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Water chilling unit, water inlet pressure and water outlet pressure adjusting method thereof and air conditioning system

A water chiller and water pressure technology, which is applied in the direction of refrigerators, refrigeration components, heating and ventilation control systems, etc., can solve problems such as hysteresis and imbalance, and achieve the effect of avoiding potential safety hazards and ensuring water quantity

Active Publication Date: 2019-12-06
GREE ELECTRIC APPLIANCES INC
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems of hysteresis and unbalanced water pressure adjustment of the water inlet and outlet of the chiller in the prior art, the present invention proposes a water chiller, its water pressure adjustment method and air conditioning system

Method used

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  • Water chilling unit, water inlet pressure and water outlet pressure adjusting method thereof and air conditioning system
  • Water chilling unit, water inlet pressure and water outlet pressure adjusting method thereof and air conditioning system
  • Water chilling unit, water inlet pressure and water outlet pressure adjusting method thereof and air conditioning system

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Embodiment Construction

[0023] The principles and embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0024] The invention proposes a method for adjusting the inlet and outlet water pressures for chillers of multiple cooling towers. This method compares the water pressure of the inlet and outlet water of the chiller with the control water pressure, so that the water pressure of the chiller can be adjusted in real time, and the detected water pressure of the inlet and outlet of the chiller is fed back to the main control board of the chiller, through the control logic Realize the balance adjustment of the inlet and outlet water pressures to ensure the balance of the cooling outlet water volume; by extracting the inlet and outlet water pressures of multiple cooling towers and comparing the control water pressures, the inlet and outlet water pressure balance adjustments of multiple cooling towers are realized, avoiding the need for the u...

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Abstract

The invention discloses a water chilling unit, a water inlet pressure and water outlet pressure adjusting method thereof and an air conditioning system. The water inlet pressure and water outlet pressure adjusting method of the water chilling unit comprises the following steps of S1, detecting the water outlet amount of each cooling tower water pump in real time, comparing the water outlet amountwith the water outlet amount output by a main control board, and adjusting the water outlet amount of each cooling tower water pump according to the comparison result; and S2, comparing output signalssent by all cooling tower balancing modules, feeding back the comparison results to the main control board, enabling the main control board to adjust the water outlet amount of each cooling tower soas to realize the balance between the cooling towers. According to the method, the water inlet pressure and water outlet pressure balance adjustment of a plurality of cooling towers can be realized, and the potential safety hazard caused by abnormal water pressure during working of the unit is avoided.

Description

technical field [0001] The invention relates to the field of air-conditioning systems, in particular to a water chiller, a method for adjusting its inlet and outlet water pressures, and an air-conditioning system. Background technique [0002] The refrigeration unit in the air conditioning system realizes heat exchange through cold water and air cooling, and it plays an important role in the refrigeration system in the cooling mode of the condenser. Among them, chillers are widely used in air conditioning systems, including piston chillers, centrifugal chillers, screw chillers and modular chillers. Therefore, it is extremely important to detect the inlet and outlet water pressure of the cooling water pressure of the condenser, especially when the cooling towers are used in parallel, it is necessary to adjust the water inlet through the valve to achieve the balance of each outlet. Usually, the chiller will set pressure gauges and thermometers at the inlet valve and outlet va...

Claims

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Application Information

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IPC IPC(8): F25B49/00F24F11/88
CPCF25B49/00F24F11/88F24F11/89F24F11/49F24F2140/12F25B2700/19
Inventor 胡江沈丽凤钱沛周葆林
Owner GREE ELECTRIC APPLIANCES INC
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