Scroll assembly, scroll compressor and air conditioner

Abstract

The present application relates to the field of compressor technology, and provides a scroll assembly, a scroll compressor and an air conditioner. The scroll assembly includes: a fixed scroll, which is provided with an air inlet hole, an air outlet hole and an oil injection channel; a movable scroll, which is meshed with the fixed scroll and forms a working chamber with the fixed scroll, and the movable scroll is provided with an oil injection groove connected to the back pressure chamber of the scroll compressor, and the movable scroll is configured to move relative to the fixed scroll to compress the gas entering the working chamber; the oil injection channel is intermittently connected to the oil injection groove and the working chamber, so that the oil in the back pressure chamber is intermittently injected into the working chamber under the action of the pressure difference between the back pressure chamber and the working chamber. In the technical solution of the present application, it is possible to effectively prevent the gas in the working chamber from leaking to the back pressure chamber, thereby reducing the flow loss of the gas during the operation of the scroll assembly, which is conducive to promoting the scroll compressor to improve energy efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of compressors, and in particular to a scroll assembly, a scroll compressor and an air conditioner. Background Art

[0002] At present, the pressure of the back pressure chamber of the scroll compressor is the intermediate pressure. The movable scroll disc is closely attached to the static scroll disc under the action of the back pressure chamber pressure. If the back pressure chamber pressure is too large, the friction loss of the contact surface between the movable scroll disc and the static scroll disc will increase, and the power will increase; if the back pressure chamber pressure is too small, the movable scroll disc will not be able to fit the static scroll disc smoothly, which may easily cause the movable scroll disc to overturn and leak, resulting in a decrease in the working capacity of the scroll compressor. In the prior art, a back pressure hole is arranged in the working chamber, so that the back pressure hole is connected to the back pressure chamber, so that the back pressure chamber has an intermediate pressure higher than the suction pressure. However, in this scheme, since the working chamber pressure changes with the operation of the static scroll disc, when the working chamber pressure at the back pressure hole is high, the gas in the working chamber is easy to enter the back pressure chamber through the back pressure hole, and when the working chamber pressure at the back pressure hole is low, the gas is easy to enter the working chamber through the back pressure hole, thereby causing gas flow loss and affecting the energy efficiency of the scroll compressor. Summary of the invention

[0003] According to the embodiments of the present application, it is intended to improve at least one of the technical problems existing in the prior art or related art.

[0004] To this end, an object according to an embodiment of the present application is to provide a scroll assembly.

[0005] Another object according to an embodiment of the present application is to provide a scroll compressor.

[0006] Another object of an embodiment of the present application is to provide an air conditioner.

[0007] In order to achieve the above-mentioned purpose, according to an embodiment of the first aspect of the present application, a vortex assembly is provided, comprising: a fixed vortex, which is provided with an air inlet hole, an air exhaust hole and an oil injection channel; a movable vortex, which is meshed with the fixed vortex and forms a working chamber with the fixed vortex, and the movable vortex is provided with an oil injection groove connected to the back pressure chamber of the vortex compressor, and the movable vortex is configured to move linearly relative to the fixed vortex to compress the gas entering the working chamber; wherein the oil injection channel is intermittently connected to the oil injection groove and the working chamber, so that under the action of the pressure difference between the back pressure chamber and the working chamber, the oil in the back pressure chamber is intermittently injected into the working chamber.

[0008] According to an embodiment of the first aspect of the present application, a scroll assembly includes a fixed scroll and a movable scroll, which can be used in a scroll compressor. The movable scroll and the fixed scroll are meshed with each other and form a working chamber between the two; the movable scroll can move relative to the fixed scroll. By providing an air inlet and an exhaust hole on the fixed scroll, the gas can enter the working chamber through the air inlet, so that during the operation of the movable scroll, the structural state of the working chamber is changed, thereby compressing the gas, and the compressed gas is discharged to the exhaust chamber of the scroll compressor through the exhaust hole.

[0009] By arranging an oil filling channel on the fixed scroll disk and correspondingly arranging an oil filling groove on the movable scroll disk, and the oil filling groove can be connected with the back pressure chamber of the scroll compressor, so that during the operation of the movable scroll disk, the oil filling groove can be intermittently connected with the oil filling channel and the working chamber, and the pressure difference between the working chamber and the back pressure chamber is utilized to drive the oil in the back pressure chamber to flow into the working chamber through the oil filling groove and the oil filling channel, lubricate the fitting surface between the movable scroll disk and the fixed scroll disk, and seal the gap in the working chamber to prevent the gas in the working chamber from leaking to the back pressure chamber, and at the same time, when the oil filling groove, the oil filling channel and the working chamber are in a disconnected state, the gas in the back pressure chamber can be prevented from entering the working chamber through the oil filling channel, thereby realizing intermittent oil filling, thereby reducing the flow loss of the gas during the operation of the scroll disk assembly, which is beneficial to promoting the improvement of energy efficiency of the scroll compressor.

[0010] It should be noted that there is a tiny gap between the fitting surface of the orbiting scroll and the fixed scroll of the scroll compressor. Under normal circumstances, the gas will flow into or out of the working chamber under pressure, causing gas flow loss. The pressure of the back pressure chamber of the scroll compressor is usually between the suction pressure and the exhaust pressure. The oil in the oil storage space of the scroll compressor can enter the back pressure chamber under pressure to provide oil for the working chamber.

[0011] In addition, the scroll assembly in the above technical solution provided in the embodiment of the present application may also have the following additional technical features:

[0012] In the above technical solution, when the pressure in the working chamber is greater than the pressure in the back pressure chamber, the oil injection channel is disconnected from the oil injection groove and the working chamber; when the pressure in the working chamber is less than the pressure in the back pressure chamber, the oil injection channel is connected to the oil injection groove and the working chamber.

[0013] In this technical solution, as the pressure in the working chamber changes, the oil injection channel is alternately connected and disconnected with the oil injection groove and the working chamber. When the pressure in the working chamber is greater than the pressure in the back pressure chamber, the oil injection channel is disconnected from the connection between the oil injection groove and the working chamber through the operation of the movable scroll plate to prevent the gas in the working chamber from entering the back pressure chamber through the oil injection channel and the oil injection groove to reduce gas loss; and when the pressure in the working chamber is less than the pressure in the back pressure chamber, the oil injection channel is connected with the oil injection groove and the working chamber through the operation of the movable scroll plate. At this time, a pressure difference is formed between the back pressure chamber and the working chamber, and the oil in the back pressure chamber enters the working chamber through the oil injection groove and the oil injection channel under the action of pressure to seal the gap in the working chamber and prevent gas from leaking into the back pressure chamber through the gap. The above arrangement can not only reduce the gas flow loss caused by the gap in the working chamber, but also prevent the oil injection channel and the oil injection groove from causing gas loss themselves, and has a better effect on improving the energy efficiency of the scroll compressor.

[0014] In the above technical solution, the static vortex disk includes a first end plate and a static vortex structure arranged on the bottom surface of the first end plate; the oil injection channel includes an oil injection hole, a connecting hole and a back pressure hole, the oil injection hole is arranged on the bottom surface of the static vortex structure, the back pressure hole is arranged on the bottom surface of the first end plate, and the two ends of the connecting hole are respectively connected with the oil injection hole and the back pressure hole; wherein, the oil injection groove is intermittently connected with the oil injection hole, and the back pressure hole is intermittently connected with the working chamber.

[0015] In this technical solution, the static scroll disk specifically includes a first end plate and a static scroll structure. The static scroll structure is arranged on the bottom surface of the first end plate and is arranged in a spiral shape. The exhaust hole is located in the static scroll structure to facilitate exhaust. The oil injection channel specifically includes an oil injection hole, a connecting hole and a back pressure hole. The back pressure hole is arranged on the bottom surface of the first end plate, and the oil injection hole is arranged on the bottom surface of the static scroll structure. Both the oil injection hole and the back pressure hole are blind holes. The connecting hole is arranged inside the first end plate and the static scroll structure, and the two ends of the connecting hole are connected to the oil injection hole and the back pressure hole respectively, thereby forming a through oil injection channel. During the operation of the scroll compressor, the movable scroll disk moves horizontally relative to the static scroll disk, and the back pressure hole is alternately opened and closed. At the same time, the oil injection groove is alternately connected and disconnected with the oil injection hole, thereby enabling the back pressure chamber of the scroll compressor to be alternately connected and disconnected with the working chamber.

[0016] In the above technical solution, the movable scroll plate includes a second end plate and a movable scroll structure arranged on the top surface of the second end plate, the movable scroll structure is meshed with the static scroll structure, and a working chamber is formed between the movable scroll structure and the static scroll structure; the oil filling groove is arranged on the top surface of the second end plate and is located on the outer side of the movable scroll structure, one end of the oil filling groove extends to the edge of the second end plate, and the other end extends in a direction close to the movable scroll structure.

[0017] In this technical solution, the movable scroll disk specifically includes a second end plate and a movable scroll structure. The movable scroll structure is arranged on the top surface of the second end plate and forms a vortex-shaped arrangement that is compatible with the static scroll structure. The movable scroll structure is meshed with the static scroll structure and encloses a working chamber. Wherein, as the movable scroll disk operates, the shape and volume of the working chamber will change. By arranging an oil filling groove on the outer side of the movable scroll structure on the second end plate, after the second end plate is fitted with the bottom surface of the static scroll structure, the oil filling groove can be intermittently connected and disconnected with the oil filling hole as the movable scroll disk operates, so as to facilitate the oil filling operation. Wherein, one end of the oil filling groove extends to the edge of the second end plate to communicate with the back pressure chamber, and the other end of the oil filling groove extends in a direction close to the movable scroll structure to correspond to the position of the oil filling hole.

[0018] In the above technical solution, the aperture of the back pressure hole is smaller than the tooth thickness of the movable scroll structure.

[0019] In this technical solution, the top surface of the movable scroll structure is fitted with the bottom surface of the first end plate, and the aperture size of the back-pressure hole is limited so that the aperture of the back-pressure hole is smaller than the tooth thickness of the movable scroll structure, so that when the movable scroll structure moves to the position of the back-pressure hole, it can completely block the back-pressure hole, so that the back-pressure hole and the working chamber are alternately connected and disconnected, so as to prevent the gas from leaking into the back-pressure chamber through the back-pressure hole due to the size mismatch between the back-pressure hole and the movable scroll structure.

[0020] In the above technical solution, one end of the oil filling groove close to the movable scroll structure is an arc structure, and the diameter of the arc structure is equal to the groove width of the oil filling groove.

[0021] In this technical solution, one end of the oil filling groove close to the movable scroll structure is an arc structure, such as a semicircular structure, which is easy to process and shape, and can guide the oil when it flows through. By setting the groove width of the oil filling groove equal to the diameter of the arc structure, a long strip of groove body with equal width is formed, which is easy to process and can reduce the pressure change of the oil when the oil flows through.

[0022] In the above technical solution, the width of the oil filling groove is greater than or equal to 1 mm, and the depth of the oil filling groove is greater than or equal to 0.5 mm.

[0023] In this technical solution, the width of the oil filling groove is set to be greater than or equal to 1 mm, and the depth is set to be greater than or equal to 0.5 mm, so as to prevent the oil filling groove from being too narrow and affecting the flow of oil when the second end plate and the static scroll plate are in contact.

[0024] In the above technical solution, a side wall is provided on the bottom surface of the first end plate in a circumferential direction, and the air inlet hole is provided in a radial direction and passes through the side wall; wherein, in the direction in which the static vortex structure gradually shrinks, the angle between the center line of the air inlet hole and the back pressure hole is 225° to 315°.

[0025] In this technical solution, the air inlet hole is arranged along the radial direction of the first end plate so as to be connected to the air inlet pipe of the scroll compressor; the air inlet hole passes through the side wall of the first end plate so as to be connected with the working chamber. When the air inlet hole and the working chamber are in a connected state, an air suction operation is performed. With the operation of the movable scroll disk, the connection between the air inlet hole and the working chamber is blocked, and then the gas in the working chamber is compressed. Finally, the compressed gas is discharged to the exhaust chamber of the scroll compressor through the exhaust hole to complete a working cycle. By setting the angle between the center line of the air inlet hole and the back pressure hole, a suitable interval is maintained between the back pressure hole and the air inlet hole. Specifically, in the direction in which the static scroll structure gradually shrinks, the angle is in the range of 225° to 315°, and the back pressure hole can obtain a better back pressure.

[0026] In the above technical solution, the back pressure hole and the air inlet hole are always kept disconnected.

[0027] In this technical solution, during the operation of the movable scroll, the back pressure hole is always disconnected from the air inlet hole to prevent the oil injection operation from affecting the suction process, and also to prevent gas from leaking out from the air inlet hole during the compression process.

[0028] In the above technical solution, an eccentric bearing is provided at the bottom of the second end plate.

[0029] In this technical solution, an eccentric bearing is arranged at the bottom of the second end plate to facilitate connection with the eccentric component of the driving mechanism when assembled on the scroll compressor, thereby realizing the eccentric connection of the movable scroll plate, so that the movable scroll plate can move linearly relative to the fixed scroll plate under the drive of the driving mechanism.

[0030] In the above technical solution, the working chamber includes: a first chamber, located between the outer side surface of the movable scroll structure and the inner side surface of the static scroll structure; a second chamber, located between the inner side surface of the movable scroll structure and the outer side surface of the static scroll structure; wherein the back pressure hole is alternately connected to the first chamber and the second chamber, so that the oil in the back pressure chamber is alternately injected into the first chamber and the second chamber.

[0031] In this technical solution, the working chamber includes a first chamber and a second chamber. Specifically, the first chamber is formed between the outer side surface of the movable scroll structure and the inner side surface of the static scroll structure, and the second chamber is formed between the inner side surface of the movable scroll structure and the outer side surface of the static scroll structure. As the movable scroll disk rotates, the shapes and volumes of the first chamber and the second chamber change periodically. In this process, the back pressure hole is alternately connected with the first chamber and the second chamber, and when the movable scroll structure blocks the back pressure hole, the connection between the back pressure hole and the first chamber and the second chamber is disconnected. Among them, the oil in the back pressure chamber can be alternately injected into the first chamber and the second chamber under pressure to seal the gap between the first chamber and the second chamber respectively, further reducing the gas in the working chamber from leaking out through the gap.

[0032] In the above technical solution, the movable scroll plate translates once, and oil is injected into the first chamber and the second chamber respectively once.

[0033] In this technical solution, one translational movement of the movable scroll relative to the stationary scroll is considered a working cycle. During one working cycle, the first chamber and the second chamber are connected to the back pressure hole once respectively, and accordingly, oil is injected into the first chamber and the second chamber once respectively, so that the oil injection operation matches the working cycle of the movable scroll.

[0034] In the above technical solution, the maximum volume of the first chamber is greater than the maximum volume of the second chamber; wherein, the connection time length between the first chamber and the back pressure chamber is greater than or equal to the connection time length between the second chamber and the back pressure chamber.

[0035] In this technical solution, the maximum volume of the first chamber is set to be greater than the maximum volume of the second chamber, that is, the maximum volumes of the first chamber and the second chamber are different, so as to facilitate application to an asymmetric scroll compressor. At this time, by setting the connection time between the back pressure chamber and the first chamber to be not less than the connection time between the back pressure chamber and the second chamber, the maximum volumes corresponding to the first chamber and the second chamber are matched, so as to achieve different exhaust volumes of the first chamber and the second chamber.

[0036] In an embodiment of the second aspect of the present application, a scroll compressor is provided, comprising: a shell, on which an air inlet pipe and an air outlet pipe are provided, and oil is contained in the shell; a frame, which is arranged in the shell; a scroll assembly of any one of the embodiments of the first aspect mentioned above, which is arranged on the frame, and the air inlet hole and the air outlet hole of the scroll assembly are respectively connected to the air inlet pipe and the air outlet pipe, and a back pressure chamber is formed between the movable scroll of the scroll assembly and the frame; a drive assembly, which is arranged in the shell, and the output end of the drive assembly is eccentrically connected to the movable scroll, so as to drive the movable scroll to move relative to the fixed scroll.

[0037] According to an embodiment of the second aspect of the present application, a scroll compressor includes a housing, a frame, a scroll assembly and a drive assembly in the embodiment of the first aspect. The frame, the scroll assembly and the drive assembly are all arranged in the housing. The frame serves as a mounting base for the scroll assembly and the drive assembly to support the scroll assembly and the drive assembly. The fixed scroll of the scroll assembly is fixedly connected to the frame, and a back pressure chamber is formed between the movable scroll of the scroll assembly and the frame; the output end of the drive assembly is eccentrically connected to the movable scroll to drive the movable scroll to move relative to the fixed scroll. An air inlet pipe and an exhaust pipe are provided on the housing, the air inlet pipe is connected to the air inlet hole of the fixed scroll, and the exhaust hole of the fixed scroll is connected to the exhaust pipe through the exhaust chamber in the housing to facilitate the suction and exhaust operations. Oil is stored in the housing, and the oil can enter the back pressure chamber through the oil channel.

[0038] Among them, with the operation of the movable scroll plate, the oil filling channel of the fixed scroll plate can be intermittently connected with the oil filling groove of the movable scroll plate and the working chamber to realize intermittent connection and disconnection between the back pressure chamber and the working chamber, and then utilize the pressure difference between the back pressure chamber and the working chamber to make the oil in the back pressure chamber be intermittently injected into the working chamber to seal the gap in the working chamber to prevent gas leakage in the working chamber. At the same time, it can prevent the gas in the working chamber from entering the back pressure chamber through the oil supply channel and the oil filling groove, thereby effectively reducing the gas flow loss during the operation of the scroll compressor, which is beneficial to promoting the energy efficiency of the scroll compressor.

[0039] In addition, the scroll compressor in the present embodiment also has all the beneficial effects of the scroll plate assembly in any one of the above-mentioned first aspect embodiments, which will not be repeated here.

[0040] An embodiment of the third aspect of the present application provides an air conditioner, comprising: an indoor unit; an outdoor unit connected to the indoor unit via a pipeline, wherein the outdoor unit is provided with the scroll compressor of the embodiment of the second aspect described above.

[0041] According to an embodiment of the third aspect of the present application, the air conditioner includes an indoor unit and an outdoor unit connected by a pipeline to achieve air conditioning through the circulation of a refrigerant. The outdoor unit is provided with a scroll compressor in the embodiment of the second aspect, which is used to compress the refrigerant and change the state of the refrigerant to meet the operating requirements of the air conditioner.

[0042] In addition, the air conditioner in this solution also has all the beneficial effects of the scroll compressor in the above-mentioned second aspect embodiment, which will not be repeated here.

[0043] Additional aspects and advantages of the embodiments of the present application will become apparent in the following description or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The above and / or additional aspects and advantages of the embodiments of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0045] Figure 1 A cross-sectional view of a scroll compressor according to an embodiment of the present application is shown;

[0046] Figure 2 Shows Figure 1 A partial schematic diagram of

[0047] Figure 3 A schematic diagram of the upper structure of a fixed scroll according to an embodiment of the present application is shown;

[0048] Figure 4 A schematic diagram of the lower structure of a movable scroll according to an embodiment of the present application is shown;

[0049] Figure 5 A schematic diagram of a fixed scroll according to an embodiment of the present application is shown;

[0050] Figure 6 Shows Figure 5 AA section view in the figure;

[0051] Figure 7 A schematic diagram of a movable scroll according to an embodiment of the present application is shown;

[0052] Figure 8 Shows Figure 7 Middle BB section view;

[0053] Fig. 9 A schematic diagram of a fixed scroll according to an embodiment of the present application is shown;

[0054] Fig.10 A cross-sectional view of a scroll assembly according to one embodiment of the present application is shown;

[0055] Fig.11 A schematic diagram of a scroll assembly according to an embodiment of the present application is shown;

[0056] Fig.12 A cross-sectional view of a scroll assembly according to one embodiment of the present application is shown;

[0057] Fig.13 A schematic diagram of a scroll assembly according to an embodiment of the present application is shown;

[0058] Fig.14 A cross-sectional view of a scroll assembly according to one embodiment of the present application is shown;

[0059] Fig.15A schematic diagram of a scroll assembly according to an embodiment of the present application is shown;

[0060] Fig.16 A cross-sectional view of a scroll assembly according to one embodiment of the present application is shown;

[0061] Fig.17 A schematic diagram of a scroll assembly according to an embodiment of the present application is shown;

[0062] Fig.18 A cross-sectional view of a scroll assembly according to one embodiment of the present application is shown;

[0063] Fig.19 A schematic diagram of a scroll assembly according to an embodiment of the present application is shown;

[0064] Fig. 20 A cross-sectional view of a scroll assembly according to one embodiment of the present application is shown;

[0065] Fig.21 A schematic diagram of a scroll assembly according to an embodiment of the present application is shown;

[0066] Fig. 22 A cross-sectional view of a scroll assembly according to one embodiment of the present application is shown;

[0067] Fig.23 A schematic diagram of a scroll assembly according to an embodiment of the present application is shown;

[0068] Fig.24 A cross-sectional view of a scroll assembly according to one embodiment of the present application is shown;

[0069] Fig.25 A schematic diagram of a scroll assembly according to an embodiment of the present application is shown;

[0070] Fig.26 A schematic block diagram of an air conditioner according to an embodiment of the present application is shown.

[0071] in, Figures 1 to 26 The corresponding relationship between the reference numerals and component names is as follows:

[0072] 1 scroll assembly, 11 static disk, 111 static disk end plate, 1111 bottom wall, 1112 side wall, 112 static disk scroll, 113 air inlet hole, 114 exhaust hole, 115 oil injection channel, 1151 oil injection hole, 1152 connecting hole, 1153 back pressure hole, 12 moving disk, 121 moving disk end plate, 122 moving disk scroll, 123 oil injection groove, 124 eccentric bearing, 13 working chamber, 131 first chamber, 132 second chamber, 2 scroll compressor, 21 housing, 211 air inlet pipe, 212 exhaust pipe, 213 back pressure chamber, 214 exhaust chamber, 22 frame, 23 driving assembly, 231 motor, 232 crankshaft, 3 air conditioner, 31 indoor unit, 32 outdoor unit. DETAILED DESCRIPTION

[0073] In order to more clearly understand the above-mentioned purposes, features and advantages in the embodiments of the present application, the embodiments of the present application are 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.

[0074] In the following description, many specific details are set forth to facilitate a full understanding of the embodiments of the present application. However, the embodiments of the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0075] Refer to the following Figures 1 to 26 A scroll assembly, a scroll compressor, and an air conditioner according to some embodiments of the present application are described.

[0076] Embodiment 1

[0077] In this embodiment, a scroll assembly 1 is provided, which can be used in a scroll compressor 2 .

[0078] like Figure 1 and Figure 2 As shown, the scroll assembly 1 includes a stationary disk 11 (ie, a stationary scroll) and a moving disk 12 (ie, a moving scroll). The moving disk 12 is meshed with the stationary disk 11 and forms a working chamber 13 with the stationary disk 11.

[0079] The moving plate 12 can move translationally relative to the stationary plate 11 , and during the operation of the moving plate 12 , the shape and volume of the working chamber 13 change dynamically.

[0080] An air inlet hole 113 and an air outlet hole 114 are provided on the stator 11 ; when assembled on the scroll compressor 2 , the air inlet hole 113 is communicated with the air inlet pipe 211 of the scroll compressor 2 , and the air outlet hole 114 is communicated with the air outlet chamber 214 of the scroll compressor 2 .

[0081] During the operation of the scroll compressor 2, gas can enter the working chamber 13 through the air inlet 113, and the gas in the working chamber 13 is compressed under the action of the moving disk 12; the compressed gas can be discharged through the exhaust hole 114 to the exhaust chamber 214 of the scroll compressor 2, and then discharged to the outside through the exhaust pipe 212.

[0082] Among them, Figure 3 and Figure 4 As shown, the stationary plate 11 is provided with an oil injection channel 115, and correspondingly, the movable plate 12 is provided with an oil injection groove 123, and the oil injection groove 123 can be communicated with the back pressure chamber 213 of the scroll compressor 2. During the operation of the movable plate 12, the oil injection groove 123 can be intermittently communicated with the oil injection channel 115 and the working chamber 13, so that the back pressure chamber 213 is connected with the working chamber 13, and the oil injection groove 123 can be intermittently disconnected from the oil injection channel 115 and the working chamber 13.

[0083] There is a pressure difference between the working chamber 13 and the back pressure chamber 213. Under the action of pressure, the oil in the back pressure chamber 213 can flow into the working chamber 13 through the oil filling groove 123 and the oil filling channel 115 to achieve intermittent oil filling to lubricate the fitting surface between the moving plate 12 and the stationary plate 11 and, at the same time, seal the gap in the working chamber 13.

[0084] It should be noted that there is a tiny gap between the fitting surfaces of the moving disk 12 and the stationary disk 11 of the scroll compressor 2. Normally, gas will flow into or out of the working chamber 13 under pressure, causing flow loss of gas.

[0085] The scroll assembly 1 in this embodiment can effectively prevent the gas in the working chamber 13 from leaking to the back pressure chamber 213, and can prevent the gas in the back pressure chamber 213 from entering the working chamber 13 through the oil injection channel 115, thereby reducing the flow loss of gas during the operation of the scroll assembly 1, which is beneficial to promoting the energy efficiency of the scroll compressor 2.

[0086] It can be understood that the pressure of the back pressure chamber 213 of the scroll compressor 2 is usually between the suction pressure and the exhaust pressure. The oil in the oil storage space of the scroll compressor 2 can enter the back pressure chamber 213 under pressure to provide oil to the working chamber 13.

[0087] Embodiment 2

[0088] This embodiment provides a scroll assembly 1, which is further improved on the basis of the first embodiment.

[0089] like Figures 1 to 4As shown, as the pressure in the working chamber 13 changes, the oil injection channel 115 is alternately connected and disconnected with the oil injection groove 123 and the working chamber 13 .

[0090] When the pressure of the working chamber 13 is greater than the pressure of the back pressure chamber 213, the pressure of the working chamber 13 is higher at this time. Through the operation of the moving disk 12, the connection between the oil injection channel 115 and the oil injection groove 123 and the working chamber 13 is disconnected to prevent the gas in the working chamber 13 from entering the back pressure chamber 213 through the oil injection channel 115 and the oil injection groove 123, so as to reduce gas loss.

[0091] When the pressure of the working chamber 13 is lower than the pressure of the back pressure chamber 213, the pressure of the working chamber 13 is relatively low at this time. Through the operation of the movable disk 12, the oil injection channel 115 is connected with the oil injection groove 123 and the working chamber 13, and a pressure difference is formed between the back pressure chamber 213 and the working chamber 13, so that the oil in the back pressure chamber 213 enters the working chamber 13 through the oil injection groove 123 and the oil injection channel 115 under the action of pressure, so as to seal the gap of the working chamber 13 and prevent gas from leaking into the back pressure chamber 213 through the gap.

[0092] The arrangement in this embodiment can reduce the gas flow loss caused by the gap of the working chamber 13, and at the same time can prevent the oil injection channel 115 and the oil injection groove 123 from causing gas loss themselves, thereby better improving the energy efficiency of the scroll compressor 2.

[0093] Embodiment 3

[0094] This embodiment provides a scroll assembly 1, which is further improved on the basis of the second embodiment.

[0095] like Figures 1 to 4 As shown, the stator 11 specifically includes a stator end plate 111 (i.e., a first end plate) and a stator scroll 112 (i.e., a stator scroll structure). The stator scroll 112 is disposed on the bottom surface of the stator end plate 111 and is disposed in a spiral shape. An exhaust hole 114 is located in the stator scroll 112 for easy exhaust.

[0096] like Figure 5 and Figure 6 As shown, the oil injection channel 115 specifically includes an oil injection hole 1151, a connecting hole and a back pressure hole 1153. The back pressure hole 1153 is arranged on the bottom surface of the static disk end plate 111, and the oil injection hole 1151 is arranged on the bottom surface of the static disk volute 112, and the oil injection hole 1151 and the back pressure hole 1153 are both blind holes; the connecting hole 1152 is arranged inside the static disk end plate 111 and the static disk volute 112, and the two ends of the connecting hole 1152 are connected to the oil injection hole 1151 and the back pressure hole 1153 respectively, thereby forming a through oil injection channel 115.

[0097] During the operation of the scroll compressor 2, the moving plate 12 moves linearly relative to the stationary plate 11, and the back pressure hole 1153 is alternately opened and closed. At the same time, the oil filling groove 123 is alternately connected and disconnected with the oil filling hole 1151, thereby making the back pressure chamber 213 of the scroll compressor 2 alternately connected and disconnected with the working chamber 13.

[0098] It should be noted that the bottom surface and the top surface in this embodiment are both based on the height direction of the static plate 11 in the assembled state as a reference. Figure 1 and Figure 2 Status in Figure 3 What is shown in FIG. 1 is a schematic diagram of the lower structure of the stator disk 11, not the orientation in the assembled state.

[0099] Embodiment 4

[0100] This embodiment provides a scroll assembly 1, which is further improved on the basis of the third embodiment.

[0101] like Figures 1 to 4 As shown, the moving disk 12 specifically includes a moving disk end plate 121 (i.e., a second end plate) and a moving disk scroll 122 (i.e., a moving scroll structure), and the moving disk scroll 122 is disposed on the top surface of the moving disk end plate 121, and forms a scroll-shaped arrangement adapted to the stationary disk scroll 112. The moving disk scroll 122 meshes with the stationary disk scroll 112, and forms a working chamber 13 with the stationary disk scroll 112.

[0102] The shape and volume of the working chamber 13 will change with the operation of the moving disc 12. An oil injection groove 123 is provided on the top surface of the moving disc end plate 121 at a position outside the moving disc scroll 122, so that after the top surface of the moving disc end plate 121 is attached to the bottom surface of the stationary disc scroll 112, the oil injection groove 123 can be intermittently connected and disconnected with the oil injection hole 1151 with the operation of the moving disc 12.

[0103] Among them, one end of the oil filling groove 123 extends to the edge of the moving plate end plate 121, so that when the scroll plate assembly 1 is assembled with the scroll compressor 2, the oil filling groove 123 can be connected with the back pressure chamber 213 of the scroll compressor 2; the other end of the oil filling groove 123 extends in the direction close to the moving plate scroll 122 to correspond to the position of the oil filling hole 1151, so that it can be connected with the oil filling hole 1151 to facilitate the oil filling operation.

[0104] Furthermore, the aperture of the back-pressure hole 1153 is smaller than the tooth thickness of the movable disk scroll 122, so that when the movable disk scroll 122 moves to the position of the back-pressure hole 1153, it can completely block the back-pressure hole 1153, so that the back-pressure hole 1153 and the working chamber 13 are alternately connected and disconnected, thereby preventing the back-pressure hole 1153 and the movable disk scroll 122 from having a size mismatch, which would cause gas to leak into the back-pressure chamber 213 through the back-pressure hole 1153.

[0105] Embodiment 5

[0106] This embodiment provides a scroll assembly 1, which is further improved on the basis of the fourth embodiment.

[0107] like Figure 7 As shown, one end of the oil filling groove 123 close to the movable disk scroll 122 is an arc structure, specifically a semicircular structure, which is easy to process and shape, and can guide the oil when it flows through.

[0108] The width of the oil filling groove 123 is equal to the diameter of the arc structure, so that the oil filling groove 123 as a whole forms a long strip of equal width, which is easy to process and can reduce the pressure change of the oil caused by the width change when the oil flows through.

[0109] Furthermore, the width of the oil filling groove 123 is greater than or equal to 1 mm, and the depth is greater than or equal to 0.5 mm, so that when the moving plate end plate 121 and the stationary plate 11 are in contact, the oil filling groove 123 can maintain a suitable flow area to prevent the oil filling groove 123 from being too narrow and affecting the normal flow of oil.

[0110] Embodiment 6

[0111] This embodiment provides a scroll assembly 1, which is further improved on the basis of the fourth embodiment.

[0112] like Figure 1 , Figure 2 and Figure 8 As shown, an eccentric bearing 124 is provided at the bottom of the moving plate end plate 121. When the scroll plate assembly 1 is assembled on the scroll compressor 2, the eccentric bearing 124 can be connected to the eccentric component of the driving mechanism (such as a crankshaft), thereby realizing the eccentric connection of the moving plate 12. When the scroll compressor 2 is working, the moving plate 12 can be driven by the eccentric component of the driving mechanism to move relative to the static plate 11 to compress the gas.

[0113] Embodiment 7

[0114] This embodiment provides a scroll assembly 1, which is further improved on the basis of the fourth embodiment.

[0115] like Figures 1 to 3 as well as Fig. 9 As shown, the stator end plate 111 of the stator 11 includes a bottom wall 1111 and a side wall 1112, the side wall 1112 is arranged along the circumferential direction of the bottom wall 1111, and the stator scroll 112 is located on the inner side of the side wall 1112. The air inlet hole 113 is arranged along the radial direction of the stator end plate 111 to facilitate connection with the air inlet pipe 211 of the scroll compressor 2; at the same time, the air inlet hole 113 passes through the side wall 1112 of the stator end plate 111 to facilitate communication with the working chamber 13.

[0116] When the air inlet hole 113 and the working chamber 13 are in a connected state, an air suction operation is performed, and the gas enters the working chamber 13 through the air inlet hole 113; as the moving disk 12 rotates, the air inlet hole 113 and the working chamber 13 are disconnected, and then the gas in the working chamber 13 is compressed, and the compressed gas is discharged to the exhaust chamber 214 of the scroll compressor 2 through the exhaust hole 114, completing a working cycle.

[0117] There is an angle β between the center line of the air inlet 113 and the back pressure hole 1153, so that a suitable interval is maintained between the back pressure hole 1153 and the air inlet 113. Specifically, Fig. 9 As shown, in the direction in which the stator scroll 112 gradually shrinks (i.e. Fig. 9 The center line of the air inlet hole 113 rotates around the center point of the stator disk 11 by an angle β to the center point of the back pressure hole 1153, and 225°≤angle β≤315°. Within this range, the back pressure hole 1153 can obtain a better back pressure.

[0118] Embodiment 8

[0119] This embodiment provides a scroll assembly 1, which is further improved on the basis of the fourth embodiment.

[0120] like Figures 1 to 4 As shown, the air inlet 113 extends to the outside of the static disk scroll 112, and the back pressure hole 1153 is located on the inside of the static disk scroll 112. During the operation of the moving disk 12, the moving disk 12 can separate the back pressure hole 1153 from the air inlet 113, so that the back pressure hole 1153 is always disconnected from the air inlet 113 to prevent the oil injection operation from affecting the air intake process, and at the same time, during the compression process, it can also prevent the gas from leaking out of the air inlet 113.

[0121] Embodiment 9

[0122] This embodiment provides a scroll assembly 1, which is further improved on the basis of the fourth embodiment.

[0123] like Figure 1 , Figure 2 and Fig.10 As shown, the working chamber 13 includes a first chamber 131 and a second chamber 132. Specifically, the first chamber 131 is formed between the outer side of the moving disk scroll 122 and the inner side of the stationary disk scroll 112, and the second chamber 132 is formed between the inner side of the moving disk scroll 122 and the outer side of the stationary disk scroll 112.

[0124] As the moving disk 12 operates, the shapes and volumes of the first chamber 131 and the second chamber 132 change periodically. In this process, the back pressure hole 1153 is alternately connected with the first chamber 131 and the second chamber 132, and when the moving disk scroll 122 blocks the back pressure hole 1153, the connection between the back pressure hole 1153 and the first chamber 131 and the second chamber 132 is disconnected.

[0125] Among them, due to the pressure difference between the back pressure chamber 213 and the working chamber 13, as the moving disk 12 operates, the oil in the back pressure chamber 213 can be alternately injected into the first chamber 131 and the second chamber 132 under pressure to seal the gaps between the first chamber 131 and the second chamber 132 respectively, and further prevent the gas in the working chamber 13 from leaking out through the gaps.

[0126] Furthermore, one translation of the moving plate 12 relative to the stationary plate 11 is a working cycle. During one working cycle, the first chamber 131 and the second chamber 132 are connected to the back pressure hole 1153 once respectively, and accordingly, the back pressure chamber 213 injects oil into the first chamber 131 and the second chamber 132 once respectively, so that the oil injection operation matches the working cycle of the moving plate 12. Among them, between two oil injection processes, the back pressure hole 1153 is closed to prevent the gas from flowing back from the back pressure hole 1153 into the back pressure chamber 213.

[0127] Embodiment 10

[0128] This embodiment provides a scroll assembly 1, which is further improved on the basis of the ninth embodiment.

[0129] The maximum volume of the first chamber 131 is greater than the maximum volume of the second chamber 132, that is, the maximum volumes of the first chamber 131 and the second chamber 132 are different, and there is a volume difference between the two. Among them, the connection time of the first chamber 131 and the back pressure chamber 213 is greater than or equal to the connection time of the second chamber 132 and the back pressure chamber 213, that is, the connection time of the back pressure chamber 213 and the first chamber 131 is not less than the connection time of the back pressure chamber 213 and the second chamber 132, so that the connection time of the first chamber 131 and the second chamber 132 with the back pressure chamber 213 is matched with their respective maximum volumes, so as to achieve different exhaust volumes of the first chamber 131 and the second chamber 132, so as to be applied to an asymmetric scroll compressor.

[0130] A specific embodiment of the scroll assembly 1 is provided below:

[0131] In this embodiment, a scroll assembly 1 is provided, which can be used for a scroll assembly 1 .

[0132] like Figure 1 and Figure 2As shown, the scroll assembly 1 includes a stationary disk 11 (ie, a stationary scroll) and a moving disk 12 (ie, a moving scroll). The moving disk 12 is meshed with the stationary disk 11 and forms a working chamber 13 with the stationary disk 11.

[0133] The stator 11 specifically includes a stator end plate 111 (i.e., a first end plate) and a stator scroll 112 (i.e., a stator scroll structure). The stator scroll 112 is disposed on the bottom surface of the stator end plate 111 and is disposed in a spiral shape. The stator end plate 111 includes a bottom wall 1111 and a side wall 1112, the side wall 1112 is disposed along the circumferential direction of the bottom wall 1111, and the stator scroll 112 is located on the inner side of the side wall 1112.

[0134] like Figures 1 to 3 As shown, an air inlet hole 113 and an air outlet hole 114 are provided on the stator 11; the air inlet hole 113 is provided along the radial direction of the stator end plate 111 so as to be connected to the air inlet pipe 211 of the scroll compressor 2; at the same time, the air inlet hole 113 passes through the side wall 1112 of the stator end plate 111 so as to be able to be connected with the working chamber 13. The air outlet hole 114 is located in the stator scroll 112 for exhaust. When assembled on the scroll compressor 2, the air inlet hole 113 is connected to the air inlet pipe 211 of the scroll compressor 2, and the air outlet hole 114 is connected to the exhaust chamber 214 of the scroll compressor 2.

[0135] like Figures 1 to 4 As shown, the moving disk 12 specifically includes a moving disk end plate 121 (i.e., a second end plate) and a moving disk scroll 122 (i.e., a moving scroll structure), and the moving disk scroll 122 is disposed on the top surface of the moving disk end plate 121, and forms a scroll-shaped arrangement adapted to the stationary disk scroll 112. The moving disk scroll 122 meshes with the stationary disk scroll 112, and forms a working chamber 13 with the stationary disk scroll 112.

[0136] The moving disk 12 can move linearly relative to the stationary disk 11. During the operation of the scroll compressor 2, gas can enter the working chamber 13 through the air inlet 113, and the gas in the working chamber 13 is compressed under the action of the moving disk 12; the compressed gas can be discharged through the exhaust hole 114 to the exhaust chamber 214 of the scroll compressor 2, and then discharged to the outside through the exhaust pipe 212.

[0137] like Figure 3 and Figure 4 As shown, the stationary plate 11 is provided with an oil injection channel 115 , and correspondingly, the movable plate 12 is provided with an oil injection groove 123 , and the oil injection groove 123 can be communicated with the back pressure chamber 213 of the scroll compressor 2 .

[0138] like Figure 5 and Figure 6As shown, the oil injection channel 115 specifically includes an oil injection hole 1151, a connecting hole and a back pressure hole 1153. The back pressure hole 1153 is arranged on the bottom surface of the static disk end plate 111, and the oil injection hole 1151 is arranged on the bottom surface of the static disk volute 112, and the oil injection hole 1151 and the back pressure hole 1153 are both blind holes; the connecting hole 1152 is arranged inside the static disk end plate 111 and the static disk volute 112, and the two ends of the connecting hole 1152 are connected to the oil injection hole 1151 and the back pressure hole 1153 respectively, thereby forming a through oil injection channel 115.

[0139] like Figure 7 As shown, an oil filling groove 123 is provided on the top surface of the moving plate end plate 121 at a position outside the moving plate scroll 122, and one end of the oil filling groove 123 extends to the edge of the moving plate end plate 121, so that when the scroll assembly 1 is assembled with the scroll compressor 2, the oil filling groove 123 can be connected with the back pressure chamber 213 of the scroll compressor 2; the other end of the oil filling groove 123 extends in a direction close to the moving plate scroll 122 to correspond to the position of the oil filling hole 1151, so that it can be connected with the oil filling hole 1151 to facilitate the oil filling operation.

[0140] During the operation of the movable plate 12, the oil injection groove 123 can be intermittently connected with the oil injection channel 115 and the working chamber 13, so that the back pressure chamber 213 is connected with the working chamber 13, and the oil injection groove 123 can be intermittently disconnected from the oil injection channel 115 and the working chamber 13. In this process, the movable plate 12 can separate the back pressure hole 1153 from the air inlet hole 113, so that the back pressure hole 1153 is always disconnected from the air inlet hole 113, so as to prevent the oil injection operation from affecting the air intake process.

[0141] Among them, Figure 5 and Figure 7 As shown, the aperture of the back pressure hole 1153 is smaller than the tooth thickness of the movable disk scroll 122, so that when the movable disk scroll 122 moves to the position of the back pressure hole 1153, it can completely block the back pressure hole 1153, so that the back pressure hole 1153 and the working chamber 13 are alternately connected and disconnected.

[0142] There is a pressure difference between the working chamber 13 and the back pressure chamber 213 . Under the action of pressure, the oil in the back pressure chamber 213 can flow into the working chamber 13 through the oil injection groove 123 and the oil injection channel 115 , thereby achieving intermittent oil injection.

[0143] Specifically, when the pressure of the working chamber 13 is greater than the pressure of the back pressure chamber 213, the pressure of the working chamber 13 is higher at this time. Through the operation of the moving disk 12, the connection between the oil injection channel 115 and the oil injection groove 123 and the working chamber 13 is disconnected to prevent the gas in the working chamber 13 from entering the back pressure chamber 213 through the oil injection channel 115 and the oil injection groove 123, so as to reduce gas loss.

[0144] When the pressure of the working chamber 13 is lower than the pressure of the back pressure chamber 213, the pressure of the working chamber 13 is relatively low at this time. Through the operation of the movable disk 12, the oil injection channel 115 is connected with the oil injection groove 123 and the working chamber 13, and a pressure difference is formed between the back pressure chamber 213 and the working chamber 13, so that the oil in the back pressure chamber 213 enters the working chamber 13 through the oil injection groove 123 and the oil injection channel 115 under the action of pressure, so as to seal the gap of the working chamber 13 and prevent gas from leaking into the back pressure chamber 213 through the gap.

[0145] like Figure 7 As shown, one end of the oil filling groove 123 close to the moving disk scroll 122 is an arc structure, specifically a semicircular structure, which is easy to process and shape, and can guide the oil when the oil flows through. The groove width of the oil filling groove 123 is equal to the diameter of the arc structure, so that the oil filling groove 123 as a whole forms a long strip groove body of equal width, which is easy to process and can reduce the pressure change of the oil caused by the width change when the oil flows through.

[0146] The width of the oil filling groove 123 is greater than or equal to 1 mm, and the depth is greater than or equal to 0.5 mm, so that when the moving plate end plate 121 and the stationary plate 11 are in contact, the oil filling groove 123 can maintain a suitable flow area to prevent the oil filling groove 123 from being too narrow and affecting the normal flow of oil.

[0147] like Figure 1 , Figure 2 and Figure 8 As shown, an eccentric bearing 124 is provided at the bottom of the moving plate end plate 121 for connecting the eccentric component (such as a crankshaft) of the driving mechanism when the scroll assembly 1 is assembled to the scroll compressor 2 .

[0148] like Fig. 9 As shown, there is an angle β between the center line of the inlet hole 113 and the back pressure hole 1153, so that the back pressure hole 1153 and the inlet hole 113 maintain a suitable interval. Specifically, in the direction in which the stator disk scroll 112 gradually shrinks (i.e. Fig. 9 The center line of the air inlet hole 113 rotates around the center point of the stator disk 11 by an angle β to the center point of the back pressure hole 1153, and 225°≤angle β≤315°. Within this range, the back pressure hole 1153 can obtain a better back pressure.

[0149] like Figure 1 , Figure 2 and Fig.10 As shown, the working chamber 13 includes a first chamber 131 and a second chamber 132. Specifically, the first chamber 131 is formed between the outer side of the moving disk scroll 122 and the inner side of the stationary disk scroll 112, and the second chamber 132 is formed between the inner side of the moving disk scroll 122 and the outer side of the stationary disk scroll 112.

[0150] As the moving disk 12 operates, the shapes and volumes of the first chamber 131 and the second chamber 132 change periodically, and the maximum volume of the first chamber 131 is greater than the maximum volume of the second chamber 132. Correspondingly, the duration of the connection between the first chamber 131 and the back pressure chamber 213 is greater than the duration of the connection between the second chamber 132 and the back pressure chamber 213, so as to be applied to an asymmetric scroll compressor. In this process, the back pressure hole 1153 is alternately connected with the first chamber 131 and the second chamber 132, and when the moving disk scroll 122 blocks the back pressure hole 1153, the connection relationship between the back pressure hole 1153 and the first chamber 131 and the second chamber 132 is disconnected.

[0151] The moving plate 12 moves one circle relative to the stationary plate 11 as one working cycle. During one working cycle, the first chamber 131 and the second chamber 132 are connected to the back pressure hole 1153 once respectively, and accordingly, the back pressure chamber 213 injects oil into the first chamber 131 and the second chamber 132 once respectively, so that the oil injection operation matches the working cycle of the moving plate 12. Between the two oil injection processes, the back pressure hole 1153 is closed to prevent the gas from flowing back from the back pressure hole 1153 into the back pressure chamber 213.

[0152] The working process of the moving disc 12 in one working cycle is described in detail below:

[0153] Fig.10 and Fig.11 The back pressure hole 1153 is shown in the state when the driven disk scroll 122 is blocked. At this time, the oil injection groove 123 and the oil injection hole 1151 have been disconnected for a period of time, and the back pressure hole 1153 has just been disconnected from the second chamber 132. As the moving disk 12 continues to rotate, the back pressure hole 1153 is about to enter the first chamber 131. Fig.12 and Fig.13 Status shown.

[0154] Fig.14 and Fig.15 The figure shows the state when the back pressure hole 1153 is connected with the first chamber 131. At this time, the oil filling groove 123 is also connected with the oil filling hole 1151, so that the back pressure chamber 213 and the first chamber 131 are in a connected state. Since the pressure of the first chamber 131 at the back pressure hole 1153 is relatively low (lower than the pressure of the back pressure chamber 213), the oil in the back pressure chamber 213 enters the first chamber 131 under the action of pressure.

[0155] As the moving disk 12 operates, Fig.16 and Fig.17In the state shown, the back pressure hole 1153 is still connected to the first chamber 131, but the oil injection groove 123 is disconnected from the oil injection hole 1151. At this time, the pressure of the first chamber 131 at the back pressure hole 1153 is higher (higher than the pressure of the back pressure chamber 213), but the gas in the first chamber 131 cannot enter the back pressure chamber 213.

[0156] Fig.18 and Fig.19 The back pressure hole 1153 is shown in the state when the driven disk 12 is blocked. At this time, the oil filling groove 123 and the oil filling hole 1151 have been disconnected for a period of time, and the back pressure hole 1153 has just been disconnected from the first chamber 131. As the moving disk 12 continues to rotate, the back pressure hole 1153 is about to enter the second chamber 132. Fig. 20 and Fig.21 Status shown.

[0157] Fig. 22 and Fig.23 The figure shows the state when the back pressure hole 1153 is connected with the second chamber 132. At this time, the oil filling groove 123 is also connected with the oil filling hole 1151, so that the back pressure chamber 213 and the second chamber 132 are in a connected state. Since the pressure of the second chamber 132 at the back pressure hole 1153 is relatively low (lower than the pressure of the back pressure chamber 213), the oil in the back pressure chamber 213 enters the second chamber 132 under the action of pressure.

[0158] As the moving disk 12 operates, Fig.24 and Fig.25 In the state shown, the back pressure hole 1153 is still connected to the second chamber 132, but the oil injection groove 123 is disconnected from the oil injection hole 1151. At this time, the pressure of the second chamber 132 at the back pressure hole 1153 is higher (higher than the pressure of the back pressure chamber 213), but the gas in the second chamber 132 cannot enter the back pressure chamber 213.

[0159] It should be noted that there is a tiny gap between the fitting surfaces of the moving disk 12 and the stationary disk 11 of the scroll compressor 2. Normally, gas will flow into or out of the working chamber 13 under pressure, causing flow loss of gas.

[0160] The scroll assembly 1 in this embodiment can effectively prevent the gas in the working chamber 13 from leaking to the back pressure chamber 213, and can prevent the gas in the back pressure chamber 213 from entering the working chamber 13 through the oil injection channel 115, thereby reducing the flow loss of gas during the operation of the scroll assembly 1, which is beneficial to promoting the energy efficiency of the scroll compressor 2.

[0161] Embodiment 11

[0162] This embodiment provides a scroll compressor 2, such as Figures 1 to 4As shown, the scroll compressor 2 includes a housing 21 , a frame 22 , a scroll assembly 1 in any of the above embodiments, and a drive assembly 23 .

[0163] The frame 22, the scroll assembly 1 and the driving assembly 23 are all arranged in the housing 21. The frame 22 serves as a mounting base for the scroll assembly 1 and the driving assembly 23 to support the scroll assembly 1 and the driving assembly 23.

[0164] The stationary plate 11 of the scroll assembly 1 is fixedly connected to the frame 22 , and a back pressure chamber 213 is formed between the moving plate 12 of the scroll assembly 1 and the frame 22 .

[0165] The output end of the driving assembly 23 is eccentrically connected to the moving plate 12 to drive the moving plate 12 to move in translation relative to the stationary plate 11. Specifically, the driving assembly 23 includes a motor 231 and a crankshaft 232, the eccentric portion of the crankshaft 232 is eccentrically connected to the moving plate 12, and the motor 231 outputs power to the moving plate 12 through the crankshaft 232 to drive the moving plate 12 to move in translation.

[0166] The housing 21 is provided with an air intake pipe 211 and an air exhaust pipe 212. The air intake pipe 211 is connected to the air intake hole 113 of the stator plate 11. The air exhaust hole 114 of the stator plate 11 is connected to the air exhaust pipe 212 through the air exhaust chamber 214 in the housing 21, so as to facilitate air intake and exhaust operations. Oil is stored in the housing 21, and the oil can enter the back pressure chamber 213 through the oil passage.

[0167] Among them, as the moving plate 12 rotates, the oil filling channel 115 of the static plate 11 can be intermittently connected with the oil filling groove 123 of the moving plate 12 and the working chamber 13, so as to realize intermittent connection and disconnection between the back pressure chamber 213 and the working chamber 13, and then utilize the pressure difference between the back pressure chamber 213 and the working chamber 13 to make the oil in the back pressure chamber 213 intermittently injected into the working chamber 13 to seal the gap in the working chamber 13.

[0168] The scroll compressor 2 in this embodiment can effectively prevent gas leakage from the working chamber 13. At the same time, it can prevent the gas in the working chamber 13 from entering the back pressure chamber 213 through the oil supply channel and the oil filling groove 123, thereby effectively reducing the gas flow loss during the operation of the scroll compressor 2, which is beneficial to promoting the scroll compressor 2 to improve energy efficiency.

[0169] In addition, the scroll compressor 2 in this embodiment also has all the beneficial effects of the scroll plate assembly 1 in any of the above embodiments, which will not be repeated here.

[0170] Embodiment 12

[0171] This embodiment provides an air conditioner 3, such as Figure 1 and Fig.26As shown, the air conditioner 3 includes an indoor unit 31 and an outdoor unit 32 connected by a pipeline to achieve air conditioning through the circulation of refrigerant. The outdoor unit 32 is provided with a scroll compressor 2 in any of the above embodiments, which is used to compress the refrigerant and change the state of the refrigerant to meet the operation requirements of the air conditioner 3.

[0172] In addition, the air conditioner 3 in this embodiment also has all the beneficial effects of the scroll compressor 2 in any of the above embodiments, which will not be described in detail here.

[0173] A specific embodiment of the present application is provided below:

[0174] A scroll compressor compression structure includes: a shell, a crankshaft, a moving disk and a stationary disk. The shell is a closed container with an air intake pipe and an air discharge pipe. The shell is a high-pressure environment and stores lubricating oil. The crankshaft has an eccentric portion and rotates around a fixed axis. The moving disk has a mirror plate and a vortex-shaped scroll standing on the front of the mirror plate. The stationary disk is provided with an air intake hole and an air discharge hole, and has a concave vortex-shaped scroll. The stationary disk scroll meshes with the moving disk scroll to form a compressor working chamber. The working chamber sucks low-pressure gas from the shell suction port through the air intake pipe. The low-pressure gas is compressed and discharged into the shell through the air discharge hole of the stationary disk, and finally discharged from the shell exhaust pipe.

[0175] The working chamber includes: chamber A (i.e., the first chamber) between the outer line of the moving disk scroll and the inner line of the static disk scroll, chamber B (i.e., the second chamber) between the inner line of the moving disk scroll and the outer line of the static disk scroll; a back pressure chamber, the pressure of the back pressure chamber is an intermediate pressure between the suction pressure and the exhaust pressure, and the back pressure chamber provides support for the front of the moving disk mirror plate to be close to the top surface of the static disk to prevent the moving disk from overturning. Back pressure hole, the back pressure hole is opened on the inner top surface of the static disk, and as the moving disk moves, the back pressure hole is alternately connected with chamber A and chamber B, and the back pressure hole is covered by the moving disk scroll during the alternation; oil injection hole, the oil injection hole is opened on the bottom surface of the static disk scroll and is connected to the back pressure hole; oil injection groove, the oil injection groove is opened on the front of the moving disk mirror plate and is connected to the back pressure chamber;

[0176] Among them, as the moving disk moves, the oil filling groove is intermittently connected with the oil filling hole, and when the pressure of the back pressure hole increases, before the back pressure hole is covered by the scroll of the passive disk, the oil filling groove and the oil filling hole are disconnected.

[0177] The oil filling hole is opened on the static static disk, and the oil filling groove is opened on the dynamic disk that moves in a plane. By designing the position of the oil filling groove, the oil filling groove and the oil filling hole can be intermittently connected and disconnected, and it is ensured that during the pressure increase of the back pressure hole, before the back pressure hole is covered by the vortex of the passive disk, the oil filling groove and the oil filling hole are disconnected. That is, when the pressure of the working chamber at the back pressure hole is low, the working chamber is connected to the back pressure chamber; when the pressure of the working chamber at the back pressure hole is high, the working chamber is disconnected from the back pressure chamber. The gas in the working chamber is prevented from entering the back pressure chamber, reducing the breathing loss. Since the pressure of the back pressure chamber is lower than the exhaust pressure, the lubricating oil in the shell enters the back pressure chamber through the pressure difference. When the oil filling groove is connected to the oil filling hole, since the pressure of the working chamber at the back pressure hole is lower than the pressure of the back pressure chamber at this time, the lubricating oil is injected from the back pressure chamber into the working chamber, so that the oil supply of the working chamber is realized to seal the gap and prevent gas leakage.

[0178] The shell is provided with an air intake pipe and an air exhaust pipe, and lubricating oil is stored at the bottom. The moving disc has a mirror plate and a vortex-shaped scroll standing on the front of the mirror plate, an eccentric bearing protruding from the back of the mirror plate, and an oil filling groove is provided on the front of the mirror plate. The static disc is provided with an air intake hole and an air exhaust hole, a concave vortex-shaped scroll, a back pressure hole is provided on the inner top surface of the static disc, and an oil filling hole is provided on the bottom surface of the static disc scroll, and the two holes are interconnected through a radial connecting hole. The static disc scroll meshes with the moving disc scroll to form a working chamber of the compressor. There is a working chamber A between the outer line of the moving disc scroll and the inner line of the static disc scroll, and a working chamber B between the inner line of the moving disc scroll and the outer line of the static disc scroll; the compressor is also provided with a main frame to support the crankshaft.

[0179] A back pressure chamber is formed on the back of the mirror plate of the moving disk, and the back pressure chamber is surrounded by the main frame, the static disk and the moving disk. The oil filling groove on the moving disk is connected with the edge of the mirror plate, that is, the oil filling groove is connected with the back pressure chamber.

[0180] On the one hand, the back pressure chamber is connected to the high pressure in the shell through a small gap; on the other hand, when the back pressure hole is connected to the A or B working chamber, and the oil filling groove is also connected to the oil filling hole, the back pressure chamber is connected to the working chamber; thus, the back pressure chamber is at an intermediate pressure between high pressure and low pressure, providing support for the front of the moving disk mirror plate to be close to the top surface of the static disk to prevent the moving disk from overturning. The lubricating oil is pressed into the back pressure chamber from the shell, and then injected into the working chamber, so that the oil supply in the working chamber is realized to seal the gap and prevent gas leakage.

[0181] During the process of the back pressure hole pressure increasing, before the back pressure hole is covered by the scroll of the passive disk, the oil filling groove is disconnected from the oil filling hole, and the back pressure hole is disconnected from the back pressure chamber.

[0182] The oil injection groove is composed of two parallel lines and an arc, the groove width is equal to the arc diameter, the groove width is greater than or equal to 1mm, and the groove depth is greater than or equal to 0.5mm. The oil injection groove is simple and easy to process.

[0183] The center line of the air intake hole rotates around the center of the stator disk in the direction of scroll shrinkage by an angle of β and passes through the back pressure hole, where β is greater than or equal to 225° and less than or equal to 315°. Thus, a better back pressure can be obtained.

[0184] For an asymmetric scroll compressor, the volume of working chamber A is larger than that of working chamber B, so it is preferred that the communication time between the back pressure chamber and chamber A is not less than the communication time between the back pressure chamber and chamber B.

[0185] In order to prevent the oil from being sprayed into the working chamber and affecting the suction, it is preferred that the back pressure hole is not connected to the suction hole of the static plate. When the back pressure hole is about to be connected to the A / B cavity, the A / B cavity has completed the suction closure.

[0186] The above, combined with the accompanying drawings, describes in detail the technical solutions according to some embodiments of the present application, which can effectively prevent the gas in the working chamber from leaking into the back pressure chamber, and can prevent the gas in the back pressure chamber from entering the working chamber through the oil injection channel, thereby reducing the flow loss of the gas during the operation of the scroll assembly, which is beneficial to promoting the energy efficiency of the scroll compressor.

[0187] In the embodiments according to the present application, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. Terms such as "installed", "connected", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. A person of ordinary skill in the art can understand the specific meanings of the above terms in the embodiments according to the present application according to the specific circumstances.

[0188] 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 according to the present application. 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.

[0189] The above are only preferred embodiments of the present application and are not intended to limit the technical solution of the present application. For those skilled in the art, the technical solution of the present application may be modified and varied in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the technical solution of the present application shall be included in the protection scope of the present application.

Claims

1. A scroll assembly for a scroll compressor, characterized in that: include: A fixed scroll plate, wherein the fixed scroll plate is provided with an air inlet hole, an air outlet hole and an oil injection channel; an orbiting scroll, meshing with the fixed scroll and forming a working chamber with the fixed scroll, the orbiting scroll being provided with an oil filling groove connected with the back pressure chamber of the scroll compressor, the orbiting scroll being configured to translate relative to the fixed scroll to compress the gas entering the working chamber; The oil injection channel is intermittently connected with the oil injection groove and the working chamber, so that the oil in the back pressure chamber is intermittently injected into the working chamber under the action of the pressure difference between the back pressure chamber and the working chamber; The fixed scroll plate includes a first end plate and a fixed scroll structure provided on the bottom surface of the first end plate; The oil injection passage comprises an oil injection hole, a connecting hole and a back pressure hole, wherein the oil injection hole is arranged on the bottom surface of the static scroll structure, the back pressure hole is arranged on the bottom surface of the first end plate, and both ends of the connecting hole are respectively connected with the oil injection hole and the back pressure hole; Wherein, the oil filling groove is intermittently connected to the oil filling hole, and the back pressure hole is intermittently connected to the working chamber; The movable scroll plate comprises a second end plate and a movable scroll structure provided on the top surface of the second end plate, wherein the movable scroll structure is meshed with the fixed scroll structure and forms the working chamber between the movable scroll structure and the fixed scroll structure; The oil filling groove is provided on the top surface of the second end plate and is located outside the movable scroll structure, one end of the oil filling groove extends to the edge of the second end plate, and the other end extends in a direction close to the movable scroll structure to correspond to the position of the oil filling hole; One end of the oil filling groove close to the movable scroll structure is an arc structure, and the diameter of the arc structure is equal to the groove width of the oil filling groove, and the arc structure is a semicircular structure; The width of the oil injection groove is greater than or equal to 1 mm, and the depth of the oil injection groove is greater than or equal to 0.5 mm; The working chamber comprises: A first chamber is located between the outer side surface of the movable scroll structure and the inner side surface of the static scroll structure; A second chamber is located between the inner side surface of the movable scroll structure and the outer side surface of the static scroll structure; Wherein, the back pressure hole is alternately connected with the first chamber and the second chamber, so that the oil in the back pressure chamber is alternately injected into the first chamber and the second chamber; The maximum volume of the first chamber is greater than the maximum volume of the second chamber; Wherein, the duration of the connection between the first chamber and the back pressure chamber is greater than or equal to the duration of the connection between the second chamber and the back pressure chamber; The back pressure hole and the air inlet hole are always kept disconnected.

2. The scroll assembly according to claim 1, characterized in that: When the pressure of the working chamber is greater than the pressure of the back pressure chamber, the oil injection channel is disconnected from the oil injection groove and the working chamber; When the pressure of the working chamber is lower than the pressure of the back pressure chamber, the oil injection passage is communicated with the oil injection groove and the working chamber.

3. The scroll assembly according to claim 1, characterized in that: The hole diameter of the back pressure hole is smaller than the tooth thickness of the movable scroll structure.

4. The scroll assembly according to claim 1, characterized in that: A side wall is provided on the bottom surface of the first end plate in a circumferential direction, and the air inlet hole is provided in a radial direction and passes through the side wall; Wherein, in the direction in which the static vortex structure gradually shrinks, the angle between the center line of the air inlet hole and the back pressure hole is 225° to 315°.

5. The scroll assembly according to claim 1, characterized in that: An eccentric bearing is provided at the bottom of the second end plate.

6. The scroll assembly according to any one of claims 1 to 5, characterized in that: The movable scroll plate translates one circle, and oil is respectively injected into the first chamber and the second chamber once.

7. A scroll compressor, characterized in that: include: A housing, wherein an air inlet pipe and an exhaust pipe are provided on the housing, and oil is contained in the housing; A frame, disposed in the housing; The scroll assembly according to any one of claims 1 to 6, arranged on the frame, the air inlet and the air outlet of the scroll assembly are respectively connected to the air inlet pipe and the air outlet pipe, and a back pressure chamber is formed between the movable scroll of the scroll assembly and the frame; A driving assembly is disposed in the housing, wherein an output end of the driving assembly is eccentrically connected to the movable scroll for driving the movable scroll to translate relative to the fixed scroll.

8. An air conditioner, characterized in that: include: Indoor unit; The outdoor unit is connected to the indoor unit through a pipeline, and the scroll compressor as claimed in claim 7 is provided in the outdoor unit.

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