Efficient heat exchange pipe, heat exchanger with heat exchange pipe and air conditioner

Abstract

The invention discloses an efficient heat exchange pipe. The efficient heat exchange pipe comprises a main pipe, fins matched with the main pipe, and an end pipe at least arranged at one end of the main pipe. The end portion of the end pipe is provided with an edge wrapping section wrapping the outer surface of the main pipe part. The outer surface of the main pipe and the inner surface of the edge wrapping section are in seal fit through welding flux. The equivalent diameter of the inner diameter of a single hole of the main pipe is smaller than 7 mm, and at least one protruding tooth is arranged on the inner wall of the main pipe. According to the efficient heat exchange pipe, the connecting manner that the main pipe is inserted in the end pipe is adopted so that the pipe diameter of the main pipe can be set to be small, the pipe wall of the end pipe can be thickened, the strength of the heat exchange pipe is enhanced, meanwhile, the heat exchange efficiency is improved, the safety performance of the heat exchange pipe is good, and the heat exchange effect is high. Connection is achieved through the welding flux, the overall strength of the heat exchange pipe cannot be influenced, the welding position is not prone to leakage, and the service life of the heat exchange pipe is long. Through the arrangement of the high protruding teeth, the purpose of good heat transfer between media and a pipe body is achieved, and the heat exchange efficiency is extremely high.

Description

technical field [0001] The invention belongs to the technical field of air-conditioning heat exchange, and in particular relates to a high-efficiency heat exchange tube, a heat exchanger and an air conditioner provided with the heat exchange tube. Background technique [0002] With the rise of raw materials such as copper prices and the country's requirements for air-conditioning energy efficiency, copper tubes are developing in the direction of thinner diameters. With the setting of small inner diameters of copper tubes, when the overall structural size of the heat exchanger remains unchanged, the relationship between tubes and tubes The distance between them can be reduced, so that the efficiency of the fins is improved, the effective area of ​​heat transfer is increased, and the flow resistance when the air flows through is reduced. At the same time, the reduction of the inner diameter of the tube can increase the Re number of the fluid in the tube and increase the heat t...

AI Technical Summary

Problems solved by technology

[0003] The heat exchange tube is composed of a long tube and a small U-bend welded at one or both ends of the long tube. Due to the shielding of the side plates and fins, the welding torch can only use a top-down angle to check the length of the long tube and the small U-bend. The connection is welded, and the connection between the two cannot be welded from a bottom-up angle

Therefore, in the prior art, it is impossible to weld the long pipe into the small U-bend at all, and only the connection method of inserting the small U-bend into the long pipe can be used.

[0004] In order to adapt to the development of small inner diameter, it is necessary to limit the inner diameter of the long pipe to less than 7mm, and to realize the insertion of the elbow into the long pipe, the diameter of the small U-bend needs to be set smaller, so that the flow rate of the small U-bend Reduced, the resistance of the medium flowing in the small U-bend is very large, especia

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