CN111878394A

CN111878394A - Compressor and refrigeration equipment

Info

Publication number: CN111878394A
Application number: CN202010900232.8A
Authority: CN
Inventors: 李小雷; 江波; 刘俊波; 钱灿宇; 黄柏英; 新宅秀信; 饗场靖
Original assignee: Guangdong Midea Environmental Technologies Co Ltd
Current assignee: Guangdong Midea Environmental Technologies Co Ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2020-11-03

Abstract

The invention provides a compressor and refrigeration equipment, wherein the compressor comprises: a scroll pack including a pressure chamber; the back pressure element is connected with the scroll assembly, and a discharge cavity is formed on one side of the back pressure element, which is far away from the scroll assembly; the first channel is arranged on the back pressure element and communicated with the pressure chamber and the discharge cavity; and the bypass switch is arranged in the first channel and is configured to be suitable for conducting or closing the first channel. According to the compressor provided by the invention, the first channel is controlled to be opened or closed through the bypass switch, so that the amount of a medium compressed in the pressure chamber can be flexibly adjusted, the amount of the compressed medium is matched with an actual demand, and the adaptability of the compressor is improved.

Description

Compressor and refrigeration equipment

Technical Field

The invention relates to the technical field of compressors, in particular to a compressor and refrigeration equipment.

Background

The compressor can compress media such as refrigerants and the like, and further refrigeration or heating is achieved. During the use of the compressor, different ambient temperatures require different amounts of compression of the medium. In the related art, the compression amount of the medium cannot be adjusted according to the ambient temperature, and thus the compression amount of the medium output by the compressor is not matched with the actual demand.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art.

To this end, a first aspect of the present invention provides a compressor.

In a second aspect, the present invention provides a refrigeration apparatus.

A first aspect of the present invention provides a compressor comprising: a scroll pack including a pressure chamber; the back pressure element is connected with the scroll assembly, and a discharge cavity is formed on one side of the back pressure element, which is far away from the scroll assembly; the first channel is arranged on the back pressure element and communicated with the pressure chamber and the discharge cavity; and the bypass switch is arranged in the first channel and is configured to be suitable for conducting or closing the first channel.

The compressor proposed by the present invention comprises: the scroll assembly, a back pressure member, a first passage, and a bypass switch. Wherein the scroll assembly includes a pressure chamber into which a medium entering the pressure chamber can be compressed. The back pressure element is connected with the scroll assembly, a discharge cavity is formed on one side of the back pressure element, which is far away from the scroll assembly, and a medium compressed in the pressure chamber can flow into the discharge cavity. In addition, a first channel is arranged on the back pressure element and penetrates through the back pressure element. An inlet of the first passage communicates with the pressure chamber, and an outlet of the first passage communicates with the discharge chamber. The bypass switch is arranged in the first channel and can be used for controlling the conduction of the first channel or controlling the closing of the first channel.

In the operation process of the compressor, when the bypass switch is in a closed state, the first channel is closed, and the pressure chamber is disconnected with the discharge cavity; at this time, all the medium in the pressure chamber is compressed and discharged. When the bypass switch is in an opening state, the first channel is communicated, and the pressure chamber is communicated with the discharge cavity; at this time, a part of the medium in the pressure chamber is not compressed in the pressure chamber, but directly enters the discharge chamber through the first passage, and another part of the medium in the pressure chamber is compressed in the pressure chamber and then discharged. Therefore, the compressor provided by the invention can adjust the compressed medium quantity through the matching of the bypass switch and the first channel, and further adjust the output capacity of the compressor.

That is, according to the compressor provided by the invention, the bypass switch is used for controlling the opening or closing of the first channel, so that the amount of the medium compressed in the pressure chamber can be flexibly adjusted, the compressed medium amount is matched with the actual requirement, and the adaptability of the compressor is improved.

Specifically, when the compressor is applied to an air conditioner, the internal medium of the compressor is a refrigerant, and the demand of the refrigerant is different under different environments. For example, the demand for refrigerant is higher in summer than in spring and autumn. Therefore, for the compressor provided by the invention, the bypass switch can be closed when the demand on the refrigerant is high, so that all the refrigerant is compressed, and the bypass switch can be opened when the demand on the refrigerant is low, so that part of the refrigerant is directly discharged without being compressed.

The compressor according to the above technical aspect of the present invention may further have the following additional technical features:

in the above technical solution, the first channel includes: the bypass chamber is arranged on the back pressure element and communicated with the pressure chamber, and the bypass switch is positioned in the bypass chamber; and the bypass channel is arranged on the back pressure element and communicated with the bypass chamber and the discharge cavity.

In this solution, the first passage comprises a bypass chamber and a bypass passage. Wherein the bypass chamber and the bypass passage are both provided on the back pressure member, and both communicate with each other. Specifically, a bypass chamber is provided on a side of the back pressure member adjacent to the pressure chamber and communicates with the pressure chamber, and a bypass passage is provided on a side of the back pressure member adjacent to the discharge chamber and communicates with the discharge chamber. In addition, the bypass chamber has a radial or transverse dimension that is greater than the radial or transverse dimension of the bypass passage such that there is sufficient space inside the bypass chamber to locate the bypass switch within the bypass chamber.

Specifically, the bypass switch is disposed at an intersection of the bypass chamber and the bypass passage. When the bypass switch is in an opening state, a part of medium in the pressure chamber is extruded in the pressure chamber and enters the bypass chamber through the bypass switch; the medium in the bypass chamber then passes through the bypass channel into the discharge chamber.

In any of the above embodiments, the scroll assembly further comprises a discharge chamber; the compressor further includes a second passage disposed on the back pressure member and communicating with the discharge chamber and the discharge chamber.

In this solution, the scroll assembly further comprises a discharge chamber into which a medium compressed in the pressure chamber can enter during operation of the compressor. In addition, the compressor also comprises a second channel, wherein the second channel is arranged on the back pressure element and penetrates through the back pressure element; the inlet of the second passage is communicated with the discharge chamber, and the outlet of the second passage is communicated with the discharge cavity.

In particular, both the first and second passages are independent of each other, are provided at different positions of the back pressure member, and communicate with different chambers. Because the first channel and the second channel are respectively arranged, two different thermodynamic property fluids do not interfere with each other in the operation process of the compressor, and the airflow pulsation is effectively reduced. And the first channel and the second channel are divided by the cylinder in the back pressure plate, so that the flow velocity loss of gas is small in the exhaust process, and the gas directly enters the discharge cavity, and the flow loss of the gas flow is small.

Specifically, when the bypass switch is turned on, the first passage is opened, and the pressure chamber and the discharge chamber are communicated with each other. At the moment, a part of the medium in the pressure chamber is not compressed in the pressure chamber, but directly enters the discharge cavity through the first channel; the other part of the medium in the pressure chamber enters the discharge chamber after being compressed in the pressure chamber and is discharged into the discharge cavity through the second channel. And the medium after the medium that does not compress in the first passageway can not carry out heat and mass exchange with the medium after the compression in the second passageway for exhaust gas flow is stable, under the over-compression operating mode, can not produce a large amount of gas backward flows.

Specifically, in the case where the bypass switch is opened, the first passage is closed, and the pressure chamber and the discharge chamber are disconnected. At this point all the medium in the pressure chamber is compressed and then discharged through the second passage into the discharge chamber.

In any of the above embodiments, the scroll assembly comprises: a first scroll which can perform a revolving motion; a second scroll positioned between the first scroll and the back pressure member, the second scroll and the first scroll together forming a pressure chamber and a discharge chamber; the third channel is arranged on the second scroll plate and communicated with the pressure chamber and the first channel; and a fourth passage provided on the second scroll and communicating with the discharge chamber and the second passage.

In this solution, the scroll plate assembly includes a first scroll plate and a second scroll plate that are used in cooperation. Wherein, first vortex dish and second vortex dish all have disk body and vortex, and the vortex setting is between two disk bodies, and then forms pressure chamber and discharge chamber between first vortex dish and second vortex dish. In addition, the first scroll may perform an orbital motion, thereby causing the first scroll to orbit relative to the second scroll to compress the medium entering the pressure chamber.

In addition, a third passage and a fourth passage are provided on the second scroll. The third channel is communicated with the pressure chamber and the first channel, so that part of the medium in the pressure chamber can directly enter the discharge cavity under the condition that the bypass switch is opened. The fourth passage communicates with the discharge chamber and the second passage to ensure that the medium in the discharge chamber enters the second passage. And the third passage and the fourth passage are provided at different positions on the second scroll, independently of each other.

In any of the above technical solutions, the compressor further includes: the scroll assembly and the back pressure element are arranged in the shell; the floating plate is positioned in the shell and is connected with the back pressure element; the baffle is positioned in the shell and arranged on the floating plate, and the baffle and the shell jointly form a discharge cavity.

In this technical scheme, the compressor still includes casing, floating plate and baffle. The vortex disk assembly, the back pressure element, the floating plate and the partition plate are arranged inside the shell, the floating plate is connected with the back pressure element, the partition plate is arranged on the floating plate, and the partition plate and the shell jointly form a discharge cavity.

Specifically, along the height direction of the shell, a partition plate is arranged above the scroll assembly, a floating plate is arranged above the back pressure element, the partition plate is arranged above the floating plate, and the floating plate and the upper part of the shell jointly form a discharge cavity.

In any technical scheme, a groove is formed in one end, away from the first scroll, of the second scroll, and the back pressure element is arranged in the groove; the middle part of the back pressure element is provided with a bulge, an installation position is formed between the bulge and the side wall of the groove, and the floating plate is arranged in the installation position.

In the technical scheme, a groove is formed in an inwards concave manner on one end face of the second scroll, which is far away from the first scroll, and the back pressure element is directly arranged in the groove; the middle part of back pressure spare is provided with the arch for the middle part of back pressure spare has formed the cylinder that is higher than the edge, and forms the installation position between the lateral wall of cylinder and recess, directly with the kickboard set up in the installation position can. In particular, based on the above optimization, the sealing requirements between the back-pressure element and the second scroll are greatly reduced.

In any of the above technical solutions, the compressor further includes: the first sealing element is arranged between the floating plate and the second scroll; a second sealing member disposed between the floating plate and the back pressure member; and the sealing gasket is arranged between the back pressure element and the second scroll.

In this solution, the compressor further comprises a first seal, a second seal, and a sealing gasket. The first sealing element is arranged between the floating plate and the second scroll plate and can seal a gap between the floating plate and the second scroll plate; the second sealing element is arranged between the back pressure element and the second scroll plate and can seal a gap between the floating plate and the back pressure element; the sealing gasket is arranged between the back pressure element and the second scroll plate and can seal a gap between the back pressure element and the second scroll plate.

Particularly, due to the arrangement of the groove in the second scroll and the cylinder in the middle of the back pressure element, the requirement on the sealing gasket can be effectively reduced, the design and assembly difficulty of the compressor is greatly reduced, and the cost of the compressor is reduced.

In any of the above technical solutions, the compressor further includes: a regulation chamber formed between the back pressure element and the floating plate; and the drainage channel is arranged on the second scroll plate, an inlet of the drainage channel is communicated with the pressure chamber, and an outlet of the drainage channel is communicated with the regulating chamber.

In this solution, the compressor further comprises a regulation chamber and a drainage channel. Wherein the regulation chamber is formed between the back pressure element and the floating plate, and the regulation chamber and the pressure chamber are located at opposite sides of the back pressure element. The drainage channel is arranged on the second scroll plate, an inlet of the drainage channel is communicated with the pressure chamber, and an outlet of the drainage channel is communicated with the adjusting chamber. Due to the arrangement of the drainage channels with the multiple sections, the situation that the drainage pressure directly penetrates through the back pressure element can be avoided, the complexity and the sealing performance of the structure of the back pressure element are reduced, meanwhile, the requirement for a sealing gasket between the back pressure element and the second scroll is reduced, and only the intermediate pressure of the pressure chamber and the exhaust pressure of the first channel are divided.

And, the second scroll may have a regulation chamber formed thereon, the regulation chamber having an intermediate pressure between the discharge pressure and the suction pressure, and the regulation chamber may be formed on an upper end surface of the second scroll. That is, by forming the regulation chamber, the first scroll and the second scroll can be contacted with each other with an appropriate force, leakage of the medium can be prevented, and lubrication can be increased, while the contact force can be adjusted, friction of the contact can be reduced, but sealability is not lowered.

In any of the above embodiments, the scroll assembly further comprises: the rotating shaft is connected with the first scroll plate; and a suction chamber formed between the first scroll and the second scroll.

In this solution, the compressor further comprises a rotating shaft and a suction chamber. The rotating shaft is arranged in the shell and extends along the height direction of the shell. The first scroll is connected with the rotating shaft and can perform rotary motion under the driving of the rotating shaft, and then the first scroll is matched with the second scroll to compress media. In addition, a suction chamber is formed between the first scroll and the second scroll, and a pressure chamber is simultaneously communicated with the suction chamber and the discharge chamber. In the operation process of the compressor, the suction chamber sucks medium, the medium in the suction chamber enters the intermediate pressure chamber to be compressed, and the compressed medium enters the discharge chamber and is finally discharged out of the compressor.

A second aspect of the present invention provides a refrigeration apparatus comprising: a compressor according to any one of the preceding claims.

The refrigeration equipment provided by the invention comprises the compressor in any technical scheme. Therefore, all the advantages of the compressor are achieved, and are not discussed in detail herein.

Specifically, the refrigeration equipment provided by the invention comprises but is not limited to: air conditioners, refrigerators, freezers, display cases, and the like.

In any of the above solutions, the back pressure element is a pressed plate, and the bypass switch may be a bypass valve.

In any of the above technical solutions, the first scroll is a movable scroll, and the second scroll is a fixed scroll.

In any of the above technical solutions, the first channel is a bypass path, and the second channel is a discharge path.

In any of the above technical solutions, the casing is an upper casing of the compressor, and the discharge chamber is an upper casing space.

In any of the above technical solutions, the compressor is a scroll compressor.

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 above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a sectional view of a compressor in accordance with one embodiment of the present invention;

fig. 2 is a sectional view of the compressor shown in fig. 1 after a second scroll, a back pressure member and a floating plate are connected;

fig. 3 is a cross-sectional view of the back pressure element in another direction in the structure shown in fig. 2.

Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 3 is:

102 first scroll, 104 second scroll, 106 pressure chamber, 108 back-pressure element, 110 first passage, 1102 bypass chamber, 1104 bypass passage, 112 bypass switch, 114 discharge chamber, 116 second passage, 118 third passage, 120 fourth passage, 122 float plate, 124 housing, 126 first seal, 128 second seal, 130 flow-directing passage, 132 shaft, 134 cylinder.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

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 specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.

A compressor and a refrigerating apparatus provided according to some embodiments of the present invention will be described with reference to fig. 1 to 3.

The first embodiment is as follows:

as shown in fig. 1, 2 and 3, a first embodiment of the present invention proposes a compressor including: scroll assembly, back pressure element 108, first passage 110 and bypass switch 112; the scroll assembly includes a pressure chamber 106.

Wherein the scroll assembly includes a pressure chamber 106, as shown in figure 2, the medium entering the pressure chamber 106 may be compressed. A back pressure element 108 is arranged in connection with the scroll pack and a discharge chamber is formed in the side of the back pressure element 108 facing away from the scroll pack, into which discharge chamber the medium compressed inside the pressure chamber 106 can flow.

Further, as shown in fig. 3, the back pressure member 108 is provided with a first passage 110, and the first passage 110 is provided to penetrate the back pressure member 108. An inlet of the first passage 110 communicates with the pressure chamber 106, and an outlet of the first passage 110 communicates with the discharge chamber. The bypass switch 112 is disposed in the first channel 110, and can be used to control turning on the first channel 110 or to control turning off the first channel 110.

Specifically, during operation of the compressor, when the bypass switch 112 is in the closed state, the first passage 110 is closed, and the pressure chamber 106 and the discharge chamber are disconnected; at this time, all the medium in the pressure chamber 106 is compressed and discharged. When the bypass switch 112 is in the open state, the first passage 110 is conducted, and the pressure chamber 106 is communicated with the discharge chamber; at this time, a part of the medium in the pressure chamber 106 is not compressed in the pressure chamber 106, but directly enters the discharge chamber through the first passage 110, and another part of the medium in the pressure chamber 106 is compressed in the pressure chamber 106 and then discharged. Therefore, the compressor of the present embodiment can adjust the amount of the compressed medium and further adjust the output capacity of the compressor by the cooperation of the bypass switch 112 and the first channel 110.

That is, in the compressor provided in this embodiment, the bypass switch 112 controls the opening or closing of the first channel 110, so that the amount of the medium compressed in the pressure chamber 106 can be flexibly adjusted, the amount of the medium compressed matches with the actual requirement, and the adaptability of the compressor is improved.

In the specific embodiment, when the compressor is applied to an air conditioner, the medium inside the compressor is a refrigerant, and the demand of the refrigerant is different under different environments. For example, the demand for refrigerant is higher in summer than in spring and autumn. Therefore, for the compressor provided in this embodiment, the bypass switch 112 may be turned off when the demand for the refrigerant is high, so that all the refrigerant is compressed, and the bypass switch 112 may be turned on when the demand for the refrigerant is low, so that part of the refrigerant is directly discharged without being compressed.

Example two:

as shown in fig. 1, 2 and 3, a second embodiment of the present invention provides a compressor including: scroll assembly, back pressure element 108, first passage 110 and bypass switch 112; the scroll pack includes a pressure chamber 106; the first passage 110 includes a bypass chamber 1102 and a bypass passage 1104.

Further, as shown in fig. 3, a bypass chamber 1102 and a bypass passage 1104 are provided on the back pressure member 108, and both communicate with each other. Specifically, the bypass chamber 1102 is provided on a side of the back pressure member 108 close to the pressure chamber 106 and communicates with the pressure chamber 106, and the bypass passage 1104 is provided on a side of the back pressure member 108 close to the discharge chamber and communicates with the discharge chamber.

Further, as shown in FIG. 3, the bypass chamber 1102 has a radial or transverse dimension that is greater than the radial or transverse dimension of the bypass passage 1104 such that there is sufficient space inside the bypass chamber 1102 to locate the bypass switch 112 within the bypass chamber 1102.

Specifically, as shown in FIG. 2, the bypass switch 112 is disposed at the intersection of the bypass chamber 1102 and the bypass passage 1104. When the bypass switch 112 is in an open state, a part of the medium in the pressure chamber 106 is squeezed in the pressure chamber 106 and enters the bypass chamber 1102 through the bypass switch 112; and then through the bypass passage 1104 into the discharge chamber.

In addition, like the first embodiment, the present embodiment has all the advantages of the first embodiment, and will not be discussed herein.

Example three:

as shown in fig. 1, 2 and 3, a third embodiment of the present invention provides a compressor including: scroll assembly, back pressure element 108, first passage 110, bypass switch 112, and second passage 116; the scroll assembly includes a pressure chamber 106 and a discharge chamber 114.

Wherein the scroll assembly includes a pressure chamber 106, as shown in figure 2, the medium entering the pressure chamber 106 may be compressed. A back pressure element 108 is arranged in connection with the scroll pack and a discharge chamber is formed in the side of the back pressure element 108 facing away from the scroll pack, into which discharge chamber the medium compressed inside the pressure chamber 106 can flow. As shown in fig. 2 and 3, the back pressure member 108 is provided with a first passage 110, a bypass switch 112 is provided in the first passage 110, and an inlet of the first passage 110 communicates with the pressure chamber 106 and an outlet of the first passage 110 communicates with the discharge chamber. By cooperating with the first channel 110 via the bypass switch 112, the amount of medium being compressed can be adjusted, thereby adjusting the output capacity of the compressor. This advantageous effect is the same as in the first and second embodiments, and will not be discussed in detail here.

Further, as shown in FIG. 2, the scroll assembly also includes a discharge chamber 114, and the medium compressed in the pressure chamber 106 may enter the discharge chamber 114 during operation of the compressor. In addition, as shown in fig. 3, the compressor further includes a second passage 116, the second passage 116 being provided on the back pressure member 108 and being provided through the back pressure member 108; an inlet of the second passage 116 communicates with the discharge chamber 114, and an outlet of the second passage 116 communicates with the discharge chamber.

Specifically, as shown in fig. 3, both the first passage 110 and the second passage 116 are independent of each other, are provided at different positions of the back pressure member 108, and communicate with different chambers. Because the first channel 110 and the second channel 116 are respectively arranged, two different thermodynamic property fluids do not interfere with each other in the operation process of the compressor, and the air flow pulsation is effectively reduced. Also, the first passage 110 and the second passage 116 are divided by the back pressure plate inner cylinder 134, and flow loss to the gas is small during the exhaust process, and flow loss is small by directly entering the exhaust chamber.

In one embodiment, when the bypass switch 112 is turned on, the first passage 110 is opened, and the pressure chamber 106 is communicated with the discharge chamber. At this time, a part of the medium in the pressure chamber 106 is not compressed in the pressure chamber 106, but directly enters the discharge chamber through the first passage 110; another portion of the medium in the pressure chamber 106 is compressed in the pressure chamber 106, enters the discharge chamber 114, and is discharged into the discharge chamber through the second passage 116. In addition, the uncompressed medium in the first channel 110 does not exchange heat and mass with the compressed medium in the second channel 116, so that the exhaust gas flow is stable, and a large amount of gas backflow cannot be generated under the over-compression condition.

In a particular embodiment, with the bypass switch 112 open, the first passage 110 is closed and the pressure chamber 106 and the discharge chamber are disconnected. At this point, all of the medium in the pressure chamber 106 is compressed and then discharged into the discharge chamber through the second passage 116.

In this embodiment, further, as shown in FIG. 1, the scroll assembly includes a first scroll 102 and a second scroll 104 that cooperate. Wherein the first scroll 102 and the second scroll 104 each have a disk body and a wrap, the wrap being disposed between the two disk bodies, thereby forming a pressure chamber 106 and a discharge chamber 114 between the first scroll 102 and the second scroll 104. Furthermore, the first scroll 102 may perform a gyratory motion, thereby causing the first scroll 102 to gyrate relative to the second scroll 104 to compress the medium entering the pressure chamber 106.

Further, as shown in fig. 2, the second scroll 104 is provided with a third passage 118 and a fourth passage 120. The third passage 118 is connected to the pressure chamber 106 and the first passage 110, and ensures that a part of the medium in the pressure chamber 106 can directly enter the discharge chamber when the bypass switch 112 is opened. The fourth passage 120 communicates with the discharge chamber 114 and the second passage 116, and is secured in the medium second passage 116 in the discharge chamber 114. Also, the third passage 118 and the fourth passage 120 are provided at different positions on the second scroll 104, independently of each other.

In this embodiment, further, as shown in fig. 1 and 2, the compressor further includes a shell 124, a floating plate 122, and a partition plate. The scroll assembly, the back pressure element 108, the floating plate 122 and the partition plate are all arranged inside the shell 124, the floating plate 122 is connected with the back pressure element 108, the partition plate is arranged on the floating plate 122, and the partition plate and the shell 124 form a discharge cavity together.

Specifically, as shown in fig. 2, a partition plate is disposed above the scroll assembly, a floating plate 122 is disposed above the back pressure element 108, and the partition plate is disposed above the floating plate 122 in the height direction of the casing 124, the floating plate 122 forming a discharge chamber together with the upper portion of the casing 124.

In this embodiment, further, as shown in fig. 2, an end face of the second scroll 104 facing away from the first scroll 102 is concavely formed with a groove, and a back pressure element 108 is directly provided inside this groove; the middle of the back pressure member 108 is provided with a protrusion so that a cylinder 134 higher than the edge is formed at the middle of the back pressure member 108, and an installation site is formed between the cylinder 134 and the sidewall of the groove, and the floating plate 122 is directly disposed in the installation site. In particular, based on the above optimization, the sealing requirements between back-pressure element 108 and second scroll 104 are greatly reduced.

In this embodiment, further, as shown in fig. 2, the compressor further includes a first seal 126, a second seal 128, and a sealing gasket. A first seal 126 is provided between the floating plate 122 and the second scroll 104, and may seal a gap between the floating plate 122 and the second scroll 104; a second seal 128 is provided between the back pressure element 108 and the second scroll 104, and may seal a gap between the floating plate 122 and the back pressure element 108; the sealing gasket is provided between the back pressure element 108 and the second scroll 104, and may seal a gap between the back pressure element 108 and the second scroll 104.

Particularly, due to the arrangement of the groove on the second scroll 104 and the cylinder 134 in the middle of the back pressure element 108, the requirement for a sealing gasket can be effectively reduced, so that the design and assembly difficulty of the compressor is greatly reduced, and the cost of the compressor is reduced.

In this embodiment, further, as shown in fig. 2, the compressor further includes a regulation chamber and a diversion channel 130. Wherein a regulation chamber is formed between the back pressure element 108 and the floating plate 122, and the regulation chamber and the pressure chamber 106 are located on opposite sides of the back pressure element 108. A flow-inducing passage 130 is provided on the second scroll 104, and an inlet of the flow-inducing passage 130 communicates with the pressure chamber 106 and an outlet of the flow-inducing passage 130 communicates with the regulation chamber.

It should be noted that, due to the arrangement of the multi-section diversion channel 130, the diversion pressure can be prevented from directly passing through the back pressure element 108, the complexity and the sealing performance of the structure of the back pressure element 108 are reduced, and the sealing gasket between the back pressure element 108 and the second scroll 104 is required to be reduced, and only the intermediate pressure of the pressure chamber 106 and the exhaust pressure of the first channel 110 are divided.

Also, the second scroll 104 is formed with a regulation chamber having an intermediate pressure between the discharge pressure and the suction pressure, and the regulation chamber may be formed at an upper end surface of the second scroll 104. That is, by forming the regulation chamber, the first scroll 102 and the second scroll 104 can be in contact with each other with an appropriate force, leakage of the medium can be prevented, and lubrication can be increased, while the contact force can be regulated, friction of the contact can be reduced, but sealability is not lowered.

In this embodiment, further, as shown in fig. 1, the compressor further includes a suction chamber and a rotating shaft 132. Wherein, the rotating shaft 132 is disposed inside the casing and extends along the height direction of the casing. The first scroll 102 is connected to the rotating shaft 132, and can perform a revolving motion under the driving of the rotating shaft 132, so as to cooperate with the second scroll 104 to compress the medium. Further, a suction chamber is formed between the first scroll 102 and the second scroll 104, and the pressure chamber 106 communicates with both the suction chamber and the discharge chamber 114. During operation of the compressor, the suction chamber draws in medium, the medium in the suction chamber enters the intermediate pressure chamber 106 to be compressed, and the compressed medium enters the discharge chamber 114 and is finally discharged from the compressor.

In either of the above embodiments, as shown in FIG. 2, the back pressure element 108 is a depressible plate and the bypass switch 112 may be a bypass valve.

In any of the above embodiments, as shown in fig. 1 and 2, the first scroll 102 is a orbiting scroll and the second scroll 104 is a fixed scroll.

In any of the above embodiments, as shown in fig. 2 and 3, the first passage 110 is a bypass path, and the second passage 116 is a discharge path.

In any of the above embodiments, the regulation chamber is a back pressure regulation chamber.

In any of the above embodiments, the housing 124 is an upper housing of the compressor, and the discharge chamber is an upper housing space.

Example four:

a fourth embodiment of the present invention provides a refrigeration apparatus including: a compressor according to any one of the above embodiments (this embodiment is not shown in the drawings).

The refrigeration equipment provided by the embodiment comprises the compressor provided by any one of the embodiments. Therefore, all the advantages of the compressor are achieved, and are not discussed in detail herein.

Specifically, the refrigeration device proposed in this embodiment includes, but is not limited to: air conditioners, refrigerators, freezers, display cases, and the like.

The specific embodiment is as follows:

as shown in fig. 1, 2 and 3, the present embodiment provides a scroll compressor and a scroll assembly and a discharge path for the scroll compressor. This scroll compressor includes: the scroll compressor includes a casing, a casing 124, a main frame, a first scroll 102 supported by the main frame, and a second scroll 104 forming a suction chamber, a pressure chamber 106, and a discharge chamber 114 with the first scroll 102. The scroll compressor also includes a back pressure member 108 and a floating plate 122 that cooperate with the second scroll 104. The back pressure element 108 and the floating plate 122 form a regulation chamber, and the back pressure element 108 and the upper end surface of the second scroll 104 form a first passage 110 and a second passage 116, which are respectively arranged; the first passage 110 discharges the medium in the pressure chamber 106 to the discharge chamber when the bypass switch 112 is opened, and the second passage 116 discharges the medium in the discharge chamber 114 to the discharge chamber.

As shown in fig. 2 and fig. 3, according to the technical solutions provided by the embodiments, the first channel 110 and the second channel 116 are respectively disposed, so that two fluids with different thermodynamic properties do not interfere with each other during the discharging process, and the fluid loss is effectively reduced. Specifically, the back pressure element 108 is a pressed plate, the bypass switch 112 is a bypass valve, the first scroll 102 is a movable scroll, and the second scroll 104 is a fixed scroll; the first passage 110 is a bypass path, and the second passage 116 is a discharge path; the discharge chamber is the upper housing 124 space.

Specifically, as shown in fig. 1, a scroll compressor includes: a movable scroll having a base plate and a wrap connected to the base plate; as shown in fig. 2, the fixed scroll forms a suction chamber, an intermediate pressure chamber 106, and a discharge chamber 114 together with the orbiting scroll. As shown in fig. 2, the back pressure plate and the floating plate 122 are engaged with the fixed scroll, the back pressure plate and the floating plate 122 form a regulation chamber, and the back pressure plate and the upper end of the fixed scroll form a discharge path and a bypass path, and the two paths are respectively provided. As shown in fig. 2 and 3, a back pressure plate for accommodating a bypass valve disposed on the fixed scroll forms a bypass space by two wall surfaces; the back pressure plate is provided with a bypass hole and a discharge hole, the bypass hole is communicated with the bypass path, and the discharge hole is communicated with the discharge path; as shown in fig. 2, the back pressure plate has a peripheral end surface lower in height than the central cylindrical body.

The fixed scroll may have a regulation chamber formed thereon, the back pressure chamber having an intermediate pressure between a discharge pressure and a suction pressure, and the back pressure chamber may be formed on an upper end surface of the fixed scroll. That is, by forming the regulation chamber, the orbiting scroll and the fixed scroll can be contacted with each other with an appropriate force, refrigerant leakage can be prevented and lubrication can be increased, while the contact force can be adjusted, friction of contact can be reduced, but sealability is not lowered.

As shown in fig. 2 and 3, the fixed scroll is provided with the drainage channel 130 with multiple sections, so that the drainage pressure can be prevented from directly passing through the back pressure plate, the complexity and the sealing performance of the back pressure plate structure are reduced, meanwhile, the requirement on a sealing gasket between the back pressure plate and the end face of the fixed scroll is reduced, and only the intermediate pressure of the back pressure chamber and the exhaust pressure of the bypass space are divided.

The bypass path and the exhaust path are divided by the back pressure plate inner cylinder 134. In the exhaust process, the flow velocity loss of the gas at the exhaust port is small, and the gas directly enters the exhaust cavity, so that the flow loss of the gas flow is small; through the bypass path and the discharge path, the two different thermodynamic fluids do not interfere with each other in the operation process of the compressor, and the airflow pulsation is effectively reduced. In the opening process of the bypass valve, exhaust gas filled in the bypass path directly enters the space of the upper shell 124, heat and mass exchange with gas in the exhaust passage is avoided, the airflow at the exhaust port of the fixed scroll is stable, and a large amount of gas backflow is avoided under the over-compression working condition.

Specifically, as shown in fig. 1 and 2, the compressor proposed by the present embodiment is a scroll compressor having a orbiting scroll having a wrap and a fixed scroll having a wrap. The orbiting scroll performs an orbiting motion with respect to the fixed scroll, and when the orbiting scroll and the fixed scroll are engaged with each other, as the orbiting scroll performs the orbiting motion, a capacity of a pressure chamber 106 formed between the orbiting scroll and the fixed scroll is reduced. Therefore, the pressure of the medium in the pressure chamber 106 can be increased, and the medium is discharged from the discharge port formed in the central portion of the fixed scroll.

In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically limited, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means 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 invention. In this specification, the schematic representations of the terms used above 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, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A compressor, comprising:

a scroll pack including a pressure chamber;

the back pressure element is connected with the scroll assembly, and a discharge cavity is formed on one side of the back pressure element, which is far away from the scroll assembly;

a first passage provided on the back pressure element, the first passage communicating with the pressure chamber and the discharge chamber;

a bypass switch disposed within the first channel and configured to be adapted to turn on or off the first channel.

2. The compressor of claim 1, wherein the first passage comprises:

the bypass chamber is arranged on the back pressure element and communicated with the pressure chamber, and the bypass switch is positioned in the bypass chamber;

and the bypass channel is arranged on the back pressure element and communicated with the bypass chamber and the discharge chamber.

3. The compressor of claim 1,

the scroll pack further includes a discharge chamber;

the compressor further includes a second passage disposed on the back pressure member and communicating with the discharge chamber and the discharge chamber.

4. The compressor of claim 3, wherein the scroll pack comprises:

a first scroll that can perform a revolving motion;

a second scroll positioned between the first scroll and the back pressure member, the second scroll and the first scroll together forming the pressure chamber and the discharge chamber;

the third channel is arranged on the second scroll plate and communicated with the pressure chamber and the first channel;

a fourth passage provided on the second scroll and communicating with the discharge chamber and the second passage.

5. The compressor of claim 4, further comprising:

the scroll assembly and the back pressure element are arranged in the shell;

the floating plate is positioned in the shell and is connected with the back pressure element;

the baffle is located in the shell and arranged on the floating plate, and the baffle and the shell jointly form the discharge cavity.

6. The compressor of claim 5,

a groove is formed in one end, away from the first scroll, of the second scroll, and the back pressure element is arranged in the groove;

the middle part of the back pressure element is provided with a bulge, an installation position is formed between the bulge and the side wall of the groove, and the floating plate is arranged in the installation position.

7. The compressor of claim 5, further comprising:

a first seal disposed between the floating plate and the second scroll;

a second sealing member disposed between the floating plate and the back pressure member;

and the sealing gasket is arranged between the back pressure element and the second scroll.

8. The compressor of any one of claims 5 to 7, further comprising:

a regulation chamber formed between the back pressure element and the floating plate;

and the drainage channel is arranged on the second scroll plate, an inlet of the drainage channel is communicated with the pressure chamber, and an outlet of the drainage channel is communicated with the adjusting chamber.

9. The compressor of any one of claims 5 to 7, wherein the scroll assembly further comprises:

the rotating shaft is connected with the first scroll plate;

a suction chamber formed between the first scroll and the second scroll.

10. A refrigeration apparatus, comprising:

a compressor as claimed in any one of claims 1 to 9.