CN106369212B - A kind of driving circuit for electromagnetic valve for gas burning system - Google Patents
A kind of driving circuit for electromagnetic valve for gas burning system Download PDFInfo
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- CN106369212B CN106369212B CN201611078473.9A CN201611078473A CN106369212B CN 106369212 B CN106369212 B CN 106369212B CN 201611078473 A CN201611078473 A CN 201611078473A CN 106369212 B CN106369212 B CN 106369212B
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- circuit
- driving
- valve
- driving circuit
- electromagnetic valve
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
Abstract
The invention discloses a kind of driving circuit for electromagnetic valve for gas burning system, it is characterized by comprising a control unit and several driving chips, several driving circuit for electromagnetic valve are integrated in the driving chip, described control unit receives control signal and selects to be sent to the driving chip, the driving chip for receiving control signal controls corresponding driving circuit for electromagnetic valve work, and output drive signal drives corresponding electromagnetic switch valve.The present invention simplifies circuitry design by integrated magnet valves driving circuit, simplifies pcb board wiring, reduces and be exposed to outer solder joint, improve the reliability and safety of system entirety, and the scalability for making circuit is more preferably, be suitable for the needs of practical application.
Description
Technical field
The present invention relates to a kind of driving circuit for electromagnetic valve more particularly to a kind of solenoid-driven electricity for gas burning system
Road.
Background technique
Gas appliance includes gas-cooker, gas heater etc., has become very universal household appliances at present.Its core
Gas burning system includes multiple solenoid valve modules, wherein electromagnetic switch valve is opened to combustion gas transmission pipeline at different levels in control system
It opens and turns off, play the role of a steam linkage and duplicate protection；Gas ratio valve is the regulating valve of combustion gas and AIR Proportional,
Its main function is to stablize proportioning valve output pressure and adjust proportioning valve output pressure according to input current, can make to fire by adjusting
Gas burning is sufficiently, energy saving environmental.Meanwhile by the ratio of combustion gas in pipeline in proportional valve control use, i.e., to combustion
The control of throughput can be achieved to Gas appliance combustion state, high fire, moderate heat, small fire in initial stage fired state and combustion process
The control of equal different conditions.
Design solenoid these states need to control by microcontrollers such as MCU, but MCU driving capability itself compared with
It is weak, solenoid valve can not be directly driven, therefore needs to connect driving circuit between microcontroller and solenoid valve.
In order to realize above-mentioned driving function, at present in gas burning system control circuit board mainly with triode, resistance, capacitor,
The discrete devices such as diode realize the driving of solenoid valve, and discrete device circuit structure is as shown in Figure 1, the structure passes through reception
The control signal of MCU carrys out drive magnetic valve.The working principle that MCU controls solenoid valve is as follows:
(1) Tu Zhong first part is power failure monitor part, controls signal by MCU to control and whether detect power supply
Normally, to ensure the trouble free service of circuit.When supply voltage normal power supply, and driving tube Q12 is worked normally, when no damage, MCU
Input high level, so that 24V supply voltage gives lower section each road drive circuitry by driving tube Q12.At this point, power failure is examined
Survey end output be it is low, it is normal (power failure monitor output par, c as 5V DC-voltage supply) to represent power supply power supply.When input electricity
When extruding existing exception or driving tube Q12 damage, power failure monitor end output state will be height by low jump, feed back to control unit
Divide MCU, MCU control disconnects power supply power supply, while showing power failure.
(2) MV1, SV1, SV2 are three electromagnetic switch valves, and when normal work only exists the two states of on and off, mainly
For controlling being switched on and off for gas pipeline access at different levels in entire gas burning system, the abnormal leakage of combustion gas is prevented.It drives
Structure is similar, and when power failure monitor output is without exception, 24V direct current power source voltage is via tri- road electromagnetism of driving tube Q12 Gei Gai
Switch valve drive circuitry, and signal is controlled to realize the control to three electromagnetic switch valves by MCU.
(3) BLF is electromagnetic proportional valve, its working condition is not limited only to be switched on and off two states when normal work, it
The aperture of valve port can be given according to the size of applied driving current, and can constantly carry out fine nothing according to the variation of electric current
Grade is adjusted, and can immediately be adjusted to required combustion gas output pressure.Pipeline in work is controlled by electromagnetic proportional valve with this
Interior combustion gas passes through flow, and then to control the combustion state outside gas appliance.
(4) when driving electromagnetic proportional valve (BLF), corresponding road driving needs external proportioning valve current feedback electricity
Road, the partial circuit are made of RC filter structure and external sampling resistor, carry out sampling prison to the driving current of electromagnetic proportional valve
Control.
Component needed for discrete device scheme is more, and pcb board wiring is complicated, and solder joint is more (exposure solder joint about more than 100),
Debugging bothers, and encounters in practical application hardly expansible when the solenoid valve for needing to drive more numbers.
Summary of the invention
It is an object of the present invention to provide a kind of driving circuit for electromagnetic valve for gas burning system to be simplified by the improvement of structure
Pcb board wiring, reduces pcb board area, improves the integrated level and reliability of circuit, increase expansible in practical application
Property.
In order to achieve the above objectives, the technical solution adopted by the present invention is that: a kind of solenoid-driven electricity for gas burning system
Road, including a control unit and several driving chips are integrated with several driving circuit for electromagnetic valve, institute in the driving chip
It states control unit to receive control signal and select to be sent to the driving chip, receives the driving chip control of control signal
Corresponding driving circuit for electromagnetic valve work is made, output drive signal drives corresponding electromagnetic switch valve.
Include driving chip described in two panels in above-mentioned technical proposal, is integrated with two respectively in each driving chip
Way solenoid valve driving circuit and a power failure detection circuit, an over-voltage detection circuit and power failure monitor output electricity
Road, the output end of every driving circuit for electromagnetic valve described all the way are simultaneously connected to a freewheeling diode.
Further technical solution is, the test side of the power failure detection circuit and over-voltage detection circuit respectively with institute
The power end connection of driving chip is stated, the power work status signal that will test passes through the power failure monitor output circuit
It is sent to the feedback end of described control unit.
In above-mentioned technical proposal, in driving circuit for electromagnetic valve described in two-way, the NPN that is mainly made of all the way two triodes
Type Darlington driving structure composition, control terminal are connect with control unit；Another way is mainly by a PNP triode and three
NPN triode forms positive-negative-positive Darlington driving structure composition, and the base terminal for the NPN triode for accessing importation simultaneously connects
There are at least three concatenated diodes.
In above-mentioned technical proposal, a proportioning valve feed circuit is additionally provided in the driving chip, the proportioning valve feed circuit
It is made of filter circuit and sampling resistor, the control signal output connection of input control end and described control unit is elected to
When leading to the proportioning valve feed circuit, an output end of the driving circuit for electromagnetic valve described all the way in the driving chip with it is described
The connection of proportioning valve feedback circuit output；When the not gated proportioning valve feed circuit, the driving circuit for electromagnetic valve on the road
One output end ground connection.
Further technical solution is driving circuit for electromagnetic valve described in two-way, is all the way ordinary electromagnetic valve-driving circuit, outside
Electromagnetic switch valve is connect, another way is compatible electromagnetism valve-driving circuit, which is external electromagnetic switch valve
Or electromagnetic proportional valve, in the proportioning valve feed circuit access compatible electromagnetism valve-driving circuit, the compatible electromagnetism valve
Driving circuit is circumscribed with electromagnetic proportional valve.
In above-mentioned technical proposal, the input, output end of each circuit and power supply, power ground are connect in the driving chip
Enter esd protection structure.
In above-mentioned technical proposal, current foldback circuit, thermal-shutdown circuit are also integrated in the driving chip.
Due to the above technical solutions, the present invention has the following advantages over the prior art:
1. the driving circuit of drive magnetic valve is integrated in several chips by the present invention, inputted by control unit MCU
Signal controls the working condition of driving circuit drive magnetic valve, and compared with previous discrete device scheme, the consistency of circuit is obtained
Raising has been arrived, and has solved the problems such as debugging trouble due to the numerous brings of device, interfere with each other, while simplifying complete machine electricity
Road design simplifies pcb board wiring, reduces pcb board area, improve the integrated level and reliability of circuit, reduces entire
The installation complexity of combustion gas circuit system, reduces the cost of entire gas burning system.
2. largely reducing since driving circuit uses integrated chip design and being exposed to outer solder joint on pcb board, about can be reduced
70% solder joint number, to effectively increase the reliability and safety coefficient of system entirety.
3. controlling the design scheme of multiple driving chips using control unit, use can be increased or decreased according to actual needs
Driving circuit number and driving port number, are rapidly performed by extension adaptation, more convenient and efficient.
4. being integrated with power failure detection circuit, over-voltage detection circuit, current foldback circuit, overheat protector in driving circuit
Circuit can also increase the protection circuit of congruence property in the chips, to improve the reliability and safety that circuit uses；
5. being integrated with proportioning valve current feedback circuit in driving chip, according to actual needs, pass through periphery connection
Mode gates driving electromagnetic switch valve and electromagnetic proportional valve, realizes the compatible driving of control unit；
6. design has freewheeling diode in every road driving chip, when for inductive loads such as drive magnetic valves from protect and make
With, while the input in each circuit, output and power supply, power ground access esd protection structure, prevent static discharge to entire
It is damaged caused by circuit, improves the safety of circuit.
Detailed description of the invention
Fig. 1 is the electrical block diagram in background of invention；
Fig. 2 is the circuit structure block diagram of the embodiment of the present invention one；
Fig. 3 is the circuit structure block diagram in the embodiment of the present invention one inside driving chip.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and embodiments:
Embodiment one: referring to fig. 2, shown in 3, a kind of driving circuit for electromagnetic valve for gas burning system, including a control are single
First MCU and several driving chips are integrated with several driving circuit for electromagnetic valve in the driving chip, and described control unit connects
It receives control signal and selects to be sent to the driving chip, the driving chip for receiving control signal controls corresponding electromagnetism
Valve-driving circuit work, output drive signal drive corresponding electromagnetic switch valve.
In the present embodiment, as shown in Fig. 2, by control unit MCU (108) input control signal to integrated drive chips
(107), the inner driving circuit of control driving chip (107) opens and closes electromagnetic switch valve or controls the unlatching of electromagnetic proportional valve
Closing ratio state.
Include inside driving chip (107) as described in Figure 2: power failure detection circuit (101), over-voltage detection circuit
(102), power failure monitor output circuit (103), driving circuit for electromagnetic valve -1 (104), driving circuit for electromagnetic valve -2 (105),
Proportioning valve current feedback circuit (106).Every road driving interior design has freewheeling diode (D40, D50), is used for drive magnetic valve
It shields when equal inductive loads.Meanwhile circuit modules are all designed in input, output and power supply, power ground ESD
Protect structure, it is ensured that the reliability of circuit.
Power work state that power failure detection circuit (101) and over-voltage detection circuit (102) will test (it is normal or
Failure) feed back to control unit MCU (108) by power failure monitor output circuit (103).If detecting power supply fault-free,
Power supply normal power supply, control unit MCU (108) input control signal control the working condition of each solenoid valve.If detecting electricity
Source failure then disconnects 24V power supply power supply, and shows power failure；
Two chips (107) are used simultaneously in the present embodiment, as shown in figure 3, specific as follows:
1. power failure detection circuit (101): this is one and is typically driven by positive-negative-positive Darlington driving structure and NPN pipe
The driving structure of dynamic composition, by resistance R11~R18, NPN pipe Q11, Q13, Q14, Q15, PNP pipe Q12 and diode D10,
D11, D12, DN composition, wherein D10 is freewheeling diode, and DN represents n concatenated diodes, designs n >=1, n can be according to input
The design requirement of voltage range is changed.The control signal for receiving MCU (108) input by Power_EN, according to control signal
To control the unlatching and disconnection of power supply.When a power failure is detected, detection signal exports (103) by power failure monitor
Power_Judge is fed back to MCU (108), and MCU (108) control disconnects 24V power supply power supply.
2. over-voltage detection circuit (102): this is the over-voltage detection module typically realized according to electric resistance partial pressure principle,
By resistance R21~R24, NPN pipe Q22, PNP pipe Q21 composition, wherein the resistance ratio of R21, R22 determine over-voltage test point
Position.Independent 5V DC-voltage supply is designed, when detecting supply voltage over-voltage, detection signal passes through power failure monitor
Output (103) Power_Judge is fed back to MCU (108), and MCU (108) control disconnects 24V power supply power supply.
3. power failure monitor output circuit (103): power failure monitor output par, c by resistance R31, NPN pipe Q31,
Q32 composition.When power supply normal power supply, power failure monitor exports (103) Power_Judge output for height, when power failure is examined
(101) or over-voltage detection (102) any detection are surveyed when being out of order, power failure monitor exports (103) Power_Judge output will
It is low for being jumped by height, which feeds back to MCU (108), and MCU (108) control disconnects 24V power supply power supply.Show that power supply supplies
Electric fault needs reparing.When detecting power failure, MCU (108) control guarantees that each solenoid valve is in and closes shape
State, it is ensured that combustion gas uses safe.
4. solenoid-driven -1 (104) (ordinary electromagnetic valve-driving circuit): by resistance R41~R43, NPN pipe Q41, Q42 with
And diode D40 composition, it is a typical NPN type Darlington driving structure, diode D40 is freewheeling diode, for driving
It shields when the inductive loads such as moving electromagnetic valve.MCU (108) controls electromagnetism by SV1_Drive input control signal
The open and close state of switch valve.
5. solenoid-driven -2 (105) (compatible electromagnetism valve-driving circuit): by resistance R51~R55, PNP pipe Q52, NPN pipe
Q51, Q53, Q54 and diode D50, D51, D52 and DM composition, DM represent n concatenated diodes, design n >=1, n can root
It is changed according to the design requirement of input voltage range.The structure is a typical positive-negative-positive Darlington driving structure, diode
D50 is freewheeling diode, for shielding when the inductive loads such as drive magnetic valve.Solenoid-driven -2 can be compatible with drive
Dynamic electromagnetic switch valve and electromagnetic proportional valve.When driving electromagnetic switch valve, CON4 is shorted in external demand and GND4；When driving electromagnetism ratio
When example valve, it is connected inside CON4 with proportioning valve current feedback circuit (106), I_FB is that proportioning valve current feedback circuit (106) are defeated
Enter control terminal.MCU (108) controls open and close or the electromagnetism ratio of electromagnetic switch valve by SV2_Drive input control signal
The unlatching ratio state of example valve.
6. proportioning valve current feedback circuit (106): being made of resistance R61~R63, capacitor C61, C62, when solenoid valve drives
When dynamic -2 circuits (105) driving electromagnetic proportional valve, it need to connect and detection control is carried out to driving output electric current using the module.
Claims (7)
1. a kind of driving circuit for electromagnetic valve for gas burning system, it is characterised in that: including a control unit and several drivings
Chip, several driving circuit for electromagnetic valve are integrated in the driving chip, and described control unit receives control signal and simultaneously selects
It is sent to the driving chip, the driving chip for receiving control signal controls corresponding driving circuit for electromagnetic valve work,
Output drive signal drives corresponding electromagnetic switch valve；A proportioning valve feed circuit, the ratio are additionally provided in the driving chip
Valve feed circuit is made of filter circuit and sampling resistor, the control signal output at input control end and described control unit
Connection, when gating the proportioning valve feed circuit, one of the driving circuit for electromagnetic valve described all the way in the driving chip is defeated
Outlet is connect with the proportioning valve feedback circuit output；When the not gated proportioning valve feed circuit, the solenoid valve on the road
One output end of driving circuit is grounded.
2. the driving circuit for electromagnetic valve according to claim 1 for gas burning system, it is characterised in that: include two panels institute
Driving chip is stated, is integrated with two-way driving circuit for electromagnetic valve and a power failure monitor in each driving chip respectively
Circuit, an over-voltage detection circuit and a power failure monitor output circuit, the output end per the driving circuit for electromagnetic valve described all the way
And it is connected to a freewheeling diode.
3. the driving circuit for electromagnetic valve according to claim 2 for gas burning system, it is characterised in that: the power failure
The test side of detection circuit and over-voltage detection circuit is connect with the power end of the driving chip respectively, the power supply work that will test
Make the feedback end that status signal is sent to described control unit by the power failure monitor output circuit.
4. the driving circuit for electromagnetic valve according to claim 2 for gas burning system, it is characterised in that: electromagnetism described in two-way
In valve-driving circuit, the NPN type Darlington driving structure being mainly made of all the way two triodes is formed, control terminal and control
Unit connection；Another way mainly forms positive-negative-positive Darlington driving structure by a PNP triode and three NPN triodes and forms,
It accesses the NPN transistor base end of importation and is connected at least three concatenated diodes.
5. the driving circuit for electromagnetic valve according to claim 1 for gas burning system, it is characterised in that: electromagnetism described in two-way
Valve-driving circuit is all the way ordinary electromagnetic valve-driving circuit, external electromagnetic switch valve, and another way is compatible electromagnetism electrohydraulic valve actuator
Road, which is external electromagnetic switch valve or electromagnetic proportional valve, when the proportioning valve feed circuit accesses
In the compatible electromagnetism valve-driving circuit, the compatible electromagnetism valve-driving circuit is circumscribed with electromagnetic proportional valve.
6. the driving circuit for electromagnetic valve according to claim 1 or 2 for gas burning system, it is characterised in that: the driving
The input, output end of each circuit and power supply, power ground access esd protection structure in chip.
7. the driving circuit for electromagnetic valve according to claim 1 for gas burning system, it is characterised in that: the driving chip
In be also integrated with current foldback circuit, thermal-shutdown circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611078473.9A CN106369212B (en) | 2016-11-30 | 2016-11-30 | A kind of driving circuit for electromagnetic valve for gas burning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611078473.9A CN106369212B (en) | 2016-11-30 | 2016-11-30 | A kind of driving circuit for electromagnetic valve for gas burning system |
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| Publication Number | Publication Date |
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| CN106369212A CN106369212A (en) | 2017-02-01 |
| CN106369212B true CN106369212B (en) | 2018-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611078473.9A Active CN106369212B (en) | 2016-11-30 | 2016-11-30 | A kind of driving circuit for electromagnetic valve for gas burning system |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108895190B (en) * | 2018-08-15 | 2023-10-03 | 中山市铧禧电子科技有限公司 | Control driving circuit compatible with various proportional valves |
| CN110925477A (en) * | 2019-12-25 | 2020-03-27 | 南京劲淳自动化科技有限公司 | Integrated form solenoid valve control module group |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201247402Y (en) * | 2008-06-03 | 2009-05-27 | 上海芙蓉实业有限公司 | Controller for gas stove |
| CN102401169A (en) * | 2010-09-10 | 2012-04-04 | 广东万和新电气股份有限公司 | Drive circuit of main solenoid valve of gas water heater |
| CN202709476U (en) * | 2012-05-31 | 2013-01-30 | 广东百威电子有限公司 | Control system of constant-temperature gas water heater |
| JP2015152160A (en) * | 2014-02-19 | 2015-08-24 | リンナイ株式会社 | solenoid valve drive circuit |
| CN105222175A (en) * | 2015-10-30 | 2016-01-06 | 广州惠远电子有限公司 | Gas-cooker intelligence control system |
-
2016
- 2016-11-30 CN CN201611078473.9A patent/CN106369212B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201247402Y (en) * | 2008-06-03 | 2009-05-27 | 上海芙蓉实业有限公司 | Controller for gas stove |
| CN102401169A (en) * | 2010-09-10 | 2012-04-04 | 广东万和新电气股份有限公司 | Drive circuit of main solenoid valve of gas water heater |
| CN202709476U (en) * | 2012-05-31 | 2013-01-30 | 广东百威电子有限公司 | Control system of constant-temperature gas water heater |
| JP2015152160A (en) * | 2014-02-19 | 2015-08-24 | リンナイ株式会社 | solenoid valve drive circuit |
| CN105222175A (en) * | 2015-10-30 | 2016-01-06 | 广州惠远电子有限公司 | Gas-cooker intelligence control system |
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| CN106369212A (en) | 2017-02-01 |
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Address after: 214135 -6, Linghu Avenue, Wuxi Taihu international science and Technology Park, Wuxi, Jiangsu, China, 180 Patentee after: China Resources micro integrated circuit (Wuxi) Co., Ltd Address before: No. 180-22, Linghu Avenue, Taihu International Science and Technology Park, New District, Wuxi City, Jiangsu Province, 214135 Patentee before: WUXI CHINA RESOURCES SEMICO Co.,Ltd. |
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