Heat source tower heat pump multi-split system

Abstract

The invention provides a heat source tower heat pump multi-split system. The system comprises a heat source tower, a heat pump main machine and at least two indoor units; the heat pump main machine comprises a four-way valve, a compressor, a main machine heat exchanger and a solution pump; one end of a heat source liquid pipeline in the main machine heat exchanger is in communication with an inputend of the heat source tower through the solution pump, and the other end of the heat source liquid pipeline in the main machine heat exchanger is in communication with an output end of the heat source tower; each indoor unit comprises an indoor heat exchanger and an expansion valve; and one end of a refrigerant pipeline in each indoor heat exchanger is in communication with an E pipe of the four-way valve, and the other end of the refrigerant pipeline in each indoor heat exchanger is in communication with one end, which is not in communication with the main machine heat exchanger, of the expansion valve. According to the heat source tower heat pump multi-split system, the requirements of refrigeration and heat supply can be met at the same time by one system, the efficient and energy-saving operation can be realized all the year, and meanwhile, the problem of automatic detection of the anti-freezing fluid concentration of the heat source tower heat pump system is solved.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to a heat source tower heat pump multi-connection system. Background technique [0002] At present, most of the multi-split air-conditioning systems on the market are air-cooled multi-split units, which are generally composed of indoor units and outdoor units. Cooling or heating is achieved through heat exchange between the outdoor units and the air. In summer, the air-cooled multi-connected unit adopts air cooling, the condensing temperature is high, and the energy efficiency ratio of the unit is low; when the heating operation is in winter, there is frosting, which leads to the attenuation of heating capacity, and defrosting consumes energy, which reduces the efficiency of the unit , which is not conducive to continuous heating, affecting the stability of the unit and indoor thermal comfort. For large-scale buildings such as high-rise, large-scale buildings and other pro...

AI Technical Summary

Problems solved by technology

[0006] The invention provides a heat source tower heat pump multi-connection system, which realizes that a set of systems can meet the cooling and heating requirements at the same time, and at the same time solves the problem of online detection of the antifreeze solution concentration of the heat source tower heat pump system, so as to respond quickly to changes in solution concentration, effectively Prevent the antifreeze solution from freezing and ensure the stable and efficient operation of the system

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