Active ventilation muffler

A noise reduction device and noise technology, applied in space heating and ventilation, space heating and ventilation details, heating and ventilation control systems, etc., can solve problems such as mature applications that are rarely reported, and achieve small volume and low resistance loss , the effect of compact structure

Active Publication Date: 2016-04-20
NO 711 RES INST CHINA SHIPPING HEAVY IND GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the development of foreign active mufflers, domestic research reports on active mufflers are b

Method used

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  • Active ventilation muffler

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Embodiment Construction

[0020] The application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, rather than to limit the invention. It should also be noted that, for ease of description, only parts related to the invention are shown in the drawings.

[0021] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0022] like figure 1 As shown, this embodiment provides an active ventilation and noise reduction device, including a buckle box 1, a controller 2, a front sensor 3, an error sensor 4 and an operating speaker 5, and the controller 2 is installed on the buckle box 1;

[0023] The front sensor 3 is...

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Abstract

The invention discloses an active ventilation muffler, comprising a fastening box, a controller, a front sensor, an error sensor and an actuating speaker, the controller being mounted on the fastening box; the front sensor is connected to the controller and used for transmitting an acquired noise source noise signal to the controller; the actuating speaker is connected to the controller and mounted on the side of the front sensor far away from a noise source and is used for transmitting offset sound to offset noise given by the noise source; the error sensor is connected with the controller and mounted on the side of the actuating speaker far away from the noise source and is used for transmitting a stack noise signal of the noise given by the noise source and the offset sound transmitted by the actuating speaker to the controller. The active ventilation muffler has an integration of the sensor, the controller and an actuator and may be flexibly mounted on a duct wall for removing noise in a ventilation line system, and a noise control device high in muffling capacity, compact in structure, small in size, low in weight and low in resistance loss is provided for places having a high requirement on ventilation noise.

Description

technical field [0001] The invention relates to the technical field of noise control, in particular to the technical field of application of ventilation system noise control, and is especially suitable for places with high requirements for noise restriction at air outlets of ventilation and air-conditioning system pipes. Background technique [0002] Noise pollution is a global environmental problem. Excessive noise pollution affects people's physiology and psychology. As a developing country with rapid economic growth and accelerated urbanization, my country has built a large number of industrial, civil and public buildings, and increased ventilation and air conditioning system projects. Fans have become one of the main sources of noise pollution in cities. At the same time, as the division of noise limits becomes more and more stringent, the noise pollution of fans in industrial enterprises has also received widespread attention. Therefore, fan noise control has become a ...

Claims

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Application Information

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IPC IPC(8): F24F13/24F24F11/00
CPCF24F11/30F24F11/70F24F13/24F24F2013/247F24F2110/00F24F2130/40
Inventor 彭安吴恒亮
Owner NO 711 RES INST CHINA SHIPPING HEAVY IND GRP
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