CN212398470U - Air-conditioning heat exchanger gas collecting pipe assembly - Google Patents

Abstract

The utility model relates to an air conditioner heat exchanger gas collecting tube subassembly, including gas collecting tube (1) and bleeder (2), gas collecting tube (1) adopt to braze with bleeder (2) and be connected, the bleeder constitute by copper aluminum pipe joint, this copper aluminum pipe joint's junction has boundary (2.1), the bleeder present the curved setting (2.2). The utility model discloses a theory of operation is: in order to prevent the welding seam of the copper-aluminum pipe joint from being damaged by the high temperature of the subsequent brazing, the length is increased by the bent arrangement, the heating capacity of the copper-aluminum welding spot in the welding process is reduced, and the copper replacement of the air collecting pipe group of the air-conditioning heat exchanger is realized.

Description

Air-conditioning heat exchanger gas collecting pipe assembly

Technical Field

The utility model relates to an air conditioner discharge subassembly especially indicates the air conditioner discharge subassembly that adopts combined material to process, through set up crooked radian on the bleeder, makes the extension of branch pipe length, convenient processing.

Background

The gas collecting pipe is a part consuming more copper metal in the air conditioner, and in order to reduce the amount of copper, a material replacement technical scheme of replacing copper with stainless steel and replacing copper with steel appears in succession in recent years, and the use effect is not ideal.

The copper-aluminum pipe joint processed by adopting the ZL200710145756.5 and sleeve extrusion resistance welding method is a bending-resistant copper-aluminum pipe joint, and the joint does not crack and leak when bent at 90 degrees. The copper-aluminum joint produced by the technology is used for the branch pipe, and is beneficial to realizing the replacement of copper by aluminum of the gas collecting pipe assembly. However, both ends of the branch pipe on the gas collecting pipe assembly need to be brazed, due to the high temperature influence of brazing, the welding surface of the copper-aluminum joint can fall off after being heated, and the reason for heating the copper-aluminum joint is mainly heat conduction in metal, particularly the temperature of the metal close to a heating area is very high, experimental results show that when a copper pipe with the diameter of 9.52mm is rapidly melted and heated, the distance from the position with the temperature of 600 ℃ to a melting point is close to 20mm, obviously, when the branch pipe is 40mm long and is brazed at a certain end, the central temperature of the branch pipe is possibly close to 600 ℃, the melting point of aluminum is 640 ℃, and the instantaneous heating at the temperature of 600 has a destructive effect on the copper-aluminum pipe joint. Experiments and practices show that the copper-aluminum pipe joint cannot be used in the situation that the branch pipe is short.

The gas collecting pipe assembly is limited by the space of the air conditioner, the distance between the gas collecting pipe and the heat exchanger body cannot be increased, the design of the existing gas collecting pipe assembly, particularly a branch pipe, cannot meet the process requirement of adopting a copper-aluminum pipe joint, and the copper substitution of the gas collecting pipe assembly is influenced.

There are many documents on the copper replacement of the gas collecting tube assembly, and at present, no industrial application is realized. Copper-aluminum pipe joints are not seen as an alternative to the branch pipes.

CN202561973U, application field air-conditioning gas collecting tube, discloses the technical characteristics of stainless steel replacing copper, in order to reduce production cost; an air collecting pipe of air conditioner is composed of a pipe body, a gas collecting pipe and a gas collecting pipe.

CN201520604689.9, air-conditioning gas collecting tube in application field, discloses the technical characteristics of 'providing an integrated structure type air-conditioning gas collecting tube' to reduce the product leakage rate.

CN201721398806.6, application field air conditioner collector, the branch pipe is equipped with the conical throat and inserts the through-hole of being responsible for and weld and fix, can carry out effective location with being responsible for, has guaranteed that the solder is abundant with the welding seam and contacts, guarantees not to leak.

CN201120068226.7, air-conditioning gas collecting tube in the application field, disclosing that the gas collecting tube of the aluminum integral corrugated fin tube evaporator, and the like are aluminum tubes, reducing the cost.

In other related documents, a technical scheme for solving the problem that the copper-aluminum joint is used for the branch pipe through the shape design of the branch pipe is not found.

Disclosure of Invention

And in the existing design, there is the risk that the heating process of brazing destroys the copper aluminium welding seam, so the bleeder can't adopt copper aluminium pipe joint, the to-be-solved technical problem of the utility model is "prevent the both ends of bleeder process of brazing to the infringement of copper aluminium welding seam" to overcome prior art's drawback. The utility model overcomes the structure realizes the copper replacement of the air-conditioning gas collecting pipe group to the limit of the length of the copper-aluminum joint.

The outer diameters of the copper aluminum pipe and the welding seam can be the same by sleeve extrusion resistance welding, and the inner structure of the copper aluminum joint can realize the inner diameter of the aluminum pipe and the joint and the inner diameter and the outer diameter of the copper pipe, the aluminum pipe and the joint can also be the same by applying core rod extrusion to the inside of the copper aluminum joint of the pipeline in the welding process. Under the prerequisite that does not change discharge and heat exchanger body interval, through doing crooked setting at the bleeder, make the technical scheme that the length of bleeder exceeded 60mm, realized making the bleeder with copper aluminium union coupling.

The technical scheme of the utility model is that: a gas collecting pipe component of an air conditioner heat exchanger comprises a gas collecting pipe and branch pipes, wherein the branch pipes are arranged outside the gas collecting pipe and communicated with the inside of the gas collecting pipe; the gas collecting pipe and the branch pipe are connected by brazing, the branch pipe is composed of copper-aluminum pipe joints, a boundary line is arranged at the joint of the copper-aluminum pipe joints, and the branch pipe is arranged in a bent shape.

The connecting section of the branch pipe and the gas collecting pipe is a straight section, radial sections are arranged on two sides of the branch pipe, the two radial sections are symmetrically arranged along the branch pipe, and the radial sections are attached to the outer wall of the gas collecting pipe.

The bending shape of the branch pipe is Z-shaped.

The bent shape of the branch pipe is set to be U-shaped.

The bending shape of the branch pipe is set as alpha type.

The branch pipe is arranged spirally.

The length of the branch pipe is more than 60 mm.

The joint of the copper-aluminum pipe joint is a welding part of a copper pipe and an aluminum pipe, the welding part is positioned at the straight line section of the branch pipe, and the length of the straight line section is more than 15 mm.

Drawings

Fig. 1 is a schematic view of a lateral pipe according to a first embodiment of the present invention.

Fig. 2 is a schematic view of a lateral pipe according to a second embodiment of the present invention.

Fig. 3 is a schematic view of a lateral pipe according to a third embodiment of the present invention.

Fig. 4 is a schematic view of a lateral pipe according to a fourth embodiment of the present invention.

Detailed Description

The invention will be further described with reference to specific embodiments, the advantages and features of the invention will become more apparent as the description proceeds. These examples are merely illustrative and do not limit the scope of the invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and modifications are intended to be included within the scope of the invention.

Referring to fig. 1 to 4, the utility model relates to a gas collecting tube assembly of an air conditioner heat exchanger, which comprises a gas collecting tube 1 and branch tubes 2, wherein the branch tubes 2 are arranged outside the gas collecting tube 1 and communicated with the inside of the gas collecting tube 1; the gas collecting pipe 1 and the branch pipe 2 are connected by brazing, the branch pipe 2 is composed of copper-aluminum pipe joints, the joint of the copper-aluminum pipe joints is provided with a boundary 2.1, and the branch pipe 2 is arranged in a bending shape (an arc-shaped section 2.2 is arranged on the branch pipe 2). The joint of the copper-aluminum pipe joint is a welding part of a copper pipe and an aluminum pipe, the welding part is positioned at the straight line section of the branch pipe, and the length of the straight line section is more than 15 mm.

The connecting section of the branch pipe 2 and the gas collecting pipe 1 is a straight section (unbent), the two sides of the branch pipe 2 are provided with radial sections, the two radial sections are symmetrically arranged along the branch pipe, and the radial sections are attached to the outer wall of the gas collecting pipe 1, so that the damage caused by bending the copper-aluminum joint can be prevented.

As shown in fig. 1, the branch pipe bending shape may be a Z-shaped configuration, which is a schematic structural view of a first embodiment of the branch pipe of the present invention; for the Z-shaped structure, the branch pipe is processed with the least difficulty, and the pipeline layout is the simplest.

As shown in fig. 2, the branch pipe of the second embodiment of the present invention has a spiral curved shape, and is communicated with the gas collecting pipe.

As shown in fig. 3, the branch pipe according to the third embodiment of the present invention has a curved shape, which may be an α shape, and is communicated with the gas collecting pipe.

As shown in fig. 4, the structure of the branch pipe according to the fourth embodiment of the present invention is schematically illustrated, and the bent shape of the branch pipe may be U-shaped and is communicated with the gas collecting pipe.

The utility model discloses a theory of operation is: on the premise of not changing the distance between the gas collecting pipe and the heat exchanger body, the technical scheme that the length of the branch pipe exceeds 60mm is realized by bending the branch pipe, the purpose of lengthening the copper-aluminum pipe joint is realized when the copper-aluminum pipe joint is used as the branch pipe and the bending shape of the branch pipe is set to be Z-shaped, U-shaped, alpha-shaped, spiral and the like, the heating capacity of copper-aluminum welding spots in welding is reduced, and the copper replacement of the gas collecting pipe group of the air-conditioning heat exchanger is realized.

Claims (8)

1. The air-conditioning heat exchanger gas collecting pipe assembly is characterized by comprising a gas collecting pipe (1) and branch pipes (2), wherein the branch pipes (2) are arranged outside the gas collecting pipe (1) and communicated with the inside of the gas collecting pipe (1); the gas collecting pipe (1) is connected with the branch pipe (2) in a brazing mode, the branch pipe is composed of copper-aluminum pipe joints, a boundary line (2.1) is arranged at the joint of the copper-aluminum pipe joints, and the branch pipe is arranged in a bent mode (2.2).

2. A gas collecting tube assembly of an air conditioner heat exchanger as claimed in claim 1, wherein the connecting section of the branch tube (2) and the gas collecting tube (1) is a straight section, radial sections are arranged at both sides of the branch tube, the two radial sections are symmetrically arranged along the branch tube, and the radial sections are attached to the outer wall of the gas collecting tube (1).

3. An air conditioner heat exchanger header assembly as claimed in claim 1, wherein said branch pipes (2) are arranged in a zigzag shape in a curved shape.

4. An air conditioner heat exchanger header assembly as claimed in claim 1, wherein said branch pipes (2) are arranged in a U-shape in a curved shape.

5. An air conditioner heat exchanger header assembly as claimed in claim 1, wherein said branch pipes (2) are arranged in a curved shape of α -type.

6. An air conditioner heat exchanger header assembly as claimed in claim 1, wherein said branch pipes (2) are arranged in a spiral pattern.

7. An air conditioner heat exchanger header assembly as claimed in claim 1, wherein the length of said branch pipe (2) is greater than 60 mm.

8. The air conditioner heat exchanger gas collector assembly of claim 1, wherein the joint of the copper-aluminum pipe joint is a welded joint of a copper pipe and an aluminum pipe, the welded joint is located at a straight section of the branch pipe, and the length of the straight section is greater than 15 mm.

Images