Rotating speed control method, rotating speed control system and air conditioner

A speed control and speed technology, applied in heating and ventilation control systems, heating and ventilation safety systems, heating methods, etc., can solve problems such as shortened fan life, unbalanced power, and high fan power

Active Publication Date: 2017-10-20
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

Usually, DC fans for air conditioners use the speed control mode to control the operation of the motor. The controller sends a speed command to the motor, collects the feedback signal from the motor, adjusts the speed command according to the speed of the feedback signal, and finally reaches the target speed. There is no problem with the control method in most cases, but in some cases, such as when two fans are required to run at high load at the same time, although the speed commands are the same, the two fans will still have a larger fan power. The power of the other one is relatively small (the two fans are fans of the same specification), resulting in an unbalanced power between the two fans, resulting in a serious consequence of shortening the life of the fans

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  • Rotating speed control method, rotating speed control system and air conditioner
  • Rotating speed control method, rotating speed control system and air conditioner
  • Rotating speed control method, rotating speed control system and air conditioner

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Embodiment Construction

[0060] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0061] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

[0062] figure 1 A schematic flow chart of a rotational speed control method according to an embodiment of the present invention is shown.

[0063] like figure 1 As shown, a speed control method fo...

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Abstract

The invention provides a rotating speed control method, a rotating speed control system and an air conditioner. The rotating speed control method comprises the following steps: detecting a first rotating speed and a first current of a first fan in the air conditioner during working; detecting a second rotating speed and a second current of a second fan in the air conditioner during working; determining a current difference between the first current and the second current, and judging the relation between the current difference and a preset current difference; and adjusting the first rotating speed or the second rotating speed according to the judgment result. By the technical scheme, when the power is imbalanced when the first fan and the second fan work, one of the fans is adjusted to achieve the state of balanced running power of the two fans, and therefore, the service lives of the fans are prolonged.

Description

technical field [0001] The present invention relates to the field of air conditioners, in particular to a speed control method, a speed control system and an air conditioner. Background technique [0002] At present, with the rapid development of the social market economy and the continuous improvement of the level of science and technology, the use of air conditioners is becoming more and more common. In the hot summer, the requirements for air conditioning and ventilation have also increased. The higher it is, the new test is put forward for the design of the dual-fan air conditioner. Usually, DC fans for air conditioners use the speed control mode to control the operation of the motor. The controller sends a speed command to the motor, collects the feedback signal from the motor, adjusts the speed command according to the speed of the feedback signal, and finally reaches the target speed. There is no problem with the control method in most cases, but in some cases, such ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/00F24F11/02
CPCY02B30/70
Inventor 李松刘军凡新建
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD
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