Full fresh air heat pump type constant temperature and constant humidity air conditioning system

Abstract

The invention relates to a full fresh air heat pump type constant temperature and constant humidity air conditioning system which comprises at least two groups of working units mounted in an outdoor unit, an air treatment device mounted in an indoor unit, and a control system, wherein each group of working unit respectively comprises a compressor, an oil separator, a four-way reversing valve, an outdoor heat exchanger, a first expansion valve, a drier filter, a liquid supply electromagnetic valve, a second expansion valve and a liquid storage and accumulation energy-saving heat exchanger; theair treatment device comprises an indoor heat exchanger, a humidifier, a heater and a centrifugal fan which are arrayed in sequence; and the air treatment device is shared by all the working units. The air conditioning system overcomes the phenomenon that the normal operation of the units is influenced by changes of a full fresh air working condition and the phenomenon that a large quantity of energy is consumed by the units due to the adoption of electricity, steam, hot water and the like as heat sources during winter heating.

Description

technical field [0001] The invention relates to an air conditioning system, in particular to a constant temperature and humidity air conditioning system using heat pump technology under fresh air conditions. Background technique [0002] With the continuous improvement of the quality of life, people's requirements for indoor air quality are getting higher and higher, especially for various laboratories and storage rooms. High-quality air quality is also particularly urgent. At present, there are generally two methods for air treatment in various laboratories: one is to directly send fresh air to the room through the fan, and install ordinary constant temperature and humidity machines in the room. Due to the difference in fresh air temperature in different seasons, the room temperature fluctuates The temperature and humidity of the room cannot meet the process and experimental requirements; the second is to use a fresh air air conditioner unit plus a dehumidifier, humidifier ...

AI Technical Summary

Problems solved by technology

At present, there are generally two methods for air treatment in various laboratories: one is to directly send fresh air to the room through the fan, and install ordinary constant temperature and humidity machines in the room. Due to the difference in fresh air temperature in different seasons, the room temperature fluctuates The temperature and humidity of the room cannot meet the process and experimental requirements; the second is to use a fresh air air conditioner unit plus a dehumidifier, humidifier and heater to form a system. The fresh air air conditioner is responsible for controlling the room temperature. The room humidity is adjusted by turning on the humidifier and humidifier. Most of them use electric heating to adjust the temperature, which is neither energy-saving, nor can the control accuracy meet the temperature and humidity requirements of the room. Moreover, because it is not a control system, the reliability of the unit operation cannot be guaranteed.

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