Water-cooling water chilling unit and control method thereof
A technology of a chiller and a control method, applied in the control of water-cooled chillers and the field of water-cooled chillers, can solve the problems that the temperature of the frequency converter cannot be constant, the cooling of the frequency converter cannot be effectively controlled, and the heat dissipation efficiency is low.
Active Publication Date: 2013-06-05
GREE ELECTRIC APPLIANCES INC
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Problems solved by technology
[0002] In the prior art, the water-cooled chiller in the air-conditioning equipment is equipped with a frequency converter, and the heat dissipation method of the frequency converter generally adopts natural cooling or forced air cooling, and the heat dissipation efficiency is low
As a result, the temperature of the inverter will not be constant, and the device will be easily damaged by overheating, which will affect the stability of the inverter.
At the same time, there is no effective method in the prior art to effectively control the cooling of the frequency converter
Method used
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[0055] please see figure 1 , the invention discloses a water-cooled chiller, comprising a condenser 3, a cooling water pump 2, a cooling tower 1 and a frequency converter 6; the condenser 3, the cooling water pump 2 and the cooling tower 1 are connected through a circulation pipe 4, and the cooling water It flows in the circulation pipeline 4; the cooling water pump 2 is connected between the cooling tower 1 and the condenser 3; the condenser 3 includes a water inlet and a water outlet; wherein, the circulation pipeline 4 includes a frequency converter A cooling branch 8, the frequency converter cooling branch 8 branches from the water inlet end of the condenser and meets the water outlet end of the condenser, and the frequency converter 6 is connected to the frequency converter cooling branch.
[0056] The frequency converter 6 is connected in parallel with the condenser 3 .
[0057] The water-cooled chiller includes a self-operated temperature regulating valve 5 and a tempe...
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The invention provides a water-cooling water chilling unit and a control method thereof. Cooling water is utilized for cooling and heat dissipation for a frequency converter, temperature of a frequency converter radiator is relatively constant, parts are prevented from being damaged caused by overheating, radiator condensation is prevented from producing disadvantageous influence on the frequency converter, and work stability of the frequency converter is improved. A cooling water pump drives the cooling water to flow in a circulation mode in a circulation pipeline and drives the cooling water to flow in a cooling branch pipeline of the frequency converter, and the frequency converter is cooled by the cooling water flowing through the frequency converter. The frequency converter is provided with a temperature sensing part, a self-reliance type temperature regulating valve is arranged in the cooling branch pipeline of the frequency converter, the self-reliance type temperature regulating valve regulates aperture of the valve by comparing difference values of temperature signals and set temperature of the frequency converter, quantity of the cooling water flowing through the cooling branch pipeline of the frequency converter is further controlled, and temperature of the frequency converter achieves a constant value.
Description
technical field [0001] The invention belongs to the technical field of air conditioning unit control, and in particular relates to a control method of a water-cooled chiller and the water-cooled chiller. Background technique [0002] In the prior art, the water-cooled chiller in the air-conditioning equipment is equipped with a frequency converter, and the heat dissipation method of the frequency converter generally adopts natural cooling or forced air cooling, and the heat dissipation efficiency is low. As a result, the temperature of the inverter will not be constant, and the device is easily damaged by overheating, which will affect the stability of the inverter. At the same time, there is no effective method in the prior art to effectively control the cooling of the frequency converter. Contents of the invention [0003] The object of the present invention is to provide a control method of a water-cooled chiller and a water-cooled chiller, which use cooling water to c...
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IPC IPC(8): F24F11/02
Inventor 沈沉魏强赵海江滑玉辉鲁德苗
Owner GREE ELECTRIC APPLIANCES INC
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