A Falling Film Evaporator with Gravity Separation

Abstract

The present invention relates to evaporation devices. A falling film evaporator with gravity liquid separation, including an evaporator cylinder with a return pipe, a liquid inlet pipe and a gas baffle. The gravity distribution plate under the static pressure equalizing plate, the static pressure equalizing plate is provided with a connecting hole connected to the gravity distribution plate, the side wall of the gravity distribution plate is provided with an exhaust hole, the bottom wall is provided with a liquid outlet hole, the air baffle plate and the gravity distribution plate Connected together to divide the evaporator cylinder into an upper space and a lower space, the gas baffle is provided with a window connecting the upper space and the lower space, the inlet of the air return pipe is located in the upper space, and the lower space is also provided with a bottom wall The gravity redistribution plate of the liquid port and the heat exchange tubes distributed above and below the gravity redistribution plate. The invention has the advantages of good evaporation effect, small pressure drop and difficulty for wet steam to enter the return air pipe, and solves the problems of poor evaporation effect, large pressure drop and easy entry of wet steam into the return air pipe in the existing falling film evaporation device.

Description

technical field [0001] The invention relates to an evaporation device, in particular to a falling film evaporation device with gravity liquid separation. Background technique [0002] The falling film evaporator represents the advanced technology of water-cooled shell-and-tube heat exchangers in the refrigeration industry, and the key component is the liquid distributor built into the evaporator shell. The existing liquid distributors are all pressure spray type. The gas-liquid two-phase passes through several layers of liquid separation plates integrated in the liquid distributor and then sprays downwards onto the heat exchange tubes to realize falling film evaporation, so there are: poor evaporation effect, large pressure drop and wet steam easily entering the return pipe and affecting compressor life. Contents of the invention [0003] The invention provides a falling film evaporation device with gravity liquid separation, which has good evaporation effect, small press...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a falling film evaporation device with gravity liquid separation, which has good evaporation effect, small pressure drop and wet steam is not easy to enter the return pipe, which solves the problem of poor evaporation effect and large pressure drop of the existing falling film evaporation device And the problem that wet steam easily enters the return pipe and affects the life of the compressor

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