A rotor assembly, electric machine and compressor

Abstract

The utility model relates to a rotor assembly, motor and compressor, rotor assembly includes rotor core, one end surface of rotor core coaxially connects annular end plate, the end surface of end plate away from rotor core is connected with balance weight, oil baffle, balance weight is arc block, the oil baffle includes the side baffle of interconnection, cover plate, the side baffle perpendicularly sets up on the outer circumference of end plate, the cover plate is arc plate, the cover plate is parallel with end plate, and the circumference direction both ends of cover plate are provided with recess respectively, the circumference direction both ends of balance weight are respectively with two recesses of cover plate abut respectively. The utility model discloses a rotor assembly, through the ingenious cooperation between balance weight and oil baffle, can promote the sedimentation efficiency of refrigeration oil under the condition of not affecting gaseous refrigerant to pass smoothly, improves the problem of compressor oil to spit, improves the performance and reliability of compressor.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, and in particular to a rotor assembly, a motor and a compressor. Background Technology

[0002] A compressor typically consists of a housing, a motor fixed inside the housing that provides rotational power, and a pump body for compressing the refrigerant. During motor operation, the unbalanced forces and torques generated by the eccentric rotation of the rotor intensify compressor vibration. Therefore, to reduce the adverse effects of unbalanced forces, arc-shaped balance weights are usually added to the upper and lower end faces of the rotor to reduce these forces. When the rotor rotates, the balance weights impact the high-pressure, high-speed refrigerant discharged from the compression chamber, creating strong turbulence and causing a loss of rotor kinetic energy. Furthermore, the deteriorated airflow field inside the compressor housing makes it easier for larger oil droplets to break, resulting in refrigerant oil easily being discharged from the compressor with the exhaust gas. This leads to oil loss inside the compressor, deterioration of the sealing of the compression structure, and reduced compressor performance and reliability. Utility Model Content

[0003] Based on this, the purpose of this utility model is to overcome the shortcomings of the prior art and provide a rotor assembly, motor and compressor. Through the ingenious cooperation between the balance block and the oil baffle, the settling efficiency of the refrigeration oil can be promoted without affecting the smooth passage of gaseous refrigerant, thereby improving the problem of compressor oil discharge and enhancing the performance and reliability of the compressor.

[0004] To achieve the above objectives, the first aspect of this utility model provides a rotor assembly, including a rotor core. One end face of the rotor core is coaxially connected to an annular end plate. A balance block and an oil baffle are connected to the end face of the end plate away from the rotor core. The balance block is an arc-shaped block. The oil baffle includes a side baffle and a cover plate connected to each other. The side baffle is vertically disposed on the outer periphery of the end plate. The cover plate is an arc-shaped plate, parallel to the end plate, and has notches at both ends in the circumferential direction. The two ends in the circumferential direction of the balance block abut against the two notches of the cover plate.

[0005] Therefore, according to the rotor assembly of this utility model, by setting a balance block on the end face of the rotor core to compensate for the eccentric torque caused by the rotor core, and by setting an oil baffle on the end plate, the cover plate of the oil baffle and the balance block form an abutment in the circumferential direction, and the side baffle of the oil baffle and the balance block itself form an oil-blocking structure in the radial direction, the shielding and impact area of ​​the refrigeration oil in the refrigerant is increased, effectively improving the separation efficiency of refrigeration oil and gaseous refrigerant, thereby effectively reducing the discharge of refrigeration oil and improving the refrigeration oil backflow effect; thus, through the ingenious cooperation between the balance block and the oil baffle, this utility model can promote the settling efficiency of refrigeration oil, improve the problem of compressor oil discharge, and improve the performance and reliability of the compressor.

[0006] In one embodiment, the side baffle is an arc-shaped plate, which is integrally formed on the outer periphery of the end plate. The cover plate is integrally formed with the side baffle, and the cover plate is vertically disposed on the side of the side baffle away from the end plate.

[0007] In one embodiment, the width of the cover plate in the radial direction is less than or equal to the width of the end plate in the radial direction.

[0008] In one embodiment, the length of the balance block in the axial direction is greater than the length of the oil baffle in the axial direction.

[0009] In one embodiment, both ends of the balance block in the circumferential direction are arc-shaped, and both recesses of the cover plate are arc-shaped.

[0010] In one embodiment, the oil baffle, the balance block, and the end plate together form an arc-shaped cavity with an inner opening.

[0011] In one embodiment, a plurality of flow dividers are connected between the cover plate and the end plate, and the plurality of flow dividers are spaced apart in the arc-shaped cavity and divide the arc-shaped cavity into a plurality of flow channels.

[0012] In one embodiment, an opening communicating with the diversion channel is provided through the connection between the side baffle and the cover plate.

[0013] A second aspect of this invention provides an electric motor comprising the rotor assembly described in any of the preceding claims. According to this invention, the motor, through the ingenious cooperation between the balance block and the oil baffle, can promote the settling efficiency of refrigeration oil without affecting the smooth flow of gaseous refrigerant, thereby improving the problem of compressor oil discharge and enhancing the performance and reliability of the compressor.

[0014] A third aspect of this utility model provides a compressor comprising the motor described in any of the preceding claims. According to this utility model, the compressor, through the ingenious cooperation between the balance block and the oil baffle, can promote the settling efficiency of the refrigeration oil without affecting the smooth flow of gaseous refrigerant, thereby improving the problem of compressor oil discharge and enhancing the performance and reliability of the compressor.

[0015] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is one of the structural schematic diagrams of the rotor assembly according to an embodiment of the present utility model; Figure 2 This is a second schematic diagram of the rotor assembly according to an embodiment of the present utility model; Figure 3 This is one of the exploded schematic diagrams of the rotor assembly according to an embodiment of the present utility model; Figure 4 This is one of the structural schematic diagrams of the oil baffle and end plate in an embodiment of this utility model; Figure 5 This is the second schematic diagram of the structure of the oil baffle and end plate in this embodiment of the present utility model; Figure 6 This is the third schematic diagram of the rotor assembly according to an embodiment of the present utility model; Figure 7 This is the second exploded view of the rotor assembly according to an embodiment of the present utility model; Figure 8 This is the third schematic diagram of the structure of the oil baffle and end plate in this embodiment of the present utility model; Figure 9 This is the fourth schematic diagram of the structure of the oil baffle and end plate in an embodiment of this utility model.

[0017] Explanation of reference numerals in the attached drawings: 10, rotor core; 20, end plate; 21, surrounding plate; 30, oil baffle; 31, side baffle; 32, cover plate; 33, notch; 34, diverter plate; 35, opening; 40, balance block. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0020] In the following description, when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims. In the description of this application, it should be understood that the terms "first," "second," "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0021] In related technologies, a compressor generally consists of a housing, a motor fixed inside the housing that provides rotational power, and a pump body for compressing the refrigerant. During motor operation, the unbalanced force and torque generated by the eccentric rotation of the rotor intensifies compressor vibration. Therefore, to reduce the adverse effects of unbalanced forces, arc-shaped balance blocks are usually added to the upper and lower end faces of the rotor to reduce these forces. When the rotor rotates, the balance blocks impact the high-pressure, high-speed refrigerant discharged from the compression chamber, creating strong turbulence and causing a loss of rotor kinetic energy. Furthermore, the deterioration of the airflow field inside the compressor housing makes it easier for large oil droplets to rupture, resulting in the refrigerant oil inside the compressor being easily discharged with the exhaust gas. This leads to oil loss inside the compressor, deterioration of the sealing of the compression structure, and reduced compressor performance and reliability.

[0022] In view of this, the present invention provides a rotor assembly, a motor, and a compressor. According to the rotor assembly, motor, and compressor of the present invention, through the ingenious cooperation between the balance block and the oil baffle, the settling efficiency of the refrigeration oil can be promoted without affecting the smooth passage of gaseous refrigerant, thus improving the problem of compressor oil discharge and enhancing the performance and reliability of the compressor.

[0023] Please see Figures 1 to 9The first aspect of this utility model provides a rotor assembly, including a rotor core 10. An annular end plate 20 is coaxially connected to one end face of the rotor core 10. A balance block 40 and an oil baffle plate 30 are connected to the end face of the end plate 20 away from the rotor core 10. The balance block 40 is an arc-shaped block. The oil baffle plate 30 includes a side baffle 31 and a cover plate 32 connected to each other. The side baffle 31 is vertically disposed on the outer periphery of the end plate 20. The cover plate 32 is an arc-shaped plate, parallel to the end plate 20, and has notches 33 at both ends of its circumferential direction. The two ends of the balance block 40 abut against the two notches 33 of the cover plate 32. The end plate 20 and the balance block 40 can be fixed to the rotor core 10 by rivets.

[0024] Specifically, in this embodiment of the invention, the side baffle 31 is an arc-shaped plate, integrally formed on the outer periphery of the end plate 20. The cover plate 32 is integrally formed with the side baffle 31, and the cover plate 32 is vertically disposed on the side of the side baffle 31 away from the end plate 20. It can be understood that the oil baffle 30 and the end plate 20 in this embodiment of the invention are integrally formed structures. In the axial direction projection, the oil baffle 30 and the balance block 40 together form a circular structure, and the outer diameter of the balance block 40 is smaller than the outer diameter of the oil baffle 30. Furthermore, a passage for refrigerant to pass through is provided axially on the rotor core 10, and the projections of the end plate 20, the oil baffle 30, and the balance block 40 in the axial direction do not cover the passage, ensuring that the refrigerant can pass smoothly through the rotor core 10.

[0025] Therefore, according to the rotor assembly of this utility model, by setting a balance block 40 on the end face of the rotor core 10 to compensate for the eccentric torque caused by the rotor core 10, and by setting an oil baffle plate 30 on the end plate 20, the cover plate 32 of the oil baffle plate 30 abuts against the balance block 40 in the circumferential direction, and the side baffle plate 31 of the oil baffle plate 30 and the balance block 40 itself form an oil baffle structure in the radial direction, thereby increasing the shielding and impact area of ​​the refrigeration oil in the refrigerant, effectively improving the separation efficiency of the refrigeration oil and the gaseous refrigerant, thereby effectively reducing the discharge of refrigeration oil and improving the refrigeration oil backflow effect; thus, through the ingenious cooperation between the balance block 40 and the oil baffle plate 30, this utility model can promote the settling efficiency of refrigeration oil, improve the problem of compressor oil discharge, and improve the performance and reliability of the compressor.

[0026] Optionally, in some embodiments of this invention, the width of the cover plate 32 in the radial direction is less than or equal to the width of the end plate 20 in the radial direction. This can be understood as the entire projection of the cover plate 32 in the axial direction falling onto the end plate 20 in these embodiments.

[0027] Optionally, in some embodiments of this invention, the length of the balance block 40 in the axial direction is greater than the length of the oil baffle 30 in the axial direction. This can be understood as the balance block 40 protruding more than the cover plate 32 in the axial direction in these embodiments.

[0028] Optionally, in some embodiments of this utility model, both ends of the circumferential direction of the balance block 40 are arc-shaped, and both recesses 33 of the cover plate 32 are arc-shaped. It can be understood that in these embodiments, the arc-shaped design makes it easier for the balance block 40 and the cover plate 32 to abut against each other.

[0029] Optionally, in some embodiments of this utility model, the oil baffle 30, the balance block 40, and the end plate 20 together form an arc-shaped cavity with an inner opening 35. In these embodiments, a plurality of flow dividers 34 are connected between the cover plate 32 and the end plate 20, and the flow dividers 34 are spaced apart in the arc-shaped cavity, dividing the arc-shaped cavity into a plurality of flow channels. Furthermore, in these embodiments, an opening 35 communicating with the flow channels is provided at the connection between the side baffle 31 and the cover plate 32. It can be understood that in these embodiments, the arc-shaped cavity can be divided into a plurality of flow channels by the flow dividers 34, and an opening 35 is provided in each flow channel, which can increase the impact area of ​​the refrigeration oil while ensuring the smooth passage of gaseous refrigerant, thereby effectively improving the settling effect of the refrigeration oil.

[0030] The following is combined with Figures 1 to 5 The following is a detailed description of a specific embodiment of the rotor assembly according to the present invention. It is worth understanding that the following is merely an illustrative description and should not be construed as limiting the present invention.

[0031] This embodiment provides a rotor assembly, including a rotor core 10. An annular end plate 20 is coaxially connected to the end face of the rotor core 10 facing the pump body structure. A balance block 40 and an oil baffle plate 30 are connected to the end face of the end plate 20 away from the rotor core 10. The balance block 40 is an arc-shaped block. The oil baffle plate 30 includes a side baffle 31 and a cover plate 32 connected to each other. The side baffle 31 is vertically arranged on the outer periphery of the end plate 20. The cover plate 32 is an arc-shaped plate and is parallel to the end plate 20. The two ends of the cover plate 32 in the circumferential direction are respectively provided with notches 33. The two ends of the balance block 40 in the circumferential direction abut against the two notches 33 of the cover plate 32 respectively.

[0032] Specifically, in this embodiment, the side baffle 31 is an arc-shaped plate, integrally formed on the outer periphery of the end plate 20. The cover plate 32 is integrally formed with the side baffle 31, and the cover plate 32 is vertically disposed on the side of the side baffle 31 away from the end plate 20. It can be understood that in this embodiment, the oil baffle 30 and the end plate 20 are integrally formed structures. In the axial direction projection, the oil baffle 30 and the balance block 40 together form a circular structure, and the outer diameter of the balance block 40 is smaller than the outer diameter of the oil baffle 30. Furthermore, a passage for refrigerant to pass through is provided axially on the rotor core 10, and the projections of the end plate 20, the oil baffle 30, and the balance block 40 in the axial direction do not cover the passage, ensuring that the refrigerant can pass smoothly through the rotor core 10.

[0033] Furthermore, in this embodiment, the width of the cover plate 32 in the radial direction is equal to the width of the end plate 20 in the radial direction; the length of the balance block 40 in the axial direction is greater than the length of the oil baffle 30 in the axial direction. In addition, both ends of the balance block 40 in the circumferential direction are arc-shaped, and both recesses 33 of the cover plate 32 are arc-shaped.

[0034] In addition, in this embodiment, an annular end plate 20 is provided on the end face of the rotor core 10 away from the pump body structure, and a balance block 40 is provided on the end face of the end plate 20 away from the rotor core 10. Furthermore, a cylindrical surrounding plate 21 extends from the outer periphery of the end plate 20, and the surrounding plate is located outside the balance block 40.

[0035] Therefore, during operation, the rotor assembly of this embodiment can compensate for the eccentric torque caused by the rotor core 10 through the balance block 40. Furthermore, by providing an oil baffle 30 on the end plate 20, the cover plate 32 of the oil baffle 30 forms abutment with the balance block 40 in the circumferential direction, and the side baffle 31 of the oil baffle 30 and the balance block 40 itself form an oil-blocking structure in the radial direction. This increases the shielding and impact area of ​​the refrigerant oil in the refrigerant, effectively improving the separation efficiency between the refrigerant oil and the gaseous refrigerant, thereby effectively reducing the discharge of refrigerant oil and improving the refrigerant oil reflux effect. Thus, through the ingenious cooperation between the balance block 40 and the oil baffle 30, this invention can promote the settling efficiency of the refrigerant oil, improve the problem of compressor oil discharge, and enhance the performance and reliability of the compressor.

[0036] The following is combined with Figures 6 to 9 The following is a detailed description of a specific embodiment of the rotor assembly according to the present invention. It is worth understanding that the following is merely an illustrative description and should not be construed as limiting the present invention.

[0037] This embodiment provides a rotor assembly, including a rotor core 10. An annular end plate 20 is coaxially connected to the end face of the rotor core 10 facing the pump body structure. A balance block 40 and an oil baffle plate 30 are connected to the end face of the end plate 20 away from the rotor core 10. The balance block 40 is an arc-shaped block. The oil baffle plate 30 includes a side baffle 31 and a cover plate 32 connected to each other. The side baffle 31 is vertically arranged on the outer periphery of the end plate 20. The cover plate 32 is an arc-shaped plate and is parallel to the end plate 20. The two ends of the cover plate 32 in the circumferential direction are respectively provided with notches 33. The two ends of the balance block 40 in the circumferential direction abut against the two notches 33 of the cover plate 32 respectively. In addition, in this embodiment, an annular end plate 20 is provided on the end face of the rotor core 10 away from the pump body structure, and a balance block 40 is provided on the end face of the end plate 20 away from the rotor core 10. Furthermore, a cylindrical surrounding plate 21 extends from the outer periphery of the end plate 20, and the surrounding plate 21 is located outside the balance block 40.

[0038] In this embodiment, the side baffle 31 is an arc-shaped plate, integrally formed on the outer periphery of the end plate 20. The cover plate 32 is integrally formed with the side baffle 31, and the cover plate 32 is vertically disposed on the side of the side baffle 31 away from the end plate 20. It can be understood that in this embodiment, the oil baffle 30 and the end plate 20 are integrally formed structures. In the axial direction projection, the oil baffle 30 and the balance block 40 together form a circular structure, and the outer diameter of the balance block 40 is smaller than the outer diameter of the oil baffle 30. Furthermore, a passage for refrigerant to pass through is provided axially on the rotor core 10, and the projections of the end plate 20, the oil baffle 30, and the balance block 40 in the axial direction do not cover the passage, ensuring that the refrigerant can pass smoothly through the rotor core 10.

[0039] Specifically, in this embodiment, the width of the cover plate 32 in the radial direction is equal to the width of the end plate 20 in the radial direction; the length of the balance block 40 in the axial direction is greater than the length of the oil baffle 30 in the axial direction. In addition, both ends of the balance block 40 in the circumferential direction are arc-shaped, and both recesses 33 of the cover plate 32 are arc-shaped.

[0040] Furthermore, in this embodiment, the oil baffle 30, the balance block 40, and the end plate 20 together form an arc-shaped cavity with an inner opening 35. In these embodiments, a plurality of flow dividers 34 connect the cover plate 32 and the end plate 20. These flow dividers 34 are spaced apart within the arc-shaped cavity, dividing it into several flow channels. An opening 35 connecting the flow channels is provided at the connection between the side baffle 31 and the cover plate 32. It can be understood that in this embodiment, the flow dividers 34 divide the arc-shaped cavity into several flow channels, and each flow channel has an opening 35. This increases the impact area of ​​the refrigeration oil while ensuring the smooth passage of gaseous refrigerant, thereby effectively improving the settling effect of the refrigeration oil.

[0041] The second aspect of this utility model provides an electric motor, which includes the rotor assembly of any of the above. According to the electric motor of this utility model, through the ingenious cooperation between the balance block 40 and the oil baffle 30, the settling efficiency of the refrigeration oil can be promoted without affecting the smooth passage of gaseous refrigerant, thus improving the problem of compressor oil discharge and enhancing the performance and reliability of the compressor.

[0042] The third aspect of this utility model provides a compressor that includes the motor described in any of the above-mentioned embodiments. According to the compressor of this utility model, through the ingenious cooperation between the balance block 40 and the oil baffle 30, the settling efficiency of the refrigeration oil can be promoted without affecting the smooth passage of gaseous refrigerant, thus improving the problem of compressor oil discharge and enhancing the performance and reliability of the compressor.

[0043] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the rotor assembly, motor, and compressor of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A rotor assembly, characterized in that: The device includes a rotor core, one end face of which is coaxially connected to an annular end plate. A balance block and an oil baffle are connected to the end face of the end plate away from the rotor core. The balance block is an arc-shaped block. The oil baffle includes a side baffle and a cover plate connected to each other. The side baffle is vertically disposed on the outer periphery of the end plate. The cover plate is an arc-shaped plate, parallel to the end plate, and has notches at both ends of its circumferential direction. The two ends of the balance block abut against the two notches of the cover plate.

2. The rotor assembly according to claim 1, characterized in that: The side baffle is an arc-shaped plate, which is integrally formed on the outer periphery of the end plate. The cover plate is integrally formed with the side baffle, and the cover plate is vertically arranged on the side of the side baffle away from the end plate.

3. The rotor assembly according to claim 2, characterized in that: The width of the cover plate in the radial direction is less than or equal to the width of the end plate in the radial direction.

4. The rotor assembly according to claim 2, characterized in that: The length of the balance block in the axial direction is greater than the length of the oil baffle in the axial direction.

5. The rotor assembly according to claim 1, characterized in that: Both ends of the balance block in the circumferential direction are arc ends, and both notches of the cover plate are arc-shaped.

6. The rotor assembly according to claim 2, characterized in that: The oil baffle, the balance block, and the end plate together form an arc-shaped cavity with an inner opening.

7. The rotor assembly according to claim 6, characterized in that: A plurality of flow dividers are connected between the cover plate and the end plate, and the plurality of flow dividers are spaced apart in the arc-shaped cavity and divide the arc-shaped cavity into a plurality of flow channels.

8. The rotor assembly according to claim 7, characterized in that: An opening connecting the diversion channel is provided at the connection between the side baffle and the cover plate.

9. An electric motor, characterized in that: Includes the rotor assembly according to any one of claims 1 to 8.

10. A compressor, characterized in that: Includes the motor according to claim 9.

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