Direct evaporation type water-cooling fresh air unit

Abstract

The invention discloses a direct evaporation type water-cooling fresh air unit. An air inlet regulation valve (2) is arranged at one end of a fresh air processing box body (1), an air filter (3) is arranged on the inner side of the air inlet regulation valve, and a fan (9) is arranged at the other end of the fresh air processing box body (1). Three refrigerating circuits capable of operating separately or simultaneously are arranged, and the first refrigerating circuit comprises an inverter compressor (10), a first plate heat exchanger (13), a first liquid storage tank (15), a first dry filter (18), a first thermal expansion valve (21) and a first evaporator (4) which are connected through a refrigerating fluid pipe. The second refrigerating circuit comprises a first constant-speed compressor (11), a second plate heat exchanger (14), a second liquid storage tank (16), a second dry filter (19), a second thermal expansion valve (22) and a second evaporator (5) which are connected through a refrigerating fluid pipe. The third refrigerating circuit comprises a third constant-speed compressor (12), a condensing coil (7), a third liquid storage tank (17), a third dry filter (20), a third thermal expansion valve (23) and a third evaporator (6) which are connected through a refrigerating fluid pipe. The direct evaporation type water-cooling fresh air unit can operate stably under wide meteorological conditions to meet a dehumidification requirement of an air conditioning system, improve comfort of supplied air and prevent moisture condensation at an air outlet.

Description

technical field [0001] The invention relates to a fresh air unit, specifically a direct evaporative water-cooled fresh air unit based on an independent temperature and humidity control air conditioning system. Background technique [0002] Central air-conditioning system energy saving is an important part of building energy saving. The air-conditioning system with independent temperature and humidity control is a form of air-conditioning system that has developed rapidly in recent years. It uses two independent systems to control and adjust indoor humidity and temperature respectively, avoiding conventional The waste of energy and the reduction of air quality caused by the combined treatment of temperature and humidity in the system. The advantages of temperature and humidity independent control air conditioning system in building energy saving have been understood and accepted by more and more people in the HVAC industry, and have been more and more applied in actual projec...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the characteristics that the existing direct evaporative water-cooled fresh air unit cannot meet the fresh air treatment requirements of the air-conditioning system with independent temperature and humidity control when the outdoor weather conditions change, the present invention provides a direct evaporative water-cooled fresh air unit, which can not only make the unit work in a wide range of weather It can run stably under certain conditions, meet the dehumidification requirements of the air conditioning system, and can also improve the comfort of air supply and prevent condensation at the air outlet

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