CN215372683U - Air conditioner indoor unit - Google Patents
Air conditioner indoor unit Download PDFInfo
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- CN215372683U CN215372683U CN202121434278.1U CN202121434278U CN215372683U CN 215372683 U CN215372683 U CN 215372683U CN 202121434278 U CN202121434278 U CN 202121434278U CN 215372683 U CN215372683 U CN 215372683U
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- indoor unit
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Abstract
The utility model relates to the technical field of air conditioners, and discloses an air conditioner indoor unit, which comprises: the spiral case is provided with an accommodating groove on the front side, and a hollow part communicated with the accommodating groove on the rear side; the fan is arranged in the accommodating groove; the sound absorption assembly is arranged on the rear side of the volute and comprises a front side plate and a rear side plate, the front side plate shields the hollow portion, the rear side plate is arranged on the rear side of the front side plate and is limited between the front side plate and the rear side plate to form a cavity, the front side plate is provided with a plurality of through holes communicated to the cavity, and a sound absorption layer is arranged in the cavity. Because the perforation of the front side plate is thin and dense, the sound resistance is large, the sound quality is small, the ratio of the sound resistance to the sound quality is greatly improved, and the broadband sound absorption capacity can be realized, thereby effectively reducing the BPF noise of the fan and the vortex noise of the broadband, and improving the noise quality.
Description
Technical Field
The utility model relates to the technical field of air conditioners, in particular to an air conditioner indoor unit.
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 modes mainly comprise the following two modes, wherein the first mode is to reduce the airflow strength by reducing the rotating speed of a fan so as to achieve the purpose of noise reduction; the second is to optimize the shape of the fan blade to form a more stable airflow to achieve the purpose of noise reduction. However, the air output of the indoor unit of the air conditioner can be reduced by reducing the noise reduction mode of the rotating speed of the fan, so that the user experience is influenced; optimizing the shape of the fan blades results in increased manufacturing cost and limited noise reduction effect. Therefore, a method for simply and effectively reducing the noise of the air-conditioning indoor unit is sought, the aim of the mute operation of the air-conditioning indoor unit is achieved, and the method has important significance for developing a new air-conditioning market and consolidating the existing market.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of poor noise reduction effect of the existing air-conditioning indoor unit, and provides an air-conditioning indoor unit, which comprises:
the spiral case is provided with an accommodating groove on the front side, and a hollow part communicated with the accommodating groove on the rear side;
the fan is arranged in the accommodating groove; and
the sound absorption assembly is arranged on the rear side of the volute and comprises a front side plate and a rear side plate, the front side plate shields the hollow portion, the rear side plate is arranged on the rear side of the front side plate and is limited between the front side plate and the rear side plate to form a cavity, the front side plate is provided with a plurality of through holes communicated to the through holes of the cavity, and a sound absorption layer is arranged in the cavity.
In some embodiments, the perforation rate on the front side panel is 0.1% to 5%.
In some embodiments, the perforations have a pore size of 0.1mm to 5 mm.
In some embodiments, the front side plate has a thickness of 0.1 to 3 mm.
In some embodiments, the sound absorbing layer is a polyurethane foam layer or a metal foam layer.
In some embodiments, the front side plate is a circular arc plate adapted to the shape of the rear side of the volute.
In some embodiments, the rear side plate is a circular arc plate arranged in parallel with the front side plate, and a coaming plate is connected between a side edge of the front side plate and a side edge of the rear side plate.
In some embodiments, the rear side panel has a crescent-shaped cross section, and the side edge of the rear side panel is connected to the rear side of the front side panel.
In some embodiments, one side of the rear side plate facing the front side plate is provided with a mounting groove, the front side plate is embedded in the opening of the mounting groove to enclose the cavity, and the sound absorption material is filled in the mounting groove.
In some embodiments, further comprising:
the heat exchanger cover is arranged on the front side of the volute, an air channel is formed by enclosing the heat exchanger and the volute, and the fan is located in the air channel.
Compared with the prior art, the air conditioner indoor unit has the beneficial effects that:
the front side plate is provided with a plurality of perforated structures, so that the front side plate is of a microporous plate structure, and the microporous plate sound absorption 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; meanwhile, a cavity for arranging a sound absorption layer is reserved on the rear side of the front side plate, and the sound absorption layer is used for absorbing noise to improve the noise reduction effect. Because the perforation of preceding curb plate is thin and close, the acoustic resistance is bigger, and the sound quality is less, and the ratio of acoustic resistance and sound quality improves greatly, can realize broadband sound absorbing capacity to effectively reduced the BPF noise of fan and the vortex noise of wide band, improved the noise quality, promoted air conditioner user's use greatly and experienced the comfort level, thereby improve the market competitiveness of the product.
Drawings
Fig. 1 is a schematic structural view of an indoor unit of an air conditioner according to embodiment 1 of the present invention;
fig. 2 is a side view of an indoor unit of an air conditioner according to embodiment 1 of the present invention;
fig. 3 is a side view of the air conditioning indoor unit of fig. 2 with a sound absorbing material layer filled in the cavity;
FIG. 4 is a schematic disassembled view of a sound absorbing assembly of example 1 of the present invention;
FIG. 5 is a schematic diagram of the structure of a volute of some embodiments of the present invention;
fig. 6 is a side view of an indoor unit of an air conditioner according to embodiment 2 of the present invention;
fig. 7 is a side view of the air conditioning indoor unit of fig. 6 with a sound absorbing material layer filled in the cavity;
in the figure, the position of the upper end of the main shaft,
1. a volute; 11. accommodating grooves; 12. a hollow-out section; 13. an air outlet;
2. a heat exchanger;
3. a fan;
4. a sound absorbing assembly; 41. a front side plate; 411. perforating; 42. a rear side plate; 421. mounting grooves; 43. a cavity; 44. a sound absorbing material; 45. enclosing plates;
10. an air duct.
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.
Example 1
Referring to fig. 1 to 5, an embodiment 1 of the present invention provides an indoor unit of an air conditioner, including a spiral casing 1, a fan 3, and a sound absorption assembly 4, wherein an accommodating groove 11 is formed at a front side of the spiral casing 1, and a hollow portion 12 communicated with the accommodating groove 11 is formed at a rear side of the spiral casing 1; the fan 3 is arranged in the accommodating groove 11; the sound absorption assembly 4 is arranged on the rear side of the volute 1, the sound absorption assembly 4 comprises a front side plate 41 and a rear side plate 42, the front side plate 41 shields the hollow part 12, the rear side plate 42 is arranged on the rear side of the front side plate 41 and is limited with the front side plate 41 to form a cavity 43, the front side plate 41 is provided with a plurality of through holes 411 communicated to the cavity 43, and a sound absorption layer 44 is arranged in the cavity 43.
Based on the structure, the front side plate 41 is provided with a plurality of perforated structures, so that the front side plate 41 is of a microporous plate structure, and the microporous plate sound absorption 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; meanwhile, a cavity 43 for arranging a sound absorption layer 44 is reserved on the rear side of the front side plate 41, and the sound absorption layer 44 is used for absorbing noise to improve the noise reduction effect. Because the perforation 411 of the front side plate 41 is thin and dense, the sound resistance is large, the sound quality is small, the ratio of the sound resistance to the sound quality is greatly improved, and the broadband sound absorption capacity can be realized, thereby effectively reducing the BPF noise of the fan 3 and the vortex noise of the broadband, improving the noise quality, greatly improving the use experience comfort level of air conditioner users, and improving the market competitiveness of products.
In some embodiments of the present invention, the perforation rate of the front side plate 41 is 0.1% to 5%, for example, 0.1%, 0.5%, 1%, 2%, 3%, 4%, 5%, etc., and the noise reduction effect is achieved by controlling the perforation rate of the front side plate 41 to increase the consumption effect of air on sound energy when sound waves pass through the perforations 411.
Theoretically, the smaller the aperture of the through hole 411 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 processing difficulty is higher, and the processing cost is increased; if the aperture of the through hole 411 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 411 of the embodiments of the present invention is 0.1mm to 5mm, such as 0.1mm, 0.5mm, 1mm, 3mm, 5mm, etc., which facilitates the processing of the front plate 41 and simultaneously achieves an effective noise reduction effect.
In some embodiments of the present invention, the thickness of the front panel 41 is 0.1 to 3mm, such as 0.1mm, 0.5mm, 1mm, 2mm, 3mm, etc.
In some embodiments of the present invention, the sound absorption layer 44 is a layered structure made of porous sound absorption material, for example, the sound absorption layer 44 may be a polyurethane foam layer or a metal foam layer, and the sound energy is further consumed by using the pores of the sound absorption layer 44 to improve the noise reduction effect.
Referring to fig. 1 to 4, in the embodiment 1, in order to optimize the internal space of the indoor unit of an air conditioner, the front side plate 41 is an arc plate adapted to the shape of the rear side of the scroll casing 1, so that the front side plate 41 can be attached to the rear side of the scroll casing 1.
Further, referring to fig. 2-4, in some embodiments of this embodiment 1, the rear side plate 42 is a circular arc plate disposed parallel to the front side plate 41, and a surrounding plate 45 is connected between a side edge of the front side plate 41 and a side edge of the rear side plate 42.
As a connection manner of the front plate 41 and the rear plate 42, please refer to fig. 4, a mounting groove 421 is opened on one side of the rear plate 42 facing the front plate 41, the front plate 41 is embedded in the opening of the mounting groove 421 to enclose the cavity 43, and the sound absorption layer 44 is disposed in the mounting groove 421, for example, the sound absorption layer fills the mounting groove 421. It can be understood that the sound absorption layer 44 is first disposed in the mounting groove 421, and then the front plate 41 is embedded in the opening of the mounting groove 421 by gluing or fastening.
In some embodiments of this embodiment 1, referring to fig. 1 to 3, the air-conditioning indoor unit according to the embodiment of the present invention further includes a heat exchanger 2, the heat exchanger 2 is covered on the front side of the volute 1, the heat exchanger 2 and the volute 1 enclose to form an air duct 10, and the fan 3 is located in the air duct 10. Wherein the fan 3 is a cross flow fan 3 according to a generally existing conventional design.
To sum up, the embodiment of the present invention provides an indoor unit of an air conditioner, wherein a plurality of perforated structures are arranged on a front side plate 41, so that the front side plate 41 is a micro-porous plate structure, and the micro-porous plate sound absorption 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; meanwhile, a cavity 43 for arranging a sound absorption layer 44 is reserved on the rear side of the front side plate 41, and the sound absorption layer 44 is used for absorbing noise to improve the noise reduction effect. Because the perforation 411 of the front side plate 41 is thin and dense, the sound resistance is large, the sound quality is small, the ratio of the sound resistance to the sound quality is greatly improved, and the broadband sound absorption capacity can be realized, thereby effectively reducing the BPF noise of the fan 3 and the vortex noise of the broadband, improving the noise quality, greatly improving the use experience comfort level of air conditioner users, and improving the market competitiveness of products.
Example 2
Referring to fig. 6 to 7, an embodiment 2 of the present invention discloses an air conditioning indoor unit, which has a structure similar to that of the air conditioning indoor unit of embodiment 1, and is different in the specific shape of the sound absorption assembly 4.
In some embodiments of this embodiment 2, the cross section of the rear side plate 42 is crescent-shaped, and the side edge of the rear side plate 42 is connected to the rear side of the front side plate 41. The rear side plate 42 of this embodiment 2 adopts the crescent shape to enable the sound absorbing component 4 and the connecting installation position of the volute 1 to avoid the appearance of sudden change cross section, thereby further reducing the wind resistance and reducing the loss of wind volume.
Please refer to embodiment 1 above for other structures of the air conditioning indoor unit of embodiment 2, and descriptions thereof are omitted here.
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 (10)
1. An indoor unit of an air conditioner, comprising:
the spiral case is provided with an accommodating groove on the front side, and a hollow part communicated with the accommodating groove on the rear side;
the fan is arranged in the accommodating groove; and
the sound absorption assembly is arranged on the rear side of the volute and comprises a front side plate and a rear side plate, the front side plate shields the hollow portion, the rear side plate is arranged on the rear side of the front side plate and is limited between the front side plate and the rear side plate to form a cavity, the front side plate is provided with a plurality of through holes communicated to the through holes of the cavity, and a sound absorption layer is arranged in the cavity.
2. An indoor unit for an air conditioner according to claim 1, wherein the perforation rate of the front plate is 0.1% to 5%.
3. An indoor unit of an air conditioner according to claim 1, wherein the diameter of the perforation is 0.1mm to 5 mm.
4. An indoor unit of an air conditioner according to claim 1, wherein the front side plate has a thickness of 0.1 to 3 mm.
5. The indoor unit of an air conditioner according to claim 1, wherein the sound absorption layer is a polyurethane foam cotton layer or a foam metal layer.
6. An indoor unit of an air conditioner according to claim 1, wherein the front side plate is a circular arc plate adapted to the shape of the rear side of the scroll casing.
7. An indoor unit for an air conditioner according to claim 6, wherein the rear side plate is a circular arc plate provided in parallel with the front side plate, and a skirt is connected between a side edge of the front side plate and a side edge of the rear side plate.
8. An indoor unit of an air conditioner according to claim 6, wherein the rear side plate has a crescent-shaped cross section, and a side edge of the rear side plate is connected to a rear side of the front side plate.
9. An indoor unit of an air conditioner according to any one of claims 6 to 8, wherein a mounting groove is formed at a side of the rear side plate facing the front side plate, the front side plate is fitted into the opening of the mounting groove to surround the cavity, and the sound absorbing material is filled in the mounting groove.
10. The indoor unit of an air conditioner according to claim 1, further comprising:
the heat exchanger cover is arranged on the front side of the volute, an air channel is formed by enclosing the heat exchanger and the volute, and the fan is located in the air channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121434278.1U CN215372683U (en) | 2021-06-25 | 2021-06-25 | Air conditioner indoor unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121434278.1U CN215372683U (en) | 2021-06-25 | 2021-06-25 | Air conditioner indoor unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215372683U true CN215372683U (en) | 2021-12-31 |
Family
ID=79605437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121434278.1U Active CN215372683U (en) | 2021-06-25 | 2021-06-25 | Air conditioner indoor unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215372683U (en) |
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2021
- 2021-06-25 CN CN202121434278.1U patent/CN215372683U/en active Active
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