Heat exchanging device

Abstract

Disclosed is a heat exchanging device. The heat exchanging device comprises a shell with an opening in one side and a heat exchanging core partially or wholly stored in the shell. The shell comprisesan outer shell body and separators. The separators are arranged in the outer shell body to make the shell form a first cavity, a second cavity and a third cavity. The separators include the first separating wall, the first wall part and the second wall part. The first wall part is formed between the first cavity and the third cavity. The second wall part is formed between the second cavity and thethird cavity. A first communicating hole is formed in the first wall part. The first cavity communicates with the third cavity through the first communicating hole. A second communicating hole is formed in the second wall part. The second cavity communicates with the third cavity through the second communicating hole. The outer shell body is an integral injection molded part or a whole cast part.The heat exchanging device is simple in processing and installation, low in weight and low in cost.

Description

【Technical field】 [0001] The invention relates to heat exchange equipment, in particular to a heat exchange device. 【Background technique】 [0002] CO2 is a new type of environmentally friendly refrigerant, which can reduce the global greenhouse effect and fundamentally solve the problem of environmental pollution caused by compounds. It has good economy and practicability. The compression refrigeration cycle system using CO2 as the working fluid can be used in most refrigeration / heating fields. [0003] However, the working pressure of the CO2 refrigeration system is high, and this characteristic of this type of system should be fully considered when designing a CO2 heat exchange device. The design of its components is still immature, so this type of system is not widely used. Generally speaking, CO2 heat exchange devices mainly include tube-fin type, micro-channel, plate type, shell-and-tube type, plate-fin type and casing type. Among them, the plate type and plate-fin t...

AI Technical Summary

Problems solved by technology

Among them, the manufacturing process of plate type and plate-fin type is complicated, and the wall thickness of tube-fin type, casing type and shell-and-tube type needs to be thicker, which wastes materials

[0004] However, the traditional CO2 microchannel heat exchange device uses forced convection between refrigerant and air to exchange heat, which has low efficiency.

Although the physical properties of liquid and air are quite different, and the liquid-gas heat exchange method has high heat exchange efficiency, the liquid-gas heat exchange device in the prior art has problems such as complicated shell processing and installation, and heavy weight.

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