CN209245405U - A kind of controller of air inlet and fuel gas supply valve synchronously control - Google Patents
A kind of controller of air inlet and fuel gas supply valve synchronously control Download PDFInfo
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- CN209245405U CN209245405U CN201821763905.4U CN201821763905U CN209245405U CN 209245405 U CN209245405 U CN 209245405U CN 201821763905 U CN201821763905 U CN 201821763905U CN 209245405 U CN209245405 U CN 209245405U
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- fuel gas
- gas supply
- supply valve
- control
- mcu
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Abstract
The utility model discloses the controllers of a kind of air inlet and fuel gas supply valve synchronously control, and the problem of CO is poisoned is easy to produce when overcoming wall-hung boiler failure in the prior art.The signal output end of MCU is respectively connected to the working signal input terminal of fan power control module and fuel gas supply valve control module in the utility model, access VCC after the PB10_ST delivery outlet connection IN4 pin of ULN2003 chip of MCU, the driving coil of the OUT4 pin series connection air-blower control relay REL2 of ULN2003 chip in fan power control module, the IN1 pin of the PB11_ST delivery outlet connection ULN2003 chip of MCU in fuel gas supply valve control module, ULN2003 chip OUT1 pin series connection combustion gas control relay REL1 driving coil after access VCC.The power supply of the technology fan power and fuel gas supply valve forms chain control, to turn off wall-hung boiler fuel gas supply, avoiding burning away generates CO toxic gas, plays the role of safety guarantee.
Description
Technical field
The utility model relates to a kind of protective devices for hanging furnace safety in utilization, supply more particularly to a kind of air inlet and combustion gas
To the controller of valve synchronously control.
Background technique
Wall-hung boiler is the abbreviation of burnt gas wall hanging furnace, and full name is " fuel wall hanging formula heating stove ", is one kind using combustion gas as the energy
Water heater.Wall-hung boiler (also known as gas-heating water heater, reference can be made to GB25034-2010 " gas-heating water heater ") is with day
As fuel, fuel is exported through burner for right gas, artificial coal gas or liquefied gas, will by heat exchanger after burning in the combustion chamber
Heat absorption.Recirculated water in heating system carries out heat transfer by way of heat exchanger, and lasting heating is to continuous by heat
Ground is exported to building, provides heat source for building.The tap water flowed in heating system is by way of the indoor heat exchanger that burns
It heats up, warm water is used as domestic hot-water.Just because of there are the demands that continuous gas burns for wall-hung boiler, so safety is especially
It is important.Normal combustion process needs that fuel gas supply could be provided in the case where blower is opened, and wall-hung boiler mostly uses greatly at present
Blower and the separation control of fuel gas supply valve, the movement for being vented and burning without chain control, it is understood that there may be fan power failure
Afterwards, combustion gas continues to supply and cause the insufficient phenomenon of fuel gas buring, along with the consumption of indoor oxygen, if controlled not in time
System, indoor people will appear CO intoxication conditions, so as to cause safety accident.
Utility model content
The utility model is easy to produce CO intoxication conditions when overcoming wall-hung boiler failure in the prior art, provides a kind of air inlet
With the air inlet of fuel gas supply chain control and the controller of fuel gas supply valve synchronously control.
The technical solution of the utility model is to provide a kind of air inlet having following structure and fuel gas supply valve is same
It walks the controller of control: containing MCU, fan power control module, fan interface P2, fuel gas supply valve control module and combustion gas
Valve interface P1 is supplied, wherein the signal output end of MCU is respectively connected to fan power control module and the control of fuel gas supply valve door
The working signal input terminal of module, fan power control module contain MCU, ULN2003 chip and air-blower control relay REL2,
The PB10_ST delivery outlet of MCU connects the OUT4 pin series connection air-blower control of the IN4 pin of ULN2003 chip, ULN2003 chip
VCC is accessed after the driving coil of relay REL2, fuel gas supply valve control module contains MCU, ULN2003 chip and combustion gas control
The PB11_ST delivery outlet of relay REL1 processed, MCU connect the OUT1 pin of the IN1 pin of ULN2003 chip, ULN2003 chip
VCC is accessed after the driving coil of series connection combustion gas control relay REL1；The signal output end and wind of air-blower control relay REL2
AC220 power supply is accessed after machine interface P2 series connection；The signal output end of air-blower control relay REL2, combustion gas control relay REL1
Signal output end and fuel gas supply valve interface P1 three be sequentially connected in series after access AC220 power supply.
The end VCC of the COM pin connection power supply DC power supply of the ULN2003 chip, NC pin connect DC power supply
The end GND is successively parallel with electrolytic capacitor E5 and capacitor C1 between the end VCC and the end GND of DC power supply, wherein electrolytic capacitor E5
The end VCC of anode connection DC power supply.
The driving coil both ends shunt regulator diode D1 of the combustion gas control relay REL1, zener diode D1 is just
The end VCC of pole connection DC power supply.
Compared with prior art, the utility model air inlet and the controller of fuel gas supply valve synchronously control have following excellent
Point: after solving fan power failure, wall-mounted furnace controller can still open burnt gas valve, work on and cause exhaust gas that cannot lead to
Blower discharge is crossed, generates the harm of a large amount of CO indoors.If fan power generates failure, fan power and fuel gas supply valve
Power supply form chain control and to turn off wall-hung boiler fuel gas supply avoid a possibility that burning away, to avoid generating CO
Toxic gas plays the role of safety guarantee.The probability of safety accident is reduced, the economic loss as caused by safety accident is reduced.
Only in the case where fan power is opened, fuel gas supply valve can be just turned on, if fan power is in close state, no
How pipe fuel gas supply valve controls, and fuel gas supply valve will not all be powered, and will not be turned on.
Detailed description of the invention
Fig. 1 is the circuit connection structure signal of the controller of the utility model air inlet and fuel gas supply valve synchronously control
Figure；
Fig. 2 be the utility model air inlet and fuel gas supply valve synchronously control controller in ULN2003 chip it is interior
Portion's circuit logic structural schematic diagram；
Fig. 3 is the inside theory structure signal of the controller of the utility model air inlet and fuel gas supply valve synchronously control
Figure.
Specific embodiment
Contain following elements label in Detailed description of the invention, fan interface P2, fuel gas supply valve interface P1, combustion gas control relay
Device REL1, air-blower control relay REL2, chip ULN2003, zener diode D1, electrolytic capacitor E5 and capacitor C1.
With reference to the accompanying drawings and detailed description to the control of the utility model air inlet and fuel gas supply valve synchronously control
Device processed is described further.
As shown, containing MCU, fan power control module, fan interface P2, fuel gas supply valve gate in the present embodiment
Molding block and fuel gas supply valve interface P1, wherein the signal output end of MCU is respectively connected to fan power control module and combustion gas
The working signal input terminal of valve control module is supplied, fan power control module contains MCU, ULN2003 chip and blower control
The PB10_ST delivery outlet of relay REL2 processed, MCU connect the OUT4 pin of the IN4 pin of ULN2003 chip, ULN2003 chip
VCC is accessed after the driving coil of series connection air-blower control relay REL2, fuel gas supply valve control module contains MCU, ULN2003
Chip and combustion gas control relay REL1, IN1 pin, the ULN2003 core of the PB11_ST delivery outlet connection ULN2003 chip of MCU
VCC is accessed after the driving coil of the OUT1 pin series connection combustion gas control relay REL1 of piece；The letter of air-blower control relay REL2
AC220 power supply is accessed after number output end and fan interface P2 series connection；The signal output end of air-blower control relay REL2, combustion gas control
The signal output end of relay REL1 processed and fuel gas supply valve interface P1 three access AC220 power supply after being sequentially connected in series.
The end VCC of the COM pin connection power supply DC power supply of the ULN2003 chip, NC pin connect DC power supply
The end GND is successively parallel with electrolytic capacitor E5 and capacitor C1 between the end VCC and the end GND of DC power supply, wherein electrolytic capacitor E5
The end VCC of anode connection DC power supply.
The driving coil both ends shunt regulator diode D1 of the combustion gas control relay REL1, zener diode D1 is just
The end VCC of pole connection DC power supply.
Blower is the blower of 220V AC power source control, and when there is the input of 220V AC power source, blower is started turning, when
After 220V Ac Dump, blower stops operating；Fuel gas supply valve is the combustion gas switching valve of 220V AC power source control, when
When having alternating current 220V power input, valve conducting ventilation, after alternating current 220V dump, fuel gas supply valve is cut off, wall
It hangs furnace and stops gas supply；The power input that fuel gas supply combustion gas controls relay REL1 derives from the electricity of air-blower control relay REL2
Source output, therefore when fan power control is not turned on, even if fuel gas supply combustion gas control relay REL1 is opened,
Power supply output is not had, to there will not be fuel gas supply；Due to the power input of fuel gas supply combustion gas control relay REL1
Power supply from air-blower control relay REL2 exports, therefore when fan power is controlled and is connected, fuel gas supply combustion gas control
The on-off of relay REL1 processed, just can control the on-off of fuel gas supply valve, to control the fuel gas supply of wall-hung boiler, reach control
The purpose of system.
Chip ULN2003 is a 7 road Nverter circuits, i.e., when input terminal is high level, ULN2003A output end is low
Level, when input terminal is low level, ULN2003A output end is high configuration.Since ULN2003A is open collector output, it is
This diode is allowed to play the role of afterflow, it is necessary to connect COM pin (pin9) on the power supply of load, only in this way
It is capable of forming continuous current circuit.ULN2003 has only been applicable in two-way driver in this circuit, is used for wall for remaining 5 road driver
Hang the relay control of the circuits such as water pump, proportioning valve, the sectioning valve of furnace.
The on-off that fan power controls air-blower control relay REL2 is controlled by the port PB10_ST of MCU, to realize pair
The control of fan power.When in circuit PB10_ST export high level when, the output port OUT4 of ULN2003 integrated circuit with
GND conducting, to control air-blower control relay REL2 conducting, the firewire DY_FJ_L of fan power is connected to AC power source
Firewire AC220_L, so that fan power is accessed 220V AC power source, so that blower is opened；When the PB10_ST in circuit is defeated
Out when low level, open-drain output high-impedance state after the output port OUT4 and GND of ULN2003 integrated circuit is ended, to control
Air-blower control relay REL2 is ended, and the firewire DY_FJ_L of fan power and the firewire AC220_L of AC power source are disconnected,
To which fan power only has the zero curve AC220_N input of 220V AC power source, so that blower is closed.
Fuel gas supply valve door is controlled by the port PB11_ST of MCU and controls combustion gas control relay REL1, to realize to combustion
The control of gas supply valve power supply；When the PB11_ST in circuit exports high level, the output port of ULN2003 integrated circuit
OUT1 is connected with GND, to control combustion gas control relay REL1 conducting, DY_FJ_L is connected with DY_FM_L, only works as blower
When being opened, that is, when DY_FJ_L is connected with AC220_L, the power supply DY_FJ_L and AC220_L of fuel gas supply valve are connected,
The fuel gas supply valve of wall-hung boiler is opened, and provides fuel gas supply；If blower is closed, it is equal to DY_FJ_L and AC220_L
It is disconnected, regardless of what signal PB11_ST exports, fuel gas supply valve will not be all switched on.
When the PB11_ST in circuit exports low level, the output port OUT4 and GND of ULN2003 integrated circuit is cut
Open-drain output high-impedance state after only is ended to control combustion gas control relay REL1, and DY_FJ_L and DY_FM_L are disconnected, at this time
Whether pipe blower is not opened, and fuel gas supply valve will not be all switched on.
As shown in Fig. 2, the circuit diagram is the equivalent circuit diagram of ULN2003, the circuit is by triode, resistance and diode structure
At.After Input is high level in circuit, the combination NPN triode in circuit is switched on, and Output is connected with GND, and open-drain is defeated
Low resistance state out, so as to drive relay to be connected；Input is after low level, combination NPN triode is ended, Output open-drain
High configuration is exported, so that relay is turned off.So in a kind of wall-hung boiler blower chain control fuel gas supply valve circuit after
Electrical equipment drive can use ULN2003 integrated circuit, can also be built using resolution elements such as triode, resistance, diodes
Equivalent circuit.
It is described above be only the utility model preferred embodiment, be not intended to limit the utility model, it is all
It is practical new to should be included in this for any modifications, equivalent replacements, and improvements etc. done within the spirit and principles of the utility model
Within the protection scope of type.
Claims (3)
1. a kind of controller of air inlet and fuel gas supply valve synchronously control, it is characterised in that: controlled containing MCU, fan power
Module, fan interface P2, fuel gas supply valve control module and fuel gas supply valve interface P1, the wherein signal output end of MCU
It is respectively connected to the working signal input terminal of fan power control module and fuel gas supply valve control module, fan power controls mould
Block contains MCU, ULN2003 chip and the PB10_ST delivery outlet of air-blower control relay REL2, MCU connect ULN2003 chip
IN4 pin, ULN2003 chip OUT4 pin series connection air-blower control relay REL2 driving coil after access VCC, combustion gas supplies
Contain the PB11_ST delivery outlet connection of MCU, ULN2003 chip and combustion gas control relay REL1, MCU to valve control module
After the IN1 pin of ULN2003 chip, the driving coil of the OUT1 pin series connection combustion gas control relay REL1 of ULN2003 chip
Access VCC；AC220 power supply is accessed after signal output end and fan interface the P2 series connection of air-blower control relay REL2；Blower control
The signal output end of relay REL2 processed, combustion gas control the signal output end and fuel gas supply valve interface P1 tri- of relay REL1
Person accesses AC220 power supply after being sequentially connected in series.
2. the controller of air inlet and fuel gas supply valve synchronously control according to claim 1, it is characterised in that: described
The end VCC of the COM pin connection power supply DC power supply of ULN2003 chip, NC pin connect the end GND of DC power supply, direct current
It is successively parallel with electrolytic capacitor E5 and capacitor C1 between the end VCC and the end GND in source, wherein the anode connection direct current of electrolytic capacitor E5
The end VCC of power supply.
3. the controller of air inlet and fuel gas supply valve synchronously control according to claim 1, it is characterised in that: the combustion
The anode connection DC power supply of the driving coil both ends shunt regulator diode D1 of gas control relay REL1, zener diode D1
The end VCC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821763905.4U CN209245405U (en) | 2018-10-30 | 2018-10-30 | A kind of controller of air inlet and fuel gas supply valve synchronously control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821763905.4U CN209245405U (en) | 2018-10-30 | 2018-10-30 | A kind of controller of air inlet and fuel gas supply valve synchronously control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209245405U true CN209245405U (en) | 2019-08-13 |
Family
ID=67526267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821763905.4U Active CN209245405U (en) | 2018-10-30 | 2018-10-30 | A kind of controller of air inlet and fuel gas supply valve synchronously control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209245405U (en) |
-
2018
- 2018-10-30 CN CN201821763905.4U patent/CN209245405U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: No.19, IOT West Road, IOT Industrial Park, southwest aviation Economic Development Zone, Shuangliu District, Chengdu, Sichuan 610200 Patentee after: YOUAITE INSTRUMENT TECHNOLOGY CHENGDU Co.,Ltd. Address before: No. 303, 3rd floor, building 1, No. 8, Tianjiu North Lane, Chengdu high tech Zone, Chengdu, Sichuan 610041 Patentee before: YOUAITE INSTRUMENT TECHNOLOGY CHENGDU Co.,Ltd. |
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| CP02 | Change in the address of a patent holder |