CN209733686U - food processer circuit and food processer - Google Patents

Abstract

the application provides a cooking machine circuit and cooking machine. The cooking machine circuit is used for the cooking machine, and the cooking machine includes cup body component and bowl cover subassembly. The food processer circuit comprises a load driving circuit, a power supply switch circuit, a safety switch assembly and a controller, wherein the power supply switch circuit is electrically connected with a power supply and the load driving circuit and controls the on-off of a power supply line from the power supply to the load driving circuit. The power supply switch circuit comprises an electric control switch electrically connected with a power supply and a load driving circuit and an isolation driving circuit electrically connected with the electric control switch. The safety switch assembly is arranged on the cup body assembly and is electrically connected with the power supply switch circuit. The controller is electrically connected with the isolation control circuit. When the cup cover assembly covers the cup body assembly, the safety switch assembly is conducted, and the controller controls the on-off of the electric control switch through controlling the isolation driving circuit. When the cup cover assembly is opened, the safety switch assembly is disconnected, so that the electric control switch is turned off.

Description

Food processer circuit and food processer

Technical Field

the application relates to the field of small household appliances, in particular to a food processor circuit and a food processor.

Background

With the increasing living standard of people, many different types of food processors appear on the market. The functions of the food processor mainly include, but are not limited to, functions of making soybean milk, squeezing fruit juice, making rice paste, mincing meat, shaving ice, making coffee and/or blending facial masks and the like.

Some cooking machines have the protect function that uncaps, and host computer stop drive work when the bowl cover subassembly is opened avoids the host computer drive blade to rotate under the state that the bowl cover subassembly was opened and accidentally injures user's potential safety hazard. Some cooking machines realize uncapping the protection through mechanical connecting rod switch structure now, set up the connecting rod in the cup subassembly, set up micro-gap switch on the host computer. When the cup cover assembly is covered, the cup cover assembly pushes the connecting rod downwards, the micro switch is triggered to be closed through the connecting rod, and the host can start driving work. When the cup cover assembly is opened, the connecting rod moves upwards, the micro switch is switched off, and the host stops driving work, so that the cover opening protection is realized. However, due to problems of travel errors of the micro-switches, length errors of connecting rods, assembly errors and/or size errors of cups and the like, the micro-switches are different in travel, a host is easily powered off or not powered off, cover opening protection cannot be effectively achieved, and serious potential safety hazards are brought to product use.

SUMMERY OF THE UTILITY MODEL

The application provides a high cooking machine circuit and cooking machine of security.

An aspect of this application provides a cooking machine circuit for cooking machine, cooking machine includes cup body component and bowl cover subassembly, cooking machine circuit includes: a load driving circuit; the power supply switch circuit is electrically connected with a power supply and the load driving circuit and controls the on-off of a power supply line from the power supply to the load driving circuit, and the power supply switch circuit comprises an electric control switch and an isolation driving circuit, wherein the electric control switch is electrically connected with the power supply and the load driving circuit, and the isolation driving circuit is electrically connected with the electric control switch; the safety switch assembly is arranged on the cup body assembly and is electrically connected with the power supply switch circuit; the controller is electrically connected with the isolation control circuit; when the cup cover assembly covers the cup body assembly, the safety switch assembly is conducted, and the controller controls the on-off of the electric control switch by controlling the isolation driving circuit; when the cup cover assembly is opened, the safety switch assembly is disconnected, so that the electric control switch is turned off.

Further, the safety switch assembly comprises a first contact and a second contact which is arranged separately from the first contact, the first contact is electrically connected with the power supply switch circuit, and the second contact is grounded or connected with a direct current power supply end.

Furthermore, the isolation driving circuit comprises a triode electrically connected with the electric control switch and a photoelectric coupler electrically connected with the triode and the controller, the triode is electrically connected with the first contact, and the controller controls the on-off of the photoelectric coupler to control the on-off of the triode when the cover of the cup cover assembly is closed so as to control the on-off of the electric control switch.

furthermore, the base electrode of the triode is connected with the photoelectric coupler, the collector electrode of the triode is connected with the electric control switch, the emitter electrode of the triode is connected with the first contact, and the second contact is grounded.

further, the cooking machine circuit is including the electricity connection the power supply circuit of power, the conversion the alternating current of power output, power supply circuit is including keeping apart power supply circuit and non-isolation power supply circuit, keep apart power supply circuit with the electric control switch electricity is connected, gives the electric control switch power supply, non-isolation power supply circuit electricity connect in the controller with load drive circuit gives the controller with the load drive circuit power supply.

Further, the controller is electrically connected with the load driving circuit in a non-isolated mode and controls the load driving circuit to drive the load.

Further, the food processor circuit comprises a switch electrically connected between the load driving circuit and at least two loads, and the controller is electrically connected with the switch to control the switch so that the load driving circuit is switched between at least two loads.

Further, the load driving circuit comprises a first driving circuit electrically connected with a first load and a second driving circuit electrically connected with a second load, and the food processor circuit comprises a double-pole double-throw switch which is electrically connected between the first driving circuit and the first load, is electrically connected between the second driving circuit and the second load, and simultaneously switches on or off the lines from the first driving circuit and the second driving circuit to the corresponding loads.

Further, the load driving circuit includes a first driving circuit electrically connected to a first load and a second driving circuit electrically connected to a second load, the food processor circuit includes a single-pole single-throw switch electrically connected to the first driving circuit and the second driving circuit, the first driving circuit and the second driving circuit are electrically connected to a first power supply line of the power supply, and are electrically connected to a second power supply line of the power supply through the single-pole single-throw switch.

further, the single-pole single-throw switch is electrically connected between the electrically controlled switch and a common terminal to which the first load and the second load are connected.

Another aspect of the present application provides a food processor, comprising: a host; the cup body component can be assembled on the main machine; the cup cover assembly can cover the cup body assembly; and a food processor circuit.

the safety switch subassembly of this application cooking machine circuit is connected with the power supply switch circuit electricity, can control power supply switch circuit's hardware circuit's break-make, can make power supply switch circuit turn-off when the bowl cover subassembly is opened, cuts off power supply to load drive circuit's power supply line, makes load drive circuit outage, and the protection of uncapping is realized to the stop drive work. For the mode that utilizes mechanical control cooking drive circuit such as safe connecting rod and micro-gap switch to switch on or off in order to realize the protection of uncapping, this application embodiment can avoid not cutting off the power supply or not the problem of circular telegram because of load drive circuit that micro-gap switch stroke, assembly error and/or dimensional error etc. caused, it is safer, and save the cost. And when the cup cover assembly is opened, the power supply switch circuit is switched off on hardware, so that dangerous actions caused by disordered programs can be effectively avoided, and the cover opening protection of the food processor can be effectively realized. In addition, the safety switch assembly comprises an electric control switch and an isolation driving circuit, the controller controls the on-off of the electric control switch by controlling the isolation driving circuit, when the cup cover assembly is covered, the on-off of the electric control switch is further controlled by software, the safety is higher due to the combination of hardware and software, the isolation driving circuit can isolate the controller from the electric control switch, and the mutual interference of the power supply of the electric control switch and the power supply of a controller port is avoided.

Drawings

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

Fig. 2 is a longitudinal sectional view of the food processor shown in fig. 1;

Fig. 3 is a perspective view of the food processor shown in fig. 1;

Fig. 4 is an exploded perspective view of the main body of the food processor shown in fig. 1;

FIG. 5 is an exploded perspective view of the cup assembly and lid assembly of the food processor of FIG. 1;

Fig. 6 is a schematic circuit diagram of an embodiment of the food processor circuit of the present application;

Fig. 7 is a circuit diagram of an embodiment of a power supply switching circuit of the food processor circuit shown in fig. 6;

Fig. 8 is a circuit diagram illustrating an embodiment of a load driving circuit and a load switching circuit of the food processor circuit shown in fig. 6;

Fig. 9 is a circuit diagram of one embodiment of the food processor circuit shown in fig. 6;

Fig. 10 is a schematic diagram of another embodiment of the food processor circuit of the present application;

Fig. 11 is a circuit diagram showing an embodiment of a load driving circuit and a load switching circuit of the food processor circuit shown in fig. 10;

Fig. 12 is a schematic circuit diagram of another embodiment of the food processor circuit of the present application;

fig. 13 is a circuit diagram illustrating an embodiment of a power switch circuit and a load switch circuit of the food processor circuit shown in fig. 12;

Fig. 14 is a circuit diagram showing an embodiment of load driving of the food processor circuit shown in fig. 12.

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 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 in the claims does not indicate any order, quantity, or importance, but rather is 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. 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. As used in this specification 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.

The cooking machine circuit of this application embodiment is used for cooking machine, and cooking machine includes cup body component and bowl cover subassembly. The food processer circuit comprises a load driving circuit, a power supply switch circuit, a safety switch assembly and a controller, wherein the power supply switch circuit is electrically connected with a power supply and the load driving circuit and controls the on-off of a power supply line from the power supply to the load driving circuit. The power supply switch circuit comprises an electric control switch electrically connected with a power supply and a load driving circuit and an isolation driving circuit electrically connected with the electric control switch. The safety switch assembly is arranged on the cup body assembly and is electrically connected with the power supply switch circuit. The controller is electrically connected with the isolation control circuit. When the cup cover assembly covers the cup body assembly, the safety switch assembly is conducted, and the controller controls the on-off of the electric control switch through controlling the isolation driving circuit. When the cup cover assembly is opened, the safety switch assembly is disconnected, so that the electric control switch is turned off.

The safety switch subassembly of this application cooking machine circuit is connected with the power supply switch circuit electricity, can control power supply switch circuit's hardware circuit's break-make, can make power supply switch circuit turn-off when the bowl cover subassembly is opened, cuts off power supply to load drive circuit's power supply line, makes load drive circuit outage, and the protection of uncapping is realized to the stop drive work. For the mode that utilizes mechanical control cooking drive circuit such as safe connecting rod and micro-gap switch to switch on or off in order to realize the protection of uncapping, this application embodiment can avoid not cutting off the power supply or not the problem of circular telegram because of load drive circuit that micro-gap switch stroke, assembly error and/or dimensional error etc. caused, it is safer, and save the cost. And when the cup cover assembly is opened, the power supply switch circuit is switched off on hardware, so that dangerous actions caused by disordered programs can be effectively avoided, and the cover opening protection of the food processor can be effectively realized. In addition, the safety switch assembly comprises an electric control switch and an isolation driving circuit, the controller controls the on-off of the electric control switch by controlling the isolation driving circuit, when the cup cover assembly is covered, the on-off of the electric control switch is further controlled by software, the safety is higher due to the combination of hardware and software, the isolation driving circuit can isolate the controller from the electric control switch, and the mutual interference of the power supply of the electric control switch and the power supply of a controller port is avoided.

Fig. 1 is a schematic diagram of an embodiment of a food processor 10. Fig. 2 shows a longitudinal cross-sectional view of one embodiment of the food processor 10 shown in fig. 1. Fig. 3 is a perspective view of the food processor 10. Food processor 10 includes cup body assembly 12 and lid assembly 13.

The food processor 10 further comprises a host 11. In one embodiment, the host 11 is in the form of a stand. The host 11 can provide power, control and drive the food processor 10 to work, and can interact with the user. The host 11 may include a motor 21. The top of the host 11 is provided with a host coupler 27.

The cup assembly 12 may be assembled to the main body 11. In one embodiment, the cup assembly 12 is removably assembled to the host 11. The cup body assembly 12 can contain food materials, and the food materials can be stirred, heated and/or vacuumized in the cup body assembly 12. The stirring blade assembly 14 can be assembled in the cup body assembly 12, the stirring blade assembly 14 is connected with a rotating shaft of the motor 21, and the motor 21 can drive the stirring blade assembly 14 to rotate so as to stir the food material. The cup assembly 12 includes a cup 24 and a cup handle 25 secured to one side of the cup 24. In one embodiment, the cup body assembly 12 includes a heating assembly 22 assembled to the bottom of the cup body 24, such as a heating plate provided with a heating tube or an electromagnetic heating plate, which can heat the food material. The blender knife assembly 14 may be assembled to the heating assembly 22. A temperature sensor 23, such as an NTC, may be assembled to the heating element 22. In another embodiment, a cup chassis without heating function is fixedly assembled at the bottom of the cup body 24.

Lid assembly 13 may be attached to cup assembly 12. When the food processor 10 works, the cup cover assembly 13 is covered on the cup body assembly 12. After the food processor 10 finishes working, the cup cover assembly 13 can be taken down from the cup body assembly 12. In some embodiments, the lid assembly 13 can be opened to add food during cooking by the cooking machine 10. Lid assembly 13 includes lid handle 26. When lid assembly 13 is closed on cup assembly 12, lid handle 26 is in abutting engagement with cup handle 25 and lid assembly 13 is in place. In one embodiment, lid assembly 13 may be screwed onto cup assembly 12 and rotated into position such that lid assembly 13 covers cup assembly 12. In another embodiment, lid assembly 13 may be closed in place from top to bottom with lid assembly 13 covering cup assembly 12. In one embodiment, lid assembly 13 is removably assembled to bowl assembly 12 and is separable from bowl assembly 12. In another embodiment, lid assembly 13 is hingedly connected to cup assembly 12.

In one embodiment, food processor 10 includes a vented cover 15 assembled to lid assembly 13, and steam within cup 24 may be vented from a gap between vented cover 15 and lid assembly 13.

Fig. 4 is an exploded perspective view of one embodiment of the host 11. The host 11 includes a host housing 31, a panel housing 32 assembled to one side of the host housing 31, and a base 33 assembled to a bottom opening of the host housing 31. The host housing 31, the panel housing 32, and the base 33 may form a receiving space. The motor 21 is assembled in the main body housing 31 and can be accommodated in the accommodating space. The rotating shaft of the motor 21 extends out of the top of the main body housing 31 and is connected to the lower clutch 34. The motor 21 is covered with a motor cover 30. The vibration-proof pad 35 is installed on the top surface of the main frame shell 31 to reduce the vibration of the cup body assembly 12 relative to the main frame 11 when the food processor 10 works. The host coupler 27 is assembled to the host housing 31.

The host 11 further includes an operation panel 36 assembled in the host housing 31 and a panel holder 37 supporting the operation panel 36, the operation panel 36 is located at the back of the panel case 32, and the panel case 32 covers the front of the operation panel 36 for operation by a user. The main unit 11 further includes a main control board 38 assembled in the main unit case 31 and a main control board bracket 39 supporting the main control board 38. The main control board 38 may include a PCB board. The main control board 38 can control the operation of the food processor 10. The host 11 further includes a power cord 40 electrically connected to the main control board 38. The power cord 40 may be plugged into an ac power source to provide ac power (e.g., mains power) to the main control board 38.

FIG. 5 is an exploded perspective view of cup assembly 12 and lid assembly 13. A sealing ring 41 is fixed between the cup body 24 and the heating assembly 22, and seals a gap between the bottom end surface of the cup body 24 and the heating plate 22. The heating element 22 is supported against the cup 24 by the holder 42. The cup handle 25 includes a handle body 43, a first handle shell 44 and a second handle shell 45. Handle body 43 may be integrally formed with cup 24, with first handle shell 44 and second handle shell 45 being joined to encase handle body 43. Cup assembly 12 also includes a mount 46 assembled to the bottom of cup 24 and a cup mount 47 secured to mount 46. The cup holder 47 may be fixedly assembled to the cup body 24 by the mounting seat 46. In one embodiment, the mounting seat 46 may be screwed to the bottom of the cup 24.

in one embodiment, a cup coupler 51 is disposed on the top of cup assembly 12, a cup holder coupler 52 is disposed on the bottom of cup assembly 12, and cup holder coupler 52 is electrically connected to cup coupler 51 and electrically mated to host coupler 27 (shown in FIG. 2). The cup coupler 51 and the cup holder coupler 52 are electrically connected by a wire or a metal conductor 53. In one embodiment, cup coupler 51 may be raised above the top surface of cup handle 25.

In one embodiment, lid assembly 13 is provided with lid coupler 55. When lid assembly 13 is closed on cup assembly 12, cup coupler 51 is electrically mated with lid coupler 55. Lid coupler 55 is assembled within lid handle 26. A coupler retainer plate 56 is secured to the bottom of lid handle 26. Lid coupler 55 is secured to coupler retainer plate 56 and is assembled to lid handle 26 by coupler retainer plate 56. Coupler retainer plate 56 may be secured to lid handle 26 by screws, ultrasonic welding, or snap-fit connection.

Fig. 6 is a schematic circuit diagram of an embodiment of the food processor circuit 100. The food processor 10 can include a food processor circuit 100. The food processor circuit 100 includes a load driving circuit 110, a power supply switching circuit 120, a safety switch assembly 130, and a controller 150. The load driving circuit 110 is used to drive a load. In some embodiments, the load may include, but is not limited to, a motor 21 and/or a heating assembly 22. The load driving circuit 110 may include a thyristor.

the controller 150 may be electrically connected to the load driving circuit 110, may control the load driving circuit 110 to drive the load 102, and may control the operations of the motor 21 and the heating assembly 22. For example, the controller 150 may control the on-time of the thyristors of the load driving circuit 110 to control the speed of the motor 21, and/or the heating time of the heating assembly 22.

The power supply switch circuit 120 electrically connects the power supply 101 and the load driving circuit 110, and controls the on/off of a power supply line from the power supply 101 to the load driving circuit 110. The power supply 101 may provide alternating current, such as mains. In one embodiment, the power source 101 may transmit mains power through the neutral line N and the live line L. When the power supply switch circuit 120 is turned on, the power supply line from the power supply 101 to the load driving circuit 110 is turned on, and the power output by the power supply 101 can be provided to the load driving circuit 110 to drive the load to work. When the power supply switching circuit 120 is turned off, the power supply line from the power supply 101 to the load driving circuit 110 is cut off, and the load is powered off and stops working.

In one embodiment, the power switch circuit 120 is electrically connected between the power line L and the load driving circuit 110, and controls the on/off of the power line L to the load driving circuit 110. In the illustrated embodiment, the power switching circuit 120 is connected between the live line L and the load, and the load driving circuit 110 is connected through the load, and the load driving circuit 110 is further connected to the neutral line N. In another embodiment, the power supply switch circuit 120 is electrically connected between the neutral line N and the load driving circuit 110, and controls the on/off of the neutral line N to the load driving circuit 110. In another embodiment, the power switch circuit 120 is electrically connected between the live line L and the load driving circuit 110, and electrically connected between the neutral line N and the load driving circuit 110, and controls on/off of the live line L to the load driving circuit 110 and on/off of the neutral line N to the load driving circuit 110.

The power supply switch circuit 120 includes an electrically controlled switch 121 electrically connecting the power source 101 and the load drive circuit 110, and an isolation drive circuit 122 electrically connected to the electrically controlled switch 121. When the electronic control switch 121 is turned on, the power supply line from the power source 101 to the load driving circuit 110 is cut off. When the electrically controlled switch 121 is closed, the power source 101 may supply power to the load driving circuit 110.

In the illustrated embodiment, the food processor circuit 100 includes a power circuit 160 electrically connected to the power source 101 for converting the ac power output by the power source 101. The power supply circuit 160 may convert a strong current into a weak current, convert an ac strong current into a weak dc current such as 12V or 9V, and supply the power to the power supply control circuit 120, the load drive circuit 110, and the controller 150, or supply the power to other circuits. The power supply circuit 160 may include a switching power supply. The electronically controlled switch 121 is electrically connected to the power circuit 160. When the electric control switch 121 is switched on, the circuit is closed when the weak current output by the power circuit 160 is output, so that the strong current output by the power 101 flows; the electric control switch 121 is opened when weak current is not conducted, so that strong current cannot pass through; therefore, the on-off of strong current is controlled by the on-off of weak current.

The safety switch assembly 130 is disposed on the cup body assembly 12 and electrically connected to the power switch circuit 120. The safety switch assembly 130 includes a first contact 131 and a second contact 132 disposed separately from the first contact 131, the first contact 131 being electrically connected to the power supply switch circuit 120, and the second contact 132 being grounded or connected to a dc power supply terminal. The dc power supply terminal may be connected to an output terminal of the power circuit 160, and the power circuit 160 may provide dc power, such as 12V dc power, through the dc power supply terminal.

In the illustrated embodiment, the second contact 132 is grounded. In one embodiment, the first contact 131 is electrically connected to the isolated drive circuit 122 of the power switching circuit 120. The first contact 131 may be connected to the KEYOFF terminal of the power switch circuit 120 via a KEYOFF pin of the cup coupler 52 and a corresponding pin of the host coupler 27 (shown in fig. 4). The pins of the cup coupler 52 are shown in fig. 6, and the pins of the host coupler 27 correspond one-to-one to the pins of the cup coupler 52, so the host coupler 27 is not shown. The second contact 132 is grounded through the GND pin of the cup coupler 52 and the corresponding pin of the host coupler 27.

In some embodiments, cap assembly 13 is provided with trigger module 140. When the lid assembly 13 is closed on the cup assembly 12, the trigger module 140 turns on the safety switch assembly 130, and the first contact 131 and the second contact 132 are electrically connected. When the cap assembly 13 is opened, the safety switch assembly 130 is opened and the first and second contacts 131 and 132 are opened.

In one embodiment, the safety switch assembly 130 may include a cup coupler 51 (shown in fig. 5), the first contact 131 being one leg of the cup coupler 51 and the second contact 132 being another leg of the cup coupler 51. The trigger module 140 may include a lid coupler 55 (shown in FIG. 5), the first trigger pin 141 being one pin of the lid coupler 55, and the second trigger pin 142 being the other pin of the lid coupler 55.

In another embodiment, the safety switch assembly 130 includes a trigger switch that is a mechanical switch, such as a microswitch. The first contact 131 is one contact of the trigger switch and the second contact 132 is the other contact of the trigger switch. When lid assembly 13 is closed, trigger module 140 may push the trigger switch to close the trigger switch, thereby electrically connecting first contact 131 and second contact 132.

In another embodiment, the safety switch assembly 130 includes a first conductive member and a second conductive member, and the triggering module 140 includes a conductive triggering member. The first contact 131 is a contact point of the first conductive member and the conductive trigger member, and the second contact 132 is a contact point of the second conductive member and the conductive trigger member. When lid assembly 13 is closed, the conductive trigger is interposed between the first and second conductive members to electrically connect the first and second conductive members, thereby electrically connecting first and second contacts 131 and 132.

In another embodiment, the safety switch assembly 130 includes a sensing switch and the triggering module 140 includes a sensing trigger. The first contact 131 is one contact of the inductive switch and the second contact 132 is the other contact of the inductive switch. When the cap assembly 13 is closed, the inductive switch is closed by sensing the inductive trigger, so that the first contact 131 and the second contact 132 are electrically connected. The inductive switch may comprise a magnetically controlled switch, such as a reed switch, and the inductive trigger comprises a magnetic member. In other embodiments, the safety switch assembly 130 and the trigger module 140 may take other forms.

The controller 150 is electrically connected to the isolation control circuit 122. When the cap assembly 13 is covered on the cup body assembly 12, the safety switch assembly 120 is turned on, and the controller 150 controls the on/off of the electric control switch 121 through controlling the isolation driving circuit 122. When cap assembly 13 is opened, safety switch assembly 120 is turned off, turning off electrical switch 121. When the cap assembly 13 is covered on the cup body assembly 12, the first contact 131 and the second contact 132 are electrically connected, so that the power supply switch circuit 110 is connected between the dc power supply terminal and the ground, and the controller 150 can control the isolation driving circuit 122 to control the on/off of the electronic control switch 121. The controller 150 can control the isolation driving circuit 122 to be conducted, so that the electronic control switch 121 is turned on by weak current and closed. The controller 150 can control the isolation driving circuit 122 to be turned off, so that the electronic control switch 121 is turned on by cutting off weak current. Controller 150 may include a single chip or other microprocessor.

the safety switch assembly 130 of the food processer circuit 100 is electrically connected with the power supply switch circuit 120, and can control the on-off of the hardware circuit of the power supply switch circuit 120, and when the cup cover assembly 13 is opened, the power supply switch circuit 120 can be turned off, the power supply line from the power supply 101 to the load driving circuit 110 is cut off, so that the load driving circuit 110 is powered off, the driving work is stopped, and the cover opening protection is realized. For the mode that utilizes mechanical control cooking drive circuit such as safe connecting rod and micro-gap switch to switch on or off in order to realize the protection of uncapping, this application embodiment can avoid not cutting off the power supply or not the problem of circular telegram because of load drive circuit that micro-gap switch stroke, assembly error and/or dimensional error etc. caused, it is safer, and save the cost. When the cup cover assembly 13 is opened, the power supply switch circuit 120 is disconnected on hardware, so that dangerous actions caused by program confusion can be effectively avoided, and the cover opening protection of the food processor can be effectively realized. In addition, the safety switch assembly 120 includes an electric control switch 121 and an isolation driving circuit 122, the controller 150 controls the on/off of the electric control switch 121 through controlling the isolation driving circuit 122, when the cup lid assembly 13 is closed, the on/off of the electric control switch 121 is further controlled through software, the safety is higher through the combination of hardware and software, and the isolation driving circuit 122 can isolate the controller 150 from the electric control switch 121, so that the mutual interference between the power supply of the electric control switch 121 and the power supply of a controller port is avoided.

Fig. 7 is a circuit diagram illustrating one embodiment of the power switching circuit 120. Referring to fig. 6 and 7, the electronic control switch 121 includes a relay RLY402, and the switch of the relay RLY402 is connected to the power source 101. One end of the coil of relay RLY402 is connected to power supply circuit 160, and the other end is connected to isolation drive circuit 122. In one embodiment, the relay RLY402 is connected in parallel with a freewheeling diode D402, and the negative pole of the freewheeling diode D402 is connected to one end of the electromagnetic coil of the relay RLY402 connected to the power supply circuit 63 and the positive pole is connected to the other end, thereby preventing sudden changes in voltage and current.

In some embodiments, the isolation driving circuit 122 includes a transistor Q601 electrically connected to the electrically controlled switch 121, and a photo-coupler U4 electrically connected to the transistor Q601 and the controller 150, wherein the transistor Q601 is electrically connected to the first contact 131, and the controller 150 controls on/off of the photo-coupler U4 to control on/off of the transistor Q601 when the lid assembly 13 is closed, so as to control on/off of the electrically controlled switch 121. In the illustrated embodiment, the transistor Q601 is electrically connected to the coil of the relay RLY402, and can control the power on/off of the coil of the relay RLY 402. The primary side of the photocoupler U4 is connected with the controller 150, and the secondary side is connected with the triode Q601. Isolation is achieved using a photo-coupler U4.

In one embodiment, the transistor Q601 has a base connected to the optocoupler U4, a collector connected to the electronically controlled switch 121, an emitter connected to the first contact 131, and a second contact 132 connected to ground. The transistor Q601 is an NPN-type transistor. A resistor R605 may be connected between the base of the transistor Q601 and the photocoupler U4, and a resistor R606 may be connected between the base and the first contact 131.

When the cup cover assembly 13 is covered, the emitter of the triode Q601 is grounded, and the controller 150 controls the on-off of the photoelectric coupler U4 to control the on-off of the triode Q601. When the photoelectric coupler U4 is conducted, the triode Q601 is conducted, and the relay RLY402 is electrified and closed. When the photoelectric coupler U4 is turned off, the triode Q601 is cut off, and the relay RLY402 is powered off and turned off.

With continued reference to fig. 6, the food processor circuit 100 includes a load switch circuit 170 electrically connected between the load drive circuit 110 and at least two loads. In one embodiment, the load includes a motor 21 and a heating assembly 22. The load switch circuit 170 connects the motor 21 and the heating assembly 22. Fig. 8 is a circuit diagram illustrating one embodiment of the load driving circuit 110 and the load switching circuit 170. Referring to fig. 6 and 8, the load switch circuit 170 includes a switch RLY401, and the controller 150 is electrically connected to the switch RLY401, and controls the switch RLY401 to switch the load driving circuit 110 between at least two loads.

In one embodiment, the switch RLY401 can comprise a single pole double throw relay with one moving contact connected to the load drive circuit 110, one stationary contact connected to the motor 21, and the other stationary contact connected to the heating assembly 22. The coil of the single-pole double-throw relay is electrically connected to the controller 150, and the controller 150 controls the on/off of the coil of the single-pole double-throw relay, thereby actuating the switch to electrically connect the load driving circuit 110 to the motor 21 or the heating unit 22. Thus, the motor 21 and the heating assembly 22 are driven in a time-sharing manner by the same load driving circuit 110, so that components can be saved and the circuit can be simplified. In one embodiment, the switch RLY401 is connected in parallel with a switching freewheeling diode D401.

In one embodiment, load driving circuit 110 includes a silicon controlled SCR201 electrically connected to controller 150 and a switch RLY 401. The controller 150 may control the on-time of the silicon controlled SCR 201.

With continued reference to fig. 6, the controller 150 is electrically connected to the temperature sensor 23, and the temperature sensor 23 may be electrically connected to the controller 150 via the cup holder coupler 52 and the host coupler 27. The controller 150 may detect the electric signal of the temperature sensor 23 to detect the temperature of the food material.

The load driving circuit 110, the power supply switch circuit 120, the controller 150, the power supply circuit 160, and the load switch circuit 170 may be disposed in the host 11, and may be disposed on the main control board 38 (shown in fig. 4) of the host 11.

fig. 9 is a circuit diagram of one embodiment of the food processor circuit 100. The circuit diagram shown in fig. 9 includes the circuits shown in fig. 7 and 8. Referring to fig. 6 and 9, the power circuit 160 includes an isolated power circuit 162 and a non-isolated power circuit 161, the isolated power circuit 162 is electrically connected to the electronic control switch 121 to supply power to the electronic control switch 121, and the non-isolated power circuit 161 is electrically connected to the controller 150 and the load driving circuit 110 to supply power to the controller 150 and the load driving circuit 110. The power circuit 160 includes a conversion chip U1, which converts the ac power of the power source 101 into dc power. The non-isolated power supply circuit 161 is electrically connected to the conversion chip U1, and outputs a non-isolated power, for example, a 9V non-isolated power.

The controller 150 is electrically connected to the load driving circuit 110 in a non-isolated manner, and controls the load driving circuit 110 to drive the load. The controller 150 and the load driving circuit 110 receive non-isolated electricity, and the controller 150 and the load driving circuit 110 can be electrically connected in a non-isolated mode, so that an isolation photocoupler for isolating the controller 150 and the silicon controlled rectifier SCR201 is omitted, components are saved, and cost is reduced. Non-isolated power supply circuit 161 may also be electrically connected to switch RLY401 to supply power to switch RLY 401. Controller 150 is electrically connected to switch RLY401 in non-isolated relation.

the ground GND of the non-isolated power supply circuit 161 is electrically connected to the switching chip U1, and the non-isolated electrical output terminal (e.g., 9V output terminal) is electrically connected to the neutral line N. The non-isolated power supply circuit 161 includes an electrolytic capacitor C106, a capacitor C107, and an output resistor R110 connected in parallel between a ground GND and a non-isolated electrical output terminal.

The isolation power circuit 162 is electrically connected with the conversion chip U1 and the neutral line N, and includes an isolation transformer T1, a diode D3 connected in series with the secondary side of the isolation transformer T1, an electrolytic capacitor C109, and a resistor R5 connected in parallel with the electrolytic capacitor C109. The isolated power supply circuit 162 may output isolated power, such as 12V isolated power. The isolated power may be provided to the electronically controlled switch 121 and may also be provided to the secondary of the opto-coupler U4. The opto-coupler U4 isolates the isolated power of the electronically controlled switch 121 from the non-isolated power of the controller 150. The output of the isolated power circuit 162 is the dc supply described above.

In some embodiments, the food processor circuit 100 includes a current detection circuit 103 connected to the neutral line N, a voltage detection circuit 104 connected to the live line L, and a zero-crossing detection circuit 105 electrically connected to the electrically controlled switch 121. The food processor circuit 100 can further include a display circuit 106 electrically connected to the controller 150, a temperature detection circuit connected to the controller 150 and the temperature sensor, a playback circuit electrically connected to the controller 150, and a key circuit 109 connected to the controller 150. One or more of the above circuits may be omitted depending on the application, or the food processor circuit 100 may include other circuits.

Fig. 10 is a schematic diagram of another embodiment of the food processor circuit 200. The food processor circuit 200 shown in fig. 10 is similar to the food processor circuit 100 shown in fig. 6, and compared to the food processor circuit 100 shown in fig. 6, the load driving circuit 210 of the food processor circuit 200 shown in fig. 10 includes a first driving circuit 211 electrically connected to a first load (e.g., the motor 21), and a second driving circuit 212 electrically connected to a second load (e.g., the heating assembly 22). The first driving circuit 211 and the second driving circuit 212 are electrically connected to a load through a load switch circuit 270. The first driving circuit 211 and the second driving circuit 212 drive corresponding loads, respectively.

Fig. 11 shows that the load switch circuit 270 of the food processor circuit 100 includes a double-pole double-throw switch RLY1, and a double-pole double-throw switch RLY1 is electrically connected between the first driving circuit 211 and the first load, and electrically connected between the second driving circuit 212 and the second load, and simultaneously turns on or off the lines of the first driving circuit 211 and the second driving circuit 212 to the corresponding loads. In the illustrated embodiment, the motor 21 and the heating assembly 22 may be driven by different drive circuits, and may be operated simultaneously, while being turned off. In one embodiment, the double pole double throw switch RLY1 may comprise a double pole double throw relay.

The controller 250 is electrically connected to the first driving circuit 211, the second driving circuit 212, and the double pole double throw switch RLY1, and the controller 250 controls the first driving circuit 211 and the second driving circuit 212, respectively, and controls the operation of the double pole double throw switch RLY 1. In one embodiment, the controller 250 and the first drive circuit 211, the second drive circuit 212, and the double pole double throw switch RLY1 may be electrically connected in a non-isolated manner.

fig. 12 is a schematic diagram of another embodiment of the food processor circuit 300. The food processor circuit 300 shown in fig. 12 is similar to the food processor circuit 200 shown in fig. 10, and compared to the food processor circuit 200 shown in fig. 10, the first drive circuit 211 and the second drive circuit 212 of the food processor circuit 300 shown in fig. 12 are electrically connected to the first power supply line of the power supply 101, and are electrically connected to the second power supply line of the power supply 101 through the load switch circuit 370. In one embodiment, the first supply line may be one of the live line L and the neutral line N, and the second supply line is the other. The first driving circuit 211 and the second driving circuit 212 are similar to the first driving circuit 211 and the second driving circuit 212 shown in fig. 10 and 11.

Fig. 13 is a circuit diagram illustrating one embodiment of the supply switch circuit 120 and the load switch circuit 370 shown in fig. 12. Fig. 14 is a circuit diagram showing the connection of the load driving circuit 210 and the load. Referring to fig. 12-14, the load switch circuit 370 of the food processor circuit 300 includes a single-pole single-throw switch RLY403 electrically connected to the first drive circuit 211 and the second drive circuit 212, and the first drive circuit 211 and the second drive circuit 212 are electrically connected to the second power supply line of the power supply 101 through the single-pole single-throw switch RLY 403.

In the illustrated embodiment, the first drive circuit 211 and the second drive circuit 212 are connected to the neutral line N. The first driving circuit 211 is connected to the motor 21, and is connected to the single pole single throw switch RLY403 through the motor 21, and the single pole single throw switch RLY403 is further connected to the live wire L. The second driving circuit 212 is connected to the heating element 22, and is connected to the single-pole single-throw switch RLY403 through the heating element 22, and the single-pole single-throw switch RLY403 is further connected to the live line L. The motor 21 and the heating element 22 are connected to the same end of a single pole single throw switch RLY403, both connected to the live line L through the single pole single throw switch RLY 403. The single-pole single-throw switch RLY403 can control the power on and off of the first driving circuit 211 and the second driving circuit 212 at the same time, namely, the power on and off of the load, and the used switching device is simple and the line connection is simple.

In one embodiment, single pole, single throw switch RLY403 is electrically connected between electrically controlled switch 121 and common terminal COM _ L to which the first and second loads are connected. In the illustrated embodiment, the single pole, single throw switch RLY403 has one end connected to the line L through the electrically controlled switch 121 and the other end electrically connected to the motor 21 and the heating element 22. When the electronic control switch 121 is closed, the on/off of the single-pole single-throw switch RLY403 can be controlled to control the on/off of the first driving circuit 211 and the second driving circuit 212. The single pole single throw switch RLY403 may comprise a single pole single throw relay and may be electrically connected to the controller 250. The single pole single throw relay may be connected to a non-isolated power circuit and the controller 250 may be in non-isolated electrical connection with the single pole single throw relay.

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 (11)

1. The utility model provides a cooking machine circuit for cooking machine, cooking machine includes cup body component (12) and bowl cover subassembly (13), its characterized in that, cooking machine circuit includes:

a load driving circuit (110);

the power supply switch circuit (120) is electrically connected with a power supply (101) and the load driving circuit (110) and controls the on-off of a power supply line from the power supply (101) to the load driving circuit (110), and the power supply switch circuit (120) comprises an electric control switch (121) which is electrically connected with the power supply (101) and the load driving circuit (110) and an isolation driving circuit (122) which is electrically connected with the electric control switch (121);

The safety switch assembly (130) is arranged on the cup body assembly (12) and is electrically connected with the power supply switch circuit (120); and

a controller (150) electrically connected to the isolation control circuit (122); when the cup cover assembly (13) covers the cup body assembly (12), the safety switch assembly (130) is conducted, and the controller (150) controls the on-off of the electric control switch (121) by controlling the isolation driving circuit (122); when the cup cover assembly (13) is opened, the safety switch assembly (130) is disconnected, so that the electric control switch (121) is turned off.

2. The food processor circuit of claim 1, wherein: the safety switch assembly (130) comprises a first contact (131) and a second contact (132) which is arranged separately from the first contact (131), the first contact (131) is electrically connected with the power supply switch circuit (120), and the second contact (132) is grounded or connected with a direct current power supply end.

3. The food processor circuit of claim 2, wherein: the isolation driving circuit (122) comprises a triode (Q601) electrically connected to the electric control switch (121) and a photoelectric coupler (U4) electrically connected with the triode (Q601) and the controller (150), the triode (Q601) is electrically connected with the first contact (131), and the controller (150) controls the on-off of the photoelectric coupler (U4) to control the on-off of the triode (Q601) when the cup cover assembly (13) is covered and combined so as to control the on-off of the electric control switch (121).

4. The food processor circuit of claim 3, wherein: the base electrode of the triode (Q601) is connected with the photoelectric coupler (U4), the collector electrode of the triode is connected with the electric control switch (121), the emitter electrode of the triode is connected with the first contact (131), and the second contact (132) is grounded.

5. the food processor circuit of claim 1, wherein: the cooking machine circuit is including the electricity connection power supply circuit (160) of power (101), the conversion the alternating current of power (101) output, power supply circuit (160) are including keeping apart power supply circuit (162) and non-isolation power supply circuit (161), keep apart power supply circuit (162) with automatically controlled switch (121) electricity is connected, gives automatically controlled switch (121) power supply, non-isolation power supply circuit (161) electricity connect in controller (150) with load drive circuit (110), give controller (150) with load drive circuit (110) power supply.

6. The food processor circuit of claim 5, wherein: the controller (150) is electrically connected with the load driving circuit (110) in a non-isolated mode, and controls the load driving circuit (110) to drive the load.

7. The food processor circuit of claim 1, wherein: the food processor circuit comprises a change-over switch (RLY401) electrically connected between the load driving circuit (110) and at least two loads, the controller (150) is electrically connected with the change-over switch (RLY401) and controls the change-over switch (RLY401) to enable the load driving circuit (110) to be switched between the at least two loads.

8. The food processor circuit of claim 1, wherein: the load driving circuit (110) comprises a first driving circuit (211) electrically connected with a first load and a second driving circuit (212) electrically connected with a second load, the food processor circuit comprises a double-pole double-throw switch (RLY1), the double-pole double-throw switch (RLY1) is electrically connected between the first driving circuit (211) and the first load and between the second driving circuit (212) and the second load, and the first driving circuit (211) and the second driving circuit (212) are simultaneously connected or disconnected to the lines of the corresponding loads.

9. The food processor circuit of claim 1, wherein: the load driving circuit (110) comprises a first driving circuit (211) electrically connected with a first load and a second driving circuit (212) electrically connected with a second load, the food processor circuit comprises a single-pole single-throw switch (RLY403) electrically connected with the first driving circuit (211) and the second driving circuit (212), the first driving circuit (211) and the second driving circuit (212) are electrically connected with a first power supply line of the power supply (101), and the second power supply line of the power supply (101) is electrically connected with the single-pole single-throw switch (RLY 403).

10. The food processor circuit of claim 9, wherein: the single pole single throw switch (RLY403) is electrically connected between the electrically controlled switch (121) and a common terminal to which the first load and the second load are connected.

11. a food processor, its characterized in that, it includes:

a host (11);

The cup body component (12) can be assembled on the main machine (11);

The cup cover assembly (13) can be covered on the cup body assembly (12); and

The food processor circuit of any one of claims 1-10.