Control method of frequency limiting and reducing of compressor and inverter air conditioner

A control method and compressor frequency technology, which is applied to the control input related to air characteristics, heating and ventilation control system, space heating and ventilation control input, etc., can solve the control disorder of the drive board, violent fluctuation of indoor temperature, compressor Built-in protection against damage and other issues to achieve a good experience, ensure indoor temperature, and avoid electrical safety accidents

Inactive Publication Date: 2019-01-08
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. If the current limit and frequency reduction are not timely, the built-in protection of the compressor will be damaged;
[0005] 2. Temperature limit and untimely frequency reduction will lead to control disorder of the drive board, damage to the drive board and even electrical safety accidents;
[0006] 3. The frequency limit and frequency red

Method used

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  • Control method of frequency limiting and reducing of compressor and inverter air conditioner
  • Control method of frequency limiting and reducing of compressor and inverter air conditioner
  • Control method of frequency limiting and reducing of compressor and inverter air conditioner

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Embodiment Construction

[0029] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0030] Compressor frequency control is generally jointly controlled by the main board and the driver board. The present invention controls the driving board. Under normal circumstances, the operating frequency of the compressor is close to the target frequency, and the final steady state compressor operating frequency is consistent with the target frequency. In special cases, for example, when the temperature of the drive board is too high and the compressor current is too large, the drive board will limit and reduce the frequency of the compressor for reliable and continuous operation of the unit. At this time, the target frequency of the compressor will be inconsistent with the actual frequency. Or even run in the opposite direction.

[0031] This application is used for the inverter air conditioner with the compressor on the outdoor side.

[003...

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Abstract

The invention discloses a control method of frequency limiting and reducing of a compressor and an air conditioner using the method. The control method of frequency limiting and reducing comprises thesteps of detecting running parameters of the compressor, judging the interval range of the running parameters, and according to the judgment result, carrying out frequency limiting and reducing control over the compressor. Through monitoring of the current of the compressor and the temperature of a drive board, the running frequency of the compressor is controlled, elements of the compressor, thedrive board and the like can run within the normal range, happening of electric appliance safety accidents can be avoided, meanwhile, a unit can continuously run, frequent shutdown is not needed, andindoor temperature stability is ensured.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a control method for limiting and reducing frequency of a compressor and an inverter air conditioner using the method. Background technique [0002] Compressor frequency limitation and frequency reduction are protection measures implemented to protect the reliable operation of the air conditioning system or the components of the unit from being damaged. There are two types of compressor limit and frequency reduction: main control limit and frequency reduction and driving limit and frequency reduction. The main control limit and frequency reduction refer to the frequency limit and reduction of the compressor controlled by the motherboard. The parameters involved in the control are generally the discharge temperature, discharge pressure or suction pressure. The drive limit and frequency reduction refers to the frequency limit and reduction of the compressor controlled by ...

Claims

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Application Information

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IPC IPC(8): F24F11/89F24F11/00F25B49/02F24F110/10
CPCF24F11/00F25B49/022F24F11/89F24F2110/10
Inventor 周志宾戴永福陈博强冯志文江标
Owner GREE ELECTRIC APPLIANCES INC
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