Baffle structure, rotor assembly and compressor

Abstract

The application provides a baffle structure, a rotor assembly and a compressor, relates to the technical field of compressors, and solves the technical problem that the mixed fluid of refrigeration oil and refrigerant is prone to being discharged from the compressor through the air gap channel, resulting in excessive oil discharge rate of the compressor. The baffle structure, the rotor assembly and the compressor comprise a fixed base arranged on a rotor core, wherein a through hole is arranged on the fixed base; an active baffle is arranged above the through hole, and the middle part of the active baffle is rotationally arranged on the fixed base, so that the active baffle can swing radially along the rotor core. The baffle structure, the rotor assembly and the compressor are used for reducing the oil discharge rate, ensuring the oil level in the compressor, ensuring the lubricating effect, and further improving the heat exchange efficiency, the air conditioner energy efficiency and the operation reliability.

Description

Technical Field

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

[0002] As air conditioning systems increasingly demand higher energy efficiency ratios and more compact designs, compressors are evolving towards miniaturization and higher power density. Under the same cooling capacity output conditions, the external volume of compressors continues to decrease, while the amount of refrigerant required for system circulation and the amount of refrigerant oil required for internal lubrication increase accordingly, resulting in a significant increase in internal fluid density.

[0003] In current compressor structures, an air gap channel inevitably exists between the motor rotor and stator. In a high-density fluid environment, during compressor operation, the mixture of refrigerant oil and refrigerant easily migrates upwards through the motor air gap and balance holes under pressure pulsation, eventually reaching the compressor cover via the upper cavity of the motor and exiting the compressor through the exhaust pipe. This phenomenon is positively correlated with the compressor's operating frequency: the higher the speed, the faster the suction and discharge frequency, the greater the fluid kinetic energy, and the more significant the migration of the oil-refrigerant mixture.

[0004] This phenomenon occurs because a large amount of refrigerant oil enters the air conditioning system piping with the air, causing the oil level inside the compressor to drop. This can easily lead to problems such as excessive oil discharge, lubrication failure, reduced heat exchange efficiency, energy efficiency degradation, and even reliability risks. Summary of the Invention

[0005] The purpose of this invention is to provide a baffle structure, rotor assembly, and compressor to solve the technical problem in the prior art where the mixed fluid of refrigeration oil and refrigerant is easily discharged from the compressor through the air gap channel, leading to excessive oil discharge rate of the compressor. The various technical effects of the preferred solutions among the many technical solutions provided by this invention are detailed below.

[0006] To achieve the above objectives, the present invention provides the following technical solution: The baffle structure provided by the present invention includes: A fixed base is mounted on the rotor core, and the fixed base is provided with flow holes; A movable baffle is disposed above the flow hole, and the middle part of the movable baffle is rotatably disposed on the fixed base so that the movable baffle can swing radially along the rotor core. The gas flow within the flow hole can drive the movable baffle to swing, so that the movable baffle can switch between a first state and a second state. When the movable baffle is in the first state, at least a portion of the movable baffle overlaps with the air gap between the rotor core and the stator core in the vertical direction; when the movable baffle is in the second state, the movable baffle does not overlap with the air gap between the rotor core and the stator core in the vertical direction.

[0007] As an optional implementation, an elastic element is also included; The elastic element is disposed between the movable baffle and the fixed base. The gas flow in the flow hole can drive the movable baffle to overcome the elastic force of the elastic element and change the swing angle of the movable baffle on the fixed base, so that the movable baffle can switch between the first state and the second state.

[0008] As an optional implementation, a guide flange is provided on the side of the movable baffle away from the center of the rotor core, and the guide flange extends toward the side away from the rotor core. When the movable baffle swings to the first state, the guide flange at least partially overlaps with the air gap between the rotor core and the stator core in the vertical direction; when the movable baffle swings to the second state, the guide flange does not overlap with the air gap between the rotor core and the stator core in the vertical direction.

[0009] As an optional implementation, the guide flange is arranged perpendicular to the movable baffle.

[0010] As an optional implementation, the movable baffle has a fan-shaped structure, with the inner diameter of the side of the movable baffle closer to the rotor core being larger than the inner diameter of the rotor core, and the side of the movable baffle farther from the center of the rotor core having the same outer diameter as the rotor core.

[0011] As an optional implementation, the central angle of the movable baffle is θ, α1 < θ < α2, where α1 is the opening angle of the arcs on both sides of the flow hole, and α2 is the opening angle between the center positions of any two adjacent flow holes.

[0012] As an optional implementation, the thickness of the movable baffle is T, where 2mm ≤ T ≤ 3mm.

[0013] As an optional implementation, when the movable baffle rotates to be parallel to the fixed base, the distance between the movable baffle and the fixed base is H2, which should satisfy H2=M*tanβmax, where βmax is the maximum angle between the guide flange and the vertical direction at the initial or final position, and M is the distance between the center of the elastic element installation position and the center of the rotor core.

[0014] As an optional implementation, βmax>arctan(L1 / H1), where: L1 is the distance from the outer diameter of the fixed base to the inner wall of the compressor housing, and H1 is the distance from the upper end face of the fixed base to the upper end face of the compressor housing.

[0015] As an optional implementation, (R4-R3) / 2+R3<M<R4-(R4-R3) / 4, where the outer radius of the fixed base is R4, the inner radius of the flow hole is R2, and the outer radius of the flow hole is R3.

[0016] As an optional implementation, the elastic element is a spring, and the required formulas for the spring wire diameter and the finished product's mean diameter are: , in: △x: The compression of the spring, △x≤10mm; d: Diameter of spring steel wire; Dm: Mean diameter of the finished spring; Nc: Effective number of spring coils, Nc≥5; S: Area of ​​a single flow orifice; n: compressor speed; K2: Coefficient constant.

[0017] As an optional implementation, the fixed base is a circular structure with a central inner hole in the middle, and the movable baffles are arranged in a circular array on the fixed base.

[0018] As an optional implementation, the fixed base is provided with rivet holes, and the fixed base is connected to the rotor core through the rivet holes.

[0019] A rotor assembly including the baffle structure described above.

[0020] A compressor comprising the rotor assembly as described above.

[0021] The beneficial effects of this invention are as follows: The baffle structure, rotor assembly, and compressor provided by this invention include a fixed base and a movable baffle. The fixed base is disposed on the rotor core and has flow holes, which correspond to the ventilation holes on the rotor core. The movable baffle is disposed above the flow holes and can separate the lubricating oil in the airflow within the flow holes, preventing lubricating oil from being discharged from the compressor and reducing the oil discharge rate. Furthermore, the middle portion of the movable baffle is rotatably disposed on the fixed base, allowing the movable baffle to swing radially along the rotor core. The gas flow within the flow holes drives the movable baffle to swing, enabling it to switch between a first state and a second state. When the baffle is in the first state, at least part of the movable baffle overlaps with the air gap between the rotor core and the stator core in the vertical direction. At this time, the movable baffle can guide the refrigerant oil and refrigerant mixture between the stator and rotor to change direction, promote the separation of refrigerant oil and refrigerant, reduce the amount of refrigerant oil discharged from the compressor, reduce the oil discharge rate, ensure the oil level inside the compressor, and ensure lubrication effect, so as to further improve heat exchange efficiency, air conditioning energy efficiency and operational reliability. When the movable baffle is in the second state, the movable baffle does not overlap with the air gap between the rotor core and the stator core in the vertical direction. At this time, the gas discharged from the air gap between the rotor core and the stator core flows smoothly and without resistance, and the compressor operation effect is optimized. Attached Figure Description

[0022] 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 these drawings without creative effort.

[0023] Figure 1 This is a partial structural schematic diagram of the compressor of the present invention; Figure 2 This is a partial structural cross-sectional view of the compressor of the present invention; Figure 3 This is a top view of part of the compressor structure of the present invention; Figure 4 This is a schematic diagram of the baffle structure of the present invention installed on the rotor core; Figure 5 This is a front view of the baffle structure of the present invention; Figure 6 This is a side view of the baffle structure of the present invention; Figure 7 This is a schematic diagram of the structure of the fixing base of the present invention; Figure 8This is a front view of the fixing base of the present invention; Figure 9 This is a schematic diagram of the rotor core structure of the present invention; Figure 10 This is a schematic diagram (a) of the structure of the movable baffle of the present invention; Figure 11 This is a schematic diagram (II) of the structure of the movable baffle of the present invention; Figure 12 This is a front view of the movable baffle of the present invention; Figure 13 This is a side view of the movable baffle of the present invention; Figure 14 This is a diagram showing the usage state of the baffle structure of the present invention (I); Figure 15 This is a diagram showing the usage state of the baffle structure of the present invention (II); Figure 16 This is a diagram showing the usage state of the baffle structure of the present invention (III); Figure 17 This is a diagram showing the usage state of the baffle structure of the present invention (IV); Figure 18 This is a diagram showing the usage state of the baffle structure of the present invention (V); Figure 19 Simulation diagram of oil content in Embodiment 1 of the present invention.

[0024] In the picture: 100. Baffle structure; 200. Rotor core; 300. Stator assembly; 400. Compressor housing; 110. Fixed base; 120. Movable baffle; 130. Elastic components; 140. Guide flange; 111. Flow hole; 112. Middle inner hole; 113. Rivet hole; 114. Mounting bracket; 115. Mounting hole. Detailed Implementation

[0025] Please refer to the attached diagram below. Figures 1 to 19This document explains the content of the invention and the differences between the invention and existing technologies. The technical solutions (including preferred solutions) of the invention are further described in detail below with reference to accompanying drawings and examples of optional embodiments. It should be noted that any technical feature or solution in this embodiment is one or more of a variety of optional technical features or solutions. For the sake of brevity, this document cannot exhaustively list all alternative technical features and solutions of the invention, nor is it convenient to emphasize that each implementation of a technical feature is one of multiple optional implementations. Therefore, those skilled in the art should understand that any technical means provided by the invention can be replaced, or any two or more technical means or features provided by the invention can be combined to obtain new technical solutions. No technical feature or solution in this embodiment limits the scope of protection of the invention. The scope of protection of the invention should include any alternative technical solutions that can be conceived by those skilled in the art without creative effort, as well as new technical solutions obtained by combining any two or more technical means or features provided by the invention.

[0026] In the description of this invention, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0028] This invention provides a baffle structure, rotor assembly, and compressor that reduce oil discharge rate, ensure oil level inside the compressor, and guarantee lubrication effect, thereby further improving heat exchange efficiency, air conditioning energy efficiency, and operational reliability.

[0029] The following is combined with Figures 1 to 19The technical solution provided by this invention will be described in more detail below.

[0030] This invention provides a baffle structure 100, comprising: A fixed base 110 is mounted on the rotor core 200, and the fixed base 110 is provided with a flow hole 111. A movable baffle 120 is disposed above the flow hole 111, and the middle part of the movable baffle 120 is rotatably disposed on the fixed base 110 so that the movable baffle 120 can swing radially along the rotor core 200. The gas flow in the flow hole 111 can drive the movable baffle 120 to swing, so that the movable baffle 120 can switch between the first state and the second state. When the movable baffle 120 is in the first state, at least a portion of the movable baffle 120 overlaps with the air gap between the rotor core 200 and the stator core in the vertical direction; when the movable baffle 120 is in the second state, the movable baffle 120 does not overlap with the air gap between the rotor core 200 and the stator core in the vertical direction.

[0031] The baffle structure 100 provided by the present invention includes a fixed base 110 and a movable baffle 120. The fixed base 110 is disposed on the rotor core 200 and has a flow passage 111, which corresponds to the vent on the rotor core 200. The movable baffle 120 is disposed above the flow passage 111 and can separate the lubricating oil in the airflow in the flow passage 111, thereby preventing the lubricating oil from being discharged from the compressor and reducing the oil discharge rate.

[0032] Furthermore, the central part of the movable baffle 120 is rotatably mounted on the fixed base 110, so that the movable baffle 120 can swing radially along the rotor core 200. The gas flow in the flow hole 111 can drive the movable baffle 120 to swing, so that the movable baffle 120 can switch between a first state and a second state. When the movable baffle 120 is in the first state, the movable baffle 120 has at least a partially overlapping area with the air gap between the rotor core 200 and the stator core in the vertical direction. At this time, the movable baffle 120 can guide the refrigerant oil and refrigerant mixture between the stator and the rotor to change direction, promote the separation of refrigerant oil and refrigerant, reduce the discharge of refrigerant oil from the compressor, reduce the oil discharge rate, ensure the oil level inside the compressor, and ensure the lubrication effect, so as to further improve the heat exchange efficiency, air conditioning energy efficiency and operational reliability. When the movable baffle 120 is in the second state, the air gap between the movable baffle 120 and the rotor core 200 and stator core does not overlap in the vertical direction. At this time, the gas discharged from the air gap between the rotor core 200 and stator core flows smoothly and without resistance, and the compressor operation effect is optimized.

[0033] It is understood that the middle part of the movable baffle 120 is rotatably mounted on the fixed base 110 so that the movable baffle 120 can swing radially along the rotor core 200. This means that the first end of the movable baffle 120 facing the center of the rotor core 200 and the second end away from the center of the rotor core 200 are in a free state and can rotate around the rotation axis of the middle part of the movable baffle 120, so that the first end and the second end of the movable baffle 120 can move to fit against the fixed base 110 respectively, reaching the two extreme positions of the swing of the movable baffle 120.

[0034] When the first end of the movable baffle 120 is in contact with the fixed base 110, the second end of the movable baffle 120 swings to its highest position; when the second end of the movable baffle 120 is in contact with the fixed base 110, the second end of the movable baffle 120 swings to its highest position.

[0035] To ensure that when the movable baffle 120 is in the first state, the movable baffle 120 has at least a partially overlapping area with the air gap between the rotor core 200 and the stator core in the vertical direction, it is preferable that when the second end of the movable baffle 120 is in contact with the fixed base 110, the second end of the movable baffle 120 is configured to cover the rotor core 200 and the stator core.

[0036] In some alternative embodiments, when the movable baffle 120 is parallel to the fixed base 110, the second end of the movable baffle 120 is flush with the edge of the fixed base 110.

[0037] Correspondingly, at any position between the first end of the movable baffle 120 being in contact with the fixed base 110 and the movable baffle 120 being parallel to the fixed base 110, the air gap between the movable baffle 120 and the rotor core 200 and the stator core does not have an overlapping area in the vertical direction.

[0038] When the second end of the movable baffle 120 is in contact with the fixed base 110 and the movable baffle 120 is parallel to the fixed base 110, the movable baffle 120 has at least a partially overlapping area with the air gap between the rotor core 200 and the stator core in the vertical direction.

[0039] When the compressor is in use, as the frequency changes, the operating speed changes, the gas flow rate is different, and the impact force is different, the swing angle of the movable baffle 120 will be different.

[0040] When the operating frequency is at a low to medium frequency, the compressor has a low oil content and the airflow is weak. The movable baffle 120 swings between its first end being in contact with the fixed base 110 and the movable baffle 120 being parallel to the fixed base 110. The air gap between the movable baffle 120 and the rotor core 200 and the stator core does not overlap in the vertical direction, allowing the refrigerant oil and refrigerant mixture to flow directly vertically without resistance between the stator and rotor air gaps. The flow is smoother, and the compressor operates at its best under these conditions.

[0041] When the operating frequency is high, the compressor has a high oil content, making the oil content issue a key concern. At this time, the airflow is strong, and the movable baffle 120 swings between its second end being in contact with the fixed base 110 and the movable baffle 120 being parallel to the fixed base 110. The movable baffle 120 has at least a partially overlapping area in the vertical direction with the air gap between the rotor core 200 and the stator core, guiding the refrigerant oil and refrigerant mixture between the stator and rotor air gaps to change direction and finally flow back to the bottom of the compressor, ensuring the lubrication of the pump body parts and reducing the amount of refrigerant oil entering the air conditioning system piping through the exhaust pipe of the upper cover.

[0042] In some embodiments of the present invention, an elastic element 130 is also included; The elastic element 130 is disposed between the movable baffle 120 and the fixed base 110. The gas flow in the flow hole 111 can drive the movable baffle 120 to overcome the elastic force of the elastic element 130 and change the swing angle of the movable baffle 120 on the fixed base 110 so that the movable baffle 120 can switch between the first state and the second state.

[0043] In some embodiments of the present invention described above, by providing an elastic element 130, which is disposed between the movable baffle 120 and the fixed base 110, when the compressor is running and gas flows through the flow hole 111, the movable baffle 120 can be driven to swing, thereby overcoming the elastic force of the elastic element 130 and changing the swing angle of the movable baffle 120 on the fixed base 110. The provision of the elastic element 130 can ensure that the swing position of the movable baffle 120 is controllable. When the compressor is running at low to medium frequency, the movable baffle 120 will not block the flow of the refrigerant oil and refrigerant mixture; while when the compressor is running at high frequency, the movable baffle 120 can block the air gap, changing the flow of the refrigerant oil and refrigerant mixture.

[0044] In some embodiments of the present invention, the movable baffle 120 can also be controlled by gravity difference to achieve the swing position of the movable baffle 120. For example, a counterweight structure is provided at the first end of the movable baffle 120.

[0045] In some embodiments of the present invention, a guide flange 140 is provided on the side of the movable baffle 120 away from the center of the rotor core 200, and the guide flange 140 extends toward the side away from the rotor core 200. When the movable baffle 120 swings to the first state, the guide flange 140 has at least a partially overlapping area with the air gap between the rotor core 200 and the stator core in the vertical direction; when the movable baffle 120 swings to the second state, the guide flange 140 does not have an overlapping area with the air gap between the rotor core 200 and the stator core in the vertical direction.

[0046] In some embodiments of the present invention described above, by providing a guide flange 140 on the movable baffle 120, when the movable baffle 120 is in the first state, the guide flange 140 at least partially overlaps with the air gap between the rotor core 200 and the stator core in the vertical direction, and the guide flange 140 can block the air gap, changing the flow of the mixture of refrigeration oil and refrigerant gas; when the movable baffle 120 is in the second state, the guide flange 140 does not overlap with the air gap between the rotor core 200 and the stator core in the vertical direction, and does not affect the flow of the mixture gas.

[0047] Optionally, the guide flange 140 is inclined toward the inner wall of the compressor housing 400, thereby guiding the mixed gas to the inner wall of the compressor housing 400, and the refrigerant oil can flow along the inner wall of the compressor housing 400 to the bottom of the compressor, ensuring the lubrication of the pump parts, while reducing the amount of refrigerant oil entering the air conditioning system pipeline through the exhaust pipe of the upper cover.

[0048] In some embodiments of the present invention, the guide flange 140 is arranged perpendicularly to the movable baffle 120.

[0049] In some embodiments of the present invention described above, the guide flange 140 is arranged perpendicularly to the movable baffle 120. When the second end of the movable baffle 120 is in contact with the fixed base 110, the guide flange 140 can tilt toward the inner wall of the compressor housing 400, thereby guiding the mixed gas to the inner wall of the compressor housing 400. The refrigerant oil can flow along the inner wall of the compressor housing 400 to the bottom of the compressor, ensuring the lubrication of the pump parts and reducing the amount of refrigerant oil entering the air conditioning system pipeline through the exhaust pipe of the upper cover.

[0050] Specifically, when the movable baffle 120 is parallel to the fixed base 110, the guide flange 140 coincides with the vertical direction, and the angle between the guide flange and the vertical direction is 0. When the movable baffle 120 swings, the guide flange 140 will form an angle β with the vertical direction. Taking the point where the guide flange 140 coincides with the vertical direction as the zero point, when the second end of the movable baffle 120 is in contact with the fixed base 110, the angle between the guide flange 140 and the vertical direction is +βmax. When the first end of the guide flange 140 is in contact with the fixed base 110, the angle between the guide flange 140 and the vertical direction is -βmax.

[0051] In some embodiments of the present invention, the movable baffle 120 has a fan-shaped structure, the inner diameter of the side of the movable baffle 120 near the center of the rotor core 200 is larger than the inner diameter of the center hole of the rotor core 200, and the side of the movable baffle 120 away from the center of the rotor core 200 is consistent with the outer diameter of the rotor core 200.

[0052] In some embodiments of the present invention described above, the movable baffle 120 has a fan-shaped structure, and the outer diameter of the movable baffle 120 is the same as the outer diameter of the rotor core 200. This ensures that the guide plate will only block the air gap when the second end of the movable baffle 120 is in contact with the fixed base 110 and when the movable baffle 120 rotates parallel to the fixed base 110. The inner diameter of the side of the movable baffle 120 closest to the center of the rotor core 200 is larger than the inner diameter of the center hole of the rotor core 200, ensuring that the center hole of the rotor core 200 is not blocked.

[0053] Specifically, the fixed base 110 has a circular structure, and a central inner hole 112 is provided in the middle of the fixed base 110. The movable baffles 120 are arranged in a circular array on the fixed base 110.

[0054] The radius of the intermediate inner hole 112 is R1, the outer radius of the fixed base 110 is R4, the inner radius of the flow hole 111 is R2, the outer radius of the flow hole 111 is R3, the opening angle of the arcs on both sides of the flow hole 111 is α1, the opening angle of the center position of the two flow holes 111 is α2, and the radius of the inner arc edge of the movable baffle 120 is R5.

[0055] In some embodiments of the present invention, the central angle of the movable baffle 120 is θ, α1 < θ < α2, α1 is the opening angle of the arcs on both sides of the flow hole 111, and α2 is the opening angle between the center positions of any two adjacent flow holes 111.

[0056] In some of the embodiments of the present invention described above, the central angle of the movable baffle 120 is θ, α1<θ<α2, which ensures that the movable baffle 120 can completely cover the flow hole 111, can fully receive the impact force of the airflow from the flow hole 111, and does not cause the multiple movable baffles 120 to interfere with each other.

[0057] In some embodiments of the present invention, the thickness of the movable baffle 120 is T, where 2mm ≤ T ≤ 3mm.

[0058] In some of the embodiments of the present invention described above, the thickness T of the movable baffle 120 should ensure the necessary strength without being too heavy to affect the operation.

[0059] In some embodiments of the present invention, when the movable baffle 120 rotates to be parallel to the fixed base 110, the distance between the movable baffle 120 and the fixed base 110 is H2, which should satisfy H2=M*tanβmax, where βmax is the maximum angle between the guide flange 140 and the vertical direction at the initial or final position, and M is the distance between the center of the installation position of the elastic element 130 and the center of the rotor core 200.

[0060] In some embodiments of the present invention, βmax>arctan(L1 / H1), where: L1 is the distance from the outer diameter of the fixed base 110 to the inner wall of the compressor housing 400, and H1 is the distance from the upper end face of the fixed base 110 to the upper end face of the compressor housing 400.

[0061] In some of the embodiments of the present invention described above, in order to ensure that when the swing angle of the movable baffle 120 reaches its maximum under the worst high-frequency conditions, the airflow changed by the guide flange 140 can reach the inner wall of the compressor housing 400, βmax>arctan(L1 / H1).

[0062] In some embodiments of the present invention, in order to optimize the effect of the elastic element 130, (R4-R3) / 2+R3<M<R4-(R4-R3) / 4, the outer radius of the fixed base 110 is R4, the inner radius of the flow hole 111 is R2, and the outer radius of the flow hole 111 is R3.

[0063] Specifically, a mounting hole 115 is provided on the fixed base 110. The mounting hole 115 is used to install the elastic element 130. The center position of the mounting hole 115 should be on the circumference of (R4-R3) / 2+R3<M<R4-(R4-R3) / 4.

[0064] Furthermore, the fixed base 110 is provided with rivet holes 113, and the fixed base 110 is connected to the rotor core 200 through the rivet holes 113.

[0065] In some embodiments of the present invention, the fixed base 110 is provided with a movable baffle 120 mounting bracket 114. The mounting bracket 114 serves as a support rotation point, and its center position should be located outside the outer edge of the flow hole 111 and the middle of the outer diameter of the base, that is, on the circumference of (R4-R3) / 2+R3.

[0066] In some embodiments of the present invention, the elastic element 130 is a spring. The spring force is the key to adjusting the movable baffle 120 to rotate at different angles according to different rotation speeds, so the selection of the spring is particularly important.

[0067] Spring force formula: ; (1) k: Spring stiffness coefficient; x: The amount of compression or elongation of the spring; in this patent application, only the amount of compression is used. Spring stiffness coefficient formula: (2) G: Material stiffness modulus, commonly used for stainless steel wire, with a value of 7300; d: Diameter of spring steel wire; Dm: Mean diameter of the finished spring; Nc: Number of valid laps; The formula for the "driving force" of gas flow: (3) △P: Pressure difference; S: Area of ​​a single flow orifice 111; Pressure difference formula: (4) n: compressor speed; K: A constant related to compressor design; According to the design requirements, combine formulas (1), (2), (3), and (4). By integrating these formulas, we can obtain the required formulas for the diameter of spring steel wire and the mean diameter of the finished product: (5) Where K and G are constant coefficients, uniformly replaced by K2, thus the formula simplifies to: As can be seen from the final formula, for a given spring compression, the higher the rotational speed, the smaller the area of ​​the flow orifice 111, the thicker the steel wire required to wind into fewer turns, and the smaller the diameter of the finished product, thus placing higher demands on the spring's manufacturing process. Therefore, it is necessary to limit Nc ≥ 5 and Δx ≤ 10mm.

[0068] The present invention also provides a rotor assembly including the baffle structure 100 as described above.

[0069] The present invention also provides a compressor including the rotor assembly described above.

[0070] Example 1: The baffle structure 100 provided by the present invention includes: A fixed base 110 is disposed on the rotor core 200. The fixed base 110 has a circular ring structure. The fixed base 110 is provided with a flow passage hole 111 and a central inner hole 112. The flow passage hole 111 is provided corresponding to the vent hole on the rotor core 200, and the central inner hole 112 is provided corresponding to the central hole of the rotor core 200. Movable baffles 120 are arranged in a ring array on the fixed base 110. The movable baffles 120 are arranged above the flow holes 111, and the middle part of the movable baffles 120 is rotatably arranged on the fixed base 110 so that the movable baffles 120 can swing radially along the rotor core 200. An elastic element 130 is disposed between the movable baffle 120 and the fixed base 110. Gas flow in the flow hole 111 can drive the movable baffle 120 to overcome the elastic force of the elastic element 130 and change the swing angle of the movable baffle 120 on the fixed base 110 so that the movable baffle 120 can switch between a first state and a second state. When the movable baffle 120 is in the first state, at least a portion of the movable baffle 120 overlaps with the air gap between the rotor core 200 and the stator core in the vertical direction; when the movable baffle 120 is in the second state, the movable baffle 120 does not overlap with the air gap between the rotor core 200 and the stator core in the vertical direction.

[0071] Furthermore, a guide flange 140 is provided on the side of the movable baffle 120 away from the center of the rotor core 200. The guide flange 140 extends toward the side away from the rotor core 200 and is perpendicular to the movable baffle 120. When the movable baffle 120 swings to the first state, the guide flange 140 has at least a partially overlapping area with the air gap between the rotor core 200 and the stator core in the vertical direction; when the movable baffle 120 swings to the second state, the guide flange 140 does not have an overlapping area with the air gap between the rotor core 200 and the stator core in the vertical direction.

[0072] Furthermore, the movable baffle 120 has a fan-shaped structure, with the inner diameter of the side of the movable baffle 120 closest to the rotor core 200 being larger than the inner diameter of the rotor core 200, and the side of the movable baffle 120 furthest from the center of the rotor core 200 having the same outer diameter as the rotor core 200.

[0073] Specifically, the radius of the intermediate inner hole 112 is R1, the outer radius of the fixed base 110 is R4, the inner radius of the flow hole 111 is R2, the outer radius of the flow hole 111 is R3, the opening angle of the arcs on both sides of the flow hole 111 is α1, the opening angle between the centers of the two flow holes 111 is α2, and the radius of the inner arc edge of the movable baffle 120 is R5.

[0074] Where R1 < R5 < R2, the installation position of the movable baffle 120 should be located outside the outer edge of the flow hole 111 and the middle of the outer diameter of the fixed base 110, that is, on the circumference of (R4-R3) / 2+R3; in order to achieve the best effect of the elastic element 130, the center position of the installation position of the elastic element 130 should be on the circumference of (R4-R3) / 2+R3 < M < R4-(R4-R3) / 4.

[0075] The elastic element is a spring, and the required formulas for the spring wire diameter and the finished product's mean diameter are as follows: , in: △x: The compression of the spring, △x≤10mm; d: Diameter of spring steel wire; Dm: Mean diameter of the finished spring; Nc: Effective number of spring coils, Nc≥5; S: Area of ​​a single flow orifice; n: compressor speed; K2: Coefficient constant.

[0076] The present invention also provides a rotor assembly, including a rotor core 200 and a baffle structure 100 as described above.

[0077] The present invention also provides a compressor, including a compressor housing 400, a stator assembly 300 and a rotor assembly as described above.

[0078] In the description of this specification, references to terms such as "example," "embodiment," or "some embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0079] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A baffle structure, characterized in that, include: A fixed base is mounted on the rotor core, and the fixed base is provided with flow holes; A movable baffle is disposed above the flow hole, and the middle part of the movable baffle is rotatably disposed on the fixed base so that the movable baffle can swing radially along the rotor core. The gas flow within the flow hole can drive the movable baffle to swing, so that the movable baffle can switch between a first state and a second state. When the movable baffle is in the first state, at least a portion of the movable baffle overlaps with the air gap between the rotor core and the stator core in the vertical direction; when the movable baffle is in the second state, the movable baffle does not overlap with the air gap between the rotor core and the stator core in the vertical direction.

2. The baffle structure according to claim 1, characterized in that, It also includes elastic components; The elastic element is disposed between the movable baffle and the fixed base. The gas flow in the flow hole can drive the movable baffle to overcome the elastic force of the elastic element and change the swing angle of the movable baffle on the fixed base, so that the movable baffle can switch between the first state and the second state.

3. The baffle structure according to claim 2, characterized in that, A guide flange is provided on the side of the movable baffle away from the center of the rotor core, and the guide flange extends toward the side away from the rotor core. When the movable baffle swings to the first state, the guide flange at least partially overlaps with the air gap between the rotor core and the stator core in the vertical direction; when the movable baffle swings to the second state, the guide flange does not overlap with the air gap between the rotor core and the stator core in the vertical direction.

4. The baffle structure according to claim 3, characterized in that, The guide flange is perpendicular to the movable baffle.

5. The baffle structure according to claim 3, characterized in that, The movable baffle has a fan-shaped structure. The inner diameter of the side of the movable baffle closer to the center of the rotor core is larger than the inner diameter of the rotor core, while the side of the movable baffle farther from the center of the rotor core has the same outer diameter as the rotor core.

6. The baffle structure according to claim 5, characterized in that, The central angle of the movable baffle is θ, α1 < θ < α2, where α1 is the opening angle of the arcs on both sides of the flow hole, and α2 is the opening angle between the center positions of any two adjacent flow holes.

7. The baffle structure according to claim 3, characterized in that, The thickness of the movable baffle is T, where 2mm ≤ T ≤ 3mm.

8. The baffle structure according to claim 3, characterized in that, When the movable baffle rotates to be parallel to the fixed base, the distance between the movable baffle and the fixed base is H2, which should satisfy H2=M*tanβmax, where βmax is the maximum angle between the guide flange and the vertical direction at the initial or final position, and M is the distance between the center of the elastic element installation position and the center of the rotor core.

9. The baffle structure according to claim 8, characterized in that, βmax>arctan(L1 / H1), where: L1 is the distance from the outer diameter of the fixed base to the inner wall of the compressor housing, and H1 is the distance from the upper end face of the fixed base to the upper end face of the compressor housing.

10. The baffle structure according to claim 8, characterized in that, (R4-R3) / 2+R3<M<R4-(R4-R3) / 4, where the outer radius of the fixed base is R4, the inner radius of the flow hole is R2, and the outer radius of the flow hole is R3.

11. The baffle structure according to claim 2, characterized in that, The elastic element is a spring, and the required formulas for the spring wire diameter and the finished product's mean diameter are as follows: ， in: △x: The compression of the spring, △x≤10mm; d: Diameter of spring steel wire; Dm: Mean diameter of the finished spring; Nc: Effective number of spring coils, Nc≥5; S: Area of ​​a single flow orifice; n: compressor speed; K2: Coefficient constant.

12. The baffle structure according to claim 1, characterized in that, The fixed base is a circular structure with a central inner hole in the middle, and the movable baffles are arranged in a circular array on the fixed base.

13. The baffle structure according to claim 1, characterized in that, The fixed base is provided with rivet holes, and the fixed base is connected to the rotor core through the rivet holes.

14. A rotor assembly, characterized in that, Includes the baffle structure as described in any one of claims 1-13.

15. A compressor, characterized in that, Includes the rotor assembly as described in claim 14.

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