CN220267953U

CN220267953U - Silencing cover, compressor and refrigeration equipment

Info

Publication number: CN220267953U
Application number: CN202321777243.7U
Authority: CN
Inventors: 曹聪; 张康; 索文平
Original assignee: Guangdong Midea Environmental Technologies Co Ltd
Current assignee: Guangdong Midea Environmental Technologies Co Ltd
Priority date: 2023-07-07
Filing date: 2023-07-07
Publication date: 2023-12-29
Anticipated expiration: 2033-07-07

Abstract

The utility model provides a silencing cover, a compressor and refrigeration equipment, wherein the silencing cover comprises: the cover body is provided with a silencing cavity and a rotational flow channel; the air outlet is arranged on the cover body, and the silencing cavity is communicated with the air outlet through a cyclone channel; wherein at least a portion of the swirl passage extends in a clockwise or counter-clockwise direction.

Description

Silencing cover, compressor and refrigeration equipment

Technical Field

The utility model relates to the technical field of silencing covers, in particular to a silencing cover, a compressor and refrigeration equipment.

Background

At present, a scroll compressor in the related art is generally divided into a high-pressure cavity and a low-pressure cavity, in the compressor with a high-pressure cavity structure, most of space inside the compressor is a high-pressure area, a pump body is arranged on the upper part of the compressor, fluid is discharged from an exhaust port of a static disc after being compressed, and is directly impacted to an upper cover, so that noise vibration at the top of the compressor is large.

Disclosure of Invention

Embodiments of the present utility model aim to solve at least one of the technical problems existing in the prior art.

To this end, a first aspect of an embodiment of the present utility model provides a sound-deadening cap.

A second aspect of an embodiment of the present utility model provides a compressor.

A third aspect of embodiments of the present utility model provides a refrigeration appliance.

In view of this, according to a first aspect of an embodiment of the present utility model, there is provided a muffler cover including: the cover body is provided with a silencing cavity and a rotational flow channel; the air outlet is arranged on the cover body, and the silencing cavity is communicated with the air outlet through a cyclone channel; wherein at least a portion of the swirl passage extends in a clockwise or counter-clockwise direction.

The silencing cover provided by the embodiment of the utility model comprises a cover body and an air outlet, wherein the cover body is provided with a silencing cavity, a rotational flow channel and the air outlet, and the silencing cavity is communicated with the air outlet through the rotational flow channel, namely, fluid flows through the rotational flow channel after entering the silencing cavity and finally is discharged out of the silencing cover through the air outlet.

It is understood that the compressor comprises a static disc and a movable disc, the static disc and the movable disc are matched to form a compression cavity, the static disc is provided with an exhaust port, and the silencing cover is arranged on the outer side of the exhaust port. Specifically, when the compressor is running, the compressed high-pressure fluid is discharged from the compression cavity through the exhaust port, enters the silencing cavity, flows through the cyclone channel and finally is discharged through the air outlet.

The compressor also comprises a shell, the shell is provided with an exhaust cavity, the air outlet is communicated with the exhaust cavity, that is, high-pressure fluid discharged through the air outlet enters the exhaust cavity and is finally discharged out of the shell through an exhaust pipeline on the shell.

At least a portion of the swirl channels extend in a clockwise direction or at least a portion of the swirl channels extend in a counter-clockwise direction. Therefore, when the high-pressure fluid flows through the cyclone channel and is discharged into the exhaust cavity through the air outlet, the high-pressure fluid can flow downwards after flowing a certain distance in the clockwise direction or the anticlockwise direction in the exhaust cavity, that is, the flow path of the high-pressure fluid is prolonged, the flow speed of the high-pressure fluid is reduced, energy is consumed in the process, exhaust pulsation is effectively weakened, and the purposes of silencing and noise reduction are achieved.

In addition, because high-pressure fluid flows through the swirl channel to when discharging to the exhaust intracavity through the gas outlet, can flow the back in the exhaust intracavity along clockwise or anticlockwise certain distance, again flow downwards, can also improve the oil content effect, reduce and spit the oil mass, improve the oil content efficiency, and then promote the energy efficiency of the compressor that has this amortization cover.

It is worth to say that the number of the swirl channels may be multiple, and the number of the air outlets is also multiple, and each swirl channel is communicated with at least one air outlet, that is, the high-pressure fluid is discharged from the air outlet of the static disc, enters the silencing cavity, flows through the multiple swirl channels respectively, and is finally discharged through the multiple air outlets. Therefore, the flow path of the high-pressure fluid can be prolonged, the flow speed of the fluid is reduced, the noise reduction effect is achieved, the high-pressure fluid discharged from the air outlets can form split hedging in the exhaust cavity, the noise reduction effect and the oil content effect of the compressor are further improved, and the energy efficiency is improved.

In addition, the high-pressure fluid enters a plurality of cyclone channels through the silencing cavity, namely, the high-pressure fluid is split, the flowing direction of the airflow is changed, the flowing path of the airflow is prolonged, and the aim of silencing is achieved.

It can be understood that the extending directions of the swirl channels are the same, so that high-pressure fluid discharged from the air outlets can form split-flow opposite flushing in the exhaust cavity, exhaust noise and exhaust pulsation in the operation process of the compressor are reduced, oil content effect can be improved, and the energy efficiency of the compressor is improved.

In addition, the silencing cover provided by the technical scheme of the utility model has the following additional technical characteristics:

in some embodiments, optionally, the number of swirl channels is at least two, each swirl channel communicating with at least one air outlet; wherein, the extending direction of at least two rotational flow channels is the same.

In this embodiment, the number of the swirl passages is at least two, and each swirl passage is communicated with at least one air outlet, that is, the high-pressure fluid is discharged from the air outlet of the static disk and then enters the silencing cavity, flows through at least two swirl passages respectively, and finally is discharged through a plurality of air outlets respectively. Therefore, the flow path of the high-pressure fluid can be prolonged, the flow speed of the fluid is reduced, the noise reduction effect is achieved, the high-pressure fluid discharged from the air outlets can form split hedging in the exhaust cavity, the noise reduction effect and the oil content effect of the compressor are further improved, and the energy efficiency is improved.

In addition, the high-pressure fluid enters at least two rotational flow channels through the silencing cavity, namely, the high-pressure fluid is split, the flowing direction of the airflow is changed, the flowing path of the airflow is prolonged, and the purpose of silencing is achieved.

The extending directions of the at least two rotational flow channels are the same, so that high-pressure fluid discharged from the air outlets can form split-flow opposite flushing in the exhaust cavity, exhaust noise and exhaust pulsation in the operation process of the compressor are reduced, oil content effect can be improved, and energy efficiency of the compressor is improved.

In some embodiments, optionally, at least one of the swirl passages can coincide with one of the remaining swirl passages after being rotated around the central axis of the housing by a preset angle.

In this embodiment, after at least one of the swirl passages rotates around the central axis of the cover by a predetermined angle, it is possible to overlap one of the remaining swirl passages, that is, at least two of the swirl passages have the same extending direction and the same structure. The high-pressure fluid discharged from the air outlets can rotate and flow along the same path in the exhaust cavity, so that split opposite flushing is formed, exhaust noise and exhaust pulsation in the operation process of the compressor are reduced, oil content effect can be improved, and the energy efficiency of the compressor is improved.

Optionally, when the number of the swirl channels is two, the preset angle may be 180 °, i.e. after one swirl channel rotates 180 ° it may coincide with the other swirl channel, i.e. the two swirl channels are symmetrically arranged about the central axis of the cover body.

Optionally, when the number of the swirl channels is three, the preset angle may be 120 °, that is, one swirl channel may be overlapped with one of the rest of the swirl channels after rotating 120 °, and then the swirl channels may be overlapped with the other swirl channel after continuing rotating 120 °.

It will be appreciated that when the sound attenuating cover is applied to a compressor, the central axis of the cover is parallel or coincident with the axis of the compressor crankshaft.

In some embodiments, optionally, the cover includes a first cover and a second cover, where the second cover is connected to the first cover and is arranged along a height direction of the cover with the first cover, the swirl channel and the air outlet are provided in the first cover, the silencing cavity is provided in the second cover, and the second cover is used for fixed installation.

In this embodiment, it is defined that the cover includes a first cover and a second cover, specifically, the first cover is connected with the second cover, and the first cover and the second cover are exhausted in a height direction, and the second cover is for fixed mounting. That is, the cover body is connected with the static disc of the compressor through the second cover body so as to realize the fixed installation of the silencing cover. That is, the first cover is disposed away from the stationary plate relative to the second cover.

The cyclone channel and the air outlet are arranged on the first cover body, the silencing cavity is arranged on the second cover body, that is, the silencing cavity and the cyclone channel are distributed in the height direction of the cover body, so that the flow path of high-pressure fluid is prolonged, the flow speed of the high-pressure fluid is reduced, energy is consumed in the process, exhaust pulsation is effectively weakened, and the purposes of silencing and noise reduction are achieved.

In some embodiments, optionally, the first cover body includes a top cover body and a side cover body that are connected, the top cover body and the side cover body enclose to form a rotational flow channel, the top cover body is relatively arranged with the second cover body, and the air outlet is arranged on the side cover body.

In this embodiment, the first cover is defined to include a top cover and a side cover, specifically, the top cover is connected to the side cover, and the top cover is opposite to the second cover, and the top cover and the side cover enclose a swirl channel, and the air outlet is disposed on the side cover.

That is, the high-pressure air flow is discharged from the exhaust port into the silencing cavity, enters the cyclone channel through the silencing cavity, and finally is discharged into the exhaust cavity through the air outlet positioned on the side cover body, so that the flow path of the high-pressure fluid can be further prolonged, the reflection times of the fluid in the cyclone channel can be increased, and the silencing quantity and the oil content effect can be improved.

In some embodiments, optionally, the side cover comprises a first cavity wall and a second cavity wall, the first cavity wall being disposed opposite the second cavity wall; at least a portion of the first cavity wall is configured as a first arcuate wall; and/or at least a portion of the second cavity wall is configured as a second arcuate wall.

In this embodiment, it is defined that the side cover comprises a first cavity wall and a second cavity wall, in particular, the first cavity wall and the second cavity wall are arranged opposite each other. It is understood that the first cavity wall and the second cavity wall are both inner walls of the side cover.

Optionally, at least a portion of the first cavity wall is configured as a first arcuate wall.

Alternatively, at least a portion of the second chamber wall is configured as a second arcuate wall.

Alternatively, at least a portion of the first chamber wall is configured as a first arcuate wall and at least a portion of the second chamber wall is configured as a second arcuate wall. The setting can be specifically performed according to actual needs.

By providing at least a portion of the first chamber wall and/or at least a portion of the second chamber wall as an arcuate wall, the side shroud and the top shroud form a swirl passage that can extend in a clockwise or counter-clockwise direction. When the high-pressure fluid flows through the cyclone channel and is discharged into the exhaust cavity through the air outlet, the high-pressure fluid can flow downwards after flowing a certain distance in the clockwise direction or the anticlockwise direction in the exhaust cavity, that is, the flow path of the high-pressure fluid is prolonged, the flow speed of the high-pressure fluid is reduced, energy is consumed in the process, exhaust pulsation is effectively weakened, and the purposes of silencing and noise reduction are achieved.

In some embodiments, optionally, the first arc-shaped wall comprises a first arc-shaped section and a second arc-shaped section which are connected, and the centers of the first arc-shaped section and the second arc-shaped section are respectively positioned at two sides of the first arc-shaped wall; the second arc-shaped wall can be overlapped with the first arc-shaped wall after rotating 180 degrees around the central axis of the cover body.

In this embodiment, the first arc-shaped wall includes a first arc-shaped section and a second arc-shaped section, specifically, the first arc-shaped section and the second arc-shaped section are connected, and the center of the first arc-shaped section and the center of the second arc-shaped section are located on two sides of the first arc-shaped wall respectively.

Moreover, the second arc-shaped wall can be overlapped with the first arc-shaped wall after rotating 180 degrees around the central axis of the cover body. That is, the second arc wall and the first arc wall are arranged symmetrically with respect to the center axis of the cover body.

Thereby make first arc wall, second arc wall and the top cap body form two rotational flow channels that extend the same, and then make respectively from two gas outlet exhaust high pressure fluid can form the reposition of redundant personnel hedging in the exhaust chamber, reduce exhaust noise and the exhaust pulsation of compressor operation in-process, and can also improve the oil content effect, promote the energy efficiency of compressor.

In some embodiments, optionally, the second arcuate segment is tangential to the first arcuate segment.

In the embodiment, the first arc-shaped section and the second arc-shaped section are defined to be tangent, so that the two rotational flow channels with the same extending direction formed by the first arc-shaped wall and the second arc-shaped wall are smoothly transited at the joint, the separation of high-pressure fluid flowing out of the silencing cavity to the rotational flow channels on two sides is promoted, and the diversion effect is improved.

In addition, the high-pressure fluid discharged from the two air outlets can form split-flow opposite flushing in the exhaust cavity, so that exhaust noise and exhaust pulsation in the operation process of the compressor are reduced, the oil content effect can be improved, and the energy efficiency of the compressor is improved.

In some embodiments, optionally, the second cover is provided with a through-flow port, and the silencing cavity is communicated with the cyclone channel through the through-flow port; wherein the cross-sectional area of the through-flow opening is smaller than the cross-sectional area of the cyclone channel.

In this embodiment, it is defined that the second cover body is provided with a through-flow port, specifically, the silencing chamber is communicated with the cyclone channel through the through-flow port, that is, after the high-pressure fluid discharged from the exhaust port of the static disc of the compressor enters the silencing chamber, the high-pressure fluid enters the cyclone channel through the through-flow port, flows through the cyclone channel and is discharged through the air outlet.

The cross section area of the through flow port is smaller than that of the cyclone channel, so that high-pressure fluid entering the silencing cavity can generate abrupt change in cross section when entering the cyclone channel through the through flow port, the fluid flow path is changed, the fluid flow speed is reduced, exhaust pulsation is reduced, exhaust vibration is weakened, and the noise reduction effect and the oil content effect of the compressor with the silencing cover are further improved.

Further, since at least a portion of the swirl passage extends in a clockwise direction, or at least a portion of the swirl passage extends in a counterclockwise direction. Therefore, when the high-pressure fluid flows through the cyclone channel and is discharged into the exhaust cavity through the air outlet, the high-pressure fluid can flow downwards after flowing a certain distance in the clockwise direction or the anticlockwise direction in the exhaust cavity, that is, the flow path of the high-pressure fluid is prolonged, the flow speed of the high-pressure fluid is reduced, energy is consumed in the process, exhaust pulsation is effectively weakened, and the purposes of silencing and noise reduction are achieved.

Moreover, because high-pressure fluid flows through the cyclone channel and is discharged into the exhaust cavity through the air outlet, the high-pressure fluid can flow downwards after flowing a certain distance in the clockwise direction or the anticlockwise direction in the exhaust cavity, the oil content effect can be improved, the oil content output is reduced, the oil content efficiency is improved, and then the energy efficiency of the compressor with the silencing cover is improved.

In some embodiments, optionally, the cover is further provided with at least one notch, the at least one notch being in communication with the sound attenuation chamber.

In this embodiment, it is defined that the cover is further provided with at least one indentation, in particular, the at least one indentation communicates with the sound-deadening chamber. It can be understood that when the high-pressure fluid flows in the silencing cavity and the cyclone channel, partial oil-gas separation can also occur, so that separated lubricating oil can flow out of the silencing cavity through at least one notch, the phenomenon that the compressor exhaust is influenced due to the fact that more lubricating oil is accumulated in the silencing cavity is avoided, and the stability and reliability of the compressor in the operation process are further improved.

It is understood that the static disc is provided with a diversion port communicated with the exhaust cavity, and lubricating oil discharged from at least one notch can flow to an oil pool at the bottom of the compressor through the diversion port.

In some embodiments, optionally, a portion of the cover is bent to a side facing away from the sound attenuation chamber to form at least one flange for secure mounting.

In this embodiment, it is defined that a portion of the cover is bent to a side facing away from the sound-deadening chamber to form at least one bead, that is, a portion of the cover is bent outwardly to form a bead. The flange is used for fixed installation, and specifically, the silencing cover is connected with the static disc through at least one flange.

Through forming the turn-ups with the partly of cover body, that is to say, at least one turn-ups and cover body structure as an organic whole to can improve the joint strength between at least one turn-ups and the cover body, improve the installation stability of amortization cover, and then ensure that amortization cover can effectively fall the noise to the high-pressure fluid who discharges from the gas vent, improve noise reduction effect and oil content effect, promote the compressor efficiency.

In some embodiments, optionally, at least one mounting hole is provided on at least one flange; one part of the cover body is sunken to one side of the silencing cavity to form at least one avoidance space, and each avoidance space is communicated with one mounting hole.

In this embodiment, at least one flange is provided with at least one mounting hole, and it is understood that the compressor further includes at least one fastener, and each fastener is connected to the stationary plate through one mounting hole, respectively, to achieve mounting and fixing of the sound-deadening cap.

It is understood that the number of the mounting holes may be plural to improve the mounting stability between the noise reduction cover and the stationary plate.

One part of the cover body is sunken to form at least one avoidance space towards one side of the silencing cavity, and each avoidance space is communicated with one mounting hole, that is, the avoidance spaces are in one-to-one correspondence with the mounting holes. Since at least one mounting hole is used for a fixed mounting. Through setting up at least one space of dodging, can reduce the installation degree of difficulty of amortization cover, improve installation effectiveness.

According to a second aspect of the present utility model, there is provided a compressor comprising the muffler cover provided in any of the above-mentioned aspects, so that the compressor has all the beneficial technical effects of the muffler cover, which are not described herein.

Further, the compressor also comprises a shell, wherein the shell is provided with a gas exhaust cavity, and the gas exhaust cavity is communicated with the gas outlet; the static disc is arranged in the shell, the static disc is provided with an exhaust port, the silencing cover is covered on the outer side of the exhaust port and is connected with the static disc, and the exhaust port is communicated with the silencing cavity; the movable disc and the static disc are enclosed to form a compression cavity, and the compression cavity is communicated with the exhaust port.

The compressor provided by the embodiment of the utility model comprises a shell, a static disc, a movable disc and a silencing cover, wherein the shell is provided with an exhaust cavity, the static disc and the movable disc are matched to form a compression cavity, an exhaust port is arranged on the static disc, the silencing cover is arranged on the outer side of the exhaust port and positioned in the exhaust cavity, and an air outlet of the silencing cover is communicated with the exhaust cavity. Specifically, when the compressor operates, the compressed high-pressure fluid is discharged from the compression cavity through the exhaust port, enters the silencing cavity, flows through the cyclone channel, finally is discharged through the air outlet, enters the exhaust cavity, and finally is discharged to the outside of the shell through the exhaust pipeline on the shell.

In addition, the compressor provided by the technical scheme of the utility model has the following additional technical characteristics:

in some embodiments, optionally, the housing is located at a distance between the inner wall of the exhaust chamber and the air outlet that is less than a preset distance.

In this embodiment, the distance between the air outlet and the inner wall of the housing located in the exhaust cavity is smaller than the preset distance, that is, the distance between the air outlet and the inner wall of the housing is smaller, that is, the air outlet is as close as possible to the inner wall of the housing, so that the high-pressure fluid discharged from the air outlet can quickly reach the inner wall of the housing to perform oil-gas separation, the oil-gas separation effect is improved, and the compressor energy efficiency is further improved.

In addition, after the high-pressure air flow which rapidly reaches the inner wall of the shell flows in the clockwise direction or the anticlockwise direction for a certain distance in the exhaust cavity, the high-pressure air flow downwards flows, namely, the flow path of the high-pressure fluid is prolonged, the flow speed of the high-pressure fluid is reduced, energy is consumed in the process, exhaust pulsation is effectively weakened, and the purposes of silencing and noise reduction are achieved.

In some embodiments, optionally, the static disc is provided with at least one flow guide port, the at least one flow guide port being in communication with the exhaust cavity; at least one diversion opening is staggered with the air outlet along the axial direction of the static disc.

In this embodiment, it is defined that at least one flow guiding opening is provided in the stationary plate and that the at least one flow guiding opening communicates with the exhaust chamber, i.e. in the axial direction of the stationary plate, the at least one flow guiding opening penetrates the stationary plate.

Specifically, the high-pressure fluid discharged from the air outlet to the air discharge cavity flows downwards after flowing a certain distance in the clockwise direction or the anticlockwise direction in the air discharge cavity, passes through at least one flow guide port, and is discharged to the outside of the shell through an air discharge pipeline on the shell.

Along the axial direction of quiet dish, at least one water conservancy diversion mouth staggers the setting with the gas outlet, that is to say, is the angle of predetermineeing between the line between at least one water conservancy diversion mouth and the quiet dish axis and the line between gas outlet and the axis to make from the exhaust high-pressure fluid of gas outlet exhaust can flow downwards after the rotation a distance in the exhaust chamber, further improve the noise elimination effect and the oil content effect of compressor.

Optionally, the line between at least one water conservancy diversion mouth and the quiet dish axis is 90 with the preset angle that is between the line between gas outlet and the axis to further prolong the rotatory reposition of redundant personnel time of the high-pressure fluid in the exhaust chamber of from the gas outlet exhaust, improve noise elimination effect and oil content effect, and then promote the compressor efficiency.

According to a third aspect of the present utility model, there is provided a refrigeration apparatus including the silencing cover provided in the first aspect or the compressor provided in the second aspect, thereby having all the beneficial technical effects of the silencing cover or the compressor, which are not described herein.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 shows a schematic structural view of a sound-deadening cap according to an embodiment of the present utility model;

FIG. 2 shows a schematic structural view of a first cover according to one embodiment of the utility model;

FIG. 3 shows a schematic structural view of a second cover according to an embodiment of the present utility model;

FIG. 4 shows one of partial structural schematics of a compressor according to an embodiment of the present utility model;

FIG. 5 shows a second partial schematic view of a compressor according to an embodiment of the present utility model;

FIG. 6 shows a third partial schematic view of a compressor according to an embodiment of the present utility model;

fig. 7 shows a partial structure diagram of a compressor according to an embodiment of the present utility model.

The correspondence between the reference numerals and the component names in fig. 1 to 7 is:

100 silencing covers, 110 covers, 111 first covers, 1111 top covers, 1112 side covers, 112 second covers, 120 silencing cavities, 130 cyclone channels, 140 air outlets, 150 first cavity walls, 160 second cavity walls, 170 through flow openings, 180 notches, 190 flanging, 191 mounting holes, 210 avoiding spaces, 220 first arc sections, 230 second arc sections, 300 compressors, 310 shells, 311 exhaust cavities, 320 static discs, 321 exhaust ports, 330 moving discs, 340 compression cavities and 350 guide flows.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced otherwise than as described herein, and therefore the scope of the present utility model is not limited to the specific embodiments disclosed below.

A muffler cover 100, a compressor 300, and a refrigerating apparatus provided according to some embodiments of the present utility model are described below with reference to fig. 1 to 7.

In one embodiment according to the present application, as shown in fig. 1, 2 and 3, there is provided a muffler cover 100, the muffler cover 100 including: the cover body 110, the cover body 110 is provided with a silencing cavity 120 and a rotational flow channel 130; the air outlet 140 is arranged on the cover body 110, and the silencing cavity 120 is communicated with the air outlet 140 through the cyclone channel 130; wherein at least a portion of the swirl passage 130 extends in a clockwise or counterclockwise direction.

The silencing cover 100 provided by the embodiment of the utility model includes a cover body 110 and an air outlet 140, specifically, the cover body 110 is provided with a silencing cavity 120, a rotational flow channel 130 and the air outlet 140, specifically, the silencing cavity 120 is communicated with the air outlet 140 through the rotational flow channel 130, that is, after fluid enters the silencing cavity 120, the fluid flows through the rotational flow channel 130 and finally is discharged out of the silencing cover 100 through the air outlet 140.

It is understood that the compressor 300 includes a stationary plate 320 and a movable plate 330, the stationary plate 320 and the movable plate 330 cooperate to form a compression chamber 340, the stationary plate 320 is provided with an exhaust port 321, and the muffler 100 is covered outside the exhaust port 321. Specifically, when the compressor 300 is operated, the compressed high-pressure fluid is discharged from the compression chamber 340 through the discharge port 321, enters the sound deadening chamber 120, flows through the swirl passage 130, and finally is discharged through the discharge port 140.

The compressor 300 further includes a housing 310, the housing 310 is provided with a discharge chamber 311, and the air outlet 140 is communicated with the discharge chamber 311, that is, the high-pressure fluid discharged through the air outlet 140 enters the discharge chamber 311 and finally is discharged to the outside of the housing 310 through a discharge pipe on the housing 310.

At least a portion of the swirl passage 130 extends in a clockwise direction or at least a portion of the swirl passage 130 extends in a counterclockwise direction. Therefore, when the high-pressure fluid flows through the cyclone channel 130 and is discharged into the exhaust cavity 311 through the air outlet 140, the high-pressure fluid can flow downwards after flowing a certain distance in the clockwise direction or the anticlockwise direction in the exhaust cavity 311, that is, the flow path of the high-pressure fluid is prolonged, the flow speed of the high-pressure fluid is reduced, the energy is consumed in the process, the exhaust pulsation is effectively weakened, and the purposes of noise reduction and noise reduction are achieved.

In addition, since the high-pressure fluid flows through the swirl passage 130 and is discharged into the exhaust chamber 311 through the air outlet 140, the high-pressure fluid can flow downwards after flowing a certain distance in the clockwise direction or the anticlockwise direction in the exhaust chamber 311, the oil content effect can be improved, the oil content output can be reduced, the oil content efficiency can be improved, and the energy efficiency of the compressor 300 with the silencing cover 100 can be improved.

It should be noted that the number of the swirl passages 130 may be plural, and the number of the air outlets 140 may be plural, and each of the swirl passages 130 is communicated with at least one air outlet 140, that is, the high-pressure fluid is discharged from the air outlet 321 of the static disc 320, enters the silencing cavity 120, flows through the swirl passages 130 respectively, and is finally discharged through the air outlets 140. Therefore, the flow path of the high-pressure fluid can be prolonged, the flow speed of the fluid is reduced, the noise reduction effect is achieved, the high-pressure fluid discharged from the air outlets 140 can form split opposite flushing in the exhaust cavity 311, the noise reduction effect and the oil content effect of the compressor 300 are further improved, and the energy efficiency of the compressor 300 is improved.

In addition, the high-pressure fluid enters the plurality of cyclone channels 130 through the silencing cavity 120, namely, the high-pressure fluid is split, the flowing direction of the airflow is changed, the flowing path of the airflow is prolonged, and the silencing purpose is achieved.

It can be appreciated that the extending directions of the plurality of swirl passages 130 are the same, so that the high-pressure fluid discharged from the plurality of air outlets 140 can form split opposite flow in the air discharge cavity 311, thereby reducing air discharge noise and air discharge pulsation in the operation process of the compressor 300, and improving oil content effect and energy efficiency of the compressor 300.

As shown in fig. 1 and 2, in some embodiments, optionally, the number of swirl channels 130 is at least two, each swirl channel 130 communicating with at least one air outlet 140; wherein, the extending directions of at least two swirl channels 130 are the same.

In this embodiment, the number of the swirl passages 130 is at least two, and each of the swirl passages 130 is in communication with at least one air outlet 140, that is, the high-pressure fluid is discharged from the air outlet 321 of the static disc 320, enters the silencing chamber 120, flows through at least two of the swirl passages 130, and finally is discharged through a plurality of the air outlets 140. Therefore, the flow path of the high-pressure fluid can be prolonged, the flow speed of the fluid is reduced, the noise reduction effect is achieved, the high-pressure fluid discharged from the air outlets 140 can form split opposite flushing in the exhaust cavity 311, the noise reduction effect and the oil content effect of the compressor 300 are further improved, and the energy efficiency of the compressor 300 is improved.

In addition, the high-pressure fluid enters at least two cyclone channels 130 through the silencing cavity 120, namely, the high-pressure fluid is split, the flowing direction of the airflow is changed, the flowing path of the airflow is prolonged, and the silencing purpose is achieved.

The extending directions of the at least two swirl passages 130 are the same, so that high-pressure fluid discharged from the plurality of air outlets 140 can form split-flow opposite flushing in the air discharge cavity 311, thereby reducing air discharge noise and air discharge pulsation in the operation process of the compressor 300, improving oil content effect and improving energy efficiency of the compressor 300.

As shown in fig. 1 and 2, in some embodiments, optionally, at least one swirl channel 130 can coincide with one swirl channel 130 of the remaining swirl channels 130 after rotating a preset angle around the central axis of the shroud 110.

In this embodiment, after at least one of the swirl passages 130 rotates around the central axis of the cover 110 by a predetermined angle, it is possible to overlap with one of the swirl passages 130 in the remaining swirl passages 130, that is, at least two of the swirl passages 130 have the same extending direction and the same structure. The high-pressure fluid discharged from the air outlets 140 can rotate and flow along the same path in the air discharge cavity 311, so that split opposite flushing is formed, air discharge noise and air discharge pulsation in the operation process of the compressor 300 are reduced, oil content effect can be improved, and energy efficiency of the compressor 300 is improved.

Alternatively, when the number of the swirl passages 130 is two, the preset angle may be 180 °, i.e. after one swirl passage 130 rotates 180 °, it may coincide with the other swirl passage 130, i.e. the two swirl passages 130 are symmetrically disposed about the center axis of the cover 110.

Alternatively, when the number of the swirl passages 130 is three, the preset angle may be 120 °, that is, one swirl passage 130 may be overlapped with one swirl passage 130 of the rest of the swirl passages 130 after rotating 120 °, and then the rotation is continued for 120 ° and may be overlapped with another swirl passage 130 of the rest of the swirl passages 130.

It will be appreciated that when the sound attenuating cap 100 is applied to the compressor 300, the central axis of the cap body 110 is parallel or coincident with the axis of the crankshaft of the compressor 300.

As shown in fig. 1, 2, 3 and 4, in some embodiments, optionally, the cover 110 includes a first cover 111 and a second cover 112, where the second cover 112 is connected to the first cover 111 and is arranged with the first cover 111 along a height direction of the cover 110, the swirl channel 130 and the air outlet 140 are provided on the first cover 111, the sound attenuation chamber 120 is provided on the second cover 112, and the second cover 112 is used for fixed installation.

In this embodiment, it is defined that the cover 110 includes a first cover 111 and a second cover 112, specifically, the first cover 111 is connected with the second cover 112, and the first cover 111 and the second cover 112 are exhausted in the height direction, and the second cover 112 is for fixed mounting. That is, the cover 110 is coupled to the stationary plate 320 of the compressor 300 through the second cover 112 to achieve the fixed installation of the sound-deadening cover 100. That is, the first housing 111 is disposed farther from the stationary plate 320 than the second housing 112.

The cyclone channel 130 and the air outlet 140 are disposed on the first cover 111, and the silencing cavity 120 is disposed on the second cover 112, that is, the silencing cavity 120 and the cyclone channel 130 are arranged in the height direction of the cover 110, so that the flow path of the high-pressure fluid is prolonged, the flow speed of the high-pressure fluid is reduced, energy is consumed in the process, the exhaust pulsation is effectively weakened, and the purposes of silencing and reducing noise are achieved.

Alternatively, the first cover 111 and the second cover 112 may be fixed by welding to improve the connection strength between the first cover 111 and the second cover 112. And fix through the welded mode, can also seal the junction of first cover body 111 and second cover body 112, prevent that the high-pressure air current from leaking in the junction of first cover body 111 and second cover body 112, and then ensure the effective noise abatement effect of amortization cover 100.

As shown in fig. 1, 2, 3 and 4, in some embodiments, optionally, the first cover 111 includes a top cover 1111 and a side cover 1112 connected to each other, where the top cover 1111 and the side cover 1112 enclose a swirl channel 130, the top cover 1111 is disposed opposite to the second cover 112, and the air outlet 140 is disposed on the side cover 1112.

In this embodiment, the first cover 111 is defined to include a top cover 1111 and a side cover 1112, specifically, the top cover 1111 is connected to the side cover 1112, the top cover 1111 is opposite to the second cover 112, the top cover 1111 and the side cover 1112 enclose a swirl channel 130, and the air outlet 140 is provided on the side cover 1112.

That is, the high pressure air is discharged from the exhaust port 321 into the silencing cavity 120, and enters the cyclone channel 130 through the silencing cavity 120, and finally is discharged into the exhaust cavity 311 through the air outlet 140 on the side cover 1112, so that the flow path of the high pressure fluid can be further prolonged, the reflection times of the fluid in the cyclone channel 130 can be increased, and the silencing amount and the oil content effect can be improved.

As shown in fig. 1 and 2, in some embodiments, optionally, the side cover 1112 includes a first cavity wall 150 and a second cavity wall 160, the first cavity wall 150 being disposed opposite the second cavity wall 160; at least a portion of the first cavity wall 150 is configured as a first arcuate wall; and/or at least a portion of the second chamber wall 160 is configured as a second arcuate wall.

In this embodiment, it is defined that the side cover 1112 includes a first cavity wall 150 and a second cavity wall 160, specifically, the first cavity wall 150 and the second cavity wall 160 are disposed opposite to each other. It is understood that the first chamber wall 150 and the second chamber wall 160 are both inner walls of the side cover 1112.

Optionally, at least a portion of the first cavity wall 150 is configured as a first arcuate wall. Alternatively, at least a portion of the second chamber wall 160 is configured as a second arcuate wall. Alternatively, at least a portion of the first chamber wall 150 is configured as a first arcuate wall and at least a portion of the second chamber wall 160 is configured as a second arcuate wall. The setting can be specifically performed according to actual needs.

By providing at least a portion of the first chamber wall 150 and/or at least a portion of the second chamber wall 160 as arcuate walls, the side cover 1112 and the top cover 1111 form a swirl passage 130 that can extend in a clockwise or counterclockwise direction. When the high-pressure fluid flows through the swirl channel 130 and is discharged into the exhaust cavity 311 through the air outlet 140, the high-pressure fluid can flow downwards after flowing a certain distance in the clockwise direction or the anticlockwise direction in the exhaust cavity 311, that is, the flow path of the high-pressure fluid is prolonged, the flow speed of the high-pressure fluid is reduced, the energy is consumed in the process, the exhaust pulsation is effectively weakened, and the purposes of silencing and noise reduction are achieved.

As shown in fig. 2, in some embodiments, optionally, the first arc-shaped wall includes a first arc-shaped section 220 and a second arc-shaped section 230 that are connected, and the centers of the first arc-shaped section 220 and the second arc-shaped section 230 are respectively located on two sides of the first arc-shaped wall; the second arc wall can be overlapped with the first arc wall after rotating 180 ° around the central axis of the cover 110.

In this embodiment, the first arc-shaped wall includes a first arc-shaped section 220 and a second arc-shaped section 230, specifically, the first arc-shaped section 220 and the second arc-shaped section 230 are connected, and the center of the first arc-shaped section 220 and the center of the second arc-shaped section 230 are located on two sides of the first arc-shaped wall, respectively.

Moreover, the second arc wall can be overlapped with the first arc wall after being rotated 180 ° around the central axis of the cover 110. That is, the second arc wall and the first arc wall are disposed symmetrically with respect to the center axis of the cover 110.

Thereby make first arc wall, second arc wall and top casing 1111 form two swirl channels 130 that extend the same, and then make respectively from two gas outlet 140 exhaust high pressure fluid can form the reposition of redundant personnel hedging in the exhaust chamber 311, reduce exhaust noise and the exhaust pulsation of compressor 300 operation in-process, and can also improve the oil content effect, promote the energy efficiency of compressor 300.

As shown in fig. 2, in some embodiments, the second arcuate segment 230 is optionally tangential to the first arcuate segment 220.

In this embodiment, the first arc-shaped section 220 and the second arc-shaped section 230 are defined to be tangent, so that the two swirl channels 130 formed by the first arc-shaped wall and the second arc-shaped wall and having the same extending direction smoothly transition at the joint, and the separation of the high-pressure fluid flowing out of the silencing cavity 120 to the swirl channels 130 on two sides is promoted, thereby improving the diversion effect.

Moreover, the high-pressure fluid discharged from the two air outlets 140 can form split-flow opposite-impact in the air discharge cavity 311, reduce air discharge noise and air discharge pulsation in the operation process of the compressor 300, and also can improve oil content effect and improve energy efficiency of the compressor 300.

As shown in FIG. 3, in some embodiments, the second housing 112 may optionally be provided with a through-flow port 170, and the sound attenuation chamber 120 communicates with the swirl passage 130 through the through-flow port 170; wherein the cross-sectional area of the through-flow orifice 170 is smaller than the cross-sectional area of the swirl passage 130.

In this embodiment, the second cover 112 is defined to be provided with a through-flow port 170, specifically, the silencing chamber 120 is in communication with the cyclone channel 130 through the through-flow port 170, that is, after the high-pressure fluid discharged from the exhaust port 321 of the static disc 320 of the compressor 300 enters the silencing chamber 120, the high-pressure fluid enters the cyclone channel 130 through the through-flow port 170, flows through the cyclone channel 130, and is discharged through the air outlet 140.

The cross-sectional area of the through-flow port 170 is smaller than that of the cyclone channel 130, so that when the high-pressure fluid entering the silencing cavity 120 enters the cyclone channel 130 through the through-flow port 170, the cross-section mutation can occur, the fluid flow path is changed, the fluid flow speed is reduced, the exhaust pulsation is reduced, the exhaust vibration is weakened, and the noise reduction effect and the oil content effect of the compressor 300 with the silencing cover 100 are further improved.

Further, since at least a portion of the swirl passage 130 extends in a clockwise direction, or at least a portion of the swirl passage 130 extends in a counterclockwise direction. Therefore, when the high-pressure fluid flows through the cyclone channel 130 and is discharged into the exhaust cavity 311 through the air outlet 140, the high-pressure fluid can flow downwards after flowing a certain distance in the clockwise direction or the anticlockwise direction in the exhaust cavity 311, that is, the flow path of the high-pressure fluid is prolonged, the flow speed of the high-pressure fluid is reduced, the energy is consumed in the process, the exhaust pulsation is effectively weakened, and the purposes of noise reduction and noise reduction are achieved.

Moreover, when the high-pressure fluid flows through the swirl passage 130 and is discharged into the exhaust chamber 311 through the air outlet 140, the high-pressure fluid can flow downwards after flowing a certain distance in the clockwise direction or the anticlockwise direction in the exhaust chamber 311, the oil content effect can be improved, the oil content is reduced, the oil content efficiency is improved, and the energy efficiency of the compressor 300 with the silencing cover 100 is improved.

As shown in fig. 1, 3 and 4, in some embodiments, the cover 110 is optionally further provided with at least one notch 180, the at least one notch 180 being in communication with the sound attenuation chamber 120.

In this embodiment, it is defined that the cover 110 is further provided with at least one notch 180, specifically, the at least one notch 180 communicates with the sound deadening chamber 120. It can be appreciated that when the high-pressure fluid flows in the silencing cavity 120 and the cyclone channel 130, partial oil-gas separation can also occur, so that the separated lubricating oil can flow out of the silencing cavity 120 through the at least one notch 180, thereby avoiding the influence of the compressor 300 exhaust caused by the accumulation of more lubricating oil in the silencing cavity 120, and further improving the stability and reliability of the compressor 300 in the operation process.

It will be appreciated that the static plate 320 is provided with a flow guiding port 350 communicating with the exhaust cavity 311, and that the lubricant discharged from the at least one notch 180 can flow to the oil sump at the bottom of the compressor 300 through the flow guiding port 350.

Optionally, the height of the at least one notch 180 may be between 0.5mm and 1.5mm along the height direction of the cover 110, so that the noise elimination effect of the noise elimination cover 100 can be ensured, and meanwhile, separated lubricating oil can be ensured to be discharged in time through the at least one notch 180, so that the exhaust effect is ensured. Specifically, the height of the at least one notch 180 is 1mm. The setting can be specifically performed according to actual needs.

As shown in fig. 1 and 3, in some embodiments, optionally, a portion of the cover 110 is bent toward a side facing away from the sound attenuation chamber 120 to form at least one flange 190, the at least one flange 190 being for a secure mounting.

In this embodiment, it is defined that a portion of the cover 110 is bent toward a side facing away from the sound deadening chamber 120 to form at least one turn-up 190, that is, a portion of the cover 110 is bent outward to form the turn-up 190. The flange 190 is used for a fixed mounting, and in particular, the sound attenuating cap 100 is connected to the static disc 320 by at least one flange 190.

Through forming turn-ups 190 with the partly of cover body 110, that is to say, at least one turn-ups 190 and cover body 110 structure as an organic whole to can improve the joint strength between at least one turn-ups 190 and the cover body 110, improve the installation stability of amortization cover 100, and then ensure that amortization cover 100 can effectively make an uproar falls from gas vent 321 exhaust high pressure fluid, improve noise reduction effect and oil content effect, promote compressor 300 energy efficiency.

Further, at least a portion of the swirl passage 130 extends in a clockwise direction, or at least a portion of the swirl passage 130 extends in a counterclockwise direction. Therefore, when the high-pressure fluid flows through the cyclone channel 130 and is discharged into the exhaust cavity 311 through the air outlet 140, the high-pressure fluid can flow downwards after flowing a certain distance in the clockwise direction or the anticlockwise direction in the exhaust cavity 311, that is, the flow path of the high-pressure fluid is prolonged, the flow speed of the high-pressure fluid is reduced, the energy is consumed in the process, the exhaust pulsation is effectively weakened, and the purposes of noise reduction and noise reduction are achieved.

It will be appreciated that when the number of cuffs 190 is multiple, a gap 180 is formed between two adjacent cuffs 190. The setting can be specifically performed according to actual needs.

As shown in fig. 1 and 3, in some embodiments, optionally, at least one flange 190 is provided with at least one mounting hole 191; a portion of the cover body 110 is recessed toward one side of the sound deadening chamber 120 to form at least one escape space 210, and each of the escape spaces 210 communicates with one of the mounting holes 191.

In this embodiment, at least one flange 190 is provided with at least one mounting hole 191, and it is understood that the compressor 300 further includes at least one fastener, and each fastener is connected to the stationary plate 320 through one mounting hole 191, respectively, to achieve mounting and fixing of the muffler cover 100.

It is understood that the number of the mounting holes 191 may be plural to improve the mounting stability between the silencer cover 100 and the static disk 320.

A part of the cover body 110 is recessed toward one side of the sound attenuation chamber 120 to form at least one avoidance space 210, and each avoidance space 210 is communicated with one mounting hole 191, that is, the avoidance spaces 210 are in one-to-one correspondence with the mounting holes 191. Since at least one mounting hole 191 is used for a fixed mounting. By providing at least one avoidance space 210, the installation difficulty of the muffler cover 100 can be reduced, and the installation efficiency can be improved.

According to a second aspect of the present utility model, a compressor 300 is provided, which includes the silencing cover 100 provided in any of the above embodiments, so that all the beneficial technical effects of the silencing cover 100 are provided, and will not be described herein.

As shown in fig. 4, 5, 6 and 7, further, the compressor 300 further includes a housing 310, the housing 310 is provided with a discharge chamber 311, and the discharge chamber 311 communicates with the gas outlet 140; the static disc 320 is arranged in the shell 310, the static disc 320 is provided with an exhaust port 321, the silencing cover 100 is covered on the outer side of the exhaust port 321 and is connected with the static disc 320, and the exhaust port 321 is communicated with the silencing cavity 120; the movable plate 330 and the stationary plate 320 enclose a compression chamber 340, and the compression chamber 340 is communicated with the exhaust port 321.

The compressor 300 provided by the embodiment of the utility model comprises a shell 310, a static disc 320, a movable disc 330 and a silencing cover 100, wherein the shell 310 is provided with an exhaust cavity 311, the static disc 320 and the movable disc 330 are matched to form a compression cavity 340, an exhaust port 321 is arranged on the static disc 320, the silencing cover 100 is covered on the outer side of the exhaust port 321 and is positioned in the exhaust cavity 311, and an air outlet 140 of the silencing cover 100 is communicated with the exhaust cavity 311. Specifically, when the compressor 300 is operated, the compressed high-pressure fluid is discharged from the compression chamber 340 through the exhaust port 321, enters the silencing chamber 120, flows through the swirl channel 130, finally is discharged through the air outlet 140, enters the exhaust chamber 311, and finally is discharged to the outside of the housing 310 through the exhaust pipeline on the housing 310.

Wherein the compressor 300 includes, but is not limited to, a scroll compressor, a rotary compressor. Alternatively, the scroll compressor may be a high pressure chamber scroll compressor or a low pressure chamber scroll compressor.

Optionally, the compressor 300 further includes a suction pipe, which is in communication with the compression chamber 340, specifically, the refrigerant enters the compression chamber 340 from the suction pipe for compression.

Optionally, the housing 310 includes a housing body and an upper cover connected to the housing body to form the exhaust chamber 311, and the sound deadening cap 100 is located between the static disc 320 and the upper cover.

Optionally, the compressor 300 further includes a discharge check valve provided at the discharge port 321, and the discharge check valve is capable of opening or closing the discharge port 321. Specifically, when the compressor 300 is operated, the compressed high-pressure fluid impacts the exhaust check valve through the exhaust port 321, so that the exhaust check valve opens the exhaust port 321, and the high-pressure fluid enters the muffling chamber 120 through the exhaust port 321 and is discharged through the swirl passage 130 and the gas outlet 140, thereby performing exhaust muffling.

When the compressor 300 is shut down, the discharge check valve rapidly drops back to the discharge port 321 to cover the discharge port 321, preventing the high pressure fluid which is not discharged out of the housing 310 from flowing back into the compression chamber 340 through the discharge port 321, thereby causing the problem of reverse rotation of the compressor 300.

In some embodiments, optionally, the spacing between the inner wall of the exhaust cavity 311 and the air outlet 140 of the housing 310 is less than a preset spacing.

In this embodiment, the distance between the air outlet 140 and the inner wall of the housing 310 located in the air exhaust cavity 311 is smaller than the preset distance, that is, the distance between the air outlet 140 and the inner wall of the housing 310 is smaller, that is, the air outlet 140 is as close as possible to the inner wall of the housing 310, so that the high-pressure fluid discharged from the air outlet 140 can quickly reach the inner wall of the housing 310 to perform oil-gas separation, thereby improving the oil-gas separation effect and further improving the energy efficiency of the compressor 300.

In addition, the high-pressure air flow which rapidly reaches the inner wall of the housing 310 can flow downwards after flowing a certain distance in the clockwise direction or the anticlockwise direction in the exhaust cavity 311, that is, the flow path of the high-pressure fluid is prolonged, the flow speed of the high-pressure fluid is reduced, energy is consumed in the process, exhaust pulsation is effectively weakened, and the purposes of silencing and noise reduction are achieved.

As shown in FIG. 4, in some embodiments, the static disk 320 is optionally provided with at least one flow directing port 350, the at least one flow directing port 350 being in communication with the exhaust chamber 311; at least one flow directing opening 350 is offset from the air outlet 140 along the axial direction of the static disk 320.

In this embodiment, it is defined that at least one flow guide port 350 is provided on the stationary plate 320, and the at least one flow guide port 350 communicates with the exhaust chamber 311, that is, the at least one flow guide port 350 penetrates through the stationary plate 320 in the axial direction of the stationary plate 320.

Specifically, the high-pressure fluid discharged from the air outlet 140 to the air discharge chamber 311 flows downward after flowing a certain distance in the clockwise direction or the counterclockwise direction in the air discharge chamber 311, passes through the at least one air guiding opening 350, and is discharged to the outside of the housing 310 through the air discharge pipeline on the housing 310.

Along the axial direction of the static disc 320, at least one flow guiding port 350 is staggered with the air outlet 140, that is, a connecting line between the at least one flow guiding port 350 and the central axis of the static disc 320 and a connecting line between the air outlet 140 and the central axis form a preset angle, so that high-pressure fluid discharged from the air outlet 140 can flow downwards after rotating for a certain distance in the air discharging cavity 311, and the noise elimination effect and the oil separation effect of the compressor 300 are further improved.

Optionally, a preset angle formed between the connecting line between the at least one flow guiding opening 350 and the central axis of the static disc 320 and the connecting line between the air outlet 140 and the central axis is 90 °, so as to further prolong the rotational flow splitting time of the high-pressure fluid discharged from the air outlet 140 in the air discharging cavity 311, improve the noise elimination effect and the oil separation effect, and further improve the energy efficiency of the compressor 300.

According to a third aspect of the present utility model, there is provided a refrigeration apparatus including the muffler 100 provided in the first aspect or the compressor 300 provided in the second aspect, so as to provide all the beneficial technical effects of the muffler 100 or the compressor 300, which are not described herein.

Wherein the refrigeration equipment includes, but is not limited to, an air conditioner.

In the description of the present specification, the terms "connected," "mounted," "secured," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A sound attenuation cover, comprising:

the cover body is provided with a silencing cavity and a rotational flow channel;

the air outlet is arranged on the cover body, and the silencing cavity is communicated with the air outlet through the cyclone channel;

wherein at least a portion of the swirl passage extends in a clockwise or counterclockwise direction.

2. The muffler cover as defined in claim 1, wherein,

the number of the cyclone channels is at least two, and each cyclone channel is communicated with at least one air outlet;

wherein, the extending direction of at least two cyclone channels is the same.

3. The muffler cover as defined in claim 2, wherein,

at least one of the swirl channels can be overlapped with one of the rest of the swirl channels after rotating around the central axis of the cover body by a preset angle.

4. The sound attenuating cover of claim 1, wherein the cover body includes:

a first cover;

the second cover body is connected with the first cover body, and is arranged along the height direction of the cover body with the first cover body, the rotational flow channel and the air outlet are arranged on the first cover body, the silencing cavity is arranged on the second cover body, and the second cover body is used for being fixedly installed.

5. The muffler cover as claimed in claim 4, wherein,

the first cover body comprises a top cover body and a side cover body which are connected, the top cover body and the side cover body are enclosed to form the rotational flow channel, the top cover body and the second cover body are oppositely arranged, and the air outlet is formed in the side cover body.

6. The muffler cover as claimed in claim 5, wherein,

the side cover body comprises a first cavity wall and a second cavity wall, and the first cavity wall and the second cavity wall are arranged opposite to each other;

at least a portion of the first cavity wall is configured as a first arcuate wall; and/or at least a portion of the second cavity wall is configured as a second arcuate wall.

7. The muffler cover as defined in claim 6, wherein,

the first arc-shaped wall comprises a first arc-shaped section and a second arc-shaped section which are connected, and the circle centers of the first arc-shaped section and the second arc-shaped section are respectively positioned at two sides of the first arc-shaped wall;

the second arc-shaped wall can be overlapped with the first arc-shaped wall after rotating 180 degrees around the central axis of the cover body.

8. The muffler cover as defined in claim 7, wherein,

the second arcuate segment is tangential to the first arcuate segment.

9. The muffler cover as claimed in claim 4, wherein,

the second cover body is provided with a through flow port, and the silencing cavity is communicated with the rotational flow channel through the through flow port;

the cross-sectional area of the through flow port is smaller than that of the rotational flow channel.

10. The muffler cover according to any one of claims 1 to 9,

the cover body is also provided with at least one notch, and the at least one notch is communicated with the silencing cavity.

11. The muffler cover according to any one of claims 1 to 9,

and one part of the cover body is bent to one side deviating from the silencing cavity to form at least one flanging, and the at least one flanging is used for fixed installation.

12. The muffler cover as defined in claim 11, wherein,

at least one mounting hole is formed in at least one flanging;

a part of the cover body is recessed to one side of the silencing cavity to form at least one avoidance space, and each avoidance space is communicated with one mounting hole.

13. A compressor, comprising:

the muffler cover as defined in any one of claims 1 to 12;

the shell is provided with an exhaust cavity which is communicated with the air outlet;

The static disc is arranged in the shell, the static disc is provided with an exhaust port, the silencing cover is covered on the outer side of the exhaust port and is connected with the static disc, and the exhaust port is communicated with the silencing cavity;

the movable disc is enclosed with the static disc to form a compression cavity, and the compression cavity is communicated with the exhaust port.

14. The compressor of claim 13, wherein,

the distance between the inner wall of the exhaust cavity and the air outlet of the shell is smaller than a preset distance.

15. A compressor according to claim 13 or 14, characterized in that,

the static disc is provided with at least one diversion port, and at least one diversion port is communicated with the exhaust cavity;

at least one guide port and the air outlet are staggered along the axial direction of the static disc.

16. A refrigeration appliance, comprising:

the muffler cover as defined in any one of claims 1 to 12; or (b)

A compressor as claimed in any one of claims 13 to 15.