Stator core for digital variable frequency generator

Abstract

The utility model discloses a stator iron core for a digital frequency conversion generator. The stator iron core comprises an upper framework (10), a lower framework (20) matched with the upper framework (10), a stator iron core (30) arranged between the lower framework (20) and the upper framework (10), and an insulating part (40) arranged on the stator iron core (30), according to the utility model, the conventional injection molding process is replaced by using the insulating parts, the upper framework and the lower framework on the stator core, and the insulating parts are attached in the wire slots of the stator core and in the trapezoidal holes of the upper framework and the lower framework, so that the gap from the coil to the stator core is increased, the full slot rate of the winding of the stator core is reduced, and the winding efficiency of the stator core is improved. And the temperature of the body is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of generator technology, specifically relating to a stator core for a digital frequency converter generator. Background Technology

[0002] Digital inverter generators are devices that adjust motor speed to change output, thereby improving fuel efficiency and saving on power generation costs. Currently, the stator cores for motors in this industry are mainly produced using silicon steel sheet injection molding. The injection molding process for motor stator cores requires high precision in terms of plastic wall thickness and mold specifications; excessively thick walls negatively impact the stator's slot fill factor. Reducing the stator's slot fill factor is a key research and development direction in the industry. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, a stator core for digital frequency converters is proposed.

[0004] The technical solution adopted by this utility model is: to provide a stator core for a digital frequency converter, including an upper frame, a lower frame used in conjunction with the upper frame, a stator core installed between the lower frame and the upper frame, and an insulating component installed on the stator core.

[0005] Preferably, the upper and lower frame structures have the same dimensions; the upper and lower frame are respectively installed on the upper and lower surfaces of the stator core.

[0006] Preferably, the upper frame includes a ring and several T-shaped pieces disposed on the outer side of the ring, with a trapezoidal hole formed between two adjacent T-shaped pieces; the several T-shaped pieces are arranged in an array around the center of the ring.

[0007] Preferably, the stator core includes a stator ring and a plurality of T-shaped posts disposed on the outer side of the stator ring, with a groove formed between two adjacent T-shaped posts; the plurality of T-shaped posts are arranged in an array around the center of the stator ring.

[0008] Preferably, the cross-sectional shapes of the stator ring, T-shaped column, and wire groove are the same as the shapes of the circular ring, T-shaped component, and trapezoidal hole, respectively, and the number of T-shaped column and T-shaped component is the same.

[0009] Preferably, the insulating component includes an inner plate, flange plates disposed on both sides of the inner plate, folded plates disposed on the flange plates, and flaps disposed on the folded plates; the insulating component is attached between the upper frame, the stator core, and the lower frame through grooves and trapezoidal holes.

[0010] The beneficial effects of this utility model are:

[0011] This invention replaces the existing injection molding process by using insulating components and upper and lower skeletons on the stator core. By attaching the insulating components to the slots of the stator core and to the trapezoidal holes of the upper and lower skeletons, the gap between the coil and the stator core is increased, the full slot ratio of the stator core winding is reduced, and the temperature of the machine body is reduced. Attached Figure Description

[0012] Figure 1 This is an exploded structural diagram of the stator core for a digital frequency converter according to the present invention.

[0013] Figure 2 for Figure 1 Schematic diagram of the upper and middle skeleton;

[0014] Figure 3 for Figure 1 A schematic diagram of the structure of the insulating component. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0016] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0017] Unless otherwise defined, the technical or scientific terms used in this patent document shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar words used in this utility model patent specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "an," "a," or "the," etc., do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising," "including," etc., mean that the element or object preceding "comprising" or "including" encompasses the element or object listed following "comprising" or "including," and their equivalents, but do not exclude other elements or objects. Terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. They are only for the convenience of describing this utility model 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 utility model.

[0018] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the features in the following embodiments can be combined with each other.

[0019] Example 1:

[0020] like Figures 1 to 3 As shown, a stator core for a digital inverter generator is provided, comprising an upper frame 10, a lower frame 20 used in conjunction with the upper frame 10, a stator core 30 installed between the lower frame 20 and the upper frame 10, and an insulating member 40 installed on the stator core 30; the upper frame 10 and the lower frame 20 have the same structural dimensions; the upper frame 10 and the lower frame 20 are respectively installed on the upper surface and the lower surface of the stator core 30 (e.g., ...). Figure 1 ).

[0021] An upper frame 10 and a lower frame 20 are respectively installed on the upper and lower surfaces of the stator core 30, and an insulating component 40 is installed on the stator core 30. The upper frame 10, the lower frame 20 and the insulating component 40 are all made of insulating material. The upper and lower ends of the insulating component 40 are connected to the upper frame 10 and the lower frame 20 respectively, which increases the gap between the coil and the stator core 30, thereby reducing the fill factor of the stator core 30 and thus reducing the temperature of the machine body.

[0022] Furthermore, the upper frame 10 includes a ring 11, and a plurality of T-shaped members 12 disposed on the outer side of the ring 11, with a trapezoidal hole 13 formed between two adjacent T-shaped members 12; the plurality of T-shaped members 12 are arranged in an array around the center of the ring 11 (e.g., Figure 2 ).

[0023] Furthermore, the stator core 30 includes a stator ring 31, and a plurality of T-shaped posts 32 disposed on the outer side of the stator ring 31, with a groove 33 formed between two adjacent T-shaped posts 32; the plurality of T-shaped posts 32 are arranged in an array around the center of the stator ring 31 (e.g., Figure 2 ).

[0024] Furthermore, the cross-sectional shapes of the stator ring 31, T-shaped column 32 and wire groove 33 are the same as those of the circular ring 11, T-shaped piece 12 and trapezoidal hole 13, and the number of T-shaped column 32 and T-shaped piece 12 is the same.

[0025] The upper frame 10 and the lower frame 20 are overlapped with the T-shaped column 32 by the T-shaped piece 12, and the upper frame 10 and the lower frame 20 are fixed to the upper and lower surfaces of the stator core 30 by dispensing glue or pressing plate, at which time the trapezoidal hole 13 and the wire groove 33 overlap.

[0026] The insulating component 40 can be insulating paper. Insulating paper is used not only because it is thinner, but also because it is easier to fit into the trapezoidal hole 13 and the wire groove 33. During winding, it can improve the tightness between the coil and the stator core 30.

[0027] Furthermore, the insulating component 40 includes an inner plate 41, flange plates 42 disposed on both sides of the inner plate 41, a folding plate 43 disposed on the flange plate 42, and a flap 44 disposed on the folding plate 43; the insulating component 40 is attached between the upper frame 10, the stator core 30, and the lower frame 20 through the wire groove 33 and the trapezoidal hole 13 (e.g., Figure 3 ).

[0028] The insulating component 40 is attached to the inner side of the trapezoidal hole 13 and the wire groove 33 via the inner plate 41, and then attached to both sides of the trapezoidal hole 13 and the wire groove 33 via two flange plates 42. Finally, it is completely attached to the opening of the trapezoidal hole 13 and the wire groove 33 via the folding plate 43 and the flip plate 44, so that the outer side and the upper and lower surfaces of the stator core 30 are completely covered by the insulating component 40, the upper frame 10 and the lower frame 20, which effectively blocks the magnetic connection between the coil and the stator core 30, increases the gap between the coil and the stator core 30, thereby reducing the full slot ratio of the stator core 30 and thus reducing the temperature of the machine body.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered illustrative and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing and description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A stator core for a digital frequency converter, characterized in that: It includes an upper frame (10), a lower frame (20) used in conjunction with the upper frame (10), a stator core (30) installed between the lower frame (20) and the upper frame (10), and an insulating member (40) installed on the stator core (30).

2. The stator core for a digital frequency converter according to claim 1, characterized in that: The upper frame (10) and the lower frame (20) have the same structural dimensions; the upper frame (10) and the lower frame (20) are respectively installed on the upper surface and the lower surface of the stator core (30).

3. The stator core for a digital frequency converter according to claim 2, characterized in that: The upper frame (10) includes a ring (11) and several T-shaped pieces (12) arranged outside the ring (11), with a trapezoidal hole (13) formed between two adjacent T-shaped pieces (12); the several T-shaped pieces (12) are arranged in an array around the center of the ring (11).

4. The stator core for a digital frequency converter according to claim 3, characterized in that: The stator core (30) includes a stator ring (31) and a plurality of T-shaped posts (32) arranged on the outside of the stator ring (31), with a groove (33) formed between two adjacent T-shaped posts (32); the plurality of T-shaped posts (32) are arranged in an array around the center of the stator ring (31).

5. A stator core for a digital frequency converter according to claim 4, characterized in that: The cross-sectional shapes of the stator ring (31), T-shaped column (32) and groove (33) are the same as those of the circular ring (11), T-shaped piece (12) and trapezoidal hole (13), and the number of T-shaped column (32) and T-shaped piece (12) is the same.

6. A stator core for a digital frequency converter according to claim 5, characterized in that: The insulating component (40) includes an inner plate (41), flange plates (42) disposed on both sides of the inner plate (41), a folding plate (43) disposed on the flange plate (42), and a flap plate (44) disposed on the folding plate (43); the insulating component (40) is attached between the upper frame (10), the stator core (30) and the lower frame (20) through a wire groove (33) and a trapezoidal hole (13).

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