Bearing for pump body assembly, pump body assembly, compressor and air conditioner

Abstract

The utility model discloses a bearing for a pump body assembly, the pump body assembly, a compressor and an air conditioner, the pump body assembly comprises a crankshaft and the bearing, and a crankshaft hole for the crankshaft to penetrate through is formed in the bearing; wherein the crankshaft hole is through in the axial direction of the bearing, an anti-friction groove and an oil guide groove are formed in the inner wall of the crankshaft hole, the oil guide groove penetrates and extends to the other end of the crankshaft hole from one end of the crankshaft hole, the extending direction of the oil guide groove inclines relative to the axial direction of the crankshaft hole, and the anti-friction groove is communicated with the oil guide groove. According to the bearing for the pump body assembly disclosed by the embodiment of the utility model, the oil guide groove penetrating and extending from one end of the crankshaft hole to the other end of the crankshaft hole and the antifriction groove communicated with the oil guide groove are formed in the crankshaft hole of the bearing, so that the operation reliability of the pump body assembly can be ensured while the structural strength of the bearing is ensured; the operation efficiency of the pump body assembly is improved, the service life of the pump body assembly is prolonged, the structure is simple, the setting cost is low, the using effect is better, and the application range is wider.

Description

Technical Field

[0001] The utility model relates to the technical field of compressor manufacturing, in particular to a bearing for a pump body assembly, a pump body assembly, a compressor and an air conditioner. Background Art

[0002] With the development of the national economy and the continuous improvement of living standards, air conditioners have become an indispensable part of people's lives. The compressor is the core component of the air conditioner. The operating efficiency and reliability of the compressor are factors that need to be considered during the production and manufacturing of the compressor.

[0003] The compressor is equipped with a pump assembly. When the pump assembly is in operation, the crankshaft inside it rotates relative to the bearings. To ensure the reliability of the compressor, lubricating oil must be added between the crankshaft and the bearings. However, under harsh operating conditions such as high temperature and high pressure, insufficient oil supply between the crankshaft and the bearings can cause wear on the crankshaft and bearings, affecting the compressor's operating efficiency. Severe wear can even cause the pump to seize or the crankshaft to break, affecting the compressor's reliability and service life. This leaves 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 bearing for a pump assembly having a simple structure and low installation cost. The bearing can ensure the structural strength of the bearing while also ensuring the operational reliability of the pump assembly, thereby improving the operating efficiency of the pump assembly and extending the service life of the pump assembly.

[0005] According to the bearing for the pump body assembly of the embodiment of the present invention, the pump body assembly includes a crankshaft and the bearing, and the bearing is formed with a crankshaft hole for passing the crankshaft; wherein, the crankshaft hole is penetrated along the axial direction of the bearing, and the inner wall of the crankshaft hole is formed with a friction-reducing groove and an oil guide groove, the oil guide groove extends from one end of the crankshaft hole to the other end of the crankshaft hole, and the extension direction of the oil guide groove is inclined relative to the axial direction of the crankshaft hole, and the friction-reducing groove is connected to the oil guide groove.

[0006] According to the bearing for the pump body assembly according to the embodiment of the present invention, an oil guide groove extending from one end of the crankshaft hole to the other end of the crankshaft hole and a friction reduction groove connected to the oil guide groove are provided in the crankshaft hole of the bearing, thereby ensuring the structural strength of the bearing while also ensuring the operational reliability between the crankshaft and the bearing, thereby ensuring the operational reliability of the pump body assembly, improving the operational efficiency of the pump body assembly, and extending the service life of the pump body assembly, and the structure is simple, the setting cost is low, the use effect is better, and the scope of application is wider.

[0007] According to some embodiments of the present invention, the bearing for the pump body assembly has a friction reducing groove having a connecting end and a closed end spaced apart in the circumferential direction of the crankshaft hole, and the connecting end is connected to the oil guide groove along the circumferential direction of the crankshaft hole.

[0008] According to some embodiments of the present invention, in the bearing for a pump body assembly, an extension length of the friction-reducing groove in the circumferential direction of the crankshaft hole is smaller than a circumferential length of the crankshaft hole.

[0009] According to some embodiments of the present invention, in the bearing for a pump body assembly, the extension length of the anti-friction groove in the axial direction of the crankshaft hole is set to h, the axial length of the crankshaft hole is set to H, and the following conditions are satisfied: 0<h / H<1.

[0010] According to some embodiments of the present invention, in the bearing for a pump body assembly, the friction reducing groove is configured to be concave outward along the radial direction of the crankshaft hole on the inner wall of the crankshaft hole, and the inner bottom wall surface of the friction reducing groove is configured as an arc surface.

[0011] According to some embodiments of the present invention, in the bearings for pump body assemblies, the projection of the inner bottom wall of the anti-friction groove in the axial direction of the crankshaft hole is constructed as an arc-shaped surface, the central angle corresponding to the arc-shaped surface is a, and satisfies: 0°<a≤180°.

[0012] According to some embodiments of the present invention, in the bearing for a pump assembly, the radius of the arc-shaped surface is r, the radius of the crankshaft hole is R, and the following condition is satisfied: 0.1≤r / R<2.

[0013] According to some embodiments of the present invention, the bearing for the pump assembly, the axis of the arc-shaped surface and the axis of the crankshaft hole are spaced apart along the radial direction of the crankshaft hole;

[0014] Alternatively, the axis of the arc-shaped surface coincides with the axis of the crankshaft hole.

[0015] According to some embodiments of the present invention, the bearing for the pump assembly, the friction reducing groove is provided extending in the circumferential direction of the crankshaft hole;

[0016] The oil guide groove penetrates the friction reducing groove along the axial direction of the crankshaft hole to communicate with the friction reducing groove, or the friction reducing groove communicates with the oil guide groove on one side of the circumferential direction of the crankshaft hole.

[0017] According to some embodiments of the present invention, in the bearing for a pump assembly, a plurality of anti-friction grooves are provided, and each anti-friction groove is connected to at least one oil guide groove.

[0018] The utility model also provides a pump body assembly.

[0019] The pump body assembly according to the embodiment of the present invention includes any one of the bearings for the pump body assembly described above.

[0020] The utility model also provides a compressor.

[0021] The compressor according to the embodiment of the present invention includes any one of the bearings for the pump body assembly described above; or includes the pump body assembly described above.

[0022] The utility model also provides an air conditioner.

[0023] An air conditioner according to an embodiment of the present invention includes the compressor described above.

[0024] The air conditioner, the compressor, the pump assembly and the bearing for the pump assembly have the same advantages as those of the prior art, which will not be described in detail here.

[0025] 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

[0026] 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:

[0027] Figure 1 1 is a structural diagram of a bearing according to an embodiment of the present utility model;

[0028] Figure 2 It is a cross-sectional view of a bearing according to an embodiment of the present utility model.

[0029] Reference numerals:

[0030] Bearing 100,

[0031] Crankshaft hole 1 , friction reducing groove 11 , connecting end 111 , closed end 112 , arcuate surface 113 , oil guide groove 12 , first end 121 , second end 122 . DETAILED DESCRIPTION

[0032] 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.

[0033] 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.

[0034] 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.

[0035] Reference below Figure 1-Figure 2 The bearing 100 for a pump assembly according to an embodiment of the present invention has a simple structure and low installation cost. It can ensure the structural strength of the bearing 100 while ensuring the operational reliability of the pump assembly, thereby improving the operational efficiency of the pump assembly and extending the service life of the pump assembly.

[0036] like Figure 1-Figure 2 As shown, according to an embodiment of the present invention, a bearing 100 for a pump body assembly, the pump body assembly includes a crankshaft and a bearing 100, and the bearing 100 is formed with a crankshaft hole 1 for passing the crankshaft, wherein the crankshaft hole 1 is penetrated along the axial direction of the bearing 100, and the inner wall of the crankshaft hole 1 is formed with a friction-reducing groove 11 and an oil guide groove 12, the oil guide groove 12 extends from one end of the crankshaft hole 1 to the other end of the crankshaft hole 1, and the extension direction of the oil guide groove 12 is inclined relative to the axial direction of the crankshaft hole 1, and the friction-reducing groove 11 is connected to the oil guide groove 12.

[0037] The pump assembly is housed within the compressor, a driven fluid machine that pumps low-pressure gas to high-pressure gas. It's the heart of an air conditioner or refrigeration system. It draws low-temperature, low-pressure refrigerant gas from the intake pipe, compresses it through a motor-driven piston, and discharges high-temperature, high-pressure refrigerant gas into the exhaust pipe, powering the refrigeration cycle.

[0038] An air conditioner, also known as an air conditioner, consists of a main unit and other components. It is a unit used to provide temperature control for a (usually enclosed) space. Its function is to regulate parameters such as temperature, humidity, cleanliness, and air velocity within a room (or enclosed space or area) by producing either cold or hot air to meet human comfort or process requirements.

[0039] Specifically, a crankshaft and a bearing 100 are provided in the pump body assembly. The crankshaft can be connected to the drive motor of the compressor, and the drive motor can drive the crankshaft to rotate when it is running. The bearing 100 is provided with a crankshaft hole 1. The crankshaft hole 1 is provided along the axial direction of the bearing 100 and passes through the bearing 100. The crankshaft can extend into the crankshaft hole 1 to cooperate with the bearing 100. The bearing 100 can support the crankshaft, thereby ensuring the reliability of the crankshaft operation.

[0040] Furthermore, the crankshaft hole 1 is arranged to pass through along the axial direction of the bearing 100, and the inner circumferential wall of the crankshaft hole 1 is provided with an oil guide groove 12. The oil guide groove 12 is formed on the inner circumferential wall of the crankshaft hole 1, and the oil guide groove 12 is recessed toward the inner circumferential wall and open toward the crankshaft hole 1. The oil guide groove 12 is formed with a first end 121 and a second end 122. The first end 121 of the oil guide groove 12 can extend to one end of the crankshaft hole 1 in the axial direction and is arranged to pass through the end of the crankshaft hole 1. The other end of the oil guide groove 12 can extend to the other end of the crankshaft hole 1 in the axial direction and is arranged to pass through the end of the crankshaft hole 1, so that the lubricating oil can flow into the oil guide groove 12 along one of the first end 121 or the second end 122 of the oil guide groove 12, and then flow out of the oil guide groove 12 from the other of the first end 121 or the second end 122 of the oil guide groove 12.

[0041] When the driving motor drives the crankshaft to rotate, there is relative movement between the crankshaft and the bearing 100. At this time, the lubricating oil can be transported to the oil guide groove 12, so that when the crankshaft runs relative to the bearing 100, the lubricating oil can lubricate the outer circumferential wall of the crankshaft and the inner circumferential wall of the crankshaft hole 1, and the oil guide groove 12 is configured to extend through one end of the crankshaft hole 1 to the other end of the crankshaft hole 1, that is, when the crankshaft rotates relative to the crankshaft hole 1, the oil guide groove 12 can add lubricating oil to various parts of the outer circumferential wall of the crankshaft to ensure the lubrication effect of various parts between the crankshaft and the crankshaft hole 1. The structure is simple and can ensure the operational reliability of the crankshaft and the bearing 100.

[0042] Moreover, the extending direction of the oil guide groove 12 is inclined relative to the axial direction of the crankshaft hole 1, that is, when the oil guide groove 12 is set, the first end 121 and the second end 122 of the oil guide groove 12 are staggered along the axial direction of the crankshaft hole 1. When the crankshaft and the bearing 100 rotate relative to each other, the lubricating oil in the oil guide groove 12 can flow from one end to the other end of the oil guide groove 12 under the action of centrifugal force. Setting the extending direction of the oil guide groove 12 to be inclined relative to the axial direction of the crankshaft hole 1 can ensure the reliability of the flow of the lubricating oil in the oil guide groove 12, thereby ensuring the lubrication reliability.

[0043] In addition, the inner circumferential wall of the crankshaft hole 1 is also provided with a friction-reducing groove 11. The friction-reducing groove 11 is formed on the inner circumferential wall of the crankshaft hole 1. The friction-reducing groove 11 is also recessed toward the inner circumferential wall and is open toward the crankshaft hole 1. The friction-reducing groove 11 and the oil guide groove 12 are distributed along the circumference of the crankshaft hole 1 and the friction-reducing groove 11 is connected to the oil guide groove 12, so that the lubricating oil can flow toward the friction-reducing groove 11 after flowing into the oil guide groove 12.

[0044] The friction-reducing groove 11 is provided on the inner circumferential wall of the crankshaft hole 1 to reduce the contact area between the crankshaft hole 1 and the crankshaft, and the friction-reducing groove 11 and the oil guide groove 12 are connected, so that the lubricating oil in the oil guide groove 12 can flow into the friction-reducing groove 11, which can increase the amount of lubricating oil in the crankshaft hole 1, thereby reducing the friction area between the crankshaft hole 1 and the crankshaft while also improving the lubrication effect between the crankshaft and the bearing 100, ensuring the operational reliability of the pump body assembly, and the friction-reducing groove 11 is only a local groove on the inner circumferential wall of the crankshaft hole 1, which can improve the operational efficiency of the pump body assembly while ensuring the structural strength of the bearing 100, with a simple structure and low installation cost.

[0045] According to the bearing 100 for the pump body assembly according to the embodiment of the present invention, an oil guide groove 12 extending from one end of the crankshaft hole 1 to the other end of the crankshaft hole 1 and a friction reduction groove 11 connected to the oil guide groove 12 are provided in the crankshaft hole 1 of the bearing 100. Therefore, while ensuring the structural strength of the bearing 100, the operational reliability between the crankshaft and the bearing 100 can also be ensured, so as to ensure the operational reliability of the pump body assembly, improve the operational efficiency of the pump body assembly, and extend the service life of the pump body assembly. The utility model has a simple structure, low setting cost, better use effect, and a wider range of applications.

[0046] In some embodiments, the friction reducing groove 11 has a connecting end 111 and a closed end 112 spaced apart in the circumferential direction of the crankshaft hole 1 , and the connecting end 111 is connected to the oil guide groove 12 along the circumferential direction of the crankshaft hole 1 .

[0047] Specifically, the bearing 100 is provided with a crankshaft hole 1, and the inner peripheral wall of the crankshaft hole 1 is provided with a friction reducing groove 11 and an oil guide groove 12 which are connected. The friction reducing groove 11 and the oil guide groove 12 are distributed along the circumference of the crankshaft hole 1, and as shown in FIG. Figure 2As shown, the friction reducing groove 11 is provided with a connecting end 111 and a closed end 112, and the connecting end 111 and the closed end 112 are spaced apart and distributed along the circumference of the crankshaft hole 1, that is, the friction reducing groove 11 is extended along the circumference of the crankshaft hole 1, and the connecting end 111 and the closed end 112 are distributed at both ends of the friction reducing groove 11 along the circumference of the crankshaft hole 1.

[0048] Furthermore, if Figure 1-Figure 2 As shown, the connecting end 111 is connected to the oil guide groove 12 along the circumference of the crankshaft hole 1, that is, when the crankshaft and the bearing 100 rotate relative to each other, the lubricating oil can flow along the oil guide groove 12 due to the action of centrifugal force, and during the flow process, the lubricating oil can flow from the oil guide groove 12 to the connecting end 111 of the friction reducing groove 11, and then flow into the friction reducing groove 11, so that the lubricating oil in the friction reducing groove 11 and the lubricating oil in the oil guide groove 12 can lubricate the crankshaft and the bearing 100 together, thereby improving the lubrication effect.

[0049] In actual setting, the friction reducing groove 11 can be set on the side of the oil guide groove 12 away from the rotation direction of the bearing 100, so as to facilitate the lubricating oil in the oil guide groove 12 to flow into the friction reducing groove 11 under the action of centrifugal force, thereby ensuring the reliability of the lubricating oil flow.

[0050] In some embodiments, the extending length of the friction reducing groove 11 in the circumferential direction of the crankshaft hole 1 is smaller than the circumferential length of the crankshaft hole 1 .

[0051] Specifically, the inner circumferential wall of the crankshaft hole 1 is provided with a friction reducing groove 11 connected to the oil guide groove 12. The friction reducing groove 11 extends along the circumference of the crankshaft hole 1, so that the lubricating oil in the oil guide groove 12 can flow into the friction reducing groove 11, thereby improving the lubrication effect between the crankshaft and the bearing 100. Figure 1-Figure 2 As shown, the extension length of the anti-friction groove 11 in the circumferential direction of the crankshaft hole 1 is less than the circumferential length of the crankshaft hole 1, that is, the anti-friction groove 11 can be set as an arc groove on the inner circumferential wall of the crankshaft hole 1, and can also be set as an open annular groove on the inner circumferential wall of the anti-friction groove 11, etc., so that the anti-friction groove 11 is only a local groove body on the inner circumferential wall of the crankshaft hole 1, which can avoid the anti-friction groove 11 from being too large in the circumferential direction and affecting the structural strength of the bearing 100.

[0052] That is, the circumferential extension length of the friction reduction groove 11 in the crankshaft hole 1 is set to be smaller than the circumferential length of the crankshaft hole 1, which can reduce the friction area between the crankshaft and the bearing 100 and increase the lubrication effect between the crankshaft and the bearing 100 while ensuring the structural strength of the bearing 100, so as to ensure the operating reliability of the pump body assembly and extend the service life of the pump body assembly.

[0053] In some embodiments, the extension length of the friction reducing groove 11 in the axial direction of the crankshaft hole 1 is set to h, the axial length of the crankshaft hole 1 is set to H, and the following conditions are satisfied: 0<h / H<1.

[0054] Specifically, the inner circumferential wall of the crankshaft hole 1 is provided with a friction-reducing groove 11 extending circumferentially along the crankshaft hole 1. The friction-reducing groove 11 can reduce the friction area between the crankshaft and the bearing 100, thereby improving the operating efficiency of the pump body assembly. The extension length of the friction-reducing groove 11 in the axial direction of the crankshaft hole 1 is set to h, and the axial length of the crankshaft hole 1 is set to H, and it satisfies: 0<h / H<1, that is, the ratio of the extension length of the friction-reducing groove 11 in the axial direction of the crankshaft hole 1 to the axial length of the crankshaft hole 1 can be set to 0.1, 0.5 or 0.9, etc., that is, the extension length of the friction-reducing groove 11 in the axial direction of the crankshaft hole 1 is set to be less than the axial length of the crankshaft hole 1.

[0055] Furthermore, the axial extension length of the friction-reducing groove 11 in the crankshaft hole 1 is set to be less than the axial length of the crankshaft hole 1, and both ends of the friction-reducing groove 11 in the axial direction of the crankshaft hole 1 are set to closed ends 112. One end of the friction-reducing groove 11 in the circumferential direction of the crankshaft hole 1 is a connecting end 111, and the other end is a closed end 112, that is, only one end of the friction-reducing groove 11 is a connecting end 111, and is connected to the oil guide groove 12, so that the oil guide groove 12 can transport lubricating oil to the friction-reducing groove 11, and a certain amount of lubricating oil can be stored in the friction-reducing groove 11, thereby reducing the friction area between the crankshaft hole 1 and the crankshaft while also improving the lubrication effect between the crankshaft hole 1 and the crankshaft. At the same time, setting the axial extension length of the friction-reducing groove 11 in the crankshaft hole 1 to be less than the axial length of the crankshaft hole 1 can ensure the structural strength of the bearing 100 to ensure the operational reliability of the pump body assembly.

[0056] In some embodiments, the anti-friction groove 11 is configured to be concave outward along the radial direction of the crankshaft hole 1 on the inner wall of the crankshaft hole 1 , and the inner bottom wall surface of the anti-friction groove 11 is configured as an arc surface 113 .

[0057] Specifically, the friction-reducing groove 11 is arranged on the inner circumferential wall of the crankshaft hole 1 and extends along the circumference of the crankshaft hole 1. The friction-reducing groove 11 is constructed to be recessed outward along the radial direction of the crankshaft hole 1 on the inner wall of the crankshaft hole 1, that is, the friction-reducing groove 11 is arranged as a groove-shaped structure. The friction-reducing groove 11 is connected to the oil guide groove 12, so that the oil guide groove 12 can transport lubricating oil into the friction-reducing groove 11. When the crankshaft and the bearing 100 rotate relative to each other, the lubricating oil in the friction-reducing groove 11 is subjected to the centrifugal force and will first be stored in the groove of the friction-reducing groove 11. As the amount of lubricating oil transported to the friction-reducing groove 11 increases, a certain amount of lubricating oil can be stored in the friction-reducing groove 11. Then, when the lubricating oil is interrupted in transport, the certain amount of lubricating oil stored in the friction-reducing groove 11 can lubricate the crankshaft and the bearing 100, thereby ensuring lubrication reliability.

[0058] Furthermore, the friction reducing groove 11 is configured to be concave outward along the radial direction of the crankshaft hole 1 on the inner wall of the crankshaft hole 1, and as shown in FIG. Figure 1As shown, the inner bottom wall surface of the anti-friction groove 11 can be set as an arcuate surface 113, and the arcuate surface 113 is extended along the circumference of the crankshaft hole 1. One end of the arcuate surface 113 along the circumference of the crankshaft hole 1 is connected with the oil guide groove 12, so that when the oil guide groove 12 transports lubricating oil into the anti-friction groove 11, the lubricating oil can flow along the arcuate surface 113, and the lubricating oil can flow to the outside of the anti-friction groove 11 through the other end of the arcuate surface 113. Setting the inner bottom wall surface of the anti-friction groove 11 as the arcuate surface 113 can reduce the flow resistance of the lubricating oil in the anti-friction groove 11, so as to ensure the reliability of the flow of the lubricating oil.

[0059] In some embodiments, the projection of the inner bottom wall of the anti-friction groove 11 in the axial direction of the crankshaft hole 1 is configured as an arc surface 113 , the central angle corresponding to the arc surface 113 is a, and satisfies: 0°<a≤180°.

[0060] Specifically, the friction-reducing groove 11 is constructed to be concave outward along the radial direction of the crankshaft hole 1 on the inner wall of the crankshaft hole 1, and the projection of the inner bottom wall surface of the friction-reducing groove 11 in the axial direction of the crankshaft hole 1 is constructed as an arc-shaped surface 113, which can reduce the flow resistance of the lubricating oil when flowing in the friction-reducing groove 11, thereby ensuring the lubricating effect of the lubricating oil, and the central angle corresponding to the arc-shaped surface 113 is a, and satisfies: 0°<a≤180°, that is, the central angle a corresponding to the arc-shaped surface 113 can be set to 20°, 100° or 180°, etc.

[0061] Furthermore, the central angle a corresponding to the arc surface 113 is set to satisfy: 0°<a≤180°, so that the inner bottom wall surface of the friction reducing groove 11 can be set to a semicircle at most. At this time, the area of ​​the friction reducing groove 11 is larger, thereby reducing the friction area between the crankshaft hole 1 and the crankshaft, and increasing the oil storage capacity of the friction reducing groove 11, thereby improving the lubrication effect. The central angle a of the arc surface 113 is set to no more than 180°, that is, the extension length of the friction reducing groove 11 in the circumferential direction of the crankshaft hole 1 does not exceed half of the circumference of the crankshaft hole 1, which can ensure the structural strength of the bearing 100 and thus ensure the operating reliability of the bearing 100.

[0062] In some embodiments, the radius of the arc-shaped surface 113 is r, the radius of the crankshaft hole 1 is R, and the following relationship is satisfied: 0.1≤r / R<2.

[0063] Specifically, the radius of the arcuate surface 113 is r, the radius of the crankshaft hole 1 is R, and they satisfy: 0.1≤r / R<2, that is, the ratio of the radius of the arcuate surface 113 to the radius of the crankshaft hole 1 can be set to 0.1, 1 or 1.9, etc., and the ratio of the radius of the arcuate surface 113 to the radius of the crankshaft hole 1 is set to satisfy 0.1≤r / R<1, that is, the radius of the arcuate surface 113 is set to be smaller than the radius of the crankshaft hole 1, and the ratio of the radius of the arcuate surface 113 to the radius of the crankshaft hole 1 is set to satisfy r / R=1, that is, the radius of the arcuate surface 113 is set to be equal to the radius of the crankshaft hole 1, and the ratio of the radius of the arcuate surface 113 to the radius of the crankshaft hole 1 is set to satisfy 1<r / R<2, that is, the radius of the arcuate surface 113 is set to be larger than the radius of the crankshaft hole 1, which can improve the setting flexibility.

[0064] The radius r of the arc-shaped surface 113 of the inner bottom wall of the friction-reducing groove 11 and the radius R of the crankshaft hole 1 are set to satisfy: 0.1≤r / R<2, so that the inner bottom wall of the friction-reducing groove 11 can be recessed outward along the radial direction of the crankshaft hole 1 on the inner wall of the crankshaft hole 1, thereby reducing the contact area between the crankshaft hole 1 and the crankshaft, and thus reducing the friction between the crankshaft hole 1 and the crankshaft, so as to reduce the energy loss during the movement of the crankshaft and ensure the operating efficiency of the pump body assembly.

[0065] In some embodiments, the axis of the arc-shaped surface 113 and the axis of the crankshaft hole 1 are spaced apart along the radial direction of the crankshaft hole 1 ; or, the axis of the arc-shaped surface 113 and the axis of the crankshaft hole 1 coincide with each other.

[0066] Specifically, the inner bottom wall of the anti-friction groove 11 can be set to a circular arc surface 113, which can reduce the resistance of the lubricating oil when it moves in the anti-friction groove 11, and ensure the reliability of the lubricating oil in lubricating the crankshaft and the crankshaft hole 1, and the circular arc surface 113 is formed with an axis. The axis of the circular arc surface 113 can be set to be distributed at intervals along the radial direction of the crankshaft hole 1 with the axis of the crankshaft hole 1, that is, the curvature of the circular arc surface 113 and the curvature of the crankshaft hole 1 are set to be different, but the lowest point of the circular arc surface 113 and the center of the crankshaft hole 1 are distributed radially with the center of the crankshaft hole 1.

[0067] The axis of the arc-shaped surface 113 can also be set to coincide with the axis of the crankshaft hole 1, that is, the curvature of the arc-shaped surface 113 is set to be the same as the curvature of the crankshaft hole 1, and the distance between each part of the arc-shaped surface 113 and the center of the crankshaft hole 1 is the same, so that the wall thickness of the anti-friction groove 11 of the bearing 100 is the same, avoiding the local structure of the anti-friction groove 11 being weak, resulting in breakage, etc., thereby extending the service life of the bearing 100.

[0068] In some embodiments, the friction reducing groove 11 extends in the circumferential direction of the crankshaft hole 1, wherein the oil guide groove 12 penetrates the friction reducing groove 11 along the axial direction of the crankshaft hole 1 to communicate with the friction reducing groove 11, or the friction reducing groove 11 is communicated with the oil guide groove 12 on one side in the circumferential direction of the crankshaft hole 1.

[0069] Specifically, the inner peripheral wall of the crankshaft hole 1 is provided with a friction reducing groove 11 and an oil guide groove 12 which are connected to each other. The friction reducing groove 11 and the oil guide groove 12 are distributed along the circumference of the crankshaft hole 1, and as shown in FIG. Figure 1-Figure 2 As shown, the friction reducing groove 11 is extended in the circumferential direction of the crankshaft hole 1, and the lubricating oil in the oil guide groove 12 can flow into the friction reducing groove 11. When the bearing 100 and the crankshaft rotate relative to each other, the lubricating oil in the friction reducing groove 11 can be distributed to various parts of the friction reducing groove 11 along the circumferential direction of the crankshaft hole 1 under the action of centrifugal force, so that various parts of the friction reducing groove 11 and the space between the crankshaft can be filled with lubricating oil, so as to improve the lubrication effect between the crankshaft and the bearing 100 and ensure the operating reliability of the bearing 100 and the crankshaft.

[0070] Furthermore, the oil guide groove 12 extends from one end of the crankshaft hole 1 to the other end of the crankshaft hole 1, and the oil guide groove 12 can penetrate the friction reducing groove 11 along the axial direction of the crankshaft hole 1 to communicate with the friction reducing groove 11, that is, the oil guide groove 12 can be divided into two sections, and the ends of the two sections of the oil guide grooves 12 away from each other are both connected to the end of the crankshaft hole 1, and the ends of the two sections of the oil guide grooves 12 close to each other are both connected to the friction reducing groove 11, so that the lubricating oil in the oil guide groove 12 can flow to the two ends of the friction reducing groove 11 along the circumferential direction of the crankshaft hole 11 when flowing to the friction reducing groove 11, thereby increasing the speed at which the lubricating oil flows to various places in the friction reducing groove 11.

[0071] And as Figure 1-Figure 2 As shown, the friction reducing groove 11 can also be arranged to be connected to the oil guide groove 12 on one side in the circumferential direction of the crankshaft hole 1, that is, the friction reducing groove 11 is connected to the oil guide groove 12 at one end close to the oil guide groove 12 along the circumference of the crankshaft hole 1, and the friction reducing groove 11 is closed at one end away from the oil guide groove 12 along the circumference of the crankshaft hole 1, so that when the crankshaft and the bearing 100 rotate relative to each other, the lubricating oil in the oil guide groove 12 can flow into the friction reducing groove 11 through the end connected to the friction reducing groove 11 and the oil guide groove 12 under the action of centrifugal force, and can be restricted by the closed end of the friction reducing groove 11, so that a certain amount of lubricating oil is stored in the friction reducing groove 11, thereby increasing the lubrication area between the crankshaft and the crankshaft hole 1, and improving the lubrication effect.

[0072] In some embodiments, a plurality of anti-friction grooves 11 are provided, and each anti-friction groove 11 is connected to at least one oil guide groove 12 .

[0073] Specifically, the bearing 100 is provided with a crankshaft hole 1 for passing the crankshaft, and the inner circumferential wall of the crankshaft hole 1 is provided with a friction-reducing groove 11 to reduce the friction area between the crankshaft hole 1 and the crankshaft, so as to reduce the energy loss during the operation of the pump body assembly and improve the operation efficiency of the pump body assembly. The friction-reducing groove 11 can be provided in plurality, and the plurality of friction-reducing grooves 11 can be distributed in the circumferential direction of the crankshaft hole 1 at intervals, thereby greatly reducing the friction area between the crankshaft hole 1 and the crankshaft and ensuring the operation efficiency of the pump body assembly.

[0074] Furthermore, multiple friction-reducing grooves 11 can be distributed at equal intervals in the circumferential direction of the crankshaft hole 1, so that the forces acting on the bearings 100 between each friction-reducing groove 11 are the same, thereby avoiding excessive local forces on the bearings 100, which may lead to failure of the bearings 100 to support the crankshaft, and ensuring the operational reliability of the bearings 100 and the crankshaft.

[0075] Each friction-reducing groove 11 is connected to at least one oil guide groove 12, that is, each friction-reducing groove 11 can be connected to one, two or three oil guide grooves 12. Each friction-reducing groove 11 is connected to at least one oil guide groove 12, so that each friction-reducing groove 11 can be supplied with lubricating oil by the corresponding oil guide groove 12, thereby enabling the friction-reducing groove 11 to reduce the friction area between the crankshaft hole 1 and the crankshaft while increasing the amount of lubricating oil between the crankshaft hole 1 and the crankshaft, thereby ensuring the operational reliability of the pump body assembly and extending the service life of the pump body assembly.

[0076] The utility model also provides a pump body assembly.

[0077] The pump body assembly according to the embodiment of the present invention includes any one of the above-mentioned bearings 100 for a pump body assembly.

[0078] According to the pump body assembly of the embodiment of the present invention, an oil guide groove 12 extending from one end of the crankshaft hole 1 to the other end of the crankshaft hole 1 and a friction reduction groove 11 connected to the oil guide groove 12 are provided in the crankshaft hole 1 of the bearing 100, thereby ensuring the structural strength of the bearing 100 while also ensuring the operational reliability between the crankshaft and the bearing 100, thereby ensuring the operational reliability of the pump body assembly, improving the operational efficiency of the pump body assembly, and extending the service life of the pump body assembly, and the utility model has a simple structure, low setting cost, better use effect, and a wider range of applications.

[0079] The utility model also provides a compressor.

[0080] The compressor according to the embodiment of the present invention includes any one of the above-mentioned bearings 100 for a pump body assembly; or includes the above-mentioned pump body assembly.

[0081] According to the compressor of the embodiment of the present invention, an oil guide groove 12 extending from one end of the crankshaft hole 1 to the other end of the crankshaft hole 1 and a friction reduction groove 11 connected to the oil guide groove 12 are provided in the crankshaft hole 1 of the bearing 100, thereby ensuring the structural strength of the bearing 100 while also ensuring the operational reliability between the crankshaft and the bearing 100, thereby ensuring the operational reliability of the compressor, improving the operating efficiency of the compressor, and extending the service life of the compressor. The utility model has a simple structure, low setting cost, better use effect, and a wider range of applications.

[0082] The utility model also provides an air conditioner.

[0083] An air conditioner according to an embodiment of the present invention includes the above-mentioned compressor.

[0084] According to the air conditioner of the embodiment of the present invention, an oil guide groove 12 extending from one end of the crankshaft hole 1 to the other end of the crankshaft hole 1 and a friction reduction groove 11 connected to the oil guide groove 12 are provided in the crankshaft hole 1 of the bearing 100, thereby ensuring the structural strength of the bearing 100 while also ensuring the operational reliability between the crankshaft and the bearing 100, thereby ensuring the operational reliability of the air conditioner, improving the operational efficiency of the air conditioner, and extending the service life of the air conditioner. The structure is simple, the setting cost is low, the use effect is better, and the scope of application is wider.

[0085] 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.

[0086] 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 bearing for a pump assembly, characterized in that: The pump body assembly includes a crankshaft and the bearing, and the bearing is formed with a crankshaft hole for passing the crankshaft; In which, the crankshaft hole passes through along the axial direction of the bearing, and the inner wall of the crankshaft hole is formed with a friction-reducing groove and an oil guide groove, the oil guide groove extends from one end of the crankshaft hole to the other end of the crankshaft hole, and the extension direction of the oil guide groove is inclined relative to the axial direction of the crankshaft hole, and the friction-reducing groove is connected to the oil guide groove.

2. The bearing for a pump assembly according to claim 1, characterized in that: The friction reducing groove has a communicating end and a closed end which are spaced apart in the circumferential direction of the crankshaft hole, and the communicating end is communicated with the oil guiding groove along the circumferential direction of the crankshaft hole.

3. The bearing for a pump assembly according to claim 1, characterized in that: An extension length of the friction-reducing groove in the circumferential direction of the crankshaft hole is smaller than a circumferential length of the crankshaft hole.

4. The bearing for a pump assembly according to claim 1, characterized in that: An extension length of the friction-reducing groove in the axial direction of the crankshaft hole is set to h, and an axial length of the crankshaft hole is set to H, and the following conditions are satisfied: 0<h / H<1.

5. The bearing for a pump assembly according to claim 1, characterized in that: The friction reducing groove is configured to be concave outwardly along the radial direction of the crankshaft hole on the inner wall of the crankshaft hole, and the inner bottom wall surface of the friction reducing groove is configured to be an arc-shaped surface.

6. The bearing for a pump assembly according to claim 5, characterized in that: The projection of the inner bottom wall surface of the anti-friction groove in the axial direction of the crankshaft hole is configured as an arc-shaped surface, the central angle corresponding to the arc-shaped surface is a, and satisfies: 0°<a≤180°.

7. The bearing for a pump assembly according to claim 6, characterized in that: The radius of the arc-shaped surface is r, the radius of the crankshaft hole is R, and they satisfy: 0.1≤r / R<2.

8. The bearing for a pump assembly according to claim 6, characterized in that: The axis of the arc-shaped surface and the axis of the crankshaft hole are spaced apart along the radial direction of the crankshaft hole; Alternatively, the axis of the arc-shaped surface coincides with the axis of the crankshaft hole.

9. The bearing for a pump assembly according to claim 1, characterized in that: The friction reducing groove is extended in the circumferential direction of the crankshaft hole; The oil guide groove penetrates the friction reducing groove along the axial direction of the crankshaft hole to communicate with the friction reducing groove, or the friction reducing groove communicates with the oil guide groove on one side of the circumferential direction of the crankshaft hole.

10. The bearing for a pump assembly according to claim 1, characterized in that: There are multiple friction reducing grooves, and each friction reducing groove is connected to at least one oil guide groove.

11. A pump assembly, characterized in that: A bearing for a pump body assembly comprising the bearing according to any one of claims 1-10.

12. A compressor, characterized in that: A bearing for a pump body assembly comprising any one of claims 1 to 10; or a pump body assembly comprising claim 11.

13. An air conditioner, characterized in that: Including the compressor according to claim 12.

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