Food processor

Abstract

The present disclosure relates to the technical field of food processing, and particularly relates to a food processor, which comprises a main machine, a cup body, a power board and a display board, the cup body is internally provided with a crushing knife driven by a brushless motor; the power board comprises a power supply circuit, an EMC circuit, a main circuit and a main control MCU, the power supply circuit comprises a live wire and a neutral wire, the power supply circuit is connected with the EMC circuit, the main control MCU is connected with the EMC circuit and the main circuit; wherein, the main circuit comprises a rectification filtering circuit and a brushless motor inverter circuit, the brushless motor inverter circuit is located downstream of the rectification filtering circuit and is electrically connected with the rectification filtering circuit; further comprising an energy consumption control circuit arranged between the EMC circuit and the main circuit, the energy consumption control circuit is used for controlling the connection state of the main circuit with the live wire or the neutral wire in the standby state; the main control MCU is connected with the energy consumption control circuit to control the work of the energy consumption control circuit. In this way, the standby power consumption of the food processor is effectively reduced.

Description

Technical Field

[0001] This disclosure relates to the field of food processing technology, and in particular to a food processing machine. Background Technology

[0002] With increasing societal awareness of energy conservation and environmental protection, consumers are placing higher demands on the energy efficiency of household appliances, especially commonly used appliances like food processors. Traditional food processors, while seemingly inactive in standby mode, continue to consume power through their internal power modules, control circuits, drive circuits, display modules, and various sensors; the accumulated standby power consumption is not negligible. This not only wastes energy but also contradicts the global trend towards green and environmentally friendly practices.

[0003] In the existing technology, various solutions have been proposed by the industry to reduce the standby power consumption of food processing machines. For example, some solutions attempt to improve efficiency by optimizing the design of the power supply module or introducing low-power modes in the control circuit. However, these methods often only reduce power consumption to a certain extent and are difficult to achieve true "zero standby" or ultra-low standby power consumption.

[0004] Some existing food processors attempt to achieve energy savings through strategies in their control circuits. For example, in a standby low-power food processor provided by CN206453709U, the operating state of the sampling circuit is controlled by a low-power sampling control circuit in standby mode, cutting off the power supply to the sampling circuit to reduce sampling energy consumption. When in standby mode, the central processing unit (MCU) sends a signal to the signal acquisition module, instructing it to operate in a low-power mode.

[0005] However, the aforementioned existing technologies still have certain limitations in achieving extremely low power consumption in food processors. For example, power outages are not complete. The solutions mainly focus on power management of specific local circuits or modules, failing to fundamentally and completely physically power off the main high-power circuits, making it difficult to reduce standby power consumption to extremely low levels. For instance, although power consumption control is implemented for sampling circuits and signal acquisition modules, high-power circuits such as rectifier filters and motor inverters may still consume a small amount of power in standby mode. Over long periods of standby, significant power consumption can accumulate. Moreover, the components in these circuits are still subjected to voltage or current stress in standby mode, which may lead to reduced lifespan or even safety hazards such as fires.

[0006] Therefore, there is an urgent need for a new power management solution for food processors that can more thoroughly, safely, and reliably reduce standby power consumption to meet increasingly stringent energy efficiency standards and ever-growing user demands. Utility Model Content

[0007] This disclosure provides a food processing machine to solve the problem that high-power circuits such as rectifier filters and motor inverters in food processing machines still accumulate large power consumption in long-term standby states, which is not conducive to further reducing the overall standby power consumption. It also addresses the problem that in long-term standby states, the relevant components of rectifier filters and motor inverters are still subjected to voltage or current stress, which may lead to a reduction in lifespan and potential safety hazards such as fires caused by short circuits or leakage.

[0008] This disclosure provides a food processing machine, including a main unit, a cup body, a power board, and a display board. The cup body is equipped with a pulverizing blade driven by a brushless motor. The power board includes a power supply circuit, an EMC circuit, a main circuit, and a main control MCU. The power supply circuit includes a live wire and a neutral wire and is connected to the EMC circuit. The main control MCU is connected to both the EMC circuit and the main circuit. The main circuit includes a rectifier and filter circuit and a brushless motor inverter circuit. The brushless motor inverter circuit is located downstream of the rectifier and filter circuit and is electrically connected to it.

[0009] It also includes an energy consumption control circuit located between the EMC circuit and the main circuit. The energy consumption control circuit is used to control the connection status between the main circuit and the live wire or neutral wire in standby mode. The main control MCU is connected to the energy consumption control circuit to control the operation of the energy consumption control circuit.

[0010] Optionally, the energy consumption control circuit includes a controllable switch connected in series with the live wire or the neutral wire.

[0011] Optionally, the controllable switch is an electromagnetic relay, with one contact of the electromagnetic relay connected to the EMC circuit and the other contact connected to the main circuit.

[0012] Optionally, the energy consumption control circuit is located upstream of the rectifier and filter circuit to disconnect the rectifier and filter circuit and the brushless motor inverter circuit from the live wire or neutral wire in standby mode.

[0013] Optionally, one of the positive and negative input terminals of the rectifier filter circuit is connected to the energy consumption control circuit, and the other is connected to the EMC circuit.

[0014] Optionally, the power board also includes a zero-crossing detection circuit. The zero-crossing detection circuit is located between the EMC circuit and the power consumption control circuit and is electrically connected to the main control MCU. The zero-crossing detection circuit is used to perform zero-crossing detection and output a zero-crossing detection signal based on the detection result. The main control MCU is used to transmit control signals to the power consumption control circuit based on the zero-crossing detection signal to control the controllable switch to turn on or off.

[0015] Optionally, it also includes a switching power supply circuit, which is connected to the neutral and live wires upstream of the power consumption control circuit. The switching power supply circuit is used to provide low-voltage power to the main circuit, the main control MCU and the display board.

[0016] Optionally, the display board includes a display board MCU, which is connected to the main control MCU to control the main control MCU to go into sleep mode in standby mode.

[0017] Optionally, the display panel also includes a display module, and the display panel MCU is connected to the display module to reduce the brightness of the display module in standby mode.

[0018] Optionally, the display panel also includes a temperature detection circuit, and the display panel MCU is connected to the temperature detection circuit to control the temperature detection circuit to go into sleep mode in standby mode.

[0019] The technical solution provided in this disclosure has the following advantages compared with the prior art:

[0020] 1. By completely physically cutting off the main circuit through the energy consumption control circuit, all power consumption of high-power modules such as the rectifier filter circuit and the brushless motor inverter circuit in standby mode is eliminated, reducing the standby power consumption of the whole machine to a level close to zero.

[0021] 2. The main circuit is completely de-energized during standby, avoiding stress fatigue and aging caused by prolonged energization or low current in high-voltage, high-current components in the main circuit (such as the rectifier filter circuit and brushless motor inverter circuit), thus extending their overall service life. Ensuring these high-voltage components are in a safe de-energized state further enhances the product's standby safety. Physically cutting off the main circuit's power supply also reduces safety hazards such as fires caused by internal short circuits or leakage during standby.

[0022] 3. By combining strategies such as main control MCU sleep mode, display module brightness reduction, and temperature detection circuit sleep mode, comprehensive, refined, and multi-level power consumption management of each functional module inside the system is achieved, optimizing the total standby power consumption to the extreme.

[0023] 4. Through the coordinated control of the zero-crossing detection circuit and the main control MCU, the electromagnetic relay is enabled to conduct or disconnect at the zero-crossing point of the AC voltage, completely eliminating the arc and sparks generated during switching action. This fundamentally prevents contact erosion and welding, greatly reducing safety hazards such as fires. Moreover, zero-crossing switching effectively reduces the wear of the electromagnetic relay contacts, significantly extending their electrical and mechanical lifespan and reducing the maintenance rate caused by relay failures.

[0024] 5. Although the main circuit is powered off in standby mode, the switching power supply circuit provides low-voltage power to the main control MCU and display board, ensuring that the system can quickly respond to the user's wake-up command (such as button operation), avoiding a long startup process and improving the user experience. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0026] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 The diagram shown is a structural schematic of a food processing machine provided in an embodiment of this disclosure;

[0028] Figure 2 The diagram shown is another structural schematic of the food processing machine provided in this embodiment of the present disclosure;

[0029] Figure 3 The diagram shown is a schematic diagram of a controllable switch in an energy management circuit provided in this embodiment of the present disclosure;

[0030] Figure 4 The diagram shown is another structural schematic of the food processing machine provided in this embodiment of the present disclosure;

[0031] Figure 5 The diagram shown is another structural schematic of the food processing machine provided in this embodiment of the present disclosure;

[0032] Figure 6 The diagram shown is a circuit diagram of a food processing machine provided in an embodiment of this disclosure. Detailed Implementation

[0033] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0034] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of this disclosure.

[0035] Figure 1 The diagram shown is a structural schematic of a food processing machine provided in an embodiment of this disclosure. Figure 2 The diagram shown is another structural schematic of the food processing machine provided in this embodiment; please refer to... Figure 1 and Figure 2This disclosure provides a food processing machine comprising a main unit, a cup body, a power board 01, and a display board 02. The cup body contains a pulverizing blade driven by a brushless motor. The power board 01 includes a power supply circuit 03, an EMC circuit 100, a main circuit 00, and a main control MCU 900. The power supply circuit 03 includes a live wire N1 and a neutral wire L1, and is connected to the EMC circuit 100. The main control MCU 900 is connected to both the EMC circuit 100 and the main circuit 00. The main circuit 00 includes a rectifier and filter circuit 700 and a brushless motor inverter circuit 800. The brushless motor inverter circuit 800 is located downstream of and electrically connected to the rectifier and filter circuit 700.

[0036] The power board 01 also includes an energy consumption control circuit 400 disposed between the EMC circuit 100 and the main circuit 00. The energy consumption control circuit 400 is used to control the connection status of the main circuit 00 with the live wire N1 or the neutral wire L1 in the standby state. The main control MCU 900 is connected to the energy consumption control circuit 400 to control the operation of the energy consumption control circuit 400.

[0037] In the food processing machine provided in this embodiment, the power supply circuit 03 of the power board 01 is used to provide mains power input for the live wire N1 and the neutral wire L1; the EMC circuit 100 is located at the front end, which suppresses high-frequency noise in the power supply and signal lines through the filter circuit, prevents the electromagnetic interference generated by the equipment from exceeding the regulatory limits, and can also block external electromagnetic noise (such as radio interference and power fluctuations) from entering the equipment, avoiding equipment failure caused by electromagnetic noise. The main control MCU 900 is responsible for all control timing, signal detection and communication with the display board 02 of the power board 01.

[0038] This embodiment introduces a power consumption control circuit 400 between the EMC circuit 100 and the main circuit 00, used to control the connection status of the main circuit 00 with the live wire N1 or the neutral wire L1 in standby mode. When the main control MCU 900 needs to enter sleep / standby mode, it sends a signal to control the power consumption control circuit 400 to disconnect.

[0039] The food processor provided in this embodiment physically cuts off the mains power input to the main circuit 00 in standby mode through the energy consumption control circuit 400, directly eliminating the standby power consumption of the main circuit 00. In particular, it eliminates all power consumption of high-power modules such as the rectifier filter circuit 700 and the brushless motor inverter circuit 800 in the main circuit 00 in standby mode, achieving a "power-off" energy-saving effect. Compared with the power consumption management of specific local circuits or modules in related technologies, or simply entering a low-power mode through software control or reducing the clock frequency, this physical disconnection method of this disclosure can achieve a more thorough power-off, thereby reducing the standby power consumption to an extremely low level, such as below 0.8W, or even below 0.5W or even lower.

[0040] In the current context of energy conservation and environmental protection, standby power consumption is a crucial performance indicator for products. The solution provided in this disclosure can effectively reduce energy consumption throughout the product's lifecycle, meeting national and industry requirements for energy efficiency ratings of household appliances and enhancing the product's market competitiveness. As countries increasingly stringent their standards for standby power consumption of household appliances, this solution enables food processors to easily meet or even exceed the most stringent energy efficiency standards, providing strong support for the product's global market promotion.

[0041] Furthermore, when the main circuit 00 is completely powered off in standby mode, the relevant components in the main circuit 00 (such as the rectifier filter circuit 700 and the brushless motor inverter circuit 800) are no longer subjected to voltage or current stress, which helps to extend their service life. Moreover, physically cutting off the power supply to the main circuit 00 can also reduce safety hazards such as fires caused by internal short circuits or leakage in standby mode.

[0042] In one optional embodiment of this disclosure, the energy consumption control circuit 400 includes a controllable switch connected in series with the live wire N1 or the neutral wire L1. Using the controllable switch, the connection between the live wire N1 or the neutral wire L1 and the main circuit 00 can be physically disconnected, meaning that mains current cannot reach the main circuit 00. This direct physical isolation eliminates any current consumption of the main circuit 00 and all subsequent modules in standby mode, thereby reducing standby power consumption to an extremely low level, theoretically approaching zero, which is superior to most power management methods that target specific local circuits or modules or achieve "low-power" modes simply by reducing voltage or frequency. Considering that even a small leakage current can accumulate to a considerable amount of energy consumption during long-term standby, the physical disconnection of the controllable switch in this disclosure can completely eliminate such leakage current. Through precise control of the controllable switch by the main control MCU 900, the ultra-low-power mode can be intelligently and quickly entered or exited according to preset conditions (such as long-term inactivity, user-selected sleep mode, etc.), achieving automated and user-friendly energy-saving management.

[0043] Figure 3 The diagram shown is a structural schematic of a controllable switch in the energy management circuit 400 provided in this embodiment. Please refer to it. Figure 3In one optional embodiment of this disclosure, the controllable switch is an electromagnetic relay RL400. One contact of the electromagnetic relay RL400 is connected to the EMC circuit 100, and the other contact is connected to the main circuit 00. When the electromagnetic relay RL400 is in the off state, a physical air gap is formed between its contacts, completely cutting off the connection between the main circuit 00 and the mains power. This means that in standby mode, the main circuit 00 will achieve true zero power consumption because no current can flow, completely avoiding any leakage current or parasitic power consumption, thereby reducing the standby power consumption of the entire device to a level that is almost unattainable in the current market. Compared to using semiconductor switches such as bidirectional thyristors, electromagnetic relays have no leakage current when off, while semiconductor switches still have microampere-level leakage current in the off state. Therefore, using an electromagnetic relay as the controllable switch can truly achieve physical disconnection.

[0044] The physical disconnection characteristic of the RL400 electromagnetic relay ensures complete isolation of the high-voltage, high-current main circuit from the mains power in standby mode. This fundamentally eliminates the risk of fire, electric shock, or equipment damage due to internal component failure, short circuit, or transient overvoltage. Electromagnetic relays typically have high withstand voltage and current capabilities, capable of withstanding transient fluctuations and shocks in the mains power, further enhancing system reliability. Furthermore, the RL400 electromagnetic relay controls the coil's on / off state via an MCU, with simple and clear control logic that is easy to implement. As a mature electromechanical component, the electromagnetic relay boasts high reliability in its switching action and is not easily affected by electromagnetic interference, ensuring stable system operation.

[0045] When the electromagnetic relay RL400 is disconnected, the high-voltage capacitor, heating element, motor drive device, etc. in the main circuit 00 will no longer be energized, avoiding slow damage to the components caused by long-term voltage stress, thermal stress, and the weak current that may occur in standby mode. Therefore, this significantly extends the service life of these critical and expensive components, reducing product repair rates and maintenance costs.

[0046] Alternatively, please continue to refer to Figure 3The power consumption control circuit 400 also includes a transistor Q400 for driving the coil of the electromagnetic relay RL400 to turn on or off. The base of transistor Q400 is connected to the I / O port of the main control MCU 900, and a resistor R400 is placed between them. The collector of transistor Q400 is connected to the coil of the RL400 relay, and the emitter of transistor Q400 is grounded. A resistor R401 is connected between the base of transistor Q400 and the transmitter. The power consumption control circuit 400 also includes a freewheeling diode D400 connected in parallel with the coil of the RL400 relay. When the I / O port of the main control MCU 900 outputs a high level, transistor Q400 is saturated and turned on, the RL400 relay is energized, and the contacts of the electromagnetic relay are closed. When the I / O port of the main control MCU 900 outputs a low level, the transistor Q400 is cut off, the electromagnetic relay RL400 is not energized, and the contacts are open, so as to disconnect the rectifier filter circuit 700 and the brushless motor inverter circuit 800 from the live wire N1 or the neutral wire L1 in the standby state.

[0047] Please refer to Figure 2 In one optional embodiment of this disclosure, the main circuit 00 includes a rectifier filter circuit 700 and a brushless motor inverter circuit 800. The brushless motor inverter circuit 800 is located downstream of the rectifier filter circuit 700 and is electrically connected to the rectifier filter circuit 700. The energy consumption control circuit 400 is located upstream of the rectifier filter circuit 700 to disconnect the rectifier filter circuit 700 and the brushless motor inverter circuit 800 from the live wire N1 or the neutral wire L1 in standby mode.

[0048] The energy consumption control circuit 400 is located upstream of the rectifier and filter circuit 700. By physically cutting off the mains power input, it means that the rectifier and filter circuit 700 is completely inactive in standby mode. This not only avoids the small current consumption of the rectifier and filter circuit 700 itself (such as the rectifier bridge and filter capacitors), but more importantly, it also completely deprives the downstream brushless motor inverter circuit 800 of its power supply. The rectifier and filter circuit 700 is the first stage of power conversion after the mains power is connected, while the brushless motor inverter circuit 800 is the high-power module that drives the motor. These two are among the most important energy-consuming units in the food processor's operating mode. Completely cutting off their power in standby mode eliminates most of the standby power consumption, reducing the overall standby power consumption to an industry-leading ultra-low level, even approaching zero. The rectifier and filter circuit 700 handles high-voltage mains power, and the brushless motor inverter circuit 800 also handles high-voltage, high-current power. By completely disconnecting the power supply from the mains via the energy consumption control circuit 400, these high-voltage, high-current circuits are no longer energized in standby mode. This fundamentally eliminates the risk of leakage, short circuits, fires, or equipment damage caused by component aging, insulation failure, or external instantaneous overvoltage, providing a high level of safety. Prolonged energization or even weak current flow accelerates component aging. Disconnecting the power significantly extends the lifespan of critical high-voltage / high-power components such as the rectifier bridge and filter capacitors, reducing product failure rates and maintenance costs.

[0049] In one optional embodiment of this disclosure, one of the positive and negative input terminals of the rectifier-filter circuit 700 is connected to the power consumption control circuit 400, and the other is connected to the EMC circuit 100. By directly connecting the power consumption control circuit 400 (e.g., relay contacts) to one input terminal of the rectifier-filter circuit 700, while the other input terminal is connected to the EMC circuit 100, it is ensured that when the power consumption control circuit 400 is disconnected, the mains power cannot form a complete loop into the rectifier-filter circuit 700. This ensures that the rectifier-filter circuit 700 and its downstream brushless motor inverter circuit 800 can completely and physically lose their mains power supply during standby. This connection method directly and effectively cuts off the power input of the high-voltage main circuit, thereby eliminating all standby power consumption of the rectifier-filter circuit 700 and the brushless motor inverter circuit 800. This enables the food processor to achieve industry-leading, even near-zero, standby power consumption levels. By directly cutting off the mains power supply to the rectifier and filter circuit 700, it is ensured that the subsequent high-voltage DC bus (generated by the rectifier and filter) will not establish or maintain high voltage during standby, thereby minimizing the risk of electric shock, fire or short circuit to high-voltage components in standby mode.

[0050] Figure 4 The diagram shown is another structural schematic of the food processing machine provided in this embodiment of the present disclosure. Please refer to it. Figure 4The main circuit 00 also includes an overheat control circuit 600 and a voltage detection circuit 500, which are connected downstream of the energy consumption control circuit 400 and upstream of the rectifier and filter circuit 700, respectively. The overheat control circuit 600 is typically used to control heating elements in food processors, such as heating plates and heating tubes, to achieve cooking and heat preservation functions. When the energy consumption control circuit 400 is disconnected (standby state), the overheat control circuit 600 is also de-energized. This further enhances the energy-saving effect in standby mode, because even in standby mode, heating elements may have a slight leakage current or risk of accidental triggering; completely de-energizing them eliminates these potential hazards. This ensures that the heating function is activated only when needed and that the power supply is completely cut off in standby mode, avoiding potential energy consumption and safety risks (such as accidental overheating).

[0051] The voltage detection circuit 500 is used to monitor the input voltage (mains voltage) before rectification and filtering in real time for constant power control of heating. The main control MCU can determine whether the mains voltage is within a safe range based on the feedback from the voltage detection circuit. If the voltage is too high or too low, it can control the energy consumption control circuit to disconnect, thereby protecting the downstream rectification and filtering circuit, brushless motor inverter circuit, and other sensitive components from damage. When the energy consumption control circuit 400 is disconnected (standby state), the voltage detection circuit 500 will also be de-energized, which further enhances the standby energy-saving effect.

[0052] Please continue to refer to this. Figure 4 In one optional embodiment of this disclosure, the power board 01 further includes a zero-crossing detection circuit 200. The zero-crossing detection circuit 200 is disposed between the EMC circuit 100 and the power consumption control circuit 400 and is electrically connected to the main control MCU 900. The zero-crossing detection circuit 200 is used to perform zero-crossing detection and output a zero-crossing detection signal based on the detection result. The main control MCU 900 is used to transmit a control signal to the power consumption control circuit 400 based on the zero-crossing detection signal to control the controllable switch in the power consumption control circuit 400 to be turned on or off.

[0053] The zero-crossing detection circuit 200 converts the sinusoidal signal of the mains power into a square wave digital signal that the main control MCU can recognize. It serves two main purposes: as a time base for adjusting heating power and as a time base for the controllable switch operation in the energy consumption control circuit 400. When switching operations are performed on an AC circuit with a non-zero voltage (especially at peak values), arcs or sparks can occur. This is because energy (current in the inductor or voltage in the capacitor) may be stored in the load at the moment of disconnection, leading to a large instantaneous current or high voltage when the contacts separate or close, forming an arc. By performing the controllable switch's on / off operation at the AC voltage zero-crossing point (i.e., when the voltage is zero and the instantaneous power is also zero or close to zero), the generation of arcs and sparks can be minimized or significantly reduced. This is because energy exchange in the circuit is minimal when the voltage is zero. When the controllable switch is implemented as an electromagnetic relay, it reduces the erosion of the electromagnetic relay contacts, thereby improving product safety and reducing the risk of fire. Arcs and sparks are the main causes of relay contact erosion, carbonization, adhesion, or welding. Zero-crossing switching significantly reduces contact wear during the switching process, thereby substantially extending the electrical and mechanical lifespan of the electromagnetic relay. This directly reduces product failure rates and maintenance costs.

[0054] Switching high-power circuits at non-zero-crossing points generates transient voltage or current surges, which can produce high-frequency electromagnetic interference (EMI) through conduction or radiation. Switching at zero-crossing points results in minimal instantaneous power, leading to a smoother switching process, reduced harmonics and high-frequency noise, thus lowering the burden on the EMC circuit 100 and helping to meet electromagnetic compatibility standards. Furthermore, precise zero-crossing control avoids potential jitter, malfunctions, or interference with other sensitive circuits during switching, making the entire power board 01 and the food processor operate more stably and reliably.

[0055] Please continue to refer to this. Figure 4In one optional embodiment of this disclosure, the power board 300 further includes a switching power supply circuit 300. The switching power supply circuit 300 is connected to the neutral wire L1 and the live wire N1 upstream of the power consumption control circuit 400. That is, the switching power supply circuit 300 draws power directly from the mains power (i.e., after the EMC circuit 100 and before the power consumption control circuit 400) that is not controlled by the power consumption control circuit 400. The switching power supply circuit 300 is used to provide low-voltage power to the power board 01, such as the main control MCU 900 and the display board 02. This configuration ensures that even in standby mode, when the power consumption control circuit 400 disconnects the power to the main circuit 00, the switching power supply circuit 300 can still continue to operate, providing the necessary 15V and 5V low-voltage power to the main control MCU 900 and the display board 02. This allows the main control MCU 900 to respond to external wake-up signals (such as buttons or timers) in standby mode and send control commands to the power consumption control circuit 400, thereby reactivating the main circuit 00 and achieving controllable "deep sleep" and rapid wake-up, rather than complete power outage. Since the main control MCU 900 and display board 02 still have power when in standby mode, the food processor can quickly respond to user operations (such as pressing the start button) without going through a long startup process, which greatly improves the user experience.

[0056] Figure 5 The diagram shows another structural schematic of the food processing machine provided in this embodiment. In an optional embodiment of this disclosure, the display board 02 includes a display board MCU 10, which is connected to the main control MCU 900 to control the main control MCU 900 to enter sleep mode in standby mode. This embodiment introduces a higher level of power management strategy, whereby the display board MCU 10 (e.g., capable of detecting prolonged user inactivity, screen shutdown, etc.) determines whether the main control MCU 900 enters sleep mode. After entering sleep mode, the main control MCU 900 shuts down or reduces the clock frequency of most of its internal modules, disconnects unnecessary peripheral power supplies, and even reduces the core voltage, reducing its power consumption from the milliamp level in normal operation to the microamp level or even lower. Combined with the previous physical power cut-off of the main circuit 00 by the power consumption control circuit 400, and the current sleep control of the main control MCU 900 by the display board MCU 10, a multi-level, progressive power management strategy is formed. When the device is idle for a long time, it can reduce the overall standby power consumption to the lowest limit by cutting off the high-power circuit, controlling the main control MCU 900 to hibernate, or even the display board MCU 10 to enter an ultra-low power mode (only retaining the button wake-up function).

[0057] Please continue to refer to this. Figure 5In one optional embodiment of this disclosure, the display panel 02 further includes a display module (e.g., including a button display circuit 20), and the display panel MCU 10 is connected to the display module to reduce the brightness of the display module in standby mode.

[0058] Display modules (especially backlit LCDs or high-brightness LED / OLED screens) are often among the most power-consuming components in a device during operation. Even in standby mode, if the display remains fully illuminated, its power consumption can be significantly higher than that of the MCU or other control circuits. By reducing brightness, particularly backlight brightness (for LCDs), the power consumption of the display module can be directly and efficiently reduced. This is crucial for achieving the overall "ultra-low" or "extreme" standby power consumption target and effectively complements the physical power-off main circuit 00 and the hibernation mode of the main control MCU 900 in the aforementioned embodiments. It ensures that all major power-consuming components are considered and optimized in standby mode. Prolonged operation at high brightness accelerates the aging of display modules (especially backlight LEDs). Reducing brightness in standby mode reduces the workload of these components, thereby extending the overall lifespan of the display module.

[0059] Please continue to refer to this. Figure 5 In one optional embodiment of this disclosure, the display panel 02 further includes a temperature detection circuit (e.g., a paste temperature detection circuit 30), and the display panel MCU 10 is connected to the temperature detection circuit to control the temperature detection circuit to sleep in standby mode. Although temperature detection circuits (such as thermistors, temperature sensor chips, and their associated sampling circuits) typically have low power consumption, every achievable milliwatt or even microwatt of power consumption is crucial in the pursuit of extremely low power consumption in standby mode. By putting the temperature detection circuit into sleep mode (e.g., turning off its power, stopping sampling, turning off related amplifiers, etc.), its continuous current consumption during standby can be eliminated. Long-term power-on or operation, even with very low power consumption, will cause some wear and tear on electronic components. Putting the temperature detection circuit into sleep mode when it is not needed can reduce its operating time, thereby extending the sensor's lifespan.

[0060] For example, the specific circuit structures of the EMC circuit 100, energy consumption control circuit 400, zero-crossing detection circuit 200, rectifier filter circuit 700, switching power supply circuit 300, overheat control circuit 600, and voltage detection circuit 500 mentioned in the embodiments of this disclosure can be found in the following references. Figure 6 However, this disclosure is not limited to this, among which, Figure 6 The diagram shown is a circuit diagram of a food processing machine provided in an embodiment of this disclosure.

[0061] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0062] The above description is merely a specific embodiment of this disclosure, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A food processing machine, comprising a main unit, a cup body, a power board, and a display panel, wherein the cup body is provided with a pulverizing blade driven by a brushless motor; characterized in that, The power board includes a power supply circuit, an EMC circuit, a main circuit, and a main control MCU. The power supply circuit includes a live wire and a neutral wire and is connected to the EMC circuit. The main control MCU is connected to both the EMC circuit and the main circuit. The main circuit includes a rectifier and filter circuit and a brushless motor inverter circuit. The brushless motor inverter circuit is located downstream of the rectifier and filter circuit and is electrically connected to it. It also includes an energy consumption control circuit disposed between the EMC circuit and the main circuit. The energy consumption control circuit is used to control the connection status between the main circuit and the live wire or neutral wire in the standby state. The main control MCU is connected to the energy consumption control circuit to control the operation of the energy consumption control circuit.

2. The food processing machine according to claim 1, characterized in that, The energy consumption control circuit includes a controllable switch, which is connected in series with the live wire or the neutral wire.

3. The food processing machine according to claim 2, characterized in that, The controllable switch is an electromagnetic relay, with one contact of the electromagnetic relay connected to the EMC circuit and the other contact connected to the main circuit.

4. The food processing machine according to claim 1, characterized in that, The energy consumption control circuit is located upstream of the rectifier and filter circuit to disconnect the rectifier and filter circuit and the brushless motor inverter circuit from the live wire or neutral wire in the standby state.

5. The food processing machine according to claim 1, characterized in that, One of the positive and negative input terminals of the rectifier filter circuit is connected to the energy consumption control circuit, and the other is connected to the EMC circuit.

6. The food processing machine according to claim 2, characterized in that, The power board also includes a zero-crossing detection circuit, which is located between the EMC circuit and the energy consumption control circuit and is electrically connected to the main control MCU. The zero-crossing detection circuit is used to perform zero-crossing detection and output a zero-crossing detection signal based on the detection result. The main control MCU is used to transmit a control signal to the energy consumption control circuit based on the zero-crossing detection signal to control the controllable switch to be turned on or off.

7. The food processing machine according to claim 1, characterized in that, It also includes a switching power supply circuit, which is connected to the neutral and live wires upstream of the energy consumption control circuit. The switching power supply circuit is used to provide low-voltage power to the main control MCU and the display board.

8. The food processing machine according to claim 1, characterized in that, The display panel includes a display panel MCU, which is connected to the main control MCU to control the main control MCU to go into sleep mode in standby mode.

9. The food processing machine according to claim 8, characterized in that, The display panel also includes a display module, and the display panel MCU is connected to the display module to reduce the brightness of the display module in standby mode.

10. The food processing machine according to claim 8, characterized in that, The display panel also includes a temperature detection circuit, and the display panel MCU is connected to the temperature detection circuit to control the temperature detection circuit to go into sleep mode in standby mode.

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