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Draught fan control method and device and air conditioner

A fan and air volume technology, applied in mechanical equipment, high-efficiency regulation technology, climate sustainability, etc., can solve the problems of poor accuracy and low efficiency of fan constant air volume control, improve accuracy and efficiency, and avoid difficult calculation of resistance Effect

Inactive Publication Date: 2019-03-08
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the embodiment of the present invention provides a fan control method, device and air conditioner, aiming to solve the problems of poor accuracy and low efficiency of fan constant air volume control in the traditional technology

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  • Draught fan control method and device and air conditioner
  • Draught fan control method and device and air conditioner
  • Draught fan control method and device and air conditioner

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Embodiment Construction

[0027] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0028] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.

[0029] figure 1 A schematic diagram showing the relationship between the fans of the air conditioning system and the parameters of the pipe network. When the fan is working, even if the speed is the same, the air supply volume may be different. The pressure loss in th...

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Abstract

The invention belongs to the technical field of air conditioners, and provides a draught fan control method and device and an air conditioner. The draught fan control method comprises the steps that firstly, initial rotating speed is obtained according to preset air quality to enable a draught fan to operate at the initial rotating speed; then, a preset electrical parameter is obtained according to the preset air quality and the initial rotating speed; an actual electrical parameter of the draught fan is detected in real time; and when a difference value of the preset electrical parameter andthe actual electrical parameter is not in a preset numerical value interval, the rotating speed of the draught fan is adjusted step by step, and difficult calculation of resistance, limited dial-up gear, human factor interference and environmental factor interference caused by air output volume of a dial-up adjusting draught fan are avoided and the accuracy and efficiency of constant air volume control of the draught fan are improved due to the fact that the purpose of detecting actual air volume through the actual electrical parameter of a detecting draught fan is achieved by using a relationship of the electrical parameter and the air volume of the draught fan, and the air output air volume of the draught fan is enabled to reach the preset air volume by adjusting the rotating speed of the draught fan.

Description

technical field [0001] The invention belongs to the technical field of air conditioners, and in particular relates to a fan control method and device and an air conditioner. Background technique [0002] In the air conditioning system, the indoor unit bears the indoor cooling / heating load by sending cold or hot air into the room. Therefore, the air supply volume of the indoor unit needs to be stable at the design air volume to achieve a good cooling or heating effect. The air conditioner indoor unit provides a certain air pressure and air volume through the fan, so the key to ensure the stable air supply volume of the indoor unit is the constant air volume control of the fan. [0003] The rated air volume of the fan is the air volume measured at the rated static pressure. In the actual installation and use of the fan of the indoor unit of the air conditioner, the back pressure of the air outlet changes, the length of the air pipe connected to the air duct machine is differen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/64F24F11/77
CPCF24F11/64F24F11/77Y02B30/70
Inventor 王威吴孔祥许永锋李宏伟薛晓王茹翰
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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