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Domestic multi-connection air conditioner low temperature heating outdoor unit frequency control method

A control method and frequency technology, which is applied in the field of frequency control of external units of household multi-connected air conditioners during low-temperature heating, and can solve problems such as the inability of the compressor to improve the working capacity, the poor heating effect of the internal mechanism, and the unsatisfactory heating effect of the internal mechanism, etc. , to achieve the effect of optimizing the heating effect of the internal mechanism and improving the working ability

Inactive Publication Date: 2006-10-25
HAIER GRP CORP +1
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Problems solved by technology

Under the same system structure state, if the maximum operating frequency is set low, when the outdoor temperature is relatively low, the compressor will not be able to improve the working capacity due to frequency limitation, resulting in poor heating effect of the indoor unit
If the maximum operating frequency is set high, the current may be too high during cooling operation at high temperature, causing damage to the compressor
In addition, there is no factor controlling the heating effect of the internal mechanism in the frequency control, which causes the heating effect of the internal mechanism to be unsatisfactory when the indoor temperature is relatively low

Method used

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  • Domestic multi-connection air conditioner low temperature heating outdoor unit frequency control method
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  • Domestic multi-connection air conditioner low temperature heating outdoor unit frequency control method

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Embodiment Construction

[0038] The realization process of the present invention is as figure 1 As shown, and the system structure is set as one external machine to drive three internal machines to work, the present invention is realized through the following steps:

[0039] 1) After the user controls the start-up of the air-conditioning system, the main controller judges the operation mode after start-up, and whether the current operation mode is set as the heating operation mode;

[0040] 2) If the current operation mode is the heating operation mode, the air conditioning system starts to enter the heating start process;

[0041] 3) The system controls the compressor in the outdoor unit to be ready for work, and at the same time, controls the temperature sensor fixed on the air inlet side of the condenser of the outdoor unit to detect the outdoor temperature T out ;

[0042] 4) When the indoor unit is running, the difference between the set temperature of each indoor unit and the indoor ambient te...

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Abstract

The invention offers an outer machine frequency control method used in air conditioning low temperature heat production. It separates refrigeration highest running frequency from heat production. The highest running frequency of compressor heat production is gained by calculating outer machine temperature and inner machine total power. It also adds heat production effect factor to optimize by controlling frequency.

Description

technical field [0001] The invention relates to a method for controlling the frequency of an outdoor unit during low-temperature heating of an air conditioner, in particular to a method for controlling the frequency of an outdoor unit during low-temperature heating of a household multi-connected air conditioner. Background technique [0002] A multi-connected air conditioner is a type of central air conditioner, which refers to an air conditioner in which one or several external units are connected to multiple internal units of the same model or different models to achieve air conditioning in different spaces. A small central air conditioner operated by an internal unit. [0003] At present, the heating method adopted by most air conditioners is essentially the same as that of refrigerators, except that the direction of working medium circulation is different (low temperature refrigeration). The working principle of its heating is: in the heat pump, the refrigerant absorbs ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00
Inventor 张晓兰刘志胜毛守博卢大海王莉
Owner HAIER GRP CORP
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