阅读说明：本技术 消音器、压缩机和空调器 (Silencer, compressor and air conditioner ) 是由 丁少鹏 史正良 刘鹏飞 关蕴奇 于 2019-10-24 设计创作，主要内容包括：本申请提供一种消音器、压缩机和空调器,包括壳体,所述壳体内设置有内腔,所述内腔的侧壁上设置有至少一个消音腔,所述消音腔与所述内腔相通,流经所述内腔的流体能够在所述消音腔内形成涡旋。本发明的实施例中所提供的一种消音器,能够有效削弱气流与壁面间的摩擦阻力,降低运动时表层流体阻力,进而减小气流噪声。(The application provides a muffler, compressor and air conditioner, which comprises a housin, be provided with the inner chamber in the casing, be provided with at least one amortization chamber on the lateral wall of inner chamber, the amortization chamber with the inner chamber communicates with each other, flows through the fluid of inner chamber can form the vortex in the amortization chamber. The silencer provided by the embodiment of the invention can effectively weaken the friction resistance between airflow and a wall surface, reduce the surface fluid resistance during movement and further reduce the airflow noise.)

1. A silencer is characterized by comprising a shell, wherein an inner cavity is formed in the shell, at least one silencing cavity is formed in the side wall of the inner cavity and communicated with the inner cavity, and fluid flowing through the inner cavity can form vortex in the silencing cavity.

2. The muffler according to claim 1, wherein when the muffling chamber is plural, the muffling chamber is uniformly arranged on an inner wall of the housing.

3. A silencer according to claim 1, characterized in that the silencing chambers comprise a first type of silencing chamber (11), the first type of silencing chamber (11) having a hole-shaped structure, a first end of the first type of silencing chamber (11) communicating with the inner chamber, a second end of the first type of silencing chamber (11) extending to a side away from the inner chamber, the first type of silencing chamber (11) being isolated from the outer space of the silencer (1).

4. A silencer according to claim 3, characterized in that the sound-deadening chambers of the first kind (11) are directional holes.

5. A silencer according to claim 3, characterized in that the cavities (11) of the first kind have a hole depth of 5-500 μm and/or the cavities (11) of the first kind have a diameter of 20-1000 μm.

6. A silencer according to claim 3, characterized in that the open area density of the sound-damping chambers of the first type (11) is 0.05-0.5.

7. A silencer according to claim 3, characterized in that the cross-section of the sound-deadening chambers of the first kind (11) is oval and/or triangular and/or diamond-shaped and/or rectangular and/or regular hexagonal.

8. A silencer according to claim 3, characterized in that the axial cross-section of the chambers (11) of the first kind decreases from the opening of the chambers (11) of the first kind to the cross-section of the bottom of the chambers (11) of the first kind.

9. A silencer according to claim 3, characterized in that the bottom of the chamber (11) of the first kind is a cambered surface, the opening of which is directed towards the opening of the chamber (11) of the first kind.

10. A silencer according to claim 3, characterized in that when the first type of chambers (11) is plural, the plural first type of chambers (11) are arranged in a first row and a second row along a first direction;

the first type of silencing cavities (11) in the first column and the first type of silencing cavities (11) in the second column are arranged in one-to-one alignment in the second direction, or a plurality of the first type of silencing cavities (11) in the first column and a plurality of the first type of silencing cavities (11) in the second column are arranged in a staggered mode in the second direction.

11. A silencer according to claim 1, characterized in that the silencer (1) comprises a first opening (13) and a second opening (14), the sound-damping chambers comprising a second type of sound-damping chamber (12), the second type of sound-damping chamber (12) having a channel-shaped structure, a first end of the second type of sound-damping chamber (12) being arranged at the first opening (13), and a second end of the second type of sound-damping chamber (12) extending towards the second opening (14).

12. A silencer according to claim 11, characterized in that the depth of the sound-deadening chambers (12) of the second type is 5 to 500 μm, and/or the width of the sound-deadening chambers (12) of the second type is 20 to 1000 μm, and/or when there are at least two sound-deadening chambers (12) of the second type, the spacing between adjacent sound-deadening chambers (12) of the second type is 100 to 1000 μm.

13. A compressor, characterized by comprising a muffler as claimed in any one of claims 1 to 12.

14. An air conditioner characterized by comprising the silencer according to any one of claims 1 to 12.

Technical Field

The application belongs to the technical field of air conditioning, and particularly relates to a silencer, a compressor and an air conditioner.

Background

The noise of the compressor is a main noise source of the air conditioning system and is also a main factor influencing the stability and the working performance of the whole machine, and the noise of the compressor comprises mechanical noise, electromagnetic noise, airflow noise and the like. In the face of the rapidly developing compressor market, especially in the face of the continuous improvement of the environmental protection requirements of users, the reduction of the noise generated during the operation of the compressor has become a key factor for the performance improvement and the new product development of the compressor. The air flow noise of the prior compressor mainly occurs in an exhaust area, namely the noise formed by the compressed refrigerant exhausted from an air outlet at a high speed. For eliminating the air current noise, mainly adopt at the top installation muffler in the flange gas outlet outside at present, form the amortization chamber to the noise abatement, nevertheless in the current muffler, the air current produces great top layer fluid resistance when the circulation of muffler inner wall, leads to the noise reduction effect relatively poor.

Disclosure of Invention

Therefore, the technical problem to be solved by the present application is to provide a silencer, a compressor and an air conditioner, which can effectively weaken the friction resistance between the airflow and the wall surface, reduce the surface fluid resistance during movement, and further reduce the airflow noise.

In order to solve the problems, the application provides a silencer, which comprises a shell, wherein an inner cavity is arranged in the shell, at least one silencing cavity is arranged on the side wall of the inner cavity, the silencing cavity is communicated with the inner cavity, and fluid flowing through the inner cavity can form vortex in the silencing cavity.

Preferably, when the silencing chamber is a plurality of chambers, the silencing chambers are uniformly arranged on the inner wall of the shell.

Preferably, the muffling cavity comprises a first muffling cavity, the first muffling cavity has a hole-shaped structure, a first end of the first muffling cavity is communicated with the inner cavity, a second end of the first muffling cavity extends to one side far away from the inner cavity, and the first muffling cavity is isolated from the outer space of the muffler.

Preferably, the sound-deadening chambers of the first type are directional orifices.

Preferably, the hole depth of the first type of sound-deadening cavity is 5-500 mu m, and/or the diameter of the first type of sound-deadening cavity is 20-1000 mu m.

Preferably, the open area density of the first type of sound-deadening cavity is 0.05-0.5.

Preferably, the cross section of the first type of sound-deadening chamber is oval and/or triangular and/or rhombic and/or rectangular and/or regular hexagonal.

Preferably, the axial section of the first type of sound-deadening chamber decreases from the opening of the first type of sound-deadening chamber to the cross section of the hole bottom of the first type of sound-deadening chamber.

Preferably, the bottom of the first type of sound-deadening cavity is an arc surface, and an opening of the arc surface faces the opening of the first type of sound-deadening cavity.

Preferably, when a plurality of first type muffling cavities are arranged, the plurality of first type muffling cavities are arranged in a first row and a second row along a first direction;

the first type of sound-deadening cavities in the first column and the first type of sound-deadening cavities in the second column are arranged in one-to-one alignment in the second direction, or a plurality of the first type of sound-deadening cavities in the first column and a plurality of the first type of sound-deadening cavities in the second column are arranged in an interlaced manner in the second direction.

Preferably, the muffler comprises a first opening and a second opening, the sound-deadening chamber comprises a second type sound-deadening chamber, the second type sound-deadening chamber has a groove-shaped structure, a first end of the second type sound-deadening chamber is arranged at the first opening, and a second end of the second type sound-deadening chamber extends towards the second opening.

Preferably, the depth of the second-type silencing cavities is 5-500 mu m, the width of the second-type silencing cavities is 20-1000 mu m, and/or when the number of the second-type silencing cavities is at least two, the distance between every two adjacent second-type silencing cavities is 100-1000 mu m.

In another aspect of the present invention, there is provided a compressor comprising the above-mentioned muffler.

In another aspect of the present invention, an air conditioner is provided, which includes the above-mentioned silencer.

Advantageous effects

The silencer provided by the embodiment of the invention can effectively weaken the friction resistance between airflow and a wall surface, reduce the surface fluid resistance during movement and further reduce the airflow noise.

Drawings

Fig. 1 is a first perspective view of embodiment 1 of the present application;

fig. 2 is a second perspective view of embodiment 1 of the present application;

fig. 3 is a partial sectional view of a first muffling chamber of embodiment 1 of the present application;

FIG. 4 is an enlarged fragmentary view of another embodiment of the first muffling chamber of example 1 of the present application;

FIG. 5 is a schematic perspective view of an embodiment of example 2 of the present application;

FIG. 6 is a second partial cross-sectional view of another embodiment of example 2 of the present application;

fig. 7 is a schematic structural diagram of a compressor according to an embodiment of the present application.

The reference numerals are represented as:

1. a muffler; 11. a first type of muffling chamber; 12. a second type of muffling chamber; 13. a first opening; 14. a second opening; 2. and an upper flange.

Detailed Description

Referring to fig. 1 to 4 and 7 in combination, according to embodiment 1 of the present application, a muffler includes a housing, an inner cavity is disposed in the housing, at least one muffling chamber is disposed on a side wall of the inner cavity, the muffling chamber is communicated with the inner cavity, and a fluid flowing through the inner cavity can form a vortex in the muffling chamber. The side wall of the inner cavity is provided with at least one silencing cavity, so that fluid flowing through the inner cavity of the silencer 1 can enter the silencing cavity, a vortex is formed in the silencing cavity, an air cushion effect is formed, the friction resistance between air flow and the wall surface can be effectively weakened, the surface fluid resistance during movement is reduced, and then the air flow noise is reduced. Meanwhile, the silencing cavity has a strong airflow cutting effect, large vortexes are cut and microscopic vortexes are generated in the silencing cavity, the formation and the flow of the large vortexes are weakened, the tendency that the large vortexes are separated from the wall surface is restrained, the formation of the large vortexes is effectively restrained, and the generation of airflow noise is effectively reduced. In addition, the surface area of the inner wall is increased by arranging the sound attenuation cavity, the reflection effect of the wall surface on sound waves is improved, and the sound insulation effect is enhanced.

Furthermore, the silencing cavity is not communicated with the outer space of the silencer 1, and the silencing cavity is only communicated with the inner cavity, so that the gas passing through the inner cavity is ensured not to flow out of the silencer 1 through the silencing cavity.

Further, in this embodiment, the silencing chamber is provided on the inner wall of the housing, and as another embodiment, when the lining is provided on the inner wall of the silencer 1, the silencing chamber may also be provided on the lining.

When the amortization chamber is a plurality of, the amortization chamber is evenly arranged on the inner wall of casing, can guarantee the lateral wall of inner chamber in the ascending noise cancelling effect of all directions, also guarantees that the impact force of gas to the lateral wall of inner chamber is the same.

Further, the silencer 1 comprises circumferential side walls and a top wall, and the silencing cavities are evenly distributed on the side walls and the top wall.

The silencing cavity comprises a first type silencing cavity 11, the first type silencing cavity 11 is of a hole-shaped structure, a first end of the first type silencing cavity 11 is communicated with the inner cavity, a second end of the first type silencing cavity 11 extends to one side far away from the inner cavity, and the first type silencing cavity 11 is isolated from the outer space of the silencer 1. By arranging the first type of sound-deadening cavity 11 with the hole-shaped structure, the contact area of the wall surface is increased, the reflection effect of the wall surface on sound waves is improved, and the sound-deadening effect is enhanced. Meanwhile, the first-type silencing cavity 11 has a strong airflow cutting effect, reduces the generation and the flow of large vortexes, inhibits the large vortexes from separating from the inner wall, and reduces the generation of flow noise. Vortex generated inside the first-type silencing cavity 11 has an air cushion effect, and further has the effects of reducing drag and noise. Through setting up first class amortization chamber 11, when not changing original muffler 1 structure and assembly relation, not increasing extra space requirement, reduce compressor air current noise, with low costs and easy realization. Through setting up first class amortization chamber 11, have the compressor model of special requirement to the spatial dimension, can guarantee that noise control reaches the user demand when suitably reducing amortization chamber volume.

Further, the muffling chamber of the first type 11 has a blind hole structure.

Further, the first end of the first type of muffling cavity 11 is an opening with a blind hole structure, and the second end of the first type of muffling cavity 11 is a bottom of the blind hole structure, that is, the opening of the first type of muffling cavity 11 is communicated with the inner cavity, the bottom of the first type of muffling cavity 11 extends to a side far away from the inner cavity, and the first type of muffling cavity 11 is isolated from the external space of the muffler 1.

The muffling chamber of the first type 11 is a directional orifice. By arranging the muffling chamber of the first kind 11 as a directional orifice, the air flow can be directed.

Further, directional holes refer to non-circular holes having a symmetrical structure.

Further, when the directional hole has an axis of symmetry, the axis of symmetry is disposed parallel to the direction of the flow of the air stream as a whole within the cavity. When the directional hole has at least two axes of symmetry, the axis of symmetry in the direction of the longest length of the directional hole is parallel to the direction of the flow of the air stream as a whole within the internal cavity.

Specifically, in the embodiment, the hole depth of the first-class silencing cavity 11 is 5-500 μm, and the diameter of the first-class silencing cavity 11 is 20-1000 μm, so that the frictional resistance between the airflow and the wall surface is effectively weakened, the surface fluid resistance during movement is reduced, and further the airflow noise is reduced.

The opening area density of the first type of silencing cavity 11 is 0.05-0.5, and the noise reduction effect is guaranteed.

Further, the open area density is the ratio of the cross-sectional area of the opening of all the first type muffling chambers 11 to the total area of the inner wall of the muffler 1.

The cross-section of the muffling chamber of the first kind 11 is elliptical and/or triangular and/or rhombic and/or rectangular and/or regular hexagonal.

Specifically, the cross section of the first-type muffling cavity 11 can be several shapes of an ellipse, a triangle, a diamond, a rectangle and a regular hexagon at the same time, or one of the shapes.

Specifically, in the present embodiment, the cross section of the first-type muffling chamber 11 is an ellipse.

As another embodiment of this embodiment, the cross-section of the first type of sound-deadening chamber 11 is a regular hexagon, as shown in fig. 4.

The axial section of the first type of silencing cavity 11 is gradually reduced from the opening of the first type of silencing cavity 11 to the hole bottom section of the first type of silencing cavity 11, so that the cutting effect of the first type of silencing cavity 11 on airflow can be enhanced, and the capability of generating vortex in the first type of silencing cavity 11 is also enhanced.

Further, the axial section of the first type muffling cavity 11 is an isosceles trapezoid, the opening of the first type muffling cavity 11 is a lower bottom of the isosceles trapezoid, the hole bottom of the first type muffling cavity 11 is an upper bottom of the isosceles trapezoid, and the length of the lower bottom is greater than that of the upper bottom.

The hole bottom of the first type of silencing cavity 11 is an arc surface, and the opening of the arc surface faces the opening of the first type of silencing cavity 11, so that the ability of generating vortex in the first type of silencing cavity 11 can be further enhanced.

When the first type of silencing cavities 11 are multiple, the multiple first type of silencing cavities 11 are arranged into a first row and a second row along the first direction; the first-class silencing cavities 11 in the first row and the first-class silencing cavities 11 in the second row are arranged in one-to-one alignment in the second direction, or the plurality of first-class silencing cavities 11 in the first row and the plurality of first-class silencing cavities 11 in the second row are arranged in a staggered mode in the second direction, so that the friction resistance between airflow and a wall surface can be effectively weakened, the surface fluid resistance during movement is reduced, and further the airflow noise is reduced.

Further, the first direction refers to the axial direction of the side wall of the muffler 1, and the second direction refers to the circumferential direction of the side wall of the muffler 1.

Further, the first direction may also refer to a radial direction of the top surface of the muffler 1, and the second direction refers to a circumferential direction of the top surface of the muffler 1.

Specifically, as shown in fig. 1, the first-type muffling chambers 11 are arranged in a plurality of rows along the axial direction; the sound-deadening chambers 11 of the first type in one of the rows are arranged in one-to-one alignment with the sound-deadening chambers 11 of the first type in the other row in the circumferential direction.

Specifically, as shown in fig. 1, the first-type muffling chambers 11 are arranged in a plurality of rows along the axial direction; the sound-attenuating cavities 11 of the first type in one of the rows are arranged staggered in the circumferential direction with respect to the sound-attenuating cavities 11 of the first type in an adjacent row.

In another aspect of the present embodiment, a compressor is provided, which includes the above-mentioned silencer 1.

In another aspect of the present embodiment, an air conditioner is provided, which includes the above-mentioned silencer 1.