Compressor oil supply system, compressor and refrigeration equipment

Abstract

This invention discloses a compressor oil supply device, a compressor, and a refrigeration device. The compressor oil supply device includes a housing with an inner cavity, a piston slidably disposed within the inner cavity, an oil inlet channel, an oil outlet channel communicating with the inner cavity, and a flat spring plate. The flat spring plate has a frame fixedly disposed relative to the housing, an elastic plate body connected to the inner side of the frame, and a mounting portion disposed on the elastic plate body. The mounting portion is connected and fixedly fixed to the piston. This invention uses a flat-plate structure for the elastic plate body, which occupies less space within the housing and saves more space for piston sliding, thereby facilitating an increase in piston stroke and improving the efficiency of the compressor oil supply device.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and in particular to compressor oil supply devices, compressors, and refrigeration equipment. Background Technology

[0002] Traditional refrigeration compressors utilize a rotary electric motor, which converts rotary motion into linear motion of a piston within the compressor cylinder via a crank-connecting rod structure. This linear motion of the piston compresses the refrigerant. Due to the complexity of manufacturing the various components and the friction that occurs between them, the compressor's efficiency is reduced, resulting in high power consumption.

[0003] Linear compressors use permanent magnets and coils to form linear motors or linear motion, replacing crank-connecting rod mechanisms and rotary motors. By reducing the number of transmission components, friction between components is reduced. To further reduce energy loss caused by friction, lubricating oil is usually supplied to the frictional parts between components with relative motion, that is, lubricating oil needs to be supplied to the compressor piston cylinder. In linear compressors, to achieve oil supply to the drive piston and other friction pairs, the vibration energy of the compressor body is generally used to drive the compressor oil supply device to achieve oil supply between the compressor piston cylinder and the moving pair of the drive piston.

[0004] like Figure 18 As shown, the compressor oil supply device is generally installed inside the compressor cavity of the compressor housing 100, and is installed on the core assembly inside the compressor cavity. The specific core assembly includes a compressor piston cylinder 200, a drive piston that moves inside the compressor piston cylinder 200, and an elastic support part 300. The compressor oil supply device 400 is fixed on the compressor piston cylinder 200, and the compressor piston cylinder 200 is fixed on the compressor housing 100 through the elastic support part 300. The energy generated by the elastic support part 300 during vibration drives the piston inside the compressor oil supply device 400 to move. During the movement of the piston, the compressor oil supply device 400 realizes the oil intake and discharge of oil, thereby realizing the oil supply to the compressor piston cylinder 200.

[0005] Due to size constraints, the piston's stroke space in existing compressor oil supply devices is limited, which inevitably leads to low oil supply efficiency. Summary of the Invention

[0006] The purpose of this invention is to provide a compressor oil supply device to overcome the shortcomings of the prior art. It adopts a flat plate structure with elastic sheet body, which can occupy less space in the housing and save more space for piston sliding, thereby facilitating the increase of piston stroke and improving the efficiency of the compressor oil supply device.

[0007] The compressor oil supply device provided by the present invention includes: a housing having an inner cavity, a piston slidably disposed in the inner cavity, an oil inlet channel communicating with the inner cavity, an oil outlet channel, and a flat spring sheet;

[0008] The flat spring sheet has a frame fixedly disposed relative to the housing, an elastic sheet connected to the inner side of the frame, and a mounting part disposed on the elastic sheet, the mounting part being connected and fixed to the piston.

[0009] Furthermore, the piston has a piston body, a fixing post that protrudes from the piston body toward the flat elastic plate and is fixedly connected to the mounting part, and a counterweight part disposed beside the fixing post, wherein the counterweight part is offset from the elastic plate.

[0010] Furthermore, a clearance space is formed on the flat plate spring sheet at the position opposite to the counterweight part, and the elastic sheet body extends out of the clearance space.

[0011] Furthermore, the mounting portion is located at the center of the flat spring sheet, and two elastic sheets are provided and extended in a curved manner, with the two elastic sheets being centrally symmetrical with respect to the mounting portion.

[0012] Furthermore, the elastic sheet has a fixed end and a free end that are disposed opposite to each other. The fixed end is fixed to the frame and located on the upper side of the mounting part, and the free end is disposed on the mounting part near the bottom.

[0013] Furthermore, the counterweight is integrally formed with the fixed column and extends outward from the fixed column; the counterweight is provided on both opposite sides of the fixed column.

[0014] In the vertical direction, the size of the counterweight first increases and then decreases as it moves away from the fixed column, and the whole is teardrop-shaped; the clearance space is adapted to the shape of the counterweight.

[0015] Furthermore, the maximum distance by which the fixed post protrudes towards the flat spring is not less than the maximum stroke of the piston.

[0016] Furthermore, the housing includes a piston cylinder and a piston cylinder oil inlet and a piston cylinder oil outlet disposed on the bottom wall of the piston cylinder. The inner cavity is disposed inside the piston cylinder. The piston cylinder oil inlet and the piston cylinder oil outlet are respectively connected to the oil inlet channel and the oil outlet channel. The opening directions of the piston cylinder oil inlet and the oil outlet are both parallel to the sliding direction of the piston.

[0017] Furthermore, the piston cylinder oil inlet and the piston cylinder oil outlet are arranged side by side in the horizontal direction.

[0018] Furthermore, the flat spring is disposed between the piston and the oil inlet of the piston cylinder, and the distance between the edge of the flat spring and the bottom wall of the piston cylinder is not greater than the distance between the flat spring and the piston body; a bottom wall limiting portion is formed on the bottom wall of the piston cylinder for abutting against the piston to limit the position of the piston.

[0019] Furthermore, the piston cylinder includes a cylinder body with a piston cavity and a cylinder cover disposed on the side of the cylinder body. The piston moves within the piston cavity, which is exposed outward from the top and bottom sides of the cylinder body. The cylinder cover has an oil passage groove exposed to the piston cavity. The piston cylinder oil inlet and the piston cylinder oil outlet are disposed on the cylinder cover and located at the bottom of the oil passage groove.

[0020] Furthermore, the frame is positioned between the cylinder block and the cylinder block cover, and the mounting part is disposed at the center of the groove of the oil passage.

[0021] Furthermore, the opening size of the oil passage groove is smaller than the cross-sectional size of the piston cavity, and the cylinder cover located at the edge of the oil passage groove is opposite to the piston cavity and forms a piston body limiting part.

[0022] Another embodiment of the present invention discloses a compressor, including a compressor housing with a compressor chamber, a core assembly disposed within the compressor chamber, and a compressor oil supply device. The core assembly is fixed to the compressor housing by an elastic support, and the compressor oil supply device is fixed to the core assembly. A compressor piston cylinder and a drive piston movable within the compressor piston cylinder are disposed on the core assembly. The oil outlet channel communicates with the compressor piston cylinder, and the oil inlet channel communicates with the compressor chamber. Further,

[0023] Another embodiment of the present invention discloses a refrigeration device, including a housing and a refrigeration system disposed on the housing, the refrigeration system including the compressor.

[0024] Compared with the prior art, the present invention provides a flat plate spring on the housing. One end of the elastic plate on the flat plate spring is fixed to the housing, and the other end is used to connect and fix it to the piston. In this way, during the piston movement, the kinetic energy of the piston movement can be converted into the elastic potential energy stored by the deformation of the elastic plate. After the piston stops moving, it can push the piston to move in the correct direction, which can realize the stable movement of the piston within the housing. At the same time, the flat plate structure of the elastic plate occupies less space within the housing, which can save more space for the piston to slide. This can facilitate the increase of the piston stroke and help improve the efficiency of the compressor oil supply device. Attached Figure Description

[0025] Figure 1This is a first structural schematic diagram of the compressor oil supply device disclosed in an embodiment of the present invention;

[0026] Figure 2 This is a second structural schematic diagram of the compressor oil supply device disclosed in an embodiment of the present invention;

[0027] Figure 3 This is an exploded view of the compressor oil supply device disclosed in an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the first internal structure of the compressor oil supply device disclosed in an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the second internal structure of the compressor oil supply device disclosed in an embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of the third internal structure of the compressor oil supply device disclosed in the embodiments of the present invention;

[0031] Figure 7 This is a schematic diagram of the fourth internal structure of the compressor oil supply device disclosed in an embodiment of the present invention;

[0032] Figure 8 This is a schematic diagram of the outer casing of the compressor oil supply device disclosed in an embodiment of the present invention;

[0033] Figure 9 This is a schematic diagram of the structure of the housing base in the compressor oil supply device disclosed in the embodiment of the present invention;

[0034] Figure 10 This is a schematic diagram of the installation structure of the piston and flat plate spring in the compressor oil supply device disclosed in the embodiment of the present invention;

[0035] Figure 11 This is a schematic diagram of the piston structure in the compressor oil supply device disclosed in an embodiment of the present invention;

[0036] Figure 12 This is a first structural schematic diagram of the cylinder cover in the compressor oil supply device disclosed in an embodiment of the present invention;

[0037] Figure 13 This is a schematic diagram of the second structure of the cylinder cover in the compressor oil supply device disclosed in an embodiment of the present invention;

[0038] Figure 14 This is a first structural schematic diagram of the separator in the compressor oil supply device disclosed in an embodiment of the present invention;

[0039] Figure 15 This is a second structural schematic diagram of the separator in the compressor oil supply device disclosed in an embodiment of the present invention;

[0040] Figure 16 This is a schematic diagram of the structure of the oil valve in the compressor oil supply device disclosed in an embodiment of the present invention;

[0041] Figure 17 This is a schematic diagram of the structure of the flat spring sheet in the compressor oil supply device disclosed in the embodiment of the present invention;

[0042] Figure 18 This is a schematic diagram of the installation structure of the compressor oil supply device on the compressor housing disclosed in the embodiments of the present invention;

[0043] Explanation of reference numerals in the attached drawings: 1-Piston cylinder, 11-Cylinder body, 110-Piston chamber, 12-Cylinder cover, 120-Oil groove, 121-Piston body limiting part, 13-Piston cylinder oil inlet, 14-Piston cylinder oil outlet, 15-Bottom wall limiting part.

[0044] 2-Outer shell, 20-Shell groove, 21-Oil inlet chamber, 211-Oil inlet, 212-Oil inlet outlet; 213-Arc-shaped guide section, 22-Oil outlet chamber, 221-Oil outlet inlet, 222-Oil outlet, 23-Outer shell body, 24-Separator, 241-Partition plate, 242-Separator plate, 243-First enclosure plate, 244-Second enclosure plate, 25-Oil inlet hole, 26-Oil outlet hole

[0045] 3-Housing base, 30-Base groove, 31-Positioning protrusion, 32-Positioning groove, 33-Axial limiting part,

[0046] 4-Piston, 41-Piston body, 42-Fixing column, 43-Counterweight,

[0047] 5- Flat spring, 51- Frame, 52- Elastic sheet, 53- Mounting part, 54- Clearance space

[0048] 6-Oil valve, 61-Valve seat frame, 62-Inlet valve plate, 63-Outlet valve plate, 64-Elastic connecting plate.

[0049] 7-Tensioner, 71-Connecting rod, 72-Limiting rod

[0050] 8-Gap, 9-Gasket

[0051] 100 - Compressor housing, 200 - Compressor piston cylinder, 300 - Elastic support, 400 - Compressor oil supply device. Detailed Implementation

[0052] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0053] An embodiment of the present invention discloses a compressor oil supply device for adding lubricating oil to the drive piston cylinder of a linear compressor.

[0054] Specifically, such as Figure 1-4 As shown, the compressor oil supply device in this embodiment includes: a housing and a piston 4 disposed within the housing. The housing includes a piston cylinder 1 with an inner cavity, an outer shell 2 that cooperates with the piston cylinder 1, and a housing base 3 that cooperates with the piston cylinder 1. The piston 4 is slidably disposed within the inner cavity. The piston cylinder 1 extends horizontally in the axial direction and has a bottom wall and side walls disposed opposite to each other. The piston 4 is slidably disposed within the piston cylinder 1 in the horizontal direction.

[0055] The outer casing 2 is provided with an oil inlet channel and an oil outlet channel communicating with the inner cavity. When the piston 4 slides in the inner cavity, it draws oil into the inner cavity through the oil inlet channel and sends the oil out through the oil outlet channel. In this embodiment, the oil inlet channel is connected to the inner cavity of the compressor housing 100 and is used to draw lubricating oil from the compressor housing 100, while the oil outlet channel is connected to the compressor piston cylinder 200, driving the piston to slide within the compressor piston cylinder 200 to achieve compression control of the refrigerant.

[0056] To facilitate the installation and fixation of the piston 4 of the compressor oil supply device in the inner cavity, such as Figure 3 As shown, the piston cylinder 1 includes a cylinder body 11 with a piston cavity 110 and a cylinder cover 12 disposed beside the cylinder body 11, the cylinder cover 12 cooperating with the cylinder body 11. The piston 4 moves within the piston cavity 110, which is exposed outward from the top and bottom sides of the cylinder body 11 and completely penetrates the top and bottom walls of the cylinder body 11; as shown Figure 12 As shown, the cylinder cover 12 is provided with an oil passage groove 120 that exposes to the piston chamber 110. The piston chamber 110 and the oil passage groove 120 are interconnected and form the inner cavity.

[0057] The piston 4 is slidably disposed in the piston chamber 110, and an oil storage space is formed between the piston 4 and the bottom of the oil groove 120. The oil storage space is used to buffer the lubricant sucked into the inner cavity. The oil storage space changes with the size of the piston 4's moving space and changes the air pressure in the oil storage space during the sliding process of the piston 4.

[0058] When piston 4 moves away from cylinder head 12, the volume of oil storage space increases, the air pressure in oil storage space decreases, and oil enters oil storage space through oil inlet channel.

[0059] When piston 4 moves toward cylinder head 12, the volume of the oil storage space decreases, the air in the oil storage space is compressed, the air pressure increases, and the oil is discharged from the oil storage space through the oil outlet channel.

[0060] It is understandable that, such as Figure 12 and Figure 13 As shown, the cylinder cover 12 is provided with a piston cylinder oil inlet 13 and a piston cylinder oil outlet 14 that communicate with the inner cavity. The piston cylinder oil inlet 13 and the piston cylinder oil outlet 14 are arranged to open along the axial direction of the piston cylinder 1, that is, the opening direction of the piston cylinder oil inlet 13 and the piston cylinder oil outlet 14 is parallel to the sliding direction of the piston 4. It can be understood that the piston cylinder oil inlet 13 is connected to the oil inlet channel, and the piston cylinder oil outlet 14 is connected to the oil outlet channel.

[0061] Both the piston cylinder oil inlet 13 and the piston cylinder oil outlet 14 are located on and penetrate the bottom wall of the cylinder cover 12, and are situated at the bottom of the oil passage 120. The piston cylinder oil inlet 13 and the piston cylinder oil outlet 14 are aligned with the axial direction of the piston cylinder 1, ensuring that the direction of oil entry and exit from the oil storage space is the same as the direction of piston 4 movement. This allows for smoother and more efficient oil flow in and out of the oil storage space during piston 4 sliding, thus better realizing the oil supply from the compressor's oil supply device.

[0062] The piston cylinder oil inlet 13 and piston cylinder oil outlet 14 are arranged side by side in the horizontal direction. This structural arrangement enables more efficient oil entry and exit within the oil passage 120. The side-by-side arrangement in the horizontal direction not only facilitates oil entry but also prevents oil residue in the oil storage space. In a specific embodiment, the piston cylinder oil inlet 13 and piston cylinder oil outlet 14 are arranged side by side in the transverse direction, which in this embodiment is horizontal and perpendicular to the sliding direction of the piston 4.

[0063] Of course, in another embodiment, the piston cylinder oil inlet 13 and piston cylinder oil outlet 14 can also be provided on the side wall of the cylinder cover 12 (not shown). The piston cylinder oil inlet 13 and piston cylinder oil outlet 14 can be provided side by side on the same side wall of the cylinder cover 12, or they can be provided on opposite sides of the cylinder cover 12. However, the efficiency of oil entry and exit is lower when they are provided on the side wall of the cylinder cover 12 compared to when they are provided on the bottom wall of the cylinder cover 12.

[0064] In this embodiment, as Figure 10-11As shown, the piston 4 has an elliptical cross-section, and the major axis of the ellipse extends in the transverse direction. This means that the vertical dimension of the piston 4 is smaller than its horizontal dimension, resulting in a flattened overall shape. This structural design shortens the vertical dimension of the piston 4, avoiding excessive use of vertical space and facilitating easier installation and fixation, while effectively utilizing the transverse space.

[0065] In actual installation, the compressor oil supply device 400 is generally installed and fixed between the compressor housing 100 and the compressor piston cylinder 200. The compressor oil supply device 400 is located on the lower side of the compressor piston cylinder 200. However, in actual use, the space on the lower side of the compressor piston cylinder 200 is generally limited and relatively small. If the compressor oil supply device 400 has a large vertical dimension, it will be detrimental to the installation and manufacturing of the compressor.

[0066] In this embodiment, the flat structure of piston 4 effectively reduces the vertical space occupied by the compressor oil supply device 400. Simultaneously, by transferring the vertical volume of piston 4 to the horizontal direction, the vertical height is shortened without reducing the weight of piston 4, thus better enabling piston 4 to maintain continuous sliding within piston cylinder 1 under inertia.

[0067] Furthermore, since the piston 4 slides inside the piston cylinder 1, in order to avoid wear caused by the piston 4 and piston cylinder 1 due to long-term sliding contact, the piston cylinder 1 is made of metal. In a specific embodiment, the cylinder body 11 is made of metal, the piston 4 mainly slides inside the cylinder body 11, and the cylinder cover 12 is preferably made of plastic. The advantage of making the cylinder cover 12 of plastic is that it is easier to manufacture.

[0068] In actual use, the sliding of piston 4 within piston cylinder 1 is synchronized with the oscillation of compressor piston cylinder 200. Compressor piston cylinder 200 is generally fixed to compressor housing 100 by elastic support 300 and oscillates within the compressor chamber of compressor housing 100. When compressor piston cylinder 200 oscillates, it drives piston 4 to oscillate within piston cylinder 1. In this embodiment, to ensure the stability and continuity of piston 4 during oscillation, compressor oil supply device 400 also has a sliding elastic element, which provides a relatively stable driving force during piston 4 sliding.

[0069] The sliding elastic element can convert the kinetic energy of the piston 4 during the sliding process into the elastic potential energy stored by its own deformation. When the piston 4 stops moving and its kinetic energy is zero, the elastic potential energy stored by the sliding elastic element is converted back into the kinetic energy of the piston 4, and drives the piston 4 to move in the opposite direction.

[0070] The sliding elastic element can be a spring. When the piston 4 slides towards the spring, the spring is compressed, and the spring stores energy. Then, the energy stored in the spring can push the piston 4 to move in the opposite direction, so that the piston 4 continuously maintains its oscillation within the piston cylinder 1.

[0071] As a preferred solution, such as Figure 10 and Figure 17 As shown, the sliding elastic element is a flat plate spring 5. The flat plate spring 5 is plate-shaped or sheet-shaped. The flat plate spring 5 has a frame 51 fixedly disposed relative to the housing, an elastic sheet body 52 connected to the inner side of the frame 51, and a mounting part 53 disposed on the elastic sheet body 52. ​​The mounting part 53 is connected and fixed to the piston 4.

[0072] like Figure 4-5 As shown, the frame 51 is positioned on the piston cylinder 1, and the mounting part 53 extends into the inner cavity. In this embodiment, the flat spring 5 is disposed between the bottom of the oil groove 120 of the piston 4 and the cylinder cover 12, and the frame 51 is clamped and positioned between the cylinder cover 12 and the cylinder 11.

[0073] Setting the sliding elastic element as a plate-shaped flat spring 5 can effectively reduce the excessive space occupied by the sliding elastic element in the sliding direction of the piston 4, which helps to increase the sliding stroke of the piston 4 in the horizontal direction. At the same time, setting the flat spring 5 between the piston 4 and the cylinder cover 12 can also allow the flat spring 5 to be continuously maintained by the lubricating oil entering the oil storage space, avoiding the flat spring 5 from being exposed to the outside and causing rust problems.

[0074] Of course, in another embodiment, the flat spring 5 can also be disposed on the piston 4 on the side opposite to the cylinder cover 12.

[0075] In actual use, such as Figure 10 As shown, during the sliding process, the piston 4 drives the mounting part 53 to move. During the movement, the mounting part 53 causes the elastic plate 52 to undergo elastic deformation. One end of the elastic plate 52 is fixed to the frame 51, which is fixed to the piston cylinder 1. Therefore, the elastic plate 52 will be elastically bent under the action of the piston 4. This causes the mounting part 53, which is fixed to the end of the elastic plate 52 away from the frame 51, to move within a certain range with the piston 4. In this way, the kinetic energy of the piston 4 during the sliding process is converted into the elastic potential energy of the elastic plate 52, and after the piston 4 stops moving, it provides the opposite force to drive the piston 4 to move again.

[0076] like Figure 11 and Figure 4-5As shown, in order to facilitate installation and fixation with the mounting part 53, the piston 4 has a piston body 41 and a fixing post 42 that protrudes from the piston body 41 toward the flat spring 5 and is connected and fixed to the mounting part 53. The fixing post 42 is integrally formed with the piston body 41 and protrudes outward from the side of the piston body 41 near the flat spring 5;

[0077] As a preferred option, such as Figure 5 As shown, the shape of the fixing post 42 is adapted to the mounting part 53, and the maximum distance that the fixing post 42 protrudes towards the flat spring 5 is not less than the maximum stroke of the piston 4. The above structure can prevent the piston body 41 from abutting against the frame 51 during movement, and prevent the piston body 41 from impacting the frame 51, making the installation and fixation of the frame 51 more stable.

[0078] In this embodiment, the flat spring 5 is disposed between the piston 4 and the oil inlet 13 of the piston cylinder, and the distance between the edge 51 of the flat spring 5 and the bottom wall of the piston cylinder 1 is not greater than the distance between the flat spring 5 and the piston body 41, that is, the distance between the edge 51 and the bottom of the oil groove 120 is not greater than the distance between the flat spring 5 and the piston body 41; and as Figure 12 As shown, a bottom wall limiting portion 15 is formed on the bottom wall of the piston cylinder 1 for abutting against the piston 4 to limit the position of the piston 4.

[0079] The bottom wall limiting part 15 is used to limit the axial movement of the piston 4, preventing damage to the flat plate spring 5 caused by excessive movement of the piston 4. The above structure is designed so that the bottom wall limiting part 15 first abuts against the piston 4 and limits it, and the bottom wall limiting part 15 plays the main limiting role, so that the position of the piston 4 is limited before the piston body 41 abuts against the frame 51, thereby avoiding the impact of the piston body 41 on the frame 51.

[0080] In a specific embodiment, such as Figure 10 As shown, the flat spring 5 is fixed to the fixed post 42 by bolts, and the bottom wall limiting part 15 is used to abut against the bolts on the fixed post 42 to limit the position of the piston 4 in the axial direction.

[0081] like Figure 5 As shown, in this embodiment, the frame 51 is positioned between the cylinder body 11 and the cylinder cover 12, and the mounting part 53 is disposed at the center of the groove of the oil passage 120.

[0082] The opening size of the oil groove 120 is smaller than the cross-sectional size of the piston cavity 110, and the cross-sectional size of the piston cavity 110 is adapted to the cross-sectional size of the piston body 41, therefore... Figure 5As shown, the opening size of the oil passage 120 is smaller than the cross-sectional size of the piston body 41. The cylinder cover 12, located at the edge of the oil passage 120, is positioned opposite the piston cavity 110 and forms a piston body limiting part 121, which is also positioned opposite the piston body 41.

[0083] The piston body limiting portion 121 is part of the side wall of the cylinder cover 12, and this portion is exposed directly into the piston cavity 110. It abuts against the piston body 41 to limit the stroke of the piston 4. Part of the frame 51 can directly abut against the piston body limiting portion 121, thereby preventing the piston body 41 from impacting the frame 51 during the sliding process of the piston 4, thus effectively protecting the stability of the frame 51 during installation and fixation.

[0084] It should be noted that the size of the fixing post 42 is set to match the mounting part 53, so that the fixing post 42 and the elastic plate 52 are misaligned with each other, thereby effectively preventing the fixing post 42 from abutting against the elastic plate 52 during movement. If the fixing post 42 abuts against the elastic plate 52 during sliding, it will restrict the elastic deformation of the elastic plate 52, thereby restricting the movement stroke of the piston 4.

[0085] Furthermore, the piston 4 also has a counterweight 43 disposed beside the fixed column 42, and the counterweight 43 is offset from the elastic plate 52. Since the fixed column 42 needs to be compatible with the shape of the mounting part 53, its size is inevitably limited; in the prior art, the fixed column 42 is generally cylindrical. The smaller size of the fixed column 42 results in a correspondingly lower weight. However, to maintain the weight of the entire piston 4 within a certain range, the piston 4 generally needs to be lengthened in the axial direction. This inevitably leads to an excessively large axial dimension of the entire device, which limits the stroke of the piston 4.

[0086] Furthermore, such as Figure 11 As shown, in this embodiment, a counterweight 43 is also provided on the side of the fixed column 42, and the counterweight 43 is set to be offset from the elastic plate 52. Without affecting the sliding of the piston 4, the weight of the piston 4 is increased, thereby increasing the inertia of the piston 4 and helping the piston 4 to slide.

[0087] Of course, it can also be understood that the setting of the counterweight 43 can transfer a small section of piston 4 that was originally set in the axial direction to the counterweight 43. In this way, while keeping the overall weight of piston 4 unchanged, the length of piston 4 in the axial direction can be shortened, thereby effectively reducing the size of the compressor oil supply device, which is conducive to the integrated design of the compressor oil supply device and can provide space for increasing the sliding stroke of piston 4.

[0088] like Figure 10 and Figure 17 As shown, in this embodiment, a clearance space 54 is formed on the flat spring 5 at a position opposite to the counterweight 43, and the elastic sheet 52 extends out of the clearance space 54. The clearance space 54 can be a clearance hole provided on the flat spring 5. As a preferred embodiment, the clearance space 54 is formed by the elastic sheet 52 that is curved around it, and the clearance space 54 is the space enclosed between the elastic sheet 52 and the mounting part 53.

[0089] In this embodiment, the counterweight 43 is integrally formed with the fixed column 42 and extends outward from the fixed column 42; the counterweight 43 is provided on both sides of the fixed column 42; the two counterweights 43 are arranged on both sides of the fixed column 42 along the long axis of the piston 4. This structure can make the piston 4 more stable during sliding.

[0090] In this embodiment, the size of the counterweight 43 in the vertical direction first increases and then decreases as it moves away from the fixing post 42, forming an overall teardrop shape; that is, the width of the counterweight 43 in the vertical direction varies. Specifically, the width of the fixing posts 42 on both sides in the horizontal direction first increases and then decreases in the vertical direction, and correspondingly, the clearance space 54 is adapted to the shape of the counterweight 43.

[0091] In this embodiment, the mounting portion 53 is located at the center of the flat spring sheet 5. Two elastic plates 52 are provided and extend in a curved manner, with the two elastic plates 52 being centrally symmetrical with respect to the mounting portion 53. The two elastic plates 52 enhance the elastic potential energy accumulated during deformation, thereby better controlling the sliding of the piston 4. Simultaneously, the arrangement of two elastic plates 52 effectively prevents excessive deformation of the elastic plates 52 due to excessive piston sliding, thus avoiding irreversible bending.

[0092] Both elastic plates 52 extend and bend in a curved manner, and the bending and wrapping form two clearance spaces 54. The two clearance spaces 54 correspond to the two counterweights 43 respectively, and the shapes of the two clearance spaces 54 are also centrally symmetrical about the center of the flat plate elastic plate 5.

[0093] In this embodiment, the elastic sheet 52 has a fixed end and a free end that are arranged opposite to each other. The fixed end is fixed to the frame 51 and is located on the upper side of the mounting part 53. The free end is located on the mounting part 53 near the bottom. This structure makes the clearance space formed by the elastic sheet 52 arc-shaped, so that the formed clearance space 54 can better match the counterweight part 43.

[0094] like Figure 6-7 As shown, the oil inlet channel includes an oil inlet cavity 21 disposed on the outer shell 2 and extending horizontally, an oil inlet 211 disposed on the side wall of the oil inlet cavity 21, and an oil inlet outlet 212 disposed on the bottom wall of the oil inlet cavity and communicating with the inner cavity.

[0095] The sidewall of the oil inlet chamber 21 has an arc-shaped guide portion 213 for guiding the flow between the oil inlet 211 and the oil outlet 212.

[0096] In this embodiment, the oil inlet chamber 21 extends horizontally and draws oil from the side wall and exits from the bottom wall. Oil enters the oil inlet chamber 21 through the oil inlet 211 located on the side wall, flows along the arc-shaped guide section 213, and finally exits the oil inlet chamber 21 through the oil inlet outlet 212 on the bottom wall. This structure allows the oil entering through the oil inlet 211 to form a vortex at the oil inlet outlet 212 after entering the oil inlet chamber 21. This vortex generation has a pressurizing effect, allowing the oil in the oil inlet chamber 21 to exit more quickly from the oil inlet outlet 212, thereby increasing the oil suction efficiency of the oil inlet 211.

[0097] In this embodiment, the oil inlet 211 is located at the bottom of the side wall of the oil inlet chamber 21, and the oil inlet 211 and the oil outlet 212 are offset from each other in the lateral direction. That is, the projection of the oil inlet 211 on the horizontal plane and the projection of the oil outlet 212 on the horizontal plane are offset from each other, and there is a certain gap between their projections in the lateral direction.

[0098] One end of the arc-shaped guide section 213 extends and is disposed at the oil inlet 211, and the other end of the arc-shaped guide section 213 extends and is disposed above the oil outlet 212, and the arc-shaped guide section 213 bends away from the oil outlet 212.

[0099] The above-described structure makes the curvature of the arc-shaped guide section 213 more gradual, thus achieving a better flow guiding effect. As a preferred embodiment, the shape of the arc-shaped guide section 213 conforms to an Archimedean spiral, which allows for better vortex formation within the oil inlet chamber 21.

[0100] Furthermore, the opening direction of the oil inlet outlet 212 is parallel to the sliding direction of the piston 4, or the opening direction of the oil inlet outlet 212 points towards the sliding direction of the piston 4, that is, the opening direction of the oil inlet outlet 212 is parallel to the axial direction of the piston 4. Correspondingly, the extension direction of the oil inlet chamber 21 is also parallel to the axial direction of the piston 4. This structural arrangement makes the oil inlet circuit smoother, thereby improving the efficiency of oil entering and exiting the oil groove 120, and thus improving the oil supply efficiency of the compressor oil supply device.

[0101] The oil outlet channel includes an oil outlet cavity 22 provided on the outer shell 2 and extending horizontally, an oil outlet 221 provided on the bottom wall of the oil outlet cavity 22, and an oil outlet 222 provided on the side wall of the oil outlet cavity 22. The oil outlet 221 communicates with the inner cavity.

[0102] To facilitate communication with the inner cavity, the oil outlet chamber 22 and the oil inlet chamber 21 are arranged side by side in the horizontal direction, and the oil outlet 222 is located at the top of the oil outlet chamber 22.

[0103] To facilitate the installation of the oil inlet chamber 21 and the oil outlet chamber 22 on the outer casing 2, such as... Figure 8 , Figure 14 and Figure 15 As shown, the outer casing 2 includes an outer casing body 23 with a casing groove 20 and a partition 24 positioned within the casing groove 20. The partition 24 has a partition plate 241 parallel to the bottom of the casing groove 20 and a partition plate 242 disposed on the partition plate 241. An oil cavity is formed between the partition plate 241 and the bottom of the casing groove 20. The partition plate 242 is disposed within the oil cavity and divides the oil cavity into the oil inlet cavity 21 and the oil outlet cavity 22.

[0104] The outer shell 2 is configured to cooperate with the outer shell body 23 by the partition 24, and the partition 24 is provided with a partition plate 242. The oil cavity in the shell groove 20 is divided into the oil inlet cavity 21 and the oil outlet cavity 22 by the partition plate 242, which can facilitate the setting of the oil inlet cavity 21 and the oil outlet cavity 22 on the outer shell 2. The partition 24 is configured to be detachable from the outer shell 23, which also facilitates the processing, manufacturing and installation of the partition 24.

[0105] Meanwhile, in this embodiment, both the separator 24 and the outer shell 23 are made of plastic. Using plastic material facilitates the processing and manufacturing of parts, especially for some irregular structures, which can be easily processed and manufactured through injection molding.

[0106] To facilitate the installation and positioning of the separator 24 within the housing groove 10, the opening of the housing groove 20 faces the axial direction of the piston cylinder 1, as shown below. Figure 15 As shown, the oil inlet outlet 212 and the oil outlet inlet 221 are arranged side by side on the partition plate 241 in the transverse direction. The shape of the housing groove 20 is adapted to the shape of the piston cylinder 1, and the housing groove 20 is sleeved on the piston cylinder 1, with the piston cylinder 1 and the housing groove 20 having an interference fit.

[0107] One end of the piston cylinder 1 extends into the housing groove, and the partition 24 is positioned against the bottom of the housing groove 20. Specifically, the cylinder cover 12 abuts against the piston cylinder 1, and the bottom wall of the cylinder cover 12 can directly abut against the partition 24, or other components can be used to transmit the abutment force between them. After the outer shell 2 and the piston cylinder 1 are installed and fixed, the partition 24 is pressed and fixed to the bottom of the housing groove 20 under the pressure of the cylinder cover 12.

[0108] The above embodiment provides a scheme in which the oil inlet chamber 21 and the oil outlet chamber 22 are formed by separating the separate partition 24 and the outer shell body 23 with the shell groove 10. In another embodiment, the partition 24 can also be fixedly connected to the outer shell body 23, or even the partition 24 and the outer shell body 23 can be integrally formed. Since the outer shell body 21 is made of plastic, it can be easily injection molded as a whole, and the oil inlet chamber 21 and the oil outlet chamber 22 are naturally formed after molding.

[0109] like Figure 5-7 As shown, the oil inlet channel also has an oil inlet hole 25 disposed on the outer casing 23 and communicating with the oil inlet cavity 21;

[0110] The oil outlet channel also has an oil outlet hole 26 disposed on the outer casing 23 and communicating with the oil outlet cavity 22;

[0111] The oil inlet 25 and the oil outlet 26 are respectively disposed on the side wall of the outer casing 23, and the outlet of the oil outlet 26 and the inlet of the oil inlet 25 are opposite to each other and are respectively disposed on the top and bottom surfaces of the outer casing 2.

[0112] Correspondingly, the oil inlet 211 of the oil inlet chamber 21 and the oil outlet 222 of the oil outlet chamber 22 are also opposite each other in the vertical direction. The oil inlet 211 is opposite to the oil inlet hole 25 and is connected to it. The oil outlet 222 is opposite to the oil outlet hole 26 and is connected to it.

[0113] In this embodiment, by arranging the oil inlet chamber 21 and oil outlet chamber 22 side by side in the horizontal direction and arranging the oil outlet hole 26 and oil inlet hole 25 opposite each other in the vertical direction, the compressor oil supply device can be easily installed and fixed in the compressor cavity. In the prior art, the oil outlet hole 26 is generally connected and fixed to the compressor piston cylinder 200, while the oil inlet hole 25 is directly exposed to the compressor cavity inside the compressor housing 100. The lubricating oil is generally placed directly at the bottom of the compressor cavity, and the oil inlet hole 25 is used to directly draw oil from the bottom of the compressor cavity.

[0114] In existing technologies, when the oil inlet chamber 21 and the oil outlet chamber 22 are arranged side by side in the transverse direction, the oil inlet holes 25 and oil outlet holes 26, which are respectively connected to the oil inlet chamber 21 and the oil outlet chamber 22, are generally set to be staggered. This structural design makes it inconvenient to implement the installation design of the compressor oil supply device. In this embodiment, since the positions of the oil inlet hole 25 and the oil outlet hole 26 are opposite, the position of the oil inlet hole 25 can be determined according to the installation position of the oil outlet hole 26 on the compressor piston cylinder 200, thereby enabling better design and installation of the compressor oil supply device 400.

[0115] To ensure that the oil outlet 26 and the oil inlet 25 are positioned relative to each other, in a specific embodiment, the partition plate 242 is at least inclined relative to the horizontal plane. The arc-shaped guide portion 213 is disposed on the partition plate 242 on one side of the oil inlet chamber 21.

[0116] Furthermore, the inlet of the oil inlet 25 is located at the center of the bottom surface of the outer casing 2 in the lateral direction. Since the shape of the outer casing 2 matches the shape of the piston cylinder 1, and the piston cylinder 1 is also elliptical, when the inlet of the oil inlet 25 is located at the center of the bottom surface of the outer casing 2, the inlet of the oil inlet 25 is precisely at the lowest point of the outer casing 2. Because the bottom of the compressor chamber is also curved, when the inlet of the oil inlet 25 is precisely at the lowest point of the outer casing 2, the compressor oil supply system can be installed at the center of the compressor chamber, thereby facilitating the extraction of oil accumulated in the lowest depression within the compressor chamber.

[0117] The partition plate 242 has a partition portion disposed between the oil inlet chamber 21 and the oil outlet chamber, a first enclosure plate 243 and a second enclosure plate 244 disposed at both ends of the partition portion and integrally formed with the partition portion; the arc-shaped guide portion 213 is disposed on the partition portion on the side facing the oil inlet chamber 21; the first enclosure plate 243 and the second enclosure plate 244 form an S-shape with the partition portion, and both the first enclosure plate 243 and the second enclosure plate 244 abut against the bottom of the housing groove 20.

[0118] Both the first enclosure 243 and the second enclosure 244 extend along the edge of the partition 241, and the oil inlet 211 is formed between the free end of the first enclosure 243 and the partition, and the oil outlet 222 is formed between the free end of the second enclosure 244 and the partition.

[0119] like Figure 16 As shown, the compressor oil supply system also includes an oil valve 6 disposed between the piston cylinder 1 and the partition plate 241. The oil valve 6 includes a valve seat frame 61, an inlet valve plate 62, and an outlet valve plate 63. The inlet valve plate 62 and the outlet valve plate 63 are both fixed to the valve seat frame 61 by their respective elastic connecting pieces 64. The valve seat frame 61 is clamped and fixed between the piston cylinder 1 and the partition plate 241. It can be understood that, as Figure 3 As shown, in order to prevent oil leakage, gaskets 9 are provided between the oil valve 6 and the piston cylinder 1, and between the oil valve 6 and the partition plate 241.

[0120] The piston cylinder 1 is provided with an oil inlet clearance space opposite to the oil inlet valve plate 62. The partition plate 241 is provided with an oil inlet limiting part for abutting against the oil inlet valve plate 62. The oil inlet limiting part is located at the edge of the oil inlet outlet 212. In the initial state, the oil inlet valve plate 62 blocks the oil inlet outlet 212.

[0121] The piston cylinder 1 is provided with an oil outlet limiting part for abutting against the oil outlet valve plate 63. The oil outlet limiting part is located at the edge of the oil outlet 14 of the piston cylinder. The partition plate 241 is provided with an oil outlet clearance space opposite to the oil outlet valve plate 63. In the initial state, the oil outlet valve plate 63 blocks the oil outlet 14 of the piston cylinder.

[0122] When the piston 4 moves away from the cylinder head 12, the oil inlet valve plate 62 is moved towards the piston 4 by the suction force of the piston 4. The end of the oil inlet valve plate 62 away from the elastic connecting piece 64 opens, the elastic connecting piece 64 undergoes elastic deformation, and the oil inlet valve plate 62 bends towards the oil inlet clearance space, thereby opening the oil inlet outlet 212. At this time, the oil outlet valve plate 62 is abutted and fixed on the oil outlet limiting part under the suction force of the piston 4, and blocks the piston cylinder oil outlet 14; at this time, only oil can be inlet and not outlet, and the oil enters the oil passage 120 through the oil inlet channel.

[0123] When the piston 4 moves toward the cylinder cover 12, the end of the oil outlet valve plate 63 away from the elastic connecting piece 64 is pushed by the piston 4 and moves away from the piston 4. The oil outlet valve plate 63 bends and opens toward the oil outlet clearance space, thereby opening the piston cylinder oil outlet 14. At this time, the oil inlet valve plate 62 is blocked and limited by the oil inlet limiting part, thereby blocking the oil inlet outlet 212. During this process, only oil can be discharged and not oil can be supplied.

[0124] like Figure 12-15 As shown, in this embodiment, the size of the piston cylinder oil inlet 13 is larger than the size of the oil inlet valve plate 62, and the piston cylinder oil inlet 13 forms the oil inlet clearance space;

[0125] The size of the oil outlet 221 is larger than the size of the oil outlet valve plate 63, and the oil outlet 221 forms the oil outlet clearance space.

[0126] The size of the oil inlet 211 is smaller than the size of the oil inlet valve plate 62, and the oil inlet limiting part is disposed on the partition plate and located at the edge of the oil inlet 211;

[0127] The size of the piston cylinder oil outlet 14 is smaller than the size of the oil outlet valve plate 63, and the oil outlet limiting part is provided on the piston cylinder 1 and located at the edge of the piston cylinder oil outlet 14.

[0128] The elastic connecting piece 64 includes a first elastic connecting piece and a second elastic connecting piece. The oil inlet valve piece 62 is fixed to the valve seat frame 61 by the first elastic connecting piece. The first elastic connecting piece is fixed to the oil inlet valve piece 62 at a position near the upper part.

[0129] The oil outlet valve plate 63 is fixed to the valve seat frame 61 by a second elastic connecting piece, and the second elastic connecting piece is fixed to the oil inlet valve plate 63 near the lower part. The oil inlet valve plate 62 and the oil inlet valve plate 63 are arranged in a centrally symmetrical manner.

[0130] In the above embodiment, the outer casing 21 is sleeved on the outside of the piston cylinder 1. During the sliding process of the piston 4, the piston cylinder 1 is prone to detaching from the outer casing 21. Therefore, in order to better achieve the installation and fixation of the outer casing 21 on the piston cylinder 1, such as... Figure 1-3 and Figure 9 As shown, the housing is also provided with a housing base 3. The outer shell 21 and the housing base 3 are located on opposite sides of the piston cylinder 1 and are respectively fitted onto the outside of the piston cylinder 1.

[0131] A tensioning member 7 is provided between the base 3 and the outer shell 2 to restrict the base 3 and the outer shell 1 from moving away from each other.

[0132] One end of the tensioning member 7 is fixed to the outside of the outer shell 2, and the other end of the tensioning member 7 is detachably connected and fixed to the shell base 3.

[0133] The tensioning member 7 includes a connecting rod 71 fixed on the outer shell 2 and a limiting rod 72 protruding laterally from the connecting rod 71;

[0134] The housing base 3 is provided with a positioning protrusion 31, and the limiting rod 72 abuts against the side wall of the housing body 2 away from the positioning protrusion 31.

[0135] The positioning protrusion 31 is provided with a positioning groove 32 that is adapted to the connecting rod 72, and the connecting rod 71 is fastened in the positioning groove 32.

[0136] Both the base 3 and the outer shell 2 are interference-fitted with the cylinder body 11, and the outer shell 21 is sleeved on the cylinder cover 12 and the cylinder cover 12 is pressed and fixed on the cylinder body 11.

[0137] The base 3 is provided with a base groove 30 adapted to the piston cylinder 1. One end of the piston cylinder 1 is positioned in the base groove 30. An axial limiting part 33 is provided in the base groove 30 to abut against the piston cylinder 1 and limit its movement. The axial limiting part 33 abuts against the piston cylinder 1 to restrict the axial movement of the piston cylinder 1 within the base groove 30.

[0138] A gap 8 is provided between the base 3 and the outer shell 2, and part of the cylinder 11 is exposed outward from the gap 8. The gap facilitates heat dissipation from the metal cylinder 11 and better reduces wear on the piston 4.

[0139] Since the cylinder body 11 is wrapped by the base 3 and the outer shell 2 on both sides, its heat dissipation performance is relatively poor. Setting a gap between the base 3 and the outer shell 2 can not only facilitate the heat dissipation of the cylinder body 11, but also facilitate the assembly or disassembly of the compressor oil supply device.

[0140] Both the base 3 and the outer shell 2 can be made of plastic, thus facilitating processing and manufacturing.

[0141] Another embodiment of the present invention discloses a compressor, including a compressor housing having a compressor chamber, a core assembly disposed in the compressor chamber, and the compressor oil supply device. The core assembly is fixed to the compressor housing by an elastic support, and the compressor oil supply device is fixed to the core assembly. The core assembly is provided with a compressor piston cylinder and a drive piston movable in the compressor piston cylinder. The oil outlet channel communicates with the compressor piston cylinder, and the oil inlet channel communicates with the compressor chamber.

[0142] Another embodiment of the present invention discloses a refrigeration device, including a housing and a refrigeration system disposed on the housing, the refrigeration system including the compressor.

[0143] The above description, based on the embodiments shown in the figures, details the structure, features, and effects of the present invention. The above description is only a preferred embodiment of the present invention, but the present invention is not limited to the scope of implementation shown in the figures. Any changes made in accordance with the concept of the present invention, or equivalent embodiments modified to have equivalent changes, that do not exceed the spirit covered by the specification and figures, should be within the protection scope of the present invention.

Claims

1. A compressor oil supply device characterized by comprising: The utility model relates to a kind of oil pump, including: The shell with inner cavity and the piston slidingly arranged in the inner cavity, oil inlet channel communicated with the inner cavity, oil outlet channel and flat spring sheet; The flat spring sheet has the frame fixedly arranged relative to the shell, the elastic sheet body connected to the inside of frame and the mounting portion provided on the elastic sheet body, and the mounting portion is connected and fixed with the piston;The shell includes the piston cylinder with inner cavity, the outer shell cooperatively arranged with the piston cylinder, the oil inlet channel includes the oil inlet cavity arranged on the outer shell and extended in horizontal direction, the oil inlet entrance arranged on the side wall of oil inlet cavity and the oil inlet exit arranged on the bottom wall of oil inlet cavity and communicated with the inner cavity, the side wall of oil inlet cavity has arc flow guide portion for guiding flow between the oil inlet entrance and the oil inlet exit, one end of the arc flow guide portion is extended and arranged at the oil inlet entrance, the other end of the arc flow guide portion is extended and arranged above the oil inlet exit, and the arc flow guide portion is bent away from the oil inlet exit.

2. The compressor oil supply arrangement of claim 1, wherein: The piston has piston body and fixed column protruding from the piston body to the flat spring sheet and connected with the mounting portion, and counterweight portion arranged beside the fixed column, and the counterweight portion is mutually dislocated with the elastic sheet body.

3. The compressor oil supply arrangement of claim 2, wherein: The flat spring sheet is formed with avoiding space opposite the position of the counterweight portion, and the elastic sheet body is extended outside the avoiding space.

4. The compressor oil supply arrangement of claim 2, wherein: The mounting portion is arranged at the central position of the flat spring sheet, the elastic sheet body is provided with two and arranged in curve, and the two elastic sheet bodies are centrally symmetrical relative to the mounting portion.

5. The compressor oil supply arrangement of claim 4, wherein: The elastic sheet body has opposite fixed end and free end, the fixed end is fixed on the frame and located on the upper side of the mounting portion, and the free end is arranged at the position close to the bottom of the mounting portion.

6. The compressor oil supply arrangement of claim 3, wherein: The counterweight portion is integrally formed with the fixed column and extended outward from the fixed column, and the counterweight portion is arranged on both sides of the fixed column. In vertical direction, the size of the counterweight portion increases first and then decreases away from the fixed column, and the avoiding space is matched with the shape of the counterweight portion.

7. The compressor oil supply arrangement of claim 2, wherein: The maximum distance of the fixed column protruding to the flat spring sheet is not less than the maximum movement stroke of the piston.

8. The compressor oil supply arrangement of claim 1, wherein: The shell includes piston cylinder and piston cylinder oil inlet and piston cylinder oil outlet arranged on the bottom wall of the piston cylinder, the inner cavity is arranged in the piston cylinder, and the piston cylinder oil inlet and the piston cylinder oil outlet are communicated with the oil inlet channel and the oil outlet channel respectively;The opening direction of the piston cylinder oil inlet and the piston cylinder oil outlet is parallel to the sliding direction of the piston.

9. The compressor oil supply arrangement of claim 8, wherein: The piston cylinder oil inlet and the piston cylinder oil outlet are arranged side by side in horizontal direction.

10. The compressor oil supply arrangement of claim 8, wherein: The flat spring sheet is arranged between the piston and the piston cylinder oil inlet, and the distance between the frame of the flat spring sheet and the piston cylinder bottom wall is not greater than the distance between the flat spring sheet and the piston body, and the bottom wall limiting portion for abutting with the piston to limit the position of the piston is formed on the piston cylinder bottom wall.

11. The compressor oil supply arrangement of claim 8, wherein: The piston cylinder comprises a cylinder body with a piston cavity and a cylinder cover arranged beside the cylinder body, the piston moves in the piston cavity, the piston cavity is exposed from the top and bottom of the cylinder body, the cylinder cover has an oil passing groove exposed to the piston cavity, the oil inlet and the oil outlet of the piston cylinder are arranged on the cylinder cover and located at the bottom of the oil passing groove.

12. The compressor oil supply arrangement of claim 11, wherein: The frame is positioned between the cylinder body and the cylinder cover, and the mounting portion is arranged at the center of the slot of the oil passing groove.

13. The compressor oil supply arrangement of claim 12, wherein: The size of the slot of the oil passing groove is smaller than the size of the cross section of the piston cavity, and the cylinder cover at the edge of the oil passing groove is opposite to the position of the piston cavity and forms a piston body limiting portion.

14. A compressor characterized by: The compressor comprises a compressor shell with a compressor cavity, a movement assembly arranged in the compressor cavity, and the compressor oil supply device according to any one of claims 1 to 13, the movement assembly is fixed on the compressor shell through an elastic support portion, the compressor oil supply device is fixed on the movement assembly, the movement assembly is provided with a compressor piston cylinder and a driving piston moving in the compressor piston cylinder, the oil outlet channel is communicated with the compressor piston cylinder, and the oil inlet channel is communicated with the compressor cavity.

15. A refrigeration appliance characterized in that, The refrigeration system comprises a box body and a compressor according to claim 14 arranged on the box body.

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