CN105006956A - Rectifying and filtering circuit and electric appliance - Google Patents
Rectifying and filtering circuit and electric appliance Download PDFInfo
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- CN105006956A CN105006956A CN201510357462.3A CN201510357462A CN105006956A CN 105006956 A CN105006956 A CN 105006956A CN 201510357462 A CN201510357462 A CN 201510357462A CN 105006956 A CN105006956 A CN 105006956A
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- filtering circuit
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- 238000001914 filtration Methods 0.000 title claims abstract description 45
- 238000001514 detection method Methods 0.000 claims description 36
- 230000005611 electricity Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention discloses a rectifying and filtering circuit and an electric appliance. The rectifying and filtering circuit comprises: the input circuit (1), there is the first filter element on the input circuit (1); the output circuit (2), there are second filter element and rectification circuit on the output circuit (2); the input circuit (1) is communicated with the output circuit (2) through the filter inductor; the output circuit (2) is also provided with a discharge circuit (5), the discharge circuit (5) is connected with the second filter element in parallel, and the discharge circuit (5) comprises a switch for controlling the on-off of the discharge circuit (5). According to the rectifying and filtering circuit, the electric quantity consumption of the rectifying and filtering circuit during working can be reduced.
Description
Technical field
The present invention relates to technical field of electric appliances, in particular to a kind of current rectifying and wave filtering circuit and electrical equipment.
Background technology
General electrical equipment adds rectification circuit to all be needed by Electro Magnetic Compatibility EMC (Electro MagneticCompatibility) certification.
Fig. 1 is an easy forceful electric power filter rectifier, and this circuit comprises X electric capacity C3 and C4, filter inductance L1, discharge resistance R2, full-wave rectification bridge G1.Because on attaching plug, residual voltage needs lower than human safety voltage 36V after forceful electric power power down, therefore need to arrange discharge resistance R2 on circuit, to discharge the residual voltage in C3 and C4.But because always there is the power consumption of tens milliwatts in R2, an electrical equipment power consumption in month about 5 degree, if more than electrical equipment is with discharge resistance R2, if count the quantity of user in, total electricity that discharge resistance R2 consumes is also quite large, thus can cause unnecessary energy waste.
Summary of the invention
A kind of current rectifying and wave filtering circuit and electrical equipment are provided in the embodiment of the present invention, electric quantity consumption during current rectifying and wave filtering circuit work can be reduced.
For achieving the above object, the embodiment of the present invention provides a kind of current rectifying and wave filtering circuit, comprising: input circuit, input circuit is provided with the first filter element; Output circuit, output circuit is provided with the second filter element and rectification circuit; Filter inductance, input circuit is communicated with by filter inductance with output circuit; Output circuit is also provided with discharge circuit, and discharge circuit is in parallel with the second filter element, and discharge circuit comprises the switch of controlled discharge connecting and disconnecting of the circuit.
As preferably, switch is electric-controlled switch, and current rectifying and wave filtering circuit also comprises control circuit, and control circuit is connected to electric-controlled switch, and controls the operating state of electric-controlled switch.
As preferably, current rectifying and wave filtering circuit also comprises city's power detection circuit, and city's power detection circuit detects the city's signal of telecommunication on the electrical equipment of current rectifying and wave filtering circuit place, and detection signal is delivered to control circuit, control circuit receives detection signal, and controls the break-make of electric-controlled switch according to detection signal.
As preferably, electric-controlled switch is electromagnetic relay, and control circuit is connected to the coil of electromagnetic relay, and the first end of control circuit comprises power connector end, and the second end of control circuit is control the control end whether electromagnetic relay work.
As preferably, control circuit also comprises the electric capacity with coils from parallel connection of coils, control circuit is also in series with and makes circuit by power connector end to the one-way conduction unit of control end one-way conduction.
As preferably, city's power detection circuit comprises the first detecting element and second detecting element of series connection, and city's power detection circuit and the second filter element are arranged in parallel.
As preferably, rectification circuit is full-wave rectification bridge.
As preferably, the first filter element and the second filter element are electric capacity.
As preferably, discharge circuit also comprises the discharge resistance of connecting with switch.
According to a further aspect in the invention, provide a kind of electrical equipment, comprise current rectifying and wave filtering circuit, this current rectifying and wave filtering circuit is above-mentioned current rectifying and wave filtering circuit.
Apply technical scheme of the present invention, current rectifying and wave filtering circuit comprises: input circuit, input circuit is provided with the first filter element; Output circuit, output circuit is provided with the second filter element and rectification circuit; Filter inductance, input circuit is communicated with by filter inductance with output circuit; Output circuit is also provided with discharge circuit, and discharge circuit is in parallel with the second filter element, and discharge circuit comprises the switch of controlled discharge connecting and disconnecting of the circuit.Electrical equipment normally work or stand-by operation time, do not need to discharge to filter element, now can cut-off switch, discharge circuit cannot be energized, and now discharge circuit can not consumes power, power consumption when standby and work can be reduced, when electrical equipment deenergization, can turn on-switch, now discharging circuit conduction, filter element discharges through discharge circuit, can ensure the security performance that electrical equipment uses.
Accompanying drawing explanation
Fig. 1 is the structure principle chart of filter rectifier of the prior art;
Fig. 2 is the structure principle chart of the filter rectifier of the embodiment of the present invention.
Description of reference numerals: 1, input circuit; 2, output circuit; 3, control circuit; 4, city's power detection circuit; 5, discharge circuit.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail, but not as a limitation of the invention.
Shown in Figure 2, according to embodiments of the invention, current rectifying and wave filtering circuit comprises input circuit 1, output circuit 2 and filter inductance L1, input circuit 1 is provided with the first filter element, output circuit 2 is provided with the second filter element and rectification circuit, filter inductance L1 is arranged between input circuit 1 and output circuit 2, and is communicated with input circuit 1 and output circuit 2; Output circuit 2 is also provided with discharge circuit 5, and discharge circuit 5 is in parallel with the second filter element, and discharge circuit 5 comprises the switch of controlled discharge circuit 5 break-make.
Electrical equipment normally work or stand-by operation time, do not need to discharge to filter element, now can cut-off switch, discharge circuit 5 cannot be energized, and now discharge circuit 5 can not consumes power, power consumption when standby and work can be reduced, when electrical equipment deenergization, can turn on-switch, now discharge circuit 5 conducting, filter element discharges through discharge circuit 5, can ensure the security performance that electrical equipment uses.The attaching plug of electrical equipment is generally be inserted in for a long time on power supply, adopt this kind of current rectifying and wave filtering circuit, just can avoid discharge circuit 5 consumes power always when attaching plug is inserted on power supply, for Application comparison widely electrical equipment, by adopting this kind of current rectifying and wave filtering circuit, just significantly can reduce energy resource consumption, reach the effect of energy-conserving and environment-protective.
In the present embodiment, the first filter element and the second filter element are X electric capacity, and the first filter element is X electric capacity C3, and the second filter element is X electric capacity C4.
Discharge circuit 5 also comprises the discharge resistance R2 connected with K switch 2, and discharge resistance R2 can consume the residual voltage in electric capacity C3 and electric capacity C4, thus discharges to the participation electricity in current rectifying and wave filtering circuit.
K switch 2 can be hand switch, also can be automatic control switch, only needs to disconnect during in running order or holding state at electrical equipment by controlled discharge circuit, and connects under the state being in deenergization at electrical equipment.
Preferably, K switch 2, can automatically according to the operating state of the operating state adjustment discharge circuit of electrical equipment for having the switch of automatic control function, and more intelligent, operate also convenient, performance is more safe and reliable.
K switch 2 is such as electric-controlled switch, and current rectifying and wave filtering circuit also comprises control circuit 3, and control circuit 3 is connected to electric-controlled switch, and controls the operating state of electric-controlled switch.This control circuit 3 can make according to the state of electrical equipment that operating personnel are long-range to be controlled electric-controlled switch, thus controls the break-make of discharge circuit 5 easily, operates safe ready more.
Preferably, electric-controlled switch is electromagnetic relay, and control circuit 3 is connected to the coil of electromagnetic relay, and the first end of control circuit 3 comprises power connector end, and the second end of control circuit 3 is the control end whether control electromagnetic relay works.When the control end of control circuit 3 receives the control signal needing electromagnetic relay to connect, just to the coil electricity of electromagnetic relay, electromagnetic relay is closed, discharge circuit 5 is connected, and the electricity started storing in filter element discharges, when the control end of control circuit 3 receives the control signal needing electromagnetic relay to disconnect, just to the coil blackout of electromagnetic relay, electromagnetic relay is opened, and discharge circuit 5 disconnects, discharge circuit 5 not consumes power.Controlled discharge circuit 5 by electromagnetic relay, structure is more simple, controls more simple and convenient.
Because the discharge loop electric current of discharge resistance R2 and X electric capacity is very low, the sense of current is not fixed, and therefore K switch 2 can with having electrical isolation, two-way admittance and very little other components and parts such as two-way optocoupler of On current, the replacements such as metal-oxide-semiconductor.
In the present embodiment, current rectifying and wave filtering circuit also comprises city's power detection circuit 4, and city's power detection circuit 4 detects the city's signal of telecommunication on the electrical equipment of current rectifying and wave filtering circuit place, and detection signal is delivered to control circuit 3, control circuit 3 receives detection signal, and controls the break-make of electric-controlled switch according to detection signal.
Because this city's power detection circuit 4 can city's signal of telecommunication on Real-Time Monitoring electrical equipment, can the attaching plug of Real-time Obtaining electrical equipment whether still be connected on power supply, therefore accurately can control control circuit 3, and then the accurate control realized discharge circuit 5, make discharge circuit 5 when the attaching plug of electrical equipment is connected on power supply, remain off-state, not consumes power, discharge circuit 5 is after the attaching plug of electrical equipment pulls out, keep connected state, the electricity stored in filter element is discharged, improve the security performance of electrical equipment, thus ensure the energy-saving safe effect of electrical equipment better.
In the present embodiment, the control end of control circuit 3 and the output of city's power detection circuit 4 are all connected to computer, and carry out the process of information and the output of control signal by computer.City's power detection circuit 4 exports the signal detected to computer end, and then computer end processes signal, sends the control end controlling signal to control circuit 3 according to result, and then realizes controlling the break-make of discharge circuit 5.Computer herein also can substitute with controllers such as single-chip microcomputers.
Preferably, control circuit 3 also comprises the electric capacity C5 with coils from parallel connection of coils, control circuit 3 is also in series with and makes circuit by power connector end to the one-way conduction unit of control end one-way conduction.This one-way conduction unit is such as diode D1.This diode D1 can ensure when the power end of control circuit 3 is not powered that electric capacity is to the coil power supply of electromagnetic relay, and directly from the power connector end output voltage of control circuit 3, can not ensure the normal effectively work of electric capacity.
After the power connector end of control circuit 3 is stopped power supply, under the acting in conjunction of electric capacity C5 and diode D1, electromagnetic relay still can work on, thus ensures to allow discharge circuit 5 fully discharge.The continuous discharging time of electric capacity C5 is 1S herein, and the power connector end of control circuit 3 is connected to 12V DC power supply.Certainly, the voltage of electric capacity continuous discharging time herein and the power connector end of control circuit 3 can adjust according to the actual needs, is not limited to above-mentioned data.
City's power detection circuit 4 in the present embodiment comprises the first detecting element and second detecting element of series connection, city's power detection circuit 4 and the second filter element are arranged in parallel, the signal output part of city's power detection circuit 4 is between the first detecting element R1 and the second detecting element R3, even if can ensure that short circuit problem appears in one of them detecting element, city's power detection circuit 4 still normally works, and improves stability when city's power detection circuit 4 works and reliability.
Rectification circuit is full-wave rectification bridge G1, the terminals 2 and 3 of full-wave rectification bridge G1 are connected to the two ends of X electric capacity C4, and being formed in parallel with X electric capacity C4, terminals 4 ground connection of full-wave rectification bridge G1, the terminals 1 of full-wave rectification bridge G1 export the electric current after rectification as rectification output end.
When this current rectifying and wave filtering circuit works, if when city's power detection circuit 4 detects that electrical equipment normally works, send a signal to controller, controller is to detection signal Vdc process, and outputing control signals to the control end of control circuit 3, control switch K2 disconnects, and cuts off discharge circuit 5, discharge resistance R2 does not work, current rectifying and wave filtering circuit lower power consumption; When electrical equipment quits work, if city's power detection circuit 4 detects attaching plug also on power supply, send a signal to controller, controller is to detection signal Vdc process, and outputing control signals to the control end of control circuit 3, K switch 2 disconnects, and cuts off discharge circuit 5, discharge resistance R2 does not work, current rectifying and wave filtering circuit lower power consumption; When electrical equipment quits work and needs to pull out attaching plug, first the detection signal Vdc of city's power detection circuit 4 can detect that attaching plug is pulled out, now detection signal Vdc can be sent to controller, controller to detection signal Vdc process, and outputs control signals to the control end of control circuit 3, and control switch K2 closes, connect discharge circuit 5, discharge resistance R2 works, and discharges the participation electricity on X electric capacity C3 and C4, ensures the personal safety of staff.
This filter rectifier structure is simple, with low cost, and effectively can reduce power consumption, realizes effects of energy conservation and environmental protection.
According to embodiments of the invention, electrical equipment comprises current rectifying and wave filtering circuit, and this current rectifying and wave filtering circuit is above-mentioned current rectifying and wave filtering circuit.
Certainly, be more than the preferred embodiment of the present invention.It should be pointed out that for those skilled in the art, under the prerequisite not departing from its general principles, can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (10)
1. a current rectifying and wave filtering circuit, is characterized in that, comprising:
Input circuit (1), (1) is provided with the first filter element with described input circuit;
Output circuit (2), (2) are provided with the second filter element and rectification circuit with described output circuit;
Filter inductance, described input circuit (1) is communicated with by described filter inductance with described output circuit (2);
Described output circuit (2) is also provided with discharge circuit (5), described discharge circuit (5) is in parallel with described second filter element, and described discharge circuit (5) comprises the switch controlling described discharge circuit (5) break-make.
2. current rectifying and wave filtering circuit according to claim 1, it is characterized in that, described switch is electric-controlled switch, described current rectifying and wave filtering circuit also comprises control circuit (3), described control circuit (3) is connected to described electric-controlled switch, and controls the operating state of described electric-controlled switch.
3. current rectifying and wave filtering circuit according to claim 2, it is characterized in that, described current rectifying and wave filtering circuit also comprises city's power detection circuit (4), the city's signal of telecommunication on the electrical equipment of described current rectifying and wave filtering circuit place is detected in described city power detection circuit (4), and detection signal is delivered to described control circuit (3), described control circuit (3) receives described detection signal, and controls the break-make of described electric-controlled switch according to described detection signal.
4. current rectifying and wave filtering circuit according to claim 3, it is characterized in that, described electric-controlled switch is electromagnetic relay, described control circuit (3) is connected to the coil of described electromagnetic relay, the first end of described control circuit (3) comprises power connector end, and the second end of described control circuit (3) is the control end whether described electromagnetic relay of control works.
5. current rectifying and wave filtering circuit according to claim 4, it is characterized in that, described control circuit (3) also comprises the electric capacity with described coils from parallel connection of coils, described control circuit (3) is also in series with and makes described circuit by described power connector end to the one-way conduction unit of described control end one-way conduction.
6. current rectifying and wave filtering circuit according to claim 3, it is characterized in that, described city power detection circuit (4) comprises the first detecting element and second detecting element of series connection, and described city power detection circuit (4) and described second filter element are arranged in parallel.
7. current rectifying and wave filtering circuit according to claim 1, is characterized in that, described rectification circuit is full-wave rectification bridge.
8. current rectifying and wave filtering circuit according to claim 1, is characterized in that, described first filter element and described second filter element are electric capacity.
9. current rectifying and wave filtering circuit according to claim 1, is characterized in that, described discharge circuit (5) also comprises the discharge resistance of connecting with described switch.
10. an electrical equipment, comprises current rectifying and wave filtering circuit, it is characterized in that, the current rectifying and wave filtering circuit of described current rectifying and wave filtering circuit according to any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510357462.3A CN105006956B (en) | 2015-06-24 | 2015-06-24 | Rectifying and filtering circuit and electric appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510357462.3A CN105006956B (en) | 2015-06-24 | 2015-06-24 | Rectifying and filtering circuit and electric appliance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105006956A true CN105006956A (en) | 2015-10-28 |
| CN105006956B CN105006956B (en) | 2018-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510357462.3A Expired - Fee Related CN105006956B (en) | 2015-06-24 | 2015-06-24 | Rectifying and filtering circuit and electric appliance |
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| Country | Link |
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| CN (1) | CN105006956B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106817018A (en) * | 2015-12-02 | 2017-06-09 | 浙江绍兴苏泊尔生活电器有限公司 | Filter circuit and household appliance |
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| CN2050229U (en) * | 1989-04-19 | 1989-12-27 | 黄松波 | Battery charger with automatic stop function |
| CN1801589A (en) * | 2005-10-12 | 2006-07-12 | 珠海格力电器股份有限公司 | Direct-current power supply device and method for adjusting output power thereof |
| JP3867842B2 (en) * | 2001-11-08 | 2007-01-17 | オリジン電気株式会社 | Capacitor charging method and apparatus |
| CN101873073A (en) * | 2009-04-21 | 2010-10-27 | 冠捷投资有限公司 | AC to DC converter |
| CN202059193U (en) * | 2011-05-12 | 2011-11-30 | 深圳市航嘉驰源电气股份有限公司 | Capacitor discharging device |
| CN102457180A (en) * | 2010-11-01 | 2012-05-16 | 快捷韩国半导体有限公司 | Apparatus and method for discharging capacitor of input filter of power supply and power supply |
| CN103081322A (en) * | 2010-09-10 | 2013-05-01 | 富士电机株式会社 | Power supply integrated circuit device and power supply interruption detecting method |
| CN205051569U (en) * | 2015-06-24 | 2016-02-24 | 珠海格力电器股份有限公司 | Rectifying and filtering circuit and electric appliance |
-
2015
- 2015-06-24 CN CN201510357462.3A patent/CN105006956B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2050229U (en) * | 1989-04-19 | 1989-12-27 | 黄松波 | Battery charger with automatic stop function |
| JP3867842B2 (en) * | 2001-11-08 | 2007-01-17 | オリジン電気株式会社 | Capacitor charging method and apparatus |
| CN1801589A (en) * | 2005-10-12 | 2006-07-12 | 珠海格力电器股份有限公司 | Direct-current power supply device and method for adjusting output power thereof |
| CN101873073A (en) * | 2009-04-21 | 2010-10-27 | 冠捷投资有限公司 | AC to DC converter |
| CN103081322A (en) * | 2010-09-10 | 2013-05-01 | 富士电机株式会社 | Power supply integrated circuit device and power supply interruption detecting method |
| CN102457180A (en) * | 2010-11-01 | 2012-05-16 | 快捷韩国半导体有限公司 | Apparatus and method for discharging capacitor of input filter of power supply and power supply |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106817018A (en) * | 2015-12-02 | 2017-06-09 | 浙江绍兴苏泊尔生活电器有限公司 | Filter circuit and household appliance |
| CN106817018B (en) * | 2015-12-02 | 2020-10-09 | 浙江绍兴苏泊尔生活电器有限公司 | Filter circuit and household appliance |
Also Published As
| Publication number | Publication date |
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| CN105006956B (en) | 2018-06-19 |
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Granted publication date: 20180619 |