Reversing valve and air conditioning system

Abstract

This application provides a reversing valve and an air conditioning system, including a main valve component, a piston component, a slider, a guide frame, and a guide frame cover. The main valve component has a cavity and a port communicating with the cavity; the guide frame is disposed in the cavity of the main valve component, and an opening is provided in the middle of the guide frame; the piston component is disposed in the cavity of the main valve component and is respectively connected to the ends of the guide frame; the slider includes a curved protrusion and a flat protrusion, the curved protrusion is disposed in the opening of the guide frame, and the flat protrusion is fixed to the guide frame; the guide frame cover is fixedly connected to the guide frame and is used to limit the slider. With the above structure, this application can reduce the impact torque, avoid the slider side hitting the guide frame and causing the slider to break or shatter, and at the same time reduce the risk of slider jamming.

Description

Technical Field

[0001] This application relates to the field of control components for air conditioning systems, and more specifically, to a reversing valve with a guide cover that has strong resistance to deformation. Background Technology

[0002] In air conditioning systems, reversing valves are typically used as control components to switch the flow direction of the refrigerant, thereby enabling the air conditioner to switch between cooling and heating modes, achieving the dual purpose of cooling in summer and heating in winter.

[0003] The main valve component of the reversing valve has four ports, connected to the compressor suction port, indoor heat exchanger, outdoor heat exchanger, and compressor discharge port, respectively. Two pistons on the main valve component are fixedly connected by a guide bracket. The pistons drive the guide bracket, causing a slider to slide along the upper surface of the main valve seat, thus achieving the switching between cooling and heating. In special circumstances, the slider may be pushed upwards, transferring force to the guide bracket. If the force exerted by the slider on the guide bracket is too large, it will cause deformation of the guide bracket, affecting the normal movement of the piston and consequently the normal operation of the reversing valve. In some cases, a large force can even cause the slider to crack and break. Summary of the Invention

[0004] A primary objective of this application is to overcome at least one of the deficiencies of the prior art and to provide a reversing valve with a guide frame that has strong resistance to deformation, thereby preventing the slider from cracking and breaking.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] According to one aspect of this application, a reversing valve is provided, including a main valve component, a piston component, a slider, a guide frame, and a guide frame cover. The main valve component has a cavity and a port communicating with the cavity; the guide frame is disposed in the cavity of the main valve component, and an opening is provided in the middle of the guide frame; the piston component is disposed in the cavity of the main valve component and connected to the ends of the guide frame; the slider includes a curved protrusion and a flat protrusion, the curved protrusion being disposed in the opening of the guide frame, and the flat protrusion abutting against the guide frame; the guide frame cover is fixedly connected to the guide frame and serves to limit the movement of the slider.

[0007] According to one embodiment of this application, the guide frame cover includes a cap-shaped curved surface portion and a flat surface portion disposed at the edge of the curved surface portion. The shape of the curved surface portion of the guide frame matches the curved surface protrusion of the slider, and the flat surface portion is fixed to the guide frame.

[0008] According to one embodiment of this application, the distance between the curved surface portion and the slider is h1, the distance between the flat surface portion and the slider is h2, and the distance between the guide frame and the slider is H, wherein h1 <H,h2<H。

[0009] According to one embodiment of this application, the distance h1 between the curved surface portion and the slider, the distance h2 between the flat surface portion and the slider, and the distance H between the guide frame and the slider are all less than 3mm.

[0010] According to one embodiment of this application, the curved surface portion of the hat shape is provided with at least one hole.

[0011] According to one embodiment of this application, the guide cover includes a flat plate with a notch in the middle for accommodating the slider.

[0012] According to one embodiment of this application, the guide cover includes at least one arc-shaped bending element.

[0013] According to one embodiment of this application, the centerline of the opening of the guide frame passes through the bent member.

[0014] According to one embodiment of this application, the guide frame cover includes two bending members, which are in the shape of an "X" or a "+".

[0015] According to one embodiment of this application, the guide cover includes an annular curved surface and a plane disposed at the edge of the annular curved surface.

[0016] According to one embodiment of this application, the guide frame cover is formed by cold stamping process and has a thickness of less than 4mm.

[0017] According to one embodiment of this application, the thickness of the guide frame cover is less than 1 mm.

[0018] According to one embodiment of this application, the guide frame cover and the guide frame are connected by welding.

[0019] According to one embodiment of this application, the guide frame cover is provided with a welding part, the welding part including an "L" shaped fold or a "C" shaped fold.

[0020] According to one embodiment of this application, the welded portion of the guide frame cover is welded to the surface of the guide frame opposite to the guide frame cover, or the surface of the guide frame opposite to the guide frame cover, or the edge of the opening of the guide frame.

[0021] According to another aspect of this application, an air conditioning system is provided, including the reversing valve as described above.

[0022] As can be seen from the above technical solutions, the advantages and positive effects of the reversing valve and air conditioning system proposed in this application are as follows:

[0023] The reversing valve proposed in this application includes a main valve component, a piston component, a slider, a guide frame, and a guide frame cover. The main valve component has a cavity and a port, with the port communicating with the cavity. The piston component, slider, and guide frame are disposed within the cavity of the main valve component. The end of the guide frame is connected to the piston component, and an opening is provided in the middle of the guide frame. The slider includes a curved protrusion and a flat protrusion. The curved protrusion is disposed in the opening of the guide frame, and the flat protrusion is fixed to the guide frame. The guide frame cover is fixedly connected to the guide frame and is used to limit the slider's movement. This application can reduce the impact torque, prevent the slider from colliding with the guide frame from the side, thus avoiding slider breakage and shattering. It can also reduce the risk of slider jamming, effectively reducing reversing valve failures and extending the reversing valve's lifespan, thereby reducing the frequency of maintenance and replacement of the air conditioning system, lowering costs, and improving reliability. Attached Figure Description

[0024] The above and other features and advantages of this application will become more apparent from a detailed description of exemplary embodiments thereof with reference to the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of the reversing valve of this application.

[0026] Figure 2 yes Figure 1 A schematic diagram of the structure of the guide frame and guide frame cover.

[0027] Figure 3 yes Figure 2 A schematic diagram of the guide frame cover.

[0028] Figure 4 yes Figure 1 A magnified view of point A.

[0029] Figure 5 yes Figure 1 Enlarged view of point B.

[0030] Figure 6 This is a schematic diagram of the guide frame of the directional valve of this application.

[0031] Figure 7 yes Figure 6 The diagram shows the structure of the bottom surface of the guide frame.

[0032] Figure 8 yes Figure 2 The diagram shows another folding method for the guide frame cover.

[0033] Figure 9 yes Figure 2 The diagram shows the structure of the guide frame cover without folded edges.

[0034] Figure 10 This is a structural schematic diagram of the second embodiment of the guide frame and guide frame cover of the reversing valve of this application.

[0035] Figure 11 yes Figure 10 A schematic diagram of the structure of the guide frame cover (L-shaped folded edge).

[0036] Figure 12 yes Figure 10 A schematic diagram of the structure of the guide frame cover (C-shaped folded edge).

[0037] Figure 13 This is a structural schematic diagram of the third embodiment of the guide frame and guide frame cover of the reversing valve of this application.

[0038] Figure 14 yes Figure 13 A schematic diagram of the guide frame cover.

[0039] Figure 15 This is another structural schematic diagram of the guide frame cover of this application.

[0040] Figure 16 This is a structural schematic diagram of the fourth embodiment of the guide frame and guide frame cover of the reversing valve of this application.

[0041] Figure 17 yes Figure 16 A schematic diagram of the guide frame cover.

[0042] Figure 18 Is Figure 16 A schematic diagram of the structure with an L-shaped folded edge on the guide frame cover.

[0043] Figure 19 Is Figure 16 A schematic diagram of the structure with C-shaped folds on the guide frame cover.

[0044] Figure 20 This is a structural schematic diagram of the fifth embodiment of the guide frame and guide frame cover of the reversing valve of this application.

[0045] Figure 21 yes Figure 20 A schematic diagram of the guide frame cover.

[0046] Figure 22 This is a structural schematic diagram of the sixth embodiment of the guide frame and guide frame cover of the reversing valve of this application.

[0047] Figure 23 yes Figure 22 A schematic diagram of the guide frame cover.

[0048] Figure 24This is a structural schematic diagram of the seventh embodiment of the guide frame and guide frame cover of the reversing valve of this application.

[0049] Figure 25 This is a structural schematic diagram of the eighth embodiment of the guide frame and guide frame cover of the reversing valve of this application.

[0050] Figure 26 This is a structural schematic diagram of the ninth embodiment of the guide frame and guide frame cover of the reversing valve of this application.

[0051] The reference numerals in the attached figures are explained as follows:

[0052] 100 - Directional control valve;

[0053] 101 - Main valve assembly;

[0054] 102 - Cavity;

[0055] 103 - First Port;

[0056] 104 - Second Port;

[0057] 105 - Third Port;

[0058] 106 - Fourth Port;

[0059] 107 - Piston;

[0060] 108-Slider;

[0061] 109-Guide frame;

[0062] 110 - Valve seat;

[0063] 111-Guide frame cover;

[0064] 301 - Curved Surface Section;

[0065] 302 - Planar section;

[0066] 501 - The slider corresponds to the plane of the guide cover;

[0067] 502 - The slider corresponds to the surface of the guide frame;

[0068] 601 - Opening;

[0069] 602 - First Hole;

[0070] 603 - Second hole;

[0071] 604 - Long, narrow protrusions;

[0072] 605 - Installation Department;

[0073] 1001 - Circular hole;

[0074] 1301 - Square Hole;

[0075] 1501 - Hexagonal hole;

[0076] 1701-Flat Plate;

[0077] 1702 - Gap;

[0078] 1801-L-shaped fold;

[0079] 1901-C-shaped fold;

[0080] 2101, 2301 - Bending section;

[0081] 303, 2102, 2302 - Welding section. Detailed Implementation

[0082] Typical embodiments embodying the features and advantages of this application will be described in detail in the following description. It should be understood that this application can have various variations in different embodiments, all of which do not depart from the scope of this application, and the descriptions and drawings therein are for illustrative purposes only and not intended to limit this application.

[0083] In the following description of various exemplary embodiments of this application, reference is made to the accompanying drawings, which form part of this application, and which illustrate by way of example different exemplary structures, systems, and steps that can implement various aspects of this application. It should be understood that other specific solutions to components, structures, exemplary devices, systems, and steps may be used, and structural and functional modifications may be made without departing from the scope of this application. Furthermore, while the terms “upper,” “middle,” “inner,” etc., may be used in this specification to describe different exemplary features and elements of this application, these terms are used herein only for convenience, such as the orientation according to the examples described in the accompanying drawings. Nothing in this specification should be construed as requiring a specific three-dimensional orientation of the structure to fall within the scope of this application.

[0084] To make the above-mentioned objectives, features and advantages of this application readily apparent, specific embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0085] like Figure 1As shown, the directional control valve 100 of this application includes a main valve component 101, a piston component 107, a slider 108, a guide frame 109, and a guide frame cover 111. The main valve component 101 has a cavity 102 and four ports communicating with the cavity 102, namely a first port 103, a second port 104, a third port 105, and a fourth port 106. The main valve component includes a valve seat 110, which is disposed at the positions where the first port 103, the third port 105, and the fourth port 106 connect to the cavity 102. Two pistons 107, a slider 108, a guide frame 109, and a guide frame cover 111 are disposed within the cavity 102 of the main valve component 101. The slider 108 can move on the upper surface of the valve seat 110. The guide frame 109 is connected to the pistons 107 at both ends, and the pistons 107 drive the guide frame 109 to move the slider 108. The guide frame 109 has an opening, and the slider 108 includes a curved protrusion and a flat protrusion. The curved protrusion is located at the opening of the guide frame 109, and the flat protrusion abuts against the guide frame 109. The guide frame cover 111 is located above the opening and forms a space to accommodate the curved protrusion of the slider 108. The guide frame cover 111 is fixedly connected to the guide frame 109 and is used to limit the slider 108.

[0086] The first port 103 of the reversing valve 100 is connected to the outdoor heat exchanger, the second port 104 is connected to the outlet of the compressor, the third port 105 is connected to the indoor heat exchanger, and the fourth port 106 is connected to the suction of the compressor.

[0087] When the air conditioner is in cooling mode, piston 107, under pressure, pushes slider 108 to the left, thereby connecting the first port 103 of the reversing valve with the second port 104, and the third port 105 with the fourth port 106. The high-pressure refrigerant gas in the second port 104 enters the outdoor heat exchanger (acting as a condenser) through the first port 103 to dissipate heat to the outside, then enters the indoor heat exchanger (acting as an evaporator) through the pipes, then enters the fourth port 106 through the third port 105, and finally returns to the compressor, completing the refrigeration cycle.

[0088] When the air conditioner is in heating mode, piston 107, under pressure, pushes slider 108 to the right, thereby connecting the second port 104 of the reversing valve with the third port 105, and the first port 103 with the fourth port 106. The high-pressure refrigerant gas in the second port 104 enters the indoor heat exchanger (acting as a condenser) through the third port 105 to dissipate heat into the room, then enters the outdoor heat exchanger (acting as an evaporator) through the pipe, then enters the fourth port 106 through the first port 103, and finally returns to the compressor, completing the heating cycle.

[0089] In this embodiment, as Figure 2As shown, a cap-shaped guide frame cover 111 is provided on the guide frame 109. The guide frame cover 111 and the guide frame 109 are fixed together by welding. The welding method can be laser welding, argon arc welding, cold welding, etc. Using a cap-shaped guide frame cover increases the minimum cross-sectional area of the guide frame, enhances the anti-deformation ability of the guide frame, and reduces the risk of the slider getting stuck.

[0090] In this embodiment, as Figure 3 shown, the guide frame cover 111 includes a cap-shaped curved surface part 301 and a flat surface part 302 provided at the edge of the curved surface part 301. It also includes a welding part 303 for welding and fixing the guide frame cover 111 to the guide frame 109. The welding part 303 is welded to the surface of the guide frame 109 facing the guide frame cover 111 or the surface of the guide frame 109 opposite to the guide frame cover 111, which can be selected according to the actual situation. In this embodiment, the welding part 303 is an L-shaped hem, provided in the short side direction of the guide frame cover 111 corresponding to the guide frame 109. As Figure 4 and Figure 5 shown, the distance h1 between the curved surface part 301 and the slider 108, the distance h2 between the flat surface part 302 and the slider 108, and the distance H between the guide frame 109 and the slider 108 are all less than 3 mm, and h1 < H, h2 < H. The above design enables the part of the slider 108 located on the guide frame cover 111 to contact the curved surface part 301 of the guide frame cover 111 first, thereby reducing the lever arm and decreasing the impact torque during reverse.

[0091] As Figures 6 to 7 shown, in this embodiment, the guide frame 109 is generally rectangular in shape, and the length of the long side is much greater than the length of the short side. A rectangular opening 601 is provided in the middle of the guide frame for accommodating the slider 108. A first hole 602 and a second hole 603 are provided at both ends of the opening 601. A long strip-shaped protrusion 604 is provided on the long side of the rectangle, and a mounting part 605 is provided on the short side of the rectangle for fixed installation with the piston 107. The welding position of the guide frame cover 111 and the guide frame 109 can be the surface of the guide frame 109 facing the guide frame cover 111 (front side) or the surface of the guide frame 109 opposite to the guide frame cover 111 (back side), or an appropriate position on the long side of the guide frame 109.

[0092] Figure 8 shows another hem form of the welding part 303 of the guide frame cover 111 of the present application, where the welding part 303 uses a C-shaped hem and is provided at the position of the long side of the guide frame cover 111 corresponding to the guide frame 109. Figure 9 shows another form of the guide frame cover 111 of the present application, where the welding part 303 is not designed, and the flat surface part 302 assumes the function of the welding part 303 and is welded to the front side of the guide frame 109.

[0093] like Figure 10 As shown, the guide cover 111 of this application is provided with a circular hole 1001, or multiple circular holes may be provided. Figure 11 It shows Figure 10 The guide cover 111 shown has a circular hole 1001 on the curved surface portion 301, and also includes a flat portion 302 and a welding portion 303. In this embodiment, the welding portion 303 is an L-shaped folded edge. In other embodiments, the welding portion 303 is a C-shaped folded edge (e.g., Figure 12 (As shown). Using L-shaped or C-shaped folds in the welding section makes the weld stronger and is easier to operate.

[0094] like Figure 13 As shown, the guide cover 111 of this application is provided with a square hole, or multiple square holes may be provided. Figure 14 It shows Figure 13 The guide cover 111 shown has a square hole 1301 on the curved surface portion 301, and also includes a flat portion 302 and a welding portion 303. In this embodiment, the welding portion 303 is an L-shaped folded edge. In some other embodiments, the welding portion 303 may also be a C-shaped folded edge. Using an L-shaped or C-shaped folded edge in the welding portion makes the weld more secure and simplifies the operation.

[0095] It should be noted that the holes on the curved surface can also be elliptical holes, oblong holes, or polygonal holes (such as...). Figure 15 The hexagonal hole 1501 and irregular holes are shown. Designing holes on the curved surface allows the portion of the slider 108 located on the guide cover 111 to first contact the curved portion 301 of the guide cover 111, thereby reducing the lever arm, lowering the impact torque during reverse movement, and reducing the weight of the guide cover. The welding section can also be designed at the position of the guide cover corresponding to the long side of the guide frame, using an L-shaped or C-shaped folded edge to facilitate welding.

[0096] like Figures 16 to 17 As shown, the guide cover 111 of this application is a flat plate 1701, with a notch 1702 in the middle of the flat plate 1701 to accommodate the slider 108. The design of the guide cover also enables the part of the slider 108 located on the guide cover 111 to contact the guide cover 111 first, thereby reducing the lever arm, reducing the impact torque during reverse movement, and reducing the weight of the guide cover. Figure 18 It shows Figure 16 The guide frame cover 111 shown also has an L-shaped folded edge 1801. Figure 19 It shows Figure 16The guide cover 111 shown also has a C-shaped folded edge 1901. The folded edge is designed to weld the guide cover to the guide frame.

[0097] Figure 20 The illustration shows a case where the guide cover 111 of this application is an arc-shaped bent piece, wherein the center line of the opening 601 of the guide frame 109 passes through the aforementioned arc-shaped bent piece, such that the bent piece is positioned directly above the opening 601. This allows the outer surface of the upper arc of the curved protrusion of the slider 108 to contact the inner surface of the bent piece when reverse stress is generated, thereby reducing the lever arm, which can be reduced to 0 in special cases. Therefore, it can provide a certain degree of protection for the slider, preventing it from jamming or breaking. Figure 21 It shows Figure 20 The guide frame cover 111 shown includes a bent portion 2101 and welded portions 2102 at both ends. In this embodiment, the bent portion is welded near the short side of the guide frame opening.

[0098] Figure 22 This application illustrates a case where the guide cover 111 is another type of arc-shaped bent component, wherein the centerline of the opening 601 of the guide frame 109 passes through the aforementioned arc-shaped bent component, such that the bent component is positioned directly above the opening 601. This allows the outer surface of the upper arc of the curved protrusion of the slider 108 to contact the inner surface of the bent component when reverse stress is generated, thereby reducing the lever arm, which can be reduced to 0 in special cases. Therefore, it can provide a certain degree of protection for the slider, preventing it from jamming or breaking. Figure 23 It shows Figure 22 The guide frame cover 111 shown includes a bent portion 2301 and welded portions 2302 at both ends. In this embodiment, the bent portion is welded to the long side of the guide frame.

[0099] Figure 24 The example shown is a case where the guide cover 111 of this application is an annular surface. The design of the annular surface can also reduce the lever arm of the contact point between the slider and the guide cover, thereby protecting the slider.

[0100] Figure 25 The guide cover 111 of this application is shown to be an "X"-shaped bent component, wherein the center line of the opening 601 of the guide frame 109 passes through the center part of the "X"-shaped bent component, so that the bent component is positioned directly above the opening 601. This allows the outer surface of the upper arc of the curved protrusion of the slider 108 to contact the inner surface of the bent component when reverse stress is generated, thereby reducing the lever arm, which can be reduced to 0 in special cases. Therefore, it can provide a certain degree of protection for the slider, preventing it from jamming or breaking.

[0101] Figure 26The guide cover 111 of this application is shown to be a cross-shaped bent component, wherein the center line of the opening 601 of the guide frame 109 is on the same straight line as the center line of the cross-shaped bent component. When reverse stress is generated, the outer surface of the upper arc of the curved protrusion of the slider 108 contacts the inner surface of the bent component, thereby reducing the lever arm, which can be reduced to 0 in special cases. Therefore, the slider can be protected from jamming and breakage.

[0102] The guide cover used in the reversing valve of this application is formed by cold stamping, with a thickness of less than 4mm, preferably less than 1mm. The guide cover has high dimensional accuracy and excellent mechanical properties, enabling a small thickness and high resistance to deformation and extrusion, thereby protecting the slider and preventing breakage and damage; and the thickness cannot be too thick, since the guide cover is welded to the guide frame and will move back and forth with the guide frame, so it is necessary to minimize the weight while ensuring the strength of the guide cover, which also helps to save materials and reduce costs.

[0103] It should be noted that the directional control valves shown in the accompanying drawings and described in this specification are merely a few examples among many directional control valves capable of employing the principles of this application. It should be clearly understood that the principles of this application are by no means limited to any details of the directional control valves shown in the accompanying drawings or described in this specification, or any components of the directional control valves.

[0104] The above is a detailed description of several exemplary embodiments of the directional control valve proposed in this application. The working principle and working process of the directional control valve proposed in this application will be described below.

[0105] Combined with appendix Figures 1 to 25 The reversing valve of this application includes a main valve component, a piston component, a slider, a guide frame, a guide frame cover, and a valve seat. The main valve component has a cavity and four ports communicating with the cavity, and also includes a valve seat. The piston, slider, guide frame, and guide frame cover are disposed within the cavity. The slider is movable, and the piston drives the guide frame to move the slider. Of the four ports, the first port communicates with the outdoor heat exchanger, the second port communicates with the compressor outlet port, the third port communicates with the indoor heat exchanger, and the fourth port communicates with the compressor suction port. The piston inside the cavity of the main valve component is fixedly connected by the guide frame. Driven by the guide frame, the slider slides along the upper surface of the valve seat to realize the conversion between cooling and heating positions.

[0106] Under normal operating conditions, the high-pressure side pressure at the fourth port should be greater than the low-pressure side pressure. Therefore, the slider, under the action of the pressure difference, abuts against the valve seat to switch left and right. However, under special circumstances in the system, the low-pressure side pressure is greater than the high-pressure side pressure. The reverse pressure can be simplified to a force F as shown in the figure. The slider will be pushed upward and the force will be transmitted to the guide frame. The slider moves upward and contacts the guide frame. The surface of the slider corresponding to the guide frame contacts the lower surface of the guide frame. Figure 3 As shown), the lever arm is L0 ( Figure 1 (As shown); After the guide cover of this application is installed on the guide frame, the slider moves upward and contacts the guide cover. The surface 501 of the slider corresponding to the guide cover plane contacts the guide cover, and the lever arm becomes smaller to L ( Figure 1 (As shown). In extreme cases, the top of the outer arc surface of the slider contacts the top of the inner surface of the guide cover, and the lever arm can become 0. Therefore, the design of this application reduces the impact torque during reverse movement, thereby solving the technical problem of slider breakage and shattering caused by the slider side impacting the guide frame, and reducing the risk of slider jamming. This effectively reduces the failure rate of the reversing valve and extends its service life.

[0107] Through the above-described usage process of the directional valve of this application, it can be concluded that the directional valve of this application, by setting a guide cover on the guide frame, increases the minimum cross-sectional area of ​​the guide frame, enhances the deformation resistance of the guide frame, avoids slider breakage and fracture, reduces the risk of slider jamming, effectively reduces directional valve failures and extends the life of the directional valve, reduces maintenance and usage costs and saves resources.

[0108] In summary, the reversing valve proposed in this application is mainly used in air conditioning systems. It includes a main valve assembly, a piston assembly, a slider, a guide frame, and a guide frame cover. The main valve assembly has a cavity and a port. The piston assembly, slider, guide frame, and guide frame cover are disposed within the cavity of the main valve assembly. The piston assembly drives the guide frame, which in turn moves the slider, thus achieving the switching between air conditioning cooling and heating. The guide frame is connected to pistons at both ends, and has openings on it to accommodate the slider. The guide frame cover is positioned above the openings, forming a space to accommodate the slider, and is fixedly connected to the guide frame. This design allows the slider to move upwards and contact the guide frame cover in special circumstances within the air conditioning system, reducing the lever arm and thus lowering the impact torque during reverse movement, preventing damage to the guide frame and slider jamming.

[0109] The exemplary embodiments of the reversing valve and air conditioning system proposed in this application have been described and / or illustrated in detail above. However, the embodiments of this application are not limited to the specific embodiments described herein; rather, components and / or steps of each embodiment may be used independently and separately from other components and / or steps described herein. Each component and / or step of one embodiment may also be used in combination with other components and / or steps of other embodiments. In describing the elements / components / etc. described and / or illustrated herein, the terms “a,” “first,” “second,” and “the above” are used to indicate the presence of one or more elements / components / etc. The terms “comprising,” “including,” and “having” are used to indicate an open-ended inclusion and mean that additional elements / components / etc. may exist in addition to the listed elements / components / etc.

[0110] The embodiments of this application are not limited to the specific embodiments described herein. Rather, components of each embodiment can be used independently and separately from other components described herein. Each component of one embodiment can also be used in combination with other components of other embodiments. In the description of this specification, the terms "one embodiment," "some embodiments," "other embodiments," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the embodiments. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0111] The above are merely preferred embodiments of the application examples and are not intended to limit the application examples. For those skilled in the art, the application examples can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the application examples should be included within the protection scope of the application examples.

Claims

1. A reversing valve, characterized in that: include: A main valve assembly having a cavity and a port communicating with the cavity; Guide frame; The guide frame is provided with an opening in the middle and a first hole and a second hole at both ends of the opening, which is disposed in the cavity of the main valve component. A piston assembly, wherein the piston assembly is disposed within the cavity of the main valve assembly and is connected to the end of the guide frame; The slider includes a curved protrusion and a flat protrusion, the curved protrusion being disposed in the opening of the guide frame, and the flat protrusion abutting against the guide frame; A guide cover, which is fixedly connected to the guide frame and is used to limit the movement of the slider; The guide frame cover includes a cap-shaped curved surface portion and a flat surface portion disposed on the edge of the curved surface portion. The shape of the curved surface portion of the guide frame matches the curved surface protrusion of the slider, and the flat surface portion is fixed to the guide frame.

2. The reversing valve as described in claim 1, characterized in that: The distance between the curved surface and the slider is h1, the distance between the flat surface and the slider is h2, and the distance between the guide frame and the slider is H, where h1 <H,h2<H。 3. The reversing valve as described in claim 2, characterized in that: The distances h1 between the curved surface and the slider, h2 between the flat surface and the slider, and H between the guide frame and the slider are all less than 3mm.

4. The reversing valve as described in claim 1, characterized in that: The curved portion of the hat shape has at least one hole.

5. The reversing valve as described in claim 1, characterized in that: The guide cover includes a flat plate with a notch in the middle to accommodate the slider.

6. The reversing valve as described in claim 1, characterized in that: The guide frame cover includes at least one arc-shaped bend.

7. The reversing valve as described in claim 6, characterized in that: The centerline of the opening of the guide frame passes through the bent member.

8. The reversing valve as described in claim 6, characterized in that: The guide frame cover includes two bending members, which are in the shape of an "X" or a "+".

9. The reversing valve as described in claim 1, characterized in that: The guide frame cover includes an annular curved surface and a plane disposed at the edge of the annular curved surface.

10. The reversing valve as described in claim 1, characterized in that: The guide frame cover is formed by cold stamping and has a thickness of less than 4mm.

11. The reversing valve as described in claim 10, characterized in that: The thickness of the guide frame cover is less than 1 mm.

12. The reversing valve as described in claim 1, characterized in that: The guide frame cover and the guide frame are connected by welding.

13. The reversing valve as described in claim 12, characterized in that: The guide frame cover is provided with a welding part, which includes an "L" shaped fold or a "C" shaped fold.

14. The reversing valve as described in claim 13, characterized in that: The welded portion of the guide frame cover is welded to the surface of the guide frame opposite to the guide frame cover, or the surface of the guide frame opposite to the guide frame cover, or the edge of the opening of the guide frame.

15. An air conditioning system, characterized in that: Includes the directional valve as described in any one of claims 1-14.

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