Heat exchanger

Abstract

The present invention provides a heat exchanger for split air conditioner, window air conditioner ect. various type. The heat exchanger comprises several heat exchanging pipes in which cool medium flows and radiator-fans fixed thereof, wherein, outlet of one-way heat exchanging pipe (1) and inlet of several ways heat exchanging pipe (1) are connected at the start position of two phases zone, and outlet of several ways heat exchanging pipe (1) and inlet of one-way heat exchanging pipe (1) are connected at the close position of two phases zone. The invention not only can reduce the flux of two phases zone to reduce the pressure reduction, but also can increase the heat exchanging area of the two phases zone, and the high heat exchanging factor of the two phases zone is adequately used to improve the heat exchanging capacity. Although the heat exchanging quantity of one-way is reduced because refrigeration agent quality flux is reduced, theory calculation and experience represents that the total heat exchanging quantity is increased, total pressure reduction is reduced, and the heat exchanging factor and pressure reduction are distributed evener. The method can be adopted for multiple loops heat exchanger if heat exchange is not even and the resistance is over large in each branch of loop.

Description

1. Technical field: [0001] The invention relates to a heat exchanger used in various types of split air conditioners, such as indoor units, outdoor units and window air conditioners, and belongs to the innovative technology of heat exchangers. 2. Background technology: [0002] In the research on the enhanced heat transfer of existing heat exchangers, people focus more on changing the fin type and the internal structure of the heat exchange tube. The improvement of the fin form and the internal structure of the heat exchange tube has a significant effect on the overall efficiency of the heat exchanger greater impact. However, the arrangement form of the heat exchange tubes, that is, the flow route and flow direction of the refrigerant in the heat exchange tubes is rarely involved. Theoretical research shows that for a single-circuit heat exchanger (evaporator or condenser), along the flow direction of the refrigerant in the tube, the thermal resistance of the single-phase r...

AI Technical Summary

Problems solved by technology

Obviously, the thermal resistance in the single-phase area is too high, the heat transfer coefficient is low, and the pressure drop and heat transfer coefficient in the two-phase area are too high, causing uneven heat transfer in the entire heat exchanger

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