Compressor and refrigeration apparatus

Abstract

The utility model provides a kind of compressor and refrigeration equipment.The compressor includes shell, stator assembly and pump assembly;Stator assembly is arranged in shell;Pump assembly is arranged in shell, pump assembly and stator assembly are arranged along the axial direction of compressor, pump assembly includes first bearing, the side of first bearing close to stator assembly is provided with first recess, first bearing, shell and stator assembly enclose first cavity, first recess is communicated with first cavity.The first recess increases the volume of the first cavity, so that the resistance encountered in the process of high-temperature and high-pressure refrigerant into the first cavity is smaller, the influence of exhaust resistance on the exhaust process of pump assembly is reduced, the exhaust of pump assembly is smoother, the exhaust efficiency of compressor is improved, and the performance and quality of compressor are improved.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, and more specifically, to a compressor and a refrigeration device. Background Technology

[0002] Currently, in related technologies, rotary compressors include a stator assembly and a pump assembly, both housed within the compressor casing. During discharge, the high-temperature, high-pressure refrigerant first enters the space between the stator and pump assemblies, flows through the stator, and then exits the compressor. However, because the coils of the stator assembly protrude from the stator core towards the pump assembly, they occupy the space between the pump and stator assemblies, increasing the discharge resistance of the pump assembly and reducing the compressor's discharge efficiency. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0004] Therefore, the first aspect of this utility model proposes a compressor.

[0005] The second aspect of this utility model provides a refrigeration device.

[0006] In view of the above, the first aspect of the present invention provides a compressor, including a housing, a stator assembly and a pump assembly; the stator assembly is disposed within the housing; the pump assembly is disposed within the housing, the pump assembly and the stator assembly are arranged along the axial direction of the compressor, the pump assembly includes a first bearing, a first groove is provided on the side of the first bearing near the stator assembly, the first bearing, the housing and the stator assembly surround a first cavity, and the first groove communicates with the first cavity.

[0007] The compressor provided in this application includes a housing and a stator assembly. The stator assembly is disposed within the housing, thereby enabling its installation and fixation. When the stator assembly is energized, it provides power for the compressor to operate. The compressor also includes a pump assembly, which is disposed within the housing. The pump assembly and the stator assembly are arranged axially along the compressor. The power generated when the stator assembly is energized is transmitted to the pump assembly, thereby compressing the refrigerant within the pump assembly.

[0008] The pump assembly includes a first bearing. The first bearing, housing, and stator assembly enclose a first cavity. High-temperature, high-pressure refrigerant compressed by the pump assembly is discharged from the pump assembly. The high-temperature, high-pressure refrigerant enters the first cavity and then moves towards the compressor's exhaust side through the gaps within the stator assembly and the gap between the stator assembly and the housing, thereby enabling the compressor to exhaust gas. A first groove is provided on the side of the first bearing near the stator assembly. The first groove communicates with the first cavity. The first groove increases the volume of the first cavity, reducing the resistance encountered by the high-temperature, high-pressure refrigerant as it enters the first cavity. This reduces the impact of exhaust resistance on the pump assembly's exhaust process, resulting in smoother exhaust, improved compressor exhaust efficiency, and ultimately, enhanced compressor performance and quality.

[0009] The volume of the first cavity is increased by incorporating a first groove in the first bearing. This first groove can be formed in one step during the die-casting of the first bearing, reducing the impact on the overall manufacturing process of the compressor and thus lowering its manufacturing difficulty, simplifying the process, and reducing costs. This method is easier and more efficient to implement, thereby improving the overall cost-effectiveness of the compressor. Furthermore, this method has no impact on the overall mass production process of the compressor, further enhancing its cost-effectiveness.

[0010] The first groove increases the volume of the first cavity while reducing the overall mass of the first bearing, thereby saving the material required for die-casting the first bearing. This reduces the material cost of the first bearing, improves its cost-effectiveness, and facilitates the lightweight design of the compressor.

[0011] Optionally, the first bearing is provided with a second groove, the second groove is located in the middle of the first bearing, the first groove is provided on the outer periphery of the second groove, and the first groove extends from the second groove to the radial edge of the first bearing along the radial direction of the compressor.

[0012] The pump assembly also includes a muffler, at least part of which is disposed within the second recess.

[0013] Optionally, the first bearing is the main bearing of the pump assembly, and the pump assembly also includes a second bearing, which is a secondary bearing located on the side of the pump body away from the main bearing.

[0014] Optionally, in some technical solutions of this utility model, the stator assembly includes a stator core, and a first channel is provided between the stator core and the housing, and the first channel is connected to a first cavity; the first groove is located on the side of the first bearing near the first channel.

[0015] In this technical solution, the stator assembly includes a stator core, and a first channel is formed between the stator core and the housing. The first channel communicates with a first cavity. High-temperature, high-pressure refrigerant compressed by the pump assembly is discharged from the pump assembly, enters the first cavity, and then moves towards the discharge side of the compressor through the first channel, thereby enabling the compressor to discharge. A first groove is located on the side of the first bearing near the first channel. The first groove guides the high-temperature, high-pressure refrigerant discharged from the pump assembly to flow towards the first channel, reducing the impact of discharge resistance on the discharge process of the pump assembly, further improving the smoothness of the high-temperature, high-pressure refrigerant flow, and thus improving the discharge efficiency of the compressor.

[0016] Optionally, a second chamber is provided on the side of the stator assembly away from the pump assembly, and the second chamber is located on the exhaust side of the compressor.

[0017] The stator assembly also includes stator windings, which are wound around the stator teeth of the stator core. There are gaps between the coils of the stator windings, allowing refrigerant to flow through the stator assembly and to the compressor's discharge side. There is also a gap between the stator windings and the stator core, allowing refrigerant to flow through the stator assembly and to the compressor's discharge side as well.

[0018] Optionally, the compressor also includes a rotor assembly, which includes a rotor core. The rotor core is provided with a through hole that extends through the stator core along the compressor axial direction. The refrigerant can also flow through the rotor core through the axial through hole and through the rotor assembly to the discharge side of the compressor.

[0019] Optionally, the stator core is provided with a slit, and the slit of the stator core and the housing form a first channel.

[0020] In some technical solutions of this utility model, optionally, the compressor is projected along the axial direction of the compressor, and the projection of the first channel and the projection of the first groove at least partially overlap.

[0021] In this technical solution, the compressor is projected along its axial direction. The projection of the first channel and the projection of the first groove at least partially overlap, so that the first groove can guide the refrigerant discharged from the pump assembly to the end of the first through hole that connects to the first cavity. This allows the refrigerant discharged from the pump assembly to enter the first channel after passing through the first groove, further reducing the flow resistance of the refrigerant, improving the guiding effect of the first groove on the refrigerant, and improving the exhaust efficiency of the compressor.

[0022] Specifically, projecting the compressor along its axial direction refers to the projection formed on a plane in the radial direction of the compressor when parallel light rays propagating along the compressor's axial direction illuminate various components of the compressor.

[0023] Optionally, the first groove is close to or overlaps with the tangent edge of the stator core in the axial direction of the compressor.

[0024] In some technical solutions of this utility model, optionally, the radial cross-sectional area of ​​the first channel is the first area S, the outer diameter of the first groove is the first diameter Dr, the inner diameter of the first groove is the second diameter Dt, the length of the first groove in the circumferential direction of the compressor is the first length L, and the first area S, the first diameter Dr, the second diameter Dt, the first length L and the number n of the first groove satisfy the following relationship: 0.5≤n×(Dr-Dt)×L / S≤3.

[0025] In this technical solution, the first area S, the first diameter Dr, the second diameter Dt, the first length L, and the number n of the first grooves satisfy 0.5≤n×(Dr-Dt)×L / S≤3. This allows the first grooves to increase the volume of the first cavity by a certain amount, thereby reducing the flow resistance of the refrigerant. It also prevents the volume of the first grooves from being too large and affecting the strength of the first bearing. Furthermore, it ensures that the volume of the first grooves matches the flow area of ​​the first channel, thereby effectively improving the exhaust efficiency of the compressor.

[0026] Specifically, the area of ​​the radial cross-section of the first channel is the flow area of ​​the first channel.

[0027] Specifically, the units of the first area S, the first diameter Dr, the second diameter Dt, and the first length L are all of the same order of magnitude. For example, if the unit of the first area S is square millimeters, then the units of the first diameter Dr, the second diameter Dt, and the first length L are millimeters; if the unit of the first area S is square centimeters, then the units of the first diameter Dr, the second diameter Dt, and the first length L are centimeters.

[0028] Specifically, the first area S, the first diameter Dr, the second diameter Dt, the first length L, and the number of the first grooves n satisfy the following relationship: n×(Dr-Dt)×L / S=0.5.

[0029] The first area S, the first diameter Dr, the second diameter Dt, the first length L, and the number of the first grooves n satisfy the following relationship: n×(Dr-Dt)×L / S=1.5.

[0030] The first area S, the first diameter Dr, the second diameter Dt, the first length L, and the number of the first grooves n satisfy the following relationship: n×(Dr-Dt)×L / S=2.5.

[0031] The first area S, the first diameter Dr, the second diameter Dt, the first length L, and the number of the first grooves n satisfy the following relationship: n×(Dr-Dt)×L / S=3.

[0032] In some technical solutions of this utility model, optionally, the first bearing includes a mounting part, a flange part, and a skirt part; the mounting part is provided with a shaft hole; the flange part is connected to the mounting part; the skirt part is arranged circumferentially along the flange part, and a first groove is provided in the skirt part.

[0033] In this technical solution, the first bearing includes a mounting portion with a shaft hole for the rotor shaft of the rotor assembly to pass through. The first bearing also includes a flange and a skirt. The flange is connected to the mounting portion, and the skirt is arranged circumferentially along the flange, thereby supporting the pump assembly and improving its stability during refrigerant compression. A first groove is provided on the skirt, allowing it to guide the high-temperature, high-pressure refrigerant discharged from the pump assembly to the end of the first channel near the pump assembly, further improving the smoothness of refrigerant flow.

[0034] Optionally, the mounting section is cylindrical, and the flange section is disc-shaped, with the mounting section located at the center of the flange section. The skirt section is annular and extends around the outer edge of the flange section.

[0035] Optionally, an oil groove is provided on the inner peripheral wall of the shaft hole.

[0036] Optionally, in some technical solutions of this utility model, the first groove extends through the skirt along the radial direction of the compressor.

[0037] In this technical solution, the first groove extends through the skirt along the radial direction of the compressor, reducing the obstruction of the skirt to the refrigerant discharged from the pump assembly, further reducing the flow resistance of the refrigerant, and improving the discharge efficiency of the compressor.

[0038] In some technical solutions of this utility model, optionally, the depth of the first groove in the axial direction of the compressor is a first depth T, and the height of the skirt in the axial direction of the compressor is a first height H. The first depth T and the first height H satisfy the following relationship: 0.02≤T / H≤0.2.

[0039] In this technical solution, the ratio of the depth of the first groove in the axial direction of the compressor to the height of the skirt in the axial direction of the compressor is greater than or equal to 0.02 and less than or equal to 0.2, so that the first groove has a certain depth, thereby achieving the guidance of refrigerant. The depth of the first groove will not affect the strength of the first bearing, thereby improving the stability of the first bearing during the operation of the compressor.

[0040] Specifically, the first depth T and the first height H satisfy the following relationship: T / H = 0.02.

[0041] The first depth T and the first height H satisfy the following relationship: T / H = 0.05.

[0042] The first depth T and the first height H satisfy the following relationship: T / H=0.1.

[0043] The first depth T and the first height H satisfy the following relationship: T / H = 0.15.

[0044] The first depth T and the first height H satisfy the following relationship: T / H=0.2.

[0045] In some technical solutions of this utility model, optionally, the flange and / or skirt are provided with multiple oil return holes, the multiple oil return holes are arranged along the circumference of the compressor, and the multiple oil return holes penetrate the flange and / or skirt along the axial direction of the compressor.

[0046] In this technical solution, the flange and / or skirt are provided with multiple oil return holes. These holes penetrate the flange and / or skirt along the compressor's axial direction. Oil discharged from the pump assembly with the high-temperature, high-pressure refrigerant can flow back to the oil sump under gravity through these holes, thereby reducing the probability of oil being discharged from the compressor with the high-temperature, high-pressure refrigerant, decreasing the compressor's oil discharge volume, and further improving the compressor's discharge efficiency. The multiple oil return holes are arranged circumferentially around the compressor, resulting in a more uniform distribution of the oil return holes on the first bearing, reducing the probability of the first bearing's center of gravity shifting, and improving the stability of the first bearing during compressor operation.

[0047] Optionally, the oil return hole can be a round hole or an oblong hole.

[0048] In some technical solutions of this utility model, optionally, the number of first grooves is multiple, and the multiple first grooves are arranged at intervals along the circumference of the compressor.

[0049] In this technical solution, there are multiple first grooves, which are arranged at intervals along the circumference of the compressor. This makes the distribution of the first grooves on the first bearing more uniform, and reduces the impact of the first grooves on the strength of the first bearing while guiding the refrigerant.

[0050] Optionally, the plurality of first grooves are evenly distributed in the circumferential direction of the first bearing, that is, the distance between two adjacent first grooves among the plurality of first grooves is equal.

[0051] Optionally, the number of first grooves is three, with one first groove set at 120-degree intervals.

[0052] There are two first grooves, and the two first grooves are spaced 180 degrees apart.

[0053] There are four first grooves, one of which is set at a 90-degree interval.

[0054] Optionally, the number of first grooves is equal to the number of first channels.

[0055] Optionally, the number of first grooves is one, and the first groove extends from the vent hole to the first channel.

[0056] Optionally, the first groove is an integrally annular groove that extends circumferentially along the compressor.

[0057] In some technical solutions of this utility model, optionally, the volume of the first groove is inversely proportional to the volume of the first cavity.

[0058] In this technical solution, the volume of the first groove is inversely proportional to the volume of the first cavity. That is, the larger the volume of the first cavity, the smaller the volume of the first groove, thereby reducing the influence of the first groove on the strength of the first bearing; the smaller the volume of the first cavity, the larger the volume of the first groove, thereby improving the guiding effect of the first groove on the flow of refrigerant, further reducing the flow resistance of refrigerant, and improving the exhaust efficiency of the compressor.

[0059] Specifically, for different models of compressors, the outer diameter of the compressor, the position of the stator assembly, the position of the pump body assembly, and the distance between the stator assembly and the pump body assembly are different. Therefore, the volume of the first cavity is different for different models of compressors. The larger the volume of the first cavity, the smaller the volume required for the first groove, and vice versa.

[0060] Optionally, in some technical solutions of this utility model, the first bearing is provided with an exhaust hole, and the pump assembly further includes a pump body and an exhaust valve plate; the pump body is provided with a compression chamber, the compression chamber is connected to the first end of the exhaust hole, and the second end of the exhaust hole is connected to the first chamber; one end of the exhaust valve plate is connected to the first bearing, and the other end of the exhaust valve plate is a free end, which is covered on the second end of the exhaust hole.

[0061] In this technical solution, the bearing is provided with an exhaust port, and the pump body is provided with a compression chamber. The first end of the exhaust port is connected to the compression chamber, and the second end of the exhaust port is connected to the first chamber. The refrigerant that has been compressed in the compression chamber is discharged into the first chamber through the exhaust port. One end of the exhaust valve plate is connected to the first bearing, and the other end of the exhaust valve plate is a free end, which is covered on the second end of the exhaust port. When the exhaust pressure in the compression chamber is greater than the elastic force of the exhaust valve plate itself, the exhaust valve plate disengages from the second end of the exhaust port, the exhaust port opens, and the refrigerant in the compression chamber is discharged into the first chamber through the exhaust port. When the exhaust pressure in the compression chamber is less than the exhaust valve plate, the exhaust valve plate blocks the exhaust port, thereby allowing the refrigerant to be compressed in the compression chamber.

[0062] Optionally, the exhaust port can be located on the first bearing, or the exhaust port can be located on both the first bearing and the muffler. The refrigerant compressed in the pump body first enters the muffler's silencer chamber through the exhaust port on the pump body, and then is discharged into the first chamber through the muffler's exhaust port.

[0063] Optionally, the rotor assembly includes a rotor core and a shaft, with the rotor core located inside the stator core and the shaft passing through the rotor core.

[0064] The pump assembly also includes a piston, which is disposed in the compression chamber and connected to the rotating shaft.

[0065] When the stator assembly is energized, the magnetic field generated by the stator assembly drives the rotor assembly to rotate. The rotor assembly drives the piston to move in the compression chamber through the rotating shaft, thereby compressing the refrigerant.

[0066] The second aspect of this utility model provides a refrigeration device, including a compressor as described in any of the above technical solutions, and thus the refrigeration device possesses all the beneficial effects of the compressor as described in any of the above technical solutions.

[0067] Alternatively, refrigeration equipment may include refrigerators, air conditioners, freezers, wine cabinets, or display cases.

[0068] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0069] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0070] Figure 1 This is a schematic diagram of the structure of a compressor according to an embodiment of the present invention;

[0071] Figure 2 This is one of the structural schematic diagrams of a pump assembly according to an embodiment of the present invention;

[0072] Figure 3 This is a schematic diagram of the assembly of the stator assembly and the housing according to an embodiment of the present invention;

[0073] Figure 4 This is a schematic diagram of the structure of a bearing according to an embodiment of the present invention;

[0074] Figure 5 This is a second schematic diagram of the pump assembly according to an embodiment of the present invention.

[0075] Figure label:

[0076] 10 Compressor, 100 Housing, 110 First cavity, 120 First channel, 130 Second cavity, 200 Stator assembly, 210 Stator core, 300 Pump assembly, 310 First bearing, 312 First groove, 314 Mounting part, 3142 Shaft hole, 316 Flange part, 318 Skirt part, 3182 Oil return hole, 319 Exhaust hole, 320 Pump body, 322 Compression chamber, 330 Exhaust valve plate. Detailed Implementation

[0077] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0078] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0079] The following reference Figures 1 to 5 This invention describes a compressor 10 and a refrigeration device according to some embodiments of the present invention.

[0080] In one embodiment of this utility model, such as Figure 1 and Figure 2 As shown, a compressor 10 is provided, including a housing 100, a stator assembly 200, and a pump assembly 300; the stator assembly 200 is disposed within the housing 100; the pump assembly 300 is disposed within the housing 100, and the pump assembly 300 and the stator assembly 200 are arranged along the axial direction of the compressor 10. Figure 1 Arranged in the direction indicated by the middle arrow X), the pump assembly 300 includes a first bearing 310. A first groove 312 is provided on the side of the first bearing 310 near the stator assembly 200. The first bearing 310, the housing 100 and the stator assembly 200 surround a first cavity 110. The first groove 312 communicates with the first cavity 110.

[0081] In this embodiment, the compressor 10 includes a housing 100 and a stator assembly 200. The stator assembly 200 is disposed within the housing 100, thereby enabling the installation and fixation of the stator assembly 200. When the stator assembly 200 is energized, it provides power for the operation of the compressor 10. The compressor 10 also includes a pump assembly 300, which is disposed within the housing 100. The pump assembly 300 and the stator assembly 200 are arranged along the axial direction of the compressor 10. The power generated by energizing the stator assembly 200 is transmitted to the pump assembly 300, thereby compressing the refrigerant within the pump assembly 300.

[0082] The pump assembly 300 includes a first bearing 310. The first bearing 310, housing 100, and stator assembly 200 enclose a first cavity 110. High-temperature, high-pressure refrigerant compressed by the pump assembly 300 is discharged from the pump assembly 300 and enters the first cavity 110. It then moves towards the exhaust side of the compressor 10 through gaps in the stator assembly 200 itself and between the stator assembly 200 and housing 100, thereby enabling the compressor 10 to exhaust gas. A first groove 312 is provided on the side of the first bearing 310 near the stator assembly 200. The first groove 312 communicates with the first cavity 110. The first groove 312 increases the volume of the first cavity 110, reducing the resistance encountered by the high-temperature, high-pressure refrigerant as it enters the first cavity 110. This reduces the impact of exhaust resistance on the exhaust process of the pump assembly 300, making the exhaust of the pump assembly 300 smoother, improving the exhaust efficiency of the compressor 10, and thus improving the performance and quality of the compressor 10.

[0083] The volume of the first cavity 110 is increased by providing a first groove 312 in the first bearing 310. The first groove 312 can be formed in one step during the die-casting of the first bearing 310, reducing the impact on the overall manufacturing process of the compressor 10 caused by providing the first groove 312 on the first bearing 310. This reduces the manufacturing difficulty of the compressor 10, simplifies the manufacturing process, and lowers the manufacturing cost. The solution of increasing the volume of the first cavity 110 by providing a first groove 312 in the first bearing 310 is easier to implement and has higher implementation efficiency, thus improving the overall cost-effectiveness of the compressor 10. Furthermore, the solution of increasing the volume of the first cavity 110 by providing a first groove 312 in the first bearing 310 has no impact on the overall mass production process of the compressor 10, further improving the cost-effectiveness of the solution.

[0084] The first groove 312 increases the volume of the first cavity 110 while reducing the overall weight of the first bearing 310, thereby saving the material required for die-casting the first bearing 310. This reduces the material cost of the first bearing 310, improves its cost-effectiveness, and facilitates the lightweight design of the compressor 10.

[0085] Optionally, the first bearing 310 is provided with a second groove, the second groove being located in the middle of the first bearing 310, and the first groove 312 being provided on the outer periphery of the second groove, the first groove 312 being along the radial direction of the compressor 10. Figure 1 The direction indicated by the middle arrow Y) extends from the second groove to the radial edge of the first bearing 310.

[0086] The pump assembly 300 also includes a muffler, at least a portion of which is disposed within the second recess.

[0087] Optionally, the first bearing 310 is the main bearing of the pump assembly 300, and the pump assembly 300 also includes a second bearing, which is a secondary bearing, and the secondary bearing is located on the side of the pump body 320 away from the main bearing.

[0088] This embodiment provides a compressor 10, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0089] like Figure 1 and Figure 3 As shown, the stator assembly 200 includes a stator core 210, and a first channel 120 is provided between the stator core 210 and the housing 100. The first channel 120 is connected to the first cavity 110. The first groove 312 is located on the side of the first bearing 310 near the first channel 120.

[0090] In this embodiment, the stator assembly 200 includes a stator core 210, and a first channel 120 is provided between the stator core 210 and the housing 100. The first channel 120 communicates with the first cavity 110. The high-temperature and high-pressure refrigerant compressed by the pump assembly 300 is discharged from the pump assembly 300 and enters the first cavity 110. Then, it moves towards the exhaust side of the compressor 10 through the first channel 120, thereby enabling the compressor 10 to exhaust. The first groove 312 is located on the side of the first bearing 310 near the first channel 120. The first groove 312 can guide the high-temperature and high-pressure refrigerant discharged by the pump assembly 300 to flow towards the first channel 120, reducing the impact of exhaust resistance on the exhaust process of the pump assembly 300, further improving the smoothness of the high-temperature and high-pressure refrigerant flow, and thus improving the exhaust efficiency of the compressor 10.

[0091] Optionally, a second cavity 130 is provided on the side of the stator assembly 200 away from the pump assembly 300, and the second cavity 130 is located on the exhaust side of the compressor 10.

[0092] The stator assembly 200 also includes a stator winding wound around the stator teeth of the stator core 210. A certain gap exists between the coils of the stator winding, allowing refrigerant to flow through the stator assembly 200 and to the discharge side of the compressor 10. A certain gap also exists between the stator winding and the stator core 210, allowing refrigerant to flow through the stator assembly 200 and to the discharge side of the compressor 10.

[0093] Optionally, the compressor 10 also includes a rotor assembly, which includes a rotor core. The rotor core is provided with a through hole that extends through the stator core 210 along the axial direction of the compressor 10. The refrigerant can also flow through the axial through hole of the rotor core through the rotor assembly and flow to the exhaust side of the compressor 10.

[0094] Optionally, the stator core 210 is provided with a slit edge, and the slit edge of the stator core 210 and the housing 100 form a first channel 120.

[0095] This embodiment provides a compressor 10, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0096] like Figure 1 and Figure 3 As shown, when the compressor 10 is projected along its axial direction, the projection of the first channel 120 at least partially overlaps with the projection of the first groove 312.

[0097] In this embodiment, the compressor 10 is projected along the axial direction of the compressor 10. The projection of the first channel 120 and the projection of the first groove 312 at least partially overlap, so that the first groove 312 can guide the refrigerant discharged from the pump assembly 300 to the end of the first through hole that communicates with the first cavity 110. This allows the refrigerant discharged from the pump assembly 300 to enter the first channel 120 after passing through the first groove 312, further reducing the flow resistance of the refrigerant, improving the guiding effect of the first groove 312 on the refrigerant, and improving the exhaust efficiency of the compressor 10.

[0098] Specifically, projecting the compressor 10 along its axial direction means that when parallel light rays propagating along the axial direction of the compressor 10 illuminate the various components of the compressor 10, the projection is formed on a plane in the radial direction of the compressor 10.

[0099] Optionally, the first groove 312 is close to or overlaps with the tangent edge of the stator core 210 in the axial direction of the compressor 10.

[0100] This embodiment provides a compressor 10, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0101] like Figure 1 and Figure 2 As shown, the radial cross-sectional area of ​​the first channel 120 is the first area S, the outer diameter of the first groove 312 is the first diameter Dr, the inner diameter of the first groove 312 is the second diameter Dt, and the first groove 312 is located in the circumferential direction of the compressor 10. Figure 2 The length in the direction indicated by the middle arrow A is the first length L. The first area S, the first diameter Dr, the second diameter Dt, the first length L, and the number n of the first groove 312 satisfy the following relationship: 0.5≤n×(Dr-Dt)×L / S≤3.

[0102] In this embodiment, the first area S, the first diameter Dr, the second diameter Dt, the first length L, and the number n of the first groove 312 satisfy 0.5≤n×(Dr-Dt)×L / S≤3, so that the first groove 312 can increase the volume of the first cavity 110 by a certain amount, thereby reducing the flow resistance of the refrigerant. It can also prevent the volume of the first groove 312 from being too large and affecting the strength of the first bearing 310. Furthermore, it can make the volume of the first groove 312 match the flow area of ​​the first channel 120, thereby effectively improving the exhaust efficiency of the compressor 10.

[0103] Specifically, the area of ​​the radial cross section of the first channel 120 is the flow area of ​​the first channel 120.

[0104] Specifically, the units of the first area S, the first diameter Dr, the second diameter Dt, and the first length L are all of the same order of magnitude. For example, if the unit of the first area S is square millimeters, then the units of the first diameter Dr, the second diameter Dt, and the first length L are millimeters; if the unit of the first area S is square centimeters, then the units of the first diameter Dr, the second diameter Dt, and the first length L are centimeters.

[0105] Specifically, the first area S, the first diameter Dr, the second diameter Dt, the first length L, and the number n of the first groove 312 satisfy the following relationship: n×(Dr-Dt)×L / S=0.5.

[0106] The first area S, the first diameter Dr, the second diameter Dt, the first length L, and the number n of the first groove 312 satisfy the following relationship: n×(Dr-Dt)×L / S=1.5.

[0107] The first area S, the first diameter Dr, the second diameter Dt, the first length L, and the number n of the first groove 312 satisfy the following relationship: n×(Dr-Dt)×L / S=2.5.

[0108] The first area S, the first diameter Dr, the second diameter Dt, the first length L, and the number n of the first groove 312 satisfy the following relationship: n×(Dr-Dt)×L / S=3.

[0109] This embodiment provides a compressor 10, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0110] like Figure 1 and Figure 2 As shown, the first bearing 310 includes a mounting portion 314, a flange portion 316, and a skirt portion 318; the mounting portion 314 is provided with a shaft hole 3142; the flange portion 316 is connected to the mounting portion 314; the skirt portion 318 is arranged circumferentially along the flange portion 316, and a first groove 312 is provided in the skirt portion 318.

[0111] In this embodiment, the first bearing 310 includes a mounting portion 314 with a shaft hole 3142 for the rotor shaft of the rotor assembly to pass through. The first bearing 310 also includes a flange portion 316 and a skirt portion 318. The flange portion 316 is connected to the mounting portion 314, and the skirt portion 318 is arranged circumferentially along the flange portion 316. The flange portion 316 and the skirt portion 318 provide support for the pump assembly 300, improving the stability of the pump assembly 300 during refrigerant compression. A first groove 312 is provided on the skirt portion 318, allowing the high-temperature, high-pressure refrigerant discharged from the pump assembly 300 to be guided to the end of the first channel 120 near the pump assembly 300, further improving the smoothness of the refrigerant flow.

[0112] Optionally, the mounting portion 314 is cylindrical, and the flange portion 316 is disc-shaped, with the mounting portion 314 located at the center of the flange portion 316. The skirt portion 318 is annular and extends around the outside of the flange portion 316.

[0113] Optionally, an oil groove is provided on the inner peripheral wall of the shaft hole 3142.

[0114] This embodiment provides a compressor 10, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0115] like Figure 1 and Figure 2 As shown, along the radial direction of the compressor 10, the first groove 312 penetrates the skirt portion 318.

[0116] In this embodiment, along the radial direction of the compressor 10, the first groove 312 penetrates the skirt portion 318, reducing the obstruction of the skirt portion 318 on the refrigerant discharged from the pump assembly 300, further reducing the flow resistance of the refrigerant, and improving the exhaust efficiency of the compressor 10.

[0117] This embodiment provides a compressor 10, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0118] like Figure 1 and Figure 4 As shown, the depth of the first groove 312 in the axial direction of the compressor 10 is the first depth T, and the height of the skirt 318 in the axial direction of the compressor 10 is the first height H. The first depth T and the first height H satisfy the following relationship: 0.02≤T / H≤0.2.

[0119] In this embodiment, the ratio of the depth of the first groove 312 in the axial direction of the compressor 10 to the height of the skirt 318 in the axial direction of the compressor 10 is greater than or equal to 0.02 and less than or equal to 0.2, so that the first groove 312 can have a certain depth, thereby achieving the guidance of refrigerant. The depth of the first groove 312 will not affect the strength of the first bearing 310, thereby improving the stability of the first bearing 310 during the operation of the compressor 10.

[0120] Specifically, the first depth T and the first height H satisfy the following relationship: T / H = 0.02.

[0121] The first depth T and the first height H satisfy the following relationship: T / H = 0.05.

[0122] The first depth T and the first height H satisfy the following relationship: T / H=0.1.

[0123] The first depth T and the first height H satisfy the following relationship: T / H = 0.15.

[0124] The first depth T and the first height H satisfy the following relationship: T / H=0.2.

[0125] This embodiment provides a compressor 10, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0126] like Figure 2 As shown, the flange portion 316 and / or the skirt portion 318 are provided with a plurality of oil return holes 3182. The plurality of oil return holes 3182 are arranged along the circumference of the compressor 10 and the plurality of oil return holes 3182 penetrate the flange portion 316 and / or the skirt portion 318 along the axial direction of the compressor 10.

[0127] In this embodiment, the flange portion 316 and / or the skirt portion 318 are provided with a plurality of oil return holes 3182. The plurality of oil return holes 3182 penetrate the flange portion 316 and / or the skirt portion 318 along the axial direction of the compressor 10. The oil discharged from the pump assembly 300 with the high-temperature and high-pressure refrigerant can flow back to the oil sump under the action of gravity through the oil return holes 3182, thereby reducing the probability of oil being discharged from the compressor 10 with the high-temperature and high-pressure refrigerant, reducing the amount of oil discharged by the compressor 10, and further improving the discharge efficiency of the compressor 10. The plurality of oil return holes 3182 are arranged circumferentially along the compressor 10, making the distribution of the oil return holes 3182 on the first bearing 310 more uniform, reducing the probability of the first bearing 310 having a center of gravity offset, and improving the stability of the first bearing 310 when the compressor 10 is working.

[0128] Optionally, the oil return hole 3182 can be a round hole or an oblong hole.

[0129] This embodiment provides a compressor 10, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0130] like Figure 2 As shown, there are multiple first grooves 312, and the multiple first grooves 312 are arranged at intervals along the circumference of the compressor 10.

[0131] In this embodiment, there are multiple first grooves 312, which are arranged at intervals along the circumference of the compressor 10, so that the distribution of the first grooves 312 on the first bearing 310 is more uniform, and the first grooves 312 can reduce the influence of the first grooves 312 on the strength of the first bearing 310 while realizing the guiding function of the refrigerant.

[0132] Optionally, the plurality of first grooves 312 are evenly distributed in the circumferential direction of the first bearing 310, that is, the distance between two adjacent first grooves 312 is equal.

[0133] Optionally, the number of first grooves 312 is three, with one first groove 312 provided at 120-degree intervals.

[0134] There are two first grooves 312, and the two first grooves 312 are spaced 180 degrees apart.

[0135] There are four first grooves 312, with one first groove 312 set at 90-degree intervals.

[0136] Optionally, the number of first grooves 312 is equal to the number of first channels 120.

[0137] Optionally, there is one first groove 312, which extends from the vent 319 to the first channel 120.

[0138] Optionally, the first groove 312 is an integrally annular groove that extends annularly along the circumference of the compressor 10.

[0139] This embodiment provides a compressor 10, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0140] The volume of the first groove 312 is inversely proportional to the volume of the first cavity 110.

[0141] In this embodiment, the volume of the first groove 312 is inversely proportional to the volume of the first cavity 110. That is, the larger the volume of the first cavity 110, the smaller the volume of the first groove 312, thereby reducing the influence of the first groove 312 on the strength of the first bearing 310; the smaller the volume of the first cavity 110, the larger the volume of the first groove 312, thereby improving the guiding effect of the first groove 312 on the refrigerant flow, further reducing the flow resistance of the refrigerant, and improving the exhaust efficiency of the compressor 10.

[0142] Specifically, for different models of compressor 10, since the outer diameter of compressor 10 is different, the position of stator assembly 200 is different, the position of pump body 320 assembly is different, and the distance between stator assembly 200 and pump body 320 assembly is different, the volume of first cavity 110 is different for different models of compressor 10. The larger the volume of first cavity 110, the smaller the volume required for first groove 312, and the smaller the volume of first cavity 110, the larger the volume required for first groove 312.

[0143] This embodiment provides a compressor 10, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0144] like Figure 2 and Figure 5 As shown, the first bearing 310 is provided with an exhaust port 319, and the pump assembly 300 also includes a pump body 320 and an exhaust manifold 330; the pump body 320 is provided with a compression chamber 322, which is connected to the first end of the exhaust port 319, and the second end of the exhaust port 319 is connected to the first cavity 110; one end of the exhaust manifold 330 is connected to the first bearing 310, and the other end of the exhaust manifold 330 is a free end, which is covered on the second end of the exhaust port 319.

[0145] In this embodiment, the bearing is provided with an exhaust port 319, and the pump body 320 is provided with a compression chamber 322. The first end of the exhaust port 319 is connected to the compression chamber 322, and the second end of the exhaust port 319 is connected to the first cavity 110. The refrigerant that has been compressed in the compression chamber 322 is discharged into the first cavity 110 through the exhaust port 319. One end of the exhaust manifold 330 is connected to the first bearing 310, and the other end of the exhaust manifold 330 is a free end, which is covered on the second end of the exhaust port 319. When the exhaust pressure in the compression chamber 322 is greater than the elastic force of the exhaust manifold 330, the exhaust manifold 330 disengages from the second end of the exhaust port 319, the exhaust port 319 opens, and the refrigerant in the compression chamber 322 is discharged into the first cavity 110 through the exhaust port 319. When the exhaust pressure in the compression chamber 322 is less than the exhaust manifold 330, the exhaust manifold 330 blocks the exhaust port 319, thereby allowing the refrigerant to be compressed in the compression chamber 322.

[0146] Optionally, the exhaust port 319 can be provided on the first bearing 310, or the exhaust port 319 can be provided on both the first bearing 310 and the muffler. The refrigerant compressed in the pump body 320 first enters the muffler's muffler chamber through the exhaust port 319 on the pump body 320, and then is discharged into the first chamber 110 through the muffler's exhaust port 319.

[0147] Optionally, the rotor assembly includes a rotor core and a shaft, with the rotor core located inside the stator core 210 and the shaft passing through the rotor core.

[0148] The pump assembly 300 also includes a piston disposed in the compression chamber 322 and connected to the rotating shaft.

[0149] When the stator assembly 200 is powered on, the magnetic field generated by the stator assembly 200 drives the rotor assembly to rotate. The rotor assembly drives the piston to move in the compression chamber 322 through the rotating shaft, thereby compressing the refrigerant.

[0150] In one embodiment of the present invention, a refrigeration device is provided, including a compressor 10 as described in any of the above embodiments, and thus the refrigeration device has all the beneficial effects of the compressor 10 as described in any of the above embodiments.

[0151] Alternatively, refrigeration equipment may include refrigerators, air conditioners, freezers, wine cabinets, or display cases.

[0152] In the claims, description, and accompanying drawings of this utility model, the term "plural" refers to two or more objects. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description process, and are not intended to indicate or imply that the device or element referred to must have the described specific orientation, or be constructed and operated in a specific orientation. Therefore, these descriptions should not be construed as limitations on this utility model. The terms "connect," "install," "fix," etc., should be interpreted broadly. For example, "connect" can be a fixed connection between multiple objects, a detachable connection between multiple objects, or an integral connection; it can be a direct connection between multiple objects or an indirect connection between multiple objects through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood based on the specific circumstances described above.

[0153] In the claims, description, and drawings of this utility model, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In the claims, description, and drawings of this utility model, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0154] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A compressor, characterized in that, include: case; A stator assembly disposed within the housing; A pump assembly is disposed within the housing. The pump assembly and the stator assembly are arranged along the axial direction of the compressor. The pump assembly includes a first bearing. A first groove is provided on the side of the first bearing near the stator assembly. The first bearing, the housing, and the stator assembly enclose a first cavity. The first groove communicates with the first cavity.

2. The compressor according to claim 1, characterized in that, The stator assembly includes: A stator core, wherein a first channel is provided between the stator core and the housing, and the first channel is in communication with the first cavity; The first groove is located on the side of the first bearing near the first channel.

3. The compressor according to claim 2, characterized in that, The compressor is projected along its axial direction, and the projection of the first channel at least partially overlaps with the projection of the first groove.

4. The compressor according to claim 2, characterized in that, The radial cross-sectional area of ​​the first channel is the first area S, the outer diameter of the first groove is the first diameter Dr, the inner diameter of the first groove is the second diameter Dt, and the length of the first groove in the circumferential direction of the compressor is the first length L. The first area S, the first diameter Dr, the second diameter Dt, the first length L, and the number of the first grooves n satisfy the following relationship: 0.5≤n×(Dr-Dt)×L / S≤3.

5. The compressor according to claim 1, characterized in that, The first bearing includes: The mounting part is provided with a shaft hole; A flange portion, which is connected to the mounting portion; The skirt portion is arranged circumferentially along the flange portion, and the first groove is disposed on the skirt portion.

6. The compressor according to claim 5, characterized in that, The first groove extends through the skirt portion along the radial direction of the compressor.

7. The compressor according to claim 5, characterized in that, The first groove has a first depth T in the axial direction of the compressor, and the skirt has a first height H in the axial direction of the compressor. The first depth T and the first height H satisfy the following relationship: 0.02≤T / H≤0.

2.

8. The compressor according to claim 5, characterized in that, The flange portion and / or the skirt portion are provided with a plurality of oil return holes, the plurality of oil return holes are arranged circumferentially along the compressor, and the plurality of oil return holes penetrate the flange portion and / or the skirt portion along the axial direction of the compressor.

9. The compressor according to claim 1, characterized in that, The number of the first grooves is multiple, and the multiple first grooves are arranged at intervals along the circumference of the compressor.

10. The compressor according to any one of claims 1 to 9, characterized in that, The volume of the first groove is inversely proportional to the volume of the first cavity.

11. The compressor according to any one of claims 1 to 9, characterized in that, The first bearing is provided with a vent hole, and the pump assembly further includes: The pump body is provided with a compression chamber, the compression chamber is connected to a first end of the exhaust port, and the second end of the exhaust port is connected to the first chamber; An exhaust manipulator is provided, one end of which is connected to the first bearing, and the other end of which is a free end, covering the second end of the exhaust hole.

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

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