Compressor and refrigeration equipment

Abstract

The compressor comprises a shell, a crankcase, a supporting assembly and a crankshaft, the crankcase, the supporting assembly and the crankshaft are arranged in the shell, the crankcase comprises a main body part, an installation part and a supporting part, the installation part is connected to the main body part and provided with a shaft hole, the supporting part is connected to the upper end face of the installation part, and the shaft hole penetrates through the supporting part; a groove is formed in the upper end face of the mounting part, the groove is formed around the periphery of the supporting part, and the longitudinal section of the groove is triangular; the supporting assembly comprises a gasket and a bearing which sleeve the supporting part, the crankshaft comprises a main shaft, a bearing part and an eccentric part which are sequentially connected, the main shaft penetrates through the shaft hole and is in running fit with the mounting part and the supporting part, the bearing part is borne by the bearing, and the bearing part and the supporting part are arranged in the axial direction of the main shaft at intervals. According to the compressor, the flexibility of the supporting part can be improved, the risk of fatigue cracks is reduced, the abrasion between the supporting part and the crankshaft is reduced, the supporting part can be prevented from hindering the rotation of the crankshaft, and the reliability of the compressor is improved.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, and in particular to a compressor and refrigeration equipment. Background Technology

[0002] During the operation of a reciprocating compressor, the crankcase vibrates due to airflow pulsation and crankshaft rotation. The bushing in the crankcase that mounts the crankshaft is a rigid connection. After long-term operation, the bushing will experience vibration fatigue and fatigue cracks, which will lead to increased wear between the inner circumferential wall of the bushing and the crankshaft. It will also cause the upper end face of the bushing to come into contact with the crankshaft, affecting the crankshaft rotation. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a compressor that can increase the flexibility of the support portion, reduce the risk of fatigue cracks, reduce wear between the support portion and the crankshaft, and prevent the support portion from hindering crankshaft rotation, thereby improving the reliability of the compressor.

[0004] This utility model also provides a refrigeration device having the above-mentioned compressor.

[0005] A compressor according to a first aspect of the present invention includes a housing with an inner cavity; a crankcase disposed in the inner cavity, the crankcase including a main body, a mounting part, and a support part, the mounting part being connected to the main body and having a shaft hole, the support part being connected to the upper end face of the mounting part, and the shaft hole penetrating the support part, the upper end face of the mounting part having a groove, the groove being arranged around the outer periphery of the support part, and the outer peripheral wall of the support part forming the inner peripheral wall of the groove, the longitudinal section of the groove being triangular, and the small end of the triangle facing downward; a support assembly including a gasket and a bearing, the gasket and the bearing being sleeved on the outer periphery of the support part; a crankshaft including a main shaft, a bearing part, and an eccentric part, the bearing part being connected to the upper end of the main shaft, the eccentric part being connected to the upper end of the bearing part, the main shaft passing through the shaft hole and rotatably engaging with the mounting part and the support part, the bearing part being supported by the bearing and spaced apart from the support part in the axial direction of the main shaft.

[0006] The compressor according to the first aspect of this utility model has at least the following beneficial effects: By providing a groove arranged around the outer periphery of the support portion on the upper end face of the mounting portion, and the outer peripheral wall of the support portion forming the inner peripheral wall of the groove, i.e., the groove is arranged adjacent to the support portion, the radial stiffness of the support portion along the crankshaft can be reduced, and the flexibility of the support portion can be increased. During crankshaft rotation, the problem of local stress concentration in the support portion can be alleviated, and the risk of fatigue cracks in the support portion due to vibration fatigue can be reduced. Due to the increased flexibility of the support portion, during crankshaft rotation, the support portion can sway with the crankshaft, thereby increasing the contact area between the crankshaft and the support portion, reducing the surface pressure, and thus increasing the oil film thickness, improving the lubrication between the crankshaft and the support portion, and effectively reducing wear between the crankshaft and the support portion. At the same time, since the longitudinal section of the groove is triangular, it can prevent the gasket from being completely embedded in the groove, so that the gasket and bearing can provide stable support for the bearing portion of the crankshaft, avoiding the disadvantage of the upper end of the support portion contacting the bearing portion and hindering the rotation of the crankshaft, thereby improving the reliability of the compressor.

[0007] According to some embodiments of this utility model, the recess depth of the groove is D, which satisfies: 5mm≤D≤7mm.

[0008] According to some embodiments of the present invention, the crankcase further includes a cylinder section, which is connected to the main body and located on the radial side of the main body along the shaft hole. The compressor further includes a cylinder head, a first exhaust pipe, and an exhaust muffler. The cylinder head is connected to the cylinder section and has an exhaust chamber. One end of the first exhaust pipe is connected to the exhaust chamber, and the other end is connected to the exhaust muffler. The main body has a clearance groove, and the exhaust muffler is located at the opening of the clearance groove and is spaced apart from the main body. The groove wall of the clearance groove extends circumferentially along the exhaust muffler.

[0009] According to some embodiments of this utility model, the minimum distance between the wall of the clearance groove and the outer peripheral wall of the exhaust muffler is L, which satisfies: 3mm≤L≤6mm.

[0010] According to some embodiments of the present invention, the compressor further includes a second exhaust pipe and a third exhaust pipe. The third exhaust pipe is installed on the housing. The two ends of the second exhaust pipe are respectively connected to the exhaust muffler and the third exhaust pipe. The upper end face of the main body is provided with a support boss, and the second exhaust pipe abuts against the upper end face of the support boss.

[0011] According to some embodiments of the present invention, a fixing member is connected between the second exhaust pipe and the supporting boss, and the fixing member is arranged around the outer periphery of the second exhaust pipe and fixedly connected to the supporting boss.

[0012] According to some embodiments of the present invention, the two ends of the fixing member are respectively provided with a first buckle portion, and the two sides of the supporting boss are respectively provided with a second buckle portion, and the second buckle portion engages with the first buckle portion.

[0013] According to some embodiments of the present invention, the second exhaust pipe includes a spiral section, which is connected to the third exhaust pipe.

[0014] According to some embodiments of the present invention, the crankcase further includes a plurality of support seats, which are connected to the bottom of the main body and arranged at intervals along the circumference of the mounting portion. The main body is provided with a plurality of reinforcing ribs, which extend from the plurality of support seats toward the mounting portion.

[0015] According to some embodiments of the present invention, the crankcase further includes a cylinder section, which is connected to the main body and located on the radial side of the shaft hole. The main body is provided with a first limiting part on the side away from the cylinder section, and the first limiting part protrudes in the direction away from the cylinder section.

[0016] And / or, the main body is provided with a second limiting part on the side opposite to the cylinder part, and the second limiting part protrudes upward;

[0017] And / or, the main body is provided with two third limiting parts on the side near the cylinder part, and the two third limiting parts protrude toward the left and right sides of the main body, respectively.

[0018] The refrigeration device according to a second aspect of the present invention includes the compressor of the first aspect of the present invention.

[0019] The refrigeration equipment according to the second aspect of this utility model has at least the following beneficial effects: Because the refrigeration equipment uses the aforementioned compressor, by providing a groove arranged around the outer periphery of the support portion on the upper end face of the mounting portion, and the outer peripheral wall of the support portion forming part of the groove wall (i.e., the groove is arranged adjacent to the support portion), the radial stiffness of the support portion along the crankshaft can be reduced, and the flexibility of the support portion can be increased. During crankshaft rotation, this can alleviate the problem of local stress concentration in the support portion and reduce the risk of fatigue cracks caused by vibration fatigue in the support portion. Due to the increased flexibility of the support portion, during crankshaft rotation, the support portion can sway with the crankshaft, thereby increasing the contact area between the crankshaft and the support portion, reducing surface pressure, and thus increasing the oil film thickness, improving the lubrication between the crankshaft and the support portion, and effectively reducing wear between the crankshaft and the support portion. Simultaneously, because the longitudinal section of the groove is triangular, it can prevent the gasket from being completely embedded in the groove, allowing the gasket and bearing to provide stable support for the bearing portion of the crankshaft, avoiding the disadvantage of the upper end of the support portion contacting the bearing portion and hindering crankshaft rotation, thereby improving the reliability of the compressor.

[0020] 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

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0022] Figure 1 This is a top view of the internal structure of the compressor in an embodiment of this utility model;

[0023] Figure 2 This is a schematic diagram of the crankcase in an embodiment of the present invention;

[0024] Figure 3 This is a bottom view of the crankcase in an embodiment of the present invention;

[0025] Figure 4 This is a front sectional view of the connection between the crankcase and the exhaust muffler in an embodiment of this utility model;

[0026] Figure 5 This is a structural schematic diagram of the fixing component in an embodiment of this utility model;

[0027] Figure 6 This is a cross-sectional view of the internal structure of the compressor in an embodiment of this utility model;

[0028] Figure 7 yes Figure 6 Enlarged view of point A in the middle.

[0029] Figure label:

[0030] Housing 100; Inner cavity 110; Crankshaft 120; Main shaft 121; Bearing part 122; Eccentric part 123; Cylinder head 130; First exhaust pipe 140; Exhaust muffler 150; Second exhaust pipe 160; Fixing part 161; First snap-fit ​​part 1611; Spiral section 162; Third exhaust pipe 170; Valve plate assembly 180; Piston 190; Connecting rod 191;

[0031] Crankcase 200; Main body 210; Clearance groove 211; Support boss 212; Second snap-fit ​​part 2121; Reinforcing rib 213; First limiting part 214; Second limiting part 215; Third limiting part 216; Mounting part 220; Shaft hole 221; Groove 222; Vibration damping hole 223; Support part 230; Cylinder part 240; Compression chamber 241; Support seat 250;

[0032] Support component 300; gasket 310; bearing 320. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0034] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0036] In the description of this utility model, unless otherwise explicitly defined, terms such as setting, installing, connecting, assembling, and cooperating should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0037] In reciprocating compressors, the bushings supporting the crankshaft in the crankcase are typically rigidly connected. During crankshaft rotation, localized stress concentration occurs in these bushings. After prolonged operation, vibrations caused by airflow pulsation and crankshaft rotation can lead to vibration fatigue in the bushings, resulting in fatigue cracks, decreased reliability, accelerated wear between the inner wall of the bushing and the crankshaft, and ultimately, contact between the upper surface of the bushing and the crankshaft, affecting crankshaft rotation.

[0038] Therefore, referring to Figures 1 to 7 As shown, the first aspect of this utility model provides a compressor applied to refrigeration equipment, such as refrigerators or freezers.

[0039] Reference Figure 1 , Figure 2 , Figure 6 and Figure 7As shown, the compressor includes a housing 100, a crankcase 200, and a crankshaft 120. The housing 100 has an inner cavity 110, and both the crankcase 200 and the crankshaft 120 are mounted in the inner cavity 110. Specifically, the crankcase 200 includes a main body 210, a mounting part 220, and a support part 230. The main body 210 is generally a rectangular platform structure. The mounting part 220 is connected to the middle of the main body 210 and is used to mount the crankshaft 120. The lower end of the mounting part 220 protrudes downward from the lower end face of the main body 210, and the upper end face of the mounting part 220 is recessed downward relative to the upper end face of the main body 210 to reduce the weight of the crankcase 200, reduce vibration caused by inertial forces, thereby reducing noise and making the compressor run more smoothly. The support part 230 is connected to the middle position of the upper end face of the mounting part 220, and the support part 230 protrudes from the upper end face of the mounting part 220. The mounting portion 220 is provided with a shaft hole 221 arranged in the vertical direction, and the shaft hole 221 passes through the support portion 230. That is to say, the support portion 230 has a sleeve structure.

[0040] Reference Figure 1 , Figure 6 and Figure 7 As shown, it can be understood that the compressor also includes a support assembly 300. Specifically, the support assembly 300 includes a gasket 310 and a bearing 320. Here, the bearing 320 is a planar bearing 320. Both the gasket 310 and the bearing 320 are sleeved on the outer periphery of the support portion 230, and the bearing 320 is located on the upper side of the gasket 310. The upper end surface of the bearing 320 is higher than the upper end surface of the support portion 230.

[0041] Reference Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, the crankshaft 120 includes a main shaft 121, a support portion 122, and an eccentric portion 123. The main shaft 121 is arranged vertically. The support portion 122 is generally plate-shaped and connected to the upper end of the main shaft 121, protruding radially from the outer peripheral wall of the main shaft 121. The eccentric portion 123 is connected to the upper end face of the support portion 122 and is offset from the central axis of the main shaft 121. The main shaft 121 passes through the shaft hole 221 and rotatably engages with the mounting portion 220 and the support portion 230. The support portion 230 provides radial support force to the crankshaft 120 along the shaft hole 211. The support portion 122 abuts against the upper end face of the bearing 320, and the support portion 122 and the support portion 230 are spaced apart in the axial direction of the main shaft 121, that is, the lower end face of the support portion 122 and the upper end face of the support portion 230 are spaced apart.

[0042] Reference Figure 2As shown, the mounting section 220 is also provided with multiple damping holes 223, which penetrate the mounting section 220 in the vertical direction, and are arranged at intervals along the circumference of the shaft hole 221. Therefore, the weight of the crankcase 200 can be further reduced, the vibration generated by inertial force can be reduced, thereby reducing noise and making the compressor run more smoothly.

[0043] Reference Figure 1 , Figure 6 and Figure 7 As shown, the compressor also includes a motor assembly, a piston 190, and a connecting rod 191, all of which are located within the inner cavity 110. The crankcase 200 also includes a cylinder section 240, which is connected to the main body 210 on one radial side along the shaft hole 221. Specifically, the cylinder section 240 is connected to the upper end face of the front end of the main body 210. The cylinder section 240 is provided with a compression chamber 241 arranged in the front-rear direction, and the piston 190 is slidably mounted in the compression chamber 241 in the front-rear direction. The motor assembly is located at the bottom of the crankcase 200 and is connected to the lower end of the main shaft 121. The eccentric part 123 is connected to the piston 190 via the connecting rod 191, and the connecting rod 191 and the eccentric part 123, as well as the connecting rod 191 and the piston 190, are all hinged. Therefore, during the operation of the compressor, the motor assembly drives the crankshaft 120 to rotate, and the crankshaft 120 drives the piston 190 to reciprocate in the compression chamber 241 in the front-back direction through the connecting rod 191, so as to compress the refrigerant and do work.

[0044] Reference Figure 2 As shown, it can be understood that a groove 222 is provided on the upper end surface of the mounting portion 220. The groove 222 is recessed downwards and is annular, surrounding the outer periphery of the support portion 230. The groove 222 is arranged adjacent to the support portion 230, and the outer peripheral wall of the support portion 230 forms the inner peripheral wall of the groove 222 near the shaft hole 221. In other words, the groove 222 is a recessed structure located at the outer peripheral edge of the support portion 230.

[0045] Reference Figure 6 and Figure 7 As shown, it can be understood that in this embodiment, the longitudinal section of the groove 222 is triangular, with the smaller end of the triangle facing upwards. The triangular longitudinal section of the groove 222 facilitates machining. Furthermore, because the longitudinal section of the groove 222 is triangular, it prevents the gasket 310 from being completely embedded in the groove 22, allowing the gasket 310 and bearing 320 to provide stable support for the bearing portion 122 of the crankshaft 120. This avoids the disadvantage of the upper end of the support portion 230 contacting the bearing portion 122 and hindering the rotation of the crankshaft 120, thus improving the reliability of the compressor.

[0046] It is easy to understand that during the rotation of crankshaft 120, the upper end of main shaft 121 will usually deform or wobble in the radial direction. If the support part 230 has a large rigidity in the radial direction of crankshaft 120, the support part 230 will not deform or wobble with main shaft 121, resulting in a reduction in the contact area between crankshaft 120 and the inner peripheral wall of support part 230, an increase in surface pressure, a decrease in oil film thickness, a deterioration in lubrication performance, and an increase in wear.

[0047] Therefore, by providing the groove 222, the radial stiffness of the support portion 230 along the crankshaft 120 can be reduced, that is, the radial flexibility of the support portion 230 along the crankshaft 120 can be increased. During the rotation of the crankshaft 120, the support portion 230 deforms or wobbles radially along the shaft hole 221 along with the main shaft 121, so as to ensure that there is a large contact area between the crankshaft 120 and the support portion 230, reduce the surface pressure, and make a thicker oil film between the main shaft 121 and the support portion 230, thereby improving the lubrication between the main shaft 121 and the support portion 230, effectively reducing the wear between the main shaft 121 and the support portion 230, and improving the reliability of the compressor.

[0048] Meanwhile, the increased flexibility of the support portion 230 allows it to deform or sway with the main shaft 121 during crankshaft 120 rotation, thereby alleviating the problem of local stress concentration in the support portion 230, effectively reducing the risk of fatigue cracks caused by vibration fatigue in the support portion 230, and further improving the reliability of the compressor.

[0049] It is understandable that the depth of the groove 222 is defined as D, which is the distance from the bottom of the groove 222 to the upper end face of the mounting part 220 along the central axis of the shaft hole 221. The depth D of the groove 222 satisfies: 5mm ≤ D ≤ 7mm. If the depth D of the groove 222 is less than 5mm, the depth of the groove 222 is too small, the flexibility of the support part 230 is insufficient, which will lead to greater wear between the crankshaft 120 and the support part 230, and fatigue cracks are prone to occur, resulting in a decrease in the reliability of the compressor. If the depth D of the groove 222 is greater than 7mm, the depth of the groove 222 is too large, which will lead to a decrease in the structural strength of the mounting part 220, affecting the structural stability of the crankcase 200, affecting the rotational stability of the crankshaft 120, and resulting in a decrease in the reliability of the compressor.

[0050] Therefore, by ensuring that the depth D of the groove 222 is 5mm≤D≤7mm, the flexibility of the support 230 can be increased to reduce the wear between the crankshaft 120 and the support 230, while ensuring the structural stability of the crankcase 200 and the rotational stability of the crankshaft 120, thereby improving the reliability of the compressor.

[0051] Reference Figure 1As shown, the compressor also includes a cylinder head 130, a first exhaust pipe 140, and an exhaust muffler 150. The compressor also includes a valve plate assembly 180. Specifically, the valve plate assembly 180 is connected to the end of the cylinder section 240 opposite to the shaft hole 221. The valve plate assembly 180 has an exhaust port that communicates with the compression chamber 241. The valve plate assembly 180 also includes an exhaust valve plate and a lift limiter. The exhaust valve plate is used to open or close the exhaust port, and the lift limiter is located on one side of the exhaust valve plate and is used to limit the opening degree of the exhaust valve plate to meet exhaust requirements.

[0052] Reference Figure 1 As shown, the cylinder head 130 is connected to the valve plate assembly 180 on the side opposite to the cylinder section 240, and the cylinder head 130 and the valve plate assembly 180 are fixedly connected to the cylinder section 240 by fasteners such as screws and bolts. The cylinder head 130 is provided with an exhaust chamber, the opening of which faces the valve plate assembly 180. The exhaust chamber communicates with the compression chamber 241 through an exhaust port. The wall of the exhaust chamber is provided with a connection hole, which is located on the left or right side of the exhaust chamber and communicates with the exhaust chamber. One end of the first exhaust pipe 140 is connected to the connection hole, that is, one end of the first exhaust pipe 140 passes through the connection hole and is fixedly connected to the cylinder head 130. Generally, the first exhaust pipe 140 and the cylinder head 130 are welded together, so that the first exhaust pipe 140 communicates with the exhaust chamber. It is easy to understand that the first exhaust pipe 140 is generally made of copper, while the cylinder head 130 is a sheet metal part, which gives the first exhaust pipe 140 and the cylinder head 130 good welding performance and makes them easy to process.

[0053] Reference Figure 1 and Figure 4 As shown, the exhaust muffler 150 is located on the outside of the crankcase 200. Specifically, the exhaust muffler 150 is located on the outside of the main body 210 and is spaced apart from the main body 210. The other end of the first exhaust pipe 140 extends outward from the crankcase 200 and is fixedly connected to the exhaust muffler 150, that is, the first exhaust pipe 140 is also located on the outside of the crankcase 200. Typically, the first exhaust pipe 140 and the exhaust muffler 150 are welded together. The compressed refrigerant is discharged from the compression chamber 241 through the exhaust port to the exhaust chamber, and flows through the first exhaust pipe 140 to the exhaust muffler 150 for further discharge to the outside of the compressor. Thus, the exhaust muffler 150 reduces exhaust noise.

[0054] Understandably, since both the first exhaust pipe 140 and the exhaust muffler 150 are located on the outside of the crankcase 200, they are not limited by the structure of the crankcase 200. Different inner diameters of the first exhaust pipe 140 and different volumes of the exhaust muffler 150 can be selected according to actual needs to meet different exhaust requirements. For example, selecting a first exhaust pipe 140 with a larger inner diameter and an exhaust muffler 150 with a larger volume can increase the exhaust flow area, thereby reducing exhaust resistance, lowering exhaust pressure loss, and improving the muffler effect, thus reducing noise.

[0055] Understandably, since the first exhaust pipe 140 and the exhaust muffler 150 are not structurally limited by the crankcase 200, they can be directly replaced for compressors of different displacements, offering good versatility. Furthermore, because both the first exhaust pipe 140 and the exhaust muffler 150 are located on the outside of the crankcase 200, the heat transferred from the refrigerant flowing through them to the crankcase 200 is reduced, effectively decreasing refrigerant heat loss during exhaust and reducing the risk of intake overheating, thereby improving compressor efficiency.

[0056] Reference Figure 2 and Figure 4 As shown, it can be understood that the exhaust muffler 150 is arranged along the front-rear direction of the crankcase 200. The main body 210 is provided with a clearance groove 211, located on the side of the main body 210 facing the exhaust muffler 150. The exhaust muffler 150 is located at the opening of the clearance groove 211, and the outer peripheral wall of the exhaust muffler 150 is spaced apart from the groove wall of the clearance groove 211. Furthermore, the groove wall of the clearance groove 211 extends circumferentially along the exhaust muffler 150. In this embodiment, the cross-section of the exhaust muffler 150 is circular or approximately circular, that is, the outer peripheral wall of the exhaust muffler 150 is a cylindrical surface or approximately an arc surface; correspondingly, the groove wall of the clearance groove 211 is an arc surface or approximately an arc surface. Therefore, by providing the clearance groove 211 to avoid the exhaust muffler 150, while ensuring that the exhaust muffler 150 and the main body 210 are spaced apart to reduce heat loss and avoid noise generation due to collision between the exhaust muffler 150 and the main body 210 during compressor operation, the crankcase 200 and the exhaust muffler 150 are more compact, which is beneficial to reducing the size of the compressor. At the same time, it can reduce the overall weight of the crankcase 200 to a certain extent, reduce the vibration generated by inertial forces, thereby reducing noise and making the compressor run more smoothly.

[0057] Reference Figure 4As shown, it can be understood that the minimum distance between the wall of the clearance groove 211 and the outer peripheral wall of the exhaust muffler 150 is defined as L. L is the minimum distance from the wall of the clearance groove 211 to the outer peripheral wall of the exhaust muffler 150 along the radial direction of the exhaust muffler 150. The minimum distance L between the wall of the clearance groove 211 and the outer peripheral wall of the exhaust muffler 150 satisfies: 3mm ≤ L ≤ 6mm. If L < 3mm, the minimum distance between the main body 210 and the exhaust muffler 150 is too small, and during compressor operation, the main body 210 and the exhaust muffler 150 are prone to collision, generating noise or causing damage to the exhaust muffler 150. If L > 6mm, the minimum distance between the exhaust muffler 150 and the main body 210 is too large, the structure is not compact enough, and the size of the compressor increases. Therefore, by ensuring that 3mm≤L≤6mm, the internal structure of the compressor is made more compact, thereby reducing the size of the compressor, while meeting the requirement that the main body 210 and the exhaust muffler 150 are spaced apart and that the minimum distance between the main body 210 and the exhaust muffler 150 does not collide during compressor operation.

[0058] Reference Figure 1 As shown, the compressor also includes a second exhaust pipe 160 and a third exhaust pipe 170. The third exhaust pipe 170 is installed in the housing 100 and extends outward from the housing 100. The third exhaust pipe 170 is fixedly connected to the housing 100, for example, by welding. The second exhaust pipe 160 is disposed in the inner cavity 110. One end of the second exhaust pipe 160 is fixedly connected to the exhaust muffler 150, for example, by welding or by an adapter. The other end of the second exhaust pipe 160 is fixedly connected to the third exhaust pipe 170, for example, by welding or by an adapter. Therefore, the compressed refrigerant is discharged from the compression chamber 241 sequentially through the exhaust port of the valve plate assembly 180, the exhaust chamber, the first exhaust pipe 140, the exhaust muffler 150, the second exhaust pipe 160, and the third exhaust pipe 170 to the outside of the compressor to supply refrigerant to the refrigeration system.

[0059] Reference Figure 1 and Figure 2As shown, a support boss 212 is provided on the upper surface of the main body 210. Specifically, the support boss 212 is generally cuboid in shape and protrudes from the upper surface of the main body 210. The second exhaust pipe 160 abuts against the upper surface of the support boss 212. Therefore, the support boss 212 provides an upward supporting force to the second exhaust pipe 160, effectively dealing with vibration, thereby improving the installation stability of the second exhaust pipe 160, avoiding the disadvantage of the second exhaust pipe 160 breaking after the compressor has been running for a long time, and thus extending its service life.

[0060] Reference Figure 1 and Figure 5 As shown, it can be understood that a fastener 161 is also connected between the second exhaust pipe 160 and the support boss 212. Specifically, the fastener 161 has a semi-annular structure and is made of rubber. The fastener 161 is wrapped around the outer periphery of the second exhaust pipe 160, and both ends of the fastener 161 are fixedly connected to the support boss 212. Therefore, the fastener 161 can fix the second exhaust pipe 160 and the support boss 212 relatively, effectively reducing the vibration of the second exhaust pipe 160, thereby reducing the vibration transmitted from the second exhaust pipe 160 to the housing 100 and achieving shock absorption.

[0061] Reference Figure 1 and Figure 5 As shown, it can be understood that the fastener 161 and the support boss 212 can be connected by snap-fit, screws, or other fasteners. In this embodiment, the fastener 161 and the support boss 212 are connected by snap-fit. Specifically, the fastener 161 has a first snap-fit ​​portion 1611 at each end, which is configured as a snap-fit ​​hole. Correspondingly, the support boss 212 has a second snap-fit ​​portion 2121 on both sides along its length, which is configured as a snap-fit ​​block that engages with the snap-fit ​​hole. That is, the second snap-fit ​​portion 2121 engages with the first snap-fit ​​portion 1611. Therefore, during installation, the second exhaust pipe 160 is first placed against the upper surface of the support boss 212, and then the fastener 161 is wrapped around the outer periphery of the second exhaust pipe 160, so that the two snap-fit ​​holes of the fastener 161 are respectively engaged with the two snap-fit ​​blocks of the support boss 212. This method is convenient to operate, easy to assemble, and the connection is stable and reliable, effectively reducing vibration. At the same time, it can prevent the second exhaust pipe 160 from falling off the support boss 212, further improving the installation stability of the second exhaust pipe 160.

[0062] It is understandable that the positions of the locking hole and the locking block on the fixing member 161 and the supporting boss 212 can be interchanged, that is, the supporting boss 212 is provided with a locking hole, and the fixing member 161 is provided with a locking block that engages with the locking hole. Further details will not be provided here.

[0063] Reference Figure 1As shown, the second exhaust pipe 160 includes a helical section 162, which connects to the third exhaust pipe 170. The helical section 162 is a flexible helical hose, meaning the second exhaust pipe 160 is a flexible hose. The second exhaust pipe 160 is connected to the third exhaust pipe 170 and the exhaust muffler 150 via adapters. The second exhaust pipe 160 is configured with flexible components such as nylon, soluble polytetrafluoroethylene (PTFE), or silicone rubber. This material offers good reliability, high-temperature resistance, oil resistance, and refrigerant compatibility, which helps improve the reliability of the second exhaust pipe 160.

[0064] Reference Figure 1 As shown, it is understood that the spiral segment 162, configured as a spiral hose, is elastic. On the one hand, the spiral segment 162 can reduce the pulsation of refrigerant during exhaust and buffer the vibration generated during compressor operation, thereby effectively reducing noise. On the other hand, it can greatly shorten the length of the connecting pipe between the exhaust muffler 150 and the third exhaust pipe 170, that is, shorten the length of the second exhaust pipe 160, making the structure more compact and easier to assemble. At the same time, it can effectively reduce exhaust resistance, reduce refrigerant pressure drop, reduce exhaust pressure loss, and further improve compressor efficiency.

[0065] Reference Figure 2 and Figure 3 As shown, the crankcase 200 also includes multiple support seats 250. Specifically, the support seats 250 are generally columnar in shape, and the multiple support seats 250 are respectively connected to the bottom of the main body 210, and the multiple support seats 250 are arranged at intervals along the circumference of the mounting portion 220. In this embodiment, there are four support seats 250, and the four support seats 250 are respectively located at the four corners of the main body 210. The support seats 250 are used to support the crankcase 200, and generally, a shock-absorbing component, such as a spring, is connected between the support seats 250 and the housing 100.

[0066] Reference Figure 3 As shown, it can be understood that the main body 210 is also provided with a plurality of reinforcing ribs 213, which are located at the bottom of the main body 210. Generally, the number of reinforcing ribs 213 is equal to the number of support seats 250 and they are arranged in a one-to-one correspondence. In this embodiment, there are also four reinforcing ribs 213, which are arranged correspondingly to the four support seats 250. Specifically, the reinforcing ribs 213 extend radially from the support seat 250 to the mounting portion 220 along the shaft hole 221. Therefore, by providing reinforcing ribs 213, the structural strength of the crankcase 200 can be increased to ensure the stability of the crankcase 200 and to ensure stable rotation of the crankshaft 120, which is beneficial for reducing noise.

[0067] It is easy to understand that during the operation of the compressor, the crankcase 200 vibrates to a certain extent in the front-to-back, up-to-down, and left-to-right directions.

[0068] Reference Figure 1 and Figure 2 As shown, it can be understood that the main body 210 is also provided with a first limiting part 214. The first limiting part 214 is located at the end of the main body 210 away from the cylinder part 240. That is, the cylinder part 240 and the first limiting part 214 are respectively located at the two ends of the crankcase 200 in the front-rear direction. The first limiting part 214 is a protrusion structure and protrudes in the front-rear direction away from the cylinder part 240.

[0069] Reference Figure 1 and Figure 2 As shown, it can be understood that when the compressor is not running, a certain distance is reserved between the first limiting part 214 and the inner wall of the housing 100 in the front-rear direction. Similarly, a certain distance is also reserved between the cylinder head 130 installed on the cylinder part 240 and the inner wall of the housing 100. Therefore, by setting the first limiting part 214 and leaving appropriate distances between the first limiting part 214 and the inner wall of the housing 100, and between the cylinder head 130 and the inner wall of the housing 100 in the front-rear direction, on the one hand, it avoids the disadvantage of the crankcase 200 frequently colliding with the housing 100 and generating noise due to the excessively small distance between the crankcase 200 and the inner wall of the housing 100 in the front-rear direction, which helps to reduce noise; on the other hand, it also avoids the disadvantage of the crankcase 200 vibrating too much due to the excessively large distance between the crankcase 200 and the inner wall of the housing 100 in the front-rear direction, which leads to an increased vibration amplitude of the crankcase 200 and causes the spring between the crankcase 200 support 250 and the housing 100 to fall off, which helps to reduce the vibration frequency and vibration amplitude of the crankcase 200.

[0070] Reference Figure 1 and Figure 2 As shown, it can be understood that the upper end face of the cylinder portion 240 is located above the upper end face of the main body portion 210. Therefore, the main body portion 210 is also provided with a second limiting portion 215. The second limiting portion 215 has a columnar structure, is connected to the upper end face of the main body portion 210 and protrudes upward, and is located at one end of the main body portion 210 away from the cylinder portion 240 in the front-rear direction. In this embodiment, there are two second limiting portions 215, located at the left and right ends of the main body portion 210, respectively. Generally, the upper end face of the second limiting portion 215 is at the same height as the upper end face of the cylinder portion 240.

[0071] Similarly, when the compressor is not running, a certain distance is reserved between the second limiting part 215 and the inner wall of the housing 100, and between the cylinder part 240 and the inner wall of the housing 100 in the vertical direction. Therefore, by setting the second limiting part 215, a suitable distance is reserved between the upper end of the crankcase 200 and the inner wall of the housing 100, avoiding the disadvantage of the crankcase 200 frequently colliding with the housing 100 and generating noise due to the vertical distance between the crankcase 200 and the inner wall of the housing 100 being too small, thus helping to reduce noise. At the same time, it also avoids the disadvantage of the crankcase 200 vibrating too much in the vertical direction, which would lead to the crankcase 200 vibrating amplitude and the spring between the crankcase 200 support 250 and the housing 100 falling off, thus helping to reduce the vibration frequency and amplitude of the crankcase 200.

[0072] Reference Figure 1 and Figure 2 As shown, it can be understood that the main body 210 is also provided with two third limiting parts 216. The two third limiting parts 216 are located at the end of the main body 210 near the cylinder part 240, and the two third limiting parts 216 are respectively located on the left and right sides of the main body 210. The third limiting parts 216 are protrusion structures, and the two third limiting parts 216 are respectively protruding towards the left and right sides of the main body 210.

[0073] Similarly, when the compressor is not running, a certain distance is reserved between both third limiting parts 216 and the inner wall of the housing 100 in the left and right directions. Therefore, by setting two third limiting parts 216, a suitable distance is reserved between the left and right ends of the crankcase 200 and the inner wall of the housing 100, avoiding the disadvantage of the crankcase 200 frequently colliding with the housing 100 and generating noise due to the excessive distance between the crankcase 200 and the inner wall of the housing 100 in the left and right directions, thus helping to reduce noise. At the same time, it also avoids the disadvantage of the crankcase 200 vibrating too much in the left and right directions, which would lead to an increase in the vibration amplitude of the crankcase 200 and cause the spring between the crankcase 200 support 250 and the housing 100 to fall off, thus helping to reduce the vibration frequency and vibration amplitude of the crankcase 200.

[0074] It is understood that in other embodiments, the main body 210 may be provided with only one or any two of the first limiting part 214, the second limiting part 215 and the third limiting part 216, which can also reduce the vibration frequency and vibration amplitude of the crankcase 200.

[0075] The refrigeration device of the second aspect of this utility model includes the compressor of the first aspect of this utility model. The refrigeration device here may be a refrigerator, freezer, etc.

[0076] Since the refrigeration equipment adopts all the technical solutions of the compressor in the above embodiments, it has at least all the beneficial effects brought about by the technical solutions in the above embodiments.

[0077] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A compressor, characterized in that, include: The shell has an internal cavity; A crankcase is disposed in the inner cavity. The crankcase includes a main body, a mounting part, and a support part. The mounting part is connected to the main body and has a shaft hole. The support part is connected to the upper end face of the mounting part, and the shaft hole passes through the support part. The upper end face of the mounting part has a groove. The groove is arranged around the outer periphery of the support part, and the outer peripheral wall of the support part forms the inner peripheral wall of the groove. The longitudinal section of the groove is triangular, and the small end of the triangle faces downward. The support assembly includes a gasket and a bearing, both of which are sleeved on the outer periphery of the support portion; A crankshaft includes a main shaft, a load-bearing portion, and an eccentric portion. The load-bearing portion is connected to the upper end of the main shaft, and the eccentric portion is connected to the upper end of the load-bearing portion. The main shaft passes through the shaft hole and rotates with the mounting portion and the support portion. The load-bearing portion is supported by the bearing and is spaced apart from the support portion in the axial direction of the main shaft.

2. The compressor according to claim 1, characterized in that: The recess depth of the groove is D, which satisfies: 5mm≤D≤7mm.

3. The compressor according to claim 1, characterized in that: The crankcase also includes a cylinder section, which is connected to the main body and located on the radial side of the main body along the shaft hole. The compressor also includes a cylinder head, a first exhaust pipe, and an exhaust muffler. The cylinder head is connected to the cylinder section and has an exhaust chamber. One end of the first exhaust pipe is connected to the exhaust chamber, and the other end is connected to the exhaust muffler. The main body has a clearance groove, and the exhaust muffler is located at the opening of the clearance groove and is spaced apart from the main body. The groove wall of the clearance groove extends circumferentially along the exhaust muffler.

4. The compressor according to claim 3, characterized in that: The minimum distance between the wall of the clearance groove and the outer peripheral wall of the exhaust muffler is L, which satisfies: 3mm≤L≤6mm.

5. The compressor according to claim 3, characterized in that: The compressor also includes a second exhaust pipe and a third exhaust pipe. The third exhaust pipe is installed on the housing. The two ends of the second exhaust pipe are respectively connected to the exhaust muffler and the third exhaust pipe. The upper end face of the main body is provided with a support boss, and the second exhaust pipe abuts against the upper end face of the support boss.

6. The compressor according to claim 5, characterized in that: A fixing member is connected between the second exhaust pipe and the supporting boss. The fixing member is arranged around the outer periphery of the second exhaust pipe and is fixedly connected to the supporting boss.

7. The compressor according to claim 6, characterized in that: The fastener has a first latching part at each end, and the support boss has a second latching part on each of its back sides. The second latching part engages with the first latching part.

8. The compressor according to claim 5, characterized in that: The second exhaust pipe includes a spiral section, which is connected to the third exhaust pipe.

9. The compressor according to claim 1, characterized in that: The crankcase also includes multiple support seats, which are connected to the bottom of the main body and arranged at intervals along the circumference of the mounting portion. The main body is provided with multiple reinforcing ribs, which extend from the multiple support seats toward the mounting portion.

10. The compressor according to claim 1, characterized in that: The crankcase also includes a cylinder section, which is connected to the main body and located on the radial side of the shaft hole. The main body is provided with a first limiting part on the side away from the cylinder section, and the first limiting part protrudes in the direction away from the cylinder section. And / or, the main body is provided with a second limiting part on the side opposite to the cylinder part, and the second limiting part protrudes upward; And / or, the main body is provided with two third limiting parts on the side near the cylinder part, and the two third limiting parts protrude toward the left and right sides of the main body, respectively.

11. A refrigeration device, characterized in that, The compressor includes any one of claims 1 to 10.

Images