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Control method for constant air volume of air conditioning system

An air-conditioning system and control method technology, which is applied in the direction of high-efficiency regulation technology, climate sustainability, mechanical equipment, etc., and can solve problems such as dirty filter screens and reduced air volume of air-conditioning systems

Inactive Publication Date: 2020-04-24
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to provide a method for controlling the constant air volume of the air-conditioning system to solve the problem in the prior art that the air volume of the air-conditioning system is reduced due to dirty and clogged filters

Method used

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  • Control method for constant air volume of air conditioning system
  • Control method for constant air volume of air conditioning system

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Embodiment 1

[0025] Such as figure 1 As shown, the constant air volume control method of the air conditioning system is suitable for the air conditioning system with a filter installed at the exhaust outlet. The constant air volume control method of the air conditioning system includes:

[0026] Detect the operating parameters of the fans of the air conditioning system;

[0027] Obtain the power P of the fan according to the operating parameters;

[0028] The drag coefficient Kp is obtained according to the power P, and the speed n of the fan is adjusted through the drag coefficient Kp, so that the air volume blown from the fan is always the preset air volume Q. Wherein, the operating parameters include current value and voltage value.

[0029] Applying the technical solution of this embodiment, the user first sets the fan of the air-conditioning system to run at a preset speed, and then makes the fan blow out a preset air volume. Afterwards, the operating parameters of the fans of the ...

Embodiment 2

[0052] The difference between the method for controlling the constant air volume of the air-conditioning system in the second embodiment and the first embodiment lies in the way of adjusting the speed n of the fan.

[0053] Such as figure 2 As shown, the wind resistance coefficient change ΔKp of the wind resistance coefficient Kp within the preset time is obtained according to the power change ΔP of the power P within the preset time, so as to adjust the speed n of the fan through the wind resistance coefficient change ΔKp. Specifically, the user first sets the fan of the air-conditioning system to run at a preset speed, and then makes the fan blow out a preset air volume. Afterwards, the operating parameters of the fans of the air conditioning system are detected, and then the power P of the fans is obtained according to the operating parameters. Then, according to the power variation ΔP of the power P within the preset time, the drag coefficient variation ΔKp of the drag c...

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Abstract

The invention provides a control method for a constant air volume of an air conditioning system. The control method is suitable for an air conditioning system with a filter screen arranged at an air outlet and comprises the following steps: detecting the operating parameters of a draught fan of the air conditioning system; acquiring the power P of the fan according to the operation parameters; acquiring a wind resistance coefficient Kp according to the power P so as adjust the rotating speed n of the fan through the wind resistance coefficient Kp; or acquiring the wind resistance coefficient variation delta(Kp) of the wind resistance coefficient Kp within preset time according to power variation delta(P) of the power P within the preset time so as to adjust the rotating speed n of the fanthrough the wind resistance coefficient variation delta(Kp) and allow air volume blown out of the fan to be a preset air volume Q all the time, wherein the operating parameters comprise a current value and / or a voltage value. The control method overcomes the problem that the air outlet amount of an air conditioning system is reduced due to filth blockage of a filter screen in the prior art.

Description

technical field [0001] The invention relates to the technical field of air-conditioning systems, in particular to a method for controlling constant air volume of an air-conditioning system. Background technique [0002] At present, air-conditioning indoor units are equipped with filter screens at the air exhaust outlets. Dust is filtered and deposited on the filter screens. Users need to clean them regularly, otherwise bacteria will easily breed and cause secondary pollution. At the same time, dust affects the air supply volume and air supply distance of the air conditioner indoor unit, resulting in a decrease in the air supply volume of the air conditioner indoor unit, thereby affecting the working efficiency and user experience of the air conditioner indoor unit. Contents of the invention [0003] The main purpose of the present invention is to provide a method for controlling the constant air volume of an air-conditioning system to solve the problem in the prior art tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/75F24F11/77F24F11/64F24F11/61F24F11/89
CPCF24F11/61F24F11/64F24F11/75F24F11/77F24F11/89Y02B30/70
Inventor 董明珠梁博陶梦春林金煌张杰添姜学想曾庆和
Owner GREE ELECTRIC APPLIANCES INC
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