Balancing block, scroll compressor and air conditioner

Abstract

Embodiments of the present application provide a balance block, a scroll compressor and an air conditioner, the balance block comprising: a mounting portion, the mounting portion being provided with a mounting hole for mounting a crankshaft of the scroll compressor; and a counterweight portion, the counterweight portion being arranged on the mounting portion and extending to one side of the mounting portion along an axial direction of the mounting hole, the counterweight portion comprising: a first circular arc surface and a second circular arc surface, the second circular arc surface being arranged away from the mounting hole compared with the first circular arc surface, a cross section of the first circular arc surface being a first circular arc segment, and a cross section of the second circular arc surface being a second circular arc segment; wherein a center of the first circular arc segment and / or a center of the second circular arc segment has a spacing from a central axis of the mounting hole. The gas resistance moment received by the balance block can be effectively reduced, the input power of the scroll compressor can be reduced, the energy efficiency of the scroll compressor can be improved, the weight proportion of the balance block in the whole dynamic and static design can be reduced, the vibration level of the scroll compressor can be improved, and the reliability of the scroll compressor during high-frequency operation can be improved.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of scroll compressor device, and in particular, to a balance block, a scroll compressor and an air conditioner. BACKGROUND

[0002] The scroll compressor is a new type of positive displacement compressor, mainly composed of a casing, a static disc, a dynamic disc, a main frame, a main balance block, a crankshaft, a stator, a rotor, a secondary balance block and a secondary support.

[0003] At present, in the related art, when the main balance block is applied, in the operation process of the scroll compressor, there is a problem that the gas resistance torque of the main balance block is large, and the weight of the balance block in the whole dynamic and static balance design is large, which causes the input power of the scroll compressor to increase, the high-frequency vibration is large, and the reliability of the scroll compressor in high-frequency operation is affected. SUMMARY

[0004] Embodiments of the present application aim to at least solve one of the technical problems existing in the prior art.

[0005] To this end, a first aspect of embodiments of the present application provides a balance block.

[0006] A second aspect of embodiments of the present application provides a scroll compressor.

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

[0008] Therefore, according to a first aspect of embodiments of the present application, a balance block is provided, the balance block comprising: a mounting portion, the mounting portion being provided with a mounting hole, the mounting hole being used for mounting a crankshaft of a scroll compressor; a counterweight portion, the counterweight portion being arranged on the mounting portion and extending to one side of the mounting portion along an axial direction of the mounting hole, the counterweight portion comprising: a first circular arc surface and a second circular arc surface, the second circular arc surface being arranged away from the mounting hole compared with the first circular arc surface, a cross section of the first circular arc surface being a first circular arc segment, and a cross section of the second circular arc surface being a second circular arc segment; wherein a center of the first circular arc segment and / or a center of the second circular arc segment has a spacing from a central axis of the mounting hole.

[0009] The balance block provided by the embodiments of the present application comprises a mounting portion and a counterweight portion, and specifically, the mounting portion is provided with a mounting hole, and the mounting hole is used for mounting a crankshaft of a scroll compressor. It can be understood that the scroll compressor comprises a crankshaft and a motor, the output end of the motor is connected with the crankshaft, and the mounting portion is sleeved on the outside of the crankshaft through the mounting hole, so that the crankshaft drives the balance block to rotate under the driving of the motor.

[0010] The counterweight part is arranged on the mounting part and extends along one side of the mounting part in the axial direction. It can be understood that the mounting part and the counterweight part are in an integrated structure, so as to ensure the structural strength of the balance block, prolong the service life of the balance block, and further improve the operation stability and reliability of the scroll compressor with the balance block. In addition, the integrated structure also facilitates mass production, thereby reducing the production cost of the balance block.

[0011] Specifically, the scroll compressor further comprises a static scroll plate, a suction passage arranged on the static scroll plate, a dynamic scroll plate, and a compression cavity. During the operation of the scroll compressor, low-temperature refrigerant enters the compression cavity through the suction passage. The other end of the crankshaft is connected to the dynamic scroll plate, so that the rotation of the crankshaft can drive the dynamic scroll plate to perform rotary motion around the static scroll plate, and the volume of the compression cavity is continuously reduced during the rotary motion, thereby increasing the pressure in the compression cavity to achieve the required working condition. The static scroll plate is further provided with an exhaust port which is in communication with the compression cavity. The required high-temperature and high-pressure refrigerant gas is discharged into the shell of the scroll compressor through the exhaust port, and then discharged from the scroll compressor through the discharge passage of the shell to enter the system circulation. This is the working process of the scroll compressor.

[0012] By arranging the balance block in the scroll compressor, the vibration problem in the operation process of the scroll compressor is improved. However, during the operation of the scroll compressor, the balance block is subjected to a large gas resistance torque, and the weight of the balance block is large in the entire dynamic and static balance design, which increases the input power of the scroll compressor and causes large high-frequency vibration, thereby affecting the energy efficiency of the compressor and the reliability of high-frequency operation.

[0013] The counterweight part comprises a first circular arc surface and a second circular arc surface. The first circular arc surface is arranged closer to the mounting hole than the second circular arc surface, and the cross section of the first circular arc surface is a first circular arc segment, and the cross section of the second circular arc surface is a second circular arc segment. The center of the first circular arc segment and / or the center of the second circular arc segment has a spacing from the central axis of the mounting hole. That is, the first circular arc surface and the second circular arc surface are arranged eccentrically relative to the central axis of the mounting hole, and the spacing between the center of the first circular arc segment and / or the center of the second circular arc segment and the central axis of the mounting hole is the eccentricity. Therefore, during the rotation of the balance block, the gas resistance torque acting on the balance block can be effectively reduced, the input power of the scroll compressor can be reduced, and the energy efficiency of the scroll compressor can be improved.

[0014] In addition, since the first circular arc surface and the second circular arc surface are arranged eccentrically relative to the central axis of the mounting hole, that is, the center of mass of the counterweight part is moved outward relative to the mounting part, the weight proportion of the balance block in the entire dynamic and static design can be effectively reduced, thereby effectively reducing the vibration generated during the operation of the scroll compressor with the balance block, improving the vibration level of the scroll compressor, and improving the reliability of the scroll compressor during high-frequency operation.

[0015] It should be noted that the distance between the center of the first arc segment or the second arc segment and the central axis of the mounting hole, i.e. the eccentricity, should not be too large, otherwise it will lead to an abnormal shape of the balance block, increasing the manufacturing difficulty of the balance block. It can be set according to actual needs.

[0016] In addition, the balance block provided by the above technical scheme of the application also has the following additional technical features:

[0017] In one possible design, the center of the first arc segment has a first distance from the central axis of the mounting hole.

[0018] In this design, it is specifically defined that in the counterweight part, compared to the first arc surface close to the mounting hole, the cross section of the first arc surface is a first arc segment, and the center of the first arc segment has a first distance from the central axis of the mounting hole, i.e. the eccentricity of the first arc segment relative to the central axis of the mounting hole is limited. That is, the center of the first arc segment is eccentrically arranged relative to the central axis of the mounting hole, i.e. the gap between the first arc surface and the side wall of the scroll compressor crankshaft gradually changes from one end to the other end, so that during the rotation of the balance block, the gas flow will flow into the gap between the first arc surface and the side wall of the scroll compressor crankshaft, thereby effectively improving the resistance torque of the gas, reducing the input power of the scroll compressor, and improving the energy efficiency of the scroll compressor.

[0019] In addition, since the first arc surface is arranged eccentrically relative to the central axis of the mounting hole, i.e. the center of mass of the counterweight part is moved outward relative to the mounting part, the weight proportion of the balance block in the entire dynamic and static design can be effectively reduced, thereby effectively reducing the vibration generated during the operation of the scroll compressor with the balance block, thereby improving the vibration level of the scroll compressor and improving the reliability of the scroll compressor during high-frequency operation.

[0020] It should be noted that the distance between the center of the first arc segment and the central axis of the mounting hole, i.e. the eccentricity, should not be too large, otherwise it will lead to an abnormal shape of the balance block, increasing the manufacturing difficulty of the balance block, and increasing the production cost of the balance block. Therefore, the distance between the center of the first arc segment and the central axis of the mounting hole needs to be reasonably set to improve the energy efficiency and vibration of the compressor while reducing the production cost of the balance block.

[0021] In one possible design, the first distance d and the hole diameter R of the mounting hole satisfy 2%≤d / R≤20%.

[0022] In the design, the range of the first distance d between the center of the first circular segment and the central axis of the mounting hole is defined, specifically, the first distance d and the hole diameter R of the mounting hole satisfy 2%≤d / R≤20%. It can be understood that if the first distance d is too small, the gas resistance torque and vibration problems of the balance block during rotation cannot be effectively improved. If the first distance is too large, the balance block will be shaped, increasing the manufacturing difficulty of the balance block and the production cost of the balance block. By satisfying 2%≤d / R≤20% of the first distance d and the hole diameter R of the mounting hole, the manufacturing difficulty of the balance block can be reduced while effectively improving the gas resistance torque and vibration problems of the balance block during rotation, improving the operation stability and reliability of the scroll compressor, and further reducing the production cost of the balance block.

[0023] In a possible design, the center of the second circular segment and the central axis of the mounting hole have a second distance, wherein the second distance D and the hole diameter R of the mounting hole satisfy 2%≤D / R≤20%.

[0024] In the design, the second circular surface of the counterweight part, which is arranged away from the mounting hole compared to the first circular surface, has a second circular segment in its cross section, and the center of the second circular segment and the central axis of the mounting hole have a second distance, i.e. the eccentricity of the second circular segment relative to the central axis of the mounting hole is defined. That is, the center of the second circular segment is arranged eccentrically relative to the central axis of the mounting hole, so as to reduce the gas resistance torque of the balance block during rotation, and at the same time, the center of mass of the counterweight part is moved outward relative to the mounting part, thereby effectively reducing the weight ratio of the balance block in the entire dynamic and static design, so as to effectively reduce the vibration generated during the operation of the scroll compressor with the balance block, thereby improving the vibration level of the scroll compressor and improving the reliability of the scroll compressor during high-frequency operation.

[0025] It can be understood that the eccentric arrangement of the center of the first circular segment relative to the central axis of the mounting hole and the eccentric arrangement of the center of the second circular segment relative to the central axis of the mounting hole can further reduce the weight ratio of the balance block in the entire dynamic and static design while reducing the gas resistance torque of the balance block during rotation, so as to effectively reduce the vibration generated during the operation of the scroll compressor with the balance block, thereby improving the vibration level of the scroll compressor and improving the reliability of the scroll compressor during high-frequency operation.

[0026] In a possible design, the balance block further comprises a windward surface and a leeward surface, the windward surface is connected to one end of the first circular surface and the second circular surface respectively, and the leeward surface is connected to the other end of the first circular surface and the second circular surface respectively, and the counterweight part further comprises at least two planes, the at least two planes are arranged on both sides of the first circular surface and extend to the windward surface and the leeward surface respectively.

[0027] In the design, the balance block further comprises a windward face and a leeward face, specifically, the balance block drives the surrounding airflow to move in the process of rotation, so that the balance block has the windward face and the leeward face arranged along the rotation direction. The windward face is connected to one end of the first and second arc faces respectively, and the leeward face is connected to the other end of the first and second arc faces respectively. The counterweight part further comprises at least two planes, specifically, the at least two planes are arranged on both sides of the first arc face respectively and extend to the windward face and the leeward face respectively, that is, the windward face and the first arc face are connected by the at least one plane, and the leeward face and the first arc face are connected by the at least one plane, that is, the side wall of the counterweight part close to the mounting hole comprises one arc face and at least two planes, so that the gap between the side wall of the counterweight part close to the mounting hole and the side wall of the scroll compressor crankshaft gradually changes from one end to the other end. Further, in the process of rotation of the balance block, the airflow flows into the gradually changing gap, which can reduce and improve the gas resistance moment, reduce the input power of the scroll compressor, and improve the energy efficiency of the scroll compressor.

[0028] In addition, by extending the at least two planes to the windward face and the leeward face respectively, the area of the windward face and the leeward face can be reduced, further reducing the gas resistance moment received by the balance block in the process of rotation. Compared with the related art in which the inner and outer circles of the counterweight part are concentrically arranged with the mounting hole, the side wall of the counterweight part close to the mounting hole comprises one arc face and at least two planes, which can reduce the weight of the balance block to a certain extent, further improving the vibration level during the operation of the scroll compressor.

[0029] In a possible design, the included angle α between the plane where the windward face is located or the tangent plane of any point of the windward face and the plane where the leeward face is located or the tangent plane of any point of the leeward face satisfies 0° < α < 180°.

[0030] In the design, the included angle α between the plane where the windward face is located or the tangent plane of any point of the windward face and the plane where the leeward face is located or the tangent plane of any point of the leeward face satisfies 0° < α < 180°. Specifically, the windward face can be a plane or a curved surface, and the leeward face can be a plane or a curved surface, which can be set according to actual needs. When the windward face and the leeward face are planes, the gas resistance moment received by the balance block in the process of rotation can be further reduced, the input power of the scroll compressor can be reduced, and the energy efficiency of the scroll compressor can be improved. By setting the included angle α between the plane where the windward face is located or the tangent plane of any point of the windward face and the plane where the leeward face is located or the tangent plane of any point of the leeward face to satisfy 0° < α < 180°, that is, the windward face and the leeward face are inclined, the gas resistance moment received by the balance block in the process of rotation can be further reduced, the input power of the scroll compressor can be reduced, and the energy efficiency of the scroll compressor can be improved.

[0031] In a possible design, the hole wall of the mounting hole includes a first hole wall and a second hole wall, any point on the second hole wall is arranged closer to the first circular surface than the first hole wall, a plane where the windward surface is located or a tangent plane of any point of the windward surface has an included angle β with the reference plane, and a plane where the leeward surface is located or a tangent plane of any point of the leeward surface has an included angle γ with the reference plane.

[0032] In this design, the hole wall of the mounting hole includes a first hole wall and a second hole wall, any point on the second hole wall is arranged closer to the first circular surface than the first hole wall, that is, the mounting hole is equally divided into the second hole wall close to the first circular surface and the first hole wall away from the first circular surface. A plane passing through the central axis of the mounting hole and perpendicular to the central surface of the second hole wall is set as the reference plane, and the reference plane is also the dividing surface of the first hole wall and the second hole wall.

[0033] Specifically, the plane where the windward surface is located or the tangent plane of any point of the windward surface has an included angle β with the reference plane, and the plane where the leeward surface is located or the tangent plane of any point of the leeward surface has an included angle γ with the reference plane, wherein the included angle β satisfies 3°≤β≤25°, and the included angle γ satisfies 3°≤γ≤25°. That is, the inclination angles of the windward surface and the leeward surface relative to the reference plane are specifically limited, so that the gas resistance torque received during the rotation of the balance block can be further reduced, the input power of the scroll compressor can be reduced, and the energy efficiency of the scroll compressor can be improved.

[0034] It can be understood that the inclination angles of the windward surface and the leeward surface should not be too large, otherwise the effect of reducing the gas resistance torque cannot be achieved, and should not be too small, otherwise the effect of reducing the gas resistance torque cannot be achieved. By limiting the inclination angles of the windward surface and the leeward surface, the gas resistance torque received during the rotation of the balance block can be effectively reduced, the input power of the scroll compressor can be reduced, and the energy efficiency of the scroll compressor can be improved.

[0035] In a possible design, the included angle β and the included angle γ are symmetrically arranged about the central surface of the second hole wall.

[0036] In this design, the included angle β and the included angle γ are symmetrically arranged about the central surface of the second hole wall, which can effectively reduce the gas resistance torque received during the rotation of the balance block, reduce the input power of the scroll compressor, improve the energy efficiency of the scroll compressor, and ensure the balance effect of the balance block.

[0037] In a possible design, the counterweight part further includes a top wall surface connected with the first circular surface and the second circular surface, and the balance block further includes a first tangent surface arranged at the connection between the top wall surface and the windward surface.

[0038] In the design, the counterweight part further comprises a top wall surface, and the balance block further comprises a first tangent surface, and specifically, the top wall surface is connected with the first arc surface and the second arc surface respectively, and the top wall surface is a side surface of the counterweight part away from the mounting part. By arranging the first tangent surface at the connection between the top wall surface and the windward surface, it can be understood that the first tangent surface is arranged obliquely from the top wall surface to the windward surface. On the one hand, the weight of the balance block can be further reduced, the vibration level of the scroll compressor with the balance block during operation can be improved, and the reliability of high-frequency operation of the scroll compressor can be improved. On the other hand, the area of the windward surface is further reduced, and thus the gas resistance moment received by the balance block during operation can be further reduced, the input power of the scroll compressor can be reduced, and the energy efficiency of the scroll compressor can be improved.

[0039] In a possible design, the balance block further comprises a second tangent surface, and the second tangent surface is arranged at the connection between the top wall surface and the leeward surface.

[0040] In the design, the balance block further comprises a second tangent surface, and specifically, the second tangent surface is arranged at the connection between the top wall surface and the leeward surface, that is, in addition to the first tangent surface arranged at the connection between the top wall surface and the windward surface, the second tangent surface is arranged at the connection between the leeward surface and the top wall surface. It can be understood that the second tangent surface is arranged obliquely from the top wall surface to the leeward surface. On the one hand, while further reducing the gas resistance moment received by the balance block during operation, the weight of the balance block can be further reduced, the vibration level of the scroll compressor with the balance block during operation can be improved, and the reliability of high-frequency operation of the scroll compressor can be improved. On the other hand, by arranging the first tangent surface and the second tangent surface on the left and right sides of the balance block respectively, the center of mass of the balance block can be prevented from deviating, and the balancing effect of the balance block can be ensured.

[0041] In a possible design, the first tangent surface and the second tangent surface are arranged symmetrically about the center surface of the second hole wall.

[0042] In the design, the first tangent surface and the second tangent surface are arranged symmetrically about the center surface of the second hole wall, so that the balancing effect of the balance block can be ensured on the basis of further reducing the gas resistance moment received by the balance block during operation, reducing the weight of the balance block, improving the vibration level of the scroll compressor with the balance block during operation, and improving the reliability of high-frequency operation of the scroll compressor. In addition, the processing difficulty of the balance block can be reduced, the processing efficiency of the balance block can be improved, and the production cost of the balance block can be reduced.

[0043] In a possible design, the balance block further comprises a through-flow hole, and the through-flow hole is arranged through from the windward surface to the second arc surface.

[0044] In the design, the balance block further comprises a through hole, and specifically, the through hole is arranged through from the windward surface to the second arc surface. It can be understood that the through hole is in communication with the internal space of the shell. By arranging the through hole through from the windward surface to the second arc surface, part of the airflow can enter from the through hole during the rotation of the balance block, thereby further reducing the gas resistance moment received by the balance block during the rotation, reducing the input power of the scroll compressor, and further improving the energy efficiency of the scroll compressor.

[0045] In addition, by opening the through hole, the weight of the balance block can be further reduced, and the vibration level during the operation of the scroll compressor can be improved.

[0046] It can be understood that the number of through holes can be set to be multiple, and the multiple through holes can further reduce the gas resistance moment received by the balance block during the rotation. However, the number of through holes should not be too much, otherwise the structural strength of the balance block will be reduced, resulting in a reduction in the service life of the balance block. The number of through holes can be set according to actual needs.

[0047] According to a second aspect of the present application, a scroll compressor is provided, comprising the balance block provided in any of the above technical solutions, thus having all the beneficial technical effects of the balance block, which will not be repeated here.

[0048] Further, the scroll compressor further comprises a crankshaft and a driving part, wherein the crankshaft is located in the mounting hole of the balance block, the driving part is connected with the crankshaft, the driving part can drive the crankshaft to rotate, and the rotation of the crankshaft can drive the balance block to rotate.

[0049] The driving part comprises a motor, the output end of the motor is connected with the crankshaft, and the mounting part is sleeved outside the crankshaft through the mounting hole, so that the crankshaft drives the balance block to rotate under the driving of the motor.

[0050] Specifically, the scroll compressor further comprises a static scroll, an air suction channel arranged on the static scroll, a dynamic scroll, and a compression chamber. During the operation of the scroll compressor, low-temperature refrigerant enters the compression chamber through the air suction channel. The other end of the crankshaft is connected with the dynamic scroll, so that the rotation of the crankshaft can drive the dynamic scroll to perform rotary motion around the static scroll, and the volume of the compression chamber is continuously reduced during the rotary motion, so as to increase the pressure in the compression chamber, so as to reach the required working condition. The static scroll further comprises an exhaust port in communication with the compression chamber, and the required high-temperature and high-pressure refrigerant gas is discharged into the shell of the scroll compressor through the exhaust port, and then discharged from the scroll compressor through the discharge channel of the shell to enter the system circulation. This is the working process of the scroll compressor.

[0051] According to a third aspect of the present application, there is provided an air conditioner comprising the scroll compressor provided in any of the above technical solutions, thus having all the beneficial technical effects of the scroll compressor, which will not be repeated here.

[0052] Additional aspects and advantages of the present application will be set forth in part in the description that follows, and in part will become apparent to those skilled in the art upon examination of the following description and the accompanying drawings, or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0053] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood by considering the following detailed description, including the accompanying drawings, in which:

[0054] Figure 1 One of the structural schematic diagrams of a balance block according to one embodiment of the present application is shown;

[0055] Figure 2 Another of the structural schematic diagrams of a balance block according to one embodiment of the present application is shown;

[0056] Figure 3 Still another of the structural schematic diagrams of a balance block according to one embodiment of the present application is shown;

[0057] Figure 4 Yet another of the structural schematic diagrams of a balance block according to one embodiment of the present application is shown;

[0058] Figure 5 Still another of the structural schematic diagrams of a balance block according to one embodiment of the present application is shown;

[0059] Figure 6 Yet another of the structural schematic diagrams of a balance block according to one embodiment of the present application is shown;

[0060] Figure 7 Still another of the structural schematic diagrams of a balance block according to one embodiment of the present application is shown.

[0061] Correspondence between reference signs and component names in the accompanying drawings is as follows: Figures 1 to 7 Correspondence between reference signs and component names in the accompanying drawings is as follows:

[0062] 100 balance block, 110 mounting portion, 111 mounting hole, 1111 first hole wall, 1112 second hole wall, 120 counterweight portion, 121 first circular arc surface, 122 second circular arc surface, 123 flat surface, 124 top wall surface, 130 windward surface, 140 leeward surface, 150 reference surface, 160 center surface of second hole wall, 170 first tangent surface, 180 second tangent surface, 190 through-flow hole. DETAILED DESCRIPTION

[0063] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0064] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present application, however, the present application can also be implemented in other different manners from those described herein, and therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0065] Some embodiments provided by the present application will be described below with reference to the accompanying drawings and specific embodiments. Figures 1 to 7

[0066] Embodiment one:

[0067] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 , the embodiment of the first aspect of the present application provides a balance block 100, the balance block 100 comprising: a mounting portion 110, the mounting portion 110 being provided with a mounting hole 111, the mounting hole 111 being used for mounting a crankshaft of a scroll compressor; a counterweight portion 120, the counterweight portion 120 being arranged on the mounting portion 110 and extending to one side of the mounting portion 110 along an axial direction of the mounting hole 111, the counterweight portion 120 comprising: a first circular arc surface 121 and a second circular arc surface 122, the second circular arc surface 122 being arranged away from the mounting hole 111 compared with the first circular arc surface 121, a cross section of the first circular arc surface 121 being a first circular arc segment, a cross section of the second circular arc surface 122 being a second circular arc segment; wherein a center of the first circular arc segment and / or a center of the second circular arc segment has a spacing from a central axis of the mounting hole 111.

[0068] The balance block 100 provided by the embodiment of the present application comprises the mounting portion 110 and the counterweight portion 120, specifically, the mounting hole 111 is arranged on the mounting portion 110, the mounting hole 111 being used for mounting the crankshaft of the scroll compressor. It can be understood that the scroll compressor comprises the crankshaft and a motor, an output end of the motor being connected with the crankshaft, the mounting portion 110 being sleeved on the outside of the crankshaft through the mounting hole 111, so that the crankshaft drives the balance block 100 to rotate under the driving of the motor.

[0069] ​The counterweight part 120 is arranged on the mounting part 110 and extends along one side of the mounting part 110 in the axial direction. It can be understood that the mounting part 110 and the counterweight part 120 are in an integrated structure, so as to ensure the structural strength of the balance block 100, prolong the service life of the balance block 100, and further improve the operation stability and reliability of the scroll compressor with the balance block 100. In addition, the integrated structure also facilitates mass production, thereby reducing the production cost of the balance block 100.

[0070] Specifically, the scroll compressor further comprises a static scroll plate, a suction passage arranged on the static scroll plate, a dynamic scroll plate, and a compression cavity. During the operation of the scroll compressor, low-temperature refrigerant enters the compression cavity through the suction passage. The other end of the crankshaft is connected to the dynamic scroll plate, so that the rotation of the crankshaft can drive the dynamic scroll plate to perform rotary motion around the static scroll plate, and the volume of the compression cavity is continuously reduced during the rotary motion, thereby increasing the pressure in the compression cavity to achieve the required working condition. The static scroll plate is further provided with an exhaust port and is in communication with the compression cavity. The required high-temperature and high-pressure refrigerant gas is discharged into the shell of the scroll compressor through the exhaust port, and then discharged from the scroll compressor into the system circulation through the discharge passage of the shell. This is the working process of the scroll compressor.

[0071] By arranging the balance block 100 in the scroll compressor, the vibration problem in the operation process of the scroll compressor is improved. However, during the operation of the scroll compressor, the balance block 100 is subjected to a large gas resistance torque, and the weight of the balance block 100 is large in the entire dynamic and static balance design, which leads to an increase in the input power of the scroll compressor and a large high-frequency vibration, thereby affecting the energy efficiency of the compressor and the reliability of high-frequency operation.

[0072] The counterweight part 120 comprises a first circular arc surface 121 and a second circular arc surface 122. The first circular arc surface 121 is arranged closer to the mounting hole 111 than the second circular arc surface 122, and the cross section of the first circular arc surface 121 is a first circular arc segment, and the cross section of the second circular arc surface 122 is a second circular arc segment. The center of the first circular arc segment and / or the center of the second circular arc segment has a spacing from the central axis of the mounting hole 111. That is, the first circular arc surface 121 and the second circular arc surface 122 are arranged eccentrically relative to the central axis of the mounting hole 111, and the spacing between the center of the first circular arc segment and / or the center of the second circular arc segment and the central axis of the mounting hole 111 is the eccentricity. Therefore, during the rotation of the balance block 100, the gas resistance torque acting on the balance block 100 can be effectively reduced, the input power of the scroll compressor can be reduced, and the energy efficiency of the scroll compressor can be improved.

[0073] In addition, since the first arc surface 121 and the second arc surface 122 are arranged eccentrically relative to the central axis of the mounting hole 111, that is, the center of gravity of the counterweight part 120 is moved outward relative to the mounting part 110, the weight proportion of the balance block 100 in the entire dynamic and static design can be effectively reduced, thereby effectively reducing the vibration generated during the operation of the scroll compressor with the balance block 100, and further improving the vibration level of the scroll compressor and improving the reliability of the scroll compressor during high-frequency operation.

[0074] It should be noted that the distance between the center of the first arc segment or the second arc segment and the central axis of the mounting hole 111, that is, the eccentricity, should not be too large, otherwise it will lead to the special shape of the balance block 100 and increase the manufacturing difficulty of the balance block 100. It can be set according to actual needs.

[0075] As shown in Figure 1 , Figure 3 and Figure 5 , in one specific embodiment, further, the center of the first arc segment has a first distance from the central axis of the mounting hole 111.

[0076] In this embodiment, it is specifically defined that in the counterweight part 120, the first arc surface 121 arranged close to the mounting hole 111 has a first arc segment in the cross section, and the center of the first arc segment has a first distance from the central axis of the mounting hole 111, that is, the eccentricity of the first arc segment relative to the central axis of the mounting hole 111 is limited. That is, the center of the first arc segment is arranged eccentrically relative to the central axis of the mounting hole 111, that is, the gap between the first arc surface 121 and the side wall of the scroll compressor crankshaft gradually changes from one end to the other end, so that during the rotation of the balance block 100, the gas flow will flow into the gap between the first arc surface 121 and the side wall of the scroll compressor crankshaft, which gradually changes, thereby effectively improving the resistance moment of the gas, reducing the input power of the scroll compressor, and improving the energy efficiency of the scroll compressor.

[0077] In addition, since the first arc surface 121 is arranged eccentrically relative to the central axis of the mounting hole 111, that is, the center of gravity of the counterweight part 120 is moved outward relative to the mounting part 110, the weight proportion of the balance block 100 in the entire dynamic and static design can be effectively reduced, thereby effectively reducing the vibration generated during the operation of the scroll compressor with the balance block 100, and further improving the vibration level of the scroll compressor and improving the reliability of the scroll compressor during high-frequency operation.

[0078] It should be noted that the distance between the center of the first circular arc segment and the central axis of the mounting hole 111, i.e., the eccentricity, should not be too large, otherwise it will lead to the special shape of the balance block 100, increase the manufacturing difficulty of the balance block 100, and increase the production cost of the balance block 100. Therefore, the distance between the center of the first circular arc segment and the central axis of the mounting hole 111 needs to be reasonably set to improve the efficiency and vibration of the compressor while reducing the production cost of the balance block 100.

[0079] On the basis of the above embodiment, further, the first distance d and the hole diameter R of the mounting hole 111 satisfy 2%≤d / R≤20%.

[0080] In this embodiment, the value range of the distance between the center of the first circular arc segment and the central axis of the mounting hole 111 is limited, specifically, the first distance d and the hole diameter R of the mounting hole 111 satisfy 2%≤d / R≤20%. It can be understood that if the first distance d is too small, the gas resistance torque and vibration problems of the balance block 100 during rotation cannot be effectively improved. If the first distance is too large, it will lead to the special shape of the balance block 100, increase the manufacturing difficulty of the balance block 100, and increase the production cost of the balance block 100. By satisfying 2%≤d / R≤20% of the first distance d and the hole diameter R of the mounting hole 111, the gas resistance torque and vibration problems of the balance block 100 during rotation can be effectively improved, the manufacturing difficulty of the balance block 100 is reduced, and the production cost of the balance block 100 is further reduced.

[0081] In a specific embodiment, further, the center of the second circular arc segment and the central axis of the mounting hole 111 have a second distance, wherein the second distance D and the hole diameter R of the mounting hole 111 satisfy 2%≤D / R≤20%.

[0082] In this embodiment, the cross section of the second circular arc surface 122 in the counterweight part 120, which is arranged away from the mounting hole 111 compared to the first circular arc surface 121, is a second circular arc segment, and the center of the second circular arc segment and the central axis of the mounting hole 111 have a second distance, i.e., the eccentricity of the second circular arc segment relative to the central axis of the mounting hole 111 is limited. That is, the center of the second circular arc segment is arranged eccentrically relative to the central axis of the mounting hole 111, so as to reduce the gas resistance torque of the balance block 100 during rotation, move the center of mass of the counterweight part 120 relative to the mounting part 110, and effectively reduce the weight ratio of the balance block 100 in the whole dynamic and static design, thereby effectively reducing the vibration generated during the operation of the scroll compressor with the balance block 100, improving the vibration level of the scroll compressor, and improving the reliability of the scroll compressor during high-frequency operation.

[0083] It can be understood that the eccentric arrangement of the center of the first circular arc segment relative to the central axis of the mounting hole 111 and the eccentric arrangement of the center of the second circular arc segment relative to the central axis of the mounting hole 111 can reduce the gas resistance moment received by the balance block 100 during rotation, further reduce the weight proportion of the balance block 100 in the entire dynamic and static design, thereby effectively reducing the vibration generated during the operation of the scroll compressor with the balance block 100, and further improving the vibration level of the scroll compressor and improving the reliability of the scroll compressor during high-frequency operation.

[0084] Embodiment two:

[0085] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 , on the basis of any of the above embodiments, further, the balance block 100 further comprises a windward face 130 and a leeward face 140, the windward face 130 is connected to one end of the first circular arc face 121 and the second circular arc face 122 respectively, and the leeward face 140 is connected to the other end of the first circular arc face 121 and the second circular arc face 122 respectively, the counterweight part 120 further comprises at least two planes 123, the at least two planes 123 are respectively arranged on both sides of the first circular arc face 121 and respectively extend to the windward face 130 and the leeward face 140.

[0086] In this embodiment, the balance block 100 further comprises a windward face 130 and a leeward face 140, specifically, the balance block 100 will drive the surrounding airflow to move during rotation, so that the balance block 100 has a windward face 130 and a leeward face 140 arranged in the rotation direction. The windward face 130 is connected to one end of the first circular arc face 121 and the second circular arc face 122 respectively, and the leeward face 140 is connected to the other end of the first circular arc face 121 and the second circular arc face 122 respectively. The counterweight part 120 further comprises at least two planes 123, specifically, the at least two planes 123 are respectively arranged on both sides of the first circular arc face 121 and respectively extend to the windward face 130 and the leeward face 140, that is, the windward face 130 and the first circular arc face 121 are connected by at least one plane 123, and the leeward face 140 and the first circular arc face 121 are connected by at least one plane 123, that is, the side wall of the counterweight part 120 close to the mounting hole 111 includes a circular arc face and at least two planes 123, so that the gap between the side wall of the counterweight part 120 close to the mounting hole 111 and the side wall of the crankshaft of the scroll compressor gradually changes from one end to the other end. Further, during the rotation of the balance block 100, the airflow will flow into the gradually changing gap, which can reduce and improve the gas resistance moment, reduce the input power of the scroll compressor, and improve the energy efficiency of the scroll compressor.

[0087] Furthermore, by extending at least two planes 123 to the windward side 130 and the leeward side 140 respectively, the area of ​​the windward side 130 and the leeward side 140 can be reduced, further reducing the gas resistance torque experienced by the counterweight 100 during rotation. Moreover, compared to the related art where the inner and outer circles of the counterweight 120 are concentrically arranged with the mounting hole 111, having the side wall of the counterweight 120 near the mounting hole 111 include an arc surface and at least two planes 123 can reduce the weight of the counterweight 100 to a certain extent, further improving the vibration level during the operation of the scroll compressor.

[0088] Example 3:

[0089] like Figure 5 As shown, based on any of the above embodiments, the included angle α between the plane where the windward side 130 is located or the cross section of any point on the windward side 130 and the plane where the leeward side 140 is located or the cross section of any point on the leeward side 140 satisfies 0°<α<180°.

[0090] In this embodiment, the angle α between the plane containing the windward side 130 or a tangent plane at any point on the windward side 130 and the plane containing the leeward side 140 or a tangent plane at any point on the leeward side 140 satisfies 0° < α < 180°. Specifically, the windward side 130 can be a plane or a curved surface, and the leeward side 140 can also be a plane or a curved surface, depending on actual needs. Setting the windward side 130 and the leeward side 140 as planes can further reduce the gas resistance torque experienced by the balance block 100 during rotation, reduce the input power of the scroll compressor, and improve the energy efficiency of the scroll compressor. By ensuring that the angle α between the plane containing the windward side 130 or the tangent at any point on the windward side 130 and the plane containing the leeward side 140 or the tangent at any point on the leeward side 140 satisfies 0°<α<180°, i.e., by tilting the windward side 130 and the leeward side 140, the gas resistance torque experienced by the balance block 100 during rotation can be further reduced, thereby reducing the input power of the scroll compressor and improving the energy efficiency of the scroll compressor.

[0091] like Figure 5 As shown, based on the above embodiment, the hole wall of the mounting hole 111 further includes a first hole wall 1111 and a second hole wall 1112. Any point on the second hole wall 1112 is located closer to the first arc surface 121 than the first hole wall 1111. The plane passing through the central axis of the mounting hole 111 and perpendicular to the center plane 160 of the second hole wall is the reference plane 150. The plane where the windward side 130 is located or the tangent plane of any point on the windward side 130 has an angle β with the reference plane 150; and the plane where the leeward side 140 is located or the tangent plane of any point on the leeward side 140 has an angle γ with the reference plane 150.

[0092] In this embodiment, the wall of the mounting hole 111 includes a first hole wall 1111 and a second hole wall 1112. Any point on the second hole wall 1112 is positioned closer to the first arc surface 121 than the first hole wall 1111. In other words, the mounting hole 111 is equally divided into a second hole wall 1112 closer to the first arc surface 121 and a first hole wall 1111 farther from the first arc surface 121. A reference surface 150 is defined as the plane passing through the central axis of the mounting hole 111 and perpendicular to the center plane 160 of the second hole wall. The reference surface 150 also serves as the dividing plane between the first hole wall 1111 and the second hole wall 1112.

[0093] Specifically, the plane containing the windward side 130 or the tangent plane at any point on the windward side 130 forms an angle β with the reference plane 150, and the plane containing the leeward side 140 or the tangent plane at any point on the leeward side 140 forms an angle γ with the reference plane 150. The included angle β satisfies 3° ≤ β ≤ 25°, and the included angle γ satisfies 3° ≤ γ ≤ 25°. This specifically defines the tilt angles of the windward side 130 and the leeward side 140 relative to the reference plane 150, thereby further reducing the gas resistance torque experienced by the balance block 100 during rotation, reducing the input power of the scroll compressor, and improving the energy efficiency of the scroll compressor.

[0094] It is understandable that the tilt angles of the windward side 130 and the leeward side 140 should not be too large, otherwise they will not be able to reduce the gas resistance torque. Nor should they be too small, otherwise they will not be able to reduce the gas resistance torque. By limiting the tilt angles of the windward side 130 and the leeward side 140, the gas resistance torque experienced by the balance block 100 during rotation can be effectively reduced, thereby reducing the input power of the scroll compressor and improving the energy efficiency of the scroll compressor.

[0095] It should be noted that, for example Figure 5 As shown, the plane passing through the horizontal reference line and perpendicular to the orthographic projection of the balance block 100 is the reference plane 150. The vertical center line is perpendicular to the reference line, and the plane passing through the vertical center line and perpendicular to the orthographic projection of the balance block 100 is the center plane 160 of the second hole wall.

[0096] In one specific embodiment, the included angles β and γ are further symmetrically arranged about the center plane 160 of the second hole wall.

[0097] In this embodiment, the included angles β and γ are symmetrically set about the center plane 160 of the second hole wall, which can effectively reduce the gas resistance torque experienced by the balance block 100 during rotation, reduce the input power of the scroll compressor, improve the energy efficiency of the scroll compressor, and ensure the balance effect of the balance block 100.

[0098] Example 4:

[0099] As shown in Figure 3 and Figure 4 on the basis of any of the above embodiments, further, the counterweight part 120 further comprises a top wall surface 124, the top wall surface 124 is connected with the first circular arc surface 121 and the second circular arc surface 122; the balance block 100 further comprises a first tangent surface 170, the first tangent surface 170 is arranged at the connecting position of the top wall surface 124 and the windward surface 130.

[0100] In this embodiment, the counterweight part 120 further comprises a top wall surface 124, and the balance block 100 further comprises a first tangent surface 170. Specifically, the top wall surface 124 is connected with the first circular arc surface 121 and the second circular arc surface 122 respectively, and the top wall surface 124 is a side surface of the counterweight part 120 away from the mounting part 110. By arranging the first tangent surface 170 at the connecting position of the top wall surface 124 and the windward surface 130, it can be understood that the first tangent surface 170 is arranged obliquely from the top wall surface 124 to the windward surface 130. On the one hand, the weight of the balance block 100 can be further reduced, the vibration level of the scroll compressor with the balance block 100 during operation can be improved, and the reliability of the scroll compressor during high-frequency operation can be improved. On the other hand, the area of the windward surface 130 is further reduced, and the gas resistance moment received by the balance block 100 during operation can be further reduced, the input power of the scroll compressor can be reduced, and the energy efficiency of the scroll compressor can be improved.

[0101] As shown in Figure 3 and Figure 4 on the basis of the above embodiment, further, the balance block 100 further comprises a second tangent surface 180, the second tangent surface 180 is arranged at the connecting position of the top wall surface 124 and the leeward surface 140.

[0102] In this embodiment, the balance block 100 further comprises a second tangent surface 180. Specifically, the second tangent surface 180 is arranged at the connecting position of the top wall surface 124 and the leeward surface 140, that is, in addition to arranging the first tangent surface 170 at the connecting position of the top wall surface 124 and the windward surface 130, the second tangent surface 180 is also arranged at the connecting position of the leeward surface 140 and the top wall surface 124. It can be understood that the second tangent surface 180 is arranged obliquely from the top wall surface 124 to the leeward surface 140. On the one hand, while further reducing the gas resistance moment received by the balance block 100 during operation, the weight of the balance block 100 can be further reduced, the vibration level of the scroll compressor with the balance block 100 during operation can be improved, and the reliability of the scroll compressor during high-frequency operation can be improved. On the other hand, arranging the first tangent surface 170 and the second tangent surface 180 on the left and right sides of the balance block 100 respectively can prevent the center of mass of the balance block 100 from deviating, and ensure the balance effect of the balance block 100.

[0103] In one specific embodiment, further, the first cut surface 170 and the second cut surface 180 are symmetrically arranged about the center surface 160 of the second hole wall.

[0104] In this embodiment, the first cut surface 170 and the second cut surface 180 are symmetrically arranged about the center surface 160 of the second hole wall, so that the gas resistance moment received by the balance block 100 during operation can be further reduced, the weight of the balance block 100 can be reduced, the vibration level during operation of the scroll compressor with the balance block 100 can be improved, and the reliability of the scroll compressor during high-frequency operation can be improved. In addition, the machining difficulty of the balance block 100 can be reduced, the machining efficiency of the balance block 100 can be improved, and the production cost of the balance block 100 can be reduced.

[0105] As shown in Figure 1 In one specific embodiment, the center of the first circular arc segment is eccentrically arranged relative to the central axis of the mounting hole 111, the two planes 123 are respectively connected to the two sides of the first circular arc surface 121, and the two planes 123 respectively extend to the windward surface 130 and the leeward surface 140, and the windward surface 130 and the leeward surface 140 are inclined. The input power of the scroll compressor at different operating frequencies is detected by comparing the above-mentioned balance block 100 with the main balance block in the related art in which the inner and outer circles of the counterweight portion 120 are concentrically arranged with the center circle of the crankshaft.

[0106] Table 1: Improvement effect of the technical solution of Figure 1 on input power in ARI 30-140 Hz operating condition

[0107]

[0108]

[0109] Table 2: Improvement effect of the technical solution of Figure 1 on high-frequency vibration in ARI 30-140 Hz operating condition

[0110]

[0111] As can be clearly seen from Table 1 and Table 2, by eccentrically arranging the center of the first circular arc segment relative to the central axis of the mounting hole 111, and by arranging the windward surface 130 and the leeward surface 140 as the plane 123 and inclinedly arranging them, the gas resistance moment received by the balance block 100 can be effectively reduced, the input power of the scroll compressor can be reduced, and the energy efficiency of the scroll compressor can be improved. In addition, the vibration generated during operation of the scroll compressor with the balance block 100 can be effectively reduced, thereby improving the vibration level of the scroll compressor and improving the reliability of the scroll compressor during high-frequency operation.

[0112] Example Five:

[0113] As Figure 7 shown in any of the above embodiments, further, the balance block 100 further comprises a through-flow hole 190, the through-flow hole 190 is provided through from the windward face 130 to the second arc face.

[0114] In this embodiment, the balance block 100 is defined to further comprise a through-flow hole 190, specifically, the through-flow hole 190 is provided through from the windward face 130 to the second arc face. It can be understood that the through-flow hole 190 is in communication with the internal space of the housing. By providing the through-flow hole 190 through from the windward face 130 to the second arc face, during the rotation of the balance block 100, part of the airflow can enter from the through-flow hole 190, thereby further reducing the gas resistance torque received by the balance block 100 during rotation, reducing the input power of the scroll compressor, and further improving the energy efficiency of the scroll compressor.

[0115] In addition, by opening the through-flow hole 190, the weight of the balance block 100 can be further reduced, and the vibration level during operation of the scroll compressor can be improved.

[0116] It can be understood that the number of through-flow holes 190 can be set to be multiple, and multiple through-flow holes 190 can further reduce the gas resistance torque received by the balance block 100 during rotation. However, the number of through-flow holes 190 should not be too much, otherwise the structural strength of the balance block 100 will be reduced, resulting in a reduction in the service life of the balance block 100. The number of through-flow holes 190 can be set according to actual needs.

[0117] Embodiment six:

[0118] According to a second aspect of the present application, a scroll compressor is provided, comprising the balance block 100 provided in any of the above embodiments, thus having all the beneficial technical effects of the balance block 100, which will not be repeated here.

[0119] Further, the scroll compressor further comprises a crankshaft and a driving part, wherein the crankshaft is located in the mounting hole 111 of the balance block 100, the driving part is connected with the crankshaft, the driving part can drive the crankshaft to rotate, and the rotation of the crankshaft can drive the balance block 100 to rotate.

[0120] The driving part comprises a motor, the output end of the motor is connected with the crankshaft, and the mounting part 110 is sleeved on the outside of the crankshaft through the mounting hole 111, so that under the driving of the motor, the crankshaft drives the balance block 100 to rotate.

[0121] Specifically, the scroll compressor further comprises a static scroll plate, a suction passage arranged on the static scroll plate, a dynamic scroll plate and a compression cavity, during the working process of the scroll compressor, the low-temperature refrigerant enters the compression cavity through the suction passage, the other end of the crankshaft is connected with the dynamic scroll plate, so that the rotation of the crankshaft can drive the dynamic scroll plate to rotate around the static scroll plate, and the volume of the compression cavity is continuously reduced during the rotation, so as to increase the pressure in the compression cavity, so as to reach the specified working condition. The static scroll plate is further provided with an exhaust port and is in communication with the compression cavity, and the required high-temperature and high-pressure refrigerant gas is discharged into the shell of the scroll compressor through the exhaust port, and then is discharged from the scroll compressor into the system circulation through the discharge passage of the shell, which is the working process of the scroll compressor.

[0122] Embodiment seven:

[0123] According to a third aspect of the present application, there is provided an air conditioner comprising the scroll compressor provided in any of the above embodiments, thus having all the beneficial technical effects of the scroll compressor, which will not be repeated here.

[0124] In the description of the present specification, the terms "connection", "mounting", "fixing" and the like should be understood in a broad sense, for example, "connection" can be fixed connection, or detachable connection, or integral connection; can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0125] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "a specific embodiment" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0126] The above is only the preferred embodiment of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A balance block, characterized in that, include: The mounting part is provided with mounting holes for mounting the crankshaft of the scroll compressor; A counterweight is disposed in the mounting portion and extends to one side of the mounting portion along the axial direction of the mounting hole. The counterweight includes: A first arc surface and a second arc surface, wherein the second arc surface is located further away from the mounting hole than the first arc surface, and the cross-section of the first arc surface is a first arc segment, and the cross-section of the second arc surface is a second arc segment; Wherein, the center of the first arc segment and / or the center of the second arc segment are spaced apart from the central axis of the mounting hole; The center of the first arc segment has a first distance from the central axis of the mounting hole; The gap between the first arc surface and the side wall of the scroll compressor crankshaft gradually changes from one end to the other. The first spacing d and the diameter R of the mounting hole satisfy 2% ≤ d / R ≤ 20%; The center of the second arc segment has a second distance from the central axis of the mounting hole; Wherein, the second spacing D and the diameter R of the mounting hole satisfy 2%≤D / R≤20%.

2. The balance block according to claim 1, characterized in that, The balance block further includes a windward surface and a leeward surface. The windward surface is connected to one end of the first arc surface and the second arc surface, respectively, and the leeward surface is connected to the other end of the first arc surface and the second arc surface, respectively. The counterweight part further includes: At least two planes are respectively disposed on both sides of the first arc surface and extend to the windward side and the leeward side respectively.

3. The balance block according to claim 2, characterized in that, The angle α between the plane containing the windward side or the tangent plane at any point on the windward side and the plane containing the leeward side or the tangent plane at any point on the leeward side satisfies 0° < α < 180°.

4. The balance block according to claim 3, characterized in that, The wall of the mounting hole includes: First hole wall; The second hole wall, any point on the second hole wall is positioned closer to the first arc surface than the first hole wall; The reference plane is a plane perpendicular to the center plane of the mounting hole and the center plane of the second hole wall. The plane containing the windward surface, or the tangent plane at any point on the windward surface, forms an angle β with the reference plane. The plane containing the leeward side or the tangent plane at any point on the leeward side has an angle γ with the reference plane.

5. The balance block according to claim 4, characterized in that, The included angle β and the included angle γ are symmetrically arranged about the center plane of the second hole wall.

6. The balance block according to claim 4, characterized in that, The counterweight also includes: The top wall surface is connected to the first arc surface and the second arc surface; The balance block also includes: The first cut surface is located at the junction of the top wall surface and the windward surface.

7. The balance block according to claim 6, characterized in that, The balance block also includes: The second cut surface is located at the junction of the top wall surface and the leeward side.

8. The balance block according to claim 7, characterized in that, The first cut surface and the second cut surface are symmetrically arranged about the center plane of the second hole wall.

9. The balance block according to claim 2, characterized in that, The balance block also includes: A flow passage is provided from the windward surface to the second arc surface.

10. A scroll compressor, characterized in that, include: The balance block as described in any one of claims 1 to 9; The crankshaft is located in the mounting hole of the balance block; A drive unit is connected to the crankshaft, and the drive unit can drive the crankshaft to rotate, and the rotation of the crankshaft can drive the balance weight to rotate.

11. An air conditioner, characterized in that, Including the scroll compressor as described in claim 10.

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