Double-loop water cooling unit and double-temperature cooling system

Abstract

The invention discloses a double-loop water cooling unit and a double-temperature cooling system which are used for equipment cold supplying. The double-loop water cooling unit and the double-temperature cooling system comprise a water tank and a compression refrigerating circular loop connecting a compressor, an evaporator, a condenser with a throttle valve through a pipeline. The water tank is divided into a main water tank body and an auxiliary water tank body. The evaporator is located in the main water tank body. A lower temperature water circulation supplying loop is connected outside the main water tank body. A high temperature water circulation supplying loop is connected outside the auxiliary water tank body. A temperature compensation pipeline leading to the auxiliary water tank body is connected on a water outlet pipeline of the lower temperature water circulation supplying loop. A temperature sensor is arranged in the auxiliary water tank body. A control valve in signal connection with the temperature sensor is arranged on the temperature compensation pipeline. The water tank is divided into the main water tank body and the auxiliary water tank body, the two circulation water loops are connected in the two water tank bodies correspondingly, the temperature sensor is arranged in the auxiliary water tank body, the control valve is controlled to be opened when the temperature of the auxiliary water tank body is excessively high, and low-temperature output water is input to the auxiliary water tank body through the temperature compensation pipeline to cool high-temperature circulation water.

Description

technical field [0001] The invention relates to the refrigeration field, in particular to a double-circuit chiller and a dual-temperature cooling system. Background technique [0002] The water-cooled chiller uses the principle of compression refrigeration to cool down the circulating water, and makes the output low-temperature circulating water work by exchanging heat with the air conditioning unit or the cold terminal. In some occasions, there are sometimes two user terminals, and it is necessary to provide two kinds of circulating water with different temperatures. The existing practice is to configure two sets of units to meet the needs, but this method requires high equipment costs; In the scheme disclosed by CN 201463385U, a proportional-integral three-way valve is set between the low-temperature circuit and the high-temperature circuit, so that the relatively low-temperature return water in the low-temperature circuit can directly enter the high-temperature circuit, b...

AI Technical Summary

Problems solved by technology

In some occasions, there are sometimes two user terminals, and it is necessary to provide two kinds of circulating water with different temperatures. The existing practice is to configure two sets of units to meet the needs, but this method requires high equipment costs; In the scheme disclosed by CN 201463385U, a proportional-integral three-way valve is set between the low-temperature circuit and the high-temperature circuit, so that the relatively low-temperature return water in the low-temperature circuit can directly enter the high-temperature circuit, but it is difficult to achieve more accurate temperature control in this way. The temperature required by high-temperature user terminals is not easy to be guaranteed

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