阅读说明：本技术 法兰排气结构、泵体组件、压缩机和空调器 (Flange exhaust structure, pump body assembly, compressor and air conditioner ) 是由 郭婷婷 邓丽颖 徐嘉 杨欧翔 刘国良 于 2019-10-24 设计创作，主要内容包括：本申请提供一种法兰排气结构、泵体组件、压缩机和空调器,所述法兰上设置有排气口,所述排气口内套设有嵌套件,所述嵌套件内设置有过流通道,所述嵌套件上设置有至少一个降噪孔,所述降噪孔与所述过流通道相通。本发明的实施例中所提供的一种法兰排气结构,能够在法兰的排气口处形成降噪结构,并且能减小降噪结构的加工难度,提高加工效率。(The application provides a flange exhaust structure, pump body subassembly, compressor and air conditioner, be provided with the gas vent on the flange, the gas vent endotheca is equipped with nested, be provided with in the nested and flow through the passageway, be provided with at least one hole of making an uproar that falls on the nested, fall make an uproar the hole with flow through the passageway and communicate with each other. The flange exhaust structure provided by the embodiment of the invention can form a noise reduction structure at the exhaust port of the flange, reduce the processing difficulty of the noise reduction structure and improve the processing efficiency.)

1. The utility model provides a flange exhaust structure, its characterized in that, be provided with the gas vent on flange (1), the gas vent endotheca is equipped with nested (3), be provided with in nested (3) and flow through passageway (2), be provided with at least one hole (31) of making an uproar that fall on nested (3), fall make an uproar hole (31) with flow through passageway (2) and communicate with each other.

2. A flange exhaust structure according to claim 1, characterized in that at least one noise reducing cavity (11) is provided on the inner wall of the exhaust port and/or the outer wall of the nest, at least one noise reducing cavity (11) being communicable with the flow channel (2) through at least one noise reducing hole (31).

3. A flange exhaust structure according to claim 2, wherein the noise reducing cavities (11) communicate with the noise reducing holes (31) in a one-to-one correspondence.

4. A flange exhaust structure according to claim 2, wherein the noise reduction cavity (11) comprises a first noise reduction cavity, and the noise reduction aperture (31) comprises a first noise reduction aperture, the first noise reduction cavity communicating with the first noise reduction aperture, the first noise reduction cavity being disposed coaxially with the first noise reduction aperture.

5. The flange vent structure according to claim 1, wherein the length of the vent in the direction of the central axis of the vent is h1, and the length of the nest (3) in the direction of the central axis of the vent is h2, h2 > h 1.

6. A flange venting arrangement according to claim 1, wherein the nest (3) is an interference fit with the vent opening or the nest (3) is welded to the inner wall of the vent opening.

7. The flange exhaust structure according to claim 2, characterized in that the inner wall of the noise reduction cavity (11) has a curved surface structure, or the inner wall of the noise reduction cavity (11) encloses a rectangular parallelepiped structure.

8. The flanged venting structure of claim 1, wherein the vent port comprises a flared section (12) and a necked-down section (13), the flared section (12) having a diameter greater than the necked-down section (13), a first stop surface being formed between the flared section (12) and the necked-down section (13), the nest (3) comprising a first section (32) and a second section (33), the first section (32) having an outer diameter greater than an outer diameter of the second section (33), a second stop surface being formed between the first section (32) and the second section (33), the first section (32) being located within the flared section (12), the second section (33) being located within the necked-down section (13), the first stop surface being in contact with the second stop surface.

9. A pump body assembly comprising a flange vent structure according to any one of claims 1 to 8.

10. The pump block assembly according to claim 9, characterized in that it comprises cylinders with a displacement V, the noise reduction chambers (11) having a volume V1, V1 ═ (1% to 3%) V.

11. A compressor, characterized by comprising the flange discharge structure according to any one of claims 1 to 8.

12. An air conditioner characterized by comprising the flange vent structure according to any one of claims 1 to 8.

Technical Field

The application belongs to the technical field of air conditioning, concretely relates to flange exhaust structure, pump body subassembly, compressor and air conditioner.

Background

Noise of a household air conditioner is an important factor affecting the comfort index of residents, and noise generated by a compressor is a main source of noise in an air conditioning system. The noise of the compressor is relatively complex in composition and mainly comprises pneumatic noise, mechanical noise and electromagnetic noise, wherein the pneumatic noise is mainly generated in an exhaust area, the air flow speed at an exhaust port of a flange on an air cylinder is high, the structure of a flow channel is complex, and the interaction of air flow and a solid wall surface is severe, so that the remarkable air flow noise is formed. In the prior art, noise reduction structures such as a resonant cavity are arranged at an exhaust port of an upper flange to reduce noise, but the size of the exhaust port structure is small, so that the resonant cavity is difficult to machine and low in efficiency.

Disclosure of Invention

Therefore, the technical problem that this application will be solved lies in providing a flange exhaust structure, pump body subassembly, compressor and air conditioner, can form the structure of making an uproar that falls in the gas vent department of flange to can reduce the processing degree of difficulty of the structure of making an uproar that falls, improve machining efficiency.

In order to solve the problem, this application provides a flange exhaust structure, be provided with the gas vent on the flange, the gas vent endotheca is equipped with nested, be provided with in the nested and flow through the passageway, it falls the hole of making an uproar to be provided with at least one on the nested, fall the hole with flow through the passageway and communicate with each other.

Preferably, at least one noise reduction cavity is arranged on the inner wall of the exhaust port and/or the outer wall of the nesting piece, and the at least one noise reduction cavity can be communicated with the flow passage through at least one noise reduction hole.

Preferably, the noise reduction cavities are in one-to-one correspondence with the noise reduction holes.

Preferably, the noise reduction cavity comprises a first noise reduction cavity, the noise reduction hole comprises a first noise reduction hole, the first noise reduction cavity is communicated with the first noise reduction hole, and the first noise reduction cavity and the first noise reduction hole are coaxially arranged.

Preferably, the length of the exhaust port in the direction of the central axis of the exhaust port is h1, the length of the nest in the direction of the central axis of the exhaust port is h2, and h2 is greater than h 1.

Preferably, the nest is an interference fit with the exhaust port, or the nest is welded to an inner wall of the exhaust port.

Preferably, the inner wall of the noise reduction cavity has a curved surface structure, or the inner wall of the noise reduction cavity is enclosed into a rectangular parallelepiped structure.

Preferably, the vent includes a flared section and a necked section, the flared section having a diameter greater than the necked section, the flared section and the necked section forming a first stop surface therebetween, the nest including a first section and a second section, the first section having an outer diameter greater than an outer diameter of the second section, the first section and the second section forming a second stop surface therebetween, the first section being located within the flared section, the second section being located within the necked section, the first stop surface being in contact with the second stop surface.

In another aspect of the invention, a pump body assembly is provided, which comprises the flange exhaust structure.

Preferably, the pump body assembly comprises a cylinder, the displacement of the cylinder is V, the volume of the noise reduction cavity is V1, and V1 is (1% -3%) V.

In another aspect of the invention, a compressor is provided, which comprises the flange exhaust structure.

In another aspect of the present invention, an air conditioner is provided, which includes the above flange exhaust structure.

Advantageous effects

The flange exhaust structure provided by the embodiment of the invention can form a noise reduction structure at the exhaust port of the flange, reduce the processing difficulty of the noise reduction structure and improve the processing efficiency.

Drawings

Fig. 1 is a partial sectional view of an exhaust port in embodiment 1 of the present application;

fig. 2 is a partial sectional view of an exhaust port according to embodiment 2 of the present application;

fig. 3 is a partial sectional view of an exhaust port according to embodiment 3 of the present application;

FIG. 4 is a cross-sectional view of the nest of example 3 of the present application;

FIG. 5 is a partial sectional view of an exhaust port in embodiment 4 of the present application;

FIG. 6 is a cross-sectional view of a nest according to example 4 of the present application;

FIG. 7 is a sectional view of an exhaust port in example 4 of the present application;

FIG. 8 is a graph comparing noise data for a resonant cavity with and without a resonant cavity.

The reference numerals are represented as:

1. a flange; 11. a noise reduction cavity; 12. a flared section; 13. a necking section; 2. an overflow channel; 3. nesting; 31. a noise reduction hole; 32. a first stage; 33. a second stage; h1, length of the exhaust port along the direction of the central axis of the exhaust port; h2, length of the nest in the direction of the central axis of the exhaust port; h. the wall thickness of the nest; r, noise reduction hole diameter; v1, noise reduction cavity volume; v, the displacement of the air cylinder; d1, inner diameter of nest in example 3; d2, outer diameter of nest in example 3; d5, inner diameter of the throat section; d6, inner diameter of the flared section; d7, outer diameter of second section; d8, outer diameter of the first section; h3, length of the first segment in the axial direction; h4, length of the second segment in the axial direction.

Detailed Description

Referring to fig. 1 in combination, according to embodiment 1 of the present application, a flange exhaust structure is provided with an exhaust port on a flange 1, the exhaust port is internally sleeved with a nest 3, a flow passage 2 is arranged in the nest 3, the nest 3 is provided with at least one noise reduction hole 31, and the noise reduction hole 31 is communicated with the flow passage 2. Can process nested 3 alone through setting up nested 3 in the gas vent, form and fall the hole 31 of making an uproar, then cup joint nested 3 after will processing in the gas vent, accomplish the equipment of 1 gas vent of flange, process nested 3 alone, reduced the processing degree of difficulty, improve machining efficiency.

Further, the noise reduction holes 31 may be plural, and the plural noise reduction holes 31 may be uniformly provided on the inner wall of the nest 3.

Further, in the present embodiment, the nest 3 is a cylindrical structure, and the noise reduction holes 31 are radially provided on a side wall of the cylindrical structure.

In this embodiment, there are two noise reduction holes 31, and the two noise reduction holes 31 are symmetrically disposed on the inner walls of the two sides of the nest 3.

At least one noise reduction cavity 11 is arranged on the inner wall of the exhaust port and/or the outer wall of the nesting piece, and the at least one noise reduction cavity 11 can be communicated with the flow passage 2 through at least one noise reduction hole 31. Through setting up the chamber 11 of making an uproar of falling, the noise abatement that can be further, simultaneously, fall the chamber 11 of making an uproar and fall the hole 31 of making an uproar and communicate with each other, form the Helmholtz resonant cavity, the Helmholtz resonant cavity has good noise reduction effect, has solved the problem that the compressor noise especially frequency conversion compressor noise exceeds standard under the high frequency condition. When the sound wave is transmitted to the noise reduction hole 31, the exhaust gas generates vibration under the action of sound pressure, a part of sound energy is converted into heat energy to be dissipated through friction damping during vibration, when the frequency of the sound wave is the same as that of the resonant cavity, the vibration speed reaches the maximum, the consumed sound energy is the maximum, and the volume of the consumed sound energy is the maximum.

Further, in the present embodiment, the noise reduction chamber 11 is provided on the inner wall of the exhaust port.

Further, the diameter of the noise reduction hole 31 is smaller than the diameter of the noise reduction chamber 11.

The chamber of making an uproar 11 falls including the first chamber of making an uproar that falls, and the hole of making an uproar 31 falls including the first hole of making an uproar, and the first chamber of making an uproar that falls communicates with each other with the first hole of making an uproar that falls, and the first chamber of making an uproar of falling and the first noise reduction effect of making an uproar hole of falling have further been guaranteed in the first coaxial setting in the first chamber of making an.

The noise reduction cavities 11 are communicated with the noise reduction holes 31 in a one-to-one correspondence mode, so that the noise reduction effect is guaranteed, and meanwhile, the increase of the clearance volume is avoided.

The length of the exhaust port in the direction of the central axis of the exhaust port is h1, the length of the nested piece 3 in the direction of the central axis of the exhaust port is h2, and h2 is more than h1, so that the nested piece 3 is ensured to cover the exhaust port in the exhaust direction, and noise is prevented from being generated when fluid flows through the exhaust port.

Nested 3 and gas vent interference fit, perhaps, nested 3 welds on the inner wall of gas vent, has guaranteed the joint strength of nested 3 and gas vent.

Further, in this embodiment, nested 3 and gas vent interference fit have both guaranteed the joint strength of nested 3 and gas vent, make the connection of nested 3 and gas vent simpler again.

Further, the diameter of the vent hole is d1, the outer diameter of the nest 3 is d2, and d2 > d 1.

In particular, the amount of the solvent to be used,

the inner wall of the noise reduction cavity 11 is enclosed into a cuboid structure, so that the noise reduction cavity 11 is more convenient to process.

In another aspect of the present embodiment, a pump body assembly is provided, which includes the flange venting structure described above.

The pump body subassembly includes the cylinder, and the discharge capacity of cylinder is V, and the volume of making an uproar chamber 11 of making an uproar is V1, and V1 is (1% ~ 3%) V, guarantees to reach good noise reduction effect.

Specifically, h is more than or equal to 0.003m and less than or equal to 0.01m, and r is more than or equal to 0.001m and less than or equal to 0.008 m.

More specifically, the formula for calculating the resonance frequency of the helmholtz resonator is:

r is 0.005m, V1 is 0.000000204m3, h is 0.01m, and fr is 1983 Hz.

As shown in fig. 8, fig. 8 is a comparison graph of noise data of the resonant cavity with and without the resonant cavity under the condition, and it can be known from the graph that the open resonant cavity can reduce the noise value, and significantly reduce the noise after the resonant frequency of 2000Hz, which indicates that the resonant cavity has more obvious effect on the noise after the resonant frequency.

In another aspect of the invention, a compressor is provided, which comprises the flange exhaust structure.

In another aspect of the present invention, an air conditioner is provided, which includes the above flange exhaust structure.