CN213757903U - Food processor - Google Patents

Abstract

The application provides a cooking machine. The cooking machine includes the frame and locates cooking cup on the frame, be equipped with the stirring sword in the cooking cup, the frame includes the shell and locates motor in the shell. Wherein, the motor is a single-phase quadrupole series motor. The motor has main part and motor shaft, the main part is installed in the shell, the motor shaft orientation arrange the protruding extension of cup, be used for with the stirring sword is connected in order to drive the motion of stirring sword. The application provides a cooking machine, its motor are single-phase quadrupole series excited machine, and during the motor low-speed operation, the output torque decline of single-phase quadrupole series excited machine is less, can reduce the dead risk of card of stirring sword. Moreover, compared with two-pole series electrodes with the same performance, the single-phase four-pole series motor is lower in height, and further the overall height of the food processor can be reduced, so that the food processor can be used conveniently by a user.

Description

Food processor

Technical Field

The application relates to a small household electrical appliance field especially relates to a cooking machine.

Background

The food processor is a common electric kitchen appliance and generally comprises a motor, a stirring knife and a food processing cup, wherein the motor drives the stirring knife to stir food materials in the food processing cup so as to make drinks such as fruit juice, soybean milk, milk tea and porridge. For different food materials or different processing stages, the motor is often required to drive the stirring knife to operate at different rotating speeds. In the prior art, when the output rotating speed of the motor needs to be reduced, the input voltage of the motor is generally reduced. However, the motor of current cooking machine is two poles of the earth series excited machine usually, and the output torque of motor can be reduced by a wide margin to the reduction of input voltage, and the output torque of motor reduces and leads to stirring sword card to die easily for the motor generates heat and causes control by temperature change protection or burns out the motor. Moreover, the two-pole series motor is high, the height of the food processor adopting the motor is often high, and the food processor is inconvenient for users to use and is heavy.

Based on this, the prior art is in need of improvement.

SUMMERY OF THE UTILITY MODEL

The application provides a cooking machine has lower stirring sword card risk of dying when the motor low-speed operation, and the high lower user of being convenient for of cooking machine uses moreover.

The application provides a cooking machine, it includes the frame and locates cooking cup on the frame, be equipped with the stirring sword in the cooking cup, the frame includes the shell and locates motor in the shell, wherein, the motor is single-phase quadrupole series excited machine, the motor has main part and motor shaft, the main part is installed in the shell, the motor shaft orientation the cooking cup is protruding to be stretched, for with the stirring sword is connected and is moved in order to drive the stirring sword. The application provides a cooking machine, its motor are single-phase quadrupole series excited machine, and during the motor low-speed operation, the output torque decline of single-phase quadrupole series excited machine is less, can reduce the dead risk of card of stirring sword. Moreover, compared with two-pole series electrodes with the same performance, the single-phase four-pole series motor is lower in height, so that the overall height of the food processor can be reduced, the food processor can be conveniently used by a user, and the appearance is more attractive. In addition, owing to adopted single-phase quadrupole series excited machine can expand the function of cooking machine, function such as kneading dough, fried dish to can replace the higher brushless motor of cost, make low-cost multi-functional cooking machine become possible.

Optionally, the main body of the motor is flat. The main body part of the single-phase four-pole series motor can be arranged to be flat so as to reduce the height of the motor.

Optionally, a circuit board electrically connected to the motor is disposed in the housing, and a chopper circuit is disposed on the circuit board and used for changing an input voltage of the motor to change an output rotation speed of the motor. The input voltage of the motor is changed through the chopper circuit so as to change the output rotating speed of the motor, different rotating speed requirements of different food materials and different processing stages are met, and when the input voltage of the single-phase four-pole series motor is reduced, the output torque is reduced less.

Optionally, the main body portion includes a rotor winding, 4 stator windings uniformly surrounding the rotor winding, and a commutator and a brush electrically connecting the rotor winding and the stator windings. The number of the stator windings is 4, the stator windings are uniformly distributed, so that a magnetic field generated by electrifying the stator windings is more uniform, and the rotation of a rotor of the motor is more stable.

Optionally, 2 stator windings arranged oppositely in the 4 stator windings are connected in parallel.

Optionally, among the 4 stator windings, 2 adjacent stator windings have a heat dissipation space therebetween. The stator winding is 4 and has the heat dissipation space between 2 adjacent stator windings, more is favorable to the heat dissipation of motor, can reduce the temperature rise of motor.

Optionally, the commutator is fixed to the rotor winding, and the brush is fixed to the stator winding.

Optionally, the main body portion includes an upper bracket for carrying the stator winding and a lower bracket fixed below the upper bracket, and the upper bracket and/or the lower bracket are provided with fixing portions for fixing with the housing. The upper bracket is used for bearing the stator winding, and the lower bracket is fixed on the upper bracket so as to arrange the rotor winding, the commutator, the electric brush and other components between the upper bracket and the lower bracket, thereby facilitating the disassembly and assembly of the whole motor and the shell.

Optionally, the fixed part includes supporting ear, be equipped with the support column on the shell, the motor passes through supporting ear and support column's cooperation erect in the shell. The motor is fixed in the shell with the mode of erectting, and motor bottom is unsettled promptly, is convenient for set up parts such as fan blade in the motor bottom on the one hand, and on the difficult transmission to the frame of vibration of on the other hand motor, can reduce the holistic vibration of cooking machine.

Optionally, the frame is located arrange the cup below, arrange the cup with the frame is fixed as an organic whole perhaps arrange the removable placing of cup on the frame. To the integral type or split type cooking machine of placing from top to bottom of cooking cup and frame, adopt single-phase quadrupole series excited machine can reduce cooking machine's whole height.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

Fig. 1 is an exploded view of an embodiment of a food processor according to the present application.

Fig. 2 is a top view of a motor according to an embodiment of the food processor of the present application.

Fig. 3 is a side view of a motor according to an embodiment of the food processor of the present application.

Fig. 4 is a schematic circuit diagram of a motor according to an embodiment of the food processor of the present application.

Reference numerals:

100-food processor; 1-a housing; 11-upper shell; 111-cup holder; 12-a lower shell; 2, a motor; 21-a motor shaft; 22-a stator winding; 23-rotor windings; 24-an electric brush; 25-a commutator; 26-a circuit board; 271-upper support; 2711-support ears; 272-lower support; 28-fan blades; a 3-coupler; 4-cooking cup; 41-stirring knife.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below do not represent all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with aspects of the present application.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

A food processor according to the present application will be described in detail below with reference to the accompanying drawings. Features in the embodiments described below may be combined with each other without conflict.

Referring to fig. 1 to 4, a food processor 100 according to an embodiment of the present application includes a base and a food cup 4 disposed on the base, wherein a stirring blade 41 is disposed in the food cup 4. The engine base comprises a shell 1 and a motor 2 arranged in the shell 1. The motor 2 is a single-phase four-pole series motor, and the motor 2 has a main body portion and a motor shaft 21. The main part is installed in the shell 1, motor shaft 21 orientation arrange 4 cups protruding, be used for with stirring sword 41 is connected in order to drive the motion of stirring sword 41.

The cooking machine in this application embodiment, its motor 2 is single-phase quadrupole series excited machine, and when 2 low-speed operations of motor, the output torque decline of single-phase quadrupole series excited machine is less, can reduce the dead risk of card of stirring sword 41. Moreover, compared with the two-pole series-excited electrode with the same performance, the single-phase four-pole series-excited motor has a lower height, so that the overall height of the food processor 100 can be reduced, the use by a user is facilitated, and the appearance is more attractive. In addition, owing to adopted single-phase quadrupole series excited machine can expand the function of cooking machine, function such as kneading dough, fried dish to can replace the higher brushless motor of cost, make low-cost multi-functional cooking machine become possible.

Referring to fig. 1, in the present embodiment, the base and the cooking cup 4 are separated. The cooking cup 4 is arranged on the machine base in a removable mode. The housing 1 of the base is provided with a containing space for containing components such as the motor 2, the power circuit board, the operation control circuit board and the like. The shell 1 is a plastic part and comprises an upper shell 11 and a lower shell 12, wherein the upper shell 11 is installed above the lower shell 12 in a butt joint mode. The upper shell 11 and the lower shell 12 can be connected and fixed by one or more connecting methods such as a clamping rib, a buckle, a screw and the like. The housing 1 includes an upper case 11 and a lower case 12 which are detachable, and can facilitate assembly of the motor 2, a power circuit board, an operation control circuit board, and the like. When assembling, the upper case 11 and the lower case 12 are separated in the up-down direction, and the motor 2, the power supply circuit board, the operation control circuit board and other components to be installed inside the housing 1 are installed on the lower case 12 from the opening on the upper portion of the lower case 12, or installed on the upper case 11 from the opening on the lower portion of the upper case 11, and then the upper case 11 and the lower case 12 are assembled together. For the installation of parts such as cooperation motor 2, power supply circuit board, operation control circuit board, can set up corresponding fixed knot structure on the inferior valve 12, structures such as support column, brace rod, buckle. For example, the motor 2 is erected on a support column and is locked and fixed through a screw; for another example, the power circuit board and the operation control circuit board are supported on the support ribs and are clamped and fixed by the buckles. The upper shell 11 covers the motor 2, the power supply circuit board, the operation control circuit board and other components, and can play a role in protection. Still be formed with cup 111 on the epitheca 11, cup 111 with the shape phase-match of cooking cup 4 bottom to the bottom that supplies cooking cup 4 can steadily place on the frame. In this embodiment, the bottom of the cooking cup 4 is substantially cylindrical, and the cup holder 111 is substantially cylindrical to accommodate the bottom of the cooking cup 4. The motor shaft 21 protrudes out of the bottom wall of the cup holder 111 to be connected with the stirring blade 41 through the coupler 3, and a microswitch and a positioning structure are further arranged on the bottom wall of the cup holder 111. Microswitch can place trigger circuit in cup stand 111 and switch on at cooking cup 4, location structure can play the effect of counterpoint when cooking cup 4 places in cup stand 111.

In other embodiments, the food processor 100 may also be an all-in-one machine. Namely, the machine base is positioned below the cooking cup 4 and the machine base are integrated. The split type or all-in-one type is two common food processor types, and the description is omitted here. The single-phase quadrupole series excited machine that adopts among this application technical scheme, its shape is the platykurtic, no matter be to cooking cup 4 and frame for the integral type cooking machine or split type cooking machine of placing from top to bottom, all can reduce cooking machine's whole height.

Referring to fig. 2 to 4, the main body of the motor 2 includes a rotor winding 23, 4 stator windings 22 uniformly surrounding the rotor winding 23, and a commutator 25 and a brush 24 for electrically connecting the rotor winding 23 and the stator windings 22, wherein the commutator 25 is fixed to the rotor winding 23, and the brush 24 is fixed to the stator windings 22. The brush 24 is typically a carbon brush. Referring to fig. 4, the motor 2 is a single-phase series motor, and the working principle thereof is as follows: the stator winding 22 is electrified to generate a magnetic field, the electrified rotor winding 23 is stressed to rotate in the magnetic field, the direction of current in the rotor winding 23 can be changed by the cooperation of the commutator 25 and the electric brush 24 in the rotating process, so that the rotor winding 23 can continuously rotate along one direction, and the rotor winding 23 is fixed with the motor shaft 21, so that the motor shaft 21 can be driven to continuously rotate, and the power output is realized. Motor 2 in this application is single-phase quadrupole series excited machine, and its stator winding 22 is 4 and evenly distributed for the magnetic field that stator winding 22 circular telegram produced is more even, and motor 2's rotor is rotatory more steady. Of the 4 stator windings 22, 2 stator windings 22 that are disposed oppositely are connected in parallel. The motor 2 is electrically connected to a circuit board 26, the circuit board 26 is a power supply circuit board as described above, and a chopper circuit is provided on the circuit board 26, and the chopper circuit is configured to change an input voltage of the motor 2 to change an output rotation speed of the motor 2. When the input voltage of the motor 2 is changed through the chopper circuit so as to change the output rotating speed of the motor 2 and meet different rotating speed requirements of different food materials and different processing stages, the input voltage of the single-phase four-pole series motor is reduced, and the output torque is reduced slightly. That is, when the input voltage of the motor 2 is reduced by the chopper method, the output torque of the four-pole series motor is much larger than that of the two-pole series motor of the same performance. That is, when the same voltage is reduced by chopping, the output torque of the two-pole series motor is greatly affected, so that the output torque thereof is greatly reduced, and the output torque of the four-pole series motor is less affected, so that the output torque thereof is reduced to a limited extent. Therefore, the adoption of the four-pole series motor can reduce the blocking risk of the stirring blade 41 under the low-speed operation of the motor 2. Referring to fig. 2, among the 4 stator windings 22, 2 adjacent stator windings 22 have a heat dissipation space therebetween. Compared with a two-pole series motor with 2 stator windings, the four-pole series motor has 4 stator windings 22, and a heat dissipation space is arranged between every two adjacent stator windings, so that the number of the heat dissipation spaces can be increased, the heat dissipation of the motor 2 is facilitated, and the temperature rise of the motor 2 can be effectively reduced.

Referring to fig. 3, the main body of the motor 2 is flat. The main body portion of the single-phase four-pole series motor can be set flat, so that the height of the motor 2 can be reduced. The main body portion is flat, that is, the height of the main body portion of the motor 2 is smaller than the radial dimension thereof. In this embodiment, the main body portion includes an upper bracket 271 carrying the stator winding 22 and a lower bracket 272 fixed below the upper bracket 271. The upper rack 271 includes a horizontal top plate and a plurality of upper fixing arms extending outwardly from the edge of the top plate, the upper fixing arms extending obliquely downwardly outwardly from the top plate, so that the upper rack 271 is shaped substantially like a shallow dish with an opening turned upside down, but unlike the conventional shallow dish, the sidewall of the conventional shallow dish is a continuous complete sidewall, and the sidewall of the upper rack 271 in this embodiment is a plurality of upper fixing arms. Similar to the upper rack 271, the lower rack 272 includes a horizontal bottom plate and a plurality of lower fixing arms extending outwardly from the edges of the bottom plate, the lower fixing arms extending obliquely upwardly from the bottom plate, such that the lower rack 272 is generally shaped like a shallow tray with an upward opening, and similarly, unlike the conventional shallow tray, the sidewall of the conventional shallow tray is a continuous complete sidewall, while the sidewall of the lower rack 272 in this embodiment is a plurality of lower fixing arms. The upper fixing arm of the upper bracket 271 and the lower fixing arm of the lower bracket 272 are fixed by screw connection, and the stator winding 22 and the rotor winding 23 of the motor 2, and the commutator 25 and the brush 24 are located between the top plate of the upper bracket 271 and the bottom plate of the lower bracket 272. The lower bracket 272 is fixed on the upper bracket 271 so as to place the rotor winding 23, the commutator 25, the brush 24 and other components between the upper and lower brackets 271, 272, thereby facilitating the assembly and disassembly of the whole motor 2 and the casing 1. The upper bracket 271 or the lower bracket 272 is further provided with a fixing part for fixing the motor 2 and the housing 1. In this embodiment, the fixing portion is a supporting ear 2711 formed at the free end of the upper fixing arm of the upper support 271, a supporting pillar is disposed on the housing 1, and the motor 2 is erected in the housing 1 through the matching of the supporting ear 2711 and the supporting pillar. The motor 2 is fixed in the shell 1 with the mode of erectting, and motor 2 bottom is unsettled promptly, is convenient for set up parts such as fan blade 28 in motor 2 bottom on the one hand, and on the other hand motor 2's vibration is difficult for transmitting to the frame, can reduce the holistic vibration of cooking machine 100. The fan blade 28 is arranged below the lower bracket 272, and the fan blade 28 is connected with the lower end of the motor shaft 21 and is driven by the motor shaft 21 to rotate. In this embodiment, the rotation of the fan blade 28 generates negative pressure at the bottom of the motor 2, and drives the airflow to flow through the motor 2 from top to bottom, so as to dissipate heat of the motor 2. In other embodiments, the fan 28 may be configured to rotate to drive the airflow to move upward, i.e., blow from bottom to top, so as to dissipate heat from the motor 2.

As can be known from the above description of the specific embodiment, in the food processor 100 provided by the present application, the motor 2 is the single-phase four-pole series motor, and when the motor 2 operates at a low speed, the output torque of the single-phase four-pole series motor decreases less, so that the risk of the dead locking of the stirring blade 41 can be reduced. Moreover, compared with the two-pole series-excited electrode with the same performance, the single-phase four-pole series-excited motor has a lower height, so that the overall height of the food processor 100 can be reduced for a user to use.

Although the present application has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application, and all changes, substitutions and alterations that fall within the spirit and scope of the application are to be understood as being covered by the following claims.

Claims (10)

1. The utility model provides a cooking machine, includes the frame and locates cooking cup (4) on the frame, be equipped with stirring sword (41) in cooking cup (4), the frame includes shell (1) and locates motor (2) in shell (1), a serial communication port, motor (2) are single-phase quadrupole series excited machine, motor (2) have main part and motor shaft (21), the main part is installed in shell (1), motor shaft (21) orientation cooking cup (4) protruding the stretching, be used for with stirring sword (41) are connected and are moved in order to drive stirring sword (41).

2. The food processor as claimed in claim 1, wherein the main body part of the motor (2) is flat.

3. The food processor as claimed in claim 1, wherein a circuit board (26) electrically connected with the motor (2) is arranged in the housing (1), and a chopper circuit is arranged on the circuit board (26) and used for changing the input voltage of the motor (2) so as to change the output rotating speed of the motor (2).

4. The food processor of claim 1, wherein the main body portion comprises a rotor winding (23), 4 stator windings (22) uniformly surrounding the rotor winding (23), and a commutator (25) and a brush (24) electrically connecting the rotor winding (23) and the stator windings (22).

5. The food processor of claim 4, wherein 2 stator windings (22) of the 4 stator windings (22) that are oppositely disposed are connected in parallel.

6. The food processor of claim 5, wherein the 4 stator windings (22) have a heat dissipation space between the adjacent 2 stator windings (22).

7. The food processor of claim 4, wherein the commutator (25) is fixed to the rotor winding (23) and the brush (24) is fixed to the stator winding (22).

8. The food processor of claim 4, wherein the main body part comprises an upper bracket (271) for carrying the stator winding (22) and a lower bracket (272) fixed below the upper bracket (271), and the upper bracket (271) and/or the lower bracket (272) is provided with a fixing part for fixing with the housing (1).

9. The food processor as claimed in claim 8, wherein the fixing portion comprises a support ear (2711), a support column is provided on the housing (1), and the motor (2) is erected in the housing (1) through the support ear (2711) and the support column.

10. The food processor according to any one of claims 1 to 9, wherein the base is located below the food cup (4), the food cup (4) is fixed with the base into a whole or the food cup (4) is removably placed on the base.

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