CN209245436U - The control device of automatic self-closing gas supply valve when a kind of wall-hung boiler failure - Google Patents
The control device of automatic self-closing gas supply valve when a kind of wall-hung boiler failure Download PDFInfo
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- CN209245436U CN209245436U CN201821763934.0U CN201821763934U CN209245436U CN 209245436 U CN209245436 U CN 209245436U CN 201821763934 U CN201821763934 U CN 201821763934U CN 209245436 U CN209245436 U CN 209245436U
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Abstract
The utility model discloses a kind of control devices of automatic self-closing gas supply valve when wall-hung boiler failure, the problem of overcoming in the prior art, still cannot stop working immediately under the wall-hung boiler fault condition of part.The utility model contains trigger module, breakdown judge module, valve folding execution module and MCU, the wherein input terminal of the output end connecting fault judgment module of trigger module, the input terminal of the output end connecting valve folding execution module of breakdown judge module, MCU will be switched on after working signal processing and be passed to the input terminal that valve opens and closes execution module by the IO output end of MCU, valve opens and closes the output end of execution module as fuel gas supply valve door control switch K1, and accesses in current supply circuit after fuel gas supply valve interface P4 series connection.In the technology in the presence of temperature, hydraulic pressure or blast switch, valve folding execution module will disconnect the driving power of relay coil, just stop fuel gas supply after fuel gas supply valve power loss.
Description
Technical field
The utility model relates to a kind of protective devices of wall-hung boiler safety in utilization, more particularly to a kind of wall-hung boiler failure
When automatic self-closing gas supply valve control device.
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
Important, must not especially ventilate after wall-hung boiler unit failure burning, either overheat, hydraulic pressure is too low or fan pressure not
Foot, cannot all ventilate ignition operation in the above failure scenario, it is likely that cause safety accident.
In the prior art, it when there are the failures such as wind pressure, hydraulic pressure or temperature anomaly due to part wall-hung boiler, still can ventilate
Work, thus cause exhaust gas cannot be discharged, dry combustion method or excessively heating etc. risks, so as to cause safety accident.
Utility model content
The utility model overcomes in the prior art, still cannot stop working immediately under the wall-hung boiler fault condition of part
Problem, the control device of automatic self-closing gas supply valve when a kind of structurally reasonable, highly-safe wall-hung boiler failure is provided.
The technical solution of the utility model is automatically closed when being to provide a kind of wall-hung boiler failure having following structure
The control device of fuel gas supply valve: containing trigger module, breakdown judge module, valve folding execution module and MCU, wherein touching
The input terminal of the output end connecting fault judgment module of module is sent out, the output end connecting valve folding of breakdown judge module executes mould
The input terminal of block, MCU are passed to the input of valve folding execution module by the IO output end of MCU after handling the working signal that is switched on
End, the output end that valve opens and closes execution module is fuel gas supply valve door control switch K1, and fuel gas supply valve interface P4 goes here and there
It is accessed in current supply circuit after connection, wherein trigger module contains power supply VCC, resistance R2, temperature detect switch (TDS) interface P1, blast switch interface
P2, hydraulic pressure switch interface P3, on-delay disconnect switch KT and grounding point GND, and power supply VCC is sequentially connected in series resistance R2, temperature
After controlling switch interface P1, blast switch interface P2, hydraulic pressure switch interface P3 and grounding point GND, on-delay disconnect switch KT with
Temperature detect switch (TDS) interface P1, the blast switch interface P2 and hydraulic pressure switch interface P3 being successively connected in series are connected in parallel, wherein trigger mode
The output end of block is the tie point of resistance R2 and hydraulic pressure switch interface P3；Breakdown judge module contains power supply VCC, resistance R1, electricity
R3 and breakdown judge triode Q1 is hindered, connecting fault judges the pole e of triode Q1, trigger module after power supply VCC series resistance R1
Output end series resistance R3 after connecting fault judge the pole b of triode Q1, wherein the output end of breakdown judge module is failure
Judge the pole c of triode Q1；Valve folding execution module contain fuel gas supply valve relay coil S1, zener diode D1,
The fuel gas supply valve relay coil S1 that the output end series connection of relay driving triode Q2, breakdown judge module are connected in parallel to each other
After zener diode D1, then the pole c of series relay driving triode Q2, the pole the b series electrical of relay driving triode Q2
The IO output end of MCU is connected after resistance R4, the pole e of relay driving triode Q2 connects grounding point GND.
The input terminal of the output end connection alarm module of the trigger module, alarm module contain power supply VCC, protective resistance
And buzzer, wherein power supply VCC accesses grounding point GND after being sequentially connected in series protective resistance and buzzer.
The input terminal of the trigger module is that on-delay disconnects the on-delay break contact of switch KT, closed type temperature control
Switch the interface P1 of normally-closed contact, the interface P2 of closed type blast switch normally-closed contact and closed type hydraulic pressure switch normally-closed contact
Interface P3.
The type of the breakdown judge triode Q1 and relay driving triode Q2 are NPN or PNP type triode.
The current supply circuit is alternating current 220V, and power supply VCC is+12V.
Compared with prior art, the control device of automatic self-closing gas supply valve has when the utility model wall-hung boiler failure
It has the advantage that in failures such as wall-hung boiler wind pressure, hydraulic pressure or temperature anomalies, machine test run is made by on-delay cut-off switch
Several seconds of row, then by the fault-signal of wall-hung boiler wind pressure, hydraulic pressure or temperature anomaly etc., to continue work of ventilating when solving failure
The drawbacks of.In the course of work, when any one in temperature switch, hydraulic pressure switch or blast switch issues the feelings of abnormal work signal
Under condition, valve folding execution module will disconnect the driving power of relay coil, and city's electrical circuit where fuel gas supply valve is just
Non-transformer input, just stop fuel gas supply, from cannot be discharged without exhaust gas, dry combustion method, excessively heating etc. risks, avoid making
At safety accident, so that the economic loss as caused by safety accident is reduced, casualties caused by reduction accident, higher peace
Full performance and then the sales volume that product can be improved.
Detailed description of the invention
The working principle of the control device of automatic self-closing gas supply valve is shown when Fig. 1 is the utility model wall-hung boiler failure
It is intended to；
The circuit connection knot of the control device of automatic self-closing gas supply valve when Fig. 2 is the utility model wall-hung boiler failure
Structure schematic diagram.
Specific embodiment
Contain following elements label, power supply VCC, resistance R1, resistance R3, resistance R2, temperature detect switch (TDS) interface in Detailed description of the invention
P1, blast switch interface P2, hydraulic pressure switch interface P3, valve interface P4, on-delay disconnect switch KT, grounding point GND and event
Barrier judges triode Q1, fuel gas supply valve relay coil S1, zener diode D1, relay driving triode Q2.
Automatic self-closing gas supply valve when with reference to the accompanying drawings and detailed description to the utility model wall-hung boiler failure
The control device of door is described further: in order to make the purpose of the utility model, technical solutions and advantages more clearly understood, with
The present invention will be further described in detail for lower combination attached drawing.It should be appreciated that specific embodiment described herein is only used
In explaining the utility model, it is not used to limit the utility model.
As shown, execution module and MCU are opened and closed containing trigger module, breakdown judge module, valve in the present embodiment,
The output end connecting valve folding of the input terminal of the output end connecting fault judgment module of middle trigger module, breakdown judge module is held
The input terminal of row module, MCU are passed to valve by the IO output end of MCU after handling the working signal that is switched on and open and close execution module
Input terminal, the output end that valve opens and closes execution module is fuel gas supply valve door control switch K1, and fuel gas supply valve interface
It is accessed in current supply circuit after P4 series connection, wherein trigger module contains power supply VCC, resistance R2, temperature detect switch (TDS) interface P1, blast switch
Interface P2, hydraulic pressure switch interface P3, on-delay disconnect switch KT and grounding point GND, and power supply VCC is sequentially connected in series resistance
After R2, temperature detect switch (TDS) interface P1, blast switch interface P2, hydraulic pressure switch interface P3 and grounding point GND, on-delay disconnects switch
KT and the temperature detect switch (TDS) interface P1, the blast switch interface P2 that are successively connected in series and hydraulic pressure switch interface P3 are connected in parallel, wherein touching
The output end for sending out module is the tie point of resistance R2 and hydraulic pressure switch interface P3；Breakdown judge module contains power supply VCC, resistance
R1, resistance R3 and breakdown judge triode Q1, connecting fault judges the pole e of triode Q1, triggering after power supply VCC series resistance R1
Connecting fault judges the pole b of triode Q1 after the output end series resistance R3 of module, and wherein the output end of breakdown judge module is
The pole c of breakdown judge triode Q1；Valve folding execution module contains fuel gas supply valve relay coil S1, zener diode
The fuel gas supply valve relay line that the output end series connection of D1, relay driving triode Q2, breakdown judge module are connected in parallel to each other
After enclosing S1 and zener diode D1, then the pole c of series relay driving triode Q2, the pole the b string of relay driving triode Q2
The IO output end of MCU is connected after connection resistance R4, the pole e of relay driving triode Q2 connects grounding point GND.
The input terminal of the output end connection alarm module of the trigger module, alarm module contain power supply VCC, protective resistance
And buzzer, wherein power supply VCC accesses grounding point GND after being sequentially connected in series protective resistance and buzzer.
The input terminal of the trigger module is that on-delay disconnects the on-delay break contact of switch KT, closed type temperature control
Switch the interface P1 of normally-closed contact, the interface P2 of closed type blast switch normally-closed contact and closed type hydraulic pressure switch normally-closed contact
Interface P3.
When temperature detect switch (TDS) measured temperature is not more than operating temperature, i.e., in the case where the maximum heating temperature of wall-hung boiler, temperature control
The normally-closed contact of switch is closed state, after temperature detect switch (TDS) measured temperature is greater than operating temperature, the normally closed touching of the temperature detect switch (TDS)
Point is off-state；
When the surveyed blower pressure of blast switch is higher than operating pressure, that is, in the case where the blower minimum pressure for allowing work,
The normally opened contact of the blast switch is closed state, after the surveyed blower pressure of blast switch is not more than operating pressure, the wind pressure
The normally opened contact of switch is off-state；
When the surveyed hydraulic pressure pressure of hydraulic pressure switch is higher than operating pressure, i.e., in the case where minimum allowable work water pressure, the hydraulic pressure
The normally opened contact of switch is closed state, after the surveyed hydraulic pressure pressure of hydraulic pressure switch is not more than operating pressure, the hydraulic pressure switch
Normally opened contact is off-state.
The type of the breakdown judge triode Q1 and relay driving triode Q2 are NPN or PNP type triode.
The current supply circuit is alternating current 220V, and power supply VCC is+12V.
The normally opened contact three of the normally-closed contact of temperature detect switch (TDS), the normally opened contact of blast switch and hydraulic pressure switch is sequentially connected in series
Connection.After opening on-delay disconnection switch KT, on-delay break contact can disconnect within the 5-10 second of setting, this
When, if the normally opened contact of the normally opened contact of the normally-closed contact of temperature detect switch (TDS), blast switch and hydraulic pressure switch reflect temperature,
Hydraulic pressure, wind pressure normal work signal condition when, wall-hung boiler will continue to work, if in the course of work, three above contact is anti-
Mirroring improper working signal state makes, and fuel gas supply valve can be the state for not working, not opening by circuit control at this time.
In the normal situation of working signal that temperature detect switch (TDS), hydraulic pressure switch, blast switch react in Fig. 2, resistance R3
It can be pulled down to grounding point GND with the current potential of the junction R2, breakdown judge triode Q1 is connected, when the output port of MCU
When MCU_IO is high level, relay driving triode Q2 conducting access grounding point GND.Fuel gas supply valve relay line at this time
One end of circle S1 can be connected to 12V DC power supply, and one end is connected to grounding point GND, to make fuel gas supply valve door control switch
K1 generates action signal, and fuel gas supply valve can be loaded into the AC power source of 220V, and fuel gas supply valve is opened；Work as MCU_IO
When exporting low level, relay driving triode Q2 is ended, and grounding point GND, relay driving coil S1 cannot be accessed
On do not have a current signal, fuel gas supply valve door control switch K1 does not have movement, and fuel gas supply valve will not access 220V friendship
Galvanic electricity source, to realize that combustion gas cannot supply.
It is deposited in an exceptional case when any one of in the working signal that temperature detect switch (TDS), hydraulic pressure switch, blast switch react,
The current potential of the junction resistance R3 and R2 will not be pulled down to grounding point GND, be equal to resistance R3 and R2 at this time and be directly connected to be followed by
Enter 12V DC electricity, so that breakdown judge triode Q1 is ended, regardless of MCU_IO exports which kind of level signal, fuel gas supply valve
One end of door relay coil S1 will not be connected to 12V DC power supply, thus fuel gas supply valve door control switch K1 will disconnect, from
And fuel gas supply valve will not access 220V AC power source, to realize that combustion gas cannot supply.
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 (5)
1. when a kind of wall-hung boiler failure automatic self-closing gas supply valve control device, it is characterised in that: containing trigger module,
Breakdown judge module, valve folding execution module and MCU, the wherein input of the output end connecting fault judgment module of trigger module
End, the input terminal of the output end connecting valve folding execution module of breakdown judge module, MCU, which will be switched on after working signal is handled, to be led to
The IO output end for crossing MCU is passed to the input terminal of valve folding execution module, and valve opens and closes the output end of execution module as combustion gas confession
It is accessed in current supply circuit after giving valve control switch K1, and fuel gas supply valve interface P4 series connection, wherein trigger module contains
Power supply VCC, resistance R2, temperature detect switch (TDS) interface P1, blast switch interface P2, hydraulic pressure switch interface P3, on-delay disconnect switch
KT and grounding point GND, power supply VCC are sequentially connected in series resistance R2, temperature detect switch (TDS) interface P1, blast switch interface P2, hydraulic pressure and open
After closing interface P3 and grounding point GND, temperature detect switch (TDS) interface P1, blast switch that on-delay disconnects switch KT and is successively connected in series
Interface P2 and hydraulic pressure switch interface P3 are connected in parallel, and wherein the output end of trigger module is resistance R2's and hydraulic pressure switch interface P3
Tie point；Breakdown judge module contains power supply VCC, resistance R1, resistance R3 and breakdown judge triode Q1, power supply VCC series electrical
Connecting fault judges the pole e of triode Q1 after resistance R1, and connecting fault judges three poles after the output end series resistance R3 of trigger module
The pole b of pipe Q1, wherein the output end of breakdown judge module is the pole c of breakdown judge triode Q1；Valve folding execution module contains
There is the output of fuel gas supply valve relay coil S1, zener diode D1, relay driving triode Q2, breakdown judge module
After fuel gas supply valve relay coil S1 and zener diode D1 that end series connection is connected in parallel to each other, then series relay drives three poles
The pole c of pipe Q2 connects the IO output end of MCU, three pole of relay driving after the pole the b series resistance R4 of relay driving triode Q2
The pole e of pipe Q2 connects grounding point GND.
2. the control device of automatic self-closing gas supply valve, feature exist when wall-hung boiler failure according to claim 1
In: the input terminal of the output end connection alarm module of the trigger module, alarm module contain power supply VCC, protective resistance and bee
Ring device, and wherein power supply VCC accesses grounding point GND after being sequentially connected in series protective resistance and buzzer.
3. the control device of automatic self-closing gas supply valve, feature exist when wall-hung boiler failure according to claim 1
In: the input terminal of the trigger module is on-delay break contact, the closed type temperature detect switch (TDS) that on-delay disconnects switch KT
The interface of the interface P1 of normally-closed contact, the interface P2 of closed type blast switch normally-closed contact and closed type hydraulic pressure switch normally-closed contact
P3。
4. the control device of automatic self-closing gas supply valve, feature exist when wall-hung boiler failure according to claim 1
In: the type of the breakdown judge triode Q1 and relay driving triode Q2 are NPN or PNP type triode.
5. the control device of automatic self-closing gas supply valve, feature exist when wall-hung boiler failure according to claim 1
In: the current supply circuit is alternating current 220V, and power supply VCC is+12V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821763934.0U CN209245436U (en) | 2018-10-30 | 2018-10-30 | The control device of automatic self-closing gas supply valve when a kind of wall-hung boiler failure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821763934.0U CN209245436U (en) | 2018-10-30 | 2018-10-30 | The control device of automatic self-closing gas supply valve when a kind of wall-hung boiler failure |
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| Publication Number | Publication Date |
|---|---|
| CN209245436U true CN209245436U (en) | 2019-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821763934.0U Active CN209245436U (en) | 2018-10-30 | 2018-10-30 | The control device of automatic self-closing gas supply valve when a kind of wall-hung boiler failure |
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| CN (1) | CN209245436U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111412487A (en) * | 2020-03-19 | 2020-07-14 | 济南红烛科技有限公司 | System and method capable of performing fuel oil leakage test after boiler MFT (Fuel oil temperature) |
| CN111765291A (en) * | 2020-07-08 | 2020-10-13 | 广州百畅信息科技有限公司 | Electromagnetic valve forced closing circuit system |
-
2018
- 2018-10-30 CN CN201821763934.0U patent/CN209245436U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111412487A (en) * | 2020-03-19 | 2020-07-14 | 济南红烛科技有限公司 | System and method capable of performing fuel oil leakage test after boiler MFT (Fuel oil temperature) |
| CN111765291A (en) * | 2020-07-08 | 2020-10-13 | 广州百畅信息科技有限公司 | Electromagnetic valve forced closing circuit system |
| CN111765291B (en) * | 2020-07-08 | 2022-08-02 | 厦门盈瑞丰电子科技有限公司 | Electromagnetic valve forced closing circuit system |
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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 |