A rotor balancing block and a rotor structure
By designing a rotor balance block with a fully enclosed hollow cylindrical structure and an approximately hemispherical balanced part structure, the problems of rotating wind damage and wind noise in the prior art are solved, and noise reduction and efficiency improvement are achieved.
Patent Information
- Application Number
- CN202421657130.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-07-12
AI Technical Summary
The existing compressor rotor balance block generates a large amount of wind damage and wind noise during rotation, affecting the noise and performance of the compressor.
A rotor balance block is designed, adopting a fully enclosed hollow cylindrical structure and an approximately hemispherical balanced part structure to reduce fluid stress through the circumferential curved surface and reduce rotating wind damage and wind noise.
Effectively reduces noise, reduces losses and improves efficiency, achieving more stable rotation and lower fluid stress.
Smart Images
Figure CN222717353U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of compressors, and in particular relates to a rotor balancing block and a rotor structure. Background Art
[0002] The main function of the compressor rotor balance block in the compressor is to balance the rotational inertia force of the compressor rotor to prevent the compressor from vibrating or other unstable phenomena when rotating at high speed.
[0003] Specifically, the balancing block is connected to the end face of the compressor rotor due to its specific mass and shape, and rotates with the compressor rotor to offset the rotational unbalanced force caused by the eccentricity of the crankshaft, thereby ensuring the stability and safety of the compressor during operation.
[0004] However, the existing balance block structure will generate a large amount of wind loss and wind noise during the rotation process, which affects the noise and performance of the compressor. Utility Model Content
[0005] In order to solve the deficiencies of the prior art, the utility model provides a rotor balancing block and a rotor structure, which achieves the purpose of reducing rotational wind loss and wind noise, reducing noise and fluid stress, reducing losses and improving efficiency.
[0006] The technical purpose to be achieved by the utility model is achieved through the following technical solutions:
[0007] The utility model provides a rotor balancing block, comprising an enclosing portion and a balancing portion;
[0008] The enclosed portion is a hollow cylindrical structure, including an inner peripheral surface and an outer peripheral surface arranged coaxially;
[0009] The balancing portion includes a first surface, a second surface and a circumferential curved surface, the first surface and the second surface are arranged opposite to each other, and the first surface and the second surface have different areas, and the circumferential curved surface is connected between the first surface and the second surface;
[0010] At least one through hole is provided on the balancing portion, the through hole passes through the first surface and the second surface, and the circumferential curved surface is connected to the inner circumferential surface.
[0011] In some implementations, the number of the balancing parts is two or more, and the circumferential curved surfaces of adjacent balancing parts are connected or not connected. In combination with the rotational balancing requirements of different rotor structures, the number and distribution positions of the balancing parts are adjusted to achieve an adaptive effect.
[0012] In some implementations, the volumes of adjacent balancing parts are the same or different, and the volumes of balancing parts at different distribution positions are adjusted in combination with the rotational balancing requirements of different rotor structures to achieve an adaptive effect.
[0013] In some implementations, the diameter of the inner circumferential surface is set to D1, the diameter of the outer circumferential surface is set to D2, and D2-D1>3.0 mm, so as to ensure the thickness of the enclosing part so as to drive the balancing part to rotate stably.
[0014] In some implementations, the height of the inner circumferential surface along the axial direction is H1, and the height of the outer circumferential surface along the axial direction is H2, and |H1-H2|>=0mm. In combination with assembly requirements, the heights of the inner circumferential surface and the outer circumferential surface along the axial direction are adjusted to improve assembly efficiency and assembly stability.
[0015] In some implementations, the height of the inner circumferential surface along the axial direction is set to H1, and the height of the outer circumferential surface along the axial direction is set to H2, and H1>6.0mm or H2>6.0mm. In combination with assembly requirements, the heights of the inner circumferential surface and the outer circumferential surface along the axial direction are adjusted to improve assembly efficiency and assembly stability.
[0016] The utility model also provides a rotor structure, comprising a rotor body and any one of the above-mentioned rotor balancing blocks;
[0017] The rotor body comprises two end faces which are arranged opposite to each other in the axial direction, and the rotor balancing weight is arranged on at least one of the end faces so that the rotor balancing weight rotates with the rotor body to achieve the purpose of balancing.
[0018] In some implementations, the first surface and the second surface are both planes, and the second surface fits the end surface to ensure a close fit between the rotor balancing weight and the rotor body to achieve a synchronous and stable rotation effect.
[0019] In some implementations, the area of the first surface is smaller than the area of the second surface, and the second surface fits the end surface, which has a better effect of reducing fluid stress during rotation.
[0020] In some implementations, a recessed position for the enclosure portion to fit into is provided at the edge of the end surface, so as to facilitate assembly of the rotor balancing weight with the rotor body and improve assembly convenience.
[0021] In summary, the utility model has at least the following benefits:
[0022] 1. The rotor balancing block provided by the utility model adopts a fully enclosed enclosure structure design, which can reduce rotational wind loss and wind noise during rotation, effectively reduce noise, and adopts a balance structure design that is approximately hemispherical. During the rotation process, the circumferential curved surface can be used to reduce fluid stress, reduce losses and improve efficiency.
[0023] 2. The rotor structure provided by the utility model can effectively reduce noise, reduce loss and improve efficiency after applying the above-mentioned rotor balancing block. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 and Figure 2 This is a schematic diagram of the structure of the rotor balancing block of Embodiment 1 of the present utility model;
[0025] Figure 3 This is a schematic diagram of the structure of two balancing parts of Example 1 of the utility model;
[0026] Figure 4 It is a schematic diagram of the structure of three balancing parts of Example 1 of the utility model;
[0027] Figure 5 This is a schematic diagram showing the diameters of the inner circumference and the outer circumference of Example 2 of the present utility model;
[0028] Figure 6 It is a schematic diagram of the height marking of the inner circumference and the outer circumference of Example 2 of the utility model;
[0029] Figure 7 This is a schematic diagram of the rotor structure of Example 3 of the present utility model;
[0030] Figure 8 This is an exploded view of the rotor structure of Example 3 of the present utility model;
[0031] Fig. 9 This is a schematic structural diagram of the rotor body of Embodiment 3 of the present utility model;
[0032] 100, enclosing portion; 110, inner peripheral surface; 120, outer peripheral surface;
[0033] 200, balancing part; 210, first surface; 220, second surface; 230, circumferential curved surface; 240, through hole;
[0034] 300, rotor body; 310, end face; 320, recessed position. DETAILED DESCRIPTION
[0035] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. The described implementation is a part of the implementation of the utility model, not all of the implementations.
[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.
[0037] Embodiment 1:
[0038] See also Figure 1 and Figure 2 , a rotor balancing weight includes an enclosure portion 100 and a balancing portion 200.
[0039] It can be known that the rotor balancing weight is used to be set at the upper end or the lower end of the rotor body, so that the rotor balancing weight can rotate with the rotor body to offset the rotational unbalance force caused by the eccentricity of the crankshaft through the rotor balancing weight, wherein the rotation axis of the rotor balancing weight can be the rotation axis of the rotor body, that is, the axis of the enclosure 100 is the same as the axis of the rotor body, and the balancing part 200 deviates from the axis.
[0040] The enclosing portion 100 is a hollow cylindrical structure, including an inner circumferential surface 110 and an outer circumferential surface 120 that are coaxially arranged. The balancing portion 200 includes a first surface 210, a second surface 220 and a circumferential curved surface 230. The first surface 210 and the second surface 220 are relatively arranged, and the areas of the first surface 210 and the second surface 220 are different. The circumferential curved surface 230 is connected between the first surface 210 and the second surface 220.
[0041] Specifically, the enclosing portion 100 is a complete hollow cylindrical structure, presenting a closed form. The structure of the balancing portion 200 can be understood as an approximate hemispherical structure. For example, a sphere can include a circular sphere and an elliptical sphere. Therefore, the structure of the balancing portion 200 can be understood as an approximate hemispherical structure or a semi-elliptical sphere structure. Of course, it can also be a combination of an approximate hemispherical structure or a semi-elliptical sphere structure, that is, the circumferential curved surface 230 is the outer surface of the sphere.
[0042] At least one through hole 240 is formed on the balancing portion 200 . The through hole 240 passes through the first surface 210 and the second surface 220 . The circumferential curved surface 230 is connected to the inner circumferential surface 110 .
[0043] As is known, the enclosure 100 is a hollow cylindrical structure, and the circumferential curved surface 230 of the balancing portion 200 is connected to the inner circumferential surface 110 of the enclosure 100, that is, the balancing portion 200 is located inside the enclosure 100, and the balancing portion 200 is connected to the enclosure 100 as a whole. When used, the rotor balancing weight is arranged at the upper end or the lower end of the rotor body, so that the first surface 210 or the second surface 220 of the balancing portion 200 is close to the end face of the rotor body, and the rotor balancing weight is locked on the rotor body by means of a locking bolt or a locking piece passing through the through hole 240. It can be understood that the rotor body is correspondingly provided with a hole position for the locking bolt or the locking piece to pass through.
[0044] It should be noted that in this example, there is no specific restriction on the number of through holes 240 , and the number of through holes 240 can be increased accordingly in combination with the requirements of locking stability.
[0045] In some embodiments, reference Figure 3 and Figure 4 The number of balancing parts 200 is two or more, and the circumferential curved surfaces 230 of adjacent balancing parts 200 are connected or not connected. In combination with the rotational balancing requirements of different rotor structures, the number and distribution positions of the balancing parts 200 are adjusted to achieve an adaptive effect.
[0046] For example, reference Figure 3 , the number of the balancing parts 200 is two, the circumferential curved surfaces 230 of the two balancing parts 200 are both connected to the inner circumferential surface 110 of the enclosing part 100, and there is a gap between the two balancing parts 200; Figure 4 The number of the balancing parts 200 is three, and the circumferential curved surfaces 230 of the three balancing parts 200 are all connected to the inner circumferential surface 110 of the enclosing part 100, and the circumferential curved surfaces 230 between adjacent balancing parts 200 are connected to each other. Of course, the number of the balancing parts 200 can also be four or five, etc., and this example does not limit this.
[0047] In some embodiments, the volumes of adjacent balancing parts 200 are the same or different. In combination with the rotational balancing requirements of different rotor structures, the volumes of the balancing parts 200 at different distribution positions are adjusted to achieve an adaptive effect.
[0048] For example, reference Figure 3 , the number of the balancing parts 200 is two, and the volumes of the two balancing parts 200 are the same, that is, the dimensions in all aspects are the same; Figure 4 The number of the balancing parts 200 is three, wherein the volume of the balancing part 200 located in the middle position is smaller than the volumes of the balancing parts 200 on both sides thereof.
[0049] The rotor balancing block provided by the utility model adopts a fully enclosed enclosure 100 structural design, which can reduce rotational wind loss and wind noise during rotation, effectively reducing noise, and adopts a balancing part 200 structural design that is approximately hemispherical. During the rotation process, the circumferential curved surface 230 can be used to reduce fluid stress, reduce losses and improve efficiency.
[0050] Embodiment 2:
[0051] The difference between this embodiment and embodiment 1 is that this embodiment further optimizes the structure of the rotor balancing block of the utility model, see Figure 5 and Figure 6 .
[0052] like Figure 5 As shown, in this example, the diameter of the inner circumference 110 is assumed to be D1, and the diameter of the outer circumference 120 is assumed to be D2, wherein the diameter D1 of the inner circumference 110 and the diameter D2 of the outer circumference 120 satisfy D2-D1>3.0 mm, and the difference between the diameters is also the thickness value of the enclosure 100. The thickness value of the enclosure 100 is limited to be greater than 3.0 mm to ensure the rigidity of the enclosure 100 so that it can be stably connected to the balancing part 200, thereby driving the balancing part 200 to rotate stably.
[0053] For example, the diameter D1 of the inner circumferential surface 110 is 36 mm, the diameter D2 of the outer circumferential surface 120 is 40 mm, and D2-D1 is equal to 4.0 mm.
[0054] In some embodiments, Figure 6 As shown, the height of the inner circumference 110 along the axial direction is H1, and the height of the outer circumference 120 along the axial direction is H2, and |H1-H2|>=0mm. In combination with assembly requirements, the heights of the inner circumference 110 and the outer circumference 120 along the axial direction are adjusted to improve assembly efficiency and assembly stability.
[0055] For example, the height of the inner circumference 110 along the axial direction is equal to the height of the outer circumference 120 along the axial direction, that is, |H1-H2|=0mm, or the height of the inner circumference 110 along the axial direction is 7.0mm, and the height of the outer circumference 120 along the axial direction is 6.0mm, therefore, |H1-H2|=1.0mm. Of course, the height of the inner circumference 110 along the axial direction may also be 6.0mm, and the height of the outer circumference 120 along the axial direction may be 7.0mm, therefore, |H1-H2|=1.0mm.
[0056] It can be seen that the height of the inner circumferential surface 110 along the axial direction in this example can be equal to the height of the outer circumferential surface 120 along the axial direction, or the height of the inner circumferential surface 110 along the axial direction can be slightly greater than the height of the outer circumferential surface 120 along the axial direction, or the height of the inner circumferential surface 110 along the axial direction can be slightly less than the height of the outer circumferential surface 120 along the axial direction.
[0057] In some embodiments, Figure 6 As shown, the height of the inner circumferential surface 110 along the axial direction is H1, and the height of the outer circumferential surface 120 along the axial direction is H2, wherein H1>6.0mm or H2>6.0mm. In combination with assembly requirements, the heights of the inner circumferential surface 110 and the outer circumferential surface 120 along the axial direction are adjusted to improve assembly efficiency and assembly stability.
[0058] For example, the height of the inner circumferential surface 110 along the axial direction is 7.0 mm, and the height of the outer circumferential surface 120 along the axial direction is also 7.0 mm; or the height of the inner circumferential surface 110 along the axial direction is 7.0 mm, and the height of the outer circumferential surface 120 along the axial direction is 8.0 mm.
[0059] In this embodiment, the specific sizes of the diameter D1 of the inner circumferential surface 110, the diameter D2 of the outer circumferential surface 120, the height H1 of the inner circumferential surface 110 along the axial direction, and the height H2 of the outer circumferential surface 120 along the axial direction are not limited, and they only need to satisfy the aforementioned relationship or numerical range.
[0060] Embodiment 3:
[0061] This embodiment provides a rotor structure based on the above embodiment. Figure 7-Figure 9 .
[0062] A rotor structure includes a rotor body 300 and a rotor balancing block in any one of the above embodiments.
[0063] The rotor body 300 includes two end surfaces 310 that are oppositely disposed in the axial direction. The rotor balancing weight is disposed on at least one of the end surfaces 310 so that the rotor balancing weight rotates with the rotor body 300 to achieve the purpose of balancing.
[0064] For example, the two end faces 310 are respectively the first end face 310 and the second end face 310, and the rotor balancing weight is arranged on the first end face 310, or the rotor balancing weight is arranged on the second end face 310, or in a rotor structure, the number of rotor balancing weights is two, and the two rotor balancing weights are respectively arranged on the first end face 310 and the second end face 310, which is not limited in this example.
[0065] In some embodiments, the first surface 210 and the second surface 220 are both planes, and the second surface 220 is in contact with the end surface 310. Setting the first surface 210 and the second surface 220 as planes can ensure a close fit between the rotor balance weight and the end surface 310 of the rotor body 300, so as to achieve a synchronous and stable rotation effect, while also avoiding noise problems caused by the existence of gaps.
[0066] Specifically, the area of the first surface 210 is smaller than the area of the second surface 220, so that the second surface 220 fits with the end surface 310, which not only improves the connectivity and fit between the rotor balance block and the rotor body 300, but also has a better effect of reducing fluid stress during rotation.
[0067] A recessed position 320 for the enclosure 100 to fit is provided at the edge of the end surface 310 of the rotor body 300. For example, the width of the recessed position 320 is equal to the thickness of the enclosure 100. Aligning the enclosure 100 with the recessed position 320 facilitates assembly of the rotor balancing weight with the rotor body 300, thereby improving assembly convenience.
[0068] The rotor structure provided by the utility model can drive the rotor balancing block to rotate together during the rotation of the rotor body, thereby utilizing the fully enclosed enclosure structure design to reduce rotational wind loss and wind noise during rotation, effectively reducing noise, and utilizing the balance structure design that is approximately hemispherical to reduce fluid stress, reduce losses and improve efficiency through the circumferential curved surface during rotation.
[0069] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0070] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0071] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0072] In the present utility model, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0073] Although the utility model is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.
Claims
1. A rotor balancing weight, characterized in that: It comprises an enclosing portion (100) and a balancing portion (200); The enclosing portion (100) is a hollow cylindrical structure, comprising an inner peripheral surface (110) and an outer peripheral surface (120) which are coaxially arranged; The balancing portion (200) comprises a first surface (210), a second surface (220) and a circumferential curved surface (230); the first surface (210) and the second surface (220) are arranged opposite to each other, and the first surface (210) and the second surface (220) have different areas; and the circumferential curved surface (230) is connected between the first surface (210) and the second surface (220); At least one through hole (240) is provided on the balancing portion (200), the through hole (240) passes through the first surface (210) and the second surface (220), and the circumferential curved surface (230) is connected to the inner circumferential surface (110).
2. The rotor balancing weight according to claim 1, characterized in that: The number of the balancing parts (200) is two or more, and the circumferential curved surfaces (230) of adjacent balancing parts (200) are connected or not connected.
3. The rotor balancing weight according to claim 2, characterized in that: The volumes of adjacent balancing parts (200) are the same or different.
4. The rotor balancing weight according to claim 1 is characterized in that The diameter of the inner circumferential surface (110) is D1, and the diameter of the outer circumferential surface (120) is D2, and D2-D1>3.0 mm.
5. The rotor balancing weight according to claim 1 is characterized in that The height of the inner peripheral surface (110) along the axial direction is H1, and the height of the outer peripheral surface (120) along the axial direction is H2, and |H1-H2|>=0mm.
6. The rotor balancing weight according to claim 1 is characterized in that The height of the inner peripheral surface (110) along the axial direction is H1, and the height of the outer peripheral surface (120) along the axial direction is H2, and H1>6.0 mm or H2>6.0 mm.
7. A rotor structure, characterized in that: A rotor balancing weight comprising a rotor body (300) and any one of claims 1 to 6; The rotor body (300) comprises two end surfaces (310) that are oppositely arranged in the axial direction, and the rotor balancing weight is arranged on at least one of the end surfaces (310).
8. The rotor structure according to claim 7, characterized in that: The first surface (210) and the second surface (220) are both planes, and the second surface (220) is in contact with the end surface (310).
9. The rotor structure according to claim 8, characterized in that: The area of the first surface (210) is smaller than the area of the second surface (220), and the second surface (220) is in contact with the end surface (310).
10. The rotor structure according to claim 7, characterized in that: A recessed position (320) for the enclosure (100) to fit into is provided at the edge of the end surface (310).