Control method of inverter air conditioner

Abstract

The invention belongs to the technical field of air conditioners, and in particular relates to a control method of an inverter air conditioner. The invention aims to solve the problem that the existing air-conditioning system with waste heat recovery function has poor energy-saving effect. For this purpose, the control method of the frequency conversion air conditioner of the present invention can determine the frequency mode of the frequency conversion pump according to different branch operation conditions, so that the basic operation requirements and hot water heating of the air conditioner of the present invention can be met through the frequency conversion operation of the frequency conversion pump Improve the energy-saving effect of the air conditioner on the basis of meeting the demand and realizing waste heat recovery. Furthermore, the control method of the present invention can also determine whether the variable frequency pump needs to be reduced in frequency according to the current frequency mode of the variable frequency pump and the opening degree of the electronic expansion valve, and in the case that the variable frequency pump needs to be reduced in frequency, for the variable frequency pump Different frequency modes implement corresponding frequency reduction schemes, so as to optimize and improve the energy-saving effect of the air conditioner again.

Description

technical field [0001] The invention belongs to the technical field of air conditioners, and in particular relates to a control method of an inverter air conditioner. Background technique [0002] Due to the hot weather in summer, people's water consumption will increase correspondingly, and the city's water and electricity supply will increase. Since the temperature requirement of water in summer is not very high, in the era of energy shortage, if the waste heat generated by air conditioning is used for heating Domestic water can meet people's daily needs, which can not only avoid the consumption of gas and other energy sources by hot water, but also make a certain contribution to improving the global warming effect. [0003] An air conditioning system is now provided. Compared with the existing air conditioner, the air conditioning system includes a circulating water exchange circuit capable of absorbing the waste heat of the air conditioner and heating hot water, and a n...

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Problems solved by technology

[0004] In order to solve the above-mentioned problems in the prior art, that is, to solve the problem that the energy-saving effect of the air-conditioning system with waste heat recovery function is not good, the present invention provides a control method for an inverter air conditioner, the inverter air conditioner includes a compressor , an electronic expansion valve, an evaporator, a condenser, and a water exchange circuit, the compressor, the electronic expansion valve, the evaporator, and the condenser form a closed-loop refrigerant circulation system, and the water exchange circuit includes a first The heat exchange branch, the second heat exchange branch, the frequency conversion pump and the valve assembly, the water storage device is arranged on the first heat exchange branch, the water supply device and the drainage device are arranged on the second heat exchange branch, and the Any one of the first heat exchange branch and the heat exchange branch can be communicated with the frequency conversion pump, and the condenser flows through the first heat exchange branch or the second heat exchange branch The water heat dissipation, the valve assembly can switch the water exchange circuit between the first heat exchange branch and the second heat exchange branch, and the variable frequency pump controls the first heat exchange branch or For the flow state of water in the second heat exchange branch, the control method includes: obtaining the frequency mode of the frequency conversion pump; obtaining the change of the opening degree of the electronic expansion valve; according to the frequency mode of the frequency conversion pump and the opening degree change of the electronic expansion valve, so that the variable frequency pump selectively operates in a corresponding reduced frequency mode

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