CN220869656U

CN220869656U - Exhaust assembly, cylinder and compressor

Info

Publication number: CN220869656U
Application number: CN202322244150.4U
Authority: CN
Inventors: 邱佳龙; 陈艳春; 单树军
Original assignee: Shanghai Highly Electrical Appliances Co Ltd
Current assignee: Shanghai Highly Electrical Appliances Co Ltd
Priority date: 2023-08-21
Filing date: 2023-08-21
Publication date: 2024-04-30
Anticipated expiration: 2033-08-21

Abstract

The utility model provides an exhaust assembly, a cylinder and a compressor, wherein the exhaust assembly comprises a gas conveying channel and a gas turning channel which are mutually communicated, the gas turning channel is gradually widened along the direction away from the gas conveying channel and forms a gas outlet, the gas outlet is provided with a turning part, the turning part extends out along the direction forming an angle with the axial direction of the gas turning channel, the gas conveying channel is used for blowing gas to the gas turning channel, and the turning part is used for changing the flow direction of part of gas sprayed from the gas outlet. So configured, the direction-changing part is arranged at the air outlet of the air direction-changing channel and extends out along the direction forming an angle with the axial direction of the air direction-changing channel, so that the flow direction of a part of air flow can be changed, the air flow intensity is further weakened, and the noise generated when the high-speed high-pressure air flow is sprayed out from the air outlet is reduced.

Description

Exhaust assembly, cylinder and compressor

Technical Field

The utility model relates to the technical field of compressors, in particular to an exhaust assembly, an air cylinder and a compressor.

Background

The noise sources of the compressor mainly comprise refrigerant airflow noise, electromagnetic noise, mechanical noise and the like, and along with the improvement of the requirements of manufacturers on the silencing of the compressor, the existing noise reduction mode is to design a silencing hole and install a silencer. The silencing hole has the function of a resonance sound absorption structure, gas in the silencing hole is similar to a spring, partial sound energy is converted into heat energy to be consumed due to friction and damping effect when the gas vibrates, corresponding pressure fluctuation becomes more gentle, and airflow noise is reduced; the muffler has the function of reducing the noise of the air flow through the expansion of the muffling chamber to the air flow. The maximum airflow noise of the compressor is that when the high-pressure high-speed airflow is ejected out of the exhaust hole, the two modes have no direct effect on the noise source at the position.

Disclosure of utility model

The utility model aims to provide an exhaust assembly, a cylinder and a compressor, which are used for reducing noise generated when high-pressure high-speed air flow is sprayed out of an exhaust hole.

In order to achieve the above object, the present utility model provides an exhaust assembly comprising: the gas direction-changing device comprises a gas conveying channel and a gas direction-changing channel which are mutually communicated, wherein the gas direction-changing channel is gradually widened along the direction far away from the gas conveying channel and forms a gas outlet, a direction-changing part is arranged at the gas outlet and extends along the direction forming an angle with the axial direction of the gas direction-changing channel, the gas conveying channel is used for blowing gas to the gas direction-changing channel, and the direction-changing part is used for changing the flow direction of partial gas sprayed from the gas outlet.

Optionally, the direction-changing part includes at least two protruding portions, at least two protruding portions are evenly arranged along the circumference of the air outlet.

Optionally, the protruding portion is gradually narrowed along its own axial direction.

Optionally, the inner wall of the turning part is a plane or an arc surface.

Optionally, an included angle between the extending direction of the protruding portion and the axial direction of the gas diversion channel is θ, and θ is more than or equal to 0 ° and less than or equal to 90 °.

Optionally, the exhaust assembly includes two the gas diversion passageway, two the one end of gas diversion passageway with the gas delivery channel intercommunication, the other end is the gas outlet, two the gas outlet is along perpendicular to the axial direction of gas diversion passageway sets up relatively and is provided with respectively diversion portion.

In order to achieve the above object, the present utility model also provides a cylinder comprising: an upper cylinder head, a lower cylinder head, a cylinder block, and an exhaust assembly as described above; the upper cylinder cover and the lower cylinder cover are respectively arranged at two ends of the cylinder body, and the exhaust assembly penetrates through the cylinder body.

Optionally, a first air storage cavity is formed between the upper cylinder cover and the cylinder body, a second air storage cavity is formed between the lower cylinder cover and the cylinder body, and the air diversion channel is communicated with the first air storage cavity and/or the second air storage cavity.

Optionally, the cylinder further includes a connection channel, the connection channel communicates the first air storage cavity and the second air storage cavity, a port of the connection channel, which is close to the first air storage cavity, is provided with the turning part, and the connection channel is used for conveying the gas blown to the second air storage cavity to the first air storage cavity.

In order to achieve the above object, the present utility model also provides a compressor including the cylinder as described above.

In summary, in the exhaust assembly, the cylinder and the compressor provided by the utility model, the exhaust assembly comprises a gas conveying channel and a gas diversion channel which are mutually communicated, the gas diversion channel is gradually widened along the direction far away from the gas conveying channel and forms the gas outlet, the gas outlet is provided with the diversion part, the diversion part extends along the direction forming an angle with the axial direction of the gas diversion channel, the gas conveying channel is used for blowing gas to the gas diversion channel, and the diversion part is used for changing the flow direction of part of gas sprayed from the gas outlet.

So configured, the direction-changing part is arranged at the air outlet of the air direction-changing channel and extends out along the direction forming an angle with the axial direction of the air direction-changing channel, so that the flow direction of a part of air flow can be changed, the air flow intensity is further weakened, and the noise generated when the high-speed high-pressure air flow is sprayed out from the air outlet is reduced.

Drawings

FIG. 1 is a schematic diagram of a prior art cylinder;

fig. 2 is a schematic structural view of a first direction changing portion according to an embodiment of the present utility model;

Fig. 3 is a schematic structural view of a second direction changing portion according to an embodiment of the present utility model;

fig. 4 is a schematic structural view of a third direction changing portion according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of a cylinder of a single exhaust gas compressor provided by an embodiment of the present utility model;

FIG. 6 is a schematic diagram of a cylinder of a dual exhaust compressor according to an embodiment of the present utility model;

fig. 7 is a schematic diagram of a positional relationship of an exhaust assembly according to an embodiment of the present utility model.

Wherein, the explanation of each reference sign is as follows:

1-a gas delivery channel;

2-a gas diversion passage; 21-an air outlet; 22-a direction changing part; 221-a boss;

3-upper cylinder cover; 31-a first air storage chamber;

4-lower cylinder cover; 41-a second air storage chamber;

A 5-connection channel; 6-valve plate; 7-a baffle; 8-connecting piece;

x-axis direction; y-circumferential direction; a-direction of extension.

Detailed Description

The utility model will be described in further detail with reference to the drawings and the specific embodiments thereof in order to make the objects, advantages and features of the utility model more apparent. It should be noted that the drawings are in a very simplified form and are not drawn to scale, merely for convenience and clarity in aiding in the description of embodiments of the utility model. Furthermore, the structures shown in the drawings are often part of actual structures. In particular, the drawings are shown with different emphasis instead being placed upon illustrating the various embodiments.

As used in this specification, the singular forms "a," "an," and "the" include plural referents, the term "or" is generally used in the sense of comprising "and/or" and the term "several" is generally used in the sense of comprising "at least one," the term "at least two" is generally used in the sense of comprising "two or more," and the term "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying any relative importance or number of technical features indicated. Thus, a feature defining "first," "second," "third," or "third" may explicitly or implicitly include one or at least two such features, with "one end" and "another end" and "proximal end" and "distal end" generally referring to the respective two portions, including not only the endpoints, but also the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, e.g., as being either a fixed connection, a removable connection, or as being integral therewith; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. Furthermore, as used in this specification, an element disposed on another element generally only means that there is a connection, coupling, cooperation or transmission between the two elements, and the connection, coupling, cooperation or transmission between the two elements may be direct or indirect through intermediate elements, and should not be construed as indicating or implying any spatial positional relationship between the two elements, i.e., an element may be in any orientation, such as inside, outside, above, below or on one side of the other element unless the context clearly indicates otherwise. The terms "upper", "lower", "top" and "bottom" are generally relative positional relationships arranged in the direction of gravity; the term "vertical, vertical direction" generally refers to a direction along the force of gravity that is generally perpendicular to the ground, and "horizontal, horizontal direction" generally refers to a direction parallel to the ground; the specific meaning of the above terms in this specification will be understood by those of ordinary skill in the art in view of the specific circumstances.

The following description refers to the accompanying drawings.

The inventors found that in the cylinder of the existing compressor (refer to fig. 1 and 7), the exhaust unit includes the exhaust hole, the valve sheet 6, and the baffle plate 7, wherein the valve sheet 6 covers the air outlet 21 of the exhaust hole, and the baffle plate 7 and the valve sheet 6 are arranged at intervals along the axial direction of the exhaust hole for limiting the displacement of the valve sheet 6 in the axial direction of the exhaust hole. When high-speed high-pressure air flow is sprayed out from the air outlet 21 of the air vent, the valve plate 6 is blown to move along the axial direction of the air vent, and meanwhile, the sprayed air flow continuously blows out the edge of the air outlet 21, so that lip noise is generated; in addition, due to the intensity of the air flow and the positions and shapes of the valve plate 6 and the baffle plate 7, a mixed layer shear layer is formed at the periphery of the air outlet 21, thereby forming mixed noise. Based on this, the present application proposes an exhaust assembly with a direction-changing portion 22 to change the direction of a part of the airflow, so as to reduce the noise generated by the airflow impact. In this embodiment, only the exhaust passages of the upper and lower cylinder heads of the compressor are taken as an example, and it is not meant that the exhaust assembly in this embodiment can be applied only to the upper and lower cylinder heads, and the exhaust assembly can be used in any situation where noise generated by airflow impact needs to be reduced.

Referring to fig. 2 to 6, the present utility model provides an exhaust assembly, comprising: the gas direction-changing device comprises a gas conveying channel 1 and a gas direction-changing channel 2 which are mutually communicated, wherein the gas direction-changing channel 2 is gradually widened along the direction far away from the gas conveying channel 1, a gas outlet 21 is formed, a direction-changing part 22 is arranged at the gas outlet 21, the direction-changing part 22 extends along the direction which is at an angle with the axial direction X of the gas direction-changing channel 2, the gas conveying channel 1 is used for blowing gas to the gas direction-changing channel 2, and the direction-changing part 22 is used for changing the flow direction of partial gas sprayed from the gas outlet 21. In the examples shown in fig. 5 to 6, the gas delivery passage 1 is a linear passage having a uniform inner diameter, and the gas redirecting passage 2 is an irregular passage having an inner diameter that gradually increases in a direction away from the gas delivery passage 1. As will be appreciated by those skilled in the art, a concentrated high pressure, high velocity gas stream is readily formed as it flows in the gas delivery channel 1; when the gas flow flows from the gas conveying channel 1 to the gas diversion channel 2, part of the gas flow can be dispersed along with the gradual increase of the inner diameter, so that the strength of the gas flow is reduced; meanwhile, when the air flow is sprayed out from the air outlet 21, the air flow is influenced by the direction changing part 22 extending along the direction forming an angle with the axial direction X of the air direction changing channel 2, and the flow direction of the other part of the air flow is changed, so that the intensity of the air flow is further weakened, the blowing impact of the air flow on the air outlet 21 is reduced, and the purposes of reducing lip noise and mixing noise are achieved.

Referring to fig. 2 to 4, the turning portion 22 includes at least two protrusions 221, and the at least two protrusions 221 are uniformly arranged along the circumferential direction Y of the air outlet 21. Further, the boss 221 gradually narrows in its own axial direction X. In the present embodiment, the turning portion 22 is a zigzag member formed by sequentially connecting a plurality of protruding portions 221 in the circumferential direction Y of the air outlet 21. In other embodiments, the plurality of protruding portions 221 may be arranged at intervals along the circumferential direction Y of the air outlet 21 or may be irregularly arranged along the circumferential direction Y of the air outlet 21; the boss 221 may also be a rectangular-shaped member (i.e., the width along its own axial direction X remains unchanged); the protruding portion 221 may also be an arc-shaped member (i.e., the edge is formed by an arc segment) or other irregularly shaped member, and those skilled in the art can flexibly configure the direction changing portion 22 according to the position and shape of the air outlet 21. As an alternative embodiment, the inner wall of the direction changing part 22 is a plane or an arc surface, preferably an arc surface, so configured that the direction changing part 22 can change the flow direction of the air flow more smoothly, thereby functioning to disperse the air flow.

Referring to fig. 2 to 4, the extending direction a of the boss 221 and the axial direction X of the gas redirecting passage 2 have an angle θ, which satisfies 0 ° or more and 90 ° or less. In fig. 2, the extending direction a of the boss 221 forms an angle θ of 0 ° with the axial direction X of the gas redirecting passage 2; in fig. 3, the extending direction a of the boss 221 makes an angle θ of 90 ° with the axial direction X of the gas redirecting passage 2; in fig. 4, the extending direction a of the boss 221 makes an angle θ of 45 ° with the axial direction X of the gas redirecting passage 2 (in fig. 4, the extending direction of each boss 221 is different, but the angle θ with the axial direction X of the gas redirecting passage 2 is 45 °). In some other examples, the angle between the extending direction a of the protruding portion 221 and the axial direction X of the gas diversion channel 2 may be other reasonable values, such as 60 °, 75 °, etc., and those skilled in the art can configure the extending direction a of the protruding portion 221 according to practical situations.

Referring to fig. 6, the exhaust assembly includes two gas diversion channels 2, one ends of the two gas diversion channels 2 are communicated with the gas conveying channel 1, the other ends are air outlets 21, and the two air outlets 21 are oppositely arranged along the direction perpendicular to the axial direction X of the gas diversion channels 2 and are respectively provided with a diversion portion 22. In the double discharge compressor shown in fig. 6, the axial direction X of the gas redirecting passage 2 is the up-down direction, two gas redirecting passages 2 are opened one above the other, one below the other, and two gas outlets 21 are coaxially provided along an axis parallel to the axial direction X of the gas redirecting passages 2; in other embodiments, the two gas outlets 21 may also be staggered along the axial direction X of the gas redirecting channel 2, and may also be arranged in a direction that is angled to the axial direction X of the gas redirecting channel 2, and accordingly the mounting position and orientation of the redirecting portion 22 should be adapted to the position and orientation of the gas outlets 21.

Referring to fig. 5 to 6, the present utility model further provides a cylinder, including: an upper cylinder head 3, a lower cylinder head 4, a cylinder block and an exhaust assembly as above; the upper cylinder cover 3 and the lower cylinder cover 4 are respectively arranged at two ends of the cylinder body, and the exhaust assembly penetrates through the cylinder body. It should be noted that, in the examples shown in fig. 5 to 6, the engine further includes a connecting piece 8, where the connecting piece 8 penetrates through the cylinder and is connected with the external structure, so that the centers of the upper cylinder cover 3 and the lower cylinder cover 4 are respectively provided with a through hole so as to facilitate the penetrating of the connecting piece 8; at the same time, the axial direction X of the gas redirecting passage 2 is parallel to the axial direction X of the connecting piece 8, and the upper cylinder head 3 and the lower cylinder head 4 are arranged at intervals along the axial direction X of the gas redirecting passage 2.

Further, a first air storage cavity 31 is formed between the upper cylinder cover 3 and the cylinder body, a second air storage cavity 41 is formed between the lower cylinder cover 4 and the cylinder body, and the air diversion channel 2 is communicated with the first air storage cavity 31 and/or the second air storage cavity 41. Further, the cylinder further comprises a connecting channel 5, the connecting channel 5 is communicated with the first air storage cavity 31 and the second air storage cavity 41, a direction changing part 22 is arranged at a port, close to the first air storage cavity 31, of the connecting channel 5, and the connecting channel 5 is used for conveying air blown to the second air storage cavity 41 to the first air storage cavity 31. It should be noted that, the first air storage cavity 31 and the second air storage cavity 41 are both annular cavities; in the double exhaust compressor shown in fig. 6, high-temperature and high-pressure gas located in the second gas storage chamber 41 can flow from the connection passage 5 into the first gas storage chamber 31, and at the same time, the port of the connection passage 5 near the first gas storage chamber 31 is further provided with a direction changing portion 22 to reduce the intensity of the gas flow, thereby reducing the noise caused by the blowing of the gas flow. In other embodiments, both ends of the connection channel 5 may be provided with the direction changing part 22, thereby further achieving silence of the compressor.

In another embodiment, the present utility model also provides a compressor comprising a cylinder as above. Optionally, both ends of the gas channel in the compressor may be provided with a direction-changing part 22 to change the direction of part of the airflow, so as to reduce the strength of the airflow, thereby reducing the impact on the gas outlet 21, reducing the noise caused by the impact, and realizing the silencing of the compressor.

In summary, in the exhaust assembly, the cylinder and the compressor provided by the embodiment of the utility model, the exhaust assembly includes: the gas direction-changing device comprises a gas conveying channel and a gas direction-changing channel which are mutually communicated, wherein the gas direction-changing channel is gradually widened along the direction far away from the gas conveying channel and forms a gas outlet, a direction-changing part is arranged at the gas outlet and extends along the direction forming an angle with the axial direction of the gas direction-changing channel, the gas conveying channel is used for blowing gas to the gas direction-changing channel, and the direction-changing part is used for changing the flow direction of partial gas sprayed from the gas outlet.

The above description is only illustrative of the preferred embodiments of the present utility model and is not intended to limit the scope of the present utility model, and any alterations and modifications made by those skilled in the art based on the above disclosure shall fall within the scope of the appended claims.

Claims

1. An exhaust assembly, comprising: the gas direction-changing device comprises a gas conveying channel and a gas direction-changing channel which are mutually communicated, wherein the gas direction-changing channel is gradually widened along the direction far away from the gas conveying channel and forms a gas outlet, a direction-changing part is arranged at the gas outlet and extends along the direction forming an angle with the axial direction of the gas direction-changing channel, the gas conveying channel is used for blowing gas to the gas direction-changing channel, and the direction-changing part is used for changing the flow direction of partial gas sprayed from the gas outlet.

2. The exhaust assembly as recited in claim 1 wherein said deflector includes at least two lobes, at least two of said lobes being evenly spaced along a circumference of said air outlet.

3. The exhaust assembly as recited in claim 2 in which said boss tapers axially thereat.

4. The vent assembly of claim 2 wherein the inner wall of the deflector is planar or arcuate.

5. The vent assembly of claim 2 wherein said projection extends at an angle θ from the axial direction of said gas redirecting passage, satisfying 0 θ+.ltoreq.90 °.

6. The vent assembly of claim 1, wherein the vent assembly comprises two gas redirecting channels, one ends of the two gas redirecting channels are communicated with the gas conveying channel, the other ends of the two gas redirecting channels are gas outlets, and the two gas outlets are oppositely arranged along the direction perpendicular to the axial direction of the gas redirecting channels and are respectively provided with the redirecting parts.

7. A cylinder, comprising: an upper head, a lower head, a cylinder block, and an exhaust assembly according to any one of claims 1 to 6;

The upper cylinder cover and the lower cylinder cover are respectively arranged at two ends of the cylinder body, and the exhaust assembly penetrates through the cylinder body.

8. The cylinder of claim 7, wherein a first air storage cavity is formed between the upper cylinder cover and the cylinder body, a second air storage cavity is formed between the lower cylinder cover and the cylinder body, and the air diversion channel is communicated with the first air storage cavity and/or the second air storage cavity.

9. The cylinder according to claim 8, further comprising a connection passage that communicates the first air storage chamber and the second air storage chamber, the connection passage being provided with the turning portion near a port of the first air storage chamber, the connection passage being for conveying the gas blown to the second air storage chamber to the first air storage chamber.

10. A compressor comprising a cylinder as claimed in claims 7 to 9.