CN110469875A - Control circuit and kitchen range - Google Patents
Control circuit and kitchen range Download PDFInfo
- Publication number
- CN110469875A CN110469875A CN201910837896.1A CN201910837896A CN110469875A CN 110469875 A CN110469875 A CN 110469875A CN 201910837896 A CN201910837896 A CN 201910837896A CN 110469875 A CN110469875 A CN 110469875A
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- coil
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- control unit
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- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 238000001514 detection method Methods 0.000 claims description 23
- 239000000567 combustion gas Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 230000007257 malfunction Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Combustion (AREA)
Abstract
The application proposes a kind of control circuit and kitchen range, wherein control circuit, comprising: thermocouple, including the first pin；Negative pressure generation module, for generating negative pressure；Solenoid valve, including first coil and the second coil；One end of first coil is grounded, and the other end of first coil and the first pin of thermocouple connect；Second coil one end ground connection, the other end of the second coil are connected with negative pressure generation module；Detect control module, it is connect respectively with the first pin, the other end of the second coil and positive voltage source, for when thermocouple heating temperature is not higher than the first temperature, the other end of second coil is connected to positive voltage source, when thermocouple heating temperature is higher than the first temperature, the other end of the second coil and positive voltage source are disconnected.The application improves the safety of kitchen range.
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, the safety for improving kitchen range 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:
Thermocouple, including the first pin；
Negative pressure generation module, for generating negative pressure；
Solenoid valve, including first coil and the second coil；One end of the first coil is grounded, the first coil it is another
One end is connect with the first pin of the thermocouple；Second coil one end ground connection, the other end of second coil and institute
State the connection of negative pressure generation module；
Control module is detected, connect, is used for first pin, the other end of the second coil and positive voltage source respectively
When the thermocouple heating temperature is not higher than the first temperature, the other end of second coil and the positive voltage source are connected
It is logical, when the thermocouple heating temperature is higher than the first temperature, the other end of second coil and positive voltage source are disconnected.
Optionally, control module is detected, comprising: detection unit and control unit；
The detection unit is connect with first pin and described control unit respectively, for according to first pin
On voltage to described control unit send control signal；
Described control unit, respectively with the positive voltage source, the other end of second coil and the detection unit
It is connected, for controlling the on-off between the positive voltage source and the other end of second coil according to the control signal.
Optionally, the detection unit includes amplifier, and the output end of the amplifier is connect with described control unit, institute
An input terminal for stating amplifier is connect with first pin, defeated to described control unit by the output end of the amplifier
Signal is controlled out；
And/or described control unit includes first switch, the first switch has first end, second end and control terminal；
The first end is connect with the other end of the second coil, and the second end is connect with the positive voltage source；The control terminal and institute
Detection unit connection is stated, for receiving the control signal, to control the on-off between first end and second end.
Optionally, the first switch is that triode or mos are managed；
And/or first resistor is provided in the connection line of the detection unit and described control unit.
Optionally, the non-inverting input terminal ground connection of the amplifier, inverting input terminal are connect with first pin；
The output end of the amplifier is connect with described control unit.
Optionally, described control unit includes first switch, and the first switch is PNP type triode.
The reverse inter-input-ing ending grounding of the amplifier, non-inverting input terminal are connect with first pin；
The output end of the amplifier is connect with described control unit.
Optionally, described control unit includes first switch, and the first switch is NPN type triode.
Optionally, the input terminal being grounded on the amplifier is grounded by second resistance；
And/or the input terminal of the first pin is connected on the amplifier and is connect by 3rd resistor with first pin；
And/or the inverting input terminal of the amplifier is connected by the 4th resistance with output end.
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 proposes the control circuit and stove that the application proposes,
Make the electric current in the second coil reversed when flame-out, so that the intake valve of combustion gas is closed, in the control circuit 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；21, first resistor；22, second resistance；23,
3rd resistor；24, the 4th resistance；21, controller；3, thermocouple；31, the first pin；4, negative pressure generation module；5, detection control
Module；51, detection unit；511, amplifier；52, control unit；521, first switch.
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 opening and closing for passing through solenoid valve control gas inlet valve on kitchen range, particular by control chip
Software logic control, however it is larger for the dependence of software in this way, be easy to cause kitchen range when software failure
Combustion gas intake valve can not close after flame-out, cause gas leakage.
Fig. 1 and Fig. 2 are please referred to, the application proposes a kind of control circuit, is preferred for kitchen range, comprising:
Thermocouple 3, including the first pin 31；
Specifically, thermocouple 3 has the first pin and second pin, thermocouple is used to detect the flame on kitchen range, in stove
When normally lighting a fire on tool, voltage difference is generated between the first pin and second pin of thermocouple 3, the electromotive force on the first pin is low
In second pin, second pin can be grounded, and generate negative pressure on the first pin if thermocouple is heated at this time.
Negative pressure generation module 4, for generating negative pressure；
Solenoid valve 1, including first coil 11 and the second coil 12；One end of the first coil 11 is grounded, and described first
The other end of coil 11 is connect with the first pin 31 of the thermocouple 3；Second coil, 12 one end ground connection, second line
The other end of circle 12 and the negative pressure generation module 4 connection；Specifically, when thermocouple is heated between the first pin 31 and ground wire
Voltage difference, therefore 11 work once electrified of first coil are generated, in this application, when first coil 11 and the second coil 12 all obtain electrician
Solenoid valve opens the intake valve of combustion gas when making, when first coil and the second coil all must not electricity or solenoid valve closes when abnormal power supply
Close the intake valve of combustion gas.
Control module 5 is detected, is connected respectively with first pin 31, the other end of the second coil 12 and positive voltage source
Connect, for 3 heating temperature of thermocouple be not higher than the first temperature when, by the other end of second coil 12 and it is described just
Voltage source connection, when 3 heating temperature of thermocouple is higher than the first temperature, by the other end and positive pressure of second coil 12
Power supply disconnects.
Specifically, fire source heats thermocouple, when thermocouple 3 is heated, the two of first coil 11 when kitchen range are normally lit a fire
End generates voltage difference, 11 work once electrified of first coil, and detection control module 5 makes the other end of the second coil 12 and positive voltage source
It disconnects, therefore the potential of the other end of the second coil 12 is equal to the electromotive force of negative pressure generation module output, i.e., the second coil is another
The electromotive force of one end is lower than one end of the second coil 12 ground connection, and the both ends of the second coil 12 generate voltage difference, and the second coil obtains electric
Work, therefore solenoid valve maintains the inlet open of combustion gas, and when kitchen range stop working, the heating temperature of thermocouple 3 gradually decreases,
When being reduced to the first temperature or less, undertension on the first pin 31 of thermocouple 3 for the normal work of first coil 11,
When the heating temperature of thermocouple 3 is reduced to room temperature, the both ends of first coil 11 no longer have voltage difference, therefore first coil 11
It does not work, meanwhile, the other end that detection control module 5 controls the second coil 12 is connected to positive voltage source, so the second coil
The potential of the other end is higher than one end of the second coil ground connection, logical when the energization direction on the second coil is worked normally with it at this time
Electricity is contrary, and opposite current direction will generate opposite electromagnetic force, therefore the first coil of solenoid valve and the second coil are all
It does not work, solenoid valve closes the intake valve of combustion gas.
In some alternative embodiments, Fig. 2 is please referred to, control module 5 is detected, comprising: detection unit 51 and control are single
Member 52；The detection unit 51 is connect with first pin 31 and described control unit 52 respectively, for according to described first
Voltage on pin 31 sends control signal to described control unit 52；
Described control unit 52, it is single with the positive voltage source, the other end of second coil and the detection respectively
Member 51 is connected, for being controlled between the positive voltage source and the other end of second coil 12 according to the control signal
On-off.
In some alternative embodiments, the detection unit 51 includes amplifier 511, the output of the amplifier 511
End is connect with described control unit 52, and an input terminal of the amplifier 511 is connect with first pin 31, by described
The output end of amplifier exports control signal to described control unit 52；
The first pin can access the non-inverting input terminal or reverse input end of amplifier 511 according to specific circumstances.
In some alternative embodiments, described control unit 52 includes first switch 521, and the first switch 521 has
There are first end, second end and control terminal；The first end is connect with the other end of the second coil 12, the second end and it is described just
Voltage source connection；The control terminal is connect with the detection unit 51, for receiving the control signal, to control first end
On-off between second end.Optionally, the first switch 521 is that triode or mos are managed.
Optionally, first resistor 21, the first electricity are provided in the connection line of the detection unit and described control unit
Resistance 21 is used for current limliting, and the electric current for the control signal for preventing detection unit 51 from exporting is excessive to burn control unit.
In some alternative embodiments, the non-inverting input terminal ground connection of the amplifier 511, inverting input terminal and described the
The connection of one pin 31；The output end of the amplifier 511 is connect with described control unit 52.
Specifically, please referring to Fig. 2, when kitchen range are lit a fire, thermocouple 3 is heated when the first pin 31 generates negative pressure, because
The non-inverting input terminal of amplifier (such as operational amplifier) is grounded, therefore the potential of inverting input terminal is equal to equal to noninverting input
Zero, the potential of output end is higher than reverse input end, and output end will export high level, in order to keep first switch 521 for disconnection shape
State, optionally, described control unit 52 include first switch 521, and the first switch is PNP type triode.PNP type triode
When base stage (control terminal) input is high level, collector (first end) and emitter (second end) is kept to disconnect, therefore second
The other end of coil 12 is not connect with positive voltage source, the second coil 12 can normal work once electrified, and when kitchen range stop working, thermoelectricity
It is even no longer heated, therefore amplifier exports low level, the triode ON of positive-negative-positive, collector and emitter are connected at this time, so that
Positive voltage source is connect with the other end of the second coil so that when the current direction and normal work of the second coil 12 on the contrary,
To be that solenoid valve closes intake valve.
In some alternative embodiments, the reverse inter-input-ing ending grounding of the amplifier 511, non-inverting input terminal and described the
The connection of one pin 31；The output end of the amplifier 511 is connect with described control unit 52.Optionally, described control unit 52
Including first switch 521, the first switch 521 is NPN type triode.In this embodiment, and using PNP triode
For situation on the contrary, amplifier 511 exports low level when thermocouple 3 is heated, the base stage of NPN triode keeps collection under low level
Electrode (first end) and emitter (second end) disconnect, and the second coil 12 works normally, when thermocouple is not heated, amplifier
511 output high level, the collector and emitter of NPN triode are connected, and the electric current on the second coil 12 is reversed, therefore the second line
Cisco unity malfunction is enclosed, solenoid valve closes the intake valve of combustion gas.
In some alternative embodiments, the input terminal being grounded on the amplifier is grounded by second resistance 22；
In some alternative embodiments, the input terminal for the first pin being connected on the amplifier 511 passes through 3rd resistor
23 connect with first pin 31；
In some alternative embodiments, the inverting input terminal of the amplifier passes through the 4th resistance 24 and output end phase
Even.The amplifier can be operational amplifier.
The application also proposes a kind of kitchen range, including the application propose it is any as described in control circuit.
In order to be better described the application proposition control circuit, please refer to Fig. 2, using solenoid valve 1 control combustion gas into
The opening and closing of air valve, the inlet open of combustion gas when first coil 11 and the second coil 12 all work normally, thermocouple 3 is for examining
The flame on kitchen range is surveyed, when kitchen range are normally lit a fire, negative pressure is generated on the first pin 31, therefore are produced from the both ends of first coil 11
Raw voltage difference, first coil 11 work normally, and simultaneously amplify the noninverting input ground connection of device 511, and reverse input end draws with first
Foot 31 connects, and the output end of amplifier 511 exports high level at this time, and first switch 521 is PNP triode, in PNP triode
When base stage input high level, collector and emitter is disconnected, therefore the other end of the second coil is not connect with positive voltage source, but
Connect with negative pressure generation module 4, at this time the second coil both ends generate voltage difference, the second coil 12 work normally, combustion gas into
Air valve is opened, and negative pressure will be no longer generated when kitchen range stop working, on the first pin of thermocouple 3, at this time the two of first coil 11
End no longer has enough voltage differences, and first coil 11 does not work, and low level, PNP triode quilt will be exported by simultaneously amplifying device 511
It opens, collector and emitter connection, the other end of the second coil 12 is connected to positive voltage source, because the voltage of positive voltage source is high
In ground wire, so on the contrary, opposite electromagnetic force is generated, due to first when the current direction on the second coil 12 is worked normally with it
Coil 11 and the second coil 12 all do not work normally, so solenoid valve 1 closes the intake valve of combustion gas.
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
Thermocouple (3), including the first pin (31)；
Negative pressure generation module (4), for generating negative pressure；
Solenoid valve (1), including first coil (11) and the second coil (12)；One end of the first coil (11) is grounded, described
The other end of first coil (11) is connect with the first pin (31) of the thermocouple (3)；Second coil (12) one terminates
Ground, the other end and the negative pressure generation module (4) connection of second coil (12)；
It detects control module (5), connects respectively with first pin (31), the other end of the second coil (12) and positive voltage source
It connects, is used for when the thermocouple (3) heating temperature is not higher than the first temperature, by the other end of second coil (12) and institute
Positive voltage source connection is stated, when the thermocouple (3) heating temperature is higher than the first temperature, by the another of second coil (12)
End is disconnected with positive voltage source.
2. control circuit according to claim 1, which is characterized in that
It detects control module (5), comprising: detection unit (51) and control unit (52)；
The detection unit (51) connect with first pin (31) and described control unit (52) respectively, for according to
Voltage on first pin (31) sends control signal to described control unit (52)；
Described control unit (52), respectively with the positive voltage source, the other end of second coil and the detection unit
(51) it is connected, for being controlled between the positive voltage source and the other end of second coil (12) according to the control signal
On-off.
3. control circuit according to claim 2, which is characterized in that
The detection unit (51) includes amplifier (511), the output end of the amplifier (511) and described control unit (52)
Connection, an input terminal of the amplifier (511) are connect with first pin (31), pass through the output end of the amplifier
Control signal is exported to described control unit (52)；
And/or
Described control unit (52) includes first switch (521), and the first switch (521) has first end, second end and control
End processed；The first end is connect with the other end of the second coil (12), and the second end is connect with the positive voltage source；The control
End processed is connect with the detection unit (51), for receiving the control signal, to control between first end and second end
On-off.
4. control circuit according to claim 3, which is characterized in that
The first switch (521) is that triode or mos are managed；
And/or first resistor (21) are provided in the detection unit (51) and the connection line of described control unit (52).
5. control circuit according to claim 3 or 4, which is characterized in that
The non-inverting input terminal of the amplifier (511) is grounded, and inverting input terminal is connect with first pin (31)；
The output end of the amplifier (511) is connect with described control unit (52).
6. control circuit according to claim 5, which is characterized in that
Described control unit (52) includes first switch (521), and the first switch is PNP type triode.
7. control circuit according to claim 3 or 4, which is characterized in that
The reverse inter-input-ing ending grounding of the amplifier (511), non-inverting input terminal are connect with first pin (31)；
The output end of the amplifier (511) is connect with described control unit (52).
8. control circuit according to claim 7, which is characterized in that
Described control unit (52) includes first switch (521), and the first switch (521) is NPN type triode.
9. according to the described in any item control circuits of claim 3-8, which is characterized in that
The input terminal being grounded on the amplifier is grounded by second resistance (22)；
And/or the input terminal of the first pin is connected on the amplifier (511) and passes through 3rd resistor (23) and first pin
(31) it connects；
And/or the inverting input terminal of the amplifier is connected by the 4th resistance (24) with output end.
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 |
|---|---|---|---|
| CN201910837896.1A CN110469875A (en) | 2019-09-05 | 2019-09-05 | Control circuit and kitchen range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910837896.1A CN110469875A (en) | 2019-09-05 | 2019-09-05 | Control circuit and kitchen range |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110469875A true CN110469875A (en) | 2019-11-19 |
Family
ID=68514915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910837896.1A Pending CN110469875A (en) | 2019-09-05 | 2019-09-05 | Control circuit and kitchen range |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110469875A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410561A (en) * | 2011-11-14 | 2012-04-11 | 江苏环能通环保科技有限公司 | Safe gas cooker |
| CN102788374A (en) * | 2012-08-20 | 2012-11-21 | 浙江苏泊尔家电制造有限公司 | Automatic timed extinguishing device of gas stove and protection method |
| CN108150301A (en) * | 2018-01-02 | 2018-06-12 | 南通市玉翔光学元件有限公司 | One kind is stopped in emergency circuit and its implementation |
| CN210568606U (en) * | 2019-09-05 | 2020-05-19 | 珠海格力电器股份有限公司 | Control circuit and cooking utensils |
-
2019
- 2019-09-05 CN CN201910837896.1A patent/CN110469875A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410561A (en) * | 2011-11-14 | 2012-04-11 | 江苏环能通环保科技有限公司 | Safe gas cooker |
| CN102788374A (en) * | 2012-08-20 | 2012-11-21 | 浙江苏泊尔家电制造有限公司 | Automatic timed extinguishing device of gas stove and protection method |
| CN108150301A (en) * | 2018-01-02 | 2018-06-12 | 南通市玉翔光学元件有限公司 | One kind is stopped in emergency circuit and its implementation |
| CN210568606U (en) * | 2019-09-05 | 2020-05-19 | 珠海格力电器股份有限公司 | Control circuit and cooking utensils |
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