Special-shaped groove type motor rotor, rotary compressor and air conditioner

Abstract

The utility model discloses a special-shaped groove type motor rotor, a rotary compressor and an air conditioner, which comprises a rotor core, a rotating shaft hole is arranged at the axial central position of the rotor core in a penetrating manner, a plurality of rotor grooves are uniformly distributed along the circumference of the rotor core at intervals, and conductive strips are arranged in the rotor grooves. The rotor slots comprise a plurality of first special-shaped rotor slots and second special-shaped rotor slots, and the first special-shaped rotor slots and the second special-shaped rotor slots are oppositely arranged in different regions; by adopting the special-shaped rotor groove design, the overall height of the motor rotor is reduced, the process and the tool are simpler than those of a symmetrical balance block rotor in the manufacturing process of the rotor, the balance block raw material and the equipment tool can be saved, and the production cost is reduced. Therefore, the beneficial effects of reducing the design difficulty of the pump body of the press and simplifying tooling equipment in the assembly process of the press are achieved; in addition, due to the fact that a balance block device is omitted, in the machining process of the crankshaft, the straightness and the bounce precision can be guaranteed more easily.

Description

Technical Field

[0001] The utility model relates to the technical field of compressor motor rotors, in particular to a special-shaped slot motor rotor, a rotary compressor and an air conditioner. Background Art

[0002] The motor rotor, the rotating part of the motor, is used to convert electrical energy into mechanical energy, or vice versa. With the development of modern industry, motors are increasingly used in various fields, such as air conditioners, automotive engines, centrifuges, and compressors. However, the centrifugal force generated by the rotor's rotation can cause mechanical imbalance, leading to problems such as vibration, noise, and damage.

[0003] In order to solve these problems and improve the performance and life of the machinery, the traditional solution is to install a balancing block (counterweight) on the motor rotor. As a key component, the balancing block adjusts the mass distribution of the rotor to achieve lower vibration and noise levels, as well as good stability and reliability when the rotor rotates at high speed.

[0004] However, the use of balancing blocks also brings some technical problems; for example: the rotor requires more equipment and tooling during the production process; the heights of the balancing blocks at both ends of the rotor are inconsistent, and the press needs to avoid the position of the balancing blocks during the pump body design process. During the press assembly process, the tooling equipment requirements are relatively high; because the overall height of the rotor is relatively high, the total length of the crankshaft is longer, the crankshaft becomes more difficult to process, and the accuracy of straightness and runout is more difficult to guarantee. Utility Model Content

[0005] In response to the above technical problems in the related art, the present invention proposes a special-shaped slot motor rotor, a rotary compressor and an air conditioner, which can overcome the above-mentioned shortcomings of the prior art.

[0006] In order to achieve the above technical purpose, the technical solution of the utility model is implemented as follows:

[0007] In a first aspect of the present invention, a special-shaped slot motor rotor is provided;

[0008] The special-shaped slot motor rotor includes a rotor core, a shaft hole is provided through the axial center of the rotor core, a plurality of rotor slots are evenly distributed along its circumference, and conductive bars are provided in the rotor slots. The rotor slots include a plurality of first special-shaped rotor slots and a plurality of second special-shaped rotor slots, and the plurality of first special-shaped rotor slots and the plurality of second special-shaped rotor slots are arranged in opposite areas.

[0009] Furthermore, outer edges of the first special-shaped rotor slot and the second special-shaped rotor slot are both arranged adjacent to edges of the rotor core.

[0010] Furthermore, a central axis of each of the first special-shaped rotor slots and the second special-shaped rotor slot is parallel to a central axis of the rotor core.

[0011] Furthermore, the area of ​​the cavity cross section of the second special-shaped rotor slot is smaller than the area of ​​the cavity cross section of the first special-shaped rotor slot.

[0012] Furthermore, the first special-shaped rotor slot includes a first proximal end adjacent to the axis of the rotor core and a first distal end adjacent to the outer diameter of the rotor core, and the second special-shaped rotor slot includes a second proximal end adjacent to the axis of the rotor core and a second distal end adjacent to the outer diameter of the rotor core.

[0013] Furthermore, the cross-sectional shape of the first proximal end and the second proximal end is the same, the cross-sectional shape of the first distal end is an arc curve, and the curvature of the arc curve is consistent with the curvature of the outer diameter of the rotor core.

[0014] Furthermore, the minimum distance from the tangent point of the arc curve of the first distal end to the axis of the rotor core is equal to the minimum distance from the endpoint of the bent angle of the second distal end to the axis of the rotor core.

[0015] Furthermore, the angle of the cross section of the second distal end is less than or equal to 90 degrees.

[0016] According to a second aspect of the present invention, a rotary compressor is provided;

[0017] The rotary compressor includes the above-mentioned special-shaped slot motor rotor.

[0018] According to a third aspect of the present utility model, an air conditioner is provided;

[0019] The air conditioner comprises the above-mentioned special-shaped slot motor rotor.

[0020] The beneficial effects of the present invention are as follows: by optimizing and improving the design of the product of the present invention and adopting a special-shaped rotor slot design, the overall height of the motor rotor is reduced, and during the manufacturing process of the rotor, the process and tooling are simpler than those of a symmetrical balancing block rotor, and the raw materials and equipment tooling of the balancing blocks can be saved (the balancing block riveting equipment and process are eliminated), thereby achieving the beneficial effects of reducing the difficulty of the press pump body design and simplifying the tooling equipment during the press assembly process; in addition, since the balancing block device is eliminated, the straightness and runout accuracy of the crankshaft can be more easily guaranteed during the processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a top view of a special-shaped slot motor rotor according to an embodiment of the present utility model;

[0023] Figure 2 It is a top view of a conventional motor rotor according to the utility model;

[0024] Figure 3 According to the embodiment of the present invention, a special-shaped slot motor rotor is Figure 1 Detailed view of point A in the middle;

[0025] Figure 4 This is a side view of a special-shaped slot motor rotor according to an embodiment of the present utility model;

[0026] Figure 5 It is a side view of a conventional motor rotor according to the utility model;

[0027] In the figure: 1. Rotor core; 2. Conventional rotor slot; 3. First special-shaped rotor slot; 301. First proximal end; 302. First distal end; 4. Second special-shaped rotor slot; 401. Second proximal end; 402. Second distal end; 5. Conductive bar; 6. Rotating shaft hole; 7. First balancing block; 8. Second balancing block. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0029] It should be understood that in the description of the embodiments of the present invention, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the embodiments of the present invention, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0030] like Figure 1 、 Figure 3 and Figure 4 As shown, according to an embodiment of the present invention, a special-shaped slot-type motor rotor includes a rotor core 1, a shaft hole 6 is provided through the axial center position of the rotor core 1, a plurality of rotor slots are evenly spaced along the circumference of the rotor core 1, and conductive bars 5 are provided in the rotor slots. The rotor slots include a plurality of first special-shaped rotor slots 3 and a plurality of second special-shaped rotor slots 4, and the plurality of first special-shaped rotor slots 3 and the plurality of second special-shaped rotor slots 4 are arranged in opposite regions.

[0031] According to the special-shaped slot-type motor rotor of the present invention, in a specific embodiment, outer edges of the first special-shaped rotor slot 3 and the second special-shaped rotor slot 4 are both arranged adjacent to the edge of the rotor core 1 .

[0032] According to the special-shaped slot motor rotor of the present invention, in a specific embodiment, the central axis of each of the first special-shaped rotor slot 3 and the second special-shaped rotor slot 4 is parallel to the central axis of the rotor core 1 .

[0033] According to the special-shaped slot motor rotor of the present invention, in a specific embodiment, the area of ​​the cavity cross section of the second special-shaped rotor slot 4 is smaller than the area of ​​the cavity cross section of the first special-shaped rotor slot 3 .

[0034] According to a special-shaped slot-type motor rotor described in the present invention, in a specific embodiment, the first special-shaped rotor slot 3 includes a first proximal end 301 adjacent to the axis of the rotor core 1 and a first distal end 302 adjacent to the outer diameter of the rotor core 1, and the second special-shaped rotor slot 4 includes a second proximal end 401 adjacent to the axis of the rotor core 1 and a second distal end 402 adjacent to the outer diameter of the rotor core 1.

[0035] According to the special-shaped slot-type motor rotor described in the present invention, in a specific embodiment, the cross-sectional shapes of the first proximal end 301 and the second proximal end 401 are the same, and the cross-sectional shape of the first distal end 302 is an arc curve, and the curvature of the arc curve is consistent with the curvature of the outer diameter of the rotor core 1.

[0036] According to a special-shaped slot-type motor rotor described in the present invention, in a specific embodiment, the minimum distance from the tangent point of the arc curve of the first distal end 302 to the axis of the rotor core 1 is equal to the minimum distance from the endpoint of the angle of the second distal end 402 to the axis of the rotor core 1.

[0037] According to the special-shaped slot motor rotor of the present invention, in a specific embodiment, the angle of the cross-section of the second distal end 402 is less than or equal to 90 degrees.

[0038] In a second aspect of the present invention, a rotary compressor according to an embodiment of the present invention includes the special-shaped slot motor rotor as described above.

[0039] In a third aspect of the present invention, an air conditioner according to an embodiment of the present invention includes the special-shaped slot-type motor rotor as described above.

[0040] To sum up, with the help of the above-mentioned technical solution of the present invention, through the optimization and improvement design of the product of the present invention, the special-shaped rotor slot design is adopted, so that the overall height of the motor rotor is reduced, and the process and tooling of the rotor are simpler than those of the symmetrical balancing block rotor during the manufacturing process, and the balancing block raw materials and equipment tooling can be saved (the balancing block riveting equipment and process are eliminated), thereby achieving the beneficial effect of reducing the difficulty of the press pump body design and simplifying the tooling equipment during the press assembly process; in addition, since the balancing block device is eliminated, the straightness and runout accuracy of the crankshaft during the processing are also easier to ensure.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A special-shaped slot motor rotor, characterized in that: The invention comprises a rotor core (1), wherein a shaft hole (6) is provided through the rotor core (1) at an axial center position thereof, wherein the rotor core (1) is provided with a plurality of rotor slots evenly spaced along its circumference, wherein each of the rotor slots is provided with a conductive bar (5), wherein the rotor slots comprise a plurality of first special-shaped rotor slots (3) and a plurality of second special-shaped rotor slots (4), wherein the plurality of first special-shaped rotor slots (3) and the plurality of second special-shaped rotor slots (4) are arranged in opposite directions.

2. The special-shaped slot motor rotor according to claim 1, characterized in that: The outer edges of the first special-shaped rotor slot (3) and the second special-shaped rotor slot (4) are both arranged adjacent to the edge of the rotor core (1).

3. The special-shaped slot motor rotor according to claim 1, characterized in that: The central axis of each of the first special-shaped rotor slots (3) and the second special-shaped rotor slots (4) is parallel to the central axis of the rotor core (1).

4. The special-shaped slot motor rotor according to claim 1, characterized in that: The area of ​​the cavity cross section of the second special-shaped rotor slot (4) is smaller than the area of ​​the cavity cross section of the first special-shaped rotor slot (3).

5. The special-shaped slot motor rotor according to claim 1, characterized in that: The first special-shaped rotor slot (3) comprises a first proximal end (301) adjacent to the axis of the rotor core (1) and a first distal end (302) adjacent to the outer diameter of the rotor core (1), and the second special-shaped rotor slot (4) comprises a second proximal end (401) adjacent to the axis of the rotor core (1) and a second distal end (402) adjacent to the outer diameter of the rotor core (1).

6. The special-shaped slot motor rotor according to claim 5, characterized in that: The cross-sectional shapes of the first proximal end (301) and the second proximal end (401) are the same, and the cross-sectional shape of the first distal end (302) is an arc curve, the curvature of the arc curve being consistent with the curvature of the outer diameter of the rotor core (1).

7. The special-shaped slot motor rotor according to claim 6, characterized in that: The minimum distance from the tangent point of the arc curve of the first distal end (302) to the axis of the rotor core (1) is equal to the minimum distance from the end point of the angle of the second distal end (402) to the axis of the rotor core (1).

8. The special-shaped slot motor rotor according to claim 6, characterized in that: The angle of the cross section of the second distal end (402) is less than or equal to 90 degrees.

9. A rotary compressor, characterized in that: It comprises a special-shaped slot motor rotor as claimed in any one of claims 1 to 8.

10. An air conditioner, characterized in that: It comprises a special-shaped slot motor rotor as claimed in any one of claims 1 to 8.

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