CN116201734A - Compressor and air conditioner - Google Patents

Abstract

An embodiment of the present invention provides a compressor and an air conditioner, the compressor including: the shell is provided with a first exhaust port; the compression assembly is arranged in the shell and is provided with a compression cavity and a second exhaust port which are communicated with each other; the back pressure plate is connected with the compression assembly and is provided with an exhaust structure and at least one silencing cavity, the second exhaust port is communicated with the first exhaust port through the exhaust structure, and the at least one silencing cavity is communicated with the exhaust structure. That is, during the process of exhausting the compressor, the flow path is changed due to the fact that part of air flow enters at least one silencing cavity, and sound waves can be reflected in the at least one silencing cavity for multiple times, so that air flow noise during the process of exhausting the compressor is reduced, and overall noise during the operation of the compressor is further reduced.

Description

Compressor and air conditioner

Technical Field

The embodiment of the invention relates to the technical field of compressor equipment, in particular to a compressor and an air conditioner.

Background

The compressor is one of key parts of the air conditioner, and because of the working principle characteristic of the compressor, the noise component is complex, the noise is remarkable in frequency band and the noise control of the compressor directly influences the noise of the whole air conditioner.

In the related art, the refrigerant enters the top cover through the air outlet of the fixed disc, and is discharged through the air outlet of the top cover, however, the noise of the air outlet of the related art is larger, so that the noise of the whole air conditioner is larger, the quality of products is reduced, and the use experience of users is affected.

Disclosure of Invention

Embodiments of the present invention 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 invention provides a compressor.

A second aspect of an embodiment of the present invention provides an air conditioner.

In view of this, according to a first aspect of an embodiment of the present invention, there is provided a compressor including: the shell is provided with a first exhaust port; the compression assembly is arranged in the shell and is provided with a compression cavity and a second exhaust port which are communicated with each other; the back pressure plate is connected with the compression assembly and is provided with an exhaust structure and at least one silencing cavity, the second exhaust port is communicated with the first exhaust port through the exhaust structure, and the at least one silencing cavity is communicated with the exhaust structure.

The compressor provided by the embodiment of the invention comprises a shell, a compression assembly and a back pressing plate, wherein the shell is provided with a first exhaust port, the compression assembly is arranged in the shell, the compression assembly comprises a compression cavity and a second exhaust port, and the second exhaust port is communicated with the compression cavity. It can be understood that the compression assembly comprises a static disc and a movable disc, the static disc and the movable disc enclose to form a compression cavity, the compressor further comprises a motor, the motor drives the movable disc to rotate through a crankshaft, and then gas in the compression cavity is compressed, so that high-temperature and high-pressure gas is formed, passes through a second exhaust port and is discharged through an exhaust structure on a back pressure plate, and finally is discharged out of the shell through a first exhaust port on the shell, so that the process of compressing the gas to exhausting is completed.

The back pressure plate is connected with the compression assembly, and the back pressure plate is provided with exhaust structure and at least one noise elimination chamber, wherein, exhaust structure and first gas vent intercommunication, second gas vent and exhaust structure intercommunication, at least one noise elimination chamber and exhaust structure intercommunication. That is, the gas exhausted through the second exhaust port, when exhausted through the exhaust structure, may partially enter the at least one muffling cavity. It will be appreciated that gas entering the at least one muffling chamber may also flow out of the muffling chamber and out through the exhaust structure to the first exhaust port.

That is, in the process of exhausting the compressor, the flow path is changed due to the fact that part of air flow enters at least one silencing cavity, and sound waves can be reflected in the at least one silencing cavity for multiple times, so that air flow noise during exhausting of the compressor is reduced, overall noise in the operation process of the compressor is reduced, the product quality of an air conditioner with the compressor is improved, and the use experience of a user is improved.

It can be understood that the silencing cavity is a cavity with a certain volume, part of high-temperature high-pressure air flow enters at least one silencing cavity and can flow out of the silencing cavity into the exhaust structure, namely, the flow path of the air flow in the exhaust process is prolonged, so that the reflection times of sound waves in the exhaust process are increased, and the silencing effect of the compressor in the exhaust process is improved.

In practical application, the quantity of sound attenuation chamber is a plurality of, and a plurality of sound attenuation chamber are along circumference interval distribution, through setting up a plurality of sound attenuation chamber, can make most air current when exhausting, get into a plurality of sound attenuation intracavity reflection noise elimination first back, discharge to first gas vent again, further improve the noise elimination volume of compressor operation in-process.

It should be noted that the cross-sectional shape of the sound-absorbing chamber may be set according to actual needs. Specifically, the cross-sectional shape of the sound-damping cavity may be a rectangular, annular or other cavity having a certain volume.

In addition, it can be understood that a plurality of mounting holes are further formed in the back pressure plate, the plurality of mounting holes are arranged at intervals, or the plurality of mounting holes are staggered with the plurality of silencing cavities, and the back pressure plate is connected with the compression assembly through the plurality of mounting holes. The space between the cavity walls of two adjacent silencing cavities along the circumferential direction, or the minimum distance between the hole wall of one adjacent mounting hole and the cavity wall of the silencing cavity along the circumferential direction is larger than 3mm, so that the tightness of gas in the silencing cavity is ensured.

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

in one possible embodiment, at least one of the sound-damping chambers has an opening, which extends to the end face of the back pressure plate facing the compression assembly.

In this solution, it is defined that at least one sound-damping chamber is provided with an opening, and that the opening extends to the end face of the back pressure plate facing the side of the compression assembly, that is to say that the at least one sound-damping chamber is a sound-damping channel open at one end. When the back pressure plate is connected with the compression assembly, an acoustic cavity communicated with the exhaust structure is formed.

Through setting up the opening with at least one silence chamber, can increase the volume in silence chamber, and then increase the volume of the gas that enters into the silence intracavity, improve the noise elimination effect when the compressor is discharged. In addition, through increasing the volume of sound attenuation chamber, can lengthen the flow path of air current in the sound attenuation intracavity, increase the reflection number of times of sound wave in the sound attenuation intracavity, further reduce the whole noise of compressor operation in-process.

In one possible technical scheme, the number of the silencing cavities is multiple, and the silencing cavities are distributed at intervals along the circumferential direction of the back pressing plate.

In the technical scheme, the number of the sound-eliminating cavities is multiple, the sound-eliminating cavities are distributed at intervals along the circumferential direction of the back pressing plate, and by arranging the sound-eliminating cavities, most of air flow firstly enters the sound-eliminating cavities for internal reflection and elimination when the air flow is exhausted, and then is exhausted to the first exhaust port, so that the sound-eliminating amount in the operation process of the compressor is further improved.

It can be understood that the silencing cavity is a cavity with a certain volume, part of high-temperature high-pressure air flow enters the silencing cavities and can flow out of the silencing cavities into the exhaust structure, namely, the flow path of the air flow in the exhaust process is prolonged, so that the reflection times of sound waves in the exhaust process are increased, and the silencing effect of the compressor in the exhaust process is improved.

In one possible technical scheme, the back pressure plate comprises a mounting part, the mounting part is connected with the compression assembly, and at least one silencing cavity is arranged on the mounting part; the axial depth H of at least one sound-eliminating cavity and the axial thickness B of the mounting part are more than or equal to 0.5B and less than or equal to 0.8B.

In this solution, it is defined that the back pressure plate comprises a mounting portion, in particular, the mounting portion is connected with the compression assembly. In practical application, a plurality of mounting holes are distributed on the mounting portion at intervals, so that the mounting portion is connected with the compression assembly through the plurality of mounting holes. At least one anechoic chamber sets up on the installation department, can understand that the back pressure board includes body and installation department, and installation department and body coupling, exhaust structure set up on the body.

The axial depth H of at least one sound-eliminating cavity and the axial thickness B of the mounting part meet the requirement that H is more than or equal to 0.5B and less than or equal to 0.8B, namely the axial depth of at least one sound-eliminating cavity is limited. The axial depth of the at least one sound-eliminating cavity is limited to 0.5B to 0.8B, so that the volume of the at least one sound-eliminating cavity can be ensured, the reflection times of sound waves in the sound-eliminating cavity after air flow flows into the sound-eliminating cavity are increased, and the sound-eliminating effect of the compressor in exhaust is improved.

It can be understood that if the axial depth of at least one of the muffling chambers is too small, i.e., H is less than 0.5B, the volume of the muffling chamber is small, and the air flow flows out quickly after entering the muffling chamber, which is not beneficial to reducing exhaust noise. Meanwhile, if the axial depth of at least one silencing cavity is too large, namely H is larger than 0.8B, the axial thickness of the installation part at the silencing cavity is smaller, the structural strength is poor, and gas leakage is easy to occur when high-pressure air flows rush into the silencing cavity for multiple times.

In one possible technical scheme, the compressor further comprises at least one communication groove, the at least one communication groove is arranged in one-to-one correspondence with the at least one silencing cavity, and each silencing cavity is communicated with the exhaust structure through one communication groove.

In this technical solution, the compressor is defined to further include at least one communication groove, specifically, the at least one communication groove is disposed in one-to-one correspondence with the at least one muffling cavity, that is, each muffling cavity corresponds to one communication groove, and each muffling cavity is communicated with the exhaust structure through one communication groove. After entering the exhaust cavity through the second exhaust port, part of the high-temperature and high-pressure gas is discharged out of the shell through the first exhaust port, enters the at least one sound-eliminating cavity through the at least one communication groove to eliminate sound, and is discharged to the first exhaust port through the exhaust cavity and the at least one exhaust port, so that the process of compressing the gas to exhaust is completed.

Through setting up the intercommunication groove with at least one silence chamber one-to-one, that is to say, after the air current gets into exhaust structure, through the intercommunication groove earlier, reentrant silence intracavity can change the flow path of air current, prolongs the flow time of air current, and then increases the sound wave and at the intercommunication groove and the reflection number of times in silence intracavity, improves the noise elimination effect when the compressor is discharged.

In one possible embodiment, the circumferential width of the at least one communication groove is smaller than the circumferential width of the sound-damping chamber in communication with the communication groove.

In this technical solution, the circumferential width of at least one communication groove is smaller than the circumferential width of the sound-damping chamber communicating with the communication groove. It can be appreciated that the at least one sound damping cavity comprises a first sound damping cavity, the at least one communication groove comprises a first communication groove, and the exhaust structure is communicated with the first sound damping cavity through the first communication groove, wherein the circumferential width of the first communication groove is smaller than the circumferential width of the first sound damping cavity.

That is, the circumferential width of at least one communication groove is set smaller, so that when the air flow enters the sound-absorbing cavity through the communication groove, the cross section of the air flow is suddenly changed, the flow path of the air flow is changed, and the purpose of exhausting and sound-absorbing is achieved.

And the circumferential width of at least one communication groove is smaller, so that the stay time of gas in the silencing cavity is prolonged, the reflection times of sound waves in the silencing cavity are increased, and the silencing quantity of the compressor in exhausting is further improved.

In one possible solution, the circumferential width of the at least one communication groove is smaller than or equal to the axial depth of the communication groove.

In this aspect, the circumferential width of at least one communication groove is smaller than or equal to the axial depth of the communication groove, that is, the circumferential width of the first communication groove is smaller than or equal to the axial depth of the first communication groove. Namely, the circumferential width of at least one communication groove is smaller, so that when the air flow enters the sound-absorbing cavity through the communication groove, the section mutation can occur, the flow path of the air flow is changed, and the purpose of exhausting and sound-absorbing is achieved.

And the circumferential width of at least one communication groove is smaller, so that the stay time of gas in the silencing cavity is prolonged, the reflection times of sound waves in the silencing cavity are increased, and the silencing quantity of the compressor in exhausting is further improved.

In one possible technical scheme, the axial depth H of at least one silencing cavity and the axial depth H of a communication groove communicated with the silencing cavity meet the condition that H is more than or equal to 0.5 and less than or equal to 0.8.

In the technical scheme, H is more than or equal to 0.5H and less than or equal to 0.8H between the axial depth of at least one silencing cavity and the axial depth of a communication groove communicated with the silencing cavity. That is, 0.5 H.ltoreq.h.ltoreq.0.8H is satisfied between the axial depth of the first sound-deadening chamber and the axial depth of the first communication groove. Namely, the axial depth of at least one communication groove is smaller than that of the sound-absorbing cavity, so that when the air flow enters the sound-absorbing cavity through the communication groove, the section mutation can occur, the flow path of the air flow is changed, and the purpose of exhausting and sound-absorbing is achieved.

And the axial depth of at least one communication groove is set smaller, so that the stay time of gas in the silencing cavity is prolonged, the reflection times of sound waves in the silencing cavity are increased, and the silencing quantity of the compressor in exhausting is further improved.

In one possible technical scheme, the back pressure plate further comprises a first side wall positioned in the sound-absorbing cavity, and the first side wall is arranged close to the outer edge of the back pressure plate; the minimum distance e between the first side wall and the outer edge of the back pressing plate along the radial direction meets the requirement that e is more than or equal to 3mm.

In this technical scheme, it still includes the first lateral wall that is located the silence intracavity to inject the back pressure board, and first lateral wall is close to the outward flange setting of back pressure board, i.e. the back pressure board still includes the second lateral wall that is located the silence intracavity, and the second lateral wall sets up with first lateral wall relatively, and the first lateral wall sets up near the outward flange of back pressure board compared with the second lateral wall, and the second lateral wall sets up near the center of back pressure board compared with the first lateral wall, that is to say, second lateral wall and first lateral wall are radially inside and outside distribution.

Further, the minimum distance between the first side wall and the outer edge of the back pressure plate along the radial direction is larger than 3mm, so that the tightness of the silencing cavity can be ensured, and the problem that the performance and efficiency of the compressor are affected due to the fact that gas entering the silencing cavity leaks from the outer edge of the back pressure plate is prevented.

In one possible technical scheme, the back pressure plate further comprises a second side wall which is positioned in the sound-eliminating cavity and is opposite to the first side wall, and the second side wall is arranged far away from the outer edge of the back pressure plate compared with the first side wall; the first side wall and/or the second side wall are configured as arc-shaped walls.

In this technical scheme, the back pressure plate includes the first lateral wall and the second lateral wall that are located the sound attenuation intracavity, and first lateral wall and second lateral wall set up relatively, and first lateral wall is close to the outward flange setting of back pressure plate compared with the second lateral wall, and the second lateral wall is close to the center setting of back pressure plate compared with first lateral wall, that is to say, second lateral wall and first lateral wall are along radial inside and outside distribution.

The first side wall and/or the second side wall are/is arc-shaped walls, specifically, the first side wall may be an arc-shaped wall, or the second side wall may be an arc-shaped wall, or the first side wall and the second side wall are arc-shaped walls, and specifically, the first side wall and the second side wall may be set according to actual needs.

It will be appreciated that the configuration of the first and second side walls may be designed according to the shape of the back pressure plate, and in particular, when the cross-sectional shape of the back pressure plate is circular, the first and/or second side walls may be provided as arcuate walls to match the configuration of the back pressure plate.

It is worth to say that, the back pressure board still includes the third lateral wall and the fourth lateral wall that are located the sound attenuation intracavity, and the third lateral wall links to each other with first lateral wall and second lateral wall, and the fourth lateral wall links to each other with first lateral wall and second lateral wall, and wherein, third lateral wall and/or fourth lateral wall are the arc wall. The setting can be specifically performed according to actual needs.

In one possible solution, the exhaust structure comprises an exhaust chamber and at least one exhaust channel, wherein the exhaust chamber is in communication with the at least one sound attenuation chamber and the second exhaust port, and the at least one exhaust channel is in communication with the exhaust chamber and the first exhaust port.

In this solution, the exhaust structure is defined to comprise an exhaust chamber and at least one exhaust channel, in particular the exhaust chamber communicates with the second exhaust port and with the at least one sound-damping chamber, the at least one exhaust channel communicating with the first exhaust port and with the exhaust chamber. That is, after the compressed high-temperature high-pressure gas enters the exhaust cavity through the second exhaust port, part of the high-temperature high-pressure gas passes through at least one exhaust channel and is exhausted out of the shell through the first exhaust port, and after part of the high-temperature high-pressure gas enters at least one silencing cavity to be silenced, part of the high-temperature high-pressure gas is exhausted to the first exhaust port through the exhaust cavity and the at least one exhaust channel, so that the process from compression to exhaust of the gas is completed.

That is, in the process of exhausting the compressor, the flow path is changed due to the fact that part of air flow enters at least one silencing cavity, and sound waves can be reflected in the at least one silencing cavity for multiple times, so that air flow noise during exhausting of the compressor is reduced, overall noise in the operation process of the compressor is reduced, the product quality of an air conditioner with the compressor is improved, and the use experience of a user is improved.

In addition, it can be understood that the compressor still includes the relief valve, and the relief valve sets up in the quiet dish one side that deviates from the movable plate, and the relief valve can open or close the compression chamber, through setting up the exhaust chamber, can also provide the space of dodging for the installation of relief valve.

In practical application, the quantity of exhaust passage is a plurality of, and a plurality of exhaust passages are along the radial interval distribution of back pressure board to can reduce the exhaust resistance of air current, reduce the exhaust pulsation and the exhaust noise of compressor in the exhaust process, further improve the holistic sound attenuation of compressor in the operation process.

In one possible embodiment, the number of the exhaust passages is plural, and the plural exhaust passages communicate with each other at one end near the second exhaust port.

In the technical scheme, the number of the exhaust channels is limited to be multiple, so that the exhaust resistance of air flow can be reduced, the exhaust pulsation and the exhaust noise of the compressor in the exhaust process are reduced, and the overall noise reduction of the compressor in the operation process is further improved.

The plurality of exhaust channels are mutually communicated at one end close to the second exhaust port, that is, the plurality of exhaust channels are mutually communicated at the inlet of the air flow, so that the compressor can adapt to different working conditions of the compressor. And the airflow is split at the airflow inlets of the plurality of exhaust channels, and the flow path of the airflow is changed, so that the exhaust pulsation and the exhaust noise of the airflow are reduced.

It will be appreciated that the compressor further includes a check valve disposed on the back pressure plate and that the check valve is axially movable relative to the back pressure plate to be adjacent to or remote from the second discharge port. Specifically, during the exhaust, the high-pressure gas can push the check valve to move to one side far away from the second exhaust port so as to reduce the exhaust resistance; when the compressor is stopped, high-pressure gas flowing out of the exhaust channel can flow back and flow back through the through hole at the top of the back pressure plate, so that the check valve is pushed to move to one side close to the second exhaust port, the second exhaust port is partially covered, the high-pressure gas is reduced to flow back into the compression cavity through the second exhaust port, and the problem of reverse rotation of the compressor after the compressor is stopped is solved.

The radial interval distribution of a plurality of exhaust passage along the back pressure board, because the check valve generally sets up the central point of back pressure board, through radial distribution with a plurality of exhaust passage, can make at least one exhaust passage avoid the check valve setting, avoid the check valve to shelter from at least one exhaust passage at axial motion's in-process, and then influence exhaust efficiency's problem.

According to a second aspect of the present invention, there is provided an air conditioner, including a compressor according to any of the above-mentioned aspects, so as to provide all the beneficial technical effects of the compressor, which are not described herein.

Additional aspects and advantages of the invention 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 invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention 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 illustrates a structural schematic view of a compressor according to an embodiment of the present invention;

FIG. 2 shows one of the schematic structural views of a back platen according to one embodiment of the present invention;

FIG. 3 shows a second schematic structural view of a back platen according to one embodiment of the present invention;

FIG. 4 shows a third schematic structural view of a back platen according to one embodiment of the present invention;

FIG. 5 shows a fourth schematic structural view of a back platen according to one embodiment of the present invention.

The correspondence between the reference numerals and the component names in fig. 1 to 5 is:

100 compressors, 110 casings, 111 first exhaust ports, 120 compression assemblies, 121 compression chambers, 122 second exhaust ports, 130 back pressure plates, 131 mounting portions, 132 first side walls, 133 second side walls, 140 exhaust structures, 141 exhaust chambers, 142 exhaust channels, 150 muffler chambers, 160 communication grooves.

Detailed Description

In order that the above-recited objects, features and advantages of the present invention will be more clearly understood, a more particular description of the invention 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 invention, however, the present invention may be practiced otherwise than as described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.

A compressor 100 and an air conditioner provided according to some embodiments of the present invention are described below with reference to fig. 1 to 5.

In one embodiment according to the present application, as shown in fig. 1, 2, 3, 4 and 5, a compressor 100 is proposed, the compressor 100 comprising: a housing 110, the housing 110 being provided with a first exhaust port 111; the compression assembly 120 is arranged in the shell 110, and the compression assembly 120 is provided with a compression cavity 121 and a second exhaust port 122 which are communicated; the back pressure plate 130 is connected with the compression assembly 120, the back pressure plate 130 is provided with an exhaust structure 140 and at least one silencing cavity 150, the second exhaust port 122 is communicated with the first exhaust port 111 through the exhaust structure 140, and the at least one silencing cavity 150 is communicated with the exhaust structure 140.

The compressor 100 provided by the embodiment of the invention comprises a shell 110, a compression assembly 120 and a back pressure plate 130, specifically, the shell 110 is provided with a first exhaust port 111, the compression assembly 120 is arranged in the shell 110, the compression assembly 120 comprises a compression cavity 121 and a second exhaust port 122, and the second exhaust port 122 is communicated with the compression cavity 121. It can be understood that the compression assembly 120 includes a stationary disc and a movable disc, the stationary disc and the movable disc enclose a compression chamber 121, the compressor 100 further includes a motor, the motor drives the movable disc to rotate through a crankshaft, and further compresses gas in the compression chamber 121, thereby forming high-temperature and high-pressure gas, the high-temperature and high-pressure gas passes through the second exhaust port 122 and is exhausted through the exhaust structure 140 on the back pressure plate 130, and finally is exhausted outside the housing 110 through the first exhaust port 111 on the housing 110, thereby completing the process of compressing the gas to exhausting.

The back pressure plate 130 is connected with the compression assembly 120, and the back pressure plate 130 is provided with an exhaust structure 140 and at least one muffling cavity 150, wherein the exhaust structure 140 is communicated with the first exhaust port 111, the second exhaust port 122 is communicated with the exhaust structure 140, and the at least one muffling cavity 150 is communicated with the exhaust structure 140. That is, the gas discharged through the second exhaust port 122, when discharged through the exhaust structure 140, may partially enter the at least one muffling chamber 150. It can be appreciated that the gas entering the at least one muffling chamber 150 can also flow out of the muffling chamber 150 and be exhausted through the exhaust structure 140 to the first exhaust port 111.

That is, in the process of exhausting the compressor 100, a flow path is changed due to the fact that part of air flow enters into at least one silencing cavity 150, and sound waves can be reflected in the at least one silencing cavity 150 for multiple times, so that air flow noise when the compressor 100 is exhausted is reduced, overall noise in the operation process of the compressor 100 is reduced, the quality of an air conditioner with the compressor 100 is improved, and the use experience of a user is improved.

It can be appreciated that the muffler chamber 150 is a cavity having a certain volume, and a portion of the high-temperature and high-pressure air flow enters at least one muffler chamber 150 and can flow out of the muffler chamber 150 into the exhaust structure 140, i.e. the flow path of the air flow in the exhaust process is prolonged, so that the reflection times of the sound wave in the exhaust process are increased, and the noise elimination effect of the compressor 100 in the exhaust process is improved.

In practical application, the number of the silencing cavities 150 is multiple, and the silencing cavities 150 are distributed at intervals along the circumferential direction, so that most of air flows can be discharged to the first exhaust port 111 after being reflected and silenced in the silencing cavities 150 when being exhausted by arranging the silencing cavities 150, and the silencing amount of the compressor 100 in the operation process is further improved.

It should be noted that the cross-sectional shape of the muffler chamber 150 may be set according to actual needs. Specifically, the cross-sectional shape of the sound-damping chamber 150 may be a rectangular, annular, or the like cavity having a certain volume.

In addition, it can be appreciated that the back pressure plate 130 is further provided with a plurality of mounting holes, the plurality of mounting holes are spaced apart, or the plurality of mounting holes are staggered with the plurality of sound attenuation chambers 150, and the back pressure plate 130 is connected to the compression assembly 120 through the plurality of mounting holes. The space between the chamber walls of two adjacent sound-deadening chambers 150 in the circumferential direction, or the minimum distance between the wall of the hole of one of the adjacent mounting holes and the chamber wall of the sound-deadening chamber 150 in the circumferential direction is greater than 3mm, thereby ensuring the tightness of the gas in the sound-deadening chamber 150.

As shown in fig. 2, 3, 4 and 5, further, in the above embodiment, at least one of the muffler chambers 150 has an opening, and at least one opening extends to an end surface of the back pressure plate 130 facing the compression assembly 120.

In this embodiment, it is defined that at least one of the sound damping chambers 150 is provided with an opening, and the opening extends to an end face of the back pressure plate 130 toward the compression assembly 120 side, that is, at least one of the sound damping chambers 150 is a sound damping groove opened at one end. When the back pressure plate 130 is coupled to the compression assembly 120, a sound damping chamber 150 is formed in communication with the exhaust structure 140.

By providing at least one of the sound-deadening chambers 150 with an opening, the volume of the sound-deadening chamber 150 can be increased, and thus the amount of gas entering the sound-deadening chamber 150 can be increased, and the sound-deadening effect at the time of exhausting the compressor 100 can be improved. In addition, by increasing the volume of the sound-deadening chamber 150, the flow path of the air flow in the sound-deadening chamber 150 can be prolonged, the number of reflections of the sound wave in the sound-deadening chamber 150 can be increased, and the overall noise during the operation of the compressor 100 can be further reduced.

As shown in fig. 2, 3, 4 and 5, further, based on the above embodiment, the number of the sound-deadening chambers 150 is plural, and the plural sound-deadening chambers 150 are distributed at intervals along the circumferential direction of the back pressure plate 130.

In this embodiment, the number of the silencing cavities 150 is defined to be multiple, and the multiple silencing cavities 150 are distributed at intervals along the circumferential direction of the back pressure plate 130, so that when the air flow is exhausted, most of the air flow enters the multiple silencing cavities 150 to be reflected and silenced before being exhausted to the first exhaust port 111, and the silencing amount of the compressor 100 in the operation process is further improved.

It can be appreciated that the muffler chamber 150 is a cavity having a certain volume, and part of high-temperature and high-pressure air flows into the plurality of muffler chambers 150 and can flow out of the plurality of muffler chambers 150 into the exhaust structure 140, that is, the flow path of the air flow in the exhaust process is prolonged, so that the reflection times of sound waves in the exhaust process are increased, and the muffler effect of the compressor 100 in the exhaust process is improved.

As shown in fig. 2, 3, 4 and 5, further, based on the above embodiment, the back pressure plate 130 includes a mounting portion 131, the mounting portion 131 is connected to the compression assembly 120, and at least one sound-damping chamber 150 is provided at the mounting portion 131; the axial depth H of the at least one sound-deadening chamber 150 and the axial thickness B of the mounting portion 131 satisfy 0.5 B.ltoreq.H.ltoreq.0.8B.

In this embodiment, it is defined that the back pressure plate 130 includes a mounting portion 131, and in particular, the mounting portion 131 is connected with the compression assembly 120. In practical applications, the plurality of mounting holes are spaced apart on the mounting portion 131, so that the mounting portion 131 is connected to the compression assembly 120 through the plurality of mounting holes. At least one muffling chamber 150 is provided on the mounting portion 131, and it can be understood that the back pressure plate 130 includes a body and the mounting portion 131, the mounting portion 131 is connected with the body, and the exhaust structure 140 is provided on the body.

The axial depth H of the at least one sound-deadening chamber 150 and the axial thickness B of the mounting portion 131 satisfy 0.5 b.ltoreq.h.ltoreq.0.8B, i.e. define the axial depth of the at least one sound-deadening chamber 150. By limiting the axial depth of the at least one sound-deadening chamber 150 to 0.5B to 0.8B, the volume of the at least one sound-deadening chamber 150 can be ensured, the number of reflections of sound waves in the sound-deadening chamber 150 after the air flow flows into the sound-deadening chamber 150 can be increased, and thus the sound-deadening effect when the compressor 100 is exhausted can be improved.

It can be appreciated that if the axial depth of at least one of the muffling chambers 150 is too small, i.e., H is less than 0.5B, the volume of the muffling chamber 150 is small, and the air flows out quickly after entering the muffling chamber 150, which is not beneficial to reducing exhaust noise. Meanwhile, if the axial depth of at least one of the silencing chambers 150 is too large, i.e., H is greater than 0.8B, the axial thickness of the mounting portion 131 at the silencing chamber 150 is smaller, the structural strength is worse, and gas leakage is likely to occur when high-pressure air flows are flushed into the silencing chamber 150 for multiple times.

As shown in fig. 2, 3, 4 and 5, further, the compressor 100 further includes at least one communication groove 160, where the at least one communication groove 160 is disposed in a one-to-one correspondence with the at least one sound-deadening chamber 150, and each sound-deadening chamber 150 communicates with the exhaust structure 140 through one communication groove 160.

In this embodiment, the compressor 100 is defined to further include at least one communication groove 160, specifically, the at least one communication groove 160 is disposed in one-to-one correspondence with the at least one sound damping chamber 150, that is, each sound damping chamber 150 corresponds to one communication groove 160, and each sound damping chamber 150 communicates with the exhaust structure 140 through one communication groove 160. That is, after the compressed high-temperature and high-pressure gas enters the exhaust chamber 141 through the second exhaust port 122, part of the high-temperature and high-pressure gas passes through the at least one exhaust channel 142 and is exhausted out of the housing 110 through the first exhaust port 111, and part of the high-temperature and high-pressure gas enters the at least one silencing chamber 150 through the at least one communication groove 160 to be silenced, and is then exhausted to the first exhaust port 111 through the exhaust chamber 141 and the at least one exhaust channel 142, thereby completing the process of compressing the gas to exhaust.

Through setting up the intercommunication groove 160 that corresponds with at least one silence chamber 150 one by one, that is to say, the air current gets into exhaust structure 140 after, first through intercommunication groove 160, reentrant silence chamber 150 is interior, can change the flow path of air current, prolongs the flow time of air current, and then increases the reflection number of times of sound wave in intercommunication groove 160 and in silence chamber 150, improves the noise elimination effect when compressor 100 is discharged.

As shown in fig. 2, 3, 4 and 5, further, on the basis of the above-described embodiment, the circumferential width of at least one communication groove 160 is smaller than the circumferential width of the sound damping chamber 150 communicating with the communication groove 160.

In this embodiment, the circumferential width of at least one communication groove 160 is smaller than the circumferential width of the sound damping chamber 150 in communication with the communication groove 160. It can be appreciated that the at least one sound damping cavity 150 comprises a first sound damping cavity, the at least one communication groove 160 comprises a first communication groove, and the exhaust structure 140 communicates with the first sound damping cavity through the first communication groove, wherein a circumferential width of the first communication groove is smaller than a circumferential width of the first sound damping cavity.

That is, the circumferential width of at least one communication groove 160 is set smaller, so that when the air flow enters the sound-damping cavity 150 through the communication groove 160, the cross section of the air flow is suddenly changed, the flow path of the air flow is changed, and the purpose of exhausting and damping sound is achieved.

In addition, the circumferential width of at least one communication groove 160 is set smaller, so that the residence time of the gas in the sound-deadening chamber 150 is prolonged, the number of reflections of the sound wave in the sound-deadening chamber 150 is increased, and the sound-deadening amount when the compressor 100 is discharged is further increased.

As shown in fig. 2, further, on the basis of the above-described embodiment, the circumferential width of at least one communication groove 160 is smaller than or equal to the axial depth of the communication groove 160.

In this embodiment, the circumferential width of at least one communication groove 160 is less than or equal to the axial depth of the communication groove 160, that is, the circumferential width of the first communication groove is less than or equal to the axial depth of the first communication groove. Namely, the circumferential width of at least one communication groove 160 is smaller, so that when the air flow enters the sound-absorbing cavity 150 through the communication groove 160, the cross section of the air flow is suddenly changed, the flow path of the air flow is changed, and the purpose of exhausting and sound-absorbing is achieved.

In addition, the circumferential width of at least one communication groove 160 is set smaller, so that the residence time of the gas in the sound-deadening chamber 150 is prolonged, the number of reflections of the sound wave in the sound-deadening chamber 150 is increased, and the sound-deadening amount when the compressor 100 is discharged is further increased.

Further, as shown in fig. 2, on the basis of the above embodiment, the axial depth H of at least one muffling chamber 150 and the axial depth H of the communicating groove 160 communicating with the muffling chamber 150 satisfy 0.5 h.ltoreq.h.ltoreq.0.8H.

In this embodiment, 0.5 H.ltoreq.h.ltoreq.0.8H is satisfied between the axial depth of at least one muffling chamber 150 and the axial depth of the communication groove 160 that communicates with the muffling chamber 150. That is, 0.5 H.ltoreq.h.ltoreq.0.8H is satisfied between the axial depth of the first sound-deadening chamber and the axial depth of the first communication groove. That is, the axial depth of at least one communication groove 160 is smaller than that of the sound-absorbing cavity 150, so that when the air flow enters the sound-absorbing cavity 150 through the communication groove 160, the cross section of the air flow is suddenly changed, the flow path of the air flow is changed, and the purpose of exhausting and silencing is achieved.

In addition, the axial depth of at least one communication groove 160 is set smaller, so that the residence time of the gas in the muffling cavity 150 is prolonged, the number of reflections of sound waves in the muffling cavity 150 is increased, and the muffling amount of the compressor 100 during exhaust is further increased.

As shown in fig. 3, further, in the above embodiment, the back pressure plate 130 further includes a first sidewall 132 located in the sound-damping chamber 150, and the first sidewall 132 is disposed near an outer edge of the back pressure plate 130; the minimum distance e in the radial direction between the first sidewall 132 and the outer edge of the back pressure plate 130 satisfies e.gtoreq.3 mm.

In this embodiment, the back pressure plate 130 is defined to further include a first sidewall 132 positioned within the sound-reducing cavity 150, the first sidewall 132 being disposed proximate to an outer edge of the back pressure plate 130, i.e., the back pressure plate 130 further includes a second sidewall 133 positioned within the sound-reducing cavity 150, the second sidewall 133 being disposed opposite the first sidewall 132, the first sidewall 132 being disposed proximate to an outer edge of the back pressure plate 130 as compared to the second sidewall 133, the second sidewall 133 being disposed proximate to a center of the back pressure plate 130 as compared to the first sidewall 132, i.e., the second sidewall 133 being radially inwardly and outwardly disposed from the first sidewall 132.

Further, the minimum distance between the first sidewall 132 and the outer edge of the back pressure plate 130 in the radial direction is greater than 3mm, so that the sealability of the sound-deadening chamber 150 can be ensured, and the leakage of the gas entering into the sound-deadening chamber 150 from the outer edge of the back pressure plate 130 can be prevented, thereby affecting the performance and efficiency of the compressor 100.

As shown in fig. 2, further, based on the above embodiment, the back pressure plate 130 further includes a second sidewall 133 disposed in the sound-damping chamber 150 opposite to the first sidewall 132, and the second sidewall 133 is disposed away from an outer edge of the back pressure plate 130 compared to the first sidewall 132; the first side wall 132 and/or the second side wall 133 are configured as arc-shaped walls.

In this embodiment, the back platen 130 includes a first sidewall 132 and a second sidewall 133 located in the sound-reducing chamber 150, and the first sidewall 132 is disposed opposite to the second sidewall 133, the first sidewall 132 is disposed near an outer edge of the back platen 130 compared to the second sidewall 133, and the second sidewall 133 is disposed near a center of the back platen 130 compared to the first sidewall 132, that is, the second sidewall 133 and the first sidewall 132 are distributed radially inside-out.

The first side wall 132 and/or the second side wall 133 are/is an arc wall, specifically, the first side wall 132 may be an arc wall, or the second side wall 133 may be an arc wall, or both the first side wall 132 and the second side wall 133 are arc walls, which may be specifically set according to actual needs.

It can be appreciated that the structures of the first and second sidewalls 132 and 133 may be designed according to the shape of the back pressure plate 130, and in particular, when the cross-sectional shape of the back pressure plate 130 is circular, the first and/or second sidewalls 132 and 133 may be provided as arc-shaped walls to match the structure of the back pressure plate 130.

It should be noted that, the back pressure plate 130 further includes a third sidewall and a fourth sidewall disposed in the sound-absorbing cavity 150, the third sidewall is connected to the first sidewall 132 and the second sidewall 133, and the fourth sidewall is connected to the first sidewall 132 and the second sidewall 133, where the third sidewall and/or the fourth sidewall is an arc-shaped wall. The setting can be specifically performed according to actual needs.

As shown in fig. 1, 2, 3, 4 and 5, further, on the basis of any of the above embodiments, the exhaust structure 140 includes an exhaust chamber 141 and at least one exhaust passage 142, wherein the exhaust chamber 141 communicates with the at least one muffling chamber 150 and the second exhaust port 122, and the at least one exhaust passage 142 communicates with the exhaust chamber 141 and the first exhaust port 111.

In this embodiment, the exhaust structure 140 is defined to include an exhaust cavity 141 and at least one exhaust passage 142, specifically, the exhaust cavity 141 communicates with the second exhaust port 122 and the at least one muffling cavity 150, and the at least one exhaust passage 142 communicates with the first exhaust port 111 and the exhaust cavity 141. That is, after the compressed high-temperature and high-pressure gas enters the exhaust chamber 141 through the second exhaust port 122, part of the high-temperature and high-pressure gas passes through the at least one exhaust channel 142 and is exhausted to the outside of the housing 110 through the first exhaust port 111, and part of the high-temperature and high-pressure gas enters the at least one muffling chamber 150 to be muffled and is then exhausted to the first exhaust port 111 through the exhaust chamber 141 and the at least one exhaust channel 142, thereby completing the process of compressing the gas to exhaust.

That is, in the process of exhausting the compressor 100, a flow path is changed due to the fact that part of air flow enters into at least one silencing cavity 150, and sound waves can be reflected in the at least one silencing cavity 150 for multiple times, so that air flow noise when the compressor 100 is exhausted is reduced, overall noise in the operation process of the compressor 100 is reduced, the quality of an air conditioner with the compressor 100 is improved, and the use experience of a user is improved.

In addition, it can be appreciated that the compressor 100 further includes a relief valve disposed at a side of the stationary plate facing away from the movable plate, the relief valve being capable of opening or closing the compression chamber 121, and providing an avoidance space for installation of the relief valve by providing the exhaust chamber 141.

In practical application, the number of the exhaust channels 142 is plural, and the exhaust channels 142 are distributed along the radial direction of the back pressure plate 130 at intervals, so that the exhaust resistance of the air flow can be reduced, the exhaust pulsation and the exhaust noise of the compressor 100 in the exhaust process can be reduced, and the overall noise reduction of the compressor 100 in the operation process can be further improved.

In a specific embodiment, further, the number of the exhaust passages 142 is plural, and the plural exhaust passages 142 communicate with each other at one end near the second exhaust port 122.

In this embodiment, the number of the exhaust passages 142 is defined to be plural, so that the exhaust resistance of the air flow can be reduced, the exhaust pulsation and the exhaust noise of the compressor 100 during the exhaust process can be reduced, and the overall sound-deadening amount of the compressor 100 during the operation can be further improved.

The plurality of exhaust passages 142 are connected to each other at an end near the second exhaust port 122, that is, the plurality of exhaust passages 142 are connected to each other at the inlet of the air flow, which can adapt to different working conditions of the compressor 100. And the air flow is split at the air flow inlets of the plurality of exhaust passages 142, changing the flow path of the air flow, thereby reducing exhaust pulsation and exhaust noise of the air flow.

It can be appreciated that the compressor 100 further includes a check valve disposed on the back pressure plate 130, and that the check valve is axially movable relative to the back pressure plate 130 to be adjacent to or remote from the second discharge port 122. Specifically, during the exhaust, the high pressure gas may push the check valve to move to a side far from the second exhaust port 122 to reduce the exhaust resistance; when the compressor is stopped, the high-pressure gas flowing out of the exhaust channel 142 flows back and flows back through the through hole at the top of the back pressure plate 130, so that the check valve is pushed to move to one side close to the second exhaust port 122, so as to partially cover the second exhaust port 122, reduce the backflow of the high-pressure gas into the compression cavity 121 through the second exhaust port 122, and further cause the problem of reverse rotation of the compressor 100 after the stop.

The plurality of exhaust channels 142 are distributed along the radial direction of the back pressure plate 130 at intervals, and the check valves are generally arranged at the center of the back pressure plate 130, so that the at least one exhaust channel 142 can avoid the check valves by radially distributing the plurality of exhaust channels 142, and the problem that the check valves shield the at least one exhaust channel 142 in the axial movement process and further affect the exhaust efficiency is avoided.

According to a second aspect of the present invention, an air conditioner is provided, which includes the compressor 100 provided in any of the above embodiments, so that all the beneficial technical effects of the compressor 100 are provided, and are not described herein.

In practice, compressors include, but are not limited to, scroll compressors.

Specifically, the compression assembly 120 includes a stationary disc and a movable disc, the stationary disc and the movable disc enclose to form a compression chamber 121, the compressor 100 further includes a motor, the motor drives the movable disc to rotate through a crankshaft, and further compresses gas in the compression chamber 121, thereby forming high-temperature and high-pressure gas, the high-temperature and high-pressure gas passes through the second exhaust port 122 and is exhausted through the exhaust structure 140 on the back pressure plate 130, and finally is exhausted to the outside of the housing 110 through the first exhaust port 111 on the housing 110, thereby completing the process of compressing the gas to exhaust.

The back pressure plate 130 is connected with the compression assembly 120, and the back pressure plate 130 is provided with an exhaust structure 140 and at least one muffling cavity 150, wherein the exhaust structure 140 is communicated with the first exhaust port 111, the second exhaust port 122 is communicated with the exhaust structure 140, and the at least one muffling cavity 150 is communicated with the exhaust structure 140. That is, the gas discharged through the second exhaust port 122, when discharged through the exhaust structure 140, may partially enter the at least one muffling chamber 150. It can be appreciated that the gas entering the at least one muffling chamber 150 can also flow out of the muffling chamber 150 and be exhausted through the exhaust structure 140 to the first exhaust port 111.

That is, in the process of exhausting the compressor 100, a flow path is changed due to the fact that part of air flow enters into at least one silencing cavity 150, and sound waves can be reflected in the at least one silencing cavity 150 for multiple times, so that air flow noise when the compressor 100 is exhausted is reduced, overall noise in the operation process of the compressor 100 is reduced, the quality of an air conditioner with the compressor 100 is improved, and the use experience of a user is improved.

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

Claims (13)

1. A compressor, comprising:

the shell is provided with a first exhaust port;

the compression assembly is arranged in the shell and is provided with a compression cavity and a second exhaust port which are communicated with each other;

the back pressure plate is connected with the compression assembly, the back pressure plate is provided with an exhaust structure and at least one silencing cavity, the second exhaust port is communicated with the first exhaust port through the exhaust structure, and the at least one silencing cavity is communicated with the exhaust structure.

2. The compressor of claim 1, wherein,

at least one of the muffling chambers has an opening, and at least one of the openings extends to an end surface of the back pressure plate facing the compression assembly side.

3. The compressor of claim 1, wherein,

the number of the silencing cavities is multiple, and the silencing cavities are distributed at intervals along the circumferential direction of the back pressing plate.

4. The compressor of claim 1, wherein,

the back pressure plate comprises a mounting part, the mounting part is connected with the compression assembly, and the at least one silencing cavity is arranged on the mounting part;

the axial depth H of at least one sound-eliminating cavity and the axial thickness B of the mounting part are 0.5B-0.8B.

5. The compressor of claim 1, further comprising:

and the at least one communication groove is arranged in one-to-one correspondence with the at least one silencing cavity, and each silencing cavity is communicated with the exhaust structure through one communication groove.

6. The compressor of claim 5, wherein,

at least one of the communication grooves has a circumferential width smaller than a circumferential width of the sound-deadening chamber communicating with the communication groove.

7. The compressor of claim 5, wherein,

at least one of the communication grooves has a circumferential width less than or equal to an axial depth of the communication groove.

8. The compressor of claim 5, wherein,

the axial depth H of at least one silencing cavity and the axial depth H of the communication groove communicated with the silencing cavity are more than or equal to 0.5H and less than or equal to 0.8H.

9. A compressor according to any one of claims 1 to 8, wherein,

the back pressure plate further comprises a first side wall positioned in the silencing cavity, and the first side wall is arranged close to the outer edge of the back pressure plate;

and the minimum distance e between the first side wall and the outer edge of the back pressure plate along the radial direction meets the requirement that e is more than or equal to 3mm.

10. The compressor of claim 9, wherein,

the back pressure plate further comprises a second side wall which is positioned in the sound-absorbing cavity and is opposite to the first side wall, and the second side wall is arranged far away from the outer edge of the back pressure plate compared with the first side wall;

the first side wall and/or the second side wall is configured as an arc-shaped wall.

11. The compressor of any one of claims 1 to 8, wherein the discharge structure includes:

An exhaust chamber in communication with at least one of the sound attenuation chamber and the second exhaust port;

at least one exhaust passage communicates with the exhaust chamber and the first exhaust port.

12. The compressor of claim 11, wherein,

the number of the exhaust passages is plural, and the plural exhaust passages are communicated with each other at one end near the second exhaust port.

13. An air conditioner comprising the compressor according to any one of claims 1 to 12.

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