CN204648343U - The testing circuit of secondary coil control loop in a kind of kitchen range wink burning-point firearm - Google Patents
The testing circuit of secondary coil control loop in a kind of kitchen range wink burning-point firearm Download PDFInfo
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- CN204648343U CN204648343U CN201520272445.5U CN201520272445U CN204648343U CN 204648343 U CN204648343 U CN 204648343U CN 201520272445 U CN201520272445 U CN 201520272445U CN 204648343 U CN204648343 U CN 204648343U
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Abstract
The utility model discloses the testing circuit of secondary coil control loop in a kind of kitchen range wink burning-point firearm, secondary coil control loop comprises the power supply of powering for secondary coil, and the gauge tap of to connect with secondary coil, gauge tap controls the conducting state of secondary coil control loop under being used for the effect adding firing command outside, testing circuit comprises alarm module, and signal acquisition module, the operating voltage at place of connecting with secondary coil for detection control switch; Reference voltage module, for the formation of and output reference voltage; Logic judgment module, for exporting the first control signal according to reference voltage and operating voltage; Alarm control module, sends alarm for controlling described alarm control module according to the first control signal and additional firing command.By arranging secondary coil control loop testing circuit, can in real time, comprehensively detect secondary coil control loop and whether breaking down, substantially increasing the reliability of gas combustion range flameout circuit, improve the security of gas-cooker.
Description
Technical field
The utility model relates to gas kitchen ranges technical field, particularly relates to the testing circuit of secondary coil control loop in a kind of kitchen range wink burning-point firearm.
Background technology
Gas kitchen ranges is a kind of important kitchen utensils of family's indispensability, the switch of kitchen range combustion gas is generally magnetic valve, magnetic valve is an electromagnet, magnetic field is had to produce after energising, the connecting rod of energy adhesive spool, the air admission hole of burnt gas valve is opened, and the effect by own spring force after dead electricity can automatically reset again, seal combustion gas pore, ensure that combustion gas can not be excessive.
In order to can shut electromagnetic valve immediately after making kitchen range flame-out suddenly, prevent combustion gas excessive, the burner of kitchen range can be provided with thermocouple.Thermocouple is the B alloy wire that two different materials weld together, and when the heating one end other end cools, can produce electromotive force (voltage) between two B alloy wires.The size producing electromotive force is decided by material character and the heating-up temperature of B alloy wire.When flame heats, the electromotive force that thermocouple two ends produce is supplied to magnetic valve, and magnetic valve obtains electric maintenance adhesive, maintains the conducting of combustion gas; When meeting accident flame-out, the electromotive force at thermocouple two ends disappears, and fuel gas path is blocked in the release of magnetic valve dead electricity, prevents combustion gas excessive.
Integrated kitchen range is a kind of gas kitchen ranges integrating the several functions such as range hood, gas-cooker, disinfection cabinet, storage cabinet, and it has advantages such as saving space, smoke pumping are effective, low energy environmental protection, is widely used.
Wink, burning-point firearm was the basic element of character of integrated kitchen range, existing wink burning-point firearm based on Double coil electromagnetic valve (comprise series connection main coil and from coil) realize, firing circuit comprises Double coil electromagnetic valve, and the thermocouple of to power for the main coil of Double coil electromagnetic valve, and secondary coil control loop, wherein secondary coil control loop comprises the secondary coil and gauge tap that are connected on secondary coil power supply two ends successively, and wherein gauge tap controls the break-make of secondary coil control loop according to additional firing command.
Usually under normal circumstances; when opening knob starting ignition (namely additional firing command is high level); gauge tap conducting makes secondary coil inhale magnetic valve by force; rear gauge tap of having lighted a fire disconnects; secondary coil is inhaled by force function and is closed; the electromotive force that magnetic valve is produced at flame combustion thermocouple by main coil maintains adhesive, and during flame accident extinguishing, blowout protection effect is played in magnetic valve release.
But, and in use easily occur that secondary coil control loop damages, like this or make gas-cooker cannot normal ignition after receiving firing command effectively, or normally cannot discharge magnetic valve when accident extinguishing, occur disaster hidden-trouble.
Utility model content
For the deficiency that prior art exists, the purpose of this utility model is the kitchen range providing a kind of safe and reliable kitchen range flameout control circuit and adopt this circuit.
For achieving the above object, the utility model provides following technical scheme:
The testing circuit of secondary coil control loop in a kind of kitchen range wink burning-point firearm, described wink burning-point firearm comprises the Double coil electromagnetic valve with main coil and secondary coil, described secondary coil control loop comprises the power supply of powering for secondary coil, and the gauge tap of to connect with secondary coil, gauge tap controls the conducting state of secondary coil control loop under being used for the effect adding firing command outside, described testing circuit comprises alarm module, and:
Signal acquisition module, the operating voltage at place of connecting with secondary coil for detection control switch;
Voltage identification module, for exporting the first control signal according to described operating voltage;
Alarm control module, sends alarm for controlling described alarm module according to the first control signal and additional firing command.
Described secondary coil control loop comprises the gauge tap of connecting with secondary coil, gauge tap is connected to the two ends of secondary coil power supply (i.e. power supply) after connecting with secondary coil, and secondary coil is connected with the positive pole of secondary coil power supply, gauge tap is connected with negative pole (ground connection).
The relation that the utility model to be connected with secondary coil between the operating voltage at place and reference voltage according to detection control switch judges that whether control loop is normal, and testing circuit principle is simple, is easy to realize.
Secondary coil control loop lost efficacy and usually there are two kinds of situations, and one is gauge tap conducting all the time, and another kind is the separated of gauge tap and secondary coil field.
In side circuit, between each electronic component, the mechanical systems such as welding that adopt are electrically connected more.Due to the defect of mechanical connection, when there is open circuit between usual different elements, open position, usually at the two mechanical connection place (as pad place), for discrete component itself, occurs that the probability of open circuit fault is less.
As preferably, the signals collecting end in described signal acquisition module is connected with the one end of connecting with secondary coil in gauge tap (be namely directly connected with gauge tap element itself, instead of at mechanical connection place).
Now, adding firing command is outside under low level condition, if there is open failure between gauge tap and secondary coil field, then the operating voltage detected is low level, otherwise the operating voltage detected is high level.
If the signals collecting end in signal acquisition module is directly connected with gauge tap, because secondary coil is connected with positive source, when to add firing command be outside low level, now no matter between gauge tap and secondary coil field, whether there is open failure, signal acquisition module detection control switch is high level with the operating voltage at the secondary coil place of series connection, therefore cannot be correct detect this open failure.
Described voltage identification module realizes based on the A/D detection module in single-chip microcomputer.During specific implementation, the A/D that operating voltage signal acquisition module collected is input in single-chip microcomputer detects, and exports corresponding level signal as the first control signal by the output of correspondence.
Described voltage identification module comprises:
Reference voltage module, for the formation of and output reference voltage;
Logic judgment module, for exporting the first control signal according to reference voltage and operating voltage.
Realized by comparator, be conducive to reducing costs, improve conversion efficiency.
The size according to the power supply of powering for secondary coil in secondary coil control loop of reference voltage is arranged, and for ease of realizing, in the utility model, reference voltage module realizes based on voltage divider principle.Described reference voltage module comprises the first divider resistance and the second divider resistance that are serially connected with power supply two ends successively, exports as the reference voltage with the voltage at the first divider resistance and the second divider resistance serial connection place.
Because the power output of power supply in the utility model is very little, therefore during actual use, the size of the reference voltage that reference voltage module exports and branch pressure voltage have nothing to do, and only consider the failure conditions of gauge tap:
When the gauge tap inefficacy shorted to earth of secondary coil, the reference voltage now exported is 0V; When gauge tap is normal, the size of this reference voltage equals the operating voltage of power supply.
Described logic judgment module comprises comparator and exports the first control signal by the output of described comparator;
The reverse input end of described comparator is connected to receive reference voltage with reference voltage module, positive input is connected after the first resistance and is connected to receive operating voltage with signal acquisition module, and the first resistance is also connected a pull down resistor ground connection with the link of signal acquisition module.
As preferably, described voltage identification module also comprises triode and exports the first control signal by the colelctor electrode of described triode; The base stage of described triode is connected with the output of described voltage identification module, and emitter stage connects power supply.
During practical application, need to determine whether need setting triode and select triode-type (NPN or PNP) according to the logical relation in concrete circuit.
Described alarm control module comprises enable module and control module, wherein:
Enable module, for receiving additional firing command, adds outside when firing command is low level and opens alarm module;
Control module, for receiving the first control signal, when alarm module, if the first control signal is low level, then controls alarm module and sends alarm.
Further preferably, described alarm control module comprises triode, and the base stage of described triode is by receiving additional firing command after a current-limiting resistance, and emitter stage receives the first control signal, colelctor electrode output alarm signal.
In the utility model, alarm control module only adds firing command is outside low level, controls alarm module and send alarm prompt when the first control signal is low level.
Alarm module in the utility model is preferably sound and light alarm module, thinks that user provides the sense of hearing and visual dual warning prompt.
Compared with prior art, the beneficial effects of the utility model are as follows:
By arranging secondary coil control loop testing circuit, can in real time, comprehensively detect secondary coil control loop and whether breaking down, substantially increasing the reliability of gas combustion range flameout circuit, improve the security of gas-cooker.
Accompanying drawing explanation
Fig. 1 is the testing circuit of secondary coil control loop in kitchen range wink of the present utility model burning-point firearm.
Detailed description of the invention
In order to further set forth the technological means and effect thereof that the utility model takes, below in conjunction with preferred embodiment and accompanying drawing thereof, the utility model is described in further detail.
As shown in Figure 1, wink burning-point firearm in the present embodiment comprises the Double coil electromagnetic valve with main coil A and secondary coil B, main coil A is powered by thermocouple T, main coil A is powered by secondary coil power supply (output voltage is 3/1.5V), secondary coil control loop comprises the gauge tap of connecting with secondary coil, and be connected to the two ends of secondary coil power supply after secondary coil and control series connection, control the beginning add the effect of firing command outside under control the attracting state of secondary coil.
Wherein, gauge tap realizes based on NPN triode Q1, and the colelctor electrode of triode Q1 is connected with secondary coil, grounded emitter, and base series one resistance R1, receives additional firing command using the other end of resistance R1 as the controlled end of switch.
Kitchen range wink in the present embodiment secondary coil control loop in burning-point firearm testing circuit, as shown in Figure 1, comprise alarm module, and:
Signal acquisition module, the operating voltage at place of connecting with secondary coil for detection control switch, signals collecting end is connected with gauge tap (being connected with the one end of connecting with secondary coil in gauge tap);
In the present embodiment, signal acquisition module is directly realized by a wire, and one end of this wire, as signals collecting end, is connected with gauge tap, and the other end is as signal output part, and output services voltage, is connected with logic judgment unit.
Voltage identification module, for exporting the first control signal according to described operating voltage; Voltage identification module in the present embodiment based on the comparison device realizes.Specifically comprise:
Reference voltage module, for the formation of and output reference voltage;
In the present embodiment, reference voltage module comprises the first divider resistance and the second divider resistance that are serially connected with power supply two ends successively, exports as the reference voltage with the voltage at the first divider resistance R2 and the second divider resistance R3 serial connection place.
Logic judgment module, for exporting the first control signal according to reference voltage and operating voltage;
Logic judgment module comprises comparator D, the reverse input end of comparator D is connected to receive reference voltage with reference voltage module, positive input is connected after the first resistance R4 and is connected to receive operating voltage with signal acquisition module, and the first resistance and signal acquisition module link are also connected a pull down resistor R5 ground connection, comparator D is powered by power Vcc.
The output of comparator D connects a triode Q2 (positive-negative-positive), and triode Q2 is connected with the output of comparator by base stage, and exports the first control signal by colelctor electrode, and emitter stage connects power supply (Vcc).
Alarm control module, sends alarm for controlling alarm module according to the first control signal and additional firing command.
Alarm control module comprises enable module and control module, wherein:
Enable module, for receiving additional firing command, adds outside when firing command is low level and opens alarm module;
Control module is used for the first control signal, when alarm module, if the first control signal is low level, then controls alarm module and sends alarm.
In the present embodiment, alarm control module is based on three grade of three realization, enable module and control module is integrated in one, is conducive to the integrated and cost of circuit and reduces.Physical circuit comprises triode Q3, and the base stage of triode Q3 is by receiving additional firing command after a current-limiting resistance R6, and emitter stage receives the first control signal, colelctor electrode output alarm signal.
Whether the testing circuit of the present embodiment adds firing command outside when being high level, no matter fault, all can not report to the police.Therefore the testing circuit of the present embodiment be when after igniting completes or (namely additional firing command is low level) that misfires detect.
After igniting completes, additional firing command is low level, and now alarm module can start.The Cleaning Principle of the testing circuit of the present embodiment is as follows:
If (a) secondary coil normal (i.e. fault-free):
Triode Q1 ends, and the operating voltage detected is high level, now comparator D output low level, and the first control signal exported after triode Q2 is high level.Now first control signal received of alarm control module is high level, and additional firing command is low level, and now alarm module is opened, and because the first control signal is high level, now triode Q3 conducting, alarm module does not carry out alarm.
If (b) gauge tap fault (being gauge tap conducting all the time in the present embodiment):
Due to gauge tap fault, triode Q1 conducting all the time, because the signals collecting end in signal acquisition module is connected with gauge tap, now, collecting operating voltage is low level, and comparator D exports high level, and the first control signal exported after triode Q2 is low level, now triode Q3 ends, and alarm module carries out alarm.
Separated (namely the opening a way) of (c) gauge tap and secondary coil field:
Because the signals collecting end in signal acquisition module is connected with gauge tap, now, collecting operating voltage is low level, comparator D exports high level, the first control signal exported after triode Q2 is low level, and now triode Q3 ends, and alarm module carries out alarm.
Above-described detailed description of the invention has been described in detail the technical solution of the utility model and beneficial effect; be understood that and the foregoing is only most preferred embodiment of the present utility model; be not limited to the utility model; all make in spirit of the present utility model any amendment, supplement and equivalent to replace, all should be included within protection domain of the present utility model.
Claims (9)
1. the testing circuit of secondary coil control loop in a kitchen range wink burning-point firearm, described wink burning-point firearm comprises the Double coil electromagnetic valve with main coil and secondary coil, described secondary coil control loop comprises the power supply of powering for secondary coil, and the gauge tap of to connect with secondary coil, gauge tap controls the conducting state of secondary coil control loop under being used for the effect adding firing command outside, it is characterized in that, described testing circuit comprises alarm module, and:
Signal acquisition module, the operating voltage at place of connecting with secondary coil for detection control switch;
Voltage identification module, for exporting the first control signal according to described operating voltage;
Alarm control module, sends alarm for controlling described alarm module according to the first control signal and additional firing command.
2. the testing circuit of secondary coil control loop in as claimed in claim 1 kitchen range wink burning-point firearm, it is characterized in that, the signals collecting end in described signal acquisition module is connected with the one end of connecting with secondary coil in gauge tap.
3. the testing circuit of secondary coil control loop in as claimed in claim 1 kitchen range wink burning-point firearm, it is characterized in that, described voltage identification module realizes based on the AD detection module in single-chip microcomputer.
4. the testing circuit of secondary coil control loop in as claimed in claim 1 kitchen range wink burning-point firearm, it is characterized in that, described voltage identification module comprises:
Reference voltage module, for the formation of and output reference voltage;
Logic judgment module, for exporting the first control signal according to reference voltage and operating voltage.
5. the testing circuit of secondary coil control loop in as claimed in claim 4 kitchen range wink burning-point firearm, it is characterized in that, described reference voltage module comprises the first divider resistance and the second divider resistance that are serially connected with described power supply two ends successively, exports as the reference voltage with the voltage at the first divider resistance and the second divider resistance serial connection place.
6. the testing circuit of secondary coil control loop in as claimed in claim 5 kitchen range wink burning-point firearm, it is characterized in that, described logic judgment module comprises comparator and exports the first control signal by the output of described comparator;
The reverse input end of described comparator is connected with reference voltage module to receive described reference voltage, positive input is connected after the first resistance and is connected to receive described operating voltage with signal acquisition module, and the link of the first resistance and signal acquisition module is also connected with a pull down resistor ground connection.
7. the testing circuit of secondary coil control loop in as claimed in claim 6 kitchen range wink burning-point firearm, it is characterized in that, described voltage identification module also comprises triode and exports the first control signal by the colelctor electrode of described triode;
The base stage of described triode is connected with the output of described voltage identification module, and emitter stage connects power supply.
8., as the testing circuit of the secondary coil control loop in burning-point firearm of the kitchen range wink in claim 1 ~ 7 as described in any one, it is characterized in that, described alarm control module comprises enable module and control module, wherein:
Enable module, for receiving additional firing command, adds outside when firing command is low level and opens alarm module;
Control module, for receiving the first control signal, when alarm module, if the first control signal is low level, then controls alarm module and sends alarm.
9. the testing circuit of secondary coil control loop in as claimed in claim 8 kitchen range wink burning-point firearm, it is characterized in that, described alarm control module comprises triode, the base stage of described triode is by receiving additional firing command after a current-limiting resistance, emitter stage receives the first control signal, colelctor electrode output alarm signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520272445.5U CN204648343U (en) | 2015-04-29 | 2015-04-29 | The testing circuit of secondary coil control loop in a kind of kitchen range wink burning-point firearm |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520272445.5U CN204648343U (en) | 2015-04-29 | 2015-04-29 | The testing circuit of secondary coil control loop in a kind of kitchen range wink burning-point firearm |
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| CN204648343U true CN204648343U (en) | 2015-09-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108072056A (en) * | 2016-11-16 | 2018-05-25 | 科佩西西班牙集团有限公司 | Gas appliance |
| CN111609429A (en) * | 2020-05-09 | 2020-09-01 | 华帝股份有限公司 | Electromagnetic valve electricity-saving control system and method for kitchen range and gas stove |
-
2015
- 2015-04-29 CN CN201520272445.5U patent/CN204648343U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108072056A (en) * | 2016-11-16 | 2018-05-25 | 科佩西西班牙集团有限公司 | Gas appliance |
| CN108072056B (en) * | 2016-11-16 | 2020-10-30 | 科佩西西班牙集团有限公司 | Gas appliance |
| CN111609429A (en) * | 2020-05-09 | 2020-09-01 | 华帝股份有限公司 | Electromagnetic valve electricity-saving control system and method for kitchen range and gas stove |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 312000 No. 68 Xintao Road, Qixing Street, Xinchang County, Shaoxing City, Zhejiang Province Patentee after: Zhejiang Xintao Electronic Technology Co., Ltd. Address before: 312500 Xinchang County, Zhejiang Province, Tao Road, No. 68, No. Patentee before: Zhejiang Xin Tao electronics technology limited company |
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| CP03 | Change of name, title or address |