CN212618674U

CN212618674U - Noise reduction assembly for air duct machine

Info

Publication number: CN212618674U
Application number: CN202020812659.8U
Authority: CN
Inventors: 张绍波
Original assignee: Chongqing Haoshi Mechanical And Electrical Equipment Installation Engineering Co ltd
Current assignee: Chongqing Haoshi Mechanical And Electrical Equipment Installation Engineering Co ltd
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2021-02-26
Anticipated expiration: 2030-05-15

Abstract

The utility model relates to a noise control technical field specifically discloses a subassembly of making an uproar falls for tuber pipe machine, fall the shell of making an uproar including setting up the vacuum outside the tuber pipe machine, it has the opening that is used for placing the tuber pipe machine to fall to make an uproar shell one side and open, it is equipped with the rubber pad that is used for the absorbing to fall the bottom surface in the shell, be equipped with the mounting panel that is used for installing the tuber pipe machine on the rubber pad, mounting panel upper surface rigid coupling has a plurality of threaded rods, the equal slip is equipped with the preforming that is used for compressing tightly the tuber pipe machine on the threaded rod, threaded connection has the lock nut who is used for locking the preforming on the threaded rod, the preforming is established in the lock nut below, it all is equipped with a plurality of perforated plywood to fall the shell inner wall and interior top surface, it is cotton to all.

Description

Noise reduction assembly for air duct machine

Technical Field

The utility model relates to a noise control technical field specifically discloses a subassembly of making an uproar falls for tuber pipe machine.

Background

Along with the economic development and the continuous improvement of life quality, the ducted air conditioner becomes a common household appliance, the noise generated in the process of heating and refrigerating by the traditional ducted air conditioner is transmitted to the air, the daily life of people is seriously influenced, therefore, a user puts forward higher requirements on the comfort of the ducted air conditioner, and the ducted air conditioner mounting assembly with the noise reduction function comes into force.

There are two common methods of noise reduction, passive and active. The passive noise reduction mainly utilizes the sound insulation and absorption performance of materials to reduce noise, is more effective on medium and high frequency noise, but has the advantages of slow attenuation of low frequency noise, strong penetrating power and easy diffraction, and the effect of reducing the low frequency noise by using a passive means is difficult to achieve. The active noise reduction is to generate noise reduction sound waves with opposite phases to external noise through an active noise reduction system, neutralize the noise, realize the effect of reducing the noise, actively reduce the noise and be easier to control the low-frequency noise, and actively reduce the noise more effectively to reduce the low-frequency noise compared with a passive noise reduction technology.

The existing active noise reduction device of the air duct machine comprises a sound collector, a loudspeaker and a noise reduction module, wherein the noise reduction module can generate a noise reduction signal which is equal to the amplitude of a noise signal detected by the sound collector and opposite to the phase of the noise signal, and the noise reduction signal is emitted through the loudspeaker, so that the noise detected by the sound collector and the noise reduction signal emitted by the loudspeaker are mutually offset, and thus noise elimination is realized.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve traditional tuber pipe machine noise reduction assembly and to the obscure problem of noise elimination effect.

In order to achieve the purpose, the utility model provides a noise reduction assembly for an air duct machine, which comprises a vacuum noise reduction shell arranged outside the air duct machine, wherein one side of the noise reduction shell is provided with an opening for placing the air duct machine, the inner bottom surface of the noise reduction shell is provided with a rubber pad for damping, the rubber pad is provided with a mounting plate for mounting the air duct machine, the upper surface of the mounting plate is fixedly connected with a plurality of threaded rods, pressing sheets for pressing the air duct machine are all arranged on the threaded rods in a sliding manner, the threaded rods are in threaded connection with locking nuts for locking the pressing sheets, and the pressing sheets are arranged below the locking;

the shell inner wall of making an uproar and interior top surface all are equipped with a plurality of perforated plywood, all are equipped with the glass cotton between the perforated plywood, and a plurality of initiative noise reduction device settings are at the opening part of making an uproar shell of making an uproar.

The principle and effect of this basic scheme lie in:

1. the tuber pipe machine passes through the mounting panel to be installed in the shell of making an uproar that falls, and the mounting panel is established on the rubber pad, and the tuber pipe machine can effectual reduction tuber pipe machine's vibration frequency at the during operation rubber pad, and after vibration frequency reduced, the volume of sending of noise will reduce thereupon.

2. Sound needs to propagate through medium vibrations, and does not possess the medium of sound propagation in the vacuum, therefore sound can not propagate in the vacuum, falls the subassembly of making an uproar in this, falls the casing of making an uproar the shell and is hollow vacuum structure, and the tuber pipe machine just can not get into the human ear from penetrating the shell of making an uproar of falling in the noise of during operation, plays certain effect of making an uproar.

3. The reflection can take place in the shell of making an uproar in the noise that tuber pipe machine sent at the during operation, the opening part reflection of the shell of making an uproar is gone out from falling greatly probably to the meeting, consequently fall a plurality of perforation plywood and the glass cotton of setting between perforation plywood that shells inner wall and interior top surface set up of making an uproar, the noise will be at perforation plywood and the cotton inner loop reflection of glass, thereby the energy of noise has been reduced, and the cotton inorganic fibre of glass, good sound nature of inhaling has, the cotton noise that gets into glass can be by very high absorption, through perforation plywood and glass cotton, the effectual noise that has reduced is from the open-ended of the shell of making an uproar volume of transmitting.

4. The active noise reduction device is arranged at an opening of the noise reduction shell, and generates noise reduction sound waves opposite to the phase of external noise when the noise is reduced, so that the noise is neutralized, and the effect of reducing the noise is realized.

Compared with the prior art, the noise reduction assembly has the advantages that the air duct machine is completely arranged in the noise reduction shell, noise sound energy is reduced through blocking of a transmission path and reflection, noise is absorbed, and the active noise reduction device is arranged to neutralize noise, so that the air duct machine is effectively subjected to noise reduction treatment, the feasibility is high, and the large-scale popularization is facilitated.

Furthermore, the bottom surface in the noise reduction shell is also provided with a plurality of positioning cylinders. Prevent the mounting plate from shifting.

Furthermore, the lower surface of the mounting plate is fixedly connected with a positioning rod which can be inserted into the positioning cylinder. Prevent the mounting plate from shifting.

Further, the glass wool is wavy. So that the noise is reflected back and forth between the glass wool and the sound energy of the noise is reduced.

Further, the installation included angle between the loudspeaker and the inner wall of the noise reduction shell is 45-75 degrees. The control range of the loudspeaker can completely cover the opening of the noise reduction shell, so that the noise can be effectively neutralized.

Drawings

Fig. 1 is a front view of a noise reduction assembly for a ducted air conditioner according to an embodiment of the present invention;

fig. 2 is a cross-sectional top view of a noise reduction assembly for a ducted air conditioner according to an embodiment of the present invention;

fig. 3 is an installation schematic diagram of an active noise reduction device in a noise reduction assembly for a ducted air conditioner according to an embodiment of the present invention.

Detailed Description

The following is further detailed by the specific embodiments:

reference numerals in the drawings of the specification include: the noise reduction device comprises a noise reduction shell 1, a pressing sheet 2, a loudspeaker 3, glass wool 4, a threaded rod 5, a locking nut 6, a perforated plywood 7, a positioning cylinder 8, a rubber pad 9, an installation plate 10, a positioning rod 11 and a sound collector 12.

The utility model provides a subassembly of making an uproar falls for tuber pipe machine, the embodiment is shown in fig. 1 and fig. 2, it has an opening that is used for placing tuber pipe machine to openly open at the vacuum shell 1 of making an uproar falls, it has a rubber pad 9 that is used for the absorbing to paste to fall the interior bottom surface of shell 1 of making an uproar, place a mounting panel 10 that is used for installing tuber pipe machine on the rubber pad 9, it still is provided with four location section of thick bamboo 8 to fall the interior bottom surface of shell 1 of making an uproar, mounting panel 10 lower surface welding has four locating levers 11 that can insert location section of thick bamboo 8, locating lever 11 slides and sets up in location section of thick bamboo 8, four angles of mounting panel 10 upper surface all weld have a threaded rod 5, equal sliding sleeve has preforming 2 that is used for compressing tightly.

It has a plurality of perforation plywood 7 all to paste to fall shell 1 inner wall and interior top surface of making an uproar, all is equipped with wavy glass cotton 4 between the perforation plywood 7, and four initiative noise reduction devices are installed and are fallen the interior top surface and the interior bottom surface of the opening part of shell 1 of making an uproar, and the initiative noise reduction device includes sound collector 12, speaker 3 and the module of making an uproar, and sound collector 12 and speaker 3 are connected with the module electricity of making an uproar, and the installation contained angle of speaker 3 and the shell 1 inner wall of making an uproar of.

When the air duct type air conditioner is used, the air duct type air conditioner is firstly installed on the installation plate 10, the locking nut 6 is screwed downwards, the pressing plate is indirectly locked on the upper surface of the air duct type air conditioner, various air conveying pipes and a power supply are communicated, the active noise reduction device is connected with the power supply, and therefore the noise reduction work can be started.

The ducted air conditioner starts to work and then emits noise, the noise is firstly transmitted to the inner wall of the noise reduction shell 1, the noise is reflected in the perforated plywood 7 and the glass wool 4 to consume sound energy and be absorbed, and meanwhile, the noise of the vacuum noise reduction shell 1 cannot be transmitted out from other places except the opening of the noise reduction shell 1.

The opening part is provided with an active noise reduction device, the active noise reduction device comprises a sound collector 12, a loudspeaker 3 and a noise reduction module, the sound collector 12 and the loudspeaker 3 are arranged on the inner side of an air supply pipe of the central air duct machine, the noise reduction module is arranged on the outer side of the air supply pipe, the noise reduction module can generate noise reduction signals with the same amplitude and opposite phases as the noise signals detected by the sound collector 12, and the noise reduction signals are emitted through the loudspeaker 3, so that the noise detected by the sound collector 12 and the noise reduction signals emitted by the loudspeaker 3 are mutually offset, and the noise elimination is realized.

And because the perforated plywood 7 and the glass wool 4 are arranged, the transmission quantity of noise is effectively reduced, and the noise reduction difficulty of the active noise reduction device is reduced, so that the noise is well controlled in the noise reduction shell 1.

The ducted air conditioner vibrates during operation, and the rubber pad 9 can effectively reduce the vibration frequency, so that the noise quantity at the source can be reduced.

The utility model discloses set up the tuber pipe machine completely in one falls the shell of making an uproar 1, through blocking propagation path, reflection noise sound energy and absorbing noise and set up the initiative and fall the device of making an uproar and noise, the effectual processing of making an uproar that falls to the tuber pipe machine, the feasibility is high, is convenient for promote on a large scale.

The above description is only for the embodiments of the present invention, and the common general knowledge of the known specific structures and characteristics in the schemes is not described herein too much, and those skilled in the art will know all the common technical knowledge in the technical field of the present invention before the application date or the priority date, can know all the prior art in this field, and have the ability to apply the conventional experimental means before this date, and those skilled in the art can combine their own ability to perfect and implement the schemes, and some typical known structures or known methods should not become obstacles for those skilled in the art to implement the present application. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. A noise reduction assembly for an air duct machine comprises an active noise reduction device, wherein the active noise reduction device comprises a sound collector, a loudspeaker and a noise reduction module, the sound collector and the loudspeaker are electrically connected with the noise reduction module, the noise reduction assembly is characterized by also comprising a vacuum noise reduction shell arranged outside the air duct machine, one side of the noise reduction shell is provided with an opening for placing the air duct machine, the inner bottom surface of the noise reduction shell is provided with a rubber pad for damping, the rubber pad is provided with a mounting plate for mounting the air duct machine, the upper surface of the mounting plate is fixedly connected with a plurality of threaded rods, pressing sheets for pressing the air duct machine are arranged on the threaded rods in a sliding mode, locking nuts for locking the pressing sheets are connected onto the;

2. The noise reduction assembly for a ducted air conditioner of claim 1, wherein: the bottom surface still is provided with a plurality of location section of thick bamboo in the shell of making an uproar falls.

3. The noise reduction assembly for a ducted air conditioner of claim 2, wherein: the lower surface of the mounting plate is fixedly connected with a positioning rod which can be inserted into the positioning barrel.

4. The noise reduction assembly for a ducted air conditioner of claim 1, wherein: the glass wool is wavy.

5. The noise reduction assembly for a ducted air conditioner of claim 1, wherein: the installation included angle between the loudspeaker and the inner wall of the noise reduction shell is 45-75 degrees.