A spray falling film evaporator and its liquid level control method

A falling-film evaporator and falling-film evaporation technology, applied in evaporator/condenser, refrigerator, refrigeration components, etc., can solve the problems of uneven spraying, high cost, high energy consumption, etc., and achieve the energy efficiency ratio of the unit. High efficiency, high utilization efficiency, and the effect of saving heat exchange materials

Active Publication Date: 2017-09-22
GUANGDONG SHENLING ENVIRONMENT SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent uses a pump to achieve spraying, which consumes a lot of energy, costs high, and sprays unevenly

Method used

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  • A spray falling film evaporator and its liquid level control method
  • A spray falling film evaporator and its liquid level control method
  • A spray falling film evaporator and its liquid level control method

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Embodiment 1

[0033]A spray falling film evaporator, comprising a cylinder body 1, a spray refrigerant distribution system, a refrigerant flow deflector assembly, a refrigerant liquid level control system, a falling film evaporation heat exchange tube 3, a gas refrigeration agent outlet 5

[0034] and oil return outlet 7.

[0035] The spray refrigerant distribution system includes a refrigerant liquid inlet pipe 21 arranged at the upper end of the cylinder, a refrigerant distributor upper cover 22 connected to the refrigerant liquid inlet pipe 21 and a refrigerant distributor equal distribution plate 23 A plurality of small holes are arranged on the equal distribution plate 23 of the refrigerant distributor, and the refrigerant speed-up diffusion device is a refrigerant speed-up diffusion nozzle 41 installed on the small holes. The refrigerant speed-up diffusion nozzle 41 is a reducer plus an expander, a Venturi tube or an expander. The radial cross-section of the refrigerant speed-up dif...

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PUM

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Abstract

The invention discloses a spray-type falling film evaporator and a liquid level control method thereof. The spray-type falling film evaporator comprises a barrel body, falling film evaporation heat exchange tubes, a gas refrigerant outlet and a return oil outlet and further comprises a spray-type refrigerant distribution system, wherein the spray-type refrigerant distribution system is provided with a refrigerant speed increase and diffusion device for evenly diffusing a refrigerant to multiple falling film evaporation heat exchange tubes. The spray-type falling film evaporator has the advantages that the spray-type falling film evaporator is high in spraying speed and heat exchange coefficient, large in spraying coverage range, even in drop amount distribution, high in heat exchange area utilization rate and good in overall heat exchange performance, the heat exchange effect is improved while heat exchange materials are saved, a unit is high in energy efficiency ratio and stable and reliable in operation, and the like, meets national energy-saving and emission-reducing policies, has high economic and social benefits and is worthy of vigorous popularization.

Description

technical field [0001] The invention relates to a falling film evaporator, in particular to a spray falling film evaporator and a liquid level control method thereof. Background technique [0002] At present, the water chiller has adopted a dripping falling film evaporator, through the distribution of liquid refrigerant dripping onto the heat exchange tube, forming a liquid film on the surface of the heat exchange tube, so that the heat exchange tube forms a film-like evaporation. The refrigerant on the surface of the tube is in a flowing state. Compared with the static refrigerant on the surface of the traditional flooded evaporator, the heat transfer coefficient is improved. Compared with heat exchange tubes surrounded by refrigerant, the refrigerant charge in the evaporator is greatly reduced, and the concentration of lubricating oil in the refrigerant is also increased, making it easier for the unit to return oil, and its theoretical performance is better than that of fl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B39/02F25B49/00
CPCF25B39/028F25B49/02F25B2339/021F25B2500/09
Inventor 林创辉陈华李云鹏彭雨张晓艳邱小亮文东林
Owner GUANGDONG SHENLING ENVIRONMENT SYST CO LTD
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