Four-way valve reversing valve connecting pipe structure and four-way valve reversing valve with same

Abstract

The utility model provides a four-way valve reversing valve connecting pipe structure and a four-way valve reversing valve with the four-way valve reversing valve connecting pipe structure. The four-way valve reversing valve connecting pipe structure comprises a first connecting pipe, a second connecting pipe, a third connecting pipe and a fourth connecting pipe which are connected to a valve body of the four-way valve reversing valve. A first copper joint, a second copper joint and a third copper joint are respectively welded on the outer end parts of the second connecting pipe, the third connecting pipe and the fourth connecting pipe; the first copper connector and the second connecting pipe form a first welding position, the third copper connector and the fourth connecting pipe form a second welding position, the second copper connector and the third connecting pipe form a third welding position, and the first welding position, the second welding position and the third welding position are distributed in a staggered mode in the axial direction of the third connecting pipe. The four-way valve reversing valve comprises the four-way valve reversing valve connecting pipe structure. Welding influence caused by adjacent connecting pipes during welding can be effectively reduced, welding spot failure can be avoided, and welding quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of four-way valve reversing valves, and more specifically, to a four-way valve reversing valve pipe connection structure and a four-way valve reversing valve with the same. Background Art

[0002] Four-way valve reversing valves (hereinafter referred to as four-way valves) are mainly applied to systems such as heat pump air conditioners and water heaters, and are mainly used to switch the flow direction of the refrigerant flow path in the system, thereby realizing functions such as refrigeration, heating, and defrosting of the entire system;

[0003] Among them, the E pipe, S pipe, C pipe, and D pipe in the four-way valve are all welded to the client pipeline components (external pipelines, copper materials) by flame brazing. In order to realize the welding of stainless steel pipes and copper pipes (the E pipe, S pipe, C pipe, and D pipe are all made of stainless steel, and the client pipeline components are made of copper), a copper connecting pipe needs to be installed inside the stainless steel connecting pipe, and then the connecting part is welded to the client pipeline components.

[0004] For those skilled in the art, how to provide a four-way valve that can relatively reduce the welding impact on adjacent pipes during the welding operation between the main body part of the connecting pipe and the connecting pipe is a problem that needs to be solved by those skilled in the art. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a four-way valve reversing valve pipe connection structure and a four-way valve reversing valve with the same, which can effectively reduce the welding impact caused by adjacent pipes during welding, avoid the failure of solder joints, improve the welding quality, and in addition, can make the connection between the connecting pipe and the joint firm and save materials.

[0006] The utility model provides a four-way valve reversing valve pipe connection structure, which includes a first pipe, a second pipe, a third pipe, and a fourth pipe connected to the valve body of the four-way valve reversing valve; the second pipe, the third pipe, and the fourth pipe are parallel and arranged at intervals in sequence, and the outer ends of the second pipe, the third pipe, and the fourth pipe are respectively welded to connect a first copper joint, a second copper joint, and a third copper joint, and the outer ends of the first copper joint, the second copper joint, and the third copper joint are respectively welded to connect a first client pipeline component, a second client pipeline component, and a third client pipeline component; the first copper joint and the second pipe form a first welding position, the third copper joint and the fourth pipe form a second welding position, the second copper joint and the third pipe form a third welding position, and the first welding position, the second welding position, and the third welding position are misaligned and distributed along the axial direction of the third pipe.

[0007] After the present utility model adopts the above structure, since the first copper joint and the second pipe form a first welding position, the third copper joint and the fourth pipe form a second welding position, and the second copper joint and the third pipe form a third welding position, and the first welding position, the second welding position and the third welding position are misaligned along the axial direction of the third pipe, it can effectively reduce the welding influence caused by adjacent pipes during welding, avoid solder joint failure, improve welding quality. In addition, it can also make the connection between the pipe and the joint firm and save materials.

[0008] In a possible implementation manner, a first distance H1 is formed between the outer end of the first copper joint and the outer side wall of the valve body, and between the outer end of the third copper joint and the outer side wall of the valve body; a second distance H2 is formed between the inner end of the second copper joint and the outer side wall of the valve body; a third distance H3 is formed between the outer end of the second pipe and the outer side wall of the valve body, and between the outer end of the fourth pipe and the outer side wall of the valve body; a fourth distance H4 is formed between the inner end of the first client pipeline component and the outer side wall of the valve body, and between the inner end of the third client pipeline component and the outer side wall of the valve body; the first distance H1 is greater than the fourth distance H4, the fourth distance H4 is greater than the second distance H2, and the second distance H2 is greater than the third distance H3; after adopting this structure, it can further reduce the welding influence caused by adjacent pipes during welding, avoid solder joint failure, improve welding quality. In addition, it can also make the connection between the pipe and the joint firm and save materials.

[0009] In a possible implementation manner, the inner end of the first copper joint is inserted into the outer end of the second pipe and is circumferentially welded and sealed by solder located between the outer side wall of the first copper joint and the inner side wall of the second pipe; the inner end of the first client pipeline component is inserted into the outer end of the first copper joint and is circumferentially welded and sealed by solder located between the outer side wall of the first client pipeline component and the inner side wall of the first copper joint; after adopting this structure, the inner end of the first copper joint can be reliably and conveniently fixed together with the outer end of the second pipe and circumferentially sealed; the inner end of the first client pipeline component can be reliably and conveniently fixed together with the outer end of the first copper joint and circumferentially sealed.

[0010] In a possible implementation, the inner end portion of the third copper joint is inserted into the outer end portion of the fourth connecting pipe and is circumferentially welded and fixed and sealed by solder located between the outer side wall of the third copper joint and the inner side wall of the fourth connecting pipe; the inner end portion of the third client pipeline component is inserted into the outer end portion of the third copper joint and is circumferentially welded and fixed and sealed by solder located between the outer side wall of the third client pipeline component and the inner side wall of the third copper joint; after adopting this structure, the inner end portion of the third copper joint can be reliably and conveniently fixed together with the outer end portion of the fourth connecting pipe and circumferentially sealed; the inner end portion of the third client pipeline component can be reliably and conveniently fixed together with the outer end portion of the third copper joint and circumferentially sealed.

[0011] In a possible implementation, the inner end portion of the second copper joint is inserted into the outer end portion of the third connecting pipe and is circumferentially welded and fixed and sealed by solder located between the outer side wall of the second copper joint and the inner side wall of the third connecting pipe, and the inner end portion of the second client pipeline component is inserted into the outer end portion of the second copper joint and is circumferentially welded and fixed and sealed by solder located between the outer side wall of the second client pipeline component and the inner side wall of the second copper joint; after adopting this structure, the inner end portion of the second copper joint can be reliably and conveniently fixed together with the outer end portion of the third connecting pipe and circumferentially sealed, and the inner end portion of the second client pipeline component can be reliably and conveniently fixed together with the outer end portion of the second copper joint and circumferentially sealed.

[0012] In a possible implementation, the four-way valve reversing valve connecting pipe structure further includes a bushing. The inner end portion and the outer end portion of the bushing are respectively inserted into the outer end portion of the third connecting pipe and the inner end portion of the second copper joint. The outer side wall of the bushing is welded and fixed and circumferentially sealed with the inner side wall of the third connecting pipe and the inner side wall of the second copper joint by solder; a fifth spacing H5 is formed between the inner end portion of the bushing and the outer side wall of the valve body, and the fifth spacing H5 is less than or equal to the third spacing H3; after adopting this structure, the inner end portion of the second client pipeline component can be reliably and conveniently fixed together with the outer end portion of the second copper joint and circumferentially sealed. Moreover, under the action of the bushing, the connection firmness between the second copper joint and the third connecting pipe can be improved, and the reliability of the circumferential seal between the second copper joint and the third connecting pipe can be improved. In addition, since the fifth spacing H5 is less than or equal to the third spacing H3, the welding influence caused by adjacent connecting pipes during welding can be further reduced, the solder joint failure can be avoided, the welding quality can be improved, and moreover, the connection between the connecting pipe and the joint can be made firm and materials can be saved.

[0013] In a possible implementation, the outer end portion of the bushing is inserted into the inner end portion of the second client pipeline fitting. The outer side wall of the outer end portion of the bushing is welded and fixed to the inner side wall of the inner end portion of the second client pipeline fitting by solder and sealed circumferentially. After adopting this structure, the fixing firmness and reliability between the second client pipeline fitting and the second copper joint can be further improved. Similarly, in this way, the first spacing H1 is greater than the fourth spacing H4, the fourth spacing H4 is greater than the second spacing H2, the second spacing H2 is greater than the third spacing H3, the third spacing H3 is greater than or equal to the fifth spacing H5, so that the welding influence caused by adjacent pipes during welding can be further reduced, the solder joint failure can be avoided, the welding quality can be improved, and in addition, the connection between the pipe and the joint can be made firm, saving materials.

[0014] In a possible implementation, a necked-down portion is provided on the outer end portion of the bushing. The necked-down portion is inserted into the inner end portion of the second client pipeline fitting. The outer side wall of the necked-down portion is welded and fixed to the inner side wall of the inner end portion of the second client pipeline fitting by solder and sealed circumferentially. Through the setting of the necked-down portion, under the action of the necked-down portion, the outer end portion of the bushing can be inserted into the inner end portion of the second client pipeline fitting more reliably and conveniently, which brings convenience to the fixation of the outer end portion of the bushing and the second client pipeline fitting, and can improve the welding firmness between the bushing and the inner end portion of the second client pipeline fitting. Similarly, in this way, the first spacing H1 is greater than the fourth spacing H4, the fourth spacing H4 is greater than the second spacing H2, the second spacing H2 is greater than the third spacing H3, the third spacing H3 is greater than or equal to the fifth spacing H5, so that the welding influence caused by adjacent pipes during welding can be further reduced, the solder joint failure can be avoided, the welding quality can be improved, and in addition, the connection between the pipe and the joint can be made firm, saving materials.

[0015] In a possible implementation, the outer end portion of the bushing abuts against the inner end portion of the second client pipeline fitting. After adopting this structure, since the outer end portion of the bushing abuts against the inner end portion of the second client pipeline fitting, it can play a role in limiting the second client pipeline fitting, that is, when the inner end portion of the second client pipeline fitting is welded and fixed to the outer end portion of the second copper joint, it brings convenience to the connection and fixation between the second client pipeline fitting and the second copper joint. Similarly, in this way, the first spacing H1 is greater than the fourth spacing H4, the fourth spacing H4 is greater than the second spacing H2, the second spacing H2 is greater than the third spacing H3, the third spacing H3 is greater than or equal to the fifth spacing H5, so that the welding influence caused by adjacent pipes during welding can be further reduced, the solder joint failure can be avoided, the welding quality can be improved, and in addition, the connection between the pipe and the joint can be made firm, saving materials.

[0016] A four-way valve reversing valve includes the above-mentioned four-way valve reversing valve pipe connection structure. Description of the Drawings

[0017] Figure 1 It is a three-dimensional structural schematic diagram of a four-way valve reversing valve;

[0018] Figure 2 It is a structural schematic diagram of the first pipe connection structure of a four-way valve reversing valve;

[0019] Figure 3 It is a structural schematic diagram of the second pipe connection structure of a four-way valve reversing valve;

[0020] Figure 4 It is a sectional structural schematic diagram when the third pipe, the second copper joint, the second client pipeline component and the bushing adopt the second connection method;

[0021] Figure 5 It is a sectional structural schematic diagram when the third pipe, the second copper joint, the second client pipeline component and the bushing adopt the third connection method;

[0022] Figure 6 It is a sectional structural schematic diagram when the third pipe, the second copper joint, the second client pipeline component and the bushing adopt the fourth connection method;

[0023] Figure 7 It is a sectional structural schematic diagram when the third pipe, the second copper joint, the second client pipeline component and the bushing adopt the fifth connection method. Specific embodiments

[0024] First of all, those skilled in the art should understand that these embodiments are only used to explain the technical principles of the embodiments of this application, and are not intended to limit the protection scope of the embodiments of this application. Those skilled in the art can make adjustments according to needs to adapt to specific application scenarios.

[0025] In the description of the embodiments of this application, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of this application can be understood in specific situations.

[0026] In the embodiments of the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0027] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Embodiment 1

[0029] Refer to Figure 1-2 As shown, an on-off valve connecting pipe structure of a four-way valve disclosed in the embodiments of the present application includes a first connecting pipe 11, a second connecting pipe 12, a third connecting pipe 13 and a fourth connecting pipe 14 connected to the valve body 1 of the on-off valve of the four-way valve; the second connecting pipe 12, the third connecting pipe 13 and the fourth connecting pipe 14 are parallel and arranged at intervals in sequence. First copper joints 2, second copper joints 3 and third copper joints 4 are respectively welded to the outer ends of the second connecting pipe 12, the third connecting pipe 13 and the fourth connecting pipe 14. First client pipeline components 5, second client pipeline components 6 and third client pipeline components 7 are respectively welded to the outer ends of the first copper joints 2, the second copper joints 3 and the third copper joints 4; a first welding position is formed between the first copper joint 2 and the second connecting pipe 12, a second welding position is formed between the third copper joint 4 and the fourth connecting pipe 14, and a third welding position is formed between the second copper joint 3 and the third connecting pipe 13. The first welding position, the second welding position and the third welding position are staggeredly distributed along the axial direction of the third connecting pipe 13.

[0030] A first distance H1 is formed between the outer end of the first copper joint 2 and the outer side wall of the valve body 1, and between the outer end of the third copper joint 4 and the outer side wall of the valve body 1. A second distance H2 is formed between the inner end of the second copper joint 3 and the outer side wall of the valve body 1. A third distance H3 is formed between the outer end of the second connecting pipe 12 and the outer side wall of the valve body 1, and between the outer end of the fourth connecting pipe 14 and the outer side wall of the valve body 1. A fourth distance H4 is formed between the inner end of the first client pipeline component 5 and the outer side wall of the valve body 1, and between the inner end of the third client pipeline component 7 and the outer side wall of the valve body 1. The first distance H1 is greater than the fourth distance H4, the fourth distance H4 is greater than the second distance H2, and the second distance H2 is greater than the third distance H3. By adopting this structure, the welding influence caused by adjacent connecting pipes during welding can be further reduced, the welding point failure can be avoided, the welding quality can be improved. In addition, the connection between the connecting pipe and the joint can be made firm, and materials can be saved.

[0031] The inner end portion of the first copper joint 2 is inserted into the outer end portion of the second connecting pipe 12 and is circumferentially welded and fixed and sealed by solder located between the outer side wall of the first copper joint 2 and the inner side wall of the second connecting pipe 12; the inner end portion of the first client pipeline component 5 is inserted into the outer end portion of the first copper joint 2 and is circumferentially welded and fixed and sealed by solder located between the outer side wall of the first client pipeline component 5 and the inner side wall of the first copper joint 2; after adopting this structure, the inner end portion of the first copper joint can be reliably and conveniently fixed together with the outer end portion of the second connecting pipe and circumferentially sealed; the inner end portion of the first client pipeline component can be reliably and conveniently fixed together with the outer end portion of the first copper joint and circumferentially sealed.

[0032] The inner end portion of the third copper joint 4 is inserted into the outer end portion of the fourth connecting pipe 14 and is circumferentially welded and fixed and sealed by solder located between the outer side wall of the third copper joint 4 and the inner side wall of the fourth connecting pipe 14; the inner end portion of the third client pipeline component 7 is inserted into the outer end portion of the third copper joint 4 and is circumferentially welded and fixed and sealed by solder located between the outer side wall of the third client pipeline component 7 and the inner side wall of the third copper joint 4; after adopting this structure, the inner end portion of the third copper joint can be reliably and conveniently fixed together with the outer end portion of the fourth connecting pipe and circumferentially sealed; the inner end portion of the third client pipeline component can be reliably and conveniently fixed together with the outer end portion of the third copper joint and circumferentially sealed.

[0033] The inner end portion of the second copper joint 3 is inserted into the outer end portion of the third connecting pipe 13 and is circumferentially welded and fixed and sealed by solder located between the outer side wall of the second copper joint 3 and the inner side wall of the third connecting pipe 13, and the inner end portion of the second client pipeline component 6 is inserted into the outer end portion of the second copper joint 3 and is circumferentially welded and fixed and sealed by solder located between the outer side wall of the second client pipeline component 6 and the inner side wall of the second copper joint 3; after adopting this structure, the inner end portion of the second copper joint can be reliably and conveniently fixed together with the outer end portion of the third connecting pipe and circumferentially sealed, and the inner end portion of the second client pipeline component can be reliably and conveniently fixed together with the outer end portion of the second copper joint and circumferentially sealed.

[0034] A four-way valve reversing valve, the four-way valve reversing valve includes the above-mentioned four-way valve reversing valve connecting pipe structure.

[0035] Embodiment 2

[0036] See Figure 3As shown, compared with the first embodiment, the difference in this embodiment lies in that: the four-way valve reversing valve connecting pipe structure further includes a bushing 8. The inner end and the outer end of the bushing 8 are respectively inserted into the outer end of the third connecting pipe 13 and the inner end of the second copper joint 3. The outer side wall of the bushing 8 is welded and fixed to the inner side walls of the third connecting pipe 13 and the second copper joint 3 through solder and sealed circumferentially. A fifth spacing H5 is formed between the inner end of the bushing 8 and the outer side wall of the valve body 1, and the fifth spacing H5 is less than or equal to the third spacing H3. By adopting this structure, the inner end of the second client pipeline component can be reliably and conveniently fixed to the outer end of the second copper joint and sealed circumferentially. Moreover, under the action of the bushing, the connection firmness between the second copper joint and the third connecting pipe can be improved, and the reliability of the circumferential seal between the second copper joint and the third connecting pipe can be improved. In addition, since the fifth spacing H5 is less than or equal to the third spacing H3, the welding influence caused by adjacent connecting pipes during welding can be further reduced, the solder joint failure can be avoided, the welding quality can be improved, and the connection between the connecting pipe and the joint can be made firm and materials can be saved.

[0037] Embodiment Three

[0038] See Figure 4 As shown, compared with the second embodiment, the difference in this embodiment lies in that: the outer end of the bushing 8 is inserted into the inner end of the second client pipeline component 6. The outer side wall of the outer end of the bushing 8 is welded and fixed to the inner side wall of the inner end of the second client pipeline component 6 through solder and sealed circumferentially. By adopting this structure, the fixing firmness and reliability between the second client pipeline component and the second copper joint can be further improved. Similarly, in this embodiment, the first spacing H1 is greater than the fourth spacing H4, the fourth spacing H4 is greater than the second spacing H2, the second spacing H2 is greater than the third spacing H3, and the third spacing H3 is greater than or equal to the fifth spacing H5. Thus, the welding influence caused by adjacent connecting pipes during welding can be further reduced, the solder joint failure can be avoided, the welding quality can be improved, and the connection between the connecting pipe and the joint can be made firm and materials can be saved.

[0039] Embodiment Four

[0040] See Figure 5-6As shown, compared with the third embodiment, the difference in this embodiment lies in that: a necked-down portion 81 is provided at the outer end of the bushing 8, and the necked-down portion 81 is inserted into the inner end of the second client pipeline fitting 6. The outer side wall of the necked-down portion 81 is welded and fixed to the inner side wall of the inner end of the second client pipeline fitting 6 by solder and sealed circumferentially. Through the arrangement of the necked-down portion, under the action of the necked-down portion, the outer end of the bushing can be inserted into the inner end of the second client pipeline fitting more reliably and conveniently, thereby facilitating the fixation of the outer end of the bushing to the second client pipeline fitting and improving the welding firmness between the outer end of the bushing and the inner end of the second client pipeline fitting. Similarly, in this embodiment, the first spacing H1 is greater than the fourth spacing H4, the fourth spacing H4 is greater than the second spacing H2, the second spacing H2 is greater than the third spacing H3, and the third spacing H3 is greater than or equal to the fifth spacing H5, so that the welding influence caused by adjacent pipe joints during welding can be further reduced, the solder joint failure can be avoided, the welding quality can be improved, and in addition, the connection between the pipe joint and the joint can be made firm and materials can be saved.

[0041] Embodiment Five

[0042] See Figure 7 As shown, compared with the second embodiment, the difference in this embodiment lies in that: the outer end of the bushing 8 abuts against the inner end of the second client pipeline fitting 6. By adopting this structure, since the outer end of the bushing abuts against the inner end of the second client pipeline fitting, the limiting effect on the second client pipeline fitting can be achieved. That is, when the inner end of the second client pipeline fitting and the outer end of the second copper joint are welded and fixed, it is convenient to fix the connection between the second client pipeline fitting and the second copper joint. Similarly, in this embodiment, the first spacing H1 is greater than the fourth spacing H4, the fourth spacing H4 is greater than the second spacing H2, the second spacing H2 is greater than the third spacing H3, and the third spacing H3 is greater than or equal to the fifth spacing H5, so that the welding influence caused by adjacent pipe joints during welding can be further reduced, the solder joint failure can be avoided, the welding quality can be improved, and in addition, the connection between the pipe joint and the joint can be made firm and materials can be saved.

[0043] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A four-way valve reversing valve connection structure includes a first connection pipe (11), a second connection pipe (12), a third connection pipe (13), and a fourth connection pipe (14) connected to the valve body (1) of the four-way valve reversing valve; the second connection pipe (12), the third connection pipe (13), and the fourth connection pipe (14) are parallel and arranged at intervals in sequence, and the outer ends of the second connection pipe (12), the third connection pipe (13), and the fourth connection pipe (14) are respectively welded to connect a first copper joint (2), a second copper joint (3), and a third copper joint (4), and the outer ends of the first copper joint (2), the second copper joint (3), and the third copper joint (4) are respectively welded to connect a first client pipeline component (5), a second client pipeline component (6), and a third client pipeline component (7); characterized in that: The first copper joint (2) and the second connecting pipe (12) form a first welding position, the third copper joint (4) and the fourth connecting pipe (14) form a second welding position, the second copper joint (3) and the third connecting pipe (13) form a third welding position, and the first welding position, the second welding position and the third welding position are distributed in a staggered manner along the axial direction of the third connecting pipe (13).

2. The four-way valve reversing valve connecting pipe structure according to claim 1, characterized in that: A first spacing H1 is formed between the outer end of the first copper joint (2) and the outer side wall of the valve body (1) and between the outer end of the third copper joint (4) and the outer side wall of the valve body (1); a second spacing H2 is formed between the inner end of the second copper joint (3) and the outer side wall of the valve body (1); a third spacing H3 is formed between the outer end of the second connecting pipe (12) and the outer side wall of the valve body (1) and between the outer end of the fourth connecting pipe (14) and the outer side wall of the valve body (1); a fourth spacing H4 is formed between the inner end of the first client pipeline fitting (5) and the outer side wall of the valve body (1) and between the inner end of the third client pipeline fitting (7) and the outer side wall of the valve body (1); the first spacing H1 is greater than the fourth spacing H4, the fourth spacing H4 is greater than the second spacing H2, and the second spacing H2 is greater than the third spacing H3.

3. The four-way valve reversing valve connecting pipe structure according to claim 1 or 2, characterized in that: The inner end of the first copper joint (2) is inserted into the outer end of the second connecting pipe (12) and is circumferentially welded and fixed and sealed by solder located between the outer side wall of the first copper joint (2) and the inner side wall of the second connecting pipe (12); the inner end of the first client pipeline fitting (5) is inserted into the outer end of the first copper joint (2) and is circumferentially welded and fixed and sealed by solder located between the outer side wall of the first client pipeline fitting (5) and the inner side wall of the first copper joint (2).

4. The four-way valve reversing valve connection structure according to claim 1 or 2, characterized in that: The inner end of the third copper joint (4) is inserted into the outer end of the fourth connecting pipe (14) and is circumferentially welded and fixed and sealed by solder located between the outer side wall of the third copper joint (4) and the inner side wall of the fourth connecting pipe (14); the inner end of the third client pipeline fitting (7) is inserted into the outer end of the third copper joint (4) and is circumferentially welded and fixed and sealed by solder located between the outer side wall of the third client pipeline fitting (7) and the inner side wall of the third copper joint (4).

5. The four-way valve reversing valve connecting pipe structure according to claim 2, characterized in that: The inner end of the second copper joint (3) is inserted into the outer end of the third connecting pipe (13) and is circumferentially welded and fixed and sealed by solder located between the outer side wall of the second copper joint (3) and the inner side wall of the third connecting pipe (13), and the inner end of the second client pipeline fitting (6) is inserted into the outer end of the second copper joint (3) and is circumferentially welded and fixed and sealed by solder located between the outer side wall of the second client pipeline fitting (6) and the inner side wall of the second copper joint (3).

6. The four-way valve reversing valve connecting pipe structure according to claim 5, characterized in that: The four-way valve reversing valve connecting pipe structure further includes a bushing (8). The inner end and the outer end of the bushing (8) are respectively inserted into the outer end of the third connecting pipe (13) and the inner end of the second copper joint (3). The outer side wall of the bushing (8) is welded and fixed to the inner side walls of the third connecting pipe (13) and the second copper joint (3) by solder and sealed circumferentially. A fifth spacing H5 is formed between the inner end of the bushing (8) and the outer side wall of the valve body (1), and the fifth spacing H5 is less than or equal to the third spacing H3.

7. The four-way valve reversing valve connecting pipe structure according to claim 6, characterized in that: The outer end of the bushing (8) is inserted into the inner end of the second client pipeline fitting (6). The outer side wall of the outer end of the bushing (8) is welded and fixed to the inner side wall of the inner end of the second client pipeline fitting (6) by solder and sealed circumferentially.

8. The four-way valve reversing valve connecting pipe structure according to claim 7, characterized in that: A necking portion (81) is provided on the outer end of the bushing (8). The necking portion (81) is inserted into the inner end of the second client pipeline fitting (6). The outer side wall of the necking portion (81) is welded and fixed to the inner side wall of the inner end of the second client pipeline fitting (6) by solder and sealed circumferentially.

9. The four-way valve reversing valve connection structure according to claim 6, characterized in that: The outer end of the bushing (8) abuts against the inner end of the second client pipeline fitting (6).

10. A four-way valve reversing valve, characterized in that: The four-way valve reversing valve includes the four-way valve reversing valve connecting pipe structure according to any one of claims 1-9.

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