CN108880156B

CN108880156B - Asynchronous capacitor running motor

Info

Publication number: CN108880156B
Application number: CN201810643745.8A
Authority: CN
Inventors: 胡洪武
Original assignee: Jiangmen Lusituo Motor Electric Appliance Co ltd
Current assignee: Jiangmen Lusituo Motor Electric Appliance Co ltd
Priority date: 2018-06-21
Filing date: 2018-06-21
Publication date: 2020-08-07
Anticipated expiration: 2038-06-21
Also published as: CN108880156A

Abstract

The invention discloses an asynchronous capacitor running motor which comprises a stator core body and a rotor core body, wherein the stator core body is of a cylindrical structure formed by axially overlapping a plurality of identical annular stator sheets, the outer contour of the stator core body is formed by four straight line sections which are opposite and parallel in pairs and four circular arcs which are opposite in pairs, a plurality of wire slots are uniformly distributed on the inner contour of the stator core body, the rotor core body is positioned in the stator core body, a rotor shaft mounting hole is formed in the center of the rotor core body, a plurality of wire winding holes are formed in the rotor core body, and an included angle is formed between each wire winding hole and each rotor shaft mounting hole along the direction of the central shaft of the rotor core body. When the rotor core body runs in the stator core body, the same winding hole is stressed stably, the problem that output current is unstable and low-efficiency due to unstable force between the winding hole and the wire groove during running is solved, and the stator core body winding device is simple in structure, reliable in work and beneficial to a generator to output stable and efficient current.

Description

Asynchronous capacitor running motor

Technical Field

The invention relates to the technical field of motors, in particular to an asynchronous capacitor running motor.

Background

The capacitor split-phase motor has main winding and auxiliary winding (starting winding) on the stator winding, and large-capacity starting capacitor connected serially to the starting winding to make the phase angle of the main winding and the auxiliary winding form 90 deg, so as to produce great starting torque and start the rotor.

For the permanent split-phase capacitor motor, the capacitors connected in series are connected in series with the start winding when the motor is started or normally runs. The starting torque of the permanent split-phase motor is small, so that the permanent split-phase motor is very suitable for application in electrical equipment such as exhaust fans and exhaust fans requiring low starting torque. The capacitor type starting motor has the advantages that the operation winding components are set in the positive and negative winding directions, so that the motor can conveniently run in the reverse and forward directions only by switching the serial connection direction of the operation winding and the starting winding.

The single-phase capacitor motor consists of a stator, a rotor, front and rear end covers, a bearing and the like. The coils wound with the enamel wire on the stator are also called windings. The capacitor motor has a main winding and an auxiliary winding, which are embedded in the stator slots according to the designed positions. The stator coil is the most vulnerable, and has strict requirements on winding, embedding, connection, insulation and inspection. The motor rotor is laminated with silicon steel sheets. The rotor silicon steel sheet is punched with a closed circular groove, and the upper sheet groove and the lower sheet groove are staggered slightly in sequence during laminating, so that an inclined groove is formed on the whole, and the rotation is more uniform and stable. The rotor winding is made by casting pure aluminum in the rotor slot instead of conducting wire. Only the aluminum bars and the two end rings in the rotor groove are seen, the shape of the rotor groove is like a cage, so that some books call the squirrel-cage rotor.

In the prior art, the capacitive motor applied to the aspect of the range hood has the following problems: the motor is constrained by the structure of the whole machine product, the motor can not increase the stacking thickness any more, the magnetic flux of the existing motor is in a saturated state, when only a winding copper wire is adjusted, the rising space of the rotating speed of the motor is not large, the Energy Efficiency Index (EEI) and the Fluid Dynamic Efficiency (FDE) can not meet the requirements, the full rate of a slot can be increased too much, the copper wire can not be embedded, and the temperature rise of the motor also exceeds the requirements.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the related art. Therefore, the asynchronous capacitor running motor has higher energy efficiency index and fluid power efficiency.

In order to achieve the purpose, the technical scheme of the invention is as follows:

the utility model provides an asynchronous capacitor operation motor, includes the motor main part to and set up the core structure in the motor main part is inside, the motor main part is including cup jointing upper cover and the lower cover at the motor main part both ends respectively, its characterized in that: the core structure comprises a stator core body and a rotor core body, wherein the stator core body is of a cylindrical structure formed by axially stacking a plurality of identical annular stator sheets, the outer contour of the stator core body is formed by four straight line sections which are opposite to each other in pairs and are parallel to each other and four circular arcs which are opposite to each other in pairs, a plurality of wire grooves are uniformly distributed on the inner contour of the stator core body, the rotor core body is positioned in the stator core body, a rotor shaft mounting hole is formed in the center of the rotor core body, a plurality of wire winding holes are formed in the rotor core body, and an included angle is formed between each wire winding hole and each rotor shaft mounting hole along the direction of the central shaft of the rotor core; the upper cover includes the base to and set up the abrupt ring on the base, the abrupt ring falls into inside and outside to the base, outside equipartition is provided with a plurality of first income gas pockets, inside middle part is provided with the through-hole, the epitaxial equipartition of through-hole is provided with a plurality of second income gas pockets, the lower cover is bowl form back-off and installs in motor main body, the terminal surface of lower cover is provided with a plurality of radial baffles, is provided with the air vent between a plurality of baffles are adjacent.

According to the technical scheme, the number of the wire grooves is set to be 16, and the number of the wire winding holes is set to be N.

According to the technical scheme, the angle is further improved, and the degree of the included angle is set to be 360/N degrees.

According to the technical scheme, the number of the winding holes is 24.

According to the technical scheme, the improved stator core is further improved, a plurality of convex riveting parts are uniformly distributed on one surface of each stator piece, a plurality of riveting grooves matched with the riveting parts are formed in the other surface of each stator piece, and the plurality of stator pieces are fixedly connected into the stator core body through the riveting parts and the riveting grooves.

According to the technical scheme, the improved structure is characterized in that a plurality of reinforcing ribs extending from the outer edge of the through hole to the protruding ring are arranged in the upper cover, and the reinforcing ribs are abutted to the protruding ring.

According to the technical scheme, the motor fixing device is further improved, and a plurality of fixing holes for installing and positioning the motor are formed in the protruding ring.

According to the technical scheme, the first air inlet hole or the second air inlet hole is further improved, and is in an arc shape.

According to the technical scheme, the ventilation hole is further improved, the ventilation hole is fan-shaped, and the outer edge of the ventilation hole is overlapped with the outer edge of the lower cover.

The invention has the beneficial effects that:

1. according to the invention, the rotor core body is provided with the plurality of winding holes forming included angles with the rotor shaft mounting hole along the central shaft direction of the rotor core body, so that the stress on the same winding hole is stable when the rotor core body runs in the stator core body, the traditional structural mode that the winding hole is parallel to the wire slot is replaced, and the problem that the output current is unstable and low in efficiency due to unstable force between the winding hole and the wire slot during running is solved.

2. Cup joint upper cover and the lower cover at motor main part both ends respectively through the setting, the upper cover includes the base to and set up the abrupt ring on the base, the base falls into inside and outside to the abrupt ring, outside equipartition is provided with a plurality of first income gas pockets, inside middle part is provided with the through-hole, the epitaxial equipartition of through-hole is provided with a plurality of second income gas pockets, the lower cover is the bowl form back-off and installs in motor main part, the terminal surface of lower cover is provided with a plurality of radial baffles, be provided with the air vent between a plurality of baffles are adjacent. Through set up first income gas pocket, second income gas pocket, air vent on upper cover and lower cover, improve the inside circulation of air of motor, when the bulk strength can satisfy the requirement, have good ventilation effect.

Drawings

The following is further described with reference to the accompanying drawings and examples.

Fig. 1 is a schematic structural view of the present invention.

FIG. 2 is a schematic diagram of the core structure of the present invention.

FIG. 3 is another structural schematic of the core structure of the present invention.

FIG. 4 is a schematic view of the internal structure of the core structure of the present invention.

Fig. 5 is a schematic structural view of the motor main body of the present invention.

Fig. 6 is another structural schematic view of the motor main body of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

Referring to fig. 1 to 6, an asynchronous capacitor operation motor includes a motor main body 7, and a core structure disposed inside the motor main body 7, the motor main body 7 includes an upper cover 8 and a lower cover 9 respectively sleeved at two ends of the motor main body 7, and is characterized in that: the core structure comprises a stator core body 1 and a rotor core body 2, wherein the stator core body 1 is of a cylindrical structure formed by axially overlapping a plurality of identical annular stator sheets, the outer contour of the stator core body 1 is formed by four straight line segments which are opposite to each other in pairs and are parallel to each other and four circular arcs which are opposite to each other in pairs, a plurality of wire slots 3 are uniformly distributed on the inner contour of the stator core body 1, the rotor core body 2 is positioned in the stator core body 1, a rotor shaft mounting hole 5 is arranged at the center of the rotor core body 2, a plurality of wire winding holes 4 are formed in the rotor core body 2, and the wire winding holes 4 form included angles with the rotor shaft mounting hole 5 along the central axis direction of the rotor core body 2; preferably, the number of the wire grooves 3 in the invention is 16, the shape is a flat-bottom groove structure, and the main part size is as follows: the groove depth is 12.5mm, the width of the groove opening is 2.2mm, and the width of the groove shoulder is 5.5 mm; the number of winding hole 4 sets up to 24, and the shape sets up to the pear shape groove structure, and the main part size is as follows: the height of the notch is 4.08mm, the depth of the groove is 5.89mm, the width of the notch is 0.8mm, the upper radius of the circular groove is 1.57mm, and the lower radius of the circular groove is 0.8 mm; the included angle between the winding hole 4 and the rotor shaft mounting hole 5 along the central shaft direction of the rotor core body 2 is 15 degrees, and by using the structure, when the rotor core body 2 runs in the stator core body 1, the stress of the same winding hole 4 on the upper part is constant and stable, so that the stable and efficient current output by a generator is facilitated. The upper cover 8 comprises a base and a protruding ring 10 arranged on the base, the protruding ring 10 divides the base into an inner part and an outer part, a plurality of first air inlet holes 11 are uniformly distributed on the outer part, a through hole is formed in the middle of the inner part, a plurality of second air inlet holes 12 are uniformly distributed on the outer periphery of the through hole, the lower cover 9 is installed on the motor main body 7 in a bowl-shaped inverted buckle mode, a plurality of radial partition plates 13 are arranged on the end face of the lower cover 9, and air vent holes 14 are formed between adjacent partition plates 13; through set up first income air pocket 11, second income air pocket 12, air vent 14 on upper cover 8 and lower cover 9, improve the inside circulation of air of motor, when overall strength can satisfy the requirement, have good ventilation effect.

According to the technical scheme, the stator core body is further improved, a plurality of protruding riveting parts 6 are uniformly distributed on one surface of each stator piece, a plurality of riveting grooves matched with the riveting parts 6 are formed in the other surface of each stator piece, and the plurality of stator pieces are fixedly connected into the stator core body 1 through the riveting parts 6 and the riveting grooves.

According to a further improvement of the above technical solution, in order to improve the mechanical strength of the upper cover 8, a plurality of ribs 15 extending from the outer edge of the through hole to the protruding ring 10 are provided inside the upper cover 8, and the ribs 15 are in contact with the protruding ring 10.

According to the above technical solution, a plurality of fixing holes 16 for installing and positioning the motor are provided on the protruding ring 10 in order to fix the motor.

According to a further improvement of the above technical solution, the first air inlet hole 11 or the second air inlet hole 12 has a circular arc shape in order to increase the air flow rate.

According to the technical scheme, the ventilation holes 14 are in a fan shape for facilitating heat dissipation, and the outer edges of the ventilation holes 14 are overlapped with the outer edge of the lower cover 9.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of 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, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. The utility model provides an asynchronous capacitor operation motor, includes the motor main part to and set up the core structure in the motor main part is inside, the motor main part is including cup jointing upper cover and the lower cover at the motor main part both ends respectively, its characterized in that: the core structure comprises a stator core body and a rotor core body, wherein the stator core body is of a cylindrical structure formed by axially stacking a plurality of identical annular stator sheets, the outer contour of the stator core body is formed by four straight line sections which are opposite to each other in pairs and are parallel to each other and four circular arcs which are opposite to each other in pairs, a plurality of wire grooves are uniformly distributed on the inner contour of the stator core body, the rotor core body is positioned in the stator core body, a rotor shaft mounting hole is formed in the center of the rotor core body, a plurality of wire winding holes are formed in the rotor core body, and an included angle is formed between each wire winding hole and each rotor shaft mounting hole along the direction of the central shaft of the rotor core; the upper cover includes the base to and set up the abrupt ring on the base, the abrupt ring falls into inside and outside to the base, outside equipartition is provided with a plurality of first income gas pockets, inside middle part is provided with the through-hole, the epitaxial equipartition of through-hole is provided with a plurality of second income gas pockets, the inside of upper cover be provided with a plurality ofly by the through-hole outer fringe to the strengthening rib that the abrupt ring extends, the strengthening rib with abrupt ring butt, be provided with a plurality of fixed orificess that are used for motor installation location on the abrupt ring, the lower cover is the bowl form back-off and installs in the motor main part, the terminal surface of lower cover is provided with a plurality of radial baffles, is provided with the air vent between a plurality of baffles are adjacent.

2. An asynchronous capacitively operated machine as claimed in claim 1, characterized in that: the number of the wire grooves is set to be 16, and the number of the wire winding holes is set to be N.

3. An asynchronous capacitively operated machine as claimed in claim 2, characterized in that: the degree of the included angle is set to be 360/N degrees.

4. An asynchronous capacitively operated machine as claimed in claim 2, characterized in that: the number of the wire winding holes is 24.

5. An asynchronous capacitively operated machine as claimed in claim 1, characterized in that: one side of each stator piece is uniformly provided with a plurality of convex riveting parts, the other side of each stator piece is provided with a plurality of riveting grooves matched with the riveting parts, and the plurality of stator pieces are fixedly connected into a stator core body through the riveting parts and the riveting grooves.

6. An asynchronous capacitively operated machine as claimed in claim 1, characterized in that: the first air inlet hole or the second air inlet hole is arc-shaped.

7. An asynchronous capacitively operated machine as claimed in claim 1, characterized in that: the vent hole is fan-shaped, and the outer edge of the vent hole is overlapped with the outer edge of the lower cover.