Compression assembly, compressor and refrigeration equipment

Abstract

The utility model provides a compression assembly, a compressor and refrigeration equipment. The compression assembly comprises a static vortex plate and a static vortex plate, the dynamic vortex plate and the static vortex plate form a plurality of compression cavities, the compression cavities comprise the first compression cavity and the second compression cavity, the dynamic vortex plate comprises dynamic vortex teeth, and the first compression cavity and the second compression cavity are located on the two sides of the dynamic vortex teeth respectively in the radial direction of the dynamic vortex plate; the rack is arranged on the side, away from the static vortex plate, of the dynamic vortex plate and connected with the static vortex plate, and a back pressure cavity is defined by the rack, the dynamic vortex plate and the static vortex plate; the first channel is arranged on the static vortex plate, the first end of the first channel can be communicated with one of the first compression cavity and the second compression cavity, and the second end of the first channel is communicated with the back pressure cavity; the second channel is arranged on the orbiting scroll, the first end of the second channel can be communicated with the other one of the first compression cavity and the second compression cavity, the second end of the second channel is communicated with the back pressure cavity, and it is ensured that continuous introduction of medium pressure is achieved and pressure pulsation in the back pressure cavity is reduced within the period that the orbiting scroll rotates by one circle.

Description

Technical Field

[0001] The utility model relates to the technical field of compressor equipment, and in particular to a compression component, a compressor and a refrigeration device. Background Art

[0002] At present, in the scroll compressor in the related technology, when the compressor is running, the moving disk supports the floating seal through the pressure of the intermediate cavity, and the pressure of the intermediate cavity is used to introduce gas through the compression cavity formed between the moving disk and the static disk. The passage for introducing gas is generally through a back pressure channel set on the moving disk. During one cycle of operation of the moving disk, some angles of the back pressure holes will be covered by the top surface of the static disk teeth, so that the intermediate cavity and the moving disk back pressure introduction passage are intermittently connected, resulting in large pressure pulsations in the intermediate cavity. Utility Model Content

[0003] The embodiments of the present utility model are intended to solve at least one of the technical problems existing in the prior art.

[0004] To this end, a first aspect of an embodiment of the present invention provides a compression assembly.

[0005] A second aspect of the embodiments of the present invention provides a compressor.

[0006] A third aspect of the embodiments of the present invention provides a refrigeration device.

[0007] In view of this, according to a first aspect of an embodiment of the present utility model, a compression assembly is provided, which includes: a static scroll; a movable scroll, which forms a plurality of compression chambers with the static scroll, the plurality of compression chambers including a first compression chamber and a second compression chamber, the movable scroll including a movable vortex, and along the radial direction of the movable scroll, the first compression chamber and the second compression chamber are respectively located on both sides of the movable vortex; a frame, which is arranged on the side of the movable scroll away from the static scroll and is connected to the static scroll, and the frame, the movable scroll and the static scroll are combined to form a back pressure chamber; a first channel, which is arranged on the static scroll, and the first end of the first channel can be communicated with one of the first compression chamber and the second compression chamber, and the second end of the first channel is communicated with the back pressure chamber; a second channel, which is arranged on the movable scroll, and the first end of the second channel can be communicated with the other of the first compression chamber and the second compression chamber, and the second end of the second channel is communicated with the back pressure chamber.

[0008] The present invention provides a fixed scroll, an orbiting scroll, a frame, a first channel, and a second channel. Specifically, the frame is disposed on the side of the orbiting scroll facing away from the stationary scroll to support the orbiting scroll. Furthermore, the frame, the orbiting scroll, and the stationary scroll enclose a backpressure chamber. Because the backpressure chamber can communicate with the first compression chamber and / or the second compression chamber, an intermediate pressure can be introduced into the backpressure chamber during compressor operation. This intermediate pressure acts on the side of the orbiting scroll facing away from the stationary scroll, thereby providing axial support for the orbiting scroll and ensuring a tight seal between the orbiting and stationary scrolls.

[0009] The fixed scroll and the orbiting scroll form a plurality of compression chambers, which include a first compression chamber and a second compression chamber. Since the first compression chamber and the second compression chamber are respectively located on both sides of the orbiting scroll along the radial direction of the orbiting scroll, that is, the first compression chamber is the outer compression chamber of the orbiting scroll, and the second compression chamber is the inner compression chamber of the orbiting scroll, or the first compression chamber is the inner compression chamber of the orbiting scroll, and the second compression chamber is the outer compression chamber of the orbiting scroll.

[0010] The first channel is provided on the fixed scroll, and the second channel is provided on the orbiting scroll. Optionally, the first end of the first channel can communicate with the first compression chamber, and the first end of the second channel can communicate with the second compression chamber, or the first end of the first channel can communicate with the second compression chamber, and the first end of the second channel can communicate with the first compression chamber. In other words, the first channel and the second channel can communicate with the outer compression chamber of the orbiting scroll and the inner compression chamber of the orbiting scroll, respectively, to introduce pressure into the backpressure chamber.

[0011] It is understandable that in the related art, generally only back pressure holes and back pressure channels are set on the moving disk to introduce the intermediate pressure. However, during the period when the moving disk rotates to a certain angle relative to the static disk, the tooth top surface of the static disk vortex will close the back pressure hole. At this time, the intermediate pressure stops being introduced, and the moving disk continues to rotate. When it rotates to a certain angle again, the tooth top surface and the back pressure hole are offset, and the intermediate pressure is introduced again. In other words, the back pressure chamber and the moving disk intermediate pressure introduction passage are intermittently connected, which can easily lead to large pressure pulsations in the back pressure chamber.

[0012] Since the second end of the first channel is connected to the back pressure chamber, the second end of the second channel is connected to the back pressure chamber, that is to say, the back pressure chamber can introduce the medium pressure from the first compression chamber and the second compression chamber respectively, that is, during the period when the movable scroll rotates one circle relative to the static scroll, when the tooth top surface of the movable scroll tooth covers the first end of the first channel to cut off the first channel and the first compression chamber, the back pressure chamber can also be connected to the second compression chamber through the second channel to introduce the medium pressure. Correspondingly, when the tooth top surface of the static scroll tooth covers the first end of the second channel to cut off the second channel and the second compression chamber, the back pressure chamber can also be connected to the first compression chamber through the first channel to introduce the medium pressure, thereby ensuring that during the period when the movable scroll rotates one circle, there is always a compression chamber connected to the back pressure chamber, so as to realize the continuous introduction of medium pressure, improve the stability of the movable scroll during operation, and reduce the pressure pulsation in the back pressure chamber.

[0013] In addition, the compression assembly provided by the above technical solution of the utility model also has the following additional technical features:

[0014] In some technical solutions, optionally, the static scroll includes a connected first disk body and a static scroll tooth, a first channel is provided on the first disk body, and along the radial direction of the first disk body, the static scroll tooth includes a first wall surface and a second wall surface relative to each other, and the first wall surface is closer to the center of the first disk body than the second wall surface; the movable scroll also includes a second disk body, the movable scroll tooth is connected to the second disk body, the second channel is provided on the second disk body, and along the radial direction of the second disk body, the movable scroll tooth includes a third wall surface and a fourth wall surface relative to each other, and the third wall surface is closer to the center of the second disk body than the fourth wall surface, the first wall surface, the fourth wall surface, the first disk body and the second disk body enclose a first compression chamber, and the second wall surface, the third wall surface, the first disk body and the second disk body enclose a second compression chamber.

[0015] This technical solution defines a stationary scroll comprising a first disk body and a stationary scroll. Specifically, a first passage is provided on the first disk body. Along the radial direction of the first disk body, the stationary scroll includes a first wall surface and a second wall surface that oppose each other. The first wall surface is closer to the center of the first disk body than the second wall surface. In other words, the first wall surface forms the inner mold line, while the second wall surface forms the outer mold line.

[0016] The orbiting scroll also includes a second disk body, the orbiting volute is connected to the second disk body, and the second passage is provided on the second disk body. Along the radial direction of the second disk body, the orbiting volute includes a third wall surface and a fourth wall surface that are opposed to each other. The third wall surface is closer to the center of the second disk body than the fourth wall surface. In other words, the third wall surface is the inner mold line, and the fourth wall surface is the outer mold line.

[0017] The first wall surface, the fourth wall surface, the first disk body and the second disk body together form a first compression chamber. That is to say, the inner profile of the static scroll, the outer profile of the movable scroll, the first disk body and the second disk body together form the first compression chamber. That is, the first compression chamber is the outer line compression chamber of the movable scroll.

[0018] The second wall surface, the third wall surface, the first disk body and the second disk body together form a second compression chamber. That is to say, the outer contour line of the static scroll, the inner contour line of the movable scroll, the first disk body and the second disk body together form the second compression chamber. That is, the second compression chamber is the inner contour line compression chamber of the movable scroll.

[0019] Since the first channel and the second channel can be connected with the outer compression chamber of the movable scroll and the inner compression chamber of the movable scroll respectively, the introduction of the intermediate pressure in the back pressure chamber is realized. That is to say, during the period when the movable scroll rotates one circle relative to the static scroll, when the tooth top surface of the movable scroll tooth covers the first end of the first channel to cut off the first channel and the first compression chamber, the back pressure chamber can also be connected with the second compression chamber through the second channel to introduce the intermediate pressure. Correspondingly, when the tooth top surface of the static scroll tooth covers the first end of the second channel to cut off the second channel and the second compression chamber, the back pressure chamber can also be connected with the first compression chamber through the first channel to introduce the intermediate pressure, thereby ensuring that during the period when the movable scroll rotates one circle, there is always a compression chamber connected to the back pressure chamber, so as to realize the continuous introduction of intermediate pressure, improve the stability of the movable scroll during operation, and reduce the pressure pulsation in the back pressure chamber.

[0020] In some technical solutions, optionally, the first end of the first channel is constructed to be close to the first wall or the second wall; based on the first end of the first channel being close to the first wall, the first end of the second channel is constructed to be close to the third wall, the first end of the first channel can be connected to the first compression chamber, and the first end of the second channel can be connected to the second compression chamber; based on the first end of the first channel being close to the second wall, the first end of the second channel is constructed to be close to the fourth wall, the first end of the first channel can be connected to the second compression chamber, and the first end of the second channel can be connected to the first compression chamber.

[0021] In this technical solution, it is defined that the first end of the first channel is close to the first wall or the second wall, that is, the first end of the first channel is close to the inner mold line of the static volute, or the first end of the first channel is close to the outer mold line of the static volute.

[0022] Specifically, when the first end of the first channel is close to the inner profile of the static vortex, the first end of the second channel is close to the third wall, that is, the first end of the second channel is close to the inner profile of the movable vortex. At this time, the first end of the first channel can be connected to the first compression chamber, and the first end of the second channel can be connected to the second compression chamber. The back pressure chamber can introduce medium pressure from the outer compression chamber of the movable scroll through the first channel, and the back pressure chamber can also introduce medium pressure from the inner compression chamber of the movable scroll through the second channel, thereby realizing the instantaneous introduction of medium pressure into the back pressure chamber and reducing pressure pulsation in the back pressure chamber.

[0023] When the first end of the first channel is close to the outer profile of the static vortex, the first end of the second channel is close to the fourth wall, that is, the first end of the second channel is close to the outer profile of the movable vortex. At this time, the first end of the first channel can be connected to the second compression chamber, and the first end of the second channel can be connected to the first compression chamber. The back-pressure chamber can introduce medium pressure from the inner compression chamber of the movable scroll through the first channel, and the back-pressure chamber can also introduce medium pressure from the outer compression chamber of the movable scroll through the second channel, thereby realizing the instantaneous introduction of medium pressure into the back-pressure chamber and reducing pressure pulsation in the back-pressure chamber.

[0024] In some technical solutions, optionally, the first channel includes a first body, a first connecting hole and a second connecting hole, wherein one end of the first connecting hole is connected to the first body, and the other end of the first connecting hole can be connected to the first compression chamber or the second compression chamber, and one end of the second connecting hole is connected to the first body, and the other end of the second connecting hole passes through the static vortex and is connected to the back pressure chamber.

[0025] In this technical solution, it is defined that the first channel includes a first body, a first communicating hole and a second communicating hole. Specifically, one end of the first communicating hole is connected to the first body, and the other end of the first communicating hole can be connected to the first compression chamber or the second compression chamber. It can be understood that when the other end of the first communicating hole can be connected to the first compression chamber, the first end of the second channel can be connected to the second compression chamber, and when the other end of the first communicating hole can be connected to the second compression chamber, the first end of the second channel can be connected to the first compression chamber.

[0026] The two ends of the second communication hole are connected to the first body and the back-pressure chamber, respectively. That is, when intermediate pressure is introduced from the first compression chamber or the second compression chamber into the back-pressure chamber through the first passage, the first communication hole, the first body, and the second communication hole form an introduction path. Because the back-pressure chamber can draw intermediate pressure from the first and second compression chambers, respectively, this ensures that one compression chamber is always connected to the back-pressure chamber during one orbit of the orbiting scroll, enabling continuous introduction of intermediate pressure. This improves the stability of the orbiting scroll during operation and reduces pressure pulsation within the back-pressure chamber.

[0027] In some technical solutions, optionally, the frame includes a back-pressure wall, which forms a part of the cavity wall of the back-pressure cavity, and is opposite to the movable scroll along the radial direction of the static scroll; wherein, the distance L1 between the center axis of the second communicating hole and the center axis of the static scroll, the distance L2 between the back-pressure wall and the center axis of the static scroll, and the diameter D1 of the second communicating hole satisfy L1+D1 / 2≤L2.

[0028] In this technical solution, it is defined that the frame includes a back-pressure wall. Specifically, the sum of the distance between the central axis of the second communicating hole and the central axis of the static scroll and the radius of the second communicating hole, that is, the distance between the inner wall of the second communicating hole away from the central axis of the static scroll and the central axis of the static scroll, is less than or equal to the distance between the back-pressure wall and the central axis of the static scroll. That is to say, the inner wall of the second communicating hole away from the central axis of the static scroll is located radially inside the back-pressure wall, ensuring that the second communicating hole can be fully exposed to the back-pressure chamber, avoiding the frame structure from blocking the second communicating hole, thereby ensuring the effective introduction of the medium pressure and improving the reliability of the compressor.

[0029] In some technical solutions, optionally, based on the fact that the first communicating hole can communicate with the first compression chamber, during one revolution of the orbiting scroll, from the time when the first communicating hole starts communicating with the first compression chamber to the time when the first communicating hole stops communicating with the first compression chamber, the following conditions are satisfied: a rotation angle θ of the orbiting scroll relative to the fixed scroll, a distance L1 between the center axis of the second communicating hole and the center axis of the fixed scroll, a diameter D1 of the second communicating hole, an outer diameter D2 of the orbiting scroll, and a rotation radius R of the orbiting scroll:

[0030]

[0031] In this technical solution, it can be understood that the difference between the distance between the center axis of the second communicating hole and the center axis of the static vortex and the radius of the second communicating hole is the distance between the inner wall of the second communicating hole close to the center axis of the static vortex and the center axis of the static vortex, which is greater than or equal to This can prevent the movable scroll from blocking the second connecting hole during the operation of the movable scroll relative to the fixed scroll, ensuring that the second connecting hole can be completely exposed to the back pressure chamber, thereby ensuring the effective introduction of the medium pressure and improving the reliability of the compressor.

[0032] In some technical solutions, optionally, at least a portion of the first communicating hole extends along the axial direction of the fixed scroll; and / or at least a portion of the second communicating hole extends along the axial direction of the fixed scroll.

[0033] In this technical solution, at least a portion of the first communicating hole is limited to extend along the axial direction of the static scroll, which is beneficial to reducing the difficulty of processing the first communicating hole and further reducing the cost of the compressor.

[0034] At least a portion of the second communicating hole extends along the axial direction of the static scroll, which helps to reduce the difficulty of processing the second communicating hole and further reduces the cost of the compressor.

[0035] In some technical solutions, optionally, one end of the first body away from the first communicating hole extends radially of the static scroll and passes through the outer wall of the static scroll, and the compression assembly also includes a sealing portion, which is arranged at the end of the first body away from the first communicating hole.

[0036] In this technical solution, it is defined that the compression assembly also includes a sealing portion. Specifically, one end of the first body away from the first communicating hole extends along the radial direction of the static scroll, and one end of the body away from the first communicating hole passes through the outer wall of the static scroll, which is beneficial to reducing the processing difficulty of the first channel, thereby reducing the cost of the compressor.

[0037] The blocking portion is arranged at one end of the first body away from the first communicating hole, and blocks the end of the first body away from the first communicating hole to prevent leakage when medium pressure is introduced into the back pressure chamber, thereby improving the reliability of the compressor.

[0038] In some technical solutions, optionally, a first thread is provided at one end of the first body away from the first communicating hole, and a second thread is provided at the blocking portion, and the second thread is adapted to the first thread.

[0039] In this technical solution, it is defined that the first body is provided with a first thread at one end away from the first communicating hole. Optionally, the first thread is an internal thread.

[0040] Since the sealing part is provided with a second thread, optionally, the second thread is an external thread, and the second thread is adapted to the first thread, that is, the sealing part is sealed by cooperating with the thread at one end of the first body away from the first communicating hole, which is beneficial to improving the sealing of the sealing part, ensuring the effective introduction of the pressure in the back pressure chamber, and is beneficial to improving the sealing between the movable scroll and the static scroll.

[0041] In some technical solutions, optionally, the second channel includes a second body and a third connecting hole, wherein one end of the second body extends radially along the movable scroll and passes through the outer wall of the movable scroll so that the second body is connected with the back pressure chamber, one end of the third connecting hole is connected with the second body, and the other end of the third connecting hole can be connected with the second compression chamber or the first compression chamber.

[0042] In this technical solution, the second channel is defined to include a second body and a third connecting hole. Specifically, one end of the second body extends along the radial direction of the movable scroll and passes through the outer wall of the movable scroll to connect the second body with the back pressure chamber.

[0043] One end of the third communicating hole is connected to the second body, and the other end can be connected to the second compression chamber or the first compression chamber. It can be understood that when the first communicating hole can be connected to the first compression chamber, the third communicating hole can be connected to the second compression chamber, or when the first communicating hole can be connected to the second compression chamber, the third communicating hole can be connected to the first compression chamber.

[0044] Optionally, at least a portion of the third communicating hole extends in the axial direction of the movable scroll.

[0045] According to the second aspect of the present invention, a compressor is provided, comprising a compression assembly as provided by any of the above technical solutions, thereby possessing all the beneficial technical effects of the compression assembly, which will not be repeated here.

[0046] According to the third aspect of the present invention, a refrigeration device is provided, comprising a compression assembly or compressor as provided by any of the above technical solutions, thereby having all the beneficial technical effects of the compression assembly or compressor, which will not be repeated here.

[0047] Additional aspects and advantages of the present invention will be given in the following description, and some will become obvious from the following description, or will be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0049] Figure 1 One of the structural schematic diagrams of the static scroll according to one embodiment of the present utility model is shown;

[0050] Figure 2 The second structural diagram of the static scroll according to one embodiment of the present utility model is shown;

[0051] Figure 3 A partial structural diagram of a movable scroll according to an embodiment of the present utility model is shown;

[0052] Figure 4 A schematic structural diagram of a movable scroll according to an embodiment of the present invention is shown;

[0053] Figure 5 FIG1 shows one of the partial structural schematic diagrams of a compression assembly according to an embodiment of the present utility model;

[0054] Figure 6 FIG2 shows a second partial structural schematic diagram of a compression assembly according to an embodiment of the present utility model;

[0055] Figure 7 FIG3 shows a third partial structural diagram of a compression assembly according to an embodiment of the present utility model;

[0056] Figure 8 A schematic structural diagram of a compressor according to an embodiment of the present utility model is shown.

[0057] in, Figures 1 to 8 The corresponding relationship between the reference numerals and component names is as follows:

[0058] 100 compression assembly, 110 static scroll, 111 first disk body, 112 static scroll tooth, 113 first wall surface, 114 second wall surface, 120 orbiting scroll, 121 orbiting scroll tooth, 122 second disk body, 123 third wall surface, 124 fourth wall surface, 130 first compression chamber, 140 second compression chamber, 150 frame, 151 back pressure wall, 160 back pressure chamber, 170 first channel, 171 first body, 172 first communicating hole, 173 second communicating hole, 174 first thread, 180 second channel, 181 second body, 182 third communicating hole, 190 sealing portion, 191 second thread, 200 compressor, 210 compression chamber. DETAILED DESCRIPTION

[0059] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0060] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0061] Refer to the following Figures 1 to 8 The compression assembly 100, the compressor 200 and the refrigeration device provided according to some embodiments of the present invention are described.

[0062] In one embodiment according to the present application, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 As shown, a compression assembly 100 is proposed, which includes: a fixed scroll 110; a movable scroll 120, which forms a plurality of compression chambers 210 with the fixed scroll 110, and the plurality of compression chambers 210 include a first compression chamber 130 and a second compression chamber 140. The movable scroll 120 includes a movable scroll tooth 121. Along the radial direction of the movable scroll 120, the first compression chamber 130 and the second compression chamber 140 are respectively located on both sides of the movable scroll tooth 121; a frame 150 is provided on a side of the movable scroll 120 away from the fixed scroll 110 and is connected to the fixed scroll 110. The frame 150, the orbiting scroll 120 and the fixed scroll 110 enclose a back pressure chamber 160; a first channel 170 is provided on the fixed scroll 110, and a first end of the first channel 170 can be communicated with one of the first compression chamber 130 and the second compression chamber 140, and a second end of the first channel 170 is communicated with the back pressure chamber 160; a second channel 180 is provided on the orbiting scroll 120, and a first end of the second channel 180 can be communicated with the other of the first compression chamber 130 and the second compression chamber 140, and a second end of the second channel 180 is communicated with the back pressure chamber 160.

[0063] The compression assembly 100 provided by the embodiment of the present invention includes a fixed scroll 110, an orbiting scroll 120, a frame 150, a first passage 170, and a second passage 180. Specifically, the frame 150 is disposed on a side of the orbiting scroll 120 away from the fixed scroll 110, and is used to support the orbiting scroll 120. At the same time, the frame 150, the orbiting scroll 120, and the stationary scroll 110 enclose a back pressure chamber 160. Since the back pressure chamber 160 can communicate with the first compression chamber 130 and / or the second compression chamber 140, during the operation of the compressor 200, a medium pressure can be introduced into the back pressure chamber 160. The medium pressure acts on the side of the orbiting scroll 120 away from the stationary scroll 110, thereby providing axial support force to the orbiting scroll 120 and ensuring the sealing between the orbiting scroll 120 and the stationary scroll 110.

[0064] The fixed scroll 110 and the orbiting scroll 120 form a plurality of compression chambers 210, and the plurality of compression chambers 210 include a first compression chamber 130 and a second compression chamber 140. Since the first compression chamber 130 and the second compression chamber 140 are respectively located on both sides of the orbiting scroll 121 along the radial direction of the orbiting scroll 120, that is, the first compression chamber 130 is the outer compression chamber of the orbiting scroll 120, and the second compression chamber 140 is the inner compression chamber of the orbiting scroll 120, or the first compression chamber 130 is the inner compression chamber of the orbiting scroll 120, and the second compression chamber 140 is the outer compression chamber of the orbiting scroll 120.

[0065] The first channel 170 is provided on the fixed scroll 110, and the second channel 180 is provided on the orbiting scroll 120. Optionally, the first end of the first channel 170 can communicate with the first compression chamber 130, and the first end of the second channel 180 can communicate with the second compression chamber 140. Alternatively, the first end of the first channel 170 can communicate with the second compression chamber 140, and the first end of the second channel 180 can communicate with the first compression chamber 130. In other words, the first channel 170 and the second channel 180 can communicate with the outer compression chamber and the inner compression chamber of the orbiting scroll 120, respectively, to introduce the intermediate pressure into the backpressure chamber 160.

[0066] It is understandable that in the related art, generally only back pressure holes and back pressure channels are set on the moving disk to introduce the intermediate pressure. However, during the period when the moving disk rotates to a certain angle relative to the static disk, the tooth top surface of the static disk vortex will close the back pressure hole. At this time, the intermediate pressure stops being introduced, and the moving disk continues to rotate. When it rotates to a certain angle again, the tooth top surface and the back pressure hole are offset, and the intermediate pressure is introduced again. In other words, the back pressure chamber and the moving disk intermediate pressure introduction passage are intermittently connected, which can easily lead to large pressure pulsations in the back pressure chamber.

[0067] Since the second end of the first channel 170 is in communication with the back pressure chamber 160, and the second end of the second channel 180 is in communication with the back pressure chamber 160, that is, the back pressure chamber 160 can introduce medium pressure from the first compression chamber 130 and the second compression chamber 140 respectively, that is, during the period when the movable scroll 120 rotates one circle relative to the fixed scroll 110, when the tooth top surface of the movable scroll 121 covers the first end of the first channel 170 to cut off the first channel 170 and the first compression chamber 130, the back pressure chamber 160 can also be connected to the second compression chamber through the second channel 180. 140 is connected to introduce the intermediate pressure. Accordingly, when the tooth top surface of the static scroll tooth 112 covers the first end of the second channel 180 to cut off the second channel 180 and the second compression chamber 140, the back pressure chamber 160 can also be connected with the first compression chamber 130 through the first channel 170 to introduce the intermediate pressure, thereby ensuring that during the period when the movable scroll 120 rotates one circle, there is always a compression chamber connected to the back pressure chamber 160 to achieve continuous introduction of intermediate pressure, improve the stability of the movable scroll 120 during operation, and reduce the pressure pulsation in the back pressure chamber 160.

[0068] Figure 5 During the period when the orbiting scroll 120 rotates one circle relative to the fixed scroll 110, the rotation angle of the orbiting scroll 120 relative to the fixed scroll 110 is θ, from the time when the first end of the first channel 170 starts to communicate with the first compression chamber 130 to the time when the first end of the first channel 170 stops communicating with the first compression chamber 130. Figure 5 As shown, line 1 is the line connecting the center of the fixed scroll 110 and the center of the orbiting scroll 120 when the first end of the first passage 170 begins to communicate with the first compression chamber 130. Line 2 is the line connecting the center of the fixed scroll 110 and the center of the orbiting scroll 120 before the first end of the first passage 170 ends communicating with the first compression chamber 130. It will be understood that the orbiting scroll 120 rotates clockwise relative to the fixed scroll 110.

[0069] Figure 6 During the period when the orbiting scroll 120 rotates one circle relative to the fixed scroll 110, the rotation angle of the orbiting scroll 120 relative to the fixed scroll 110 is α, from the time when the first end of the second channel 180 starts to communicate with the second compression chamber 140 to the time when the first end of the second channel 180 stops communicating with the second compression chamber 140. Figure 6 As shown, line 1' is a line connecting the center of the fixed scroll 110 and the center of the movable scroll 120 when the first end of the second channel 180 begins to communicate with the second compression chamber 140, and line 2' is a line connecting the center of the fixed scroll 110 and the center of the movable scroll 120 before the first end of the second channel 180 ends communicating with the second compression chamber 140.

[0070] like Figure 5 、 Figure 6 and Figure 7It can be clearly seen that during one rotation of the movable scroll 120, when the first channel 170 stops communicating with the first compression chamber 130, the second channel 180 remains connected with the second compression chamber 140; when the second channel 180 stops communicating with the second compression chamber 140, the first channel 170 remains connected with the first compression chamber 130, ensuring that during one rotation of the movable scroll 120, there is always a compression chamber connected to the back-pressure chamber 160, so as to realize the continuous introduction of medium pressure, improve the stability of the movable scroll 120 during operation, and reduce the pressure pulsation in the back-pressure chamber 160.

[0071] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, in some embodiments, optionally, the fixed scroll 110 includes a first disk body 111 and a fixed scroll tooth 112 connected to each other, and the first channel 170 is provided on the first disk body 111. Along the radial direction of the first disk body 111, the fixed scroll tooth 112 includes a first wall surface 113 and a second wall surface 114 opposite to each other, and the first wall surface 113 is closer to the center of the first disk body 111 than the second wall surface 114; the movable scroll 120 also includes a second disk body 122, the movable scroll tooth 121 is connected to the second disk body 122, and the second channel 180 is provided on the first disk body 111. 0 is disposed on the second disk body 122. Along the radial direction of the second disk body 122, the movable scroll gear 121 includes a third wall surface 123 and a fourth wall surface 124 opposite to each other. The third wall surface 123 is closer to the center of the second disk body 122 than the fourth wall surface 124. The first wall surface 113, the fourth wall surface 124, the first disk body 111, and the second disk body 122 enclose a first compression chamber 130. The second wall surface 114, the third wall surface 123, the first disk body 111, and the second disk body 122 enclose a second compression chamber 140.

[0072] In this embodiment, the fixed scroll 110 is defined as including a first disk body 111 and a fixed scroll 112. Specifically, a first channel 170 is provided on the first disk body 111. Along the radial direction of the first disk body 111, the fixed scroll 112 includes a first wall surface 113 and a second wall surface 114 that are opposed to each other. The first wall surface 113 is closer to the center of the first disk body 111 than the second wall surface 114. In other words, the first wall surface 113 is the inner mold line, and the second wall surface 114 is the outer mold line.

[0073] The orbiting scroll 120 also includes a second disk body 122, to which the orbiting volute 121 is connected, and on which the second passage 180 is disposed. Along the radial direction of the second disk body 122, the orbiting volute 121 includes a third wall surface 123 and a fourth wall surface 124 that are opposed to each other. The third wall surface 123 is closer to the center of the second disk body 122 than the fourth wall surface 124. In other words, the third wall surface 123 is the inner mold line, and the fourth wall surface 124 is the outer mold line.

[0074] The first wall 113, the fourth wall 124, the first disk 111, and the second disk 122 together form a first compression chamber 130. That is, the inner contour of the stationary scroll 112, the outer contour of the movable scroll 121, the first disk 111, and the second disk 122 together form the first compression chamber 130. That is, the first compression chamber 130 is the outer contour of the movable scroll 120.

[0075] The second wall 114 , the third wall 123 , the first disk 111 , and the second disk 122 together form a second compression chamber 140 . That is, the outer contour of the stationary scroll 112 , the inner contour of the orbiting scroll 121 , the first disk 111 , and the second disk 122 together form the second compression chamber 140 . That is, the second compression chamber 140 is the inner contour of the orbiting scroll 120 .

[0076] Since the first channel 170 and the second channel 180 can be communicated with the outer compression chamber of the movable scroll 120 and the inner compression chamber of the movable scroll 120 respectively, the introduction of the intermediate pressure in the back pressure chamber 160 is achieved. That is to say, during the period when the movable scroll 120 rotates one circle relative to the fixed scroll 110, when the tooth top surface of the movable scroll tooth 121 covers the first end of the first channel 170 to cut off the first channel 170 from the first compression chamber 130, the back pressure chamber 160 can also be communicated with the second compression chamber 140 through the second channel 180 for intermediate pressure. The introduction of pressure, accordingly, when the tooth top surface of the static scroll tooth 112 covers the first end of the second channel 180 to cut off the second channel 180 and the second compression chamber 140, the back pressure chamber 160 can also be connected with the first compression chamber 130 through the first channel 170 to introduce the intermediate pressure, thereby ensuring that during the period when the movable scroll 120 rotates one circle, there is always a compression chamber connected to the back pressure chamber 160 to achieve continuous introduction of intermediate pressure, improve the stability of the movable scroll 120 during operation, and reduce the pressure pulsation in the back pressure chamber 160.

[0077] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, in some embodiments, optionally, the first end of the first channel 170 is constructed to be close to the first wall 113 or the second wall 114; based on the first end of the first channel 170 being close to the first wall 113, the first end of the second channel 180 being constructed to be close to the third wall 123, the first end of the first channel 170 can be communicated with the first compression chamber 130, and the first end of the second channel 180 can be communicated with the second compression chamber 140; based on the first end of the first channel 170 being close to the second wall 114, the first end of the second channel 180 being constructed to be close to the fourth wall 124, the first end of the first channel 170 can be communicated with the second compression chamber 140, and the first end of the second channel 180 can be communicated with the first compression chamber 130.

[0078] In this embodiment, the first end of the first channel 170 is defined to be close to the first wall 113 or the second wall 114 , that is, the first end of the first channel 170 is close to the inner profile of the static vortex tooth 112 , or the first end of the first channel 170 is close to the outer profile of the static vortex tooth 112 .

[0079] Specifically, when the first end of the first channel 170 is close to the inner profile of the static scroll 112, the first end of the second channel 180 is close to the third wall 123, that is, the first end of the second channel 180 is close to the inner profile of the movable scroll 121. At this time, the first end of the first channel 170 can be communicated with the first compression chamber 130, and the first end of the second channel 180 can be communicated with the second compression chamber 140. The back-pressure chamber 160 can introduce medium pressure from the outer compression chamber of the movable scroll 120 through the first channel 170, and the back-pressure chamber 160 can also introduce medium pressure from the inner compression chamber of the movable scroll 120 through the second channel 180, thereby realizing the instantaneous introduction of medium pressure into the back-pressure chamber 160 and reducing pressure pulsation in the back-pressure chamber 160.

[0080] When the first end of the first channel 170 is close to the outer profile of the static scroll 112, the first end of the second channel 180 is close to the fourth wall 124, that is, the first end of the second channel 180 is close to the outer profile of the movable scroll 121. At this time, the first end of the first channel 170 can be communicated with the second compression chamber 140, and the first end of the second channel 180 can be communicated with the first compression chamber 130. The back-pressure chamber 160 can introduce medium pressure from the inner compression chamber of the movable scroll 120 through the first channel 170, and the back-pressure chamber 160 can also introduce medium pressure from the outer compression chamber of the movable scroll 120 through the second channel 180, thereby realizing the instantaneous introduction of medium pressure into the back-pressure chamber 160 and reducing pressure pulsation in the back-pressure chamber 160.

[0081] like Figure 1 、 Figure 2 、 Figure 5 and Figure 6 As shown, in some embodiments, optionally, the first channel 170 includes a first body 171, a first communicating hole 172 and a second communicating hole 173, wherein one end of the first communicating hole 172 is connected to the first body 171, and the other end of the first communicating hole 172 can be connected to the first compression chamber 130 or the second compression chamber 140, one end of the second communicating hole 173 is connected to the first body 171, and the other end of the second communicating hole 173 passes through the static scroll 110 and is connected to the back pressure chamber 160.

[0082] In this embodiment, it is defined that the first channel 170 includes a first body 171, a first communicating hole 172 and a second communicating hole 173. Specifically, one end of the first communicating hole 172 is connected to the first body 171, and the other end of the first communicating hole 172 can be connected to the first compression chamber 130 or the second compression chamber 140. It can be understood that when the other end of the first communicating hole 172 is able to communicate with the first compression chamber 130, the first end of the second channel 180 is able to communicate with the second compression chamber 140, and when the other end of the first communicating hole 172 is able to communicate with the second compression chamber 140, the first end of the second channel 180 is able to communicate with the first compression chamber 130.

[0083] The two ends of the second communication hole 173 are connected to the first body 171 and the back-pressure chamber 160, respectively. That is, when intermediate pressure is introduced from the first compression chamber 130 or the second compression chamber 140 into the back-pressure chamber 160 through the first passage 170, the first communication hole 172, the first body 171, and the second communication hole 173 form an introduction passage. Because the back-pressure chamber 160 can introduce intermediate pressure from the first compression chamber 130 and the second compression chamber 140, respectively, it ensures that one compression chamber is always connected to the back-pressure chamber 160 during each rotation of the orbiting scroll 120, enabling continuous introduction of intermediate pressure, improving the operational stability of the orbiting scroll 120, and reducing pressure pulsation within the back-pressure chamber 160.

[0084] like Figure 1 and Figure 8 As shown, in some embodiments, optionally, the frame 150 includes a back pressure wall 151, which is formed as a portion of the cavity wall of the back pressure cavity 160, and along the radial direction of the fixed scroll 110, the back pressure wall 151 is opposite to the movable scroll 120; wherein, the distance L1 between the center axis of the second connecting hole 173 and the center axis of the fixed scroll 110, the distance L2 between the back pressure wall 151 and the center axis of the fixed scroll 110, and the diameter D1 of the second connecting hole 173 satisfy L1+D1 / 2≤L2.

[0085] In this embodiment, the frame 150 is defined to include a back-pressure wall 151. Specifically, the sum of the distance between the center axis of the second communicating hole 173 and the center axis of the static scroll 110 and the radius of the second communicating hole 173 is the distance between the inner wall of the second communicating hole 173 away from the center axis of the static scroll 110 and the center axis of the static scroll 110. This distance is less than or equal to the distance between the back-pressure wall 151 and the center axis of the static scroll 110. That is, the inner wall of the second communicating hole 173 away from the center axis of the static scroll 110 is located radially inside the back-pressure wall 151, ensuring that the second communicating hole 173 can be fully exposed to the back-pressure chamber 160, avoiding the frame 150 structure from blocking the second communicating hole 173, thereby ensuring the effective introduction of the medium pressure and improving the reliability of the compressor 200.

[0086] like Figure 1 、 Figure 5 、 Figure 7 and Figure 8 As shown, in some embodiments, optionally, based on the ability of the first communicating hole 172 to communicate with the first compression chamber 130, during one revolution of the orbiting scroll 120, from the start of communication between the first communicating hole 172 and the first compression chamber 130 to the end of communication between the first communicating hole 172 and the first compression chamber 130, the following conditions are satisfied: a rotation angle θ of the orbiting scroll 120 relative to the fixed scroll 110, a distance L1 between the center axis of the second communicating hole 173 and the center axis of the fixed scroll 110, a diameter D1 of the second communicating hole 173, an outer diameter D2 of the orbiting scroll 120, and a rotation radius R of the orbiting scroll 120.

[0087]

[0088] In this embodiment, it can be understood that the difference between the distance between the center axis of the second communicating hole 173 and the center axis of the static scroll 110 and the radius of the second communicating hole 173 is the distance between the inner wall of the second communicating hole 173 close to the center axis of the static scroll 110 and the center axis of the static scroll 110, which is greater than or equal to This can prevent the movable scroll 120 from blocking the second connecting hole 173 during the operation of the movable scroll 120 relative to the fixed scroll 110, ensuring that the second connecting hole 173 can be completely exposed to the back pressure chamber 160, thereby ensuring the effective introduction of the medium pressure and improving the reliability of the compressor 200.

[0089] In some embodiments, optionally, at least a portion of the first communicating hole 172 extends along the axial direction of the fixed scroll 110 ; and / or at least a portion of the second communicating hole 173 extends along the axial direction of the fixed scroll 110 .

[0090] In this embodiment, at least a portion of the first communicating hole 172 is defined to extend along the axial direction of the fixed scroll 110 , which helps to reduce the difficulty of processing the first communicating hole 172 and further reduce the cost of the compressor 200 .

[0091] At least a portion of the second communicating hole 173 extends along the axial direction of the fixed scroll 110 , which helps to reduce the difficulty of processing the second communicating hole 173 and further reduce the cost of the compressor 200 .

[0092] like Figure 1 and Figure 2 As shown, in some embodiments, optionally, one end of the first body 171 away from the first communicating hole 172 extends radially along the static scroll 110 and passes through the outer wall of the static scroll 110, and the compression assembly 100 also includes a sealing portion 190, which is arranged at one end of the first body 171 away from the first communicating hole 172.

[0093] In this embodiment, it is defined that the compression assembly 100 also includes a sealing portion 190. Specifically, one end of the first body 171 away from the first communicating hole 172 extends along the radial direction of the static scroll 110, and one end of the body away from the first communicating hole 172 passes through the outer wall of the static scroll 110, which is beneficial to reducing the processing difficulty of the first channel 170, thereby reducing the cost of the compressor 200.

[0094] The blocking portion 190 is provided at one end of the first body 171 away from the first communicating hole 172 to block the end of the first body 171 away from the first communicating hole 172 to prevent leakage when medium pressure is introduced into the back pressure chamber 160 , thereby improving the reliability of the compressor 200 .

[0095] like Figure 1 As shown, in some embodiments, optionally, a first thread 174 is provided at one end of the first body 171 away from the first communicating hole 172 , and the blocking portion 190 is provided with a second thread 191 , which is adapted to the first thread 174 .

[0096] In this embodiment, a first thread 174 is defined at one end of the first body 171 away from the first communicating hole 172 . Optionally, the first thread 174 is an internal thread.

[0097] Since the sealing part 190 is provided with a second thread 191, optionally, the second thread 191 is an external thread, and the second thread 191 is adapted to the first thread 174, that is, the sealing part 190 is sealed by threaded cooperation with the end of the first body 171 away from the first connecting hole 172, which is beneficial to improving the sealing performance of the sealing part 190, ensuring the effective introduction of the medium pressure in the back pressure chamber 160, and beneficial to improving the sealing performance between the movable scroll 120 and the fixed scroll 110.

[0098] like Figure 3 、 Figure 4 and Figure 6 As shown, in some embodiments, optionally, the second channel 180 includes a second body 181 and a third communicating hole 182, wherein one end of the second body 181 extends along the radial direction of the movable scroll 120 and passes through the outer wall of the movable scroll 120, so that the second body 181 is connected to the back pressure chamber 160, one end of the third communicating hole 182 is connected to the second body 181, and the other end of the third communicating hole 182 can be connected to the second compression chamber 140 or the first compression chamber 130.

[0099] In this embodiment, the second channel 180 is defined to include a second body 181 and a third connecting hole 182. Specifically, one end of the second body 181 extends along the radial direction of the movable scroll 120 and passes through the outer wall of the movable scroll 120 to connect the second body 181 with the back pressure chamber 160.

[0100] One end of the third communicating hole 182 is connected to the second body 181, and the other end can be connected to the second compression chamber 140 or the first compression chamber 130. It can be understood that when the first communicating hole 172 can be connected to the first compression chamber 130, the third communicating hole 182 can be connected to the second compression chamber 140, or when the first communicating hole 172 can be connected to the second compression chamber 140, the third communicating hole 182 can be connected to the first compression chamber 130.

[0101] Optionally, at least a portion of the third communication hole 182 extends in the axial direction of the orbiting scroll 120 .

[0102] like Figure 8 As shown, according to the second aspect of the present invention, a compressor 200 is provided, which includes a compression assembly 100 as provided in any of the above embodiments, and thus has all the beneficial technical effects of the compression assembly 100, which will not be repeated here.

[0103] Optionally, the compressor 200 further includes a casing, a crankshaft and a motor. The compression assembly 100 is disposed in the casing, the crankshaft is connected to the movable scroll 120 , and the motor is connected to the crankshaft.

[0104] Specifically, the compression assembly 100 includes a fixed scroll 110, an orbiting scroll 120, a frame 150, a first passage 170, and a second passage 180. Specifically, the frame 150 is disposed on a side of the orbiting scroll 120 facing away from the fixed scroll 110, and is used to support the orbiting scroll 120. Simultaneously, the frame 150, the orbiting scroll 120, and the stationary scroll 110 enclose a back-pressure chamber 160. Since the back-pressure chamber 160 can communicate with the first compression chamber 130 and / or the second compression chamber 140, during operation of the compressor 200, an intermediate pressure can be introduced into the back-pressure chamber 160. The intermediate pressure acts on the side of the orbiting scroll 120 facing away from the stationary scroll 110, thereby providing axial support for the orbiting scroll 120 and ensuring sealing between the orbiting scroll 120 and the stationary scroll 110.

[0105] The fixed scroll 110 and the orbiting scroll 120 form a plurality of compression chambers 210, and the plurality of compression chambers 210 include a first compression chamber 130 and a second compression chamber 140. Since the first compression chamber 130 and the second compression chamber 140 are respectively located on both sides of the orbiting scroll 121 along the radial direction of the orbiting scroll 120, that is, the first compression chamber 130 is the outer compression chamber of the orbiting scroll 120, and the second compression chamber 140 is the inner compression chamber of the orbiting scroll 120, or the first compression chamber 130 is the inner compression chamber of the orbiting scroll 120, and the second compression chamber 140 is the outer compression chamber of the orbiting scroll 120.

[0106] The first channel 170 is provided on the fixed scroll 110, and the second channel 180 is provided on the orbiting scroll 120. Optionally, the first end of the first channel 170 can communicate with the first compression chamber 130, and the first end of the second channel 180 can communicate with the second compression chamber 140. Alternatively, the first end of the first channel 170 can communicate with the second compression chamber 140, and the first end of the second channel 180 can communicate with the first compression chamber 130. In other words, the first channel 170 and the second channel 180 can communicate with the outer compression chamber and the inner compression chamber of the orbiting scroll 120, respectively, to introduce the intermediate pressure into the backpressure chamber 160.

[0107] It is understandable that in the related art, generally only back pressure holes and back pressure channels are set on the moving disk to introduce the intermediate pressure. However, during the period when the moving disk rotates to a certain angle relative to the static disk, the tooth top surface of the static disk vortex will close the back pressure hole. At this time, the intermediate pressure stops being introduced, and the moving disk continues to rotate. When it rotates to a certain angle again, the tooth top surface and the back pressure hole are offset, and the intermediate pressure is introduced again. In other words, the back pressure chamber and the moving disk intermediate pressure introduction passage are intermittently connected, which can easily lead to large pressure pulsations in the back pressure chamber.

[0108] Since the second end of the first channel 170 is in communication with the back pressure chamber 160, and the second end of the second channel 180 is in communication with the back pressure chamber 160, that is, the back pressure chamber 160 can introduce medium pressure from the first compression chamber 130 and the second compression chamber 140 respectively, that is, during the period when the movable scroll 120 rotates one circle relative to the fixed scroll 110, when the tooth top surface of the movable scroll 121 covers the first end of the first channel 170 to cut off the first channel 170 and the first compression chamber 130, the back pressure chamber 160 can also be connected to the second compression chamber through the second channel 180. 140 is connected to introduce the intermediate pressure. Accordingly, when the tooth top surface of the static scroll tooth 112 covers the first end of the second channel 180 to cut off the second channel 180 and the second compression chamber 140, the back pressure chamber 160 can also be connected with the first compression chamber 130 through the first channel 170 to introduce the intermediate pressure, thereby ensuring that during the period when the movable scroll 120 rotates one circle, there is always a compression chamber connected to the back pressure chamber 160 to achieve continuous introduction of intermediate pressure, improve the stability of the movable scroll 120 during operation, and reduce the pressure pulsation in the back pressure chamber 160.

[0109] Figure 5 During the period when the orbiting scroll 120 rotates one circle relative to the fixed scroll 110, the rotation angle of the orbiting scroll 120 relative to the fixed scroll 110 is θ, from the time when the first end of the first channel 170 starts to communicate with the first compression chamber 130 to the time when the first end of the first channel 170 stops communicating with the first compression chamber 130. Figure 5As shown, line 1 is the line connecting the center of the fixed scroll 110 and the center of the orbiting scroll 120 when the first end of the first passage 170 begins to communicate with the first compression chamber 130. Line 2 is the line connecting the center of the fixed scroll 110 and the center of the orbiting scroll 120 before the first end of the first passage 170 ends communicating with the first compression chamber 130. It will be understood that the orbiting scroll 120 rotates clockwise relative to the fixed scroll 110.

[0110] Figure 6 During the period when the orbiting scroll 120 rotates one circle relative to the fixed scroll 110, the rotation angle of the orbiting scroll 120 relative to the fixed scroll 110 is α, from the time when the first end of the second channel 180 starts to communicate with the second compression chamber 140 to the time when the first end of the second channel 180 stops communicating with the second compression chamber 140. Figure 6 As shown, line 1' is a line connecting the center of the fixed scroll 110 and the center of the movable scroll 120 when the first end of the second channel 180 begins to communicate with the second compression chamber 140, and line 2' is a line connecting the center of the fixed scroll 110 and the center of the movable scroll 120 before the first end of the second channel 180 ends communicating with the second compression chamber 140.

[0111] like Figure 5 、 Figure 6 and Figure 7 It can be clearly seen that during one rotation of the movable scroll 120, when the first channel 170 stops communicating with the first compression chamber 130, the second channel 180 remains connected with the second compression chamber 140; when the second channel 180 stops communicating with the second compression chamber 140, the first channel 170 remains connected with the first compression chamber 130, ensuring that during one rotation of the movable scroll 120, there is always a compression chamber connected to the back-pressure chamber 160, so as to realize the continuous introduction of medium pressure, improve the stability of the movable scroll 120 during operation, and reduce the pressure pulsation in the back-pressure chamber 160.

[0112] Optionally, the first wall 113, the fourth wall 124, the first disk body 111 and the second disk body 122 enclose a first compression chamber 130, that is, the inner profile of the static scroll 112, the outer profile of the movable scroll 121, the first disk body 111 and the second disk body 122 enclose a first compression chamber 130, that is, the first compression chamber 130 is the outer line compression chamber of the movable scroll 120.

[0113] The second wall 114 , the third wall 123 , the first disk 111 , and the second disk 122 together form a second compression chamber 140 . That is, the outer contour of the stationary scroll 112 , the inner contour of the orbiting scroll 121 , the first disk 111 , and the second disk 122 together form the second compression chamber 140 . That is, the second compression chamber 140 is the inner contour of the orbiting scroll 120 .

[0114] Optionally, when the first end of the first channel 170 is close to the inner profile of the static scroll 112, the first end of the second channel 180 is close to the third wall 123, that is, the first end of the second channel 180 is close to the inner profile of the movable scroll 121. At this time, the first end of the first channel 170 can be communicated with the first compression chamber 130, and the first end of the second channel 180 can be communicated with the second compression chamber 140. The back-pressure chamber 160 can introduce medium pressure from the outer compression chamber of the movable scroll 120 through the first channel 170, and the back-pressure chamber 160 can also introduce medium pressure from the inner compression chamber of the movable scroll 120 through the second channel 180, thereby realizing the instantaneous introduction of medium pressure into the back-pressure chamber 160 and reducing pressure pulsation in the back-pressure chamber 160.

[0115] When the first end of the first channel 170 is close to the outer profile of the static scroll 112, the first end of the second channel 180 is close to the fourth wall 124, that is, the first end of the second channel 180 is close to the outer profile of the movable scroll 121. At this time, the first end of the first channel 170 can be communicated with the second compression chamber 140, and the first end of the second channel 180 can be communicated with the first compression chamber 130. The back-pressure chamber 160 can introduce medium pressure from the inner compression chamber of the movable scroll 120 through the first channel 170, and the back-pressure chamber 160 can also introduce medium pressure from the outer compression chamber of the movable scroll 120 through the second channel 180, thereby realizing the instantaneous introduction of medium pressure into the back-pressure chamber 160 and reducing pressure pulsation in the back-pressure chamber 160.

[0116] Optionally, the frame 150 includes a back-pressure wall 151, which forms a portion of the wall of the back-pressure chamber 160. The back-pressure wall 151 is positioned radially opposite the orbiting scroll 120 relative to the fixed scroll 110. The distance L1 between the central axis of the second communicating hole 173 and the central axis of the fixed scroll 110, the distance L2 between the back-pressure wall 151 and the central axis of the fixed scroll 110, and the diameter D1 of the second communicating hole 173 satisfy the relationship L1 + D1 / 2 ≤ L2. In other words, the inner wall of the second communicating hole 173, which is distal to the central axis of the fixed scroll 110, is located radially inward of the back-pressure wall 151, ensuring that the second communicating hole 173 is fully exposed to the back-pressure chamber 160 and preventing the frame 150 structure from obstructing the second communicating hole 173. This ensures that the intermediate pressure is effectively introduced, thereby improving the reliability of the compressor 200.

[0117] Optionally, based on the fact that the first communicating hole 172 can communicate with the first compression chamber 130, during one revolution of the orbiting scroll 120, from the time when the first communicating hole 172 starts communicating with the first compression chamber 130 to the time when the first communicating hole 172 stops communicating with the first compression chamber 130, the rotation angle θ of the orbiting scroll 120 relative to the fixed scroll 110, the distance L1 between the center axis of the second communicating hole 173 and the center axis of the fixed scroll 110, the diameter D1 of the second communicating hole 173, the outer diameter D2 of the orbiting scroll 120, and the rotation radius R of the orbiting scroll 120 satisfy the following: This can prevent the movable scroll 120 from blocking the second connecting hole 173 during the operation of the movable scroll 120 relative to the fixed scroll 110, ensuring that the second connecting hole 173 can be completely exposed to the back pressure chamber 160, thereby ensuring the effective introduction of the medium pressure and improving the reliability of the compressor 200.

[0118] According to the third aspect of the present invention, a refrigeration device is provided, including a compression assembly 100 or a compressor 200 as provided in any of the above embodiments, thereby having all the beneficial technical effects of the compression assembly 100 or the compressor 200, which will not be repeated here.

[0119] In this specification, the terms "connect," "install," and "fix" should be understood broadly. For example, "connect" can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a direct connection or an indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0120] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0121] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A compression assembly, characterized in that: include: static vortex disk; an orbiting scroll, forming a plurality of compression chambers with the fixed scroll, the plurality of compression chambers including a first compression chamber and a second compression chamber, the orbiting scroll including an orbiting volute, wherein the first compression chamber and the second compression chamber are respectively located on either side of the orbiting volute along a radial direction of the orbiting scroll; a frame, disposed on a side of the movable scroll away from the stationary scroll and connected to the stationary scroll, wherein the frame, the movable scroll and the stationary scroll enclose a back pressure chamber; a first passage provided in the fixed scroll, wherein a first end of the first passage is communicable with one of the first compression chamber and the second compression chamber, and a second end of the first passage is communicable with the back pressure chamber; A second passage is provided in the movable scroll, wherein a first end of the second passage is communicable with the other of the first compression chamber and the second compression chamber, and a second end of the second passage is communicated with the back pressure chamber.

2. The compression assembly according to claim 1, wherein The static scroll includes a first disk body and a static scroll tooth connected to each other. The first channel is provided in the first disk body. Along the radial direction of the first disk body, the static scroll tooth includes a first wall surface and a second wall surface facing each other. The first wall surface is closer to the center of the first disk body than the second wall surface. The movable scroll also includes a second disk body, the movable scroll is connected to the second disk body, the second channel is provided in the second disk body, and along the radial direction of the second disk body, the movable scroll includes a third wall surface and a fourth wall surface opposite to each other, the third wall surface is closer to the center of the second disk body than the fourth wall surface, the first wall surface, the fourth wall surface, the first disk body, and the second disk body enclose the first compression chamber, and the second wall surface, the third wall surface, the first disk body, and the second disk body enclose the second compression chamber.

3. The compression assembly according to claim 2, wherein: The first end of the first channel is configured to be close to the first wall or the second wall; Based on the first end of the first channel being close to the first wall surface, the first end of the second channel being close to the third wall surface, the first end of the first channel being able to communicate with the first compression chamber, and the first end of the second channel being able to communicate with the second compression chamber; Based on the first end of the first channel being close to the second wall surface, the first end of the second channel is configured to be close to the fourth wall surface, the first end of the first channel can communicate with the second compression chamber, and the first end of the second channel can communicate with the first compression chamber.

4. The compression assembly according to any one of claims 1 to 3, characterized in that The first channel includes: first ontology; a first communicating hole, one end of which is in communication with the first body, and the other end of which is capable of communicating with the first compression chamber or the second compression chamber; A second communicating hole, one end of which is communicated with the first body, and the other end of which passes through the static scroll and is communicated with the back pressure chamber.

5. The compression assembly according to claim 4, characterized in that The frame includes a back pressure wall, the back pressure wall forming a portion of the cavity wall of the back pressure cavity, and the back pressure wall is opposite to the orbiting scroll along the radial direction of the fixed scroll; The distance L1 between the center axis of the second communicating hole and the center axis of the static scroll, the distance L2 between the back pressure wall and the center axis of the static scroll, and the diameter D1 of the second communicating hole satisfy L1+D1 / 2≤L2.

6. The compression assembly according to claim 4, wherein: Based on the fact that the first communicating hole is communicable with the first compression chamber, during one orbit of the orbiting scroll, from the time the first communicating hole starts communicating with the first compression chamber to the time the first communicating hole stops communicating with the first compression chamber, the following conditions are satisfied: a rotation angle θ of the orbiting scroll relative to the fixed scroll, a distance L1 between the center axis of the second communicating hole and the center axis of the fixed scroll, a diameter D1 of the second communicating hole, an outer diameter D2 of the orbiting scroll, and a rotation radius R of the orbiting scroll:

7. The compression assembly according to claim 4, wherein: At least a portion of the first communicating hole extends in the axial direction of the fixed scroll; and / or At least a portion of the second communication hole extends in the axial direction of the fixed scroll.

8. The compression assembly according to claim 4, wherein: One end of the first body away from the first communicating hole extends in the radial direction of the fixed scroll and passes through the outer wall of the fixed scroll. The compression assembly further includes: The blocking portion is provided at an end of the first body away from the first communicating hole.

9. The compression assembly according to claim 8, wherein A first thread is provided at one end of the first body away from the first communicating hole, and a second thread is provided at the blocking portion, and the second thread is adapted to the first thread.

10. The compression assembly according to any one of claims 1 to 3, characterized in that The second channel includes: a second body, one end of which extends in a radial direction of the movable scroll and penetrates an outer wall of the movable scroll so as to connect the second body with the back pressure chamber; A third communicating hole, one end of which is communicated with the second body, and the other end of which is capable of communicating with the second compression chamber or the first compression chamber.

11. A compressor, characterized in that: Comprising a compression assembly as claimed in any one of claims 1 to 10.

12. A refrigeration device, characterized in that: include: A compression assembly as claimed in any one of claims 1 to 10; or The compressor of claim 11.

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