CN213846559U - Three-phase disc type capacitance variable electrostatic motor - Google Patents
Three-phase disc type capacitance variable electrostatic motor Download PDFInfo
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- CN213846559U CN213846559U CN202022814239.6U CN202022814239U CN213846559U CN 213846559 U CN213846559 U CN 213846559U CN 202022814239 U CN202022814239 U CN 202022814239U CN 213846559 U CN213846559 U CN 213846559U
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Abstract
The utility model discloses a three-phase disc type capacitance variable electrostatic motor, which comprises a casing and a rotor rotating shaft which are coaxially sleeved, wherein the rotor rotating shaft penetrates out of the casing through a through hole which is arranged at the central positions of the front and the rear surfaces of the casing; the stator comprises a stator and a rotor, and is characterized in that a plurality of stator electrode layers taking a rotor rotating shaft as a central shaft are arranged on the inner side surface of the stator, a plurality of rotor electrode layers taking the rotor rotating shaft as the central shaft are arranged on the outer side surface of the rotor, the plurality of stator electrode layers and the plurality of rotor electrode layers are distributed in a staggered mode from outside to inside in sequence, and a dielectric medium is filled between each two adjacent stator electrode layers and each rotor electrode layer. The utility model provides an axial structure of motor among the prior art thick and heavy, rotor heat dissipation ability is poor, motor job stabilization's technical problem.
Description
Technical Field
The utility model belongs to the technical field of the electrostatic machine, concretely relates to three-phase disk electric capacity variable electrostatic machine.
Background
The capacitance variable electrostatic motor is an energy conversion device using static electricity as an energy source. After the motor applies driving voltage, electrostatic torque is generated between the stator and rotor electrodes based on the energy variation trend of electrostatic energy, and the rotor is driven to rotate so as to realize minimum energy between the stator and rotor electrodes. The capacitance variable electrostatic motor has a series of advantages of simple structure, easy processing, low cost, small loss, suitability for the fields of ultrahigh temperature and strong magnetic field, and the like.
The capacitance variable electrostatic motor is of a radial electric field type, in which an air gap between a stator electrode layer and a rotor electrode layer and an electric field direction are distributed along a radial direction, which not only causes a large axial size and a heavy structure of the motor, but also causes poor heat dissipation capability of the rotor and difficulty in cooling. In addition, the capacitance variable electrostatic motor generally adopts a single-phase structure, two electrodes with different electric potentials are distributed on a stator, and the fixed positions of the two connected stator electrodes are different from each other by 180 electrical angles. When the motor works, the motor has no self-starting capability, and the output torque has large pulsation. Therefore, the performance of the motor with a single-phase structure is not stable enough, and the motor cannot be applied to occasions with higher requirements on power and torque.
Disclosure of Invention
To defect and not enough among the prior art, the utility model provides a three-phase disk electric capacity variable electrostatic machine to solve among the prior art technical problem that motor axial structure is heavy, the rotor heat dissipation ability is poor, motor work is unstable.
In order to achieve the purpose, the utility model adopts the following technical proposal:
a three-phase disc type capacitance variable electrostatic motor comprises a shell and a rotor rotating shaft which are coaxially sleeved, wherein the rotor rotating shaft penetrates out of the shell through a through hole formed in the center positions of the front surface and the rear surface of the shell;
the stator comprises a stator, a rotor, a plurality of stator electrode layers and a plurality of rotor electrode layers, wherein the inner side surface of the stator is provided with the plurality of stator electrode layers which take a rotor rotating shaft as a central shaft, the outer side surface of the rotor is provided with the plurality of rotor electrode layers which take the rotor rotating shaft as the central shaft, the plurality of stator electrode layers and the plurality of rotor electrode layers are sequentially distributed in a staggered mode from outside to inside, and a dielectric medium is filled between the adjacent stator electrode layers and the adjacent rotor electrode layers;
the same rotor electrode layer comprises a plurality of rotor electrodes arranged at intervals;
the same stator electrode layer comprises a plurality of stator electrode units arranged at intervals, each stator electrode unit comprises a first stator electrode, a second stator electrode and a third stator electrode arranged at intervals, and the fixed positions of the adjacent stator electrodes differ in electrical angle along the rotation direction of the rotor;
all the first stator electrodes are mutually connected through a lead and then led out of the shell; the second stator electrodes are mutually connected through a lead and then led out of the shell; and the third stator electrodes are mutually connected through a lead and then led out of the shell.
The utility model discloses still have following technical characteristic:
specifically, the first stator electrode, the second stator electrode, the third stator electrode and the rotor electrode are fan-shaped or rectangular.
Further, the dielectric is a gas or a liquid.
Further, the stator is made of an insulating material.
Further, the rotor is made of an electrically conductive material.
Further, the housing is a cylindrical housing.
Compared with the prior art, the utility model, profitable technological effect is:
1. compared with the prior art, the utility model discloses an axial dimensions obtains reducing, volume and weight reduction, and the static motor structure is compacter to make the motor have great power/weight ratio and torque density. Because the utility model discloses have less axial dimensions, the structure is flat, can be better be applied to the specific occasion of planar motion, for example be used in on aircraft, the electric motor car that power/weight ratio is higher, be used in domestic appliance such as fan, wheel shell, the pump of the flat appearance of demand.
2. The utility model discloses the motor adopts three-phase construction, and at the during operation, the step angle of motor reduces, and the output torque is undulant also corresponding to be reduced. Compared with the prior art, the utility model discloses the torque that the motor produced is more steady, and the performance is better.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the stator electrode layer structure of the present invention.
Fig. 3 is a schematic view of the rotor structure of the present invention.
Fig. 4 is a graph showing the variation of the capacitance between A, B, C three phases and the rotor in example 1.
Fig. 5 is a graph showing a change in capacitance between the stator and the rotor in example 1.
The reference numerals in the figures denote:
1-shell, 2-rotor shaft, 3-stator, 4-rotor, 5-stator electrode layer 6-rotor electrode layer 51-stator electrode unit, 511-first stator electrode, 512-second stator electrode, 513-third stator electrode, 61-rotor electrode.
The present invention will be described in detail with reference to the drawings and the following detailed description.
Detailed Description
All parts in the present invention are those known in the art, unless otherwise specified.
The following embodiments of the present invention are given, and it should be noted that the present invention is not limited to the following embodiments, and all the equivalent transformations made on the basis of the technical solution of the present application all fall into the protection scope of the present invention.
The terms "upper", "lower", "front", "rear", "top", "bottom", and the like as used herein are used merely for convenience in describing the invention and to simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, "inner" and "outer" refer to the inner and outer of the corresponding component profiles, and the above terms should not be construed as limiting the invention.
Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or imply that the number of technical features indicated is significant. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In the present invention, the terms "mounting", "connecting", "fixing", etc. should be understood in a broad sense without being stated to the contrary, and may be, for example, fixedly connected, or detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1 to 3, a three-phase disc type capacitance variable electrostatic motor includes a casing 1 and a rotor shaft 2 coaxially sleeved, the rotor shaft 2 penetrates out of the casing 1 through a through hole formed in the center of the front and rear surfaces of the casing 1, and further includes a stator 3 arranged along the inner wall of the casing 1 in a circumferential direction and coaxially with the rotor shaft, and a rotor 4 sleeved and fixed on the rotor shaft 2; the rotor 4 is used for grounding.
A plurality of stator electrode layers 5 taking the rotor rotating shaft 2 as a central shaft are arranged on the inner side surface of the stator 3, a plurality of rotor electrode layers 6 taking the rotor rotating shaft 2 as a central shaft are arranged on the outer side surface of the rotor 4, the plurality of stator electrode layers 5 and the plurality of rotor electrode layers 6 are distributed in a staggered mode from outside to inside in sequence, and a dielectric medium is filled between the adjacent stator electrode layers 5 and the adjacent rotor electrode layers 6;
the same rotor electrode layer 6 comprises a plurality of rotor electrodes 61 arranged at intervals;
the same stator electrode layer 5 comprises a plurality of stator electrode units 51 arranged at intervals, each stator electrode unit comprises a first stator electrode 511, a second stator electrode 512 and a third stator electrode 513 arranged at intervals, and the fixed positions of the adjacent stator electrodes have an electrical angle difference of 120 degrees along the rotation direction of the rotor;
the first stator electrodes 511 are connected with each other through a lead and then led out of the shell 1; the second stator electrodes 512 are connected with each other through a lead and then led out of the housing 1; the third stator electrodes 513 are connected to each other by a lead wire and then led out of the housing 1.
The number of first stator electrodes 511, second stator electrodes 512 and third stator electrodes 513 is any possible number. The first stator electrodes 511 are connected with each other through a lead to form a phase a; the second stator electrodes 512 are connected with each other through a lead to form a phase B; the third stator electrodes 513 are connected to each other by a wire to form a C phase.
As a preferable configuration of this embodiment, the first stator electrode 511, the second stator electrode 512, the third stator electrode 513 and the rotor electrode 61 are fan-shaped or rectangular, and the centers of the first stator electrode 511, the second stator electrode 512 and the third stator electrode 513 in the same stator electrode layer are overlapped.
As a preferable mode of this embodiment, the dielectric is a gas or a liquid.
As a preferable aspect of the present embodiment, the stator 3 is made of an insulating material.
As a preferred solution of this embodiment, the rotor 4 is made of a conductive material, and the rotor is made of any possible conductive material, and may be made of a conductive layer plated with any possible material on a non-conductive material.
As a preferable mode of the present embodiment, the housing 1 is a cylindrical housing.
In the present embodiment, in the cylindrical casing 1, the stator electrode layers 5 and the rotor electrode layers 6 are distributed in a staggered manner from outside to inside with the rotor rotating shaft 2 as a central axis, and 12 stator electrode layers 51 and 11 rotor electrode layers 61 are provided in total, the number of the first stator electrodes 511 in each stator electrode layer 51 is 15, the number of the second stator electrodes 512 is 15, the number of the third stator electrodes 513 is 15, and the number of the rotor electrodes in each rotor electrode layer 61 is 30.
In other embodiments, the first stator electrode 511, the second stator electrode 512, and the third stator electrode 513 may be arranged in any possible manner.
The working principle of the utility model is as follows:
when the polar plates between the first stator electrode 511 and the rotor electrode 61 are aligned with each other, the distance between the first stator electrode 511 and the rotor electrode 61 reaches the minimum value, the facing area reaches the maximum value, the capacitance reaches the maximum value, and because the fixed positions of the adjacent stator electrodes are different by 120 degrees in the rotation direction of the rotor, the distances between the second stator electrode 512 and the rotor electrode 61 and between the third stator electrode 513 and the rotor electrode 61 reach the same smaller value, the capacitance reaches the same smaller value, and the sum of the three capacitances reaches the maximum value; when the polar plates between the first stator electrode 511 and the rotor electrode 61 are completely staggered, the distance between the first stator electrode 511 and the rotor electrode 61 reaches the maximum value, the facing area reaches the minimum value, the capacitance reaches the minimum value, and because the fixed positions of the adjacent stator electrodes are different by 120 degrees in the rotation direction of the rotor, the distances between the second stator electrode 512 and the rotor electrode 61 and between the third stator electrode 513 and the rotor electrode 61 reach the same larger value, the capacitance reaches the same larger value, and the sum of the three capacitances reaches the minimum value, so that the motor is ensured to have larger output torque. In addition, because the fixed positions of the adjacent stator electrodes are different by 120 electrical angles along the rotation direction of the rotor, the influence of the second stator electrode and the third stator electrode on the space position where the sum of the three capacitances reaches the maximum value and the minimum value is different by 120 electrical angles and 240 electrical angles respectively. Compare in single-phase motor and reach 360 degrees electric angles of spatial position difference that electric capacity is the maximum value, the utility model discloses the spatial position that the motor reaches electric capacity is the maximum value differs 120 degrees electric angles, has improved the problem of torque pulsation when guaranteeing that the torque is the biggest, has effectively improved motor efficiency.
The utility model discloses working process during the use as follows:
when the axis of the first stator electrode 511 is not coincident with the axis of the rotor electrode 61, the first stator electrode 511 is energized, and an electrostatic force parallel to the stator motor layer is generated between the first stator electrode 511 and the rotor electrode 61, and the electrostatic force tries to align the rotor electrode 4 and the stator first stator electrode 511 with each other, so that the rotor electrode is driven to move, and the axis of the rotor electrode 61 approaches to the axis of the first stator electrode 511.
When the axis of the first stator electrode 511 is not coincident with the axis of the rotor electrode 61, the first stator electrode 511 is electrified, an electrostatic force parallel to the layer of the first stator electrode 511 is generated between the first stator electrode 511 and the rotor electrode 61, the electrostatic force tries to align the polar plate of the rotor electrode 61 with the polar plate of each stator electrode, so that the movement along the width direction of the polar plate of the stator electrode is generated, and the axis of the rotor electrode 61 approaches to the axis of the first stator electrode 511. When the axis of the rotor electrode 61 coincides with the axis of the stator first stator electrode 511, the rotor 4 reaches the equilibrium position, that is, when the first stator electrode 511 and the rotor electrode 61 are opposite, the electrostatic tension disappears, and the rotor 4 does not rotate any more. At this time, the second stator electrode 512 is energized, and an electrostatic pull force with the second stator electrode 512 as an axis is generated. And by analogy, the A-B-C three phases formed by connecting the stator electrodes through the conducting wires rotate by one rotor pole pitch every time the rotor is electrified. And continuously electrifying the electrodes of each phase according to the sequence of A-B-C-A, continuously moving the electrostatic pull axis in the motor along the direction of A-B-C-A, and rotating the rotor 4 along the direction of A-B-C-A. If the phase windings are energized in turn in the order of A-C-B-A, the electrostatic pull axis rotates in the direction of A-C-B-A and the rotor 4 rotates in the opposite direction of A-C-B-A.
The utility model discloses the electric capacity ability has been passed through and has been detected, for example, fig. 4, fig. 5 are shown, and the testing result explains the utility model discloses great electric capacity amplitude and electric capacity peak value have, can guarantee that the motor produces the output torque of ideal.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the present invention does not separately describe various possible modes.
In addition, the various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.
Claims (6)
1. A three-phase disc type capacitance variable electrostatic motor comprises a shell (1) and a rotor rotating shaft (2) which are coaxially sleeved, wherein the rotor rotating shaft (2) penetrates out of the shell (1) through a through hole formed in the center positions of the front surface and the rear surface of the shell (1), and is characterized by further comprising a stator (3) which is arranged along the circumferential direction of the inner wall of the shell (1) in a fit manner and is coaxial with the rotor rotating shaft, and a rotor (4) which is sleeved and fixed on the rotor rotating shaft (2);
a plurality of stator electrode layers (5) taking the rotor rotating shaft (2) as a central shaft are arranged on the inner side surface of the stator (3), a plurality of rotor electrode layers (6) taking the rotor rotating shaft (2) as a central shaft are arranged on the outer side surface of the rotor (4), the plurality of stator electrode layers (5) and the plurality of rotor electrode layers (6) are sequentially distributed in a staggered manner from outside to inside, and a dielectric medium is filled between each two adjacent stator electrode layers (5) and each rotor electrode layer (6);
the same rotor electrode layer (6) comprises a plurality of rotor electrodes (61) arranged at intervals;
the same stator electrode layer (5) comprises a plurality of stator electrode units (51) arranged at intervals, each stator electrode unit comprises a first stator electrode (511), a second stator electrode (512) and a third stator electrode (513) arranged at intervals, and the fixed positions of the adjacent stator electrodes have an electrical angle difference of 120 degrees along the rotation direction of the rotor;
the first stator electrodes (511) are mutually connected through leads and then led out of the shell (1); the second stator electrodes (512) are connected with each other through a lead and then led out of the shell (1); and the third stator electrodes (513) are mutually connected through leads and then are led out of the shell (1).
2. A three-phase disc-type capacitance variable electrostatic machine according to claim 1, characterized in that the first (511), second (512) and third (513) stator electrodes and rotor electrodes are fan-shaped or rectangular in shape.
3. A three-phase disc capacitance variable electrostatic machine as claimed in claim 1 wherein the dielectric is a gas or a liquid.
4. A three-phase disc-type capacitance variable electrostatic machine according to claim 1, characterized in that the stator (3) is made of insulating material.
5. A three-phase disc-type capacitively variable electrostatic machine according to claim 1, characterized in that said rotor (4) is made of an electrically conductive material.
6. A three-phase disc-type capacitance variable electrostatic machine according to claim 1, characterized in that the housing (1) is a cylindrical housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022814239.6U CN213846559U (en) | 2020-11-27 | 2020-11-27 | Three-phase disc type capacitance variable electrostatic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022814239.6U CN213846559U (en) | 2020-11-27 | 2020-11-27 | Three-phase disc type capacitance variable electrostatic motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213846559U true CN213846559U (en) | 2021-07-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022814239.6U Active CN213846559U (en) | 2020-11-27 | 2020-11-27 | Three-phase disc type capacitance variable electrostatic motor |
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| Country | Link |
|---|---|
| CN (1) | CN213846559U (en) |
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- 2020-11-27 CN CN202022814239.6U patent/CN213846559U/en active Active
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