CN110486757A - Control circuit and kitchen range - Google Patents
Control circuit and kitchen range Download PDFInfo
- Publication number
- CN110486757A CN110486757A CN201910837280.4A CN201910837280A CN110486757A CN 110486757 A CN110486757 A CN 110486757A CN 201910837280 A CN201910837280 A CN 201910837280A CN 110486757 A CN110486757 A CN 110486757A
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- Prior art keywords
- connect
- switch
- control
- normally closed
- coil
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C3/00—Stoves or ranges for gaseous fuels
- F24C3/12—Arrangement or mounting of control or safety devices
- F24C3/126—Arrangement or mounting of control or safety devices on ranges
Abstract
The application proposes a kind of control circuit and kitchen range, wherein control circuit, comprising: the first end of solenoid valve, including first coil and the second coil, the first end of first coil and the second coil is grounded；Thermocouple, the first pin of thermocouple and the second end of first coil connect；Negative pressure generation module；One end of first resistor, first resistor is connect with negative pressure generation module, and the other end is connect with the second end of the second coil；Normally closed type switch, one end of normally closed type switch and one end of first resistor connect, and the other end of normally closed type switch and the other end of first resistor connect, and normally closed type switch has controller；Control module is detected, is connect respectively with the first pin and controller, for when thermocouple heating temperature is not higher than the first temperature, controlling controller to disconnect normally closed type switch；When thermocouple heating temperature is higher than the first temperature, the automatic closure of normally closed type switch.The application can guarantee that solenoid valve is automatically closed in software failure, to improve safety.
Description
Technical field
This application involves kitchen range fields, in particular to control circuit and kitchen range.
Background technique
Gas cooker is the common kitchen user of family, and kitchen range burnt gas switch is usually solenoid valve, is inhaled after solenoid valves
Draw spool to control the intake valve of combustion gas and open, is resetted under spring force after solenoid valve power loss to close intake valve.
In the prior art, in order to enable kitchen range can close solenoid valve after flame-out immediately, using software active control electricity
Magnet valve, using software control method when, if software failure be easy to cause circuit malfunction, can not close in time solenoid valve generation
It is dangerous.
Therefore it provides a kind of control circuit independent of software improves stove in kitchen range Guan Huohou Self-shut electromagnetic valve
The safety of tool is this field urgent problem to be solved.
Summary of the invention
This application provides a kind of control circuit and kitchen range, for improving the safety of kitchen range.
To solve the above-mentioned problems, as the one aspect of the application, a kind of control circuit is provided, comprising:
Solenoid valve, including first coil and the second coil, the first end of the first end of the first coil and the second coil
Ground connection；
First pin of thermocouple, the thermocouple is connect with the second end of the first coil；
Negative pressure generation module, for providing negative pressure；
First resistor, one end of first resistor are connect with the negative pressure generation module, the other end of the first resistor with
The second end of second coil connects；
One end of normally closed type switch, the normally closed type switch is connect with one end of the first resistor, and the normally closed type is opened
The other end of pass is connect with the other end of the first resistor, and the normally closed type switch has controller；
Control module is detected, is connect respectively with first pin and the controller, for heated in the thermocouple
When temperature is not higher than the first temperature, the controller is controlled to disconnect the normally closed type switch；In the thermocouple heating temperature
When higher than the first temperature, the automatic closure of normally closed type switch.
Optionally, the normally closed type switch is normal closing type relay；
And/or
The detection control module includes: detection unit and control unit；
The detection unit is connect with first pin, and the detection unit is not higher than in the thermocouple heating temperature
When the first temperature, control signal is exported to control unit；
Described control unit is connect with the controller that the normally closed type switchs, for receiving the control signal time control
The controller is made, the controller is made to disconnect the normally closed type switch.
Optionally, the detection unit includes amplifier；
The in-phase end of the amplifier is grounded, and reverse side is connect with first pin；
The output end of the amplifier is connect with described control unit；
When the heating temperature of the thermocouple is not higher than the first temperature, the output end of the amplifier exports the control
Signal.
Optionally, the in-phase end of the amplifier is grounded by second resistance；
And/or the reverse side of the amplifier is connect by 3rd resistor with first pin；
And/or the reverse side of the amplifier is connected by the 4th resistance with output end.
Optionally, described control unit, including the first switch；The first switch have first end, second end and
Control terminal, the control terminal are connected with the detection unit, and the first end of the first switch connects to power supply；
When the control terminal receives the control signal, the first end and second end of the first switch is connected to；When
When the control terminal does not receive the control signal, the first end and second end of the first switch is disconnected；
Described controller one end is connect with the second end of the first switch, the other end ground connection of the controller.
Optionally, the first switch is that triode or mos are managed.
Optionally, further includes: diode, the diode cathode are connect with the second end of the first switch, and described two
The plus earth of pole pipe (7).
Optionally, the 5th resistance is provided on the connecting line of the control terminal of the first switch and the detection unit.
Optionally, further includes:
6th resistance, one end of the 6th resistance be connected to the 5th resistance and the first switch control terminal it
Between line on, the other end of the 6th resistance is connect with the power supply.
The application also proposes a kind of kitchen range, any control circuit proposed including the application.
Present applicant proposes a kind of control circuit and kitchen range, the application is proposed in control circuit and stove that the application proposes
Software control is not depended on, by the characteristic of hardware, can guarantee that solenoid valve is automatically closed in software failure, to improve peace
Quan Xing.
Detailed description of the invention
Fig. 1 is a kind of composition figure of control circuit in the embodiment of the present application；
Fig. 2 is the composition figure of another control circuit in the embodiment of the present application.
Detailed description of the invention: 1, solenoid valve；11, first coil；12, the second coil；2, normally closed type switchs；21, controller；3, hot
Galvanic couple；31, the first pin；4, negative pressure generation module；5, control module is detected；51, detection unit；511, amplifier；52, it controls
Unit；521, first switch；61, first resistor；62, second resistance；63,3rd resistor；64, the 4th resistance；65, the 5th electricity
Resistance；66, the 6th resistance；7, diode.
Specific embodiment
To keep the purposes, technical schemes and advantages of the application clearer, below in conjunction with the application specific embodiment and
Technical scheme is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the application one
Section Example, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall in the protection scope of this application.
It should be noted that the description and claims of this application and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so as to embodiments herein described herein can in addition to illustrating herein or
Sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that cover
Covering non-exclusive includes to be not necessarily limited to for example, containing the process, method of a series of steps or units, device, product or device
Step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, product
Or other step or units that device is intrinsic.
In the prior art, the gas inlet of kitchen range is patrolled by solenoid valve control particular by the software of control chip
Volume control, however it is larger for the dependence of software in this way, it is easy to cause kitchen range to stop working after-burning when software failure
Gas air inlet can not close, and cause gas leakage.
Fig. 1-Fig. 2 is please referred to, the application proposes that a kind of control circuit, the control circuit that the application proposes are used for kitchen range, packet
It includes:
Solenoid valve 1, including first coil 11 and the second coil 12, the first end of the first coil 11 and the second coil 12
First end ground connection；Specifically, solenoid valve is opened, stove when the first coil 11 of solenoid valve and the second 12 normal power-up of coil
The intake valve of tool can with normal ventilation, when the first coil 11 of solenoid valve and the second coil 12 all no powers or undertension,
Solenoid valve is closed, and the intake valve of kitchen range is closed.
First pin 31 of thermocouple 3, the thermocouple 3 is connect with the second end of the first coil 11；The thermoelectricity
Even 3 when heating temperature is higher than the first temperature, is the first coil 11 power supply by first pin 31；Specifically, hot
Galvanic couple 3 for detecting whether kitchen range light a fire, the first temperature for example with can be 60 DEG C, the thermocouple heating temperature when kitchen range are lit a fire
Electromotive force is generated higher than the first temperature, thermocouple 3 has the first pin and second pin, the first pin when thermocouple is heated
Electromotive force is lower than second pin, and second pin can be grounded.When thermocouple heating temperature is higher than the first temperature, first coil 11
Both ends generate enough voltage differences, therefore first coil 11 works normally
Negative pressure generation module 4, for providing negative pressure；First resistor 61, one end of first resistor 61 and the negative pressure generate
Module 4 connects, and the other end of the first resistor 61 is connect with the second end of second coil 12；
One end of normally closed type switch 2, the normally closed type switch is connect with one end of the first resistor 61, the normally closed type
The other end of switch 2 is connect with the other end of the first resistor 61, and the normally closed type switch 2 has controller 21, described normal
Closed switch 2 has controller 21；Specifically, the voltage difference at the both ends of the second coil 12 is equal to when normally closed type switch 2 is closed
The negative pressure that negative pressure generation module generates, the second coil 12 works normally at this time, and when normally closed type switch 2 disconnects, first resistor
Between 61 access negative pressure generation modules and the second coil 12, because of the partial pressure effect of first resistor 61, cause on the second coil 12
Undertension, so the second coil 12 will be unable to provide enough electromagnetic forces when normally closed type switch 2 disconnects, solenoid valve is closed
It closes.Optionally, the absolute value for the negative pressure that negative pressure generation module generates is equal to voltage when the second coil 12 works normally, that is,
Say that only enough second coils 12 work normally the pressure difference between negative pressure generation module and ground wire, once there is first resistor 61 to connect
Enter, then just not enough it is worked normally the partial pressure that the second coil 12 obtains, and optionally, the resistance value of first resistor 61 is the second coil 12
The 2 times or more of resistance value.
Control module 5 is detected, is connect respectively with first pin 31 and the controller 21, in the thermocouple
When 3 heating temperatures are not higher than the first temperature, the controller 21 is controlled to disconnect the normally closed type switch 2；In the thermocouple 3
When heating temperature is higher than the first temperature, the normally closed type switch 2 is closed automatically.
In this application, when stove is normally lit a fire, thermocouple 3 is heated in flame, and heating temperature is higher than the first temperature
When, thermocouple 3 is that first coil 11 is powered and worked normally, while normally closed type switch is closed automatically, so first resistor is short
Road, the both ends of the second coil have the voltage difference of enough normal works, and when stove stops working, flame extinction, thermocouple 3 is heated
Temperature is not higher than the first temperature, and the first pin 31 of thermocouple 3 can not provide the voltage that enough first coils 11 work, First Line
Circle stops working, while detecting control module 5 and controlling normally closed type switch disconnection, at this point, first resistor is connected with the second coil 12,
Due to the partial pressure effect of first resistor, the second coil 12 is unable to get enough voltage because without working.First coil 11 and
Two coil 12 does not work so solenoid valve is closed, to guarantee that the air inlet of stove is closed.
Optionally, the normally closed type switch 2 is normal closing type relay；Normally closed type relay in the case where no outer signals
Device remains closed.
Optionally, the detection control module 5 includes: detection unit 51 and control unit 52；The detection unit 51 with
First pin 31 connects, and the detection unit 51 is when 3 heating temperature of thermocouple is not higher than the first temperature, to control
The output control signal of unit 52；Described control unit 52 is connect with the controller of the normally closed type switch 2, for receiving
The controller 21 is controlled when stating control signal, the controller 21 is made to disconnect the normally closed type switch 2.
Optionally, the detection unit 51 includes amplifier 511；The in-phase end of the amplifier 511 is grounded, reverse side with
First pin 31 connects；The output end of the amplifier 511 is connect with described control unit 52；In the thermocouple 3
When heating temperature is not higher than the first temperature, the output end of the amplifier 511 exports the control signal.
Specifically, Fig. 2 can be referred to, the electromotive force of the first pin is lower than second pin, second pin when thermocouple 3 is heated
Ground connection, and when the heating temperature of thermocouple 3 is not higher than the first temperature (when stove is not lit a fire), thermocouple does not generate voltage,
Therefore amplifier exports low level, and the low level of amplifier output at this time is exactly to control signal, is controlled with the control signal normally closed
Formula switch 2 disconnects.
Optionally, the in-phase end of the amplifier 511 is grounded by second resistance 62；
Optionally, the reverse side of the amplifier 511 is connect by 3rd resistor 63 with first pin 31；
Optionally, the amplifier 511 can be operational amplifier, and the reverse side of the amplifier 511 passes through the 4th electricity
Resistance 64 is connected with output end.
Optionally, described control unit 52, including the first switch 521；The first switch 521 have first end,
Second end and control terminal, the control terminal are connected with the detection unit 51, the first end and power supply of the first switch 521
Connection；
When the control terminal receives the control signal, the first end and second end of the first switch 521 is connected to；
When the control terminal does not receive the control signal, the first end and second end of the first switch 521 is disconnected；The control
21 one end of device processed is connect with the second end of the first switch, the other end ground connection of the controller 21.Optionally, described first
Switch 521 is that triode or mos are managed.
Specifically, referring to FIG. 2, being selected at this time so that control circuit is triode with amplifier, first switch 521 as an example
PNP type triode is taken, PNP type triode receives low level control signal, collector and transmitting when thermocouple is not heated
Pole conducting, therefore controller 21 receives electric current and controls the disconnection of normally closed type switch 2, so that the partial pressure using first resistor 61 is imitated
Fruit makes the undertension on the second coil 12 without working, and when thermocouple heating temperature is higher than the first temperature, amplifier is defeated
The collector and emitter of high level out, PNP triode is not turned on, controller 21 must not electricity therefore normally closed type switch 2 keep close
It closes, first resistor 61 is short-circuited, the normal work once electrified of the second coil 12.
Optionally, further includes: the cathode of diode 7, the diode 7 is connect with the second end of the first switch, institute
State the plus earth of diode 7.21 both end voltage of controller can be prevented excessively high by diode 7.
Optionally, the 5th electricity is provided on the connecting line of the control terminal of the first switch 521 and the detection unit 51
Resistance 65.The input current of control terminal can be prevented excessive by the way that the 5th resistance 65 is arranged.
Optionally, further includes: one end of the 6th resistance 66, the 6th resistance 66 is connected to the 5th resistance 65 and institute
It states on the line between the control terminal of first switch 521, the other end of the 6th resistance 66 is connect with the power supply.At this time
Six resistance 66 and the 5th resistance 65 form bleeder circuit, to protect control terminal.
The application also proposes a kind of kitchen range, any control circuit proposed including the application.
In order to better illustrate the control circuit of the application proposition, referring to FIG. 2, when kitchen range light a fire work, thermocouple 3
It is heated in flame, heating temperature is higher than the first temperature to generate negative pressure, the both ends of first coil 11 on the first pin 31
It generates voltage difference and works normally, while the negative pressure on the first pin 31 flows into the reverse phase of amplifier 511 by 3rd resistor 63
End, because the in-phase end of amplifier 511 is grounded by second resistance 62, the output end of the amplifier 511 exports high level, high
Level flows to the control terminal of first switch 521 by the 5th resistance 65, and first switch is PNP type triode, thus collector and
Emit Extremally disconnected, therefore power supply is not connected to controller 21, normally closed type switch 2 remains closed at this time, therefore first resistor 61
It is short-circuited, the both ends of the second coil 12 are connect with ground wire and negative pressure generation module respectively, and the second coil 12 works normally, solenoid valve
It opens.And when kitchen range stop working, 3 heating temperature of thermocouple is not higher than the first temperature, so the first pin 31 cannot provide enough
The voltage that first coil 11 works normally, low level will be exported by simultaneously amplifying device 511, and low level is opened first switch 521 and made
Collector and emitter conducting, therefore one end of controller 21 is connected to other end ground connection, 21 work once electrified control of controller with power supply
Normally closed type switch 2 processed disconnects, and first resistor 61 is connected with the second coil 12 at this time, leads to the since first resistor 61 divide
The both end voltage of two coil 12 is insufficient, can not provide enough electromagnetic forces, cannot maintain attracting state, and solenoid valve is closed at this time.
Software control is not depended in the control circuit and stove that the application proposes, by the characteristic of hardware, can be protected in software failure
Card solenoid valve is automatically closed, to improve safety.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (10)
1. a kind of control circuit characterized by comprising
Solenoid valve (1), including first coil (11) and the second coil (12), the first end and the second line of the first coil (11)
Enclose the first end ground connection of (12)；
The first pin (31) of thermocouple (3), the thermocouple (3) is connect with the second end of the first coil (11)；
Negative pressure generation module (4), for providing negative pressure；
First resistor (61), one end of first resistor (61) are connect with the negative pressure generation module (4), the first resistor (61)
The other end connect with the second end of second coil (12)；
Normally closed type switchs (2), and one end of the normally closed type switch is connect with one end of the first resistor (61), the normally closed type
The other end of switch (2) is connect with the other end of the first resistor (61), and the normally closed type switch (2) has controller
(21)；
It detects control module (5), is connect respectively with first pin (31) and the controller (21), in the thermoelectricity
When even (3) heating temperature is not higher than the first temperature, the controller (21) is controlled to disconnect the normally closed type switch (2)；Institute
When stating thermocouple (3) heating temperature higher than the first temperature, the normally closed type switch (2) is closed automatically.
2. control circuit according to claim 1, which is characterized in that
The normally closed type switch (2) is normal closing type relay；
And/or
The detection control module (5) includes: detection unit (51) and control unit (52)；
The detection unit (51) connect with first pin (31), the detection unit (51) the thermocouple (3) by
When hot temperature is not higher than the first temperature, control signal is exported to control unit (52)；
Described control unit (52) is connect with the controller of normally closed type switch (2), for receiving the control signal
When control the controller (21), so that the controller (21) is disconnected normally closed type switch (2).
3. control circuit according to claim 2, which is characterized in that
The detection unit (51) includes amplifier (511)；
The in-phase end of the amplifier (511) is grounded, and reverse side is connect with first pin (31)；
The output end of the amplifier (511) is connect with described control unit (52)；
When the heating temperature of the thermocouple (3) is not higher than the first temperature, described in the output end output of the amplifier (511)
Control signal.
4. control circuit according to claim 3, which is characterized in that
The in-phase end of the amplifier (511) is grounded by second resistance (62)；
And/or the reverse side of the amplifier (511) is connect by 3rd resistor (63) with first pin (31)；
And/or the reverse side of the amplifier (511) is connected by the 4th resistance (64) with output end.
5. according to the described in any item control circuits of claim 2-4, which is characterized in that
Described control unit (52), including the first switch (521)；The first switch (521) has first end, second end
And control terminal, the control terminal are connected with the detection unit (51), the first end and power supply of the first switch (521) connect
It connects；
When the control terminal receives the control signal, the first end and second end of the first switch (521) is connected to；When
When the control terminal does not receive the control signal, the first end and second end of the first switch (521) is disconnected；
Described controller (21) one end is connect with the second end of the first switch, the other end ground connection of the controller (21).
6. control circuit according to claim 5, which is characterized in that
The first switch (521) is that triode or mos are managed.
7. control circuit according to claim 5 or 6, which is characterized in that further include:
The cathode of diode (7), the diode (7) is connect with the second end of the first switch, and the diode (7) is just
Pole ground connection.
8. according to the described in any item control circuits of claim 5-7, which is characterized in that
The 5th resistance (65) is provided on the control terminal of the first switch (521) and the connecting line of the detection unit (51).
9. control circuit according to claim 8, which is characterized in that further include:
One end of 6th resistance (66), the 6th resistance (66) is connected to the 5th resistance (65) and the first switch
(521) on the line between control terminal, the other end of the 6th resistance (66) is connect with the power supply.
10. a kind of kitchen range, which is characterized in that including the control circuit as described in claim 1-9 is any.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910837280.4A CN110486757A (en) | 2019-09-05 | 2019-09-05 | Control circuit and kitchen range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910837280.4A CN110486757A (en) | 2019-09-05 | 2019-09-05 | Control circuit and kitchen range |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110486757A true CN110486757A (en) | 2019-11-22 |
Family
ID=68556614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910837280.4A Pending CN110486757A (en) | 2019-09-05 | 2019-09-05 | Control circuit and kitchen range |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110486757A (en) |
-
2019
- 2019-09-05 CN CN201910837280.4A patent/CN110486757A/en active Pending
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