Sprinkling falling film type evaporator and liquid level control method thereof

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...

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

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