Liquid cooling source unit with function of precisely controlling temperature and control method

Abstract

The invention discloses a liquid cooling source unit with the function of precisely controlling temperature and a control method. The liquid cooling source unit comprises a compressor, a condenser, an evaporator and a heating device. A liquid outlet of the evaporator is connected with a liquid inlet of the compressor. An exhaust port of the compressor is connected with an air inlet of the condenser, and an electric control valve is arranged between the compressor and the evaporator. A liquid outlet of the condenser is connected with one liquid inlet of the evaporator, and a throttling device is arranged between the condenser and the evaporator. A liquid outlet of the heating device is connected with a liquid inlet of a water tank. A liquid outlet of the water tank is connected with a liquid inlet of a liquid supply pump. A liquid outlet of the liquid supply pump is connected with the other liquid inlet of the evaporator. The other liquid outlet of the evaporator is connected with a liquid inlet of the heating device, a temperature sensor is arranged between the other liquid outlet of the evaporator and the liquid inlet of the heating device, and the temperature sensor and the electric control valve are connected to a system control device. The electric control valve and the temperature sensor are arranged, and the aim of controlling the temperature with high precision is achieved under the condition that no additional heating device is added, and the heat load of a refrigerating system is changed.

Description

technical field [0001] The invention relates to the technical field of refrigeration equipment, in particular to a liquid cooling source unit with precise temperature control. [0002] Background technique [0003] High-precision equipment such as lasers have strict requirements on the temperature of the cooling liquid for cooling them, and cooling liquids of different temperatures will cause large changes in their working performance. With the increasing development of precision equipment such as lasers, the liquid cooling source for cooling down has higher and higher requirements for precise control of the liquid supply temperature, and the heat load of the heating equipment on the use side often changes in real time, so the liquid supply temperature is accurate Control is difficult. [0004] To ensure a relatively constant temperature on the use side, there are three main existing measures: [0005] One is that the refrigeration system is not adjusted, but heating equi...

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Problems solved by technology

[0010] Aiming at the deficiencies of the prior art, the present invention provides a liquid cooling source unit with precise temperature control, which effectively solves the problem of low control temperature accuracy in the case of thermal load changes in the refrigeration system, and can be used in a wide range of thermal loads (0-100 %) Under the condition of infinite change, it can still guarantee the refrigeration system with high temperature control accuracy

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