CN107015513A - Control circuit, household appliance and power supply method of household appliance - Google Patents
Control circuit, household appliance and power supply method of household appliance Download PDFInfo
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- CN107015513A CN107015513A CN201710416804.3A CN201710416804A CN107015513A CN 107015513 A CN107015513 A CN 107015513A CN 201710416804 A CN201710416804 A CN 201710416804A CN 107015513 A CN107015513 A CN 107015513A
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/06—Control, e.g. of temperature, of power
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
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- Rectifiers (AREA)
Abstract
The invention provides a control circuit, a household appliance and a power supply method of the household appliance. Wherein, the control circuit includes: the system comprises a rectification module, a switching power supply module, an MCU (microprogrammed control unit), a control module and a main loop of the household appliance, wherein the main loop comprises a rectification bridge; when the household appliance is in a standby state, the control module controls the branch circuit to be disconnected according to the control signal so that the rectification module and one phase of the rectification bridge form a half-wave rectification circuit; when the household appliance is in a working state, the control module controls the branch circuit to be switched on according to the control signal, so that the rectification module and the rectification bridge form a full-wave rectification circuit. According to the control circuit provided by the invention, when the household appliance is in a standby state, the rectification is realized by adopting a half-wave rectification mode, so that the power consumption of the household appliance in the standby state is effectively reduced.
Description
Technical field
The present invention relates to household electrical appliance technical field, more particularly to a kind of circuit, household electrical appliance and household electrical appliance of controlling
Method of supplying power to.
Background technology
The high-power household electrical appliance such as electromagnetic oven have Industry code requirements when standby for stand-by power consumption, must not be higher than one
Fixed number value.Accordingly, it would be desirable to reduce the stand-by power consumption of electromagnetic oven to meet professional standard.
At present, in order to reduce the stand-by power consumption of electromagnetic oven, increase a relay generally in major loop, pass through relay
Controlling switch power unit realizes independent rectification.Specifically, switching power supply parts generally include rectification circuit, switching power circuit
And control module.When electromagnetic oven is standby, relay cut-out major loop, rectification circuit, switching power circuit and control module can
To realize the independent rectification of switching power supply parts.
But, switching power supply parts independence rectification when electromagnetic oven is standby, switching power supply parts need increased element and electricity
Road is more so that power consumption when electromagnetic oven is standby is still very big.
The content of the invention
In order to solve at least one problem mentioned in background technology, the present invention provides a kind of control circuit, household electrical appliance
With the method for supplying power to of household electrical appliance, power consumption of the household electrical appliance when standby is reduced.
To achieve these goals, the present invention provides a kind of control circuit, including：Rectification module, switch power module,
MCU, control module and household electrical appliance major loop, the major loop include rectifier bridge；The rectification module, the major loop are equal
It is connected in parallel with AC power, the output end of the rectification module is connected with the input of the switch power module, described to open
The output end of powered-down source module is connected with the input of the MCU, the input of the output end of the MCU and the control module
Connection, the control module is connected on a branch road between the AC power and the major loop；The MCU, is used for
Control signal is sent to the control module according to the state of the household electrical appliance；When the household electrical appliance are in holding state
When, the control module controls the branch road to disconnect according to control signal, so that the one of the rectification module and the rectifier bridge
Mutually form half-wave rectifying circuit；When the household electrical appliance are in running order, the control module is according to control signal control
The branch road is connected, so that the rectification module and rectifier bridge formation full-wave rectifying circuit.
Control circuit as described above, when household electrical appliance are in holding state, family expenses are reduced by halfwave rectifier mode
The voltage of electrical equipment, therefore reduce power consumption of the household electrical appliance in holding state.It is additionally, since by rectification module and major loop
In rectifier bridge realize rectification jointly, so the element and circuit of complexity need not be increased, therefore reduce further household electric
Power consumption of the device when standby.
In one embodiment of this invention, the rectification module includes two commutation diodes；Described two poles of rectification two
The positive pole of pipe is connected with the zero line and live wire of the AC power respectively, and the negative pole of described two commutation diodes is opened with described
The input connection of powered-down source module.
In one embodiment of this invention, the control module includes relay and relay control unit；The MCU's
Output end is connected with the input of the relay control unit, the output end of the relay control unit and the relay
Input connection, the relay is connected on the branch road；The relay control unit is used to be believed according to the control
The opening and closing of number control relay, so that the branch road disconnects or connected.
In one embodiment of this invention, the input of the relay include first port and second port, it is described after
Electrical control unit is relay drive circuit；The input of the relay drive circuit is connected with the output end of the MCU,
The output end of the relay drive circuit is connected with the first port, and the second port is connected with dc source；It is described
Relay drive circuit, opening or closure for controlling the relay according to the control signal, so that the branch road
Disconnect or connect.
In one embodiment of this invention, the input of the relay include first port and second port, it is described after
Electrical control unit is supply voltage on-off circuit；The input of the supply voltage on-off circuit and the output end of the MCU
Connection, the output end of the supply voltage on-off circuit is connected with the first port, the second port ground connection；The power supply
Voltage switcher circuit, opening or closure for controlling the relay according to the control signal, so that the branch road is disconnected
Open or connect.
In one embodiment of this invention, the relay is electromagnetic relay.
In the above embodiment of the present invention, in addition to voltage sampling circuit, the input of the voltage sampling circuit with
The output end connection of the rectification module, the output end of the voltage sampling circuit is connected with the MCU；The MCU is additionally operable to,
Voltage sample value is obtained by the voltage sampling circuit, and determines according to the voltage sample value shape of the household electrical appliance
State.
Control circuit as described above, by setting voltage sampling circuit, MCU can obtain electricity by voltage sampling circuit
Press sampled value.MCU can accurately determine the current operating state of household electrical appliance according to voltage sample value.
The present invention also provides a kind of household electrical appliance, and the household electrical appliance are internally provided with control provided in an embodiment of the present invention
Circuit, the control circuit is used to provide operating voltage for the household electrical appliance.
The present invention also provides a kind of method of supplying power to of household electrical appliance, including：
Obtain the status signal of household electrical appliance；The status signal includes standby signal and working signal, the standby letter
Number indicate the household electrical appliance and be in holding state, it is in running order that the working signal indicates the household electrical appliance；
If the status signal is standby signal, control the control circuit set in the household electrical appliance whole by half-wave
Stream mode provides operating voltage；
If the status signal is working signal, control the control circuit set in the household electrical appliance whole by all-wave
Stream mode provides operating voltage.
The construction and its other goals of the invention and beneficial effect of the present invention will by with reference to accompanying drawing to preferred real
Apply the description of example and more obvious understandable.
Brief description of the drawings
Fig. 1 is the structural representation for the control circuit that the embodiment of the present invention one is provided；
Fig. 2 is the structural representation for the control module that the embodiment of the present invention one is provided；
Fig. 3 is the circuit diagram for the control circuit that the embodiment of the present invention two is provided；
Fig. 4 is the circuit diagram for the control circuit that the embodiment of the present invention three is provided；
Fig. 5 is the flow chart of the method for supplying power to for the household electrical appliance that the embodiment of the present invention one is provided.
Description of reference numerals：
11：Rectification module； 12：Switch power module；
13：Control module； 14：Major loop；
15：Rectifier bridge； 16：Voltage sampling circuit；
17：MCU； 22：Relay control unit；
21：Relay； 221：Relay drive circuit；
222：Supply voltage on-off circuit.
Embodiment
Fig. 1 is the structural representation for the control circuit that the embodiment of the present invention one is provided.As shown in figure 1, the present embodiment is provided
Control circuit, can include：Rectification module 11, switch power module 12, micro-control unit (Microcontroller
Unit, MCU) 17, the major loop 14 of control module 13 and household electrical appliance, major loop 14 includes rectifier bridge 15.
Rectification module 11, major loop 14 are connected in parallel with AC power, the output end and Switching Power Supply of rectification module 11
The input connection of module 12, the output end of switch power module 12 and MCU17 input are connected, MCU17 output end with
The input connection of control module 13, control module 13 is connected on a branch road between AC power and major loop 14.
MCU17, for sending control signal to control module according to the state of household electrical appliance.
When household electrical appliance are in holding state, control module 13 disconnects according to control signal controlling brancher, so that rectification
Module 11 mutually forms half-wave rectifying circuit with the one of rectifier bridge 15.When household electrical appliance are in running order, control module 13
Connected according to control signal controlling brancher, so that rectification module 11 and the formation full-wave rectifying circuit of rectifier bridge 15.
Specifically, controlling circuit to be the part in the internal circuits of household electrical appliance such as electromagnetic oven.Control circuit can be by
Alternating current is converted to direct current, be household electrical appliance internal circuit in various circuits, chip etc. direct-current working volts are provided.Its
In, AC power has live wire (AC/L) and zero line (AC/N).Other loads are typically provided with the major loop 14 of household electrical appliance,
Such as electromagnetic coil disk.The household electrical appliance such as electromagnetic oven are operationally, it is necessary to be the load supplying on major loop 14, therefore, need
Improve the load capacity of switch power module 12.The household electrical appliance such as electromagnetic oven are when standby, due to other on major loop 14
Load does not work, thus, it is only required to provide the minimum voltage for maintaining electromagnetic oven standby, the household electrical appliance such as electromagnetic oven are standby
When power consumption it is the smaller the better.
The present embodiment provide control circuit, circuit connection on, rectification module 11, major loop 14 with AC power simultaneously
Connection connection.That is, the input of rectification module 11 is connected with the zero line and live wire of AC power respectively.The two ends difference of major loop 14
It is connected with the zero line and live wire of AC power, forms two branch roads.The output end of rectification module 11 and switch power module 12
Input is connected, and the output end of switch power module 12 and MCU17 input are connected, MCU17 output end and control module
13 input connection, control module 13 is connected on a branch road between AC power and major loop 14.That is, control module
13 can be arranged on the zero line of AC power or live wire.
The control circuit that the present embodiment is provided, in circuit theory, the rectifier bridge 15 in rectification module 11 and major loop 14
Rectification is realized jointly.Specifically, MCU17 sends different control signals according to the state of household electrical appliance.When household electrical appliance are in
During holding state, control module 13 disconnects according to control signal controlling brancher, and the branch road is the branch road where control module 13.It is whole
Flow module 11 mutually forms half-wave rectifying circuit with the one of rectifier bridge 15.Under halfwave rectifier mode, input voltage and output voltage
Between generally have certain proportionate relationship, and output voltage and input voltage proportionality coefficient generally it is smaller.For example, Uout=
0.45*Uin.Wherein, UinFor input voltage, UoutFor output voltage.So, when household electrical appliance are in holding state, pass through half
Ripple rectifier system can reduce the voltage of household electrical appliance, therefore can reduce work(of the household electrical appliance such as electromagnetic oven in holding state
Consumption.Moreover, the control circuit provided compared to prior art, the present embodiment, due to by rectification module 11 and major loop 14
Rectifier bridge 15 realize rectification jointly, so the element and circuit of complexity need not be increased, therefore reduce further electromagnetic oven
Deng power consumption of the household electrical appliance when standby.When household electrical appliance are in running order, control module 13 is according to control signal control
Branch road is connected, and the branch road is the branch road where control module 13.Rectification module 11 and the formation full-wave rectifying circuit of rectifier bridge 15.
Under way of full-wave rectification, generally there is certain proportionate relationship, and output voltage and input between input voltage and output voltage
The proportionality coefficient of voltage is generally larger, for example, Uout=0.9*Uin.So, when household electrical appliance are in running order, by complete
Ripple rectifier system can lift the voltage of household electrical appliance, therefore improve the load capacity of switch power module 12.
It should be noted that the present embodiment is realized for the physical circuit of switch power module 12, major loop 14 is not spy
Do not limit, can be the circuit of switching power circuit and major loop in existing household electrical appliance.For example, major loop 14 can also be wrapped
Include Electro Magnetic Compatibility (Electro Magnetic Compatibility, EMC) filter circuit, resonance circuit, insulated gate bipolar
Transistor npn npn (Insulated Gate Bipolar Transistor, IGBT), IGBT drive circuit etc..
It should be noted that the implementation for the rectifier bridge 15 that the present embodiment includes for major loop 14 is not limited,
It can be any one existing rectifier bridge.Rectifier bridge is typically that rectifying tube is enclosed in a housing, is divided into full-bridge and half-bridge.
Full-bridge refers to that four diodes of the bridge rectifier that will be connected are enclosed in together.Half-bridge refers to four diode bridges are whole
The half of stream is enclosed in together, and a full-bridge can be constituted with two half-bridges.
It should be noted that the present embodiment is not limited for MCU implementation, can be in existing household electrical appliance
MCU realize.
It should be noted that the present embodiment is not limited for the implementation of control signal.For example, control signal can be with
For high level signal or low level signal.
It should be noted that the present embodiment is not limited for also included other circuits or element in control circuit,
It can be configured as needed.
Optionally, EMC filter circuit can also be set between rectification module 11 and switch power module 12.
Wherein, as a kind of concrete implementation mode, rectification module 11 can include two commutation diodes.
The positive pole of two commutation diodes is connected with the zero line and live wire of AC power respectively, two commutation diodes it is negative
Input extremely with switch power module 12 is connected.
Wherein, as a kind of concrete implementation mode, Fig. 2 is that the structure for the control module that the embodiment of the present invention one is provided is shown
It is intended to.As shown in Fig. 2 control module 13 can include relay 21 and relay control unit 22.
MCU17 output end is connected with the input of relay control unit 22, the output end of relay control unit 22
It is connected with the input of relay 21, relay 21 is connected on a branch road between AC power and major loop 14.
Relay control unit 22 is used for the opening and closing according to control signal control relay 21, so that AC power
A branch road between major loop 14 disconnects or connected.
It should be noted that the present embodiment is not specially limited for model, the type of relay 21, carry out as needed
Set.Optionally, relay 21 can be electromagnetic relay.
Optionally, control circuit can also include voltage sampling circuit 16, the input of voltage sampling circuit 16 and rectification
The output end connection of module 11, the output end of voltage sampling circuit 16 is connected with MCU17.
MCU17 is additionally operable to, and obtains voltage sample value by voltage sampling circuit 16, and determine family expenses according to voltage sample value
The state of electrical equipment.
Specifically, by setting voltage sampling circuit 16, MCU17 can obtain voltage sample by voltage sampling circuit 16
Value.Because under halfwave rectifier mode and under way of full-wave rectification, voltage sample value is different.Generally, halfwave rectifier side
Voltage sample value under formula is less than the voltage sample value under way of full-wave rectification.So, MCU17 can be accurate according to voltage sample value
Determine the current operating state of the household electrical appliance such as electromagnetic oven, it is possible to carried out according to the accurate working condition of determination further
Control, such as Power Control.
It is not specially limited it should be noted that the present embodiment is realized for the physical circuit of voltage sampling circuit 16, can
To use any one existing voltage sampling circuit.Voltage sampling circuit is generally realized by sampling resistor, from output voltage
Take a part of voltage as reference, voltage adjustment is carried out according to the reference voltage or further judgement is compared.
A kind of control circuit is present embodiments provided, including：Rectification module, switch power module, MCU, control module and
The major loop of household electrical appliance, major loop includes rectifier bridge.The control circuit that the present embodiment is provided, when household electrical appliance are in standby shape
During state, half-wave rectifying circuit is mutually formed with the one of rectifier bridge by rectification module and realizes rectification, household electrical appliance is effectively reduced and exists
Power consumption when standby.
Fig. 3 is the circuit diagram for the control circuit that the embodiment of the present invention two is provided.Base of the present embodiment in above-described embodiment one
There is provided a kind of specific implementation of control circuit on plinth, wherein, relay control unit is real by relay drive circuit
It is existing., can also be by the circuit realirations of other forms it is to be appreciated that the circuit of each in Fig. 3 or module are only a kind of examples.Such as
Shown in Fig. 3, the control circuit that the present embodiment is provided can include：Rectification module 11, switch power module 12, MCU17, control
The major loop 14 and voltage sampling circuit 16 of module, household electrical appliance, major loop 14 include rectifier bridge 15.
In the present embodiment, control circuit can also include EMC filter circuit 1.Major loop 14 can also include major loop
Current rectifying and wave filtering circuit (EMC filter circuit 2, electric capacity C1), resonance circuit (inductance L2, electric capacity C2), IGBT, IGBT drive circuit.
Wherein, the electromagnetism harmonic noise that EMC filter circuit 1 and EMC filter circuit 2 are used in filtering appts.IGBT causes resonance circuit
Vibrate, IGBT drive circuit is used for the turn-on and turn-off for driving IGBT.Major loop current rectifying and wave filtering circuit is used for alternating current
It is transformed into direct current and is supplied to resonance circuit.Resonance circuit is used to produce vibration, drum and the mutual discharge and recharge of resonant capacitance, electric field
Energy is converted to magnetic field energy.
Wherein, control module can include relay 21 and relay control unit.Relay 21 is connected to AC power
Zero line on.
The input of relay 21 includes first port and second port, and relay control unit is relay drive circuit
221.The input of relay drive circuit 221 and MCU17 output end are connected, the output end of relay drive circuit 221 with
First port is connected, and second port is connected with dc source.
Relay drive circuit 221, for the opening or closure according to control signal control relay 21, so that exchange
A branch road between power supply and major loop 14 disconnects or connected.
Relay drive circuit 221 can include triode Q1, resistance R1 and resistance R2.
Rectification module 11 can include commutation diode D1 and commutation diode D2.Commutation diode D1 positive pole is with exchanging
The zero line connection of power supply, negative pole is connected by EMC filter circuit 1 with the input of switch power module 12.Commutation diode D2
Positive pole and the live wire of AC power connect, negative pole is connected by EMC filter circuit 1 with the input of switch power module 12.
Voltage sampling circuit 16 can include resistance R5 and resistance R6.
Rectifier bridge 15 can include 4 diodes.
Wherein, VCC illustrates the supply voltage of circuit, and VDD illustrates the operating voltage of chip.
In the present embodiment, when household electrical appliance are in holding state, MCU17 sends control according to the state of household electrical appliance
Signal, relay drive circuit 221 is opened according to control signal control relay 21 so that one end of major loop 14 and alternating current
The zero line in source disconnects.Now, it is left by commutation diode D1, EMC filter circuit 1, switch power module 12, MCU17, rectifier bridge 15
The diode at upper angle can form path.And by commutation diode D2, EMC filter circuit 1, switch power module 12, MCU17,
The path of the diode formation in rectifier bridge 15 lower left corner, because relay 21 has cut off one end and the AC power of major loop 14
Zero line, causes paths open circuit.Therefore, can be by commutation diode D1 and whole when household electrical appliance are in holding state
Flow the formation half-wave rectifying circuit of bridge 15.
When household electrical appliance are in running order, MCU17 sends control signal according to the state of household electrical appliance, and relay drives
Dynamic circuit 221 is closed according to control signal control relay 21 so that one end of major loop 14 and the zero line of AC power are connected.
Now, by commutation diode D1, EMC filter circuit 1, switch power module 12, MCU17, the upper left corner of rectifier bridge 15 diode
Path can be formed.By commutation diode D2, EMC filter circuit 1, switch power module 12, MCU17, the lower left corner of rectifier bridge 15
Diode can form path.Therefore, when household electrical appliance are in running order, commutation diode D1, rectification can be passed through
Diode D2 and rectifier bridge 15 form full-wave rectifying circuit.
It should be noted that in the present embodiment, the output end of relay 21 can also be connected to the live wire of AC power
On.
Show it should be noted that the voltage sampling circuit 16 and relay drive circuit 221 in the present embodiment are only one kind
Example, voltage sampling circuit 16 can using it is existing any one can realize the circuit of voltage sample, relay drive circuit
221 can use it is existing any one can with control relay open or close circuit.The present embodiment is not spy to this
Do not limit.
Fig. 4 is the circuit diagram for the control circuit that the embodiment of the present invention three is provided.Base of the present embodiment in above-described embodiment one
There is provided another specific implementation of control circuit on plinth, wherein, relay control unit switchs electricity by supply voltage
Realize on road.It is to be appreciated that the circuit of each in Fig. 4 or module are only a kind of examples, can also be real by the circuit of other forms
It is existing.As shown in figure 4, the control circuit that the present embodiment is provided, can include：Rectification module 11, switch power module 12, MCU17,
The major loop 14 and voltage sampling circuit 16 of control module, household electrical appliance, major loop 14 include rectifier bridge 15.
In the present embodiment, control circuit can also include EMC filter circuit 1.Major loop 14 can also include major loop
Current rectifying and wave filtering circuit (EMC filter circuit 2, electric capacity C1), resonance circuit (inductance L2, electric capacity C2), IGBT, IGBT drive circuit.
Principle is similar to above-described embodiment two, and here is omitted.
Wherein, control module can include relay 21 and relay control unit.Relay 21 is connected to AC power
Zero line on.
The input of relay 21 includes first port and second port, and relay control unit is that supply voltage switchs electricity
Road 222.The input of supply voltage on-off circuit 222 and MCU17 output end are connected, supply voltage on-off circuit 222 it is defeated
Go out end to be connected with first port, second port ground connection.In the present embodiment, second port is grounded by resistance R4.
Supply voltage on-off circuit 222, for the opening or closure according to control signal control relay 21, so as to hand over
A branch road between power supply and major loop 14 is flowed to disconnect or connect.
Supply voltage on-off circuit 222 can include triode Q1, triode Q2, resistance R1, resistance R2 and resistance R3.
Rectification module 11 can include commutation diode D1 and commutation diode D2.Commutation diode D1 positive pole is with exchanging
The zero line connection of power supply, negative pole is connected by EMC filter circuit 1 with the input of switch power module 12.Commutation diode D2
Positive pole and the live wire of AC power connect, negative pole is connected by EMC filter circuit 1 with the input of switch power module 12.
Voltage sampling circuit 16 can include resistance R5 and resistance R6.
Rectifier bridge 15 can include 4 diodes.
Wherein, VCC1, VCC2 illustrate the supply voltage of circuit, and VDD illustrates the operating voltage of chip.
In the present embodiment, when household electrical appliance are in holding state, MCU17 sends control according to the state of household electrical appliance
Signal, supply voltage on-off circuit 222 is opened according to control signal control relay 21 so that one end of major loop 14 is with exchanging
The zero line of power supply disconnects.Now, by commutation diode D1, EMC filter circuit 1, switch power module 12, MCU17, rectifier bridge 15
The diode in the upper left corner can form path.And by commutation diode D2, EMC filter circuit 1, switch power module 12,
MCU17, the path of the diode formation in the lower left corner of rectifier bridge 15, because relay 21 has cut off one end of major loop 14 with exchanging
The zero line of power supply, causes paths open circuit.Therefore, when household electrical appliance are in holding state, commutation diode can be passed through
D1 and rectifier bridge 15 form half-wave rectifying circuit.
When household electrical appliance are in running order, MCU17 sends control signal, supply voltage according to the state of household electrical appliance
On-off circuit 222 is closed according to control signal control relay 21 so that one end of major loop 14 and the zero line of AC power connect
It is logical.Now, by commutation diode D1, EMC filter circuit 1, switch power module 12, MCU17, the upper left corner of rectifier bridge 15 two poles
Pipe can form path.By commutation diode D2, EMC filter circuit 1, switch power module 12, MCU17, the lower-left of rectifier bridge 15
The diode at angle can form path.Therefore, can be by commutation diode D1, whole when household electrical appliance are in running order
Stream diode D2 and rectifier bridge 15 form full-wave rectifying circuit.
In the present embodiment, because the second port of relay 21 is grounded, the only first port of relay 21 and power supply is electric
The circuit 222 that compresses switch is connected, therefore, reduces the power consumption of relay 21.So, when household electrical appliance are in holding state
When, it can further reduce the power consumption of household electrical appliance.
It should be noted that in the present embodiment, the output end of relay 21 can also be connected to the live wire of AC power
On.
It should be noted that the voltage sampling circuit 16 and supply voltage on-off circuit 222 in the present embodiment are only one kind
Example, voltage sampling circuit 16 can using it is existing any one can realize the circuit of voltage sample, supply voltage switch
Circuit 222 can use the circuit of any one existing offer power supply.The present embodiment is not specially limited to this.
The present invention also provides a kind of household electrical appliance, and household electrical appliance can be electromagnetic oven or other household electrical appliance, in electromagnetism
The household electrical appliance such as stove are internally provided with the control circuit provided such as above-mentioned embodiment one~implementation three, and control circuit is used to be family
Electrical appliance provides operating voltage.Wherein, the structure of control circuit, function are similar with previous embodiment with acting on, herein not
Repeat again.
Fig. 5 is the flow chart of the method for supplying power to for the household electrical appliance that the embodiment of the present invention one is provided.Provided in the present embodiment
Household electrical appliance method of supplying power to, go for above-described embodiment offer control circuit or household electrical appliance.Wherein, control
Structure, the function of circuit are similar with previous embodiment with acting on, and here is omitted.As shown in figure 5, the present embodiment is provided
Household electrical appliance method of supplying power to, can include：
S101, the status signal for obtaining household electrical appliance.
Wherein, status signal can include standby signal and working signal, standby signal indicate household electrical appliance be in treat
Machine state, it is in running order that working signal indicates household electrical appliance.
Specifically, the MCU in control circuit can obtain the status signal of household electrical appliance.The status signal can indicate house
The current working condition of electrical appliance.It therefore, it can further control household electrical appliance according to the status signal under different conditions
Rectifier system.
If S102, status signal are standby signal, the control circuit set in control household electrical appliance passes through halfwave rectifier
Mode provides operating voltage.
If S103, status signal are working signal, the control circuit set in control household electrical appliance passes through full-wave rectification
Mode provides operating voltage.
Wherein, control circuit provides operating voltage by halfwave rectifier mode or way of full-wave rectification, and realization principle can
So that referring to Fig. 1~embodiment illustrated in fig. 3, principle is similar, and here is omitted.
Optionally, the method for supplying power to for the household electrical appliance that the present embodiment is provided, can also include：
The voltage sample value of control circuit is obtained, the state of household electrical appliance is determined according to voltage sample value.
Specifically, the operating voltage provided by way of full-wave rectification or halfwave rectifier mode is different.Generally, half
Voltage sample value under ripple rectifier system is less than the voltage sample value under way of full-wave rectification.So, MCU can be adopted according to voltage
Sample value accurately determines the current operating state of the household electrical appliance such as electromagnetic oven, and enters traveling one according to the accurate working condition of determination
The control of step.
Present embodiments provide a kind of method of supplying power to of household electrical appliance.When household electrical appliance are in holding state, pass through half
Ripple rectifier system realizes rectification, effectively reduces power consumption of the household electrical appliance when standby.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above-mentioned each method embodiment can lead to
The related hardware of programmed instruction is crossed to complete.Foregoing program can be stored in a computer read/write memory medium.The journey
Sequence upon execution, performs the step of including above-mentioned each method embodiment；And foregoing storage medium includes：ROM, RAM, magnetic disc or
Person's CD etc. is various can be with the medium of store program codes.
Finally it should be noted that：Various embodiments above is only to the technical scheme for illustrating the embodiment of the present invention, rather than to it
Limitation；Although the embodiment of the present invention is described in detail with reference to foregoing embodiments, one of ordinary skill in the art
It should be understood that：It can still modify to the technical scheme described in foregoing embodiments, or to which part or
All technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this hair
The scope of bright embodiment technical scheme.
Claims (9)
1. one kind control circuit, it is characterised in that including：Rectification module, switch power module, micro-control unit MCU, control mould
The major loop of block and household electrical appliance, the major loop includes rectifier bridge；
The rectification module, the major loop are connected in parallel with AC power, and the output end of the rectification module is opened with described
The input connection of powered-down source module, the output end of the switch power module is connected with the input of the MCU, the MCU
Output end be connected with the input of the control module, the control module is connected to the AC power and the major loop
Between a branch road on；
The MCU, control signal is sent for the state according to the household electrical appliance to the control module；
When the household electrical appliance are in holding state, the control module controls the branch road to disconnect according to control signal, with
The rectification module is set mutually to form half-wave rectifying circuit with the one of the rectifier bridge；When the household electrical appliance are in running order
When, the control module controls the branch road to connect according to control signal, so that the rectification module and the rectifier bridge are formed
Full-wave rectifying circuit.
2. control circuit according to claim 1, it is characterised in that the rectification module includes two commutation diodes；
The positive pole of described two commutation diodes is connected with the zero line and live wire of the AC power respectively, described two rectifications two
Input of the negative pole of pole pipe with the switch power module is connected.
3. control circuit according to claim 1, it is characterised in that the control module includes relay and relay control
Unit processed；
The output end of the MCU is connected with the input of the relay control unit, the output of the relay control unit
End is connected with the input of the relay, and the relay is connected on the branch road；
The relay control unit is used for the opening and closing that the relay is controlled according to the control signal, so that described
Branch road disconnects or connected.
4. control circuit according to claim 3, it is characterised in that the input of the relay include first port and
Second port, the relay control unit is relay drive circuit；
The input of the relay drive circuit is connected with the output end of the MCU, the output of the relay drive circuit
End is connected with the first port, and the second port is connected with dc source；
The relay drive circuit, opening or closure for controlling the relay according to the control signal, so that
The branch road disconnects or connected.
5. control circuit according to claim 3, it is characterised in that the input of the relay include first port and
Second port, the relay control unit is supply voltage on-off circuit；
The input of the supply voltage on-off circuit is connected with the output end of the MCU, the supply voltage on-off circuit
Output end is connected with the first port, the second port ground connection；
The supply voltage on-off circuit, opening or closure for controlling the relay according to the control signal, with
The branch road is set to disconnect or connect.
6. control circuit according to claim 3, it is characterised in that the relay is electromagnetic relay.
7. the control circuit according to any one of claim 1 to 6, it is characterised in that described also including voltage sampling circuit
The input of voltage sampling circuit is connected with the output end of the rectification module, the output end of the voltage sampling circuit with it is described
MCU connections；
The MCU is additionally operable to, and obtains voltage sample value by the voltage sampling circuit, and determine according to the voltage sample value
The state of the household electrical appliance.
8. a kind of household electrical appliance, it is characterised in that the household electrical appliance are internally provided with as described in any one of claim 1 to 7
Control circuit, the control circuit be used for provide operating voltage for the household electrical appliance.
9. a kind of method of supplying power to of household electrical appliance, it is characterised in that including：
Obtain the status signal of household electrical appliance；The status signal includes standby signal and working signal, and the standby signal refers to
Show that the household electrical appliance are in holding state, it is in running order that the working signal indicates the household electrical appliance；
If the status signal is standby signal, the control circuit set in the household electrical appliance is controlled to pass through halfwave rectifier side
Formula provides operating voltage；
If the status signal is working signal, the control circuit set in the household electrical appliance is controlled to pass through full-wave rectification side
Formula provides operating voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710416804.3A CN107015513A (en) | 2017-06-06 | 2017-06-06 | Control circuit, household appliance and power supply method of household appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710416804.3A CN107015513A (en) | 2017-06-06 | 2017-06-06 | Control circuit, household appliance and power supply method of household appliance |
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| Publication Number | Publication Date |
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| CN107015513A true CN107015513A (en) | 2017-08-04 |
Family
ID=59451031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710416804.3A Pending CN107015513A (en) | 2017-06-06 | 2017-06-06 | Control circuit, household appliance and power supply method of household appliance |
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| Country | Link |
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| CN (1) | CN107015513A (en) |
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| CN111404134A (en) * | 2020-03-12 | 2020-07-10 | 九阳股份有限公司 | Safety control circuit for electromagnetic cooking appliance and electromagnetic cooking appliance |
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