A control method of a compensating dual-source heat pump chiller and hot water unit
A cold and hot water unit, dual-source heat pump technology, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of long heating time, short cooling time, and ground source heat imbalance.
Active Publication Date: 2018-01-12
GUANGDONG SHENLING ENVIRONMENT SYST CO LTD +1
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Problems solved by technology
[0006] In view of this, the purpose of the present invention is to overcome the deficiencies of the prior art and provide a compensating dual-source heat pump chiller and hot water unit and its control method, which solves the problems caused by the long heating time and short cooling time of traditional ground source heat pump air conditioners. The problem of ground source heat imbalance
Method used
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Embodiment 1
[0058] Such as figure 1 As shown, a compensated dual-source heat pump chiller and hot water unit includes a refrigeration system, a ventilation system, a compensated water source system and an automatic control system;
[0059] The refrigeration system includes a refrigerant circulation loop composed of a water source heat exchanger 14, an air-cooled heat exchanger 17, a use side water heat exchanger 118, a compressor 11 and a four-way valve 12;
[0060] The refrigerant circulation loop is specifically:
[0061] The exhaust port of the compressor 11 is connected to the first interface of the four-way valve 12, the second interface of the four-way valve 12 is connected to the first refrigerant inlet and outlet of the water source heat exchanger 14, and the second refrigerant inlet and outlet of the water source heat exchanger 14 passes through the water source The heat exchanger expansion valve 16 is connected to the first refrigerant inlet and outlet of the air-cooled heat ex...
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The invention discloses a control method of a compensation type dual-source heat pump cold and hot water unit. The method is realized by the compensation type dual-source heat pump cold and hot water unit, which concretely comprises a refrigeration system, a ventilation system, a compensation type water source system and a self-control system; the refrigeration system comprises a refrigerant circulation loop formed by a water source heat exchanger, an air cooling heat exchanger, a use side water heat exchanger, a four-way valve and a compressor, the compensation type water source system comprises a heat source side secondary refrigerant circulation loop formed by sequentially serially connecting a compensation surface cooler, a water source heat exchanger, a buried heat exchange coil, a water pump and a compensation surface cooler electric valve, and a compensation surface cooler bypass electric valve is arranged on the heat source side secondary refrigerant circulation loop. The self-control system controls the refrigeration system, the ventilation system and the compensation type water source system to operate in a matching manner, and six modes of ground heat heating, air source heating, ground heat refrigerating, air source refrigerating, defrosting operating and heat compensating operation of the unit are realized, and the defect in the prior art that sufficient heat cannot be stably provided for long term is solved.
Description
technical field [0001] The invention relates to the technical field of heat pump air conditioners, in particular to a control method of a compensation type dual-source heat pump cold and hot water unit. Background technique [0002] At present, there are common ground source heat pump cold and hot water units, which use ground sources to provide cold and heat sources for cooling and heating operations of cold and hot water units, and provide cold or hot water for air conditioning. [0003] Generally speaking, the ground source heat pump unit mainly consists of a compressor, a condenser, an evaporator, an expansion valve, and a four-way valve to form a circulation loop. In the cooling state, the high-pressure refrigerant vapor discharged from the compressor flows into the condenser through the four-way valve, the refrigerant vapor is condensed into liquid, enters the evaporator through the expansion valve, and absorbs heat in the evaporator, and the water in the cooling room ...
Claims
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IPC IPC(8): F25B49/02
Inventor 朱建章欧冠锋邹志胜林创辉黄保民张学伟邱育群蔡乐坤
Owner GUANGDONG SHENLING ENVIRONMENT SYST CO LTD