Rotary compressor and refrigeration equipment

Abstract

The utility model discloses a rotary compressor and refrigeration equipment, the rotary compressor comprises: a motor, the motor comprises a stator and a rotor, the rotor is installed in the stator, the stator comprises a stator iron core and a stator winding, the stator iron core comprises a yoke part and a plurality of tooth parts, the yoke part is annular, two adjacent tooth parts and the yoke part jointly define a stator groove, and the stator winding is installed in the stator iron core. The stator winding is arranged in the stator slot; the pump body structure comprises a crankshaft, a first bearing and an air cylinder, one end of the crankshaft is connected with the rotor, the other end of the crankshaft sequentially and rotatably penetrates through the first bearing and the air cylinder, the other end of the crankshaft is connected with an eccentric part in the air cylinder, the number of the stator grooves is Q, the pole number of the rotor is P, the axial height of the first bearing is H, the diameter of the crankshaft is d, and GCD (Q, P) is smaller than P; p) is the largest common divisor of Q and P; wherein N is larger than or equal to 5 and equal to GCD (Q, P) smaller than or equal to 6, and # imgabs0. According to the rotary compressor provided by the embodiment of the utility model, the efficiency of the rotary compressor can be improved by reasonably setting the axial height of the first bearing and the diameter of the crankshaft.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, in particular to a rotary compressor and a refrigeration device having the rotary compressor. Background Art

[0002] In recent years, the air conditioning industry has continuously increased its requirements for energy conservation and environmental protection. As a core component in air conditioning systems, compressors can achieve energy conservation by improving their efficiency. The pump body and permanent magnet motor, as key components of a compressor, significantly impact its energy efficiency.

[0003] The operating principle of existing rotary compressors is as follows: When the motor stator is energized, it generates a magnetic field. The rotor component rotates under the influence of this magnetic field, driving the pump crankshaft to rotate together. The crankshaft rotation drives the piston mounted on its eccentric portion to perform eccentric circular motion within the cylinder. Furthermore, bearings are provided at both ends of the cylinder to seal the cylinder and support the crankshaft. When the rotor is thick or has a large moment of inertia, if the upper bearing height is not set properly, the crankshaft winding will increase, which means that the crankshaft is prone to deflection and wear of the crankshaft and upper bearing. This reduces the performance of the rotary compressor and affects the reliability of the rotary compressor. There is room for improvement. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a rotary compressor that can achieve a compression function and improve the reliability of gas compression. The efficiency and operational reliability of the rotary compressor can be effectively improved by properly setting the axial height of the first bearing and the diameter of the crankshaft.

[0005] According to an embodiment of the present invention, a rotary compressor includes: a motor, the motor includes a stator and a rotor, the rotor is installed in the stator, the stator includes a stator core and a stator winding, the stator core includes a yoke and a plurality of teeth, the yoke is annular, the plurality of teeth are spaced apart and distributed in the circumferential direction of the yoke, two adjacent teeth together with the yoke define a stator slot, and the stator winding is arranged in the stator slot; a pump body structure, the pump body structure includes a crankshaft, a first bearing and a cylinder, one end of the crankshaft is connected to the rotor and the other end is rotatably passed through the first bearing and the cylinder in turn, the other end of the crankshaft is connected to the eccentric member in the cylinder, the number of the stator slots is Q, the number of poles of the rotor is P, the axial height of the first bearing is H, and the diameter of the crankshaft is d, GCD(Q,P) is the greatest common divisor of Q and P; wherein: 5≤N=GCD(Q,P)≤6 is satisfied,

[0006] According to the rotary compressor of the embodiment of the present invention, a motor is provided to provide a driving force for the crankshaft, so that the crankshaft can drive the eccentric to move to compress the gas, thereby realizing the compression function of the rotary compressor. In addition, a first bearing is provided on the outer side of the crankshaft, and the cylinder can be sealed by the first bearing to improve the reliability of gas compression. The crankshaft can be supported by the first bearing to reduce the vibration of the crankshaft, reduce the wear of the crankshaft and the first bearing, and effectively reduce the maintenance cost. In addition, by reasonably setting the axial height of the first bearing and the diameter of the crankshaft, the efficiency and operational reliability of the rotary compressor can be effectively improved.

[0007] The rotary compressor according to some embodiments of the present invention satisfies the following requirements:

[0008] According to some embodiments of the rotary compressor of the present invention, the outer diameter of the rotor is D and satisfies:

[0009]

[0010] According to some embodiments of the present invention, the rotary compressor meets the following requirements:

[0011] According to some embodiments of the present invention, the rotary compressor satisfies the following requirement: 45 mm ≤ D ≤ 70 mm.

[0012] According to some embodiments of the rotary compressor of the present invention, the outer diameter of the stator is D1, the inner diameter of the stator is D2, and the following conditions are satisfied:

[0013] According to some embodiments of the present invention, the rotary compressor satisfies the following requirement: 50 mm ≤ D1 ≤ 120 mm.

[0014] According to some embodiments of the rotary compressor of the present invention, the number of phases of the motor is m, and the following conditions are satisfied:

[0015] According to some embodiments of the present invention, the rotary compressor further includes a second bearing, the other end of the crankshaft is rotatably installed in the second bearing, the first bearing and the second bearing are detachably connected via a connecting piece, and the cylinder is located between the first bearing and the second bearing.

[0016] The utility model also provides a refrigeration device.

[0017] The refrigeration equipment according to an embodiment of the present invention includes any one of the rotary compressors described above.

[0018] The advantages of the refrigeration equipment and the above-mentioned rotary compressor over the prior art are the same and will not be described in detail here.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 1 is a structural diagram of a rotary compressor according to an embodiment of the present utility model;

[0022] Figure 2 is a partial schematic diagram of a rotary compressor according to an embodiment of the present utility model;

[0023] Figure 3 is a schematic cross-sectional view of a stator and a rotor according to an embodiment of the present utility model;

[0024] Figure 4 The friction power consumption of the crankshaft and the first bearing, the efficiency of the rotary compressor and The relationship diagram between

[0025] Figure 5 The friction power consumption of the crankshaft and the first bearing, the operating reliability of the rotary compressor and the friction power consumption of the first bearing and the friction power consumption of the first bearing and the friction power consumption of the first bearing The relationship diagram between .

[0026] Reference numerals:

[0027] Rotary compressor 100,

[0028] Motor 1, stator 11, stator core 111, yoke 1111, tooth portion 1112, stator slot 1113, stator winding 112, rotor 12, pump body structure 2, crankshaft 21, first bearing 22, first radial portion 221, first axial portion 222, cylinder 23, eccentric 24, second bearing 25, second radial portion 251, second axial portion 252, connecting member 26, liquid storage tank 3, housing 4. DETAILED DESCRIPTION

[0029] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0031] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0032] Reference below Figure 1-Figure 5 Description: According to the rotary compressor 100 of the embodiment of the present invention, a first bearing 22 is provided on the outer side of the crankshaft 21, and the cylinder 23 can be sealed by the first bearing 22 to improve the reliability of gas compression. The crankshaft 21 can be supported by the first bearing 22 to reduce the vibration of the crankshaft 21, reduce the wear of the crankshaft 21 and the first bearing 22, and effectively reduce the maintenance cost. Moreover, by reasonably setting the axial height of the first bearing 22 and the diameter of the crankshaft 21, the efficiency and operational reliability of the rotary compressor 100 can be effectively improved.

[0033] like Figure 1 As shown, a rotary compressor 100 according to an embodiment of the present invention includes: a motor 1 and a pump body structure 2.

[0034] The motor 1 includes a stator 11 and a rotor 12. The rotor 12 is installed in the stator 11. The stator 11 includes a stator core 111 and a stator winding 112. The stator core 111 includes a yoke 1111 and a plurality of teeth 1112. The yoke 1111 is constructed in a ring shape. The plurality of teeth 1112 are spaced apart and distributed in the circumferential direction of the yoke 1111. Two adjacent teeth 1112 together with the yoke 1111 define a stator slot 1113. The stator winding 112 is arranged in the stator slot 1113.

[0035] Specifically, a motor 1 is provided in the rotary compressor 100. The motor 1 is the power source of the rotary compressor 100 and mainly plays a driving role, converting electrical energy into mechanical energy to provide driving force for the components inside the rotary compressor 100. A stator 11 and a rotor 12 are provided in the motor 1. When the motor 1 is energized, the stator 11 can drive the rotor 12 to rotate, converting electrical energy into mechanical energy, and the rotor 12 is installed inside the stator 11 so that the distance between the stator 11 and the rotor 12 is relatively close, which is convenient for the stator 11 to drive the rotor 12 to rotate and can improve the reliability of the stator 11 driving the rotor 12 to rotate. At the same time, the stator 11 includes a stator core 111 and a stator winding 112. The stator core 111 can be used to provide a setting position for the stator winding 112. When the motor 1 is energized, the stator winding 112 can work together with the stator core 111 to generate electromagnetic force and drive the rotor 12 to rotate, thereby realizing the conversion of electrical energy into mechanical energy and realizing the driving function of the motor 1.

[0036] As well as Figure 3 As shown, a yoke 1111 and a plurality of teeth 1112 are provided on the stator core 111, the teeth 1112 are used to provide an installation position for the stator winding 112, the yoke 1111 is used to support the teeth 1112, and the yoke 1111 is constructed into a ring shape, so that the plurality of teeth 1112 can be conveniently spaced apart in the circumferential direction of the yoke 1111, so that two adjacent teeth 1112 can define a stator slot 1113 together with the yoke 1111, and the stator slot 1113 is used to wind the stator winding 112, that is, the stator winding 112 can be arranged in the stator slot 1113 to achieve stable installation of the stator winding 112 and ensure the reliability of the stator winding 112.

[0037] The pump body structure 2 includes a crankshaft 21, a first bearing 22, and a cylinder 23. One end of the crankshaft 21 is connected to the rotor 12, and the other end is rotatably disposed in the first bearing 22 and the cylinder 23 in sequence. The other end of the crankshaft 21 is connected to the eccentric member 24 in the cylinder 23. The number of stator slots 1113 is Q, the number of poles of the rotor 12 is P, the axial height of the first bearing 22 is H, and the diameter of the crankshaft 21 is d. GCD(Q, P) is the greatest common divisor of Q and P. Wherein: 5≤N=GCD(Q, P)≤6,

[0038] Specifically, the crankshaft 21 is used to transmit power. One end of the crankshaft 21 is connected to the rotor 12, so that the crankshaft 21 can rotate under the drive of the rotor 12 and transmit the driving force on the rotor 12 to other components. At the same time, the other end of the crankshaft 21 is rotatably provided in the first bearing 22, so that the crankshaft 21 can rotate relative to the first bearing 22, and the first bearing 22 can support the crankshaft 21 to prevent the crankshaft 21 from vibrating when rotating. In addition, the other end of the crankshaft 21 is rotatably provided in the cylinder 23 and is connected to the cylinder. 23 is connected, even if the crankshaft 21 can rotate relative to the cylinder 23, it can extend from the outside of the cylinder 23 to the inside to be connected to the eccentric piece 24 inside the cylinder 23, driving the eccentric piece 24 to rotate, so that the rotor 12 can be connected to the eccentric piece 24 through the crankshaft 21, so that the crankshaft 21 can transmit the driving force on the rotor 12 to the eccentric piece 24, so that the eccentric piece 24 can rotate relative to the cylinder 23, and compress the gas in the cylinder 23 during the rotation process, thereby realizing the compression function of the rotary compressor 100.

[0039] Among them, it should be noted that the eccentric member 24 is eccentrically arranged with respect to the crankshaft 21. The eccentric member 24 can be a piston. When the crankshaft 21 vibrates, additional friction will be generated between the crankshaft 21 and the first bearing 22, resulting in the loss of rotational energy and wear of the crankshaft 21 and the first bearing 22, which will lead to a decline in the performance of the rotary compressor 100 and an increase in maintenance costs. In addition, the vibration of the crankshaft 21 will also cause the sealing between the first bearing 22 and the cylinder 23 to deteriorate, thereby reducing the efficiency of the rotary compressor 100. Therefore, by arranging the first bearing 22 on the outside of the crankshaft 21, the vibration of the crankshaft 21 and the wear of the crankshaft 21 and the first bearing 22 can be effectively reduced. At the same time, the first bearing 22 can also seal the cylinder 23 from above the cylinder 23 to improve the reliability of gas compression and improve the efficiency of the rotary compressor 100.

[0040] In such Figure 1-Figure 2 In the embodiment shown, the upper end of the crankshaft 21 is connected to the rotor 12, and the lower end of the crankshaft 21 is passed through the first bearing 22 and the cylinder 23 in sequence. The rotor 12, the first bearing 22 and the cylinder 23 can be arranged in sequence in the up and down directions, and the first bearing 22 can also guide the crankshaft 21 to ensure that the lower end of the crankshaft 21 can extend into the interior of the cylinder 23 and be connected to the eccentric member 24, thereby improving the reliability of the movement of the eccentric member 24 driven by the crankshaft 21.

[0041] In addition, the first bearing 22 also includes a first radial portion 221 and a first axial portion 222. The first axial portion 222 is sleeved on the outside of the crankshaft 21 for supporting the crankshaft 21, and the first axial portion 222 extends along the axial direction of the crankshaft 21, which can increase the fitting length with the crankshaft 21 and improve the reliability of supporting the crankshaft 21. The first radial portion 221 is connected to the first axial portion 222 to make the first bearing 22 a whole to improve the structural strength of the first bearing 22, and the first radial portion 221 extends along the radial direction of the crankshaft 21 to increase the coverage of the cylinder 23 and improve the reliability of sealing the cylinder 23.

[0042] Furthermore, the relationship between the number Q of the stator slots 1113 and the number P of poles of the rotor 12 satisfies: 5≤N=GCD(Q,P)≤6, where GCD (Greatest Common Divisor) means the greatest common divisor, that is, the greatest common divisor N of Q and P can be 5 or 6. For example, when Q is 15, P can be 10, and when Q is 18, P can be 12. That is, the present application is applicable to the rotary compressor 100 in which the greatest common divisor of Q and P is 5 or 6. At the same time, the relationship between the axial height H of the first bearing 22, the diameter d of the crankshaft 21, and N satisfies: Among them, such as Figure 4 As shown, the friction power consumption between the crankshaft 21 and the first bearing 22 and The relationship between the efficiency of the rotary compressor 100 and The relationship between the two is a downward parabola. When the value is between 10 and 25, the friction power consumption between the crankshaft 21 and the first bearing 22 is small, and the efficiency of the rotary compressor 100 is high.

[0043] Furthermore, it is possible to set It is 10, 15, 20 or 25, etc., so as to reduce the friction power consumption between the crankshaft 21 and the first bearing 22 while making the efficiency of the rotary compressor 100 higher. That is, by reasonably setting the axial height of the first bearing 22 and the diameter of the crankshaft 21, the friction power consumption between the crankshaft 21 and the first bearing 22 can be effectively reduced, and the efficiency and operation reliability of the rotary compressor 100 can be improved.

[0044] It should be noted that by The value between 10 and 25 allows the designer to flexibly set the axial height of the first bearing 22 and the diameter of the crankshaft 21 according to actual needs, so as to maximize the efficiency of the rotary compressor 100 .

[0045] According to the rotary compressor 100 of the embodiment of the present invention, the motor 1 is provided to provide a driving force for the crankshaft 21, so that the crankshaft 21 can drive the eccentric 24 to move to compress the gas, thereby realizing the compression function of the rotary compressor 100, and a first bearing 22 is provided on the outer side of the crankshaft 21, and the cylinder 23 can be sealed by the first bearing 22 to improve the reliability of gas compression, and the crankshaft 21 can be supported by the first bearing 22 to reduce the vibration of the crankshaft 21, reduce the wear of the crankshaft 21 and the first bearing 22, and effectively reduce the maintenance cost. Moreover, by reasonably setting the axial height of the first bearing 22 and the diameter of the crankshaft 21, the efficiency and operational reliability of the rotary compressor 100 can be effectively improved.

[0046] In some embodiments, the following conditions are met:

[0047] Specifically, if Figure 4 As shown, the friction power consumption between the crankshaft 21 and the first bearing 22 and The relationship between the efficiency of the rotary compressor 100 and The relationship between the two is a downward parabola. When the value is between 13 and 17, the friction power consumption between the crankshaft 21 and the first bearing 22 can be reduced, and the efficiency of the rotary compressor 100 can be increased. It is 13, 15 or 17, etc., so as to make the friction power consumption between the first crankshaft 21 and the first bearing 22 smaller and at the same time make the efficiency of the rotary compressor 100 higher, that is, by reasonably setting the axial height of the first bearing 22 and the diameter of the crankshaft 21, the friction power consumption between the crankshaft 21 and the first bearing 22 can be further reduced, thereby improving the efficiency of the rotary compressor 100.

[0048] In some embodiments, the outer diameter of the rotor 12 is D and satisfies:

[0049] Specifically, the rotor 12 is sleeved on the outer side of the crankshaft 21 to drive the crankshaft 21 to rotate. Figure 5 As shown, the friction power consumption between the crankshaft 21 and the first bearing 22 and The relationship between the operating reliability of the rotary compressor 100 and The relationship between When the friction power consumption between the crankshaft 21 and the first bearing 22 is small, the operation reliability of the rotary compressor 100 is high, and the friction power consumption between the crankshaft 21 and the first bearing 22 is small. It is 15, 20, 25 or 30, etc., so as to reduce the friction power consumption between the crankshaft 21 and the first bearing 22 while increasing the operating reliability of the rotary compressor 100. That is, by reasonably setting the outer diameter of the rotor 12 and the diameter of the crankshaft 21, the friction power consumption between the crankshaft 21 and the first bearing 22 can be effectively reduced, and the operating reliability of the rotary compressor 100 can be improved.

[0050] In some embodiments, the following conditions are met:

[0051] Specifically, if Figure 5 As shown, the friction power consumption between the crankshaft 21 and the first bearing 22 and The relationship between the operating reliability of the rotary compressor 100 and The relationship between When the value is between 18 and 25, the friction power consumption between the crankshaft 21 and the first bearing 22 can be reduced, and the operation reliability of the rotary compressor 100 can be increased. It is 18, 20 or 25, etc., so as to reduce the friction power consumption between the crankshaft 21 and the first bearing 22 and at the same time make the operating reliability of the rotary compressor 100 higher. That is, by reasonably setting the outer diameter of the rotor 12 and the diameter of the crankshaft 21, the friction power consumption between the crankshaft 21 and the first bearing 22 can be further reduced, thereby improving the operating reliability of the rotary compressor 100.

[0052] In some embodiments, the following is satisfied: 45 mm ≤ D ≤ 70 mm.

[0053] Specifically, D is the outer diameter of the rotor 12. The larger D is, the larger the volume of the rotor 12 is, which is less conducive to the arrangement of the rotor 12 in the rotary compressor 100 and will cause the vibration of the crankshaft 21 to increase. Conversely, the smaller D is, the smaller the volume of the rotor 12 is, which is more conducive to the arrangement of the rotor 12 in the rotary compressor 100 and can reduce the vibration of the crankshaft 21. However, the outer diameter of the rotor 12 cannot be too small. If it is too small, the requirements for the processing technology will be too high, the processing difficulty will increase, and it will be not conducive to mass production. When D is between 45mm and 70mm, the outer diameter design of the rotor 12 can be more reasonable, which is conducive to the arrangement of the rotor 12 in the rotary compressor 100 and can reduce the processing difficulty. D can be set to 45mm, 55mm, 60mm or 70mm, etc., that is, by reasonably setting the outer diameter of the rotor 12, the vibration of the crankshaft 21 can be reduced while meeting the installation requirements of the rotor 12, thereby improving the efficiency of the rotary compressor 100.

[0054] In some embodiments, the outer diameter of the stator 11 is D1, the inner diameter of the stator 11 is D2, and the following conditions are satisfied:

[0055]

[0056] Specifically, the design of the outer diameter D1 of the stator 11 and the inner diameter D2 of the stator 11 needs to ensure the stiffness and stability of the stator 11. When the outer diameter of the stator 11 is larger, the heat exchange area can be increased, which is beneficial to the heat dissipation of the stator 11, but it will also increase the material consumption and increase the production cost. When the inner diameter of the stator 11 is larger, it is beneficial to improve the inductance and the efficiency of the motor 1, but the increase in the inner diameter D2 of the stator 11 will also cause the outer diameter D1 of the stator 11 to increase accordingly, that is, it will also increase the material consumption and increase the production cost. When D2 / D1 is between 0.56 and 0.65, the design of D1 and D2 can be more reasonable, and the material consumption can be reduced while meeting the heat dissipation requirements, the production cost can be reduced, and the efficiency of the motor 1 can be improved. D2 / D1 can be set to 0.56, 0.60 or 0.65, etc., that is, by reasonably setting the outer diameter and inner diameter dimensions of the stator 11, the efficiency of the motor 1 can be improved, and then the efficiency of the rotary compressor 100 can be improved.

[0057] In some embodiments, the following is satisfied: 50 mm ≤ D1 ≤ 120 mm.

[0058] Specifically, D1 is the outer diameter of the stator 11. The outer diameter of the stator 11 may affect the material used for the stator 11 and the efficiency of the motor 1. When D1 is larger, the volume of the stator 11 is larger and more material is used, which may lead to increased production costs. When D1 is smaller, the volume of the stator 11 is smaller and the heat exchange area with the air is smaller, which is not conducive to the heat dissipation of the stator 11. When D1 is between 50 mm and 120 mm, the outer diameter of the stator 11 can be designed more reasonably, which can improve the efficiency of the motor 1 while ensuring heat dissipation. That is, by reasonably designing the outer diameter size of the stator 11, the efficiency of the motor 1 can be effectively improved, and the efficiency of the rotary compressor 100 can be improved.

[0059] In some embodiments, the number of phases of the motor 1 is m, and the following conditions are satisfied:

[0060] Specifically, Q is the number of stator slots 1113, P is the number of poles of the rotor 12, and You can make That is, the ratio between the number of stator slots 1113 and the number of poles of the rotor 12 is smaller than the number of phases of the motor 1, which can reduce the harmonics generated by the motor 1, thereby reducing vibration and noise, and improving the running smoothness of the motor 1. The smaller ratio helps to obtain smoother torque output, reduce torque fluctuations, and reduce hysteresis and eddy current losses, thereby improving the efficiency of the motor 1. In addition, it can improve the flexibility of the motor 1 design, allowing designers to adjust the number of stator slots 1113 and the number of poles of the rotor 12 according to specific application requirements to maximize the performance of the motor 1.

[0061] In some embodiments, the rotary compressor 100 also includes a second bearing 25, and the other end of the crankshaft 21 can be rotatably passed through the second bearing 25. The first bearing 22 and the second bearing 25 are detachably connected through a connecting member 26, and the cylinder 23 is located between the first bearing 22 and the second bearing 25.

[0062] Specifically, the other end of the crankshaft 21 is rotatably inserted into the second bearing 25, so that the crankshaft 21 can rotate relative to the second bearing 25 to ensure that the crankshaft 21 can drive the eccentric 24 to move, and the second bearing 25 can support the crankshaft 21 to further reduce the vibration of the crankshaft 21 during rotation, and the cylinder 23 is arranged between the first bearing 22 and the second bearing 25, and the first bearing 22, the cylinder 23 and the second bearing 25 can be arranged in sequence in the up and down directions so that the crankshaft 21 can pass through the cylinder 23, and then the second bearing 25 can be arranged below the cylinder 23 to seal the cylinder 23 from below the cylinder 23 through the second bearing 25, thereby further improving the reliability of gas compression, and thus improving the efficiency of the rotary compressor 100.

[0063] In addition, the first bearing 22 and the second bearing 25 are detachably connected through the connecting piece 26, so that the first bearing 22 and the second bearing 25 can be fixed to improve the reliability of supporting the crankshaft 21 through the first bearing 22 and the second bearing 25. The connection method through the connecting piece 26 is simple, reliable, and easy to operate, and can facilitate the connection of the first bearing 22 and the second bearing 25, or the separation of the two. It is also convenient to replace the first bearing 22 or the second bearing 25 when it wears out and fails, thereby reducing the maintenance cost of the rotary compressor 100.

[0064] Among them, the connecting member 26 can be a bolt, and the first bearing 22 and the second bearing 25 can be connected by multiple bolts to improve the connection reliability between the two, and the multiple bolts can be distributed at intervals along the circumference of the first bearing 22 and the second bearing 25 to connect the first bearing 22 and the second bearing 25 at multiple positions at the same time, which can improve the connection stability between the two.

[0065] In such Figure 1-Figure 2 In the illustrated embodiment, the second bearing 25 also includes a second radial portion 251 and a second axial portion 252. The second axial portion 252 is sleeved on the outside of the crankshaft 21 for supporting the crankshaft 21, and the second axial portion 252 extends along the axial direction of the crankshaft 21, which can increase the fitting length with the crankshaft 21 and improve the reliability of supporting the crankshaft 21. The second radial portion 251 is connected to the second axial portion 252 so that the second bearing 25 is a whole to improve the structural strength of the second bearing 25, and the second radial portion 251 extends along the radial direction of the crankshaft 21 to increase the coverage of the cylinder 23 and improve the reliability of sealing the cylinder 23.

[0066] In addition, a liquid storage tank 3 is also provided in the rotary compressor 100. The liquid storage tank 3 is used to store refrigerant. The liquid storage tank 3 is connected to the cylinder 23 so that the refrigerant in the liquid storage tank 3 can enter the cylinder 23 and be compressed in the cylinder 23. The rotary compressor 100 also includes a shell 4. The shell 4 is used to provide an installation position for the components in the rotary compressor 100 and to protect them to avoid damage and failure due to collision.

[0067] The utility model also provides a refrigeration device.

[0068] According to an embodiment of the present invention, the refrigeration equipment includes any of the above-mentioned rotary compressors 100. By setting the motor 1, a driving force can be provided for the crankshaft 21, so that the crankshaft 21 can drive the eccentric 24 to move to compress the gas, thereby realizing the compression function of the rotary compressor 100. In addition, a first bearing 22 is provided on the outer side of the crankshaft 21, and the cylinder 23 can be sealed by the first bearing 22 to improve the reliability of gas compression. The crankshaft 21 can be supported by the first bearing 22 to reduce the vibration of the crankshaft 21, reduce the wear of the crankshaft 21 and the first bearing 22, and effectively reduce the maintenance cost. In addition, by reasonably setting the axial height of the first bearing 22 and the diameter of the crankshaft 21, the efficiency and operational reliability of the rotary compressor 100 can be effectively improved. Among them, the refrigeration equipment can be an air conditioner.

[0069] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0070] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A rotary compressor, characterized in that: include: A motor, the motor comprising a stator and a rotor, the rotor being mounted within the stator, the stator comprising a stator core and a stator winding, the stator core comprising a yoke and a plurality of teeth, the yoke being annular, the plurality of teeth being spaced apart and distributed in a circumferential direction of the yoke, two adjacent teeth defining stator slots together with the yoke, the stator winding being disposed within the stator slots; A pump body structure, the pump body structure comprising a crankshaft, a first bearing, and a cylinder, one end of the crankshaft being connected to the rotor and the other end being rotatably disposed in the first bearing and the cylinder in sequence, the other end of the crankshaft being connected to an eccentric member in the cylinder, the number of stator slots being Q, the number of poles of the rotor being P, the axial height of the first bearing being H, and the diameter of the crankshaft being d, where GCD(Q,P) is the greatest common divisor of Q and P; Among them, it satisfies: 5≤N=GCD(Q,P)≤6, 2. The rotary compressor according to claim 1, wherein satisfy:

3. The rotary compressor according to claim 1, wherein The outer diameter of the rotor is D, and satisfies:

4. The rotary compressor according to claim 3, wherein satisfy:

5. The rotary compressor according to claim 3, wherein Meets: 45mm≤D≤70mm.

6. The rotary compressor according to claim 1, wherein The outer diameter of the stator is D1, the inner diameter of the stator is D2, and the following conditions are satisfied:

7. The rotary compressor according to claim 6, characterized in that Meets: 50mm≤D1≤120mm.

8. The rotary compressor according to claim 1, wherein The number of phases of the motor is m, and it satisfies:

9. The rotary compressor according to claim 1, wherein It also includes a second bearing. The other end of the crankshaft is rotatably installed in the second bearing. The first bearing and the second bearing are detachably connected through a connecting piece. The cylinder is located between the first bearing and the second bearing.

10. A refrigeration device, characterized in that: A rotary compressor comprising the rotary compressor described in any one of claims 1 to 9.

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