CN215272244U - Food processer circuit and food processer - Google Patents

Abstract

The application provides a cooking machine circuit and cooking machine. The food processor circuit comprises a detection element, a controller, a power supply circuit and a protection circuit. The controller comprises a power supply end grounding end and a detection end; the power supply circuit is connected with the power supply end and the grounding end and supplies power to the controller, and comprises a power supply capacitor which is connected between the power supply end and the grounding end; the protection circuit and the detection element are connected in series between the detection end and the grounding end, the protection circuit comprises a first connecting end and a second connecting end, the first connecting end is connected with the detection end, the second connecting end is connected with the grounding end, and when the voltage of the first connecting end is higher than that of the second connecting end, the protection circuit is conducted; when the voltage of the first connecting end is lower than that of the second connecting end, the protection circuit is cut off. The cooking machine comprises a host, a cup assembly and a cooking machine circuit. The cup assembly is detachably assembled on the main machine. The probability that the food processor is damaged can be reduced.

Description

Food processer circuit and food processer

Technical Field

The application relates to the field of 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. The food processor can comprise a soybean milk machine, a stirrer or a wall breaking food processor and other machines for crushing and stirring food materials. Some food machines have a high probability of being damaged.

SUMMERY OF THE UTILITY MODEL

The application provides a modified cooking machine circuit and cooking machine can reduce the probability that the cooking machine is impaired.

The application provides a cooking machine circuit includes:

a detection element;

the controller comprises a power supply end, a grounding end and a detection end;

the power supply circuit is connected with the power end and the grounding end and supplies power to the controller, and comprises a power supply capacitor which is connected between the power end and the grounding end;

the protection circuit is connected between the detection end and the grounding end in series with the detection element and comprises a first connecting end and a second connecting end, the first connecting end is connected with the detection end, the second connecting end is connected with the grounding end, and when the voltage of the first connecting end is higher than that of the second connecting end, the protection circuit is conducted; and when the voltage of the first connecting end is lower than that of the second connecting end, the protection circuit is cut off.

In some embodiments of the present application, the power supply circuit includes a power supply capacitor connected between a power end and a ground end of the controller, the detection element and the protection circuit are connected in series between a detection end and the ground end of the controller, the protection circuit includes a first connection end connected to the detection end and a second connection end connected to the ground end, the protection circuit is turned on when a voltage of the first connection end is higher than a voltage of the second connection end, and the protection circuit is turned off when the voltage of the first connection end is lower than the voltage of the second connection end. Therefore, when the circuit line between the protection circuit and the detection end is abnormal (for example, when other circuit lines are connected to the circuit line between the protection circuit and the detection end), the protection circuit can prevent the voltage of other circuit lines from being input into the controller, so that the controller is prevented from being damaged. Therefore, the probability that the controller is damaged is reduced, and the probability that the food processor is damaged is further reduced.

Further, the protection circuit includes a one-way conduction device, the one-way conduction device is connected between the first connection end and the second connection end, the one-way conduction device is turned on when the voltage of the first connection end is higher than the voltage of the second connection end, and the one-way conduction device is turned off when the voltage of the first connection end is lower than the voltage of the second connection end. In some embodiments, the unidirectional conduction of the circuit is realized through the unidirectional conduction device, so that the protection effect is achieved, and the circuit is simpler.

Further, the unidirectional device comprises a diode, an anode of the diode is connected with the first connection end, and a cathode of the diode is connected with the second connection end. In some embodiments, the diode is a unidirectional conducting device which is easy to obtain, and is low in cost, and when the diode is conducted, the voltage drop is small, the power consumption is low, and the influence on a circuit is small.

Further, detecting element includes the temperature sensing device, cooking machine circuit includes detection circuitry, the temperature sensing device passes through detection circuitry with the detection end is connected, the controller is according to the signal of telecommunication that the detection end was gathered, confirms the temperature that the temperature sensing device sensing arrived. In some embodiments, the detection circuit converts the temperature sensed by the temperature sensing device into an electrical signal that can be recognized by the controller, so as to facilitate signal acquisition by the controller.

Further, the detection circuit comprises a detection resistor and a detection power supply end, the detection resistor, the temperature sensing device and the one-way conduction device are connected in series between the detection power supply end and the grounding end, the detection resistor is connected in series between the detection power supply end and the temperature sensing device, the temperature sensing device is connected with the grounding end through the one-way conduction device, and the detection end is connected between the detection resistor and the temperature sensing device. In some embodiments, when the unidirectional conducting device is conducted, the detection resistor, the temperature sensing device and the unidirectional conducting device divide the voltage of the detection power supply end, and the temperature sensed by the temperature sensing device can be determined by detecting the divided voltage on the temperature sensing device, so that the circuit is simple.

Furthermore, the detection circuit comprises a current-limiting resistor, one end of the current-limiting resistor is connected with the detection end, and the other end of the current-limiting resistor is connected between the detection resistor and the temperature sensing device; and/or

The detection circuit comprises a filter capacitor, one end of the filter capacitor is connected with the detection end, and the other end of the filter capacitor is connected with the grounding end. In some embodiments, the current limiting resistor can limit the current of the detection end, and the controller is prevented from being burnt out due to the overlarge current. The filter capacitor can filter the electric signals collected by the detection end, so that the signal stability is improved.

Further, the temperature sensing device includes a thermistor. In some embodiments, the thermistor has high sensitivity to temperature changes and is low cost

Further, the power supply capacitor comprises an electrolytic capacitor. In some embodiments, the electrolytic capacitor has large capacitance, low price and low cost.

The application provides a cooking machine includes:

a host;

the cup assembly is detachably assembled on the host machine; and

the cooking machine circuit of any one of the above.

Further, the cooking machine circuit the controller set up in the host computer, detecting element set up in the cup subassembly. In some embodiments, the detection element is disposed on the cup assembly, so that the detection effect of the detection element is better.

Drawings

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

FIG. 2 is an exploded schematic view of a cup assembly of the food processor of FIG. 1;

fig. 3 is a circuit block diagram of an food processor circuit provided in an embodiment of the present application;

fig. 4 is a partial circuit diagram of the food processor circuit of fig. 3;

fig. 5 is a circuit diagram of another portion of the food processor circuit of fig. 3;

fig. 6 is a circuit diagram of another portion of the food processor circuit of fig. 3.

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 otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of the terms "a" or "an" and the like in the description and in the claims of this application do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" includes two, and is equivalent to at least two. 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.

Fig. 1 is a schematic view of a food processor 100 according to an embodiment of the present application. Fig. 2 is an exploded schematic view of the cup assembly 11 included in the food processor 100 of fig. 1.

Referring to fig. 1 and 2, the food processor 100 includes a main body 11 and a cup assembly 12. The cup assembly 12 is detachably assembled to the main body 11. In this embodiment, the host 11 may be in the form of a base, which provides power to the food processor 100 and controls the food processor 100 to work. In other embodiments, the host 11 may be in the form of a handpiece, and the host 11 may be adapted to cover the cup assembly 12.

In some embodiments, cup assembly 12 includes a cup body 123, and a load 120 and a stir blade assembly 122 disposed within cup body 123. The load 120 includes a heating assembly 121. The heating assembly 121 may be in the form of a heating plate, and is assembled at the bottom of the cup body 123, and encloses a food material accommodating cavity 1231 with the cup body 123. The food material accommodating cavity 1231 may be used to accommodate food materials. The stirring blade assembly 122 may be assembled to the heating assembly 121. The heating assembly 121 may be used to heat the food material inside the food material accommodating cavity 1231. The blending blade assembly 122 may be used to whip the food material within the food material receiving cavity 1231. In some embodiments, a motor (not shown) is disposed inside the main body 11, the motor is connected to the stirring blade assembly 122, the main body 11 drives the motor to rotate, and further drives the stirring blade assembly 122 to rotate, so as to stir the food material. In some embodiments, the heating assembly 121 is electrically connected to the main machine 11, and the main machine 11 controls the power on/off of the heating assembly 121 and the heating power of the heating assembly 121, so as to heat the food material.

Fig. 3 is a circuit block diagram of the food processor circuit 200 according to an embodiment of the present application. The food processor 100 can include a food processor circuit 200.

Referring to fig. 1 to 3, the food processor circuit 200 includes a detection element 21, a controller 22, a power supply circuit 23, and a protection circuit 24. The controller 22 includes a power supply terminal VCC, a ground terminal GND, and a detection terminal CHK. The power supply circuit 23 is connected to a power supply terminal VCC and a ground terminal GND, and supplies power to the controller 22. The power supply circuit 23 includes a power supply capacitor C1, and the power supply capacitor C1 is connected between a power supply terminal VCC and a ground terminal GND. The power supply circuit 23 supplies power to the controller 22 through the power supply capacitor C1. In some embodiments, the power supply circuit 23 may charge the power supply capacitor C1 such that the voltage of the power supply capacitor C1 gradually increases to a voltage required for the controller 22 to operate normally (e.g., + 5V), thereby preventing the controller 22 from being burned out due to excessive current when the controller is powered. In some embodiments, the power supply capacitor C1 includes an electrolytic capacitor, which has a large capacitance, is inexpensive, and is low cost.

In some embodiments, the detection element 21 and the protection circuit 24 are connected in series between the detection terminal CHK and the ground terminal GND. The protection circuit 24 includes a first connection terminal CNT1 and a second connection terminal CNT2, the first connection terminal CNT1 is connected to the detection terminal CHK, and the second connection terminal CNT2 is connected to the ground terminal GND. In this embodiment, the protection circuit 24 is connected in series between the detection element 21 and the ground GND, and the first connection terminal CNT1 of the protection circuit 24 is connected to the detection terminal CHK through the detection element 21. In other embodiments, the protection circuit 24 is connected in series between the detection element 21 and the detection terminal CHK, and the second connection terminal CNT2 of the protection circuit 24 is connected to the ground terminal GND through the detection element 21.

In some embodiments, when the voltage of the first connection terminal CNT1 is higher than the voltage of the second connection terminal CNT2, the protection circuit 24 is turned on; when the voltage of the first connection terminal CNT1 is lower than the voltage of the second connection terminal CNT2, the protection circuit 24 is turned off. When the protection circuit 24 is turned on, a current path may be formed between the detection terminal CHK of the controller 22 and the ground terminal GND. The controller 22 collects the electrical signal of the detecting element 21 through the detecting terminal CHK, and determines the temperature, the liquid amount, etc. of the food material in the cup body 23 according to the collected electrical signal. The detection element 21 may include a temperature sensing device, a liquid amount sensing device, and the like. For convenience of detection, the detecting element 21 may be disposed at a different position from the controller 22, for example, in this embodiment, the main body 11 may include a control circuit board (not shown), the controller 22 may be disposed on the control circuit board in the main body 11, and the detecting element 21 may be disposed on the load 120 (e.g., the heating assembly 121) of the cup assembly 12, so that the detecting element 21 can better sense the temperature of the food material. When the cup assembly 12 is assembled to the main body 11, the cup assembly 12 and the main body 11 are electrically connected by a coupler (not shown). The detection element 21 may be connected to the controller 22 through a coupler so that the controller 22 can detect the temperature of the food material. Meanwhile, the load 120 may be connected to an ac power source (e.g., commercial power) through the coupler and the control circuit board, and the ac power source drives the load 120 to operate (e.g., drives the heating component 121 to generate heat to heat the food material). When the circuit line between the detection element 21 and the controller 22 is a weak current circuit and the circuit line between the load 120 and the ac power supply is a strong current circuit, the strong current circuit of the load 120 may touch the weak current circuit of the controller 22 when the circuit line is broken.

In the present embodiment, when an abnormal condition occurs in the food processor circuit 200, for example, the circuit line between the protection circuit 24 and the detection terminal CHK is broken and touches another circuit line (for example, the strong electric line of the heating unit 121), when other circuit lines are connected to the circuit line between the protection circuit 24 and the detection terminal CHK (the circuit line between the protection circuit 24 and the detection terminal CHK is short-circuited with other circuit lines), if the voltage of the other circuit lines is high (for example, the voltage of the positive half cycle of the alternating current), the voltage of the first connection terminal CNT1 of the protection circuit 24 is higher than the voltage of the second connection terminal CNT2, the protection circuit 24 is turned on, the voltage of the ground terminal GND is raised, the power supply capacitor C1 is discharged, the power supply voltage of the controller 22 is lowered, when the power supply voltage of the controller 22 is lower than the threshold value, the controller 22 is reset, and other circuit lines connected between the protection circuit 24 and the detection terminal CHK can be controlled to be disconnected from the power supply. In this way, the voltage on other circuit lines (for example, strong ac power) is prevented from being input to the controller 22, which causes a problem that the controller 22 is damaged. If the voltage of the other circuit lines is low (for example, the voltage of the negative half cycle of the alternating current), the voltage of the first connection terminal CNT1 of the protection circuit 24 is lower than the voltage of the second connection terminal CNT2, the protection circuit 24 is turned off, the detection terminal CHK is disconnected from the ground terminal GND, the other circuit lines connected between the protection circuit 24 and the detection terminal CHK are disconnected from the controller 22, the voltages on the other circuit lines have no influence on the controller 22, and the problem that the controller 22 is damaged due to the fact that the voltages (for example, the alternating current strong current) on the other circuit lines are input to the controller 22 is solved.

In some embodiments, the protection circuit 24 may protect the controller 22 when other circuit lines are connected between the protection circuit 24 and the detection terminal CHK. Therefore, the position of the protection circuit 24 can be set according to the actual condition of the circuit. For example, in this embodiment, the circuit line connected to the detection terminal CHK of the controller 22 is connected to the detection element 21 in the cup 123 via the coupler, and then connected to the ground terminal GND of the controller 22 via the coupler, as for the circuit line between the detection terminal CHK and the ground terminal GND, there is a large probability that the circuit line at least inside the cup 123 touches the circuit line of the load 120, therefore, this part of the circuit line may be disposed between the detection terminal CHK and the protection circuit 24, the protection circuit 24 may be disposed between the detection element 21 and the ground terminal GND, and is disposed on the control circuit board in the main body 11, so that when the circuit of the detecting element 21 in the cup 123 touches the heating element 121, the protection circuit 24 can protect the controller 22, and prevent the controller 22 from being burnt out due to access to a strong electric circuit, so that the probability that the food processor 100 is damaged can be reduced.

In some embodiments of the present application, the food processor circuit 200 includes a detection element 21, a controller 22, a power supply circuit 23 and a protection circuit 24, the controller 22 includes a power supply terminal VCC, a ground terminal GND and a detection terminal CHK, the power supply circuit 23 includes a power supply capacitor C1 connected between the power supply terminal VCC and the ground terminal GND, the detection element 21 and the protection circuit 24 are connected in series between the detection terminal CHK and the ground terminal GND, the protection circuit 24 includes a first connection terminal CNT1 connected to the detection terminal CHK and a second connection terminal CNT2 connected to the ground terminal GND, the protection circuit 24 is turned on when the voltage of the first connection terminal CNT1 is higher than the voltage of the second connection terminal CNT2, and the protection circuit 24 is turned off when the voltage of the first connection terminal 1 is lower than the voltage of the second connection terminal CNT 2. In this way, when an abnormality occurs in the circuit line between the protection circuit 24 and the detection terminal CHK (for example, when another circuit line is connected to the circuit line between the protection circuit 24 and the detection terminal CHK), the protection circuit 24 can prevent a situation that the voltage of the other circuit line is input to the controller 22 and the controller 22 is damaged. In this way, the probability of the controller 22 being damaged is reduced, and the probability of the food processor 100 being damaged is further reduced.

In some embodiments, the power supply circuit 23 includes a power supply circuit 231, and the power supply circuit 231 is connected to an ac power source (e.g., commercial power) for converting ac strong power into dc weak power (e.g., +5V dc weak power), charging the power supply capacitor C1 and supplying power to the controller 22. In this embodiment, the power circuit 231 includes a first output terminal EX1 and a second output terminal EX2, the live line L of the ac power source is connected to the negative plate of the power supply capacitor C1 and the ground terminal GND of the controller 22 through the first output terminal EX1 of the power circuit 231, and the neutral line N of the ac power source is connected to the positive plate of the power supply capacitor C1 and the power terminal VCC of the controller 22 through the second output terminal EX2 of the power circuit 231. In other embodiments, the live line L of the ac power source is connected to the positive plate of the power supply capacitor C1 and the power supply terminal VCC of the controller 22 through the first output terminal EX1 of the power circuit 231, and the neutral line N of the ac power source is connected to the negative plate of the power supply capacitor C1 and the ground terminal GND of the controller 22 through the second output terminal EX2 of the power circuit 231.

In some embodiments, the food processor circuit 200 may include a switch circuit 25, the switch circuit 25 and the load 120 are connected in series between the live line L and the neutral line N, the switch circuit 25 is connected to the controller 22, and the controller 22 may control the switch circuit 25 to be turned off when being reset, so that a circuit line of the load 120 (a circuit line touching a circuit line between the protection circuit 24 and the ground terminal GND) is disconnected from the ac power source, and at the same time, the load 120 is powered off, so that the controller 22 is protected.

In the embodiment shown in fig. 3, if the live line L is short-circuited with the circuit line between the protection circuit 24 and the ground GND, and the voltage of the live line L is greater than the voltage of the neutral line N (i.e. the live line L is a positive half-cycle voltage), the protection circuit 24 is turned on, the power supply capacitor C1 discharges, the power supply capacitor C1 discharges after one or several consecutive ac cycles (if the voltage of the power supply capacitor C1 does not completely decrease to the required voltage in one ac cycle, several consecutive ac cycles need to be discharged), and the controller 22 resets; if the circuit line between the live line L and the protection circuit 24 and the ground GND is short-circuited and the voltage of the live line L is smaller than the voltage of the zero line N (i.e., the live line L is a positive half-cycle voltage), the protection circuit 24 is turned off to protect the controller 22.

In other embodiments, the power circuit 23 may not include the power circuit 231 and is not connected to an ac power source, and in these embodiments, the power circuit 23 includes a dc power source through which the power capacitor C1 is charged to supply power to the controller 22.

Fig. 4 is a partial circuit diagram of the food processor circuit 200 in fig. 3. In the embodiment shown in fig. 4, the protection circuit 24 includes a unidirectional turn-on device 241, the unidirectional turn-on device 241 is connected between the first connection terminal CNT1 and the second connection terminal CNT2, the unidirectional turn-on device 241 is turned on when the voltage of the first connection terminal CNT1 is higher than the voltage of the second connection terminal CNT2, and the unidirectional turn-on device 241 is turned off when the voltage of the first connection terminal CNT1 is lower than the voltage of the second connection terminal CNT 2. The unidirectional conduction of the circuit is realized through the unidirectional conduction device 241, and the circuit is simple. The unidirectional device 241 includes a diode D11, an anode of the diode D11 is connected to the first connection terminal CNT1, and a cathode of the diode D11 is connected to the second connection terminal CNT 2. The diode D11 is a one-way conduction device which is easy to obtain, the cost is low, and when the diode D11 is conducted, the voltage drop is small, the power consumption is low, and the influence on the circuit is small.

In some embodiments, the detection element 21 comprises a temperature sensing means 211, and the temperature sensing means 211 may comprise a thermistor. The thermistor has high sensitivity to temperature change and low cost. The food processor circuit 200 includes the detection circuit 26, and the temperature sensing device 211 is connected with the detection end CHK through the detection circuit 26, and the controller 22 determines the temperature sensed by the temperature sensing device 211 according to the electric signal collected by the detection end CHK. In some embodiments, the detection circuit 26 converts the temperature sensed by the temperature sensing device 211 into an electrical signal that can be recognized by the controller 22, so as to facilitate signal acquisition by the controller 22.

In some embodiments, the detection circuit 26 includes a detection resistor R601 and a detection power supply terminal 261, the detection resistor R601, the temperature sensing device 211 and the one-way conduction device 241 are connected in series between a detection power supply terminal CHK and a ground terminal GND, the detection resistor R601 is connected in series between the detection power supply terminal 261 and the temperature sensing device 211, the temperature sensing device 211 is connected to the ground terminal GND through the one-way conduction device 241, and the detection terminal CHK is connected between the detection resistor R601 and the temperature sensing device 211. When the food processor circuit 200 normally operates, the unidirectional conducting device 241 is turned on, the detection resistor R601, the temperature sensing device 211 and the unidirectional conducting device 241 divide the voltage of the detection power supply terminal 261, and the detection terminal CHK detects the voltages of the temperature sensing device 211 and the unidirectional conducting device 241. In this embodiment, since the one-way conduction device 241 is the diode D11, when the one-way conduction device 241 is turned on, the voltage drop of the one-way conduction device 241 is a fixed voltage drop (for example, 0.7 v), and the voltage detected by the detection terminal CHK minus the fixed voltage drop of the one-way conduction device 241 is the voltage of the temperature sensing device 211. The resistance of the temperature sensing device 211 may vary with the sensed temperature, and the controller 22 may determine the temperature sensed by the temperature sensing device 211 according to the voltage of the temperature sensing device 211. The temperature sensed by the temperature sensing device 211 can be determined by detecting the divided voltage on the temperature sensing device 211, and the circuit is simple.

In some embodiments, the detection power terminal 261 may be connected to the power supply circuit 23, and the power supply circuit 23 supplies power to the detection circuit terminal 261. In some embodiments, the detection power terminal 261 may also be connected to the power terminal VCC, and the power supply circuit 23 is powered by the power terminal VCC and the detection power terminal 261 through the power supply capacitor C1.

In some embodiments, the detection circuit 26 includes a current limiting resistor R602, one end of the current limiting resistor R602 is connected to the detection terminal CHK, and the other end of the current limiting resistor R602 is connected between the detection resistor R601 and the temperature sensing device 211. The current limiting resistor R602 can limit the current of the detection terminal CHK, and prevent the controller 22 from being burned out due to excessive current.

In some embodiments, the detection circuit 26 includes a filter capacitor C601, one end of the filter capacitor C601 is connected to the detection terminal CHK, and the other end of the filter capacitor C601 is connected to the ground terminal GND. The filter capacitor C601 can filter the electric signal collected by the detection end CHK, and the signal stability is improved.

Fig. 5 is a circuit diagram of another portion of the food processor circuit 200 in fig. 3.

Referring to fig. 1 to 5, in some embodiments, the power supply circuit 23 includes a first sub power supply circuit 232 and a second sub power supply circuit 233, the first sub power supply circuit 232 and the second sub power supply circuit 233 are respectively connected to the power supply circuit 231, the first sub power supply circuit 232 outputs non-isolated power to supply power to the controller 22 through a power supply capacitor C1, and the second power supply circuit 232 outputs isolated power to supply power to other circuits in the processor circuit 200, for example, to supply power to the detection circuit 26.

In some embodiments, the switching circuit 25 includes a first switching circuit 251 and a second switching circuit 252, the first switching circuit 251 being connected between the live line L and the load 120, and the second switching circuit 252 being connected between the neutral line N and the load 120. The first switch circuit 251 and the second switch circuit 252 may be disposed on a control circuit board of the main body 11, the live line L is connected to the load 120 disposed in the cup 123 through the first switch circuit 251 and the coupler, and the neutral line N is connected to the load 120 disposed in the cup 123 through the second switch circuit 252 and the coupler, so that a current loop is formed. The first switch circuit 251 includes a first relay RLY402 connected between the live line L and the load 120, the controller 22 includes a first control terminal KEY1, the first control terminal KEY1 is connected to the first switch circuit 251, and the controller 22 can control the on/off of the first relay RLY402 through the first control terminal KEY 1. The second switch circuit 252 includes a thyristor SCR201 and a second relay RLY401 connected between the neutral line N and the load 120, the controller 22 includes a third control end Triac and a fourth control end RLY, the third control end Triac is connected with the thyristor SCR201, the fourth control end is connected with the second relay RLY401, the controller 22 can control the conduction of the thyristor SCR201 through the third control end Triac, the second relay RLY401 can be controlled through the fourth control end to switch between different loads 120, that is, the load 120 communicated with the neutral line N is controlled, for example, the heating element 121 communicated with the neutral line N is switched to be communicated with the motor and the neutral line N, and after the motor is communicated with the neutral line N, the heating element 121 is disconnected with the neutral line N.

In some embodiments, the first switch circuit 251 may be controlled to be turned off when the controller 22 is reset, such that the circuit line of the load 120 is disconnected from the power line L, and the circuit line of the load 120 is disconnected from the power line N by controlling the second switch circuit 252 (e.g., controlling the SCR201 to be non-conductive, or controlling the second relay RLY401 to switch between different loads 120).

Fig. 6 is a circuit diagram of another portion of the food processor circuit 200 in fig. 3.

Referring to fig. 6, in some embodiments, the food processor circuit 200 includes a zero-crossing detection circuit 270. The zero-cross detection circuit 270 is connected to the live line L and the controller 22, respectively, and the controller 22 may detect an ac zero-cross point through the zero-cross detection circuit 270, and control the power, the rotation speed, and the like of the load 120 according to the detected ac zero-cross point.

In some embodiments, the food processor circuitry 200 includes display circuitry 29. The display circuit 29 includes at least one display sub-circuit 291. Each display subcircuit 291 includes a nixie tube A-G. The numbers 0-9 can be displayed by controlling the on (nixie tube on) or off (nixie tube off) of one or more of the nixie tubes a-G. Each display sub-circuit 201 includes display control terminals S1-S8. Each display control terminal S1-S8 is connected to controller 22 and nixie tubes A-G, respectively. The controller 22 can control the on/off of the nixie tubes A-G corresponding to each of the control terminals S1-S8 through the control terminals S1-S8. The controller 22 can prompt the user by lighting the light and the like by controlling the conduction of the nixie tube of the prompt lamp.

In some embodiments, the food processor circuit 200 includes a function selection circuit 30. The function selection circuit 30 may comprise function selection blocks TK1-TK10, each of which TK1-TK10 may be connected with the controller 22, respectively. The user can select cooking functions (for example, cooking porridge, cooking soup and the like) through the function selecting parts TK1-TK 10. The controller 22 receives cooking function information set by a user through the function selecting part TK1-TK 10. The function selecting parts TK1-TK10 may be keys.

In some embodiments, the food processor circuit 200 includes a voltage detection circuit 271 for detecting the operating voltage of the load 120, so that the controller 22 can determine the power of the load 120 according to the detected operating voltage. The voltage detection circuit 271 is connected to the live line L of the power supply 23 and the controller 22, respectively. The voltage detection circuit 271 includes voltage dividing resistors R301, R302, and R304 connected in series between the power supply 23 and the ground terminal. The controller 22 is connected between the voltage dividing resistor R302 and the voltage dividing resistor R304. The controller 22 may determine the operating voltage of the load 120 by detecting the voltage across the voltage divider resistor R304.

In some embodiments, the food processor circuit 200 includes an alarm circuit 272. The alarm circuit 272 includes an alarm BZ 1. The alarm BZ1 is connected to the controller 22. Controller 22 may control alarm BZ1 to sound an alarm to alert the user.

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 (10)

1. A food processor circuit, comprising:

a detection element (21);

a controller (22) including a power supply terminal, a ground terminal, and a detection terminal;

the power supply circuit (23) is connected with the power supply end and the grounding end and used for supplying power to the controller (22), the power supply circuit (23) comprises a power supply capacitor, and the power supply capacitor is connected between the power supply end and the grounding end;

the protection circuit (24) is connected between the detection end and the grounding end in series with the detection element (21), the protection circuit (24) comprises a first connecting end and a second connecting end, the first connecting end is connected with the detection end, the second connecting end is connected with the grounding end, and when the voltage of the first connecting end is higher than that of the second connecting end, the protection circuit (24) is conducted; when the voltage of the first connection terminal is lower than the voltage of the second connection terminal, the protection circuit (24) is cut off.

2. The food processor circuit according to claim 1, wherein the protection circuit (24) comprises a one-way turn-on device (241), the one-way turn-on device (241) is connected between the first connection terminal and the second connection terminal, the one-way turn-on device (241) is turned on when the voltage of the first connection terminal is higher than the voltage of the second connection terminal, and the one-way turn-on device (241) is turned off when the voltage of the first connection terminal is lower than the voltage of the second connection terminal.

3. The food processor circuit according to claim 2, wherein the one-way conduction device (241) comprises a diode, an anode of the diode is connected to the first connection terminal, and a cathode of the diode is connected to the second connection terminal.

4. The food processor circuit according to claim 2, wherein the detection element (21) comprises a temperature sensing device (211), the food processor circuit comprises a detection circuit (26), the temperature sensing device (211) is connected with the detection end through the detection circuit (26), and the controller (22) determines the temperature sensed by the temperature sensing device (211) according to the electric signal collected by the detection end.

5. The food processor circuit according to claim 4, wherein the detection circuit (26) comprises a detection resistor and a detection power supply terminal (261), the detection resistor, the temperature sensing device (211) and the one-way conduction device (241) are connected in series between the detection power supply terminal (261) and the ground terminal, the detection resistor is connected in series between the detection power supply terminal (261) and the temperature sensing device (211), the temperature sensing device (211) is connected to the ground terminal through the one-way conduction device (241), and the detection terminal is connected between the detection resistor and the temperature sensing device (211).

6. The food processor circuit according to claim 5, wherein the detection circuit (26) comprises a current limiting resistor, one end of the current limiting resistor is connected to the detection terminal, and the other end of the current limiting resistor is connected between the detection resistor and the temperature sensing device (211); and/or

The detection circuit (26) comprises a filter capacitor, one end of the filter capacitor is connected with the detection end, and the other end of the filter capacitor is connected with the grounding end.

7. The food processor circuit according to claim 4, wherein the temperature sensing device (211) comprises a thermistor.

8. The food processor circuit of claim 1, wherein the supply capacitor comprises an electrolytic capacitor.

9. A food processor, comprising:

a host (11);

a cup assembly (12) detachably assembled to the main body (11); and

the food processor circuit of any one of claims 1 to 8.

10. The food processor of claim 9, wherein the controller (22) of the food processor circuit is disposed on the main machine (11), and the detecting element (21) is disposed on the cup assembly (12).

Images