Liquid distributor of falling film evaporator and manufacturing method thereof

Abstract

The invention provides a liquid distributor of a falling film evaporator and a manufacturing method thereof. The liquid distributor comprises a bottom-layer liquid distribution plate and a top cover plate covering the bottom-layer liquid distribution plate, the bottom-layer liquid distribution plate and the top cover plate jointly define a liquid distribution cavity, an upper-layer liquid distribution plate and a middle-layer liquid distribution plate are arranged in the cavity in the height direction, a first-layer liquid distribution area, a second-layer liquid distribution area and a third-layer liquid distribution area are separated, the top cover plate is provided with an inlet connecting pipe communicating with the first-layer liquid distribution area, the edge of the upper-layer liquid distribution plate is bent and erected to form a side wall, vertical distribution holes and horizontal distribution holes are formed in the plate face and the side wall of the upper-layer liquid distribution plate correspondingly, through distribution holes are formed in the middle-layer liquid distribution plate, and the bottom-layer liquid distribution plate is provided with flanging stretching holes communicating with the third-layer liquid distribution area. When a certain pressure is applied to a refrigerant, the refrigerant is pressed into the first-layer liquid distribution area through the inlet connecting pipe, then is sprayed to the second-layer liquid distribution area at a high speed through the vertical distribution holes and the horizontal distribution holes of the upper-layer liquid distribution plate, and then sequentially passes through the middle-layer liquid distribution plate and the bottom-layer liquid distribution plate in a deceleration manner, so that fine and uniform distribution of the refrigerant is realized.

Description

technical field [0001] The invention belongs to the technical field of refrigeration machinery, in particular to a liquid distributor used in a falling film evaporator. Background technique [0002] The refrigeration system consists of a compressor, a condenser, an expansion valve, an evaporator, and a refrigerant. The evaporators are mainly divided into three types: dry evaporators, flooded evaporators, and falling film evaporators. Falling film evaporators are widely used in large chillers due to their advantages of high heat exchange efficiency and less refrigerant injection. [0003] The falling film evaporator mainly includes a shell, a liquid distributor and an evaporation tube. The liquid distributor is installed in the upper position of the shell. At the same time, the liquid distributor is connected with a refrigerant inlet pipe. in the housing below the liquid tank. The working process of the falling film evaporator is that the refrigerant enters the liquid distr...

AI Technical Summary

Problems solved by technology

[0009] The object of the present invention is to provide a liquid distributor of a falling film evaporator and its manufacturing method to solve the problem of uneven liquid distribution in the prior art

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