Control method and control device of water-cooled air cooler

Abstract

The invention provides a method and device for controlling a water cooling air cooler. The method for controlling the water cooling air cooler comprises the steps that the water inlet temperature of a condenser and the operation load of a compressor are obtained; according to the water inlet temperature of the condenser and the operation load of the compressor, data of the rotation speed of a motor are searched for from a preset database, wherein the preset database stores multiple groups of data of the water inlet temperatures of the condenser, the operation loads of the compressor and the rotation speeds of the motor, and the data of the rotation speed of the motor correspond to the data of the water inlet temperatures of the condenser and the data of the operation loads of the compressor; the motor is controlled to operate at the found rotation speed. According to the technical scheme, the work of the water cooling air cooler is reasonably controlled so that the energy efficiency of the water cooling air cooler can be improved, the phenomenon that water is blown by wind when the compressor works at a low operation load is avoided, and the noise of the water cooling air cooler can be easily controlled.

Description

technical field [0001] The present invention relates to the technical field of air coolers, and more specifically, to a control method and device for water-cooled air coolers. Background technique [0002] According to the international standard GB / T 17758-2010 "Unitized Air Conditioner", the definition of energy efficiency IPLV (Integrated Part Load Performance Coefficient) is as follows: [0003] IPLV=2.3%×A+41.5%×B+46.1%×C+10.1%×D; [0004] Among them, A is the EER (Energy Efficiency Ratio, the cooling performance coefficient of the air conditioner) when the operating load of the compressor is 100%; B is the EER when the operating load of the compressor is 75%; C is the operating load of the compressor. EER at 50%; D is the EER at 25% operating load of the compressor. [0005] From the above definition, it can be seen that B and C account for 87.6%, which are the key core parts of IPLV. That is, in the actual application process of the water-cooled air cooler, the comp...

AI Technical Summary

Problems solved by technology

However, the motor of the existing water-cooled air cooler is a motor with fixed frequency and non-adjustable speed, that is, the output air volume of the fan cannot be adjusted, so that when the compressor of the water-cooled air cooler is working at a low operating load, the output air volume of the fan is the same as that of the compressor at the operating load. The output air volume of the fans at 100% work is the same, resulting in a reduction in the energy efficiency of the air cooler and the phenomenon of wind blowing water

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