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Water chilling unit and water temperature control method thereof

A water temperature control method and chiller technology, which is applied in the direction of refrigerators, refrigeration components, manufacturing tools, etc., can solve the problem that the frequency conversion chiller cannot control the water temperature stably, and achieve the effect of small turbulence

Inactive Publication Date: 2019-04-02
GREE ELECTRIC APPLIANCES INC
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  • Abstract
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Problems solved by technology

[0004] In order to solve the technical problem that the water temperature of the variable frequency chiller cannot be stably controlled in the prior art, the present invention proposes a water temperature control method of the chiller, which includes the steps of:

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  • Water chilling unit and water temperature control method thereof

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Embodiment Construction

[0017] The principles and optimal embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0018] figure 1 The water temperature control method of the chiller unit of the present invention is given. After the compressor is turned on, the control precision to be controlled is set, and then the water temperature of the chiller unit is detected. In one embodiment, the actual water inlet temperature of the chiller can be detected by the temperature sensing package, and then the load deviation can be calculated according to the detected actual water inlet temperature. In another embodiment, the actual outlet water temperature and the actual inlet water temperature of the chiller can be detected by the temperature sensing package, and then the load deviation is calculated according to the actual outlet water temperature and the actual inlet water temperature.

[0019] The load deviation is calculated according to the su...

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Abstract

The invention discloses a water chilling unit and a water temperature control method thereof. The water temperature control method of the water chilling unit comprises the steps that control precisionis set; water temperature of the water chilling unit is detected; load deviation is calculated according to the water temperature; the relationship between the load deviation and the control precision is judged; and the frequency of a compressor of the water chilling unit is adjusted or maintained. According to the water chilling unit, stable frequency modulation of the water chilling unit can becarried out according to the water temperature, and stable water supply temperature is realized.

Description

technical field [0001] The invention relates to a water chiller and a method for automatically adjusting frequency to keep water temperature stable. Background technique [0002] High-end CNC machine tools are one of the key breakthrough development areas. At present, the output of domestic CNC machine tool industry is very large, which makes the supporting cooling machines develop rapidly. The cooling machine continuously provides cold water or cold oil to the machine tool through the air-cooled chiller unit to cool down the temperature of key components such as the spindle, so as to take away the huge heat generated by the machine tool and protect the machine tool. The machine tool is a very precise device, and the temperature that each key component can withstand also needs to be controlled. Therefore, the cooling capacity provided by the unit needs to be changed according to the temperature of the outlet water (inlet water) of the unit, rather than continuous and stable ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B49/02B23Q11/12
Inventor 卓明胜董扣陈培生刘洋张丹丹
Owner GREE ELECTRIC APPLIANCES INC
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