WO2022205783A1

WO2022205783A1 - Balance block, scroll compressor, and air conditioner

Info

Publication number: WO2022205783A1
Application number: PCT/CN2021/117660
Authority: WO
Inventors: 于志强; 杨帆
Original assignee: 广东美芝制冷设备有限公司
Priority date: 2021-03-29
Filing date: 2021-09-10
Publication date: 2022-10-06

Abstract

A balance block (100), a scroll compressor, and an air conditioner, the balance block (100) comprising: a mounting part (110), the mounting part (110) being provided with a mounting hole (111), and the mounting hole (111) being used for mounting a crankshaft of a scroll compressor; a counterweight part (120) arranged on the mounting part (110) and extending along the axial direction of the mounting hole (111) to one side of the mounting part (110), the counterweight part (120) comprising: a first arc surface (121) and a second arc surface (122), the second arc surface (122) being disposed further from the mounting hole (111) than the first arc surface (121), the cross section of the first arc surface (121) being a first arc segment and the cross section of the second arc surface (122) being a second arc segment, and there being spacing between the centre of the circle in which the first arc segment is located and/or the centre of the circle in which the second arc segment is located and the central axis of the mounting hole (111).

Description

Balance weights, scroll compressors and air conditioners

This application claims the priority of the Chinese patent application with the application number "202110331778.0" and the application name "Balance Weight, Scroll Compressor and Air Conditioner", which was submitted to the State Intellectual Property Office of China on March 29, 2021, and will be filed in 2021 The priority of the Chinese patent application with the application number "202120635744.6" and the application name "Balance Weight, Scroll Compressor and Air Conditioner" filed with the State Intellectual Property Office of China on March 29, 2009, the entire contents of which are incorporated by reference in in this application.

technical field

Embodiments of the present application relate to the technical field of scroll compressor equipment, and in particular, to a balance weight, a scroll compressor, and an air conditioner.

Background technique

Scroll compressor is a new type of positive displacement compressor, which is mainly composed of casing, stationary plate, moving plate, main frame, main balance block, crankshaft, stator, rotor, auxiliary balance block and auxiliary bracket.

At present, when the main balance block in the related art is applied, during the operation of the scroll compressor, the gas resistance moment of the main balance block is large, and the weight of the balance block in the entire dynamic and static balance design is large, which causes the input of the scroll compressor. The increase in power and the large high-frequency vibration have an impact on the energy efficiency of the scroll compressor and the reliability of high-frequency operation.

SUMMARY OF THE INVENTION

The embodiments of the present application aim to solve at least one of the technical problems existing in the prior art.

To this end, a first aspect of the embodiments of the present application provides a balance weight.

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

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

In view of this, according to a first aspect of the embodiments of the present application, a balance weight is provided, the balance weight includes: a mounting part, the mounting part is provided with a mounting hole, and the mounting hole is used for mounting a crankshaft of a scroll compressor; a counterweight The weight portion is arranged on the mounting portion and extends to one side of the mounting portion along the axial direction of the mounting hole. The counterweight portion includes: a first arc surface and a second arc surface. The arc surface is arranged away from the installation hole, the cross section of the first arc surface is the first arc segment, and the cross section of the second arc surface is the second arc segment; wherein the center of the circle where the first arc segment is located and/or The center of the second arc segment is spaced from the central axis of the mounting hole.

The balance block provided in the embodiment of the present application includes an installation part and a counterweight part. Specifically, the installation part is provided with an installation hole, and the installation hole is used for installing the crankshaft of the scroll compressor. It can be understood that the scroll compressor includes a crankshaft and a motor, the output end of the motor is connected to the crankshaft, and the mounting portion is sleeved on the outer side of the crankshaft through the mounting hole, so that the crankshaft drives the balance block to rotate under the drive of the motor.

The counterweight part is arranged on the installation part and extends axially along one side of the installation part. It can be understood that the installation part and the counterweight part have an integrated structure, which can ensure the structural strength of the balance block and prolong the service life of the balance block , thereby improving the operation stability and reliability of the scroll compressor with the balance weight. In addition, the integrated structure is also convenient for mass production, thereby reducing the production cost of the balance weight.

Specifically, the scroll compressor further includes a fixed scroll, a suction passage provided on the fixed scroll, a movable scroll and a compression chamber. During the operation of the scroll compressor, the low-temperature refrigerant passes through the suction passage. Entering the compression chamber, the other end of the crankshaft is connected to the movable scroll, so the rotation of the crankshaft can drive the movable scroll to rotate around the fixed scroll, and the volume of the compression chamber is continuously reduced during the rotary motion, thereby increasing. The pressure in the compression chamber to achieve the specified operating conditions. The stationary scroll is also provided with an exhaust port, which is communicated with the compression chamber. The required high-temperature and high-pressure refrigerant gas is discharged into the casing of the scroll compressor through the exhaust port, and then discharged from the scroll through the discharge channel of the casing. The compressor enters the system circulation, which is the working process of the scroll compressor.

By setting a balance weight in the scroll compressor, the vibration problem during the operation of the scroll compressor can be improved. However, during the operation of the scroll compressor, the gas resistance moment received by the balance weight is large, and the balance weight is in the operation process of the scroll compressor. The weight of the entire dynamic and static balance design is large, which leads to an increase in the input power of the scroll compressor, and high-frequency vibration, which affects the energy efficiency of the compressor and the reliability of high-frequency operation.

The counterweight portion includes a first arc surface and a second arc surface, wherein the first arc surface is arranged closer to the installation hole than the second arc surface, and the cross section of the first arc surface is the first arc segment , the cross section of the second arc surface is the second arc segment. The center of the circle where the first arc segment is located and/or the center of the circle where the second arc segment is located has a distance from the central axis of the mounting hole. That is, it is defined that the first circular arc surface and the second circular arc surface are eccentrically arranged relative to the central axis of the installation hole, and the center of the circle where the first circular arc segment is located and/or the center of the second circular arc segment is located between the central axis of the mounting hole. The distance between them is the eccentric distance, so that during the rotation process of the balance block, the gas resistance torque received by 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.

In addition, since the first arc surface and the second arc surface are eccentrically arranged with respect to the central axis of the mounting hole, that is, the center of mass of the counterweight portion is moved outward relative to the mounting portion, thereby effectively reducing the weight of the counterweight in the entire dynamic and static design Therefore, the vibration generated during the operation of the scroll compressor with the balance block 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.

It should be noted that the distance between the center of the first circular arc segment or the second circular arc segment and the central axis of the mounting hole, that is, the eccentric distance should not be too large. Manufacturing difficulty. It can be set according to actual needs.

In addition, the balancing block provided according to the above technical solutions of the present application also has the following additional technical features:

In a possible design, there is a first distance between the center of the circle where the first arc segment is located and the central axis of the mounting hole.

In this design, it is specifically defined that in the counterweight portion, the cross section of the first circular arc surface is a first circular arc segment, and the first circular arc surface is compared with the first circular arc surface disposed close to the mounting hole. The center of the circle where the arc segment is located has a first distance from the central axis of the mounting hole, that is, the eccentric distance of the first circular arc segment relative to the central axis of the mounting hole is defined. That is to say, the center of the first arc segment is eccentric with respect to the central axis of the mounting hole, that is, the gap between the first arc surface and the side wall of the crankshaft of the scroll compressor gradually changes from one end to the other end , so that during the rotation of the balance block, the air flow will flow into the gap between the gradually changing first arc surface and the side wall of the crankshaft of the scroll compressor, which can effectively improve the resistance torque of the gas and reduce the scroll compressor. The input power of the compressor improves the energy efficiency of the scroll compressor.

In addition, since the first arc surface is eccentrically arranged relative to the central axis of the mounting hole, that is, the center of mass of the counterweight portion is moved outward relative to the mounting portion, thereby effectively reducing the weight ratio of the counterweight in the entire dynamic and static design, thereby effectively reducing the The vibration generated during the operation of the scroll compressor with the balance block improves the vibration level of the scroll compressor and improves the reliability of the scroll compressor during high-frequency operation.

It should be noted that the distance between the center of the first circular arc segment and the central axis of the installation hole, that is, the eccentricity should not be too large. If it is too large, the balance block will be deformed, which will increase the manufacturing difficulty of the balance block and increase the balance block. production cost. Therefore, it is necessary to reasonably set the distance between the center of the first circular arc segment and the central axis of the installation hole, so as to improve the energy efficiency and vibration of the compressor, and at the same time reduce the production cost of the balance weight.

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

In this design, the value range of the distance between the center of the first circular arc segment and the central axis of the mounting hole is limited. 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 weight during the rotation process cannot be effectively improved. If the first distance is too large, the balance block will be deformed, the manufacturing difficulty of the balance block will be increased, and the production cost of the balance block will be increased. By making the first distance d and the diameter R of the mounting hole satisfy 2%≤d/R≤20%, the gas resistance torque and vibration problems of the balance block during the rotation process can be effectively improved, and the operation stability of the scroll compressor can be improved. At the same time of improving reliability, the manufacturing difficulty of the balancing weight is reduced, thereby reducing the production cost of the balancing weight.

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

In this design, it is specifically defined that in the counterweight portion, compared with the second circular arc surface that is disposed away from the installation hole, the cross section of the second circular arc surface is a second circular arc segment, and the second circular arc surface is a second circular arc segment. The center of the arc segment and the central axis of the mounting hole have a second distance, that is, the eccentric distance of the second circular arc segment relative to the central axis of the mounting hole is defined. That is to say, the center of the second arc segment is set eccentrically relative to the central axis of the mounting hole, so that the gas resistance moment received during the rotation of the balance block can be reduced, and the center of mass of the counterweight portion can be moved outward relative to the mounting portion. , which can effectively reduce the weight ratio of the balance block in the entire dynamic and static design, 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 scroll compression. reliability during high frequency operation.

It can be understood that the eccentric arrangement of the center of the first circular arc segment relative to the central axis of the installation hole and the eccentric arrangement of the circular center of the second circular arc segment to the central axis of the installation hole can reduce the impact of the balance block during rotation. At the same time, the weight ratio of the balance block in the entire dynamic and static design can be further reduced, so that the vibration generated during the operation of the scroll compressor with the balance block can be effectively reduced, thereby improving the vibration level of the scroll compressor. Improve the reliability of scroll compressors during high frequency operation.

In a possible design, the balance block further includes a windward surface and a leeward surface, the windward surface is respectively connected to one end of the first circular arc surface and the second circular arc surface, and the leeward surface is respectively connected to the first circular arc surface and the second circular arc On the other end of the surface, the weight portion further includes at least two flat surfaces, which are respectively disposed on both sides of the first arc surface and extend to the windward surface and the leeward surface respectively.

In this design, the balance block also includes a windward side and a leeward side. Specifically, during the rotation of the balance block, the surrounding airflow will be driven to move, so that the balance block has a windward side and a leeward side arranged along the rotation direction. The windward surface is respectively connected to one end of the first circular arc surface and the second circular arc surface, and the leeward surface is respectively connected to the other end of the first circular arc surface and the second circular arc surface. It is defined that the counterweight part also includes at least two planes, specifically, the at least two planes are respectively arranged on both sides of the first arc surface and extend to the windward side and the leeward side respectively, that is to say, between the windward side and the leeward side. The first arc surfaces are connected by at least one plane, and the leeward surface and the first arc surface are connected by at least one plane, that is, a side wall of the counterweight portion close to the mounting hole includes an arc surface and at least two A plane is formed, so that the gap between one side wall of the counterweight portion close to the mounting hole and the side wall of the crankshaft of the scroll compressor gradually changes from one end to the other end. Furthermore, during the rotation of the balance block, the airflow will flow into the gradually changing gap, which can reduce the resistance torque of the improved gas, reduce the input power of the scroll compressor, and improve the energy efficiency of the scroll compressor.

In addition, by extending at least two planes to the windward side and the leeward side respectively, the area of the windward side and the leeward side can be reduced, and the gas resistance moment received during the rotation of the balance weight can be further reduced. And compared with the related art in which the inner and outer circles of the counterweight part are arranged concentrically with the installation hole, one side wall of the counterweight part close to the installation hole includes an arc surface and at least two planes, which can reduce the balance weight to a certain extent. The weight of the scroll compressor further improves the vibration level during the operation of the scroll compressor.

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

In this design, the included angle α between the plane where the windward surface is located or the tangent surface of any point on the windward surface and the plane where the leeward surface is located or the tangent surface of any point on the leeward surface is defined to satisfy 0°<α<180°. Specifically, the windward surface may be a flat surface or a curved surface, and the leeward surface may be a flat surface or a curved surface, which may be set according to actual needs. Wherein, setting the windward surface and the leeward surface as planes can further reduce the gas resistance moment received during the rotation of the balance block, reduce the input power of the scroll compressor, and improve the energy efficiency of the scroll compressor. By setting the angle α between the plane where the windward side is located or the tangent plane of any point on the windward side and the plane where the leeward side is located or the tangent plane of any point on the leeward side to satisfy 0°<α<180°, the windward side and the leeward side are inclined to be set , which can further reduce the gas resistance torque received during the rotation of the balance block, reduce the input power of the scroll compressor, and improve the energy efficiency of the scroll compressor.

In a possible design, the hole wall of the installation hole includes a first hole wall and a second hole wall, and any point on the second hole wall is set closer to the first arc surface than the first hole wall, wherein after the installation The center axis of the hole, and the plane perpendicular to the center plane of the second hole wall is the reference plane, and the plane where the windward surface is located or the tangent plane of any point on the windward surface has an included angle β with the reference plane; and the plane where the leeward side is located Or there is an included angle γ between the tangent plane at any point on the leeward side and the reference plane.

In this design, the hole wall of the mounting hole includes a first hole wall and a second hole wall, wherein any point on the second hole wall is set closer to the first arc surface than the first hole wall, that is, the The mounting hole is equally divided into a second hole wall close to the first arc surface and a first hole wall away from the first arc surface. The central axis of the mounting hole and the plane perpendicular to the central plane of the second hole wall are set as the reference plane, and the reference plane is also the dividing plane of the first hole wall and the second hole wall.

Specifically, there is an included angle β between the plane where the windward surface is located or the tangent plane of any point on the windward surface and the reference plane, and there is an included angle γ between the plane where the leeward surface is located or the tangent plane of any point on the leeward surface and 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 surface are specifically limited, thereby further reducing the gas resistance moment received during the rotation of the balance block, reducing the input power of the scroll compressor, and improving the energy efficiency of the scroll compressor.

It can be understood that the inclination angle of the windward side and the leeward side should not be too large, and if it is too large, it will not be able to reduce the gas resistance moment, and it should not be too small, and it will not be able to reduce the gas resistance moment. , By limiting the inclination angle of the windward surface and the leeward surface, the gas resistance moment 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.

In a possible design, the included angle β and the included angle γ are arranged symmetrically with respect to the center plane of the second hole wall.

In this design, the included angle β and the included angle γ are defined to be symmetrically arranged with respect to the center plane of the second hole wall, which can effectively reduce the gas resistance moment received during the rotation of the balance weight and reduce the input power of the scroll compressor. , While improving the energy efficiency of the scroll compressor, it ensures the balance effect of the balance block.

In a possible design, the counterweight portion further includes a top wall surface, and the top wall surface is connected with the first arc surface and the second arc surface; the balance block further includes a first cut surface, and the first cut surface is arranged between the top wall surface and the second arc surface. Connection on the windward side.

In this design, it is defined that the counterweight portion further includes a top wall surface, and the balance block further includes a first cut surface. The side of the heavy part away from the installation part. By providing the first cut surface at the connection between the top wall surface and the windward surface, it can be understood that the first cut surface is inclined in the direction 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 during the operation of the scroll compressor with the balance block can be improved, and the reliability of the scroll compressor in high frequency operation can be improved. On the other hand, the area of the windward surface is further reduced, which can further reduce the gas resistance moment received during the operation of the balance block, reduce the input power of the scroll compressor, and improve the energy efficiency of the scroll compressor.

In a possible design, the balance weight further includes a second cut surface, and the second cut surface is disposed at the connection between the top wall surface and the leeward surface.

In this design, it is defined that the balance weight also includes a second cut surface. Specifically, the second cut surface is provided at the connection between the top wall surface and the leeward surface, that is, except that the first cut surface is provided at the connection between the top wall surface and the windward surface. In addition to the tangential plane, a second tangential plane is also provided at the connection between the leeward surface and the top wall surface. It can be understood that the second tangent plane is inclined in the direction from the top wall surface to the leeward surface. On the one hand, the weight of the balance block can be further reduced while the gas resistance moment received during the operation of the balance block can be further reduced, the vibration level of the scroll compressor with the balance block during the operation process can be improved, and the scroll compression can be improved. The reliability of the high frequency operation of the machine. On the other hand, setting the first cut plane and the second cut plane on the left and right sides of the balance block can prevent the center of mass of the balance block from shifting and ensure the balance effect of the balance block.

In a possible design, the first tangent plane and the second tangent plane are arranged symmetrically with respect to the center plane of the second hole wall.

In this design, the first tangent plane and the second tangent plane are defined to be symmetrically arranged with respect to the center plane of the second hole wall, so as to further reduce the gas resistance moment received during the operation of the balance weight and reduce the weight of the balance weight , improving the vibration level of the scroll compressor with the balance block during the operation process, improving the high-frequency operation reliability of the scroll compressor, and ensuring the balance effect of the balance block. In addition, the processing difficulty of the balancing weight can be reduced, the processing efficiency of the balancing weight can be improved, and the production cost of the balancing weight can be reduced.

In a possible design, the balance weight further includes a through hole, and the through hole is provided through from the windward surface to the second arc surface.

In this design, it is defined that the balance weight further includes a through hole, and specifically, the through hole is provided through from the windward surface to the second arc surface. It can be understood that the through-flow hole communicates with the inner space of the housing. By arranging through-flow holes from the windward surface to the second arc surface, part of the air flow can enter from the through-flow holes during the rotation of the balance block, thereby further reducing the amount of air that the balance block receives during the rotation process. The gas resistance torque reduces the input power of the scroll compressor and further improves the energy efficiency of the scroll compressor.

In addition, by opening the through holes, the weight of the balance weight can be further reduced, and the vibration level during the operation of the scroll compressor can be improved.

It can be understood that the number of through-flow holes can be provided in multiples, and the plurality of through-flow holes can further reduce the gas resistance torque received during the rotation of the balance weight. However, the number of through-flow holes should not be too large. Too much will reduce the structural strength of the balance block, resulting in a reduction in the service life of the balance block. The specific number of through holes can be set according to actual needs.

According to the second aspect of the present application, a scroll compressor is provided, which includes the balance block provided by any of the above technical solutions, and thus has all the beneficial technical effects of the balance block, which will not be repeated here.

Further, the scroll compressor also includes a crankshaft and a driving part, wherein the crankshaft is located in the mounting hole of the balance weight, the driving part is connected with the crankshaft, the driving part can drive the crankshaft to rotate, and the crankshaft rotation can drive the balance weight to rotate.

The driving part includes a motor, the output end of the motor is connected with the crankshaft, and the installation part is sleeved on the outer side of the crankshaft through the installation hole, so that the crankshaft drives the balance block to rotate under the driving of the motor.

According to a third aspect of the present application, an air conditioner is provided, which includes the scroll compressor provided by any of the above technical solutions, and thus has all the beneficial technical effects of the scroll compressor, which will not be repeated here.

Additional aspects and advantages in accordance with the present application will be presented in the description section that follows, in part will be apparent from the description below, or learned by practice of the application.

Description of drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily understood from the following description of embodiments in conjunction with the accompanying drawings, wherein:

FIG. 1 shows one of the schematic structural diagrams of a balancing block according to an embodiment of the present application;

FIG. 2 shows the second schematic diagram of the structure of a balance block according to an embodiment of the present application;

Fig. 3 shows the third schematic diagram of the structure of a balance block according to an embodiment of the present application;

FIG. 4 shows the fourth schematic diagram of the structure of the balance block according to an embodiment of the present application;

Fig. 5 shows the fifth schematic diagram of the structure of the balance block according to an embodiment of the present application;

Fig. 6 shows the sixth schematic diagram of the structure of the balance block according to an embodiment of the present application;

FIG. 7 shows the seventh schematic diagram of the structure of a balance block according to an embodiment of the present application.

Among them, the corresponding relationship between the reference numerals and the component names in Fig. 1 to Fig. 7 is:

100 balance weight, 110 mounting part, 111 mounting hole, 1111 first hole wall, 1112 second hole wall, 120 counterweight part, 121 first arc surface, 122 second arc surface, 123 plane, 124 top wall, 130 windward side, 140 leeward side, 150 reference plane, 160 center plane of the second hole wall, 170 first section plane, 180 second section plane, 190 flow hole.

Detailed ways

In order to more clearly understand the above objects, 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 may be combined with each other in the case of no conflict.

Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific implementation disclosed below. example limitations.

The balance weight 100 , the scroll compressor and the air conditioner provided according to some embodiments of the present application are described below with reference to FIGS. 1 to 7 .

Example 1:

As shown in FIG. 1 , FIG. 2 , FIG. 3 , FIG. 4 , FIG. 5 , FIG. 6 and FIG. 7 , an embodiment of the first aspect of the present application provides a balance weight 100 , and the balance weight 100 includes: an installation portion 110 , The mounting portion 110 is provided with a mounting hole 111 , and the mounting hole 111 is used for mounting the crankshaft of the scroll compressor; , the weight portion 120 includes: a first arc surface 121 and a second arc surface 122 , the second arc surface 122 is disposed farther from the mounting hole 111 than the first arc surface 121 , and the transverse direction of the first arc surface 121 is The cross section is the first circular arc segment, and the cross section of the second circular arc surface 122 is the second circular arc segment; wherein, the center of the circle where the first circular arc segment is located and/or the center of the circle where the second circular arc segment is located and the distance between the mounting hole 111 The central axis has a spacing.

The balance weight 100 provided in the embodiment of the present application includes a mounting portion 110 and a counterweight portion 120 . Specifically, the mounting portion 110 is provided with a mounting hole 111 , and the mounting hole 111 is used for mounting a crankshaft of a scroll compressor. It can be understood that the scroll compressor includes a crankshaft and a motor, the output end of the motor is connected to the crankshaft, and the mounting portion 110 is sleeved on the outer side 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.

The counterweight portion 120 is disposed on the mounting portion 110 and extends axially along one side of the mounting portion 110. It can be understood that the mounting portion 110 and the counterweight portion 120 have an integral structure, thereby ensuring the structural strength of the balance weight 100. The service life of the balance weight 100 is prolonged, thereby improving the operation stability and reliability of the scroll compressor with the balance weight 100 . In addition, the integrated structure also facilitates mass production, thereby reducing the production cost of the balance weight 100 .

By arranging the balance weight 100 in the scroll compressor, the vibration problem during the operation of the scroll compressor can be improved. However, during the operation of the scroll compressor, the gas resistance moment received by the balance weight 100 is relatively large, and the balance The weight of the block 100 is relatively large in the entire dynamic and static balance design, which leads to an increase in the input power of the scroll compressor and large high-frequency vibration, which affects the energy efficiency of the compressor and the reliability of high-frequency operation.

The weight portion 120 includes a first arc surface 121 and a second arc surface 122 , wherein the first arc surface 121 is disposed closer to the mounting hole 111 than the second arc surface 122 , and the first arc surface 121 is The cross section is the first arc segment, and the cross section of the second arc surface 122 is the second arc segment. The center of the first arc segment and/or the center of the second arc segment is spaced from the central axis of the mounting hole 111 . That is, it defines that the first circular arc surface 121 and the second circular arc surface 122 are eccentrically arranged with respect to the central axis of the mounting hole 111 , and the center of the first circular arc segment and/or the center of the second circular arc segment and the mounting hole 111 The distance between the central axes of the two is the eccentric distance, so that during the rotation process of the balance block 100, 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, since the first arc surface 121 and the second arc surface 122 are eccentrically arranged relative to the central axis of the mounting hole 111 , that is, the center of mass of the counterweight portion 120 is moved outward relative to the mounting portion 110 , thereby effectively reducing the weight of the balance weight 100 The weight ratio in the entire dynamic and static design can effectively reduce the vibration generated during the operation of the scroll compressor with the balance block 100, thereby improving the vibration level of the scroll compressor and improving the scroll compressor during high-frequency operation. reliability.

It should be noted that the distance between the center of the first circular arc segment or the second circular arc segment and the central axis of the mounting hole 111 , that is, the eccentric distance should not be too large. If too large, the balance block 100 will be deformed and the balance will be increased. Manufacturing difficulty of block 100. It can be set according to actual needs.

As shown in FIG. 1 , FIG. 3 and FIG. 5 , in a specific embodiment, further, the center of the circle where the first circular arc segment is located has a first distance from the central axis of the installation hole 111 .

In this embodiment, in the counterweight portion 120 , the cross section of the first arc surface 121 is a first circle compared to the first arc surface 121 disposed near the mounting hole 111 with the second arc surface 122 . The arc segment, the center of the first arc segment and the central axis of the mounting hole 111 has a first distance, that is, the eccentric distance of the first circular arc segment relative to the central axis of the mounting hole 111 is defined. That is to say, the center of the first circular arc segment is eccentric with respect to the central axis of the mounting hole 111 , that is, the gap between the first circular arc surface 121 and the side wall of the crankshaft of the scroll compressor, from one end to the other end change gradually, so that during the rotation of the balance block 100, the air flow will flow into the gap between the gradually changing first arc surface 121 and the side wall of the crankshaft of the scroll compressor, thereby effectively improving the resistance torque of the gas and reducing the The input power of the scroll compressor improves the energy efficiency of the scroll compressor.

In addition, since the first arc surface 121 is eccentrically arranged with respect to the central axis of the mounting hole 111, that is, the center of mass of the counterweight portion 120 is moved outward relative to the mounting portion 110, thereby effectively reducing the weight of the balance weight 100 in the entire dynamic and static design Therefore, the vibration generated during the 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.

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 , that is, the eccentricity should not be too large. If the eccentricity is too large, the balance block 100 will be deformed, and the manufacturing difficulty of the balance block 100 will be increased. Increase the production cost of the balance weight 100. Therefore, the distance between the center of the first circular arc segment and the central axis of the installation hole 111 needs to be reasonably set to reduce the production cost of the balance weight 100 while improving the energy efficiency and vibration of the compressor.

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

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 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 that the balance weight 100 receives during the rotation process cannot be effectively improved. If the first distance is too large, the balance weight 100 will be deformed, which increases the manufacturing difficulty of the balance weight 100 and increases the production cost of the balance weight 100 . By making the first distance d and the diameter R of the installation hole 111 satisfy 2%≤d/R≤20%, the gas resistance torque and vibration problems of the balance weight 100 during the rotation process can be effectively improved, and the operation of the scroll compressor can be improved. At the same time of stability and reliability, the manufacturing difficulty of the balance weight 100 is reduced, thereby reducing the production cost of the balance weight 100 .

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 diameter R of the mounting hole 111 satisfy 2%≤D/ R≤20%.

In this embodiment, it is specifically defined that in the counterweight portion 120 , the cross section of the second circular arc surface 122 is a second circular arc compared to the second circular arc surface 122 disposed away from the mounting hole 111 by the first circular arc surface 121 . The arc segment, the center of the second arc segment and the central axis of the mounting hole 111 has a second distance, that is, the eccentric distance of the second circular arc segment relative to the central axis of the mounting hole 111 is defined. That is to say, the center of the second arc segment is eccentric with respect to the central axis of the installation hole 111 , so that the gas resistance moment received during the rotation of the balance weight 100 can be reduced, and the center of mass of the weight portion 120 can be adjusted relative to the installation hole 111 . The part 110 is moved outward, which can effectively reduce the weight ratio of the balance weight 100 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 weight 100, thereby improving the scroll compressor vibration. This improves the reliability of the scroll compressor during high-frequency operation.

It can be understood that the center of the circle where the first arc segment is located is eccentric with respect to the central axis of the mounting hole 111 and the center of the circle where the second arc segment is located is eccentric with respect to the central axis of the mounting hole 111 , which can reduce the rotation of the balance weight 100 . In addition to the gas resistance moment received during the process, the weight ratio of the balance block 100 in the entire dynamic and static design is further reduced, so that the vibration generated during the operation of the scroll compressor with the balance block 100 can be effectively reduced, thereby improving the scroll compression. The vibration level of the compressor is improved, and the reliability of the scroll compressor during high frequency operation is improved.

Embodiment 2:

As shown in FIG. 1 , FIG. 2 , FIG. 3 , FIG. 4 , FIG. 5 , FIG. 6 and FIG. 7 , on the basis of any of the above embodiments, the balance block 100 further includes a windward surface 130 and a leeward surface 140 , The windward surface 130 is respectively connected to one end of the first circular arc surface 121 and the second circular arc surface 122, the leeward surface 140 is respectively connected to the other end of the first circular arc surface 121 and the second circular arc surface 122, and the counterweight portion 120 further includes at least Two planes 123 , at least two planes 123 are respectively disposed on both sides of the first arc surface 121 and extend to the windward surface 130 and the leeward surface 140 respectively.

In this embodiment, the balance weight 100 further includes a windward surface 130 and a leeward surface 140. Specifically, during the rotation process of the balance weight 100, the surrounding airflow will be driven to move, so that the balance weight 100 has a windward surface arranged along the rotation direction. 130 and 140 on the leeward side. The windward surface 130 is respectively connected to one end of the first circular arc surface 121 and the second circular arc surface 122 , and the leeward surface 140 is respectively connected to the other end of the first circular arc surface 121 and the second circular arc surface 122 . It is defined that the counterweight portion 120 further includes at least two flat surfaces 123 , specifically, the at least two flat surfaces 123 are respectively disposed on both sides of the first arc surface 121 and extend to the windward surface 130 and the leeward surface 140 respectively, that is, That is, the connection between the windward surface 130 and the first arc surface 121 is through at least one plane 123, and between the leeward surface 140 and the first arc surface 121 through at least one plane 123, that is, the counterweight portion 120 is installed close to One side wall of the hole 111 includes an arc surface and at least two flat surfaces 123, so that the counterweight portion 120 is close to the gap between one side wall of the mounting hole 111 and the side wall of the scroll compressor crankshaft, from one end to the other. One end changes gradually. Furthermore, during the rotation of the balance block 100, the airflow will flow into the gradually changing gap, which can reduce the resistance torque of the improved gas, reduce the input power of the scroll compressor, and improve the energy efficiency of the scroll compressor.

In addition, by extending at least two planes 123 to the windward surface 130 and the leeward surface 140 respectively, the area of the windward surface 130 and the leeward surface 140 can be reduced, and the gas resistance moment received during the rotation of the balance weight 100 can be further reduced. And compared with the related art in which the inner and outer circles of the counterweight portion 120 are arranged concentrically with the mounting hole 111, a side wall of the counterweight portion 120 close to the mounting hole 111 includes an arc surface and at least two flat surfaces 123, which can be used to a certain extent. Therefore, the weight of the balance weight 100 is greatly reduced, and the vibration level during the operation of the scroll compressor is further improved.

Embodiment three:

As shown in FIG. 5 , on the basis of any of the above embodiments, further, between the plane where the windward surface 130 is located or the tangent plane of any point on the windward surface 130 and the plane where the leeward surface 140 is located or the tangent plane of any point on the leeward surface 140 The included angle α satisfies 0°<α<180°.

In this embodiment, the included angle α between the plane where the windward surface 130 is located or the tangent of any point of the windward surface 130 and the plane where the leeward surface 140 is located or the tangent of any point of the leeward surface 140 is defined to satisfy 0°<α<180 °. Specifically, the windward surface 130 may be a flat surface or a curved surface, and the leeward surface 140 may be a flat surface or a curved surface, which may be set according to actual needs. Wherein, setting the windward surface 130 and the leeward surface 140 as planes can further reduce the gas resistance moment received during the rotation of the balance block 100, reduce the input power of the scroll compressor, and improve the energy efficiency of the scroll compressor. By making the included angle α between the plane where the windward surface 130 is located or the tangent plane of any point of the windward surface 130 and the plane where the leeward surface 140 is located or the tangent plane of any point of the leeward surface 140 satisfies 0°<α<180°, the windward side 130 In addition, the leeward surface 140 is inclined and arranged, which can further reduce the gas resistance moment received by the balance block 100 during the rotation process, reduce the input power of the scroll compressor, and improve the energy efficiency of the scroll compressor.

As shown in FIG. 5 , on the basis of the above embodiment, further, the hole wall of the mounting hole 111 includes a first hole wall 1111 and a second hole wall 1112 , and any point on the second hole wall 1112 is compared with the first hole wall. The wall 1111 is disposed close to the first arc surface 121, wherein the plane passing through the central axis of the mounting hole 111 and perpendicular to the central plane 160 of the second hole wall is the reference plane 150, and the plane or the windward surface 130 where the windward surface 130 is located There is an included angle β between the tangent plane at any point and the reference plane 150 ; and an included angle γ between the plane where the leeward plane 140 is located or the tangent plane at any point on the leeward plane 140 and the reference plane 150 .

In this embodiment, the hole wall of the mounting hole 111 includes a first hole wall 1111 and a second hole wall 1112 , wherein any point on the second hole wall 1112 is closer to the first arc surface 121 than the first hole wall 1111 It is arranged, that is to say, the mounting hole 111 is equally divided into a second hole wall 1112 close to the first arc surface 121 and a first hole wall 1111 away from the first arc surface 121 . 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 set as the reference plane 150, and the reference plane 150 is also the dividing plane of the first hole wall 1111 and the second hole wall 1112.

Specifically, there is an included angle β between the plane where the windward surface 130 is located or the tangent plane of any point on the windward surface 130 and the reference plane 150 , and the plane where the leeward surface 140 is located or the tangent plane of any point on the leeward surface 140 and the reference plane 150 has an angle β The included angle γ, where the included angle β satisfies 3°≤β≤25°, and the included angle γ satisfies 3°≤γ≤25°. That is to say, the inclination angles of the windward surface 130 and the leeward surface 140 relative to the reference surface 150 are specifically defined, so that the gas resistance moment received during the rotation of the balance block 100 can be further reduced, the input power of the scroll compressor can be reduced, and the scroll compression can be improved. energy efficiency of the machine.

It can be understood that the inclination angle of the windward surface 130 and the leeward surface 140 should not be too large, and if too large, the effect of reducing the gas resistance moment cannot be achieved, and it should not be too small, and too small can not reduce the gas resistance moment. By limiting the inclination angle between the windward surface 130 and the leeward surface 140, the gas resistance moment received during the rotation of 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.

It should be noted that, as shown in FIG. 5 , the plane on which the orthographic projection of the balance weight 100 is perpendicular to the horizontal reference line is the reference plane 150 . The vertical center line and the reference line are perpendicular to each other, and the surface on which the vertical center line is perpendicular to the orthographic projection of the balance block 100 is the center surface 160 of the second hole wall.

In a specific embodiment, further, the included angle β and the included angle γ are arranged symmetrically with respect to the central plane 160 of the second hole wall.

In this embodiment, the included angle β and the included angle γ are defined to be symmetrically arranged with respect to the central plane 160 of the second hole wall, which can effectively reduce the gas resistance moment received by the balance block 100 during the rotation process and reduce the friction of the scroll compressor. Input power, improve the energy efficiency of the scroll compressor, and ensure the balance effect of the balance block 100.

Embodiment 4:

As shown in FIGS. 3 and 4 , on the basis of any of the above-mentioned embodiments, the counterweight portion 120 further includes a top wall surface 124 , and the top wall surface 124 is connected to the first arc surface 121 and the second arc surface 122 ; The balance block 100 also includes a first section 170 , the first section 170 is provided at the connection between the top wall surface 124 and the windward surface 130 .

In this embodiment, it is defined that the weight portion 120 further includes a top wall surface 124, and the balance weight 100 further includes a first section surface 170. Specifically, the top wall surface 124 is respectively connected with the first arc surface 121 and the second arc surface 122 is connected, and the top wall surface 124 is a side surface of the counterweight portion 120 away from the mounting portion 110 . By providing the first cut surface 170 at the connection between the top wall surface 124 and the windward surface 130 , it can be understood that the first cut surface 170 is inclined in the direction from the top wall surface 124 to the windward surface 130 . On the one hand, the weight of the balance weight 100 can be further reduced, the vibration level during the operation of the scroll compressor having the balance weight 100 can be improved, and the reliability of the scroll compressor in high frequency operation can be improved. On the other hand, further reducing the area of the windward surface 130 can further reduce the gas resistance moment received by the balance block 100 during operation, reduce the input power of the scroll compressor, and improve the energy efficiency of the scroll compressor.

As shown in FIGS. 3 and 4 , on the basis of the above embodiment, the balance block 100 further includes a second cut surface 180 , and the second cut surface 180 is disposed at the connection between the top wall surface 124 and the leeward surface 140 .

In this embodiment, it is defined that the balance weight 100 further includes a second cut surface 180 . Specifically, the second cut surface 180 is provided at the connection between the top wall surface 124 and the leeward surface 140 , that is, except at the top wall surface 124 and the windward surface. In addition to the first cut surface 170 at the connection of the surface 130, a second cut surface 180 is also set at the connection between the leeward surface 140 and the top wall surface 124. It can be understood that from the top wall surface 124 to the leeward surface 140, the second cut surface The cut plane 180 is set obliquely. On the one hand, the weight of the balance weight 100 can be further reduced while the gas resistance moment received during the operation of the balance weight 100 can be further reduced, the vibration level of the scroll compressor with the balance weight 100 during the operation process can be improved, and the Reliability of scroll compressors for high frequency operation. On the other hand, setting the first tangent plane 170 and the second tangent plane 180 on the left and right sides of the balance block 100 can prevent the center of mass of the balance block 100 from shifting and ensure the balance effect of the balance block 100 .

In a specific embodiment, further, the first cut plane 170 and the second cut plane 180 are symmetrically arranged with respect to the central plane 160 of the second hole wall.

In this embodiment, the first tangent plane 170 and the second tangent plane 180 are defined to be symmetrically arranged with respect to the central plane 160 of the second hole wall, so that the gas resistance moment received by the balance weight 100 during the operation process can be further reduced, reducing the The weight of the balance block 100 improves the vibration level during the operation of the scroll compressor with the balance block 100 , improves the high frequency operation reliability of the scroll compressor, and ensures the balance effect of the balance block 100 . In addition, the processing difficulty of the balance weight 100 can also be reduced, the processing efficiency of the balance weight 100 can be improved, and the production cost of the balance weight 100 can be reduced.

As shown in FIG. 1 , in a specific embodiment, the center of the circle where the first arc segment is located is eccentric with respect to the central axis of the mounting hole 111 , and the two planes 123 are respectively connected to both sides of the first arc surface 121 , and The two planes 123 extend to the windward face 130 and the leeward face 140 respectively, and the windward face 130 and the leeward face 140 are inclined. The balance block 100 set above and the main balance block with the inner and outer circles of the counterweight portion 120 and the central circle of the crankshaft set concentrically in the related art are tested for the input power of the scroll compressor under different operating frequencies, as shown in Table 1 and Table 2. Show.

Table 1 The improvement effect of the technical solution in Figure 1 on the input power in the ARI30～140Hz working condition

Table 2 The improvement effect of the technical solution in Figure 1 on the high-frequency vibration in the ARI30～140Hz working condition

It can be clearly seen from Table 1 and Table 2 that by setting the center of the circle where the first arc segment is located eccentrically with respect to the central axis of the mounting hole 111, and setting the windward surface 130 and the leeward surface 140 as the plane 123 and tilting, it is possible to The gas resistance moment received by the balance block 100 is effectively reduced, the input power of the scroll compressor is reduced, and the energy efficiency of the scroll compressor is improved. Moreover, the vibration generated during the operation of the scroll compressor with the balance block 100 can also be effectively reduced, thereby improving the vibration level of the scroll compressor and improving the reliability of the scroll compressor during high-frequency operation.

Embodiment 5:

As shown in FIG. 7 , on the basis of any of the above-mentioned embodiments, the balance block 100 further includes a through hole 190 , and the through hole 190 is provided through from the windward surface 130 to the second arc surface.

In this embodiment, it is defined that the balance weight 100 further includes a through hole 190 . Specifically, the through hole 190 is provided through from the windward surface 130 to the second arc surface. It can be understood that the through hole 190 communicates with the inner space of the housing. By arranging the through-flow holes 190 from the windward surface 130 to the second arc surface, part of the airflow can enter from the through-flow holes 190 during the rotation of the balance weight 100 , thereby further reducing the flow rate of the balance weight 100 . The gas resistance torque received during the rotation process reduces the input power of the scroll compressor and further improves the energy efficiency of the scroll compressor.

In addition, by opening the through holes 190, the weight of the balance weight 100 can be further reduced, and the vibration level during the operation of the scroll compressor can be improved.

It can be understood that the number of the through holes 190 can be provided in multiples, and the plurality of through holes 190 can further reduce the gas resistance torque received during the rotation of the balance weight 100 . However, the number of the through holes 190 should not be too large, because too much will reduce the structural strength of the balance weight 100 , resulting in a reduction in the service life of the balance weight 100 . The specific number of the through holes 190 can be set according to actual needs.

Embodiment 6:

According to the second aspect of the present application, a scroll compressor is provided, which includes the balance weight 100 provided in any of the above embodiments, and thus has all the beneficial technical effects of the balance weight 100 , which will not be repeated here.

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

The driving part includes a motor, the output end of the motor is connected to the crankshaft, and the mounting part 110 is 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.

Embodiment 7:

According to a third aspect of the present application, an air conditioner is provided, which includes the scroll compressor provided in any of the above embodiments, and thus has all the beneficial technical effects of the scroll compressor, which will not be repeated here.

In the description of this specification, the terms "connected", "installed", "fixed", etc. should be understood in a broad sense, for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; Directly connected or indirectly connected through an intermediary. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiment", etc. means that a particular feature, structure, material or characteristic described in connection with the embodiment or example is included in this application at least one embodiment or example of . In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or instance. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above are only preferred embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims

A balance block, which includes:

an installation part, wherein the installation part is provided with an installation hole, and the installation hole is used for installing the crankshaft of the scroll compressor;

The counterweight part is arranged on the installation part and extends to one side of the installation part along the axial direction of the installation hole, and the counterweight part includes:

A first circular arc surface and a second circular arc surface, the second circular arc surface is farther away from the installation hole than the first circular arc surface, and the cross section of the first circular arc surface is a first circular arc segment, the cross section of the second arc surface is the second arc segment;

Wherein, the center of the circle where the first arc segment is located and/or the center of the circle where the second arc segment is located has a distance from the central axis of the mounting hole.
The balance weight of claim 1, wherein,

The center of the first circular arc segment and the central axis of the mounting hole have a first distance.
The balancing weight of claim 2, wherein,

The first distance d and the diameter R of the mounting hole satisfy 2%≤d/R≤20%.
The balance weight of claim 1, wherein,

The center of the second circular arc segment is located at a second distance from the central axis of the mounting hole;

Wherein, the second distance D and the diameter R of the mounting hole satisfy 2%≤D/R≤20%.
The balance weight according to any one of claims 1 to 4, wherein the balance weight further comprises a windward surface and a leeward surface, and the windward surface respectively connects the first arc surface and the second arc One end of the surface, the leeward surface is respectively connected to the other end of the first arc surface and the second arc surface, and the counterweight portion also includes:

At least two planes, at least two of the planes are respectively disposed on both sides of the first arc surface and extend to the windward surface and the leeward surface respectively.
The balancing weight of claim 5, wherein,

The included angle α between the plane where the windward surface is located or the tangent plane of any point on the windward surface and the plane where the leeward surface is located or the tangent plane of any point on the leeward surface satisfies 0°<α<180°.
The balance weight according to claim 6, wherein the hole wall of the mounting hole comprises:

the first hole wall;

a second hole wall, any point on the second hole wall is disposed closer to the first arc surface than the first hole wall;

The plane passing through the central axis of the installation hole and perpendicular to the central plane of the second hole wall is the reference plane, and the plane on which the windward surface is located or the tangent plane of any point of the windward surface and the reference plane. have an angle β between them; and

There is an included angle γ between the plane where the leeward surface is located or the tangent plane of any point of the leeward surface and the reference plane.
The weight of claim 7, wherein,

The included angle β and the included angle γ are symmetrically arranged with respect to the center plane of the second hole wall.
The weight of claim 7, wherein,

The weight portion also includes:

a top wall surface, connected with the first arc surface and the second arc surface;

The balance block also includes:

The first section is arranged at the connection between the top wall surface and the windward surface.
The balancing weight of claim 9, wherein the balancing weight further comprises:

The second cut surface is arranged at the connection between the top wall surface and the leeward surface.
The weight of claim 10, wherein,

The first cut plane and the second cut plane are symmetrically arranged with respect to the center plane of the second hole wall.
The balancing weight of claim 5, wherein the balancing weight further comprises:

The through-flow hole is provided through from the windward surface to the second arc surface.
A scroll compressor, comprising:

The balance block of any one of claims 1 to 12;

a crankshaft, located in the mounting hole of the balance weight;

The driving part is connected with the crankshaft, the driving part can drive the crankshaft to rotate, and the crankshaft rotation can drive the balance weight to rotate.
An air conditioner comprising the scroll compressor of claim 13 .