Rotor assembly, compressor and refrigeration device

Abstract

This invention discloses a rotor assembly, a compressor, and a refrigeration device. The rotor assembly includes a rotor core, a rotating shaft, a counterweight, and a baffle. The rotating shaft has a first end through a shaft hole and an oil passage extending axially through it. The first end has an oil outlet hole communicating with the oil passage. The counterweight is fixed to the end of the rotor core near the oil outlet hole. The baffle is connected to the side of the counterweight away from the rotor core. The baffle has a through hole with a diameter greater than or equal to the diameter of the oil outlet hole, so that the baffle does not obstruct the oil flow from the oil outlet hole. By cooperating with the rotating shaft and the rotor core, when the peripheral wall of the through hole abuts against the rotating shaft or the rotor core, the oil outlet hole of the rotating shaft can be separated from the negative pressure area generated by the counterweight, effectively reducing the pressure difference between the oil suction hole and the oil outlet hole of the rotating shaft, suppressing the oil flow, and thus achieving the purpose of stabilizing the oil sump.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and in particular to a rotor assembly, compressor and refrigeration equipment. Background Technology

[0002] The operational reliability of the pump body components of a refrigeration compressor mainly depends on the role of lubricating oil. With the development of compressor miniaturization and high speed, as well as the use of some new environmentally friendly refrigerants, designing a compressor that can ensure the stability of the internal oil sump for adequate lubrication has become an important issue.

[0003] In related technologies, compressors use balance blocks to correct the imbalance of rotor assembly caused by the eccentricity of the rotating shaft, ensuring the smooth rotation of the rotor assembly. However, when the balance blocks rotate, they generate high-speed rotating airflow, which creates negative pressure, resulting in a pressure difference between the oil suction port and the oil outlet port of the rotating shaft, causing uneven oil output and affecting the stability of the oil sump. Summary of the Invention

[0004] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a rotor assembly that can effectively reduce the pressure difference between the oil suction port and the oil outlet port of the rotating shaft, suppress the oil output, and achieve the purpose of stabilizing the oil level in the oil sump.

[0005] The present invention also provides a compressor and a refrigeration device including the above-described rotor assembly.

[0006] According to a first aspect of the present invention, a rotor assembly includes a rotor core, a rotating shaft, a counterweight, and a baffle. The rotor core has a shaft hole. The rotating shaft has a first end portion passing through the shaft hole and has an oil passage extending axially therethrough. The first end portion has an oil outlet hole communicating with the oil passage. The counterweight is fixed to one end of the rotor core near the oil outlet hole. The baffle is connected to the side of the counterweight away from the rotor core. The baffle has a through hole with a diameter greater than or equal to the diameter of the oil outlet hole, and the peripheral wall of the through hole abuts against the rotating shaft or the rotor core.

[0007] The rotor assembly according to embodiments of the present invention has at least the following beneficial effects:

[0008] The first end of the rotating shaft passes through the shaft hole. The rotating shaft has an oil passage that runs through the shaft along its axial direction. The oil outlet of the oil passage is located at the first end. A balance block is fixedly located at the end of the rotor core near the oil outlet. A baffle is connected to the side of the balance block away from the rotor core. The baffle has a through hole corresponding to the oil outlet. Since the diameter of the through hole is greater than or equal to the diameter of the oil outlet, the baffle does not obstruct the oil flow from the oil outlet. Through the cooperation of the baffle with the rotating shaft and the rotor core, when the peripheral wall of the through hole abuts against the rotating shaft or the rotor core, the oil outlet of the rotating shaft can be separated from the negative pressure area generated by the balance block. This effectively reduces the pressure difference between the oil suction hole and the oil outlet of the rotating shaft, suppresses the oil flow, and thus achieves the purpose of stabilizing the oil level in the oil sump. This method is applied to compressors.

[0009] According to some embodiments of the present invention, the first end protrudes from the end face of the rotor core, the end face of the first end abuts against the end face of the baffle facing the rotor core, and the diameter of the through hole is less than or equal to the diameter of the shaft hole.

[0010] According to some embodiments of the present invention, a flange is formed on one side of the baffle, the flange being arranged axially along the rotation axis and surrounding the through hole.

[0011] According to some embodiments of the present invention, the first end protrudes from the end face of the rotor core, and the inner wall surface of the through hole abuts against the outer wall surface of the first end.

[0012] According to some embodiments of the present invention, the end face of the first end is flush with the end face of the rotor core facing the baffle, the flange is disposed facing the rotor core, and the end away from the baffle abuts against the end face of the first end or the end face of the rotor core.

[0013] According to some embodiments of the present invention, the end face of the first end is recessed relative to the end face of the rotor core, the flange is disposed towards the rotor core, and the end away from the baffle abuts against the end face of the rotor core, the outer peripheral wall of the flange is annular, and the outer diameter of the flange is greater than or equal to the diameter of the shaft hole.

[0014] According to some embodiments of the present invention, the end face of the first end is recessed relative to the end face of the rotor core, the flange is disposed towards the rotor core, and the end away from the baffle abuts against the end face of the first end, the outer peripheral wall of the flange is annular, and the outer diameter of the flange is less than or equal to the diameter of the shaft hole.

[0015] According to some embodiments of the present invention, the baffle and the flange are integrally formed sheet metal stamping parts or plastic parts.

[0016] According to some embodiments of the present invention, the baffle and the balance block are integrally formed castings.

[0017] According to some embodiments of the present invention, the baffle, the balance block and the rotor core are riveted or bolted together.

[0018] According to a second aspect of the present invention, a compressor includes a pump body assembly and a drive mechanism. The drive mechanism includes a stator assembly and a rotor assembly as described in the first aspect of the present invention. The rotor core is rotatably disposed within the stator assembly, and one end of the rotating shaft away from the rotor core is connected to the pump body assembly.

[0019] The compressor according to embodiments of the present invention has at least the following beneficial effects:

[0020] The compressor uses the rotor assembly described in the above embodiment. By fixing the balance block at one end of the rotor core near the oil outlet, and connecting the baffle to the side of the balance block away from the rotor core, the baffle does not obstruct the oil flow from the oil outlet because the diameter of the through hole is greater than or equal to the diameter of the oil outlet. Furthermore, through the cooperation of the baffle with the rotating shaft and the rotor core, when the peripheral wall of the through hole abuts against the rotating shaft or the rotor core, the oil outlet area of ​​the rotating shaft can be separated from the negative pressure area generated by the balance block. This effectively reduces the pressure difference between the oil suction hole and the oil outlet hole of the rotating shaft, suppresses the oil flow, and thus achieves a stable oil level in the oil sump. This improves the reliability of the compressor operation and is suitable for refrigeration equipment such as air conditioners.

[0021] A refrigeration apparatus according to a third aspect of the present invention includes the compressor described in the second aspect of the present invention.

[0022] The refrigeration device according to embodiments of the present invention has at least the following beneficial effects:

[0023] The refrigeration equipment uses the compressor described in the above embodiment. Since the diameter of the through hole is greater than or equal to the diameter of the oil outlet hole, the baffle does not block the oil output from the oil outlet hole. Furthermore, through the cooperation of the baffle with the rotating shaft and the rotor core, when the peripheral wall of the through hole abuts against the rotating shaft or the peripheral wall of the through hole abuts against the rotor core, the oil outlet hole of the rotating shaft can be separated from the negative pressure area generated by the balance block. This effectively reduces the pressure difference between the oil suction hole and the oil outlet hole of the rotating shaft, suppresses the oil output, and thus achieves the purpose of stabilizing the oil level in the oil sump and improving the operational reliability of the refrigeration equipment.

[0024] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. Attached Figure Description

[0025] Figure 1This is a cross-sectional structural schematic diagram of a compressor according to an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the assembly of the baffle, the first balance block, the second balance block and the rotor core according to an embodiment of the present invention;

[0027] Figure 3 This is a cross-sectional structural schematic diagram of the rotor assembly according to the first embodiment of the present invention;

[0028] Figure 4 This is a cross-sectional structural schematic diagram of the rotor assembly according to the second embodiment of the present invention;

[0029] Figure 5 This is a cross-sectional structural schematic diagram of the rotor assembly according to the third embodiment of the present invention;

[0030] Figure 6 This is a cross-sectional structural schematic diagram of the rotor assembly according to the fourth embodiment of the present invention;

[0031] Figure 7 This is a cross-sectional structural schematic diagram of the rotor assembly according to the fifth embodiment of the present invention;

[0032] Figure 8 This is a cross-sectional structural schematic diagram of the rotor assembly according to the sixth embodiment of the present invention;

[0033] Figure 9 This is a cross-sectional structural schematic diagram of a compressor according to another embodiment of the present invention.

[0034] Figure label:

[0035] Compressor 1000;

[0036] Casing 2000;

[0037] Drive mechanism 3000;

[0038] Pump body assembly 4000;

[0039] 5000 liquid storage tank;

[0040] Stator assembly 100;

[0041] Rotor assembly 200; rotor core 210; shaft hole 211; rotating shaft 220; oil passage 221; oil outlet 222; first end 223; first balance block 230; baffle 240; through hole 241; peripheral wall 242; flange 243; second balance block 250; local negative pressure area 260; rivet 270. Detailed Implementation

[0042] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0043] In the description of this invention, it should be understood that the terms upper, lower, axial, circumferential, radial, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0044] In the description of this invention, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0045] In the description of this invention, it should be noted that terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0046] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are some embodiments of the present invention, not all embodiments.

[0047] In a rotary compressor, the pump assembly compresses the refrigerant under the drive of the drive mechanism. The reliability of the compressor operation depends on the lubricating effect of the lubricating oil. The oil sump of the compressor is located at the bottom of the housing. The lubricating oil flows along the hollow structure inside the rotating shaft to the oil outlet and then flows back to the oil sump after lubrication.

[0048] In related technologies, at least one end of the rotor core in the compressor is provided with a balance block. The balance block generally has an irregular shape. The balance block can correct the imbalance of the rotor assembly caused by the eccentricity of the rotating shaft, and ensure that the rotor assembly rotates smoothly.

[0049] When the compressor is working, the rotor assembly is rotating at high speed. The balance block will agitate the airflow, generating a high-speed rotating airflow at the end of the rotor core. A low-pressure area will be formed in the rotating area of ​​the balance block, thus producing a local negative pressure area. As a result, a pressure difference will be formed between the oil suction hole and the oil outlet hole of the rotating shaft, causing a large amount of lubricating oil to be discharged, resulting in uneven oil output. This affects the stability of the oil level in the oil sump and makes it difficult to ensure the reliability of the compressor operation.

[0050] The following is for reference. Figure 1 A compressor 1000 according to an embodiment of the present invention is described, specifically a rotary compressor, which is suitable for refrigeration equipment such as air conditioners.

[0051] Reference Figure 1 As shown, the compressor 1000 includes a housing 2000, a drive mechanism 3000, and a pump assembly 4000. A closed cavity is formed inside the housing 2000. The drive mechanism 3000 and the pump assembly 4000 are disposed inside the cavity. A liquid receiver 5000 is connected to the outside of the housing 2000. The liquid receiver 5000 is connected to the air intake side of the pump assembly 4000. The drive mechanism 3000 is located above the pump assembly 4000. The drive mechanism 3000 includes a stator assembly 100 and a rotor assembly 200. The rotor assembly 200 includes a rotor core 210 and a rotating shaft 220. The rotor core 210 is rotatably disposed inside the stator assembly 100. The upper end of the rotating shaft 220 is connected to the rotor core 210, and the lower end of the rotating shaft 220 is connected to the pump assembly 4000. The rotating shaft 220 is also called a crankshaft. During operation, the drive mechanism 3000 drives the pump assembly 4000 to operate via the rotating shaft 220, thereby compressing the refrigerant.

[0052] It is understood that a shaft hole 211 is provided at the center of the rotor core 210, and the shaft hole 211 penetrates the rotor core 210 along the axial direction of the rotor core 210. The upper end of the rotating shaft 220 passes through the shaft hole 211, and the rotating shaft 220 is provided with an oil passage 221 that penetrates along the axial direction of the rotating shaft 220. The axial direction of the oil passage 221 is the same as the axial direction of the shaft hole 211. In the embodiment, the upper end of the rotating shaft 220 is the first end 223, and the lower end is the second end. The end face of the first end 223 is provided with an oil outlet hole 222, and the end face of the second end is provided with an oil inlet hole. The oil inlet hole and the oil outlet hole 222 are respectively connected to the oil passage 221. The lubricating oil in the oil sump can enter the oil passage 221 from the oil inlet hole and be discharged from the oil outlet hole 222 along the oil passage 221.

[0053] Reference Figure 1 and Figure 2As shown, the rotor assembly 200 also includes a balance block and a baffle 240. The balance block is a first balance block 230, which is fixedly disposed at the end of the rotor core 210 away from the pump body assembly 4000. That is, the first balance block 230 is located at the upper end of the rotor core 210, and the first balance block 230 is spaced apart from the shaft hole 211 so that the first balance block 230 does not affect the assembly of the rotating shaft 220. The baffle 240 is connected to the side of the first balance block 230 away from the rotor core 210. Specifically, the baffle 240 is located at the center of the upper end of the first balance block 230 and has a through hole 241. The through hole 241 is opposite to the oil outlet hole 222, so that the oil outlet hole 222 is connected to the cavity on the side of the baffle 240 away from the first balance block 230 through the through hole 241. This cavity is the upper cavity of the compressor 1000. In this way, the lubricating oil discharged along the oil outlet hole 222 can be discharged into the upper cavity of the compressor 1000 through the through hole 241, so that the baffle 240 will not block the oil outlet hole 222.

[0054] Reference Figure 2 As shown, it should be noted that the baffle 240 is a circular plate structure, and the outer diameter of the baffle 240 is approximately the same as the outer diameter of the rotor core 210. The baffle 240 can cover the first balance block 230. Since the first balance block 230 has an irregular shape, in specific embodiments, the first balance block 230 is arc-shaped or semi-annular. A gap is formed between the baffle 240 and the rotor core 210, and the distance between the two is equal to the thickness of the first balance block 230. The specific dimensions of the first balance block 230 are set according to the actual application requirements and are not specifically limited.

[0055] It is understandable that when the first balance block 230 rotates at high speed, the airflow will be pushed to the outside, resulting in the formation of local negative pressure in the rotation area. The area of ​​local negative pressure can also be understood as the area where the first balance block 230 rotates. Since the local negative pressure area 260 is close to the oil outlet 222, the air pressure in the area where the oil outlet 222 is located is lower than the air pressure in the area where the oil inlet is located, so that a pressure difference is formed between the oil outlet 222 and the oil inlet. This will accelerate the flow of lubricating oil from the oil inlet to the oil outlet 222, and the greater the pressure difference, the greater the oil output.

[0056] Reference Figure 1 and Figure 2As shown, in this embodiment of the invention, the diameter of the through hole 241 is optimized so that it is greater than or equal to the diameter of the oil outlet hole 222, and the baffle 240 does not affect the oil output of the oil outlet hole 222. The baffle 240 cooperates with the rotating shaft 220, causing the peripheral wall 242 of the through hole 241 to abut against the rotating shaft 220, or the baffle 240 cooperates with the rotor core 210, causing the peripheral wall 242 of the through hole 241 to abut against the rotor core 210. In other words, when the baffle 240 is in contact with the rotating shaft 220 or the rotor core 210... In this case, the oil outlet 222 of the rotating shaft 220 can be separated from the local negative pressure area 260 generated by the first balance block 230, so that the oil outlet 222 will not be affected by the local negative pressure area 260, effectively reducing the pressure difference between the oil suction hole and the oil outlet 222 of the rotating shaft 220. Therefore, the pressure difference between the two can be kept stable, avoiding excessive lubricating oil being drawn into the upper chamber of the compressor 1000, suppressing the oil output of the oil outlet 222, thereby forming a stable oil surface, achieving the purpose of stabilizing the oil pool, and ensuring the lubrication and operational reliability of the compressor 1000.

[0057] It should be noted that the peripheral wall 242 of the through hole 241 can be understood as the side wall formed around the through hole 241 on the baffle 240. This side wall is not limited to the inner wall of the through hole 241, but can also be a part adjacent to the inner wall of the through hole 241. That is, the side wall of the through hole 241 has an inner wall surface and an end. When the side wall of the through hole 241 extends toward the rotor core 210, the end of the side wall of the through hole 241 can abut against the end face of the rotor core 210 or the end face of the rotating shaft 220.

[0058] It is understandable that the local negative pressure area 260 generated by the first balance block 230 is located between the baffle 240 and the rotor core 210. When the inner wall of the through hole 241 contacts the rotating shaft 220, the oil outlet 222 will not connect to the local negative pressure area 260 through the gap between the inner wall and the rotating shaft 220, thus achieving the purpose of separating the oil outlet 222 from the local negative pressure area 260. When the peripheral wall 242 of the through hole 241 contacts the rotor core 210, the oil outlet 222 will not connect to the local negative pressure area 260 through the gap between the peripheral wall 242 and the rotor core 210, thus achieving the purpose of separating the oil outlet 222 from the local negative pressure area 260.

[0059] The following example illustrates the structure in which the oil outlet 222 of the rotating shaft 220 is separated from the local negative pressure area 260.

[0060] Reference Figure 3As shown, in some embodiments, the first end 223 of the rotating shaft 220 is connected to the shaft hole 211 of the rotor core 210, and the first end 223 protrudes from the upper end face of the rotor core 210. The upper end face of the rotating shaft 220 is the end face of the first end 223, and the end face of the first end 223 is flush with the upper end face of the first balance block 230, so that the end face of the first end 223 abuts against the lower end face of the baffle 240.

[0061] Among them, such as Figure 3 As shown, the diameter of the oil outlet hole 222 is φ1, the diameter of the shaft hole 211 is φ2, and the diameter of the through hole 241 is φ3. It can be understood that the first end 223 passes through the shaft hole 211. The outer diameter of the first end 223 and the diameter of the shaft hole 211 are both φ2, and satisfy: φ2>φ1. Since the diameter of the through hole 241 needs to be greater than or equal to the diameter of the oil outlet hole 222, and at least part of the end face of the first end 223 is in contact with the upper end face of the rotating shaft 220, that is, the diameter of the through hole 241 is not less than the diameter of the oil outlet hole 222 and does not exceed the diameter of the shaft hole 211, satisfying: φ1≤φ3≤φ2. For example, the diameter of the oil outlet 222 can be set to 3mm, the diameter of the shaft hole 211 can be set to 8mm, and the diameter of the through hole 241 can be set to 3mm, 4mm, 5mm, 8mm, etc. In this way, there will be no gap between the baffle 240 and the rotating shaft 220, which will separate the oil outlet 222 from the local negative pressure area 260, reduce the pressure difference between the oil suction hole and the oil outlet 222 of the rotating shaft 220, suppress the oil output, and thus form a stable oil surface to meet the requirements of a stable oil tank.

[0062] The improvement effect is shown below:

[0063]

[0064]

[0065] It is understandable that the through hole 241 is formed at the center of the baffle 240. When φ1≤φ3≤φ2 is satisfied, the end of the peripheral wall 242 of the through hole 241 facing the rotor core 210 abuts against the upper end face of the rotating shaft 220. At this time, the oil outlet 222 is set close to the through hole 241, and the lubricating oil can be discharged into the upper cavity of the compressor 1000 through the oil outlet 222 and the through hole 241 in sequence, without being affected by the local negative pressure area 260.

[0066] It should be noted that since the baffle 240, the first balance block 230, and the rotating shaft 220 are all fixedly connected to the rotor core 210 and are relatively stationary to each other, there will be no mutual friction, and the rotor assembly 200 has high structural stability.

[0067] In addition, in some embodiments, the inner diameter of the oil passage 221 is not uniformly distributed. The diameters of the oil inlet and outlet holes 222 can be set to be larger than the inner diameter of the middle position of the oil passage 221. That is, the oil passage 221 is a channel structure that is narrow in the middle and wide at both ends, ensuring that the overall structure of the rotating shaft 220 has sufficient strength.

[0068] Combination Figure 1 It is understandable that Figure 1 This illustrates the application of compressor 1000. Figure 3 The rotor assembly 200 of the illustrated embodiment can solve the problem of imbalance caused by the eccentricity of the rotating shaft 220, and can also ensure the lubrication and operational reliability of the compressor 1000.

[0069] Reference Figure 4 As shown, in some embodiments, with Figure 3 The difference in the illustrated embodiment is that the height of the upper end of the rotating shaft 220 protruding from the upper end face of the rotor core 210 is greater than the distance between the baffle 240 and the rotor core 210. The diameter of the shaft hole 211 is equal to the diameter of the through hole 241, satisfying: φ2=φ3. For example, the diameter of the shaft hole 211 and the diameter of the through hole 241 can be set to 5mm, 6mm, 8mm, etc., so that the inner wall surface of the through hole 241 abuts against the outer wall surface of the first end 223, so that there is no gap between the baffle 240 and the rotating shaft 220, thereby separating the oil outlet 222 from the local negative pressure area 260, reducing the pressure difference between the oil suction hole and the oil outlet 222 of the rotating shaft 220, suppressing the oil output, and meeting the requirements of stabilizing the oil tank.

[0070] It should be noted that, Figure 4 In the illustrated embodiment, the first end 223 protrudes from the upper end face of the baffle 240, so that the oil outlet 222 is located above the baffle 240, and the entire inner wall surface of the through hole 241 abuts against the rotating shaft 220. Of course, this is only an example. In some embodiments of the rotating shaft 220, the end face of the first end 223 may be located between the upper and lower end faces of the baffle 240, that is, part of the inner wall surface of the through hole 241 abuts against the rotating shaft 220, which can also achieve the effect of separating the oil outlet 222 from the local negative pressure area 260.

[0071] Reference Figure 5 As shown, in some embodiments, with Figure 4The difference in the embodiment shown is that the baffle 240 is provided with a flange 243 on the side facing the rotor core 210. The flange 243 extends along the axial direction of the rotating shaft 220 and surrounds the through hole 241. It can be understood that the flange 243 is annular, and the inner diameter of the flange 243 is φ4. The inner diameter of the flange 243 is the same as the inner diameter of the through hole 241 and equal to the diameter of the shaft hole 211, that is, it satisfies: φ2=φ3=φ4. For example, the diameter of the shaft hole 211, the diameter of the through hole 241, and the inner diameter of the flange 243 can all be set to 5mm, 6mm, 8mm, etc. The height of the upper end of the rotating shaft 220 protruding from the upper end face of the rotor core 210 is greater than the distance between the baffle 240 and the rotor core 210. This makes the inner wall surface of the flange 243 abut against the outer wall surface of the first end 223, separating the oil outlet 222 from the local negative pressure area 260, reducing the pressure difference between the oil suction hole and the oil outlet 222 of the rotating shaft 220, suppressing the oil output, and meeting the requirements of stabilizing the oil tank.

[0072] It should be noted that, Figure 5 In the illustrated embodiment, the first end 223 protrudes from the upper surface of the baffle 240, so that the oil outlet 222 is located above the baffle 240, and the entire inner wall surface of the flange 243 abuts against the rotating shaft 220. Of course, this is only an example. In some embodiments of the rotating shaft 220, the end face of the first end 223 may be lower than the upper surface of the baffle 240, and part of the inner wall surface of the flange 243 may abut against the rotating shaft 220, which can also achieve the effect of separating the oil outlet 222 from the local negative pressure area 260.

[0073] In addition, as some embodiments of the baffle 240, the flange 243 can also be provided on the upper end face of the baffle 240 and extended in a direction away from the rotor core 210 to meet the requirement of separating the oil outlet 222 from the local negative pressure area 260.

[0074] Reference Figure 6 As shown, in some embodiments, with Figure 5 The difference in the embodiment shown is that the end face of the first end 223 is flush with the upper end face of the rotor core 210, the flange 243 is set towards the rotor core 210, and the lower end face of the flange 243 abuts against the end face of the first end 223. In the embodiment, the following conditions are met: φ2=φ3=φ4. For example, the diameter of the shaft hole 211, the diameter of the through hole 241, and the inner diameter of the flange 243 can all be set to 5mm, 6mm, 8mm, etc., so that no gap is formed between the flange 243 and the rotor core 210.

[0075] Since the flange 243 abuts against the rotor core 210, there will be no gap between the flange 243 and the rotor core 210. Therefore, the rotating shaft 220 does not need to protrude from the upper end face of the rotor core 210. The cooperation between the flange 243 and the rotor core 210 can also ensure that the oil outlet 222 is separated from the local negative pressure area 260, reduce the pressure difference between the oil suction hole and the oil outlet 222 of the rotating shaft 220, suppress the oil output, and meet the requirements of stabilizing the oil tank.

[0076] It should be noted that, Figure 6 The example shown is for illustrative purposes only. The diameter of the through hole 241 is not limited to being equal to the diameter of the shaft hole 211. It can also be that the diameter of the through hole 241 is larger than the diameter of the shaft hole 211, or the diameter of the through hole 241 is smaller than the diameter of the shaft hole 211. When the diameter of the through hole 241 is smaller than the diameter of the shaft hole 211, the lower end face of the flange 243 abuts against the upper end face of the rotating shaft 220, and at the same time, the diameter of the through hole 241 cannot be smaller than the diameter of the oil outlet hole 222. This ensures that the oil outlet hole 222 can be separated from the local negative pressure area 260.

[0077] Reference Figure 7 As shown, in some embodiments, with Figure 6 The difference in the illustrated embodiment is that the end face of the first end 223 is recessed relative to the end face of the rotor core 210, that is, the upper end face of the rotating shaft 220 is lower than the upper end face of the rotor core 210. Figure 7 The inner diameter of the flange 243 is the same as the inner diameter of the through hole 241 and equal to the diameter of the shaft hole 211, that is, φ2=φ3=φ4. For example, the diameter of the shaft hole 211, the diameter of the through hole 241 and the inner diameter of the flange 243 can all be set to 5mm, 6mm, 8mm, etc.

[0078] It should be noted that, considering that the flange 243 has a certain thickness along the radial direction of the rotor core 210, the inner diameter of the flange 243 can be smaller than the inner diameter of the shaft hole 211, and the outer diameter of the flange 243 needs to be greater than or equal to the diameter of the shaft hole 211. Specifically, the outer diameter of the flange 243 is φ5, which satisfies: φ5≥φ2. For example, the diameter of the shaft hole 211 can be set to 6mm, and the outer diameter of the flange 243 can be set to 6mm, 7mm, 8mm, etc., so that no gap is formed between the flange 243 and the rotor core 210.

[0079] Reference Figure 8 As shown, in some embodiments, with Figure 7The difference in the illustrated embodiment is that the lower end of the flange 243 extends into the shaft hole 211 and abuts against the end face of the first end 223. The outer diameter of the flange 243 is less than or equal to the diameter of the shaft hole 211, i.e., satisfying: φ5≤φ2 and φ4≥φ1. For example, the diameter of the oil outlet hole 222 can be set to 3mm, the diameter of the through hole 241 can be set to 5mm, the diameter of the shaft hole 211 can be set to 8mm, and the outer diameter of the flange 243 can be set to 7mm, 8mm, etc. It can be understood that when φ5=φ2, the outer peripheral wall of the flange 243 abuts against the inner peripheral wall of the shaft hole 211. At this time, the flange 243 abuts against both the rotor core 210 and the rotating shaft 220, ensuring that the oil outlet hole 222 is separated from the local negative pressure area 260.

[0080] In some embodiments, the end face of the first end 223 may protrude from the upper end face of the rotor core 210, the outer peripheral wall of the rotating shaft 220 abuts against the inner peripheral wall of the through hole 241, and the lower end face of the flange 243 abuts against the upper end face of the rotor core 210. That is, the flange 243 abuts against both the rotor core 210 and the rotating shaft 220, ensuring that the oil outlet 222 is separated from the local negative pressure area 260. Specifically, refer to... Figure 9 As shown, Figure 9 The rotor assembly 200 of the above embodiment is shown to be used in compressor 1000, which can ensure the lubrication and operational reliability of compressor 1000.

[0081] Reference Figures 2 to 8 As shown, in some embodiments, the rotor assembly 200 further includes a second balance block 250, which is fixedly connected to the lower end face of the rotor core 210. The first balance block 230 and the second balance block 250 can accurately correct the imbalance of the rotor assembly 200 caused by the eccentricity of the rotating shaft 220, ensuring that the rotor assembly 200 can rotate smoothly and further improving stability.

[0082] Reference Figure 2 As shown, in some embodiments, the baffle 240, the first balance block 230, the second balance block 250, and the rotor core 210 are fixed by riveting. Specifically, rivets 270 are used; they can pass through the baffle 240, the first balance block 230, the rotor core 210, and the second balance block 250 in sequence to lock and fix them, making the rotor assembly 200 structurally stable and reliable. Of course, this is only an example; bolts can also be used to fix the baffle 240, the first balance block 230, the second balance block 250, and the rotor core 210, depending on the actual application requirements.

[0083] It should be noted that, Figure 2The diagram shows that the baffle 240 and the first balance block 230 adopt a split structure. Of course, this is only an example. In some embodiments, the baffle 240 and the first balance block 230 can adopt an integral molding structure. Specifically, it can be an integrally molded casting or injection molded part. The structure is stable, has high manufacturability, and is also conducive to reducing the number of parts.

[0084] Reference Figures 5 to 8 As shown, in some embodiments, when the baffle 240 needs to be provided with a flange 243, the baffle 240 can be made of sheet metal or plastic. For example, the flange 243 can be formed by integral stamping on the baffle 240, thereby obtaining a sheet metal stamping part in which the baffle 240 and the flange 243 are integrally formed. Alternatively, it can be integrally injection molded from plastic. The specific choice can be made according to the actual application requirements.

[0085] The embodiments of the present invention also provide a refrigeration device, which can be an air conditioner, such as a split air conditioner, a unitary air conditioner, etc. The refrigeration device adopts the compressor 1000 of the above embodiments, and the compressor 1000 adopts the rotor assembly 200 of the above embodiments.

[0086] Since the diameter of the through hole 241 is greater than or equal to the diameter of the oil outlet hole 222, the baffle 240 does not block the oil output of the oil outlet hole 222. Furthermore, through the cooperation of the baffle 240 with the rotating shaft 220 and the rotor core 210, when the peripheral wall 242 of the through hole 241 abuts against the rotating shaft 220 or the peripheral wall 242 of the through hole 241 abuts against the rotor core 210, the oil outlet hole 222 of the rotating shaft 220 can be separated from the local negative pressure area 260 generated by the balance block. This effectively reduces the pressure difference between the oil suction hole and the oil outlet hole 222 of the rotating shaft 220, prevents excessive lubricating oil from being drawn into the upper chamber of the compressor 1000, and suppresses the oil output of the oil outlet hole 222, thereby forming a stable oil surface, achieving the purpose of stabilizing the oil pool, and ensuring the lubrication and operational reliability of the compressor 1000.

[0087] Since the refrigeration equipment adopts all the technical solutions of the compressor 1000 in the above embodiments, it has at least all the beneficial effects brought about by the technical solutions in the above embodiments, which will not be repeated here.

[0088] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A rotor assembly, characterized in that, include: The rotor core has a shaft hole; A rotating shaft has a first end that passes through the shaft hole, the rotating shaft is provided with an oil passage that extends along its axial direction, and the first end is provided with an oil outlet that communicates with the oil passage; A balance block is fixed to one end of the rotor core near the oil outlet hole; A baffle is connected to the side of the balance block away from the rotor core. The baffle has a through hole with a diameter greater than or equal to the diameter of the oil outlet hole, and the peripheral wall of the through hole abuts against the rotating shaft or the rotor core.

2. The rotor assembly according to claim 1, characterized in that, The first end protrudes from the end face of the rotor core, the end face of the first end abuts against the end face of the baffle facing the rotor core, and the diameter of the through hole is less than or equal to the diameter of the shaft hole.

3. The rotor assembly according to claim 1, characterized in that, A flange is formed on one side of the baffle, which is arranged along the axial direction of the rotation axis and surrounds the through hole.

4. The rotor assembly according to claim 1 or 3, characterized in that, The first end protrudes from the end face of the rotor core, and the inner wall surface of the through hole abuts against the outer wall surface of the first end.

5. The rotor assembly according to claim 3, characterized in that, The end face of the first end is flush with the end face of the rotor core facing the baffle, the flange is disposed facing the rotor core, and the end away from the baffle abuts against the end face of the first end or the end face of the rotor core.

6. The rotor assembly according to claim 3, characterized in that, The end face of the first end is recessed relative to the end face of the rotor core, the flange is oriented toward the rotor core, and the end away from the baffle abuts against the end face of the rotor core. The outer peripheral wall of the flange is annular, and the outer diameter of the flange is greater than or equal to the diameter of the shaft hole.

7. The rotor assembly according to claim 3, characterized in that, The end face of the first end is recessed relative to the end face of the rotor core. The flange is oriented toward the rotor core, and the end away from the baffle abuts against the end face of the first end. The outer peripheral wall of the flange is annular, and the outer diameter of the flange is less than or equal to the diameter of the shaft hole.

8. The rotor assembly according to claim 3, characterized in that, The baffle and the flange are integrally formed sheet metal stamping parts or plastic parts.

9. The rotor assembly according to claim 1, characterized in that, The baffle and the balance block are integrally cast parts.

10. The rotor assembly according to claim 1, characterized in that, The baffle and the balance block are riveted or bolted to the rotor core.

11. A compressor, characterized in that, include: Pump body assembly; A drive mechanism includes a stator assembly and a rotor assembly as described in any one of claims 1 to 10, wherein the rotor core is rotatably disposed within the stator assembly, and one end of the rotating shaft away from the rotor core is connected to the pump body assembly.

12. A refrigeration device, characterized in that, Includes the compressor as described in claim 11.

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