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Method for adaptive adjustment of real-time maximum allowable rotating speed of fan motor

An adaptive adjustment, maximum allowable technology, applied in mechanical equipment, machine/engine, pump control and other directions, can solve the problems of air conditioner damage, poor use effect, unstable operation of air conditioner, etc., to avoid shutdown and deceleration operation. , Good use effect, guaranteed operation effect

Active Publication Date: 2014-03-26
HITACHI JOHNSON CONTROLS AIR CONDITIONING INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when the fan motor is under frequent overload protection and recovery, the heat exchange capacity of the heat exchanger also fluctuates, resulting in unstable operation of the air conditioner, poor use effect, and may even cause damage to the air conditioner

Method used

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  • Method for adaptive adjustment of real-time maximum allowable rotating speed of fan motor

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Embodiment Construction

[0022] In the following description, numerous specific details are given in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without one or more of these details. In other examples, some technical features known in the art are not described in order to avoid confusion with the present invention.

[0023] In order to provide a thorough understanding of the present invention, the detailed structure will be set forth in the following description. It is evident that the practice of the invention is not limited to specific details familiar to those skilled in the art. Preferred embodiments of the present invention are described in detail below, however, the present invention may have other embodiments besides these detailed descriptions.

[0024] The invention discloses an adaptive adjustment method for the real-time maximum allowable rotational speed of a f...

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Abstract

The invention discloses a method for adaptive adjustment of the real-time maximum allowable rotating speed of a fan motor. The method comprises the steps of setting the initial real-time maximum allowable rotating speed of the fan motor to be equal to the upper limit rotating speed of the fan motor, and setting standard operating time at the same time; controlling the fan motor to rotate at a commanded rotating speed and counting the actual operating time of the fan motor, wherein the commanded speed is lower than or equal to the initial real-time maximum allowable rotating speed; detecting the actual rotating speed state of the fan motor, judging whether the fan motor operates in an overload state and generating an overload judging result according to the actual rotating speed state; adjusting the real-time maximum allowable rotating speed according to the overload judging result. According to the method for adaptive adjustment of the real-time maximum allowable rotating speed of the fan motor, frequent shut-down and speed-down operation of the fan motor caused by overload protection are effectively avoided, continuous and stable operation of an air conditioner is guaranteed to the maximum extent, and a stable and good using effect of the air conditioner is ensured.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to an adaptive adjustment method for the real-time maximum allowable rotational speed of a fan motor. Background technique [0002] The fan motor in the outdoor unit of the air conditioner is mainly used to drive the fan to rotate, so as to provide the required air volume for the heat exchanger of the outdoor unit of the air conditioner, so that the energy of the heat exchanger can be dissipated in time to ensure that the heat exchanger has a stable and reliable heat exchange ability. When the heat exchange demand of the heat exchanger is large, the fan motor needs to operate at a relatively high speed to ensure the heat exchange demand of the heat exchanger. In this way, after running for a period of time, the temperature of the coil inside the fan motor and power components such as the drive circuit will gradually increase. When the temperature rises to a certain level, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D27/00
Inventor 季秀成顾中华徐竑晨宋晓
Owner HITACHI JOHNSON CONTROLS AIR CONDITIONING INC
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