CN2811791Y - Timing alarming and extinguishing device with digital display for gas range - Google Patents
Timing alarming and extinguishing device with digital display for gas range Download PDFInfo
- Publication number
- CN2811791Y CN2811791Y CN 200520101389 CN200520101389U CN2811791Y CN 2811791 Y CN2811791 Y CN 2811791Y CN 200520101389 CN200520101389 CN 200520101389 CN 200520101389 U CN200520101389 U CN 200520101389U CN 2811791 Y CN2811791 Y CN 2811791Y
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- CN
- China
- Prior art keywords
- circuit
- thermocouple
- timing
- magnetic valve
- storage capacitor
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- Expired - Fee Related
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Abstract
The utility model relates to a timing, alarming and extinguishing device with a digital display for a gas stove, which is arranged on an extinguishing protection gas stove with a thermocouple and has the advantages of time setting, alarming before 15 seconds and timing close of a gas source. The utility model is composed of a timing circuit (a), an alarming circuit (b), an extinguishing circuit (d), a thermocouple (T) on the stove, and an electromagnetic valve (YV), wherein a time display circuit, an inverse timing circuit, and a positive timing circuit are arranged in an integrated circuit chip (A) in the timing circuit; the timing circuit is provided with an alarming signal u R [01] outlet and a timing extinguishing signal u R [02] outlet; the direction of a current opposite to a current used for maintaining the attraction of the electromagnetic valve is injected in the electromagnetic valve by using the electromagnetic valve which is integral with the thermocouple, generating two magnetic fields with reverse polarity; the two magnetic fields are cancelled with each other, and the electromagnetic valve losses magnetism and is closed.
Description
Affiliated field:
The utility model is a kind of device that has on the thermocouple blowout protection gas kitchen ranges that is installed in, and it is setting-up time as required, and 15 seconds news of countdown timing advance are rung the timing automatic source of the gas of closing of countdown.
Technical background:
Digital display will be installed on gas kitchen ranges regularly interrogate and ring blanket, must use magnetic valve, energising is opened, and outage is closed.According to the thinking of routine, will on the fuel gas pipeline of kitchen range, increase a magnetic valve, this just means as long as use kitchen range will opens solenoid valve.On gas-cooker with thermocouple blowout protection, have one with the incorporate magnetic valve of thermocouple.Preferably can utilize this magnetic valve.But this magnetic valve is more special, and it is manually opened when kitchen range are lighted a fire, and the thermoelectrical potential that produces after thermocouple is heated is kept magnetic valve work.When big fire, the voltage at actual measurement magnetic valve two ends is 0.011 volt.When minimum fire, the voltage at magnetic valve two ends is 0.0014 volt.Low voltage like this, transistor or IGCT can't be by keeping the electric current of magnetic valve work, because their pressure drops own just are far longer than 0.011 volt.Resistance according to this electromagnetic valve coil of measuring and calculating is 0.03 ohm again, and the contact contact resistance of miniature relay is generally 0.05---0.1 ohm, and greater than electromagnetic valve coil resistance.As the relay normally-closed contact is serially connected between thermocouple and the magnetic valve, the thermoelectrical potential major part of thermocouple drops on the contact, and when kitchen range were less fire, the voltage at magnetic valve two ends was less than 0.0014 volt, closed electromagnetic valve, this explanation kitchen range when less fire can not be worked.Be attempted by the magnetic valve two ends as the normally opened contact with relay, when big fire, the normal switching closed, only bypass the fraction electric current, if the voltage on this moment magnetic valve still has 0.0014 volt when above, magnetic valve can not cut out.
Summary of the invention:
The utility model adopts: inject the electric current opposite with the thermoelectrical potential direction of thermocouple for this special magnetic valve, produce the opposite magnetic field of both direction, cancel out each other, the method that the magnetic valve loss of excitation is closed, when kitchen range are stopped working under unexpected situation, can close automatically on the basis of solenoid valve shuts source of the gas, can regularly close magnetic valve (YV) again and cut off source of the gas.
The technical scheme that its technical problem that solves the utility model adopts is: the gas kitchen ranges digital display is regularly interrogated ring blanket; be installed on the gas kitchen ranges with thermocouple blowout protection; it by timing circuit (a), news ring circuit (b), flameout circuit (c), and kitchen range on thermocouple (T) magnetic valve (YV) formed the loud signal output (U of the news of timing circuit (a)
01) and interrogate the electric capacity (C that rings in the circuit (b)
1) positive pole connect flame-out signal output (U
02) with flameout circuit (c) in resistance (R
1) connect the storage capacitor (C in the flameout circuit (c)
4) be connected with thermocouple (T), magnetic valve (YV).
In order to make flameout circuit less at the internal resistance of cell, energy operate as normal when electric weight is abundant, bigger at the internal resistance of cell, also can reliably working when electricity will exhaust, and the power consumption when making its work is as much as possible little, the technical measures of taking are: flameout circuit (c) repeat circuit (K) is selected the microminiature sealed relay for use, 2.5 volts of coil voltages; Current-limiting resistance (R
2) a termination power positive pole, another termination storage capacitor (C
3) positive pole and the coil of relay (K), another termination triode (VT of coil
3) colelctor electrode, triode (VT
3) emitter stage and the negative pole of storage capacitor (C3) negative pole that connects power supply.
No matter kitchen range are when large and small fire, also no matter whether plentifully the electric weight of battery, when closing magnetic valve, all can inject and be enough to electric current that its loss of excitation is closed to magnetic valve, the technical scheme of taking is: draw two leads more respectively on thermocouple (T) and two leads that magnetic valve (YV) is connected, wherein the lead that is connected with thermocouple (T) positive pole is received storage capacitor (C
4) negative pole and the negative pole of power supply, the lead that is connected with thermocouple (T) negative pole is through relay normally open contact (k
1), receive storage capacitor (C
4) positive pole and current-limiting resistance (R
3) an end, current-limiting resistance (R
3) the other end be connected with the positive pole of power supply.
The beneficial effects of the utility model are:
With low cost, power consumption is saved, and simple installation is easy to use.
1, owing to utilized original magnetic valve, line related has carried out optimized design again, and is with low cost.
2, the electric energy that is held open of magnetic valve is the thermoelectrical potential of thermocouple, and closing then is the micro-electric energy that stores in the storage capacitor, and power consumption is economic.
3, on gas kitchen ranges with thermocouple blowout protection, adopt the utility model, need not to change the gas pipeline in the kitchen range, easy for installation.
Need not powered battery when 4, magnetic valve is worked, whole digital display is regularly interrogated and is rung the blanket standby current less than 20 microamperes, so complete machine is not established power switch.The time just can as long as be provided with when needs regularly stop working function.The usual use need not to operate this device.Use very convenient.
Description of drawings:
Accompanying drawing is an electrical schematic diagram of the present utility model.
In conjunction with the accompanying drawings and embodiments, the utility model is described in further detail.
Accompanying drawing is respectively from left to right: timing circuit (a); News are rung circuit (b); Thermocouple (T) magnetic valve (YV) on flameout circuit (c) and the kitchen range.Wherein timing circuit (a) is arranged on machine box (H
1) in, news are rung circuit (b), flameout circuit (c) is arranged on machine box (H
2) in.Other each labels are respectively among the figure: (A) integrated circuit timing chip; (LCD) LCD; (SB
1) the countdown timing is provided with key; (SB
2) the startup Pause key; (SB
3) the zero setting stop key; (U
I1) countdown timing signalization input port; (U
I2) startup halt signal input port; (U
I3) zero setting stop signal input port; (U
01) news sound signal output; (U
02) flame-out signal output; (C
1)---(C
4) electrochemical capacitor; (R
1)---(R
3) resistance; (VT
1)---(VT
3) triode; (K) relay; (K
1) relay normally open contact; (YV) magnetic valve; (T) thermocouple; (B) loudspeaker.
One, timing circuit (a): need only 3 volts of rated voltages, quiescent current regularly can be exported 0.5 second positive pulse as flame-out signal less than 20 microamperes, and the appropriate digital display timing circuit of timing range all can use.
Two, flameout circuit (c): relay (K) employing microminiature small-power sealed relay-, coil voltage 2.5V, nonstandard, need customization.
Embodiment of the present utility model is as follows: timing circuit is arranged in the machine box (H1), as an installation unit, is arranged in kitchen range face appropriate location.The size of machine box (H1), molding surface, color pattern is decided according to the moulding of kitchen range by kitchen range producer, but will consider waterproof.To interrogate ring circuit, flameout circuit is arranged in the machine box (H2), also as an installation unit be installed in be influenced by heat in the kitchen range tripe little, and from magnetic valve (YV) nearer a bit, the size of machine box (H2), shape determine according to the space in the kitchen range tripe.Circuit in machine box (H1), (H2) connects storage capacitor (C with connector
4) also be connected connecting line 1mm with magnetic valve (YV) with connector
2Flexible cord.
Claims (3)
1, a kind of gas kitchen ranges digital display is regularly interrogated and is rung blanket; be installed on the gas kitchen ranges with thermocouple blowout protection; it by timing circuit (a), news ring circuit (b), flameout circuit (c), and kitchen range on thermocouple (T) magnetic valve (YV) formed, it is characterized in that: the news of timing circuit (a) are rung signal output (U
01) and interrogate the electric capacity (C that rings in the circuit (b)
1) positive pole connect flame-out signal output (U
02) with flameout circuit (c) in resistance (R
1) connect the storage capacitor (C in the flameout circuit (c)
4) be connected with thermocouple (T), magnetic valve (YV).
2, gas kitchen ranges digital display according to claim 1 is regularly interrogated and rung blanket, it is characterized in that: flameout circuit (c) repeat circuit (K) is selected the microminiature sealed relay for use, 2.5 volts of coil voltages; Current-limiting resistance (R
2) a termination power positive pole, another termination storage capacitor (C
3) positive pole and the coil of relay (K), another termination triode (VT of coil
3) colelctor electrode, triode (VT
3) emitter stage and storage capacitor (C
3) negative pole connect the negative pole of power supply.
3, gas kitchen ranges digital display according to claim 1 is regularly interrogated and is rung blanket, it is characterized in that: draw two leads more respectively on thermocouple (T) and two leads that magnetic valve (YV) is connected, wherein the lead that is connected with thermocouple (T) positive pole is received storage capacitor (C
4) negative pole and the negative pole of power supply, the lead that is connected with thermocouple (T) negative pole is through relay normally open contact (K
1), receive storage capacitor (C
4) positive pole and current-limiting resistance (R
3) an end, current-limiting resistance (R
3) the other end be connected with positive source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520101389 CN2811791Y (en) | 2005-04-04 | 2005-04-04 | Timing alarming and extinguishing device with digital display for gas range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520101389 CN2811791Y (en) | 2005-04-04 | 2005-04-04 | Timing alarming and extinguishing device with digital display for gas range |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2811791Y true CN2811791Y (en) | 2006-08-30 |
Family
ID=36938181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520101389 Expired - Fee Related CN2811791Y (en) | 2005-04-04 | 2005-04-04 | Timing alarming and extinguishing device with digital display for gas range |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2811791Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108302567A (en) * | 2018-01-28 | 2018-07-20 | 昆山富凌能源利用有限公司 | Intelligent control gas kitchen range with warning function |
-
2005
- 2005-04-04 CN CN 200520101389 patent/CN2811791Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108302567A (en) * | 2018-01-28 | 2018-07-20 | 昆山富凌能源利用有限公司 | Intelligent control gas kitchen range with warning function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060830 Termination date: 20120404 |