A dual-temperature radiant heat pump room air conditioner capable of handling fresh air

Abstract

A dual-temperature radiation heat pump type room air conditioner capable of processing fresh air comprises an air compressor. The air compressor is connected with an outdoor heat exchanger through a four-way reversing valve, the outdoor heat exchanger is connected with a metal radiation plate and an induction-type fresh air processor which are connected in parallel, a valve combination is arranged on a connecting pipeline, and the metal radiation plate and the induction-type fresh air processor are connected with the four-way reversing valve and the outdoor heat exchanger through an ejector and a three-way valve backwards. The refrigerant flow path is changed through the four-way reversing valve, the three-way valve and the valve combination to enable the metal radiation plate and the induction-type fresh air processor to serve as a parallel evaporator in the summer working condition and to serve as a parallel condenser and provide the defrosting working condition in the winter working condition. The dual-temperature radiation heat pump type room air conditioner meets the cold source requirement for temperature and humidity independent control in the summer working condition of the single air compressor, the dual advantages of radiation and fresh air heat / cold supplying are adopted in the winter working condition and the summer working condition, the quality of indoor air can be improved, the thermal comfort can be improved, secondary heat exchanging losses can be avoided and the energy utilization rate can be increased.

Description

technical field [0001] The invention belongs to the field of heating, ventilating and air conditioning, and in particular relates to a dual-temperature radiation heat pump room air conditioner capable of processing fresh air. Background technique [0002] Traditional air conditioners generally use cold water at 7°C or lower as the refrigerant for cooling in summer to achieve dehumidification and cooling of the air. Usually, low-temperature cold water lower than the dew point temperature of the indoor air is used to treat the sensible heat and latent heat load of the room, but this part of the energy for processing the sensible heat load can be taken away by the high-temperature cold source, thus causing a waste of high-grade energy; traditional air conditioners in winter In heating conditions, a heat medium with a relatively high temperature is usually used to deal with indoor circulating air. Usually convection is used to exchange heat with the air, and the temperature dif...

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Problems solved by technology

[0005] In order to overcome the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a dual-temperature radiant heat pump room air conditioner that can handle fresh air. Only a single compressor is needed, and the refrigerant passes through two thermal expansion valves under summer conditions. After throttling, it enters the metal radiant plate and the inductive fresh air processor to evaporate and gasify to meet the demand for cold sources. The metal radiant plate conducts heat exchange to the room by convection and radiation, and the inductive fresh air processor conducts heat exchange on the fresh air in the form of convection. Cooling and dehumidification; In winter working conditions, indoor metal radiant panels and inductive fresh air processors serve as condensers to avoid secondary heat loss caused by radiant air conditioners using water as a cooling and heating medium. The system directly uses metal radiant panels and inductive fresh air The processor acts as a condenser to adjust the indoor environment, and can adopt a lower condensing temperature to improve the performance coefficient of the system; combined with independent fresh air treatment, it can improve the poor control quality of traditional air-conditioning indoors and the lack of comfort caused by the large temperature difference of the air supply. good question

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