Anti-rotation mechanism for scroll compressor and scroll compressor

Abstract

The application discloses a kind of anti-rotation mechanism for scroll compressor and scroll compressor, and anti-rotation mechanism includes: crank shaft, the end of first shaft is formed with first gap between the inner wall of first mounting space, the end of second shaft is formed with second gap between the inner wall of second mounting space, and airflow passage is formed in crank shaft and is communicated with first gap and second gap;Upper bearing, upper bearing is provided with first heat dissipation gap communicated with second gap;Lower bearing, lower bearing is provided with second heat dissipation gap communicated with first gap.According to the anti-rotation mechanism of the application, airflow passage is formed in crank shaft, airflow passage is communicated with first gap and second gap, upper bearing is provided with first heat dissipation gap communicated with second gap, lower bearing is provided with second heat dissipation gap communicated with first gap, and airflow can circulate in crank shaft, upper bearing and lower bearing, to cool crank shaft, upper bearing and lower bearing.

Description

Technical Field

[0001] This invention relates to the field of scroll compressor technology, and in particular to an anti-rotation mechanism for a scroll compressor and a scroll compressor. Background Technology

[0002] In related technologies, during the operation of a turbo compressor, because the anti-rotation mechanism rotates at the same speed as the scroll rotor, the heat generated by the anti-rotation mechanism causes the crankshaft and bearings to expand due to heat, which exacerbates the wear of the crankshaft and bearings, resulting in noise inside the scroll compressor and reducing the reliability of the scroll compressor.

[0003] In addition, during the rotation of the scroll compressor, the temperature of the anti-rotation mechanism will gradually increase, and the evaporation rate of the lubricating grease will increase with the increase of the temperature of the anti-rotation mechanism. If the lubricating grease is not maintained in time, it will easily evaporate completely, which will lead to the anti-rotation mechanism being worn and failing due to heat, thus reducing the reliability of the scroll compressor during operation. Summary of the Invention

[0004] This invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of this invention is to provide an anti-rotation mechanism for a turbo compressor. According to the invention, the anti-rotation mechanism has an airflow channel formed within the crankshaft, which connects a first gap and a second gap. The upper bearing is provided with a first heat dissipation gap communicating with the second gap, and the lower bearing is provided with a second heat dissipation gap communicating with the first gap. Airflow can circulate within the crankshaft, the upper bearing, and the lower bearing, thereby achieving cooling of the crankshaft, the upper bearing, and the lower bearing.

[0005] The present invention also proposes a scroll compressor having the above-mentioned anti-rotation mechanism.

[0006] The anti-rotation mechanism for a scroll compressor according to the present invention comprises: a housing having an air inlet formed thereon; a frame disposed within the housing, the frame having a first mounting space formed therein; a scroll drive plate disposed on the frame, the scroll drive plate having a second mounting space formed therein, the scroll drive plate having cooling holes communicating with the air inlet; and a crankshaft having a first shaft and a second shaft, the first shaft being received within the first mounting space and cooperating with the frame, the end of the first shaft being connected to the inner surface of the first mounting space. A first gap is formed between the walls, the second shaft is housed in the second mounting space and cooperates with the scroll plate, a second gap is formed between the end of the second shaft and the inner wall of the second mounting space, and an airflow channel is formed in the crankshaft to connect the first gap and the second gap; an upper bearing is disposed between the scroll plate and the crankshaft, and the upper bearing is provided with a first heat dissipation gap communicating with the second gap; a lower bearing is disposed between the frame and the crankshaft, and the lower bearing is provided with a second heat dissipation gap communicating with the first gap.

[0007] According to the present invention, the anti-rotation mechanism has a first mounting space formed inside the frame and a second mounting space formed inside the scroll rotor. The scroll rotor also has cooling holes that connect the external environment to the second mounting space. An airflow channel is formed inside the crankshaft, connecting the first and second mounting spaces. External airflow can enter the second mounting space through the cooling holes and circulate between the second and first mounting spaces through the airflow channel, thereby cooling the crankshaft and effectively preventing thermal expansion and wear between the crankshaft and other components. This improves the reliability and stability of the scroll compressor during operation. Furthermore, the crankshaft is provided with an upper bearing and a lower bearing. The upper bearing has a first heat dissipation gap communicating with the second space, and the lower bearing has a second heat dissipation gap communicating with the first mounting space. During the flow of air between the first and second mounting spaces, it can flow into the upper and lower bearings through the first and second heat dissipation gaps to cool the upper and lower bearings.

[0008] According to some embodiments of the present invention, the upper bearing is sleeved on the outer periphery of the second shaft, and a third heat dissipation gap communicating with the second gap is formed between the upper bearing and the outer periphery of the second shaft; the lower bearing is sleeved on the outer periphery of the first shaft, and a fourth heat dissipation gap communicating with the first gap is formed between the lower bearing and the outer periphery of the first shaft.

[0009] According to some embodiments of the present invention, the diameters of the free ends of the first shaft and the second shaft gradually decrease in the direction away from each other.

[0010] According to some embodiments of the present invention, the upper bearing includes: a first inner ring, which is sleeved on the outer periphery of the second shaft; and a first outer ring, which is disposed on the outer periphery of the first inner ring and cooperates with the scroll plate; the lower bearing includes: a second inner ring, which is sleeved on the outer periphery of the first shaft; and a second outer ring, which is disposed on the outer periphery of the second inner ring and cooperates with the frame.

[0011] According to some embodiments of the present invention, the upper bearing is constructed as a plurality of bearings sleeved on the second shaft and arranged sequentially in the axial direction; the lower bearing is constructed as a plurality of bearings sleeved on the first shaft and arranged sequentially in the axial direction.

[0012] According to some embodiments of the present invention, at least one of the first inner rings and the second shaft are integrally formed, and at least one of the second inner rings and the first shaft are integrally formed.

[0013] According to some embodiments of the present invention, the vortex rotating disk includes: a rotating disk body having a second mounting space formed thereon, which is open to one end; and a first fastening cover fixed to the rotating disk body and closing the second mounting space, wherein the first fastening cover abuts against the end face of the upper bearing.

[0014] According to some embodiments of the present invention, the frame includes: a frame body, wherein a first mounting space is formed within the frame body and opens to one end; a rear cover, wherein the rear cover is disposed on the frame body and closes the first mounting space, wherein a first gap is formed between the rear cover and the first shaft, and the rear cover abuts against the end of the lower bearing.

[0015] According to some embodiments of the present invention, a groove is formed in the rear cover plate that is recessed away from the second axis, and the first gap is formed in the groove.

[0016] The scroll compressor according to the present invention is briefly described below.

[0017] The scroll compressor according to the present invention is provided with an anti-rotation mechanism as described in any of the above embodiments. Since the scroll compressor according to the present invention is provided with an anti-rotation mechanism as described in any of the above embodiments, the anti-rotation mechanism can be cooled when its temperature rises during operation, so that the temperature of the anti-rotation mechanism is kept within a certain range, thereby improving the stability and reliability of the scroll compressor during operation.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a cross-sectional view of an anti-rotation mechanism according to an embodiment of the present invention.

[0021] Figure label:

[0022] Anti-rotation mechanism 100;

[0023] 11. Housing; 12. Frame body; 13. Moving plate body; 14. First fastening cover; 15. Rear cover;

[0024] First shaft 161, second shaft 162, upper bearing 163, lower bearing 164;

[0025] First gap 101, second gap 102, airflow channel 103, cooling hole 104, third heat dissipation gap 105, fourth heat dissipation gap 106. Detailed Implementation

[0026] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0027] In related technologies, during the operation of a turbo compressor, because the anti-rotation mechanism rotates at the same speed as the scroll rotor, the heat generated by the anti-rotation mechanism causes the crankshaft and bearings to expand due to heat, which exacerbates the wear of the crankshaft and bearings, resulting in noise inside the scroll compressor and reducing the reliability of the scroll compressor.

[0028] In addition, during the rotation of the scroll compressor, the temperature of the anti-rotation mechanism will gradually increase, and the evaporation rate of the lubricating grease will increase with the increase of the temperature of the anti-rotation mechanism. If the lubricating grease is not maintained in time, it will easily evaporate completely, which will lead to the anti-rotation mechanism being worn and failing due to heat, thus reducing the reliability of the scroll compressor during operation.

[0029] The following is for reference. Figure 1 An anti-rotation mechanism for a scroll compressor according to an embodiment of the present invention is described.

[0030] The anti-rotation mechanism 100 for a scroll compressor according to the present invention includes: a housing 11, a frame, a scroll rotor, a crankshaft, an upper bearing 163, and a lower bearing 164. An air inlet is formed on the housing 11. The frame is disposed within the housing 11, and a first mounting space is formed within the frame. The scroll rotor is disposed on the frame, and a second mounting space is formed within the scroll rotor. A cooling hole 104 is formed on the scroll rotor, connecting the second mounting space to the air inlet. The crankshaft is provided with a first shaft 161 and a second shaft 162. The first shaft 161 is received within the first mounting space and cooperates with the frame. The end of the first shaft 161 is connected to the first mounting space. A first gap 101 is formed between the inner walls of the mounting space. A second shaft 162 is housed in the second mounting space and cooperates with the scroll plate. A second gap 102 is formed between the end of the second shaft 162 and the inner wall of the second mounting space. An airflow channel 103 is formed inside the crankshaft, connecting the first gap 101 and the second gap 102. An upper bearing 163 is disposed between the scroll plate and the crankshaft, and the upper bearing 163 is provided with a first heat dissipation gap communicating with the second gap 102. A lower bearing 164 is disposed between the frame and the crankshaft, and the lower bearing 164 is provided with a second heat dissipation gap communicating with the first gap 101.

[0031] During operation, the tangential force acting on the scroll compressor generates a rotational torque that causes the scroll to rotate around the eccentric line of the main shaft. This rotational torque disrupts the normal operation of the scroll compressor. Therefore, an anti-rotation mechanism 100 needs to be installed inside the scroll compressor to strictly limit the rotation of the scroll to ensure the correct meshing of the scroll moving and stationary discs and make the scroll compressor work stably and reliably.

[0032] The scroll compressor in this application is provided with at least three anti-rotation mechanisms 100. In some specific embodiments, the anti-rotation mechanism 100 is composed of a housing 11, a frame, a scroll moving plate, a crankshaft, an upper bearing 163, and a lower bearing 164. An air inlet and an air outlet are formed on the housing 11. The air inlet can communicate with the external environment, and the air outlet can communicate with other equipment. The communication object of the air outlet depends on the application of the scroll compressor. A frame is provided inside the housing 11. The frame can be used to support and fix the various components inside the scroll compressor, and at the same time, it plays a role in protecting and isolating them. The scroll moving plate is set on the frame. A first installation space is formed inside the frame, and a second installation space is formed inside the scroll moving plate. A cooling hole 104 is also formed on the scroll moving plate. The air inlet and the second installation space are connected through the cooling hole 104. The cooling hole 104 can guide the airflow entering the scroll compressor from the air inlet to the second installation space. A crankshaft is also provided inside the housing 11. The crankshaft includes a first shaft 161 and a second shaft 162. The first shaft 161 is housed in a first mounting space, and the second shaft 162 is housed in a second mounting space. A lower bearing 164 is provided between at least a portion of the outer peripheral wall of the first shaft 161 and at least a portion of the inner wall of the first mounting space. An upper bearing 163 is provided between at least a portion of the outer peripheral wall of the second shaft 162 and at least a portion of the inner wall of the second mounting space. The anti-rotation mechanism 100 circumferentially limits the scroll plate by means of the crankshaft, the upper bearing 163, and the lower bearing 164. Specifically, when the scroll plate has a tendency to rotate, due to... At least three identical anti-rotation mechanisms 100 are arranged around the circumference of the vortex moving disk, and their relative positions are fixed. Since the first shaft 161 of the anti-rotation mechanism 100 is fixed in the frame, the first shaft 161 can only rotate in place and cannot undergo circumferential angular displacement. The second shaft 162 is tightly set in the vortex moving disk through the upper bearing 163. Since the vortex moving disk is restricted by the three crank shafts at the same time, it cannot undergo circumferential angular displacement and therefore cannot rotate. Furthermore, the eccentricity of the three crank shafts is equal to the rotation radius of the vortex moving disk, that is, the eccentricity of the eccentric shaft. Therefore, the vortex moving disk can only revolve around the rotation center of the eccentric shaft, that is, perform translational rotational motion.

[0033] Furthermore, a first gap 101 is formed between the end of the first shaft 161 and at least a portion of the inner wall of the first mounting space, and a second gap 102 is formed between the end of the second shaft 162 and at least a portion of the inner wall of the second mounting space. An airflow channel 103 is formed inside the crankshaft, passing through both ends of the crankshaft and connecting the first gap 101 and the second gap 102. Airflow entering the turbo compressor through the intake port enters the second gap 102 through the cooling hole 104. The airflow in the second gap 102 is guided into the first gap 101 through the airflow channel 103. Airflow flowing into the first gap 101 can also flow back to the second gap 102 and be discharged from the outlet. During this process, the airflow is continuous, thereby cooling the crankshaft, reducing crankshaft wear, and improving the reliability and stability of the scroll compressor during operation. A first heat dissipation gap is provided on the upper bearing 163, and a second heat dissipation gap is provided on the lower bearing 164. The first heat dissipation gap is connected to the second gap 102, and the second heat dissipation gap is connected to the first gap 101. The airflow in the second gap 102 can diffuse into the first heat dissipation gap, thereby cooling the upper bearing 163. The airflow in the first gap 101 can diffuse into the second heat dissipation gap, thereby cooling the lower bearing 164. During the operation of the scroll compressor, the upper bearing 163, the lower bearing 164, and the crankshaft are effectively prevented from thermal expansion, reducing the wear of the upper bearing 163, the lower bearing 164, and the crankshaft, and improving the reliability and stability of the scroll compressor.

[0034] In addition, during the assembly process of the anti-rotation mechanism 100 in this application, grease is pre-applied to components such as the upper bearing 163, the lower bearing 164, and the crankshaft. Since the airflow can flow through the airflow channel 103 and the first and second heat dissipation gaps in the crankshaft, the upper bearing 163, and the lower bearing 164 to cool the crankshaft, the upper bearing 163, and the lower bearing 164, the grease evaporation rate is slowed down. It is not necessary to open multiple grease injection holes on the scroll plate or the housing 11, which improves the overall manufacturing precision of the scroll compressor and reduces the manufacturing cost.

[0035] According to the present invention, the anti-rotation mechanism 100 has a first installation space formed inside the frame and a second installation space formed inside the scroll rotor. The scroll rotor also has a cooling hole 104 that connects the external environment with the second installation space. An airflow channel 103 is formed inside the crankshaft, which connects the first installation space and the second installation space. External airflow can enter the second installation space through the cooling hole 104 and circulate between the second installation space and the first installation space through the airflow channel 103, thereby cooling the crankshaft and effectively preventing the crankshaft from thermally expanding and causing wear between it and other components. This improves the reliability and stability of the scroll compressor during operation. In addition, an upper bearing 163 and a lower bearing 164 are provided on the crankshaft. The upper bearing 163 has a first heat dissipation gap that connects to the second space, and the lower bearing 164 has a second heat dissipation gap that connects to the first installation space. During the flow of air between the first and second installation spaces, it can flow into the upper bearing 163 and the lower bearing 164 through the first and second heat dissipation gaps to cool the upper bearing 163 and the lower bearing 164.

[0036] According to some embodiments of the present invention, the upper bearing 163 is sleeved on the outer periphery of the second shaft 162, and a third heat dissipation gap 105 communicating with the second gap 102 is formed between the upper bearing 163 and the outer periphery of the second shaft 162; the lower bearing 164 is sleeved on the outer periphery of the first shaft 161, and a fourth heat dissipation gap 106 communicating with the first gap 101 is formed between the lower bearing 164 and the outer periphery of the first shaft 161.

[0037] In some specific embodiments, a first stepped surface and a second stepped surface are respectively formed on the first shaft 161 and the second shaft 162. The upper bearing 163 is sleeved on the outer periphery of the second shaft 162. One end of the upper bearing 163 abuts against the first stepped surface, and a third heat dissipation gap 105 is formed between the other end of the upper bearing 163 and the second shaft 162. External airflow enters the second gap 102 through the cooling hole 104, and the airflow in the second gap 102 can diffuse into the third heat dissipation gap 105, thereby achieving cooling of the upper bearing 163. The lower bearing 164 is sleeved on the outer periphery of the first shaft 161. One end of the lower bearing 164 abuts against the second stepped surface, and a fourth heat dissipation gap 106 is formed between the other end of the lower bearing 164 and the first shaft 161. The airflow in the second gap 102 flows into the first gap 101 through the airflow channel 103, and the airflow in the first gap 101 can diffuse into the fourth heat dissipation gap 106, thereby achieving cooling of the lower bearing 164 and the frame. This effectively prevents the upper bearing 163 and the lower bearing 164 from thermal expansion during the operation of the scroll compressor, reduces the wear of the upper bearing 163 and the lower bearing 164, and improves the reliability and stability of the scroll compressor. According to some embodiments of the present invention, the diameters of the free ends of the first shaft 161 and the second shaft 162 gradually decrease in the direction away from each other.

[0038] In some specific embodiments, a first annular inclined surface is formed on the free end of the first shaft 161, and a second annular inclined surface is formed on the free end of the second shaft 162. The diameters of the first and second annular inclined surfaces gradually decrease in the direction toward each other, so that there is a certain space between the free end of the first shaft 161 and the end of the lower bearing 164 to form a fourth heat dissipation gap 106. There is a certain space between the free end of the second shaft 162 and the end of the upper bearing 163 to form a third heat dissipation gap 105. External airflow enters the second gap 102 through the cooling hole 104. The airflow in the second gap 102 can diffuse into the third heat dissipation gap 105, thereby cooling the upper bearing 163. The airflow in the second gap 102 flows into the first gap 101 through the airflow channel 103. The airflow in the first gap 101 can diffuse into the fourth heat dissipation gap 106, thereby cooling the lower bearing 164 and the frame.

[0039] According to some embodiments of the present invention, the upper bearing 163 includes: a first inner ring and a first outer ring, the first inner ring being sleeved on the outer periphery of the second shaft 162; the first outer ring being disposed on the outer periphery of the first inner ring, and the first outer ring cooperating with the scroll plate; the lower bearing 164 includes: a second inner ring and a second outer ring, the second inner ring being sleeved on the outer periphery of the first shaft 161; the second outer ring being disposed on the outer periphery of the second inner ring, and the second outer ring cooperating with the frame.

[0040] In some specific embodiments, the upper bearing 163 consists of a first inner ring, a first outer ring, and balls. The first inner ring is fitted around at least a portion of the outer periphery of the second shaft 162, and the first outer ring is in contact with at least a portion of the inner wall of the scroll plate. The first outer ring is disposed around the outer periphery of the first inner ring, and the first outer ring and the first inner ring form a track on their respective sides. The balls are disposed within the track. The first inner ring can rotate with the second shaft 162, while the first outer ring remains stationary relative to the first inner ring to limit the rotation of the scroll plate. The lower bearing 164 consists of a second inner ring, a second outer ring, and balls. The second inner ring is fitted around at least a portion of the outer periphery of the first shaft 161, and the second outer ring is in contact with at least a portion of the inner wall of the frame. The second outer ring is disposed around the outer periphery of the second inner ring, and the first outer ring and the first inner ring form a track on their respective sides. The balls are disposed within the track. The second inner ring can rotate with the first shaft 161, while the second outer ring remains stationary relative to the second inner ring to limit the rotation of the scroll plate. According to some embodiments of the present invention, the upper bearing 163 is configured to be sleeved on the second shaft 162 and arranged sequentially in the axial direction; the lower bearing 164 is configured to be sleeved on the first shaft 161 and arranged sequentially in the axial direction.

[0041] In some specific embodiments, the anti-rotation mechanism 100 in the prior art typically uses a single upper bearing 163 and a single lower bearing 164 cooperating at both ends of the crankshaft. The contact stress of a single upper bearing 163 or a single lower bearing 164 is high, resulting in poor impact resistance, low lifespan under high-speed and heavy loads, low vibration damping capacity, and significant noise during operation. To solve these problems, in this application, the upper bearing 163 is constructed as two bearings sleeved on the second shaft 162 and arranged sequentially in the axial direction, and the lower bearing 164 is constructed as two bearings sleeved on the first shaft 161 and arranged sequentially in the axial direction. Both ends of the crankshaft are fitted with the paired upper bearing 163 or lower bearing 164. The parallel installation of the paired upper bearing 163 and lower bearing 164 allows them to share the load, improving the lifespan and stability of the anti-rotation mechanism 100, resulting in lower noise during scroll compressor operation, and also improving the working accuracy of the scroll compressor.

[0042] According to some embodiments of the present invention, at least one first inner ring and the second shaft 162 are integrally formed, and at least one second inner ring and the first shaft 161 are integrally formed.

[0043] The first inner ring of the upper bearing 163 can be integrally constructed with the second shaft 162, and the second inner ring of the lower bearing 164 can be integrally constructed with the first shaft 161. On the one hand, the first and second inner rings can be manufactured with the crankshaft using the same mold, reducing the number of molds, the number of parts to be manufactured in the anti-rotation mechanism 100, and the number of manufacturing steps, thereby improving the production efficiency of the anti-rotation mechanism 100 and reducing production costs. On the other hand, it improves the integration of the anti-rotation mechanism 100, making the assembly and disassembly of the anti-rotation mechanism 100 simpler, reducing the assembly error of the anti-rotation mechanism 100, thereby reducing the wear between the various parts in the anti-rotation mechanism 100 and improving the reliability of the anti-rotation mechanism 100.

[0044] According to some embodiments of the present invention, the vortex moving disk includes: a moving disk body 13 and a first fastening cover 14, wherein a second mounting space is formed on the moving disk body 13 and opens to one end; the first fastening cover 14 is fixed to the moving disk body 13 and closes the second mounting space, and the first fastening cover 14 abuts against the end face of the upper bearing 163.

[0045] In some specific embodiments, the scroll compressor consists of a scroll body 13 and a first fastening cover 14. The scroll body 13 has a second mounting space that extends and opens toward the lower bearing 164. The first fastening cover 14 is connected to the open end of the scroll body 13 and can close at least part of the opening of the second mounting space. The first fastening cover 14 also abuts against the end face of the first outer ring of the upper bearing 163, so that the first outer ring of the upper bearing 163 will not rotate relative to the first inner ring. On the other hand, during the rotation of the scroll body 13, the first fastening cover 14 can be used to prevent the upper bearing 163 from loosening or falling off due to inertial force and scroll force. At the same time, the first fastening cover 14 can provide stable support and fixation for the upper bearing 163, ensuring that the upper bearing 163 and the scroll body 13 always maintain the correct position and balance, thereby improving the safety and reliability of the scroll compressor during operation.

[0046] According to some embodiments of the present invention, the frame includes: a frame body 12 and a rear cover 15, wherein a first mounting space is formed in the frame body 12 and opens to one end; the rear cover 15 is disposed on the frame body 12 and closes the first mounting space, a first gap 101 is formed between the rear cover 15 and the first shaft 161, and the rear cover 15 abuts against the end of the lower bearing 164.

[0047] In some specific embodiments, the frame consists of a frame body 12 and a rear cover 15. A first mounting space is formed within the frame body 12. One end of the first mounting space is open towards the upper bearing 163, and the other end is open away from the lower bearing 164. The rear cover 15 is located at the open end of the frame body 12 away from the lower bearing 164, and the rear cover 15 can close the opening of the first mounting space away from the lower bearing 164. The first shaft 161 can close the opening of the first mounting space towards the upper bearing 163, so that the lower bearing 164 is in a sealed space to prevent dust and dirt from entering. The lower bearing 164 is kept clean and properly lubricated, extending its service life. A first gap 101 is formed between the rear cover 15 and the end face of the first shaft 161. Airflow can flow into the first gap 101 through the airflow channel 103 and then diffuse to the fourth heat dissipation gap 106, achieving cooling of the frame and the lower bearing 164. The rear cover 15 abuts against the end of the second outer ring of the lower bearing 164, providing stable support and fixation for the lower bearing 164, maintaining the normal position and balance of the lower bearing 164 and other components, and preventing it from shifting or shaking during operation.

[0048] According to some embodiments of the present invention, a groove is formed in the rear cover 15 that is recessed toward the first axis 161, and a first gap 101 is formed in the groove.

[0049] In some specific embodiments, the rear cover 15 has a groove formed at the end facing the first shaft 161. The outer periphery of the groove abuts against the end face of the second outer ring of the lower bearing 164. A first gap 101 is formed in the groove. Airflow flows into the first gap 101 through the airflow channel 103 from the second gap 102. Since the groove can seal the first mounting space, the airflow cannot flow out from the rear cover 15. At least part of the airflow diffuses into the fourth heat dissipation gap 106 and the second heat dissipation gap to achieve cooling of the frame and the lower bearing 164. At least another part of the airflow flows back into the second gap 102 through the airflow channel 103, further improving the cooling effect on the crankshaft.

[0050] The scroll compressor according to the present invention is briefly described below.

[0051] The scroll compressor according to the present invention is provided with an anti-rotation mechanism 100 as described in any of the above embodiments. Since the scroll compressor according to the present invention is provided with an anti-rotation mechanism 100 as described in any of the above embodiments, the anti-rotation mechanism 100 can be cooled when its temperature rises during operation, so that the temperature of the anti-rotation mechanism 100 is kept within a certain range, thereby improving the stability and reliability of the scroll compressor during operation.

[0052] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0053] In the description of this invention, "first feature" and "second feature" may include one or more of the features. In the description of this invention, "multiple" means two or more.

[0054] In the description of this invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0055] In the description of this invention, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0056] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example that are included in at least one embodiment or example of the present invention.

[0057] In this specification, the illustrative expressions of the terms used do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0058] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An anti-rotation mechanism for a scroll compressor, characterized in that, include: A housing (11) having an air inlet formed thereon; A frame is disposed within the housing (11), and a first installation space is formed within the frame; A vortex drive plate is disposed on the frame, a second mounting space is formed inside the vortex drive plate, and a cooling hole (104) is formed on the vortex drive plate to connect the second mounting space with the air inlet. A crankshaft is provided with a first shaft (161) and a second shaft (162). The first shaft (161) is housed in the first mounting space and cooperates with the frame. A first gap (101) is formed between the end of the first shaft (161) and the inner wall of the first mounting space. The second shaft (162) is housed in the second mounting space and cooperates with the scroll plate. A second gap (102) is formed between the end of the second shaft (162) and the inner wall of the second mounting space. An airflow channel (103) is formed inside the crankshaft to connect the first gap (101) and the second gap (102). Upper bearing (163) is disposed between the scroll disk and the crankshaft, and the upper bearing (163) is provided with a first heat dissipation gap communicating with the second gap (102); The lower bearing (164) is disposed between the frame and the crankshaft, and the lower bearing (164) is provided with a second heat dissipation gap communicating with the first gap (101); The upper bearing (163) is sleeved on the outer periphery of the second shaft (162), and the lower bearing (164) is sleeved on the outer periphery of the first shaft (161). The free ends of the first shaft (161) and the free ends of the second shaft (162) gradually decrease in diameter in the direction away from each other, so that a third heat dissipation gap (105) communicating with the second gap (102) is formed between the outer periphery of the upper bearing (163) and the second shaft (162), and a fourth heat dissipation gap (106) communicating with the first gap (101) is formed between the outer periphery of the lower bearing (164) and the first shaft (161).

2. The anti-rotation mechanism (100) for a scroll compressor according to claim 1, characterized in that, The upper bearing (163) includes: The first inner ring is fitted around the outer periphery of the second shaft (162); A first outer ring is disposed on the outer periphery of the first inner ring, and the first outer ring cooperates with the vortex disk. The lower bearing (164) includes: The second inner ring is fitted around the outer periphery of the first shaft (161); The second outer ring is disposed on the outer periphery of the second inner ring and cooperates with the frame.

3. The anti-rotation mechanism (100) for a scroll compressor according to claim 2, characterized in that, The upper bearing (163) is constructed as a plurality of bearings sleeved on the second shaft (162) and arranged sequentially in the axial direction; the lower bearing (164) is constructed as a plurality of bearings sleeved on the first shaft (161) and arranged sequentially in the axial direction.

4. The anti-rotation mechanism (100) for a scroll compressor according to claim 3, characterized in that, At least one of the first inner rings and the second shaft (162) are integrally formed, and at least one of the second inner rings and the first shaft (161) are integrally formed.

5. The anti-rotation mechanism (100) for a scroll compressor according to claim 1, characterized in that, The vortex drive includes: The moving disk body (13) has a second mounting space that opens to one end; The first fastening cover (14) is fixed to the moving plate body (13) and closes the second installation space. The first fastening cover (14) abuts against the end face of the upper bearing (163).

6. The anti-rotation mechanism (100) for a scroll compressor according to claim 1, characterized in that, The rack includes: The rack body (12) has a first mounting space that opens to one end. The rear cover (15) is disposed on the frame body (12) and closes the first installation space. The rear cover (15) and the first shaft (161) form the first gap (101). The rear cover (15) and the end of the lower bearing (164) abut against each other.

7. The anti-rotation mechanism (100) for a scroll compressor according to claim 6, characterized in that, The rear cover (15) plate has a recessed groove that is recessed away from the first axis (161), and the first gap (101) is formed in the groove.

8. A scroll compressor, characterized in that, Includes the anti-rotation mechanism (100) as described in any one of claims 1-7.

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