Baffle structure, rotor assembly and compressor

Abstract

The invention provides a baffle structure, a rotor assembly and a compressor, relates to the technical field of compressors, and solves the technical problem that in the prior art, mixed fluid of refrigerant oil and a refrigerant is easily discharged out of the compressor through an air gap channel, so that the oil spitting rate of the compressor exceeds the standard. The baffle structure, the rotor assembly and the compressor comprise a fixed base which is arranged on a rotor iron core, and a through-flow hole is formed in the fixed base; and the movable baffle plate is arranged above the through-flow hole, and the middle part of the movable baffle plate is rotatably arranged on the fixed base, so that the movable baffle plate can swing along the radial direction of the rotor iron core. According to the baffle structure, the rotor assembly and the compressor, the oil spitting rate is reduced, the oil level in the compressor is guaranteed, the lubricating effect is ensured, and the heat exchange efficiency, the air conditioner energy efficiency and the operation reliability are further improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of compressors, in particular to a baffle structure, a rotor assembly and a compressor. BACKGROUND

[0002] With the increasing requirements of air conditioning systems for energy efficiency ratio and compact design, compressors are developing towards miniaturization and high power density. Under the same refrigeration output conditions, the volume of the compressor continues to decrease, while the amount of refrigerant required for system circulation and the amount of refrigeration oil required for internal lubrication increase accordingly, resulting in a significant increase in the density of the fluid in the machine.

[0003] In current compressor structures, there is always an air gap channel between the motor rotor and the stator. In a high-density fluid environment, the mixed fluid of refrigeration oil and refrigerant is prone to migrate upward through the motor air gap and balance hole gap paths under the action of pressure pulsation when the compressor is running, and eventually reaches the compressor upper cover through the motor upper cavity, and is discharged from the exhaust pipe. This phenomenon is positively correlated with the operating frequency of the compressor: the higher the speed, the faster the suction and exhaust frequency, the greater the fluid kinetic energy, and the more significant the migration of the oil-refrigerant mixture.

[0004] And this phenomenon, due to the large amount of refrigeration oil entering the air conditioning system pipeline with air, the oil level in the compressor decreases, which can easily lead to problems such as excessive oil discharge rate, lubrication failure, heat exchange efficiency decrease, energy efficiency decay, and reliability risk. SUMMARY

[0005] The purpose of the present application is to provide a baffle structure, a rotor assembly and a compressor to solve the technical problem that the mixed fluid of refrigeration oil and refrigerant is prone to be discharged from the compressor through the air gap channel, resulting in excessive oil discharge rate of the compressor. The preferred technical solutions in the many technical solutions provided by the present application can produce many technical effects, which are described in detail below.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions: The baffle structure provided by the present application comprises: A fixed base is arranged on the rotor core, and a through-flow hole is arranged on the fixed base; An active baffle is arranged above the through-flow hole, and the middle part of the active baffle is rotatably arranged on the fixed base, so that the active baffle can swing radially along the rotor core; The gas flow in the through-flow hole can drive the active baffle to swing, so that the active baffle can be switched between a first state and a second state; The movable baffle has a coinciding area with the air gap between the rotor core and the stator core in a vertical direction when the movable baffle is in the first state; and the movable baffle has no coinciding area with the air gap between the rotor core and the stator core in a vertical direction when the movable baffle is in the second state.

[0007] As an optional implementation, the device further comprises an elastic member. The elastic member is arranged between the movable baffle and the fixed base, and the gas flow in the through-flow hole can drive the movable baffle to overcome the elastic force of the elastic member, change the swing angle of the movable baffle on the fixed base, and enable the movable baffle to switch between the first state and the second state.

[0008] As an optional implementation, a guide flange is arranged on the side of the movable baffle away from the center of the rotor core, and the guide flange extends away from the rotor core. The guide flange has a coinciding area with the air gap between the rotor core and the stator core in a vertical direction when the movable baffle swings to the first state; and the guide flange has no coinciding area with the air gap between the rotor core and the stator core in a vertical direction when the movable baffle swings to the second state.

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

[0010] As an optional implementation, the movable baffle has a fan-shaped structure, the inner diameter of the side of the movable baffle close to the rotor core is greater than the inner diameter of the rotor core, and the outer diameter of the side of the movable baffle away from the center of the rotor core is consistent with the outer diameter of the rotor core.

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

[0012] As an optional implementation, the thickness of the movable baffle is T, and 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, and H2=M*tanβmax should be satisfied, where βmax is the maximum value of the angle between the guide flange and the vertical direction at the initial position or the terminal position, and M is the distance between the installation position of the elastic member and the center of the rotor core.

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

[0015] As an optional embodiment, (R4-R3) / 2+R3

[0016] As an optional embodiment, the elastic member is a spring, and the diameter of the spring wire and the finished product diameter requirement formula is: , Wherein: △x: the compression amount of the spring, △x≤10mm; d: the diameter of the spring wire; Dm: the finished product diameter of the spring; Nc: the effective number of turns of the spring, Nc≥5; S: the area of a single flow hole; n: the speed of the compressor; K2: coefficient constant.

[0017] As an optional embodiment, the fixed base is a circular ring structure, an intermediate inner hole is arranged in the middle of the fixed base, and the movable baffle is arranged in an annular array on the fixed base.

[0018] As an optional embodiment, a rivet hole is arranged on the fixed base, and the fixed base is connected with the rotor core through the rivet hole.

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

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

[0021] The beneficial effects of the present application are: the baffle structure, the rotor assembly and the compressor provided by the present application, comprising a fixed base and a movable baffle, the fixed base is arranged on the rotor core, the fixed base is provided with a flow-through hole, the flow-through hole is arranged corresponding to the air hole on the rotor core; the movable baffle is arranged above the flow-through hole, the movable baffle can separate the lubricating oil in the airflow in the flow-through hole, avoid the lubricating oil from being discharged from the compressor, and reduce the oil discharge rate; and the middle part of the movable baffle is rotatably arranged on the fixed base, so that the movable baffle can swing along the radial direction of the rotor core, the gas flow in the flow-through hole can drive the movable baffle to swing, so that the movable baffle can be switched between the first state and the second state; when the movable baffle is in the first state, the movable baffle at least partially 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 direction change of the mixed gas of the refrigeration oil and the refrigerant between the stator and the rotor, promote the separation of the refrigeration oil and the refrigerant, reduce the discharge of the refrigeration oil from the compressor, reduce the oil discharge rate, ensure the oil level in the compressor, ensure the lubrication effect, and further improve the heat exchange efficiency, the air conditioner energy efficiency and the operation 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 has no resistance, and the operation effect of the compressor is optimized. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0023] Figure 1 is a partial structure schematic diagram of the compressor of the present application; Figure 2 is a partial structure sectional view of the compressor of the present application; Figure 3 is a partial structure top view of the compressor of the present application; Figure 4 is a structure schematic diagram of the baffle structure of the present application installed on the rotor core; Figure 5 is a front view of the baffle structure of the present application; Figure 6 is a side view of the baffle structure of the present application; Figure 7 is a structure schematic diagram of the fixed base of the present application; Figure 8is the front view of the fixed base of the application; Figure 9 is the structural schematic diagram of the rotor core of the application; Figure 10 is the structural schematic diagram of the movable baffle of the application (one); Figure 11 is the structural schematic diagram of the movable baffle of the application (two); Figure 12 is the front view of the movable baffle of the application; Figure 13 is the side view of the movable baffle of the application; Figure 14 is the use state diagram of the baffle structure of the application (one); Figure 15 is the use state diagram of the baffle structure of the application (two); Figure 16 is the use state diagram of the baffle structure of the application (three); Figure 17 is the use state diagram of the baffle structure of the application (four); Figure 18 is the use state diagram of the baffle structure of the application (five); Figure 19 is the simulation diagram of the oil content of the embodiment 1 of the application.

[0024] In the figure: 100, baffle structure; 200, rotor core; 300, stator assembly; 400, compressor shell; 110, fixed base; 120, movable baffle; 130, elastic member; 140, guide flange; 111, through-flow hole; 112, intermediate inner hole; 113, rivet hole; 114, mounting frame; 115, mounting hole. DETAILED DESCRIPTION

[0025] The following can be referred to the drawings Figures 1-19This 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 1-19The 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 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.

[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 by, The utility model relates to a kind of movable baffle and fixed base for compressor, including: Fixed base is arranged on rotor core, and the fixed base is provided with flow hole; Movable baffle is arranged above the flow hole, and the middle part of the movable baffle is rotationally arranged on the fixed base, so that the movable baffle can swing along the radial direction of the rotor core; Gas flow in the flow hole can drive the movable baffle to swing, so that the movable baffle can be switched between the first state and the second state; When the movable baffle is in the first state, the movable baffle at least partially 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 of claim 1, wherein It also includes elastic member; The elastic member is arranged between the movable baffle and the fixed base, and the gas flow in the flow hole can drive the movable baffle to overcome the elastic force of the elastic member, change the swing angle of the movable baffle on the fixed base, so that the movable baffle can be switched between the first state and the second state.

3. The baffle structure of claim 2, wherein The side of the movable baffle away from the center of the rotor core is provided with a guide flange, and the guide flange extends 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 of claim 3, wherein The guide flange is arranged vertically to the movable baffle.

5. The baffle structure of claim 3, wherein The movable baffle is in the shape of a sector, the inner diameter of the side of the movable baffle close to the rotor core is greater than the inner diameter of the rotor core, and the outer diameter of the side of the movable baffle away from the center of the rotor core is consistent with the outer diameter of the rotor core.

6. The baffle structure of claim 5, wherein The central angle of the movable baffle is θ, and α1 < θ < α2, where α1 is the opening angle of the circular arc on both sides of the flow hole, and α2 is the opening angle of the center position between any two adjacent flow holes.

7. The baffle structure of claim 3, wherein The thickness of the movable baffle is T, and 2mm ≤ T ≤ 3mm.

8. The baffle structure of claim 3, wherein When the movable baffle is 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 value of the angle between the guide flange and the vertical direction at the initial position or the terminal position, and M is the distance from the installation position center of the elastic member to the center of the rotor core.

9. The baffle structure of claim 8, wherein βmax > arctan(L1 / H1), where L1 is the distance from the outer diameter of the fixed base to the inner wall of the compressor shell, and H1 is the distance from the upper end surface of the fixed base to the upper end surface of the compressor shell.

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

11. The baffle structure of claim 2, wherein The elastic member is a spring, and the diameter of the spring wire and the finished product diameter requirement formula is: ， where: △x: the compression amount of the spring, △x ≤ 10mm; d: spring wire diameter; Dm: spring finished diameter; Nc: spring effective number of turns, Nc≥5; S: single flow hole area; n: compressor speed; K2: coefficient constant.

12. The baffle structure of claim 1, wherein The fixed base is a circular ring structure, and an intermediate inner hole is arranged in the middle of the fixed base.

13. The baffle structure of claim 1, wherein A rivet hole is arranged on the fixed base, and the fixed base is connected with the rotor core through the rivet hole.

14. A rotor assembly characterized by, The rotor assembly comprises the baffle structure as claimed in any one of claims 1-13.

15. A compressor characterized by, The rotor assembly comprises the baffle structure as claimed in any one of claims 1-13.

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