Scroll compressor and electrical appliance having the same

Abstract

The present application provides a scroll compressor and an electrical appliance having the same, including a first compression structure, a second compression structure and a balancing device. The first compression structure includes a first movable scroll, which rotates around the central axis of the first movable scroll; the second compression structure includes a second movable scroll, which rotates around the central axis of the second movable scroll; the first movable scroll and the second movable scroll are meshed with each other to form a compression chamber; the balancing device is used to provide a balancing force, which is used to balance the eccentric force generated in the compression chamber during the compression process; according to the scroll compressor of the present application and the electrical appliance having the same, the eccentric force of the compression process is balanced in force and torque, thereby solving the problem of unbalanced force on the shaft system caused by the eccentric force.

Description

Technical Field

[0001] The present application belongs to the technical field of compressors, and in particular relates to a scroll compressor and an electrical appliance having the same. Background Art

[0002] At present, scroll compressors can be divided into two types: orbital type and rotary type according to the different movement modes of their two scrolls. An orbital type scroll compressor is defined as a stationary scroll with one scroll fixed and the other scroll orbiting around the stationary scroll. A rotary type scroll compressor is defined as two scrolls rotating synchronously and in the same direction around their own rotation axis. The two scrolls are movable scrolls with exactly the same geometric parameters, and the two are arranged 180° apart with a certain eccentricity. The movable scroll of the orbital type scroll compressor orbits eccentrically with the crankshaft, and the centrifugal force balance and centrifugal torque balance of the eccentric part need to be considered during operation. The eccentric force is divided into radial eccentric force along the direction of the line connecting the center of the base circle of the movable and stationary scrolls and tangential eccentric force perpendicular to it. The directions of the two forces rotate synchronously with the crankshaft, causing the overturning and self-rotation problems of the movable scroll. Since the crankshaft of the rotary type scroll compressor has no eccentricity, there is no need to consider the centrifugal force balance and centrifugal torque balance.

[0003] However, the eccentric force of the rotary scroll compressor is divided into radial eccentric force along the direction of the line connecting the centers of the two scroll base circles and tangential eccentric force perpendicular to it. Since the rotation axes of the two scrolls are fixed, the position and direction of the eccentric force in space remain unchanged. The eccentric force causes the crankshaft to bear local load in a fixed direction and causes the shaft system to overturn.

[0004] Therefore, how to provide a scroll compressor and electrical appliances having the same that can balance the force and torque of the eccentric force during the compression process, solve the imbalance of shaft force caused by the eccentric force, reduce the local load on the crankshaft in a fixed direction, and reduce the probability of overturning of the shaft has become an urgent problem that technical personnel in this field need to solve. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present application is to provide a scroll compressor and an electrical appliance having the same, which can balance the force and torque of the eccentric force in the compression process, solve the imbalance of the shaft force caused by the eccentric force, reduce the local load on the crankshaft in a fixed direction, and reduce the probability of overturning of the shaft.

[0006] In order to solve the above problems, the present application provides a scroll compressor, comprising:

[0007] A first compression structure, the first compression structure includes a first movable scroll, and the first movable scroll rotates around the central axis of the first movable scroll;

[0008] A second compression structure, the second compression structure includes a second movable scroll, the second movable scroll rotates around the central axis of the second movable scroll; the first movable scroll and the second movable scroll are meshed with each other to form a compression chamber;

[0009] The balancing device is used to provide a balancing force, and the balancing force is used to balance the eccentric force generated by the compression chamber during the compression process.

[0010] Preferably, on the cross section of the compression chamber, the direction of the line connecting the central axis of the first movable scroll and the central axis of the second movable scroll is the first direction;

[0011] The balancing device comprises a first balancing device; the balancing force comprises a first balancing force; the first balancing device is used to provide a first balancing force, and the first balancing force is used to balance a first eccentric force in a first direction;

[0012] And / or, the balancing device includes a second balancing device; the balancing force includes a second balancing force; on the cross section of the compression chamber, the direction perpendicular to the first direction is the second direction; the second balancing device is used to provide a second balancing force, and the second balancing force is used to balance the second eccentric force in the second direction.

[0013] Preferably, the resultant force of the first balancing force and the first eccentric force is zero;

[0014] and / or, the resultant force of the second balancing force and the second eccentric force is zero;

[0015] and / or, the resultant moment of the first balancing force and the first eccentric force is zero;

[0016] And / or, the resultant moment of the second balancing force and the second eccentric force is zero.

[0017] Preferably, the scroll compressor comprises a compressor housing; the first balancing device is arranged on the compressor housing; and / or the second balancing device is arranged on the compressor housing.

[0018] Preferably, the first compression structure further comprises a first driving shaft, and the first movable scroll is arranged at a first end of the first driving shaft;

[0019] And / or, the second compression structure further includes a second driving shaft, and the second movable scroll is disposed at a first end of the second driving shaft.

[0020] Preferably, the first balancing device comprises a first balancing portion; the first balancing portion corresponds to the position of the first compression structure in the axial direction of the first drive shaft; the first balancing portion is used to provide a first balancing force to the first compression structure;

[0021] And / or, the second balancing device comprises a second balancing portion; the second balancing portion corresponds to the position of the first compression structure in the axial direction of the first drive shaft; the second balancing portion is used to provide a second balancing force to the first compression structure;

[0022] And / or, the first balancing device includes a third balancing portion; the third balancing portion corresponds to the position of the second compression structure in the axial direction of the second drive shaft; the third balancing portion is used to provide a first balancing force to the second compression structure;

[0023] And / or, the second balancing device includes a fourth balancing part; the fourth balancing part corresponds to the position of the second compression structure in the axial direction of the second drive shaft; the fourth balancing part is used to provide a second balancing force to the second compression structure.

[0024] Preferably, the first balancing part includes a first balancing member and a second balancing member; the balancing forces provided by the first balancing member and the second balancing member are in opposite directions;

[0025] And / or, the second balancing part includes a third balancing member and a fourth balancing member; the balancing forces provided by the third balancing member and the fourth balancing member are in opposite directions;

[0026] And / or, the third balancing part includes a fifth balancing member and a sixth balancing member; the balancing forces provided by the fifth balancing member and the sixth balancing member are in opposite directions;

[0027] And / or, the fourth balancing part includes a seventh balancing piece and an eighth balancing piece; the balancing forces provided by the seventh balancing piece and the eighth balancing piece are in opposite directions.

[0028] Preferably, the distance between the first balancing member and the first movable scroll in the axial direction is d1; the distance between the second balancing member and the first movable scroll in the axial direction is d2; wherein d1≠d2;

[0029] And / or, the distance between the third balance member and the first movable scroll in the axial direction is d3; the distance between the fourth balance member and the first movable scroll in the axial direction is d4; wherein d3≠d4;

[0030] And / or, the distance between the fifth balance member and the second movable scroll in the axial direction is d5; the distance between the sixth balance member and the second movable scroll in the axial direction is d6; wherein d5≠d6;

[0031] And / or, the axial distance between the seventh balance member and the second movable scroll is d7; the axial distance between the eighth balance member and the second movable scroll is d8; wherein d7≠d8.

[0032] Preferably, d1>d2; and / or d3>d4; and / or d5>d6; and / or d7>d8.

[0033] Preferably, the eccentric force received by the first compression structure in the first direction is the positive first eccentric force; the eccentric force received by the second compression structure in the first direction is the negative first eccentric force; the eccentric force received by the first compression structure in the second direction is the positive second eccentric force; the eccentric force received by the second compression structure in the second direction is the negative second eccentric force;

[0034] The first balancing member is used to provide a first balancing force in the same direction; the first balancing force in the same direction is in the same direction as the first positive eccentric force;

[0035] And / or, the second balancing member is used to provide a reverse first balancing force; the reverse first balancing force is opposite to the positive first eccentric force;

[0036] And / or, the third balancing member is used to provide a second balancing force in the same direction, and the second balancing force in the same direction is in the same direction as the positive second eccentric force;

[0037] And / or, the fourth balancing member is used to provide a reverse second balancing force; the reverse second balancing force is opposite to the direction of the forward second eccentric force;

[0038] And / or, the fifth balancing member is used to provide a third balancing force in the same direction; the third balancing force in the same direction is in the same direction as the first eccentric force in the opposite direction;

[0039] And / or, the sixth balancing member is used to provide a reverse third balancing force; the reverse third balancing force is opposite to the reverse first eccentric force;

[0040] And / or, the seventh balancing member is used to provide a fourth balancing force in the same direction; the fourth balancing force in the same direction is in the same direction as the second eccentric force in the opposite direction;

[0041] And / or, the eighth balancing member is used to provide a reverse fourth balancing force; the reverse fourth balancing force is opposite to the reverse second eccentric force.

[0042] Preferably, the magnitude of the first balancing force is adjustable;

[0043] and / or, the magnitude of the second balancing force is adjustable;

[0044] and / or, the number of the first balancing parts is set to at least two;

[0045] and / or, the number of the second balancing parts is set to at least two;

[0046] and / or, the number of the third balancing parts is set to at least two;

[0047] And / or, the number of the fourth balancing parts is set to at least two.

[0048] Preferably, the first drive shaft is made of iron; and / or the second drive shaft is made of iron.

[0049] Preferably, the balancing member is an electromagnetic device.

[0050] According to another aspect of the present application, an electrical appliance is provided, including a scroll compressor, wherein the scroll compressor is the scroll compressor described above.

[0051] The scroll compressor provided in the present application balances the force and torque of the eccentric force during the compression process, solves the problem of unbalanced force on the shaft system caused by the eccentric force, reduces the local load on the crankshaft in a fixed direction, and reduces the probability of overturning of the shaft system. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 is a cross-sectional view of a scroll compressor according to an embodiment of the present application;

[0053] Figure 2 A schematic diagram of the structure of a scroll compressor according to an embodiment of the present application;

[0054] Figure 3 The first balancing force of the embodiment of the present application under fixed operating conditions varies with the rotation angle;

[0055] Figure 4 The second balancing force of the embodiment of the present application under fixed operating conditions varies with the rotation angle;

[0056] Figure 5 This is an axial distribution diagram of the balancing force of an embodiment of the present application;

[0057] Figure 6 This is a circumferential distribution diagram of the balancing force of an embodiment of the present application;

[0058] Figure 7 This is a schematic diagram of the eccentric force of the scroll when the main shaft is at 0° in an embodiment of the present application;

[0059] Figure 8 This is a schematic diagram of the eccentric force of the scroll when the main shaft of the embodiment of the present application rotates 90° counterclockwise;

[0060] Fig. 9 This is a schematic diagram of the eccentric force of the scroll when the main shaft of the embodiment of the present application rotates 180° counterclockwise;

[0061] Fig.10 This is a schematic diagram of the eccentric force of the scroll when the main shaft of the embodiment of the present application rotates 270° counterclockwise.

[0062] The reference numerals are:

[0063] 1. First movable scroll; 2. Second movable scroll; 3. First drive shaft; 4. Second drive shaft; 5. First balancing device; 6. Drive motor; 7. Drive main shaft; 8. First driving gear; 9. Second driving gear; 10. Support structure; 11. First driven gear; 12. Second driven gear. DETAILED DESCRIPTION

[0064] See also Figure 1-2As shown, according to an embodiment of the present application, a scroll compressor comprises: a first compression structure, a second compression structure and a balancing device, wherein the first compression structure comprises a first movable scroll 1, and the first movable scroll 1 rotates around the central axis of the first movable scroll 1; the second compression structure comprises a second movable scroll 2, and the second movable scroll 2 rotates around the central axis of the two movable scrolls; the first movable scroll 1 and the second movable scroll 2 mesh with each other to form a compression chamber; the balancing device is used to provide a balancing force, and the balancing force is used to balance the eccentric force generated in the compression chamber during the compression process. The eccentric force in the compression process is balanced in force and moment, so as to solve the imbalance of the shaft system caused by the eccentric force, reduce the local load on the crankshaft in a fixed direction, and reduce the overturning probability of the shaft system; it can solve the local load on the crankshaft caused by the imbalance of the gas force of the rotary scroll compressor; prevent the overturning of the shaft system caused by the imbalance of the gas force of the rotary scroll compressor; prevent the deformation of the crankshaft caused by the imbalance of the gas force of the rotary scroll compressor; and make the shaft system load uniform. In the rotary scroll compressor, the driving motor 6 drives the driving main shaft 7 to rotate, so that the first driving gear 8 and the second driving gear 9 are driven to rotate, and then the first driven gear 11 and the second driven gear 12 are driven to rotate, and the second driven gear 12 rotates to drive the second movable scroll 2 to rotate, and the first driven gear 11 rotates to drive the first movable scroll 1 to rotate.

[0065] See also Figure 7-10 The first eccentric force and the second eccentric force appearing at different angles of the rotary scroll compressor.

[0066] On the cross section of the compression chamber, the direction of the line connecting the central axis of the first movable scroll 1 and the central axis of the second movable scroll 2 is the first direction;

[0067] The scroll compressor further includes a first balancing device 5, and the balancing force includes a first balancing force; the first balancing device 5 is used to provide a first balancing force, and the first balancing force is used to balance a first eccentric force in a first direction;

[0068] The scroll compressor also includes a second balancing device; the balancing force includes a second balancing force; on the cross section of the compression chamber, the direction perpendicular to the first direction is the second direction; the second balancing device is used to provide a second balancing force, and the second balancing force is used to balance the second eccentric force in the second direction.

[0069] Further, the resultant force of the first balancing force and the first eccentric force is zero;

[0070] and / or, the resultant force of the second balancing force and the second eccentric force is zero;

[0071] and / or, the resultant moment of the first balancing force and the first eccentric force is zero;

[0072] And / or, the resultant moment of the second balancing force and the second eccentric force is zero.

[0073] Further, the scroll compressor comprises a compressor housing; a first balancing device 5 is arranged on the compressor housing; and / or a second balancing device is arranged on the compressor housing.

[0074] Furthermore, the first compression structure further includes a first drive shaft 3, and the first movable scroll 1 is arranged at a first end of the first drive shaft 3;

[0075] And / or, the first compression structure further includes a second driving shaft 4 , and the second movable scroll 2 is disposed at a first end of the second driving shaft 4 .

[0076] Furthermore, the first balancing device 5 includes a first balancing portion; the first balancing portion corresponds to the position of the first compression structure in the axial direction of the first drive shaft 3; the first balancing portion is used to provide a first balancing force to the first compression structure;

[0077] And / or, the second balancing device includes a second balancing portion; the second balancing portion corresponds to the position of the first compression structure in the axial direction of the first drive shaft 3; the second balancing portion is used to provide a second balancing force to the first compression structure;

[0078] And / or, the first balancing device 5 includes a third balancing portion; the third balancing portion corresponds to the position of the second compression structure in the axial direction of the second drive shaft 4; the third balancing portion is used to provide a first balancing force to the second compression structure;

[0079] And / or, the second balancing device includes a fourth balancing part; the fourth balancing part corresponds to the position of the second compression structure in the axial direction of the second drive shaft 4; the fourth balancing part is used to provide a second balancing force to the second compression structure.

[0080] See also Figure 5-6 As shown, the first balancing part includes a first balancing member and a second balancing member; the directions of the balancing forces provided by the first balancing member and the second balancing member are opposite;

[0081] And / or, the second balancing part includes a third balancing member and a fourth balancing member; the balancing forces provided by the third balancing member and the fourth balancing member are in opposite directions;

[0082] And / or, the third balancing part includes a fifth balancing member and a sixth balancing member; the directions of the balancing forces provided by the fifth balancing member and the sixth balancing member are opposite;

[0083] And / or, the fourth balancing part includes a seventh balancing piece and an eighth balancing piece; the balancing forces provided by the seventh balancing piece and the eighth balancing piece are in opposite directions.

[0084] Further, the distance between the first balancing member and the first movable scroll 1 in the axial direction is d1; the distance between the second balancing member and the first movable scroll 1 in the axial direction is d2; wherein d1≠d2;

[0085] And / or, the distance between the third balance member and the first movable scroll 1 in the axial direction is d3; the distance between the fourth balance member and the first movable scroll 1 in the axial direction is d4; wherein d3≠d4;

[0086] And / or, the distance between the fifth balance member and the second movable scroll 2 in the axial direction is d5; the distance between the sixth balance member and the second movable scroll 2 in the axial direction is d6; wherein d5≠d6;

[0087] And / or, the axial distance between the seventh balance member and the second movable scroll 2 is d7; the axial distance between the eighth balance member and the second movable scroll 2 is d8; wherein d7≠d8.

[0088] Further, d1>d2; and / or, d3>d4; and / or, d5>d6; and / or, d7>d8.

[0089] Further, the eccentric force received by the first compression structure in the first direction is the positive first eccentric force; the eccentric force received by the second compression structure in the first direction is the negative first eccentric force; the eccentric force received by the first compression structure in the second direction is the positive second eccentric force; the eccentric force received by the second compression structure in the second direction is the negative second eccentric force; the negative first eccentric force is equal to the positive first eccentric force in magnitude and opposite in direction, and the negative second eccentric force is equal to the positive second eccentric force in magnitude and opposite in direction;

[0090] The first balancing member is used to provide a first balancing force in the same direction; the first balancing force in the same direction is in the same direction as the first positive eccentric force;

[0091] And / or, the second balancing member is used to provide a reverse first balancing force; the reverse first balancing force is opposite to the positive first eccentric force;

[0092] And / or, the third balancing member is used to provide a second balancing force in the same direction, and the second balancing force in the same direction is in the same direction as the positive second eccentric force;

[0093] And / or, the fourth balancing member is used to provide a reverse second balancing force; the reverse second balancing force is opposite to the direction of the forward second eccentric force;

[0094] And / or, the fifth balancing member is used to provide a third balancing force in the same direction; the third balancing force in the same direction is in the same direction as the first eccentric force in the opposite direction;

[0095] And / or, the sixth balancing member is used to provide a reverse third balancing force; the reverse third balancing force is opposite to the reverse first eccentric force;

[0096] And / or, the seventh balancing member is used to provide a fourth balancing force in the same direction; the fourth balancing force in the same direction is in the same direction as the second eccentric force in the opposite direction;

[0097] And / or, the eighth balancing member is used to provide a reverse fourth balancing force; the reverse fourth balancing force is opposite to the reverse second eccentric force.

[0098]

[0099] Fr——first eccentric force

[0100] Fr1——Reverse first balancing force

[0101] Fr2——The first balancing force in the same direction

[0102] L0——The distance between the first eccentric force and the reference plane

[0103] L1——The distance between the first balance force in the opposite direction and the reference plane

[0104] L2——The distance between the first balancing force in the same direction and the reference plane

[0105] Note: The reference plane is any plane.

[0106]

[0107] ps——inspiratory pressure

[0108] h——height of vortex

[0109] a——base circle radius

[0110] ε——Compression ratio, from the center to the outside, it is the first chamber, the second chamber, etc., ε1 is the ratio of the first chamber pressure to the suction pressure, εi is the ratio of the i-th chamber pressure to the suction pressure

[0111]

[0112] Ft——Second eccentric force

[0113] Ft1——reverse second eccentric force

[0114] Ft2——Second balancing force in the same direction

[0115] P——Scroll pitch

[0116] θ——crankshaft angle

[0117] According to the force analysis of the scroll compression chamber, for a scroll disk with n compression chambers, its tangential and first eccentric forces can be expressed as:

[0118]

[0119] F r = 2p s ah(ε 1 -1)

[0120] The compression ratio ε is related to the working conditions. Under certain working conditions, the magnitude of the second eccentric force is related to the main shaft rotation angle θ, and the magnitude of the first eccentric force does not change. Given the change of the gas force on the axis A in a period under fixed working conditions, the directions of the first eccentric force and the second eccentric force do not change with the rotation angle. From this, it can be concluded that the change law of the balancing force generated by each balancing device is only related to the gas force and the axial installation position, and the reference of the axial height can be selected arbitrarily. Combined with reference Figure 3-4 The shaft balancing device of this embodiment can effectively solve the shaft eccentricity and overturning instability caused by gas force imbalance in the rotary scroll compressor, and reduce the deformation of the crankshaft caused by the shaft force.

[0121] Furthermore, the magnitude of the first balancing force is adjustable;

[0122] and / or, the magnitude of the second balancing force is adjustable;

[0123] and / or, the number of the first balancing parts is set to at least two;

[0124] and / or, the number of the second balancing parts is set to at least two;

[0125] and / or, the number of the third balancing parts is set to at least two;

[0126] And / or, the number of the fourth balancing parts is set to at least two.

[0127] Furthermore, the first drive shaft 3 is made of iron; and / or the second drive shaft 4 is made of iron; in order to prevent other parts from being affected by the electromagnetic device, only the drive shaft is limited to an iron structure, which can be affected by the electromagnetic device to produce a balancing force on the shaft system, and other compressor structures are made of non-magnetic materials such as aluminum and copper, which are not affected by the electromagnetic device.

[0128] Furthermore, the balancing member is an electromagnetic device, which is an electromagnet in the prior art. The electromagnet generates a magnetic force, which cooperates with the iron first drive shaft 3 or the second drive shaft 4 to generate a balancing force; and the balancing force can be adjusted by adjusting the current, the number of winding paths, etc.

[0129] According to an embodiment of the present application, an electrical appliance includes a scroll compressor, and the scroll compressor is the scroll compressor described above.

[0130] It is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0131] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application. The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present application, and these improvements and variations should also be regarded as the protection scope of the present application.

Claims

1. A scroll compressor, characterized in that: include: A first compression structure, the first compression structure comprising a first movable scroll (1), the first movable scroll (1) rotating around a central axis of the first movable scroll (1); A second compression structure, the second compression structure comprising a second movable scroll (2), the second movable scroll (2) rotating around the central axis of the second movable scroll; the first movable scroll (1) and the second movable scroll (2) mesh with each other to form a compression chamber; A balancing device, the balancing device is used to provide a balancing force, and the balancing force is used to balance the eccentric force generated by the compression chamber during the compression process; On the cross section of the compression chamber, the direction of a line connecting the central axis of the first movable scroll (1) and the central axis of the second movable scroll (2) is taken as a first direction; The balancing device comprises a first balancing device (5); the balancing force comprises a first balancing force; the first balancing device (5) is used to provide the first balancing force, and the first balancing force is used to balance a first eccentric force in the first direction; The balancing device includes a second balancing device; the balancing force includes a second balancing force; on the cross section of the compression chamber, the direction perpendicular to the first direction is the second direction; the second balancing device is used to provide the second balancing force, and the second balancing force is used to balance the second eccentric force in the second direction.

2. The scroll compressor according to claim 1, characterized in that: The resultant force of the first balancing force and the first eccentric force is zero; and / or, the resultant force of the second balancing force and the second eccentric force is zero; and / or, the resultant moment of the first balancing force and the first eccentric force is zero; And / or, the resultant moment of the second balancing force and the second eccentric force is zero.

3. The scroll compressor according to claim 1, characterized in that: The scroll compressor comprises a compressor housing; the first balancing device (5) is arranged on the compressor housing; and / or the second balancing device is arranged on the compressor housing.

4. The scroll compressor according to claim 1, characterized in that: The first compression structure further comprises a first drive shaft (3), and the first movable scroll (1) is arranged at a first end of the first drive shaft (3); And / or, the second compression structure further comprises a second drive shaft (4), and the second movable scroll (2) is arranged at a first end of the second drive shaft (4).

5. The scroll compressor according to claim 4, characterized in that: The first balancing device (5) comprises a first balancing part; the first balancing part corresponds to the position of the first compression structure in the axial direction of the first drive shaft (3); the first balancing part is used to provide the first balancing force to the first compression structure; And / or, the second balancing device comprises a second balancing part; the second balancing part corresponds to the position of the first compression structure in the axial direction of the first drive shaft (3); the second balancing part is used to provide the second balancing force to the first compression structure; And / or, the first balancing device (5) comprises a third balancing portion; the third balancing portion corresponds to the position of the second compression structure in the axial direction of the second drive shaft (4); the third balancing portion is used to provide the first balancing force to the second compression structure; And / or, the second balancing device comprises a fourth balancing part; the fourth balancing part corresponds to the position of the second compression structure in the axial direction of the second drive shaft (4); the fourth balancing part is used to provide the second balancing force to the second compression structure.

6. The scroll compressor according to claim 5, characterized in that: The first balancing part includes a first balancing member and a second balancing member; the balancing forces provided by the first balancing member and the second balancing member are in opposite directions; And / or, the second balancing part comprises a third balancing member and a fourth balancing member; the directions of the balancing forces provided by the third balancing member and the fourth balancing member are opposite; And / or, the third balancing part comprises a fifth balancing member and a sixth balancing member; the directions of the balancing forces provided by the fifth balancing member and the sixth balancing member are opposite; And / or, the fourth balancing part includes a seventh balancing member and an eighth balancing member; the directions of the balancing forces provided by the seventh balancing member and the eighth balancing member are opposite.

7. The scroll compressor according to claim 6, characterized in that: The distance between the first balancing member and the first movable scroll (1) in the axial direction is d1; the distance between the second balancing member and the first movable scroll (1) in the axial direction is d2; Where d1≠d2; And / or, the axial distance between the third balancing member and the first movable scroll (1) is d3; the axial distance between the fourth balancing member and the first movable scroll (1) is d4; Where d3≠d4; And / or, the distance between the fifth balancing member and the second movable scroll (2) in the axial direction is d5; the distance between the sixth balancing member and the second movable scroll (2) in the axial direction is d6; wherein d5≠d6; And / or, the axial distance between the seventh balance member and the second movable scroll (2) is d7; the axial distance between the eighth balance member and the second movable scroll (2) is d8; wherein d7≠d8.

8. The scroll compressor according to claim 7, characterized in that: d1>d2; and / or, d3>d4; and / or, d5>d6; and / or, d7>d8.

9. The scroll compressor according to claim 8, characterized in that: The eccentric force received by the first compression structure in the first direction is referred to as the positive first eccentric force; the eccentric force received by the second compression structure in the first direction is referred to as the negative first eccentric force; The eccentric force received by the first compression structure in the second direction is referred to as the positive second eccentric force; The eccentric force received by the second compression structure in the second direction is taken as the reverse second eccentric force; The first balancing member is used to provide a first balancing force in the same direction; The first balancing force in the same direction is in the same direction as the first positive eccentric force; And / or, the second balancing member is used to provide an opposite first balancing force; The reverse first balancing force is in the opposite direction to the forward first eccentric force; And / or, the third balancing member is used to provide a second balancing force in the same direction, and the second balancing force in the same direction is in the same direction as the second positive eccentric force; And / or, the fourth balancing member is used to provide a reverse second balancing force; the reverse second balancing force is opposite to the direction of the forward second eccentric force; And / or, the fifth balancing member is used to provide a third balancing force in the same direction; the third balancing force in the same direction is in the same direction as the first eccentric force in the opposite direction; And / or, the sixth balancing member is used to provide a reverse third balancing force; the reverse third balancing force is opposite to the reverse first eccentric force; And / or, the seventh balancing member is used to provide a fourth balancing force in the same direction; the fourth balancing force in the same direction is in the same direction as the second eccentric force in the opposite direction; And / or, the eighth balancing member is used to provide a reverse fourth balancing force; the reverse fourth balancing force is opposite to the reverse second eccentric force.

10. The scroll compressor according to claim 5, characterized in that: The magnitude of the first balancing force is adjustable; And / or, the magnitude of the second balancing force is adjustable; And / or, the number of the first balancing parts is set to at least two; And / or, the number of the second balancing parts is set to at least two; And / or, the number of the third balancing parts is set to at least two; And / or, the number of the fourth balancing parts is set to at least two.

11. The scroll compressor according to claim 6, characterized in that: The material of the first drive shaft (3) is iron; and / or the material of the second drive shaft (4) is iron.

12. The scroll compressor according to claim 11, characterized in that: The balance member is an electromagnetic device.

13. An electrical appliance comprising a scroll compressor, characterized in that: The scroll compressor is the scroll compressor according to any one of claims 1 to 12.

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