KR200247125Y1 - Heat exchanger for car air conditioner - Google Patents

Abstract

The present invention discloses an improved assembly structure of an air conditioner heat exchanger.

The present invention provides a plurality of flat tube tubes arranged at regular intervals, a plurality of corrugated heat transfer fins interposed between the tubes to facilitate the heat exchange of the refrigerant, and zigzag connection while skipping the flat tube line by line. Another U-shaped tube and another flat tube between the U-shaped tube and the flat tube connected to each other characterized by consisting of a bypass tube for zigzag connection by bypassing the "U" -shaped tube.

Therefore, the present invention can reduce the air resistance due to the parallel configuration while minimizing the mounting space in the vehicle, can be manufactured at a time by the brazing process, and the two heat exchangers are in contact with the heating fins at the same time to improve the heat exchange efficiency of the heating fins. Maximize the effect.

Description

Heat exchanger for car air conditioner

The present invention relates to a heat exchanger (air exchanger) of the air conditioner (air conditioner) for vehicles, and more particularly to the structure that can maximize the heat exchange efficiency while minimizing the mounting space in the vehicle when the heat exchanger has a parallel structure It is about.

An air conditioner that cools a room using a cooling cycle liquefies a refrigerant gas compressed at high pressure in a compressor by heat exchange with an outside air in a condenser, and then expands an expansion valve. Or an air conditioner that performs cooling by vaporization heat of a refrigerant absorbed by evaporation by heat exchange with an internal vapor in an evaporator through a capillary tube.

For example, in automobiles, the air conditioner is used for cooling the car in the summer season. The air conditioner performs a predetermined function by inducing a change in the state of the refrigerant through a heat exchanger such as a condenser or an evaporator (hereinafter referred to as a heat exchanger). Improvement of heat exchanger efficiency is very important for cooling efficiency. Accordingly, recently, a so-called super compact condenser (SCC) heat exchanger that maximizes the heat exchange efficiency by allowing a plurality of flat tubes to flow simultaneously in a zigzag form has appeared.

Figure 1 shows a conventional configuration of such an SCC heat exchanger. It is coupled to communicate with the two headers (H) arranged at regular intervals so as to be orthogonal to the plurality of flat tube (T) for heat exchange the compressed refrigerant with air between the two headers (H) through which the refrigerant flows in and out, Between each tube (T) is interposed a heat transfer fin (F) of the corrugate (corrugate) shape for promoting the heat transfer of the compressed refrigerant.

The SCC heat exchanger is composed of a clad material, each component of which is coated with a flux on its surface, and supported by brazing after being preassembled to a predetermined shape by a core granulator. It is made in one piece.

On the other hand, Figure 2 and Figure 3 is a schematic diagram showing a heat exchanger of a parallel structure, Figure 2 is a structure in which the two heat exchangers are arranged overlapping in the front and rear directions to increase the cooling capacity. Such a structure has a problem in that the air exchange between the heat exchangers is not made smoothly, so the annual exchange efficiency falls. 3 is a structure in which two heat exchangers are deployed on the front surface in order to improve the problems of the above-described structure, but the front area is excessively increased, which makes it difficult to mount the vehicle.

An object of the present invention was devised in view of the above-mentioned conventional problems, and to provide a heat exchanger having a parallel structure that can maximize heat exchange efficiency while minimizing a mounting space in a vehicle.

In order to achieve the above object, the heat exchanger according to the present invention includes a plurality of flat tube tubes arranged at regular intervals, a plurality of corrugated heat transfer fins interposed between the tubes to promote heat exchange of the refrigerant, and the flat tube tube. Bypass the "U" -shaped tube connected in a zigzag while skipping line by line, and other flat-shaped tubes between the "U" -shaped tube and the flat tube connected to bypass the "U" -shaped tube to connect in a zigzag It is characterized by consisting of a tube.

The present invention is such that the flat tube connected by the U-shaped tube and the flat tube connected by the bypass tube are heat exchanged in one core while being divided into independent systems, thereby minimizing the mounting space in the vehicle, It can reduce the air resistance, can be manufactured at a time by the brazing process, and the two heat exchangers are in contact with the heating fins at the same time to maximize the heat exchange efficiency of the heating fins.

1 is a front view showing the configuration of a conventional SCC heat exchanger,

Figure 2 is a schematic diagram showing a heat exchanger of a conventional parallel structure,

Figure 3 is a schematic diagram showing a heat exchanger of another conventional parallel structure,

4 is a perspective view showing a heat exchanger of a parallel structure according to the present invention;

<Description of the symbols for the main parts of the drawings>

10; First heat exchanger 12; Flat tube (of the first heat exchanger)

14; "U" shaped tube 20; 2nd heat exchanger

22; flat tube (of second heat exchanger)

24; Bypass connector 30; Electric heating fin

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 4 is a perspective view showing a heat exchanger of a parallel structure according to the present invention, a first zigzag connected by a "U" shaped tube 14 while skipping a plurality of flat tube 12 arranged in a line by one line The " U " tube 14 is connected to the bypass tube 24 between the heat exchanger 10 and the flat tube 12 connected to the " U " tube 14. The second heat exchanger 20 is connected in a zigzag by bypass.

A plurality of corrugated heat transfer fins 30 for promoting heat exchange of the refrigerant are interposed between the flat tubes 12 and 22.

Such a heat exchanger having a parallel structure is composed of a clad material coated with a solvent on the surface of the flat tube (12, 22) and the heat transfer fin (30), pre-assembled in a predetermined form, and then integrally formed by brazing welding.

Here, the "U" shaped tube 14 is connected while skipping the flat tube 12 line by line so that the flow of the refrigerant can pass through the zigzag.

On the other hand, the bypass connecting tube 24 is a flat tube of the second heat exchanger 20 interposed between the flat tube 12 of the first heat exchanger 10 connected by the "U" shaped tube (14) 22) is bypassed to the front or rear of the "U" shaped tube (14) for connection.

Thus, the first heat exchanger 10 and the second heat exchanger 20 have a flow of refrigerant independent of each other.

The parallel heat exchanger has the same shape and structure as the first heat exchanger 10 and the second heat exchanger 20 are composed of one core. Therefore, when compared with the structure in which the two heat exchangers are disposed overlapping in the front and rear directions or the structure in which the two heat exchangers are deployed on the front surface, the installation space in the vehicle can be minimized and the air resistance can be reduced.

In addition, it can be manufactured at a time by the brazing process can lead to a simplified assembly process.

In particular, even if only one of the two heat exchangers to operate the heat exchanger fins 30 are all used for heat exchange, thereby exhibiting the effect of maximizing the heat exchange efficiency. That is, even if only the first heat exchanger 10 is operated, the heat transfer fins 30 bonded to the flat tube 22 of the second heat exchanger 20 are the same as the heat transfer fins 30 of the first heat exchanger 10. Heat exchange action takes place.

As described above, according to the present invention, the flat tube tube connected by the "U" shaped tube and the flat tube tube connected by the bypass connection tube are divided into separate systems, but are configured to exchange heat in one core, thereby minimizing the mounting space in the vehicle. At the same time, it can reduce air resistance due to the parallel configuration, can be manufactured at once by the brazing process, and the two heat exchangers are in contact with the heating fins at the same time to maximize the heat exchange efficiency of the heating fins.

Claims (1)

A plurality of flat tubes arranged at regular intervals, a plurality of corrugated heat transfer fins interposed between the tubes to promote heat exchange of the refrigerant, and a "U" shaped zigzag connecting the flat tubes one by one. Heat exchanger for a vehicle air conditioner, characterized in that the tube and the other flat tube between the "U" shaped tube and the flat tube connected between the bypass tube connected to the zigzag by bypassing the "U" shaped tube.