CN206757364U - Control circuit and household appliance - Google Patents
Control circuit and household appliance Download PDFInfo
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- CN206757364U CN206757364U CN201720645916.1U CN201720645916U CN206757364U CN 206757364 U CN206757364 U CN 206757364U CN 201720645916 U CN201720645916 U CN 201720645916U CN 206757364 U CN206757364 U CN 206757364U
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Abstract
The utility model provides a control circuit and domestic 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. The utility model provides a control circuit, when domestic appliance is in standby state, adopt half-wave rectification mode to realize the rectification, effectively reduced the consumption of domestic appliance when the standby.
Description
Technical field
It the utility model is related to household electrical appliance technical field, more particularly to a kind of control circuit and household electrical appliance.
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.Therefore, it is necessary 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 electromagnetic oven it is standby when switching power supply parts independence rectification, 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.
Utility model content
In order to solve at least one problem mentioned in background technology, the utility model provides a kind of control circuit and family expenses
Electrical equipment, reduce power consumption of the household electrical appliance when standby.
To achieve these goals, the utility model provides a kind of control circuit, including：Rectification module, Switching Power Supply mould
Block, MCU, the major loop of control module and household electrical appliance, the major loop include rectifier bridge；The rectification module, the master return
Lu Junyu AC powers are connected in parallel, and the output end of the rectification module is connected with the input of the switch power module, institute
The output end for stating switch power module is connected with the input of the MCU, and the output end of the MCU is defeated with the control module
Enter end connection, the control module is connected on a branch road between the AC power and the major loop；The MCU,
For the state according to the household electrical appliance control signal is sent to the control module；When the household electrical appliance are in standby shape
During state, the control module controls the branch road to disconnect according to control signal, so that the rectification module and the rectifier bridge
One phase forms half-wave rectifying circuit；When the household electrical appliance are in running order, the control module is according to control signal control
Make the branch road to connect, so that the rectification module and the rectifier bridge form 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 an embodiment of the present utility model, the rectification module includes two commutation diodes；Described two rectifications
The positive pole of diode is connected with the zero line and live wire of the AC power respectively, and the negative pole of described two commutation diodes is and institute
State the input connection of switch power module.
In an embodiment of the present utility model, the control module includes relay and relay control unit；It is described
MCU output end is connected with the input of the relay control unit, the output end of the relay control unit with it is described
The input connection of relay, the relay are connected on the branch road；The relay control unit is used for according to
Control signal controls the opening and closing of the relay, so that the branch road disconnects or connected.
In an embodiment of the present utility model, the input of the relay includes first port and second port, institute
It is relay drive circuit to state relay control unit；The output end of the input of the relay drive circuit and the MCU
Connection, the output end of the relay drive circuit are connected with the first port, and the second port is connected with dc source；
The relay drive circuit, for controlling the opening or closure of the relay according to the control signal, so that described
Branch road disconnects or connected.
In an embodiment of the present utility model, the input of the relay includes first port and second port, institute
It is supply voltage on-off circuit to state relay control unit；The input of the supply voltage on-off circuit is defeated with the MCU's
Go out end connection, the output end of the supply voltage on-off circuit is connected with the first port, the second port ground connection；It is described
Supply voltage on-off circuit, for controlling the opening or closure of the relay according to the control signal, so that the branch
Road disconnects or connected.
In an embodiment of the present utility model, the relay is electromagnetic relay.
In above-described embodiment of the present utility model, in addition to voltage sampling circuit, the input of the voltage sampling circuit
End is connected with the output end of the rectification module, and the output end of the voltage sampling circuit is connected with the MCU；The MCU is also
For obtaining voltage sample value by the voltage sampling circuit, and the household electrical appliance are determined according to the voltage sample value
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 utility model also provides a kind of household electrical appliance, and the household electrical appliance are internally provided with the utility model embodiment and carried
The control circuit of confession, the control circuit are used to provide operating voltage for the household electrical appliance.
Construction of the present utility model and its other purpose of utility model and beneficial effect will be in conjunction with the accompanying drawings
Description of preferred embodiments and it is more obvious understandable.
Brief description of the drawings
Fig. 1 is the structural representation for the control circuit that the utility model embodiment one provides；
Fig. 2 is the structural representation for the control module that the utility model embodiment one provides；
Fig. 3 is the circuit diagram for the control circuit that the utility model embodiment two provides；
Fig. 4 is the circuit diagram for the control circuit that the utility model embodiment three provides；
Fig. 5 is the flow chart of the method for supplying power to for the household electrical appliance that the utility model embodiment one provides.
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 utility model embodiment one provides.As shown in figure 1, the present embodiment
The control circuit of offer, it 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 connect, MCU17 output end with
The input connection of control module 13, control module 13 are connected on a branch road between AC power and major loop 14.
MCU17, control signal is sent to control module for the state according to 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 rectifier bridge 15 form full-wave rectifying circuit.
Specifically, control circuit is the part in the internal circuits of household electrical appliance such as electromagnetic oven.Control circuit can incite somebody to action
Alternating current is converted to direct current, and direct-current working volts are provided for various circuits, chip in the internal circuit of household electrical appliance etc..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 etc..The household electrical appliance such as electromagnetic oven are at work, 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 household electrical appliance such as minimum voltage, electromagnetic oven for maintaining electromagnetic oven standby 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 both 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 connects, and the output end of switch power module 12 and MCU17 input connect, MCU17 output end and control module
13 input connection, control module 13 are connected on a branch road between AC power and major loop 14.That is, control module
13 can be arranged on the zero line or live wire of AC power.
The control circuit that the present embodiment provides, 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 there is certain proportionate relationship, and the proportionality coefficient of output voltage and input voltage is generally 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 controls according to control signal
Branch road is connected, and the branch road is the branch road where control module 13.Rectification module 11 and rectifier bridge 15 form full-wave rectifying circuit.
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 wrap
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 does not limit,
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.
Four diodes of the bridge rectifier that full-bridge refers to connect 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 formed with two half-bridges.
It should be noted that the present embodiment does not limit for MCU implementation, can be in existing household electrical appliance
MCU realize.
It should be noted that the present embodiment does not limit 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 does not limit for other also included 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, two commutation diodes can be included as a kind of concrete implementation mode, rectification module 11.
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 the knot for the control module that the utility model embodiment one provides
Structure schematic diagram.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 are 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
The current operating state of the household electrical appliance such as electromagnetic oven is determined, and can be 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
A part of voltage is taken to carry out voltage adjustment as reference 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 include rectifier bridge.The control circuit that the present embodiment provides, 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 utility model embodiment two provides.The present embodiment is in above-described embodiment one
On the basis of, there is provided a kind of specific implementation of control circuit, wherein, relay control unit passes through relay driving electricity
Realize on road.It is to be appreciated that each circuit or module are only a kind of examples in Fig. 3, can also be real by the circuit of other forms
It is existing.As shown in figure 3, the control circuit that the present embodiment provides, 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.
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 conversion is 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 connect, 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 are 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 are 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,
Path that the diode in the lower left corner of rectifier bridge 15 is formed, because relay 21 has cut off one end and the AC power of major loop 14
Zero line, cause the paths breaking.Therefore, can be by commutation diode D1 and whole when household electrical appliance are in holding state
Flow bridge 15 and form half-wave rectifying circuit.
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 use 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 utility model embodiment three provides.The present embodiment is in above-described embodiment one
On the basis of, there is provided another specific implementation of control circuit, wherein, relay control unit is opened by supply voltage
Close circuit realiration.It is to be appreciated that each circuit or module are only a kind of examples in Fig. 4, the electricity of other forms can also be passed through
Realize on road.As shown in figure 4, the control circuit that the present embodiment provides, can include：Rectification module 11, switch power module 12,
MCU17, control module, the major loop 14 and voltage sampling circuit 16 of 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 supply voltage switch electricity
Road 222.The input of supply voltage on-off circuit 222 and MCU17 output end connect, 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 are 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 are 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,
The path that MCU17, the diode in the lower left corner of rectifier bridge 15 are formed, because relay 21 has cut off one end of major loop 14 with exchanging
The zero line of power supply, cause the paths breaking.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 connects, and therefore, reduces the power consumption of relay 21.So, when household electrical appliance are in holding state
When, it can further reduce the power consumptions 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 use 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 utility model also provides a kind of household electrical appliance, and household electrical appliance can be electromagnetic oven or other household electrical appliance,
The household electrical appliance such as electromagnetic oven are internally provided with the control circuit provided such as above-mentioned embodiment one~implementation three, and control circuit is used for
Operating voltage is provided for household electrical appliance.Wherein, the structure of control circuit, function are similar with previous embodiment with acting on, this
Place repeats no more.
Fig. 5 is the flow chart of the method for supplying power to for the household electrical appliance that the utility model embodiment one provides.Institute in the present embodiment
The method of supplying power to of the household electrical appliance of offer, go for the control circuit or household electrical appliance of above-described embodiment offer.Wherein,
Structure, the function of control circuit are similar with previous embodiment with acting on, and here is omitted.As shown in figure 5, the present embodiment
The method of supplying power to of the household electrical appliance of offer, it can include：
S101, the status signal for obtaining household electrical appliance.
Wherein, status signal can include standby signal and working signal, and standby signal, which indicates household electrical appliance and is in, to be treated
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.Therefore, household electrical appliance can be further controlled according to the status signal under different conditions
Rectifier system.
If S102, status signal are standby signal, the control circuit set in household electrical appliance is controlled to pass through halfwave rectifier
Mode provides operating voltage.
If S103, status signal are working signal, the control circuit set in household electrical appliance is controlled to pass 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 provides, 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 adopt 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, execution 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 only illustrating the technical scheme of the utility model embodiment, rather than
It is limited；Although the utility model embodiment is described in detail with reference to foregoing embodiments, this area it is common
Technical staff should be understood：It can still modify to the technical scheme described in foregoing embodiments, or to wherein
Some or all of technical characteristic carries out equivalent substitution；And these are changed or are replaced, the essence of appropriate technical solution is not made
Depart from the scope of the utility model embodiment technical scheme.
Claims (8)
- A kind of 1. 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 include 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 are 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 to the control module for the state according to the household electrical appliance；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 are 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, for controlling the opening or closure of 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 are 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, for controlling the opening or closure of 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. according to the control circuit described in 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 is used to for the household electrical appliance provide operating voltage.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720645916.1U CN206757364U (en) | 2017-06-06 | 2017-06-06 | Control circuit and household appliance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720645916.1U CN206757364U (en) | 2017-06-06 | 2017-06-06 | Control circuit and household appliance |
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| CN206757364U true CN206757364U (en) | 2017-12-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107015513A (en) * | 2017-06-06 | 2017-08-04 | 浙江绍兴苏泊尔生活电器有限公司 | Control circuit, household appliance and power supply method of household appliance |
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2017
- 2017-06-06 CN CN201720645916.1U patent/CN206757364U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107015513A (en) * | 2017-06-06 | 2017-08-04 | 浙江绍兴苏泊尔生活电器有限公司 | Control circuit, household appliance and power supply method of household appliance |
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