Handheld kitchen equipment and driving circuit thereof

Abstract

Handheld kitchen equipment and a driving circuit thereof are applied to the technical field of cooking, the handheld kitchen equipment comprises a main body, and a driving piece, the driving circuit and a movement assembly which are arranged on the main body, and the movement assembly comprises one of a milk foam head, a cleaning head and a stirring head; the transmission end of the driving part is used for moving and driving the moving assembly to move. The driving circuit comprises a variable resistance module and a driving module; the variable resistance module is used for outputting a resistance signal corresponding to the current resistance; wherein the resistance value of the variable resistance module can continuously change in a first range of resistance values; the driving module is used for generating a corresponding first driving signal according to the resistance value first signal so as to drive the transmission end of the driving part to move at a corresponding speed; wherein the different first driving signals are used for driving the transmission end of the driving part to move at different speeds. The variable resistance module can continuously change in the first range of resistance, so that the speed of the motion assembly can be flexibly adjusted.

Description

Technical Field

[0001] This application relates to the field of cooking technology, specifically to a handheld kitchen device and its driving circuit. Background Technology

[0002] A milk frother is a handheld kitchen appliance used in cooking to create bubbles in food, such as milk. Handheld kitchen appliances typically use a frother that rotates around the food to create bubbles. Additionally, the moving parts of handheld kitchen appliances can be replaced with cleaning heads, stirring heads, etc.

[0003] Current technical solutions for handheld kitchen appliances typically only have one speed setting, or multiple speed settings with significant variations in speed between them. This limits the flexibility of adjusting the speed of the moving parts, failing to meet users' speed control needs. Therefore, new technical solutions are needed. Utility Model Content

[0004] The main technical problem this application addresses is the inflexible speed adjustment of the moving components.

[0005] According to a first aspect, one embodiment provides a handheld kitchen device, including a main body, and a drive, a drive circuit, and a motion component disposed on the main body, the motion component including one of a milk frothing head, a cleaning head, and a stirring head;

[0006] The driving component has a transmission end and a control input end, and the transmission end of the driving component is connected to the motion component; the transmission end of the driving component is used to move and drive the motion component to move.

[0007] The driving circuit includes a variable resistance module and a driving module;

[0008] The variable resistance module has a resistance output terminal, which is used to output the resistance signal corresponding to the current resistance value of the variable resistance module; wherein, the resistance value of the variable resistance module can continuously change within a first range of resistance values, and each resistance value in the first range of resistance values ​​has a corresponding first resistance signal.

[0009] The drive module has a control terminal and a drive output terminal. The control terminal of the drive module is connected to the resistance output terminal, and the drive output terminal is connected to the control input terminal of the drive component. The drive module is used to generate a corresponding first drive signal according to the first resistance signal, so as to drive the transmission end of the drive component to move at a corresponding speed. Each first resistance signal has a corresponding first drive signal, and different first drive signals are used to drive the transmission end of the drive component to move at different speeds.

[0010] In some embodiments, the handheld kitchen device further includes an operating component disposed on the main body, and the variable resistance module also has a movable resistance adjustment terminal. The operating component is connected to the resistance adjustment terminal. The operating component is movable and drives the resistance adjustment terminal to move. The resistance value of the variable resistance module corresponds to the position of the resistance adjustment terminal. The resistance adjustment terminal is continuously movable within a first range of positions, so that the resistance value of the variable resistance module continuously changes within the first range of resistance values.

[0011] In some embodiments, the variable resistance module includes a sliding transformer.

[0012] In some embodiments, the resistance value of the variable resistance module can also be within a second range of resistance values, and each resistance value in the second range of resistance values ​​has a corresponding second resistance value signal. The drive module is used to generate a corresponding second drive signal based on the second resistance value signal, so as to drive the transmission end of the drive component to stop moving.

[0013] In some embodiments, the resistance value of the variable resistance module can also be within a third range of resistance values. Each resistance value in the third range has a corresponding third resistance signal. The driving module is used to generate a corresponding third driving signal based on the third resistance signal to drive the transmission end of the driving component to start moving. The third range of resistance values ​​may be the same as or different from the first range of resistance values.

[0014] In some embodiments, the driving element includes a drive motor, and different first drive signals are used to drive the transmission end of the driving element to rotate at different rotational speeds.

[0015] In some embodiments, the drive module includes a controller and a switching device;

[0016] The first end of the switching device is used to connect to the control input end of the driving device, the second end is used to ground, and the control end is used to connect to the control end of the controller.

[0017] The controller's control terminal is used to output the first drive signal with a duty cycle corresponding to the first drive signal or a frequency corresponding to the first drive signal to the control terminal of the switching device, so that the switching device alternately turns on and off with the corresponding duty cycle or the corresponding frequency.

[0018] In some embodiments, the drive module further includes a feedback circuit; the input terminal of the feedback circuit is connected to the second terminal of the switching device, the output terminal of the feedback circuit is connected to the controller, and the feedback circuit is used to collect the voltage or current of the second terminal of the switching device and output a corresponding feedback signal to the controller.

[0019] According to a second aspect, one embodiment provides a driving circuit applied to a motion component of a handheld kitchen device, the driving circuit including a variable resistance module and a driving module;

[0020] The variable resistance module has a resistance output terminal, which is used to output the resistance signal corresponding to the current resistance value of the variable resistance module; wherein, the resistance value of the variable resistance module can continuously change within a first range of resistance values, and each resistance value in the first range of resistance values ​​has a corresponding first resistance signal.

[0021] The drive module has a control terminal and a drive output terminal. The control terminal of the drive module is connected to the resistance output terminal, and the drive output terminal is connected to the control input terminal of the drive component. The drive module is used to generate a corresponding first drive signal according to the first resistance signal, so as to drive the motion component to move at a corresponding speed. Each first resistance signal has a corresponding first drive signal, and different first drive signals are used to drive the motion component to move at different speeds.

[0022] In some embodiments, the resistance value of the variable resistance module can also be within a second range of resistance values, and each resistance value in the second range of resistance values ​​has a corresponding second resistance value signal. The drive module is used to generate a corresponding second drive signal based on the second resistance value signal, so as to drive the transmission end of the drive component to stop moving.

[0023] According to the handheld kitchen device and its driving circuit in the above embodiment, since the variable resistance module can continuously change within a first range of resistance values, and each resistance value in the first range of resistance values ​​has a corresponding first resistance value signal, the driving module can generate a corresponding first driving signal according to the first resistance value signal. Different first driving signals are used to drive the transmission end of the driving component to move at different speeds, thereby enabling the speed of the moving component to be flexibly adjusted. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a handheld kitchen device according to one embodiment;

[0025] Figure 2 This is a schematic diagram of the structure of a driving circuit according to one embodiment;

[0026] Figure 3 This is a schematic diagram of the drive circuit in another embodiment;

[0027] Figure 4 This is a schematic diagram of the drive circuit in another embodiment. Detailed Implementation

[0028] The present application will now be described in further detail with reference to specific embodiments and accompanying drawings. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; the relevant operations can be fully understood based on the description in the specification and general technical knowledge in the art.

[0029] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0030] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0031] Some embodiments provide a handheld kitchen device. Please refer to [reference needed]. Figure 1 The handheld kitchen device includes a main body, and a motion component 10, a drive component 20 and a drive circuit 30 configured on the main body, which will be described in detail below.

[0032] The main body is used for the configuration of various components. In some embodiments, the main body includes a housing with a mounting cavity. Various components may be entirely mounted on the housing, entirely mounted within the mounting cavity, or partially mounted on the housing and partially within the mounting cavity. The appropriate configuration can be made according to the installation requirements of the components, and will not be elaborated further here. For example, the drive circuit 30 may be mounted within the mounting cavity; the motion component 10 may be mounted on the housing; and the drive element 20 may be mounted within the mounting cavity. In some embodiments, the housing also has a handle for user gripping. The handle may be formed by a recess or protrusion on the surface of the housing, or it may be a grip provided on the housing, and will not be elaborated further here.

[0033] The motion component 10 is used to perform related functions during exercise.

[0034] In some embodiments, the motion component 10 includes one of a milk frother, a cleaning head, and a stirring head. The milk frother is used to generate bubbles in the food. In some embodiments, the milk frother has a structure for generating bubbles, such as a porous structure or a spiral stirring structure, which will not be described further. The cleaning head is used for cleaning; for example, the cleaning head has a structure for generating cleaning, such as a brush structure, which will not be described further. The stirring head is used to stir and mix the food. In some embodiments, the stirring head has a structure for stirring, such as a stirring blade structure, which will not be described further.

[0035] In some embodiments, when the motion component 10 performs the relevant functions, it may perform vibrational motion, rotational motion, or other types of motion, such as enabling relative movement between the milk frother and the stirring head and the food, thereby generating bubbles in the food and stirring and mixing the food, respectively.

[0036] The drive component 20 is used to drive the motion component 10 to move.

[0037] In some embodiments, the drive unit 20 has a transmission end and a control input end. The transmission end of the drive unit 20 is connected to the motion component 10 to drive the motion component 10 to move after the motion is performed. The control input end of the drive unit 20 is connected to the drive circuit 30 to receive drive signals.

[0038] In some embodiments, the driving element 20 may include a drive motor, whose transmission end rotates to drive the motion component 10 to rotate. In some embodiments, the driving element 20 may be a vibration motor, whose transmission end vibrates to drive the motion component 10 to vibrate. In some embodiments, the driving element 20 may select a corresponding driving device or drive mechanism according to the required motion of the motion component 10, which will not be elaborated further here.

[0039] The drive circuit 30 is used to output a drive signal to the drive element 20, so that the drive element 20 responds to the drive signal and moves.

[0040] Please refer to Figure 2In some embodiments, the driving circuit 30 includes a variable resistance module 32 and a driving module 34. The variable resistance module 32 is used to output a resistance signal to the driving module 34. The variable resistance module 32 has a resistance output terminal, which outputs a resistance signal corresponding to the current resistance value of the variable resistance module 32. The driving module 34 is used to generate a corresponding driving signal based on the resistance signal. The driving module 34 has a control terminal and a driving output terminal. The control terminal of the driving module 34 is connected to the resistance output terminal of the variable resistance module 32 to receive the resistance signal, and the driving output terminal of the driving module 34 is connected to the control input terminal of the driving element 20 to output a driving signal to the driving element 20.

[0041] In some embodiments, the resistance value of the variable resistance module 32 can continuously change within a first range of resistance values, and each resistance value in the first range has a corresponding first resistance value signal. In some embodiments, the resistance value of the variable resistance module 32 can be a discrete continuous change or a non-discrete continuous change within the first range of resistance values. For example, it can perform discrete continuous changes of 1Ω, 2Ω, 3Ω, 4Ω, and 5Ω within the range of 1-5Ω, or non-discrete continuous changes of any resistance value within the range of 1-5Ω. In some embodiments, the first resistance value signals corresponding to each resistance value in the first range are different, that is, there is a one-to-one correspondence between the first resistance value signal and the resistance value. In some embodiments, the first resistance value signal can be a voltage signal or a current signal that corresponds one-to-one with the resistance value.

[0042] In some embodiments, the resistance value of the variable resistance module 32 can also be within a second range, and each resistance value in the second range has a corresponding second resistance signal. In some embodiments, the resistance value of the variable resistance module 32 can change continuously within the second range; for example, it can be a discrete continuous change or a non-discrete continuous change within the second range, which will not be elaborated further here. In some embodiments, the second range resistance value is different from the first range resistance value, but can be continuous; for example, the first range resistance value is 1-5Ω, including the endpoint 5Ω, and the second range resistance value is 5-10Ω, excluding the endpoint 5Ω. In some embodiments, the second resistance signal corresponding to each resistance value in the second range is different, that is, the second resistance signal and the resistance value have a one-to-one correspondence. In some embodiments, the second resistance signal can be a voltage signal or a current signal that corresponds one-to-one with the resistance value.

[0043] In some embodiments, the resistance value of the variable resistance module 32 can also be within a third range, and each resistance value in the third range has a corresponding third resistance signal. In some embodiments, the resistance value of the variable resistance module 32 can change continuously within the third range; for example, it can be a discrete continuous change or a non-discrete continuous change within the third range, which will not be elaborated further here. In some embodiments, the third range resistance value is different from the first and second range resistance values, but can be continuous, which will not be elaborated further here. In some embodiments, the third range resistance value can also be the same as the second range resistance value. In some embodiments, the third resistance signal corresponding to each resistance value in the third range is different, that is, the third resistance signal and the resistance value have a one-to-one correspondence. In some embodiments, the third resistance signal can be a voltage signal or a current signal that corresponds one-to-one with the resistance value.

[0044] In some embodiments, the handheld kitchen device also includes an operating component disposed on the main body. The variable resistance module 32 also has a movable resistance adjustment terminal. The operating component is connected to the resistance adjustment terminal, and the operating component can move to drive the resistance adjustment terminal to move. For example, a user can operate the operating component to move it, thereby driving the resistance adjustment terminal to move. The resistance value of the variable resistance module 32 corresponds to the position of the resistance adjustment terminal; for example, each position of the resistance adjustment terminal results in the variable resistance module 32 being at a corresponding resistance value. The resistance adjustment terminal can move continuously within a first range of positions, causing the resistance value of the variable resistance module 32 to continuously change within the first range of resistance values. In some embodiments, the resistance adjustment terminal can also move continuously within a second range position, so that the resistance value of the variable resistance module 32 changes continuously within the second range resistance value, and can move continuously within a third range position, so that the resistance value of the variable resistance module 32 changes continuously within the third range resistance value. The second range position is different from the first range position, but can be continuous. The third range position is different from the first range position and the second range position, but can be continuous, or it can be the same as the second range position. This will not be elaborated further here.

[0045] In some embodiments, the movement of the operating component and the movement of the resistance adjustment terminal are consistent. For example, the operating component can move in a linear back-and-forth motion, causing the resistance adjustment terminal to also move in a linear back-and-forth motion, with different positions on the line corresponding to different resistance values. Alternatively, the operating component can move in a rotational motion, causing the resistance adjustment terminal to also move in a rotational motion, with different rotation angles corresponding to different resistance values. In some embodiments, the operating component and the resistance adjustment terminal can also move in other ways, which can be consistent or inconsistent. For example, when the operating component rotates, it can be driven by a transmission component to cause the resistance adjustment terminal to move in a linear back-and-forth motion, which will not be elaborated further. In some embodiments, the operating component can be configured accordingly based on its movement. For example, when the operating component moves in a rotational motion, it can be a knob or button; when the operating component moves in a linear back-and-forth motion, it can be a sliding button, which will not be elaborated further.

[0046] In some embodiments, the resistance adjustment terminal can move continuously, corresponding to a non-discrete continuous change in the resistance value of the variable resistance module 32. In some embodiments, the resistance adjustment terminal can also slide in stages, corresponding to a discrete continuous change in the resistance value of the variable resistance module 32. For example, based on the limiting structure, the resistance adjustment terminal can slide directly to the endpoint of the first range position, the second range position, or the third range position when it slides, thereby realizing the staged sliding.

[0047] Please refer to Figure 3 In some embodiments, the variable resistance module 32 includes a sliding converter RV. The sliding converter RV has a resistance adjustment terminal (not shown), a first terminal (terminal 1 of the sliding converter RV), a second terminal (terminal 3 of the sliding converter RV), and a sliding output terminal (terminal 2 of the sliding converter RV). The first terminal of the sliding converter RV is used to connect to a power supply, the second terminal of the sliding converter RV is used to ground or connected to the output terminal of the controller, and the sliding output terminal of the sliding converter RV is connected to the output terminal of the controller. When the resistance adjustment terminal of the sliding converter RV moves, the resistance value of the sliding converter RV changes, and the sliding output terminal of the sliding converter RV outputs a voltage signal corresponding to the resistance value. In some embodiments, the sliding converter RV can also be connected in series or in parallel with other resistors to adjust the voltage signal output by the sliding output terminal. In some embodiments, when the second terminal of the sliding converter RV is connected to the controller, the controller can turn the output terminal off or on to adjust the resistance signal output by the sliding converter RV. For example, when the output terminal connected to the second terminal and the sliding output terminal of the sliding converter RV is turned off, the sliding converter RV stops outputting the resistance signal to reduce the power consumption of the sliding converter RV.

[0048] In some embodiments, the driving module 34 is used to generate a corresponding first driving signal based on the first resistance signal, so as to drive the transmission end of the driving component 20 to move at a corresponding speed. Each first resistance signal has a corresponding first driving signal, and different first driving signals are used to drive the transmission end of the driving component 20 to move at different speeds. In some embodiments, multiple first resistance signals may correspond to one first driving signal, or each first resistance signal may correspond to one first driving signal. In some embodiments, the first driving signal may be a PWM signal, in which case the duty cycles of the PWM signals between different first driving signals are different, thereby driving the transmission end of the driving component 20 to move at different speeds. In some embodiments, when the driving component 20 includes a drive motor, different first driving signals are used to drive the transmission end of the driving component 20 to rotate at different rotational speeds.

[0049] In some embodiments, the drive module 34 is used to generate a corresponding second drive signal based on the second resistance signal, so as to drive the transmission end of the drive element 20 to stop moving. Each second resistance signal may correspond to a single second drive signal. In some embodiments, the second drive signal may be a high-level signal or a low-level signal; for example, the drive module 34 may respond to the second drive signal and stop driving the drive element 20, or the drive module 34 may respond to the second drive signal and turn off.

[0050] In some embodiments, the drive module 34 is used to generate a corresponding third drive signal based on the resistance value third signal, so as to drive the transmission end of the drive member 20 to start moving. Each resistance value third signal may correspond to a single third drive signal. In some embodiments, the second drive signal may be a high-level signal or a low-level signal. For example, the drive module 34 responds to the third drive signal and drives the drive member 20 to move at an initial speed; for example, the drive module 34 starts moving in response to the third drive signal.

[0051] Please refer to Figure 3 and Figure 4 In some embodiments, the drive module 34 includes a controller U3 and a switching device Q2.

[0052] The first terminal of the switching device Q2 is used to connect to the control input terminal of the driving component 20, that is, pins 1 and 2 of connector J2 are used to connect to the positive and negative terminals of the driving component 20, respectively. The first terminal of the switching device Q2 is connected to pin 1 of connector J2, and the second terminal of the switching device Q2 is used for grounding. The control terminal of the switching device Q2 is used to connect to the control terminal of the controller U3. In some embodiments, the switching device Q2 may include a transistor or field-effect transistor, etc., which has a switching function.

[0053] The control terminal of controller U3 outputs a first drive signal (MOT) with a duty cycle corresponding to the first drive signal or a frequency corresponding to the first drive signal to the control terminal of switching device Q2, causing switching device Q2 to alternately turn on and off with the corresponding duty cycle or frequency, thereby causing the driving element 20 to move at the corresponding speed. In some embodiments, controller U3 may include control devices with control functions such as CPU, FPGA, and microcontroller.

[0054] Please refer to Figure 4 In some embodiments, the drive module 34 further includes a feedback circuit. The input terminal of the feedback circuit is connected to the second terminal of the switching device Q2, and the output terminal of the feedback circuit is connected to the controller U3. The feedback circuit is used to acquire the voltage or current at the second terminal of the switching device Q2 and output a corresponding feedback signal (L-AD) to the controller U3. In some embodiments, the voltage or current at the second terminal of the switching device Q2 is related to the voltage or current of the drive element 20. Therefore, the feedback signal can characterize the voltage or current of the drive element 20. When the feedback signal does not meet preset conditions, the controller U3 can adjust the drive signal based on the feedback signal to achieve feedback control based on the feedback circuit. In some embodiments, the feedback circuit includes a sampling resistor R5, one end of which is connected to the second terminal of the switching device Q2, and the other end of which is connected to the controller U3.

[0055] In the above embodiments, based on the continuous change of the resistance value of the variable resistance module 32, the drive module 34 can generate a corresponding drive signal, and different drive signals can be used to drive the drive component 20 to move at different speeds, thereby enabling the speed of the motion component 10 to be flexibly adjusted.

[0056] The above is a brief description of handheld kitchen equipment.

[0057] Some embodiments also provide a drive circuit applied to the moving components of a handheld kitchen device. In some embodiments, the drive circuit can be implemented using the drive circuit 30 of the handheld kitchen device described above, and will not be described in detail here.

[0058] The above examples illustrate this application only to aid understanding and are not intended to limit its scope. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the ideas presented.

Claims

1. A hand-held kitchen device, characterized in that, The milk frother comprises a main body, a driving member, a driving circuit and a moving assembly arranged on the main body, wherein the moving assembly comprises one of a milk frothing head, a cleaning head and a stirring head; The driving member has a transmission end and a control input end, and the transmission end of the driving member is connected with the moving assembly; the transmission end of the driving member is used to move and drive the moving assembly to move; The driving circuit comprises a variable resistance module and a driving module; The variable resistance module has a resistance output end, which is used to output a resistance signal corresponding to a current resistance value of the variable resistance module; wherein the resistance value of the variable resistance module can continuously change in a first range of resistance values, and each resistance value in the first range of resistance values has a corresponding resistance first signal; The driving module has a control end and a driving output end, the control end of the driving module is connected with the resistance output end, and the driving output end is connected with the control input end of the driving member; the driving module is used to generate a corresponding first driving signal according to the resistance first signal, so as to drive the transmission end of the driving member to move at a corresponding speed; wherein each resistance first signal has a corresponding first driving signal, and different first driving signals are used to drive the transmission end of the driving member to move at different speeds.

2. The hand-held kitchen device as claimed in claim 1, characterized in that, The operation member is arranged on the main body, the variable resistance module further has a movable resistance adjusting end, and the operation member is connected with the resistance adjusting end; the operation member can move and drive the resistance adjusting end to move, and the resistance value of the variable resistance module corresponds to the position of the resistance adjusting end; wherein the resistance adjusting end can continuously move in a first range of positions, so that the resistance value of the variable resistance module continuously changes in the first range of resistance values.

3. The hand-held kitchen device as claimed in claim 2, characterized in that, The variable resistance module comprises a sliding transducer.

4. The hand-held kitchen device as claimed in claim 1, characterized in that, The resistance value of the variable resistance module can also be in a second range of resistance values, each resistance value in the second range of resistance values has a corresponding resistance second signal, and the driving module is used to generate a corresponding second driving signal according to the resistance second signal, so as to drive the transmission end of the driving member to stop moving.

5. The hand-held kitchen device as claimed in claim 1, characterized in that, The resistance value of the variable resistance module can also be in a third range of resistance values, each resistance value in the third range of resistance values has a corresponding resistance third signal, and the driving module is used to generate a corresponding third driving signal according to the resistance third signal, so as to drive the transmission end of the driving member to start moving; wherein the third range of resistance values is the same as or different from the first range of resistance values.

6. The hand-held kitchen device of claim 1, wherein The driving member comprises a driving motor, and different first driving signals are used to drive the transmission end of the driving member to rotate at different rotating speeds.

7. The hand-held kitchen device as claimed in claim 1, characterized in that, The driving module comprises a controller and a switching device; The first end of the switching device is used to be connected with the control input end of the driving member, the second end is used to be grounded, and the control end is used to be connected with the control end of the controller; The control end of the controller is configured to output the first driving signal corresponding to the duty cycle or the frequency to the control end of the switching device, so that the switching device is turned on and turned off alternately at the corresponding duty cycle or at the corresponding frequency.

8. The hand-held kitchen device as claimed in claim 7, characterized in that, The driving module further comprises a feedback circuit, an input end of the feedback circuit is configured to be connected with the second end of the switching device, and an output end of the feedback circuit is connected with the controller, the feedback circuit is configured to collect the voltage or current of the second end of the switching device and output a corresponding feedback signal to the controller.

9. A drive circuit, characterized by The driving circuit is applied to a motion assembly of a handheld kitchen device, and the driving circuit comprises a variable resistance module and a driving module. The variable resistance module has a resistance output end configured to output a resistance signal corresponding to the current resistance of the variable resistance module, the resistance of the variable resistance module can continuously change in a first range of resistance values, and each resistance value in the first range of resistance values has a corresponding resistance first signal. The driving module has a control end and a driving output end, the control end of the driving module is connected with the resistance output end, and the driving output end is connected with a control input end of a driving member; the driving module is configured to generate a corresponding first driving signal according to the resistance first signal, so as to drive the motion assembly to move at a corresponding speed; each resistance first signal has a corresponding first driving signal, and different first driving signals are used to drive the motion assembly to move at different speeds.

10. The drive circuit of claim 9, wherein, The resistance of the variable resistance module can also be in a second range of resistance values, each resistance value in the second range of resistance values has a corresponding resistance second signal, and the driving module is configured to generate a corresponding second driving signal according to the resistance second signal, so as to drive a transmission end of the driving member to stop moving.

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