WO2023078363A1

WO2023078363A1 - Pipe assembly and four-way valve provided with same

Info

Publication number: WO2023078363A1
Application number: PCT/CN2022/129618
Authority: WO
Inventors: 朱佳峰
Original assignee: 浙江盾安人工环境股份有限公司
Priority date: 2021-11-03
Filing date: 2022-11-03
Publication date: 2023-05-11
Also published as: KR20240065196A; CN216743242U

Abstract

Disclosed is a pipe assembly, comprising a valve pipe (10), having a fixed end (101) and a free end (102) which are oppositely arranged; and a sleeve (20), having a first matching end (201) and a second matching end (202) which are oppositely arranged, the first matching end (201) being matched with and fixed to the free end (102), the second matching end (202) being configured to be fitted over the outer side of a pipe to be connected (30) and being welded and fixed to the pipe to be connected (30), the sleeve (20) being provided with a spacing section (21), the spacing section (21) being located between the first matching end (201) and the second matching end (202), and the inner diameter of at least part of the spacing section (21) being smaller than the outer diameter of the pipe to be connected (30). Further disclosed is a four-way valve provided with the pipe assembly. Therefore, the problem in the prior art that overlap is prone to falling into a valve body is solved.

Description

Tube assembly and four-way valve with it

This application claims the priority of the patent application with the application number 202122707934.7 and the invention title "pipe assembly and four-way valve with it" submitted to the State Intellectual Property Office of China on November 03, 2021.

technical field

The present application relates to the field of four-way valves, in particular, to a pipe assembly and a four-way valve having the same.

Background technique

The four-way valve is an indispensable component in refrigeration equipment, and the four-way valve generally includes a body part and a pipe assembly communicating with the body part. Wherein, the body part communicates with the pipe fittings in the refrigeration system through the pipe assembly, and usually, the pipe assembly and the pipe fittings in the refrigeration system are fixed by welding. In the process of welding and fixing the pipe assembly and the pipe fittings in the refrigeration system, welding spatula may be formed, and the hidden danger of the solder spatter falling into the main body is likely to occur, affecting the normal operation of the four-way valve.

Contents of the invention

The present application provides a pipe assembly and a four-way valve with the same, to solve the problem in the prior art that the welding flash is easy to fall into the body.

According to one aspect of the present application, there is provided a tube assembly, which includes: a valve tube, the valve tube has a fixed end and a free end arranged oppositely; a sleeve, the sleeve has a first mating end and a second mating end oppositely arranged , the first mating end is matched and fixed with the free end, the second mating end is used to be sleeved on the outside of the pipe to be connected and welded and fixed with the pipe to be connected, the sleeve has a spacer, and the spacer is located between the first mating end and the second mating Between the ends, at least part of the inner diameter of the spacer is smaller than the outer diameter of the tubes to be connected.

Applying the technical solution of this application, the end of the pipe to be connected is pierced in the second matching end of the sleeve, and then the solder is placed between the outer wall of the pipe to be connected and the inner wall of the second matching end to heat the whole In order to melt the solder, the welding between the sleeve and the pipe to be connected is completed. Since there is a spacer section between the first mating end and the second mating end, when the solder is placed too much, the excess solder may form solder bumps, and the formed solder bumps slide along the inner wall of the second mating end and can be attached to the spacer section Up, so that the welding flash can be stopped to prevent the welding flash from sliding into the valve body. Compared with the traditional technical solution, the setting of the spacer section can play a role in blocking the welding bump, preventing the welding bump from falling into the body of the four-way valve, thereby ensuring the normal operation of the four-way valve.

Further, the spacer section includes a straight pipe section, the straight pipe section has a first end and a second end oppositely arranged, the inner diameter of the straight pipe section is smaller than the outer diameter of the pipe to be connected, the first end is connected to the first matching end, and the second end is connected to the second end. Two mating ends are connected. The arrangement of the straight pipe section has a simple structure and facilitates the processing and forming of the casing.

Further, the spacer section also includes a first transition section, the first transition section is located between the straight pipe section and the second fitting end, and the inner diameter of the first transition section gradually decreases from the second fitting end to the straight pipe section. The above arrangement can limit the distance of the connecting pipe extending into the casing, which is convenient for the staff to control the depth of the connecting pipe extending into the casing.

Further, the first transition section is a tapered structure, and the taper angle of the first transition section is set between 15° and 30°. Setting the taper angle of the first transition section within the above range can facilitate the processing and shaping of the sleeve and ensure the structural strength of the sleeve.

Further, the spacer section also includes a second transition section, and the two ends of the second transition section are respectively connected to the straight pipe section and the first matching end. The above arrangement can facilitate the processing and shaping of the casing, and can increase the structural strength of the casing.

Further, the wall thickness of the spacer section, the wall thickness of the first matching end and the wall thickness of the second matching end are equal. Such arrangement can facilitate the processing and molding of the casing.

Further, the inner wall of the spacer section is provided with a ring-shaped protruding structure, and the surface of the protruding structure is a circular arc structure. Such setting facilitates the processing and molding of the casing.

According to another aspect of the present application, a four-way valve is provided, which includes a body and the above-mentioned pipe assembly, and the pipe assembly is arranged in communication with the body.

Description of drawings

The accompanying drawings constituting a part of the present application are used to provide further understanding of the present application, and the schematic embodiments and descriptions of the present application are used to explain the present application, and do not constitute improper limitations to the present application. In the attached picture:

Fig. 1 shows a schematic structural diagram of the assembly of the pipe assembly provided by Embodiment 1 of the present application and the pipe to be connected;

Figure 2 shows a cross-sectional view of the assembly of the pipe assembly provided by Embodiment 1 of the present application and the pipe to be connected;

Figure 3 shows a cross-sectional view of the assembly of the pipe assembly provided in Embodiment 2 of the present application and the pipe to be connected;

Figure 4 shows a cross-sectional view of the assembly of the pipe assembly provided by Embodiment 3 of the present application and the pipe to be connected;

FIG. 5 shows a schematic structural diagram of the four-way valve provided in Embodiment 4 of the present application.

Wherein, the above-mentioned accompanying drawings include the following reference signs:

10, valve tube; 101, fixed end; 102, free end;

20. Sleeve; 201. The first mating end; 202. The second mating end;

21, interval section; 211, straight pipe section; 212, first transition section; 213, second transition section;

30. The pipe to be connected;

1. Body.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the application, its application or uses. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

As shown in FIGS. 1 and 2 , Embodiment 1 of the present application provides a tube assembly, which includes a valve tube 10 and a sleeve 20 . The valve tube 10 has a fixed end 101 and a free end 102 disposed opposite to each other. The sleeve 20 has a first mating end 201 and a second mating end 202 that are arranged oppositely. The first mating end 201 is fixed in cooperation with the free end 102. The second mating end 202 is used to be sleeved on the outside of the pipe 30 to be connected and to be connected to the pipe to be connected. The connecting pipe 30 is welded and fixed. The sleeve 20 has a spacer section 21 located between the first mating end 201 and the second mating end 202 . At least part of the inner diameter of the spacer section 21 is smaller than the outer diameter of the pipe 30 to be connected.

Applying the technical solution of the present application, the end of the pipe 30 to be connected is pierced in the second mating end 202 of the sleeve 20, and then solder is placed between the outer wall of the pipe 30 to be connected and the inner wall of the second mating end 202 During this time, the whole body is heated to melt the solder, and the welding between the sleeve 20 and the pipe 30 to be connected is completed. Since the spacer section 21 is arranged between the first mating end 201 and the second mating end 202, when the solder is placed too much, the excess solder may form weld bumps, and the formed solder bumps slide down along the inner wall of the second mating end 202 and Attached to spacer segment 21. Compared with the traditional technical solution, the spacer section 21 spaces apart the first mating end 201 and the second mating end 202, and the inner diameter of the spacer section 21 is smaller than the outer diameter of the pipe 30 to be connected, so the spacer section 21 can be welded. The role of the barrier prevents the welding spar from falling into the body 1 of the four-way valve, thereby ensuring the normal operation of the four-way valve. Moreover, the setting of the spacer section 21 has a simple structure and low manufacturing cost.

Further, the spacer section 21 includes a straight pipe section 211, the straight pipe section 211 has a first end and a second end oppositely arranged, the inner diameter of the straight pipe section 211 is smaller than the outer diameter of the pipe 30 to be connected, and the first end is connected to the first mating end 201 , the second end is connected to the second mating end 202 . In this embodiment, the inner diameter of the straight pipe section 211 is smaller than the inner diameter of the second matching end 202 . Specifically, the first mating end 201, the straight pipe section 211, and the second mating end 202 are coaxially arranged, and when the sleeve pipe 20 and the pipe 30 to be connected are welded, the welding spars formed during the welding process spread on the inner wall of the straight pipe section 211 And attached to the inner wall of the straight pipe section 211. The inner wall of the straight pipe section 211 forms an annular attachment surface for the attachment of the welding flash. The formation of the annular attachment surface can ensure the uniformity of the welding flash diffusion and increase the contact area between the welding flash and the attachment surface, thereby ensuring the stability of the welding flash attachment Sex, reduce the phenomenon of weld flash drop.

Wherein, the straight pipe section 211 may be formed by a stepped structure. When the straight pipe section 211 is formed by a stepped structure, the casing 20 is a stepped tubular structure as a whole, the inner diameter of the first matching end 201 is equal to the inner diameter of the second matching end 202, and both are larger than the inner diameter of the straight pipe section 211, and the inner diameter of the straight pipe section 211 The inner diameter is larger than the outer diameter of the pipe 30 to be connected.

In this embodiment, the spacer section 21 also includes a first transition section 212, the first transition section 212 is located between the straight pipe section 211 and the second fitting end 202, and the inner diameter of the first transition section 212 is from the second fitting end 202 to the straight pipe section The direction of 211 gradually decreases. Such setting makes the inner diameter of at least part of the first transition section 212 smaller than the outer diameter of the pipe to be connected 30, after the end of the pipe to be connected 30 is passed through the casing 20, the end of the pipe to be connected 30 and the first transition section The inner walls of 212 are in contact with each other. At this time, the first transition section 212 restricts the displacement of the pipe 30 to be connected into the casing 20, so as to avoid the contact between the pipe 30 to be connected and the straight pipe section 211, which is convenient for welding personnel to control the extension of the pipe 30 to be connected. into the depth of casing 20. Specifically, the second matching end 202 , the first transition section 212 and the straight pipe section 211 are integrally formed, so that the strength of the overall structure of the casing 20 can be ensured.

Wherein, the sidewall of the first transition section 212 may be set as an inclined surface or an arc surface. In this embodiment, the sidewall of the first transition section 212 is an inclined surface. As shown in FIG. 2 , the first transition section 212 is a tapered structure, and the taper angle of the first transition section 212 is set between 15° and 30°. When the taper angle is less than 15°, the length of the first transition section 212 along the axial direction is too long, resulting in waste of material; If the angle is too large, the structural strength of the connection between the first transition section 212 and the second mating end 202 cannot be guaranteed. Therefore, in this solution, setting the taper angle of the first transition section 212 within the above range can avoid waste of raw materials. , can also ensure the overall structural strength of the casing 20 .

In this embodiment, the first mating end 201 of the sleeve 20 is sheathed on the outer periphery of the free end 102 of the valve tube 10 and welded with the free end 102 of the valve tube 10 . Further, the inner diameter of the straight pipe section 211 is smaller than the inner diameter of the free end 102 . It is set so that when the valve tube 10 and the sleeve 20 are assembled, the spacer section 21 can limit the distance that the free end 102 of the valve tube 10 extends into the sleeve 20 , so that the gap between the valve tube 10 and the sleeve 20 can be realized. The fast positioning between them ensures the installation accuracy of the valve tube 10 and the bushing 20.

Specifically, the spacer section 21 further includes a second transition section 213 , and two ends of the second transition section 213 are respectively connected to the straight pipe section 211 and the first fitting end 201 . The straight pipe section 211 and the first fitting end 201 are transitionally connected through the second transition section 213, and the first fitting end 201, the second transition section 213 and the straight pipe section 211 are integrally formed, so that the processing and forming of the casing 20 is facilitated. , can also ensure the structural strength of the casing 20 .

Further, the inner diameter of the second transition section 213 decreases gradually along the direction from the first matching end 201 to the straight pipe section 211 . When the free end 102 of the valve tube 10 is installed in the casing 20, the second transition section 213 can limit the displacement of the valve tube 10 extending into the inside of the casing 20, and improve the matching accuracy between the valve tube 10 and the casing 20 .

Further, the wall thickness of the spacer section 21 , the wall thickness of the first matching end 201 and the wall thickness of the second matching end 202 are equal. Such an arrangement can facilitate integral processing and molding of the casing 20 . Specifically, in the process of forming the sleeve 20, the two ends of the sleeve 20 that are used to cooperate with the pipe 30 to be connected can be reamed. After the reaming, the two ends of the sleeve 20 are respectively A first fitting end 201 and a second fitting end 202 are formed, a straight pipe section 211 is formed in the middle of the sleeve 20, a first transition section 212 is formed at a position between the second fitting end 202 and the straight pipe section 211, and the first fitting end 201 and the straight pipe section 211 are formed. The portion between the straight pipe sections 211 forms a second transition section 213 . Such setting facilitates the processing and shaping of the sleeve 20 , and enables the first matching end 201 , the spacer section 21 and the second matching end 202 to form an integrated structure, thereby ensuring the overall structural strength of the sleeve 20 .

As shown in Figure 3, Embodiment 2 of the present application provides a pipe assembly. The difference from Embodiment 1 is that the spacer section 21 in this embodiment is a tapered structure, and the inner diameter of the spacer section 21 is determined by the second The fitting end 202 decreases gradually to the first fitting end 201 , specifically when the pipe assembly is assembled, there is a distance between the end of the valve pipe 10 and the spacer section 21 .

As shown in Figure 4, Embodiment 3 of the present application provides a pipe assembly. The difference from Embodiment 1 is that in this embodiment, the inner wall of the spacer section 21 of the sleeve 20 is provided with a ring-shaped convex structure. The surface of the structure is a circular arc structure. Specifically, during the assembly process, the peripheral surface of the protruding structure abuts against the end of the pipe 30 to be connected, and there is a gap between the protruding structure and the end of the first mating end 201 close to the second mating end 202 . Specifically, during the process of forming the sleeve 20, the middle part of the sleeve 20 can be necked down to form a convex structure. With such arrangement, the raised structure can block the welding flashes formed during the welding process, preventing the welding flashes from falling into the body 1 of the four-way valve.

As shown in FIG. 5 , Embodiment 4 of the present application provides a four-way valve, which includes a body 1 and the pipe assembly in Embodiment 1 above, and the pipe assembly communicates with the body 1 . Specifically, the fixed end 101 of the valve tube 10 communicates with the body 1 .

It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and/or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and/or combinations thereof.

The relative arrangements of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. At the same time, it should be understood that, for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the Authorized Specification. In all examples shown and discussed herein, any specific values should be construed as illustrative only, and not as limiting. Therefore, other examples of the exemplary embodiment may have different values. It should be noted that like numerals and letters denote like items in the following figures, therefore, once an item is defined in one figure, it does not require further discussion in subsequent figures.

In the description of the present application, it should be understood that orientation words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" etc. indicate the orientation Or positional relationship is generally based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description. In the absence of a contrary statement, these orientation words do not indicate or imply the device or element referred to It must have a specific orientation or be constructed and operated in a specific orientation, so it should not be construed as limiting the protection scope of the present application; the orientation words "inner and outer" refer to the inner and outer relative to the outline of each component itself.

For the convenience of description, spatially relative terms may be used here, such as "on ...", "over ...", "on the surface of ...", "above", etc., to describe the The spatial positional relationship between one device or feature shown and other devices or features. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, devices described as "above" or "above" other devices or configurations would then be oriented "beneath" or "above" the other devices or configurations. under other devices or configurations”. Thus, the exemplary term "above" can encompass both an orientation of "above" and "beneath". The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptions used herein interpreted accordingly.

In addition, it should be noted that the use of words such as "first" and "second" to define components is only for the convenience of distinguishing corresponding components. To limit the protection scope of this application.

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, there may be various modifications and changes in the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims

A pipe assembly, characterized in that the pipe assembly comprises:

A valve tube (10), the valve tube (10) has a fixed end (101) and a free end (102) arranged opposite to each other;

A sleeve (20), the sleeve (20) has a first mating end (201) and a second mating end (202) oppositely arranged, the first mating end (201) and the free end (102) Cooperate and fix, the second matching end (202) is used to be sleeved on the outside of the pipe to be connected (30) and welded and fixed with the pipe to be connected (30), the sleeve (20) has a spacer (21), The spacer section (21) is located between the first mating end (201) and the second mating end (202), and at least part of the inner diameter of the spacer section (21) is smaller than the pipe to be connected (30) the outer diameter.
The pipe assembly according to claim 1, characterized in that, the spacer section (21) comprises a straight pipe section (211), the straight pipe section (211) has a first end and a second end oppositely arranged, and the straight pipe section (211) The inner diameter of the pipe section (211) is smaller than the outer diameter of the pipe to be connected (30), the first end is connected to the first mating end (201), and the second end is connected to the second mating end (202 )connect.
The pipe assembly according to claim 2, characterized in that, the spacer section (21) further comprises a first transition section (212), and the first transition section (212) is located between the straight pipe section (211) and the Between the second fitting end (202), the inner diameter of the first transition section (212) gradually decreases from the second fitting end (202) to the straight pipe section (211).
The pipe assembly according to claim 3, characterized in that, the first transition section (212) is a conical structure, and the cone angle of the first transition section (212) is set between 15° and 30°.
The pipe assembly according to claim 2, characterized in that, the spacer section (21) further comprises a second transition section (213), and the two ends of the second transition section (213) are respectively connected to the straight pipe section ( 211) is connected to the first mating end (201).
The pipe assembly according to claim 1, characterized in that, the wall thickness of the spacer section (21), the wall thickness of the first mating end (201) and the wall thickness of the second mating end (202) equal.
The pipe assembly according to claim 1, characterized in that, the inner wall of the spacer section (21) is provided with a ring-shaped protruding structure, and the surface of the protruding structure is a circular arc structure.
A four-way valve, characterized in that the four-way valve comprises a body (1) and the pipe assembly according to any one of claims 1 to 7, and the pipe assembly is arranged in communication with the body (1).