Hand-held mixer circuit

Abstract

The utility model discloses a handheld blender circuit, which comprises a first switch KS1, a silicon controlled rectifier Q1, a potentiometer RT, a current supplementing unit and a rectifying unit, the current supplementing unit is used for supplementing current for the silicon controlled rectifier Q1, one end of the first switch KS1 inputs commercial power, and the other end of the first switch is electrically connected with the first end of the silicon controlled rectifier Q1 and one end of the current supplementing unit respectively; the other end of the current supplementing unit is electrically connected with the second end of the silicon controlled rectifier Q1, one end of the potentiometer RT and one input end of the rectifying unit, the third end of the silicon controlled rectifier Q1 is electrically connected with the other end of the potentiometer RT, and the output end of the rectifying bridge BR1 outputs driving voltage. After the first switch KS1 is closed, current passes through the thyristor Q1 and then flows through the potentiometer RT, and then is rectified by the rectifying unit to output driving voltage to drive the motor to rotate.

Description

Technical Field

[0001] The utility model relates to the technical field of handheld blenders, in particular to a handheld blender circuit. Background Art

[0002] The existing DC handheld blenders on the market, when working at a low voltage of 100-120V, will have intermittent pauses and uneven operation due to the relatively small motor power and slow motor speed, and insufficient power supply of the thyristor. The entire handheld blender will shake, work abnormally, and have a poor hand feel. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art, and to provide a hand-held blender circuit in which the motor does not stop intermittently and operates smoothly.

[0004] According to the handheld blender circuit of the embodiment of the utility model, it includes a first switch KS1, a thyristor Q1, a potentiometer RT, a current supplement unit and a rectifier unit. The current supplement unit is used to supplement current to the thyristor Q1. One end of the first switch KS1 inputs the mains power, and the other end of the first switch is respectively electrically connected to the first end of the thyristor Q1 and one end of the current supplement unit. The other end of the current supplement unit is respectively electrically connected to the second end of the thyristor Q1, one end of the potentiometer RT and an input end of the rectifier unit. The third end of the thyristor Q1 is electrically connected to the other end of the potentiometer RT. The output end of the rectifier bridge BR1 outputs a driving voltage.

[0005] According to some embodiments of the present invention, the current compensation unit includes a capacitor C1.

[0006] According to some embodiments of the present invention, the rectifier unit includes a rectifier bridge BR1.

[0007] According to some embodiments of the present invention, a resistor R1 is further included, one end of the resistor R1 is electrically connected to the capacitor C1 , and the other end of the resistor R1 is electrically connected to the second end of the thyristor Q1 to protect the thyristor Q1 .

[0008] According to some embodiments of the present invention, a resistor R2 is further included, one end of the resistor R2 is electrically connected to one end of the potentiometer RT, and the other end of the resistor R2 is electrically connected to the input end of the rectifier bridge BR1.

[0009] According to some embodiments of the present invention, a second switch KS2 is further included, one end of the second switch KS2 is input with an external power supply, and the other end of the second switch KS2 is electrically connected to the input end of the rectifier unit.

[0010] According to some embodiments of the present invention, a capacitor C2 is further included, one end of the capacitor C2 is electrically connected to the first end of the thyristor Q1, and the other end of the capacitor C2 is electrically connected to the third end of the thyristor Q1 and the other end of the potentiometer RT respectively.

[0011] According to some embodiments of the present invention, a bidirectional diode DB1 is further included, one end of the bidirectional diode DB1 is electrically connected to the third end of the thyristor Q1, and the other end of the bidirectional diode DB1 is electrically connected to the other end of the capacitor C2 and the other end of the potentiometer RT respectively to absorb surges and provide overvoltage protection.

[0012] According to some embodiments of the present invention, a filter unit is further included, one end of which is electrically connected to the live wire and one end of the first switch KS1, and the other end of which is electrically connected to the neutral wire and another input end of the rectifier unit.

[0013] According to some embodiments of the present invention, a voltage regulator diode ZNR1 is further included which is connected in parallel with the filter unit.

[0014] The handheld blender circuit according to the embodiment of the utility model has at least the following beneficial effects: after the first switch KS1 is closed, the current flows through the thyristor Q1 and then through the potentiometer RT, and then is rectified by the rectifier unit to output the driving voltage to drive the motor to rotate. In this process, the size of the current passing through is adjusted by adjusting the size of the potentiometer RT, thereby adjusting the motor speed. When the current is small and the motor power is relatively small, the thyristor Q1 may be underpowered and the motor will intermittently pause. At this time, the current compensation unit will supply power to the thyristor Q1 to compensate for the current, avoid intermittent pauses of the motor, and thus prevent jitter. The entire circuit structure is simple and easy to implement.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings;

[0017] Figure 1 is the circuit schematic of the hand blender circuit. DETAILED DESCRIPTION

[0018] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0019] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0021] Reference Figure 1 The utility model discloses a hand-held blender circuit, including a first switch KS1, a thyristor Q1, a potentiometer RT, a current supplement unit and a rectifier unit. The current supplement unit is used to supplement current to the thyristor Q1. One end of the first switch KS1 inputs the mains electricity, and the other end of the first switch is respectively electrically connected to the first end of the thyristor Q1 and one end of the current supplement unit. The other end of the current supplement unit is respectively electrically connected to the second end of the thyristor Q1, one end of the potentiometer RT and an input end of the rectifier unit. The third end of the thyristor Q1 is electrically connected to the other end of the potentiometer RT, and the output end of the rectifier bridge BR1 outputs the driving voltage. After the first switch KS1 is closed, the current flows through the potentiometer RT after passing through the thyristor Q1, and then is rectified by the rectifier unit to output the driving voltage to drive the motor to rotate. In this process, the size of the current passing through is adjusted by adjusting the size of the potentiometer RT, thereby adjusting the motor speed. When the current is small and the motor power is small, the thyristor Q1 may not be able to supply enough power, and the motor will stop intermittently. At this time, the current compensation unit will supply power to the thyristor Q1 to compensate the current, avoid intermittent stop of the motor, and thus prevent jitter. The whole circuit structure is simple and easy to implement.

[0022] Further, such as Figure 1 The current supplement unit includes a capacitor C1. The capacitor C1 can supplement current to the thyristor Q1 by charging and discharging. The structure is simple and easy to implement.

[0023] The rectifier unit includes a rectifier bridge BR1, and also includes a resistor R1 and a resistor R2. One end of the resistor R1 is electrically connected to the capacitor C1, and the other end of the resistor R1 is electrically connected to the second end of the thyristor Q1 to protect the thyristor Q1. One end of the resistor R2 is electrically connected to one end of the potentiometer RT, and the other end of the resistor R2 is electrically connected to the input end of the rectifier bridge BR1. When the gear position of the potentiometer RT is too low, the resistor R2 can prevent its circuit from short-circuiting.

[0024] It also includes a second switch KS2, one end of which is input with an external power supply, and the other end of the second switch KS2 is electrically connected to the input end of the rectifier unit. The switch KS2 can be directly closed, and the AC power is directly rectified and output through the rectifier bridge BR1, which meets the usage situation where the gear position does not need to be adjusted; when the gear position needs to be adjusted, the switch KS2 is disconnected, the switch KS1 is closed, and the gear position can be adjusted through the potentiometer RT.

[0025] Furthermore, it also includes a capacitor C2, one end of which is electrically connected to the first end of the thyristor Q1, and the other end of the capacitor C2 is electrically connected to the third end of the thyristor Q1 and the other end of the potentiometer RT respectively, so as to limit the excessive voltage rise in the circuit and protect the thyristor Q1.

[0026] Furthermore, it also includes a bidirectional diode DB1, one end of the bidirectional diode DB1 is electrically connected to the third end of the thyristor Q1, and the other end of the bidirectional diode DB1 is respectively electrically connected to the other end of the capacitor C2 and the other end of the potentiometer RT to absorb surges and provide overvoltage protection.

[0027] Furthermore, it also includes a filtering unit, one end of which is electrically connected to the live wire and one end of the first switch KS1 respectively, and the other end of the filtering unit is electrically connected to the neutral wire and another input end of the rectifying unit respectively, and the filtering unit includes a resistor R3 and a capacitor C3 connected in parallel.

[0028] Furthermore, it also includes a voltage stabilizing diode ZNR1 connected in parallel with the filter unit to achieve a voltage stabilizing effect.

[0029] It is easy for those skilled in the art to understand that the above preferred embodiments can be freely combined and superimposed without conflict.

[0030] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention specification and drawings under the utility model concept, or directly or indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A handheld blender circuit, characterized in that: include: A first switch KS1, a thyristor Q1, a potentiometer RT, a current supplement unit and a rectifier unit, wherein the current supplement unit is used to supplement current to the thyristor Q1, one end of the first switch KS1 inputs AC power, the other end of the first switch is respectively electrically connected to the first end of the thyristor Q1 and one end of the current supplement unit, the other end of the current supplement unit is respectively electrically connected to the second end of the thyristor Q1, one end of the potentiometer RT and an input end of the rectifier unit, the third end of the thyristor Q1 is electrically connected to the other end of the potentiometer RT, and the output end of the rectifier unit outputs a driving voltage.

2. The hand-held blender circuit according to claim 1, characterized in that: The current compensation unit includes a capacitor C1.

3. The hand-held blender circuit according to claim 2, characterized in that: The rectifying unit comprises a rectifying bridge BR1.

4. The hand-held blender circuit according to claim 3, characterized in that: A resistor R1 is also included. One end of the resistor R1 is electrically connected to the capacitor C1 , and the other end of the resistor R1 is electrically connected to the second end of the thyristor Q1 to protect the thyristor Q1 .

5. The hand blender circuit according to claim 4, characterized in that: A resistor R2 is also included, one end of the resistor R2 is electrically connected to one end of the potentiometer RT, and the other end of the resistor R2 is electrically connected to the input end of the rectifier bridge BR1.

6. The hand blender circuit according to claim 1, characterized in that: It also includes a second switch KS2, one end of which is input with an external power supply, and the other end of the second switch KS2 is electrically connected with the input end of the rectifying unit.

7. The hand blender circuit according to claim 1, characterized in that: It also includes a capacitor C2, one end of which is electrically connected to the first end of the thyristor Q1, and the other end of the capacitor C2 is electrically connected to the third end of the thyristor Q1 and the other end of the potentiometer RT respectively.

8. The hand blender circuit according to claim 7, characterized in that: It also includes a bidirectional diode DB1, one end of which is electrically connected to the third end of the thyristor Q1, and the other end of the bidirectional diode DB1 is electrically connected to the other end of the capacitor C2 and the other end of the potentiometer RT to absorb surges and provide overvoltage protection.

9. The hand blender circuit according to claim 1, characterized in that: It also includes a filter unit, one end of which is electrically connected to the live wire and one end of the first switch KS1, and the other end of which is electrically connected to the neutral wire and the other input end of the rectifier unit.

10. The hand blender circuit according to claim 9, characterized in that: It also includes a voltage stabilizing diode ZNR1 connected in parallel with the filtering unit.

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