Compressor and refrigeration apparatus

Abstract

The application discloses a kind of compressor and refrigeration equipment, it is related to compressor technical field, wherein, compressor includes casing, stator core and end plate;Stator core is fixed in casing, stator core is distributed with multiple oil return holes along the circumference, oil return hole is set along the axial direction and penetrates stator core;End plate is arranged in the side of stator core in axial direction;Wherein, at least one of stator core, casing and end plate is provided with multiple interception parts, interception part and oil return hole are at least partially opposite in axial direction, and at least part of oil return hole or part of oil return hole is exposed from interception part.The technical scheme provided by the application aims to control the oil level in the compressor to be at a reasonable height, ensuring the stability of the operation of the compressor.

Description

TECHNICAL FIELD

[0001] The present application relates to the compressor technical field, and particularly relates to a compressor and a refrigeration equipment. BACKGROUND

[0002] In the compressor, the oil liquid level in the compressor is a key index affecting the operation of the compressor. When the oil liquid level is too high, the refrigeration lubricating oil is carried into the condenser, the evaporator and other heat exchangers by the refrigerant, which reduces the heat exchange efficiency of the heat exchanger. When the oil liquid level is too low, the mechanical structure of the compressor is short of oil, which causes the mechanical structure to be worn, and the motor in the compressor is insufficiently cooled, which causes the motor to be overheated and damaged. SUMMARY

[0003] The main purpose of the present application is to provide a compressor and a refrigeration equipment, which aims to control the oil liquid level in the compressor to be at a reasonable height, and to ensure the operation stability of the compressor.

[0004] To achieve the above purpose, the present application provides a compressor, which comprises:

[0005] a shell;

[0006] a stator core fixed in the shell, the stator core being provided with a plurality of oil return holes in the circumferential direction, the oil return holes being arranged through the stator core in the axial direction; and

[0007] an end plate arranged on the side of the stator core in the axial direction;

[0008] At least one of the stator core and the end plate is provided with a plurality of intercepting portions, the intercepting portions and the oil return holes being at least partially opposite in the axial direction, the distance from the top of the intercepting portion to the center of the stator core being L1, the maximum distance from the oil return hole to the center of the stator core being L2, the minimum distance from the oil return hole to the center of the stator core being L3, the number of the oil return holes being n1 in the circumferential direction of the stator core, and the number of the intercepting portions being n2, , ;

[0009] satisfying: , ; or, satisfying: at least part of L1 satisfies: .

[0010] In an embodiment, the intercepting portions are protruded from the outer periphery of the end plate.

[0011] In an embodiment, the compressor further comprises a rotor and a fixed part, the rotor is rotatably arranged in the inner periphery of the stator core, the rotation axis of the rotor is connected to the fixed part, the fixed part is below the rotor, the outer periphery of the stator core and the outer periphery of the fixed part are fixedly connected to the inner periphery of the shell, the fixed part is circumferentially distributed with a plurality of oil passages, the central angles of the plurality of intercepting parts corresponding to the axis of the compressor are θ1, θ2, …, θn respectively, the maximum distance of the oil passages to the axis of the compressor is M1, the minimum distance of the oil passages to the axis of the compressor is M2, the central angles of the plurality of oil passages corresponding to the axis of the compressor are R1, R2, …, Rn respectively, the height of the cylinder of the compressor in the axial direction is H1, the inner diameter of the cylinder is D1, at the position of the minimum distance of the oil passage to the axis of the compressor, the height of the intercepting part protruding radially towards the outer periphery of the stator core is L4, and the following conditions are met:

[0012] .

[0013] In an embodiment, the compressor further comprises a bearing and the cylinder, and the fixed part is configured as the bearing or the cylinder.

[0014] In an embodiment, the oil passage is arc-shaped and extends along the circumferential direction of the compressor.

[0015] To achieve the above-mentioned purpose, the present application further provides a compressor, comprising:

[0016] a shell;

[0017] a stator core fixed in the shell, the stator core is circumferentially distributed with a plurality of oil return holes, the oil return holes are arranged through the stator core in the axial direction; and

[0018] an end plate arranged at the side of the stator core in the axial direction;

[0019] wherein the inner periphery of the shell is circumferentially provided with a plurality of intercepting parts, the intercepting parts and the oil return holes are at least partially opposite in the axial direction, the distance of the top of the intercepting part to the center of the stator core is L5, the maximum distance of the oil return hole to the center of the stator core is L2, the minimum distance of the oil return hole to the center of the stator core is L3, in the circumferential direction of the stator core, the number of the distributed oil return holes is n1, the number of the distributed intercepting parts is n2, , ;

[0020] the following conditions are met: , ; or, the following conditions are met: at least part of L5 satisfies: .

[0021] In an embodiment, the compressor further comprises a rotor and a fixed part, the rotor is rotatably arranged in the inner periphery of the stator core, the rotation shaft of the rotor is connected to the fixed part, the fixed part is configured as a bearing or a cylinder of the rotor, the outer periphery of the stator core and the outer periphery of the fixed part are fixedly connected to the inner periphery of the shell, the fixed part is circumferentially distributed with a plurality of oil passages, the central angles of a plurality of the intercepting parts corresponding to the axis of the compressor are θ1, θ2, ···, θn respectively, the maximum distance of the oil passage to the axis of the compressor is M1, the minimum distance of the oil passage to the axis of the compressor is M2, the central angles of a plurality of the oil passages corresponding to the axis of the compressor are R1, R2, ···, Rn respectively, the height of the cylinder of the compressor in the axial direction is H1, the inner diameter of the cylinder is D1, at the position of the minimum distance of the oil passage to the axis of the compressor, the height of the intercepting part protruding radially towards the outer periphery of the stator core is L4, and the following conditions are satisfied:

[0022] .

[0023] In an embodiment, in the circumferential direction of the stator core, the intercepting part covers the corresponding oil passage.

[0024] In an embodiment, the inner periphery of the stator core is circumferentially spaced with a plurality of stator teeth, in the circumferential direction of the stator core, the number of the stator teeth is n3, and the following conditions are satisfied: wherein, , .

[0025] In an embodiment, the oil passage is recessed from the outer periphery of the stator core.

[0026] In an embodiment, the compressor further comprises a winding, the end plate is fixed to the side of the stator core in the axial direction, the end plate is adapted to the stator teeth of the stator core, the winding is wound around the stator teeth and between the opposite sides of the two end plates in the axial direction.

[0027] In an embodiment, the material of the end plate is configured as an insulating material.

[0028] The application further provides a refrigeration device comprising the compressor as described above.

[0029] The technical solution of this invention provides an interception part for at least one of the multiple return holes circumferentially distributed in the stator core. The interception part can be formed in one or more of the end plate, stator core, and housing. Under the influence of the interception part, the area of ​​the return oil hole for the flow of refrigerant lubricating oil is controlled, thereby regulating the return path of the lubricating oil during compressor operation. When the compressor is running normally, the refrigerant lubricating oil circulates with the refrigerant to the cavity formed at the upper end of the housing and stator core, and flows downwards through the return oil hole to the oil sump below the housing for cooling the stator core and lubricating moving parts. During this process, because the interception part reduces the flow area of ​​the return oil hole, it slows down the return speed of the oil, balancing it with the upward speed of the oil, allowing the refrigerant lubricating oil to circulate at a predetermined flow rate. In this way, on the one hand, the rapid return of the refrigerant lubricating oil is restricted, keeping the oil level in the compressor within a reasonable height range, allowing the refrigerant lubricating oil to maintain a suitable flow rate. On the other hand, the interception section still ensures that the return hole has a sufficient flow channel for the refrigerant lubricating oil to flow. The refrigerant lubricating oil continuously passing through the return hole can return to the oil sump below the casing at a predetermined rate, preventing a large amount of refrigerant lubricating oil from being carried out of the compressor, while also maintaining the stability of the refrigerant lubricating oil circulation. This, in turn, ensures the stability of the oil film on the surface of the moving parts inside the compressor, which is reflected in the fact that the oil level inside the compressor is always at a reasonable height, so as to ensure the balance and stability of the lubrication and cooling functions inside the compressor, thereby ensuring the operational stability of the compressor. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of an embodiment of the compressor provided by the present invention;

[0032] Figure 2 for Figure 1 Schematic diagram of the stator core, end plates and windings;

[0033] Figure 3 for Figure 1 A graph showing the relationship between the oil discharge rate of the compressor and the length of L1.

[0034] Figure 4 for Figure 1 Schematic diagram of the middle plate;

[0035] Figure 5 for Figure 1 Schematic diagram of the middle stator core;

[0036] Figure 6 Fig. 1 is a structural schematic diagram of a compressor provided by the present application; Figure 1 Fig. 2 is a structural schematic diagram of a middle bearing provided by the present application;

[0037] Figure 7 Fig. 3 is a structural schematic diagram of a cylinder in an embodiment of the compressor provided by the present application;

[0038] Figure 8 Fig. 4 is a relationship diagram of oil discharge amount and L1 length in another embodiment of the compressor provided by the present application;

[0039] Figure 9 Fig. 5 is a relationship diagram of oil discharge amount and L5 length in still another embodiment of the compressor provided by the present application;

[0040] Figure 10 Fig. 6 is a relationship diagram of oil discharge amount and L5 length in yet another embodiment of the compressor provided by the present application;

[0041] Figure 11 Fig. 7 is an area relationship diagram of an oil passage hole and an oil return hole provided by the present application.

[0042] Brief Description of the Drawings

[0043] 100, housing; 200, stator core; 210, oil return hole; 220, stator tooth; 300, end plate; 310, intercepting part; 400, winding; 501, bearing; 502, cylinder; 510, oil passage hole; 600, rotor.

[0044] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0046] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0047] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application.

[0048] The present application provides a compressor.

[0049] Please refer to Figure 1 , Figure 3 , Figures 8 to 10 In an embodiment of the present application, the compressor comprises a casing 100, a stator core 200 and an end plate 300; the stator core 200 is fixed in the casing 100, the stator core 200 is circumferentially distributed with a plurality of oil return holes 210, the oil return holes 210 are arranged through the stator core 200 along the axial direction; the end plate 300 is arranged at the side of the stator core 200 in the axial direction; wherein at least one of the stator core 200, the casing 100 and the end plate 300 is provided with a plurality of intercepting portions 310, the intercepting portions 310 and the oil return holes 210 are at least partially opposite in the axial direction, when all the oil return holes 210 are provided with the intercepting portions 310, at least part of the oil return holes 210 is exposed from the intercepting portions 310, when part of the oil return holes 210 can not be provided with the intercepting portions 310, the oil return holes 210 provided with the intercepting portions 310 can be completely intercepted by the intercepting portions 310, or can be partially intercepted.

[0050] The technical solution of the present application corresponds to at least one of the plurality of backflow holes distributed circumferentially on the stator core 200, and the intercepting part 310 can be formed on one or more of the end plate 300, the stator core 200 and the casing 100, so as to control the area of the oil return hole 210 under the influence of the intercepting part 310. In turn, during the operation of the compressor, the regulation of the backflow path of the lubricating oil is formed. When the compressor is normally operated, the refrigeration lubricating oil flows with the refrigerant to the cavity formed at the upper end of the casing 100 and the stator core 200, and flows downward through the oil return hole 210 to the oil pool below the casing 100, which is used to cool the stator core 200 and lubricate the moving parts. During this process, the intercepting part 310 reduces the flow area of the oil return hole 210, slows down the backflow speed of the oil, balances the rising speed of the oil, and makes the refrigeration lubricating oil circulate at a predetermined flow rate. In this way, on the one hand, the rapid backflow of the refrigeration lubricating oil is limited, the oil level of the compressor is maintained within a reasonable height range, and the refrigeration lubricating oil can maintain a suitable flow rate of circulation; on the other hand, the intercepting part 310 still ensures that the backflow hole has a sufficient flow passage for the refrigeration lubricating oil to flow, and the refrigeration lubricating oil that continuously passes through the oil return hole 210 can flow back to the oil pool below the casing 100 at a predetermined rate, preventing the refrigeration lubricating oil from being taken out of the compressor in large quantities, while also maintaining the stability of the circulation of the refrigeration lubricating oil, thereby ensuring the stability of the oil film on the surface of the moving parts in the compressor, which is reflected in that the oil level in the compressor is always at a reasonable height, so as to balance and stabilize the lubrication and cooling functions in the compressor, thereby ensuring the stability of the operation of the compressor.

[0051] It should be noted that the compressor of the embodiment is configured as a vertical compressor, the upper part of the casing 100 and the upper side of the stator core 200 form an upper cavity, the inner periphery of the stator core 200 is provided with a rotor 600, the stator core 200 is wound with a winding 400 to form a motor, the lower part of the stator core 200 is provided with a bearing 501, a cylinder 502 and other components, and an oil pool is formed in the lower part of the casing 100, and the rotor 600 is supported by the bearing 501 or the cylinder 502. Among them, the refrigerant cycle enters the compressor from the position of the cylinder 502, after working through the cylinder 502, it flows to the upper cavity in the casing 100 through the gap and the through hole in the rotor 600 and the stator core 200, and then leaves the compressor from the upper cavity of the casing 100 and enters the refrigerant cycle. The refrigeration lubricating oil forms an oil circulation between the rotor core and the stator core 200, and flows from bottom to top between the rotor core and the stator core 200, and flows from top to bottom between the stator core 200 and the casing 100. In the related art, an oil baffle is arranged on the upper part of the rotor 600 to suppress the upward flow of the refrigeration lubricating oil, but this way increases the complexity of the structure, the development cycle is long, and the cost is high; the present scheme sets the intercepting part 310, which acts on the flow size of the refrigeration lubricating oil circulation, guarantees the stability of the circulation flow of the refrigeration lubricating oil, and then maintains the oil level of the compressor at a reasonable height, so as to avoid the refrigeration lubricating oil being brought into the heat exchanger, and also can suppress the problem of wear of the moving parts in the compressor due to lack of oil.

[0052] In an embodiment, referring to Figure 1 and Figures 3 to 5 , at least one of the stator core 200 and the end plate 300 is provided with a plurality of intercepting parts 310, the distance from the top of the intercepting part 310 to the center of the stator core 200 is L1, the maximum distance from the oil return hole 210 to the center of the stator core 200 is L2, the minimum distance from the oil return hole 210 to the center of the stator core 200 is L3, the number of distributed oil return holes 210 in the circumferential direction of the stator core is n1, the number of distributed intercepting parts 310 in the circumferential direction of the stator core is n2, , , meet: , It can be understood that the oil return hole 210 occupies a certain size in the radial direction of the stator core 200, for any oil return hole 210, the distance between the position closest to the center of the stator core 200 and the center is L2, and the distance between the position farthest from the center of the stator core 200 and the center is L3, and correspondingly, the distance between the position farthest from the center of the stator core 200 and the center of the intercepting portion 310 is L1. Wherein, the oil return hole 210 can be a through hole, and is independently formed at a position close to the outer periphery of the stator core 200, the oil return hole 210 can also be a through slot, located at the outer periphery of the stator core 200, and formed with the shell 100. In addition, the number n2 of the intercepting portion 310 is understood as: in the axial projection plane of the stator core 200, the number of the intercepting portion 310 in the circumferential direction of the stator core 200 can be equal to the number of the intercepting portion 310, such as one intercepting portion 310 is arranged at any circumferential position of the stator core 200, or less than the number of the intercepting portion 310, such as two intercepting portions 310 are arranged in at least one circumferential position of the stator core 200 in the axial direction. The intercepting portion 310 of the embodiment can be arranged on the stator core 200 or the end plate 300, so that the intercepting portion 310 is at least partially opposite to the corresponding oil return hole 210 in the axial direction of the stator core 200.

[0053] As shown in Figure 3 , the oil discharge amount of the compressor reflects the oil level height of the compressor, and controlling the oil discharge amount of the compressor to be in the ideal oil discharge amount indicates that the oil level height of the compressor is at a reasonable level. In the circumferential direction of the stator core 200, the number of the oil return hole 210 is greater than the number of the intercepting portion 310, and at least one oil return hole 210 is not intercepted by the intercepting portion 310. Based on this scenario, for the length of L1, L1 is limited to be between 1.05 times L3 and L2, which means that L2 is at least 1.05 times L3, and the intercepting portion 310 can partially intercept the corresponding oil return hole 210 or completely intercept the corresponding oil return hole 210. At this time, the oil discharge amount of the compressor can be maintained in the ideal oil discharge amount, thereby ensuring that the oil level height of the compressor is at a reasonable position. It should be noted that for the formula , L1, L2 and L3 are parameters of the intercepting portion 310 and the oil return hole 210 provided with the intercepting portion 310, and the same limitation applies to other intercepting portions 310 and the oil return holes 210 provided with the intercepting portions 310. Wherein, the value of L1 can be 1.05L3, 1.1L3, 0.97L2 or L2.

[0054] In another embodiment, please refer to Figure 1 and Figure 8 ​At least one of the stator core 200 and the end plate 300 is provided with a plurality of intercepting parts 310. The distance from the top of the intercepting part 310 to the center of the stator core 200 is L1. The maximum distance from the oil return hole 210 to the center of the stator core 200 is L2. The minimum distance from the oil return hole 210 to the center of the stator core 200 is L3. The number of oil return holes 210 distributed in the circumference of the stator core is n1, and the number of intercepting parts 310 distributed is n2. , ,satisfy: At least some L1 values ​​satisfy: The shapes of L1, L2, L3, n2, and the return oil hole 210, as well as the location of the interceptor 310, are detailed in the section on... Figure 3 The description of the embodiments will not be repeated here. It can be understood that, as Figure 8 As shown, the compressor's oil discharge rate reflects the compressor's oil level. Controlling the compressor's oil discharge rate to the ideal level indicates that the compressor's oil level is at a reasonable level. In the circumferential direction of the stator core 200, the number of oil return holes 210 equals the number of intercepting parts 310, meaning that each oil return hole 210 is intercepted by at least one intercepting part 310. Based on this scenario, for the length of L1, at least a portion of L is limited to be greater than or equal to 1.05 times L3 and less than L2. This means that at least a portion of the intercepting parts 310 can partially intercept the corresponding oil return hole 210, but cannot completely intercept it. In this case, the compressor's oil discharge rate can be maintained within the ideal range, thus ensuring that the compressor's oil level is at a reasonable position. It should be noted that "at least a portion of L1" is understood as at least one L1 or multiple L1s, which can be the number of L1s where n2 equals n1, but not when n2 = n1, where no L1 satisfies the formula. The return oil hole 210 is not completely blocked by the interceptor 310. For the formula... In this context, L1, L2, and L3 are parameters for the interception unit 310 and the oil return hole 210 on which the interception unit 310 is installed. These parameters also apply to other interception units 310 and the oil return holes 210 on which they are installed. The constraints apply. The value of L1 can be 1.05L3, 1.1L3, 0.97L2, or 0.99L2. Alternatively, n2 = n1, and some values ​​of L1 satisfy: Some L1 sequences satisfy: .

[0055] Regarding the location of the interceptor 310, in one embodiment, please refer to... Figure 2 and Figure 4The intercepting portion 310 is protruded from the outer periphery of the end plate 300. It is to be noted that the outer diameter of the end plate 300 is smaller than the outer diameter of the stator core 200, the intercepting portion 310 is protruded from the outer periphery of the end plate 300, extends outwardly along the radial direction of the end plate 300 and is located at the axial end surface of the stator core 200, so that the intercepting portion 310 is at least partially opposite to the oil return hole 210 on the stator core 200 in the axial direction. The axial end surface of the stator core 200 is provided with an end portion, the end plate 300 at one axial end surface of the stator core 200 is provided with the intercepting portion 310, or both end plates 300 are provided with the intercepting portion 310. In the embodiment, the end plate 300 at the upper side of the stator core 200 is provided with the intercepting portion 310, the intercepting portion 310 hinders the chilled lubricating oil from entering the oil return hole 210, which is equivalent to setting a throttling barrier on the oil return path, thereby slowing down the return speed and flow of the oil, matching the speed and flow of the chilled lubricating oil flowing upward with the refrigerant, thereby inhibiting the rapid rise of the oil level and avoiding the rapid drop of the oil level, so as to stably control the oil level height in a reasonable range and avoid excessive chilled oil entering the refrigeration cycle system. The end plate 300 is a standard component, which can be integrally formed with the intercepting portion 310 by stamping or casting process, without the need to additionally increase parts or change the structure of the stator core 200, thereby reducing the manufacturing cost and assembly complexity. Of course, in other embodiments, the intercepting portion 310 can also be provided on the stator core 200.

[0056] In an embodiment, referring to Figure 6 , Figure 7 and Figure 11 , the compressor further comprises a rotor 600 and a fixing member, the rotor 600 is rotatably arranged at the inner periphery of the stator core 200, the rotation shaft of the rotor 600 is connected to the fixing member, the fixing member is located below the rotor 600, the outer periphery of the stator core 200 and the outer periphery of the fixing member are fixedly connected to the inner periphery of the shell 100, the fixing member is circumferentially provided with a plurality of oil through holes 510, the central angles of the plurality of intercepting portions 310 corresponding to the axis of the compressor are θ1, θ2, ···, θn respectively, the maximum distance from the oil through hole 510 to the axis of the compressor is M1, the minimum distance from the oil through hole 510 to the axis of the compressor is M2, the central angles of the plurality of oil through holes 510 corresponding to the axis of the compressor are R1, R2, ···, Rn respectively, the height of the cylinder 502 of the compressor in the axial direction is H1, the inner diameter of the cylinder 502 is D1, at the position of the minimum distance from the oil return hole 210 to the axis of the compressor, the intercepting portion 310 protrudes outwardly along the radial direction of the stator core 200 by a height L4, and the following conditions are met:

[0057] .

[0058] It can be understood that the stator core 200 and the shell 100 are fixedly connected, the stator core 200 can be kept stable in the shell 100, the fixing member is fixedly connected with the shell 100, and the rotor 600 is connected to the fixing member below through the rotating shaft, so that the rotor 600 can also be kept stable in the shell 100. The oil passage 510 is arranged on the periphery of the fixing member, and the refrigerated lubricating oil in the oil pool below flows upward from the shaft center of the compressor to the space between the fixing member and the stator core 200, and is divided into two cycles here, one continues to flow toward the rotor 600 to form a cooling cycle around the rotor 600 and the stator, and the other returns to the oil passage 510 to form a lubricating cycle around the movable parts such as the cylinder 502 and the bearing 501. Among them, the oil passage 510 is below the oil return hole 210, and the embodiment limits the relationship between the total area of the plurality of intercepting portions 310 and the total area of the plurality of oil passages 510 to balance the stability of the above two cycles, thereby ensuring that the oil level in the compressor is in the ideal interval, and also ensuring that the energy efficiency of the compressor is in a higher interval. Of course, in other embodiments, a boss can also be arranged at the oil passage 510, and the total area of the above-mentioned intercepting portion 310 is required to be adapted to the formula.

[0059] It should be noted that, The total area of the plurality of intercepting portions 310 is represented by the product of the arc length and the radial width of a single intercepting portion 310 which is similar to a rectangle, and then the sum of the areas of the plurality of intercepting portions 310 is calculated to form the total area of the intercepting portion 310, wherein the ratio of θ1, θ2, …, θn to π has been divided in the above formula. Therefore, The total area of the plurality of oil passages 510 is represented by one sixth, wherein the ratio of R1, R2, …, Rn to π has been divided in the above formula. Therefore, The total area of the plurality of oil passages 510 is represented by one sixth, wherein the ratio of R1, R2, …, Rn to π has been divided in the above formula. Therefore, The total area of the plurality of oil passages 510 is represented by one sixth, wherein the ratio of R1, R2, …, Rn to π has been divided in the above formula. Therefore, Figure 11 The relationship between the total area of the plurality of intercepting portions 310 and the total area of the plurality of oil passages 510 is reacted, and the total area of the plurality of intercepting portions 310 is limited to be between one sixth of the total area of the plurality of oil passages 510 and The total area of the plurality of oil passages 510 is represented by one sixth, wherein the ratio of R1, R2, …, Rn to π has been divided in the above formula. Therefore, The limiting coefficient of the maximum proportion of the total area of the plurality of interception portions 310 to the total area of the plurality of oil through holes 510 reflects the fact that the cylinder 502 is the main working component of the compressor, and the height-diameter ratio of the cylinder 502 has a great relationship with the output force of the cylinder 502, the movement frequency of the piston in the cylinder 502, the refrigerant consumption, and the energy efficiency of the compressor. By introducing the limiting coefficient, the height interval of the ideal oil level can be guaranteed, and a higher energy efficiency of the compressor can be obtained. In addition, the central angles of the plurality of interception portions 310 corresponding to the center of the shaft of the compressor are θ1, θ2,..., θn, respectively, and the number of interception portions 310 on the projection plane of the stator core 200 along the axial direction is n. At the position of the minimum distance from the oil return hole 210 to the center of the stator core 200, the height L4=L1-L3 of the interception portion 310 protruding radially towards the outer periphery of the stator core 200.

[0060] In an embodiment, referring to Figure 6 and Figure 7 , the compressor further comprises a bearing 501 and a cylinder 502, and the fixing member is configured as the bearing 501 or the cylinder 502. It can be seen that the component supporting the rotor 600 is configured as the bearing 501 or the cylinder 502, avoiding the need to independently add a component for supporting the rotor 600, thereby simplifying the structure inside the compressor. At the same time, the structural strength of the bearing 501 and the cylinder 502 can maintain the stability of the rotor 600 in the casing 100. In this embodiment, referring to Figure 6 and Figure 7 , the oil through hole 510 extends in an arc shape along the circumference of the compressor. It can be a complete arc-shaped through hole, or the edge extending in part of the circumference can be bent, but the overall shape is in an arc shape extending along the circumference. Corresponding to , the total area of the plurality of oil through holes 510 can be better realized, and at the same time, it is beneficial to adapt to the inner periphery shape of the casing 100, facilitating the flow of refrigeration lubricating oil through the oil through hole 510 to the oil pool below. Of course, in other embodiments, components below the stator core 200 other than the bearing 501 and the cylinder 502 can be configured as the fixing member, or new components can be added to form the above-mentioned fixing member; or the oil through hole 510 can be located at the outer periphery of the fixing member and be enclosed with the casing 100.

[0061] In yet another embodiment, referring to Figure 1 and Figure 9 , the inner periphery of the casing 100 is provided with a plurality of interception portions 310 along the circumference, the distance from the top of the interception portion 310 to the center of the stator core 200 is L5, the maximum distance from the oil return hole 210 to the center of the stator core 200 is L2, the minimum distance from the oil return hole 210 to the center of the stator core 200 is L3, the number of distributed oil return holes 210 in the circumferential direction of the stator core 200 is n1, and the number of distributed interception portions 310 in the circumferential direction of the stator core 200 is n2, , , it is satisfied that , The shapes of L2, L3, n2, and the return oil hole 210, as well as the location of the interceptor 310, are described in reference to the section on... Figure 3 The description of the embodiment will not be repeated here, and the value of L5 is: the distance from the top of the intercepting part 310 protruding from the inner circumference of the housing 100 to the center of the stator core 200. It can be understood that the oil discharge volume of the compressor reflects the oil level of the compressor. Controlling the oil discharge volume of the compressor to the ideal oil discharge volume means that the oil level of the compressor is at a reasonable level. In the circumferential direction of the stator core 200, the number of oil return holes 210 is greater than the number of intercepting parts 310, ensuring that at least one oil return hole 210 is not intercepted by the intercepting part 310. Based on this scenario, the length of L5 is limited to between L3 and 0.97L2, meaning that 0.97 times L2 is at least greater than L3. The outer side of the oil return hole 210 of the intercepting part 310, i.e., one side of the housing 100, can partially or completely intercept the corresponding oil return hole 210. In this case, the oil discharge of the compressor can be maintained within the ideal range, thereby ensuring that the oil level of the compressor is at a reasonable position. It should be noted that for the formula... In this context, L5, L2, and L3 are parameters for the interception unit 310 and the oil return hole 210 on which the interception unit 310 is installed. These parameters also apply to other interception units 310 and the oil return holes 210 on which they are installed. The limitation is that L5 can take the values ​​of L3, 1.05L3, 0.95L2, or 0.97L2.

[0062] In yet another embodiment, please refer to Figure 1 and Figure 10 The inner circumference of the housing 100 is provided with multiple intercepting parts 310. The distance from the top of the intercepting part 310 to the center of the stator core 200 is L5. The maximum distance from the oil return hole 210 to the center of the stator core 200 is L2, and the minimum distance from the oil return hole 210 to the center of the stator core 200 is L3. The number of oil return holes 210 distributed in the circumference of the stator core 200 is n1, and the number of intercepting parts 310 distributed is n2. , ,satisfy: At least some L5s satisfy: The shapes of L2, L3, n2, and the return oil hole 210, as well as the location of the interceptor 310, are described in reference to the section on... Figure 3 The description of the embodiments, with respect to L5, refers to the description of... Figure 8 The embodiments described herein will not be repeated here.

[0063] It can be understood that, for example Figure 10As shown, the oil discharge amount of the compressor reflects the oil level of the compressor, and controlling the oil discharge amount of the compressor to be at the ideal oil discharge amount indicates that the oil level of the compressor is at a reasonable level. In the circumferential direction of the stator core 200, the number of oil return holes 210 is equal to the number of intercepting portions 310, and one oil return hole 210 is intercepted by at least one intercepting portion 310. Based on this scenario, for the length L5, at least part L is limited to be greater than L3 and less than or equal to 0.97 times L2, indicating that at least part of the intercepting portion 310 can partially intercept the corresponding oil return hole 210, but cannot completely intercept the corresponding oil return hole 210. At this time, the oil discharge amount of the compressor can be maintained between the ideal oil discharge amount, thereby ensuring that the oil level of the compressor is at a reasonable position. It should be noted that at least part L5 is understood as at least one L5 or multiple L5, which can be n2 equal to n1 number of L5, but cannot be n2=n1 without L5 satisfying the formula , indicating that the oil return hole 210 is not completely blocked by the intercepting portion 310. For the formula , L5, L2, and L3 are parameters of the intercepting portion 310 and the oil return hole 210 provided with the intercepting portion 310, and the same applies to other intercepting portions 310 and the oil return holes 210 provided with the intercepting portions 310. . Among them, the value of L5 can be 1.05L3, 1.1L3, 0.95L2, or 0.97L2. Of course, n2=n1 can also be part of L1 satisfying: , and part of L1 satisfying: .

[0064] In an embodiment, based on the structure that the intercepting portion 310 is arranged on the casing 100, please refer to Figure 6 , Figure 7 , and Figure 11 , the compressor further comprises a rotor 600 and a fixed part, the rotor 600 is rotatably arranged in the inner circumference of the stator core 200, the rotating shaft of the rotor 600 is connected to the fixed part, the fixed part is arranged at the bearing 501 or the cylinder 502 of the rotor 600, the outer circumference of the stator core 200 and the outer circumference of the fixed part are fixedly connected to the inner circumference of the casing 100, the fixed part is circumferentially distributed with a plurality of oil passages 510, the central angles of the plurality of intercepting portions 310 corresponding to the axis of the compressor are θ1, θ2, …, θn respectively, the maximum distance from the oil passage 510 to the axis of the compressor is M1, the minimum distance from the oil passage 510 to the axis of the compressor is M2, the central angles of the plurality of oil passages 510 corresponding to the axis of the compressor are R1, R2, …, Rn respectively, the height of the cylinder 502 of the compressor in the axial direction is H1, the inner diameter of the cylinder 502 is D1, at the position of the minimum distance from the oil return hole 210 to the axis of the compressor, the intercepting portion 310 protrudes radially towards the outer circumference of the stator core 200 by a height L4, and satisfies:

[0065] .

[0066] In this embodiment, most of the description about the total area of the interception portion 310 and the total area of the oil passage hole 510 is consistent with the above description, and the difference is that: The total area of the plurality of interception portions 310 in this embodiment is calculated in the same way as a single interception portion 310, that is, the product of the arc length and the radial width, and then the sum of the areas of the plurality of interception portions 310 is calculated to form the total area of the interception portion 310, wherein the ratio of θ1, θ2, ···, θn to π has been divided in the above formula; and the height L4=L2-L5 of the interception portion 310 protruding along the radial direction to the outer periphery of the stator core 200 at the position of the minimum distance of the oil return hole 210 to the shaft center of the compressor. Other than the above, the description about the total area of the interception portion 310 and the total area of the oil passage hole 510 is consistent with the above description, and this embodiment will not be described again.

[0067] In an embodiment, no matter the interception portion 310 is arranged in any one or more of the end plate 300, the stator core 200 or the casing 100, please refer to Figure 2 and Figure 4 In the circumferential direction of the stator core 200, the interception portion 310 covers the corresponding oil return hole 210. It can be understood that the interception portion 310 is opposite to the oil return hole 210 in the axial direction, and the size of the interception portion 310 along the circumferential direction of the stator core 200 is equal to or greater than the length of the oil return hole 210 in the same direction, so as to ensure that the oil return hole 210 is fully covered or at least contained in the shielding area of the interception portion 310 in the circumferential direction. In this way, the oil liquid must flow back from the gap between the interception portion 310 and the oil return hole 210 in the radial direction, which guarantees the stability of the interception of the interception portion 310 to the oil return hole 210, and at the same time, reduces the probability of the circumferential deviation of the circulating flow direction of the frozen lubricating oil, thereby guaranteeing the stability of the oil liquid circulating flow. As described above about the relationship between the total area of the interception portion 310 and the total area of the oil passage hole 510, also refer to the interception portion 310 covering the corresponding oil return hole 210 in the circumferential direction of the stator core 200. Of course, in other embodiments, the interception portion 310 and the oil return hole 210 can also be partially misaligned in the circumferential direction.

[0068] For the forming position of the oil return hole 210, in an embodiment, please refer to Figure 2The oil return hole 210 is formed by recessing from the outer periphery of the stator core 200. It can be understood that a plurality of recessed oil return holes 210 are formed on the outer periphery of the stator core 200 in an axial direction, and the oil return hole 210 is recessed inwardly from the outer periphery to a certain depth, forming an axial channel extending inwardly from the outside, and after the stator core 200 is fixedly connected with the casing 100, the oil return hole 210 is enclosed with the casing 100. In this way, a channel path for the downward return of the refrigeration oil can be provided while reducing the structural strength of the stator core 200. Of course, in other embodiments, the oil return hole 210 can also be provided adjacent to the outer periphery of the stator core 200, and the oil return hole 210 is not provided through the outer periphery of the stator core 200.

[0069] In an embodiment, referring to Figure 1 and Figure 2 The compressor further comprises a winding 400, the end plate 300 is fixed to the side of the stator core 200 in the axial direction, the end plate 300 is adapted to the stator teeth 220 of the stator core 200, and the winding 400 is wound around the stator teeth 220 and between the opposite sides of the two end plates 300 in the axial direction. It can be understood that the stator core 200 is composed of a plurality of stacked silicon steel sheets, and the inner periphery is provided with a plurality of stator teeth 220 extending inwardly for supporting and positioning the winding 400. Each stator tooth 220 is wound with a winding 400 conductor composed of an enameled wire to form the armature part of the motor. The two end plates 300 are respectively mounted on the axial ends of the stator core 200, and the inner edge shape matches the distribution of the stator teeth 220 to ensure that the end plate 300 does not interfere with the winding 400 during assembly, while also providing axial support and fixation for the stator core 200. The coil part of the winding 400 is mainly distributed on the stator teeth 220, and the axially extending end part (i.e. the end part of the winding 400) is located between the two end plates 300 and is axially supported by the end plate 300. On the one hand, it prevents the end plate 300 from shifting and affecting the relative position relationship between the oil return hole 210 and the intercepting part 310, and on the other hand, it effectively restricts and supports the end part of the winding 400, limiting the degree of freedom of the winding 400 in the axial direction, preventing it from moving or deforming in the axial direction, and improving the electrical safety and service life of the motor. The end plate 300 can be connected to the stator core 200 by insertion.

[0070] Further, in the present embodiment, referring to Figure 1 and Figure 2The material of the end plate 300 is configured as an insulating material. It can be understood that during the operation of the compressor, the winding 400 passes through a high-voltage current. If the end plate 300 is a metal conductor and is not additionally insulated, under the conditions of vibration, thermal expansion and contraction, or aging of the insulating layer, the end of the winding 400 can be in contact with the end plate 300, and then an electrically conductive loop is formed between the end plate 300, the stator core 200, or the shell 100, which can cause serious faults such as ground short circuit, increased leakage current, or even motor burnout. In the embodiment, the end plate 300 made of insulating material avoids the risk of electric leakage, and improves the electrical safety and operation reliability of the motor and the compressor. Specifically, the material of the end plate 300 can be plastic, insulating resin, or ceramic composite material, etc.

[0071] For the number of the intercepting portions 310 distributed along the circumference, in an embodiment, please refer to Figure 2 The inner periphery of the stator core 200 is spaced along the circumference and has a plurality of stator teeth 220. The number of the stator teeth 220 distributed along the circumference of the stator core 200 is n3, and satisfies: wherein, , It can be understood that the number of the intercepting portions 310 is not less than the ratio of the number of the oil return holes 210 to the number of the stator teeth 220. For example, when the number of the stator teeth 220 in the stator core 200 is 6 and the number of the oil return holes 210 is 12, the number of the intercepting portions 310 is at least 2, which links the number of the intercepting portions 310 to the number of the stator teeth 220. When the number of the stator teeth 220 is high, the power of the motor is large, and the work of the cylinder 502 is strong, the efficiency of the refrigerated lubricating oil flowing upward from the rotor 600 is high, and correspondingly, the efficiency of the refrigerated lubricating oil flowing back from the oil return hole 210 also needs to be kept at a high level. Therefore, the number of the intercepting portions 310 should not be too large. When the number of the stator teeth 220 is high, according to the ratio of n1 to n3, the number of the intercepting portions 310 can be small. Therefore, the number of the intercepting portions 310 is limited to , so that the number of the intercepting portions 310 is adapted to the power of the motor. When the number of the stator teeth 220 is high, the power of the motor and the compressor is large, and the circulation rate of the refrigerated lubricating oil is strong, the number of the intercepting portions 310 can be small, so as to balance the circulation efficiency of the refrigerated lubricating oil and the power of the compressor. Correspondingly, when the number of the oil return holes 210 is large, the rate of the refrigerated lubricating oil flowing back is fast, which can easily reduce the oil level of the compressor and affect the operation of the compressor. At this time, the number of the intercepting portions 310 is increased correspondingly, which effectively inhibits the backflow efficiency of the refrigerated lubricating oil and ensures that the oil level of the compressor is maintained in a reasonable range, thereby improving the operation stability of the compressor.

[0072] The application further provides a refrigeration equipment, which comprises a compressor, and the specific structure of the compressor is referred to the above-mentioned embodiments. Since the refrigeration equipment adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here. The refrigeration equipment can be configured as an air conditioner, a refrigerator or the like.

[0073] The above merely illustrates the embodiments of the present application, and does not limit the protection scope of the present application. Any equivalent structure transformation made according to the technical concept of the present application, or direct / indirect application in other related technical fields is included in the protection scope of the present application.

Claims

1. A compressor, characterized in that, The compressor includes: Housing, motor, and fasteners; The motor includes a stator core, an end plate, and a rotor. The stator core is fixed inside the housing. The stator core has multiple oil return holes distributed circumferentially, and the oil return holes are arranged axially through the stator core. The end plate is located on the axial side of the stator core; The rotor is rotatably mounted on the inner circumference of the stator core. The rotor shaft is connected to the fixing member, which is located below the rotor. The outer circumference of the stator core and the outer circumference of the fixing member are fixedly connected to the inner circumference of the housing. The fixing member has multiple oil passage holes distributed circumferentially. In this motor, at least one of the stator core and the end plate is provided with multiple intercepting parts. The intercepting parts and the oil return holes are at least partially opposite each other along the axial direction. The distance from the top of the intercepting part to the center of the stator core is L1, the maximum distance from the oil return hole to the center of the stator core is L2, and the minimum distance from the oil return hole to the center of the stator core is L3. The number of oil return holes distributed along the circumference of the motor is n1, and the number of intercepting parts is n2. , ; satisfy: , Or, satisfying: At least some L1 values ​​satisfy: ; The central angles of the multiple intercepting parts corresponding to the shaft center of the compressor are θ1, θ2, ..., θn, respectively. The maximum distance from the oil passage hole to the shaft center of the compressor is M1, and the minimum distance from the oil passage hole to the shaft center of the compressor is M2. The central angles of the multiple oil passage holes corresponding to the shaft center of the compressor are R1, R2, ..., Rn, respectively. The axial height of the compressor cylinder is H1, and the inner diameter of the cylinder is D1. At the position of the minimum distance from the return oil hole to the shaft center of the compressor, the height of the intercepting part protruding radially towards the outer periphery of the stator core is L4, satisfying: 。 2. The compressor as described in claim 1, characterized in that, The interception part protrudes from the outer periphery of the end plate.

3. The compressor as described in claim 1, characterized in that, The compressor also includes a bearing (501) and the cylinder, and the fixing member is configured as either the bearing (501) or the cylinder; And / or, the oil passage is arc-shaped and extends circumferentially along the compressor.

4. A compressor, characterized in that, The compressor includes: Housing, motor, and fasteners; The motor includes a stator core, an end plate, and a rotor. The stator core is fixed inside the housing. The stator core has multiple oil return holes distributed circumferentially, and the oil return holes are arranged axially through the stator core. The end plate is located on the axial side of the stator core; The rotor is rotatably mounted on the inner circumference of the stator core, the rotor shaft is connected to the fixing member, the fixing member is configured as a bearing (501) or cylinder of the rotor, the outer circumference of the stator core and the outer circumference of the fixing member are fixedly connected to the inner circumference of the housing, and the fixing member has a plurality of oil passage holes distributed along the circumferential direction. The housing has multiple intercepting sections circumferentially arranged on its inner periphery. These intercepting sections and the oil return holes are at least partially opposite each other axially. The distance from the top of each intercepting section to the center of the stator core is L5. The maximum distance from the oil return hole to the center of the stator core is L2, and the minimum distance is L3. The number of oil return holes distributed along the circumference of the motor is n1, and the number of intercepting sections is n2. , ; satisfy: , Or, satisfying: At least some L5s satisfy: ; The central angles of the multiple intercepting parts corresponding to the shaft center of the compressor are θ1, θ2, ..., θn, respectively. The maximum distance from the oil passage hole to the shaft center of the compressor is M1, and the minimum distance from the oil passage hole to the shaft center of the compressor is M2. The central angles of the multiple oil passage holes corresponding to the shaft center of the compressor are R1, R2, ..., Rn, respectively. The axial height of the compressor cylinder is H1, and the inner diameter of the cylinder is D1. At the position of the minimum distance from the return oil hole to the shaft center of the compressor, the height of the intercepting part protruding radially towards the outer periphery of the stator core is L4, satisfying: 。 5. The compressor as described in claim 1 or 4, characterized in that, In the circumferential direction of the stator core, the intercepting part covers the corresponding oil return hole; And / or, the stator core has a plurality of stator teeth spaced circumferentially along its inner periphery, and the number of stator teeth distributed in the circumferential direction of the motor is n3, satisfying: ,in, , .

6. The compressor as described in claim 1 or 4, characterized in that, The oil return hole is recessed into the outer periphery of the stator core.

7. The compressor as described in claim 1 or 4, characterized in that, The motor also includes a winding, the end plate is fixed to the side of the stator core in the axial direction, the end plate is adapted to the stator teeth of the stator core, the winding is wound around the stator teeth, and is wound in the axial direction between the opposite sides of the two end plates. And / or, the end plate is configured as an insulating material.

8. A refrigeration device, characterized in that, Includes the compressor as described in any one of claims 1 to 7.

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