Refrigerator compressor and refrigeration device

Abstract

The application discloses a refrigerator compressor and refrigeration equipment, and relates to the technical field of refrigerator compressors, wherein the refrigerator compressor comprises a shell, a motor, a cylinder and a curved connecting rod, the motor is connected with a crankshaft; the cylinder is arranged horizontally and side by side with the motor, a piston is movably arranged in the cylinder; the curved connecting rod has a first end and a second end, the first end is connected with the crankshaft, and the second end is connected with the piston; the technical scheme provided by the application can reduce the overall height of the refrigerator compressor.

Description

Technical Field

[0001] This invention relates to the field of refrigerator compressor technology, and particularly to a refrigerator compressor and refrigeration equipment. Background Technology

[0002] Existing refrigerator compressors include a crankshaft, connecting rod, and piston. The crankshaft is powered by a motor to rotate, and the piston is driven to reciprocate linearly through the connection between the connecting rod and the crankshaft, and the connection between the connecting rod and the piston. Because the existing cylinder and motor are arranged vertically, and the large and small ends of the connecting rod are at the same height, the highest position of the existing compressor is the cylinder head where the piston is built in, which is not conducive to reducing the height of the compressor. Summary of the Invention

[0003] The main objective of this invention is to provide a refrigerator compressor and refrigeration equipment that aims to reduce the overall height of the refrigerator compressor.

[0004] To achieve the above objectives, the present invention provides a refrigerator compressor comprising:

[0005] case;

[0006] The motor is connected to the crankshaft;

[0007] A cylinder, horizontally arranged alongside the motor, has a piston movably mounted inside it; and

[0008] A curved connecting rod has a first end and a second end, the first end being connected to the crankshaft and the second end being connected to the piston.

[0009] In one embodiment, the center height difference between the first end and the second end is H, where 5mm ≤ H ≤ 25mm;

[0010] And / or, the center width difference between the first end and the second end is L, 50mm≤L≤150mm.

[0011] In one embodiment, the curved connecting rod includes a connecting body, the connecting body including an inclined section and a first straight section and a second straight section disposed at both ends of the inclined section.

[0012] In one embodiment, the outline of the inclined segment is a straight line segment; and / or, the outline of the inclined segment is an arc segment.

[0013] In one embodiment, the cylinder includes a cylinder body, and the refrigerator compressor further includes a bracket arranged side by side with the cylinder body, the bracket being fixedly connected to the motor.

[0014] In one embodiment, the connection between the bracket and the cylinder is provided with a clearance for avoiding the curved connecting rod;

[0015] And / or, the bracket and the cylinder are integrally formed;

[0016] And / or, the motor includes a stator and a rotor disposed within the stator, the rotor being connected to the crankshaft, the stator being spaced apart from the cylinder block and connected to the bracket.

[0017] In one embodiment, the piston is flexibly connected to the second end;

[0018] And / or, the piston and the second end are connected by a pin.

[0019] In one embodiment, the crankshaft includes a main shaft and an eccentric shaft. The main shaft is connected to the motor, and the eccentric shaft is connected above the main shaft and to the first end, wherein the center of the first end is higher than the center of the second end.

[0020] In one embodiment, the motor is connected to the lower shell of the housing via a shock-absorbing structure.

[0021] In one embodiment, the crankshaft includes a main shaft and an eccentric shaft. The main shaft is connected to the motor, and the eccentric shaft is connected below the main shaft and to the first end. The center of the first end is lower than the center of the second end.

[0022] In one embodiment, the motor is connected to the lower shell portion of the housing via a bracket.

[0023] The present invention also proposes a refrigeration device, which includes a refrigerator compressor as described above.

[0024] In the technical solution of this invention, the motor and cylinder are arranged horizontally side by side. Compared with the cylinder being located above or below the motor, the overall height of the refrigerator compressor can be reduced to a certain extent, thereby reducing the space occupied by the refrigerator compressor in the refrigeration equipment. This provides more storage space for food and other items, as well as assembly space for installing other components. It also lowers the center of gravity of the refrigerator compressor, thereby reducing noise. At the same time, the refrigerator compressor has a larger surface area to volume ratio due to its thinness, which helps to dissipate heat more effectively, thereby improving the operating efficiency and service life of the refrigerator compressor.

[0025] The motor and cylinder are arranged horizontally side by side, and a curved connecting rod connects the crankshaft on the motor and the piston in the cylinder. On the one hand, this allows the centers of the first end connecting the crankshaft and the second end connecting the piston to be offset axially along the first shaft hole of the first end, ensuring reliable driving of the piston by the crankshaft through the curved connecting rod. At the same time, it reliably reduces the relative height between the cylinder and the motor, thereby reducing the overall height of the compressor. On the other hand, it helps to enhance the flexibility of the curved connecting rod, so as to reduce the frictional loss between the curved connecting rod and the piston during transmission, improve the efficiency of transmission, and reduce the possibility of wear on the curved connecting rod and the piston, thereby improving the structural reliability and service life of the curved connecting rod and the piston. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of an embodiment of the refrigerator compressor provided by the present invention;

[0028] Figure 2 A schematic diagram of another embodiment of the refrigerator compressor provided by the present invention;

[0029] Figure 3 A schematic diagram of a structure of an embodiment of a curved connecting rod;

[0030] Figure 4 for Figure 3 Side view of the curved connecting rod;

[0031] Figure 5 A schematic diagram of another embodiment of the curved connecting rod;

[0032] Figure 6 for Figure 5 A cross-sectional view of a curved connecting rod;

[0033] Figure 7 This is a schematic diagram of the cylinder block.

[0034] Explanation of icon numbers:

[0035] 10. Shell; 11. Upper shell; 12. Lower shell;

[0036] 20. Curved connecting rod; 21. First end; 22. Second end; 23. Connecting body; 231. Inclined section; 232. First straight section; 233. Second straight section;

[0037] 30. Crankshaft; 31. Main shaft; 32. Eccentric shaft;

[0038] 40. Piston; 41. Pin;

[0039] 51. Cylinder block; 52. Bracket; 53. Clearance opening; 54. Cylinder head;

[0040] 60. Motor; 61. Stator; 62. Rotor; 70. Vibration damping structure;

[0041] 81. Oil pump; 82. Oil suction pipe; 83. Oil tank.

[0042] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0044] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0045] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0046] Existing refrigeration compressors include a crankshaft, connecting rod, and piston. The crankshaft is powered by a motor to rotate, and the piston is driven to reciprocate linearly through the connection between the connecting rod and the crankshaft, and the connection between the connecting rod and the piston. Because the existing cylinder and motor are arranged vertically, and the large and small ends of the connecting rod are at the same height, the highest position of the existing compressor is the cylinder head where the piston is built in, which is not conducive to reducing the height of the compressor.

[0047] To address the aforementioned technical problems, this invention proposes a refrigerator compressor that can be applied to refrigeration equipment, which can be configured as a refrigerator, freezer, or other similar device.

[0048] Please see Figures 1 to 7 In one embodiment of the present invention, the refrigerator compressor includes a housing 10, a motor 60, a cylinder, and a curved connecting rod 20. The motor 60 is connected to a crankshaft 30. The cylinder is arranged horizontally alongside the motor 60, and a piston 40 is movably installed inside the cylinder. The curved connecting rod 20 has a first end 21 and a second end 22. The first end 21 is connected to the crankshaft 30, and the second end 22 is connected to the piston 40. This can effectively reduce the overall height and center of gravity of the refrigerator compressor, while improving the heat dissipation efficiency of the refrigerator compressor, thereby improving the operating efficiency and service life of the refrigerator compressor.

[0049] In the technical solution of this invention, the motor 60 and the cylinder are arranged horizontally side by side. Compared with the cylinder being located above or below the motor 60, the overall height of the refrigerator compressor can be reduced to a certain extent, thereby reducing the space occupied by the refrigerator compressor in the refrigeration equipment, so as to provide more storage space for food and other items and assembly space for installing other components, and lower the center of gravity of the refrigerator compressor, thereby reducing noise. At the same time, the refrigerator compressor has a larger surface area to volume ratio due to its thinness, which helps to dissipate heat more effectively, thereby improving the operating efficiency and service life of the refrigerator compressor.

[0050] The motor 60 and the cylinder are arranged horizontally side by side, and a curved connecting rod 20 connects the crankshaft 30 on the motor 60 and the piston 40 in the cylinder. On the one hand, this allows the centers of the first end 21 connecting the crankshaft 30 and the second end 22 connecting the piston 40 to be offset axially along the first shaft hole of the first end 21, ensuring reliable driving of the piston 40 by the crankshaft 30 through the curved connecting rod 20. At the same time, it reliably reduces the relative height between the cylinder and the motor 60, thereby reducing the overall height of the refrigerator compressor. On the other hand, it helps to enhance the flexibility of the curved connecting rod 20, so as to reduce the frictional loss between the curved connecting rod 20 and the piston 40 during transmission, improve the efficiency of transmission, and reduce the possibility of wear on the curved connecting rod 20 and the piston 40, thereby improving the structural reliability and service life of the curved connecting rod 20 and the piston 40.

[0051] It should be noted that the crankshaft 30 is connected to the motor 60, and partially protrudes from the upper or lower end face of the motor 60 in order to connect to and drive the curved connecting rod 20; the cylinder and the motor 60 are arranged horizontally side by side, so that the cylinder is not higher than the end of the crankshaft 30 protruding from the upper end face, or not lower than the end of the crankshaft 30 protruding from the lower end face. At this time, the center of the piston 40 (or the second end 22) in the cylinder is axially offset from the center of the first end 21 in the first shaft hole of the first end 21.

[0052] The housing 10 includes an upper housing portion 11 and a lower housing portion 12. The connection methods of the upper housing portion 11 and the lower housing portion 12 include, but are not limited to, screw connection, snap-fit ​​connection, and rotational snap-fit. The upper housing portion 11 and the lower housing portion 12 cover each other to form a receiving space for the installation of components such as the motor 60 and the cylinder. The cylinder and the motor 60 can be fixed as a whole and connected to the housing 10 through the cylinder or the motor 60 or an additional bracket 52, thereby improving the installation stability of the cylinder and the motor 60 in the housing 10.

[0053] Please refer to Figure 4 In an embodiment of the present invention, the center height difference between the first end 21 and the second end 22 is H, where 5mm ≤ H ≤ 25mm; this reliably reduces the relative height between the cylinder and the motor 60, which is the center height difference between the two; that is, because there is a center height difference between the first end 21 and the second end 22, when the first end 21 is above the second end 22, the distance between the piston 40 connected to the second end 22 and the lower shell 12 can be effectively reduced, thereby reducing the overall height of the refrigerator compressor; when the first end 21 is below the second end 22, the distance between the motor 60 connected to the first end 21 via the crankshaft 30 and the lower shell 12 can be effectively reduced, thereby reducing the overall height of the refrigerator compressor; thus ensuring that the overall height of the refrigerator compressor is reduced to below 123cm.

[0054] The height difference between the center of the first end 21 and the second end 22 is specified to be greater than or equal to 5mm and less than or equal to 25mm. This is understandable because when H < 5mm, the height difference between the center of the first end 21 and the second end 22 is small. For example, if the first end 21 is higher than the second end 22, the distance between the piston 40 and the lower shell 12 is large, or the relative height between the cylinder and the motor 60 is large. This results in the cylinder with the piston 40 still being at the highest position of the refrigerator compressor, which is not conducive to reducing the overall height of the refrigerator compressor. When H > 25mm, because... The height difference between the center of the first end 21 and the second end 22 is large. Taking the first end 21 being lower than the second end 22 as an example, the crankshaft 30 is too close to the lower shell 12, and the movement of the crankshaft 30 is easily interfered with. Moreover, the overall structural rigidity of the curved connecting rod 20 cannot be reliably guaranteed. Therefore, limiting H to 5mm≤H≤25mm can not only guarantee the structural rigidity of the curved connecting rod 20, extend the service life of the curved connecting rod 20, and ensure the reliability of force transmission, but also reliably reduce the overall height of the refrigerator compressor and reduce the space occupied by the refrigerator compressor in the refrigeration equipment.

[0055] Specifically, the center height difference between the first end 21 and the second end 22 may take values ​​including, but not limited to, 5mm, 10mm, 13mm, 15mm, 16mm, 19mm, 20mm, 22mm, 24mm, and 25mm. In other embodiments, the center height difference may be greater than 25mm or less than 5mm, provided that the overall height and center of gravity allow it.

[0056] Please refer to Figure 4 In the embodiments of the present invention, the center width difference between the first end 21 and the second end 22 is L, 50mm≤L≤150mm, which reliably reduces the possibility of interference between the curved connecting rod 20 and the cylinder, motor 60, etc., and improves the transmission reliability of the curved connecting rod 20. At the same time, in conjunction with the limitation of the center height difference, the structural rigidity and service life of the curved connecting rod 20 are further improved. It can be understood that when L<50mm, the center width difference between the first end 21 and the second end 22 is too small, resulting in the connecting body 23 between the first end 21 and the second end 22 being too short. Since there is a center height difference between the first end 21 and the second end 22, and the cylinder is located on the side of the motor 60, the cylinder is easily too close to the motor 60, which may affect the heat dissipation of the motor 60 and the connection between the curved connecting rod 20 and the piston 40. When L>150mm, the center width difference between the first end 21 and the second end 22 is too large, resulting in the connecting body 23 between the first end 21 and the second end 22 being too long, which may easily affect the transmission stability and structural rigidity of the curved connecting rod 20.

[0057] Specifically, the center width difference between the first end 21 and the second end 22 may take values ​​including but not limited to 50mm, 60mm, 90mm, 100mm, 110mm, 120mm, 140mm, and 150mm. In other embodiments, the center width difference may be greater than 150mm or less than 50mm, provided that the overall height and center of gravity allow it.

[0058] Optionally, in an embodiment of the present invention, the curved connecting rod 20 is at least partially inclined, wherein the curved connecting rod 20 includes a connecting body 23 located between the first end 21 and the second end 22. In this case, at least part of the connecting body 23 is inclined to accommodate the center height difference between the first end 21 and the second end 22, thereby improving the strength and stiffness of the curved connecting rod 20, thereby reducing boundary friction, wear and jamming caused by deformation, improving mechanical efficiency and reliability, and also reducing noise.

[0059] Please see Figures 3 to 4 In an embodiment of the present invention, the connecting body 23 includes an inclined section 231 and a first straight section 232 and a second straight section 233 disposed at both ends of the inclined section 231. The first straight section 232 has a first end 21 at the end away from the inclined section 131, and the second straight section 233 has a second end 22 at the end away from the inclined section 131. This facilitates the adaptive adjustment of the curved connecting rod 20, improves the transmission reliability of the curved connecting rod 20, and reduces the possibility of friction and wear. However, in other embodiments, the connecting body 23 only includes the inclined section 231, that is, the two ends of the inclined section 231 are respectively provided with a first end 21 and a second end 22.

[0060] Specifically, in the embodiments of the present invention, the outline of the inclined segment 231 is a straight line segment; and / or, the outline of the inclined segment 231 is an arc segment. It is understood that the inclined segment 231 can be formed by a straight line segment or multiple straight line segments, or by multiple continuously connected arc segments, or by a connection of straight line segments and arc segments. Specifically, the arc segment can be a circular arc segment, a conical arc segment, an elliptical arc segment, or a spline curve segment.

[0061] Please see Figures 1 to 2 , Figure 7In an embodiment of the present invention, the cylinder includes a cylinder body 51, and the refrigerator compressor also includes a bracket 52 arranged side by side with the cylinder body 51. The bracket 52 is fixedly connected to the motor 60. The cylinder also includes a cylinder head 54 that cooperates with the cylinder body 51 to form a compression space with an opening facing the motor 60. The compression space is used to fill refrigerant and install a piston 40 that can perform linear motion. The motor 60 is fixed above or below the bracket 52 and has a mounting hole that is clearance-fitted with the crankshaft 30. This ensures reliable assembly of the motor 60. The horizontal arrangement with the cylinder also ensures that the crankshaft 30 drives the first end 21 to rotate around the axis of the mounting hole under the drive of the motor 60. The second end 22 of the curved connecting rod 20 drives the piston 40 to reciprocate linearly within the cylinder body 51, thereby compressing the refrigerant within the cylinder body 51 and discharging it from the cylinder.

[0062] The bracket 52 can be connected to the cylinder block 51 to improve the overall integrity of the cylinder and motor 60, while reducing the number of parts and improving assembly efficiency; the crankshaft 30 is a hollow crankshaft 30, which, while meeting the strength requirements, undertakes the oil delivery function under the action of the oil pump 81 and / or the oil suction pipe 82 and the oil sump 83, reducing friction loss and noise.

[0063] Furthermore, in an embodiment of the present invention, the bracket 52 and the cylinder body 51 are integrally formed, that is, the bracket 52 and the cylinder body 51 can be fixed into a whole by means of casting, machining, etc., thereby improving assembly efficiency, simplifying assembly steps, and effectively ensuring that the cylinder body 51 formed by the bracket 52 and the cylinder has better strength to support the compression movement of the piston 40 and the reliable assembly of the motor 60. However, in other embodiments, the cylinder body 51 and the bracket 52 are separately formed.

[0064] Specifically, in an embodiment of the present invention, the motor 60 includes a stator 61 and a rotor 62 disposed within the stator 61. The rotor 62 is connected to the crankshaft 30. The stator 61 is spaced apart from the cylinder block 51 and connected to the bracket 52. It is understood that the main shaft 31 of the crankshaft 30 passes through the inner hole of the rotor 62 and can be connected together by means of threaded connection, keyway connection, etc. The stator 61 is disposed outside the rotor 62 and can be connected to the bracket 52 by means of screw connection, positioning part insertion, etc., thereby mounting the motor 60 on the bracket 52. The installation gap between the stator 61 and the cylinder block 51 can reduce the possibility of interference between the crankshaft 30 connecting rod and the stator 61, and also helps to improve the heat dissipation efficiency of the motor 60.

[0065] Please see Figure 7In an embodiment of the present invention, a clearance opening 53 for avoiding the curved connecting rod 20 is provided at the connection between the bracket 52 and the cylinder 51. It can be understood that because the eccentric shaft 32 of the crankshaft 30 connected to the first end 21 protrudes from the bracket 52, the center of the first end 21 is located on one side of the bracket 52. Combined with the center height difference between the first end 21 and the second end 22, the center of the second end 22 is located on the same plane as the center of the bracket 52, or on the other side of the bracket 52. By providing a clearance opening 53 at the connection between the bracket 52 and the cylinder 51, when the first end 21 is connected to the eccentric shaft 32 of the crankshaft 30, the second end 22 and the connecting body 23 can pass through the clearance opening 53 and connect the second end 22 to the piston 40, ensuring the transmission of force and reliable driving of the piston 40.

[0066] When the crankshaft 30 drives the piston 40 to move via the curved connecting rod 20, due to the shape of the curved connecting rod 20, the second end 22 of the curved connecting rod 20 will generate an additional component force on the piston 40. The direction of this component force is at an angle to the direction of movement of the piston 40, which will cause the piston 40 to generate excessive contact pressure, resulting in wear or even overturning. Optionally, in an embodiment of the present invention, the piston 40 and the second end 22 are flexibly connected, and / or the piston 40 and the second end 22 are connected by a pin 41. It is understood that the piston 40 and the second end 22 can be connected by a flexible joint. In one embodiment, one end of the flexible joint is hinged to the piston 40 by a first pin 41, and the other end is hinged to the second end 22 by a second pin 41, and the first pin 41 and the second end 22 are connected by a flexible joint. The pin 41 is perpendicular to the piston. In another embodiment, the flexible joint is configured as a ball-shaped connector and formed at the second end 22. In this case, the piston 40 is provided with a spherical groove for the ball-shaped connector to be inserted. The flexible joint is an elastomer, and its material includes, but is not limited to, silicone, rubber, and plastic. In yet another embodiment, the piston 40 and the second end 22 are connected by a pin 41, and the pin 41 is an elastic element. This arrangement can enrich the degree of freedom between the piston 40 and the second end 22, thereby eliminating the component force that causes the piston 40 to shake when transmitting force. This reduces the risk of wear on the piston 40 due to excessive contact pressure and reduces frictional losses between the piston 40 and the cylinder 51, and between the piston 40 and the second end 22, thereby improving the operating efficiency and service life of the refrigerator compressor.

[0067] Please see Figure 1In an embodiment of the present invention, the crankshaft 30 includes a main shaft 31 and an eccentric shaft 32. The main shaft 31 is connected to the motor 60, and the eccentric shaft 32 is connected above the main shaft 31 and to the first end 21. The center of the first end 21 is higher than the center of the second end 22. The motor 60 is located below the bracket 52 and is fixedly connected to the bracket 52 through the stator 61. One end of the main shaft 31 passes through the mounting hole of the bracket 52 and the inner hole of the rotor 62 in sequence and is fixedly connected to the rotor 62. The other end is connected to the eccentric shaft, so that the eccentric shaft 32 is located above the bracket 52 and the main shaft 31. At this time, the first shaft hole of the first end 21 is fitted onto the eccentric shaft 32. With the center of the first end 21 being higher than the center of the second end 22, the height of the cylinder is reduced while ensuring reliable transmission of compression power, thereby reducing the overall height of the refrigerator compressor.

[0068] Furthermore, in an embodiment of the present invention, the motor 60 is connected to the lower shell portion 12 of the housing 10 via a shock-absorbing structure 70. It is understood that the shock-absorbing structure 70 may include a vibration-damping support and a seat spring. One side of the vibration-damping support is connected to the bottom of the stator 61 and can be fixed by means of screw connection, snap-fit ​​connection, etc., while the other side is connected to the lower shell portion 12 via a seat spring, so as to improve the installation stability and vibration damping reliability of the motor 60.

[0069] Four shock-absorbing structures 70 can be provided and evenly spaced at the bottom of the stator 61. Any two of the shock-absorbing structures 70 can be integrated to improve assembly efficiency and further enhance the assembly reliability and shock-absorbing reliability of the motor 60 within the housing 10. In addition, since the bracket 52 is connected to the cylinder as a whole, the installation of the shock-absorbing structures 70 can also improve the assembly reliability and shock-absorbing reliability of the cylinder. Furthermore, the crankshaft 30 is a hollow crankshaft 30, and an oil pump 81 is provided on the side of the hollow crankshaft 30 away from the first end 21 to reduce frictional loss during transmission and lower noise.

[0070] Please see Figure 2In an embodiment of the present invention, the crankshaft 30 includes a main shaft 31 and an eccentric shaft 32. The main shaft 31 is connected to the motor 60, and the eccentric shaft 32 is connected below the main shaft 31 and to the first end 21. The center of the first end 21 is lower than the center of the second end 22. The motor 60 is located above the bracket 52 and is fixedly connected to the bracket 52 via the stator 61. One end of the main shaft 31 passes through the mounting hole of the bracket 52 and the inner hole of the rotor 62 in sequence and is fixedly connected to the rotor 62. The other end is connected to the eccentric shaft, so that the eccentric shaft 32 is located below the bracket 52 and the main shaft 31. At this time, the first shaft hole of the first end 21 is fitted onto the eccentric shaft 32. Combined with the setting that the center of the first end 21 is lower than the center of the second end 22, the height of the motor 60 is reduced while ensuring reliable transmission of compression power, thereby reducing the overall height of the refrigerator compressor.

[0071] Furthermore, in an embodiment of the present invention, the motor 60 is connected to the lower shell portion 12 of the housing 10 via a bracket 52. It is understood that the bottom of the stator 61 of the motor 60 is connected to the bracket 52, and the bracket 52 is located below the motor 60 and close to the lower shell portion 12. By providing a damping structure 70 such as a seat spring on the side of the bracket 52 away from the motor 60, the assembly reliability and damping reliability of the motor 60 within the housing 10 can be further improved. In addition, since the bracket 52 is connected to the cylinder as a whole, the provision of the damping structure 70 can also improve the assembly reliability and damping reliability of the cylinder. Furthermore, by using a hollow crankshaft 30, and connecting an oil suction pipe 82 to the side of the hollow crankshaft 30 away from the first end 21, and extending the oil suction pipe 82 into the oil sump 83 below it, frictional loss during transmission can also be reduced, and noise can be lowered.

[0072] The present invention also proposes a refrigeration device, which includes a refrigerator compressor. The specific structure of the refrigerator compressor is as described in the above embodiments. Since the refrigeration device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0073] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A refrigerator compressor, characterized in that, include: case; The motor is connected to the crankshaft; A cylinder is arranged horizontally alongside the motor, and a piston is movably installed inside the cylinder. as well as A curved connecting rod has a first end and a second end, the first end being connected to the crankshaft and the second end being connected to the piston.

2. The refrigerator compressor as described in claim 1, characterized in that, The height difference between the center of the first end and the second end is H, where 5mm ≤ H ≤ 25mm; And / or, the center width difference between the first end and the second end is L, 50mm≤L≤150mm.

3. The refrigerator compressor as described in claim 1, characterized in that, The curved connecting rod includes a connecting body, which includes an inclined section and a first straight section and a second straight section located at both ends of the inclined section.

4. The refrigerator compressor as described in claim 3, characterized in that, The outline of the inclined segment is a straight line segment; and / or, the outline of the inclined segment is an arc segment.

5. The refrigerator compressor as described in claim 1, characterized in that, The cylinder includes a cylinder body, and the refrigerator compressor also includes a bracket arranged side by side with the cylinder body, the bracket being fixedly connected to the motor.

6. The refrigerator compressor as described in claim 5, characterized in that, The connection between the bracket and the cylinder is provided with a clearance opening for avoiding the curved connecting rod; And / or, the bracket and the cylinder are integrally formed; And / or, the motor includes a stator and a rotor disposed within the stator, the rotor being connected to the crankshaft, the stator being spaced apart from the cylinder block and connected to the bracket.

7. The refrigerator compressor as described in claim 1, characterized in that, The piston is flexibly connected to the second end; And / or, the piston and the second end are connected by a pin.

8. The refrigerator compressor as described in any one of claims 1 to 7, characterized in that, The crankshaft includes a main shaft and an eccentric shaft. The main shaft is connected to the motor, and the eccentric shaft is connected above the main shaft and connected to the first end. The center of the first end is higher than the center of the second end.

9. The refrigerator compressor as described in claim 8, characterized in that, The motor is connected to the lower shell of the housing via a shock-absorbing structure.

10. The refrigerator compressor as described in any one of claims 1 to 7, characterized in that, The crankshaft includes a main shaft and an eccentric shaft. The main shaft is connected to the motor, and the eccentric shaft is connected below the main shaft and connected to the first end. The center of the first end is lower than the center of the second end.

11. The refrigerator compressor as described in claim 10, characterized in that, The motor is connected to the lower shell of the housing via a bracket.

12. A refrigeration device, characterized in that, Includes the refrigerator compressor as described in any one of claims 1 to 11.

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