Stabilizer for rotation speed, compressor and refrigerator

Abstract

The application provides a rotating speed stabilizing device, a compressor and a refrigerator. The rotating speed stabilizing device comprises: a counterweight; a connecting piece for connecting with a rotor of the compressor, the connecting piece having a connecting state of being connected with the counterweight and a separation state of being separated from the counterweight, and the connecting piece is switchably arranged between the connecting state and the separation state. The rotating speed stabilizing device solves the problem of low rotating speed stability of the transmission assembly in the compressor in the prior art.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and more specifically, to a speed stabilizing device, a compressor, and a refrigerator. Background Technology

[0002] With rapid economic development, household refrigerators have become widely used. As environmental protection and energy conservation requirements increase, the requirements for compressors in refrigeration systems are becoming more stringent, and compressors are gradually developing towards wider frequency ranges, smaller size, and higher efficiency.

[0003] Currently, household refrigerators mainly use small reciprocating compressors, which have unbalanced reciprocating inertial forces. As the overall core, including the shaft system components, is miniaturized, its vibration will gradually increase, especially when operating at low frequencies. Even if the motor increases torque compensation, as the frequency decreases, the core's ability to bear intermittent loads decreases, and the speed stability becomes lower, causing the core to impact the casing, which seriously affects the customer experience and the compressor's lifespan. Summary of the Invention

[0004] The main objective of this invention is to provide a speed stabilization device, a compressor, and a refrigerator to solve the problem of low speed stability of the transmission components in the compressor in the prior art.

[0005] To achieve the above objectives, according to one aspect of the present invention, a speed stabilizing device is provided, comprising: a counterweight; and a connector for connecting to the rotor of a compressor, the connector having a connected state connected to the counterweight and a disconnected state separated from the counterweight, the connector being switchably configured between the connected state and the disconnected state.

[0006] Furthermore, the connecting member includes: a connecting portion; an elastic member, the first end of which is connected to the rotor, and the second end of which is connected to the connecting portion; the elastic member extends along the radial direction of the rotor; when the rotor speed is less than a preset speed, the connecting portion is connected to the counterweight under the action of the elastic member; when the rotor speed is greater than or equal to the preset speed, the connecting portion compresses the elastic member to move along the radial direction of the rotor away from the counterweight, so as to separate from the counterweight.

[0007] Furthermore, the connector also includes: a connecting body for connecting with the rotor, the connecting body having a mounting groove, at least a portion of the elastic element being disposed within the mounting groove, and a first end of the elastic element being connected to the connecting body.

[0008] Furthermore, the connecting part includes a first connecting part and a second connecting part connected to the first connecting part; the mounting groove includes a first groove body and a second groove body communicating with the first groove body; the second end of the elastic member is connected to the first end of the first connecting part, and both the elastic member and the first connecting part are movably disposed in the first groove body; the first end of the second connecting part is connected to the second end of the first connecting part, and the second connecting part passes through the second groove body so that when the connecting member is in the connected state, the second end of the second connecting part is connected to the counterweight.

[0009] Furthermore, the counterweight includes a counterweight body and a toothed disc connected to the counterweight body. Multiple connecting teeth of the toothed disc are spaced apart along the circumferential direction of the toothed disc to form multiple recesses. When the connector is in the connected state, at least a portion of the connecting part is inserted into the recess.

[0010] Furthermore, the connector is arranged around the gear disc and is used to be disposed between the counterweight body and the rotor. The connector includes multiple pairs of connected parts and elastic elements. Multiple connected parts are arranged in a one-to-one correspondence with multiple recessed parts. When the connector is in the connected state, at least a portion of the connected part is inserted into the corresponding recessed part.

[0011] Furthermore, the connecting tooth has a first tooth side surface and a second tooth side surface that are arranged opposite to each other along the circumferential direction of the tooth disk, and the connecting tooth has a tooth top surface; the first end of the tooth top surface is connected to the first end of the first tooth side surface by a rounded transition, the second end of the tooth top surface is connected to the second tooth side surface, and the second end of the first tooth side surface is connected to the bottom of the recess by a rounded transition; and / or, the second tooth side surface is a plane.

[0012] Furthermore, the counterweight body is a first annular structure, and the top of the counterweight body has a conical surface; the counterweight body is arranged around at least a portion of the compressor support and there is a flow gap between the two.

[0013] Furthermore, the speed stabilizing device also includes: a retaining ring for fixed connection with the compressor bracket; and a bearing assembly surrounding the retaining ring, the bearing assembly being disposed between the retaining ring and the counterweight.

[0014] According to another aspect of the present invention, a compressor is provided, including a rotor and a crankshaft assembly, the rotor being rotatably disposed to drive the crankshaft assembly to rotate, the compressor further including the aforementioned speed stabilizing device, the connecting member of the speed stabilizing device being connected to the rotor.

[0015] According to another aspect of the present invention, a refrigerator is provided, comprising the compressor described above.

[0016] The speed stabilizing device of the present invention includes a counterweight and a connector. The connector is used to connect to the rotor of the compressor. The connector has a connected state connected to the counterweight and a disconnected state separated from the counterweight. The connector can be switched between the connected state and the disconnected state. In this way, when the compressor is running at low frequency, the connector can be in the connected state. Since the counterweight has a large mass, it can store rotational kinetic energy and resist changes in rotor speed, effectively reducing the speed fluctuation of the rotor when rotating at low speed. This makes the rotational movement of the compressor's transmission components smoother and more stable, reduces vibration and noise of the compressor core, and improves the user experience. When the compressor is running at high frequency, the connector can be in the disconnected state. The counterweight does not rotate with the rotor, so it does not increase the power loss of the counterweight and ensures that the compressor's COP is not affected. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0018] Figure 1 A schematic diagram of the connecting member of the speed stabilizing device according to the present invention is shown;

[0019] Figure 2 An isometric view of the connecting member of the speed stabilizing device according to the present invention is shown;

[0020] Figure 3 A top-view perspective view of the counterweight component of the speed stabilizing device according to the present invention is shown;

[0021] Figure 4 An isometric view of the counterweight of the speed stabilizing device according to the present invention is shown from a bottom angle.

[0022] Figure 5 A cross-sectional view of an embodiment of the speed stabilizing device according to the present invention is shown;

[0023] Figure 6 A top-view cross-sectional view of an embodiment of the compressor according to the present invention is shown;

[0024] Figure 7 A cross-sectional view from the front view of an embodiment of the compressor according to the present invention is shown;

[0025] Figure 8 The invention is shown Figure 6 A magnified view of a portion of the image.

[0026] The above figures include the following reference numerals:

[0027] 10. Counterweight; 11. Counterweight body; 12. Gear disc; 13. Connecting tooth; 14. Recessed portion; 15. First tooth side face; 16. Second tooth side face; 17. Tooth tip; 18. Conical surface; 20. Connector; 21. Connecting part; 211. First connecting part; 212. Second connecting part; 22. Elastic element; 23. Connecting body; 24. Mounting groove; 241. First groove; 242. Second groove; 30. Rotor; 40. Bracket; 50. Retaining ring; 60. Bearing assembly; 70. Crankshaft assembly;

[0028] 1. Housing assembly; 2. Intake assembly; 3. Exhaust assembly; 4. Pump body assembly; 6. Compensation assembly; 7. Stator. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0031] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0032] This invention provides a speed stabilizing device; please refer to [the relevant documentation]. Figures 1 to 8 It includes: a counterweight 10; and a connector 20 for connecting to the rotor 30 of the compressor. The connector 20 has a connected state connected to the counterweight 10 and a disconnected state separated from the counterweight 10. The connector 20 can be switched between the connected state and the disconnected state.

[0033] The speed stabilizing device of the present invention includes a counterweight 10 and a connector 20. The connector 20 is used to connect to the rotor 30 of the compressor. The connector 20 has a connected state connected to the counterweight 10 and a disconnected state separated from the counterweight 10. The connector 20 can be switched between the connected state and the disconnected state. In this way, when the compressor is running at low frequency, the connector 20 can be in the connected state. Since the counterweight 10 has a large mass, it can store rotational kinetic energy and resist the change in the speed of the rotor 30, effectively reducing the speed fluctuation of the rotor 30 when rotating at low speed. This makes the rotational movement of the compressor's transmission components smoother and more stable, reduces the vibration and noise of the compressor core, and improves the user experience. When the compressor is running at high frequency, the connector 20 can be in the disconnected state. The counterweight 10 does not rotate with the rotor 30, so the power loss of the counterweight 10 is not increased, ensuring that the compressor COP is not affected.

[0034] It should be noted that the transmission components include moving structures such as the rotor 30 and the crankshaft assembly 70.

[0035] In this embodiment, as Figure 1 As shown, the connector 20 includes: a connecting portion 21; an elastic member 22, the first end of which is connected to the rotor 30, and the second end of which is connected to the connecting portion 21; the elastic member 22 extends in the radial direction of the rotor 30; when the rotational speed of the rotor 30 is less than a preset rotational speed, the connecting portion 21 is connected to the counterweight 10 under the action of the elastic member 22; when the rotational speed of the rotor 30 is greater than or equal to the preset rotational speed, the connecting portion 21 compresses the elastic member 22 to move in the radial direction of the rotor 30 away from the counterweight 10, so as to separate from the counterweight 10.

[0036] In practical implementation, the connecting part 21 serves to connect the rotor 30 and the counterweight 10. The elastic element 22 allows the connecting part 20 to switch between connected and disconnected states. When the rotor 30's speed is less than the preset speed, that is, during compressor startup or low-frequency operation, the elastic force of the elastic element 22 causes the connecting part 21 to extend and contact the counterweight 10. The counterweight 10 rotates with the connecting part 20 and the rotor 30, acting as a flywheel to store rotational kinetic energy, which helps resist changes in the rotor 30's speed. Thus, when the compressor piston moves against the transmission components... When used with a variable torque or applied to intermittent loads, it can effectively reduce the fluctuation of the transmission components, make the rotational motion smoother, reduce the vibration and noise of the core, and improve the user experience. When the speed of the rotor 30 is greater than or equal to the preset speed, that is, when the compressor is working at high frequency, under the centrifugal force, the connecting part 21 compresses the elastic element 22, the elastic element 22 contracts, the connecting part 21 separates from the counterweight 10, and the counterweight 10 does not rotate with the rotor 30, ensuring that the rotor 30 drives a small load when the speed is high, without increasing power loss, and ensuring that the compressor's COP is not affected.

[0037] Specifically, COP (Coefficient of Performance) refers to the ratio of the compressor's cooling capacity to its input power. The higher the COP value, the higher the compressor's efficiency.

[0038] Specifically, the elastic element 22 is a spring, but it can also be other types of elastic elements.

[0039] In this embodiment, as Figure 1 As shown, the connector 20 further includes a connector body 23 for connecting to the rotor 30. The connector body 23 is provided with a mounting groove 24. At least a portion of the elastic member 22 is disposed in the mounting groove 24. The first end of the elastic member 22 is connected to the connector body 23.

[0040] In practice, the connecting body 23 connects the elastic element 22, the connecting part 21, and the rotor 30. The mounting groove 24 is provided on the connecting body 23 to accommodate the elastic element 22 and prevent it from falling off during the rotation of the connecting part 20. When the compressor operates at high frequency, the connecting part 21 retracts into the mounting groove 24 under centrifugal force.

[0041] Specifically, the connecting body 23 is a second annular structure. The outer diameter of the second annular structure is the same as the outer diameter of the rotor 30, or the outer diameter of the second annular structure is smaller than the outer diameter of the rotor 30. This arrangement avoids interference between the connecting body 23 and the stator 7 of the compressor.

[0042] Optionally, the connecting body 23 is connected to the rotor 30 by adhesive bonding; or, the connecting body 23 is provided with a plurality of screw holes evenly distributed in its circumferential direction, and the connecting body 23 is fixedly connected to the rotor 30 by screws inserted into the plurality of screw holes and the rotor 30.

[0043] In this embodiment, as Figure 1 and Figure 2 As shown, the connecting part 21 includes a first connecting part 211 and a second connecting part 212 connected to the first connecting part 211; the mounting groove 24 includes a first groove 241 and a second groove 242 connected to the first groove 241; the second end of the elastic member 22 is connected to the first end of the first connecting part 211, and both the elastic member 22 and the first connecting part 211 are movably disposed in the first groove 241; the first end of the second connecting part 212 is connected to the second end of the first connecting part 211, and the second connecting part 212 passes through the second groove 242 so that when the connecting member 20 is in the connected state, the second end of the second connecting part 212 is connected to the counterweight 10. The connecting part 21 is T-shaped, the first connecting part 211 is the horizontal part of the T-shape, the second connecting part 212 is the vertical part of the T-shape, the first groove 241 and the second groove 242 are both grooves of equal width, the width of the first groove 241 is greater than the width of the second groove 242, and the width direction of the first groove 241 and the second groove 242 is the circumferential direction of the connecting body 23.

[0044] In specific implementation, when the connector 20 is in the connected state, part of the structure of the second connecting part 212 is located in the second groove 242, and the rest extends out of the second groove 242 to connect with the counterweight 10. Since the width of the second groove 242 is smaller than the width of the first groove 241, the first connecting part 211 cannot enter the second groove 242, thus preventing the connecting part 21 from extending out of the mounting groove 24 as a whole, thereby limiting the connecting part 21 and ensuring that the connecting part 21 moves reliably in the radial direction of the connector 20.

[0045] In this embodiment, as Figure 3 As shown, the counterweight 10 includes a counterweight body 11 and a toothed disc 12 connected to the counterweight body 11. A plurality of connecting teeth 13 of the toothed disc 12 are spaced apart along the circumferential direction of the toothed disc 12 to form a plurality of recesses 14. When the connector 20 is in the connected state, at least a portion of the connecting portion 21 is inserted into the recesses 14.

[0046] In a specific implementation, when at least a portion of the connecting part 21 is inserted into the recessed part 14, the connecting part 21 meshes with the gear disk 12, so that the rotor 30 can drive the counterweight 10 to rotate together when it rotates.

[0047] Specifically, the outer diameter of the toothed disc 12 is smaller than the inner diameter of the connecting body 23, and the thickness of the toothed disc 12 is greater than the thickness of the connecting body 23. This arrangement avoids interference between the counterweight 10 and the connecting body 23.

[0048] In this embodiment, the connector 20 is arranged around the gear disk 12 and is used to be disposed between the counterweight body 11 and the rotor 30. The connector 20 includes multiple pairs of paired connecting portions 21 and elastic members 22. The multiple connecting portions 21 are arranged one-to-one with multiple recesses 14. When the connector 20 is in the connected state, at least a portion of the connecting portion 21 is inserted into the corresponding recess 14. This arrangement increases the tightness of the connection between the connector 20 and the counterweight 10, and prevents the two from separating during the rotation of the counterweight 10 driven by the connector 20.

[0049] Specifically, the connecting body 23 is provided with a plurality of mounting slots 24, and the plurality of mounting slots 24 are provided in a one-to-one correspondence with a plurality of connecting parts 21, and at least a portion of each connecting part 21 is used to be disposed in the corresponding mounting slot 24.

[0050] In this embodiment, as Figure 3 As shown, the connecting tooth portion 13 has a first tooth side surface 15 and a second tooth side surface 16 disposed opposite to each other along the circumferential direction of the tooth disk 12, and the connecting tooth portion 13 has a tooth top surface 17; the first end of the tooth top surface 17 is connected to the first end of the first tooth side surface 15 by a rounded transition, the second end of the tooth top surface 17 is connected to the second tooth side surface 16, the second end of the first tooth side surface 15 is connected to the bottom of the recess 14 by a rounded transition; and / or, the second tooth side surface 16 is a plane.

[0051] In specific implementation, the planar design of the second tooth side surface 16 facilitates the engagement of the connecting tooth 13 with the protruding second connecting part 212, and facilitates the meshing of the second connecting part 212 with the connecting tooth 13; the first tooth side surface 15, the tooth top surface 17, and the bottom of the recessed part 14 are all connected by a rounded transition, which facilitates the separation of the second connecting part 212 from the connecting tooth 13.

[0052] In this embodiment, as Figure 3 As shown, the counterweight body 11 has a first annular structure, and the top of the counterweight body 11 has a conical surface 18. The counterweight body 11 is arranged around at least a portion of the compressor support 40, and there is a flow gap between the two. The conical surface 18 allows the internal lubricating oil of the compressor to flow downward from the conical surface 18 to the flow gap, then to the bearing assembly 60, and then to the gear disk 12, thus providing lubrication to both the bearing assembly 60 and the gear disk 12.

[0053] Specifically, the diameter of the first annular structure is less than or equal to the diameter of the rotor, which avoids interference between the counterweight and the stator 7.

[0054] In this embodiment, as Figure 5 As shown, the speed stabilizing device also includes: a retaining ring 50 for fixed connection with the compressor bracket 40; and a bearing assembly 60, which surrounds the retaining ring 50 and is positioned between the retaining ring 50 and the counterweight 10. The bearing assembly 60 ensures the smooth rotation of the counterweight 10. The bearing assembly 60 is a tapered roller bearing.

[0055] In other embodiments, the bearing assembly 60 is a deep groove ball bearing or a cylindrical roller bearing.

[0056] Specifically, the center line of the counterweight 10 is its axis of rotation, the center line of the connector 20 is its axis of rotation, and the rotor 30 rotates around its axis. The center lines of the counterweight 10 and the connector 20 are both coincident with the axis of the rotor 30.

[0057] The speed stabilizing device of this application improves the stability of the compressor speed during low-frequency operation by using the increased mass (i.e., counterweight), reduces compressor vibration and noise, and increases compressor service life; at the same time, it does not increase the frictional power consumption during high-frequency operation, ensuring that the COP of the compressor is not affected when it operates at high frequency.

[0058] The present invention also provides a compressor, please refer to... Figures 6 to 8 The compressor includes a rotor 30 and a crankshaft assembly 70. The rotor 30 is rotatably configured to drive the crankshaft assembly 70 to rotate. The compressor also includes the speed stabilizing device in the above embodiment, and the connecting member 20 of the speed stabilizing device is connected to the rotor 30.

[0059] Specifically, the counterweight 10 and the connector 20 are both arranged around the crankshaft assembly 70; the compressor also includes a bracket 40, and the counterweight 10 and the connector 20 are both arranged around the bracket 40.

[0060] Specifically, the compressor is composed of components such as housing assembly 1, intake assembly 2, exhaust assembly 3, pump body assembly 4, compensation assembly 6, stator 7, rotor 30, bracket 40, and crankshaft assembly 70.

[0061] The present invention also provides a refrigerator, including the compressor described in the above embodiments.

[0062] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0063] The speed stabilizing device of the present invention includes a counterweight 10 and a connector 20. The connector 20 is used to connect to the rotor 30 of the compressor. The connector 20 has a connected state connected to the counterweight 10 and a disconnected state separated from the counterweight 10. The connector 20 can be switched between the connected state and the disconnected state. In this way, when the compressor is running at low frequency, the connector 20 can be in the connected state. Since the counterweight 10 has a large mass, it can store rotational kinetic energy and resist the change in the speed of the rotor 30, effectively reducing the speed fluctuation of the rotor 30 when rotating at low speed. This makes the rotational movement of the compressor's transmission components smoother and more stable, reduces the vibration and noise of the compressor core, and improves the user experience. When the compressor is running at high frequency, the connector 20 can be in the disconnected state. The counterweight 10 does not rotate with the rotor 30, so the power loss of the counterweight 10 is not increased, ensuring that the compressor COP is not affected.

[0064] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0065] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0066] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A speed stabilizing device, characterized in that, include: Counterweight (10); A connector (20) for connecting to the rotor (30) of the compressor, the connector (20) having a connected state connected to the counterweight (10) and a separated state separated from the counterweight (10), the connector (20) being switchable between the connected state and the separated state; The connector (20) includes: Connecting part (21); An elastic element (22) has a first end for connection to the rotor (30) and a second end for connection to the connecting portion (21); the elastic element (22) extends in the radial direction of the rotor (30); A connecting body (23) is provided for connecting to the rotor (30). The connecting body (23) is provided with a mounting groove (24). At least a portion of the elastic element (22) is disposed in the mounting groove (24). The first end of the elastic element (22) is connected to the connecting body (23). The connecting part (21) includes a first connecting part (211) and a second connecting part (212) connected to the first connecting part (211); the mounting groove (24) includes a first groove (241) and a second groove (242) connected to the first groove (241); the second end of the elastic member (22) is connected to the first end of the first connecting part (211), and both the elastic member (22) and the first connecting part (211) are movably disposed in the first groove (241); the first end of the second connecting part (212) is connected to the second end of the first connecting part (211), and the second connecting part (212) passes through the second groove (242) so that when the connecting member (20) is in the connected state, the second end of the second connecting part (212) is connected to the counterweight (10); The counterweight (10) includes a counterweight body (11), which is a first annular structure. The top of the counterweight body (11) has a conical surface (18). The counterweight body (11) is arranged around at least a portion of the support (40) of the compressor and there is a flow gap between them. The diameter of the first annular structure is less than or equal to the diameter of the rotor. The speed stabilizing device further includes: A retaining ring (50) is used for fixed connection with the support (40) of the compressor; A bearing assembly (60) is disposed around the retaining ring (50) and between the retaining ring (50) and the counterweight (10); The connecting body (23) is a second annular structure, and the outer diameter of the connecting body (23) is less than or equal to the outer diameter of the rotor (30).

2. The speed stabilizing device according to claim 1, characterized in that, When the rotational speed of the rotor (30) is less than the preset rotational speed, the connecting part (21) is connected to the counterweight (10) under the action of the elastic member (22); when the rotational speed of the rotor (30) is greater than or equal to the preset rotational speed, the connecting part (21) compresses the elastic member (22) to move in the radial direction of the rotor (30) away from the counterweight (10) to separate from the counterweight (10).

3. The speed stabilizing device according to claim 2, characterized in that, The counterweight (10) includes a toothed disc (12) connected to the counterweight body (11), and a plurality of connecting teeth (13) of the toothed disc (12) are spaced apart along the circumferential direction of the toothed disc (12) to form a plurality of recesses (14). When the connector (20) is in the connected state, at least a portion of the connecting part (21) is inserted into the recess (14).

4. The speed stabilizing device according to claim 3, characterized in that, The connector (20) is arranged around the gear disc (12) and is used to be disposed between the counterweight body (11) and the rotor (30). The connector (20) includes multiple pairs of connected parts (21) and elastic members (22) arranged in pairs. Multiple connected parts (21) are arranged in a one-to-one correspondence with multiple recesses (14). When the connector (20) is in the connected state, at least a portion of the connected part (21) is inserted into the corresponding recess (14).

5. The speed stabilizing device according to claim 3, characterized in that, The connecting tooth (13) has a first tooth surface (15) and a second tooth surface (16) disposed opposite to each other along the circumferential direction of the toothed disk (12), and the connecting tooth (13) has a tooth tip surface (17). The first end of the tooth top surface (17) is connected to the first end of the first tooth side surface (15) by a circular arc transition, the second end of the tooth top surface (17) is connected to the second tooth side surface (16), the second end of the first tooth side surface (15) is connected to the bottom of the recess (14) by a circular arc transition; and / or, the second tooth side surface (16) is a plane.

6. A compressor comprising a rotor (30) and a crankshaft assembly (70), the rotor (30) being rotatably configured to drive the crankshaft assembly (70) to rotate, characterized in that, The compressor further includes a speed stabilizing device according to any one of claims 1 to 5, wherein the connecting part (20) of the speed stabilizing device is connected to the rotor (30).

7. A refrigerator, characterized in that, Includes the compressor described in claim 6.

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