Compressor and refrigeration equipment

Abstract

The utility model discloses a compressor and refrigeration equipment. The compressor comprises a rotor assembly and a crankshaft, and a first through-flow hole is formed in the rotor assembly; the crankshaft is connected with the rotor assembly, a main bearing is arranged on the crankshaft, and a second through-flow hole communicated with the first through-flow hole is formed in the main bearing; a plurality of first through-flow holes are formed around the axis of the crankshaft in the circumferential direction, a plurality of second through-flow holes are formed around the axial direction of the crankshaft in the circumferential direction, the outer diameter of each first through-flow hole is D1, the inner diameter of each first through-flow hole is D2, the outer diameter of each second through-flow hole is D3, the inner diameter of each second through-flow hole is D4, and D2 * D3 / (D1 * D4) is larger than or equal to 0.55 and smaller than or equal to 0.95. According to the compressor, the deviation range of the relative positions of the first through-flow hole in the rotor assembly and the second through-flow hole in the main bearing in the radial direction can be optimized, the through-flow effect is enhanced while the structural strength of the rotor assembly and the main bearing is guaranteed, the oil liquid level and oil liquid circulation of the compressor are improved, and the service life of the compressor is prolonged. And the operation reliability, efficiency and service life of the compressor are improved.

Description

Technical Field

[0001] This application relates to the technical field of compressors, and in particular to a compressor and a refrigeration device. Background Art

[0002] In refrigeration devices such as air conditioners and refrigerators, the compressor realizes energy transfer by compressing the refrigerant cycle. During this process, a part of the lubricating oil in the oil sump at the bottom of the compressor participates in the internal cycle of the compressor driven by the refrigerant to provide necessary lubrication, heat dissipation, or sealing functions for the crankshaft, motor, and bearings in the compressor. This is crucial for the operating efficiency and safety of the compressor. However, in related technologies, the circulating state of the lubricating oil inside the compressor is often very poor, making it difficult to ensure a good oil level in the compressor, resulting in easy wear of the motor, bearings, and other components in the compressor under high temperature and high pressure environments, and poor heat dissipation and sealing performance, seriously affecting the reliability, stability, and lifespan of the compressor. Summary of the Utility Model

[0003] This application aims to at least solve one of the technical problems existing in the prior art. For this reason, an object of this application is to provide a compressor that can optimize the deviation range of the relative positions of the first through-flow holes on the rotor assembly and the second through-flow holes on the main bearings in the radial direction, so as to enhance the through-flow effect while ensuring the structural strength of the rotor assembly and the main bearings, improve the oil level and oil circulation in the compressor, and thereby improve the operating reliability, efficiency, and lifespan of the compressor.

[0004] This application also provides a refrigeration device having the above compressor.

[0005] The compressor according to the first aspect embodiment of this application includes: a rotor assembly and a crankshaft. The rotor assembly is provided with first through-flow holes; the crankshaft is connected to the rotor assembly, and a main bearing is provided on the crankshaft. The main bearing has second through-flow holes communicating with the first through-flow holes. Among them, the first through-flow holes are configured as a plurality of holes circumferentially surrounding the axis of the crankshaft, the second through-flow holes are configured as a plurality of holes circumferentially surrounding the axial direction of the crankshaft. The outer diameter of the first through-flow holes is D1, the inner diameter is D2, the outer diameter of the second through-flow holes is D3, the inner diameter is D4, and it satisfies: 0.55 ≤ D2 * D3 / (D1 * D4) ≤ 0.95.

[0006] According to the compressor of the present application, by optimizing the proportional relationship among the outer diameter of the first flow hole, the inner diameter of the first flow hole, the outer diameter of the second flow hole, and the inner diameter of the second flow hole, the relative position deviation range in the radial direction between the first flow hole on the rotor assembly and the second flow hole on the main bearing can be made reasonable, so as to ensure the structural stiffness and strength of the rotor assembly and the main bearing while enhancing the flow effect, thereby effectively improving the oil liquid level and oil liquid circulation of the compressor, and improving the operation reliability, efficiency, and service life of the compressor under the condition of meeting the strength of the main bearing and the rotor assembly.

[0007] According to some embodiments of the present application, 0.5 ≤ D2 / D1 ≤ 0.7.

[0008] According to some embodiments of the present application, 0.7 ≤ D4 / D3 ≤ 0.9.

[0009] According to some embodiments of the present application, the shortest distance between the rotor assembly and the main bearing is L, and it satisfies: 20mm < D1 / D4 * L < 32mm.

[0010] According to some embodiments of the present application, the first flow hole is configured as one or more of a kidney-shaped hole, a trapezoidal hole, or a circular hole.

[0011] According to the refrigeration device of the second aspect embodiment of the present application, the refrigeration device includes: the compressor according to any one of the above embodiments.

[0012] Some of the additional aspects and advantages of the present application will be given in the following description, some will become obvious from the following description, or will be understood through the practice of the present application. Description of the Drawings

[0013] The above and / or additional aspects and advantages of the present application will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0014] Figure 1 is a cross-sectional view of the compressor according to the embodiment of the present application;

[0015] Figure 2 is a partial cross-sectional view of the compressor according to the embodiment of the present application;

[0016] Figure 3 is a schematic diagram of the main bearing according to the embodiment of the present application;

[0017] Figure 4 is a schematic diagram of the rotor assembly according to the first aspect embodiment of the present application;

[0018] Figure 5 is a schematic diagram of the rotor assembly according to the second aspect embodiment of the present application;

[0019] Figure 6 It is a schematic diagram of a rotor assembly according to an embodiment of the third aspect of the present application.

[0020] Reference numerals:

[0021] 100, compressor;

[0022] 10, rotor assembly; 10a, first flow passage hole; 10b, shaft hole;

[0023] 20, crankshaft;

[0024] 30, main bearing; 30a, mounting hole; 30b, first oil groove;

[0025] 40, piston; 50, stator assembly; 60, housing; 70, cylinder; 80, auxiliary bearing. Detailed implementation manners

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0027] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs; the terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "including" and "having" and any variations thereof in the specification and claims of the present application and the above-described drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of the present application or the above-described drawings are used to distinguish different objects and are not used to describe a specific order or primary-secondary relationship.

[0028] Referring to "embodiments" in the present application means that specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various positions in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments.

[0029] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "linked", "attached" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0030] The term "and / or" in the present application is merely an association relationship describing associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in the present application generally represents an "or" relationship between the associated objects before and after.

[0031] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, in different embodiments, the detailed description of the same components is omitted. It should be understood that the thickness, length, width, etc. of various components shown in the drawings in the embodiments of the present application, as well as the overall thickness, length, width, etc. of the integrated device are only illustrative and should not constitute any limitation to the present application.

[0032] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0033] In the description of the present application, that the first feature is "above" or "below" the second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but in contact through other features between them.

[0034] In the description of the present application, that the first feature is "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature.

[0035] The "plurality" mentioned in the present application refers to two or more (including two).

[0036] The following refers to Figures 1-6Describe a compressor 100 and a refrigeration device according to an embodiment of the present application.

[0037] As Figure 1 and Figure 2 shown, the compressor 100 according to the embodiment of the first aspect of the present application, the compressor 100 includes: a rotor assembly 10 and a crankshaft 20.

[0038] Wherein, a first through-flow hole 10a is formed on the rotor assembly 10; the crankshaft 20 is connected to the rotor assembly 10, and a main bearing 30 is provided on the crankshaft 20, and a second through-flow hole communicating with the first through-flow hole 10a is formed on the main bearing 30; the first through-flow hole 10a is configured to be a plurality of circumferentially surrounding the axis of the crankshaft 20, the second through-flow hole is configured to be a plurality of circumferentially surrounding the axial direction of the crankshaft 20, the outer diameter of the first through-flow hole 10a is D1, the inner diameter is D2, the outer diameter of the second through-flow hole is D3, the inner diameter is D4, and it satisfies: 0.55≤D2*D3 / (D1*D4)≤0.95.

[0039] Specifically, the rotor assembly 10 may be formed with a shaft hole 10b, at least a part of the crankshaft 20 is connected to the rotor assembly 10 and received in the shaft hole 10b, when the rotor assembly 10 operates, it can drive the crankshaft 20 to rotate, and the crankshaft 20 can transmit the rotational power to the connecting rod and the piston 40 in the compressor 100, etc., so that the connecting rod and the piston 40, etc. perform reciprocating motion to realize the compression work of the compressor 100; a plurality of first through-flow holes 10a may be formed on the rotor assembly 10, and the first through-flow holes 10a can provide a channel for the flow of fluid (such as oil, etc.) in the rotor assembly 10 to guide the oil to circulate in the rotor assembly 10 to play a good lubricating and cooling role. The plurality of first through-flow holes 10a are arranged circumferentially around the axis of the crankshaft 20 to improve the uniformity of the distribution of the oil during the rotation of the rotor. The plurality of first through-flow holes 10a can be arranged at intervals in the circumferential direction of the rotor assembly 10 or can be arranged in an array; at least another part of the main shaft section of the crankshaft 20 is provided with a main bearing 30, the main bearing 30 is sleeved on the crankshaft 20 and is axially spaced from the rotor assembly 10, the main bearing 30 can support the crankshaft 20, and a plurality of second through-flow holes can be formed on the main bearing 30, and the second through-flow holes can provide a channel for the flow of oil in the main bearing 30, and, the second through-flow holes are connected to the first through-flow holes 10a to form a preset oil flow path, and the plurality of second through-flow holes are arranged circumferentially around the axial direction of the crankshaft 20 to improve the uniformity of the distribution of the fluid in the bearing.

[0040] It should be noted that the outer diameter of the first flow hole 10a on the rotor assembly 10 is D1, the inner diameter of the first flow hole 10a is D2, the outer diameter of the second flow hole on the main bearing 30 is D3, and the inner diameter of the second flow hole is D4. When the value of D2*D3 / (D1*D4) is too small or too large, for example, when the value of D2*D3 / (D1*D4) is configured to be 0.5, 0.4 or 1, 1.2, etc., the radial deviation distance between the positions of the first flow hole 10a on the rotor assembly 10 and the second flow hole on the main bearing 30 will be too far, increasing the oil flow resistance, reducing the oil circulation efficiency and flow effect, thereby reducing the operating reliability and efficiency of the compressor 100. And when the value of D2*D3 / (D1*D4) is too small or too large, the unreasonable layout of the positions of the first flow hole 10a and the second flow hole will also affect the structural strength and stiffness of the rotor assembly 10 and the bearing, thereby reducing the ability of the rotor assembly 10 and the bearing to withstand loads and operate stably, further exacerbating the energy consumption and safety problems of the compressor 100. In the embodiment of the present application, the proportional relationship among the outer diameter D1 of the first flow hole 10a, the inner diameter D2 of the first flow hole 10a, the outer diameter D3 of the second flow hole, and the inner diameter D4 of the second flow hole is set within the range of 0.55≤D2*D3 / (D1*D4)≤0.95. For example, the value of D2*D3 / (D1*D4) can be configured to be 0.55, 0.6, 0.8 or 0.95, etc. In this way, the radial deviation degree of the positions of the first flow hole 10a and the second flow hole can be limited, so that the relative positions of the first flow hole 10a on the rotor assembly 10 and the second flow hole on the main bearing 30 in the radial direction are appropriate, thereby optimizing the oil flow path, improving the smoothness and efficiency of oil flow, and at the same time, ensuring that the rotor assembly 10 and the main bearing 30 have good structural stiffness and strength.

[0041] For the compressor 100 according to the present application, by optimizing the proportional relationship among the outer diameter of the first flow hole 10a, the inner diameter of the first flow hole 10a, the outer diameter of the second flow hole, and the inner diameter of the second flow hole, the relative position deviation range between the first flow hole 10a on the rotor assembly 10 and the second flow hole on the main bearing 30 in the radial direction can be made reasonable, so as to enhance the flow effect while ensuring the structural stiffness and strength of the rotor assembly 10 and the main bearing 30, thereby effectively improving the oil level and oil circulation of the compressor 100 while meeting the strength requirements of the main bearing 30 and the rotor assembly 10, and improving the operating reliability, efficiency and service life of the compressor 100.

[0042] In addition, in some specific embodiments of the present application, the crankshaft 20 includes a main shaft section, an eccentric section, and a sub-shaft section that are sequentially arranged away from the rotor assembly 10 along the axial direction. Among them, the main shaft section is the main load-bearing part. At least part of the main shaft section is connected to the rotor assembly 10, and at least another part of the main shaft section is connected to the main bearing 30. When the rotor assembly 10 operates, it can drive the main shaft section to rotate, and the eccentric section can be eccentrically arranged relative to the center line of the main shaft section. The sub-shaft section further assists the main shaft section and the eccentric section to complete power transmission, so as to transmit the rotational power of the crankshaft 20 to the connecting rod and the piston 40 in the compressor 100, etc., so that the connecting rod and the piston 40, etc. perform reciprocating motions.

[0043] As Figure 4 shown, according to some embodiments of the present application, 0.5 ≤ D2 / D1 ≤ 0.7.

[0044] Specifically, when the ratio of the inner diameter D2 to the outer diameter D1 of the first flow passage hole 10a is too small, for example, the value of D2 / D1 is configured to be 0.4, 0.3, or 0.2, etc., it will cause the area of the first flow passage hole 10a on the rotor assembly 10 to be too large, thereby reducing the magnetic flux of the yoke part (i.e., the non-channel part of the rotor assembly 10) of the rotor assembly 10, and will cause the uniformity of the magnetic flux distribution to deteriorate, and further reduce the working efficiency and stability of the compressor 100; when the ratio of the inner diameter D2 to the outer diameter D1 of the first flow passage hole 10a is too large, for example, the value of D2 / D1 is configured to be 0.75, 0.8, or 0.9, etc., it will cause the area of the first flow passage hole 10a to be too small, thereby increasing the resistance of the oil fluid flowing through the first flow passage hole 10a, resulting in poor oil fluid flowability and circulation effect, and further reducing the functions of temperature reduction and lubrication of the rotor assembly 10; in the embodiments of the present application, the ratio of the inner diameter D2 to the outer diameter D1 of the first flow passage hole 10a is set in the range of 0.5 to 0.7. For example, the value of D2 / D1 can be 0.5, 0.6, or 0.7, etc., so that the ratio of the inner diameter to the outer diameter of the first flow passage hole 10a is reasonable, which can improve the smoothness of the oil fluid flow, improve the oil fluid circulation path, and prevent problems such as local thinning of the rotor assembly 10 resulting in reduced magnetic flux and poor strength, so as to ensure the sufficient supply and uniform distribution of key working media such as oil fluid in the compressor 100, and further ensure the normal operation and high performance of the compressor 100, and ensure the reliability and durability of the compressor 100.

[0045] As Figure 3 shown, according to some embodiments of the present application, 0.7 ≤ D4 / D3 ≤ 0.9.

[0046] Specifically, when the ratio of the inner diameter D4 to the outer diameter D3 of the second flow hole is too small, for example, the value of D4 / D3 is configured to be 0.6, 0.5, or 0.4, etc., it will cause the area of the second flow hole on the main bearing 30 to be too large, severely weakening the structural strength and stiffness of the main bearing 30, resulting in poor load-bearing capacity of the main bearing 30 and being unable to bear the weights and rotational forces of components such as the crankshaft 20 and the rotor assembly 10, thereby affecting the working reliability of the crankshaft 20 and the rotor assembly 10, etc.; when the ratio of the inner diameter D4 to the outer diameter D3 of the second flow hole is too large, for example, the value of D4 / D3 is 0.93, 0.95, or 0.97, etc., similarly, it will cause the area of the second flow hole to be too small, increasing the resistance of the oil fluid flowing through the second flow hole, resulting in poor fluidity and flow effect of the oil fluid in the main bearing 30, and reducing the functions of cooling and lubricating the internal components of the compressor 100; in the embodiments of the present application, by setting the ratio of the inner diameter D4 to the outer diameter D3 of the second flow hole within the range of 0.7 to 0.9, the ratio of the inner diameter to the outer diameter of the second flow hole is reasonable, which can satisfy the main bearing 30 with good fluidity and structural strength, achieve a good balance between the support strength and the fluid fluidity, and further improve the efficiency, performance, and service life of the compressor 100.

[0047] In addition, in some specific embodiments of the present application, the main bearing 30 has an axially penetrating mounting hole 30a, the crankshaft 20 passes through the mounting hole 30a to cooperate with the main bearing 30, the outer peripheral wall of the crankshaft 20 has a first oil hole, the main bearing 30 has a first oil groove 30b, and an oil storage cavity is also formed between the outer peripheral wall of the crankshaft 20 and the inner wall of the mounting hole 30a of the main bearing 30 to communicate the first oil hole and the first oil groove 30b. Among them, during the operation of the compressor 100, the oil fluid can flow to the first oil hole on the crankshaft 20, and the first oil hole is communicated with the first oil groove 30b through the oil storage cavity, so that the oil fluid can flow from the first oil hole to the first oil groove 30b, and the first oil groove 30b can guide and store the oil fluid. In this way, it can ensure the oil supply amount of the friction pair formed by the crankshaft 20 and the main bearing 30, effectively reduce the friction power consumption, and further improve the energy efficiency and use reliability of the compressor 100.

[0048] As Figure 2 shown, according to some embodiments of the present application, the shortest distance between the rotor assembly 10 and the main bearing 30 is L, and it satisfies: 20mm < D1 / D4 * L < 32mm.

[0049] Specifically, the shortest distance between the rotor assembly 10 and the main bearing 30 is L, which can be understood as the shortest distance between the first flow-through hole 10a on the rotor assembly 10 and the second flow-through hole on the main bearing 30. By setting the dimensional relationship among the outer diameter D1 of the first flow-through hole 10a, the inner diameter D4 of the second flow-through hole, and the shortest distance L between the rotor assembly 10 and the main bearing 30 within the above range, for example, the value of D1 / D4*L is configured to be 24 mm, 28 mm, or 30 mm, etc., the dimensional relationship among the outer diameter of the first flow-through hole 10a, the inner diameter of the second flow-through hole, and the distance between the two flow-through holes can be set within an appropriate range, so as to effectively control the circulation path of the oil in the compressor 100, ensure that the oil fully lubricates each component, and at the same time avoid the increase in oil level fluctuation and flow resistance caused by too long a path. In this way, the maximum flow-through effect of the flow-through path can be achieved, which helps to optimize the oil circulation efficiency of the entire compressor 100.

[0050] As Figures 4-6 shown, according to some embodiments of the present application, the first flow-through hole 10a is configured as one or more of a kidney-shaped hole, a trapezoidal hole, or a circular hole.

[0051] Specifically, the outer contour of the plurality of first flow-through holes 10a on the rotor assembly 10 (i.e., the projected contour in the axial direction of the rotor assembly 10) can be the same. Exemplarily, the outer contours of the plurality of first flow-through holes 10a can all be configured as kidney-shaped as shown in Figure 4, where the kidney shape can be understood as an approximate ellipse. The outer contours of the plurality of first flow-through holes 10a can also all be configured as trapezoidal as shown in Figure 5, where the trapezoid can be understood as an approximate trapezoid, rather than an absolute trapezoidal shape. The outer contours of the plurality of first flow-through holes 10a can also all be configured as Figure 6 shown circular; the outer contours of the plurality of first flow-through holes 10a can also be different. The outer contours of the plurality of first flow-through holes 10a can include multiple types such as circular, kidney-shaped, and trapezoidal. Exemplarily, the outer contour of at least a part of the first flow-through holes 10a can be configured as circular, and the outer contour of at least another part of the first flow-through holes 10a can be configured as kidney-shaped or trapezoidal, etc.

[0052] Among them, the circular holes have good hydrodynamic performance, which can reduce the fluid flow resistance, allow the fluid to pass through with minimal energy loss, ensure sufficient fluid flow in the rotor assembly 10, and at the same time reduce the heat accumulation caused by fluid resistance; the kidney-shaped holes can provide a relatively large flow area, which helps to improve efficiency in applications where directional fluid flow is required. For example, when enhanced cooling effect in a specific direction is needed, the kidney-shaped holes can more effectively guide the fluid flow to ensure sufficient cooling of the rotor assembly 10 in this direction; the trapezoidal holes can provide a more uniform fluid flow pattern under certain specific fluid distribution requirements, improving the uniformity of oil distribution. By combining different shapes of the first flow holes 10a, a uniform fluid distribution can be achieved on the rotor assembly 10, and the direction and speed of fluid flow can be adjusted as needed, which is beneficial to ensuring that sufficient fluid support can be obtained in each area around the rotor assembly 10. Therefore, by configuring the first flow holes 10a as one or more of kidney-shaped holes, trapezoidal holes or circular holes, optimization can be achieved in terms of hydrodynamic efficiency, fluid distribution uniformity and design flexibility, ensuring good flow performance and flow effect of the rotor assembly 10, and improving the overall performance and energy efficiency level of the compressor 100.

[0053] It should be noted that the above-mentioned kidney-shaped holes, trapezoidal holes and circular holes are for illustrative purposes. The first flow holes 10a according to the present application can be, but are not limited to, configured as one or more of kidney-shaped holes, trapezoidal holes or circular holes. For example, in some other specific embodiments, the first flow holes 10a can also be configured as rectangular holes, etc. The rectangular holes can be relatively easily aligned with other rectangular or linear structures in the compressor 100, which is beneficial to improving manufacturing convenience and saving production costs.

[0054] In addition, as Figure 1As shown, in some specific embodiments of the present application, the compressor 100 further includes: a stator assembly 50, a housing 60, a cylinder 70, and a sub-bearing 80. Among them, the stator assembly 50 is sleeved outside the rotor assembly 10, and the housing 60 is sleeved outside the stator assembly 50. The stator assembly 50 can generate a magnetic field through electromagnetic induction. The rotor assembly 10 cooperates with the magnetic field generated by the stator assembly 50 to generate an electromagnetic torque, thereby realizing driving the crankshaft 20 to rotate. The housing 60 is wrapped outside the stator assembly 50 and the rotor assembly 10, which can play a good role in fixing and protecting the stator assembly 50, the rotor assembly 10, the crankshaft 20, and other components inside the compressor 100; both the cylinder 70 and the sub-bearing 80 are sleeved on the outer circumference of the crankshaft 20, and the cylinder 70 is arranged on the side of the main bearing 30 axially away from the rotor assembly 10, and the sub-bearing 80 is arranged on the side of the cylinder 70 axially away from the main bearing 30. The sub-bearing 80 and the main bearing 30 can support the crankshaft 20 at different positions of the crankshaft 20 respectively and reduce the friction and wear during its rotation, which helps to improve the running stability of the compressor 100. A piston 40 is arranged in the cylinder 70, and the piston 40 is connected to the crankshaft 20. The rotational movement of the crankshaft 20 can drive the piston 40 to reciprocate in the cylinder 70, thereby ensuring that the compression work of the compressor 100 can be effectively completed and energy consumption can be saved.

[0055] As Figures 1-6 shown, according to the refrigeration device of the second aspect embodiment of the present application, the refrigeration device includes: the compressor 100 described in any one of the above embodiments, and the technical effects generated are the same as those in the above embodiments, which will not be elaborated here.

[0056] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0057] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A compressor, characterized in that, Comprising: A rotor assembly, on which a first flow passage hole is provided; A crankshaft, which is connected to the rotor assembly, and a main bearing is provided on the crankshaft, and a second flow passage hole communicating with the first flow passage hole is provided on the main bearing; wherein The first flow passage holes are configured to be multiple ones arranged circumferentially around the axis of the crankshaft, the second flow passage holes are configured to be multiple ones arranged circumferentially around the axial direction of the crankshaft, the outer diameter of the first flow passage hole is D1, the inner diameter is D2, the outer diameter of the second flow passage hole is D3, the inner diameter is D4, and it satisfies: 0.55≤D2*D3 / (D1*D4)≤0.

95.

2. The compressor according to claim 1, wherein 0.5≤D2 / D1≤0.

7.

3. The compressor according to claim 1, characterized in that, 0.7≤D4 / D3≤0.

9.

4. The compressor according to claim 1, characterized in that, The shortest distance between the rotor assembly and the main bearing is L, and it satisfies: 20mm<D1 / D4*L<32mm.

5. The compressor according to any one of claims 1-4, characterized in that, The first flow passage hole is configured to be one or more of a kidney-shaped hole, a trapezoidal hole or a circular hole.

6. A refrigeration device, characterized in that, Comprising: The compressor according to any one of claims 1-5.

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