Compressor pump body and compressor

Abstract

The compressor pump body comprises a crankshaft and a compression mechanism, the compression mechanism comprises an air cylinder and a first bearing, the first bearing is connected to the air cylinder, and one end of the crankshaft penetrates through the air cylinder and is connected with the first bearing in a sleeving mode; a plurality of grooves are formed in the first bearing in a sunken mode and located in the surface, away from the air cylinder, of the first bearing. According to the compressor, the problems that manufacturing raw materials of the compressor are wasted and the logistics transportation cost of the compressor is increased due to the fact that the weight of the lower bearing in the compressor is large are solved.

Description

Technical Field

[0001] This application relates to the field of compressor technology, and more specifically, to a compressor pump body and a compressor. Background Technology

[0002] In a rotary compressor, the cylinder is equipped with an upper bearing and a lower bearing, both of which support the crankshaft. Currently, the lower bearing in rotary compressors has a simple and bulky structure. The large weight of the lower bearing leads to a waste of raw materials in compressor manufacturing and increases logistics and transportation costs, which is detrimental to lightweight design and green energy-saving manufacturing of compressor products. Summary of the Invention

[0003] The main objective of this application is to provide a compressor pump body and a compressor to solve the problems of waste of raw materials in compressor manufacturing and increased logistics and transportation costs caused by the large weight of the lower bearing in the compressor.

[0004] According to one aspect of this application, a compressor pump body is provided, comprising:

[0005] Crankshaft;

[0006] A compression mechanism, comprising a cylinder and a first bearing, wherein the first bearing is connected to the cylinder, and one end of the crankshaft passes through the cylinder and is sleeved with the first bearing;

[0007] The first bearing has multiple recesses, which are located on the surface of the first bearing opposite to the cylinder.

[0008] Furthermore, the first bearing includes:

[0009] The body includes a first surface facing away from the cylinder, a first connecting hole is provided through the body along the axial direction of the crankshaft, the first connecting hole is sleeved with the crankshaft, and the side of the body away from the first connecting hole is connected to the cylinder along the radial direction of the first connecting hole.

[0010] The plurality of grooves are arranged at intervals around the first connecting hole on the first surface.

[0011] Furthermore, the plurality of grooves are arranged at intervals in at least two coaxially arranged annular structures, and in two adjacent annular structures, the groove in one annular structure is at least partially offset from the groove in the other annular structure.

[0012] Furthermore, along the axial direction of the first connecting hole, a plurality of second connecting holes are also provided through the body. A plurality of flat parts are provided in the outermost annular structure, and each flat part is located between two adjacent grooves. Along the axial direction of the first connecting hole, the thickness of the body in the flat part is greater than the thickness of the body at the bottom of the groove in the outermost annular structure. Along the radial direction of the first connecting hole, a plurality of second connecting holes are located in a plurality of flat parts in a corresponding manner. The cylinder is connected to the body through a locking member and the second connecting holes.

[0013] Furthermore, the body has an annular thinning region located between the first connecting hole and the outermost annular structure. The annular thinning region has at least one annular structure. Along the axial direction of the first connecting hole, the thickness of the annular thinning region is less than the thickness of the body at the flattened portion, and the flattened portion protrudes from the surface of the annular thinning region away from the cylinder.

[0014] Furthermore, the groove in the annular structure adjacent to the outermost annular structure is aligned with the flattened portion.

[0015] Furthermore, the grooves within the same annular structure have the same groove depth along the axial direction of the first connecting hole, and along the radial direction of the first connecting hole, the groove depth of the groove in the annular structure farther from the first connecting hole is greater than the groove depth of the groove in the annular structure closer to the first connecting hole.

[0016] Furthermore, along the radial direction of the first connecting hole, the groove of the outermost annular structure extends away from the first connecting hole and penetrates the outer peripheral surface of the body.

[0017] Furthermore, along the axial direction of the first connecting hole, the body has a first thickness, which is the thickness of the region of the annular thinning zone located in the groove, and the first thickness is not less than 5.0 mm and not greater than 6.6 mm.

[0018] Furthermore, along the axial direction of the first connecting hole, the body also has a second thickness, which is the thickness of the body located at the flat portion, and the ratio between the second thickness and the first thickness is not less than 1.04 and not greater than 1.39.

[0019] Furthermore, along the axial direction of the first connecting hole, the body also has a third thickness, which is the thickness of the annular thinning area at the bottom of the groove, and the ratio between the first thickness and the third thickness is not less than 1.0 and not greater than 1.4.

[0020] Furthermore, along the axial direction of the first connecting hole, the body also has a fourth thickness, which is the thickness of the body at the bottom of the groove in the outermost annular structure, and the ratio between the first thickness and the fourth thickness is not less than 1.0 and not greater than 5.0.

[0021] Furthermore, the number of grooves in each of the different annular structures is N, where N is not less than four and not more than seven.

[0022] On the other hand, this application also provides a compressor, which includes the compressor pump body described above.

[0023] The compressor pump body provided in this application includes a crankshaft and a compression mechanism. The compression mechanism includes a cylinder and a first bearing. The first bearing is connected to the cylinder, and one end of the crankshaft passes through the cylinder and is sleeved with the first bearing. During the reciprocating motion of the piston within the cylinder driven by the eccentric portion of the crankshaft located inside the cylinder, the first bearing provides stable support to the distal end of the crankshaft. The surface of the first bearing facing away from the cylinder has multiple recesses to reduce the weight of the lower bearing, saving on raw material consumption during manufacturing. This significantly reduces the manufacturing cost and logistics expenses of compressors using this compressor pump body, achieving lightweight design and energy-saving manufacturing of the compressor product, and possessing significant socio-economic value. Attached Figure Description

[0024] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0025] Figure 1 This is a schematic diagram of the compressor disclosed in this application;

[0026] Figure 2 for Figure 1 A three-dimensional structural diagram of the first bearing in the middle;

[0027] Figure 3 This is a schematic diagram of the structure of the first bearing from another angle;

[0028] Figure 4 This is the front view of the first bearing;

[0029] Figure 5 for Figure 4 AA section view of the first bearing in the middle;

[0030] Figure 6 This is another structural schematic diagram of the first bearing.

[0031] The above figures include the following reference numerals:

[0032] 10. Housing; 20. Motor; 21. Stator; 22. Rotor; 30. Compressor pump body; 31. Crankshaft; 32. Cylinder; 33. First bearing; 331. Groove; 311. First groove; 312. Second groove; 332. First surface; 333. First connecting hole; 334. Second connecting hole; 335. Flattened part; 336. Annular thinning zone; 34. Second bearing; 35. Silencer. Detailed Implementation

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0035] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0036] A rotary compressor is a commonly used compression device in refrigeration and air conditioning systems. A rotary compressor includes a housing 10 and a motor 20 and compressor pump body 30 located within the housing 10. The compressor pump body 30 mainly includes a crankshaft 31, a cylinder 32, and two bearings 33 and 34 connected to the two sides of the cylinder 32 to support the crankshaft 31. The first bearing 33 is commonly referred to as the lower bearing or auxiliary bearing, and the second bearing 34 is the upper bearing or main bearing. Besides its supporting function, the upper bearing is also responsible for exhaust; therefore, it is usually equipped with an exhaust valve seat, a muffler 35, etc. The lower bearing mainly supports the distal end of the crankshaft 31 extending from the cylinder 32. The upper and lower bearings work together to prevent the rotating crankshaft 31 from twisting or shifting, improving the rotational accuracy and stability of the crankshaft 31. The motor 20 is used to drive the crankshaft 31 to rotate. The crankshaft 31 has an eccentric part, which is connected to the piston in the cylinder 32 through a connecting rod to drive the piston to reciprocate to compress the refrigerant gas entering the cylinder 32.

[0037] As a precision equipment product, compressors still face high manufacturing and transportation costs due to the market's emphasis on precision. Therefore, there is still room for improvement in compressor structure. Through in-depth research, the inventors of this invention have discovered that the current lower bearing structure in compressors is simple and bulky. The significant weight of the lower bearing leads to waste of raw materials in compressor manufacturing and increases logistics costs, hindering lightweight design and energy-efficient manufacturing. Therefore, aside from necessary bolt holes and standard thickness dimensions, the structure of the existing compressor's lower bearing still has room for improvement.

[0038] This invention, while maintaining the original mechanical properties of the lower bearing, aims to achieve a lightweight design for the lower bearing, reducing the consumption of raw materials in its manufacture. This addresses the problem of the large weight of the lower bearing in the compressor causing waste of manufacturing materials and increasing logistics and transportation costs. To this end, the first embodiment of this invention provides a compressor pump body 30, please refer to [link to previous text]. Figures 1 to 5 The compressor pump body 30 includes a crankshaft 31 and a compression mechanism. The compression mechanism includes a cylinder 32 and a first bearing 33. The first bearing 33 is connected to the cylinder 32. One end of the crankshaft 31 passes through the cylinder 32 and is sleeved with the first bearing 33. In this embodiment, the first bearing 33 is the lower bearing mentioned above.

[0039] Please see Figures 2 to 4The first bearing 33 has multiple recessed grooves 331 located on the surface of the first bearing 33 facing away from the cylinder 32. In this embodiment, providing multiple grooves 331 on the surface of the first bearing 33 facing away from the cylinder 32 not only does not affect the sealing performance after the first bearing 33 and cylinder 32 are assembled, but also reduces the weight of the first bearing 33, saving the amount of raw materials required for manufacturing the first bearing 33, reducing the manufacturing and transportation costs of the compressor with the first bearing 33, and achieving energy conservation and emission reduction.

[0040] As can be seen, the compressor pump body 30 provided in this embodiment includes a crankshaft 31 and a compression mechanism. The compression mechanism includes a cylinder 32 and a first bearing 33. The first bearing 33 is connected to the cylinder 32. One end of the crankshaft 31 passes through the cylinder 32 and is sleeved with the first bearing 33. During the reciprocating motion of the piston in the cylinder 32 driven by the eccentric part of the crankshaft 31 located in the cylinder 32, the distal end of the crankshaft 31 is stably supported by the first bearing 33. The surface of the first bearing 33 facing away from the cylinder 32 is recessed with multiple grooves 331. The arrangement of these grooves 331 reduces the weight of the lower bearing, saving the amount of raw materials required for manufacturing the lower bearing. This significantly reduces the manufacturing cost and logistics costs of the compressor using this compressor pump body 30, achieving lightweight design and green energy-saving manufacturing of the compressor product, and possessing good socio-economic value.

[0041] Specifically, in this embodiment, the first bearing 33 includes a body, which includes a first surface 332 facing away from the cylinder 32. A first connecting hole 333 is provided through the body along the axial direction of the crankshaft 31, and the first connecting hole 333 is sleeved with the crankshaft 31 to support it. Along the radial direction of the first connecting hole 333, the side of the body away from the first connecting hole 333 is connected to the cylinder 32. Multiple grooves 331 are provided on the first surface 332, and are spaced apart around the first connecting hole 333. Thus, the spaced arrangement of multiple grooves 331 around the first connecting hole 333 not only reduces the weight of the first bearing 33, but also reduces the inertial force during crankshaft 31 rotation, thereby reducing vibration of the first bearing 33. At the same time, the spaced grooves 331 also help improve the dynamic balance between the crankshaft 31 and the first bearing 33, increasing the stability of the crankshaft 31 during rotation. Typically, the first connecting hole 333 in the body is opened in the protrusion protruding from the first surface 332 to improve the stability and reliability of the first bearing 33 supporting the crankshaft 31.

[0042] In addition, the multiple grooves 331 arranged at intervals around the first connecting hole 333 can also disperse the stress borne by the first bearing 33, avoid stress concentration in a local area of ​​the first bearing 33, thereby improving the fatigue resistance of the first bearing 33, and thus reducing the maintenance frequency of the compressor pump body 30 and increasing the service life of the compressor pump body 30.

[0043] Therefore, in this embodiment, multiple grooves 331 are arranged at intervals on the first surface 332, which reduces the weight of the first bearing 33 and thus reduces the production cost of the first bearing 33, without affecting the overall performance of the compressor with the first bearing 33.

[0044] like Figure 2 and Figure 4 As shown, in this embodiment, multiple grooves 331 are arranged at intervals in at least two coaxially arranged annular structures, thereby further reducing the weight of the first bearing 33 through the multiple grooves 331 in at least two annular structures. In two adjacent annular structures, the groove 331 in one annular structure is at least partially offset from the groove 331 in the other annular structure. Thus, in the circumferential direction along the first connecting hole 333, this embodiment, by at least partially offsetting the grooves 331 in two adjacent annular structures, and even placing the groove 331 in one annular structure between two adjacent grooves 331 in the other annular structure, avoids reducing the structural strength of the first bearing 33 at the groove 331 when the grooves 331 in different annular structures are radially aligned along the first connecting hole 333, thereby achieving effective weight reduction while further improving the structural strength of the first bearing 33.

[0045] Along the axial direction of the first connecting hole 333, a plurality of second connecting holes 334 are also provided through the main body. A plurality of flattened portions 335 are provided in the outermost annular structure, each flattened portion 335 being located between two adjacent grooves 331. Along the axial direction of the first connecting hole 333, the thickness of the main body in the flattened portion 335 is greater than the thickness of the main body at the bottom of the groove 331 in the outermost annular structure. Along the radial direction of the first connecting hole 333, a plurality of second connecting holes 334 are correspondingly located within the plurality of flattened portions 335. The cylinder 32 is connected to the main body via a locking member and the second connecting holes 334. Because a flattened portion 335 is provided between two adjacent grooves 331 in the outermost annular structure, in this embodiment, the second connecting holes 334 on the first bearing 33 for connecting with the cylinder 32 are opened within the flattened portions 335. The flattened portions 335 can improve the structural strength of the first bearing 33 at the second connecting holes 334, ensuring the connection strength between the first bearing 33 and the cylinder 32 after weight reduction.

[0046] like Figures 2 to 4As shown, in this embodiment, the body of the first bearing 33 has an annular thinning region 336, which is located between the first connecting hole 333 and the outermost annular structure. The annular thinning region 336 contains at least one annular structure. Along the axial direction of the first connecting hole 333, the thickness of the annular thinning region 336 is less than the thickness of the body at the flattening portion 335, and the flattening portion 335 protrudes from the surface of the annular thinning region 336 away from the cylinder 32. Therefore, this embodiment not only reduces the weight of the first bearing 33 through multiple grooves 331, but also further reduces the overall thickness of the first bearing 33 through the annular thinning region 336, resulting in less raw material consumption for manufacturing the first bearing 33, and thus lower manufacturing and transportation costs for the compressor with this first bearing 33. At the same time, since the flattening part 335 protrudes from the annular thinning area 336 away from the surface of the cylinder 32, the connection strength of the first bearing 33 after connecting to the cylinder 32 through the second connecting hole 334 of the flattening part 335 is stronger, which improves the overall structural stability of the compressor pump body 30 during the rotation of the crankshaft 31.

[0047] like Figure 6 As shown, Figure 6 This is a schematic diagram of the structure of the first bearing 33 in one embodiment of the present invention. Figure 6 In the first bearing 33, the annular thinning region 336 is flush with the flattening part 335, that is, the thickness of the annular thinning region 336 is equivalent to the thickness of the body located at the flattening part 335. Figure 6 The first bearing 33 shown is mainly weight-reduced by the grooves provided.

[0048] In this embodiment, the groove 331 in the annular structure adjacent to the outermost annular structure is aligned with the flattening part 335. Thus, the groove 331 in the outermost annular structure is located between two adjacent grooves 331 in the adjacent annular structure. By using this method of corresponding arrangement of the physical part (such as the flattening part 335, located between two adjacent grooves 331 in the annular thinning area 336) with the virtual part (i.e., the groove 331), the local structural strength of the first bearing 33 is not too low, thereby ensuring the overall structural rigidity requirements of the first bearing 33 after weight reduction.

[0049] Specifically, such as Figure 2 As shown, the groove 331 in this embodiment includes a plurality of first grooves 311 (e.g. Figure 2 The five shown) and multiple second grooves 312 (as shown) Figure 2As shown in the diagram (five in total), multiple first grooves 311 are located in the annular thinning region 336 and arranged in a ring structure at intervals. Multiple second grooves 312 are located in the annular thinning region 336 away from the outer periphery of the first connecting hole 333 and arranged in a ring structure at intervals. A flattening part 335 is located between two adjacent second grooves 312. The flattening part 335 and the first grooves 311 in the annular thinning region 336 are aligned radially with each other along the first connecting hole 333, and the second grooves 312 are located between the gaps of two adjacent first grooves 311. Therefore, this embodiment ensures the overall structural rigidity requirements of the first bearing 33 after weight reduction by having the second grooves 312 and the first grooves 311 directly opposite each other.

[0050] To reduce the weight of the first bearing 33 and save on manufacturing materials, while ensuring the strength of the side of the first bearing 33 closest to the first connecting hole 333 is relatively high, since the first connecting hole 333 is used to connect with the crankshaft 31 for stable support, the weight of the first bearing 33 needs to be reduced. To meet these requirements simultaneously, in this embodiment, the grooves 331 within the same annular structure have the same depth along the axial direction of the first connecting hole 333. Radially along the first connecting hole 333, the grooves 331 in the annular structure farther from the first connecting hole 333 have a greater depth than those in the annular structure closer to the first connecting hole 333. For example, the depth of the second groove 312 in the outermost annular structure is greater than the depth of the first groove 311 in the annular thinning region 336. Therefore, in this embodiment, by making the groove 331 in the annular structure that is farther away from the first connecting hole 333 larger, the weight and material consumption of the first bearing 33 are reduced. At the same time, since the groove 331 of the first bearing 33 near the first connecting hole 333 is relatively large, the weight is reduced without reducing the structural rigidity of the first bearing 33 near the first connecting hole 333.

[0051] In this embodiment, the groove 331 located in the outermost annular structure can be a single-opening groove structure (i.e., a groove structure with only one opening, such as...). Figure 2 (The structure of the first groove 311 shown). To reduce the weight of the first bearing 33 and the cost of paper, and to further reduce unnecessary material waste, in this embodiment, along the radial direction of the first connecting hole 333, the groove 331 in the outermost annular structure extends away from the first connecting hole 333 and penetrates the outer circumferential surface of the body. Thus, the groove 331 in the outermost annular structure has a double-opening groove structure, meaning that the second groove 312 has no groove wall obstructing the side of the first connecting hole 333 away from the annular thinning region 336, thereby further reducing the weight of the first bearing 33 without affecting the overall structural performance of the first bearing 33.

[0052] Along the axial direction of the first connecting hole 333, the body of the first bearing 33 has a first thickness, which is the thickness of the region of the annular thinning region 336 offset from the groove 331. The first thickness is as follows: Figure 5 The thickness indicated by the letter H1 is not less than 5.0 mm and not more than 6.6 mm. This embodiment ensures the first thickness falls within this range, reducing the weight of the first bearing 33 while maintaining its structural rigidity. If the first thickness is less than 5.0 mm, the structural rigidity of the first bearing 33 will be insufficient, leading to a reduced service life. If the first thickness is greater than 6.6 mm, the weight reduction effect will be insignificant, and cost reduction will be difficult to achieve. Specifically, the first thickness includes one of the following: 5.0 mm, 5.1 mm, 5.2 mm, 5.3 mm, 5.4 mm, 5.5 mm, 5.6 mm, 5.7 mm, 5.8 mm, 5.9 mm, 6.0 mm, 6.1 mm, 6.2 mm, 6.3 mm, 6.4 mm, 6.5 mm, and 6.6 mm. As shown in Table 1 below, Table 1 compares the weight and manufacturing cost of the first bearing 33 in this embodiment with existing competing products when the first thickness is within the above range (in Table 1, the manufacturing raw materials of the bearings under competing products and the first bearing 33 in this embodiment are the same, such as steel).

[0053]

[0054] Table 1

[0055] As can be seen from Table 1, compared with competing bearings, the weight of the first bearings a1 to a5 in this embodiment is significantly reduced because the first thickness is no greater than 6.6 mm. Furthermore, the smaller the first thickness, the smaller the weight of the first bearing 33. It is evident that when the first thickness is no greater than 6.6 mm, the annular thinning region 336 has a significant weight reduction effect on the first bearing 33.

[0056] Along the axial direction of the first connecting hole 333, the body of the first bearing 33 also has a second thickness, which is the thickness of the body located at the flat portion 335. The ratio between the second thickness and the first thickness is not less than 1.04 and not greater than 1.39. The second thickness is... Figure 5 The thickness indicated by the letter H2, i.e., the value of H2 / H1, is greater than or equal to 1.04 and less than or equal to 1.39. When the value of H2 / H1 is within the above range, not only is the overall thickness of the first bearing 33 reduced by the annular thinning zone 336, resulting in less raw material consumption for manufacturing the first bearing 33, but the connection strength of the first bearing 33 after connecting to the cylinder 32 through the second connecting hole 334 of the flattening part 335 is also stronger, improving the overall structural stability of the compressor pump body 30 during the rotation of the crankshaft 31.

[0057] Specifically, the value of H2 / H1 includes one of the following: 1.04, 1.05, 1.07, 1.08, 1.10, 1.11, 1.13, 1.14, 1.16, 1.18, 1.19, 1.20, 1.21, 1.22, 1.23, 1.24, 1.25, 1.26, 1.27, 1.28, 1.29, 1.30, 1.31, 1.32, 1.33, 1.34, 1.35, 1.36, 1.37, 1.38, and 1.39.

[0058] Along the axial direction of the first connecting hole 333, the body of the first bearing 33 also has a third thickness, which is the thickness of the annular thinning region 336 at the bottom of the groove 331 (i.e., the thickness of the body at the bottom of the first groove 311), such as Figure 5 The thickness indicated by the letter H3, the ratio between the first thickness and the third thickness (i.e., H1 / H3) is not less than 1.0 and not greater than 1.4. When H1 / H3 is within the above range, it not only achieves the thinning and weight reduction of the first bearing 33, but also ensures the structural strength of the first bearing 33 located in the annular thinning zone 336, thereby ensuring the assembly strength requirements between the first bearing 33 and the crankshaft 31. Specifically, the value of H1 / H3 includes one of 1.0, 1.1, 1.2, 1.3, and 1.4.

[0059] Along the axial direction of the first connecting hole 333, the body also has a fourth thickness, which is the thickness of the body at the bottom of the groove 331 in the outermost annular structure (i.e., the thickness of the body at the bottom of the second groove 312). Figure 5 The thickness indicated by the letter H4 is such that the ratio between the first thickness and the fourth thickness (i.e., H1 / H4) is not less than 1.0 and not greater than 5.0. The fourth thickness is the thickness of the thinnest part of the first bearing 33 in this embodiment. This embodiment achieves effective weight reduction of the first bearing 33 by ensuring that the H1 / H4 value of the first bearing 33 is not less than 1.0 and not greater than 5.0, while ensuring that the structural strength of the thinnest part of the first bearing 33 meets the connection strength requirements between the first bearing 33 and the cylinder 32, improving the fatigue resistance of the first bearing 33, and preventing cracking or damage at its thinnest part during long-term operation. This achieves a lightweight design of the first bearing 33 while ensuring its service life.

[0060] Specifically, in this embodiment, the value of H1 / H4 includes one of the following: 1.0, 1.1, 1.3, 1.5, 1.6, 1.8, 1.9, 2.0, 2.1, 2.3, 2.5, 2.6, 2.8, 3.0, 3.1, 3.2, 3.4, 3.6, 3.8, 3.9, 4.0, 4.1, 4.3, 4.5, 4.7, 4.8, 4.9, and 5.0.

[0061] In this embodiment, the shape of the grooves in each annular structure includes at least one of the following: rectangular groove, trapezoidal groove, cylindrical groove, rhomboid groove, and triangular groove. The specific shape can be determined according to the actual processing conditions and / or requirements, and this embodiment does not impose a unique limitation. The number of grooves 331 in different annular structures is N, where N is not less than four and not more than seven. The number of grooves 331 in different annular structures can usually be determined according to the number of second connecting holes 334. When N is not less than four and not more than seven, it can effectively reduce the weight of the first bearing 33 without reducing the structural rigidity of the first bearing 33 due to too many grooves 331. Specifically, N includes one of four, five, six, or seven. As shown in Table 2, Table 2 lists the weight changes of the first bearing when different numbers of grooves 331 are provided on the first bearing.

[0062]

[0063] Table 2

[0064] As shown in Table 2, the first bearing A1 has no groove 331 and is the heaviest. The first bearing A2 has one groove 331, and although its weight is less than that of the first bearing A1, it is relatively heavier than the first bearing a1 with more grooves 331 and the first bearing a4. The first bearing a4 has the most grooves 331 and is the lightest.

[0065] Therefore, this embodiment reduces the weight of the first bearing 33 by creating multiple grooves 331 on the first bearing 33 and arranging these grooves 331 around the first connecting hole 333 in at least two annular structures, while maintaining essentially unchanged mechanical properties. This results in a 1% to 40% reduction in the total weight of the first bearing 33 under the new structure compared to existing lower bearings made of the same material, and a reduction in thickness (such as at least one of the first, second, third, and fourth thicknesses) to 5% to 86% of the thickness of existing lower bearings. This achieves lightweight design and green, energy-saving manufacturing, thereby reducing the manufacturing and transportation costs of the compressor with this first bearing 33.

[0066] A second embodiment of the present invention also provides a compressor, which includes a compressor pump body 30. The compressor further includes a housing 10 and a motor 20, which is installed within the housing 10 and includes a stator and a rotor. The rotor is rotatably disposed within the stator and is connected to the end of a crankshaft 31 away from the cylinder 32 of the compressor pump body 30 to drive the crankshaft 31 to rotate. The compressor pump body 30 is disposed within the housing 10 and connected to the inner peripheral wall of the housing 10. The compressor pump body 30 also includes a second bearing 34 and a muffler 35. The second bearing 34 is connected to the side of the cylinder 32 near the motor 20 and is connected to the inner peripheral wall of the housing 10. A first bearing 33 is connected to the side of the cylinder 32 away from the motor 20. The muffler 35 is disposed on the side of the second bearing 34 away from the cylinder 32. For details on the structure of the first bearing 33 of the compressor pump body 30, please refer to the description provided in the first embodiment of the present invention; this embodiment will not repeat the details here.

[0067] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0068] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0069] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A compressor pump body characterized by, The utility model relates to a crankshaft (31) and a compression mechanism, and a first bearing (33) is arranged on the cylinder (32) and is sleeved with the crankshaft (31). The first bearing (33) is recessed with a plurality of grooves (331) on the surface away from the cylinder (32). The first bearing (33) comprises: The body is recessed with a plurality of grooves (331) on the first surface (332) away from the cylinder (32) and is sleeved with the crankshaft (31).

2. The compressor pump body of claim 1, wherein, The plurality of grooves (331) are arranged in at least two coaxial annular structures, and the grooves (331) in one of the adjacent annular structures are at least partially staggered with the grooves (331) in the other annular structure. The body is further recessed with a plurality of second connecting holes (334) in the axial direction of the first connecting hole (333), and the outermost annular structure is provided with a plurality of flat portions (335), each of which is located between two adjacent grooves (331). The thickness of the body at the flat portion (335) is greater than the thickness of the body at the groove bottom in the outermost annular structure.

3. The compressor pump body of claim 2, wherein, The body has an annular thinning area (336) between the first connecting hole (333) and the outermost annular structure, and the annular thinning area (336) has at least one annular structure.

4. The compressor pump body of claim 3, wherein, The grooves (331) in the annular structure adjacent to the outermost annular structure are aligned with the flat portions (335).

5. The compressor pump body of claim 4, wherein, ​ 6. The compressor pump body of claim 4, wherein, ​ 7. The compressor pump body of claim 3, wherein, The groove (331) in the same annular structure has the same axial groove depth along the first connecting hole (333), and the groove depth of the groove (331) in the annular structure farther from the first connecting hole (333) in the radial direction of the first connecting hole (333) is greater than the groove depth of the groove (331) in the annular structure closer to the first connecting hole (333).

8. The compressor pump body of any one of claims 3 to 7, wherein, In the radial direction of the first connecting hole (333), the groove hole of the groove (331) in the outermost annular structure extends away from the first connecting hole (333) and penetrates the outer circumferential surface of the body.

9. The compressor pump body of claim 5, wherein, In the axial direction of the first connecting hole (333), the body has a first thickness, which is the thickness of the annular thinning area (336) located in the area of the groove (331), and the first thickness is not less than 5.0 mm and not greater than 6.6 mm.

10. The compressor pump body of claim 9, wherein, In the axial direction of the first connecting hole (333), the body also has a second thickness, which is the thickness of the body at the flat portion (335), and the ratio between the second thickness and the first thickness is not less than 1.04 and not greater than 1.

39.

11. The compressor pump body of claim 9, wherein, In the axial direction of the first connecting hole (333), the body also has a third thickness, which is the thickness of the annular thinning area (336) located at the groove bottom of the groove (331), and the ratio between the first thickness and the third thickness is not less than 1.0 and not greater than 1.

4.

12. The compressor pump body of claim 9, wherein, In the axial direction of the first connecting hole (333), the body also has a fourth thickness, which is the thickness of the body at the groove bottom of the groove (331) in the outermost annular structure, and the ratio between the first thickness and the fourth thickness is not less than 1.0 and not greater than 5.

0.

13. A compressor characterized by, The compressor comprises the compressor pump body according to any one of claims 1 to 12.

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