Two first fixing parts 20 are provided, and the two first fixing parts 20 are symmetrically arranged about a first plane. The first plane is the plane formed by the central axis of the pilot valve section 10 and the central axis of the main valve section 01. This arrangement ensures that the two first fixing parts 20 are located on opposite sides of the first plane, guaranteeing the uniformity and consistency of the force applied to the two first fixing parts 20 and improving the stability of the two first fixing parts 20 in supporting the pilot valve section 10.

[0050] In this embodiment, the coil housing 30 is generally cubic in shape and has two openings arranged opposite each other along the central axis of the main valve section 01. The coil housing 30 includes a first sidewall 31, a second sidewall 32, a third sidewall 33, and a fourth sidewall 34 arranged sequentially. The first sidewall 31 and the third sidewall 33 are arranged opposite each other along the central axis of the main valve section 01, and the two ends of the coil body extend towards the first sidewall 31 and the third sidewall, respectively. The second sidewall 32 and the fourth sidewall 34 are arranged opposite each other. A through hole 311 is provided on the first sidewall 31 for the pilot valve section 10 to pass through. The second sidewall 32 is located close to the main valve section 01, and the first fixing part 20 is located on the second sidewall 32. This arrangement results in a reasonable and compact structural layout, facilitating the connection between the first fixing part 20 and the main valve section 01.

[0051] like Figure 1 and Figure 2 As shown, specifically, the first fixing part 20 includes a first connecting section 21 and a second connecting section 22 that are connected to each other. The first connecting section 21 and the second connecting section 22 are arranged at an angle. The end of the first connecting section 21 away from the second connecting section 22 is connected to the coil part, and the second connecting section 22 is connected to the main valve part 01. This arrangement optimizes the layout of the support space and facilitates adaptation to different installation requirements.

[0052] Specifically, the second connecting segment 22 is an arc-shaped segment, and the arc-shaped surface is set on the second connecting segment 22. This setting facilitates the processing and forming of the first fixing part 20.

[0053] In this design, the first fixing part 20 and the coil housing 30 are integrally formed. This configuration improves the stability and robustness of the connection between the first fixing part 20 and the coil housing 30.

[0054] Specifically, in the embodiments of this solution, the first connecting segment 21 and the coil housing 30 are integrally formed.

[0055] Specifically, such as Figure 1 and Figure 2As shown, along the direction perpendicular to the central axis of the main valve section 01, the two ends of the second sidewall 32 protrude outward from the first sidewall 31 and the third sidewall 33 respectively, forming two extension plates. After the extension plates are bent away from the fourth sidewall 34, the end of the extension plate away from the second sidewall 32 is bent towards the other extension plate, finally forming an arc-shaped segment that matches the circumferential shape of the main valve section 01, i.e., forming the second connecting section 22. Finally, this extension plate forms the first fixing part 20. This arrangement facilitates the processing and forming of the first fixing part 20 and ensures the structural strength of the first fixing part 20.

[0056] This solution does not limit the connection method between the first fixing part 20 and the main valve part 01.

[0057] In some embodiments of this solution, the first fixing part 20 is connected to the main valve part 01 by a fastening structure.

[0058] In some other embodiments of this solution, the first fixing part 20 is connected to the main valve part 01 by means of snap-fit, plug-in or other methods.

[0059] In this embodiment, the first fixing part 20 is welded to the main valve part 01. Specifically, the second connecting section 22 is welded to the main valve part 01. This arrangement improves the stability of the connection between the first fixing part 20 and the main valve part 01, avoids the possibility of the first fixing part 20 becoming loose, further improves the stability of the connection to the coil part, and reduces the possibility of vibration in the coil part.

[0060] In this embodiment, the pilot valve section 10 includes a pilot valve body 11, a pilot valve seat 12, and a second fixing part 13. A portion of the pilot valve body 11 passes through the coil section. The pilot valve body 11 is connected to the pilot valve seat 12, and the second fixing part 13 is connected to both the pilot valve seat 12 and the main valve section 01 to fix the pilot valve seat 12 to the main valve section 01. The pilot valve section 10 is fixed to the main valve section 01 by the second fixing part 13. This arrangement allows the second fixing part 13 to support and fix the pilot valve body 11, reducing the possibility of vibration in the pilot valve section 10, reducing noise generated during operation, and reducing the possibility of tearing the capillary tube 02.

[0061] Specifically, the second fixing part 13 is a shell-shaped structure. The second fixing part 13 is located on one side of the first side wall 31 of the coil housing 30. The second fixing part 13 is provided with a mounting cavity. The valve seat 12 is disposed in the mounting cavity. The mounting cavity is disposed through the second fixing part 13 in a direction perpendicular to the central axis of the main valve part 01. A notch structure is formed on the two side walls corresponding to the second fixing part 13. The notch structure is used for the capillary tube 02 to pass through.

[0062] Furthermore, the end face of the second fixing part 13 near the main valve part 01 is an arc-shaped surface that matches the circumferential shape of the main valve part 01, and the end face of the second fixing part 13 near the main valve part 01 is in contact with the circumferential surface of the main valve part 01. This arrangement increases the contact area between the second fixing part 13 and the main valve part 01, thereby improving the stability of the connection between the second fixing part 13 and the main valve part 01.

[0063] like Figures 1 to 4 As shown, Embodiment 2 of the present invention provides a four-way valve, which includes a main valve section 01 and the valve assembly described above. The first fixing part 20 and the second fixing part 13 of the valve assembly are used to connect with the main valve section 01. Specifically, the second connecting section 22 of the first fixing part 20 is welded to the side wall of the main valve section 01.

[0064] Furthermore, the four-way valve also includes a capillary tube 02, which is disposed between the main valve section 01 and the pilot valve section 10. One end of the capillary tube 02 is connected to the main valve section 01, and the other end is connected to the pilot valve section 10. The capillary tube 02 is used to support the pilot valve section 10. This arrangement can further improve the stability of fixing the pilot valve section 10, reduce the possibility of vibration of the pilot valve section 10, and reduce the risk of the capillary tube 02 being torn.

[0065] like Figure 1 As shown, specifically in this embodiment of the solution, the main valve section 01 includes a main valve body 011, a first connecting pipe 012, a second connecting pipe 013, a third connecting pipe 014, and a fourth connecting pipe 015. The second connecting section 22 and the second fixing part 13 are respectively disposed on the main valve body 011. The first connecting pipe 012, the second connecting pipe 013, the third connecting pipe 014, and the fourth connecting pipe 015 are respectively the D pipe, E pipe, S pipe, and C pipe of the four-way valve. The second connecting section 22 of the first fixing part 20 is welded to the circumferential surface of the main valve body 011.

[0066] The capillary tube 02 includes a first capillary tube, a second capillary tube, a third capillary tube, and a fourth capillary tube. Specifically, one end of the first capillary tube is connected to the first connecting pipe 012, and the other end is connected to the pilot valve body 11; one end of the second capillary tube is connected to the third connecting pipe 014, and the other end is connected to the pilot valve body 11; one end of the third capillary tube is connected to the first end of the main valve body 011, and the other end is connected to the pilot valve body 11; and one end of the fourth capillary tube is connected to the second end of the main valve body 011, and the other end is connected to the pilot valve body 11.

[0067] like Figure 5As shown, Embodiment 3 of the present invention provides a four-way valve. The difference from Embodiment 2 is that the four-way valve in this embodiment has a first fixing part 20, which includes a second connecting section 22 and two first connecting sections 21. The second connecting section 22 has an arc-shaped surface adapted to the circumferential surface of the main valve section 01. Along the circumference of the main valve section 01, the second connecting section 22 has a first end and a second end disposed opposite to each other. The two first connecting sections 21 are respectively connected to the first end and the second end of the second connecting section 22.

[0068] In some embodiments of this solution, the ends of the two first connecting segments 21 furthest from the second connecting segment 22 are respectively connected to the second sidewall 32 of the coil housing 30. Specifically, the connection can be made by fasteners, snap-fitting, or welding.

[0069] In some other embodiments of this solution, along the direction perpendicular to the central axis of the main valve section 01, one end of the second sidewall 32 protrudes outward from the first sidewall 31 and the third sidewall 33 to form an extension plate. After being bent, the extension plate forms two first connecting segments 21 and one second connecting segment 22. That is, one of the first connecting segments 21 is integrally formed and connected to one end of the second sidewall 32, and the other first connecting segment 21 is connected to the other end of the second sidewall 32 by means of fasteners, snap-fit, or welding.

[0070] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0071] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as exemplary only and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0072] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0073] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0074] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0075] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A valve assembly, characterized in that, include: Pilot valve section (10); A coil section, which is sleeved and installed at one end of the guide valve section (10); A first fixing part (20) is provided on the coil part, and the first fixing part (20) is connected to the main valve part (01) of the four-way valve.

2. The valve assembly according to claim 1, characterized in that, The coil portion includes a coil housing (30), and the first fixing portion (20) is disposed on the coil housing (30).

3. The valve assembly according to claim 2, characterized in that, The first fixing part (20) is integrally formed with the coil housing (30).

4. The valve assembly according to claim 1, characterized in that, The first fixing part (20) has an arc-shaped surface that is adapted to the outer peripheral surface of the main valve part (01) and the arc-shaped surface is in contact with the peripheral surface of the main valve part (01).

5. The valve assembly according to claim 1, characterized in that, The first fixing part (20) is provided in multiple ways, and the multiple first fixing parts (20) are arranged at intervals along the circumference of the main valve part (01).

6. The valve assembly according to claim 5, characterized in that, The central axis of the pilot valve (10) is parallel to the central axis of the main valve (01), and two first fixing parts (20) are provided, which are symmetrical about the first plane. The first plane is the plane formed by the central axis of the pilot valve section (10) and the central axis of the main valve section (01).

7. The valve assembly according to claim 1, characterized in that, The first fixing part (20) includes a first connecting section (21) and a second connecting section (22) that are connected to each other. The first connecting section (21) and the second connecting section (22) are arranged at an angle. The end of the first connecting section (21) away from the second connecting section (22) is connected to the coil part, and the second connecting section (22) is connected to the main valve part (01).

8. The valve assembly according to claim 1, characterized in that, The first fixing part (20) is used for welding to the main valve part (01).

9. The valve assembly according to claim 1, characterized in that, The pilot valve (10) includes: A pilot valve body (11), part of which is inserted into the coil portion; A pilot valve seat (12) is provided, and the pilot valve body (11) is connected to the pilot valve seat (12). The second fixing part (13) is connected to the pilot valve seat (12) and the main valve part (01) respectively, so as to fix the pilot valve seat (12) and the main valve part (01) in place.

10. A four-way valve, characterized in that, The four-way valve includes: Main valve section (01); The valve assembly according to any one of claims 1 to 9, wherein the first fixing part (20) of the valve assembly is used to connect with the main valve part (01).

11. The four-way valve according to claim 10, characterized in that, The four-way valve also includes: A capillary tube (02) is disposed between the main valve section (01) and the guide valve section (10). One end of the capillary tube (02) is connected to the main valve section (01), and the other end is connected to the guide valve section (10). The capillary tube (02) is used to support the guide valve section (10).

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