Controlling method for flow-divided type air cooling type constant-temperature constant-humidity air conditioner

Abstract

The invention discloses a controlling method for a flow-divided type air cooling type constant-temperature constant-humidity air conditioner. The constant-temperature constant-humidity adjustment to air through the flow-divided type air cooling type constant-temperature constant-humidity air conditioner is realized by automatically controlling the running status of a compressor, a three-way proportional adjusting valve, an auxiliary electrical heater and a humidifier. A reheating condenser is arranged in the air conditioner, the air is heated by the heat carried out by a compressed cooling agent and needing to be exhausted into air originally, thus an electrical heater in the constant-temperature constant-humidity air-conditioner in the prior art is replaced, and energy-saving and environment-friendly functions are achieved. The flow of cooling agent which enters the reheating condenser and an air-cooled condenser is adjusted by controlling the three-way proportional adjusting valve, and the purpose of accurate adjustment of air heating is realized.

Description

technical field [0001] The invention relates to the field of air conditioning, in particular to a control method for a split-flow air-cooled constant temperature and humidity air conditioner. Background technique [0002] The existing air-cooled constant temperature and humidity air conditioner adopts evaporator to cool down and dehumidify, reheat and adjust temperature through electric heating, and then adjust humidity through humidifier to meet the requirements of air-conditioned rooms with special temperature and humidity requirements, and provide constant temperature and humidity air. deal with. However, due to the general air-cooled constant temperature and humidity air conditioner, the reheating and temperature adjustment are all completed by electric heating, and most of the compressors work under the condition of constant frequency. If the compressor is fully turned on, under partial load conditions , the cooling capacity of the compressor is too large, the air supp...

AI Technical Summary

Problems solved by technology

However, due to the general air-cooled constant temperature and humidity air conditioner, the reheating and temperature adjustment are all completed by electric heating, and most of the compressors work under the condition of constant frequency. If the compressor is fully turned on, under partial load conditions , the cooling capacity of the compressor is too large, the air supply temperature of the air conditioner is significantly lower than the set temperature and humidity requirements, and a large amount of electric heating is required to achieve thermal compensation and ensure constant temperature and humidity. Although this method can achieve constant temperature and humidity purpose, but consumes a lot of energy

Taking an existing 25kW constant temperature and humidity air conditioning unit as an example, in addition to electric heating, the rated power of the whole machine is only 10kW, but it needs to be equipped with 18kW reheat electric heating capacity, which is twice that of the air conditioner, and the energy consumption Very huge, high energy consumption, and the operation of high-power electric heaters is prone to problems such as overheating, overcurrent, burning, and even fire, and the operation is unreliable

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