food processor
By incorporating a safety switch within the cup holder in the food processor and utilizing coupler terminals, combined with the cooperation of the cup lid and connecting rod, waterproof control of the heating element is achieved. This solves the problem of poor waterproof performance in food processors, simplifies the structure, reduces costs, and enhances safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG SHAOXING SUPOR DOMESTIC ELECTRICAL APPLIANCE CO LTD
- Filing Date
- 2025-05-20
- Publication Date
- 2026-05-26
AI Technical Summary
The existing food processor coupler terminals are not fully utilized, resulting in poor waterproof performance, and the redundant terminals need to be sealed with adhesive.
A safety switch is installed inside the cup holder. The heating element and mains power are connected through upper and lower couplers. The safety switch is controlled by the coupling terminals of the coupler and the cooperation between the cup lid and the connecting rod, so as to achieve waterproof control of the heating element.
The water resistance of the food processor has been improved, the structure has been simplified, the cost has been reduced, and safety has been enhanced by controlling high voltage with low voltage.
Smart Images
Figure CN224269105U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of small household appliance technology, and in particular to a food processor. Background Technology
[0002] With the continuous improvement of living standards, many different types of food processors have appeared on the market. The functions of food processors can include, but are not limited to, making soy milk, juicing, making rice paste, mincing meat, shaved ice, making coffee and / or preparing face masks.
[0003] A blender typically consists of a blending cup assembly and a main unit. The blending cup assembly and the main unit are connected by a coupler. The coupler is a standard component, and the number of its terminals is often fixed. In the existing connection method, the coupler terminals are not fully utilized, and the redundant terminals need to be sealed with glue, resulting in poor waterproof performance of the blender. Utility Model Content
[0004] This application provides a food processor with high water resistance.
[0005] This application provides a food processor, including:
[0006] A food processor assembly includes a food processor, a cup holder, a heating element, an upper coupler, and a safety switch. The heating element and the cup holder are located at the bottom of the food processor. The safety switch is located inside the cup holder. The upper coupler includes an upper terminal block, which includes an upper live wire terminal, an upper neutral wire terminal, and a mains neutral wire terminal. The heating element is connected between the upper live wire terminal and the upper neutral wire terminal. The safety switch is connected between the upper neutral wire terminal and the mains neutral wire terminal.
[0007] A lid that can be fitted onto the cooking cup assembly; when the lid is fitted onto the cooking cup assembly, the safety switch is closed; when the lid is not fitted onto the cooking cup assembly, the safety switch is open; and
[0008] The main unit includes a lower coupler, the lower coupler including a lower terminal block, the lower terminal block including a lower live wire terminal and a lower neutral wire terminal. The blending cup assembly is detachably assembled to the main unit. When the blending cup assembly is assembled to the main unit, the lower live wire terminal is plugged into the upper live wire terminal, and the lower neutral wire terminal is plugged into the upper neutral wire terminal. The lower live wire terminal is used to connect to the mains live wire, and the lower neutral wire terminal is used to connect to the mains neutral wire.
[0009] In some embodiments, when the lid is closed, the safety switch is closed, and the heating component can start working. When the lid is opened, the safety switch is opened, the heating component is de-energized, and cannot work. This can prevent accidental injury to the user caused by the food processor operating when the lid is open. The safety switch is located inside the cup holder and connects the heating component and the mains power through the upper and lower couplers. This makes full use of the coupler terminals, eliminating the need for waterproofing the redundant terminals of the coupler. The food processor cup assembly does not require drilling, resulting in better waterproofing performance.
[0010] Optionally, the cooking cup assembly includes a connecting rod disposed on the cooking cup, the bottom end of the connecting rod being connected to the safety switch; when the cup lid is closed on the cooking cup assembly, the cup lid presses downward against the top end of the connecting rod, pushing the connecting rod to close the safety switch; when the cup lid is not closed on the cooking cup assembly, the cup lid separates from the top end of the connecting rod, causing the safety switch to open.
[0011] In some embodiments, the safety switch can be easily and conveniently controlled by the combination of the cup lid and the connecting rod, resulting in a simple and low-cost food processor.
[0012] Optionally, the cooking cup includes a cup body and a handle disposed on the cup body, and the connecting rod is disposed inside the handle.
[0013] In some embodiments, the connecting rod is located inside the cup handle, which can make full use of the internal space of the cup handle and save the size of the food processor.
[0014] Optionally, the main unit includes a motor, the lower terminal includes a lower neutral terminal, when the cooking cup assembly is assembled on the main unit, the lower neutral terminal is plugged into the upper neutral terminal, one end of the motor is connected to the lower neutral terminal, and the other end is used to connect to the mains live wire.
[0015] In some embodiments, the motor is connected to the mains neutral wire via a lower neutral wire terminal and an upper neutral wire terminal. The motor and heating assembly share the upper neutral wire terminal, saving on coupler terminals and reducing the cost of the food processor.
[0016] Optionally, the host includes a load switching circuit, which is connected to the mains live wire, the lower live wire terminal, and the motor, and includes a first state and a second state. When the load switching circuit is in the first state, the load switching circuit connects the mains live wire and the lower live wire terminal; when the load switching circuit is in the second state, the load switching circuit connects the mains live wire and the motor.
[0017] In some embodiments, a load switching circuit can be used to conveniently control the connection of the heating component or motor to the mains power, facilitate switching the operation of the heating component and motor, and the circuit is simple and saves on components.
[0018] Optionally, the load switching circuit includes a relay, which includes a moving contact, a first stationary contact, and a second stationary contact. The moving contact is connected to the mains live wire, the first stationary contact is connected to the downstream live wire terminal, and the second stationary contact is connected to the motor. When the load switching circuit is in the first state, the moving contact is connected to the first stationary contact; when the load switching circuit is in the second state, the moving contact is connected to the second stationary contact.
[0019] In some embodiments, the relay can control the on / off of circuits with larger current and voltage using a smaller current and voltage control signal, thereby enabling weak current to control strong current and improving the safety of the food processor.
[0020] Optionally, the host includes a drive circuit connected to the mains power line and the load switching circuit, used to drive the motor and the heating component.
[0021] In some embodiments, the motor and heating components are driven by the same drive circuit, which can reduce the number of circuit components, simplify circuit connections, and save costs.
[0022] Optionally, the blending cup assembly includes a temperature sensor; the upper terminal includes an upper positive temperature terminal and an upper negative temperature terminal, and the temperature sensor is connected to the upper positive temperature terminal and the upper negative temperature terminal; the lower terminal includes a lower positive temperature terminal and a lower negative temperature terminal; when the blending cup assembly is assembled with the main unit, the lower positive temperature terminal is plugged into the upper positive temperature terminal, and the lower negative temperature terminal is plugged into the upper negative temperature terminal; the main unit also includes a temperature detection circuit connected to the lower positive temperature terminal and the lower negative temperature terminal, used to determine the temperature inside the blending cup based on the electrical signal from the temperature sensor.
[0023] In some embodiments, a temperature sensor can detect the temperature inside the blending cup, and a temperature detection circuit can determine the temperature inside the blending cup, so that the blender can control its operation based on the temperature of the ingredients inside the blending cup.
[0024] Optionally, the host also includes a controller and a zero-crossing detection circuit. The controller includes a zero-crossing detection port, and the zero-crossing detection circuit is connected to the zero-crossing detection port and the neutral terminal of the mains power supply. The controller determines whether the safety switch is closed by the electrical signal of the zero-crossing detection circuit.
[0025] In some embodiments, a zero-crossing detection circuit is used to detect whether the safety switch is closed. The circuit is simple and can reduce the cost of the food processor.
[0026] Optionally, the host also includes a controller and an AC power detection circuit. The controller includes an AC power detection port, and the AC power detection circuit connects the AC power detection port and the lower live wire terminal. The controller detects the AC power voltage through the AC power detection circuit.
[0027] In some embodiments, detecting the mains voltage can prevent damage to the food processor from mains power failures, thereby improving the safety of the food processor.
[0028] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description
[0029] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.
[0030] Figure 1 The diagram shown is a structural schematic of one embodiment of the food processor of this application.
[0031] Figure 2 As shown Figure 1 The circuit diagram shown is part of the food processor's circuit.
[0032] Figure 3 As shown Figure 1 The circuit diagram shown is part of the food processor's circuit.
[0033] Figure 4 As shown Figure 1 The circuit diagram shown is part of the food processor's circuit.
[0034] Figure 5 As shown Figure 1 The circuit diagram shown is part of the food processor's circuit.
[0035] Figure 6 As shown Figure 1 The circuit diagram shown is part of the food processor's circuit.
[0036] Figure 7 As shown Figure 5 The circuit diagram shown is an embodiment of the temperature detection circuit. Detailed Implementation
[0037] This application provides a food processor. The food processor of this application will be described in detail below with reference to the accompanying drawings. Unless otherwise specified, the features of the following embodiments and implementations can be combined with each other.
[0038] Figure 1 The diagram shown is a structural schematic of one embodiment of the food processor 10 of this application. Figure 1As shown, the food processor 10 includes: a food processor cup assembly 20, a cup lid 30, and a main unit 40.
[0039] The main unit 40 drives and controls the food processor 10 and can interact with the user. The food processor cup assembly 20 is assembled onto the main unit 40 and is used to hold ingredients. The food processor cup assembly 20 includes a food processor cup 21 and a cup base 22. The cup base 22 is located at the bottom of the food processor cup 21. The food processor cup 21 is positioned on top of the cup base 22. Food can be blended, heated, preserved, and vacuum-sealed within the food processor cup 21. The food processor cup assembly 20 is detachably assembled onto the main unit 40, making it more convenient for the user.
[0040] The blending cup assembly 20 also includes a heating element 23. The heating element 23 is located at the bottom of the blending cup 21. The electrical energy provided by the main unit 40 can generate heat in the heating element 23, thereby heating the food. The heating element 23 may include a heating plate with a heating element or an electromagnetic heating plate, etc. The heating plate can precisely control the temperature and ensure that the food is heated evenly, thus improving the blending performance of the blender.
[0041] The blending cup assembly 20 also includes a safety switch 25. The safety switch 25 is located within the cup base 22. This designation saves space in the blender 10. The blending cup assembly 20 eliminates the need for drilling, thus improving its waterproof performance.
[0042] The lid 30 can be fitted onto the food processor 20 and can be used to prevent food from splashing out and causing injury to the user during food preparation. Specifically, when the food processor 10 is working, the lid 30 is fitted onto the food processor 21. After the food processor 10 finishes working, the lid 30 can be removed from the food processor 21. In some embodiments, the lid 30 can be opened to add ingredients during food preparation. In some embodiments, the lid 30 can be screwed onto the food processor 21, and when it is in place, the lid 30 fits onto the food processor 21. In other embodiments, the lid 30 can be closed from top to bottom, and then the lid 30 fits onto the food processor 21. In some embodiments, the lid 30 is detachably assembled to the food processor 21 and can be separated from the food processor 21. In other embodiments, the lid 30 is hinged to the food processor 21.
[0043] When the lid 30 is closed on the blender cup assembly 20, the safety switch 25 is closed; when the lid 30 is not closed on the blender cup assembly 20, the safety switch 25 is open. The safety switch 25 can be used to control whether the blender 10 is working. When the lid 30 is closed on the blender cup assembly 20, the lid 30 closes the safety switch 25, and the blender 10 can start working; when the lid 30 is open, the lid 30 opens the safety switch 25, and the blender 10 stops working. The blender 10 can detect whether the lid 30 is closed on the blender cup assembly 20 by detecting the closed and open state of the safety switch 25.
[0044] Figure 2 As shown Figure 1 The circuit diagram of the food processor 10 shown is partially illustrated.
[0045] refer to Figure 1 and Figure 2 The cooking cup assembly 20 includes an upper coupler 24. In some embodiments, the upper coupler 24 is disposed within the cup holder 22. The upper coupler 24 includes upper terminals, which include an upper live wire terminal T1, an upper neutral wire terminal T2, and a mains neutral wire terminal T3. The heating assembly 23 is connected between the upper live wire terminal T1 and the upper neutral wire terminal T2. The safety switch 25 is connected between the upper neutral wire terminal T2 and the mains neutral wire terminal T3.
[0046] The main unit 40 includes a lower coupler 41, which includes a lower terminal block. The lower terminal block includes a lower live wire terminal W1 and a lower neutral wire terminal W2. When the cooking cup assembly 20 is assembled into the main unit 40, the lower live wire terminal W1 is plugged into the upper live wire terminal T1, and the lower neutral wire terminal W2 is plugged into the upper neutral wire terminal T3. The lower live wire terminal W1 is used to connect to the mains live wire, and the lower neutral wire terminal W2 is used to connect to the mains neutral wire.
[0047] When the blending cup assembly 20 is assembled onto the main unit 40 and the lid 30 is closed on the blending cup assembly 20, the safety switch 25 is closed, connecting the upper neutral wire terminal T2 and the mains neutral wire terminal T3. The mains live wire is connected to the heating element 23 through the lower live wire terminal W1 and the upper live wire terminal T1, and the mains neutral wire is connected to the heating element 23 through the lower mains neutral wire terminal W2, the mains neutral wire terminal T3, and the upper neutral wire terminal T2. The mains live wire and the mains neutral wire provide power to the heating element 23, allowing the heating element 23 to start working. When the lid 30 is not closed on the blending cup assembly 20, the safety switch 25 is open, the upper neutral wire terminal T2 and the mains neutral wire terminal T3 are disconnected, and the mains live wire and the mains neutral wire are disconnected from the heating element 23, de-energizing the heating element 23 and stopping its operation. Thus, when the lid 30 is not closed on the blending cup assembly 20, the blender 10 cannot work, preventing accidental injury to the user (e.g., spillage of food from the blending cup 21). When the blender 10 detects that the lid 30 is open, the blender 10 stops working; when the blender 10 detects that the lid 30 is closed on the blending cup assembly 20, it can start working. The safety switch 25 is located inside the cup base 22 and is connected to the heating element 23 and the mains power through the upper coupler 24 and the lower coupler 41. This makes full use of the coupler terminals, eliminating the need for waterproofing the redundant terminals of the coupler. The blending cup assembly 20 does not require drilling, resulting in better waterproofing performance.
[0048] The cooking cup assembly 20 includes a connecting rod 26 disposed on the cooking cup 21, the bottom end of which is connected to a safety switch 25. When the lid 30 is closed on the cooking cup assembly 20, that is, when the lid 30 is closed on the cooking cup 21, the lid 30 presses downward against the top end of the connecting rod 26, pushing the connecting rod 26 to close the safety switch 25; when the lid 30 is not closed on the cooking cup assembly 20, the lid 30 separates from the top end of the connecting rod 26, causing the safety switch 25 to open.
[0049] The connecting rod 26 is movable. When the lid 30 is closed on the blending cup assembly 20, the lid 30 connects to the top of the connecting rod 26 and pushes the connecting rod 26 downward, causing the connecting rod 26 to push the safety switch 25 to close. When the lid 30 is opened, the lid 30 leaves the top of the connecting rod 26, the connecting rod 26 loses the pushing force of the lid 30, the connecting rod 26 returns to its original position, and the bottom of the connecting rod 26 moves upward, leaving the safety switch 25, thus disengaging the safety switch 25. In some embodiments, the tops of the lid 30 and the connecting rod 26 each include a mating portion. When the lid 30 is closed on the blending cup assembly 20, the mating portions engage, allowing the lid 30 to be fixed to the top of the connecting rod 26. This prevents the lid 30 from detaching from the blending cup assembly 20 during operation, improving the safety of the blender 10.
[0050] In some embodiments, the safety switch 25 can be easily and conveniently controlled by the cooperation of the cup lid 30 and the connecting rod 26. The food processor 10 has a simple structure and low cost.
[0051] The blending cup 21 includes a cup body 211 and a cup handle 212 disposed on the cup body 211. A connecting rod 26 is disposed inside the cup handle 212. The cup handle 212 is used by the user to move the blending cup 21. By placing the connecting rod 26 inside the cup handle 212, the space of the cup handle 212 can be fully utilized, saving the volume of the blender 10.
[0052] Figure 3 As shown Figure 1 The circuit diagram of the food processor 10 shown is partially illustrated.
[0053] The host 40 also includes a controller MCU and a zero-crossing detection circuit 42. The controller MCU includes a zero-crossing detection port COM_L. The zero-crossing detection circuit 42 is connected to the zero-crossing detection port COM_L and the neutral terminal W2 of the mains power. The controller MCU determines whether the safety switch 25 is closed through the electrical signal of the zero-crossing detection circuit 42.
[0054] In some embodiments, the main unit 40 includes a circuit board, on which the controller MCU is mounted. When the safety switch 25 is closed, the upper neutral terminal T2 and the mains neutral terminal T3 are connected, and the mains neutral terminal T3 and the lower mains neutral terminal W2 are connected, thus connecting the safety switch 25 to the mains power. The zero-crossing detection circuit 42 can detect the zero-crossing point of the mains power. The zero-crossing detection circuit 42 can detect the zero-crossing point of the mains power through the electrical signal of the lower mains neutral terminal W2. Detecting whether the safety switch 25 is closed via the zero-crossing detection circuit 42 is a simple circuit that can reduce the cost of the food processor 10.
[0055] Figure 4 As shown Figure 1 The circuit diagram of the food processor 10 shown is partially illustrated.
[0056] The host 40 also includes an AC power detection circuit 43, and the controller MCU includes an AC power detection port LL2. The AC power detection circuit 43 is connected to the AC power detection port LL2 and the lower power terminal W1. The controller MCU detects the AC power voltage through the AC power detection circuit 43.
[0057] The mains power detection circuit 43 includes voltage divider resistors R301 and R302. R301 and R302 are connected in series between the lower power terminal W1 and the mains power detection port LL2. The lower power terminal W1 is connected to the mains power, thus connecting the mains power detection port LL2 to the mains power. The resistance values of R301 and R302 remain constant; when the mains power voltage changes, the voltage across R301 and R302 changes accordingly. The controller MCU determines the mains power voltage by detecting the voltage across R301 and R302. The controller MCU compares the determined mains power voltage with the normal range. If the mains power voltage is within the normal range, the mains power is normal, and the food processor 10 can start working. If the mains power is outside the normal range, it indicates a possible mains power failure, and the controller MCU can prevent the food processor 10 from working. For example, the controller MCU can be connected to the safety switch 25. When the mains power is detected to be outside the safe range, the controller MCU controls the safety switch 25 to disconnect, preventing the heating element 23 from receiving power and the food processor 10 from operating. This improves the safety of the food processor 10 and prevents it from connecting to the mains power during a power outage, thus avoiding potential safety hazards. In some embodiments, detecting the mains voltage can prevent damage to the food processor 10 from a power outage, further enhancing its safety.
[0058] Figure 5 As shown Figure 1 The circuit diagram of the food processor 10 shown is partially illustrated.
[0059] The main unit 40 includes a motor 44, and the lower terminal includes a lower neutral terminal W3. When the food preparation cup assembly 20 is assembled on the main unit 40, the lower neutral terminal W3 is plugged into the upper neutral terminal T2. One end of the motor 44 is connected to the lower neutral terminal W3, and the other end is used to connect to the mains live wire.
[0060] When the blending cup assembly 20 is assembled onto the main unit 40, the lower neutral terminal W3 is plugged into the upper neutral terminal T2. When the cup lid 30 is closed on the blending cup assembly 20, the safety switch 25 is closed, and the upper neutral terminal T2 is connected to the mains neutral terminal T3. One end of the motor 44 is connected to the mains neutral wire through the lower neutral terminal W3 and the upper neutral terminal T2, and the other end of the motor 44 is connected to the mains live wire, thus connecting the motor 44 to the mains power. The heating assembly 23 is connected to the mains power through the upper live wire terminal T1 and the upper neutral terminal T2. The motor 44 and the heating assembly 23 share the upper neutral terminal T2, saving on coupler terminals and reducing the cost of the blender 10.
[0061] The host 40 includes a load switching circuit 45, which connects the mains live wire, the lower live wire terminal W1 and the motor 44, and includes a first state and a second state. When the load switching circuit 45 is in the first state, the load switching circuit 45 connects the mains live wire and the lower live wire terminal W1; when the load switching circuit 45 is in the second state, the load switching circuit 45 connects the mains live wire and the motor 44.
[0062] The load switching circuit 45 can switch the connection between the motor 44 and the heating element 23 and the mains power line. When the load switching circuit 45 is in the first state, it connects the mains power line and the lower power line terminal W1. The lower power line terminal W1 is connected to the upper power line terminal T1, and the upper power line terminal T1 is connected to the heating element 23, thus connecting the heating element 23 to the mains power and allowing it to start working. At this time, the motor 44 is disconnected from the mains power line and cannot work. When the load switching circuit 45 is in the second state, it connects the mains power line and the motor 44, allowing the motor 44 to start working. At this time, the mains power line is disconnected from the lower power line terminal W1, and the heating element 23 is disconnected from the mains power line, preventing it from working.
[0063] In some embodiments, the load switching circuit 45 can be used to conveniently control the connection of the heating element 23 or the motor 44 to the mains power, facilitating the switching of the operation of the heating element 23 and the motor 44. The circuit is simple and saves on components. It also ensures that the heating element 23 and the motor 44 do not operate simultaneously, preventing the food processor 10 from simultaneously heating and blending ingredients, thus improving the safety of the food processor 10.
[0064] Figure 6 As shown Figure 1 The circuit diagram of the food processor 10 shown is partially illustrated.
[0065] The load switching circuit 45 includes a relay RLY401, which includes a moving contact A3, a first stationary contact A1, and a second stationary contact A2. The moving contact A3 is connected to the mains live wire, the first stationary contact A1 is connected to the downstream live wire terminal W1, and the second stationary contact A2 is connected to the motor 44. When the load switching circuit 45 is in the first state, the moving contact A3 is connected to the first stationary contact A1; when the load switching circuit 45 is in the second state, the moving contact A3 is connected to the second stationary contact A2.
[0066] Relay RLY401 is used to switch the connection between heating component 23 and motor 44 and the mains power. The controller MCU includes an RLY port, connected to relay RLY401, for controlling the operation of relay RLY401. When heating component 23 needs to be energized, the controller MCU controls the moving contact A3 to connect to the first stationary contact A1 via the RLY port, putting the load switching circuit 45 in its first state, connecting the lower live wire terminal W1 to the mains live wire, thus connecting heating component 23 to the mains power. When motor 44 needs to be energized, the controller MCU controls the moving contact A3 to connect to the second stationary contact A2 via the RLY port, putting the load switching circuit 45 in its second state, connecting motor 44 to the mains live wire, thus connecting motor 44 to the mains power.
[0067] In some embodiments, the relay RLY401 can control the on / off of circuits with larger current and voltage using a smaller current and voltage control signal, thereby enabling weak current to control strong current and improving the safety of the food processor 10.
[0068] The main unit 40 includes a drive circuit 46, which is connected to the mains power line and a load switching circuit 45, for driving the motor 44 and the heating component 23.
[0069] When the load switching circuit 45 is in the first state, the heating component 23 is connected to the mains power, and the drive circuit 46 drives the heating component 23 to operate. When the load switching circuit 45 is in the second state, the motor 44 is connected to the mains power, and the drive circuit 46 drives the motor 44 to operate. The controller MCU includes a Triac port, which is connected to the drive circuit 46 and is used to control the drive circuit 46 to drive the heating component 23 or the motor 44. For example, the speed of the motor 44 and the heating temperature of the heating component 23 can be controlled. In some embodiments, the drive circuit 46 may include a silicon controlled rectifier (SCR) 201. The SCR 201 includes a control terminal G, a first terminal X1, and a second terminal X2. The control terminal G is connected to the Triac port and is used to receive drive control signals from the controller MCU. The first terminal X1 is connected to the mains power wire, and the second terminal X2 is connected to the load switching circuit 45. The controller MCU can control the on / off state of the SCR201. When the SCR201 is on, the load switching circuit 45 is connected to the mains power line through the SCR201, so that the motor 44 or the heating component 23 is connected to the mains power line through the load switching circuit 45 and the SCR201.
[0070] The load switching circuit 45 is controlled by the controller MCU to switch the drive circuit 46 between the motor 44 and the heating component 23, thereby realizing time-sharing control of the motor 44 and the heating component 23. The motor 44 and the heating component 23 are driven by the same drive circuit 46, which can reduce the number of circuit components, simplify the circuit connection, and save costs.
[0071] The drive circuit 46 also includes a transistor Q201, which connects the SCR201 and the Triac port. The controller MCU controls the SCR201 through the transistor Q201.
[0072] refer to Figure 5 The blending cup assembly 20 includes a temperature sensor 27. The upper terminals include an upper positive temperature terminal T5 and an upper negative temperature terminal T6, with the temperature sensor 27 connected to both terminals. The lower terminals include a lower positive temperature terminal W5 and a lower negative temperature terminal W6. When the blending cup assembly 20 is assembled into the main unit 40, the lower positive temperature terminal W5 is plugged into the upper positive temperature terminal T5, and the lower negative temperature terminal W6 is plugged into the upper negative temperature terminal T6. The main unit 40 also includes a temperature detection circuit 47, connected to the lower positive temperature terminal W5 and the lower negative temperature terminal W6, used to determine the temperature inside the blending cup 21 based on the electrical signal from the temperature sensor 27.
[0073] Temperature sensor 27 is used to detect the temperature inside the blending cup 21. Temperature sensor 27 can be located at the bottom of the blending cup 21. When the temperature inside the blending cup 21 changes, the electrical signal of temperature sensor 27 changes accordingly. Temperature sensor 27 includes a thermistor; when the temperature inside the blending cup 21 changes, the resistance of the thermistor changes accordingly, and the voltage or current signal of the thermistor changes accordingly. When the blending cup assembly 20 is assembled with the main unit 40, temperature detection circuit 47 is connected to temperature sensor 27. Temperature detection circuit 47 can acquire the electrical signal of temperature sensor 27 and determine the temperature inside the blending cup 21 based on this electrical signal. For example, temperature detection circuit 47 can calculate the resistance value of temperature sensor 27 corresponding to the voltage signal of temperature sensor 27, and then calculate the temperature value corresponding to the resistance value, thereby determining the temperature inside the blending cup 21.
[0074] In some embodiments, the temperature sensor 27 can detect the temperature inside the blending cup 21, and the temperature detection circuit 47 can determine the temperature inside the blending cup 21, so that the blender 10 can control its operation according to the temperature of the food inside the blending cup 21. For example, heating the food can be stopped after the food temperature reaches a threshold; if the food temperature has not reached the temperature threshold, the heating power can be increased.
[0075] Figure 7 As shown Figure 5 The circuit diagram shows one embodiment of the temperature detection circuit 47.
[0076] The controller MCU includes a TEMP port, which is connected to the lower temperature positive terminal W5 and the lower temperature negative terminal W6, for receiving electrical signals from the temperature sensor 27. The temperature detection circuit 47 also includes a diode D601, with the anode of diode D601 connected to the lower temperature negative terminal W6 and the cathode of diode D601 connected to the lower temperature positive terminal W5.
[0077] Diode D601 includes a TVS (Transient Voltage Suppressor). Diode D601 has unidirectional conductivity. When a fault such as a short circuit occurs in temperature sensor 27 and a high voltage is generated, diode D601 conducts, absorbing the instantaneous high voltage and preventing damage to other components in the circuit. Diode D601 can suppress the high voltage caused by a fault in temperature sensor 27, improving circuit safety.
Claims
1. A food processor, characterized in that, include: A food processor assembly includes a food processor, a cup holder, a heating element, an upper coupler, and a safety switch. The heating element and the cup holder are located at the bottom of the food processor. The safety switch is located inside the cup holder. The upper coupler includes an upper terminal block, which includes an upper live wire terminal, an upper neutral wire terminal, and a mains neutral wire terminal. The heating element is connected between the upper live wire terminal and the upper neutral wire terminal. The safety switch is connected between the upper neutral wire terminal and the mains neutral wire terminal. The cup lid can be closed onto the cooking cup assembly; when the cup lid is closed onto the cooking cup assembly, the safety switch is closed; when the cup lid is not closed onto the cooking cup assembly, the safety switch is open. and The main unit includes a lower coupler, the lower coupler including a lower terminal block, the lower terminal block including a lower live wire terminal and a lower neutral wire terminal. The blending cup assembly is detachably assembled to the main unit. When the blending cup assembly is assembled to the main unit, the lower live wire terminal is plugged into the upper live wire terminal, and the lower neutral wire terminal is plugged into the upper neutral wire terminal. The lower live wire terminal is used to connect to the mains live wire, and the lower neutral wire terminal is used to connect to the mains neutral wire.
2. The food processor according to claim 1, characterized in that, The cooking cup assembly includes a connecting rod disposed on the cooking cup, the bottom end of the connecting rod being connected to the safety switch; when the cup lid is closed on the cooking cup assembly, the cup lid presses downward against the top end of the connecting rod, pushing the connecting rod to close the safety switch; when the cup lid is not closed on the cooking cup assembly, the cup lid separates from the top end of the connecting rod, causing the safety switch to open.
3. The food processor according to claim 2, characterized in that, The cooking cup includes a cup body and a handle disposed on the cup body, and the connecting rod is disposed inside the handle.
4. The food processor according to claim 1, characterized in that, The main unit includes a motor, and the lower terminal includes a lower neutral terminal. When the cooking cup assembly is assembled on the main unit, the lower neutral terminal is plugged into the upper neutral terminal. One end of the motor is connected to the lower neutral terminal, and the other end is used to connect to the mains live wire.
5. The food processor according to claim 4, characterized in that, The host includes a load switching circuit, which connects the mains power line, the lower power line terminal, and the motor. The load switching circuit includes a first state and a second state. When the load switching circuit is in the first state, it connects the mains power line and the lower power line terminal. When the load switching circuit is in the second state, it connects the mains power line and the motor.
6. The food processor according to claim 5, characterized in that, The load switching circuit includes a relay, which includes a moving contact, a first stationary contact, and a second stationary contact. The moving contact is connected to the mains live wire, the first stationary contact is connected to the downstream live wire terminal, and the second stationary contact is connected to the motor. When the load switching circuit is in the first state, the moving contact is connected to the first stationary contact; when the load switching circuit is in the second state, the moving contact is connected to the second stationary contact.
7. The food processor according to claim 5, characterized in that, The host includes a drive circuit connected to the mains power line and the load switching circuit, used to drive the motor and the heating component.
8. The food processor according to claim 1, characterized in that, The blending cup assembly includes a temperature sensor. The upper terminal includes an upper positive temperature terminal and an upper negative temperature terminal, and the temperature sensor is connected to the upper positive temperature terminal and the upper negative temperature terminal. The lower terminal includes a lower positive temperature terminal and a lower negative temperature terminal. When the blending cup assembly is assembled with the main unit, the lower positive temperature terminal is plugged into the upper positive temperature terminal, and the lower negative temperature terminal is plugged into the upper negative temperature terminal. The main unit also includes a temperature detection circuit connected to the lower positive temperature terminal and the lower negative temperature terminal, used to determine the temperature inside the blending cup based on the electrical signal from the temperature sensor.
9. The food processor according to claim 1, characterized in that, The host also includes a controller and a zero-crossing detection circuit. The controller includes a zero-crossing detection port. The zero-crossing detection circuit is connected to the zero-crossing detection port and the neutral wire terminal of the mains power supply. The controller determines whether the safety switch is closed by the electrical signal of the zero-crossing detection circuit.
10. The food processor according to claim 1, characterized in that, The host also includes a controller and an AC power detection circuit. The controller includes an AC power detection port, and the AC power detection circuit connects the AC power detection port and the lower live wire terminal. The controller detects the AC power voltage through the AC power detection circuit.