CN211380962U - Power supply circuit and household appliance - Google Patents
Power supply circuit and household appliance Download PDFInfo
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- CN211380962U CN211380962U CN201921488519.3U CN201921488519U CN211380962U CN 211380962 U CN211380962 U CN 211380962U CN 201921488519 U CN201921488519 U CN 201921488519U CN 211380962 U CN211380962 U CN 211380962U
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- 230000006698 induction Effects 0.000 claims abstract description 12
- 238000001514 detection method Methods 0.000 claims description 23
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- 238000004146 energy storage Methods 0.000 claims description 14
- 238000010586 diagram Methods 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 210000002421 cell wall Anatomy 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
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Abstract
The utility model discloses a power supply circuit and a household appliance, wherein the power supply circuit comprises a first power supply branch, a second power supply branch, an inductive switch and a feedback branch, the inductive switch is arranged on the second power supply branch, and the feedback branch is arranged between the first power supply branch and the second power supply branch; the induction switch receives the triggering operation of a user; the first power supply branch supplies power to a preset motor; the second power supply branch supplies power to the display screen; the second power supply branch sends an electric signal to the feedback branch when the induction switch receives the triggering operation of a user; when the feedback branch circuit receives the electric signal, the electric signal is sent to the first power supply branch circuit, so that the first power supply branch circuit stops or starts to supply power to the preset motor. The utility model discloses receive the operation back that triggers at inductive switch among the technical scheme, first power supply branch road stops to predetermineeing the motor power supply, predetermines motor stop work, but the second power supply branch road still supplies power to the display screen to promote the demonstration performance.
Description
Technical Field
The utility model relates to the technical field of household appliances, in particular to supply circuit and household appliance.
Background
Along with the improvement of living standard, more and more small household appliances have entered the kitchen, wherein, the cell wall breaking machine can break the cell wall of vegetables and fruits in the twinkling of an eye, is difficult to the nutrient composition who is absorbed by the human body at ordinary times to be separated out, can effectively extract plant biochemical, is favorable to being used for the human body to absorb, therefore, receives more and more welcome of people.
The high-end product of broken wall machine can use the color screen, and the color screen generally can take WIFI, take hardware such as pronunciation, bluetooth. The working current is relatively large, and the software works with an operating system and needs to be supplied with power continuously. The wall breaking machine comprises a cup body and a base, wherein a motor is arranged in the base, safety regulations require that the motor must be physically stopped after the cup body is taken off, and the base is powered off when the cup is taken up.
When the cup body works in the mode, the motor is lifted up, the color screen is powered off, the color screen is started to be in about 1 minute after the power is off due to the operation system of the color screen belt, the restarting time is long, and the display performance of the whole machine is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a supply circuit, when aiming at realizing the motor outage, the display screen does not fall the electricity to promote the demonstration performance.
In order to achieve the above object, the present invention provides a power supply circuit, which includes a first power supply branch, a second power supply branch, an inductive switch and a feedback branch, wherein the inductive switch is disposed on the second power supply branch, and the feedback branch is disposed between the first power supply branch and the second power supply branch; the inductive switch is used for receiving triggering operation of a user;
the first power supply branch is used for supplying power to a preset motor;
the second power supply branch is used for supplying power to the display screen; the feedback branch circuit is also used for sending an electric signal to the feedback branch circuit when the induction switch receives the triggering operation of a user;
the feedback branch circuit is used for sending the electric signal to the first power supply branch circuit when the electric signal is received, so that the first power supply branch circuit stops or starts to supply power to a preset motor.
Preferably, the first power supply branch comprises a frequency converter, and the frequency converter is connected with a preset motor; the second power supply branch circuit also comprises a switching power supply, a charging circuit, a detection circuit and a motor energy storage capacitor; the output end of the switch power supply is connected with the input end of the charging circuit, and the first end of the induction switch is also connected with the power supply end of the frequency converter and the charging end of the energy storage capacitor of the motor respectively; the second end of the inductive switch is connected with the detection end of the detection circuit;
the switching power supply is used for supplying power to the display screen and the frequency converter;
the detection circuit is used for detecting the target voltage output by the inductive switch;
and the charging circuit is used for adjusting the charging current output to the motor energy storage capacitor by the switching power supply according to the target voltage.
Preferably, the charging circuit comprises a microcontroller, a first resistor, a second resistor, a third resistor, a first triode and a second triode; the detection end of the microcontroller receives a target voltage input by the detection circuit, the control end of the microcontroller is connected with the first end of the first resistor, and the second end of the first resistor is connected with the base electrode of the first triode; the emitter of the first triode is grounded, and the collector of the first triode is connected with the first end of the second resistor; the second end of the second resistor is connected with the base electrode of the second triode, the emitting electrode of the second triode is connected with the switching power supply, and the collecting electrode of the second triode is connected with the inductive switch; the first end of the third resistor is connected with the base electrode of the first triode, and the second end of the third resistor is grounded.
Preferably, the charging circuit further includes a current-limiting resistor, a first end of the current-limiting resistor is connected to the output terminal of the switching power supply, and a second end of the current-limiting resistor is connected to the emitter of the second triode.
Preferably, the switching power supply includes a first power output terminal and a second power output terminal, and the first power output terminal is connected to the charging circuit; and the second power supply output end is connected with the display screen.
In order to achieve the above object, the present invention further provides a power supply circuit, wherein the power supply circuit includes a first power supply branch and an inductive switch; the inductive switch is connected with the motor, wherein
The inductive switch is used for receiving the triggering operation of a user; when receiving the triggering operation of a user, stopping or starting to supply power to a preset motor;
and the first power supply branch is used for supplying power to the display screen.
Preferably, the power supply circuit further comprises a driving circuit; the first end of the induction switch is connected with a mains supply, the second end of the induction switch is connected with the first end of the preset motor, the second end of the preset motor is connected with the output end of the driving circuit, and the input end of the driving circuit receives a control signal input by the controller.
Preferably, the second power supply branch comprises a rectifying circuit and a switching power supply; the input end of the rectifying circuit is connected with a mains supply, the output end of the rectifying circuit is connected with the switch power supply, and the switch power supply is connected with the display screen.
In order to achieve the above object, the present invention further provides a household appliance, which comprises the above power supply circuit.
Preferably, the household appliance is a wall breaking machine.
The utility model discloses technical scheme has formed a feeder ear circuit through setting up first power supply branch road, second power supply branch road, inductive switch and feedback branch road. The second power supply branch independently supplies power to the display screen, and the power supply of the second power supply branch is not influenced by the triggering of the inductive switch. Meanwhile, the second power supply branch circuit can control the first power supply branch circuit to stop or start to supply power to the preset motor through the feedback circuit according to the triggering of the inductive switch. The utility model discloses receive the operation back that triggers at inductive switch among the technical scheme, first power supply branch road stops to predetermineeing the motor power supply, predetermines motor stop work, but the second power supply branch road still supplies power to the display screen to promote the demonstration performance.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a functional block diagram of a first embodiment of the power supply circuit of the present invention;
fig. 2 is a schematic structural diagram of a first embodiment of the power supply circuit of the present invention;
fig. 3 is a functional block diagram of a second embodiment of the power supply circuit of the present invention;
fig. 4 is a schematic structural diagram of a second embodiment of the power supply circuit of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) | |
| 10 | First power supply branch | SW | Micro-switch | |
| 20 | Second |
21 | Switching |
|
| 30 | Induction switch | 22 | |
|
| 40 | Feedback branch | 23 | Detection circuit | |
| 50 | Rectifying |
60 | First power supply branch | |
| R1～R6 | First to sixth resistors | MCU | Micro-controller | |
| Q1～Q2 | First threePole tube to second triode | | Frequency converter | |
| 61 | |
80 | |
|
| 62 | Switching power supply | C1 | Energy storage capacitor of |
|
| 70 | Induction switch | Rs | Current-limiting resistor |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, it should be considered that the combination of the technical solutions does not exist, and is not within the protection scope of the present invention.
The utility model provides a power supply circuit.
Referring to fig. 1, in the embodiment of the present invention, the power supply circuit includes a first power supply branch 10, a second power supply branch 20, an inductive switch 30 and a feedback branch 40, wherein the inductive switch 30 is disposed on the second power supply branch 20, and the feedback branch 40 is disposed between the first power supply branch 10 and the second power supply branch 20.
The power supply circuit in this embodiment further includes a rectifying circuit 60 implemented by a bridge rectifier. The first input end and the second input end of the bridge stack are both connected with the mains supply interface, and the bridge stack rectifies the input mains supply into direct current which is then output to the first power supply branch 10 and the second power supply branch 20.
The inductive switch 30 is used for receiving a trigger operation of a user. In this embodiment, the inductive switch 30 is a microswitch. In an application scenario, the power supply circuit is applied to a wall breaking machine, the wall breaking machine comprises a base and a cup body, the base is arranged below the cup body, and the inductive switch 30 is arranged on the base. When the cup is taken up or put down, the inductive switch 30 receives the trigger operation of the user.
The first power supply branch 10 is configured to supply power to a preset motor. The second power supply branch 20 is configured to supply power to the display screen, and is further configured to send an electrical signal to the feedback branch 40 when the inductive switch 30 receives a trigger operation of a user. The feedback branch circuit 40 is configured to send an electrical signal to the first power supply branch circuit 10 when receiving the electrical signal, so that the first power supply branch circuit 10 stops or starts to supply power to a preset motor.
It should be noted that, when the inductive switch 30 receives the trigger operation, the second power supply branch 20 continues to supply power to the display screen, the feedback branch 40 outputs an electrical signal to the first power supply branch 10, and the first power supply branch 10 stops supplying power to the preset motor.
The utility model discloses technical scheme has formed a feeder circuit through setting up first power supply branch road 10, second power supply branch road 20, inductive switch 30 and feedback branch road 40. The second power supply branch 20 supplies power to the display screen independently, and the power supply of the second power supply branch is not affected by the triggering of the inductive switch 30. Meanwhile, the second power supply branch 20 can control the first power supply branch 10 to stop or start supplying power to the preset motor through the feedback circuit 40 according to the triggering of the inductive switch 30. The utility model discloses receive the operation back that triggers at inductive switch among the technical scheme, first power supply branch road 10 stops to predetermineeing the motor power supply, predetermines the motor stop work, but second power supply branch road 20 still supplies power to the display screen to promote the demonstration performance.
Specifically, the first power supply branch 10 includes a frequency converter IPM, and the frequency converter IPM is connected to a preset motor; the second power supply branch 20 further includes a switching power supply 21, a charging circuit 22, a detection circuit 23, and a motor energy storage capacitor C1; the output end of the switch power supply 21 is connected with the input end of the charging circuit 22, and the first end of the inductive switch 30 is further connected with the power supply end of the inverter IPM and the charging end of the motor energy storage capacitor C1 respectively; a second terminal of the inductive switch 30 is connected to a detection terminal of the detection circuit 23.
And the switching power supply is used for supplying power to the display screen and the IPM of the frequency converter. In this embodiment, the switching power supply provides 15V and 5V dc power, 5V is used to supply power to the display screen, and 15V is used to supply power to the inverter IPM.
The detection circuit 23 is configured to detect a target voltage output by the inductive switch 30. The charging circuit is configured to adjust a charging current output by the switching power supply 21 to the motor energy storage capacitor C1 according to the target voltage. In this embodiment, the detection circuit is composed of three resistors connected in series: a fourth resistor R4, a fifth resistor R5 and a sixth point resistor R6.
It should be noted that, when the switching power supply 21 is powered on, the output current will instantaneously impact the motor energy storage capacitor C1. In order to reduce the loss due to the impact, a detection circuit 23 and a charging circuit 22 are provided. The detection circuit 23 detects whether the voltage at the two ends of the motor energy storage capacitor C1 is stabilized at 15V, and if not, the current output by the switching power supply is limited within a smaller range through the charging circuit 22; if the voltage across the motor energy storage capacitor C1 is stable, the magnitude of the charging current is not limited.
Specifically, the charging circuit comprises a microcontroller MCU, a first resistor R1, a second resistor R2, a third resistor R3, a first triode Q1 and a second triode Q2; the detection end of the microcontroller MCU receives a target voltage input by the detection circuit 23, the control end of the microcontroller MCU is connected with the first end of the first resistor R1, and the second end of the first resistor R1 is connected with the base electrode of the first triode Q1; the emitter of the first triode Q1 is grounded, and the collector of the first triode Q1 is connected with the first end of the second resistor R2; a second end of the second resistor R2 is connected to a base of the second transistor Q2, an emitter of the second transistor Q2 is connected to the switching power supply 21, and a collector of the second transistor Q2 is connected to the inductive switch 30; the first end of the third resistor R3 is connected to the base of the first transistor Q1, and the second end of the third resistor R3 is grounded.
As will be readily appreciated, the first transistor Q1 is used to control the turning on or off of the second transistor Q2. The microcontroller MCU adjusts the charging current output from the switching power supply 21 by outputting a PWM control signal of a preset duty ratio. When the duty ratio is increased, the output charging current increases. When the voltage across the motor energy storage capacitor C1 is stable, the microcontroller MCU outputs a constant turn-on signal to keep the charging circuit 22 on.
Further, the charging circuit 22 further includes a current-limiting resistor Rs, a first end of the current-limiting resistor Rs is connected to the output terminal of the switching power supply 21, and a second end of the current-limiting resistor Rs is connected to the emitter of the second transistor Q2. The current limiting resistor Rs is used to prevent the switching power supply from outputting excessive current, which may cause damage to the first transistor Q1 and the second transistor Q2.
In this embodiment, the switching power supply 21 includes a first power output end and a second power output end, and the first power output end is connected to the charging circuit 22; and the second power supply output end is connected with the display screen.
To sum up, in a working scenario, after the system is turned on, the microcontroller MCU receives the target voltage input by the detection circuit 23, and determines whether the voltage output from the switching power supply 21 to the micro switch SW is a set value, i.e. 15V, according to the target voltage.
If yes, continuously outputting a 15V power supply to drive a preset motor to start working. If not, judging whether the voltage output to the microswitch SW by the switching power supply 21 is increased, if so, outputting a PWM control signal with a preset duty ratio to the charging circuit 22 by the microcontroller MCU; if the voltage is reduced or 0, the micro-controller MCU judges that the micro-switch SW is disconnected, and the display cup body is taken away through the display screen.
Referring to fig. 3, in order to achieve the above object, the present invention further provides a power supply circuit, which includes a first power supply branch 60 and an inductive switch 70; the inductive switch 70 is connected with a preset motor, wherein
The inductive switch 70 is used for receiving the triggering operation of a user; when receiving the triggering operation of a user, stopping or starting to supply power to a preset motor; the first power supply branch 60 is used for supplying power to the display screen. In this embodiment, the inductive switch is a microswitch.
It should be noted that the preset motor in this embodiment is an ac motor, and the ac power is directly used for power supply. The power supply circuit further includes a drive circuit 80; the first end of micro-gap switch SW and commercial power are connected, the second end of micro-gap switch SW with the first end of predetermineeing the motor is connected, the second end of predetermineeing the motor with drive circuit 80's output is connected, drive circuit 80's input receives the control signal of microcontroller MCU input.
The driving circuit 80 is realized by silicon controlled rectifier, the controlled end of the silicon controlled rectifier is connected with the microcontroller MCU, and the microcontroller MCU controls the rotation of the motor by outputting PWM control signals.
Specifically, the first power supply branch 60 includes a rectifying circuit 61 and a switching power supply 62; the input end of the rectifying circuit 61 is connected with the mains supply, the output end of the rectifying circuit 61 is connected with the switching power supply 62, and the switching power supply 62 is connected with the display screen.
In this embodiment, the rectifying circuit 62 is implemented by a bridge rectifier, which rectifies the input ac power into dc power, and then converts the dc power into dc power with a preset voltage value by the switching power supply 62.
The utility model discloses among the technical scheme, through setting up first power supply branch 60 and inductive switch, formed a supply circuit. In this scheme, inductive switch 70 and predetermine the motor in same return circuit, inductive switch 70 direct control predetermines the switch of motor or hangs up, is providing power for the display screen alone through first power supply branch road. So, when predetermineeing the motor outage, the display screen does not fall the power to promote the demonstration performance.
The utility model discloses still provide a domestic appliance, this domestic appliance include above-mentioned supply circuit, and above-mentioned embodiment is referred to this supply circuit's concrete structure, because domestic appliance has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is no longer given here.
The household appliance may be a wall breaking machine.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. A power supply circuit is characterized by comprising a first power supply branch, a second power supply branch, an inductive switch and a feedback branch, wherein the inductive switch is arranged on the second power supply branch, and the feedback branch is arranged between the first power supply branch and the second power supply branch; wherein,
the inductive switch is used for receiving the triggering operation of a user;
the first power supply branch is used for supplying power to a preset motor;
the second power supply branch is used for supplying power to the display screen; the feedback branch circuit is also used for sending an electric signal to the feedback branch circuit when the induction switch receives the triggering operation of a user;
the feedback branch circuit is used for sending the electric signal to the first power supply branch circuit when the electric signal is received, so that the first power supply branch circuit stops or starts to supply power to a preset motor.
2. The power supply circuit of claim 1 wherein said first power supply branch includes a frequency converter, said frequency converter being connected to a predetermined motor; the second power supply branch circuit also comprises a switching power supply, a charging circuit, a detection circuit and a motor energy storage capacitor; the output end of the switch power supply is connected with the input end of the charging circuit, and the first end of the induction switch is also connected with the power supply end of the frequency converter and the charging end of the energy storage capacitor of the motor respectively; the second end of the inductive switch is connected with the detection end of the detection circuit;
the switching power supply is used for supplying power to the display screen and the frequency converter;
the detection circuit is used for detecting the target voltage output by the inductive switch;
and the charging circuit is used for adjusting the charging current output to the motor energy storage capacitor by the switching power supply according to the target voltage.
3. The power supply circuit of claim 2 wherein the charging circuit comprises a microcontroller, a first resistor, a second resistor, a third resistor, a first transistor, and a second transistor; the detection end of the microcontroller receives a target voltage input by the detection circuit, the control end of the microcontroller is connected with the first end of the first resistor, and the second end of the first resistor is connected with the base electrode of the first triode; the emitter of the first triode is grounded, and the collector of the first triode is connected with the first end of the second resistor; the second end of the second resistor is connected with the base electrode of the second triode, the emitting electrode of the second triode is connected with the switching power supply, and the collecting electrode of the second triode is connected with the inductive switch; the first end of the third resistor is connected with the base electrode of the first triode, and the second end of the third resistor is grounded.
4. The power supply circuit of claim 3 wherein the charging circuit further comprises a current limiting resistor, a first terminal of the current limiting resistor being coupled to the output of the switching power supply, and a second terminal of the current limiting resistor being coupled to the emitter of the second transistor.
5. The power supply circuit of claim 2 wherein said switching power supply includes a first power supply output and a second power supply output, said first power supply output being connected to said charging circuit; and the second power supply output end is connected with the display screen.
6. A power supply circuit is characterized by comprising a first power supply branch and an inductive switch; the inductive switch is connected with a preset motor, wherein
The inductive switch is used for receiving the triggering operation of a user; when receiving the triggering operation of a user, stopping or starting to supply power to a preset motor;
and the first power supply branch is used for supplying power to the display screen.
7. The power supply circuit of claim 6 wherein said power supply circuit further comprises a driver circuit; the first end of the induction switch is connected with a mains supply, the second end of the induction switch is connected with the first end of the preset motor, the second end of the preset motor is connected with the output end of the driving circuit, and the input end of the driving circuit receives a control signal input by the controller.
8. The power supply circuit of claim 6 wherein said first power supply branch comprises a rectifier circuit and a switching power supply; the input end of the rectifying circuit is connected with a mains supply, the output end of the rectifying circuit is connected with the switch power supply, and the switch power supply is connected with the display screen.
9. A household appliance, characterized in that it comprises a supply circuit according to any one of claims 1 to 5 or 6 to 8.
10. The household appliance of claim 9, wherein the household appliance is a wall breaking machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921488519.3U CN211380962U (en) | 2019-09-06 | 2019-09-06 | Power supply circuit and household appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921488519.3U CN211380962U (en) | 2019-09-06 | 2019-09-06 | Power supply circuit and household appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211380962U true CN211380962U (en) | 2020-09-01 |
Family
ID=72221370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921488519.3U Active CN211380962U (en) | 2019-09-06 | 2019-09-06 | Power supply circuit and household appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211380962U (en) |
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- 2019-09-06 CN CN201921488519.3U patent/CN211380962U/en active Active
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