CN214231011U - Handheld mixer control circuit and handheld mixer - Google Patents

Abstract

The application provides a handheld mixer control circuit and handheld mixer. The control circuit of the hand-held stirring machine comprises a power supply connecting end, a driving circuit, a speed regulation control circuit and a through switch. The power supply connecting end comprises a first power supply connecting end and a second power supply connecting end; the driving circuit comprises a driving device, the driving device comprises a control electrode, a first electrode and a second electrode, the driving device is connected with the motor in series, the first electrode is connected with the first power supply connecting end, the second electrode is connected with one end of the motor, and the other end of the motor is connected with the second power supply connecting end; the speed regulation control circuit comprises a bidirectional conducting device and an adjustable resistor which are connected in series between a control electrode and a second electrode of the driving device; the direct switch is connected in parallel with the bidirectional conducting device and the adjustable resistor which are connected in series, and when the direct switch is disconnected, the speed regulating control circuit regulates the rotating speed of the motor by controlling the conducting time of the driving device; when the through switch is closed, the motor is rotated at full speed. The hand mixer includes a motor and a hand mixer control circuit. The cost is low.

Description

Handheld mixer control circuit and handheld mixer

Technical Field

The application relates to the field of household appliances, in particular to a handheld stirrer control circuit and a handheld stirrer.

Background

The handheld stirrer is small in size, convenient to use and widely applied to various occasions for stirring food materials. The handheld stirrer can be used for stirring liquid food materials such as water, soybean milk, milk and egg white, can also be used for stirring solid food materials such as flour, and can also be used for stirring a mixture of the liquid food materials and the solid food materials (such as a mixture of water and flour), so that the handheld stirrer is wide in application range, and great convenience is brought to life of people. Some current hand-held blenders are relatively expensive.

SUMMERY OF THE UTILITY MODEL

The application provides a handheld mixer control circuit of modified and cooking machine can reduce the cost of handheld mixer.

The application provides a handheld mixer control circuit, handheld mixer includes the motor, includes:

the power supply connecting end comprises a first power supply connecting end and a second power supply connecting end and is used for connecting a power supply;

the driving circuit comprises a driving device, the driving device comprises a control electrode, a first electrode and a second electrode, the driving device is connected with the motor in series, the first electrode is connected with the first power supply connecting end, the second electrode is connected with one end of the motor, and the other end of the motor is connected with the second power supply connecting end;

the speed regulation control circuit comprises a bidirectional conducting device and an adjustable resistor which are connected in series between the control electrode and the second electrode of the driving device;

the direct switch is connected with the bidirectional conducting device and the adjustable resistor in parallel, and when the direct switch is switched off, the speed regulating control circuit regulates the rotating speed of the motor by controlling the conducting time of the driving device; when the through switch is closed, the motor is rotated at full speed.

Furthermore, the bidirectional conducting device is connected between the control electrode and the adjustable resistor, the speed regulation control circuit comprises a first capacitor, one end of the first capacitor is connected between the first power connection end and the first electrode of the driving device, and the other end of the first capacitor is connected between the bidirectional conducting device and the adjustable resistor. In some embodiments, the charging time of the first capacitor and the conduction time of the bidirectional conduction device can be adjusted by adjusting the resistance value of the adjustable resistor, so that the rotation speed of the motor can be accurately adjusted, and the circuit is simple.

Further, the adjustable resistor comprises a potentiometer.

Further, the bidirectional conducting device comprises a bidirectional diode. In some embodiments, the bidirectional diode is a more readily available circuit component device and is less costly.

Furthermore, the control circuit of the handheld stirring machine comprises a current-limiting resistor, one end of the current-limiting resistor is connected between the motor and the second pole of the driving device, and the other end of the current-limiting resistor is connected to the control pole through the through switch. In some embodiments, when the through switch is closed, the current limiting resistor can control the magnitude of the current input to the control electrode, so as to prevent the driving device from being burned out due to the overlarge current of the control electrode.

Furthermore, the control circuit of the handheld stirring machine comprises a safety switch, and the safety switch is connected in series with the driving device and the motor between the first power supply connecting end and the second power supply connecting end. In some embodiments, the safety switch can control the on-off of the control circuit of the hand-held blender, and the circuit safety is higher.

Further, the hand-held blender control circuit includes a second capacitor coupled between the first pole and the second pole of the drive device. In some embodiments, the drive device may be protected.

Further, the driving device comprises a thyristor. In some embodiments, the thyristor can bear larger current, and has low cost and high performance-price ratio.

The application provides a handheld mixer, includes:

a motor;

the hand-held mixer control circuit of any one of the above claims connected to the motor.

Further, the motor comprises an alternating current motor.

In some embodiments of the present application, the driving device is connected in series with the motor, the bidirectional conducting device and the adjustable resistor of the speed regulation control circuit are connected in series to the control electrode of the driving device, the through switch is connected in parallel with the bidirectional conducting device and the adjustable resistor which are connected in series, the motor is connected to the power supply through the driving device during speed regulation operation and full speed operation, and the motor does not need to be connected to the power supply through the through switch, so that the through switch can select a switching device with low current, and the cost is low.

Drawings

FIG. 1 is a block circuit diagram of a hand-held blender control circuit as provided herein;

FIG. 2 is a circuit diagram of the hand-held blender control circuit of FIG. 1;

FIG. 3 is an exploded perspective view of a hand blender provided in accordance with an embodiment of the present application.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of the terms "a" or "an" and the like in the description and in the claims of this application do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" includes two, and is equivalent to at least two. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

FIG. 1 is a block circuit diagram of a hand blender control circuit 100 provided herein. Fig. 2 is a circuit diagram of the hand-held blender control circuit 100 of fig. 1. The hand mixer control circuit 100 is applied to a hand mixer. The hand mixer includes a motor 15. The hand-held mixer control circuit 100 includes a power connection terminal 14, a driving circuit 13, a speed control circuit 11 and a through switch 12. The power connection terminal 14 includes a first power connection terminal 141 and a second power connection terminal 142. The power connection 14 may be used to connect to a power supply 17 when the hand mixer is in operation. The power supply 17 supplies power to the hand-held mixer through the first power connection 141 and the second power connection 142, thereby driving the hand-held mixer to operate.

The drive circuit 13 includes a drive device 131. The driving device 131 includes a control electrode G, a first electrode T1 and a second electrode T2, the driving device 131 is connected in series with the motor 15, the first electrode T1 is connected to the first power connection terminal 141, the second electrode T2 is connected to one end of the motor 15, and the other end of the motor 15 is connected to the second power connection terminal 142. In some embodiments, by controlling the on/off between the first pole T1 and the second pole T2 of the driving device 131, the on/off of the motor 15 can be controlled. For example, in some embodiments, inputting a trigger electrical signal to the control electrode G of the driving device 131 may trigger the first and second electrodes T1 and T2 of the driving device 131 to conduct, thereby energizing the motor 15. The drive means 131 can satisfy strong current requirements to ensure that strong currents (e.g. between 5 and 10 amps) generated in the circuit by the motor 15 do not cause damage to the circuit.

The throttle control circuit 11 comprises a bidirectional conducting device 111 and an adjustable resistor 112 connected in series between the control electrode G and the second electrode T2 of the driving device 131. The through switch 12 is connected in parallel with the bidirectional conducting device 111 and the adjustable resistor 112 which are connected in series, and when the through switch 12 is disconnected, the speed regulating control circuit 11 regulates the rotating speed of the motor 15 by controlling the conducting time of the driving device 131; when the through switch 12 is closed, the motor 15 is rotated at full speed.

In some embodiments, when the through switch 12 is turned off, the on-time of the bidirectional conducting device 111, and thus the on-time of the driving device 131, and thus the rotation speed of the motor 15, can be adjusted by adjusting the resistance value of the adjustable resistor 112. The motor 15 is connected to the power source 17 via the drive means 131.

In some embodiments, when the through switch 12 is closed, the bidirectional conducting device 111 and the adjustable resistor 112 are short circuited, thereby allowing the motor 15 to rotate at full speed. The motor 15 is now also connected to the power supply 17 via the drive means 131.

In the hand-held blender control circuit 100 of some embodiments of the present application, the driving device 131 is connected in series with the motor 15, the speed control circuit 11 includes the bidirectional conducting device 111 and the adjustable resistor 112 connected in series to the control electrode G of the driving device 131, the through switch 12 is connected in parallel with the bidirectional conducting device 111 and the adjustable resistor 112 connected in series, and the motor 15 is connected to the power supply 17 through the driving device 131 during both the speed control operation and the full speed operation. In some related technologies, the motor is connected to the power supply through the driving device during the speed-adjusting operation, and the motor is connected to the power supply through the strong current switch during the full-speed operation, which is relatively high in cost. The motor 15 of the present application does not need to be connected to the power supply 17 through the through switch 12, and therefore the through switch 12 can be a switching device with a small current, and therefore, the cost is low.

In this embodiment, the power supply 17 comprises an ac power supply, such as mains. The motor 15 comprises an ac motor. The first power supply connection 141 can be connected to the live line L of the power supply 17 and the second power supply connection 142 can be connected to the neutral line N of the power supply 17. The motor 15 and the drive means 131 are connected in series between the live line L and the neutral line N. In other embodiments, the power source 17 comprises a DC power source, such as a battery. The motor 15 includes a direct current motor. The first power connection 141 may be connected to the positive pole of the power source and the second power connection 142 may be connected to the negative pole of the power source 17.

In this embodiment, driver device 131 includes a thyristor SCR 1. The SCR1 can bear large current as high-power circuit element, and has low cost and high performance-to-cost ratio. In other embodiments, driver device 131 may include other circuit components besides SCR1, such as high power transistors.

In this embodiment, the bidirectional conducting device 111 is connected between the control electrode G and the adjustable resistor 112, the hand-held blender control circuit 100 includes a first capacitor C1, one end of the first capacitor C1 is connected between the first power connection terminal 141 and the first electrode T1 of the driving device 131, and the other end of the first capacitor C1 is connected between the bidirectional conducting device 111 and the adjustable resistor 112. In this embodiment, when the hand blender control circuit 100 is powered on, the first pole T1 of the driving device 131 and the gate G or the second pole T2 and the gate G may be connected. When the through switch 12 is turned off, the power supply 17 charges the first capacitor C1, and when the charging voltage of the first capacitor C1 satisfies the turn-on voltage of the bidirectional conducting device 111, the bidirectional conducting device 111 is turned on, so that a trigger current flows through the control electrode G, and the first electrode T1 and the second electrode T2 of the trigger driving device 131 are turned on, thereby energizing and rotating the motor 15. In some embodiments, the trigger current may be 10 milliamps.

In this embodiment, by adjusting the resistance value of the adjustable resistor 112, the charging time of the first capacitor C1 and the on-time of the bidirectional conducting device 111 can be adjusted, so that the rotation speed of the motor 15 can be accurately adjusted, and the circuit is simple. For example, the larger the resistance of the adjustable resistor 112 is, the longer the time required for the charging voltage of the first capacitor C1 to reach the on-voltage of the bidirectional conducting device 111 is, the shorter the on-time of the bidirectional conducting device 111 is, and further the shorter the on-time of the driving device 131 is, the slower the rotation speed of the motor 15 is; conversely, the smaller the resistance of the adjustable resistor 112, the faster the rotational speed of the motor 15.

In some embodiments, the adjustable resistance 112 comprises a potentiometer. The potentiometer is arranged on the handheld stirring machine, so that a user can manually adjust the resistance value, and further the rotating speed of the motor 15 is adjusted. The operation is more convenient.

In some embodiments, the bidirectional conducting device 111 comprises a bidirectional diode. Bidirectional diodes are relatively easy to obtain circuit devices and are relatively low in cost.

In this embodiment, when the through switch 12 is closed, the circuit branch where the through switch 12 is located short-circuits the series circuit formed by the adjustable resistor 112 and the bidirectional conducting device 111. A current path may be formed between first power supply terminal 141, first pole T1 or second pole T2 of driving device 131, control pole G of driving device 131, and second power supply terminal 142, so that a trigger current may flow through control pole G, and first pole T1 and second pole T2 of driving device 131 are turned on, and motor 15 rotates at full speed. In some embodiments, the trigger current may be 30 milliamps. Since the on current of the driving device 131 is small, the through switch 12 may include a switch with a small current, and thus, the switching cost may be reduced, thereby reducing the circuit cost.

In this embodiment, the hand-held blender control circuit 100 comprises a safety switch 16, wherein the safety switch 16 is connected in series with the driving device 131 and the motor 15 between the first power connection 141 and the second power connection 142. The safety switch 16 may control the power on and off of the hand blender control circuit 100. After the safety switch 16 is switched off, the hand-held mixer control circuit 100 is switched off, so that the motor 15 can be prevented from being abnormally started and causing accidental injury to users. The circuit security is higher. After the safety switch 16 is closed, the rotation speed of the motor 15 can be controlled by controlling the on-off of the through switch 12 or adjusting the resistance of the adjustable resistor 112.

In some embodiments, the hand blender control circuit 100 includes a current limiting resistor R1, one end of the current limiting resistor R1 is connected between the motor 15 and the second pole T2 of the drive device 131, and the other end of the current limiting resistor R1 is connected to the control pole G through the pass-through switch 12. In this way, when the through switch 12 is closed, the current limiting resistor R1 can control the magnitude of the current input to the gate G, thereby preventing the gate G from having an excessive current and the driver 131 from being burned out.

In some embodiments, the hand-held blender control circuit 100 includes a second capacitor C2, the second capacitor C2 being connected between the first pole T1 and the second pole T2 of the drive device 131. The second capacitor C2 protects the drive device 131 when the hand blender control circuit 100 is energized.

FIG. 3 is an exploded perspective view of a hand blender 200 according to one embodiment of the present application. The hand blender 200 includes a hand blender control circuit 100. In some embodiments, the hand blender 200 includes a control panel 24. At least some of the circuit components of the hand blender control circuit 100 may be located on the control board 24 and connected to the motor 15 for controlling the operation of the motor 15.

In some embodiments, the hand mixer 200 includes a first housing 211, a second housing 212, and a keypad 25, and the keypad 25 may be disposed on the first housing 211 or the second housing 212. The first case 211, the second case 212, and the key sheet 25 may enclose an accommodation space. The motor 15 and the control board 24 may be disposed in the receiving space. The key sheet 25 may be electrically connected to the control board 24, and the through switch 12 and the safety switch 16 may be provided to the key sheet 25.

In some embodiments, the hand blender 200 further includes a switch shaft 23 and an inhibitor switch 22 disposed on the first housing 211 and/or the second housing 212. The selector switch 22 is connected via a switch shaft 23 to an adjustable resistor 112 arranged on the control board 24. The user can adjust the resistance of the adjustable resistor 112 by operating the position switch 22, so as to control the rotation speed of the motor 15. The position switch 22 may comprise a rotary switch.

In some embodiments, the hand mixer 200 includes a mixing assembly 26, the mixing assembly 26 is removably coupled to the motor 15, and the hand mixer control circuit 100 controls the motor 15 to rotate at a user-defined rotational speed when the hand mixer 200 is in operation. The motor 15 rotates to drive the stirring assembly 26 to stir the food material. Specifically, the stirring head can be extended into the stirring cup 27 filled with food materials to stir the food materials, and the stirring cup 27 can be made of glass, plastic and the like. The hand mixer 200 may whip liquid, gel, or solid food materials (e.g., water, soy milk, egg white, flour, etc.).

In some embodiments of the present application, the cost of the hand mixer 200 may be low, and please refer to the description related to the control circuit 100 of the hand mixer, which is not described herein.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.

Claims (10)

1. A hand-held blender control circuit, the hand-held blender including a motor (15), the hand-held blender control circuit comprising:

a power connection (14) comprising a first power connection (141) and a second power connection (142) for connecting a power supply (17);

a drive circuit (13) comprising a drive device (131), the drive device (131) comprising a control pole, a first pole and a second pole, the drive device (131) being connected in series with the motor (15), the first pole being connected to the first power connection (141), the second pole being connected to one end of the motor (15), the other end of the motor (15) being connected to the second power connection (142);

-a speed control circuit (11) comprising a bidirectional conducting device (111) and an adjustable resistor (112) connected in series between said control electrode and said second electrode of said driving device (131);

the through switch (12) is connected with the bidirectional conducting device (111) and the adjustable resistor (112) which are connected in series in parallel, and when the through switch (12) is disconnected, the speed regulation control circuit (11) regulates the rotating speed of the motor (15) by controlling the conducting time of the driving device (131); when the through switch (12) is closed, the motor (15) is rotated at full speed.

2. A hand-held mixer control circuit as claimed in claim 1, characterised in that said bidirectional conduction device (111) is connected between said control terminal and said adjustable resistance (112), said speed control circuit (11) comprising a first capacitor, one end of said first capacitor being connected between said first power connection terminal (141) and said first terminal of said drive device (131), the other end of said first capacitor being connected between said bidirectional conduction device (111) and said adjustable resistance (112).

3. A hand-held blender control circuit as claimed in claim 1, characterised in that the adjustable resistance (112) comprises a potentiometer.

4. A hand-held blender control circuit as claimed in claim 1, characterised in that the bidirectional conduction device (111) comprises a bidirectional diode.

5. A hand-held mixer control circuit according to claim 1, characterised in that the hand-held mixer control circuit comprises a current-limiting resistor, one end of which is connected between the motor (15) and the second pole of the drive means (131), and the other end of which is connected to the control pole via the through-switch (12).

6. A hand-held mixer control circuit according to claim 1, characterised in that the hand-held mixer control circuit comprises a safety switch (16), the safety switch (16) being connected in series with the drive means (131) and the motor (15) between the first power supply connection (141) and the second power supply connection (142).

7. A hand-held mixer control circuit according to claim 1 characterised in that the hand-held mixer control circuit comprises a second capacitor connected between the first and second poles of the drive means (131).

8. A hand mixer control circuit as claimed in claim 1, in which the drive means (131) comprises a thyristor.

9. A hand-held blender, comprising:

a motor (15);

a hand-held mixer control circuit according to any one of claims 1 to 8, connected to the motor (15).

10. A hand mixer according to claim 9, characterised in that the motor (15) comprises an ac motor.

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