CN219346634U - Air supply assembly and air conditioner - Google Patents

Abstract

The utility model discloses an air supply assembly and an air conditioner, wherein the air supply assembly comprises a volute and a centrifugal fan blade, the centrifugal fan blade is rotatably connected to the volute, the centrifugal fan blade is provided with a first partition plate, an air inlet plate and a baffle plate, the first partition plate is connected to the centrifugal fan blade and divides the internal space of the centrifugal fan blade into a first air inlet cavity and a second air inlet cavity, the air inlet plate is connected to the centrifugal fan blade, the air inlet plate and the first partition plate are distributed at intervals along the axial direction of the centrifugal fan blade, a plurality of first micropores are formed in the air inlet plate, the baffle plate is arranged between the first partition plate and the air inlet plate to define a plurality of first silencing cavities between the first partition plate and the air inlet plate, and the first silencing cavities are communicated with the first micropores. The air supply assembly is based on the Helmholtz noise reduction principle, and through the arrangement of the first silencing cavity, pneumatic noise and resonance noise enter the silencing cavity through the micropores to be absorbed by the silencing cavity, so that noise generated by the air supply assembly is reduced.

Description

Air supply assembly and air conditioner

Technical Field

The utility model relates to the technical field of air conditioners, in particular to an air supply assembly and an air conditioner.

Background

Along with the improvement of living standard, people have higher and higher requirements on air conditioning noise, especially noise generated by an air duct of an internal machine, so that user experience of people in the process of using the air conditioner is greatly influenced.

In the related art, the cabinet air conditioner introduces indoor air into the cabinet air conditioner through the motor-driven bidirectional centrifugal fan blades, and then air is supplied through the spiral cases arranged on the two sides of the centrifugal fan blades, but in the air supply process, not only is the pneumatic noise of an air duct exist, but also structural member resonance noise is easily generated under the excitation effect of the motor.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent.

It is therefore an object of the present utility model to provide an air supply assembly that reduces noise generated during air supply.

The utility model further provides an air conditioner with the air supply assembly.

The air supply assembly comprises a volute and centrifugal fan blades, wherein the centrifugal fan blades are rotatably connected to the volute, the centrifugal fan blades are provided with a first partition plate, an air inlet plate and a baffle, the first partition plate is connected into the centrifugal fan blades and divides the inner space of the centrifugal fan blades into a first air inlet cavity and a second air inlet cavity, the air inlet plate is connected into the centrifugal fan blades, the air inlet plate and the first partition plate are distributed at intervals along the axial direction of the centrifugal fan blades, a plurality of first micropores are formed in the air inlet plate, and the baffle is arranged between the first partition plate and the air inlet plate to define a plurality of first silencing cavities therebetween and communicated with the first micropores.

The air supply assembly provided by the embodiment of the utility model is based on the Helmholtz noise reduction principle, and the arrangement of the first silencing cavity enables the pneumatic noise and the resonance noise to enter the silencing cavity through the micropores and be absorbed by the silencing cavity, so that the noise generated by the air supply assembly is reduced.

In some embodiments, the baffle has a plurality of baffles, a plurality of baffles are annular and a plurality of baffles are concentrically arranged, the first baffle, the air inlet plate and a plurality of baffles define a plurality of first silencing cavities, the first micropores are divided into a plurality of first micropore groups, the first micropore groups comprise a plurality of first micropores which are circularly arranged, and a plurality of first micropore groups are communicated with a plurality of first silencing cavities in a one-to-one correspondence manner.

In some embodiments, the air inlet plate comprises a first air inlet plate and a second air inlet plate, the baffle comprises a first baffle and a second baffle, the first air inlet plate, the first baffle, the second baffle and the second air inlet plate are sequentially arranged at intervals along the axial direction of the centrifugal fan blade, the first micropore on the first baffle is communicated with the first air inlet cavity and the first silencing cavity, and the first micropore on the second baffle is communicated with the second air inlet cavity and the first silencing cavity.

In some embodiments, the volumes of the plurality of first sound attenuation cavities are all different.

In some embodiments, the volute has a third air inlet plate, a second baffle plate, and a third baffle plate, the third baffle plate is located between the third air inlet plate and the second baffle plate to define a plurality of second silencing cavities, and a plurality of second micropores are formed in the third air inlet plate and are communicated with the second silencing cavities.

In some embodiments, the volute further comprises a third baffle and a fourth baffle, the fourth baffle is located between the third baffle and the fourth baffle to define a plurality of third silencing cavities, a plurality of third micropores are formed in the second baffle, and the third micropores are communicated with the second silencing cavities and the third silencing cavities.

In some embodiments, the third baffle and the fourth baffle are all multiple, and multiple third baffles and multiple fourth baffles are all distributed along the width direction of the third air inlet plate at intervals, the third air inlet plate, the second partition plate and two adjacent third baffles define a second silencing cavity, multiple rows of second micropores are in one-to-one correspondence with multiple second silencing cavities, the second micropores are in communication with the corresponding second silencing cavities, multiple rows of third micropores are in one-to-one correspondence with multiple second silencing cavities, and the third micropores are in communication with the corresponding third silencing cavities.

In some embodiments, the pore size of the second microwell is greater than the pore size of the third microwell.

In some embodiments, the second and third sound-deadening chambers are the same in number, and the third micro-hole communicates the corresponding second and third sound-deadening chambers.

An air conditioner according to a second aspect of the present utility model includes the air supply assembly according to any one of the above embodiments.

By adopting the air supply assembly, the air conditioner provided by the embodiment of the utility model enables the pneumatic noise and the resonance noise to enter the silencing cavity through the micropores and be absorbed by the silencing cavity, so that the noise generated by the air supply assembly is reduced.

Drawings

Fig. 1 is a schematic view of a centrifugal fan blade according to an embodiment of the utility model.

Fig. 2 is an exploded view of a centrifugal fan blade according to an embodiment of the present utility model.

Fig. 3 is a cross-sectional view of a centrifugal fan blade according to an embodiment of the utility model.

Fig. 4 is an enlarged view of a portion of fig. 3 in accordance with the present utility model.

Fig. 5 is a schematic view of a volute of an embodiment of the utility model.

Fig. 6 is a cross-sectional view of a volute of an embodiment of the utility model.

Fig. 7 is a partial enlarged view b of fig. 6 according to the present utility model.

Fig. 8 is a schematic diagram of an air supply assembly of the present utility model.

Reference numerals:

a volute 1; a third air inlet plate 11; a second separator 12; a third baffle 13; a second sound deadening chamber 14; a second microwell 15; a third separator 16; a fourth baffle 17; a third sound deadening chamber 18; a third microwell 19;

centrifugal fan blades 2; a first separator 21; an air inlet plate 22; a first air inlet plate 221; a second air inlet plate 222; a baffle 23; a first baffle 231; a second shutter 232; a first air intake chamber 24; a second air inlet chamber 25; a first microwell 26; a first sound attenuation chamber 27.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

An air supply assembly according to an embodiment of the present utility model is described below with reference to the accompanying drawings.

As shown in fig. 1 to 7, the air supply assembly according to the embodiment of the present utility model includes a volute 1 and a centrifugal fan blade 2.

The centrifugal fan blade 2 is rotatably connected to the volute 1, the centrifugal fan blade 2 is provided with a first partition plate 21, an air inlet plate 22 and a baffle plate 23, the first partition plate 21 is connected to the centrifugal fan blade 2 and divides the inner space of the centrifugal fan blade 2 into a first air inlet cavity 24 and a second air inlet cavity 25, the air inlet plate 22 is connected to the centrifugal fan blade 2, the air inlet plate 22 and the first partition plate 21 are distributed along the axial interval of the centrifugal fan blade 2, a plurality of first micropores 26 are formed in the air inlet plate 22, the baffle plate 23 is arranged between the first partition plate 21 and the air inlet plate 22 to define a plurality of first silencing cavities 27 between the first partition plate 21 and the air inlet plate 22, and the first silencing cavities 27 are communicated with the first micropores 26.

It should be noted that, as shown in fig. 8, the helmholtz noise reduction principle and formula are used

It can be known that, on the premise of setting the diameter d of the neck opening and the depth t of the neck, the cavity volume V of the silencing cavity is set reasonably, so that the resonance frequency f0 is equal to or close to the frequency of the air duct noise, and the air duct noise under the frequency enters the silencing cavity through the micropores to generate resonance so as to be absorbed and consumed, wherein V is the cavity volume of the silencing cavity, c is the sound velocity, r is the neck opening radius of the silencing cavity, t is the depth of the neck of the silencing cavity, d is the neck opening diameter of the silencing cavity, and f0 is the resonance frequency of the silencing cavity and the air duct noise.

The air supply assembly provided by the embodiment of the utility model is based on the Helmholtz noise reduction principle, and the arrangement of the first silencing cavity enables the pneumatic noise and the resonance noise to enter the silencing cavity through the micropores and be absorbed by the silencing cavity, so that the noise generated by the air supply assembly is reduced.

As shown in fig. 2 to 4, further, the plurality of baffles 23 are multiple, the plurality of baffles 23 are all annular, the plurality of baffles 23 are concentrically arranged, the first baffle 21, the air inlet plate 22 and the plurality of baffles 23 define a plurality of first silencing cavities 27, the first micropores 26 are divided into a plurality of first micropore groups, the first micropore groups comprise a plurality of first micropores 26 which are circularly arranged, and the plurality of first micropore groups are communicated with the plurality of first silencing cavities 27 in a one-to-one correspondence manner.

Alternatively, the plurality of baffles 23 are polygonal, and the plurality of baffles 23 are concentrically arranged, and the first partition 21, the air inlet plate 22 and the plurality of baffles 23 define a plurality of first silencing cavities 27, and the first micropores 26 are divided into a plurality of first micropore groups, each including a plurality of first micropores 26 arranged along the circumferential direction of the baffle 23, and the plurality of first micropore groups are in one-to-one communication with the plurality of first silencing cavities 27.

Thus, in these embodiments, the air supply assembly of the present embodiment defines the plurality of first silencing cavities 27 by the plurality of baffles 23, and correspondingly communicates the first micro-holes 26 with the first silencing cavities 27, so as to facilitate the design of the sizes and shapes of the first micro-holes 26 and the baffles 23.

As shown in fig. 2 to 4, in some embodiments, the air inlet plate 22 includes a first air inlet plate 221 and a second air inlet plate 222, the baffle 23 includes a first baffle 231 and a second baffle 232, the first air inlet plate 221, the first baffle 231, the first partition 21, the second baffle 232 and the second air inlet plate 222 are sequentially arranged at intervals along the axial direction of the centrifugal fan blade 2, the first micro-holes 26 on the first baffle 231 are communicated with the first air inlet cavity 24 and the first silencing cavity 27, and the first micro-holes 26 on the second baffle 232 are communicated with the second air inlet cavity 25 and the first silencing cavity 27. In other words, the first air inlet plate 221 and the first baffle 231 are positioned at the first side of the first partition 21, the first muffling chamber 27 defined by the first air inlet plate 221, the first baffle 231 and the first partition 21 is positioned at the first side of the first partition 21 to absorb noise of the first side of the first partition 21, the second air inlet plate 222 and the second baffle 232 are positioned at the second side of the first partition 21, and the first muffling chamber 27 defined by the second air inlet plate 222, the second baffle 232 and the first partition 21 is positioned at the second side of the first partition 21 to absorb noise of the second side of the first partition 21.

Thus, in these embodiments, the air supply assembly according to the embodiment of the present utility model is provided with the first silencing cavities 27 on both sides of the first partition 21, so that the noise on both sides of the first partition 21 is absorbed by the first silencing cavities 27, and the effect of the first silencing cavities 27 on absorbing the noise is further improved to reduce the noise generated by the air supply assembly.

As shown in fig. 2-4, in some embodiments, the volumes of the plurality of first sound attenuation chambers 27 are all different. According to the Helmholtz noise reduction principle and the formula, on the premise that the diameter d of the neck opening and the depth t of the neck are set, a plurality of silencing cavities with different volumes are arranged, so that a plurality of first silencing cavities can absorb noise with different frequencies. Therefore, in the embodiments, the air supply assembly of the embodiment of the utility model absorbs the noise with different frequencies by arranging the first silencing cavities with different volumes, so that the noise absorption effect of the first silencing cavities is further improved to reduce the noise generated by the air supply assembly.

As shown in fig. 5 to 7, in some embodiments, the volute 1 has a third air intake plate 11, a second partition 12, and a third baffle 13, the third baffle 13 being located between the third air intake plate 11 and the second partition 12 to define a plurality of second muffling chambers 14, the third air intake plate 11 being provided with a plurality of second micro-holes 15, the second micro-holes 15 being in communication with the second muffling chambers 14. Therefore, in these embodiments, the air supply assembly of the embodiment of the present utility model absorbs the noise at the air outlet of the volute 1 through the arrangement of the second silencing cavity 14, so as to reduce the noise at the air outlet of the air duct.

As shown in fig. 6 and 7, in some embodiments, the volute 1 further includes a third baffle 16 and a fourth baffle 17, the fourth baffle 17 being positioned between the third baffle 16 and the second baffle 12 to define a plurality of third muffling chambers 18, the second baffle 12 having a plurality of third micro-holes 19, the third micro-holes 19 communicating with the second muffling chambers 14 and 18.

Therefore, in these embodiments, the air supply assembly according to the embodiment of the present utility model is provided with the third silencing cavity 18, so that the duct noise with different frequencies generates resonance when passing through the second micro-hole 15 and the second silencing cavity 14, and is primarily absorbed, and then the duct noise generates resonance when passing through the third micro-hole 19 and the third silencing cavity 18, and is deeply absorbed, so that the absorption of the noise at the air outlet of the volute 1 is further improved.

In some embodiments, the third baffle 13 and the fourth baffle 17 are multiple, and the multiple third baffles 13 and the multiple fourth baffles 17 are all distributed at intervals along the width direction of the third air inlet plate 11, the second partition plate 12 and two adjacent third baffles 13 define a second silencing cavity 14, the second micropores 15 are multiple, multiple rows of the second micropores 15 are in one-to-one correspondence with the multiple second silencing cavities 14, the second micropores 15 are in communication with the corresponding second silencing cavities 14, multiple rows of the third micropores 19 are multiple, multiple rows of the third micropores 19 are in one-to-one correspondence with the multiple second silencing cavities 14, and the third micropores 19 are in communication with the corresponding third silencing cavities 18.

Further, the distance between the adjacent two third baffles 13 gradually increases in the width direction of the third air intake plate 11, and the distance between the adjacent two fourth baffles 17 gradually increases in the width direction of the third air intake plate 11.

Therefore, in these embodiments, the air supply assembly according to the present utility model further improves the effect of absorbing noise with different frequencies by adjusting the distance between two adjacent third baffles 13 (fourth baffles 17) so as to change the volume of the second silencing chamber 14 (third silencing chamber 18).

In some embodiments, the aperture of the second micro-hole 15 is larger than the aperture of the third micro-hole 19, so that the second silencing cavity 14 and the third silencing cavity 18 absorb noise with different frequencies, and the effect of absorbing noise at the air outlet is improved.

In some embodiments, the second sound-deadening chambers 14 are the same number as the third sound-deadening chambers 18, and the third micro-holes 19 communicate with the corresponding second sound-deadening chambers 14 and third sound-deadening chambers 18.

An air conditioner according to a second aspect of the present utility model includes the air supply assembly of any one of the embodiments described above.

By adopting the air supply assembly, the air conditioner provided by the embodiment of the utility model enables the pneumatic noise and the resonance noise to enter the silencing cavity through the micropores and be absorbed by the silencing cavity, so that the noise generated by the air supply assembly is reduced.

In the description of the present utility model, it should 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", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., 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, schematic representations of the above terms are not necessarily directed 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. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While the above embodiments have been shown and described, it should be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the utility model.

Claims (10)

1. The air supply assembly is characterized by comprising a volute and a centrifugal fan blade, wherein the centrifugal fan blade is rotatably connected to the volute;

the centrifugal fan blade is provided with a first partition plate, an air inlet plate and a baffle, the first partition plate is connected in the centrifugal fan blade and divides the inner space of the centrifugal fan blade into a first air inlet cavity and a second air inlet cavity, the air inlet plate is connected in the centrifugal fan blade, the air inlet plate and the first partition plate are distributed along the axial interval of the centrifugal fan blade, a plurality of first micropores are formed in the air inlet plate, and the baffle is arranged between the first partition plate and the air inlet plate so as to define a plurality of first silencing cavities between the first partition plate and the air inlet plate, and the first silencing cavities are communicated with the first micropores.

2. The air supply assembly of claim 1 wherein said plurality of baffles are annular and said plurality of baffles are concentrically arranged, said first baffle, said air inlet plate and said plurality of baffles define a plurality of said first sound attenuation chambers, said first plurality of apertures being divided into a plurality of first plurality of groups of apertures, said first plurality of groups of apertures including a plurality of first plurality of apertures arranged in a circular configuration, said plurality of first plurality of groups of apertures being in one-to-one communication with said plurality of first sound attenuation chambers.

3. The air supply assembly of claim 1, wherein the air inlet plate comprises a first air inlet plate and a second air inlet plate, the baffle comprises a first baffle and a second baffle, the first air inlet plate, the first baffle, the second baffle and the second air inlet plate are sequentially arranged at intervals along the axial direction of the centrifugal fan blade, the first micropore on the first baffle is communicated with the first air inlet cavity and the first silencing cavity, and the first micropore on the second baffle is communicated with the second air inlet cavity and the first silencing cavity.

4. The air supply assembly of claim 1 wherein the volumes of the plurality of first sound attenuation chambers are all different.

5. The air supply assembly of claim 1 wherein the volute has a third air inlet plate, a second baffle and a third baffle, the third baffle being positioned between the third air inlet plate and the second baffle to define a plurality of second sound attenuation chambers, the third air inlet plate having a plurality of second micro-holes therein, the second micro-holes in communication with the second sound attenuation chambers.

6. The air supply assembly of claim 5 wherein the volute further comprises a third baffle and a fourth baffle, the fourth baffle being positioned between the third baffle and the second baffle to define a plurality of third sound attenuation chambers, the second baffle having a plurality of third micro-holes thereon, the third micro-holes communicating the second sound attenuation chambers with the third sound attenuation chambers.

7. The air supply assembly of claim 6, wherein the third baffle and the fourth baffle are each plural, and the plural third baffles and the plural fourth baffles are each spaced apart along the width direction of the third air intake plate, the second partition plate, and two adjacent third baffles define a second silencing chamber, the second micropores are plural in rows and are in one-to-one correspondence with the plural second silencing chambers, the second micropores are in communication with the plural second silencing chambers, the third micropores are plural in rows and are in one-to-one correspondence with the plural second silencing chambers, and the third micropores are in communication with the plural third silencing chambers.

8. The air supply assembly of claim 6 wherein the aperture of the second aperture is larger than the aperture of the third aperture.

9. The air supply assembly of claim 6 wherein the second and third sound attenuation chambers are the same in number and the third micro-holes communicate with the corresponding second and third sound attenuation chambers.

10. An air conditioner comprising the air supply assembly of any one of claims 1-9.

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