Chilled water constant-temperature device and method for controlling same

Abstract

The invention discloses a chilled water constant-temperature device and a method for controlling the same. The chilled water constant-temperature device comprises a four-pipe concentrated cold source(1) and a constant-temperature module (3). The constant-temperature module (3) comprises a first heat exchanger (51) and a second heat exchanger (52); a first cooling liquid heat exchange pipe of thefirst heat exchanger (51), a second cooling liquid heat exchange pipe of the second heat exchanger (2) and a cooling liquid pipeline of heat source equipment (2) are serially connected with one another to form a cooling liquid heat dissipation circuit of the heat source equipment (2), and the cooling liquid heat dissipation circuit is used for reducing the temperature of cooling liquid of the heatsource equipment (2) in a classified manner by the aid of cold sources provided by the four-pipe concentrated cold source (1), so that the current temperature of the cooling liquid of the heat sourceequipment (2) can reach set temperatures. According to the scheme, the chilled water constant-temperature device and the method have the advantages that the problem of complicated control proceduresof control modes for implementing precision heating capacity output on auxiliary electric heating by the aid of silicon controlled rectifiers can be solved by the aid of the chilled water constant-temperature device and the method, and effects of simplifying control procedures can be realized.

Description

technical field [0001] The invention belongs to the technical field of cooling and cooling, and in particular relates to a constant temperature device for chilled water and a control method thereof, in particular to a constant temperature device for dual-temperature chilled water variable flow control and a control method thereof. Background technique [0002] In some special applications, such as the constant temperature cooling of the spindle of precision machine tools and the heat preservation of the machine body, the temperature control accuracy is required to be relatively high. The purpose is to ensure that the motor spindle will not be elongated or shortened due to thermal expansion and contraction. The expansion and contraction deformation in the machine will cause the processing error to deviate from the set value, and the purpose of the body's heat preservation is also the same. [0003] Today's machinery manufacturing is becoming more and more complex, with powerf...

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Problems solved by technology

[0007] The purpose of the present invention is to address the above defects, to provide a chilled water constant temperature device and its control method, to solve the problem of complex control process in the prior art of implementing precise heating capacity output control methods for auxiliary electric heating through silicon controlled rectifiers problems, to achieve the effect of simplifying the control process

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