Temperature adjusting and dehumidifying air-conditioning unit with double evaporators

Abstract

The invention discloses a temperature adjusting and dehumidifying air-conditioning unit with double evaporators, which forms a temperature adjusting and dehumidifying system with double evaporators by using two evaporators, two condensers, a compressor, a liquid reservoir, a gas-liquid separator, an expansion valve, an electromagnetic valve and a refrigerant pipeline, controls the humidity of theoutlet air of the unit by adjusting the flow rate of air flowing through the two evaporators according to the humidity content of the indoor air of the adjusted area or the inlet air of the unit, controls the temperature of the outlet air of the unit by adjusting the flow rate of the refrigerant flowing through the two condensers according to the temperature of the indoor air of the adjusted areaor the inlet air of the unit, and realizes the continuous and independent control of the parameters of the temperature and the humidity of the outlet air of the unit. The two evaporators have different evaporating temperatures. The invention has wide application range and good adjusting performance, can be suitable for the temperature adjusting and dehumidifying application places where the heat load and the humidity load have a wider range of change, and is especially suitable for the underground construction and air-conditioning application places with high requirements for dehumidifying.

Description

technical field [0001] The invention relates to a refrigeration dehumidification device, in particular to a double evaporator temperature-regulating dehumidification air-conditioning device, which belongs to the technical field of refrigeration, air-conditioning and dehumidification, and is especially suitable for underground engineering and air-conditioning applications with high requirements for dehumidification. Background technique [0002] Refrigerated thermostat dehumidification air conditioning unit is an air treatment equipment that uses its evaporator to cool and dehumidify the air, and recovers part of the condensation heat of the unit to heat the air after freezing and dehumidification. It is an efficient and energy-saving dehumidification method. It has been widely used It is used in dehumidification and temperature control of underground engineering and dehumidification and drying of grain, wood and food. [0003] At present, the common refrigerated dehumidifier...

AI Technical Summary

Problems solved by technology

Therefore, whether the compressor runs or not depends on whether the indoor humidity reaches the design value. When the humidity reaches the set value, the compressor stops. At this time, the dehumidifier loses the temperature adjustment function of the air supply, which will inevitably cause relatively high indoor temperature and humidity. Large fluctuations, that is, it is difficult to effectively adjust and control the indoor temperature and humidity, especially in the occasions where the heat-humidity ratio and humidity load change greatly

Wu Maojie et al. conducted research on a double condenser temperature-regulating dehumidifier with an indoor condenser connected in series with an outdoor condenser (Wu Maojie, Liu Fengtian, Tian Wei. Research on the temperature-regulating blind area of ​​a temperature-regulating dehumidifier. Building Thermal Ventilation and Air Conditioning, 2001, 4, 12-14.), pointing out that in the case of double condensers connected in series, there is a dead zone in the outlet air temperature of the dehumidifier, that is, when the air supply parameters required by the adjusted area are in the dead zone parameters, the temperature and humidity of this type of dehumidifier cannot be met. control requirements

[0004] To sum up, the current temperature-adjusting dehumidifiers can only be applied to specific applications, with poor adjustment ability and narrow application range, and cannot adjust the temperature of the outlet air. Double continuous adjustment of temperature and humidity, that is, it is difficult to achieve double effective regulation of temperature and humidity in the regulated area. In some occasions where the heat and humidity load changes significantly, the existing technology is difficult to meet the actual requirements for good control of temperature and humidity

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