Constant-temperature constant-humidity air conditioner with heat pump type dehumidifying device and control system thereof

Abstract

The invention relates to a constant-temperature constant-humidity air conditioner with a heat pump type dehumidifying device and a control system thereof. The constant-temperature constant-humidity air conditioner comprises a first heat exchanger, an external fan, a compressor, a connecting pipe, a four-way valve, a second heat exchanger, a third heat exchanger, a liquid storing device, a first capillary pipe, a second capillary pipe, a gas-liquid separator, an internal fan, a humidifier, a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve, a fourth electromagnetic valve, a first one-way valve, a second one-way valve, a third one-way valve, a fourth one-way valve, a fifth one-way valve, a sixth one-way valve, a seventh one-way valve, an eighth one-way valve and a ninth one-way valve, wherein the first heat exchanger and the external fan are arranged in a box of an outdoor unit, and the compressor, the connecting pipe, the four-way valve, the second heat exchanger, the third heat exchanger, the liquid storing device, the first capillary pipe, the second capillary pipe, the gas-liquid separator, the internal fan, the humidifier, the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the fourth electromagnetic valve, the first one-way valve, the second one-way valve, the third one-way valve, the fourth one-way valve, the fifth one-way valve, the sixth one-way valve, the seventh one-way valve, the eighth one-way valve and the ninth one-way valve are arranged in the box of an indoor unit. Due to the adoption of a heat pump type dehumidifying structure, the invention has favorable energy-saving effect. Due to the adoption of a special all-digital hardware structure and information processing, the invention has strong anti-interference capability, high control precision, reliable system work, high intelligent degree, and the like.

Description

technical field [0001] The invention relates to a constant temperature and humidity air conditioner with a heat pump type dehumidification device and its control system. Background technique [0002] At present, constant temperature and humidity air conditioners are mainly used in industrial production, where there are special requirements for the work area, such as food processing, microelectronics manufacturing, tea processing, high-quality printing, etc. The existing constant temperature and humidity air conditioner uses electric heating to heat up the humid air when it is working in the dehumidification state. The working situation of the air conditioner is the same, but when the system works in the "dehumidification" state, a high-power electric heating device is required. Due to the inherent low efficiency of electric heating, the constant temperature and humidity air conditioner becomes a "big power consumer"; in addition, the existing control system generally Using ...

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Problems solved by technology

The existing constant temperature and humidity air conditioner uses electric heating to heat up the humid air when it is working in the dehumidification state. The working situation of the air conditioner is the same, but when the system works in the "dehumidification" state, a high-power electric heating device is required. Due to the inherent low efficiency of electric heating, the constant temperature and humidity air conditioner becomes a "big power consumer"; in addition, the existing control system generally Using PLC controller and analog sensor, the hardware structure of the control system is complex and the integration level is low. The temperature and humidity detection accuracy is greatly affected by the hardware system design and component quality, the degree of intelligence is low, and the maintenance is inconvenient.

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