CN106685282B - Electric appliance and motor speed regulating device thereof - Google Patents
Electric appliance and motor speed regulating device thereof Download PDFInfo
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- CN106685282B CN106685282B CN201510751383.0A CN201510751383A CN106685282B CN 106685282 B CN106685282 B CN 106685282B CN 201510751383 A CN201510751383 A CN 201510751383A CN 106685282 B CN106685282 B CN 106685282B
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 89
- 230000001276 controlling effect Effects 0.000 claims abstract description 14
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 51
- 229910052710 silicon Inorganic materials 0.000 claims description 51
- 239000010703 silicon Substances 0.000 claims description 51
- 239000003990 capacitor Substances 0.000 claims description 29
- 230000002457 bidirectional effect Effects 0.000 claims description 19
- 230000008859 change Effects 0.000 claims description 15
- 230000000694 effects Effects 0.000 description 4
- 230000001960 triggered effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Abstract
The invention discloses an electric appliance and a motor speed regulating device thereof, wherein the device comprises: a power supply circuit for supplying power to a motor of the electric appliance; the speed regulating circuit is connected between the power supply circuit and the motor and used for controlling the rotating speed of the motor; a first switch arranged in the speed regulating circuit; a second switch arranged in the speed regulating circuit; the speed regulating circuit is used for carrying out mode switching according to the on-off states of the first switch and the second switch, when the first switch is in an on state and the second switch is in an off state, the speed regulating circuit controls the motor in a full-speed mode so that the motor runs at a first rotation speed, and when the second switch is in an on state and the first switch is in an off state, the speed regulating circuit controls the motor in a stepless speed regulating mode so that the rotation speed of the motor continuously changes according to an input instruction. Therefore, the rotating speed of the motor can be controlled in two different modes, the motor can directly rotate at a first rotating speed in a full-speed mode, the stepless speed regulating effect can be achieved in a stepless speed regulating mode, and different requirements of users are met.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a motor speed regulating device of an electric appliance and the electric appliance.
Background
In general, the motor rotation speed of the electric appliance such as a stirrer, a juice extractor, etc. needs to be controlled according to the actual use condition, and in the case of a stirrer, the stirring speed, that is, the motor rotation speed, should be selected according to the object to be stirred. In the related art, a multi-gear speed regulating switch is adopted to realize the rotation speed regulation, but the motor has the defect that the motor can only run at any gear of the set multi-gear rotation speed, the adjustable rotation speed is less, and the requirement of a user cannot be met.
Accordingly, improvements are needed in the related art.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent. Therefore, an object of the present invention is to provide a motor speed regulating device for an electric appliance, which can control the rotation speed in different modes, and can steplessly regulate the rotation speed of the motor to continuously and uniformly change the rotation speed.
Another object of the present invention is to provide an electric appliance.
According to an embodiment of the present invention, a motor speed regulating device for an electric appliance includes: a power supply circuit to supply power to a motor of the electric appliance; the speed regulating circuit is connected between the power supply circuit and the motor and is used for controlling the rotating speed of the motor; a first switch disposed in the speed regulating circuit; a second switch arranged in the speed regulating circuit; the speed regulating circuit is used for carrying out mode switching according to the on-off states of the first switch and the second switch, when the first switch is in an on state and the second switch is in an off state, the speed regulating circuit is used for controlling the motor in a full-speed mode so as to enable the motor to run at a first rotating speed, and when the second switch is in an on state and the first switch is in an off state, the speed regulating circuit is used for controlling the motor in a stepless speed regulating mode so as to enable the rotating speed of the motor to continuously change according to an input instruction.
According to the motor speed regulating device of the electric appliance, the speed regulating circuit is used for carrying out mode switching according to the on-off states of the first switch and the second switch, when the first switch is in the on state and the second switch is in the off state, the speed regulating circuit controls the motor in a full-speed mode to enable the motor to run at the first rotating speed, and when the second switch is in the on state and the first switch is in the off state, the speed regulating circuit controls the motor in a stepless speed regulating mode to enable the rotating speed of the motor to continuously change according to an input command. Therefore, the device can control the rotating speed of the motor in two different modes, can directly control the motor to rotate at the first rotating speed in a full-speed mode, is not required to be realized through rotating speed adjustment, is convenient and fast, and can control the continuous and uniform change of the rotating speed of the motor in a stepless speed regulation mode so as to achieve the stepless speed regulation effect, meet the different rotating speed demands of users and improve the experience of the users.
According to some embodiments of the invention, the speed regulating circuit comprises: a silicon controlled rectifier; the control unit is connected with the controllable silicon and is used for controlling the conduction angle of the controllable silicon so as to control the rotating speed of the motor.
According to a specific embodiment of the present invention, the power supply circuit has a first output terminal and a second output terminal, the first output terminal of the power supply circuit is connected to one end of the silicon controlled rectifier, the other end of the silicon controlled rectifier is connected to one end of the motor, and the second output terminal of the power supply circuit is connected to the other end of the motor, wherein the control unit includes: one end of the first capacitor is connected with one end of the controllable silicon; the control end of the adjustable resistor is connected with one end of the adjustable resistor, and a first node is arranged between the adjustable resistor and the first capacitor; one end of the first resistor is connected with the other end of the second switch, the other end of the first resistor is connected with the other end of the controllable silicon, a second node is arranged between the first resistor and the second switch, one end of the first switch is connected with the first node, and the other end of the first switch is connected with the second node; and one end of the bidirectional diode is connected with the first node, and the other end of the bidirectional diode is connected with the control end of the controllable silicon.
According to another embodiment of the present invention, the power supply circuit has a first output terminal and a second output terminal, the first output terminal of the power supply circuit is connected to one end of the thyristor, one end of the second switch is connected to the other end of the thyristor, the other end of the second switch is connected to one end of the motor, the second output terminal of the power supply circuit is connected to the other end of the motor, one end of the first switch is connected to one end of the thyristor, and the other end of the first switch is connected to the other end of the second switch, wherein the control unit includes: one end of the first capacitor is connected with one end of the controllable silicon; one end of the adjustable resistor is connected with the other end of the first capacitor, the control end of the adjustable resistor is connected with one end of the adjustable resistor, and a first node is arranged between the adjustable resistor and the first capacitor; one end of the first resistor is connected with the other end of the adjustable resistor, and the other end of the first resistor is connected with the other end of the controllable silicon; and one end of the bidirectional diode is connected with the first node, and the other end of the bidirectional diode is connected with the control end of the controllable silicon.
According to some embodiments of the invention, the motor speed regulating device of the electric appliance further comprises: the first inductor is connected in series with one end of the motor; and the second inductor is connected in series with the other end of the motor.
According to some embodiments of the invention, when the motor is a dc motor, the motor speed regulating device further includes a rectifying circuit that converts the ac power output by the speed regulating circuit into dc power.
According to some embodiments of the invention, the power supply circuit comprises: a first power input and a second power input; the fuse is connected with the first power input end at one end; one end of the piezoresistor is connected with the other end of the fuse, and the other end of the piezoresistor is connected with the second power input end; and one end of the second resistor is connected with one end of the piezoresistor to serve as a first output end of the power supply circuit, and the other end of the second resistor is connected with the other end of the piezoresistor to serve as a second output end of the power supply circuit.
According to some embodiments of the invention, the power supply circuit further comprises: and the second capacitor is connected with the piezoresistor in parallel.
According to another embodiment of the invention, an electric appliance comprises a motor speed regulating device of the electric appliance.
According to the electric appliance provided by the embodiment of the invention, through the motor speed regulating device, the rotating speed of the motor can be controlled in two different modes, the motor can be directly controlled to rotate at the first rotating speed in the full-speed mode, the motor is not required to be regulated by the rotating speed, the electric appliance is convenient and quick, and in the stepless speed regulating mode, the rotating speed of the motor can be controlled to continuously and uniformly change so as to achieve the stepless speed regulating effect, the different rotating speed requirements of users are met, and the user experience is improved.
According to some embodiments of the invention, the electric appliance is a blender.
Drawings
FIG. 1 is a block schematic diagram of a motor governor of an electric appliance according to an embodiment of the present invention;
fig. 2 is a circuit principle of a motor speed regulating device of the electric appliance according to an embodiment of the present invention;
fig. 3 is a circuit principle of a motor speed regulating device of an electric appliance according to another embodiment of the present invention;
fig. 4 is a circuit principle of a motor speed regulating device of an electric appliance according to still another embodiment of the present invention;
fig. 5 is a circuit principle of a motor speed regulating device of an electric appliance according to still another embodiment of the present invention;
reference numerals:
the power supply circuit 10, the speed regulating circuit 20, the first switch K1, the second switch K2 and the motor 30;
the device comprises a silicon controlled rectifier SCR, a first capacitor C1, an adjustable resistor VR, a first resistor R1 and a bidirectional diode D1;
the rectifier circuit 40, the first inductor L1, the second inductor L2, the first power input terminal CN1, the second power input terminal CN2, the fuse F1, the varistor RZ, the second resistor R2 and the second capacitor C2.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
A motor speed regulating device of an electric appliance and an electric appliance having the same according to an embodiment of the present invention will be described below with reference to the accompanying drawings.
Fig. 1 is a block schematic diagram of a motor governor of an electric appliance according to an embodiment of the present invention. As shown in fig. 1, the motor speed regulating device of the electric appliance includes: a power supply circuit 10, a speed regulating circuit 20, a first switch K1 and a second switch K2.
Wherein the power supply circuit 10 is used for supplying power to a motor 30 of the electric appliance; the speed regulating circuit 20 is connected between the power supply circuit 10 and the motor 30, and the speed regulating circuit 20 is used for controlling the rotating speed of the motor 30; the first switch K1 is provided in the speed regulating circuit 20; the second switch K2 is provided in the speed regulating circuit.
The speed regulating circuit 20 performs mode switching according to the on-off states of the first switch K1 and the second switch K2, when the first switch K1 is in an on state and the second switch K2 is in an off state, the speed regulating circuit 20 controls the motor 30 in a full speed mode to make the motor 30 operate at a first rotation speed, and when the second switch K2 is in an on state and the first switch K1 is in an off state, the speed regulating circuit 20 controls the motor 30 in a stepless speed regulating mode to make the rotation speed of the motor 30 continuously change according to an input command.
It should be noted that, in one example of the present invention, the first rotation speed may be the maximum rotation speed that the motor 30 can reach. The first switch K1 and the second switch K2 may be push switches, and the respective modes may be selected by triggering the push switches. In addition, in the stepless speed regulation mode, the rotation speed can be regulated through the speed regulation switch, and a user can input a command through the speed regulation switch, so that the speed regulation circuit 20 can control the continuous and uniform change of the rotation speed of the motor in the adjustable range, and the stepless speed regulation effect is achieved.
Therefore, the motor speed regulating device of the electric appliance can control the rotating speed of the motor in two different modes, can directly control the motor to rotate at the first rotating speed in a full-speed mode, is realized without rotating speed regulation, is convenient and quick, and can control the rotating speed of the motor to continuously and uniformly change in a stepless speed regulating mode so as to achieve the stepless speed regulating effect, meet different rotating speed requirements of users and improve the experience of the users.
The specific circuit configuration of the speed adjusting circuit 20 and the operation principle thereof according to the embodiment of the present invention are described below.
According to some embodiments of the present invention, as shown in fig. 2 and 3, the speed regulating circuit 20 includes: a silicon controlled rectifier SCR and a control unit. The control unit is connected to the SCR, and is configured to control a conduction angle of the SCR to control a rotation speed of the motor 30.
Specifically, the power provided by the power supply circuit 10 is provided to the motor 30 through the speed regulating circuit 20, wherein the power can be provided to the motor 30 through the speed regulating circuit 20, or the control unit can control the conduction angle of the silicon controlled rectifier SCR according to the instruction input by the user, and the power is provided to the motor 30 after being chopped through the silicon controlled rectifier SCR, so that the magnitude of the conduction angle determines the magnitude of the motor rotating speed.
The conduction angle may refer to an angle from a zero crossing point to when the SCR is triggered to conduct.
According to an embodiment of the present invention, as shown in fig. 2, the power supply circuit 10 has a first output terminal and a second output terminal, the first output terminal of the power supply circuit 10 is connected to one end of the SCR, the other end of the SCR is connected to one end of the motor 30, and the second output terminal of the power supply circuit 10 is connected to the other end of the motor 30.
Wherein the control unit includes: the adjustable resistor VR comprises a first capacitor C1, an adjustable resistor VR, a first resistor R1 and a bidirectional diode D1. Specifically, one end of the first capacitor C1 is connected with one end of the silicon controlled rectifier SCR; one end of an adjustable resistor VR is connected with the other end of the first capacitor C1, the other end of the adjustable resistor VR is connected with one end of the second switch K2, a control end of the adjustable resistor VR is connected with one end of the adjustable resistor VR, and a first node is arranged between the adjustable resistor VR and the first capacitor C1; one end of a first resistor R1 is connected with the other end of a second switch K2, the other end of the first resistor R1 is connected with the other end of a silicon controlled rectifier SCR, a second node is arranged between the first resistor R1 and the second switch K2, one end of the first switch K1 is connected with the first node, and the other end of the first switch K1 is connected with the second node; one end of the bidirectional diode D1 is connected with the first node, and the other end of the bidirectional diode D1 is connected with the control end of the silicon controlled rectifier SCR.
It should be noted that, in the example of fig. 2, the first resistor R1 may be an anti-interference resistor with a small resistance value, the SCR may be a triac SCR, and the motor 30 may be an ac motor.
When the first switch K1 is controlled to be turned on and the second switch K2 is controlled to be turned off, the RC time constant of the first resistor R1 and the first capacitor C1 is small because the resistance value of the first resistor R1 is small, the SCR can be regarded as being completely turned on, i.e. turned on at the zero crossing point, which is equivalent to a short circuit, the ac power output by the power supply circuit 10 is supplied to the ac motor without being chopped by the SCR, and the motor is rotated at full speed, i.e. the first rotational speed is the maximum rotational speed of the motor 30.
When the second switch K2 is controlled to be turned on and the first switch K1 is controlled to be turned off, the ac power output by the power supply circuit 10 chops the SCR and provides the SCR to the ac motor to rotate the motor, wherein the conduction angle of the SCR is determined by the actual resistance of the adjustable resistor VR, that is, the rotation speed of the motor is determined by the actual resistance of the adjustable resistor VR. When the resistance value of the adjustable resistor VR is increased by adjusting the resistor VR, the larger the conduction angle of the silicon controlled rectifier SCR, namely the angle between the zero crossing point and the time when the silicon controlled rectifier SCR is triggered to be conducted, the smaller the electric energy which can be provided for the motor 30, the smaller the rotating speed of the motor 30; when the resistance of the adjustable resistor VR is adjusted to be reduced, the smaller the conduction angle of the SCR, the more power can be supplied to the motor 30, and the higher the rotation speed of the motor 30. In the adjusting process, the resistance value of the adjustable resistor VR is changed uniformly, so that the change of the motor speed can be also uniform, and the stepless speed regulating effect of the motor is achieved.
Therefore, the two modes are arranged, one mode is used for stepless speed regulation of the motor, and the other mode can directly control the motor to rotate at the maximum rotation speed, so that the motor is convenient for a user to use.
According to another embodiment of the present invention, as shown in fig. 3, the power supply circuit 10 has a first output terminal and a second output terminal, the first output terminal of the power supply circuit 10 is connected to one end of the SCR, one end of the second switch K2 is connected to the other end of the SCR, the other end of the second switch K2 is connected to one end of the motor 30, the second output terminal of the power supply circuit 10 is connected to the other end of the motor 30, one end of the first switch K1 is connected to one end of the SCR, and the other end of the first switch K1 is connected to the other end of the second switch K2.
Wherein the control unit includes: the adjustable resistor VR comprises a first capacitor C1, an adjustable resistor VR, a first resistor R1 and a bidirectional diode D1. One end of the first capacitor C1 is connected with one end of the silicon controlled rectifier SCR; one end of the adjustable resistor VR is connected with the other end of the first capacitor C1, the control end of the adjustable resistor VR is connected with one end of the adjustable resistor VR, and a first node is arranged between the adjustable resistor VR and the first capacitor C1; one end of the first resistor R1 is connected with the other end of the adjustable resistor VR, and the other end of the first resistor R1 is connected with the other end of the silicon controlled rectifier SCR; one end of the bidirectional diode D1 is connected with the first node, and the other end of the bidirectional diode D1 is connected with the control end of the silicon controlled rectifier SCR.
Specifically, when the first switch K1 is controlled to be turned on and the second switch K2 is controlled to be turned off, the ac power output by the power supply circuit 10 is directly supplied to the ac motor without passing through the SCR, and the motor rotates at full speed, that is, the first rotational speed is the maximum rotational speed of the motor 30.
When the second switch K2 is controlled to be turned on and the first switch K1 is controlled to be turned off, the ac power output by the power supply circuit 10 chops the SCR and provides the SCR to the ac motor to rotate the motor, wherein the conduction angle of the SCR is determined by the actual resistance of the adjustable resistor VR, that is, the rotation speed of the motor 30 is determined by the actual resistance of the adjustable resistor VR. When the resistance value of the adjustable resistor VR is increased by adjusting the resistor VR, the larger the conduction angle of the silicon controlled rectifier SCR, namely the angle between the zero crossing point and the time when the silicon controlled rectifier SCR is triggered to be conducted, the smaller the electric energy which can be provided for the motor 30, the smaller the rotating speed of the motor 30; when the resistance of the adjustable resistor VR is adjusted to be reduced, the smaller the conduction angle of the SCR, the more power can be supplied to the motor 30, and the higher the rotation speed of the motor 30. In the adjusting process, the resistance value of the adjustable resistor VR is changed uniformly, so that the change of the motor speed can be also uniform, and the stepless speed regulating effect of the motor is achieved.
Thus, the positions of the first switch K1 and the second switch K2 in the example of fig. 3 are changed with respect to the example of fig. 2, and the rest are substantially identical. In the example of fig. 3, the positions of the first switch K1 and the second switch K2 are set more skillfully, so that the effect that the SCR short-circuit motor cannot rotate even if the SCR short-circuit motor is achieved, and the safety and reliability of the whole machine are improved. And in addition, two modes are arranged, one mode is used for stepless speed regulation of the motor, and the other mode can directly control the motor to rotate at the maximum rotation speed, so that the motor is convenient for a user to use.
In addition, according to the examples of fig. 4-5, when the motor 30 is a dc motor, the motor speed regulating device further includes a rectifying circuit 40, and the rectifying circuit 40 is configured to convert the ac power output from the speed regulating circuit 20 into dc power.
Specifically, as shown in fig. 4, a first input terminal of the rectifying circuit 40 is connected to the other end of the SCR, a first output terminal of the rectifying circuit 40 is connected to one end of the motor 30, a second input terminal of the rectifying circuit 40 is connected to a second output terminal of the power supply circuit 10, and a second output terminal of the rectifying circuit 40 is connected to the other end of the motor 30. Thus, when the first switch K1 is controlled to be turned on and the second switch K2 is controlled to be turned off, the alternating current output by the power supply circuit 10 is not chopped by the silicon controlled rectifier SCR, and is rectified by the rectifying circuit 40 to be supplied to the direct current motor; when the second switch K2 is controlled to be turned on and the first switch K1 is controlled to be turned off, the ac power output by the power supply circuit 10 chops the SCR and provides the SCR to the rectifying circuit 40, and the rectifying circuit 40 rectifies the SCR and provides the SCR to the dc motor to rotate the motor.
Specifically, as shown in fig. 5, a first input terminal of the rectifying circuit 40 is connected to the other end of the first switch K1 and the other end of the second switch K2, respectively, a first output terminal of the rectifying circuit 40 is connected to one end of the motor 30, a second input terminal of the rectifying circuit 40 is connected to a second output terminal of the power supply circuit 10, and a second output terminal of the rectifying circuit 40 is connected to the other end of the motor 30. Thus, when the first switch K1 is controlled to be turned on and the second switch K2 is controlled to be turned off, the alternating current output by the power supply circuit 10 is directly rectified by the rectifying circuit 40 without passing through the silicon controlled rectifier SCR and is supplied to the direct current motor; when the second switch K2 is controlled to be turned on and the first switch K1 is controlled to be turned off, the ac power output by the power supply circuit 10 chops the SCR and provides the SCR to the rectifying circuit 40, and the rectifying circuit 40 rectifies the SCR and provides the SCR to the dc motor to rotate the motor.
According to an example of the present invention, the rectifying circuit 40 may be a rectifying bridge formed of four diodes, and the actual application is generally selected according to the load current, so that the current that can pass through the rectifying bridge is larger.
Further, as shown in fig. 2 to 5, the motor speed adjusting device further includes: a first inductance L1 and a second inductance L2. Wherein, the first inductor L1 is connected in series with one end of the motor 30; the second inductor L2 is connected in series with the other end of the motor 30. Specifically, as in the example of fig. 2, a first inductance L1 is connected between the other end of the thyristor SCR and one end of the motor 30, and a second inductance L2 is connected between the second output terminal of the power supply circuit 10 and the other end of the motor 30; as in the example of fig. 3, the first inductor L1 is connected between the other end of the second switch K2 and one end of the motor 30, and the second inductor L2 is connected between the second output terminal of the power supply circuit 10 and the other end of the motor 30; as in the example of fig. 4-5, a first inductance L1 is connected between the first output terminal of the rectifying circuit 40 and one end of the motor 30, and a second inductance L2 is connected between the second output terminal of the rectifying circuit 40 of the power supply circuit 10 and the other end of the motor 30.
The first inductor L1 and the second inductor L2 were used for EMC (electromagnetic compatibility ) experiments to reduce EMC interference.
In addition, as shown in fig. 2 to 5, the power supply circuit 10 includes: the first power input terminal CN1, the second power input terminal CN2, the fuse F1, the piezoresistor RZ and the second resistor R2.
One end of the fuse F1 is connected with the first power input end CN 1; one end of the piezoresistor RZ is connected with the other end of the fuse F1, and the other end of the piezoresistor RZ is connected with the second power input end CN 2; one end of the second resistor R2 is connected to one end of the varistor RZ to be used as a first output end of the power supply circuit 10, and the other end of the second resistor R2 is connected to the other end of the varistor RZ to be used as a second output end of the power supply circuit 10.
It should be noted that, the first power input end CN1 and the second power input end CN2 may be connected to a mains supply, the first power input end CN1 may be a live wire L, and the second power input end CN2 may be a zero wire N. The fuse F1 and the varistor RZ mainly play a protective role in the device.
Further, as shown in fig. 2 to 5, the power supply circuit 10 further includes: and a second capacitor C2, wherein the second capacitor C2 is connected in parallel with the varistor RZ. It should be noted that, the second capacitor C2 is used for passing the EMC experiment to reduce EMC interference.
In summary, according to the motor speed regulating device of the electric appliance provided by the embodiment of the invention, the speed regulating circuit performs mode switching according to the on-off states of the first switch and the second switch, when the first switch is in the on state and the second switch is in the off state, the speed regulating circuit controls the motor in a full-speed mode to enable the motor to run at the first speed, and when the second switch is in the on state and the first switch is in the off state, the speed regulating circuit controls the motor in a stepless speed regulating mode to enable the speed of the motor to continuously change according to the input command. Therefore, the device can control the rotating speed of the motor in two different modes, can directly control the motor to rotate at the first rotating speed in a full-speed mode, is not required to be realized through rotating speed adjustment, is convenient and fast, and can control the continuous and uniform change of the rotating speed of the motor in a stepless speed regulation mode so as to achieve the stepless speed regulation effect, meet the different rotating speed demands of users and improve the experience of the users.
Finally, the embodiment of the invention also provides an electric appliance, which comprises the motor speed regulating device of the electric appliance.
According to a specific example of the present invention, the electric appliance may be a blender.
According to the electric appliance provided by the embodiment of the invention, through the motor speed regulating device, the rotating speed of the motor can be controlled in two different modes, the motor can be directly controlled to rotate at the first rotating speed in the full-speed mode, the motor is not required to be regulated by the rotating speed, the electric appliance is convenient and quick, and in the stepless speed regulating mode, the rotating speed of the motor can be controlled to continuously and uniformly change so as to achieve the stepless speed regulating effect, the different rotating speed requirements of users are met, and the user experience is improved.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (12)
1. A motor speed regulating device of an electric appliance, comprising:
a power supply circuit to supply power to a motor of the electric appliance;
the speed regulating circuit is connected between the power supply circuit and the motor and is used for controlling the rotating speed of the motor;
a first switch disposed in the speed regulating circuit;
a second switch arranged in the speed regulating circuit;
the speed regulating circuit is used for carrying out mode switching according to the on-off states of the first switch and the second switch, controlling the motor to operate at a first rotating speed in a full-speed mode when the first switch is in an on state and the second switch is in an off state, and controlling the motor to continuously change the rotating speed of the motor according to an input instruction in a stepless speed regulating mode when the second switch is in an on state and the first switch is in an off state;
the speed regulating circuit comprises:
the controllable silicon is bidirectional controllable silicon;
the control unit is connected with the controllable silicon and is used for controlling the conduction angle of the controllable silicon so as to control the rotating speed of the motor;
the power supply circuit has first output and second output, the first output of power supply circuit with the one end of silicon controlled rectifier links to each other, the other end of silicon controlled rectifier with the one end of motor links to each other, the second output of power supply circuit with the other end of motor links to each other, wherein, the control unit includes:
one end of the first capacitor is connected with one end of the controllable silicon;
the control end of the adjustable resistor is connected with one end of the adjustable resistor, and a first node is arranged between the adjustable resistor and the first capacitor;
one end of the first resistor is connected with the other end of the second switch, the other end of the first resistor is connected with the other end of the controllable silicon, a second node is arranged between the first resistor and the second switch, one end of the first switch is connected with the first node, and the other end of the first switch is connected with the second node;
and one end of the bidirectional diode is connected with the first node, and the other end of the bidirectional diode is connected with the control end of the controllable silicon.
2. The motor governor of an electric appliance of claim 1, further comprising:
the first inductor is connected in series with one end of the motor;
and the second inductor is connected in series with the other end of the motor.
3. The motor speed adjusting device of an electric appliance according to claim 2, wherein when the motor is a direct current motor, the motor speed adjusting device further comprises a rectifying circuit converting alternating current outputted from the speed adjusting circuit into direct current.
4. The motor speed regulator of the electric appliance according to claim 1, wherein the power supply circuit includes:
a first power input and a second power input;
the fuse is connected with the first power input end at one end;
one end of the piezoresistor is connected with the other end of the fuse, and the other end of the piezoresistor is connected with the second power input end;
and one end of the second resistor is connected with one end of the piezoresistor to serve as a first output end of the power supply circuit, and the other end of the second resistor is connected with the other end of the piezoresistor to serve as a second output end of the power supply circuit.
5. The motor governor of an electrical appliance of claim 4, wherein the power supply circuit further comprises:
and the second capacitor is connected with the piezoresistor in parallel.
6. A motor speed regulating device of an electric appliance, comprising:
a power supply circuit to supply power to a motor of the electric appliance;
the speed regulating circuit is connected between the power supply circuit and the motor and is used for controlling the rotating speed of the motor;
a first switch disposed in the speed regulating circuit;
a second switch arranged in the speed regulating circuit;
the speed regulating circuit is used for carrying out mode switching according to the on-off states of the first switch and the second switch, controlling the motor to operate at a first rotating speed in a full-speed mode when the first switch is in an on state and the second switch is in an off state, and controlling the motor to continuously change the rotating speed of the motor according to an input instruction in a stepless speed regulating mode when the second switch is in an on state and the first switch is in an off state;
the speed regulating circuit comprises:
the controllable silicon is bidirectional controllable silicon;
the control unit is connected with the controllable silicon and is used for controlling the conduction angle of the controllable silicon so as to control the rotating speed of the motor;
the power supply circuit has first output and second output, the first output of power supply circuit with the one end of silicon controlled rectifier links to each other, the other end of silicon controlled rectifier with the one end of motor links to each other, the second output of power supply circuit with the other end of motor links to each other, wherein, the control unit includes:
one end of the first capacitor is connected with one end of the controllable silicon;
the control end of the adjustable resistor is connected with one end of the adjustable resistor, and a first node is arranged between the adjustable resistor and the first capacitor;
one end of the first resistor is connected with the other end of the second switch, the other end of the first resistor is connected with the other end of the controllable silicon, a second node is arranged between the first resistor and the second switch, one end of the first switch is connected with the first node, and the other end of the first switch is connected with the second node;
one end of the bidirectional diode is connected with the first node, and the other end of the bidirectional diode is connected with the control end of the controllable silicon;
the power supply circuit has first output and second output, the first output of power supply circuit with the one end of silicon controlled rectifier links to each other, the one end of second switch with the other end of silicon controlled rectifier links to each other, the other end of second switch with the one end of motor links to each other, the second output of power supply circuit with the other end of motor links to each other, the one end of first switch with the one end of silicon controlled rectifier links to each other, the other end of first switch with the other end of second switch links to each other, wherein, the control unit includes:
one end of the first capacitor is connected with one end of the controllable silicon;
one end of the adjustable resistor is connected with the other end of the first capacitor, the control end of the adjustable resistor is connected with one end of the adjustable resistor, and a first node is arranged between the adjustable resistor and the first capacitor;
one end of the first resistor is connected with the other end of the adjustable resistor, and the other end of the first resistor is connected with the other end of the controllable silicon;
and one end of the bidirectional diode is connected with the first node, and the other end of the bidirectional diode is connected with the control end of the controllable silicon.
7. The motor governor of an electrical appliance of claim 6, further comprising:
the first inductor is connected in series with one end of the motor;
and the second inductor is connected in series with the other end of the motor.
8. The motor speed regulator of the electric appliance according to claim 7, wherein when the motor is a direct current motor, the motor speed regulator further comprises a rectifying circuit converting alternating current outputted from the speed regulating circuit into direct current.
9. The motor governor of an electric appliance of claim 6, wherein the power supply circuit comprises:
a first power input and a second power input;
the fuse is connected with the first power input end at one end;
one end of the piezoresistor is connected with the other end of the fuse, and the other end of the piezoresistor is connected with the second power input end;
and one end of the second resistor is connected with one end of the piezoresistor to serve as a first output end of the power supply circuit, and the other end of the second resistor is connected with the other end of the piezoresistor to serve as a second output end of the power supply circuit.
10. The motor speed regulator of the electric appliance according to claim 9, wherein the power supply circuit further includes:
and the second capacitor is connected with the piezoresistor in parallel.
11. An electric appliance comprising a motor governor device of any of claims 1-5 or of any of claims 6-10.
12. The electrical appliance of claim 11, wherein the electrical appliance is a blender.
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| CN201510751383.0A CN106685282B (en) | 2015-11-05 | 2015-11-05 | Electric appliance and motor speed regulating device thereof |
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| CN201510751383.0A CN106685282B (en) | 2015-11-05 | 2015-11-05 | Electric appliance and motor speed regulating device thereof |
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| CN106685282B true CN106685282B (en) | 2024-01-05 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108011492A (en) * | 2017-11-01 | 2018-05-08 | 山东洁盟节能环保技术有限公司 | A kind of permanent-magnet speed governor of fixed magnetic gap |
| CN107863870A (en) * | 2017-11-01 | 2018-03-30 | 山东洁盟节能环保技术有限公司 | A kind of permanent-magnet speed governor of fixed magnetic gap |
| CN107888049A (en) * | 2017-11-01 | 2018-04-06 | 山东洁盟节能环保技术有限公司 | A kind of permanent-magnet speed governor of fixed magnetic gap |
| CN107800266A (en) * | 2017-11-01 | 2018-03-13 | 山东洁盟节能环保技术有限公司 | A kind of permanent-magnet speed governor of fixed magnetic gap |
| CN107834807A (en) * | 2017-11-01 | 2018-03-23 | 山东洁盟节能环保技术有限公司 | A kind of permanent-magnet speed governor of fixed magnetic gap |
| CN107888051A (en) * | 2017-11-01 | 2018-04-06 | 山东洁盟节能环保技术有限公司 | A kind of permanent-magnet speed governor of fixed magnetic gap |
| CN107872142A (en) * | 2017-11-01 | 2018-04-03 | 山东洁盟节能环保技术有限公司 | A kind of permanent-magnet speed governor of fixed magnetic gap |
| CN109347401B (en) * | 2018-11-08 | 2023-11-28 | 深圳和而泰智能控制股份有限公司 | Motor rotation speed control device, motor and food processing equipment |
| CN110677966B (en) * | 2019-09-22 | 2023-09-12 | 东莞市科可特电子科技有限公司 | Static-removing and dust-removing device of feeding bin |
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