Method for controlling supply frequency of variable frequency compressor

A frequency conversion compressor and power supply frequency technology, applied in pump control, liquid variable capacity machinery, heating and ventilation control systems, etc., can solve problems such as compressor failure

Active Publication Date: 2010-03-10
HAIER GRP CORP +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Therefore, the difference between the indoor ambient temperature and the set target temperature of each indoor unit is different. If an inverter compressor is used, the control circuit o

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  • Method for controlling supply frequency of variable frequency compressor

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Embodiment 1

[0047] as attached figure 1 As shown, the process of controlling the power supply frequency of the variable frequency compressor by the control unit in the present invention is as follows: first, connect the input terminal of a type of compressor and the signal output terminals of several indoor units to the control unit, After the air conditioning system is turned on, the control unit starts to detect the signals of each signal output port. Through the detection, it can be concluded that several indoor units are in the on state, the models of the indoor units that have been turned on (corresponding to the power data of the indoor units), and the indoor units that have been turned on. The ambient temperature and set temperature of each indoor unit in the machine, the wind speed data set by each indoor unit among the indoor units that have been turned on, and the operating mode set by each indoor unit among the indoor units that have been turned on. Find out the type of a compr...

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Abstract

The invention relates to an air conditioner, in particular to a method for controlling the supply frequency of a variable frequency compressor, which comprises the following steps that: in a control unit of the air conditioner, indoor unit data and compressor data of a plurality of air conditioners are stored and limited frequency data of the compressor in different temperature environments are stored; signal output terminals of an outdoor unit and a plurality of indoor units of the air conditioner are connected with the control unit; after the air conditioner is turned on, the control unit identifies a compressor signal and an indoor unit signal, receives an indoor environment temperature signal, sets a temperature signal, and receives a fixed wind speed signal; the control unit judges whether an output target frequency is greater than a limited frequency or not according to the identified signal; if the target frequency is greater than the limited frequency of the compressor, the compressor operates according to the limited frequency; and if the target frequency is smaller than the limited frequency of the compressor,, the control unit outputs a control signal to the compressor to operate according to the target frequency. The method can make a compressor in a one-to-multi air-conditioning system adopt the variable frequency compressor.

Description

technical field [0001] The invention relates to an air conditioner, in particular to a method for controlling the power supply frequency of an inverter compressor. Background technique [0002] With the enhancement of people's awareness of energy saving, air conditioners using inverter compressors have gradually entered thousands of households. The inverter compressor achieves energy saving by adjusting the power supply frequency of the compressor, and can achieve a comfortable room temperature. In the existing inverter air conditioner, the adjustment of the power supply frequency of the compressor is mainly to set an indoor target temperature through the remote control, the sensor in the indoor unit detects an indoor ambient temperature, and the control circuit controls the temperature based on the temperature difference signal between the above two temperatures. The power supply frequency of the variable frequency compressor, when the temperature difference is large, the ...

Claims

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Application Information

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IPC IPC(8): F24F11/00F24F11/053F04B49/06F24F11/76
CPCY02B30/746
Inventor 张守信耿宝寒吴丽琴
Owner HAIER GRP CORP
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