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Air volume adjusting device and air volume adjusting method of alternating current fan and air draft equipment

An air volume adjustment and fan technology, which is applied to mechanical equipment, components of pumping devices for elastic fluids, machines/engines, etc., and can solve the problems of different noise values, high noise reduction cost of AC fans, and different noise acceptance levels. , to achieve the effect of low noise reduction cost and reliable noise reduction method

Pending Publication Date: 2022-04-12
HANGZHOU ROBAM APPLIANCES CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the AC fan usually has only one resonance point, and the resonance point and the noise value generated in different installation environments are different, and different users have different acceptance levels for noise.
Therefore, the method of pre-calibrating the noise threshold cannot adapt to different installation environments, and does not consider the acceptance of noise by different users, and cannot achieve customized effects for each user.
In addition, both of the above two noise reduction methods require the installation of components such as sound collection devices to detect noise, which makes the noise reduction cost of the AC fan in the ventilation equipment high, inconvenient to install, and prone to misjudgment caused by external noise interference

Method used

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  • Air volume adjusting device and air volume adjusting method of alternating current fan and air draft equipment
  • Air volume adjusting device and air volume adjusting method of alternating current fan and air draft equipment
  • Air volume adjusting device and air volume adjusting method of alternating current fan and air draft equipment

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Embodiment Construction

[0045] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only It is a part of the embodiments of this application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments of the present application, every other embodiment obtained by those skilled in the art withou...

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Abstract

The invention provides an air volume adjusting device and method of an alternating current fan and air draft equipment. The air volume adjusting device comprises a first controller, a fan driving circuit and a capacitor switching circuit. The first controller is connected to the capacitance switching circuit, and the capacitance switching circuit is connected to the alternating current fan; the first controller is connected to the fan driving circuit, and the alternating current fan is connected to the fan driving circuit; and the fan driving circuit, the capacitance switching circuit, the alternating current fan and the first controller are respectively connected to the power supply circuit. Therefore, by arranging the first-stage air volume gear and the refined second-stage air volume gear under the first-stage air volume gear, refined adjustment of the air volume can be achieved, and the personalized adjustment requirements of different users are fully met; noise generated by the range hood is changed by adjusting the air volume, resonance points do not need to be calibrated in advance, redundant assemblies do not need to be installed, the range hood is suitable for differences of different installation environments, the noise reduction cost is low, and the noise reduction mode is reliable.

Description

technical field [0001] The present application relates to the technical field of ventilation equipment, in particular to an air volume adjustment device for an AC fan, a method for adjusting the air volume, and the ventilation equipment. Background technique [0002] At present, the ventilation equipment provides convenience for users in various aspects based on its own ventilation function. For example, the range hood can reduce the oil fume generated during the cooking process, and the ventilation fan can discharge the odor gas in the room; when the existing ventilation equipment is running The greater the air volume, the greater the noise, which seriously affects people's life experience. In order to reduce the adverse effects of noise, it is necessary to carry out noise reduction treatment on the ventilation equipment. [0003] The existing noise reduction method detects and analyzes the noise in the room, and generates a noise reduction signal with the same amplitude a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D27/00F04D29/66
Inventor 任富佳孙君李娟张帆刘荣
Owner HANGZHOU ROBAM APPLIANCES CO LTD
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