Connecting pipe structure and four-way reversing valve with same

Abstract

The utility model provides a connecting pipe structure and a four-way reversing valve with the connecting pipe structure, the connecting pipe structure comprises a pipe joint made of stainless steel materials and a connecting pipe made of copper materials, one end of the connecting pipe is connected with the connecting end of the pipe joint in an inserting mode, and an adhesion layer made of copper materials is arranged on the surface, making contact with the connecting pipe, of the pipe joint. One end of the connecting pipe is welded and fixed with the adhesion layer; the connecting structure of the connector D and the connecting pipe, the connecting structure of the connector E and the connecting pipe, the connecting structure of the connector S and the connecting pipe and the connecting structure of the connector C and the connecting pipe of the four-way reversing valve all adopt the connecting pipe structures. The welding difficulty of the pipe joint and the connecting pipe can be reduced, the welding quality is high, the problem that the stainless steel pipe joint and the copper connecting pipe are not easy to weld is solved, the welding firmness of the pipe joint and the connecting pipe is high, and in addition, the pipe joint has the advantages of being simple in structure and low in welding cost.

Description

Technical Field

[0001] The utility model relates to the technical field of four-way reversing valves, in particular to a connecting pipe structure and a four-way reversing valve having the same. Background Art

[0002] Four-way reversing valves are mainly used in heat pump air conditioners, water heaters and other systems. They are mainly used to switch the flow direction of the refrigerant flow channel in the system, thereby realizing the cooling, heating, defrosting and other functions of the entire system;

[0003] In traditional technology, the stainless steel joint of the four-way reversing valve is connected to the copper pipe mainly through welding, that is, the end of the copper pipe is inserted into the stainless steel joint, and welding is required between the inner wall of the stainless steel joint and the front end of the copper pipe, and between the end of the stainless steel joint and the outer wall of the copper pipe to fix the stainless steel joint and the copper pipe. However, this welding process is relatively cumbersome, the welding technology is difficult, and it requires a large amount of copper material, which is costly. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a connecting pipe structure and a four-way reversing valve having the same, which can reduce the difficulty of welding the pipe joint and the connecting pipe, and has high welding quality, solves the problem that the stainless steel pipe joint and the copper connecting pipe are not easy to weld, and makes the welding firmness of the pipe joint and the connecting pipe high. In addition, it also has the advantages of simple structure and low welding cost.

[0005] The utility model provides a connecting pipe structure, comprising a pipe joint made of stainless steel material and a connecting pipe made of copper material, one end of the connecting pipe is plug-connected with the connecting end of the pipe joint, an adhesion layer made of copper material is arranged on the surface where the pipe joint contacts the connecting pipe, and one end of the connecting pipe is fixed to the adhesion layer by welding.

[0006] The utility model provides an adhesion layer made of copper material on the surface where the pipe joint contacts the connecting pipe, so that the connecting pipe made of copper material can be conveniently welded and fixed together with the adhesion layer made of copper material, that is, the welding difficulty of the pipe joint and the connecting pipe can be reduced, and the welding quality is high, which solves the problem that the stainless steel pipe joint and the connecting pipe of copper material are not easy to weld, so that the welding firmness of the pipe joint and the connecting pipe is high. In addition, it also has the advantages of simple structure and low welding cost.

[0007] In a possible embodiment, an adhesion layer is formed on the inner circumferential wall of the pipe joint, and one end of the connecting pipe is inserted into the connecting end of the pipe joint; by adopting this structure, the adhesion layer is formed on the inner wall of the pipe joint by a copper material spraying and sintering process, and after one end of the connecting pipe is inserted into the connecting end of the pipe joint, one end of the connecting pipe can be welded and fixed to the adhesion layer by solder to achieve fixation of one end of the connecting pipe to the connecting end of the pipe joint.

[0008] In a possible embodiment, a first ring-shaped reducing portion is provided on the side wall of the connecting end of the pipe joint, and one end of the connecting pipe abuts against the first reducing portion; by adopting this structure, after one end of the connecting pipe is inserted into the connecting end of the pipe joint, the one end of the connecting pipe can abut against the first reducing portion, thereby achieving the limitation of the connecting pipe and the pipe joint, and prompting the assembler that the connecting pipe and the pipe joint have been plugged in place.

[0009] In a possible embodiment, a ring-shaped flared portion is provided at the outer end of the connecting end of the pipe joint, and a ring-shaped weld is formed between the inner side wall of the flared portion and the outer side wall of the connecting pipe; by adopting this structure, under the action of the flared portion, when one end of the connecting pipe is plugged into the connecting end of the pipe joint, the flared portion can cooperate and guide with one end of the connecting pipe to facilitate the insertion of one end of the connecting pipe into the connecting end of the pipe joint, that is, it can facilitate the plugging of one end of the connecting pipe and the connecting end of the pipe joint, and under the action of the flared portion, the solder can enter between the connecting pipe and the attachment layer through the gap between the flared portion and one end of the connecting pipe, thereby facilitating the welding of one end of the connecting pipe and the attachment layer, in addition, a ring-shaped weld is formed between the inner side wall of the flared portion and the outer side wall of the connecting pipe, and the solder located in the weld can further realize the welding fixation of one end of the connecting pipe and the attachment layer, so as to further improve the welding firmness.

[0010] In one possible embodiment, an adhesion layer is formed on the inner circumferential wall of the pipe joint, the outer circumferential wall of the pipe joint and the outer end of the connecting end of the pipe joint to wrap the pipe joint; by adopting this structure, the adhesion layer made of copper material can wrap the pipe joint made of stainless steel, thereby improving the corrosion resistance of the pipe joint.

[0011] In a possible embodiment, the adhesion layer is formed on the outer peripheral wall of the pipe joint, and one end of the connecting pipe is sleeved on the outside of the connecting end of the pipe joint; by adopting this structure, the adhesion layer is formed on the outer peripheral wall of the pipe joint through a copper material spraying and sintering process, and after one end of the connecting pipe is sleeved on the connecting end of the pipe joint, the one end of the connecting pipe can be welded and fixed to the adhesion layer by solder to achieve fixation of one end of the connecting pipe to the connecting end of the pipe joint.

[0012] In a possible embodiment, a second ring-shaped reducing portion is provided on the side wall of the connecting end of the pipe joint, and one end of the connecting pipe abuts against the second reducing portion; by adopting this structure, after one end of the connecting pipe is sleeved onto the connecting end of the pipe joint, the one end of the connecting pipe can abut against the second reducing portion, thereby achieving the limitation of the connecting pipe and the pipe joint, and prompting the assembler that the connecting pipe and the pipe joint have been sleeved in place.

[0013] A four-way reversing valve, wherein the connection structure between the D joint and the connecting pipe, the connection structure between the E joint and the connecting pipe, the connection structure between the S joint and the connecting pipe, and the connection structure between the C joint and the connecting pipe of the four-way reversing valve all adopt any form of the connecting pipe structure as above; by adopting this method, the D joint and the connecting pipe of the four-way reversing valve, the E joint and the connecting pipe of the four-way reversing valve, the S joint and the connecting pipe of the four-way reversing valve, and the C joint and the connecting pipe of the four-way reversing valve can all be conveniently welded and fixed together, that is, the welding efficiency can be improved and the welding difficulty can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the cross-sectional structure when the connecting pipe structure adopts the technical solution of the first embodiment;

[0015] Figure 2 It is a schematic cross-sectional view of the connecting pipe structure when the technical solution of the second embodiment is adopted;

[0016] Figure 3 It is a schematic cross-sectional view of the structure when the connecting pipe structure adopts the technical solution of the third embodiment;

[0017] Figure 4 It is a schematic cross-sectional view of the structure when the connecting pipe structure adopts the technical solution of the fourth embodiment;

[0018] Figure 5 It is a schematic cross-sectional view of the structure when the connecting pipe structure adopts the technical solution of the fifth embodiment;

[0019] Figure 6 It is a structural schematic diagram of a four-way reversing valve. DETAILED DESCRIPTION

[0020] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0021] In the description of the embodiments of the present 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 ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0022] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0023] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Embodiment 1

[0025] See also Figure 1 As shown, an embodiment of the present application discloses a connecting pipe structure, including a pipe joint 1 made of stainless steel material and a connecting pipe 2 made of copper material, one end of the connecting pipe 2 is plug-connected to the connecting end of the pipe joint 1, an adhesion layer 3 made of copper material is provided on the surface where the pipe joint 1 contacts the connecting pipe 2, and one end of the connecting pipe 2 is welded and fixed to the adhesion layer 3.

[0026] See again Figure 1 As shown, the adhesion layer 3 is formed on the inner circumferential wall of the pipe joint 1, and one end of the connecting pipe 2 is inserted into the connecting end of the pipe joint 1; by adopting this structure, the adhesion layer is formed on the inner wall of the pipe joint through the copper material spraying and sintering process, and after one end of the connecting pipe is inserted into the connecting end of the pipe joint, the one end of the connecting pipe can be welded and fixed to the adhesion layer by solder to achieve the fixation of one end of the connecting pipe and the connecting end of the pipe joint.

[0027] Embodiment 2

[0028] See also Figure 2As shown, what is different from the first embodiment is that a first ring-shaped reducing portion 11 is provided on the side wall of the connecting end of the pipe joint 1, and one end of the connecting pipe 2 abuts against the first reducing portion 11; by adopting this structure, after one end of the connecting pipe is inserted into the connecting end of the pipe joint, the one end of the connecting pipe can abut against the first reducing portion, thereby limiting the connecting pipe and the pipe joint, and prompting the assembler that the connecting pipe and the pipe joint have been plugged in place.

[0029] See again Figure 2 As shown, a ring-shaped flared portion 12 is provided at the outer end of the connecting end of the pipe joint 1, and a ring-shaped weld 13 is formed between the inner side wall of the flared portion 12 and the outer side wall of the connecting pipe 2; after adopting this structure, under the action of the flared portion, when one end of the connecting pipe is plugged into the connecting end of the pipe joint, the flared portion can cooperate with the one end of the connecting pipe to guide so as to facilitate the insertion of the one end of the connecting pipe into the connecting end of the pipe joint, that is, it can bring convenience to the plugging of the one end of the connecting pipe and the connecting end of the pipe joint, and under the action of the flared portion, the solder can enter between the connecting pipe and the attachment layer through the gap between the flared portion and one end of the connecting pipe, thereby facilitating the welding of one end of the connecting pipe and the attachment layer, in addition, a ring-shaped weld is formed between the inner side wall of the flared portion and the outer side wall of the connecting pipe, and the solder located in the weld can further realize the welding and fixation of one end of the connecting pipe and the attachment layer, so as to further improve the welding firmness.

[0030] Embodiment 3

[0031] See also Figure 3 As shown, what is different from the second embodiment is that the adhesion layer 3 is formed on the inner peripheral wall of the pipe joint 1, the outer peripheral wall of the pipe joint 1 and the outer end of the connecting end of the pipe joint 1 to form a wrapping of the pipe joint 1; by adopting this structure, the adhesion layer made of copper material can wrap the pipe joint made of stainless steel, thereby improving the corrosion resistance of the pipe joint.

[0032] Embodiment 4

[0033] See also Figure 4 As shown, the difference from the first embodiment is that the adhesion layer 3 is formed on the outer peripheral wall of the pipe joint 1, and one end of the connecting pipe 2 is sleeved on the outside of the connecting end of the pipe joint 1; after adopting this structure, the adhesion layer is formed on the outer peripheral wall of the pipe joint by a copper material spraying and sintering process, and after one end of the connecting pipe is sleeved on the connecting end of the pipe joint, one end of the connecting pipe can be welded and fixed to the adhesion layer by solder to achieve the fixation of one end of the connecting pipe to the connecting end of the pipe joint.

[0034] Embodiment 5

[0035] See also Figure 5As shown, what is different from the fourth embodiment is that a ring-shaped second reducing portion 14 is provided on the side wall of the connecting end of the pipe joint 1, and one end of the connecting pipe 2 abuts against the second reducing portion 14; by adopting this structure, after one end of the connecting pipe is sleeved on the connecting end of the pipe joint, the one end of the connecting pipe can abut against the second reducing portion, thereby limiting the connecting pipe and the pipe joint, and prompting the assembler that the connecting pipe and the pipe joint have been sleeved in place.

[0036] Embodiment 6

[0037] See also Figure 6 As shown, a four-way reversing valve, the connection structure between the D joint 41 and the connecting pipe of the four-way reversing valve 4, the connection structure between the E joint 42 and the connecting pipe, the connection structure between the S joint 43 and the connecting pipe, and the connection structure between the C joint 44 and the connecting pipe all adopt the connecting pipe structure of any of the above embodiments; by adopting this method, the D joint and the connecting pipe of the four-way reversing valve, the E joint and the connecting pipe of the four-way reversing valve, the S joint and the connecting pipe of the four-way reversing valve, and the C joint and the connecting pipe of the four-way reversing valve can all be conveniently welded and fixed together, that is, the welding efficiency can be improved, and the welding difficulty can be reduced.

[0038] The above is only a specific implementation 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 a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A pipe connection structure, comprising a pipe joint (1) made of stainless steel and a connecting pipe (2) made of copper, characterized in that: One end of the connecting pipe (2) is plug-connected to the connecting end of the pipe joint (1); an adhesion layer (3) made of copper material is provided on the surface of the pipe joint (1) in contact with the connecting pipe (2); and one end of the connecting pipe (2) is fixed to the adhesion layer (3) by welding.

2. The connecting pipe structure according to claim 1, characterized in that: The adhesion layer (3) is formed on the inner peripheral wall of the pipe joint (1), and one end of the connecting pipe (2) is inserted into the connecting end of the pipe joint (1).

3. The connecting pipe structure according to claim 2, characterized in that: A first diameter reducing portion (11) in an annular shape is provided on the side wall of the connecting end of the pipe joint (1), and one end of the connecting pipe (2) abuts against the first diameter reducing portion (11).

4. The connecting pipe structure according to claim 2 or 3, characterized in that: An annular flared portion (12) is provided at the outer end of the connection end of the pipe joint (1), and an annular weld (13) is formed between the inner side wall of the flared portion (12) and the outer side wall of the connection pipe (2).

5. The connecting pipe structure according to claim 4, characterized in that: The adhesion layer (3) is formed on the inner peripheral wall of the pipe joint (1), the outer peripheral wall of the pipe joint (1) and the outer end of the connecting end of the pipe joint (1) to wrap the pipe joint (1).

6. The connecting pipe structure according to claim 1, characterized in that: The adhesion layer (3) is formed on the outer peripheral wall of the pipe joint (1), and one end of the connecting pipe (2) is sleeved on the outside of the connecting end of the pipe joint (1).

7. The connecting pipe structure according to claim 6, characterized in that: A second diameter reducing portion (14) in the shape of a ring is provided on the side wall of the connection end of the pipe joint (1), and one end of the connection pipe (2) abuts against the second diameter reducing portion (14).

8. A four-way reversing valve, characterized in that: The connection structure between the D connector (41) and the connecting pipe, the connection structure between the E connector (42) and the connecting pipe, the connection structure between the S connector (43) and the connecting pipe, and the connection structure between the C connector (44) and the connecting pipe of the four-way reversing valve (4) all adopt the connecting pipe structure as described in any one of claims 1 to 7.

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