CN209748363U

CN209748363U - food processor

Info

Publication number: CN209748363U
Application number: CN201920372115.1U
Authority: CN
Inventors: 顾王骞
Original assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Current assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Priority date: 2019-03-22
Filing date: 2019-03-22
Publication date: 2019-12-06
Anticipated expiration: 2029-03-22

Abstract

The application provides a cooking machine. This cooking machine includes: the motor comprises a plurality of wiring ends and an on-off switch; and the motor wiring control circuit comprises a normal operation control mode for controlling the normal operation of the motor and a brake control mode for controlling the brake of the motor, and comprises a change-over switch connected with the wiring terminals, the change-over switch is connected with the on-off switch, and the on-off switch controls the on-off of the change-over switch, so that the change-over switch changes the connection mode of the wiring terminals of the motor, and the motor wiring control circuit is switched between the normal operation control mode and the brake control mode. The brake control mode can apply resistance to the rotor of the motor, so that the motor can be stopped quickly, and the use safety of a user is improved.

Description

Food processor

Technical Field

the application relates to the technical field of household appliances, in particular to a food processor.

Background

When current cooking machine shut down, because inertia effect, motor speed descends slowly, and is consuming time longer, especially to broken wall machine, its rotational speed is higher, when needs stop, and is consuming time longer, if when the user opened the bowl cover, the broken wall sword still was in the rotation state, and this can cause the potential safety hazard.

SUMMERY OF THE UTILITY MODEL

In view of this, the present application provides a food processor, which can shorten the time of motor stall and improve the safety of the user during use.

Specifically, the method is realized through the following technical scheme:

A food processor, comprising:

A motor including a plurality of terminals;

an on-off switch; and

The motor wiring control circuit is provided with a normal operation control mode for controlling the normal operation of the motor and a brake control mode for controlling the brake of the motor, and comprises a change-over switch connected with the wiring ends, the change-over switch is connected with the on-off switch, and the on-off switch controls the on-off of the change-over switch, so that the change-over switch changes the connection mode of the wiring ends of the motor, and the motor wiring control circuit is switched between the normal operation control mode and the brake control mode. The motor wiring control circuit can realize the switching between a normal operation control mode and a brake control mode according to the connection or disconnection of the on-off switch, wherein the brake control mode can apply resistance to the motor, the quick stop of the motor is realized, and the use safety of a user is improved.

Optionally, the motor wiring control circuit further includes a triode, a base of the triode is electrically connected with the on-off switch, a collector is electrically connected with the transfer switch, and an emitter is grounded. The triode can be connected with and disconnected with an electric connection loop where the change-over switch is positioned, and can control the large variation of the collector current by the small variation of the base current.

optionally, the motor wiring control circuit further comprises a photoelectric coupler, an input end of the photoelectric coupler is electrically connected with the on-off switch, and an output end of the photoelectric coupler is electrically connected with a base electrode of the triode. The input and output of the photoelectric coupler are isolated from each other, and the electric signal transmission has unidirectionality and has good electric insulation capacity and anti-interference capacity.

The input end of the photoelectric coupler U4 is connected with a first resistor R1 in series, and the output end of the photoelectric coupler U4 is connected with a second resistor R2 in series.

Optionally, the transfer switch comprises a relay. The relay can control a circuit with high power by a very tiny control quantity, and meanwhile, the relay also has the function of coupling isolation.

Optionally, the motor includes a rotor and a first stator coil, a terminal of the rotor and a terminal of the first stator coil are electrically connected to the change-over switch, and the change-over switch changes a connection manner between the terminal of the rotor and the terminal of the first stator coil.

Optionally, the first stator coil includes a first terminal and a third terminal, the first terminal is connected to a live wire, the rotor includes a fourth terminal and a fifth terminal,

The change-over switch comprises a first disconnecting link and a second disconnecting link which are arranged in a linkage manner, a movable contact of the first disconnecting link is connected with a fourth terminal, one static contact of the first disconnecting link is connected with the first terminal, the other static contact of the first disconnecting link is connected with the third terminal,

The movable contact of the second knife switch is connected with the fifth terminal, one fixed contact of the second knife switch is connected with the third terminal, and the other fixed contact is suspended.

Optionally, the motor further comprises a second stator coil, the second stator coil comprises two terminals, one terminal is connected with the fifth terminal, the other terminal is a second terminal and is connected with a zero line,

In a normal operation control mode, the first knife switch acts to enable the third terminal to be connected with the fourth terminal, and the second knife switch acts to enable the fifth terminal to be connected with a zero line through the second terminal; in a braking control mode, the first knife-switch action connects the first terminal with the fourth terminal, and the second knife-switch action connects the third terminal with the fifth terminal.

optionally, the cooking machine includes cup and bowl cover, on-off switch set up in the cup, the bowl cover is equipped with and triggers on-off switch's trigger spare. The power-off of the on-off switch can be triggered by opening the cup cover, the brake control mode is started, the implementation process is convenient, the probability of dangerous accidents after a user opens the cup cover is reduced, and the safety of the food processor is improved.

Optionally, on-off switch set up in the host computer of cooking machine, be provided with safe connecting rod in the cup, the bowl cover lid supports when closing and pushes away safe connecting rod makes safe connecting rod triggers on-off switch.

Drawings

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

FIG. 2 is a schematic diagram of a motor wiring control circuit and terminal electrical connections shown in an exemplary embodiment of the present application;

FIG. 3 is a schematic view of a motor shown in an exemplary embodiment of the present application;

FIG. 4 is a schematic diagram illustrating multiple terminal leads within a motor according to an exemplary embodiment of the present application;

FIG. 5 is a schematic diagram illustrating a plurality of terminal connections during normal operation of a motor according to an exemplary embodiment of the present application;

FIG. 6 is a schematic diagram illustrating a plurality of terminal connections during braking according to an exemplary embodiment of the present application.

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 embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of this application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "a number" means two or more. Unless otherwise specified, "front", "back", "lower" and/or "upper", "top", "bottom", and the like are for ease of description only and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

referring to fig. 1, fig. 1 shows a schematic diagram of a food processor according to an exemplary embodiment of the present application. The food processor 10 of the embodiment of the present application includes a main machine 11 and a cup assembly 12, wherein the cup assembly 12 is detachably assembled to the main machine 11, and the two can be separated from each other when necessary.

The cup assembly 12 comprises a cup body and a cup cover covering the cup body, and the cup body comprises an accommodating cavity for accommodating food materials. The cup assembly 12 further includes a rotary knife assembly (not shown in fig. 1) rotatably disposed within the receiving cavity of the cup body. The rotary cutter assembly is driven to rotate by a motor in the main machine 11, and stirs or crushes the food material. The rotating knife assembly can be set as a stirring knife assembly, a wall breaking knife assembly or a juicing wheel assembly and the like, and the food processor 10 can be a stirrer, a wall breaking machine or a juicing machine and the like.

The main body 11 includes a motor 110 (refer to fig. 3) and a motor wiring control circuit 112 (refer to fig. 2), and both the motor 110 and the motor wiring control circuit 112 are disposed in the main body housing. The motor connection control circuit 112 has a normal operation control mode for controlling the normal operation of the motor 110 and a brake control mode for controlling the braking of the motor 110.

referring to fig. 2, fig. 2 is a circuit diagram illustrating an electrical connection between a motor connection control circuit and a motor terminal according to an exemplary embodiment of the present application. The motor connection control circuit 112 includes a switch 1120, and the switch 1120 is electrically connected to the terminals of the motor 110.

The food processor 10 further includes an on-off switch 13, the on-off switch 13 is electrically connected to the switch 1120, and the on-off state of the switch 1120 is controlled, so that the switch 1120 changes the connection mode of the plurality of terminals of the motor 110, that is, the induced current of the stator coil in the motor 110 is changed, the magnetic field force generated by the induced current is opposite to the rotation direction of the rotor in the motor, and further the motor wiring control circuit 112 is switched between the normal operation control mode and the brake control mode.

As can be seen from the above description, the motor connection control circuit 112 can switch between the normal operation control mode and the braking control mode according to the on/off of the on/off switch 13, wherein the braking control mode can apply a resistance to the motor rotor to achieve the fast stopping of the motor 110, thereby improving the safety of the user.

In the embodiment shown in fig. 2, the motor connection control circuit 112 may further include a transistor Q1, a base of the transistor Q1 is electrically connected to the on-off switch 13, a collector of the transistor Q1 is electrically connected to the switch 1120, and an emitter of the transistor Q is grounded to GND. Transistor Q1 controls the large variation of collector current with small variations of base current, and mainly acts to turn on and off the electrical connection loop of switch 1120.

The changeover switch 1120 has one end connected to the dc power supply and the other end connected via the collector of the transistor Q1. When the transistor Q1 is turned on, the switch 1120 is powered on, otherwise, the switch 1120 is powered off.

specifically, the on-off switch 13 includes a first terminal KEYOFF and a second terminal AGND, wherein the second terminal AGND is grounded. When the first terminal KEYOFF and the second terminal AGND are turned on, the transistor Q1 is turned on, the electrical connection loop where the switch 1120 is located is turned on, and the switch 1120 operates after being powered on, thereby changing the connection mode of each terminal. On the contrary, when the first terminal KEYOFF and the second terminal AGND are disconnected, the transistor Q1 is turned off, the electrical connection loop where the switch 1120 is located is disconnected, the switch 1120 is reset after power failure, and each terminal is reset to the original connection mode, thereby realizing switching between the normal operation control mode and the brake control mode.

The motor connection control circuit 112 may further include a photo coupler U4, an input terminal of the photo coupler U4 is electrically connected to the first terminal KEYOFF, and an output terminal is electrically connected to the base of the transistor Q1. The input and the output of the photoelectric coupler U4 are isolated from each other, and the electric signal transmission has unidirectionality and has good electric insulation capacity and anti-interference capacity.

The photocoupler U4 includes a light emitting diode and a phototriode packaged in the same casing, the positive electrode of the light emitting diode is electrically connected with the DC power supply, and the negative electrode is electrically connected with the first terminal KEYOFF. The collector of the phototriode is electrically connected with a direct current power supply, and the emitter of the phototriode is electrically connected with the base of the triode Q1. In one embodiment, a 12V DC power supply may be used. The input terminal of the photocoupler U4 may be connected in series with the first resistor R1, and the output terminal may be connected in series with the second resistor R2.

The switch 1120 may include a first switch S1 and a second switch S2 which are linked to each other, and the connection mode of the terminals of the motor 110 may be changed by the first switch S1 and the second switch S2.

in an alternative embodiment, the first switch S1 may include a moving contact and two fixed contacts, the second switch S2 may include a moving contact and two fixed contacts, and the moving contact of the first switch S1 and the moving contact of the second switch S2 may be connected to two terminals of the motor 110, respectively, so as to change the connection manner of the two terminals. The number of the stationary contacts of the first knife switch S1 and the second knife switch S2 can be matched according to the number of the terminals, and is not limited to two.

The transfer switch 1120 may employ a relay, such as a transfer type (Z-type) relay. The relay can control a circuit with high power by a very tiny control quantity, and meanwhile, the relay also has the function of coupling isolation. The relay may be configured as an electromagnetic relay that operates by the action of an attractive force generated between the electromagnetic core and the armature by a current in the input circuit.

Referring to fig. 3, fig. 3 illustrates a schematic view of a motor according to an exemplary embodiment of the present application. The motor 110 includes a plurality of terminals, in this embodiment, the motor 110 includes five terminals L1-L5, and five terminals L1-L5 are led out from the interior of the motor 110 for connecting with the motor connection control circuit 112.

referring to fig. 4, fig. 4 is a schematic diagram illustrating a plurality of terminals leading out from the interior of a motor according to an exemplary embodiment of the present application. In one embodiment, the electric machine 110 includes a rotor 1100, a first stator coil 1102, and a second stator coil 1104. A plurality of terminals L1-L5 are led out from the three.

The first stator coil 1102 includes two terminals, a first terminal L1 and a third terminal L3. The rotor 1100 includes a fourth terminal L4 and a fifth terminal L5. The second stator coil 1104 includes two terminals, one of which is connected to the fifth terminal L5 of the rotor 1100 and the other of which is connected to the live line, and for convenience of description, the terminal connected to the live line is referred to as a second terminal L2.

Referring to fig. 5, fig. 5 is a schematic diagram illustrating a plurality of terminal connections during normal operation of a motor according to an exemplary embodiment of the present application. The first terminal L1 is connected to neutral N, the first switch S1 is actuated to connect the third terminal L3 to the fourth terminal L4, and the second switch S2 is actuated to connect the fifth terminal L5 to the hot L via the second terminal L2 of the second stator coil 1104. At this time, the live line L of the ac power supply is connected to the neutral line N, and the motor operates normally, and at this time, the motor connection control circuit 112 is in the normal operation control mode.

The number of stator coils is not limited in the present application, and in other embodiments, the embodiment may only include the first stator coil 1102, at this time, the terminal of the rotor 1100 and the terminal of the first stator coil 1102 are electrically connected to the change-over switch 1120, and the change-over switch 1120 changes the connection manner between the terminal of the rotor 1100 and the terminal of the first stator coil 1102, so as to change the induced current in the first stator coil 1102 in the motor 110, and the magnetic field force generated by the induced current is opposite to the rotation direction of the rotor 1100, so that the motor connection control circuit 112 switches between the normal operation control mode and the brake control mode.

Referring to fig. 6, fig. 6 is a schematic view illustrating connection of a plurality of terminals when a motor according to an exemplary embodiment of the present application is braked. The first blade S1 is actuated to connect the first terminal L1 to the fourth terminal L4, the second blade S2 is actuated to connect the third terminal L3 to the fifth terminal L5, the live line L of the ac power source is disconnected from the neutral line N, and the second terminal L2 is floating. At this time, the motor wiring control circuit 112 is in the brake control mode.

Therefore, in the braking control mode, the first stator coil 1102 and the rotor 1100 are connected to form a closed loop, the rotor 1100 still rotates in the original direction due to inertia, at this time, an induced electromotive force still exists in the first stator coil 1102, but due to the change of the connection mode of the plurality of terminals, an induced current in the first stator coil 1102 changes, a magnetic field force generated by the induced current is opposite to the rotation direction of the rotor 1100, the rotation of the rotor 1100 is hindered, and the braking effect is achieved.

With continued reference to fig. 2, the terminals of the motor 110 are electrically connected to the switch 1120, and the connection modes of the terminals L1-L5 are changed by the operation of the switch 1120. How the changeover switch 1120 changes the connection manner of the terminals will be described in detail below.

The moving contact of the first switch S1 is connected to the fourth terminal L4, one of the stationary contacts of the first switch S1 is connected to the third terminal L3, and the other stationary contact is connected to the first terminal L1. The movable contact of the second knife switch S2 is connected with the fifth terminal L5, one of the fixed contacts of the second knife switch S2 is connected with the third terminal L3, and the other fixed contact is suspended.

when the on-off switch 13 is in a power-on state, the triode Q1 is turned on, the transfer switch 1120 is powered on, the first knife switch S1 and the second knife switch S2 operate, at this time, the first terminal L1 is connected with the zero line N of the alternating current power supply, the fourth terminal L4 is electrically connected with the third terminal L3, the fifth terminal L5 is connected with the live line through the second terminal L2 of the second stator coil 1104, at this time, a closed loop connecting the rotor 1100, the first stator coil 1102 and the second stator coil 1104 is formed, and the motor wiring control circuit 112 is in a normal operation control mode.

on the contrary, when the on-off switch 13 is in a power-off state, the triode Q1 is turned off, the transfer switch 1120 is powered off, the first knife switch S1 and the second knife switch S2 are reset, the first terminal L1 is disconnected from the zero line N of the alternating current power supply and connected with the fourth terminal L4, the fifth terminal L5 is connected with the third terminal L3, the second terminal L2 is suspended, only the rotor 1100 and the first stator coil 1102 form a loop, and the motor wiring control circuit 112 is in a brake control mode.

as is known in the foregoing, the on-off switch 13 can control the on-off of the switch 1120, and the on-off switch 13 can be powered on when the cup cover is closed and powered off when the cup cover is opened. That is, the motor wiring control circuit 112 is in the normal operation control mode when the cup cover is closed, and is in the brake control mode when the cup cover is opened.

In one embodiment, the on-off switch 13 may be disposed on the cup body, and the cup cover is provided with a trigger for triggering the on-off switch 13. For example, when the lid is closed, the lid covers the cup, and at this time, the trigger applies a force to the first terminal KEYOFF, so that the first terminal KEYOFF contacts the second terminal AGND, and the on-off switch 13 is turned on. When the cup cover is opened, the acting force of the trigger on the first terminal KEYOFF is released, the first terminal KEYOFF can be separated from the second terminal AGND under the action of the spring force, and the on-off switch 13 is powered off.

In another embodiment, the on-off switch 13 may also be disposed on the host 11, and at this time, a safety link may be disposed in the cup, and when the cup lid is covered on the cup, the cup lid pushes the safety link, and the safety link triggers the first terminal KEYOFF of the on-off switch 13 to be connected to the second terminal AGND.

above two kinds of embodiments can all start the brake control mode when the bowl cover is opened, have reduced the probability that the user takes place the dangerous accident after opening the bowl cover, have improved the security of cooking machine 10.

the above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A food processor, comprising:

A motor (110) including a plurality of terminals;

An on-off switch (13); and

the motor wiring control circuit (112) is provided with a normal operation control mode for controlling the normal operation of the motor (110) and a brake control mode for controlling the brake of the motor, the motor wiring control circuit (112) comprises a change-over switch (1120) connected with the wiring ends, the change-over switch (1120) is connected with the on-off switch (13), and the on-off switch (13) controls the on-off of the change-over switch (1120), so that the change-over switch (1120) changes the connection mode of the plurality of wiring ends of the motor (110), and the motor wiring control circuit (112) is switched between the normal operation control mode and the brake control mode.

2. The food processor of claim 1, wherein the motor connection control circuit (112) further comprises a transistor (Q1), wherein the transistor (Q1) has a base electrically connected to the on/off switch (13), a collector electrically connected to the switch (1120), and an emitter grounded.

3. The food processor of claim 2, wherein the motor wiring control circuit (112) further comprises an opto-coupler (U4), an input terminal of the opto-coupler (U4) is electrically connected to the on/off switch, and an output terminal of the opto-coupler (U4) is electrically connected to a base of the transistor (Q1).

4. The food processor of claim 3, wherein the photoelectric coupler (U4) has an input end connected in series with a first resistor (R1) and an output end connected in series with a second resistor (R2).

5. The food processor of claim 1, wherein the switch (1120) comprises a relay.

6. The food processor of claim 1, wherein the motor comprises a rotor (1100) and a first stator coil (1102), a terminal of the rotor (1100) and a terminal of the first stator coil (1102) are electrically connected to the change-over switch (1120), and the change-over switch (1120) changes a connection mode of the terminal of the rotor (1100) and the terminal of the first stator coil (1102).

7. The food processor of claim 6, wherein the first stator coil (1102) comprises a first terminal (L1) and a third terminal (L3), the first terminal (L1) being connected to a live wire, the rotor (1100) comprising a fourth terminal (L4) and a fifth terminal (L5),

The change-over switch (1120) comprises a first disconnecting link (S1) and a second disconnecting link (S2) which are arranged in a linkage manner, a movable contact of the first disconnecting link (S1) is connected with a fourth terminal (L4), one static contact of the first disconnecting link (S1) is connected with a first terminal (L1), the other static contact is connected with a third terminal (L3),

The movable contact of the second knife switch (S2) is connected with the fifth terminal (L5), one static contact of the second knife switch (S2) is connected with the third terminal (L3), and the other static contact is suspended.

8. The food processor of claim 7, wherein the motor (110) further comprises a second stator coil (1104), the second stator coil (1104) comprising two terminals, one terminal being connected to the fifth terminal (L5) and the other terminal being a second terminal (L2) connected to a neutral wire,

In a normal operation control mode, said first switch (S1) is actuated so as to connect said third terminal (L3) with said fourth terminal (L4), said second switch (S2) is actuated so as to connect said fifth terminal (L5) with neutral through said second terminal (L2); in a braking control mode, the first switch (S1) is actuated to connect the first terminal (L1) to the fourth terminal (L4), and the second switch (S2) is actuated to connect the third terminal (L3) to the fifth terminal (L5).

9. The food processor according to claim 1, wherein the food processor (10) comprises a cup body and a cup cover, the on-off switch (13) is arranged on the cup body, and the cup cover is provided with a trigger piece for triggering the on-off switch (13).

10. The food processor of claim 9, wherein the on-off switch (13) is arranged on a main machine (11) of the food processor, a safety connecting rod is arranged in the cup body, and the cup cover is pressed against the safety connecting rod when closed, so that the safety connecting rod triggers the on-off switch (13).