Compressor, refrigeration device and oil stabilizing ring

Abstract

A compressor, a refrigeration device and an oil stabilizing ring, belonging to the technical field of compressors. The compressor comprises a housing; a motor installed in the housing; a pump body assembly comprising an air cylinder, the air cylinder being installed in the housing and located on the lower side of the motor; and an oil stabilizing ring installed in the housing and located between the air cylinder and the motor, at least part of the outer periphery of the oil stabilizing ring being spaced apart from the inner wall of the housing.

Description

Compressors, refrigeration equipment and oil stabilizer rings

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on the Chinese patent application numbers: 202410077924.5 and 202420131212.2, and the application date is January 18, 2024, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into this application as a reference. Technical Field

[0003] The present application relates to the technical field of compressors, and in particular to a compressor, a refrigeration device and an oil stabilizing ring. Background Art

[0004] During compressor operation, the motor assembly rotates the crankshaft, compressing the gas through the pump assembly. However, the high-speed rotation of the motor's rotor and crankshaft, combined with the high-pressure gas at the pump assembly's exhaust port, creates a turbulent flow field, disrupting the stability of the compressor's oil sump. This causes the lubricating oil in the sump to move upward along with the refrigerant gas, even reaching the upper space of the motor and causing the oil sump's level to drop. Furthermore, because the pressure in the lower space of the motor assembly is greater than that in the upper space, the lubricating oil easily accumulates on the motor side, resulting in a slow return flow. This causes the oil sump's oil level to be too low, affecting the lubrication of the pump assembly's moving pairs, increasing wear between components, and ultimately impacting the compressor's reliability. Summary of the Invention

[0005] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a compressor, a refrigeration device and an oil stabilizer ring to improve the stability of the oil level of the lubricating oil in the compressor and ensure the reflux efficiency of the lubricating oil.

[0006] In a first aspect, the present application provides a compressor, comprising:

[0007] case;

[0008] a motor, mounted in the housing;

[0009] A pump assembly, comprising a cylinder, wherein the cylinder is mounted in the housing and located below the motor;

[0010] An oil stabilizing ring is installed in the housing and located between the cylinder and the motor. At least a portion of the outer periphery of the oil stabilizing ring is spaced apart from the inner wall of the housing.

[0011] According to one embodiment of the present application, the oil stabilizing ring is connected to the inner wall of the housing.

[0012] According to one embodiment of the present application, the outer periphery of the oil stabilizing ring is provided with a notch recessed toward the axis of the oil stabilizing ring, the oil stabilizing ring is spaced apart from the inner wall of the shell at the position of the notch, and the outer periphery of the oil stabilizing ring is connected to the inner wall of the shell at a position where the notch is not provided.

[0013] According to one embodiment of the present application, a plurality of the notches are provided, and the plurality of the notches are spaced apart along the circumference of the oil stabilizing ring.

[0014] According to one embodiment of the present application, the spacings between at least two adjacent pairs of the notches are set differently.

[0015] According to one embodiment of the present application, at least two of the notches are configured in different shapes.

[0016] According to one embodiment of the present application, the spacings between at least two pairs of adjacent notches are set differently, and the shapes of at least two of the notches are set differently.

[0017] According to one embodiment of the present application, the outer periphery of the notch is one of an arc shape, a straight line shape, a broken line shape and a corrugated shape.

[0018] According to one embodiment of the present application, the oil stabilizing ring is provided with a return hole penetrating in the up-down direction.

[0019] According to one embodiment of the present application, a plurality of reflow holes are provided on the oil stabilizing ring, and the plurality of reflow holes are distributed along the circumference of the oil stabilizing ring.

[0020] According to one embodiment of the present application, one of the plurality of reflow holes corresponds to the sliding vane groove of the cylinder in the up and down direction.

[0021] According to one embodiment of the present application, the pump body assembly further includes:

[0022] The upper bearing is mounted on the upper surface of the cylinder. The oil stabilizing ring is located on the upper side of the upper bearing. The upper bearing is provided with a connecting hole. The connecting hole and the return hole are staggered in the vertical direction.

[0023] According to one embodiment of the present application, the pump body assembly further includes:

[0024] A muffler is installed on the side of the upper bearing away from the cylinder. The muffler is provided with an exhaust port. The oil stabilizing ring is arranged outside the muffler, and the inner ring of the oil stabilizing ring is spaced apart from the muffler.

[0025] According to one embodiment of the present application, the thickness of the oil stabilizing ring in the vertical direction is W1, and the thickness of the main part of the upper bearing in the vertical direction is W2, satisfying:

[0026] 3mm≤W1≤W2.

[0027] According to one embodiment of the present application, the cross-sectional shape of the reflow hole in the radial direction is circular, elliptical or polygonal.

[0028] According to one embodiment of the present application, the cross-sectional size of the reflow hole in the radial direction is arranged to vary along the axial direction.

[0029] According to one embodiment of the present application, the reflow hole is arranged in a columnar shape.

[0030] According to one embodiment of the present application, the height of the housing in the vertical direction is H, and the distance between the upper surface of the oil stabilizing ring and the upper surface of the housing is H1, satisfying:

[0031] 2 / 5≤H1 / H≤7 / 10.

[0032] According to one embodiment of the present application, the motor is spaced apart from the inner side wall of the housing.

[0033] In a second aspect, the present application provides a refrigeration device comprising a compressor as described in any one of the first aspects.

[0034] In the third aspect, the present application provides an oil stabilizing ring, which is applied to a compressor. The outer periphery of the oil stabilizing ring is provided with a notch recessed toward the axis of the oil stabilizing ring. The oil stabilizing ring is suitable for being spaced apart from the inner wall of the compressor casing at the position of the notch. The outer periphery of the oil stabilizing ring is suitable for being connected to the inner wall of the compressor casing at a position where the notch is not provided.

[0035] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0037] FIG1 is a schematic diagram of the structure of a compressor provided in an embodiment of the present application;

[0038] Figure 2 is an enlarged view of A in Figure 1;

[0039] FIG3 is a schematic diagram of the structure of a pump assembly according to an embodiment of the present application;

[0040] FIG4 is a second structural diagram of a pump assembly provided in an embodiment of the present application;

[0041] FIG5 is a schematic diagram of the structure of an oil stabilizing ring according to an embodiment of the present application;

[0042] FIG6 is one of the structural schematic diagrams of the upper bearing provided in an embodiment of the present application.

[0043] Reference numerals:

[0044] compressor 10;

[0045] Housing 100, main housing 110, upper housing 120, lower housing 130, mounting cavity 140, base 150;

[0046] Pump body assembly 200, upper bearing 210, communicating hole 211, exhaust passage 212, upper cylinder 220, vane groove 221, partition 230, lower cylinder 240, lower bearing 250, crankshaft 260, main shaft portion 261, eccentric portion 262, muffler 270, vane 280;

[0047] Motor 300, stator 310, rotor 320;

[0048] Exhaust pipe 400;

[0049] Liquid reservoir 500, air intake pipe 510;

[0050] Oil stabilizing ring 600 , notch 610 , and return hole 620 . Modes for Carrying Out the Invention

[0051] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0052] The following describes a compressor 10 according to an embodiment of the present application with reference to Figures 1-6. The compressor 10 according to the embodiment of the present application can be used in refrigeration systems or heat pump systems, serving as a core component of the system, providing the system with high-temperature, high-pressure refrigerant. The compressor 10 can be used in refrigeration systems such as air conditioners, refrigerators, and water dispensers, as well as heat pump systems such as air-to-energy water heaters and floor heating systems.

[0053] As shown in FIG. 1 , a compressor 10 provided in an embodiment of the present application includes a housing 100 , a motor 300 , a pump body assembly 200 and an oil stabilizing ring 600 .

[0054] An installation cavity 140 is formed in the housing 100 , and the motor 300 , the pump assembly 200 and the oil stabilizing ring 600 are all fixedly installed in the installation cavity 140 .

[0055] It is understood that the pump assembly 200 and the motor 300 can be fixed to the housing 100 by welding, or by shrink fitting, or by other feasible fixing methods, which are not specifically limited here. The bottom of the mounting cavity 140 is formed into an oil pool, which contains lubricating oil. The lubricating oil is used to lubricate and cool the pump assembly 200 and the motor 300, thereby improving the operating stability of the compressor 10.

[0056] As shown in FIG1 , the housing 100 of the embodiment of the present application may include a main housing 110, an upper housing 120, and a lower housing 130. The main housing 110 may be cylindrical, the upper housing 120 may be fixedly connected to the upper end of the main housing 110, the lower housing 130 may be fixedly connected to the lower end of the main housing 110, and a base 150 may be installed at the bottom of the lower housing 130, which may be used to mount the compressor 10.

[0057] The compressor 10 may further include an exhaust pipe 400 and a liquid reservoir 500. The exhaust pipe 400 may be connected to the upper end of the housing 100. For example, the exhaust pipe 400 is fixedly connected to the upper end of the upper housing 120. The liquid reservoir 500 may be connected to the main housing 110. For example, the liquid reservoir 500 may be connected via a connecting belt, thereby improving the connection stability of the liquid reservoir 500. The liquid reservoir 500 may be connected to the pump body assembly 200 via an air intake pipe 510 to provide refrigerant gas to the pump body assembly 200. It will be understood that the pump body assembly 200 of the embodiment of the present application may include two cylinders, and therefore two air intake pipes 510 are provided, and the two air intake pipes 510 respectively provide refrigerant gas to the corresponding two cylinders.

[0058] As shown in Figure 1, the compressor 10 of the embodiment of the present application can be a two-cylinder compressor 10. The pump body assembly 200 may include an upper bearing 210, an upper cylinder 220, a partition 230, a lower cylinder 240 and a lower bearing 250. The upper bearing 210, the upper cylinder 220, the partition 230, the lower cylinder 240 and the lower bearing 250 are connected in sequence along the up and down direction in the figure. The upper cylinder 220 and the lower cylinder 240 can be fixedly connected to the housing 100 respectively, thereby achieving a stable connection of the pump body assembly 200. It is understandable that the pump body assembly 200 can also be fixedly connected to the housing 100 through components such as the upper bearing 210 and the lower bearing 250.

[0059] The motor 300 includes a stator 310 and a rotor 320. The stator 310 can be fixedly connected to the housing 100. A cavity is formed in the middle of the stator 310, and the rotor 320 is rotatably mounted within the cavity. The pump assembly 200 also includes a crankshaft 260, which is fixedly connected to the rotor 320 and driven for rotation by the motor 300. The crankshaft 260 includes a main shaft portion 261 and two eccentric portions 262 arranged vertically. The main shaft portion 261 is rotatably connected to the upper bearing 210 and the lower bearing 250. The two eccentric portions 262 are rotatably mounted on the upper cylinder 220 and the lower cylinder 240, respectively. As the crankshaft 260 rotates, it compresses the refrigerant gas entering the cylinder from the intake pipe 510, producing work. The compressed, high-temperature, high-pressure refrigerant is then discharged through the exhaust port of the pump assembly 200 into the mounting cavity 140 of the housing 100 and then discharged from the compressor 10 through the exhaust pipe 400.

[0060] In other embodiments, the compressor 10 of the present application can also be a single-cylinder compressor 10. It will be appreciated that the pump assembly 200 includes an upper bearing 210, a cylinder, and a lower bearing 250, which are sequentially connected. The pump assembly 200 also includes a crankshaft 260, wherein a main shaft portion 261 of the crankshaft 260 is rotatably connected to the main bearing and the auxiliary bearing, and an eccentric portion 262 of the crankshaft 260 is rotatably disposed within the cylinder.

[0061] In this embodiment, the pump body assembly 200 is arranged on the lower side of the motor 300 so that the cylinder is installed on the lower side of the motor 300, and the oil stabilizing ring 600 is installed in the installation cavity 140 of the housing 100 and is located between the cylinder and the motor 300. At least part of the outer periphery of the oil stabilizing ring 600 is spaced apart from the inner wall of the housing 100.

[0062] As shown in Figures 1-5, where the dashed line in Figure 5 represents the inner wall of the housing 100, the oil stabilizing ring 600 can be annular and arranged around the outside of the pump assembly 200. By installing the oil stabilizing ring 600 between the cylinder and the motor 300, so that it is located above the cylinder, the oil stabilizing ring 600 covers the upper side of the oil sump, without affecting the lubrication of the pump assembly 200 by the oil sump. It is understood that during operation of the compressor 10, the rapid flow of gas within the compressor 10 drives the lubricating oil upward. The high-speed rotation of the crankshaft 260 and the rotor 320 of the motor 300 throws the lubricating oil onto the upper end surface of the motor 300, causing it to accumulate on the upper side of the motor 300. Furthermore, the oil drawn from the oiling hole of the crankshaft 260 is prone to turbulence, generating eddy currents, which can affect the oiling efficiency of the compressor 10, causing the liquid level at the center of the oil sump to drop, hindering the oiling of the crankshaft 260.

[0063] By arranging an oil stabilizing ring 600 on the upper side of the oil pool, the projection of the oil stabilizing ring 600 in the up and down directions can at least partially block the gap between the pump body assembly 200 and the inner wall of the shell 100, so that the oil stabilizing ring 600 can block the influence of the flow field generated between the motor 300 and the pump body assembly 200 on the oil pool, and the oil stabilizing ring 600 can contact the liquid surface of the oil pool of the compressor 10 in the working state, reduce the probability of generating vortexes, and effectively suppress the fluctuation of the oil pool liquid surface.

[0064] During the operation of the compressor, the lubricating oil driven to the upper side of the oil stabilizing ring generally flows downward along the inner wall of the shell back into the oil pool. In the related technology, the outer periphery of the oil stabilizing ring is completely fitted with the shell, and the oil only flows back through the oil leakage hole set on the oil stabilizing ring. There is a certain distance between the oil leakage hole and the outer periphery of the oil stabilizing ring. The lubricating oil flowing back downward along the inner wall of the shell needs to move radially inward from the outer periphery of the oil stabilizing ring to the oil leakage hole to realize backflow, which increases the backflow path and has a certain impact on the backflow efficiency.

[0065] At least a portion of the outer periphery of the oil stabilizing ring 600 in this embodiment is spaced apart from the inner wall of the shell 100 to form an avoidance gap, so that the lubricating oil flowing back downward along the inner wall of the shell 100 can directly flow back into the oil pool through the avoidance gap, so that the oil stabilizing ring 600 has little effect on the lubricating oil return efficiency while suppressing the fluctuation of the oil pool liquid level, thereby increasing the return speed of the lubricating oil and ensuring the amount of oil in the oil pool.

[0066] It should be noted that, when the compressor 10 is a multi-cylinder compressor 10 , the oil stabilizer ring 600 is arranged to be located between the uppermost cylinder and the motor 300 .

[0067] According to the compressor 10 provided in the embodiment of the present application, by providing an oil stabilizing ring 600, the fluctuation of the oil level in the shell 100 can be suppressed when the compressor 10 is working, and by separating at least a part of the outer periphery of the oil stabilizing ring 600 from the inner wall of the shell 100 to form a gap, the lubricating oil on the inner wall of the shell 100 can smoothly flow back through the gap to the oil pool on the lower side, with high reflux efficiency, improving the stability of the oil amount in the oil pool, and thereby improving the reliability and performance of the compressor 10.

[0068] According to some embodiments of the present application, as shown in FIG. 1 and FIG. 2 , the oil stabilizing ring 600 may be connected to the inner wall of the housing 100 .

[0069] In this embodiment, the oil stabilizing ring 600 may be made of metal to provide a certain structural strength. The outer periphery of the oil stabilizing ring 600 may be welded to the inner wall of the housing 100 to improve the assembly strength of the oil stabilizing ring 600.

[0070] In another embodiment, the oil stabilizing ring 600 may be fixedly connected to the pump body assembly 200 so that the outer periphery of the oil stabilizing ring 600 is completely separated from the inner wall of the housing 100 , further improving the return efficiency.

[0071] According to some embodiments of the present application, as shown in Figures 4 and 5, the outer periphery of the oil stabilizing ring 600 may be provided with a notch 610 that is recessed toward the axis of the oil stabilizing ring 600. The oil stabilizing ring 600 may be spaced apart from the inner wall of the housing 100 at the position of the notch 610 to form an avoidance gap. The outer periphery of the oil stabilizing ring 600 may be connected to the inner wall of the housing 100 at a position where the notch 610 is not provided, so that the oil stabilizing ring 600 can form an avoidance gap for the reflux of lubricating oil while being fixedly connected to the inner wall of the housing 100.

[0072] According to some embodiments of the present application, as shown in Figures 4 and 5, a plurality of notches 610 may be provided, and the plurality of notches 610 may be spaced apart along the circumference of the oil stabilizing ring 600. The provision of the plurality of notches 610 increases the flow area of ​​the avoidance gap formed between the oil stabilizing ring 600 and the inner wall of the housing 100, thereby improving the reflux efficiency. Furthermore, the plurality of notches 610 spaced apart along the circumference of the oil stabilizing ring 600 facilitates the reflux of lubricating oil at various locations along the circumference of the housing 100, thereby improving the overall reflux efficiency. Furthermore, the portion between two adjacent notches 610 may be fixedly connected to the inner wall of the housing 100, thereby making the connection points between the oil stabilizing ring 600 and the inner wall of the housing 100 more evenly distributed and the connection structure more stable.

[0073] According to some embodiments of the present application, as shown in FIG. 4 and FIG. 5 , the spacing between at least two pairs of adjacent notches 610 may be set differently; and / or the shapes of at least two notches 610 may be set differently.

[0074] In this embodiment, the spacing between two adjacent notches 610 is not set to be exactly the same. The spacing between each pair of adjacent notches 610 can be set differently, or the spacing between at least two pairs of adjacent notches 610 among multiple pairs of adjacent notches 610 can be different, so that the positions of each notch 610 are unevenly set in the circumferential position of the oil stabilizing ring 600.

[0075] In this embodiment, the line connecting the two ends of the notch 610 and the axis of the oil stabilizing ring 600 can form an angle, and the angles corresponding to the various notches 610 are not exactly the same, that is, the opening sizes of the various notches 610 are not exactly the same. For example, the angles corresponding to the various notches 610 can be set differently, or there can be at least two notches 610 with different angles.

[0076] In this embodiment, the shapes of the notches 610 may not be completely the same. For example, the shape of each notch 610 may be different, or there may be at least two notches 610 with different shapes.

[0077] In this embodiment, the plurality of notches 610 are arranged unevenly on the oil stabilizing ring 600 to facilitate the return of lubricating oil.

[0078] According to some embodiments of the present application, as shown in Figures 4 and 5 , the shape of the outer periphery of the notch 610 is not specifically limited and can be any of an arc, a straight line, a broken line, and a corrugated shape. This can improve the permeability of oil droplets and reduce the risk of oil seals forming when the lubricating oil passes through the gap between the notch 610 of the oil stabilizer ring 600 and the inner wall of the housing 100, thereby affecting the permeability of the lubricating oil.

[0079] According to some embodiments of the present application, as shown in Figures 4 and 5 , the oil stabilizer ring 600 may be provided with a reflow hole 620 extending vertically therethrough. By providing the reflow hole 620 on the oil stabilizer ring 600, lubricating oil that directly falls onto the upper surface of the oil stabilizer ring 600, or that flows along the connection between the inner wall of the housing 100 and the oil stabilizer ring 600 and reaches the upper surface of the oil stabilizer ring 600, can flow back into the oil pool through the reflow hole 620, thereby improving the reflow efficiency of the lubricating oil.

[0080] According to some embodiments of the present application, as shown in Figures 4 and 5 , the oil stabilizer ring 600 may be provided with multiple return holes 620, which may be distributed along the circumference of the oil stabilizer ring 600. Providing multiple return holes 620 increases the coverage area of ​​the return holes 620, thereby improving the return efficiency of the lubricating oil. Distributing the multiple return holes 620 along the oil stabilizer ring 600 improves the uniformity of the arrangement of the return holes 620, facilitates the return of lubricating oil at various locations, and improves return efficiency.

[0081] According to some embodiments of the present application, as shown in FIG. 4 and FIG. 5 , one of the plurality of reflow holes 620 corresponds to the sliding vane groove 221 of the cylinder in the vertical direction.

[0082] The cylinder is provided with a vane groove 221, and the pump body assembly 200 also includes a vane that can slide within the vane groove 221. By providing a return hole 620 corresponding to the vane groove 221 and located above the vane groove 221, lubricating oil falling through the return hole 620 can directly penetrate into the vane groove 221, lubricating the friction pair between the vane and the vane groove 221, thereby improving the lubrication effect and further enhancing the operational stability of the pump body assembly 200.

[0083] In this embodiment, as shown in Figures 4 and 5, one of the multiple return holes 620 can correspond to the vane groove 221 of the upper cylinder 220 in the up and down directions, and the return hole 620 corresponding to the vane groove 221 of the cylinder can be connected to the inner hole of the oil stabilizer ring 600.

[0084] In another embodiment, the return hole 620 corresponding to the vane groove 221 of the upper cylinder 220 can be spaced apart from the inner ring of the oil stabilizing ring 600, which is not specifically limited.

[0085] According to some embodiments of the present application, as shown in Figures 1 to 4 and 6, the pump body assembly 200 also includes an upper bearing 210, which is installed on the upper surface of the cylinder. The oil stabilizing ring 600 is located on the upper side of the upper bearing 210. The upper bearing 210 is provided with a connecting hole 211, and the connecting hole 211 and the return hole 620 are staggered in the upper and lower directions.

[0086] In this embodiment, the annular shape of upper bearing 210 can also help reduce surface turbulence in the oil pool to a certain extent. In one example, the outer periphery of upper bearing 210 can be fixedly connected to the inner wall of housing 100 to enhance the mounting strength of upper bearing 210. In this example, the outer diameter of upper bearing 210 is the same as the maximum outer diameter of oil stabilizer ring 600. In another example, the outer periphery of upper bearing 210 can be spaced apart from the inner wall of housing 100, and upper bearing 210 can be fixedly connected to the cylinder. In this example, the maximum outer diameter of oil stabilizer ring 600 is set to be no less than the outer diameter of upper bearing 210.

[0087] The connecting hole 211 is provided in the upper bearing 210 to meet the lightweight design of the upper bearing 210, reduce the weight of the upper bearing 210, and facilitate the return of lubricating oil to the oil pool through the connecting hole 211. However, due to the provision of the connecting hole 211, the lubricating oil may overflow upward through the connecting hole 211 during operation of the compressor 10, which is not conducive to the stability of the oil pool surface. By staggering the return hole 620 in the oil stabilizing ring 600 with the connecting hole 211 in the vertical direction, the lubricating oil is prevented from overflowing through the connecting hole 211 to the upper surface of the oil stabilizing ring 600, thereby improving the stability of the oil pool surface.

[0088] The upper bearing 210 may include multiple communicating holes 211, which may be spaced apart along the circumference of the upper bearing 210 to enhance lightweighting while maintaining structural strength. For example, as shown in FIG6 , the communicating holes 211 may be arranged in a strip shape extending axially along the upper bearing 210 to increase the flow area.

[0089] In some embodiments, as shown in Figures 4 and 5 , the spacing between at least two pairs of adjacent return holes 620 is different; and / or at least two return holes 620 are of different sizes. This allows the return holes 620 to be irregularly arranged around the circumference of the oil stabilizer ring 600. Accordingly, the communication holes 211 of the upper bearing 210 are also irregularly arranged. This improves return flow efficiency and reduces the likelihood of vortex formation.

[0090] According to some embodiments of the present application, as shown in Figures 1 to 3, the pump assembly 200 may further include a muffler 270, which may be used to reduce the exhaust noise of the pump assembly 200. The muffler 270 may be installed on the side of the upper bearing 210 facing away from the cylinder, that is, the muffler 270 is provided on the side of the upper bearing 210 close to the motor 300.

[0091] The upper bearing 210 may be provided with an exhaust passage 212, which may be connected to the cylinder. Compressed air generated during the rotation of the crankshaft 260 is discharged through the exhaust passage 212 of the upper bearing 210. A muffler 270 may cover the exhaust passage 212 of the upper bearing 210 so that the exhausted gas enters the muffler 270. The muffler 270 may be provided with an exhaust port to facilitate the discharge of compressed gas generated by the pump body assembly 200.

[0092] In this embodiment, the exhaust hole of the muffler 270 can be provided on the upper surface of the muffler 270 so that the exhausted gas can be exhausted through the exhaust pipe 400 at the upper end of the housing 100. There can be multiple exhaust holes to improve exhaust efficiency.

[0093] The oil stabilizing ring 600 can be positioned around the outside of the muffler 270, with its inner ring spaced apart from the muffler 270. In this embodiment, the oil stabilizing ring 600 is positioned around the outside of the muffler 270, with its upper surface positioned lower than the exhaust port of the muffler 270. This prevents the oil stabilizing ring 600 from interfering with the exhaust flow from the muffler 270 and improves exhaust efficiency. By spacing the oil stabilizing ring 600 from the muffler 270, assembly of the oil stabilizing ring 600 is facilitated and reduced.

[0094] According to some embodiments of the present application, as shown in FIG3 , the thickness of the oil stabilizer ring 600 in the vertical direction is W1, and the thickness of the main portion of the upper bearing 210 in the vertical direction is W2, which can meet the following requirements:

[0095] 3mm≤W1≤W2.

[0096] In this embodiment, the thickness of the oil stabilizing ring 600 is limited so that the oil stabilizing ring 600 has sufficient structural strength while not being too thick to increase production costs and reduce space utilization.

[0097] In this embodiment, the upper bearing 210 plays the role of supporting the crankshaft 260 and maintaining its stable rotation. Therefore, the upper bearing 210 can be used as a reference for the main supporting part in the compressor 10. The thickness of the main part of the upper bearing 210 determines the supporting strength of the upper bearing 210. The thickness of the main part of the upper bearing 210 can be used as the upper limit of the thickness of the oil stabilizer ring 600. It should be noted that the thickness of the main part of the upper bearing 210 is the thickness of the radial outer ring of the upper bearing 210.

[0098] In this embodiment, W2 can be taken as 9mm, and the value range of W1 is [3mm, 9mm]. Specifically, W1 can be taken as 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm or other values ​​between 3mm-9mm, which are not limited here.

[0099] According to some embodiments of the present application, the radial cross-sectional shape of the reflow hole 620 is circular, elliptical, or polygonal. In this embodiment, the radial cross-sectional shape of the reflow hole 620 is not limited and can be circular, elliptical, or polygonal. The polygonal shape can be triangular, rectangular, or other shapes. This reduces the likelihood of vortex formation and improves the efficiency of lubricating oil return. For example, as shown in Figures 4 and 5, the reflow hole 620 can be circular or elongated, extending circumferentially around the oil ring 600.

[0100] According to some embodiments of the present application, the cross-sectional dimensions of the return hole 620 in the radial direction can vary along the axial direction; alternatively, the return hole 620 can be cylindrical. In this embodiment, the cross-sectional shape of the return hole 620 in the axial direction is not limited. In one example, the return hole 620 can be a cylindrical vertical oil hole. In another example, the cross-sectional dimensions of the return hole 620 can vary along the axial direction, such as a tapered oil hole.

[0101] According to some embodiments of the present application, as shown in FIG1 , the height of the housing 100 in the vertical direction is H. It should be noted that the distance between the upper surface of the oil stabilizer ring 600 and the upper surface of the housing 100 is H1, which satisfies:

[0102] 2 / 5≤H1 / H≤7 / 10.

[0103] In this embodiment, H represents the distance between the upper surface of the upper housing 120 and the lower surface of the lower housing 130, and H1 represents the distance between the upper surface of the oil stabilizer ring 600 and the upper surface of the upper housing 120. It is understood that when the compressor 10 is not operating, the lubricating oil in the oil sump is static. However, when the compressor 10 is operating, the lubricating oil in the oil sump is driven by the crankshaft 260 and becomes dynamic, with some of the lubricating oil moving upward, causing the lubricating oil level in the oil sump to drop. To ensure that the oil stabilizer ring 600 effectively suppresses fluctuations in the oil sump surface during the operation of the compressor 10, the relationship between H and H1 is defined so that the height of the oil stabilizer ring 600 within the housing 100 is located below the surface of the static lubricating oil. When the compressor 10 is operating, the oil stabilizer ring 600 is positioned just above the surface of the dynamic lubricating oil, thereby suppressing fluctuations in the oil sump surface.

[0104] In one example, 2 / 5≤H1 / H≤3 / 5 may be satisfied.

[0105] According to some embodiments of the present application, the motor 300 may be spaced apart from the inner sidewall of the housing 100. When the compressor 10 is in operation, driven by the crankshaft 260 and the airflow, some of the lubricating oil in the oil pool may be driven to the upper space of the motor 300. To facilitate rapid reflux of the lubricating oil in the upper space of the motor 300, the motor 300 is spaced apart from the inner sidewall of the housing 100, so that the lubricating oil can reflux downward along the gap between the motor 300 and the inner sidewall of the housing 100, thereby improving reflux efficiency.

[0106] The present application also provides a refrigeration device including a compressor 10 according to any of the above embodiments. The refrigeration device of this embodiment may be a split air conditioner, a central air conditioner, a refrigerator, a freezer, an air-to-water heater, or a floor heating system.

[0107] Since the refrigeration device adopts all the technical solutions of the compressor 10 of the above embodiment, it has at least all the beneficial effects brought by the technical solutions of the above embodiment, which will not be described in detail here.

[0108] According to the refrigeration equipment of the present application, by using the compressor 10 as in any of the above embodiments, the working stability and refrigeration effect of the refrigeration equipment are assisted to be improved.

[0109] An embodiment of the present application also provides an oil stabilizing ring 600, which is applied to the compressor 10. As shown in Figure 5, the outer periphery of the oil stabilizing ring 600 can be provided with a notch 610 that is recessed toward the axis of the oil stabilizing ring 600. The oil stabilizing ring 600 is suitable for being spaced apart from the inner wall of the casing 100 of the compressor 10 at the position of the notch 610, and the outer periphery of the oil stabilizing ring 600 is suitable for being connected to the inner wall of the casing 100 of the compressor 10 at a position where no notch 610 is provided.

[0110] According to the oil stabilizing ring 600 provided in the embodiment of the present application, a notch 610 is set on the outer periphery of the oil stabilizing ring 600 to facilitate the lubricating oil on the inner wall of the shell 100 to flow back downward through the oil stabilizing ring 600, thereby helping to improve the reflux efficiency of the lubricating oil in the compressor 10 and helping to improve the working stability and performance of the compressor 10.

[0111] The oil stabilizing ring 600 may be provided with a plurality of notches 610 , which are spaced apart around the circumference of the oil stabilizing ring 600 , and the spacing between the plurality of notches 610 and the shape and size of each notch 610 may be irregularly arranged.

[0112] The oil stabilizing ring 600 may also be provided with a return hole 620 that penetrates along the thickness direction. There may be multiple return holes 620, and the multiple return holes 620 are spaced apart around the circumference of the oil stabilizing ring 600. The spacing between the multiple return holes 620, the radial cross-sectional shape and cross-sectional size of each return hole 620 may be irregularly arranged.

[0113] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0114] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0115] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0116] In the description of this application, “plurality” means two or more.

[0117] In the description of the present application, a first feature being “on” or “under” a second feature may include the first and second features being in direct contact with each other, or the first and second features being in contact with each other not directly but via another feature therebetween.

[0118] In the description of this application, a first feature “on”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0119] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0120] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A compressor, wherein, include: case; A motor, installed in the housing; A pump assembly, comprising a cylinder, wherein the cylinder is installed in the housing and located at the lower side of the motor; An oil stabilizing ring is installed in the housing and located between the cylinder and the motor. At least a portion of the outer periphery of the oil stabilizing ring is spaced apart from the inner wall of the housing.

2. The compressor according to claim 1, wherein, The oil stabilizing ring is connected to the inner wall of the housing.

3. The compressor according to claim 1 or 2, wherein, The outer periphery of the oil stabilizing ring is provided with a notch recessed toward the axis of the oil stabilizing ring, the oil stabilizing ring is spaced apart from the inner wall of the shell at the position of the notch, and the outer periphery of the oil stabilizing ring is connected to the inner wall of the shell at a position where the notch is not provided.

4. The compressor according to claim 3, wherein, There are a plurality of the notches, and the plurality of the notches are spaced apart from each other along the circumference of the oil stabilizing ring.

5. The compressor according to claim 4, wherein, The spacings between at least two adjacent pairs of the notches are set differently; and / or, At least two of the notches are configured in different shapes.

6. The compressor according to any one of claims 3-5, wherein, The outer peripheral edge of the notch is one of an arc shape, a straight line shape, a broken line shape and a corrugated shape.

7. The compressor according to any one of claims 1-6, wherein, The oil stabilizing ring is provided with a reflux hole penetrating in the up-down direction.

8. The compressor according to claim 7, wherein, The oil stabilizing ring is provided with a plurality of reflow holes, and the plurality of reflow holes are distributed along the circumference of the oil stabilizing ring.

9. The compressor according to claim 8, wherein, One of the plurality of return holes corresponds to the vane groove of the cylinder in the up-down direction.

10. The compressor according to any one of claims 7-9, wherein, The pump assembly also includes: The upper bearing is installed on the upper surface of the cylinder. The oil stabilizing ring is located on the upper side of the upper bearing. The upper bearing is provided with a connecting hole. The connecting hole and the return hole are staggered in the vertical direction.

11. The compressor according to claim 10, wherein, The pump assembly also includes: A muffler is installed on a side of the upper bearing away from the cylinder. The muffler is provided with an exhaust port. The oil stabilizing ring is arranged outside the muffler, and the inner ring of the oil stabilizing ring is spaced apart from the muffler.

12. The compressor according to claim 10 or 11, wherein, The thickness of the main part of the oil stabilizing ring in the vertical direction is W1, and the thickness of the upper bearing in the vertical direction is W2, which satisfies: 3mm≤W1≤W2.

13. The compressor according to any one of claims 7-12, wherein, The cross-sectional shape of the reflow hole in the radial direction is circular, elliptical or polygonal.

14. The compressor according to any one of claims 7-13, wherein, The cross-sectional dimensions of the reflow hole in the radial direction are arranged to vary along the axial direction; or, The reflux hole is arranged in a column shape.

15. The compressor according to any one of claims 1-14, wherein, The height of the housing in the vertical direction is H, and the distance between the upper surface of the oil stabilizing ring and the upper surface of the housing is H1, which satisfies: 2 / 5≤H1 / H≤7 / 10.

16. The compressor according to any one of claims 1-15, wherein, The motor is spaced apart from the inner side wall of the housing.

17. A refrigeration device, wherein, Comprising the compressor according to any one of claims 1-16.

18. An oil stabilizing ring is applied to a compressor, wherein, The outer periphery of the oil stabilizing ring is provided with a notch recessed toward the axis of the oil stabilizing ring, and the oil stabilizing ring is suitable for being spaced apart from the inner wall of the compressor housing at the position of the notch, and the outer periphery of the oil stabilizing ring is suitable for being connected to the inner wall of the compressor housing at a position where the notch is not provided.

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