Pressure constant temperature cold water hot water production system

Abstract

The invention discloses a pressure constant temperature cold water and hot water production system, which comprises a refrigeration unit, a water source, a first heat exchanger, a second heat exchanger, a cold water pressure self-control valve and a hot water pressure self-control valve; The compressor, condenser, throttling device and evaporator connected in turn by the circuit, the exhaust port of the compressor is connected to the condenser, and the suction port of the compressor is connected to the evaporator; the cold water pressure automatic control valve is set on the first water inlet pipe, The hot water pressure self-control valve is set on the second water inlet pipe, the refrigerant pipeline between the compressor suction port and the evaporator is connected with the cold water pressure self-control valve; the refrigerant pipe between the compressor discharge port and the condenser The road is connected with the hot water pressure self-control valve. The cold water pressure automatic control valve and the hot water pressure automatic control valve automatically adjust the water flow according to the fluctuation of the compressor suction pressure and discharge pressure respectively, so that the temperature of the cold water supplied to the cooling and heating units is more stable. The invention also has the effect of reducing cost and increasing efficiency.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to a device for producing cold water and hot water. Background technique [0002] With the development of economy and society, people have higher and higher requirements for the quality of life, and refrigeration technology has penetrated more and more into people's life and production process. In daily life, people need cooling and heating technology to lower the indoor temperature in summer and increase the indoor temperature in winter; bathing water needs a heat source to heat the normal temperature water. In a variety of industrial production processes, it is also necessary to control the ambient temperature or process temperature, resulting in devices such as constant temperature water baths, which require the preparation of cold water or hot water. [0003] Separately preparing cold water requires refrigeration. If vapor compression refrigeration is used, the heat gener...

AI Technical Summary

Problems solved by technology

Although this method of comparing the measured temperature with the preset temperature in real time and controlling the operating state of the compressor according to the comparison result can control the cold water temperature more accurately, it requires a more complex system to complete this control (temperature sensors, connecting lines, electric circuits, etc.) Control device, related structure for adjusting cooling capacity), the structure is complex and the cost is high

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