CN205299772U - Active noise reduction air purifier - Google Patents

Abstract

This case is an active noise-reducing air purifier, including: a casing, a purifier air inlet, a purifier air outlet, an air purification filter, an air inlet speaker bracket, and an air inlet speaker are arranged in sequence from bottom to top inside the casing , dust collector, drainage fan, drainage fan bracket, controller board and sensor, air outlet speaker bracket, air outlet speaker, wherein, the air inlet speaker bracket and the air outlet speaker bracket are provided with grooves, and the air inlet speaker The air outlet speakers are respectively installed in the grooves, the drainage fan bracket fixes the drainage fan in a hanging manner, and the controller board is used for signal collection of the air inlet speakers, air outlet speakers, and sensors, And it is used for noise reduction by controlling the diversion fan, the air inlet loudspeaker and the air outlet loudspeaker to emit anti-phase noise. The active noise reduction air purifier provided in this case uses the controller board to greatly reduce the noise of the air purifier.

Description

An active noise reduction air purifier

technical field

The utility model relates to an air purifier, in particular to an active noise reduction air purifier.

Background technique

Air purifiers, also known as "air cleaners", air fresheners, and purifiers, refer to decoration pollution that can absorb, decompose or transform various air pollutants (generally including PM2.5, dust, pollen, odor, formaldehyde, etc.) , bacteria, allergens, etc.), products that effectively improve air cleanliness are mainly divided into household, commercial, industrial, and building.

Due to the influence of the rotation of the motor and fan blades, the radiated noise of the air purifier generally has significant low-frequency periodic noise. The above-mentioned noise brings great annoyance to people, and its suppression is of great significance. The traditional noise reduction solution is to add passive noise-absorbing materials or structures, such as sound-absorbing cotton, resistant mufflers, etc. However, for low-frequency line spectrum noise, the above method is not only bulky and heavy, but also causes pressure loss, which affects the performance of the exhaust fan. Therefore, the products currently on the market generally do not deal with their noise.

Utility model content

In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide an active noise reduction air cleaner with simple structure and excellent performance.

In order to achieve the above object, the utility model is realized through the following technical solutions:

An active noise reduction air purifier comprising:

Case 1, purifier air inlet 2, purifier air outlet 13, inside the case from bottom to top, there are air purification filter 3, air inlet speaker bracket 4, air inlet speaker 5, dust collector 6, drainage fan 7 , the drainage fan bracket 9, the controller board 10 and the sensor 14, the air outlet speaker bracket 11, the air outlet speaker 12, wherein the air inlet speaker bracket and the air outlet speaker bracket are provided with grooves, the air inlet speaker, The air outlet speakers are respectively installed in the grooves, the drainage fan bracket fixes the drainage fan in a hanging manner, the controller board is used for signal collection of the air inlet speakers, air outlet speakers, and sensors, and It is used for noise reduction by controlling the induced draft fan, the air inlet speaker, and the air outlet speaker to emit anti-phase noise.

Preferably, in the active noise-reducing air cleaner, a tachometer 8 is also provided on the shaft of the draft fan for collecting original noise information and sending it to the controller board.

Preferably, in the active noise reduction air purifier, a sound insulation layer is provided between the air inlet speaker bracket and the air inlet speaker, and the opening direction of the sound insulation layer is consistent with the air flow direction.

Preferably, in the active noise reduction air purifier, a sound insulation layer is provided between the air outlet speaker bracket and the air outlet speaker, and the opening direction of the sound insulation layer is consistent with the air flow direction.

Preferably, in the active noise reduction air purifier, the controller board includes a power amplifier module capable of driving the speaker.

Preferably, in the active noise-reducing air purifier, an air duct is further provided between the air inlet of the purifier and the air purification filter.

Beneficial effects of the utility model: This case provides an active noise reduction air purifier, which greatly reduces the noise of the air purifier by using the controller board, and through the structural design between the speaker bracket and the speaker, the volume, There is no noticeable increase in weight.

Description of drawings

Fig. 1 is a schematic structural diagram of an active noise reduction air purifier according to an embodiment of the present invention.

Among them, 1-casing, 2-purifier air inlet, 3-air purification filter, 4-air inlet speaker bracket, 5-air inlet speaker, 6-dust collector, 7-drainage fan, 8-tachometer, 9 - Drainage fan bracket, 10 - controller board, 11 - air outlet speaker bracket, 12 - air outlet speaker, 13 - purifier air outlet, 14 - sensor.

detailed description

The utility model will be described in further detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it by referring to the description.

An active noise reduction air cleaner, please refer to accompanying drawing 1, comprising:

Case 1, purifier air inlet 2, purifier air outlet 13, inside the case from bottom to top, there are air purification filter 3, air inlet speaker bracket 4, air inlet speaker 5, dust collector 6, drainage fan 7 , the drainage fan bracket 9, the controller board 10 and the sensor 14, the air outlet speaker bracket 11, the air outlet speaker 12, wherein the air inlet speaker bracket and the air outlet speaker bracket are provided with grooves, the air inlet speaker, The air outlet speakers are respectively installed in the grooves, the drainage fan bracket fixes the drainage fan in a hanging manner, the controller board is used for signal collection of the air inlet speakers, air outlet speakers, and sensors, and It is used for noise reduction by controlling the induced draft fan, the air inlet speaker, and the air outlet speaker to emit anti-phase noise.

Further, a tachometer 8 is provided on the shaft of the draft fan for collecting original noise information and sending it to the controller board.

Further, a sound insulation layer is provided between the air inlet speaker bracket and the air inlet speaker, and the opening direction of the sound insulation layer is consistent with the air flow direction.

Further, a sound insulation layer is provided between the air outlet speaker bracket and the air outlet speaker, and the opening direction of the sound insulation layer is consistent with the air flow direction.

Further, the controller board has digital signal acquisition and processing functions, and includes a power amplifier module capable of driving the speaker.

Further, an air duct is also provided between the air inlet of the purifier and the air purification filter.

Although the embodiment of the present utility model has been disclosed as above, it is not limited to the use listed in the specification and implementation, it can be applied to various fields suitable for the present utility model, and for those familiar with the art, Further modifications can be readily effected, so the invention is not limited to the specific details and examples shown and described herein without departing from the general concept defined by the claims and their equivalents.

Claims (6)

1. one kind active is fallen air purifier of making an uproar, it is characterised in that, comprising:

Machine shell (1), cleaner blast inlet (2), cleaner goes out air port (13), machine shell inside is provided with air purifying filter mesh (3) from down to up successively, blast inlet loudspeaker support (4), blast inlet loud speaker (5), fly-ash separator (6), drainage blower fan (7), drainage fan supporter (9), controller board card (10) and sensor (14), go out air port loudspeaker support (11), go out air port loud speaker (12), wherein, described blast inlet loudspeaker support, go out air port loudspeaker support and it is provided with groove, described blast inlet loud speaker, going out air port loud speaker is arranged in described groove respectively, described drainage fan supporter fixes described drainage blower fan with hang, described controller board card is used for described blast inlet loud speaker, go out air port loud speaker, the signals collecting of sensor, and to control drainage blower fan, described blast inlet loud speaker, go out the mode that air port loud speaker sends anti-phase noise to make an uproar for falling.

2. active as claimed in claim 1 air purifier of making an uproar falls, it is characterised in that, the rotating shaft of described drainage blower fan is also provided with velocity gauge (8), for gather raw noise information send to described controller board card.

3. active as claimed in claim 2 air purifier of making an uproar falls, it is characterised in that, also it is provided with pugging between described blast inlet loudspeaker support and blast inlet loud speaker, the opening direction of this pugging is consistent with air current flow direction.

4. active as claimed in claim 3 air purifier of making an uproar falls, it is characterised in that, described in go out air port loudspeaker support and go out between the loud speaker of air port, to be also provided with pugging, the opening direction of this pugging is consistent with air current flow direction.

5. active as claimed in claim 4 air purifier of making an uproar falls, it is characterised in that, described controller board card comprises can drive described blast inlet loud speaker, go out the power amplifier module of air port loud speaker.

6. active as claimed in claim 5 air purifier of making an uproar falls, it is characterised in that, also it is provided with guide duct between described cleaner blast inlet and air purifying filter mesh.