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Wind speed frequency limiting control method and system for direct current variable frequency air conditioner indoor unit and air conditioner

An air-conditioning indoor unit and DC frequency conversion technology, applied in heating and ventilation control systems, space heating and ventilation control input, heating and ventilation safety systems, etc., can solve problems such as low production efficiency, affecting user comfort, and high cost , to improve user experience

Active Publication Date: 2016-09-07
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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Problems solved by technology

[0002] At present, there are various abnormal noises in the unitary inverter air conditioner when the indoor unit is running at low wind speed, which is very difficult to solve, such as the "silky" refrigerant noise caused by the rapid flow of the refrigerant in the indoor evaporator in the cooling mode and the compressor in the heating mode. The "humming" noise introduced into the indoor unit during frequency operation affects the comfort of users
At present, all kinds of mufflers are used to reduce this kind of noise, which cannot be completely solved, but it brings problems such as high cost and low production efficiency.

Method used

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  • Wind speed frequency limiting control method and system for direct current variable frequency air conditioner indoor unit and air conditioner
  • Wind speed frequency limiting control method and system for direct current variable frequency air conditioner indoor unit and air conditioner
  • Wind speed frequency limiting control method and system for direct current variable frequency air conditioner indoor unit and air conditioner

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Embodiment Construction

[0078] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0079] For the control flow chart of the method for controlling the wind speed and frequency limitation of the indoor unit of the DC inverter air conditioner of the present invention, see figure 1 , a method for controlling the frequency limit of wind speed of an indoor unit of a DC inverter air conditioner, the air conditioner includes a compressor for controlling the operating frequency of the compressor, comprising the following steps:

[0080] Step S1, according to the current operating mode of the air conditioner, the compressor is controlled to operate according to the frequency limiting protection scheme of the corresponding relationship between the preset wind speed of the indoor unit and the maximum operable frequency;

[0081] Step S2, controlling the compressor of the air conditioner to run for a preset time T according to the frequency limit...

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Abstract

The invention provides a wind speed frequency limiting control method for a direct current variable frequency air conditioner indoor unit. The wind speed frequency limiting control method comprises the step that according to the current operation mode of an air conditioner, a compressor is controlled to be operated on the basis of a frequency limiting protection scheme of the corresponding relation of the indoor unit preset wind speed and the maximum operational frequency. When the air conditioner is started, the maximum operational frequency, corresponding to the indoor unit preset wind speed, of the compressor is limited, so that the situation that the pressure of an air conditioner system is too high, the back pressure of the compressor is too high, and hiss noise and buzz noise occur in a room due to the fact that a user sets the preset wind speed of the indoor unit to be low, and the compressor of the air conditioner system operates at a high frequency is avoided, and the user experience is improved.

Description

technical field [0001] The invention relates to the technical field of air conditioner control, in particular to a method, system and air conditioner for controlling the wind speed of an indoor unit of a DC frequency conversion air conditioner. Background technique [0002] At present, there are various abnormal noises in the unitary inverter air conditioner when the indoor unit is running at low wind speed, which is very difficult to solve, such as the "silky" refrigerant noise caused by the rapid flow of the refrigerant in the indoor evaporator in the cooling mode and the compressor in the heating mode. The "humming" noise introduced into the indoor unit during high-frequency operation affects the comfort of users. At present, this type of noise is reduced by adding various mufflers, which cannot be completely solved, but it brings problems such as high cost and low production efficiency. Contents of the invention [0003] The invention provides a method, a system and a...

Claims

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Application Information

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IPC IPC(8): F24F11/00
CPCF24F11/30F24F11/62F24F11/64F24F11/65F24F11/77F24F2110/10Y02B30/70
Inventor 廖海防
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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