CN215383415U

CN215383415U - Food processor with compact structure and motor for food processor

Info

Publication number: CN215383415U
Application number: CN202120349602.3U
Authority: CN
Inventors: 王旭宁; 林小财; 吴家良
Original assignee: Joyoung Co Ltd
Current assignee: Joyoung Co Ltd
Priority date: 2021-02-06
Filing date: 2021-02-06
Publication date: 2022-01-04
Anticipated expiration: 2031-02-06

Abstract

The utility model discloses a food processor with compact structure and a motor for the food processor, wherein the food processor comprises a host machine for accommodating the motor and a stirring cup arranged on the host machine, a stirring knife driven by the motor is arranged in the stirring cup, the motor comprises a stator, a rotor, a commutator, a carbon brush assembly surrounding the commutator and a bracket for fixing the stator, the rotor, the commutator and the carbon brush assembly, the stator comprises a plurality of stator pole shoes arranged along the circumferential direction, the included angle alpha between the adjacent stator pole shoes is less than or equal to 90 degrees, the stator pole shoes are wound with stator coils, and the stator coils and the commutator are arranged along the axial direction in a superposition way. The height of the motor in the axial direction is compressed, so that the stator coil wound on the stator pole shoe is overlapped with the commutator to reduce the overall height of the motor, and the overall height of the food processor can be reduced when the motor is installed on a host machine, so that the food processor is miniaturized.

Description

Food processor with compact structure and motor for food processor

Technical Field

The utility model belongs to the field of food processing devices, and particularly relates to a food processing machine with a compact structure and a motor for the food processing machine.

Background

At present, a two-pole series motor is generally used as a power device for a food processor; the two-pole series excited motor has the structural characteristic that the axial height of the motor, particularly the axial height of a rotor, is superposed by the sizes of parts such as a bearing, an iron core, a coil, a commutator and the like, so that the axial height of the motor is higher. The food processing machine using the motor has high gravity center during working, large vibration amplitude of the cup body above and unstable operation.

In order to realize the miniaturization of the food processor, the key point is to reduce the overall height of the motor, so as to reduce the overall height of the motor, for example, the overall height of the motor is reduced by reducing the heights of an iron core, a stator and a rotor; however, for the same type of motor, the heights of the motor support, the iron core, the rotor, the stator, the commutator and other components are fixed, so that the motor can be flattened only by compressing the space between the parts, thereby reducing the height of the motor.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned disadvantages, the present invention provides a food processor and a motor for a food processor having a compact structure, which can reduce the height of the motor to reduce the overall height of the food processor.

The utility model is realized by the following technical scheme:

the utility model provides a food preparation machine motor, food preparation machine is including the host computer that holds the motor and set up in the stirring cup of host computer, be equipped with the stirring sword by motor drive in the stirring cup, the motor includes the stator, relative stator pivoted rotor, the commutator, encircle the carbon brush subassembly and the fixed stator of commutator, the rotor, the support of commutator and carbon brush subassembly, the stator includes the stator pole shoe that the several set up along circumference, contained angle alpha between the adjacent stator pole shoe is less than or equal to 90, stator pole shoe winding has, stator coil and commutator are along axial direction coincidence setting. The height of the motor in the axial direction is compressed, so that the stator coil wound on the stator pole shoes is arranged in a superposition manner with the commutator, the overall height of the motor is reduced, when the motor is installed on a host machine, the overall height of the food processor can be reduced, the food processor is miniaturized, meanwhile, the axial height of the motor is reduced, the included angle between the adjacent stator pole shoes is reduced, if the included angle between the adjacent stator pole shoes is too large, the span of the stator coil is large when the stator coil is used for hanging wires, and the included angle between the adjacent stator pole shoes is too large, the distance between the commutator and the stator is shortened, and the wires can not be hung and welded normally, the reduction of the axial height of the motor is realized.

Further, the rotor includes a rotor core forming a plurality of rotor slots and a rotor coil wound to each of the rotor slots, and the commutator has a commutator slot corresponding to the rotor coil.

Further, the number of rotor slots is q₁，18≤q₁Less than or equal to 24. Number of rotor slots q₁Is set to q₁The voltage between the commutator segments is ensured to be lower, the cogging torque can be reduced, and the running stability of the motor is improved; number of rotor slots q₁Is set to q₁Less than or equal to 24, the process is simplified, the material utilization rate is improved, and the cost is lower.

Further, the number of rotor slots is q₁The number of commutator slots is q₂，q₂＝2q₁。

Further, the carbon brush subassembly includes four carbon brushes along circumference equipartition in the support, and each carbon brush and commutator butt, and the contained angle between the adjacent carbon brush is 90. Compared with the two carbon brush composite hanging wire, the four carbon brushes are arranged, so that the current density of the carbon brushes is low, the sparks are small, the wire hanging of the commutator is simple, and the reliability is high.

Further, the motor is a four-pole series motor. Compared with a two-pole motor, the utilization rate of the winding material of the two-pole motor is less than 30%, the utilization rate of the winding material of the four-pole motor can reach 40%, the utilization rate of the winding is improved, the height and the cost of the motor are reduced, the running efficiency of the motor is improved, and the cost is lower.

Further, the distance between the commutator and the rotor in the vertical direction is L1, the distance between adjacent stator pole shoes is L2, and the ratio of L1 to L2 is 1: 10-1: 20. If the ratio between L1 and L2 is too large, namely the distance between the adjacent stator pole shoes is too small, the stator coil is inconvenient to wind on the stator pole shoes; if the ratio between L1 and L2 is too small, that is, the distance between the commutator and the rotor in the vertical direction is too small, the commutator easily collides with the rotor, and the service life of the motor is influenced.

Furthermore, L1 is more than or equal to 2mm and less than or equal to 10 mm.

Furthermore, the height of the stator along the axial direction is H, the length of the stator along the radial direction is D, and the ratio of H to D is 1: 5-1: 12.5. If the ratio of H to D is too large, namely the length of the stator in the radial direction is too small, correspondingly, the distance between the stator pole shoes on the stator is also correspondingly reduced, and the stator coil is not beneficial to winding; if the ratio between H and D is too small, the height of the stator along the axial direction is too large, which is not beneficial to reducing the height of the motor.

The application still provides a compact structure's food preparation machine, including host computer, fan and foretell food preparation machine motor, the host computer is formed with the chamber that holds that matches with the motor shape, and the fan is located the motor shaft that holds the chamber and connect to the motor, and food preparation machine is still including setting up in the stirring cup of host computer, and the stirring cup holds the stirring sword of being connected with the motor shaft electricity of motor.

Drawings

FIG. 1 is a schematic diagram illustrating the construction of an exemplary embodiment of a food processor of the present invention;

FIG. 2 is a schematic diagram illustrating an exemplary embodiment of an electric machine according to the present invention;

FIG. 3 is a schematic view illustrating the combination structure of the motor of FIG. 2 according to the present invention;

FIG. 4 is a schematic diagram illustrating the structure of an exemplary embodiment of a stator of the present invention;

FIG. 5 is a schematic top view illustrating an exemplary embodiment of a stator of the present invention;

FIG. 6 is a schematic view illustrating the structure of another exemplary embodiment of the rotor according to the present invention;

fig. 7 is a schematic structural view illustrating an exemplary embodiment of a carbon brush according to the present invention.

Reference numerals:

1. the motor comprises a main machine body 11, an accommodating cavity 2, a motor 21, a stator 211, a stator pole shoe 22, a rotor 221, a rotor iron core 222, a rotor groove 23, a commutator 24, a carbon brush 25, a support 251, an upper support 252, a lower support 3, a stirring cup 4 and a fan.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the terms of orientation such as left, right, up, down, front and back in the embodiments of the present invention are only relative concepts or are referred to a normal use state of the product, i.e., a traveling direction of the product, and should not be considered as limiting.

In addition, the dynamic terms such as "relative movement" mentioned in the embodiments of the present invention include not only a positional change but also a movement in which a state changes without a relative change in position such as rotation or rolling.

Finally, it is noted that when an element is referred to as being "on" or "disposed" to another element, it can be on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

As shown in fig. 1 to 3, a motor for a food processor, the food processor includes a main machine 1 for accommodating a motor 2 and a stirring cup 3 disposed in the main machine 1, a stirring blade driven by the motor 2 is disposed in the stirring cup 3, the motor 2 includes a stator 21, a rotor 22 rotating relative to the stator 21, a commutator 23, a carbon brush assembly surrounding the commutator 23, and a bracket 25 for fixing the stator 21, the rotor 22, the commutator 23 and the carbon brush assembly, the stator 21 includes a plurality of stator pole shoes 211 disposed along a circumferential direction, an included angle α between adjacent stator pole shoes 211 is less than or equal to 90 °, the stator pole shoes 211 are wound with stator coils, and the stator coils and the commutator 23 are disposed along an axial direction; the motor 2 is arranged in the main machine 1 and used for driving parts in the food processor to work, and the main machine 1 needs to be matched with the shape of the motor 2 in order to better protect the motor 2, so that when the height of the motor 2 is too high, the miniaturization design of the food processor cannot be realized; for the motor 2, the height of the vertical direction is mainly the superposition of the sizes of all parts, the height of the motor 2 in the axial direction is compressed, so that the stator coil wound on the stator pole shoes 211 is overlapped with the commutator 23, the height of the whole motor 2 is reduced, the height of the whole food processor can be reduced when the motor 2 is installed on the main machine 1, the miniaturization of the food processor is realized, meanwhile, the included angle between the adjacent stator pole shoes 211 is reduced when the axial height of the motor 2 is reduced, if the included angle between the adjacent stator pole shoes 211 is overlarge, the span of the stator coil is large when the wire is hung, and the distance between the adjacent stator pole shoes 211 is overlarge, the distance between the commutator 23 and the stator 21 is shortened, the wire hanging and the welding can not be normally finished, the included angle between the adjacent stator pole shoes 211 and the distance between the commutator 23 and the stator 21 are reduced simultaneously in the application, the steps of winding, welding and the like are firstly completed, then the distance between the commutator 23 and the stator 21 is compressed, and the reduction of the axial height of the motor 2 is realized on the premise of not influencing the normal work of the motor 2; the included angle between adjacent stator pole shoes 211 is an extended line perpendicular to the extending direction of any one stator pole shoe 211 and intersects with the extended line of the adjacent stator pole shoe 211, and the included angle between the extended lines of the adjacent stator pole shoes 211 is an included angle between the adjacent stator pole shoes 211.

Referring to fig. 2, the bracket 25 includes an upper bracket 251 and a lower bracket 252, and the upper bracket 251 and the lower bracket 252 surround to fix the stator 21, the rotor 22, the commutator 23, and the carbon brush assembly.

The application also provides a food processor with a compact structure, which comprises a host machine 1, a fan 4 and the motor 2 for the food processor, wherein the host machine 1 is provided with an accommodating cavity 11 matched with the shape of the motor 2, the fan 4 is positioned in the accommodating cavity 11 and connected to the shaft of the motor 2, the food processor also comprises a stirring cup 3 arranged on the host machine 1, and the stirring cup 3 is provided with a stirring knife electrically connected with the shaft of the motor 2; the accommodating cavity 11 is matched with the motor 2 in shape, the height of the main machine 1 can be reduced by installing the motor 2 with the reduced axial height into the accommodating cavity 11, so that the overall height of the food processor is reduced, the center of gravity of the food processor is lower when the food processor works, and the food processor is not easy to shake and has good stability when components such as a stirring knife, a fan 4 and the like rotate; wherein, host computer 1 forms in this application holds chamber 11 for highly matching with motor 2 with the motor 2 shape matching, reduces host computer 1's height, holds chamber 11 and is greater than motor 2 along the length of horizontal direction, leaves installation space for other parts.

As shown in fig. 4 and 5, preferably, the motor 2 is a four-pole series motor, which has four stator pole shoes 211, the four stator pole shoes 211 are equally arranged along the circumferential direction, and the included angle between the adjacent stator pole shoes 211 is 90 °, it can be understood that the more the number of poles of the motor 2 is, the easier the flattening is to be achieved, for example, the motor can also be selected as a six-pole series motor, an eight-pole series motor, etc.; meanwhile, the cost is integrated, and the four-pole series excitation motor is preferred; meanwhile, compared with a two-pole series excited motor, after the two-pole series excited motor is flattened, because the two-pole series excited motor is compressed in the axial direction, the distance between the commutator and the iron core is too close, wire hanging and welding cannot be completed, the included angle between adjacent stator pole shoes 211 is reduced by increasing the number of poles of the motor, winding is convenient, and the wound stator coil and the commutator 23 are superposed in the axial direction, so that the overall height of the motor can be shortened, and compared with the two-pole series excited motor, the utilization rate of the winding material of the two-pole series excited motor is less than 30%, the utilization rate of the winding material of the four-pole series excited motor can reach 40%, the utilization rate of the winding is improved, the height and the cost of the motor 2 are reduced, the operating efficiency of the motor 2 is improved, the cost is lower, and the following explanation is made in detail by taking the four-pole series excited motor as an example.

The height of the stator 21 in the axial direction is H, the length of the stator 21 in the radial direction is D, and the ratio of H to D is 1: 5-1: 12.5; if the ratio between H and D is too large, that is, the length of the stator 21 in the radial direction is too small, accordingly, the distance between the stator pole shoes 211 on the stator 21 is also correspondingly reduced, which is not beneficial to winding the stator coil; if the ratio between H and D is too small, the height of the stator 21 along the axial direction is too large, which is not beneficial to reducing the height of the motor 2; preferably, the outer diameter of the stator 21 is 120mm, and the length of the stator 21 in the radial direction is 10 mm.

As shown in fig. 5 and 6, the distance between the commutator 23 and the rotor 22 in the vertical direction is L1, the distance between adjacent stator pole shoes 211 is L2, and the ratio of L1 to L2 is 1: 10-1: 20; the distance between the adjacent stator pole shoes 211 is a connecting line of two center points between the adjacent stator pole shoes 211, and if the ratio between L1 and L2 is too large, the distance between the adjacent stator pole shoes 211 is too small, which is inconvenient for winding a stator coil on the stator pole shoes 211; if the ratio between L1 and L2 is too small, that is, the distance between the commutator 23 and the rotor 22 in the vertical direction is too small, the commutator 23 easily collides with the rotor 22, and the service life of the motor 2 is affected; preferably, L1 is larger than or equal to 2mm and smaller than or equal to 10mm, and compared with the size of 15 mm-50 mm in the conventional motor 2, the distance between the commutator 23 and the rotor 22 can be greatly reduced, so that the motor 2 is flattened.

As shown in fig. 7, the carbon brush assembly includes four carbon brushes 24 uniformly distributed on the bracket 25 along the circumferential direction, each carbon brush 24 abuts against the commutator 23, and an included angle between adjacent carbon brushes 24 is 90 °; compared with the two carbon brushes 24 composite hanging wire, the four carbon brushes 24 are arranged, so that the current density of the carbon brushes 24 is low, sparks are small, and the commutator 23 is simple in hanging wire and high in reliability.

As shown in fig. 2, 5 and 6, the rotor 22 includes a rotor core 221 forming a plurality of rotor slots 222 and a rotor 22 coil wound to each rotor slot 222, and the commutator 23 has a commutator 23 slot corresponding to the rotor 22 coil; the rotor slots 222 of the rotor core 221 are real slots, the slots of the commutator 23 are virtual slots, the virtual slots are in one real slot, and an upper layer side of a certain coil and a lower layer side of another coil exist at the same time, and a layer side of one coil is a virtual slot.

It can be understood that the four carbon brushes 24 shown in fig. 3 are uniformly distributed at 90 °, that is, the voltage V applied by the carbon brush 24 is 220V at an angle of 2390 ° of the commutator 23, and the inter-segment voltage E of the commutator 23 is V/q2 × 4, without counting the commutation short-circuit winding, and it can be known that the inter-segment voltage of the commutator 23 is inversely proportional to the number of slots of the commutator 23, and the larger the number of slots of the commutator 23, the smaller the inter-segment voltage, and the smaller the commutation spark of the motor 2.

Preferably, the number of rotor slots 222 is q₁，18≤q₁Less than or equal to 24. Number q of rotor slots 222₁Is set to q₁The voltage between the commutator 23 pieces is lower, the cogging torque can be reduced, and the running stability of the motor 2 is improved; number q of rotor slots 222₁Is set to q₁Less than or equal to 24, the process is simplified, the material utilization rate is improved, and the cost is lower.

For commutator 23, the number of rotor slots 222 is q₁The number of slots of the commutator 23 is q₂，q₂＝2q₁(ii) a Wherein q is₁The number of q is 18. ltoreq. q₁Not more than 24, correspondingly, 36 not more than q₂≤48。

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. The utility model provides a food preparation machine motor, food preparation machine is equipped with by motor drive's stirring sword including the host computer that holds the motor and setting up in the stirring cup of host computer in the stirring cup, its characterized in that, the motor includes the stator, relatively stator pivoted rotor, commutator, encircle the carbon brush subassembly and the fixing of commutator the stator the rotor the commutator with the support of carbon brush subassembly, the stator includes the stator pole shoe that the several set up along circumference, and is adjacent contained angle alpha between the stator pole shoe is less than or equal to 90, the stator pole shoe winding has stator coil, stator coil with the commutator sets up along axial direction coincidence.

2. The motor for a food processor of claim 1, wherein the rotor includes a rotor core forming a plurality of rotor slots and a rotor coil wound to each of the rotor slots, and the commutator has a commutator slot corresponding to the rotor coil.

3. The motor for food processing machines of claim 2 wherein the number of rotor slots is q₁，18≤q₁≤24。

4. The motor for food processing machines of claim 2 wherein the number of rotor slots is q₁The number of the commutator grooves is q₂，q₂＝2q₁。

5. The motor of claim 1, wherein the carbon brush assembly comprises four carbon brushes uniformly distributed on the bracket along a circumferential direction, each carbon brush abuts against the commutator, and an included angle between adjacent carbon brushes is 90 °.

6. The motor for food processing machines of claim 1, wherein said motor is a four-pole series motor.

7. The motor for the food processor as claimed in claim 1, wherein a distance between the commutator and the rotor in a vertical direction is L1, a distance between adjacent stator pole shoes is L2, and a distance between L1: L2 is 1:10 to 1: 20.

8. The motor for food processing machines of claim 7, wherein 2mm L1 mm 10 mm.

9. The motor for food processing machines of claim 1, wherein the stator has a height H in the axial direction, a length D in the radial direction, and H: D is 1:5 to 1: 12.5.

10. A food processor of compact construction, comprising a main body, a fan and a motor for a food processor according to any of claims 1-9, the main body being formed with a receiving chamber matching the shape of the motor, the fan being located in the receiving chamber and being connected to the motor shaft of the motor, the food processor further comprising a blending cup provided in the main body, the blending cup receiving a blending blade electrically connected to the motor shaft of the motor.