Compression assembly, compressor and air conditioner

Abstract

The utility model provides a compression assembly, compressor and air conditioner, compression assembly is used for compressor, compressor is equipped with backpressure chamber, compression assembly includes: static scroll, static scroll is equipped with backpressure groove and communication groove that communicate with each other, backpressure groove is used for communicating backpressure chamber; the dynamic vortex plate and the static vortex plate define a compression cavity, the dynamic vortex plate is provided with a back pressure channel, the first end of the back pressure channel is communicated with the compression cavity, and the second end of the back pressure channel can be communicated with or cut off from the communicating groove. In other words, the compression cavity and the back pressure cavity are intermittently communicated, namely, medium pressure is intermittently introduced into the back pressure cavity, peak clipping treatment of the back pressure is achieved, back pressure control is optimized, and the back pressure is kept constant, so that the axial leakage of the compression cavity can be reduced on the premise of meeting the sealing performance between the dynamic vortex plate and the static vortex plate; the friction input force between the orbiting scroll and the static scroll is reduced, so that the abrasion between the orbiting scroll and the static scroll is reduced, and the service life of the compressor is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, and in particular to a compression component, a compressor and an air conditioner. Background Art

[0002] At present, when the scroll compressor is running, the suction and discharge pressures are relatively small and the pressure difference is large. When the pump body runs to compress the refrigerant, a large axial force will be generated, which will push the moving plate and the stationary plate of the pump body to both sides, causing gas leakage and reducing the volumetric efficiency of the compressor.

[0003] In the related art, back pressure is used to push the moving plate toward the stationary plate to make it fit as closely as possible. However, if the back pressure is too small, it will not work and gas will still leak in the pump body. If the back pressure is too large, the compressor will consume more power and increase the wear between the moving plate and the stationary plate. Utility Model Content

[0004] The embodiments of the utility model are intended to solve at least one of the technical problems existing in the prior art.

[0005] To this end, a first aspect of an embodiment of the present utility model provides a compression assembly.

[0006] A second aspect of an embodiment of the utility model provides a compressor.

[0007] A third aspect of the embodiments of the present utility model provides an air conditioner.

[0008] In view of this, according to the first aspect of an embodiment of the utility model, a compression assembly is provided, which is used for a compressor, and the compressor is provided with a back pressure chamber. The compression assembly includes: a fixed scroll, the fixed scroll is provided with a back pressure groove and a connecting groove connected to each other, and the back pressure groove is used to connect the back pressure chamber; a movable scroll, which is combined with the fixed scroll to form a compression chamber, and the movable scroll is provided with a back pressure channel, the first end of the back pressure channel is connected to the compression chamber, and the second end of the back pressure channel can be connected to or cut off from the connecting groove.

[0009] The compression assembly provided by the embodiment of the utility model includes a fixed scroll and a movable scroll. Specifically, the movable scroll and the fixed scroll enclose a compression chamber. Optionally, the fixed scroll is provided with an exhaust port, and the exhaust port is connected to the compression chamber. The compressor also includes a motor and a crankshaft. The crankshaft is connected to the motor and the movable scroll. Specifically, under the drive of the motor, the crankshaft drives the movable scroll to move relative to the fixed scroll to compress the gas in the compression chamber. The gas pressure in the compression chamber increases continuously. When a certain pressure is reached, it is discharged through the exhaust port to complete the compression and exhaust process.

[0010] The fixed scroll is provided with a back pressure groove and a connecting groove, specifically, the connecting groove is connected with the back pressure groove, and the back pressure groove is connected with the back pressure chamber of the compressor. It can be understood that along the axial direction of the compression assembly, at least a part of the back pressure chamber is located on the side of the movable scroll away from the fixed scroll.

[0011] The first end of the back-pressure channel is connected to the compression chamber, and the second end of the back-pressure channel can be connected to the connecting groove. Since the connecting groove is connected to the back-pressure groove, and the back-pressure groove is connected to the back-pressure chamber, the back-pressure chamber becomes a medium-pressure chamber with a certain pressure. During the operation of the compressor, due to the existence of the back-pressure chamber, an axial thrust toward the stationary scroll can be generated on the movable scroll, thereby improving the sealing between the stationary scroll and the movable scroll and improving the energy efficiency of the compressor.

[0012] The second end of the back-pressure channel is connected to or cut off from the connecting groove, that is, the compression chamber is intermittently connected to the back-pressure chamber, that is, medium pressure is intermittently introduced into the back-pressure chamber, thereby realizing the peak shaving of the back-pressure, optimizing the back-pressure control, and maintaining the back-pressure constant. As a result, the axial leakage of the compression chamber can be reduced, and the sealing between the movable scroll and the stationary scroll can be met. The friction input force between the movable scroll and the stationary scroll can be reduced, thereby reducing the wear between the movable scroll and the stationary scroll and extending the service life of the compressor.

[0013] Optionally, the back pressure passage is located inside the movable scroll, so that the sealing performance of the passage formed among the compression chamber, the back pressure passage and the connecting groove can be improved, thereby ensuring the efficiency of the compressor.

[0014] In addition, the compression assembly provided by the above technical solution of the utility model also has the following additional technical features:

[0015] In some technical solutions, optionally, along the axial direction of the movable scroll, a portion of the movable scroll is opposite to the back pressure groove.

[0016] In this technical solution, it can be understood that the movable scroll can move relative to the fixed scroll, and the movable scroll and the fixed scroll enclose a compression chamber. In other words, there is a contact surface between the movable scroll and the fixed scroll.

[0017] A portion of the movable scroll is axially opposite to the back pressure groove, thereby reducing the contact area between the movable scroll and the fixed scroll while ensuring the sealing of the compression chamber. In the process of the movable scroll moving relative to the fixed scroll to compress the gas in the compression chamber, the contact wear between the movable scroll and the fixed scroll can be reduced, thereby extending the service life of the compressor and ensuring stable operation of the compressor.

[0018] In some technical solutions, optionally, at least a portion of the back pressure groove extends along the circumferential direction of the movable scroll.

[0019] In this technical solution, at least a portion of the back-pressure groove is limited to extend along the circumferential direction of the movable scroll, so that the contact area between the movable scroll and the stationary scroll can be further reduced while ensuring the sealing of the compression chamber. In the process of the movable scroll moving relative to the stationary scroll to compress the gas in the compression chamber, the contact wear between the movable scroll and the stationary scroll is further reduced, thereby extending the service life of the compressor and ensuring the stable operation of the compressor.

[0020] In some technical solutions, optionally, the back pressure groove is an annular groove.

[0021] In this technical solution, the back-pressure groove is defined as an annular groove, that is, the back-pressure groove extends to a circle along the circumference of the movable scroll, so that the contact area between the movable scroll and the stationary scroll can be further reduced while ensuring the sealing of the compression chamber. In the process of the movable scroll moving relative to the stationary scroll to compress the gas in the compression chamber, the contact wear between the movable scroll and the stationary scroll is further reduced, thereby extending the service life of the compressor and ensuring the stable operation of the compressor.

[0022] In addition, by setting the back pressure groove as an annular groove, it is helpful to reduce the processing difficulty and thus reduce the production cost of the compressor.

[0023] In some technical schemes, optionally, the stationary scroll includes a first disk body and a stationary scroll tooth, wherein the first disk body is provided with a back pressure groove and an exhaust port, the exhaust port is connected to the compression chamber, the stationary scroll tooth is provided on the side of the first disk body facing the movable scroll, and the back pressure groove is located at the periphery of the stationary scroll tooth.

[0024] In this technical solution, it is defined that the stationary scroll includes a first disk body and a stationary scroll tooth. Specifically, the back pressure groove and the exhaust port are arranged on the first disk body.

[0025] The exhaust port is connected to the compression chamber. Specifically, under the drive of the motor, the crankshaft drives the movable scroll to move relative to the stationary scroll to compress the gas in the compression chamber. The gas pressure in the compression chamber continues to increase. When it reaches a certain pressure, it is discharged through the exhaust port, completing the compression and exhaust process.

[0026] The static volute is arranged on the side of the first disk body facing the movable scroll, and the back pressure groove is located at the periphery of the static volute. It can be understood that the exhaust port is generally arranged near the center of the first disk body, that is, the back pressure groove is located radially outside the static volute, that is, the back pressure groove is arranged away from the center of the first disk body, so that the intermittent introduction of back pressure can be achieved without affecting the internal structure of the compression chamber, ensuring the sealing of the compression chamber while reducing the wear between the movable scroll and the static scroll. Moreover, it is also conducive to reducing the manufacturing difficulty of the static scroll, thereby reducing the production cost of the compressor.

[0027] Optionally, the first disc body and the stationary scroll gear are an integral structure.

[0028] In some technical schemes, optionally, the back pressure channel includes a connecting channel, a first back pressure hole and a second back pressure hole, wherein the first back pressure hole is connected to one end of the connecting channel and can be connected to or cut off from the connecting groove, and the other end of the connecting channel is connected to the compression chamber through the second back pressure hole.

[0029] In this technical solution, the back-pressure channel is defined to include a connecting channel, a first back-pressure hole and a second back-pressure hole. Specifically, one end of the connecting channel is connected to or cut off from the connecting groove through the first back-pressure hole, so that during the movement of the movable scroll relative to the fixed scroll, the first back-pressure hole can be connected to or cut off from the connecting groove, thereby realizing intermittent introduction of pressure in the back-pressure chamber. Due to the existence of the back-pressure chamber, an axial thrust toward the fixed scroll can be generated on the movable scroll, thereby improving the sealing between the fixed scroll and the movable scroll, and improving the energy efficiency of the compressor.

[0030] And because the medium pressure is intermittently introduced into the back pressure chamber, the back pressure peak is cut, the back pressure control is optimized, and the back pressure is maintained constant. Therefore, the axial leakage of the compression chamber can be reduced, and the sealing between the movable scroll and the stationary scroll can be met. The friction input force between the movable scroll and the stationary scroll is reduced, thereby reducing the wear between the movable scroll and the stationary scroll and extending the service life of the compressor.

[0031] In some technical schemes, optionally, the movable scroll includes a second disk body and a movable scroll tooth, wherein the movable scroll tooth is arranged on the side of the second disk body facing the fixed scroll, and along the radial direction of the movable scroll, the first back pressure hole is located on the outer side of the movable scroll tooth, and the second back pressure hole is located on the inner side of the movable scroll tooth.

[0032] In this technical solution, it is defined that the movable scroll includes a second disk body and a movable scroll tooth. Specifically, along the radial direction of the movable scroll, the first back-pressure hole and the second back-pressure hole are respectively located on the outer side and the inner side of the static scroll tooth, thereby realizing the intermittent introduction of medium pressure into the back-pressure chamber and maintaining the constant back pressure in the back-pressure chamber. Under the premise of ensuring the sealing of the compression chamber, the wear between the movable scroll and the static scroll is reduced, the service life of the compressor is extended, the power consumption of the compressor is reduced, and the energy efficiency of the compressor is improved.

[0033] Optionally, the second disc body and the movable scroll gear are an integral structure.

[0034] In some technical schemes, optionally, the connecting groove includes a first groove wall and a second groove wall, at least part of the first groove wall and at least part of the second groove wall are arranged along the circumference of the movable scroll, and when the first back-pressure hole is connected to the connecting groove, along the rotation direction of the movable scroll, the first back-pressure hole is opposite to the first groove wall and the second groove wall in sequence; wherein, when the first back-pressure hole is opposite to the first groove wall, the rotation angle of the movable scroll relative to the fixed scroll is α, and when the first back-pressure hole is opposite to the second groove wall, the rotation angle of the movable scroll relative to the fixed scroll is β, 30°≤β-α≤120°.

[0035] In this technical solution, it is defined that the connecting groove includes a first groove wall and a second groove wall. Specifically, at least a portion of the first groove wall and at least a portion of the second groove wall are arranged along the circumference of the movable scroll, and during the period when the first back pressure hole is connected with the connecting groove, along the rotation direction of the movable scroll relative to the fixed scroll, the first back pressure hole is opposite to the first groove wall and the second groove wall in sequence.

[0036] When the first back-pressure hole is opposite to the first groove wall, the rotation angle of the movable scroll relative to the static scroll is α, and when the first back-pressure hole is opposite to the second groove wall, the rotation angle of the movable scroll relative to the static scroll is β, and β-α is between 30° and 120°. That is to say, when the compression chamber is connected with the connecting groove through the back-pressure channel, the rotation angle of the movable scroll relative to the static scroll is between 30° and 120°, which limits the duration of the intermittent introduction of medium pressure into the back-pressure chamber, realizes the peak shaving of the back pressure, optimizes the back-pressure control, and maintains the back pressure constant. Therefore, under the premise of reducing the risk of leakage in the compression chamber, the friction force between the movable scroll and the static scroll can be reduced, the wear between the critical and static scrolls can be reduced, the service life of the compressor can be extended, and the energy efficiency of the compressor can be improved.

[0037] In some technical solutions, optionally, the cross-sectional shape of the connecting groove includes at least one of a polygon, a circle and an ellipse.

[0038] In this technical solution, the cross-sectional shape of the connecting groove is defined. Specifically, the cross-sectional shape of the connecting groove includes one or more of a polygon, a circle and an ellipse, and can be set according to actual needs.

[0039] Optionally, the polygon comprises a regular polygon.

[0040] Optionally, the polygonal shape includes an L-shape, a triangle or a rectangle.

[0041] According to a second aspect of the utility model, a compressor is provided, comprising a compression assembly as provided by any of the above technical solutions, thereby having all the beneficial technical effects of the compression assembly, which will not be repeated here.

[0042] Furthermore, the compressor also includes a frame, which is arranged on a side of the movable scroll away from the fixed scroll, and a part of the frame and a part of the movable scroll are enclosed to form a back pressure cavity, and the back pressure cavity is connected to the back pressure groove.

[0043] The compressor provided by the embodiment of the utility model comprises a compression assembly and a frame, specifically, the frame is arranged on a side of the movable scroll away from the fixed scroll, and it can be understood that the frame can support the movable scroll. Optionally, the frame is connected to the fixed scroll.

[0044] A part of the frame and a part of the movable scroll are enclosed to form a back pressure chamber, which is connected to the back pressure groove, which is connected to the connecting groove, and the compression chamber is connected to or cut off from the connecting groove through the back pressure channel. Thus, the back pressure chamber becomes a medium pressure chamber with a certain pressure. During the operation of the compressor, due to the existence of the back pressure chamber, an axial thrust toward the fixed scroll, that is, an upward supporting force, can be generated on the movable scroll, thereby improving the sealing between the fixed scroll and the movable scroll and improving the energy efficiency of the compressor.

[0045] In addition, it can be understood that since the back pressure chamber can generate an axial thrust toward the fixed scroll on the movable scroll, it can also reduce the contact between the movable scroll and the frame, thereby reducing the wear between the movable scroll and the frame and extending the service life of the compressor.

[0046] In addition, the second end of the back-pressure channel is connected to or cut off from the connecting groove, that is, the compression chamber is intermittently connected to the back-pressure chamber, that is, medium pressure is intermittently introduced into the back-pressure chamber, thereby realizing the peak shaving of the back pressure, optimizing the back-pressure control, and maintaining the back pressure constant. As a result, the axial leakage of the compression chamber can be reduced, and the sealing between the movable scroll and the stationary scroll can be met. The friction input force between the movable scroll and the stationary scroll can be reduced, thereby reducing the wear between the movable scroll and the stationary scroll and extending the service life of the compressor.

[0047] According to the third aspect of the utility model, an air conditioner is provided, comprising a compression assembly or a compressor as provided by any of the above technical solutions, thereby having all the beneficial technical effects of the compression assembly or the compressor, which will not be repeated here.

[0048] Additional aspects and advantages of the present invention will be given in the following description, and some will become apparent from the following description, or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0050] Figure 1 A schematic structural diagram of a stationary scroll according to an embodiment of the utility model is shown;

[0051] Figure 2 A schematic structural diagram of a movable scroll according to an embodiment of the utility model is shown;

[0052] Figure 3 One of the structural schematic diagrams of a compression assembly according to an embodiment of the utility model is shown;

[0053] Figure 4 A second structural schematic diagram of a compression assembly according to an embodiment of the utility model is shown;

[0054] Figure 5 A schematic structural diagram of a compressor according to an embodiment of the utility model is shown.

[0055] in, Figures 1 to 5 The corresponding relationship between the reference numerals and the component names is as follows:

[0056] 100 compression assembly, 110 static scroll, 111 back pressure groove, 112 connecting groove, 113 first disk body, 114 static scroll tooth, 115 exhaust port, 120 movable scroll, 121 back pressure channel, 122 second disk body, 123 movable scroll tooth, 130 compression chamber, 140 first back pressure hole, 150 second back pressure hole, 160 first groove wall, 170 second groove wall, 180 connecting channel, 200 compressor, 210 frame, 220 back pressure chamber. DETAILED DESCRIPTION

[0057] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0058] 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 protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0059] Refer to the following Figures 1 to 5 The compression assembly 100, the compressor 200 and the air conditioner provided according to some embodiments of the present invention are described.

[0060] In one embodiment according to the present application, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a compression assembly 100 is proposed. The compression assembly 100 is used for a compressor 200. The compressor 200 is provided with a back pressure chamber 220. The compression assembly 100 includes: a fixed scroll 110, the fixed scroll 110 is provided with a connected back pressure groove 111 and a connecting groove 112, and the back pressure groove 111 is used to connect the back pressure chamber 220; a movable scroll 120, which is enclosed with the fixed scroll 110 to form a compression chamber 130, and the movable scroll 120 is provided with a back pressure channel 121, and the first end of the back pressure channel 121 is connected to the compression chamber 130, and the second end of the back pressure channel 121 can be connected to the connecting groove 112 or cut off.

[0061] The compression assembly 100 provided in the embodiment of the utility model includes a fixed scroll 110 and a movable scroll 120. Specifically, the movable scroll 120 and the fixed scroll 110 enclose a compression chamber 130. Optionally, the fixed scroll 110 is provided with an exhaust port 115, and the exhaust port 115 is connected to the compression chamber 130. The compressor 200 also includes a motor and a crankshaft. The crankshaft is connected to the motor and the movable scroll 120. Specifically, under the drive of the motor, the crankshaft drives the movable scroll 120 to move relative to the fixed scroll 110 to compress the gas in the compression chamber 130. The gas pressure in the compression chamber 130 increases continuously. When a certain pressure is reached, it is discharged through the exhaust port 115, completing the compression and exhaust process.

[0062] The fixed scroll 110 is provided with a back pressure groove 111 and a connecting groove 112, specifically, the connecting groove 112 is connected with the back pressure groove 111, and the back pressure groove 111 is connected with the back pressure chamber 220 of the compressor 200. It can be understood that, along the axial direction of the compression assembly 100, at least a portion of the back pressure chamber 220 is located on the side of the movable scroll 120 away from the fixed scroll 110.

[0063] The first end of the back-pressure channel 121 is connected to the compression chamber 130, and the second end of the back-pressure channel 121 can be connected to the connecting groove 112. Since the connecting groove 112 is connected to the back-pressure groove 111, and the back-pressure groove 111 is connected to the back-pressure chamber 220, the back-pressure chamber 220 becomes a medium-pressure chamber with a certain pressure. During the operation of the compressor 200, due to the existence of the back-pressure chamber 220, an axial thrust toward the fixed scroll 110 can be generated on the movable scroll 120, thereby improving the sealing between the fixed scroll 110 and the movable scroll 120, and improving the energy efficiency of the compressor 200.

[0064] The second end of the back-pressure channel 121 is connected to or cut off from the connecting groove 112, that is, the compression chamber 130 is intermittently connected to the back-pressure chamber 220, that is, medium pressure is intermittently introduced into the back-pressure chamber 220, thereby realizing the peak shaving of the back pressure, optimizing the back pressure control, and maintaining the back pressure constant. As a result, the axial leakage of the compression chamber 130 can be reduced, and the sealing between the movable scroll 120 and the fixed scroll 110 can be met. At the premise, the friction input force between the movable scroll 120 and the fixed scroll 110 can be reduced, thereby reducing the wear between the movable scroll 120 and the fixed scroll 110 and extending the service life of the compressor 200.

[0065] Optionally, the back pressure passage 121 is located inside the movable scroll 120 , so that the sealing performance of the passage formed among the compression chamber 130 , the back pressure passage 121 and the connecting groove 112 can be improved, thereby ensuring the efficiency of the compressor 200 .

[0066] In some embodiments, optionally, along the axial direction of the movable scroll 120 , a portion of the movable scroll 120 is opposite to the back pressure groove 111 .

[0067] In this embodiment, it can be understood that the orbiting scroll 120 can move relative to the fixed scroll 110, and the orbiting scroll 120 and the fixed scroll 110 enclose a compression chamber 130. In other words, there is a contact surface between the orbiting scroll 120 and the fixed scroll 110.

[0068] A portion of the movable scroll 120 is axially opposite to the back pressure groove 111, so that the contact area between the movable scroll 120 and the fixed scroll 110 can be reduced while ensuring the sealing of the compression chamber 130. In the process of the movable scroll 120 moving relative to the fixed scroll 110 to compress the gas in the compression chamber 130, the contact wear between the movable scroll 120 and the fixed scroll 110 can be reduced, thereby extending the service life of the compressor 200 and ensuring the stable operation of the compressor 200.

[0069] In some embodiments, optionally, at least a portion of the back pressure groove 111 extends along the circumference of the orbiting scroll 120 .

[0070] In this embodiment, at least a portion of the back pressure groove 111 is limited to extend along the circumferential direction of the movable scroll 120, so that the contact area between the movable scroll 120 and the fixed scroll 110 can be further reduced under the premise of ensuring the sealing of the compression chamber 130. In the process of the movable scroll 120 moving relative to the fixed scroll 110 to compress the gas in the compression chamber 130, the contact wear between the movable scroll 120 and the fixed scroll 110 is further reduced, thereby extending the service life of the compressor 200 and ensuring the stable operation of the compressor 200.

[0071] like Figure 1 , Figure 3 and Figure 4 As shown, in some embodiments, optionally, the back pressure groove 111 is an annular groove.

[0072] In this embodiment, the back-pressure groove 111 is defined as an annular groove, that is, along the circumference of the movable scroll 120, the back-pressure groove 111 extends to a circle, so that the contact area between the movable scroll 120 and the fixed scroll 110 can be further reduced under the premise of ensuring the sealing of the compression chamber 130. In the process that the movable scroll 120 moves relative to the fixed scroll 110 to compress the gas in the compression chamber 130, the contact wear between the movable scroll 120 and the fixed scroll 110 is further reduced, thereby extending the service life of the compressor 200 and ensuring the stable operation of the compressor 200.

[0073] In addition, by setting the back pressure groove 111 as an annular groove, it is helpful to reduce the processing difficulty, thereby reducing the production cost of the compressor 200.

[0074] like Figure 1As shown, in some embodiments, optionally, the stationary scroll 110 includes a first disk body 113 and a stationary scroll tooth 114, wherein the first disk body 113 is provided with a back pressure groove 111 and an exhaust port 115, the exhaust port 115 is connected to the compression chamber 130, and the stationary scroll tooth 114 is provided on the side of the first disk body 113 facing the movable scroll 120, and the back pressure groove 111 is located at the periphery of the stationary scroll tooth 114.

[0075] In this embodiment, the fixed scroll 110 is defined to include a first disk body 113 and a fixed scroll tooth 114 . Specifically, the back pressure groove 111 and the exhaust port 115 are disposed on the first disk body 113 .

[0076] The exhaust port 115 is connected to the compression chamber 130. Specifically, driven by the motor, the crankshaft drives the movable scroll 120 to move relative to the fixed scroll 110 to compress the gas in the compression chamber 130. The gas pressure in the compression chamber 130 increases continuously. When a certain pressure is reached, the gas is discharged through the exhaust port 115, completing the compression and exhaust process.

[0077] The static volute 114 is arranged on the side of the first disk body 113 facing the movable scroll 120, and the back pressure groove 111 is located at the periphery of the static volute 114. It can be understood that the exhaust port 115 is generally arranged near the center of the first disk body 113, that is, the back pressure groove 111 is located at the radial outer side of the static volute 114, that is, the back pressure groove 111 is arranged away from the center of the first disk body 113, so that the intermittent introduction of back pressure can be achieved without affecting the internal structure of the compression chamber 130, ensuring the sealing of the compression chamber 130 while reducing the wear between the movable scroll 120 and the static scroll 110. Moreover, it is also conducive to reducing the manufacturing difficulty of the static scroll 110, thereby reducing the production cost of the compressor 200.

[0078] Optionally, the first disk body 113 and the static scroll gear 114 are an integral structure.

[0079] like Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, optionally, the back pressure channel 121 includes a connecting channel 180, a first back pressure hole 140 and a second back pressure hole 150, wherein the first back pressure hole 140 is connected to one end of the connecting channel 180 and can be connected to or cut off from the connecting groove 112, and the other end of the connecting channel 180 is connected to the compression chamber 130 through the second back pressure hole 150.

[0080] In this embodiment, the back-pressure channel 121 is defined to include a connecting channel 180, a first back-pressure hole 140 and a second back-pressure hole 150. Specifically, one end of the connecting channel 180 is connected to or cut off from the connecting groove 112 through the first back-pressure hole 140. Therefore, during the movement of the movable scroll 120 relative to the fixed scroll 110, the first back-pressure hole 140 can be connected to or cut off from the connecting groove 112, thereby achieving intermittent introduction of the medium pressure in the back-pressure chamber 220. Due to the existence of the back-pressure chamber 220, an axial thrust toward the fixed scroll 110 can be generated on the movable scroll 120, thereby improving the sealing between the fixed scroll 110 and the movable scroll 120, and improving the energy efficiency of the compressor 200.

[0081] And because the medium pressure is intermittently introduced into the back pressure chamber 220, the back pressure peak is cut, the back pressure control is optimized, and the back pressure is maintained constant. Therefore, the axial leakage of the compression chamber 130 is reduced, and the sealing between the movable scroll 120 and the fixed scroll 110 is satisfied. The friction input force between the movable scroll 120 and the fixed scroll 110 is reduced, thereby reducing the wear between the movable scroll 120 and the fixed scroll 110 and extending the service life of the compressor 200.

[0082] like Figure 2 As shown, in some embodiments, optionally, the movable scroll 120 includes a second disk body 122 and a movable scroll tooth 123, wherein the movable scroll tooth 123 is arranged on the side of the second disk body 122 facing the fixed scroll 110, and along the radial direction of the movable scroll 120, the first back pressure hole 140 is located on the outer side of the movable scroll tooth 123, and the second back pressure hole 150 is located on the inner side of the movable scroll tooth 123.

[0083] In this embodiment, it is defined that the movable scroll 120 includes a second disk body 122 and a movable scroll tooth 123. Specifically, along the radial direction of the movable scroll 120, the first back pressure hole 140 and the second back pressure hole 150 are respectively located on the outer side and the inner side of the static scroll tooth 114, thereby realizing the intermittent introduction of medium pressure into the back pressure chamber 220, maintaining the constant back pressure in the back pressure chamber 220, and reducing the wear between the movable scroll 120 and the static scroll 110 while ensuring the sealing of the compression chamber 130, thereby extending the service life of the compressor 200, reducing the power consumption of the compressor 200, and thereby improving the energy efficiency of the compressor 200.

[0084] Optionally, the second disk 122 and the movable scroll 123 are an integral structure.

[0085] like Figure 1 , Figure 3 and Figure 4As shown, in some embodiments, optionally, the connecting groove 112 includes a first groove wall 160 and a second groove wall 170, and at least a portion of the first groove wall 160 and at least a portion of the second groove wall 170 are arranged along the circumference of the movable scroll 120. When the first back pressure hole 140 is connected to the connecting groove 112, along the rotation direction of the movable scroll 120, the first back pressure hole 140 is opposite to the first groove wall 160 and the second groove wall 170 in sequence; wherein, when the first back pressure hole 140 is opposite to the first groove wall 160, the rotation angle of the movable scroll 120 relative to the fixed scroll 110 is α, and when the first back pressure hole 140 is opposite to the second groove wall 170, the rotation angle of the movable scroll 120 relative to the fixed scroll 110 is β, and 30°≤β-α≤120°.

[0086] In this embodiment, the connecting groove 112 is defined to include a first groove wall 160 and a second groove wall 170. Specifically, at least a portion of the first groove wall 160 and at least a portion of the second groove wall 170 are arranged along the circumference of the movable scroll 120, and during the period when the first back pressure hole 140 is connected to the connecting groove 112, along the rotation direction of the movable scroll 120 relative to the fixed scroll 110, the first back pressure hole 140 is opposite to the first groove wall 160 and the second groove wall 170 in sequence.

[0087] like Figure 3 and Figure 4 As shown, the rotating direction of the movable scroll 120 relative to the fixed scroll 110 is clockwise. Of course, the rotating direction of the movable scroll 120 relative to the fixed scroll 110 may also be counterclockwise. It can be specifically set according to actual needs.

[0088] like Figure 3 As shown, when the first back pressure hole 140 is opposite to the first groove wall 160, the rotation angle of the movable scroll 120 relative to the fixed scroll 110 is α, as shown in FIG. Figure 4 As shown, when the first back pressure hole 140 is opposite to the second groove wall 170, the rotation angle of the movable scroll 120 relative to the fixed scroll 110 is β, and β-α is between 30° and 120°, that is, when the compression chamber 130 is connected with the connecting groove 112 through the back pressure channel 121, the rotation angle of the movable scroll 120 relative to the fixed scroll 110 is between 30° and 120°, which also limits the time length of the intermittent introduction of the medium pressure into the back pressure chamber 220, realizes the peak shaving of the back pressure, optimizes the back pressure control, and maintains the back pressure constant, so that under the premise of reducing the risk of leakage of the compression chamber 130, the friction input between the movable scroll 120 and the fixed scroll 110 can be reduced, the wear between the movable scroll 120 and the fixed scroll 110 can be reduced, the service life of the compressor 200 can be extended, and the energy efficiency of the compressor 200 can be improved.

[0089] like Figure 1As shown, in some embodiments, optionally, the cross-sectional shape of the communication groove 112 includes at least one of a polygon, a circle, and an ellipse.

[0090] In this embodiment, the cross-sectional shape of the connecting groove 112 is defined. Specifically, the cross-sectional shape of the connecting groove 112 includes one or more of a polygon, a circle, and an ellipse, which can be set according to actual needs.

[0091] Optionally, the polygon comprises a regular polygon.

[0092] Optionally, the polygonal shape includes an L-shape, a triangle or a rectangle.

[0093] In a specific embodiment, in a scroll compressor in the related art, the back pressure is drawn out from the back pressure holes on the side of the movable scroll plate base plate. The back pressure holes in the movable plate are exposed across multiple compression chambers, resulting in obvious peak and valley values ​​in the back pressure. For operating points with insufficient sealing margin, leakage will occur.

[0094] The scroll compressor (compressor 200) of the present application has a fluid outflow path (back pressure channel 121) formed on the bottom plate (second disk body 122) of the orbiting scroll (orbiting scroll 120) that is connected to the outer line side compression chamber (compression chamber 130) of the orbiting scroll vortex (orbiting vortex 123), and a connecting interval control groove (connecting groove 112) intermittently connected to the back pressure outflow path (back pressure channel 121) and a back pressure release groove (back pressure groove 111) are provided on the stationary disk (stationary scroll 110). The control groove (connecting groove 112) and the release groove (back pressure groove 111) intersect and are connected, thereby realizing the peak shaving of the back pressure, maintaining the constancy of the back pressure within a certain main shaft rotation angle, and reducing the risk of axial leakage.

[0095] On the bottom plate (first disk body 113) of the fixed scroll (stationary scroll 110), on the surface in contact with the bottom plate (second disk body 122) of the revolving scroll (orbiting scroll 120), there is provided a connecting interval control groove (connecting groove 112) intermittently connected to the outlet (first back pressure hole 140) of the revolving scroll outflow path (back pressure channel 121); and a release groove (back pressure groove 111) connected to the intermittent connecting control groove (connecting groove 112).

[0096] The outer line side compression chamber (compression chamber 130) is intermittently connected to the back pressure chamber (back pressure chamber 220) through the fluid outflow path (back pressure channel 121) for the outer line side compression chamber, or the inner line side compression chamber (compression chamber 130) is intermittently connected to the back pressure chamber (back pressure chamber 220) through the fluid outflow path (back pressure channel 121) for the inner line side compression chamber. The rotation angle of the movable scroll 120 is between 30° and 120°.

[0097] According to the second aspect of the present invention, a compressor 200 is provided, comprising a compression assembly 100 as provided in any of the above embodiments, and thus having all the beneficial technical effects of the compression assembly 100, which will not be described in detail herein.

[0098] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, further, the compressor 200 also includes a frame 210, which is arranged on a side of the movable scroll 120 away from the fixed scroll 110, and a part of the frame 210 and a part of the movable scroll 120 are enclosed to form a back pressure chamber 220, and the back pressure chamber 220 is connected to the back pressure groove 111.

[0099] The compressor 200 provided by the embodiment of the utility model includes a compression assembly 100 and a frame 210. Specifically, the frame 210 is arranged on a side of the movable scroll 120 away from the fixed scroll 110. It can be understood that the frame 210 can support the movable scroll 120. Optionally, the frame 210 is connected to the fixed scroll 110.

[0100] A part of the frame 210 and a part of the movable scroll 120 are enclosed to form a back pressure chamber 220, the back pressure chamber 220 is connected to the back pressure groove 111, the back pressure groove 111 is connected to the connecting groove 112, and the compression chamber 130 is connected to or cut off from the connecting groove 112 through the back pressure channel 121. Thus, the back pressure chamber 220 becomes a medium pressure chamber with a certain pressure. During the operation of the compressor 200, due to the existence of the back pressure chamber 220, an axial thrust toward the fixed scroll 110, that is, an upward supporting force, can be generated on the movable scroll 120, thereby improving the sealing between the fixed scroll 110 and the movable scroll 120, and improving the energy efficiency of the compressor 200.

[0101] In addition, it can be understood that since the back pressure chamber 220 can generate an axial thrust toward the fixed scroll 110 on the movable scroll 120, it can also reduce the contact between the movable scroll 120 and the frame 210, thereby reducing the wear between the movable scroll 120 and the frame 210, thereby extending the service life of the compressor 200.

[0102] In addition, the second end of the back pressure channel 121 is connected to or cut off from the connecting groove 112, that is, the compression chamber 130 is intermittently connected to the back pressure chamber 220, that is, medium pressure is intermittently introduced into the back pressure chamber 220, thereby realizing the peak shaving of the back pressure, optimizing the back pressure control, and maintaining the back pressure constant. As a result, the axial leakage of the compression chamber 130 can be reduced, and the sealing between the movable scroll 120 and the fixed scroll 110 can be met. At the premise, the friction input force between the movable scroll 120 and the fixed scroll 110 can be reduced, thereby reducing the wear between the movable scroll 120 and the fixed scroll 110 and extending the service life of the compressor 200.

[0103] According to the third aspect of the utility model, an air conditioner is provided, comprising a compression assembly 100 or a compressor 200 as provided in any of the above embodiments, and thus having all the beneficial technical effects of the compression assembly 100 or the compressor 200, which will not be described in detail herein.

[0104] In the description of this specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0105] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0106] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A compression assembly, characterized in that: The compression assembly is used for a compressor, the compressor is provided with a back pressure chamber, and the compression assembly comprises: A stationary scroll, wherein the stationary scroll is provided with a back pressure groove and a connecting groove connected to each other, wherein the back pressure groove is used to connect to the back pressure chamber; The movable scroll and the fixed scroll form a compression chamber. The movable scroll is provided with a back pressure channel. The first end of the back pressure channel is connected to the compression chamber, and the second end of the back pressure channel can be connected to or blocked from the connecting groove.

2. The compression assembly according to claim 1, characterized in that In the axial direction of the movable scroll, a portion of the movable scroll faces the back pressure groove.

3. The compression assembly according to claim 1, characterized in that At least a portion of the back pressure groove extends along the circumferential direction of the movable scroll.

4. The compression assembly according to claim 1, characterized in that The back pressure groove is an annular groove.

5. The compression assembly according to claim 1, characterized in that The static vortex disk comprises: A first disk body, wherein the first disk body is provided with the back pressure groove and an exhaust port, and the exhaust port is communicated with the compression chamber; The stationary scroll is arranged on a side of the first disk body facing the movable scroll, and the back pressure groove is located at the periphery of the stationary scroll.

6. The compression assembly according to any one of claims 1 to 5, characterized in that The back pressure channel comprises: Connecting channels; A first back pressure hole, connected to one end of the connecting channel, and capable of being connected to or blocked from the connecting groove; A second back pressure hole, the other end of the connecting channel is connected to the compression chamber through the second back pressure hole.

7. The compression assembly according to claim 6, characterized in that The movable scroll comprises: The second plate; The movable scroll is arranged on the side of the second disk body facing the fixed scroll. Along the radial direction of the movable scroll, the first back pressure hole is located on the outer side of the movable scroll, and the second back pressure hole is located on the inner side of the movable scroll.

8. The compression assembly according to claim 6, characterized in that The connecting groove comprises a first groove wall and a second groove wall, at least a portion of the first groove wall and at least a portion of the second groove wall are arranged along the circumferential direction of the movable scroll, and when the first back pressure hole is connected to the connecting groove, along the rotation direction of the movable scroll, the first back pressure hole is opposite to the first groove wall and the second groove wall in sequence; Among them, when the first back pressure hole is opposite to the first groove wall, the rotation angle of the movable scroll relative to the fixed scroll is α, and when the first back pressure hole is opposite to the second groove wall, the rotation angle of the movable scroll relative to the fixed scroll is β, 30°≤β-α≤120°.

9. The compression assembly according to any one of claims 1 to 5, characterized in that The cross-sectional shape of the communication groove includes at least one of a polygon, a circle and an ellipse.

10. A compressor, characterized in that: include: A compression assembly as claimed in any one of claims 1 to 9; A frame is arranged on a side of the movable scroll away from the fixed scroll, a part of the frame and a part of the movable scroll are enclosed to form a back pressure cavity, and the back pressure cavity is communicated with the back pressure groove.

11. An air conditioner, characterized in that: include: A compression assembly as claimed in any one of claims 1 to 9; or The compressor of claim 10.

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