Constant-flow blower fan and control method thereof

A control method and constant flow technology, applied in pump control, mechanical equipment, machine/engine, etc., can solve the problems of reduced fan air volume, performance discount, inability to effectively control fan air volume, etc., to maintain stable air volume and use performance. improved effect

Active Publication Date: 2014-04-16
OPPEIN HOME GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Fans are used in a variety of environments. During use, the air duct is often blocked and the static pressure changes. Moreover, the manufacturer can only obtain the air volume generated under various simulated conditions in the laboratory, and cannot grasp the final use. when the effect
[0003] Tr

Method used

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  • Constant-flow blower fan and control method thereof
  • Constant-flow blower fan and control method thereof
  • Constant-flow blower fan and control method thereof

Examples

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Embodiment Construction

[0029] Embodiments of the present invention are described in detail below in conjunction with accompanying drawings:

[0030] Such as figure 1 , 2 As shown, in an embodiment of the present invention, a control method of a constant flow fan includes the following steps:

[0031] S100, when the speed of the fan 200 is n, when the output current value of the variable frequency driver 300 is less than the set value, then increase the output current of the variable frequency driver 300; when the output current value of the variable frequency driver 300 is greater than the set value, then reduce the variable frequency The output current of the driver 300.

[0032] The operating current and voltage of the fan 200 is controlled by controlling the output current of the variable frequency drive 300, thereby controlling the speed of the fan 200. After the speed of the fan 200 changes, the corresponding air volume will also change accordingly, so that the air volume generated by the fan...

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Abstract

The invention discloses a constant-flow blower fan and a control method thereof. The control method of the constant-flow blower fan comprises the steps that S100, when the rotating speed of the constant-flow blower fan is n and the value of an output current of a variable-frequency driver is less than a set value, the output current of the variable-frequency driver is increased; when the value of the output current of the variable-frequency driver is greater than the set value, the output current of the variable-frequency driver is decreased. The working current and voltage of the blower fan are controlled by controlling the output current of the variable-frequency driver, and therefore the rotating speed of the blower fan is controlled; after the rotating speed of the blower fan is changed, the corresponding air quantity will be changed, and therefore the air quantity of the blower fan is kept in a reasonable range, and using performance of the blower fan is improved.

Description

technical field [0001] The invention relates to the technical field of centrifugal fan control, in particular to a constant flow fan and a control method thereof. Background technique [0002] Fans are used in a variety of environments. During use, the air duct is often blocked and the static pressure changes. Moreover, the manufacturer can only obtain the air volume generated under various simulated conditions in the laboratory, and cannot grasp the final use. time effect. [0003] Traditional fans are generally constant speed or constant torque fans. When the fan is abnormal, the air volume of the fan cannot be effectively controlled. When the air duct is blocked, the air volume of the fan will decrease sharply, the suction will decrease, and the performance will be greatly reduced. Contents of the invention [0004] The object of the present invention is to provide a control method of a constant flow fan capable of keeping the air volume generated by the fan within a r...

Claims

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Application Information

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IPC IPC(8): F04D27/00F04D25/08
Inventor 杨辉黄孝畯徐云生杨武
Owner OPPEIN HOME GRP
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