CN215672624U

CN215672624U - Exhaust mechanism, compressor and refrigeration plant

Info

Publication number: CN215672624U
Application number: CN202121507541.5U
Authority: CN
Inventors: 陈新杰; 黄刚
Original assignee: Anhui Meizhi Compressor Co Ltd
Current assignee: Anhui Meizhi Compressor Co Ltd
Priority date: 2021-07-02
Filing date: 2021-07-02
Publication date: 2022-01-28
Anticipated expiration: 2031-07-02

Abstract

The utility model relates to the technical field of compressors, and provides an exhaust mechanism, a compressor and refrigeration equipment, wherein the exhaust mechanism comprises: the cylinder seat is provided with at least two high-pressure cavities, each high-pressure cavity is provided with an air inlet and an air outlet, and the high-pressure cavities are sequentially communicated along the airflow flowing direction to form an exhaust flow channel; one end of the connecting pipe is connected with the air outlet hole of one high-pressure cavity, and the other end of the connecting pipe is connected with the air inlet hole of the other high-pressure cavity; and the silencing pipe is arranged in any high-pressure cavity and is provided with a first opening end and a second opening end, the first opening end is connected with an air inlet or an air outlet of the high-pressure cavity, and the second opening end is positioned in the high-pressure cavity. The silencing pipe is arranged in the high-pressure cavity, the two high-pressure cavities are communicated through the connecting pipe, the length of the exhaust flow channel can be effectively increased, the pipe hole diameter and the length of the silencing pipe and the pipe hole diameter and the length of the connecting pipe are adjusted, so that the flow damping of air flow can be adjusted, and the exhaust pulsation phenomenon of the compressor can be effectively improved.

Description

Exhaust mechanism, compressor and refrigeration plant

Technical Field

The utility model relates to the technical field of compressors, and particularly provides an exhaust mechanism, a compressor and refrigeration equipment.

Background

With the improvement of life quality, refrigeration equipment such as refrigerators and freezers are widely applied, users have higher requirements on the mute performance of the refrigeration equipment, and a compressor is used as a core component of the refrigeration equipment and is one of noise sources of the refrigeration equipment, so that the vibration and noise reduction of the compressor is very important.

Through experimental discovery, the compressor can carry out intermittent type nature exhaust at the working process to cause the air current in the exhaust passage to produce inhomogeneous change, lead to appearing the exhaust pulsation phenomenon, and the exhaust pulsation phenomenon can cause the pipeline of compressor to produce resonance, and then produces the noise, and it is thus obvious that the exhaust pulsation phenomenon can effectively reduce the produced noise of compressor working process to improve.

In the related art, the noise problem is generally improved by increasing the volume of the discharge chamber in the domestic small and medium piston reciprocating compressor, but as the compressor is more and more miniaturized, the volume of the discharge chamber is reduced, the discharge pulsation problem of the small compressor is increased, and therefore, the discharge pulsation is difficult to be improved by increasing the volume of the discharge chamber.

It can be seen that there is still no effective means for improving the discharge pulsation phenomenon of the compressor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an exhaust mechanism, a compressor and refrigeration equipment, and aims to solve the technical problem that the existing compressor has high working noise due to pipeline resonance caused by exhaust pulsation.

In order to achieve the purpose, the embodiment of the utility model adopts the technical scheme that: a discharge mechanism adaptable for a compressor, the discharge mechanism comprising:

the cylinder seat is provided with at least two high-pressure cavities, each high-pressure cavity is provided with an air inlet and an air outlet, and the high-pressure cavities are sequentially communicated along the airflow flowing direction to form an exhaust runner;

one end of the connecting pipe is connected to the air outlet of one high-pressure cavity, and the other end of the connecting pipe is connected to the air inlet of the other high-pressure cavity; and

the silencing pipe is arranged in any high-pressure cavity and is provided with a first opening end and a second opening end, the first opening end is connected to the air inlet hole or the air outlet hole of the high-pressure cavity, and the second opening end is located in the high-pressure cavity.

In one embodiment, the cylinder block further has an intake passage communicating with the intake hole of the high pressure chamber at a starting end of the exhaust flow passage.

In one embodiment, the air inlet passage comprises a plurality of air inlet sections which are communicated in sequence along the airflow flowing direction, and the inner diameter of each air inlet section is reduced in sequence along the airflow flowing direction.

In one embodiment, the sound-deadening tube is a coiled tube.

In one embodiment, the connecting tube is a coiled tube.

In one embodiment, the second open end is disposed at the bottom of the high pressure chamber.

In one embodiment, the silencing pipe comprises a plurality of first pipe sections, and the first pipe sections are sequentially detachably connected.

In one embodiment, the inner diameter of the silencing pipe ranges from 2mm to 5 mm; and/or a length in the range of 150mm to 250 mm.

In one embodiment, the inner diameter of the connecting pipe ranges from 2mm to 5 mm.

The exhaust mechanism provided by the embodiment of the utility model at least has the following beneficial effects: the silencing pipe is arranged in the high-pressure cavity, and every two high-pressure cavities are communicated through the connecting pipe, so that the length of an exhaust flow passage can be effectively increased, and the exhaust pulsation phenomenon of the compressor is improved; in addition, the pipe hole diameter and the length of the sound pipe and the pipe hole diameter and the length of the connecting pipe can be adjusted according to actual application requirements, so that the flow damping of air flow can be adjusted, the exhaust pulsation phenomenon of the compressor is effectively improved, the pipeline vibration of the compressor is reduced, and the noise generated in the working process of the compressor can be effectively reduced.

In order to achieve the purpose, the utility model also provides a compressor which comprises the exhaust mechanism.

The compressor provided by the embodiment of the utility model at least has the following beneficial effects: after the exhaust mechanism is adopted, the exhaust pulsation phenomenon of the compressor is effectively improved, the pipeline vibration of the compressor is reduced, and the noise generated in the working process of the compressor can be effectively reduced.

In order to achieve the above object, the present invention also provides a refrigeration apparatus including the above compressor.

Since the refrigeration equipment adopts all the embodiments of the compressor, at least all the advantages of the embodiments are achieved, and detailed description is omitted.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a compressor according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the vent mechanism taken along line A-A of FIG. 1 in accordance with an embodiment of the present invention;

fig. 3 is a schematic structural view of a silencer duct according to the present embodiment;

FIG. 4 is a schematic diagram of an intake passage of a cylinder block according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an exhaust pipe according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

1000. a compressor; 100. an exhaust mechanism; 110. a cylinder block; 111. a base body; 1111. a high pressure chamber; 1112. an air inlet; 1113. an air outlet; 1114. an air intake passage; 11141. an air intake section; 1115. a threaded connection; 112. a cover body; 1121. connecting holes; 113. a fastener; 120. a connecting pipe; 130. a sound-deadening tube; 131. a first open end; 132. a second open end; 133. a first tube section; 140. an exhaust pipe; 141. a second pipe section.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Through the experiment, it is found that because the compressor can carry out intermittent type nature exhaust in the course of the work to cause the air current in the exhaust passage to produce inhomogeneous change, lead to appearing the exhaust pulsation phenomenon, and the exhaust pulsation phenomenon can cause the pipeline of compressor to produce resonance, and then produce the noise.

In view of the above, in one scheme, the discharge pulsation phenomenon of the compressor is improved by increasing the volume of the discharge cavity of the compressor. However, since the demand for miniaturization of the compressor is increasing, the scheme of increasing the volume of the discharge chamber of the compressor cannot be applied to the small compressor, and the discharge pulsation phenomenon of the small compressor cannot be effectively improved.

In another scheme, through install the muffler on the blast pipe of the exhaust mechanism of compressor to reduce the produced noise in the compressor working process, however, because the volume of muffler is great, lead to the volume of compressor also increase along with it, be unfavorable for realizing the miniaturized design of compressor, the muffler structure that is used for the compressor at present is fairly simple moreover, and the noise cancelling effect is relatively poor, can't effectively reduce the produced noise in the compressor working process.

In view of this, the present application provides an exhaust mechanism 100, and after the exhaust mechanism 100 is applied to the compressor 1000, the exhaust pulsation phenomenon of the compressor 1000 can be effectively improved, so as to reduce the pipeline vibration of the compressor 1000 and reduce the noise generated during the operation of the compressor 1000, and the structure of the exhaust mechanism 100 is compact, which is beneficial to realizing the miniaturization design of the compressor 1000.

The exhaust mechanism 100 described above will be described in detail with reference to the drawings.

Referring to fig. 1 to 3, an exhaust mechanism 100 includes a cylinder block 110, a muffler pipe 130, and at least one connecting pipe 120; the cylinder base 110 is provided with at least two high-pressure cavities 1111, the high-pressure cavities 1111 are provided with air inlet holes 1112 and air outlet holes 1113, and the high-pressure cavities 1111 are sequentially communicated along the air flow direction to form an exhaust channel; one end of the connecting pipe 120 is connected to the air outlet 1113 of one high-pressure chamber 1111, and the other end is connected to the air inlet 1112 of the other high-pressure chamber 1111, that is, each two high-pressure chambers 1111 are communicated through one connecting pipe 120; the muffler pipe 130 is disposed in any one of the high pressure chambers 1111, and the muffler pipe 130 has a first opening end 131 and a second opening end 132, the first opening end 131 is connected to the air inlet 1112 or the air outlet 1113 of the high pressure chamber 1111, and the second opening end 132 is disposed in the high pressure chamber 1111.

Taking the first opening end 131 of the muffler pipe 130 connected to the air inlet 1112 of the high pressure chamber 1111 as an example, the outer wall of the first opening end 131 may be in interference fit with the hole wall of the air inlet 1112, or may be in clearance fit with the hole wall of the air inlet 1112.

In some specific examples of the embodiment, when the outer wall of the first open end 131 is in clearance fit with the hole wall of the air intake hole 1112, the size of the clearance between the outer wall of the first open end 131 and the hole wall of the air intake hole 1112 is in a range of 0.1mm to 0.2mm, so that it is more convenient to insert the first open end 131 into the air intake hole 1112 and then fixedly connect the first open end 131 with the air intake hole 1112, and it is understood that the fixed connection manner of the first open end 131 and the air intake hole 1112 includes various manners, such as adhesion, welding, and the like, and is not limited herein.

In some specific examples of the embodiment, when the outer wall of the first opening end 131 is in clearance fit with the hole wall of the air intake hole 1112, a first sealing member (not shown) is disposed between the outer wall of the first opening end 131 and the hole wall of the air intake hole 1112, and after the first opening end 131 is inserted into the air intake hole 1112, the first sealing member is tightly pressed between the outer wall of the first opening end 131 and the hole wall of the air intake hole 1112, so that the first opening end 131 is tightly connected to the air intake hole 1112.

It should be noted that the first opening end 131 is connected to the air outlet hole 1113 in the same way as the first opening end 131 is connected to the air inlet hole 1112, and the detailed description is omitted here.

The operation principle of the exhaust mechanism 100 is as follows: the air flow enters the high pressure chamber 1111 at the beginning end of the exhaust flow channel, then enters the next high pressure chamber 1111 through the connecting pipe 120, and finally is discharged outwards from the air outlet 1113 of the high pressure chamber 1111 at the end of the exhaust flow channel, and in the process, when the air flow enters the high pressure chamber 1111 where the silencing pipe 130 is located, the air flow can flow through the silencing pipe 130; it can be understood that when the first open end 131 is connected to the air inlet hole 1112 of the high pressure chamber 1111, the air flow flows into the silencing tube 130 from the first open end 131, then flows out from the second open end 132 to the high pressure chamber 1111, and finally is discharged from the air outlet hole 1113 of the high pressure chamber 1111; when the first open end 131 is connected to the air outlet 1113 of the high pressure chamber 1111, the air flows into the high pressure chamber 1111 from the air inlet 1112, then flows into the muffler pipe 130 through the second open end 132, and finally is discharged from the air outlet 1113 of the high pressure chamber 1111 through the first open end 131.

The silencing pipe 130 is arranged in the high-pressure cavities 1111, and every two high-pressure cavities 1111 are communicated through the connecting pipe 120, so that the length of an exhaust flow passage can be effectively increased, and the exhaust pulsation phenomenon of the compressor 1000 is improved; in addition, the pipe hole diameter and length of the sound pipe 130 and the pipe hole diameter and length of the connection pipe 120 can be adjusted according to the actual application requirements, so that the flow damping of the air flow can be adjusted, the exhaust pulsation phenomenon of the compressor 1000 can be effectively improved, the pipeline vibration of the compressor 1000 can be reduced, and the noise generated in the working process of the compressor 1000 can be effectively reduced.

In addition, because the silencing tube 130 is disposed in any one of the high-pressure chambers 1111, it is not necessary to occupy an external space of the exhaust mechanism 100, which can effectively improve the structural compactness of the exhaust mechanism 100 and is beneficial to the realization of the miniaturization design of the compressor 1000.

Referring to fig. 2, the cylinder block 110 includes a base 111 and at least two covers 112, the base 111 has at least two high pressure chambers 1111, each high pressure chamber 1111 has a port, and each cover 112 covers one port of the high pressure chamber 1111 to seal the high pressure chamber 1111.

It should be noted that the fixed connection manner of the cover 112 and the base 111 includes various manners, such as a fastening connection manner, a snap connection manner, and the like, and is not limited herein.

In this embodiment, the cover 112 is fixedly connected to the base 111 by fastening. Specifically, referring to fig. 2, the cylinder block 110 further includes at least two fasteners 113, such as bolts, screws, etc., the cover 112 has a connecting hole 1121, the base 111 has a threaded connection 1115 at the bottom of each high pressure chamber 1111, and the fasteners 113 pass through the connecting hole 1121 of the cover 112 and then are connected to the threaded connection 1115 of the base 111, so as to press the cover 112 against the base 111.

In order to avoid the occurrence of a gap between the edge of the cover 112 and the edge of the opening of the high-pressure chamber 1111, which may cause air leakage and generate noise, a second sealing member (not shown) is disposed between the cover 112 and the edge of the opening of the high-pressure chamber 1111, specifically, the second sealing member is a sealing gasket, and after the cover 112 and the base 111 are fixedly connected, the second sealing member is tightly pressed between the cover 112 and the base 111.

In this embodiment, referring to fig. 4, the cylinder block 110 further has an intake channel 1114, the intake channel 1114 is communicated with the intake holes 1112 of the high pressure chambers 1111 located at the beginning of the exhaust channel, and the air flow sequentially passes through the intake channel 1114 and the intake holes 1112 to enter the high pressure chambers 1111 located at the beginning of the exhaust channel, then sequentially passes through the high pressure chambers 1111, and finally is discharged from the exhaust holes 1113 of the high pressure chambers 1111 located at the end of the exhaust channel.

Specifically, as shown in fig. 4, the air inlet channel 1114 includes a plurality of air inlet sections 11141 which are sequentially communicated in the airflow flowing direction, and the inner diameter of each air inlet section 11141 is sequentially reduced in the airflow flowing direction, in other words, the inner diameter of the previous air inlet section 11141 is larger than the inner diameter of the next air inlet section 11141 in the airflow flowing direction, so that the airflow undergoes a plurality of abrupt changes in the cross section of the pipeline when flowing through the air inlet channel 1114, so that the flow damping of the airflow can be adjusted, and the exhaust pulsation phenomenon can be more effectively improved.

In this embodiment, referring to fig. 2, to facilitate the placement of the muffler pipe 130 in the high pressure chamber 1111, a coil pipe may be used as the muffler pipe 130. Under the condition that the volume of the high-pressure cavity 1111 is fixed, the upper limit of the length of the coil pipe is larger, so that the length adjusting range of the silencing pipe 130 can be effectively expanded, the exhaust mechanism 100 can improve the exhaust pulsation phenomenon of the compressor 1000 under more different working conditions, and the application range of the exhaust mechanism 100 can be further expanded.

Of course, the silencing tube 130 may also adopt other different structures, such as a straight tube structure, a bent tube structure, etc., and is not limited in detail herein.

In this embodiment, to further increase the length of the exhaust flow path, a coil pipe may be used as the connection pipe 120. Of course, the silencing tube 130 may also adopt other different structures, such as a straight tube structure, a bent tube structure, etc., and is not limited in detail herein.

In this embodiment, as shown in fig. 2, in order to effectively utilize the internal space of the high pressure chamber 1111 and ensure that the sound-deadening tube 130 has a sufficient length range, the second opening end 132 of the sound-deadening tube 130 is disposed at the bottom of the high pressure chamber 1111.

It is understood that the end surface of the second open end 132 of the sound-deadening tube 130 is not disposed adjacent to the bottom surface of the high-pressure chamber 1111, that is, the end surface of the second open end 132 of the sound-deadening tube 130 is disposed apart from or at an angle to the bottom surface of the high-pressure chamber 1111, so that the air flow can pass through the second open end 132 of the sound-deadening tube 130.

In the present embodiment, the muffler pipe 130 is a multi-stage detachable structure in order to adjust the length of the muffler pipe 130.

In some specific examples of the embodiment, please refer to fig. 3, the sound-deadening tube 130 includes a plurality of first tube segments 133 detachably connected in sequence.

It should be noted that the detachable connection manner between two adjacent first pipe segments 133 includes various manners, for example, one end of the first pipe segment 133 is provided with an external thread and the other end is provided with an internal thread, the external thread of one first pipe segment 133 is matched with the internal thread of the other first pipe segment 133 to realize the detachable connection between two adjacent first pipe segments 133; if a protruding ring is disposed at one end of the first pipe segment 133 and an annular groove is disposed at the other end of the first pipe segment 133, the protruding ring of one first pipe segment 133 is clamped into the annular groove of another first pipe segment 133, so as to achieve detachable connection between two adjacent first pipe segments 133.

When the length of the muffler pipe 130 is adjusted, a certain number of first pipe sections 133 can be sequentially connected according to actual application working conditions until the muffler pipe 130 reaches a preset length, so that the operation convenience of adjusting the length of the muffler pipe 130 can be effectively improved, the manufacture of various muffler pipes 130 with different length and size can be avoided, and the production cost of the exhaust mechanism 100 can be effectively reduced.

The lengths of the first pipe segments 133 of the silencer duct 130 may be the same or different, and are not limited herein.

In the present embodiment, the inner diameter of the muffler pipe 130 is limited to 2mm to 5mm, for example, the inner diameter of the muffler pipe 130 may be 2mm, 3mm or 5mm, and tests prove that the exhaust pulsation of the compressor 1000 can be effectively improved and the pipeline vibration of the compressor 1000 can be reduced by limiting the inner diameter of the muffler pipe 130 to the above range, so that the noise generated during the operation of the compressor 1000 can be effectively reduced.

In the present embodiment, the length range of the muffler pipe 130 is defined between 150mm and 250mm, for example, the length of the muffler pipe 130 may be 150mm, 200mm or 250mm, and tests prove that by defining the length dimension of the muffler pipe 130 in the above range, the exhaust pulsation phenomenon of the compressor 1000 can be effectively improved, the pipeline vibration of the compressor 1000 is reduced, and thus the noise generated during the operation of the compressor 1000 can be effectively reduced.

In this embodiment, the inner diameter of the connection pipe 120 is limited to 2mm to 5mm, for example, the inner diameter of the connection pipe 120 may be 2mm, 3mm or 5mm, and tests prove that the exhaust pulsation of the compressor 1000 can be effectively improved and the pipeline vibration of the compressor 1000 can be reduced by limiting the inner diameter of the connection pipe 120 to the above range, so that the noise generated during the operation of the compressor 1000 can be effectively reduced.

In this embodiment, please refer to fig. 2, the exhaust mechanism 100 further includes an exhaust pipe 140, the exhaust pipe 140 is disposed outside the cylinder block 110, and one end of the exhaust pipe 140 is connected to the air outlet 1113 of the high pressure chamber 1111 located at the end of the exhaust flow passage.

In order to facilitate adjustment of the extension structure of the discharge pipe 140 according to the layout space of the compressor 1000, the discharge pipe 140 has a multi-stage detachable structure.

Specifically, as shown in fig. 5, the exhaust pipe 140 includes a plurality of second pipe segments 141 detachably connected in sequence.

It should be noted that the detachable connection manner between two adjacent second pipe sections 141 includes multiple manners, for example, one end of the second pipe section 141 is provided with an external thread and the other end is provided with an internal thread, the external thread of one second pipe section 141 is matched with the internal thread of the other second pipe section 141 to realize the detachable connection between two adjacent second pipe sections 141; if a protruding ring is disposed at one end of the second pipe section 141 and an annular clamping groove is disposed at the other end of the second pipe section 141, the protruding ring of one second pipe section 141 is clamped into the annular clamping groove of another second pipe section 141, so as to realize the detachable connection between two adjacent second pipe sections 141.

It should be noted that the structures of the second pipe sections 141 may be the same or different, for example, a part of the second pipe sections 141 are straight pipes, and another part of the second pipe sections 141 are bent pipes, and the structures of the second pipe sections 141 may be specifically adjusted according to the layout space of the compressor 1000.

Referring to fig. 1, a second aspect of the present application provides a compressor 1000 including the above-mentioned discharge mechanism 100.

After the exhaust mechanism 100 is adopted, the exhaust pulsation phenomenon of the compressor 1000 is effectively improved, and the pipeline vibration of the compressor 1000 is reduced, so that the noise generated in the working process of the compressor 1000 can be effectively reduced.

A third aspect of the present application provides a refrigeration apparatus including the above-described compressor 1000.

Since the refrigeration device adopts all embodiments of the compressor 1000, at least all the advantages of the embodiments are achieved, and no further description is given here.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. An exhaust mechanism applicable to a compressor, characterized in that: the exhaust mechanism includes:

2. The exhaust mechanism as recited in claim 1, wherein: the cylinder block is also provided with an air inlet channel which is communicated with the air inlet hole of the high-pressure cavity at the starting end of the exhaust flow channel.

3. The exhaust mechanism according to claim 2, wherein: the air inlet channel comprises a plurality of air inlet sections which are sequentially communicated along the airflow flowing direction, and the inner diameters of the air inlet sections are sequentially reduced along the airflow flowing direction.

4. The exhaust mechanism as recited in claim 1, wherein: the silencing pipe is a coil pipe.

5. The exhaust mechanism as recited in claim 1, wherein: the connecting pipe is a coil pipe.

6. The exhaust mechanism as recited in claim 1, wherein: the second open end is disposed at the bottom of the high pressure chamber.

7. The exhaust mechanism as recited in claim 1, wherein: the silencing pipe comprises a plurality of first pipe sections, and the first pipe sections are sequentially detachably connected.

8. The exhaust mechanism according to any one of claims 1 to 7, characterized in that: the inner diameter range of the silencing pipe is 2mm-5 mm; and/or a length in the range of 150mm to 250 mm.

9. The exhaust mechanism according to any one of claims 1 to 7, characterized in that: the inner diameter range of the connecting pipe is 2mm-5 mm.

10. A compressor, characterized by: the compressor includes a discharge mechanism as claimed in any one of claims 1 to 9.

11. A refrigeration apparatus, characterized by: the refrigeration appliance comprising a compressor as claimed in claim 10.