CN216743242U

CN216743242U - Pipe assembly and four-way valve with same

Info

Publication number: CN216743242U
Application number: CN202122707934.7U
Authority: CN
Inventors: 朱佳峰
Original assignee: Zhejiang Dunan Artificial Environment Co Ltd
Current assignee: Zhejiang Dunan Artificial Environment Co Ltd
Priority date: 2021-11-03
Filing date: 2021-11-03
Publication date: 2022-06-14
Anticipated expiration: 2031-11-03
Also published as: WO2023078363A1

Abstract

The utility model provides a pipe assembly and a four-way valve with the same, which comprise: the valve pipe is provided with a fixed end and a free end which are oppositely arranged; the sleeve pipe, the sleeve pipe has relative first cooperation end and the second cooperation end that sets up, and first cooperation end is fixed with the free end cooperation, and the second cooperation end is used for the cover to establish treat the outside of connecting pipe and with treat that the connecting pipe welded fastening, and the sleeve pipe has the interval section, and the interval section is located between first cooperation end and the second cooperation end, and at least partial internal diameter of interval section is less than the external diameter of treating the connecting pipe. The problem that the welding beading in the prior art drops into the body inside easily is solved.

Description

Pipe assembly and four-way valve with same

Technical Field

The utility model relates to the field of four-way valves, in particular to a pipe assembly and a four-way valve with the same.

Background

A four-way valve is an indispensable component in a refrigeration apparatus, and generally includes a body portion and a pipe assembly communicating with the body portion. The main body part is communicated with a pipe fitting in the refrigeration system through a pipe assembly, and the pipe assembly and the pipe fitting in the refrigeration system are fixed through welding under the normal condition. Weld the fixed in-process probably forms the weld beading at the pipe fitting among geminate transistors subassembly and the refrigerating system to the hidden danger that the weld beading dropped into this internal portion easily appears influences the normal operating of cross valve.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pipe assembly and a four-way valve with the same, which aim to solve the problem that welding beading in the prior art is easy to drop into a body.

According to an aspect of the present invention, there is provided a pipe assembly including: the valve pipe is provided with a fixed end and a free end which are oppositely arranged; the sleeve pipe, the sleeve pipe has relative first cooperation end and the second cooperation end that sets up, and first cooperation end is fixed with the free end cooperation, and the second cooperation end is used for the cover to establish treat the outside of connecting pipe and with treat that the connecting pipe welded fastening, and the sleeve pipe has the interval section, and the interval section is located between first cooperation end and the second cooperation end, and at least partial internal diameter of interval section is less than the external diameter of treating the connecting pipe.

By applying the technical scheme of the utility model, the end part of the pipe to be connected is arranged in the second matching end of the sleeve in a penetrating way, then the solder is arranged between the first matching end of the outer wall of the pipe to be connected and the inner wall of the second matching end, the whole body is heated to melt the solder, and the welding between the sleeve and the pipe to be connected is completed. Because the spacing section is arranged between the first matching end and the second matching end, when the solder is placed too much, the redundant solder may form flash, and the formed flash slides along the inner wall of the second matching end and can be attached to the spacing section, so that the flash can be stopped, and the flash is prevented from sliding into the valve body. Compared with the traditional technical scheme, the arrangement of the interval sections can play the role of separating and blocking the welding beading, the welding beading is prevented from falling into the interior of the body of the four-way valve, and the normal operation of the four-way valve can be ensured.

Further, the interval section comprises a straight pipe section, the straight pipe section is provided with a first end and a second end which are arranged oppositely, 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 with the first matching end, and the second end is connected with the second matching end. The straight pipe section is simple in structure and convenient for processing and forming of the sleeve.

Further, the spacer section also comprises a first transition section, the first transition section is positioned between the straight pipe section and the second matching end, and the inner diameter of the first transition section is gradually reduced from the second matching end to the straight pipe section. Above-mentioned setting can treat that the connecting pipe stretches into the intraductal distance of cover and restrict, makes things convenient for staff's control to treat that the connecting pipe stretches into the sheathed tube degree of depth.

Further, the first transition section is of a conical structure, and the conical angle of the first transition section is set between 15 degrees and 30 degrees. The cone angle setting of first changeover portion is in above-mentioned within range, can make things convenient for sheathed tube machine-shaping, and can guarantee sheathed tube structural strength.

Further, the spacer section also comprises a second transition section, and two ends of the second transition section are respectively connected with the straight pipe section and the first matching end. Above-mentioned setting can be conveniently to sheathed tube machine-shaping, and can increase sheathed tube structural strength.

Further, the wall thickness of the spacer, the wall thickness of the first mating end, and the wall thickness of the second mating end are equal. So set up, can conveniently be to sheathed tube machine-shaping.

Furthermore, the inner wall of the interval section is annularly provided with a convex structure, and the surface of the convex structure is of an arc structure. By the arrangement, the sleeve can be conveniently machined and formed.

According to another aspect of the present invention, there is provided a four-way valve comprising a body and a tube assembly as described above, the tube assembly being disposed in communication with the body.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic diagram illustrating an assembly of a pipe assembly and a pipe to be connected according to an embodiment of the present invention;

FIG. 2 illustrates a cross-sectional view of a tube assembly provided in accordance with an embodiment of the present invention assembled with a tube to be joined;

FIG. 3 shows a cross-sectional view of the pipe assembly assembled with a pipe to be connected according to a second embodiment of the present invention;

FIG. 4 is a cross-sectional view of the pipe assembly assembled with a pipe to be connected according to a third embodiment of the present invention;

fig. 5 shows a schematic structural diagram of a four-way valve according to a fourth embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. a valve tube; 101. a fixed end; 102. a free end;

20. a sleeve; 201. a first mating end; 202. a second mating end;

21. a spacer section; 211. a straight pipe section; 212. a first transition section; 213. a second transition section;

30. a pipe to be connected;

1. a body.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 and 2, an embodiment of the present invention provides a tube assembly including 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 which are arranged oppositely, the first mating end 201 is fixed to the free end 102 in a matching manner, the second mating end 202 is used for being sleeved on the outer side of the pipe 30 to be connected and fixed to the pipe 30 to be connected in a welding manner, the sleeve 20 has a spacing section 21, the spacing 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 spacing section 21 is smaller than the outer diameter of the pipe 30 to be connected.

By applying the technical scheme of the utility model, the end part of the pipe 30 to be connected is arranged in the second matching end 202 of the sleeve 20 in a penetrating way, then the solder is arranged between the first outer wall of the pipe 30 to be connected and the inner wall of the second matching end 202, 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. Because the spacer 21 is disposed between the first mating end 201 and the second mating end 202, when solder is placed too much, the excess solder may form a flash that slides along the inner wall of the second mating end 202 and adheres to the spacer 21. Compared with the traditional technical scheme, the interval section 21 separates the first matching end 201 and the second matching end 202, and the inner diameter of the interval section 21 is smaller than the outer diameter of the connecting pipe 30, so the interval section 21 can play a role in separating and blocking the welding beading, the welding beading is prevented from falling into the interior of the body 1 of the four-way valve, and the normal operation of the four-way valve can be ensured. And, the setting of interval section 21, simple structure, low in manufacturing cost.

Further, the spacer 21 comprises a straight tube section 211, the straight tube section 211 has a first end and a second end which are oppositely arranged, the inner diameter of the straight tube section 211 is smaller than the outer diameter of the pipe 30 to be connected, the first end is connected with the first mating end 201, and the second end is connected with the second mating end 202. In this embodiment, the inner diameter of the straight tube section 211 is smaller than the inner diameter of the second mating end 202. Specifically, the first mating end 201, the straight tube section 211 and the second mating end 202 are coaxially arranged, and when the sleeve 20 and the pipe 30 to be connected are welded, a weld beading formed during the welding process spreads on and adheres to the inner wall of the straight tube section 211. The inner wall of the straight pipe section 211 forms an annular attachment surface for welding flash to attach, and the formation of the annular attachment surface can ensure the uniformity of welding flash diffusion and increase the contact area between the welding flash and the attachment surface, thereby ensuring the stability of welding flash attachment and reducing the phenomenon that the welding flash falls off.

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

In this embodiment, the spacer 21 further comprises a first transition section 212, the first transition section 212 is located between the straight tube section 211 and the second mating end 202, and the inner diameter of the first transition section 212 is gradually reduced from the second mating end 202 to the straight tube section 211. So set up and make the internal diameter of at least part first changeover portion 212 be less than the external diameter of treating connecting pipe 30, will treat that the tip of connecting pipe 30 wears to establish behind the sleeve pipe 20, treat the tip of connecting pipe 30 and the inner wall looks butt of first changeover portion 212, first changeover portion 212 is treated the displacement that connecting pipe 30 stretched into in the sleeve pipe 20 and is restricted this moment, avoids treating connecting pipe 30 and straight tube section 211 to contact, makes things convenient for the welding personnel control to treat the degree of depth that connecting pipe 30 stretched into in the sleeve pipe 20. Specifically, the second mating end 202, the first transition section 212 and the straight tube section 211 are integrally formed, so as to ensure the strength of the overall structure of the sleeve 20.

The sidewall of the first transition section 212 may be a slope or a cambered surface, and in this embodiment, the sidewall of the first transition section 212 is a slope. 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 in the axial direction is too long, resulting in material waste; when the cone angle is greater than 30 degrees, the included angle between the first transition section 212 and the second mating end 202 is too large, and the structural strength of the joint of the first transition section 212 and the second mating end 202 cannot be guaranteed, so that in the scheme, the cone angle of the first transition section 212 is set within the range, so that the waste of raw materials can be avoided, and the overall structural strength of the sleeve 20 can be guaranteed.

In this embodiment, the first mating end 201 of the sleeve 20 is sleeved on the outer circumference of the free end 102 of the valve tube 10 and is in welded fit with the free end 102 of the valve tube 10. Further, the inner diameter of the straight tube section 211 is smaller than the inner diameter of the free end 102. The arrangement is such that when the valve tube 10 and the sleeve 20 are assembled, the distance that the free end 102 of the valve tube 10 extends into the sleeve 20 can be limited by the spacing section 21, so that the valve tube 10 and the sleeve 20 can be quickly positioned, and the installation accuracy of the valve tube 10 and the sleeve 20 is ensured.

Specifically, the spacer 21 further comprises a second transition section 213, and both ends of the second transition section 213 are respectively connected with the straight tube section 211 and the first mating end 201. Straight tube section 211 and first cooperation end 201 pass through second transition 213 transitional coupling, and first cooperation end 201, second transition 213 and straight tube section 211 be the integrated into one piece structure, so set up, both made things convenient for the machine-shaping of sleeve pipe 20, also can guarantee sleeve pipe 20's structural strength.

Further, the inner diameter of the second transition section 213 decreases gradually in the direction from the first mating end 201 to the straight tube section 211. After the free end 102 of the valve tube 10 is inserted into the sleeve 20, the second transition section 213 can limit the displacement of the valve tube 10 extending into the sleeve 20, so as to improve the matching accuracy of the valve tube 10 and the sleeve 20.

Further, the wall thickness of the spacer 21, the wall thickness of the first mating end 201, and the wall thickness of the second mating end 202 are equal. So set up, can make things convenient for sleeve pipe 20 integrated into one piece machine-shaping. Specifically, in the process of machining and forming the sleeve 20, the two end portions of the sleeve 20 for being matched with the pipe 30 to be connected may be subjected to broaching, after the broaching, the two end portions of the sleeve 20 respectively form a first mating end 201 and a second mating end 202, a straight pipe section 211 is formed at the middle portion of the sleeve 20, a first transition section 212 is formed at a portion between the second mating end 202 and the straight pipe section 211, and a second transition section 213 is formed at a portion between the first mating end 201 and the straight pipe section 211. With the arrangement, the sleeve 20 can be conveniently machined and formed, and the first mating end 201, the spacing section 21 and the second mating end 202 form an integral structure, so that the overall structural strength of the sleeve 20 can be ensured.

As shown in fig. 3, a second embodiment of the present invention provides a pipe assembly, which is different from the first embodiment in that the spacer 21 in the present embodiment has a tapered structure, and the inner diameter of the spacer 21 gradually decreases from the second mating end 202 to the first mating end 201, and particularly, when the pipe assembly is assembled, a space is provided between the end of the valve pipe 10 and the spacer 21.

As shown in fig. 4, a pipe assembly according to a third embodiment of the present invention is different from the first embodiment in that a convex structure is annularly disposed on an inner wall of a spacer 21 of a sleeve 20 in this embodiment, and a surface of the convex structure is a circular arc structure. Specifically, during the assembly process, the circumferential surface of the protruding structure is in abutting fit with the end of the pipe 30 to be connected, and a space is formed between the protruding structure and the end of the first mating end 201 close to the second mating end 202. Particularly, during the process of forming the sleeve 20, the middle portion of the sleeve 20 may be necked down to form a convex structure. So set up, can make protruding structure separate the fender to the weld beading that welding process formed, avoid the weld beading to fall into in the body 1 of cross valve.

As shown in fig. 5, a four-way valve according to a fourth embodiment of the present invention includes a body 1 and the pipe assembly of the first embodiment, wherein the pipe assembly is disposed in communication with the body 1. Specifically, the fixed end 101 of the valve tube 10 is disposed in communication with the body 1.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be discussed further in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. 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 a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and unless otherwise stated, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A tube assembly, comprising:

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

the connecting pipe comprises a sleeve (20), wherein the sleeve (20) is provided with a first matching end (201) and a second matching end (202) which are oppositely arranged, the first matching end (201) is matched and fixed with the free end (102), the second matching end (202) is used for being sleeved on the outer side of the to-be-connected pipe (30) and welded and fixed with the to-be-connected pipe (30), the sleeve (20) is provided with a spacing section (21), the spacing section (21) is located between the first matching end (201) and the second matching end (202), and at least part of the inner diameter of the spacing section (21) is smaller than the outer diameter of the to-be-connected pipe (30).

2. The pipe assembly according to claim 1, wherein the spacer section (21) comprises a straight pipe section (211), the straight pipe section (211) having a first end and a second end arranged opposite, the inner diameter of the straight pipe section (211) being smaller than the outer diameter of the pipe (30) to be connected, the first end being connected with the first mating end (201) and the second end being connected with the second mating end (202).

3. The tube assembly of claim 2, wherein the spacer section (21) further comprises a first transition section (212), the first transition section (212) being located between the straight tube section (211) and the second mating end (202), the first transition section (212) having an inner diameter that gradually decreases from the second mating end (202) to the straight tube section (211).

4. The tubular assembly of claim 3, wherein the first transition section (212) is a tapered structure, the taper angle of the first transition section (212) being set between 15 ° and 30 °.

5. The pipe assembly according to claim 2, wherein the spacer section (21) further comprises a second transition section (213), both ends of the second transition section (213) being connected with the straight pipe section (211) and the first mating end (201), respectively.

6. The tube assembly of claim 1, wherein a wall thickness of the spacer segment (21), a wall thickness of the first mating end (201), and a wall thickness of the second mating end (202) are equal.

7. The pipe assembly according to claim 1, characterized in that the inner wall of the spacer (21) is provided annularly with a raised structure, the surface of which is a circular arc structure.

8. A four-way valve, characterized in that it comprises a body (1) and a tube assembly according to any one of claims 1 to 7, said tube assembly being placed in communication with said body (1).