Air conditioner used thin finned tube heat exchanger

Abstract

The invention discloses an air conditioner used thin finned tube heat exchanger, which includes a plurality of parallel radiating fins provided with rows and lines of expansion joint holes, as well as rows and lines of heat transfer tubes in vertical expansion joint with the radiating fins through the expansion joint holes, wherein forced ventilation and heat exchange on the outer sides of the heat transfer tubes of the heat exchanger are performed through a blower. The heat exchanger is characterized in that the progressive decrease direction of air flow speed of the blow is set as the X direction, the radiating fins arranged in the X direction are gradually narrowed, and the line amount of the expansion joint holes arranged in the radiating fins is gradually reduced. According to the invention, the line amount of the heat transfer tubes of a radiator is adjusted with respect to the problem of progressive decrease of air flow speed, that is to say, the line amount of the heat transfer tubes is bigger at the area with big air flow speed and smaller at the area with small air flow speed; the radiating fins are wider at the area with big air flow speed and are narrowed at the area with small air flow speed, so that the average heat exchange efficiency in unit area is improved, as a result, the performance of the refrigeration system is enhanced.

Description

technical field [0001] The invention relates to a thin-diameter fin-tube heat exchanger for an air conditioner, in particular to a thin-diameter fin-tube heat exchanger with more pipeline flows and more tube rows. Background technique [0002] The finned tube heat exchanger is the most commonly used heat exchanger in the field of refrigeration and air conditioning, and has the advantages of simple structure, reliability, and low cost. [0003] The heat exchange tubes of the existing finned tube heat exchanger are generally made into multiple rows and columns, and the number of tube rows along the airflow direction of the same heat exchanger is equal. The advantage is that the shape of the fins is rectangular and the processing technology is simple. However, there are still the following problems in actual use: [0004] Such as figure 1 As shown, the existing air-conditioning heat exchangers 1 (especially condensers) generally use heat transfer tubes 12 with an outer diame...

AI Technical Summary

Problems solved by technology

However, in practical applications, there are still many problems that need to be further studied: if the diameter of the tube becomes smaller, the flow and heat transfer inside the tube will change greatly. Without consideration, simply replace "thick" with "thin", The state parameters of the refrigeration system will deviate from the normal range; when the pipe diameter becomes smaller, the heat transfer area outside the pipe will also become smaller, and the performance of variable working conditions such as low temperature heating will also be affected

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