CN105006956B - Rectifying and filtering circuit and electric appliance - Google Patents
Rectifying and filtering circuit and electric appliance Download PDFInfo
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- CN105006956B CN105006956B CN201510357462.3A CN201510357462A CN105006956B CN 105006956 B CN105006956 B CN 105006956B CN 201510357462 A CN201510357462 A CN 201510357462A CN 105006956 B CN105006956 B CN 105006956B
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- current rectifying
- wave filtering
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- 238000001914 filtration Methods 0.000 title claims abstract description 41
- 238000001514 detection method Methods 0.000 claims description 37
- 230000005611 electricity Effects 0.000 description 19
- 230000000694 effects Effects 0.000 description 4
- 238000007599 discharging Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000002955 isolation 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 electric appliance.
Background technology
General electric appliance by Electro Magnetic Compatibility EMC (Electro Magnetic Compatibility) certification in order to all be needed
Add rectification circuit.
Fig. 1 is an easy forceful electric power filter rectifier, this circuit includes X capacitances C3 and C4, filter inductance L1, electric discharge
Resistance R2, full-wave rectification bridge G1.Because residual voltage is needed less than human safety voltage 36V on attaching plug after forceful electric power power down,
Therefore it needs to set discharge resistance R2 on circuit, to discharge the residual voltage in C3 and C4.But because R2 is constantly present tens
The power consumption of milliwatt, 5 degree or so of electric appliance power consumption in one month, if more than one electric appliance carries discharge resistance R2, if counted in
The quantity of user, the total electricity that discharge resistance R2 is consumed is also quite big, thus can cause unnecessary energy waste.
Invention content
A kind of current rectifying and wave filtering circuit and electric appliance in the embodiment of the present invention are provided, can be reduced when current rectifying and wave filtering circuit works
Electric quantity consumption.
To achieve the above object, the embodiment of the present invention provides a kind of current rectifying and wave filtering circuit, including：Input circuit, input electricity
Road is provided with the first filter element；Output circuit is provided with the second filter element and rectification circuit on output circuit；Filtered electrical
Sense, input circuit are connected with output circuit by filter inductance；Discharge circuit, discharge circuit and are additionally provided on output circuit
Two filter elements are in parallel, and discharge circuit includes the switch of control discharge circuit break-make.
Preferably, switch is electric-controlled switch, current rectifying and wave filtering circuit further includes control circuit, and control circuit is connected to automatically controlled
Switch, and control the working condition of electric-controlled switch.
Preferably, current rectifying and wave filtering circuit further includes city's power detection circuit, city's power detection circuit detection current rectifying and wave filtering circuit
City's electric signal on the electric appliance of place, and detection signal is delivered to control circuit, control circuit receives detection signal, and according to inspection
Survey the break-make of signal control electric-controlled switch.
Preferably, electric-controlled switch is electromagnetic relay, control circuit is connected to the coil of electromagnetic relay, control circuit
First end include power connector end, the second end control terminal that whether electromagnetic relay works in order to control of control circuit.
Preferably, control circuit further includes the capacitance with coils from parallel connection of coils, being also in series in control circuit makes control circuit
By the one-way conduction unit of power connector end to control terminal one-way conduction.
Preferably, city's power detection circuit includes the first detecting element and the second detecting element of series connection, city's electro-detection electricity
Road is arranged in parallel with the second filter element.
Preferably, rectification circuit is full-wave rectification bridge.
Preferably, the first filter element and the second filter element are capacitance.
Preferably, discharge circuit is further included with switching the discharge resistance connected.
According to another aspect of the present invention, a kind of electric appliance is provided, including current rectifying and wave filtering circuit, which is
Above-mentioned current rectifying and wave filtering circuit.
It applies the technical scheme of the present invention, current rectifying and wave filtering circuit includes：Input circuit is provided with the first filter on input circuit
Wave element；Output circuit is provided with the second filter element and rectification circuit on output circuit；Filter inductance, input circuit and defeated
Go out circuit to connect by filter inductance；Discharge circuit is additionally provided on output circuit, discharge circuit is in parallel with the second filter element,
Discharge circuit includes the switch of control discharge circuit break-make.In electric appliance normal work or stand-by operation, do not need to filtering
Element discharges, and can disconnect switch at this time, and discharge circuit can not be powered, and discharge circuit will not consume electricity at this time, can be with
Reduce power consumption during standby and work, when electric appliance deenergization, switch can be connected, at this time discharging circuit conduction, filtering member
Part discharges through discharge circuit, it is ensured that the security performance that electric appliance uses.
Description of the drawings
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.
Reference sign：1st, input circuit；2nd, output circuit；3rd, control circuit；4th, city's power detection circuit；5th, electric discharge electricity
Road.
Specific embodiment
The present invention is described in further detail in the following with reference to the drawings and specific embodiments, but not as the limit to the present invention
It is fixed.
Shown in Figure 2, according to an embodiment of the invention, current rectifying and wave filtering circuit includes input circuit 1,2 and of output circuit
Filter inductance L1 is provided with the first filter element on input circuit 1, the second filter element and rectification is provided on output circuit 2
Circuit, filter inductance L1 are arranged between input circuit 1 and output circuit 2, and connect input circuit 1 and output circuit 2；Output
Discharge circuit 5 is additionally provided on circuit 2, discharge circuit 5 is in parallel with the second filter element, and discharge circuit 5 includes control electric discharge electricity
The switch of 5 break-make of road.
In electric appliance normal work or stand-by operation, do not need to discharge to filter element, can disconnect open at this time
It closing, discharge circuit 5 can not be powered, and discharge circuit 5 will not consume electricity at this time, can reduce power consumption during standby and work, when
During electric appliance deenergization, switch can be connected, discharge circuit 5 is connected at this time, and filter element discharges through discharge circuit 5, Ke Yibao
The security performance that card electric appliance uses.The attaching plug of electric appliance is usually inserted on power supply for a long time, using such current rectifying and wave filtering circuit,
Can to avoid when attaching plug is inserted on power supply discharge circuit 5 consume electricity always, for apply more extensive electric appliance
For, by using such current rectifying and wave filtering circuit, it will be able to energy consumption be greatly lowered, reach energy-saving and environment-friendly effect.
In the present embodiment, the first filter element and the second filter element are X capacitances, and the first filter element is X capacitances
C3, the second filter element are X capacitances C4.
Discharge circuit 5 further includes the discharge resistance R2 to connect with switch K2, and discharge resistance R2 can consume capacitance C3 and electricity
Hold the residual voltage in C4, so as to discharge the participation electricity in current rectifying and wave filtering circuit.
It can be manual switch to switch K2, or automatic control switch, it is only necessary to can control discharge circuit in electricity
Device is in running order or when standby mode disconnects, and connected in a state that electric appliance is in deenergization.
Preferably, switch K2 is the switch with automatic control function, can be adjusted automatically according to the working condition of electric appliance
The working condition of discharge circuit, more intelligent, operation is also more convenient, and performance is more safe and reliable.
It is, for example, electric-controlled switch to switch K2, and current rectifying and wave filtering circuit further includes control circuit 3, and control circuit 3 is connected to automatically controlled
Switch, and control the working condition of electric-controlled switch.The control circuit 3 can make operating personnel remotely to electricity according to the state of electric appliance
Control switch is controlled, so as to easily control the break-make of discharge circuit 5, operation more safe ready.
Preferably, electric-controlled switch is electromagnetic relay, and control circuit 3 is connected to the coil of electromagnetic relay, control circuit 3
First end include power connector end, the second end control terminal that whether electromagnetic relay works in order to control of control circuit 3.Work as control
When the control terminal of circuit 3 processed receives the control signal that electromagnetic relay is needed to connect, just it is powered to the coil of electromagnetic relay,
So that electromagnetic relay is closed, discharge circuit 5 is connected, starts to discharge to the electricity stored in filter element, when control electricity
When the control terminal on road 3 receives the control signal that electromagnetic relay is needed to disconnect, just to the coil blackout of electromagnetic relay so that
Electromagnetic relay is opened, and discharge circuit 5 disconnects, and discharge circuit 5 does not consume electricity.By electromagnetic relay to discharge circuit 5 into
Row control, structure is simpler, controls simpler convenience.
Since the discharge loop electric current of discharge resistance R2 and X capacitances is very low, current direction is not fixed, thus switch K2 can be with
With replacements such as the such as two-way optocoupler of other components with electrical isolation, bidirectional conduction and conducting electric current very little, metal-oxide-semiconductors.
In the present embodiment, current rectifying and wave filtering circuit further includes city's power detection circuit 4, and city's power detection circuit 4 detects rectification filter
City's electric signal where wave circuit on electric appliance, and detection signal is delivered to control circuit 3, control circuit 3 receives detection signal,
And according to the break-make of detection signal control electric-controlled switch.
City's electric signal on electric appliance can be monitored in real time due to city's power detection circuit 4, the electricity of electric appliance can be obtained in real time
Whether source plug is remained attached on power supply, therefore control circuit 3 accurately can be controlled, and then is realized to discharge circuit
5 accurate control so that discharge circuit 5 remains off-state, do not disappear when the attaching plug of electric appliance is connected on power supply
Power consumption, discharge circuit 5 keep connected state, to the electricity stored in filter element after the attaching plug of electric appliance pulls out
It discharges, improves the security performance of electric appliance, so as to better ensure that the energy-saving safe effect of electric appliance.
In the present embodiment, the output terminal of the control terminal of control circuit 3 and city's power detection circuit 4 is connected to computer,
And pass through computer into the processing of row information and the output of control signal.City's power detection circuit 4 exports the signal detected to electricity
Brain end, then computer end signal is handled, according to handling result send out control signal to control circuit 3 control terminal, into
And it realizes and the break-make of discharge circuit 5 is controlled.Computer herein can also be substituted with controllers such as microcontrollers.
Preferably, control circuit 3 further includes the capacitance C5 with coils from parallel connection of coils, be also in series in control circuit 3 make circuit by
Power connector end to control terminal one-way conduction one-way conduction unit.The one-way conduction unit is, for example, diode D1.Two pole
Pipe D1 can ensure coil power supply of the capacitance to electromagnetic relay when the power end of control circuit 3 is not powered, without direct
From the power connector end output voltage of control circuit 3, ensure normal effective work of capacitance.
After the power connector end of control circuit 3 stops power supply, under the collective effect of capacitance C5 and diode D1, electromagnetism
Relay remains able to work on, so as to ensure to allow discharge circuit 5 fully to discharge.Herein during the continuous discharge of capacitance C5
Between for 1S, the power connector end of control circuit 3 is connected to 12V DC power supply.Certainly, capacitance continuous discharging time herein and
The voltage of the power connector end of control circuit 3 can be adjusted according to the actual needs, it is not limited to above-mentioned data.
City's power detection circuit 4 in the present embodiment includes the first detecting element and the second detecting element of series connection, city's electric-examination
Slowdown monitoring circuit 4 is arranged in parallel with the second filter element, and the signal output end of city's power detection circuit 4 is located at the first detecting element R1 and
Between two detecting element R3, it is ensured that even if short circuit problem occurs in one of detecting element, city's power detection circuit 4 is still just
Often work improves stability and reliability when city's power detection circuit 4 works.
Rectification circuit is full-wave rectification bridge G1, and the terminals 2 and 3 of full-wave rectification bridge G1 are connected to the both ends of X capacitances C4, and
Formed with X capacitances C4 in parallel, the terminals 4 of full-wave rectification bridge G1 are grounded, and the terminals 1 of full-wave rectification bridge G1 are exported as rectification
Electric current after the output rectification of end.
When the current rectifying and wave filtering circuit works, if city's power detection circuit 4 detects electric appliance normal work, signal is sent
To controller, controller outputs control signals to the control terminal of control circuit 3 to detecting signal Vdc processing, and control is opened
It closes K2 to disconnect, cuts off discharge circuit 5, discharge resistance R2 does not work, current rectifying and wave filtering circuit lower power consumption；When electric appliance is stopped
When, if city's power detection circuit 4 detects attaching plug also on power supply, controller is sent a signal to, controller believes detection
Number Vdc processing, and the control terminal of control circuit 3 is output control signals to, switch K2 is disconnected, and cuts off discharge circuit 5, electric discharge
Resistance R2 does not work, current rectifying and wave filtering circuit lower power consumption；When electric appliance is stopped and needs to pull out attaching plug, city's electric-examination
The detection signal Vdc of slowdown monitoring circuit 4 can detect that attaching plug is unplugged first, can detection signal Vdc be sent to control at this time
Device, controller output control signals to the control terminal of control circuit 3 to detecting signal Vdc processing, and control switch K2 is closed
It closes, connects discharge circuit 5, discharge resistance R2 work discharges the participation electricity on X capacitances C3 and C4, ensures staff's
Personal safety.
The filter rectifier is simple in structure, of low cost, and can effectively reduce power consumption, realizes effects of energy conservation and environmental protection.
According to an embodiment of the invention, electric appliance includes current rectifying and wave filtering circuit, which filters for above-mentioned rectification
Wave circuit.
Certainly, it is above the preferred embodiment of the present invention.It should be pointed out that for those skilled in the art
For, under the premise of general principles are not departed from, several improvements and modifications can also be made, these improvements and modifications
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of current rectifying and wave filtering circuit, which is characterized in that including：
Input circuit (1) is provided with the first filter element on the input circuit (1)；
Output circuit (2) is provided with the second filter element and rectification circuit on the output circuit (2)；
Filter inductance, the input circuit (1) are connected with the output circuit (2) by the filter inductance；
Discharge circuit (5) is additionally provided on the output circuit (2), the discharge circuit (5) and second filter element are simultaneously
Connection, switch of the discharge circuit (5) including controlling discharge circuit (5) break-make；
The switch is electric-controlled switch, and the current rectifying and wave filtering circuit further includes control circuit (3), control circuit (3) connection
To the electric-controlled switch, and control the working condition of the electric-controlled switch；
The current rectifying and wave filtering circuit further includes city's power detection circuit (4), and city's power detection circuit (4) detects the rectifying and wave-filtering
City's electric signal where circuit on electric appliance, and detection signal is delivered to the control circuit (3), the control circuit (3) connects
The detection signal is received, and the break-make of the electric-controlled switch is controlled according to the detection signal, wherein：
Whether city's power detection circuit (4) detection electric appliance works normally and whether attaching plug is connected on power supply；
When city's power detection circuit (4) detects that electric appliance works normally, and attaching plug is connected on power supply, disconnection is opened
It closes, cut-out discharge circuit (5), control discharge circuit (5) is in not discharge condition；
When city's power detection circuit (4) detects that electric appliance is stopped, and attaching plug is additionally attached on power supply, disconnection is opened
It closes, cut-out discharge circuit (5), control discharge circuit (5) is in the state do not discharged；
When city's power detection circuit (4) detects that electric appliance is stopped, and attaching plug is not attached on power supply, closure is opened
It closes, conducting discharge circuit (5), control filter element discharges through discharge circuit (5).
2. current rectifying and wave filtering circuit according to claim 1, which is characterized in that the electric-controlled switch be electromagnetic relay, institute
The coil that control circuit (3) is connected to the electromagnetic relay is stated, the first end of the control circuit (3) is connected including power supply
End, the second end control terminal that whether electromagnetic relay works in order to control of the control circuit (3).
3. current rectifying and wave filtering circuit according to claim 2, which is characterized in that the control circuit (3) further include with it is described
The capacitance of coils from parallel connection of coils, being also in series on the control circuit (3) makes the control circuit (3) by the power connector end to institute
State the one-way conduction unit of control terminal one-way conduction.
4. current rectifying and wave filtering circuit according to claim 1, which is characterized in that city's power detection circuit (4) includes series connection
The first detecting element and the second detecting element, city's power detection circuit (4) is arranged in parallel with second filter element.
5. current rectifying and wave filtering circuit according to claim 1, which is characterized in that the rectification circuit is full-wave rectification bridge.
6. current rectifying and wave filtering circuit according to claim 1, which is characterized in that first filter element and second filter
Wave element is capacitance.
7. current rectifying and wave filtering circuit according to claim 1, which is characterized in that the discharge circuit (5) further include with it is described
Switch the discharge resistance of series connection.
8. a kind of electric appliance, including current rectifying and wave filtering circuit, which is characterized in that the current rectifying and wave filtering circuit is to appoint in claim 1 to 7
Current rectifying and wave filtering circuit described in one.
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 CN105006956A (en) | 2015-10-28 |
| CN105006956B true 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 |
Country Status (1)
| Country | Link |
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| CN (1) | CN105006956B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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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 |
| 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 |
| 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101873073A (en) * | 2009-04-21 | 2010-10-27 | 冠捷投资有限公司 | AC-DC converter |
| JP5664654B2 (en) * | 2010-09-10 | 2015-02-04 | 富士電機株式会社 | Power supply control circuit and power supply control method |
-
2015
- 2015-06-24 CN CN201510357462.3A patent/CN105006956B/en not_active Expired - Fee Related
Patent Citations (6)
| 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 |
| 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 |
| 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 |
| 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 |
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| CN105006956A (en) | 2015-10-28 |
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Granted publication date: 20180619 |