Ventilation equipment and constant-air-volume motor control method and system thereof
A technology of ventilation equipment and control methods, applied in heating and ventilation control systems, control systems, motor control and other directions, can solve the problems of easy control abnormality, affecting the accuracy of air volume detection, and increasing costs, and achieve reliable and stable constant air volume control. , The effect of accurately adjusting motor parameters and reducing equipment costs
Active Publication Date: 2021-12-07
FOSHAN WEILING WASHER MOTOR MFG
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Problems solved by technology
[0004] The embodiment of this application provides a ventilation device and its constant air volume control method and system, which can solve the problem of increased cost caused by measuring air volume through sensors in the prior art, And once there is a failure, it will affect the accuracy of air volume detection, and it is easy to have abnormal control problems.
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[0040] In the following description, for purposes of illustration rather than limitation, specific system architecture is proposed, technical details such as the class of the application to provide a thorough understanding of the present embodiment. However, those skilled in the art will appreciate that, in other embodiments without these specific details may be implemented in the present application. In other instances, detailed description will be omitted of well-known systems, devices, circuits, and methods, to avoid obscure the description with unnecessary detail in the present application.
[0041] It should be appreciated that, when used in this specification and the appended claims, the term "comprising" indicates the presence of the described features, integers, steps, operations, elements and / or components, but do not preclude one or more other features, integers, steps, operations, elements, components and / or the presence or addition of collection.
[0042] It should...
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The invention is suitable for the technical field of motor control, and provides a constant air volume control method for ventilation equipment. The constant air volume control method comprises the following steps: the target air volume is obtained; the current rotating speed and the current torque of a motor of the ventilation equipment are detected; an air volume calculation formula corresponding to the target air volume is selected according to a preset corresponding relation between the air volume and the air volume calculation formula, and the current air volume corresponding to the current rotating speed and the current torque is calculated; and according to the difference between the current air volume and the target air volume, motor parameters of the ventilation equipment are adjusted. As a sensor for directly measuring the air volume is not needed in the control process, the equipment cost can be reduced. And moreover, the obtained current ventilation quantity is not influenced by the precision of the sensor, and the calculation precision of the target air volume is favorably improved through the air volume calculation formula corresponding to the target air volume, so that the motor parameters are more accurately adjusted, and more reliable and stable constant air quantity control on the ventilation equipment is realized.
Description
Technical field [0001] Technical Field The present application belongs to the control motor, and particularly to a method and a ventilation system. Background technique [0002] Ventilation and air conditioning equipment in the ventilation mode, with the increased use of time, the ventilation duct may accumulate dust or filter clogging occurs, resulting in the static pressure inside the ventilation duct changes. In addition, differences in the shape of pipe installation, also resulting in the variations of the static pressure ventilation duct. If the motor speed control with constant or constant torque control, not possible to effectively guarantee the ventilation duct a constant air volume output. [0003] In order to achieve a constant air volume control, the air volume by installing sensors or detectors manner static pressure sensor, based on the detected data to control air volume, to achieve constant air volume control. However, by way of the sensor mounting hardware increas...
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IPC IPC(8): F24F11/89F24F11/74F24F11/54F24F11/58F24F11/64F24F11/88H02P29/00
CPCF24F11/89F24F11/74F24F11/54F24F11/58F24F11/64F24F11/88H02P29/00F24F11/30F24F11/77F24F11/75Y02B30/70
Inventor 胡小林柯文静
Owner FOSHAN WEILING WASHER MOTOR MFG