CN213757941U - 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 is including being used for the drive the motor of stirring sword motion. The motor is a single-phase four-pole series motor, and comprises a rotor winding, a stator winding arranged around the rotor winding, a commutator and a carbon brush which electrically connect the rotor winding and the stator winding, and a lower bracket positioned below the stator winding. And the lower support is provided with a carbon brush frame corresponding to the carbon brush and used for fixing the carbon brush and a carbon powder discharging hole positioned below the carbon brush. The application provides a cooking machine whole height hangs down and is convenient for the user to use. Moreover, the carbon brush of the motor is fixed reliably, carbon powder generated by abrasion of the carbon brush can be discharged in time, and poor pressure resistance of products caused by accumulation of the carbon powder is avoided.

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. The motor of the existing food processor is generally a two-pole series excited motor, which mainly comprises a motor support, a rotor winding, two stator windings, a commutator and a carbon brush, wherein the carbon brush is mostly fixed by inserting and clamping a carbon brush holder into a square hole on the side wall of the motor support. However, the two-pole series motor is high, so that a food processor adopting the motor is high in height, heavy and inconvenient for users to use; moreover, the fixed manner of the carbon brush is not suitable for a relatively flat motor, which makes the height of the motor difficult to reduce.

Based on this, the prior art still needs to be improved.

SUMMERY OF THE UTILITY MODEL

The application provides a cooking machine, its motor height is lower and the fixed safe and reliable of carbon brush.

The application provides a cooking machine, include the frame and locate cooking cup on the frame, be equipped with the stirring sword in the cooking cup, the frame is including being used for the drive the motor of stirring sword motion, wherein, the motor is single-phase quadrupole series excited machine, the motor includes rotor winding, encloses to establish stator winding of rotor winding week side, general rotor winding with commutator and carbon brush that stator winding electricity is connected and be located the lower carriage of stator winding below, correspond on the lower carriage the carbon brush is equipped with and is used for fixing the carbon brush holder of carbon brush and is located the row carbon powder hole of carbon brush below. According to the food processor, the motor is the single-phase four-pole series motor, and 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 to facilitate use of a user; the lower support of the motor is provided with the carbon brush holder corresponding to the carbon brush, so that the carbon brush can be reliably fixed, the lower support of the motor is provided with the carbon powder discharging holes corresponding to the carbon brush, carbon powder generated by friction of the carbon brush can be discharged in time, and the phenomenon that the pressure resistance of a product is poor due to accumulation of the carbon powder is avoided.

Optionally, the carbon brush holder is fixed on the lower bracket in a clamping or screw connection mode, and the lower bracket is further provided with a limiting part for limiting the movement of the carbon brush holder. The carbon brush holder is fixed on the lower support and limits the movement of the carbon brush holder through the limiting part, so that the carbon brush is more reliably fixed.

Optionally, the lower frame comprises a bottom and a plurality of lower fixing arms extending outwards from the edge of the bottom, and the carbon brush holder is fixed on the bottom of the lower frame. The carbon brush holder is arranged at the bottom of the inner side of the lower fixed arm of the lower support, namely the carbon brush holder is arranged at the inner side of the lower support, the support is not required to be provided with a fixed hole, the height of the support can be reduced, and the carbon brush holder is suitable for a flat motor with lower height.

Optionally, the motor includes an upper bracket for carrying the stator winding, the lower fixing arm extends outward from the bottom of the lower bracket and toward the upper bracket, and one end of the lower fixing arm, which is far away from the bottom, is fixed on the upper bracket. 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 carbon brush and other components between the upper bracket and the lower bracket, thereby facilitating the integral disassembly and assembly of the motor.

Optionally, the number of the lower fixing arms is 4, the lower fixing arms are uniformly distributed on the edge of the bottom, and the number of the stator windings is 4, and the stator windings are correspondingly located between two adjacent lower fixing arms. The stator winding is 4 and is located between two adjacent lower fixed arms for have the heat dissipation space between the adjacent stator winding, more be favorable to the heat dissipation of motor, can reduce the temperature rise of motor.

Optionally, the lower bracket and the upper bracket are flat after being assembled. The lower support and the upper support are integrally flat after being assembled, so that the height of the motor is lower.

Optionally, the width of the carbon powder discharge hole is not less than the width of the carbon brush, and the length of the carbon powder discharge hole is not less than 3 mm. The carbon powder generated by carbon brush friction can be discharged from the carbon powder discharging hole to a great extent by the arrangement, so that the carbon powder is prevented from being accumulated.

Optionally, a fan blade is arranged below the lower support, and the fan blade rotates to drive airflow to flow from top to bottom. The fan blades rotate to drive airflow to flow so as to dissipate heat of the motor and reduce temperature rise of the motor, the airflow flows from top to bottom and can drive the carbon powder to be discharged downwards, and the carbon powder is prevented from flying upwards to affect performance of the motor.

Optionally, the base includes a circuit board electrically connected to the motor, and the circuit board is provided with a chopper circuit, where the chopper circuit is configured to change 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 motor is erected and fixed in the housing of the base through the upper bracket and/or the lower bracket. 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.

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 a combination diagram of an embodiment of a food processor according to the present application.

Fig. 2 is an exploded view of an embodiment of the food processor of the present application.

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

Fig. 4 is a sectional view of a motor according to an embodiment of the food processor of the present application.

Reference numerals:

100-food processor; 10-a machine base; 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-a carbon brush; 241-a carbon brush holder; 25-a commutator; 271-upper support; 2711-support ears; 2712-upper fixed arm; 2713-top; 272-lower support; 2720-carbon powder discharge holes; 2721-bottom; 2722-lower fixed arm; 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 10 and a food cup 4 disposed on the base 10. Be equipped with stirring sword 41 in the cooking cup 4, frame 10 is including being used for the drive the motor 2 of 41 motions of stirring sword, motor 2 is single-phase quadrupole series excited machine. The motor 2 includes a rotor winding 23, a stator winding 22 surrounding the rotor winding 23, a commutator 25 and a carbon brush 24 electrically connecting the rotor winding 23 and the stator winding 22, and a lower bracket 272 located below the stator winding 22. The lower bracket 272 is provided with a carbon brush holder 241 for fixing the carbon brush 24 and a carbon powder discharging hole 2720 located below the carbon brush 24 corresponding to the carbon brush 24.

The application provides a cooking machine 100, its motor 2 is single-phase quadrupole series excitation motor. Compared with two-pole series electrodes with the same performance, the single-phase four-pole series motor is lower in height, and therefore the overall height of the food processor 100 can be reduced so as to be convenient for users to use. The lower support 272 of the motor 2 is provided with the carbon brush holder 241 corresponding to the carbon brush 24, so that the carbon brush 24 can be reliably fixed, the lower support 272 of the motor 2 is provided with the carbon powder discharging hole 2720 corresponding to the carbon brush 24, carbon powder generated by friction of the carbon brush 24 can be discharged in time, and poor pressure resistance of a product caused by accumulation of the carbon powder is avoided.

Referring to fig. 1 and 2, in the present embodiment, the base 10 and the cooking cup 4 are separated. The cooking cup 4 is detachably placed on the machine base 10. The housing 1 of the base 10 has a receiving space therein for receiving components such as the motor 2, the power circuit board, and the operation control circuit board. 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 upper end of 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 the bottom wall of the cup holder 111 is further provided with a microswitch and a positioning structure. 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 10 is positioned below the cooking cup 4, and the cooking cup 4 and the machine base 10 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 10 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. 3 and 4, the motor 2 includes a rotor winding 23, 4 stator windings 22 uniformly surrounding the rotor winding 23, and a commutator 25 and a carbon brush 24 electrically connecting the rotor winding 23 and the stator windings 22, where the commutator 25 is fixed to the rotor winding 23, and the carbon brush 24 is fixed to the stator windings 22. The motor 2 is a single-phase series motor, and the working principle 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 carbon 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 with a circuit board, a chopper circuit is arranged on the circuit board, and the chopper circuit is used for changing the input voltage of the motor 2 so as to change the output rotating 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. Among the 4 stator windings 22, 2 stator windings 22 adjacently disposed 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.

With continued reference to fig. 3 and 4, the motor 2 includes an upper frame 271 carrying the stator winding 22 and a lower frame 272 fixed below the upper frame 271. The lower bracket 272 and the upper bracket 271 are assembled to be flat, that is, the height of the motor 2 is smaller than the radial dimension of the motor, and the height of the motor 2 is lower. In this embodiment, the upper holder 271 includes a horizontal top portion 2713 and a plurality of upper fixing arms 2712 extending outwardly from the edge of the top portion 2713, and the upper fixing arms 2712 extend obliquely downwardly from the top portion 2713 so that the upper holder 271 has a shape of a substantially shallow plate with an opening turned upside down, but is different from the conventional shallow plate in that the sidewall of the conventional shallow plate is a continuous complete sidewall, and the sidewall of the upper holder 271 in this embodiment is a plurality of upper fixing arms 2712. Similar to the upper bracket 271, the lower bracket 272 includes a horizontal bottom 2721 and a plurality of lower fixing arms 2722 extending outwardly from an edge of the bottom 2721, and the lower fixing arms 2722 extend outwardly from the bottom 2721 in an inclined manner, so that the lower bracket 272 has a shape of a substantially shallow tray with an upward opening, and similarly, unlike the substantially shallow tray, the side wall of the substantially shallow tray is a continuous complete side wall, and the side wall of the lower bracket 272 in this embodiment is a plurality of lower fixing arms 2722. In this embodiment, the number of the lower fixing arms 2722 is 4, and the lower fixing arms 2722 are uniformly distributed on the edge of the bottom 2721, and the number of the stator windings 22 is 4, and the stator windings are correspondingly located between two adjacent lower fixing arms 2722. The stator windings 22 are located between two adjacent lower fixing arms 2722, so that a heat dissipation space is formed between the adjacent stator windings 22, heat dissipation of the motor is facilitated, and temperature rise of the motor can be reduced. The upper fixing arm 2712 of the upper bracket 271 and the lower fixing arm 2722 of the lower bracket 272 are fixed by screws, and the stator winding 22 and the rotor winding 23 of the motor 2, and the commutator 25 and the carbon brush 24 are located between the top 2713 of the upper bracket 271 and the bottom 2712 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 carbon 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 housing 1.

The carbon brush 24 is fixed between the upper and lower frames 271, 272 by the carbon brush holder 241. The carbon brush holder 241 is fixed to the bottom 2721 of the lower bracket 272 by means of clamping or screwing, and the lower bracket 272 is further provided with a limiting portion (not numbered) for limiting the movement of the carbon brush holder 241. In some embodiments, the limiting parts are, for example, baffles disposed at the left and right sides of the carbon brush holder to prevent the carbon brush holder 241 from moving in the left-right direction; for example, the limiting portion is a protrusion, which is engaged with a corresponding groove on the carbon brush holder 241, and can also limit the movement of the carbon brush holder 241. The carbon brush holder 241 is fixed to the lower bracket 272 and is restricted in movement by the stopper, so that the carbon brush 24 is more reliably fixed. In this embodiment, the carbon brush holder 241 is disposed on the bottom 2721 of the lower fixed arm 2722 of the lower support 272, that is, the carbon brush holder 241 is disposed on the inner side of the lower support 272, and compared with a conventional fixing manner in which holes are formed in the support, the support in this embodiment does not need to be provided with fixing holes, and the height of the support can be reduced, so that the carbon brush holder is suitable for a flat motor with a low height. The bottom 2722 of the lower bracket 272 is provided with the carbon powder discharging hole 2720. The width of the carbon powder discharging hole 2720 is not less than that of the carbon brush 24, and the length of the carbon powder discharging hole 2720 is not less than 3 mm. By the arrangement, carbon powder generated by friction of the carbon brush 24 can be discharged from the carbon powder discharging hole 2720 to a great extent, and carbon powder accumulation is avoided.

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 2712 of the upper bracket 271, a supporting pillar is disposed on the housing 1, and the motor 2 is mounted in the housing 1 through 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 28 generates a negative pressure at the bottom of the motor 2 to drive the airflow to flow from top to bottom. The fan blade 28 rotates to drive airflow to flow, so that heat dissipation can be performed on the motor 2, and temperature rise of the motor 2 is reduced. As shown by the arrow in FIG. 4, the airflow flows from top to bottom, which can drive the carbon powder to be discharged downwards, thus avoiding the carbon powder from flying upwards to affect the performance of the motor.

As can be seen from the above description of the specific embodiment, the motor 2 of the food processor 100 provided in the present application is a single-phase four-pole series motor. Compared with two-pole series electrodes with the same performance, the single-phase four-pole series motor is lower in height, and therefore the overall height of the food processor 100 can be reduced so as to be convenient for users to use. The lower support 272 of the motor 2 is provided with the carbon brush holder 241 corresponding to the carbon brush 24, so that the carbon brush 24 can be reliably fixed, the lower support 272 of the motor 2 is provided with the carbon powder discharging hole 2720 corresponding to the carbon brush 24, carbon powder generated by friction of the carbon brush 24 can be discharged in time, and poor pressure resistance of a product caused by accumulation of the carbon powder is avoided.

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. A food processor, which comprises a machine base (10) and a food processing cup (4) arranged on the machine base (10), a stirring knife (41) is arranged in the cooking cup (4), the machine base (10) comprises a motor (2) used for driving the stirring knife (41) to move, it is characterized in that the motor (2) is a single-phase four-pole series motor (2), the motor (2) comprises a rotor winding (23), a stator winding (22) arranged around the rotor winding (23), a commutator (25) and a carbon brush (24) for electrically connecting the rotor winding (23) and the stator winding (22), and a lower bracket (272) positioned below the stator winding (22), the lower support (272) is provided with a carbon brush holder (241) used for fixing the carbon brush (24) and a carbon powder discharging hole (2720) located below the carbon brush (24) corresponding to the carbon brush (24).

2. The food processor as claimed in claim 1, wherein the carbon brush holder (241) is fixed on the lower bracket (272) by clamping or screwing, and the lower bracket (272) is further provided with a limiting part for limiting the movement of the carbon brush holder (241).

3. The food processor of claim 1, wherein the lower bracket (272) comprises a bottom portion (2721) and a plurality of lower fixing arms (2722) extending outwardly from edges of the bottom portion (2721), and the carbon brush holder (241) is fixed to the bottom portion (2721) of the lower bracket (272).

4. The food processor of claim 3, wherein the motor (2) comprises an upper bracket (271) carrying the stator windings, the lower fixed arm (2722) extending outwardly from a bottom (2721) of the lower bracket (272) and toward the upper bracket (271), an end of the lower fixed arm (2722) distal from the bottom (2721) being fixed to the upper bracket (271).

5. The food processor of claim 4, wherein the number of the lower fixing arms (2722) is 4 and the lower fixing arms are evenly distributed on the edge of the bottom (2721), and the number of the stator windings (22) is 4 and the stator windings are correspondingly located between two adjacent lower fixing arms (2722).

6. The food processor of claim 5, wherein the lower bracket (272) and the upper bracket (271) are flat as a whole after being assembled.

7. The food processor as claimed in claim 1, wherein the width of the carbon powder discharge hole (2720) is not less than the width of the carbon brush (24), and the length of the carbon powder discharge hole (2720) is not less than 3 mm.

8. The food processor of claim 1, wherein the fan blades (28) are arranged below the lower support (272), and the fan blades (28) rotate to drive airflow to flow from top to bottom.

9. The food processor of claim 1, wherein the base (10) comprises a circuit board electrically connected to the motor (2), and a chopper circuit is disposed on the circuit board and is configured to change an input voltage of the motor (2) to change an output rotation speed of the motor (2).

10. The food processor of claim 4, wherein the motor (2) is mounted and fixed in the housing (1) of the machine base (10) through the upper bracket (271) and/or the lower bracket (272).

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