Internal threaded copper pipe for air conditioner

Abstract

The invention belongs to the field of internal threaded pipelines for heat exchangers, in particular to an internal threaded copper pipe for an air conditioner. The internal threaded copper pipe comprises a copper pipe body, a second spring, cylindrical blocks and water stirring plates, wherein internal threads are formed in the inner surface of the copper pipe body; the cylindrical blocks are positioned in the copper pipe body, and the water stirring plates are uniformly arranged in the circumferential directions of the cylindrical blocks; and the shape of the vertical section of each water stirring plate is in an obtuse triangle shape; and one end of the second spring is fixedly connected with the top ends of the water stirring plates, the other end of the second spring is fixedly connected with a steel ball, the second spring is a compression spring, and the steel ball slides along internal thread teeth. According to the internal threaded copper pipe for the air conditioner, a refrigerant flows through the copper pipe body from right to left, the refrigerant impacts the water stirring plates, so that the flow rate of the refrigerant is slowed down, and the heat exchange time between the refrigerant and the wall of the copper pipe body is longer; and the refrigerant impacts the inner wall of the copper pipe body through the water stirring plates, so that the refrigerant close to a central part of the copper pipe body can also contact with the inner wall of the copper pipe body in time, the refrigerant in per unit volume can absorb more heat on the copper pipe body, and the heat exchange efficiency is improved.

Description

technical field [0001] The invention belongs to the field of internally threaded pipes for heat exchangers, in particular to an internally threaded copper pipe for air conditioners. Background technique [0002] At present, the threads of an internally threaded copper pipe for an air conditioner are all designed as a regularly arranged thread according to the needs. The main tooth types include ordinary teeth, thin and tall teeth, and cross teeth, etc., to improve heat transfer efficiency. This single-tooth type internally threaded copper pipe has poor heat dissipation effect. [0003] In the prior art, there are also technical solutions for internally threaded copper pipes for air conditioners. For example, a Chinese patent with application number 2015208628983 discloses an internally threaded copper pipe for air conditioners, including a pipe body, which is characterized in that the pipe The internal wall is intersected with a first internal thread tooth and a second inte...

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Problems solved by technology

[0004] This technical scheme has the characteristics of simple structure, but this scheme cannot guide the refrigerant in the center of the copper tube to flow to the inner wall of the copper tube through the water stirring plate, so as to speed up the heat exchange efficiency between the inner wall of the copper tube and the central refrigerant of the copper tube, without stirring the water. There are semi-cylindrical protrusions on the plate, and the refrigerant is added to form turbulent flow. There is no through hole on the copper tube wall, which increases the contact area between the inner wall of the copper tube and the refrigerant, and improves the distance between the refrigerant and the inner wall of the copper tube. The heat exchange efficiency is high, and the copper powder in the copper tube cannot be filtered to reduce the wear of the copper powder impurities in the refrigerant on the inner wall of the copper tube. Therefore, there are still many defects in this technical solution

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