CN2220712Y

CN2220712Y - Multifunction safety energy-saving auto-controll alarm instrument for water boiling

Info

Publication number: CN2220712Y
Application number: CN 93209506
Authority: CN
Inventors: 周长志
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-04-07
Filing date: 1993-04-07
Publication date: 1996-02-21
Anticipated expiration: 2003-04-07

Abstract

The utility model relates to a multifunction safety energy-saving auto-control alarm instrument for water boiling, belonging to the new technique of the combination of the electronic component and the drinking water appliance. The multifunction safety energy-saving auto-control alarm instrument for water boiling is used for the electric kettle in the family and the electric water heater with a high volume in the group unit. The multifunction safety energy-saving auto-control alarm instrument for water boiling is added with thermosensitive resistor, a liquid level test probe in the existing an insulation shell. The test electrode and an electromagnetic valve are connected with the shell of the equipment; therefore, the multifunction safety energy-saving auto-control alarm instrument for water boiling has the function of automatically controlling the water temperature, automatically detecting the liquid level and whether the shell of the device is leaky, quickly cutting-off the power supply of the heater after the water boiled to save the electrical energy, dispatching the audible and visible alarm, maintaining the long-term state of stopping the heating work (time delay memory) and automatically controlling the watering.

Description

Multifunctional safe energy-saving type water is driven the automatic control and alarm instrument

The utility model relate to a kind of electronic devices and components and water appliance combined, be applicable to the equipment in the big volume electric water boiler that home-use insulating pot and collective unit use.

Existing electric water boiler is by heating element, the power electrode binding post, and insulation fixed housing and boiler housing are formed by connecting.Along with popularizing in a large number of insulating pot and each model electric water boiler, normal electric leakage and the lack of water situation that occurs by certain reason generation, and cause the phenomenon that electric shock and heating element are burnt out, so cause unnecessary loss.

The purpose of this utility model provides a kind of automatic control water temperature that possesses, whether detect liquid level and apparatus casing automatically leaks electricity, reach water and open back cut-out heater power source (saving electric energy) rapidly, send sound and light signal and report to the police, and can maintain the function that stops heating work (note of delaying time meaning) state for a long time.

The purpose of this utility model is achieved in that in the insulation stationary housing that is connected with device housings, setting is a transducer by thermistor, it is connected with apparatus casing, contact plane and apparatus casing plane parallel, improve the sensitivity of its thermometric, thereby realize the function of automatic control water temperature; Liquid level test probe is a transducer, and extreme position insulation and sealing with itself and apparatus casing are set improve the sensitivity that it contact or breaks away from water, thus the function of the automatic detection of realization liquid level; Electric capacity, diode and apparatus casing connect to form very transducer of electrical verification, realize detecting automatically the function whether housing leaks electricity; Resistor-Capacitor Unit and integrated package are formed time-delay note meaning function; Transistor, relay, buzzer and light-emitting diode are formed the function that sound and light alarm shows; Transistor, relay and bidirectional triode thyristor are formed noncontacting switch, control the function that heating power supply is opened automatically; Integrated package, transistor, relay, bidirectional triode thyristor, electromagnetically operated valve, liquid level detection electrode and apparatus casing are formed the function of automatic control water filling mutually.

Owing to adopt such scheme, make that to the utlity model has circuit simple, stable performance, safe and reliable.Its advantage is:

1, the utility model control water temperature automatically, but also electrical energy saving.When unboiled water is heated to 100 ℃, cut off heating element work automatically, send the sound and light alarm signal, and keep heating element to stop at operating state for a long time.So promptly energy-conservation, overcome again and make drinking water open the back to be heated repeatedly, thereby produce harmful carcinogen, be unfavorable for the disadvantage of health of human body.

2, the utility model can also be controlled liquid level automatically, and is former thereby cause the equipment lack of water or during the situation of leaking, will send the sound and light alarm signal rapidly, and stop heating element work by certain in whole use, in order to avoid burn out heating element because of lack of water.

3, housing of the present utility model, because of the fault of heating element or electric elements, and when causing electrification phenomenon harm personal safety, it will in time send the sound and light alarm signal, and stop heating element work, come the attention of reminds people, so that with its eliminating.

When 4, the utility model is applied in collective unit,, thereby alleviate nurse personnel's burden, make it reach automation if water filling port is used the height that electromagnetic valve device is controlled liquid level automatically instead.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 and Fig. 4 are the circuit theory diagrams of two embodiment of the utility model.

Fig. 2 is the vertical section structural map of Fig. 1.

Fig. 3 is the vertical section structural map of Fig. 4.

1. apparatus casings, 2. electrical heating elements RL3. O-ring seals, 4. insulation cushions, 5. power electrodes, 6. instrument insulation shells, 7. transformers, 8. printed circuit board (PCB)s, the 9. thermistor Rt10. integrated package LM32411. electrical verification utmost points (housing) and liquid-level probe a12. LED 13. relay J 14. bidirectional triode thyristor BCR15. water filling ports 16. electromagnetically operated valve DCFa.b.c liquid-level probes among the figure

Shown in Figure 1, power supply by the operating voltage of regulator block output 12V, is formed four part voltage comparator steady operations for operational amplifier LM324 behind rectifying and wave-filtering.These four comparators are respectively temperature control A ₁, the time-delay A ₂, electrical verification A ₃And liquid level A ₄Form.When touching, liquid level sensor probe ab sets under the no situation when charged of the liquid level limit and apparatus casing (dotted portion) temperature sensor probe subzero temperature resistance R _tRecord low its resistance that makes of water temperature and become big, A ₁Input current potential imbalance, thereby output is low level, LED ₁Do not work D ₉With Q ₁End Q ₂J work, J are ordered about in conducting ₁Closure makes RL energising heating, J with the BCR triggering and conducting ₂Closure makes LED ₅Bright indicating equipment is in the normal heating state, and J3 disconnects buzzer and do not ring.When after after a while, R ₁When detecting water temperature and reaching 100 ℃, its resistance diminishes, and makes A ₁The input potential balance, its output upset becoming high level, LED ₁Bright indication water is opened D ₉With Q ₁Conducting rapidly, Q ₂End that J is resetted, J ₁Disconnection makes that BCR is out of control to be ended, and the RL dead electricity stops to heat, J ₂Disconnection makes LED ₅Extinguish J ₃Closure makes buzzer send signal alarm.While A ₂Start working, make the input potential balance behind setting-up time, its output is to use next time to get ready.If in the middle of whole use, when producing lack of water or leaky by certain reason, this alarm all will make RL stop to heat in time, send the attention that the sound and light alarm signal comes reminds people.Its concrete course of work can be with reference to the front to the narration in the process of heating.C ₁And C ₂Tie point and housing be rectifier D ₅-D ₈In two inputs, when power supply appoint a single line contact with housing the time, rectifier does not have the voltage input, does not just export yet.C ₁And C ₂Capacity all be 1000PF, calculating its resistance according to the capacitive reactance formula is 3.3 megaohms, therefore so big resistance can not make the people touch housing and produce numb hand phenomenon.Adopt conducting that relay controls BCR in addition and end, control circuit and power unit are kept apart, thereby guaranteed the fail safe of equipment operation.

Among another embodiment shown in Figure 4, Fig. 4 only increases the automatic Detection ﹠ Controling water level function just that a cover is made up of operational amplifier 741, relay, bidirectional triode thyristor and electromagnetically operated valve DCF etc. than Fig. 1, and all the other functions are fully identical with Fig. 1.When liquid-level probe ab does not contact with liquid level, A ₄Export high level, send sound and light signal warning, A simultaneously ₄Pass through D ₁₃Make Q ₃Conducting output electronegative potential, C also is in exsiccosis because of probe, so 741 output high level order about the 2J action.2J ₁Closure makes BCR ₂Conducting, DCF energising are water filling.2J ₂Closure makes the 2J self-insurance.Along with the rising of liquid level, A when ab touches liquid level ₄Output low level is made Q ₃End, but 2J passes through 2J ₂Still be in the water filling state.When liquid level rises to when contacting with the C point, 741 are output as low level makes the 2J dead electricity reset 2J ₂Disconnection makes BCR ₂Out of control ending, DCF outage stopping water filling, 2J ₂Disconnection is removed self-insurance with 2J, prepares for using next time.Along with the use of drinking water, C point and liquid level break away from, and make 741 outputs return to high level again, but this moment A ₄Output low level still, 2J still can not work, and when probe ab disengaged once more with liquid level, 2J just can rework, so makes water filling reach the automatic control purpose.

In example shown in Figure 2, the electrical verification utmost point (11) is on the retainer instrument shell, and the Level Detection control of holding concurrently again simultaneously is because of the electrical verification utmost point (11) and liquid-level probe (a) are same current potential, (A so in the course of the work ₃) and (A ₄) two inputs do not disturb mutually, make its each output steady operation, so just utilize same parts to improve its utilance in the present embodiment.Among two embodiment of Fig. 2 and Fig. 3, temperature transducer (R _t) adopt epoxide-resin glue to be enclosed in the apparatus casing shell, it is closely combined with housing improve its sensitivity.Liquid level test probe (bc) must and seal with the apparatus casing insulation, improves the sensitivity that contacts or break away from water.

Claims

1, a kind ofly is used for the insulating pot of family and the multifunctional safe energy-saving type water on the big volume electric water boiler in the collective unit is driven the automatic control and alarm instrument, it partly is made up of rectifying and voltage-stabilizing, temperature control, liquid level and detection of electrical leakage, time-delay, sound and light alarm demonstration, noncontacting switch and electromagnetically operated valve, it is characterized in that: thermistor (Rt) is connected with apparatus casing, and its contact plane and housing plane parallel are provided with.

2, multifunctional safe energy-saving type water according to claim 1 is driven the automatic control and alarm instrument, it is characterized in that: Liquid level test probe (b) and (c) and apparatus casing extreme position insulation and the sealing set.

3, multifunctional safe energy-saving type water according to claim 1 is driven the automatic control and alarm instrument, it is characterized in that: electric capacity (C ₁-C ₂), diode (D ₅-D _a) and apparatus casing connect to form the electrical verification utmost point (11).

4, multifunctional safe energy-saving type water according to claim 1 is driven the automatic control and alarm instrument, it is characterized in that: Liquid level test probe (abc), integrated package (741), transistor (Q ₃), relay (2J), bidirectional triode thyristor (BCR ₂), electromagnetically operated valve (DCF) and apparatus casing connect to form water filling device.