Bearing seat assembly, compressor and refrigeration equipment

Abstract

The utility model provides a bearing seat assembly, a compressor and refrigeration equipment, the bearing seat assembly is used for the compressor, the bearing seat assembly comprises a bearing seat and a shaft sleeve, the bearing seat is made of a powder metallurgy material, the bearing seat is provided with a mounting hole, and the mounting hole extends along the axial direction of the compressor; the shaft sleeve is arranged in the mounting hole and provided with a shaft hole used for mounting a crankshaft of the compressor. According to the bearing seat assembly, main friction and abrasion between the crankshaft and the bearing seat are borne through the shaft sleeve, so that the problem of abrasion of an inner hole of the bearing seat made of powder metallurgy materials is solved, and the service life of the bearing seat is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration equipment technology, and specifically proposes a bearing housing assembly, a compressor, and refrigeration equipment. Background Technology

[0002] Currently, in order to reduce the manufacturing cost of bearing housings, powder metallurgy materials are used to make them. However, this material choice limits the service life of the bearing housings. Specifically, when the compressor crankshaft is fitted with a powder metallurgy bearing housing, the interaction between the two causes localized stress on the inner bore of the bearing housing. This excessive localized stress leads to severe wear in the inner bore of the powder metallurgy bearing housing, resulting in a shorter service life. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0004] Therefore, the first aspect of this utility model proposes a bearing housing assembly.

[0005] The second aspect of this utility model provides a compressor.

[0006] The third aspect of this utility model proposes a refrigeration device.

[0007] In view of the above, the first aspect of this utility model provides a bearing housing assembly for use in a compressor. The bearing housing assembly includes a bearing housing and a bushing. The bearing housing is made of powder metallurgy material and has a mounting hole that extends along the axial direction of the compressor. The bushing is disposed in the mounting hole and has a shaft hole for mounting the crankshaft of the compressor.

[0008] The bearing housing assembly proposed in this utility model is used in a compressor. The bearing housing assembly includes a bearing housing and a bushing. The bearing housing is made of powder metallurgy material. By setting the bearing housing to be made of powder metallurgy material, the manufacturing cost of the bearing housing can be reduced, thus meeting the requirements of economic efficiency.

[0009] The bearing housing is provided with mounting holes that extend axially along the compressor and are used to insert components into the bearing housing.

[0010] The bushing is installed inside the mounting hole, and the bushing has a shaft hole for mounting the compressor crankshaft. The connection and transmission between the crankshaft and the bearing housing are achieved through the cooperation between the bushing and the crankshaft.

[0011] This invention effectively reduces the manufacturing cost of the entire bearing housing assembly by using a bearing housing made of powder metallurgy material, and protects the bearing housing through the bushing. The presence of the bushing prevents the inner bore of the bearing housing from directly rubbing against the crankshaft, thereby extending the service life of the bearing housing. The bushing bears the main friction and wear between the crankshaft and the bearing housing, and the wear problem of the inner bore of the powder metallurgy bearing housing is significantly improved.

[0012] For example, in use, the bearing housing assembly proposed in this utility model involves first fixing the bearing housing in a predetermined position on the compressor, then installing the bushing into the mounting hole of the bearing housing, and finally inserting the compressor crankshaft into the shaft hole within the bushing. After completing the above installation steps, the compressor can begin operation. During operation, the crankshaft rotates within the bushing, while the bushing is fixed to the compressor by the bearing housing. Since the bushing bears the main friction and wear between the crankshaft and the bearing housing, the powder metallurgy bearing housing is protected.

[0013] In summary, the bearing housing assembly proposed in this utility model bears the main friction and wear between the crankshaft and the bearing housing through the bushing, thus solving the problem of inner hole wear of the powder metallurgy bearing housing and extending the service life of the bearing housing.

[0014] In addition, the bearing housing assembly in the above-mentioned technical solution provided by this utility model may also have the following additional technical features:

[0015] Optionally, in some technical solutions of this utility model, a groove is provided between the bearing seat and the bushing, the groove being distributed in a ring along the circumference of the bushing and located at the first end of the mounting hole in the axial direction.

[0016] In this technical solution, powder metallurgy materials present significant challenges in machining annular grooves due to their unique physical and chemical properties. This invention addresses this by incorporating a groove between the bearing housing and the bushing. The groove is arranged in a ring along the circumference of the bushing and is located at the first axial end of the mounting hole, effectively reducing the machining difficulty of the annular groove and improving production efficiency.

[0017] In addition, the introduction of the annular groove provides a certain amount of elastic space for the contact surface between the bushing and the bearing housing, enhancing the flexibility of the bearing housing assembly and helping to better disperse stress when under load, thereby improving wear performance and extending service life.

[0018] The annular grooves also serve as oil storage spaces, storing a certain amount of lubricating oil. During compressor operation, as the crankshaft rotates, the lubricating oil can be effectively delivered to the friction contact surfaces, forming a good lubrication layer, further reducing friction and wear, and improving the operating efficiency and reliability of the bearing housing assembly.

[0019] Optionally, in some technical solutions of this utility model, the bearing seat is provided with a first wall surface, the first wall surface is located at the first end of the mounting hole in the axial direction, the first wall surface is recessed relative to the inner wall surface of the mounting hole towards the outer periphery of the bearing seat, and the first wall surface and the bushing form a groove.

[0020] In this technical solution, the present invention forms a groove by configuring the bearing housing. Specifically, the bearing housing has a first wall surface located at the first end of the mounting hole in the axial direction. The first wall surface is recessed relative to the inner wall of the mounting hole towards the outer periphery of the bearing housing, and the first wall surface and the bushing form a groove. Due to the recessed shape of the first wall surface, when the bushing is installed into the mounting hole, a certain gap is formed between the first wall surface and the outer wall of the bushing; this gap is the annular groove. The groove is formed relatively easily through the first wall surface.

[0021] Optionally, in some technical solutions of this utility model, the bushing is provided with a second wall surface, the second wall surface is located at the first end of the mounting hole in the axial direction, the second wall surface is recessed relative to the outer wall surface of the bushing towards the axis of the bearing seat, and the second wall surface and the inner wall surface of the mounting hole form a groove.

[0022] In this technical solution, the present invention forms a groove by designing the bushing. Specifically, the groove is formed by the second wall surface of the bushing and the inner wall surface of the bearing seat mounting hole.

[0023] The second wall surface is located at the first end of the bushing in the axial direction of the mounting hole, that is, on the side near the bearing housing mounting end. The second wall surface is recessed relative to the outer wall surface of the bushing in the axial direction of the bearing housing. When the bushing is installed into the mounting hole of the bearing housing, a certain gap is formed between the second wall surface and the inner wall surface of the mounting hole; this gap is the annular groove. By using the second wall surface to form a groove, the need to directly machine complex shapes onto the bearing housing or bushing is avoided, thereby reducing machining difficulty and cost.

[0024] Optionally, in some technical solutions of this utility model, the bearing housing is provided with a third wall surface, which is located at the first end of the mounting hole in the axial direction, and the third wall surface is recessed relative to the inner wall of the mounting hole towards the outer periphery of the bearing housing; the bushing is provided with a fourth wall surface, which is located at the first end of the mounting hole in the axial direction, and the fourth wall surface is recessed relative to the outer wall of the bushing towards the axis of the bearing housing; the third wall surface and the fourth wall surface form a groove.

[0025] In this technical solution, the present invention also adopts another method to form an annular groove, that is, the groove is formed by the third wall surface of the bearing seat and the fourth wall surface of the bushing.

[0026] The third wall surface is located at the first end of the bearing housing mounting hole in the axial direction, that is, the side close to the bearing housing mounting end. The third wall surface is recessed relative to the inner wall of the mounting hole towards the outer periphery of the bearing housing.

[0027] The fourth wall surface is located at the first end of the bushing in the axial direction of the mounting hole, corresponding to the third wall surface. The fourth wall surface is recessed relative to the outer wall surface of the bushing in the axial direction of the bearing housing, and mates with the third wall surface.

[0028] When the bushing is installed into the mounting hole of the bearing housing, a certain gap is formed between the third and fourth wall surfaces; this gap is the annular groove. Using the third and fourth wall surfaces to form a groove avoids the need to directly machine complex shapes onto the bearing housing or bushing.

[0029] In some technical solutions of this utility model, optionally, the width of the groove in the radial direction of the compressor is greater than or equal to 0.5 mm and less than or equal to 2 mm.

[0030] In this technical solution, specifically, the width of the groove in the radial direction of the compressor is set to be greater than or equal to 0.5 mm and less than or equal to 2 mm. Within this width range, the groove can ensure that there is sufficient contact area between the crankshaft and the bushing. Sufficient contact area can disperse stress, prevent local overload, and thus improve the stability of the contact.

[0031] In some technical solutions of this utility model, optionally, the depth of the groove in the axial direction of the compressor is greater than or equal to 3 mm and less than or equal to 10 mm.

[0032] In this technical solution, the groove is between 3 mm and 10 mm in the axial direction of the compressor. Within this depth range, the groove provides greater stability for the fit between the crankshaft and the bushing. Deeper grooves can more effectively distribute stress and prevent fit failure due to localized overload.

[0033] In some technical solutions of this utility model, optionally, the bushing and the mounting hole are interference-fitted.

[0034] In this technical solution, the interference fit between the bushing and the mounting hole utilizes the elasticity of the material to enlarge and deform the hole so that it fits onto the shaft. When the hole returns to its original state, it generates a clamping force on the shaft, making the two parts tightly connected.

[0035] In some technical solutions of this utility model, optionally, the thickness of the bushing in the radial direction of the compressor is greater than or equal to 1 mm and less than or equal to 3 mm.

[0036] In this technical solution, the thickness of the bushing is set to be greater than or equal to 1 mm and less than or equal to 3 mm, which can significantly improve the contact force between the crankshaft and the bushing and improve the reliability of the compressor.

[0037] In some technical solutions of this utility model, the bushing may optionally be made of steel or casting.

[0038] In this technical solution, on the one hand, the bushing is made of steel, and the steel bushing has high strength and hardness, and can withstand greater pressure and torque.

[0039] On the other hand, the bushing is a casting, which can be mass-produced through casting processes, reducing manufacturing costs. Cast bushings are typically made of lightweight alloy materials, making them relatively light in weight and helping to reduce the overall weight and energy consumption of the equipment.

[0040] In some technical solutions of this utility model, the bushing may optionally include a body; a heat treatment layer covering the surface of the body; or a surface treatment layer covering the surface of the body.

[0041] In this technical solution, the bushing includes a body, which is the basic structure of the bushing.

[0042] The heat-treated layer is a material applied to the surface of the bushing body, formed through a heat treatment process. The heat-treated layer improves the bushing's hardness, strength, wear resistance, and corrosion resistance, thereby extending its service life.

[0043] The surface treatment layer is another material layer applied to the surface of the bushing body, formed through a surface treatment process. The surface treatment layer can improve the bushing's wear resistance, corrosion resistance, and lubrication performance.

[0044] The second aspect of this utility model provides a compressor, which includes a bearing housing assembly as described in any of the above technical solutions.

[0045] The compressor proposed in this utility model includes the bearing housing assembly as described in any of the above technical solutions, and therefore has all the beneficial effects of the bearing housing assembly in any of the above technologies, which will not be elaborated here.

[0046] In some technical solutions of this utility model, the compressor further includes a housing, a cylinder, a piston, and a crankshaft. A bearing housing assembly is disposed within the housing, the cylinder is disposed within the housing, and the cylinder has a compression chamber; the piston is disposed within the cylinder; the crankshaft passes through a shaft hole and is connected to the piston.

[0047] In this technical solution, the housing is the supporting and protective structure of the whole machine, supporting and fixing the various components inside the compressor and preventing them from being subjected to external impacts and damage.

[0048] The cylinder is one of the key components of a compressor. Inside the cylinder is a compression chamber used to compress gas. The piston is another key component of the compressor, working in conjunction with the cylinder to compress gas through reciprocating motion. The crankshaft is the transmission component in the compressor, transmitting power to the piston through rotational motion, causing it to reciprocate. The bearing housing assembly is located within the housing, with the crankshaft passing through the shaft bore and connecting to the piston, thus ensuring stable operation of the compressor.

[0049] The third aspect of this utility model provides a refrigeration device, which includes a bearing housing assembly as described in any of the above technical solutions; or a compressor as described in any of the above technical solutions.

[0050] The refrigeration equipment proposed in the third aspect of this utility model includes the bearing housing assembly as described in any of the above technical solutions, or the compressor as described in any of the above technical solutions, and therefore has all the beneficial effects of the bearing housing assembly and the compressor in any of the above technical solutions, which will not be elaborated here.

[0051] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0052] 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:

[0053] Figure 1 One of the structural schematic diagrams of a bearing housing assembly according to an embodiment of the present invention is shown;

[0054] Figure 2 A schematic diagram of the bearing housing structure of a bearing housing assembly according to an embodiment of the present invention is shown;

[0055] Figure 3 A schematic diagram of the structure of a compressor according to an embodiment of the present invention is shown;

[0056] Figure 4 A second schematic diagram of the structure of a bearing housing assembly according to an embodiment of the present invention is shown;

[0057] Figure 5 A third schematic diagram of the structure of a bearing housing assembly according to an embodiment of the present invention is shown;

[0058] Figure 6 A partial structural schematic diagram of a bearing housing assembly according to an embodiment of the present invention is shown;

[0059] Figure 7One of the structural schematic diagrams of the bushing of a bearing housing assembly according to an embodiment of the present invention is shown;

[0060] Figure 8 The second schematic diagram shows the structure of the bushing of a bearing housing assembly according to an embodiment of the present invention.

[0061] in, Figures 1 to 8 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0062] 10 Compressor, 100 Bearing housing assembly, 110 Bearing housing, 112 Mounting hole, 114 First end, 116 Inner wall surface, 118 First wall surface, 120 Third wall surface, 130 Bushing, 131 Body, 132 Shaft hole, 134 Second wall surface, 136 Fourth wall surface, 138 Heat treatment layer, 139 Surface treatment layer, 140 Groove, 200 Housing, 300 Cylinder, 310 Compression chamber, 400 Piston, 500 Crankshaft. Detailed Implementation

[0063] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0064] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0065] The following reference Figures 1 to 8 This invention describes a bearing housing assembly 100, a compressor 10, and a refrigeration device according to some embodiments of the present invention.

[0066] like Figure 1 As shown, in one embodiment of this utility model, a bearing housing assembly 100 is provided. The bearing housing assembly 100 is used for a compressor 10. The bearing housing assembly 100 includes a bearing housing 110 and a bushing 130. The bearing housing 110 is a bearing housing made of powder metallurgy material. The bearing housing 110 is provided with a mounting hole 112, which extends along the axial direction of the compressor 10. The bushing 130 is disposed in the mounting hole 112 and is provided with a shaft hole 132 for mounting the crankshaft 500 of the compressor 10.

[0067] In this embodiment, the bearing housing assembly 100 proposed by this utility model is used in the compressor 10, which can solve the wear resistance problem encountered by the powder metallurgy bearing housing 110 in practical applications, while maintaining the advantage of manufacturing cost.

[0068] like Figure 1 As shown, the bearing housing assembly 100 includes a bearing housing 110 and a bushing 130. The bearing housing 110 is a bearing housing made of powder metallurgy material. By setting the bearing housing to be made of powder metallurgy material, the manufacturing cost of the bearing housing 110 can be reduced, thus meeting the requirements of economic benefits.

[0069] like Figure 2 and Figure 3 As shown, the bearing housing 110 is provided with a mounting hole 112, which is along the axial direction of the compressor 10 (e.g., ...). Figure 3 Extending in the direction indicated by the middle arrow D, the mounting hole 112 is used for inserting a component into it, thereby being mounted on the bearing housing 110.

[0070] like Figure 3 As shown, the bushing 130 is disposed in the mounting hole 112, and the bushing 130 is provided with a shaft hole 132 for mounting the crankshaft 500 of the compressor 10. Through the cooperation between the bushing 130 and the crankshaft 500, the connection and transmission between the crankshaft 500 and the bearing housing 110 are realized.

[0071] This invention effectively reduces the manufacturing cost of the entire bearing housing assembly 100 by using a bearing housing made of powder metallurgy material, and protects the bearing housing 110 through the bushing 130. The presence of the bushing 130 prevents the inner hole of the bearing housing 110 from being directly exposed to the friction of the crankshaft 500, thereby extending the service life of the bearing housing 110. The bushing 130 bears the main friction and wear between the crankshaft 500 and the bearing housing 110, thus significantly improving the wear problem of the inner hole of the powder metallurgy bearing housing.

[0072] For example, such as Figure 3 As shown, in use, the bearing housing assembly 100 proposed in this utility model involves first fixing the bearing housing 110 in a predetermined position on the compressor 10, then installing the bushing 130 into the mounting hole 112 of the bearing housing 110, and finally inserting the crankshaft 500 of the compressor 10 into the shaft hole 132 within the bushing 130. After completing the above installation steps, the compressor 10 can begin operation. During operation, the crankshaft 500 rotates within the bushing 130, while the bushing 130 is fixed to the compressor 10 via the bearing housing 110. Since the bushing 130 bears the main friction and wear between the crankshaft 500 and the bearing housing 110, the powder metallurgy bearing housing 110 is protected.

[0073] In summary, the bearing housing assembly 100 proposed in this utility model bears the main friction and wear between the crankshaft 500 and the bearing housing 110 through the bushing 130. Therefore, the problem of inner hole wear of the powder metallurgy bearing housing is solved, and the service life of the bearing housing 110 is extended.

[0074] like Figure 1 As shown, in some embodiments of the present invention, optionally, a groove 140 is provided between the bearing seat 110 and the bushing 130. The groove 140 is distributed in a ring along the circumference of the bushing 130 and is located at the first end 114 of the mounting hole 112 in the axial direction.

[0075] In this embodiment, powder metallurgy materials are difficult to process into annular grooves due to their special physical and chemical properties. Therefore, this invention provides a groove 140 between the bearing seat 110 and the bushing 130. The groove 140 is circumferentially aligned with the bushing 130 (e.g., ...). Figure 1 The grooves (in the direction indicated by the middle arrow A) are arranged in a ring and located at the first end 114 of the mounting hole 112 in the axial direction. The grooves 140 effectively reduce the processing difficulty of the annular grooves and improve production efficiency.

[0076] In addition, the introduction of the annular groove 140 provides a certain elastic space for the contact surface between the bushing 130 and the bearing housing 110, enhances the flexibility of the bearing housing assembly 100, helps to better disperse stress when under force, thereby improving wear performance and extending service life.

[0077] The annular groove 140 can also serve as an oil storage space, storing a certain amount of lubricating oil. During the operation of the compressor 10, as the crankshaft 500 rotates, the lubricating oil can be effectively delivered to the friction contact surface, forming a good lubrication layer, further reducing friction and wear, and improving the operating efficiency and reliability of the bearing housing assembly 100.

[0078] like Figure 1 As shown, in some embodiments of the present invention, optionally, the bearing seat 110 is provided with a first wall surface 118, the first wall surface 118 is located at the first end 114 of the mounting hole 112 in the axial direction, the first wall surface 118 is recessed towards the outer periphery of the bearing seat 110 relative to the inner wall surface 116 of the mounting hole 112, and the first wall surface 118 and the bushing 130 form a groove 140.

[0079] In this embodiment, the present invention forms a groove 140 by configuring the bearing seat 110. Specifically, the bearing seat 110 is provided with a first wall surface 118, which is located at the first end 114 of the mounting hole 112 in the axial direction. The first wall surface 118 is recessed towards the outer periphery of the bearing seat 110 relative to the inner wall surface 116 of the mounting hole 112. The first wall surface 118 and the bushing 130 surround the groove 140. Due to the recessed shape of the first wall surface 118, when the bushing 130 is installed into the mounting hole 112, a certain gap is formed between the first wall surface 118 and the outer wall of the bushing 130. This gap is the annular groove 140. The groove 140 is formed relatively easily by using the first wall surface 118, reducing the processing difficulty.

[0080] like Figure 2 and Figure 3 As shown, in some embodiments of the present invention, optionally, the bushing 130 is provided with a second wall surface 134, the second wall surface 134 is located at the first end 114 of the mounting hole 112 in the axial direction, the second wall surface 134 is recessed relative to the outer wall surface of the bushing 130 towards the axis of the bearing seat 110, and the second wall surface 134 and the inner wall surface 116 of the mounting hole 112 form a groove 140.

[0081] In this embodiment, the present invention proposes to form a groove 140 by designing the bushing 130. Specifically, the groove 140 is formed by the second wall surface 134 of the bushing 130 and the inner wall surface 116 of the mounting hole 112 of the bearing seat 110.

[0082] The second wall surface 134 is located at the first end 114 of the bushing 130 in the axial direction of the mounting hole 112, that is, on the side near the mounting end of the bearing housing 110. The second wall surface 134 is relative to the axis of the bearing housing 110 facing the outer wall of the bushing 130 (e.g., ...). Figure 4 As shown by line B in the diagram, the second wall surface 134 is recessed in the direction of the mounting hole 112 of the bearing housing 110. When the bushing 130 is installed into the mounting hole 112 of the bearing housing 110, a certain gap is formed between the second wall surface 134 and the inner wall surface 116 of the mounting hole 112. This gap is the annular groove 140. By using the second wall surface 134 to form the groove 140, the need to directly process complex shapes on the bearing housing 110 or the bushing 130 is avoided, thereby reducing the processing difficulty and cost.

[0083] like Figure 2 and Figure 4As shown, in some embodiments of this utility model, optionally, the bearing housing 110 is provided with a third wall surface 120, which is located at the first end 114 of the mounting hole 112 in the axial direction, and the third wall surface 120 is recessed towards the outer periphery of the bearing housing 110 relative to the inner wall surface 116 of the mounting hole 112; the bushing 130 is provided with a fourth wall surface 136, which is located at the first end 114 of the mounting hole 112 in the axial direction, and the fourth wall surface 136 is recessed towards the axis of the bearing housing 110 relative to the outer wall surface of the bushing 130; the third wall surface 120 and the fourth wall surface 136 form a groove 140.

[0084] In this embodiment, the present invention also adopts another method to form the annular groove 140, that is, the groove 140 is formed by the third wall surface 120 of the bearing seat 110 and the fourth wall surface 136 of the bushing 130.

[0085] The third wall surface 120 is located at the first end 114 of the mounting hole 112 in the axial direction of the bearing housing 110, that is, on the side close to the mounting end of the bearing housing 110. The third wall surface 120 is recessed towards the outer periphery of the bearing housing 110 relative to the inner wall surface 116 of the mounting hole 112.

[0086] The fourth wall surface 136 is located at the first end 114 of the bushing 130 in the axial direction of the mounting hole 112, corresponding to the third wall surface 120. The fourth wall surface 136 is positioned relative to the axis of the bearing housing 110 (e.g., the outer wall of the bushing 130 faces the bearing seat 110). Figure 5 The line (as shown in B) is recessed in the direction of the indentation, which cooperates with the third wall surface 120.

[0087] When the bushing 130 is installed into the mounting hole 112 of the bearing housing 110, a certain gap is formed between the third wall surface 120 and the fourth wall surface 136, which is the annular groove 140. By using the third wall surface 120 and the fourth wall surface 136 to form the groove 140, the need to directly machine complex shapes on the bearing housing 110 or the bushing 130 is avoided.

[0088] like Figure 2 , Figure 3 and Figure 6 As shown, in some embodiments of the present invention, optionally, the width of the groove 140 in the radial direction of the compressor 10 is greater than or equal to 0.5 mm and less than or equal to 2 mm.

[0089] In this embodiment, specifically, the groove 140 is in the radial direction of the compressor 10 (e.g., Figure 3 The width D3 in the direction indicated by the middle arrow C is set to be greater than or equal to 0.5 mm and less than or equal to 2 mm. Within this width range, the groove 140 can ensure that there is sufficient contact area between the crankshaft 500 and the bushing 130, thereby dispersing stress, preventing local overload, and improving the stability of the contact.

[0090] By precisely controlling the width of the groove 140, the fit clearance between the crankshaft 500 and the bushing 130 can be further optimized, reducing friction and wear and improving contact force.

[0091] For example, the radial width of the groove 140 on the compressor 10 can be 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, or 2.0 mm.

[0092] like Figure 2 , Figure 3 and Figure 6 As shown, in some embodiments of the present invention, optionally, the depth of the groove 140 in the axial direction of the compressor 10 is greater than or equal to 3 mm and less than or equal to 10 mm.

[0093] In this embodiment, the groove 140 is in the axial direction of the compressor 10 (e.g., Figure 3 The depth D1 in the direction indicated by the middle arrow D is between 3 mm and 10 mm. Within this depth range, the groove 140 provides additional stability to the fit between the crankshaft 500 and the bushing 130. A deeper groove 140 can more effectively distribute stress and prevent fit failure due to local overload.

[0094] Furthermore, the depth design of the groove 140 in this invention helps improve the lubrication conditions between the crankshaft 500 and the bushing 130. A deeper groove 140 can hold more lubricating oil, forming a more continuous lubrication layer, thereby reducing friction and wear.

[0095] For example, the depth of the groove 140 in the axial direction of the compressor 10 can be 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm or 10 mm.

[0096] In some embodiments of this utility model, the bushing 130 may optionally be interference-fitted with the mounting hole 112.

[0097] In this embodiment, the interference fit between the bushing 130 and the mounting hole 112 utilizes the elasticity of the material to enlarge and deform the hole, which then fits onto the shaft. When the hole returns to its original shape, it generates a clamping force on the shaft, thus tightly connecting the two parts.

[0098] An interference fit, also known as a tight fit, refers to a fit between mating surfaces where there is a certain amount of interference. In other words, the actual size of the hole is smaller than the actual size of the shaft. During assembly, a certain external force or methods such as heating or cooling are required to expand the hole or contract the shaft to achieve a tight fit.

[0099] An interference fit provides a large clamping force, ensuring no relative movement between the bushing 130 and the mounting hole 112. This is suitable for applications requiring the transmission of high torque, high-speed rotation, or exposure to significant impact loads. Due to the clamping force generated by the interference fit, the connection between the bushing 130 and the mounting hole 112 is very stable and not easily loosened by vibration or impact. The interference fit reduces relative movement between the bushing 130 and the mounting hole 112, thereby reducing wear and extending service life.

[0100] like Figure 2 and Figure 6 As shown, in some embodiments of this utility model, optionally, the thickness of the bushing 130 in the radial direction of the compressor 10 is greater than or equal to 1 mm and less than or equal to 3 mm.

[0101] In this embodiment, the thickness D2 of the bushing 130 is set to be between 1 mm and 3 mm, which can significantly improve the contact force between the crankshaft 500 and the bushing 130 and improve the reliability of the compressor 10.

[0102] Specifically, within this thickness range, the bushing 130 can ensure sufficient contact area with the crankshaft 500, and sufficient contact area can distribute stress, prevent local overload, and thus improve the stability of the contact.

[0103] For example, the thickness of the bushing 130 in the radial direction of the compressor 10 can be 1 mm, 2 mm or 3 mm.

[0104] In some embodiments of this utility model, the bushing 130 may optionally be made of steel or a casting.

[0105] In this embodiment, the bushing 130 is made of steel, which has high strength and hardness and can withstand greater pressure and torque.

[0106] On the other hand, the bushing 130 is a casting, which can be mass-produced through casting processes, reducing manufacturing costs. The casting bushing 130 is typically made of lightweight alloy materials, resulting in a relatively light weight, which helps reduce the overall weight and energy consumption of the equipment.

[0107] like Figure 7 and Figure 8 As shown, in some embodiments of the present invention, optionally, the bushing 130 includes a body 131; a heat treatment layer 138 covering the surface of the body 131; or a surface treatment layer 139 covering the surface of the body 131.

[0108] In this embodiment, the bushing 130 includes a body 131, which is the basic structure of the bushing 130.

[0109] like Figure 7 As shown, the heat treatment layer 138 is a layer of material covering the surface of the body 131, formed through a heat treatment process. The heat treatment layer 138 can improve the hardness, strength, wear resistance and corrosion resistance of the bushing 130, thereby extending the service life of the bushing 130.

[0110] like Figure 8 As shown, the surface treatment layer 139 is another material layer covering the surface of the body 131, formed through a surface treatment process. The surface treatment layer 139 can improve the wear resistance, corrosion resistance and lubrication performance of the bushing 130.

[0111] In one embodiment of the present invention, a compressor 10 is provided, which includes a bearing housing assembly 100 as described in any of the above embodiments.

[0112] In this embodiment, the compressor 10 proposed by the present invention includes the bearing housing assembly 100 as in any of the above embodiments, and therefore has all the beneficial effects of the bearing housing assembly 100 in any of the above technologies, which will not be elaborated here.

[0113] like Figure 2 As shown, in some embodiments of this utility model, the compressor 10 may optionally include a housing 200, a cylinder 300, a piston 400, and a crankshaft 500. A bearing housing assembly 100 is disposed within the housing 200, and the cylinder 300 is disposed within the housing 200, with a compression chamber 310 provided in the cylinder 300; the piston 400 is disposed within the cylinder 300; the crankshaft 500 passes through a shaft hole 132 and is connected to the piston 400.

[0114] In this embodiment, the housing 200 is the supporting and protective structure of the whole machine, supporting and fixing the various components inside the compressor 10 and preventing them from being subjected to external impacts and damage.

[0115] Cylinder 300 is one of the key components of compressor 10. Cylinder 300 contains a compression chamber 310 for compressing gas. Piston 400 is another key component of compressor 10, working in conjunction with cylinder 300 to compress gas through reciprocating motion. Crankshaft 500 is the transmission component of compressor 10, transmitting power to piston 400 through rotational motion, causing it to reciprocate. Bearing housing assembly 100 is disposed within housing 200, and crankshaft 500 passes through shaft hole 132 and connects to piston 400, thereby enabling compressor 10 to operate stably.

[0116] In one embodiment of the present invention, the present invention also provides a refrigeration device, which includes a bearing housing assembly 100 as described in any of the above embodiments; or a compressor 10 as described in any of the above embodiments.

[0117] In this embodiment, the refrigeration device proposed by this utility model includes the bearing housing assembly 100 as in any of the above embodiments, or the compressor 10 as in any of the above embodiments, and therefore has all the beneficial effects of the bearing housing assembly 100 and the compressor 10 in any of the above embodiments, which will not be elaborated here.

[0118] Specifically, the refrigeration equipment includes air conditioners, refrigerators, wine coolers, or freezers.

[0119] In the claims, description, and accompanying drawings of this utility model, the term "plural" refers to two or more objects. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description process, and are not intended to indicate or imply that the device or element referred to must have the described specific orientation, or be constructed and operated in a specific orientation. Therefore, these descriptions should not be construed as limitations on this utility model. The terms "connect," "install," "fix," etc., should be interpreted broadly. For example, "connect" can be a fixed connection between multiple objects, a detachable connection between multiple objects, or an integral connection; it can be a direct connection between multiple objects or an indirect connection between multiple objects through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood based on the specific circumstances described above.

[0120] In the claims, description, and drawings of this utility model, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In the claims, description, and drawings of this utility model, the illustrative expressions of the above terms do 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 one or more embodiments or examples.

[0121] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A bearing housing assembly, characterized in that, The bearing housing assembly is used in a compressor, and the bearing housing assembly includes: The bearing housing is made of powder metallurgy material and has mounting holes that extend along the axial direction of the compressor. A bushing is disposed within the mounting hole and has a shaft hole for mounting the crankshaft of the compressor.

2. The bearing housing assembly according to claim 1, characterized in that, A groove is provided between the bearing housing and the bushing, and the groove is distributed in a ring along the circumference of the bushing, located at the first end of the mounting hole in the axial direction.

3. The bearing housing assembly according to claim 2, characterized in that, The bearing housing is provided with a first wall surface, which is located at the first end of the mounting hole in the axial direction. The first wall surface is recessed relative to the inner wall surface of the mounting hole on the outer periphery of the bearing housing, and the first wall surface and the bushing form the groove.

4. The bearing housing assembly according to claim 2, characterized in that, The bushing is provided with a second wall surface, which is located at the first end of the mounting hole in the axial direction. The second wall surface is recessed relative to the outer wall surface of the bushing towards the axis of the bearing seat, and the second wall surface and the inner wall surface of the mounting hole form the groove.

5. The bearing housing assembly according to claim 2, characterized in that, The bearing housing is provided with a third wall surface, which is located at the first end of the mounting hole in the axial direction. The third wall surface is recessed relative to the inner wall surface of the mounting hole on the outer periphery of the bearing housing. The bushing is provided with a fourth wall surface, which is located at the first end of the mounting hole in the axial direction. The fourth wall surface is recessed relative to the outer wall surface of the bushing towards the axis of the bearing seat. The third and fourth walls enclose the groove.

6. The bearing housing assembly according to claim 2, characterized in that, The width of the groove in the radial direction of the compressor is greater than or equal to 0.5 mm and less than or equal to 2 mm.

7. The bearing housing assembly according to claim 2, characterized in that, The groove has a depth of 3 mm or more and less than or equal to 10 mm in the axial direction of the compressor.

8. The bearing housing assembly according to claim 1, characterized in that, The bushing is interference-fitted with the mounting hole.

9. The bearing housing assembly according to claim 1, characterized in that, The thickness of the bushing in the radial direction of the compressor is greater than or equal to 1 mm and less than or equal to 3 mm.

10. The bearing housing assembly according to any one of claims 1 to 9, characterized in that, The bushing is made of steel or casting.

11. The bearing housing assembly according to any one of claims 1 to 9, characterized in that, The bushing includes: ontology; A heat treatment layer, the heat treatment layer covering the surface of the body; or A surface treatment layer that covers the surface of the body.

12. A compressor, characterized in that, Includes the bearing housing assembly as described in any one of claims 1 to 11.

13. The compressor according to claim 12, characterized in that, Also includes: Housing, wherein the bearing housing assembly is disposed within the housing; A cylinder, wherein the cylinder is disposed within the housing and the cylinder is provided with a compression chamber; A piston, which is disposed inside the cylinder; A crankshaft, which passes through the shaft hole and is connected to the piston.

14. A refrigeration device, characterized in that, include: The bearing housing assembly as described in any one of claims 1 to 11; or The compressor as described in claim 12 or 13.

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