CN213454185U

CN213454185U - Noise reduction structure for air purifier and air purifier

Info

Publication number: CN213454185U
Application number: CN202021026635.6U
Authority: CN
Inventors: 严东旭; 周佳杰; 汤文斌; 郑军妹; 霍彦强
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2021-06-15
Anticipated expiration: 2030-06-05

Abstract

The utility model relates to a structure of making an uproar falls for air purifier, its characterized in that: the silencer comprises a cylindrical body and a top plate positioned at the upper end of the body, wherein a synthesized silencing cavity is enclosed between the lower wall surface of the top plate and the inner wall surface of the body, a plurality of through holes are formed in the body and the top plate respectively, and a sponge layer is further coated on the periphery of the body. When the utility model is used, the through holes on the body are matched with the sponge layer on the periphery of the body, sound energy is absorbed by utilizing the friction of sound waves in the sound-absorbing material which is porous and communicated with the sound-absorbing material, and the noise is eliminated, when wind enters the silencing cavity from the lower port, the generated noise is reflected in the silencing cavity in a reciprocating way so as to enter the sponge layer connected with the sound-absorbing material through the porous silencing side wall, and the noise is reduced preliminarily through the friction of the sound waves and the sponge; when wind flows to the top plate, the frequency spectrum of jet noise moves to high frequency or ultrahigh frequency through the small holes, so that audible components in the frequency spectrum are obviously reduced, and the noise is further reduced more effectively.

Description

Noise reduction structure for air purifier and air purifier

Technical Field

The utility model relates to a structure technical field of making an uproar specifically indicates a structure of making an uproar falls for air purifier.

Background

As society develops and environments become polluted, air cleaners are becoming more familiar, and in general, air cleaners absorb polluted ambient air, purify the absorbed air, and discharge clean air to the outside, thereby purifying air in the area around the air cleaners.

For air purifier, noise and purification CADR are the main index of judging air purifier good and bad, and the technique of making an uproar falls to have the significance to air purifier's use. At present, the amortization cotton commonly used is as the measure of making an uproar that falls in the air purifier, and the cotton noise reduction effect of amortization is limited, is difficult to play the effect of effectively making an uproar that falls to noise problems such as abnormal sound simultaneously.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the first technical problem to provide an effective noise reduction's of compound amortization mode that utilizes via hole amortization and hindering nature amortization to combine together structure of making an uproar falls for air purifier to the current situation of prior art.

The utility model discloses the second technical problem that will solve is to prior art's current situation, provides an air purifier who uses to have the above-mentioned structure of making an uproar of falling.

The utility model provides a technical scheme that at least one above-mentioned technical problem adopted does: a structure of making an uproar falls for air purifier which characterized in that: the silencer comprises a cylindrical body and a top plate positioned at the upper end of the body, wherein a synthesized silencing cavity is enclosed between the lower wall surface of the top plate and the inner wall surface of the body, a plurality of through holes are formed in the body and the top plate respectively, and a sponge layer is further coated on the periphery of the body.

Preferably, the diameter of the through holes on the top plate is 2-9 mm, and the distance d between every two adjacent through holes is more than 2mm and less than or equal to 10 mm.

Preferably, the diameter of the through hole on the top plate is 6mm, and the distance between two adjacent through holes is 8 mm.

An air purifier, its characterized in that: the noise reduction structure is arranged in the shell and is close to the air outlet, and the top plate is arranged perpendicular to the gas circulation direction.

In the above scheme, a water oxygen module for generating hydrated negative oxygen ions is arranged in the central part of the shell close to the air outlet, the water oxygen module is vertically arranged, an opening for the water oxygen module to pass through is formed in the top plate, and the sponge layer is arranged close to the inner wall of the shell. The structure is combined with the water oxygen module, so that better sealing performance is kept, and noise is eliminated.

Compared with the prior art, the utility model has the advantages of: when the utility model is used, the through holes on the body are matched with the sponge layer on the periphery of the body, sound energy is absorbed by utilizing the friction of sound waves in the sound-absorbing material which is porous and communicated with the sound-absorbing material, and the noise is eliminated, when wind enters the silencing cavity from the lower port, the generated noise is reflected in the silencing cavity in a reciprocating way so as to enter the sponge layer connected with the sound-absorbing material through the porous silencing side wall, and the noise is reduced preliminarily through the friction of the sound waves and the sponge; when wind flows to the top plate, the frequency spectrum of jet noise moves to high frequency or ultrahigh frequency through the small holes, so that audible components in the frequency spectrum are obviously reduced, and the noise is further reduced more effectively.

Drawings

Fig. 1 is a schematic structural diagram of a noise reduction structure according to an embodiment of the present invention;

FIG. 2 is an exploded view of FIG. 1;

fig. 3 is a schematic structural diagram of an air purifier according to an embodiment of the present invention;

fig. 4 is a partially exploded view of fig. 3.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 and 2, the noise reduction structure for an air purifier of the present embodiment includes a main body 1 formed in a cylindrical shape and a top plate 2 located at an upper end of the main body 1, and in order to adapt to the shape of the housing of the air purifier of the present embodiment, the main body 1 has a square structure, but is not limited to this structure.

Enclose synthetic amortization chamber 10 under the roof 2 between wall and the 1 internal face of body jointly, set up a plurality of through-hole 20 respectively on body 1 and the roof 2, body 1 periphery still cladding has sponge layer 3. The diameter of the through hole 20 on the top plate 2 is 2-9 mm, preferably 6mm in the embodiment; the distance d between two adjacent through holes 20 is more than 2mm and less than or equal to 10mm, and is optimally 8mm in the embodiment.

As shown in fig. 3 and 4, the air purifier of this embodiment includes a housing 4 and the noise reduction structure a, the lower portion of the housing 4 is provided with an air inlet 41, the top portion of the housing 4 is provided with an air outlet 42, the noise reduction structure a is disposed in the housing 4 and is close to the air outlet 42, the top plate 2 is disposed in a direction perpendicular to the gas flowing direction, and the lower port of the noise reduction cavity 10 faces downward.

The water oxygen module 5 for generating hydrated negative oxygen ions is disposed in the central portion of the housing 4 near the air outlet 42, and the mechanism of generating hydrated negative oxygen ions by the water oxygen module 5 is the same as that of the applicant's prior application 201820929955.9, and is not described herein again. The water oxygen module 5 is vertically arranged, the top plate 2 is provided with an opening 21 through which the lower part of the water oxygen module 5 passes, the sponge layer 3 is arranged close to the inner wall of the shell 4, and the edge of the opening 21 on the top plate 2 is arranged close to the outer wall of the water oxygen module 5. The structure is combined with the water oxygen module 5, so that better sealing performance is kept, and noise is eliminated.

In the embodiment, noise reduction is carried out by utilizing a composite noise reduction mode combining via hole noise reduction and resistive noise reduction, when the noise reduction device is used, the through holes 20 on the body 2 are matched with the sponge layer 3 on the periphery of the through holes, sound waves are utilized to rub in a sound absorbing material which is porous and communicated with the sound absorbing material to absorb sound energy and reduce noise, when wind enters the noise reduction cavity 10 from the lower port, the generated noise is reflected in the noise reduction cavity 10 in a reciprocating manner so as to enter the sponge layer 3 connected with the sound absorption cavity through the porous noise reduction side wall, and the noise is reduced primarily through the friction between the sound waves and the; when wind flows to the top plate 2, the frequency spectrum of the jet noise moves to high frequency or ultrahigh frequency through the small holes, so that the audible sound component in the frequency spectrum is obviously reduced, and the noise is further reduced more effectively.

Claims

1. A structure of making an uproar falls for air purifier which characterized in that: the silencer comprises a cylindrical body (1) and a top plate (2) located at the upper end of the body (1), wherein a synthetic silencing cavity (10) is defined between the lower wall surface of the top plate (2) and the inner wall surface of the body (1), a plurality of through holes (20) are formed in the body (1) and the top plate (2) respectively, and a sponge layer (3) is further coated on the periphery of the body (1).

2. The noise reduction structure for an air cleaner according to claim 1, wherein: the diameter of the through holes (20) on the top plate (2) is 2-9 mm, and the distance d between every two adjacent through holes (20) is more than 2mm and less than or equal to 10 mm.

3. The noise reduction structure for an air cleaner according to claim 2, wherein: the diameter of the through hole (20) on the top plate (2) is 6mm, and the distance between every two adjacent through holes (20) is 8 mm.

4. An air purifier, its characterized in that: the noise reduction structure comprises a shell (4) and the noise reduction structure as claimed in any one of claims 1 to 3, wherein an air inlet (41) is formed in the lower portion of the shell (4), an air outlet (42) is formed in the top of the shell (4), the noise reduction structure is arranged in the shell (4) and close to the air outlet (42), and the top plate (2) is arranged in a direction perpendicular to the air flowing direction.

5. The air purifier of claim 4, wherein: the water-oxygen module (5) used for generating hydrated negative oxygen ions is arranged in the central part of the shell (4) close to the air outlet (42), the water-oxygen module (5) is vertically arranged, an opening (21) for the water-oxygen module (5) to pass through is formed in the top plate (2), and the sponge layer (3) is arranged close to the inner wall of the shell (4).