Air conditioner heat exchanger flat pipe and heat exchanger applying flat pipe

Abstract

The invention belongs to the technical field of automobile air conditioners, and discloses an air conditioner heat exchanger flat pipe. The air conditioner heat exchanger flat pipe comprises a flat pipe body and inner fins. The inner fins are of a corrugated structure and are fixed in the flat pipe body. A plurality of heat exchange medium channels are formed by the inner fins and the inner wall of the flat pipe body. The invention further discloses an air conditioner heat exchanger applying the flat pipe. Due to the new flat pipe design, the heat exchange performance can be effectively improved, the refrigerant side resistance is reduced, the flat pipe weight can be better reduced, and integral performance enhancing and lightweight of the heat exchanger product are achieved; and the flatpipe forming and manufacturing difficulty is lowered, and the manufacturability and design application flexibility are improved.

Description

technical field [0001] The invention belongs to the technical field of automobile air conditioners, in particular to a flat tube of an air conditioner heat exchanger and a heat exchanger using the flat tube. Background technique [0002] The heat exchanger of the automotive air conditioning system mainly includes a condenser, an evaporator and a heater. Among them, the condenser and the evaporator are generally used for heat exchange between the refrigerant and the air, and have certain similarities in structure. [0003] See attached figure 1 , 2 , the parallel flow structure is the mainstream structure of condensers and evaporators in automotive air conditioning systems; its core components are flat tubes and fins that constitute the basic heat exchange unit. At present, flat tubes in parallel flow condensers and evaporators mainly include two types of structures: porous extruded structures and integral folded structures. [0004] See attached image 3 The main featur...

AI Technical Summary

Problems solved by technology

The disadvantage is that the wall thickness of the flat tube is limited by the mold and molding process, so it cannot be too thin, and the weight of the flat tube per unit length is heavy

The disadvantage is that its molding process is more complicated, and it has higher requirements for the subsequent heat exchanger brazing process

Therefore, the one-piece folded flat tube of the existing structure has many forming steps and the process is more complicated

In addition, due to the limitation of structure and process, the wall thickness of the outer wall and the inner rib of the flat tube must be the same, and the number of channels for the heat exchange medium is also obviously limited, and the improvement of product weight and heat transfer performance compared with the extruded flat tube is relatively limited.

[0006] To sum up, the overall performance of the heat exchanger using extruded flat tubes is relatively poor, and it does not have the advantage of light weight; the heat exchanger using one-piece folded flat tubes improves the overall performance of the product But there are still relatively large limitations, and its manufacturability is poor, and the production cost is also high

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