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A spray falling film evaporator and its liquid level control method

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

Active Publication Date: 2017-08-11
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

[0034] 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 and return oil 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 diffusion no...

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Abstract

The invention discloses a sprinkling falling film type evaporator and a liquid level control method thereof. The sprinkling falling film type evaporator comprises a cylinder body, a plurality of falling film type evaporation heat exchange pipes, a gaseous refrigerant outlet, an oil return outlet, and a refrigerant flowing guide plate assembly, wherein a gaseous refrigerant exchanges heat with the falling film type evaporation heat exchange pipes, and then enters the gaseous refrigerant outlet through the refrigerant flowing guide plate assembly. The sprinkling falling film type evaporator has the advantages that the integral energy efficiency ratio is high, the cost is low, the sprinkling speed is high, the heat exchange coefficient is high, the sprinkling coverage range is large, the distribution of sprinkling amount is uniform, the utilization rate of heat exchange area is high, the heat exchange material is saved, and the heat exchange effect is improved; the integral heat exchange property is good, the unit energy efficiency ratio is high, and the unit running is stable and reliable; the national energy-saving and emission-reduction policies are met, the economic and social benefits are higher, and the sprinkling falling film type evaporation device is worthy of being widely popularized.

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): F25B39/02F25B49/02
CPCF25B39/02F25B49/02
Inventor 林创辉张学伟邱小亮张晓艳彭雨李云鹏刘鑫龙
Owner GUANGDONG SHENLING ENVIRONMENT SYST CO LTD
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