CN216557384U

CN216557384U - Air conditioner indoor unit capable of reducing noise and air conditioner

Info

Publication number: CN216557384U
Application number: CN202123056740.1U
Authority: CN
Inventors: 孙义祥; 朱小辉; 肖远富
Original assignee: Hisense Guangdong Air Conditioning Co Ltd
Current assignee: Hisense Guangdong Air Conditioning Co Ltd
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2022-05-17
Anticipated expiration: 2031-12-07

Abstract

The utility model relates to the technical field of air conditioners, and discloses an air conditioner indoor unit capable of reducing noise and an air conditioner, wherein the air conditioner indoor unit capable of reducing noise comprises an outer cover, a volute and a sound absorption box, the volute is arranged in the outer cover, the volute is provided with a mounting groove for mounting a cross-flow fan, and the bottom of the mounting groove is provided with a plurality of uniformly distributed through holes; the sound absorption box is provided with a sound absorption groove, the sound absorption box is attached to the rear side wall of the volute and enables the sound absorption groove to completely cover the plurality of through holes, and the sound absorption groove and the rear side wall of the volute are enclosed to form a sound absorption cavity. According to the air-conditioning indoor unit, the plurality of through holes are formed in the bottom of the mounting groove of the volute, the aperture of each through hole is small and is in a micropore shape, so that a micropore plate structure is formed on the bottom of the mounting groove and the rear side wall of the volute, the broadband sound absorption capacity can be realized, the BPF noise and the broadband vortex noise of the cross-flow fan are effectively reduced, the noise quality is improved, and the noise reduction effect is achieved.

Description

Air conditioner indoor unit capable of reducing noise and air conditioner

Technical Field

The utility model relates to the technical field of air conditioners, in particular to an air conditioner indoor unit capable of reducing noise and an air conditioner.

Background

The noise sources of the current air conditioning indoor unit include airflow noise caused by a fan and mechanical noise generated by the operation of components, wherein the airflow noise is the main component. Aiming at the airflow noise of the indoor unit of the air conditioner, the existing noise reduction mode mainly reduces the airflow intensity by reducing the rotating speed of the fan, but the air output of the indoor unit of the air conditioner can be reduced after the rotating speed of the fan is reduced, so that the indoor environment is cooled or the heating efficiency is slower, and the experience of a user is influenced to a certain extent.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a noise-reducing air conditioner indoor unit, which reduces airflow noise under the condition of not influencing the air supply quantity of the air conditioner indoor unit, realizes the noise reduction effect and improves the use experience of users.

In order to achieve the above object, the present invention provides an indoor unit of an air conditioner capable of reducing noise, comprising:

a housing;

the volute is arranged in the outer cover, a mounting groove for mounting the cross-flow fan is formed in the volute, and a plurality of uniformly distributed through holes are formed in the bottom of the mounting groove; and

the sound absorption box is provided with a sound absorption groove, the sound absorption box is attached to the rear side wall of the volute and enables the sound absorption groove to completely cover the plurality of through holes, and the sound absorption groove and the rear side wall of the volute are enclosed to form a sound absorption cavity.

Based on the scheme, the bottom of the mounting groove of the volute is provided with a plurality of through holes, the aperture of each through hole is smaller so as to be in a micropore shape, so that a micropore plate structure is formed on the bottom of the mounting groove and the rear side wall of the volute, and the micropore plate structure is a resonance sound absorption structure with low sound quality and high sound resistance and has the characteristics of high sound absorption coefficient and wide sound absorption frequency; because the through hole of the volute is thin and dense, the acoustic resistance is large, the acoustic mass is small, the ratio of the acoustic resistance to the acoustic mass is greatly improved, and the broadband sound absorption capacity can be realized, so that the BPF noise of the cross flow fan and the vortex noise of the broadband are effectively reduced, the noise quality is improved, and the noise reduction effect is achieved.

In some embodiments, the sound absorption box comprises a bottom plate and a fence formed by protruding along the peripheral edge of the bottom plate, and the bottom plate and the fence form the sound absorption groove in a surrounding mode.

In some embodiments, the bottom plate is an arcuate plate that conforms to the shape of the volute back side wall.

In some embodiments, the sound-absorbing box is a plastic or sheet metal part.

In some embodiments, the sound-absorbing box is fixedly attached to the rear sidewall of the volute by a snap or adhesive.

In some embodiments, the groove bottom of the mounting groove has a perforation rate of 0.1% to 5%.

In some embodiments, the perforations have a pore size of 0.1mm to 5 mm.

In some embodiments, further comprising:

the base is fixedly connected to the rear side wall of the volute to support the volute.

In some embodiments, further comprising:

the heat exchanger covers are arranged on the notches of the mounting grooves, and an air channel for mounting the cross-flow fan is formed by the heat exchanger and the mounting grooves in a surrounding mode.

Compared with the prior art, the air conditioner indoor unit capable of reducing noise has the beneficial effects that:

the bottom of the mounting groove of the volute is provided with a plurality of through holes, the aperture of each through hole is smaller so as to be in a micropore shape, so that a micropore plate structure is formed on the bottom of the mounting groove and the rear side wall of the volute, and the micropore plate structure is a resonance sound absorption structure with low sound quality and high sound resistance and has the characteristics of high sound absorption coefficient and wide sound absorption frequency; because the perforation of spiral case is thin and dense, the acoustic resistance is bigger, and the sound quality is less, and the acoustic resistance improves greatly with the ratio of sound quality, can realize broadband sound absorbing capacity to effectively reduced the BPF noise of through-flow fan and the vortex noise of wide band, improved the noise quality, thereby reach the noise reduction effect, promoted user's use experience comfort level greatly, thereby improve the market competitiveness of product.

In addition, the utility model also provides an air conditioner which comprises an air conditioner outdoor unit and the noise-reducing air conditioner indoor unit.

Drawings

Fig. 1 is a schematic structural view of a noise-reducible indoor unit of an air conditioner according to some embodiments of the present invention;

FIG. 2 is a schematic diagram of FIG. 1, taken apart;

FIG. 3 is a cross-sectional view of FIG. 1;

FIG. 4 is a schematic diagram of the structure of a volute of some embodiments of the present invention;

FIG. 5 is a schematic structural view of an acoustical box according to some embodiments of the present invention;

in the figure, the position of the upper end of the main shaft,

1. a volute; 11. mounting grooves; 12. perforating;

2. a sound absorbing box; 21. a sound absorption groove; 22. a base plate; 23. fencing;

3. a cross-flow fan;

4. a base.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1 to 5, an embodiment of the present invention provides a noise-reducing indoor unit of an air conditioner, including an outer cover (not shown), a volute 1 and a sound absorption box 2, wherein the volute 1 is disposed in the outer cover, a mounting groove 11 for mounting a cross-flow fan 3 is formed on the volute 1, and a plurality of through holes 12 are uniformly distributed on the bottom of the mounting groove 11; the sound absorption box 2 is provided with a sound absorption groove 21, the sound absorption box 2 is attached to the rear side wall of the volute 1, the sound absorption groove 21 completely covers the plurality of through holes 12, and the sound absorption groove 21 and the rear side wall of the volute 1 are enclosed to form a sound absorption cavity.

Based on the scheme, the plurality of through holes 12 are formed in the bottom of the mounting groove 11 of the volute 1, the hole diameter of each through hole 12 is small so as to be microporous, so that a microporous plate structure is formed on the bottom of the mounting groove 11 and the rear side wall of the volute 1, and the microporous plate structure is a resonance sound absorption structure with low sound quality and high sound resistance and has the characteristics of high sound absorption coefficient and wide sound absorption frequency; because the through hole 12 of the volute 1 is thin and dense, the acoustic resistance is large, the acoustic mass is small, the ratio of the acoustic resistance to the acoustic mass is greatly improved, and the broadband sound absorption capability can be realized, thereby effectively reducing the BPF noise of the cross flow fan 3 and the vortex noise of the broadband, improving the noise quality, and achieving the noise reduction effect.

In some embodiments, referring to fig. 5, the sound absorption box 2 includes a bottom plate 22 and a surrounding barrier 23 formed by protruding along the peripheral edge of the bottom plate 22, and the bottom plate 22 and the surrounding barrier 23 surround to form the sound absorption groove 21. Wherein, bottom plate 22 and enclose fender 23 and can be integrated into one piece structure to make bottom plate 22 and enclose the junction between fender 23 for seal structure, avoid the amount of wind and the noise in spiral case 1 to leak, play noise reduction effect.

Further, in some embodiments, the bottom plate 22 is an arc-shaped plate matched with the shape of the rear side wall of the volute 1, so as to increase the space of the sound absorption cavity to improve the sound absorption effect, and meanwhile, the noise is gradually absorbed along the arc-shaped surface of the bottom plate 22, so that the noise reduction effect is further improved. In other embodiments, the bottom plate 22 may also be flat or wavy.

In some embodiments, the sound absorption box 2 is a plastic or sheet metal part, for example, integrated by injection molding or formed by bending, so that the sound absorption box 2 has a thin-wall structure, thereby reducing material and weight and reducing use cost.

In some embodiments, the sound-absorbing box 2 is fixedly attached to the rear side wall of the scroll casing 1 by means of a snap or glue. The buckle is a common structure in the field, and the details are omitted here. The gluing can be solid glue or sealing glue, so that the sound absorption box 2 is in sealing connection with the rear side wall of the volute 1.

In some embodiments, the rate of the through-holes 12 at the bottom of the mounting groove 11 is 0.1% to 5%. For example, 0.1%, 0.5%, 1%, 2%, 3%, 4%, 5%, etc., by controlling the rate of the perforation 12 of the mounting groove 11, the consumption effect of the air on the sound energy when the noise passes through the perforation 12 is improved, thereby achieving the noise reduction effect.

Theoretically, the smaller the aperture of the through hole 12 is, the more obvious the influence is on the maximum value of the sound absorption coefficient, the larger the sound absorption coefficient is, the wider the frequency bandwidth can be, the better the sound absorption effect is relatively, but the larger the processing difficulty is, the higher the processing cost is; if the aperture of the through hole 12 is too large, the sound absorption coefficient is reduced, resulting in an insignificant noise reduction effect. In some embodiments, the aperture of the through hole 12 of the embodiment of the present invention is 0.1mm to 5mm, for example, 0.1mm, 0.5mm, 1mm, 3mm, 5mm, etc., which facilitates the opening of the through hole 12 on the scroll casing 1, and thus, the effective noise reduction effect is achieved.

In some embodiments, the noise-reducing indoor unit of an air conditioner according to an embodiment of the present invention further includes a base 4; the base 4 is fixedly connected to the rear side wall of the volute 1 to support the volute 1, the base 4 is detachably connected with the volute 1 through a threaded fastener, and the volute 1 is fixed in the outer cover through the base 4.

In some embodiments, the noise-reducing indoor unit of an air conditioner according to an embodiment of the present invention further includes a heat exchanger (not shown in the drawings); the heat exchanger cover is arranged on a notch of the mounting groove 11, an air channel for mounting the cross-flow fan 3 is formed by the heat exchanger and the mounting groove 11 in a surrounding mode, and therefore air passes through the heat exchanger to form cold air or warm air which is then driven by the cross-flow fan 3 to be sent out from an air outlet of the outer cover.

To sum up, the embodiment of the utility model provides an air-conditioning indoor unit capable of reducing noise, which is characterized in that a plurality of through holes 12 are formed at the bottom of a mounting groove 11 of a volute 1, the hole diameter of each through hole 12 is smaller so as to be microporous, so that a microporous plate structure is formed at the bottom of the mounting groove 11 and the rear side wall of the volute 1, and the microporous plate structure is a resonance sound absorption structure with low sound quality and high sound resistance and has the characteristics of high sound absorption coefficient and wide sound absorption frequency; because the perforation 12 of the volute 1 is thin and dense, the acoustic resistance is large, the acoustic mass is small, the ratio of the acoustic resistance to the acoustic mass is greatly improved, and the broadband sound absorption capacity can be realized, thereby effectively reducing the BPF noise of the cross flow fan 3 and the vortex noise of the broadband, improving the noise quality, achieving the noise reduction effect, greatly improving the use experience comfort level of users, and improving the market competitiveness of products.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. An air conditioning indoor unit capable of reducing noise, comprising:

a housing;

2. An indoor unit of an air conditioner for reducing noise as set forth in claim 1, wherein said sound absorption box includes a bottom plate and a surrounding wall formed to protrude along a peripheral edge of said bottom plate, said bottom plate and said surrounding wall enclosing said sound absorption groove.

3. The indoor unit of an air conditioner as claimed in claim 2, wherein the bottom plate is an arc-shaped plate adapted to the shape of the rear sidewall of the scroll casing.

4. The indoor unit of an air conditioner as claimed in claim 1, wherein the sound absorption box is made of plastic or sheet metal.

5. The noise-reducible indoor unit of an air conditioner of any one of claims 1 to 4, wherein the sound absorption box is fixedly attached to a rear side wall of the scroll casing by a snap or an adhesive.

6. The indoor unit of an air conditioner as claimed in claim 1, wherein the perforation rate of the bottom of the installation groove is 0.1-5%.

7. The noise-reducible indoor unit of an air conditioner of claim 1 or 6, wherein the perforated hole has a diameter of 0.1mm to 5 mm.

8. The indoor unit of an air conditioner for reducing noise of claim 1, further comprising:

9. An indoor unit of an air conditioner capable of reducing noise according to claim 1, further comprising:

10. An air conditioner comprising an outdoor unit of the air conditioner and the indoor unit of the air conditioner as claimed in any one of claims 1 to 9, which are connected to each other.