CN1154783A - Safety device for electronic heating appliance - Google Patents
Safety device for electronic heating appliance Download PDFInfo
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- CN1154783A CN1154783A CN 96190388 CN96190388A CN1154783A CN 1154783 A CN1154783 A CN 1154783A CN 96190388 CN96190388 CN 96190388 CN 96190388 A CN96190388 A CN 96190388A CN 1154783 A CN1154783 A CN 1154783A
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- signal
- heater
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Abstract
An automatic turning-off and indicating device for an electrical heating apparatus, includes: an apparatus use state detection device (2) for providing use signals (US) of a non-use state of an indicating device; a turning-off device (10) for turning-off a heater (12) of the apparatus based on switch signals (SS) obtained from the use signals (US); an apparatus orientation detection device (4) for providing orientation signals (OS) for indicating different apparatus orientations; a trigger device (18) for triggerring an indicator (22) based on the switch signals (SS), wherein the indicator (22) indicates turn-off of the heater (12); and a device (8) for providing a time delay, which is used for providing a time delay between turning-off the heater (12) and triggerring the indicator (22), the time delay is lied on the orientation signals (OS). Turning-off of the heater (12) is indicated to a user by the indicator (22). When the apparatus is turned-off at a general stopping work position, for example, a stopping position of an electrical iron, different time delays between turning-off and indicating, and determined by the orientations of the apparatus, provide possibility of delay indication.
Description
The present invention relates to the auto-cutout and the indicating device of electric heating equipment, comprising:
Equipment user mode checkout gear is used to provide the use signal of the non-working condition of indicating equipment;
Cutoff device is used for the heater according to the switching signal turn-off apparatus that obtains from the use signal;
Equipment oriented detection device is used to provide the phasing signal of indicating different equipment orientations;
Trigger equipment is used for according to the switching signal trigger indicator shutoff of indicating device instruction heater.
The invention still further relates to the electric iron that comprises this device.
This device and flatiron can (for example) be known from United States Patent (USP) 4203101.The electric heating equipment especially auto-cutout of electric iron (ASO) system is known.Movable sensor or manual sensor monitors flatiron that transducer for example has mercoid switch are in running order or non operating state.When flatiron was not worked within a certain period of time, for avoiding causing dangerous situation because of flatiron is unattended, the electric heater of flatiron turn-offed in the ASO system.Indicating device is informed the user: heating element is turned off.Indicating device can be visual, lamp for example, but or sounding, for example buzzer.When the user began to reuse flatiron, the ASO system connected the heater of flatiron.Usually, when being horizontal or being in vertical position or stopping for a rest on a walking tour (heel rest) position, flatiron can not kept an eye on.Particularly when the upright position, can whether very short to the user prompt time-out period, for example 30 seconds.
An object of the present invention is to provide a kind of improved ASO system that is used for electric heating equipment.According to the present invention, auto-cutout described in the initial paragraph and indicating equipment are characterised in that and also comprise the device that is used for providing time delay between shutoff heater and trigger indicator that described time delay depends on phasing signal.
The time delay of the orientation that independently depends on equipment is provided by the triggering for indicating device, always can realize the shutoff immediately of heater, thereby provide maximum fail safe, simultaneously indicating device is only just had no progeny in the pass and is triggered immediately when being necessary to remind subscriber equipment still to be connected on the power supply thinking.Particularly for flatiron, provide so that time delay is very easily, that is, shorter than the time delay under the situation of phasing signal indicating equipment upright position in the time delay under the phasing signal indicating equipment horizontal orientation situation.Time delay under the horizontal orientation situation can be for zero, so that immediately this very unsafe state is informed the user.Time delay under the situation of upright position then can be much longer, so that the use that is in foot-rest position interval is provided in the iron process that the user is reminded by the work that repeats of indicating device.
The user mode checkout gear can comprise the manual transducer in a movable sensor that is arranged at the correct position in the equipment or the handle that is arranged at equipment.A possible embodiments of auto-cutout and indicating device is characterised in that, provide the device of time delay to comprise an indication timer, it is used in response to using signal that the triggering signal of delay is provided, and the indicating device trigger equipment comprises: be used for the triggering signal of receiving key signal, delay and the device of phasing signal; And in response to the device of one of the predetermined value selector switch signal of phasing signal and triggering signal of delay.In this embodiment, selection be after heater turn-offs, indicate immediately according to being oriented in of equipment and postpone to indicate between make.
Heater can turn-off after the non-working condition signal produces immediately, perhaps turn-offs after certain delay, and this delay provides by turn-offing timer, and it postpones the response of switching signal to the non-working condition signal, for example postpones 30 seconds.In such a way, overtime is to produce between the moment of the moment of detecting non-working condition and shutoff heater.After heater turn-offed, indicating device depended on the equipment orientation during this period of time triggering after after a while.For flatiron, this time period can be zero when horizontal level, and is a few minutes when the upright position.This means, when heater turn-offs in certain overtime back, trigger immediately for the situation indicator of horizontal level, and postpone to trigger for the situation of upright position.
This auto-cutout and indicating device are suitable in the electric iron very much, but also can be used for other electric heating equipment, for example calorifier, kettle, hair dryer and other firing equipment hand-held or fixed placement.
From the following explanation that the reference accompanying drawing is done one exemplary embodiment of the present invention, above-mentioned and further feature of the present invention and advantage will be more clear, in the accompanying drawing:
Fig. 1 is the block diagram according to auto-cutout of the present invention and indicating device;
Fig. 2 is the flow chart that is used to explain the function of auto-cutout of the present invention and indicating device;
Fig. 3 illustrates the flatiron that auto-cutout of the present invention and indicating device are housed;
Fig. 4 illustrates and is used for moving and orientation sensor of auto-cutout of the present invention and indicating device;
Fig. 5 illustrates the waveform of the signal that the transducer by Fig. 4 produces in moving process;
Fig. 6 illustrate transducer by Fig. 4 under stable state in the waveform of the different directed signals that produce;
Fig. 7 illustrates the circuit diagram of the flatiron that auto-cutout of the present invention and indicating device are housed.
In institute's drawings attached, same reference numeral is represented same section.
Fig. 1 illustrates the block diagram according to auto-cutout of the present invention (ASO) and indicating device.This device is described in conjunction with electric iron, and this only is as an example.Use transducer 2 to detect this flatiron and whether be used, and the user mode signal US of indication use or non-use is provided.Orientation sensor 4 provides phasing signal OS, and this signal OS indication flatiron is horizontal or the upright position.The upright position also is called foot-rest (heel rest) position, because flatiron is positioned over this position in the temporary transient obsolete time interval.When using signal to have non-working condition with flatiron when being worth accordingly, use signal US to trigger and turn-off timer 6 and indication timer 8.Turn-off timer 6 and produce the switching signal SS that postpones, this signal drives controlled switch 10.Switch 10 switches on or off the electric current of the electric heating element 12 that flows through flatiron.Indication timer 8 produces the triggering signal AS that postpones.Switching signal SS and triggering signal AS are by the respective input 14 and 16 of feed-in selector 18, and selector 18 is selected one of signal SS and AS according to the value that is coupled to the phasing signal OS that selects input 20.Selected signal actuation indicator 22, this indicating device can be visual detectors, for example lamp, LED (light-emitting diode) or LCD (liquid crystal display), perhaps sound indicator, for example loudspeaker or buzzer.
Fig. 2 illustrates the workflow diagram of device shown in Figure 1.The literal implication of Fig. 2 is listed in the table below.
| Table | |
| Square frame | The literal implication |
| ??30 | Do not move in 30 seconds? |
| ??32 | Heater is not worked |
| ??34 | Is flatiron horizontal? |
| ??36 | Do not have and move and be in vertical position in 8 minutes? |
| ??38 | Trigger indicator |
| ??40 | Move and detect not? |
| ??42 | Make heater work |
In this flow chart, suppose that using transducer 2 is moving detectors.But, manual (hand) transducer, sense of touch (touch) transducer or approximate (approximation) transducer also can be used for same use.Use signal US to trigger timer 6 and 8 continuously again, unless during timer 6 and 8 overtime (time-out), use signal US to keep stable state.If this stable state continues for example 30 seconds, turn-off timer 6 and open gate-controlled switch 10, and do not have electric current can flow to heater 12 ( square frame 30,32).If the position is level (square frame 34), indicating device 22 is triggered (square frame 38) at once.If flatiron is in vertical position, and for example moving in 8 minutes, the triggering signal that comes from the delay of indicating timer 8 is selected in selector 18, and indicating device will be triggered after 8 minutes ( square frame 34,36,38).But if flatiron moves in the upright position, heater 12 is always connected ( square frame 36,42).As long as detect less than moving, indicating device 22 just keeps triggering (square frame 38,40), otherwise (square frame 42) heater 12 is connected.
Be appreciated that shown in Fig. 1 and ASO and indicating device that have in conjunction with the function of flow chart description shown in Figure 2 can be counted as an automatic shutdown system, this system has single overtimely for disconnecting heater, and has two overtime for trigger indicator.Certainly, timer 6 and 8 time-out period can have any suitable length, but in this given embodiment, it is the longest that the time-out period of indication timer 8 cans be compared to the time-out period that turn-offs timer 6 most.
Fig. 3 illustrates a flatiron, and this flatiron has according to ASO of the present invention and indicating device.Functional circuit square frame shown in Figure 1 is contained in the unit 50, and this element is arranged on the appropriate location in the flatiron.Gate-controlled switch 10, buzzer and/or LED illustrate with way of example.Just as already noted, the use transducer 2 of Fig. 1 can be provided in a side of the manual transducer in the handle of flatiron.A capacitive sensor 52 shown in Figure 3, it forms the part of known sensor circuit.But, use transducer 2 among Fig. 1 and orientation sensor 4 can be combined in the ball contact-making switch shown in Figure 4 valuably.The working method of this switch is similar to mercoid switch.Here adopt Metal Ball 60 to substitute mercury.Ball is packaged in the metal cylinder, and in this metal cylinder, metal electrode 64 stretches out by nonconducting end cap or top cover 66.The ball contact-making switch can be installed on the printed circuit board (PCB) 68 in the unit shown in Figure 3 50, but also can select any other position in the flatiron as required.When flatiron moved, Metal Ball 60 was rolled towards electrode 64 in metal cylinder 62, and is back to illustrated position again.The result produces between tube 62 and the electrode 64 to be interrupted to electrically contact.By switch and resistor 70 are connected in series on the suitable supply voltage, can obtain a ball activation signal BCS.In the flatiron moving process, signal BCS is alternate between low voltage value L and high-voltage value H, as shown in Figure 5.When flatiron did not move and is horizontal, ball 60 did not contact with electrode 64, and signal BCS always is in high level H, as shown in Figure 6.When flatiron did not move and be in vertical (foot-rest) position, ball 60 contacted with electrode 64, and signal BCS always is in low level L, as shown in Figure 6.In the flatiron moving process, timer 6 and 8 is triggered by alternating signal BCS constantly again, and will can not arrive its corresponding time-out period.
The functional circuit square frame of Fig. 1 can adopt conventional design of electronic circuits.Fig. 7 illustrates the practical circuit that has according to the flatiron of ASO of the present invention and indicating device, wherein adopts control and the timing function of microcontroller realization in response to the ball contact-making switch.Heater 12 and thermo-fuse 100, thermostat 102 and switch 104 are connected in series between power supply voltage terminal 106 and 108.Switch 104 is driven by solenoid 110, and normally closed, so that source current flows through heater 12.The temperature of heater 12 is by thermostat 102 controls.Switch 104 is corresponding to the gate-controlled switch in the block diagram of Fig. 1 12.Supply voltage adopts diode 112 and capacitor 114 to carry out rectification and filtering.Mobile/the orientation sensor 116 and the resistor 118 of type are connected in series between the supply voltage and ground of rectification as shown in Figure 4.Voltage BCS on the resistor 118 by NPN transistor 120 buffer compartments from and the input pin 7 of feed-in microcontroller 122.Resistor 124, Zener diode 126 and 128 and capacitor 130 be connected to the supply voltage of rectification, so that low DC operating voltage Vdd to be provided to one of them microcontroller 122.Solenoid 110 is driven by NPN transistor 132, and the latter is driven by interface transistor 134 by the signal of the output pin 5 that comes from microcontroller 122.The light-emitting diode (LED) 136 of output pin 11 that is connected to microcontroller 122 is corresponding to the indicating device among Fig. 1 22.Microcontroller 122 is programmed, to control according to flow chart shown in Figure 2.In this practical circuit, adopt commercial available microcontroller Motorola MC68HC05K0, but also can adopt any other suitable controller.All the other pin of controller 122 can not use, and perhaps are used for unshowned function, perhaps connect according to known mode or by the mode that the controller producer recommends.
Claims (12)
1. an auto-cutout and indicating device that is used for electroheat equipment comprises:
Equipment user mode checkout gear (2) is used to provide the use signal (US) of the non-working condition of indicating equipment;
Cutoff device (10) is used for the heater (12) according to switching signal (SS) turn-off apparatus that obtains from use signal (US);
Equipment oriented detection device (4) is used to provide the phasing signal (OS) of indicating different equipment orientations;
Trigger equipment (18), be used for according to switching signal (SS) trigger indicator (22), the shutoff of indicating device (22) instruction heater (12), it is characterized in that also comprising a device (8), be used for providing time delay between shutoff heater (12) and trigger indicator (22), this time postpones to depend on phasing signal (OS).
2. according to the device of claim 1, it is characterized in that: shorter than the time delay under the situation in the upright position of phasing signal (OS) indicating equipment in the time delay under the situation of the horizontal orientation of phasing signal (OS) indicating equipment.
3. according to the device of claim 1 or 2, it is characterized in that: user mode checkout gear (2) comprises a movable sensor (60,62,64).
4. according to the device of claim 1 or 2, it is characterized in that: user mode checkout gear (2) comprises a manual transducer (52) in the handle that is arranged on equipment.
5. according to claim 1,2,3 or 4 device, it is characterized in that: provide the device of time delay to comprise an indication timer (8), it is in response to using signal (US) that the triggering signal (AS) of delay is provided, the device of trigger indicator (18) comprising: be used for receiving key signal (SS), the triggering signal (AS) that postpones and the device (14 of phasing signal (OS), 16,20); And be used for device according to one of the predetermined value selector switch signal (SS) of phasing signal (OS) and delayed trigger signal (AS).
6. according to claim 1,2,3,4 or 5 device, it is characterized in that comprising a shutoff timer (6), be used for providing switching signal (SS) in the mode of using signal (US) with delayed response.
7. according to the device of claim 6, it is characterized in that: indication timer (8) provides the time of delay longer than the time of delay of turn-offing timer (6).
8. according to the device of claim 1, it is characterized in that: user mode checkout gear (2) and oriented detection device (4) comprise a conductive tube (62), insulating electrode (64) and at least one conductive particle (60) that stretches in the tube (62), conductive particle can move in tube (62), electrically contacts so that form between tube (62) and electrode (64).
9. an electric iron comprises an electric heater (12) and an auto-cutout and an indicating device (52) that is used to turn-off heater (12), and this auto-cutout and indicating device comprise:
Flatiron user mode checkout gear (2,52,116) is used to provide the use signal of the non-working condition of indication flatiron;
Cutoff device (10,104) is used for according to turn-offing heater (12) from the switching signal of using signal to obtain;
Flatiron oriented detection device (4,116) is used to provide the phasing signal of indicating different flatiron orientations;
Trigger equipment (18,122), be used for according to switching signal trigger indicator (22,136), indicating device (22,136) shutoff of instruction heater (12), it is characterized in that also comprising device (8,122), be used for turn-offing heater (12) and trigger indicator (22, time delay is provided 136), and this time postpones to depend on phasing signal.
10. according to the electric iron of claim 9, it is characterized in that: the device (8 that time delay is provided, 122) comprise an indication timer (8,122), it is in response to using signal that the triggering signal of delay, trigger indicator (22 are provided, 136) device (18,122) comprising: be used for the triggering signal of receiving key signal, delay and the device of phasing signal (14,16,20; 122); And be used for device (122) according to one of the predetermined value selector switch signal of phasing signal and delayed trigger signal.
11. according to claim 1,2,3,4 or 5 electric iron, it is characterized in that comprising a shutoff timer (6,122), be used for providing switching signal in the mode of using signal with delayed response.
12. the electric iron according to claim 11 is characterized in that: the indication timer provides the time of delay longer than the time of delay of turn-offing timer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96190388 CN1154783A (en) | 1995-04-25 | 1996-04-10 | Safety device for electronic heating appliance |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SC9500326.5 | 1995-04-25 | ||
| CN 96190388 CN1154783A (en) | 1995-04-25 | 1996-04-10 | Safety device for electronic heating appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1154783A true CN1154783A (en) | 1997-07-16 |
Family
ID=5128032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96190388 Pending CN1154783A (en) | 1995-04-25 | 1996-04-10 | Safety device for electronic heating appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1154783A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009094887A1 (en) * | 2007-12-28 | 2009-08-06 | Tsann Kuen(China) Enterprise Co., Ltd | An iron controlling method and device thereof |
-
1996
- 1996-04-10 CN CN 96190388 patent/CN1154783A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009094887A1 (en) * | 2007-12-28 | 2009-08-06 | Tsann Kuen(China) Enterprise Co., Ltd | An iron controlling method and device thereof |
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