CN215806915U

CN215806915U - Air conditioner connecting pipe assembly and air conditioner

Info

Publication number: CN215806915U
Application number: CN202121595901.1U
Authority: CN
Inventors: 孙黎明; 刘鹏; 许勇; 陈昊; 卞瑞
Original assignee: Gree Electric Appliances Inc of Zhuhai; Gree Wuhu Electric Appliances Co Ltd
Current assignee: Gree Electric Appliances Inc of Zhuhai; Gree Wuhu Electric Appliances Co Ltd
Priority date: 2021-07-14
Filing date: 2021-07-14
Publication date: 2022-02-11
Anticipated expiration: 2031-07-14

Abstract

The utility model discloses an air conditioner connecting pipe assembly and an air conditioner, wherein the air conditioner connecting pipe assembly is used for connecting an inner machine and an outer machine and comprises a first connecting pipe and a second connecting pipe; one end of the first connecting pipe is connected with a pipe joint, and the pipe joint is provided with a flat end face; a boss is formed on the side wall of the second connecting pipe, and a table plane is formed at one end of the boss; the second connecting pipe is provided with a fixing piece which enables the table plane and the butt end surface to be in surface contact and abutted so as to be in sealing connection. The utility model adopts the surface contact of the platform plane and the plane of the head end surface to ensure the sealing effect.

Description

Air conditioner connecting pipe assembly and air conditioner

Technical Field

The utility model belongs to the field of refrigeration, and particularly relates to an air conditioner connecting pipe assembly and an air conditioner.

Background

Connecting pipes for circulating refrigerants are respectively arranged on an indoor unit and an outdoor unit of the conventional air conditioner; when assembling the air conditioner, connecting pipes respectively arranged on the outdoor unit and the indoor unit need to be communicated to form a channel for the flowing of a refrigerant; when the refrigerant flows between the two connecting pipes, a certain pressure exists in the connecting pipes, so that the sealing performance of the connecting structure between the connecting pipes influences the refrigerating effect of the air conditioner.

The connection mode of the connection part of the existing internal and external machine connection pipe is screwed up by threads, and the bell mouth and the conical surface of the pipe joint are compressed to play a role in connection and sealing.

But according to the current after-sale and feedback data of the household air conditioner, the leakage of the air conditioner connecting pipe is shown as one of the main faults of the air conditioner. The main leakage reasons are as follows: the specific practical production process is influenced by multiple factors such as the inner wall angle, the bell mouth angle, the straight surface area, the conical surface degree of the pipe joint, the surface quality of the conical surface and the like of the nut, and finally the connection is abnormal.

SUMMERY OF THE UTILITY MODEL

The utility model provides an air conditioner connecting pipe assembly and an air conditioner, and aims to solve the problem that sealing cannot be guaranteed due to the fact that variables are difficult to control.

In order to achieve the purpose, the air conditioner connecting pipe assembly and the air conditioner have the following specific technical scheme:

an air conditioner connecting pipe assembly is used for connecting an internal unit and an external unit and comprises a first connecting pipe and a second connecting pipe; one end of the first connecting pipe is connected with a pipe joint, and the pipe joint is provided with a flat end face; a boss is formed on the side wall of the second connecting pipe, and a table plane is formed at one end of the boss; the second connecting pipe is provided with a fixing piece which enables the table plane and the butt end surface to be in surface contact and abutted so as to be in sealing connection.

Further, the fixing piece comprises a support part and a driving part, the support part is arranged on one side, away from the pipe joint, of the boss, and the driving part is connected with the pipe joint; the driving part drives the support part to move relative to the pipe joint, and the support part extrudes one side of the boss to enable the platform plane on the other side to be abutted against the end face of the flat head.

Further, the pressure of the support part on the boss is perpendicular to the end face of the butt end.

Furthermore, the driving part is in threaded connection with the pipe joint, and the support part is fixed with the driving part; the boss is extruded by the support part along with the rotation of the driving part relative to the pipe joint, so that the platform plane is abutted to the end face of the flat head.

Furthermore, one end of the driving part is fixed with the supporting part, a threaded hole is formed in the other end of the driving part, and the pipe joint is in threaded connection with the threaded hole.

Furthermore, a handle part is formed on the side wall of the pipe joint and is positioned on one side of the driving part.

Furthermore, one end of the second connecting pipe is sleeved in the pipe joint.

Furthermore, a limiting hole is formed in the inner wall of the pipe joint and used for sleeving a second connecting pipe.

Furthermore, a bottom wall is formed at one end of the limiting hole, and a space is formed between the bottom wall and the end face of the second connecting pipe.

An air conditioner comprises the air conditioner connecting pipe assembly.

The air conditioner connecting pipe assembly and the air conditioner have the following advantages that:

1. the copper pipe is extruded and molded, and the pipe body is flattened, so that the copper pipe is less damaged and higher in reliability compared with the traditional flaring stretching;

2. the surface contact is adopted, so that the defect of line contact is thoroughly avoided;

3. in the fixing part screwing process, the pressure and the connecting surface form 90 degrees, the pressing effect is better, the contact is more compact, and the sealing performance is better.

Drawings

FIG. 1 is a schematic structural view of an air conditioner connecting pipe assembly according to the present invention;

FIG. 2 is an exploded view of the air conditioner connecting pipe assembly of the present invention;

FIG. 3 is a cross-sectional view of an air conditioner connection pipe assembly of the present invention;

FIG. 4 is an enlarged view of portion A of FIG. 3;

fig. 5 is an enlarged view of a portion B of fig. 3.

The notation in the figure is:

1. a first connecting pipe; 2. a second connecting pipe; 21. a boss; 211. a table plane; 3. a pipe joint; 31. a flat end face; 32. a handle portion; 33. a limiting hole; 34. spacing; 4. a fixing member; 41. a holder; 42. a drive section.

Detailed Description

In order to better understand the purpose, structure and function of the present invention, an air conditioner connecting pipe assembly and an air conditioner will be described in detail with reference to the accompanying drawings.

The air conditioner comprises an indoor unit and an outdoor unit, which are hereinafter referred to as the indoor unit and the outdoor unit respectively. An air conditioner connecting pipe assembly is arranged between the indoor unit and the outdoor unit and is connected with the indoor unit and the outdoor unit to form a channel for circulating a refrigerant, so that heat energy is conveyed from the indoor to the outdoor unit to refrigerate or from the outdoor to the indoor to heat along with the consumption of electric energy.

As shown in fig. 1, the air-conditioning connecting pipe assembly includes a first connecting pipe 1, a second connecting pipe 2, and a connecting assembly connecting the first connecting pipe 1 and the second connecting pipe 2. Since the connection assembly is provided with different structures and parts at the first connection pipe 1 and the second connection pipe 2, respectively, the first connection pipe 1 and the second connection pipe 2 are further distinguished as follows:

wherein, the first connecting pipe 1 and the second connecting pipe 2 are pre-installed on the inner unit and the outer unit, respectively. The specific fixing mode adopts the existing connection modes such as welding after splicing, and the details are not repeated in the embodiment. The specific corresponding mode can be the following two modes: the first connecting pipe 1 is connected with an internal machine, and the second connecting pipe 2 is connected with an external machine; and the second connecting pipe 2 is connected with the internal machine. Namely, the first connection pipe 1 and the second connection pipe 2, one of which is connected to the inner unit and the other of which is connected to the outer unit.

Specifically, the connecting assembly comprises a pipe joint 3, and the pipe joint 3 is fixed at one end of the first connecting pipe 1. The general fixing mode is braze welding connection, the welding is stable, the efficiency is high, the appearance is attractive, the braze welding process is a mature processing process in the generation of the air conditioner, and the requirements of large output, high efficiency, stable and reliable quality in the prior art are met. The brazing process is required by the prior art, and the description of the embodiment is omitted.

Because the end face of the pipe joint 3 adopts a conical end face in the prior art, the end face of the pipe joint 3 is difficult to process to be matched with other parts. Therefore, as shown in fig. 2 and 3, the end surface of the pipe joint 3 in the present application is a butt end surface 31.

As shown in fig. 4, in order to contact the butt end face 31 to form a seal, a boss 21 is formed on the side wall of the second connection pipe 2, a platform plane 211 is formed at one end of the boss 21, and the platform plane 211 and the butt end face 31 are matched and are both vertically arranged relative to the axis of the connection pipe. Correspondingly, the boss 21 structure is mature and simple in processing technology, can be realized by adopting spinning or stamping and other technologies, and is not easy to damage in the daily operation process to cause poor products.

In order to contact the flat end surface 31 and the table surface 211, the second connection pipe 2 is provided with a fixing member 4, and the fixing member 4 makes the table surface 211 and the flat end surface 31 contact and abut with each other to hermetically connect the first connection pipe 1 and the second connection pipe 2.

Specifically, the fixing member 4 includes a support portion 41, the support portion 41 is provided on a side of the boss 21 away from the pipe joint 3, and the support portion 41 presses one side of the boss 21 to bring the other side of the table plane 211 into contact with the head end surface 31. And in order to ensure that the stress of the surface contact is uniform, the pressure of the support part 41 on the boss 21 is vertical to the butt end surface 31.

In order to drive the pressure of the holder 41, a driving part 42 is provided on the holder 41, and the driving part 42 is connected with the pipe joint 3 so as to drive the holder 41 to move relative to the pipe joint 3, and the driving part 42 with different structures can be adopted according to different driving principles.

Preferably, the driving part 42 is connected with the pipe joint 3 by screw threads, and the support part 41 is fixed with the driving part 42; as the driving portion 42 rotates relative to the pipe joint 3, the holder portion 41 presses the boss 21 to bring the flat surface 211 into contact with the flat end surface 31. By adopting the driving mode, one end of the driving part 42 is fixed with the support part 41, the other end of the driving part 42 forms a threaded hole, and the pipe joint 3 is in threaded connection with the threaded hole. Moreover, the driving portion 42 wraps the pipe joint 3 inside, which can effectively protect the connection structure. Since the pressure of the boss 21 by the receiver 41 is required to be perpendicular to the butt end face 31, the screwing pressure is perpendicular to the butt end face 31.

The support part 41 and the driving part 42 can be fixed by integral molding, so that the fixing part 4 is a nut, has simple structure and stable effect, and is a common connection mode of an inner machine connecting pipe and an outer machine connecting pipe; however, the supporting portion 41 and the driving portion 42 may be two parts, and then fixed and mounted at a later stage, so that the corresponding process is complicated and is not recommended.

In addition, the side wall of the pipe joint 3 is formed with a handle portion 32 to facilitate screwing, and the handle portions 32 may each have a polygonal shape, i.e., a quadrangle, a hexagon, etc., and specific shapes may refer to a quadrangle nut, a hexagon nut, etc. Hexagonal shape is preferred in view of the fitting of the wrench. At an angle for easy rotation, the boss 21 is shaped in conformity with the handle portion 32 and is hexagonal.

Instead of the above-described screw connection, the driving portion 42 and the pipe joint 3 may be bolted. The drive portion 42 and the extension portion are fixed, and the pipe joint 3 needs to have a mounting table formed on the side wall. There are also a variety of specific bolting configurations, as described in the examples below.

For example, the driving portion 42 is provided with first through holes in an even array, the mounting table is provided with second through holes in an even array, the first through holes and the second through holes correspond to each other one by one, each group of through holes are provided with a bolt respectively, and the bolt penetrates through the first through holes and the second through holes and is provided with a nut, so that the fixing and the abutting connection are completed. And the bolt is arranged in a direction perpendicular to the butt end face 31 so as to ensure that the pressure of the support part 41 on the boss 21 is perpendicular to the butt end face 31.

Such as the drive portion 42 and the mounting platform, one of which is threaded and the other of which is through-hole. That is, the driving portion 42 is provided with a threaded hole and the mounting table is provided with a through hole, or the driving portion 42 is provided with a through hole and the mounting table is provided with a threaded hole, and a bolt is inserted through the through hole and is screwed into the threaded hole. As long as the bolt is arranged in a direction perpendicular to the butt end surface 31, it can be ensured that the pressure of the holder 41 on the boss 21 needs to be perpendicular to the butt end surface 31. On the basis of being connected with one rotation and being connected with another thread, the exchange of the shaft and the hole and the exchange of the internal thread and the external thread can be realized, and the description is omitted in the embodiment.

However, although the fixing member 4 and the pipe joint 3 can be connected to each other by a fixing screw, the force application method cannot ensure the perpendicularity to the butt end face 31, and other external forces are required to press the butt end face 31 and the flat surface 211, which is not preferable because the sealing effect is inferior.

And in order to ensure the sealing effect, as shown in fig. 3 and 5, the second connection pipe 2 is sleeved in the pipe joint 3. A limiting hole 33 is formed in the inner wall of the pipe joint 3, and the limiting hole 33 is used for sleeving the second connecting pipe 2; one end of the limiting hole 33 forms a bottom wall, a distance 34 is formed between the bottom wall and the end face of the second connecting pipe 2, the second connecting pipe 2 is prevented from contacting with the bottom wall to influence the surface contact of the platform surface and the head end face 31, and the only connection reference is ensured.

Preferably, the first connecting pipe 1 is an inner machine connecting pipe, the second connecting pipe 2 is an outer machine connecting pipe, that is, the inner machine connecting pipe brazed pipe joint 3, the side wall of the outer machine connecting pipe is provided with a boss 21, and the fixing member 4 is sleeved on the outer side of the second connecting pipe 2 and connected with the pipe joint 3, so that the first connecting pipe 1 and the second connecting pipe 2 are sealed by surface contact and butt joint of the platform plane 211 and the flat head end surface 31.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes in the features and embodiments, or equivalent substitutions may be made therein by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims

1. An air conditioner connecting pipe assembly is used for connecting an internal machine and an external machine and is characterized by comprising a first connecting pipe and a second connecting pipe; one end of the first connecting pipe is connected with a pipe joint, and the pipe joint is provided with a flat end face; a boss is formed on the side wall of the second connecting pipe, and a table plane is formed at one end of the boss; the second connecting pipe is provided with a fixing piece which enables the table plane and the butt end surface to be in surface contact and abutted so as to be in sealing connection.

2. The air conditioner connecting pipe assembly of claim 1, wherein the fixing member comprises a bracket portion and a driving portion, the bracket portion is disposed on a side of the boss away from the pipe joint, and the driving portion is connected to the pipe joint; the driving part drives the support part to move relative to the pipe joint, and the support part extrudes one side of the boss to enable the platform plane on the other side to be abutted against the end face of the flat head.

3. An air conditioning connector assembly according to claim 2, wherein the boss is pressed against the boss with pressure normal to the butt end face.

4. The air conditioner connection tube assembly of claim 2, wherein the driving part is screw-coupled to the tube joint, and the holder part is fixed to the driving part; the boss is extruded by the support part along with the rotation of the driving part relative to the pipe joint, so that the platform plane is abutted to the end face of the flat head.

5. An air conditioner connection pipe assembly as claimed in claim 4, wherein one end of the driving part is fixed to the holder part, and the other end of the driving part is formed with a screw hole, and the pipe joint is screw-coupled to the screw hole.

6. The air conditioning connection duct assembly of claim 1, wherein the coupling sidewall is formed with a grip portion, the grip portion being located at a side of the driving portion.

7. The air conditioner connector assembly of claim 1, wherein the second connector tube is terminated in the tube connector.

8. The air conditioner connecting pipe assembly as set forth in claim 7, wherein a limiting hole is formed at an inner wall of the pipe joint for fitting the second connecting pipe.

9. An air conditioning connector assembly according to claim 8, wherein the one end of the retainer hole forms a bottom wall, and a space is formed between the bottom wall and the end surface of the second connector pipe.

10. An air conditioner characterized by comprising the air conditioning connection pipe assembly as recited in any one of claims 1 to 9.