CN2352894Y

CN2352894Y - Full automatic, safety and energy saving electric water heater

Info

Publication number: CN2352894Y
Application number: CN 98210330
Authority: CN
Inventors: 周长志
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-01-16
Filing date: 1998-01-16
Publication date: 1999-12-08
Anticipated expiration: 2008-01-16

Abstract

The utility model relates to a full automatic safety and energy saving electric water heater, belonging to the combined new technology of an electronic component and a drinking water appliance. The full automatic safety and energy saving electric water heater is used for an electric kettle in a family, and an electric water heater with large volume in a collective unit. A thermosensitive resistor, a float chamber, a test electrode, and an electromagnetic valve which are connected with the shell body of equipment are added to the existing insulation shell body. Therefore, the full automatic safety and energy saving electric water heater has the functions that the full automatic safety and energy saving electric water heater automatically controls water temperature, automatically detect a liquid level, and automatically detect whether the shell body of the equipment leaks electricity or not; the full automatic safety and energy saving electric water heater rapidly cuts off the power supply of a heater (to save electrical energy) after water is boiled; the full automatic safety and energy saving electric water heater sends out sound and light signals to alarm; the full automatic safety and energy saving electric water heater can be maintained in heating work stop (time delay memory) state for a long time; the full automatic safety and energy saving electric water heater can automatically control water injection.

Description

Automatic safety energy-saving electrothermic boiler

The utility model relates to a kind of electronic devices and components and combines with water appliance, is 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 formed by connecting by heating element heater, power electrode binding post, insulation fixed housing and boiler housing.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 heater are burnt out, so cause unnecessary loss.

The purpose of this utility model provides a kind of automatic safety energy-saving electrothermic boiler, whether it possesses automatic control water temperature, detect liquid level and apparatus casing automatically leaks electricity, and water is opened 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 (time-delay note 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 sensor 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 control water temperature automatically; It is sensor that liquid level detects by magnet in the float chamber and tongue tube, and the liquid level extreme position that itself and apparatus casing are set is connected, and improves the sensitivity that it contacts or break away from horizontal plane, thereby realizes detecting automatically the function of liquid level; Electric capacity, diode and apparatus casing connect to form very sensor of electrical verification, realize detecting automatically the function whether housing leaks electricity; Resistor-Capacitor Unit and integrated package are formed the time-delay memory function; Transistor, relay, buzzer and Light-Emitting Diode are formed the function that sound and light alarm shows; Transistor, relay, bidirectional triode thyristor are formed noncontacting switch, control the function that heating power supply is opened automatically; Integrated package, transistor, relay, bidirectional triode thyristor, magnetic valve, dry reed tube are formed the function of automatic control water filling mutually.

Owing to adopt such scheme, the utility model not only had prevent to also have energy-conserving action outside empty burning and the warning function of electric leakage.Its advantage is:

1, the utility model can not only be controlled water temperature automatically, but also using electricity wisely is cut off heating element heater work automatically when unboiled water is heated to 100 ℃, send the sound and light alarm signal, and keeps heating element heater to stop at duty for a long time.Be so energy-conservation overcome again 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, in whole use, by certain former thereby cause the equipment lack of water or the situation of leaking under, will send the sound and light alarm signal rapidly, and stop heating element heater work, in order to avoid burn out heating element heater because of lack of water.

3, housing of the present utility model, because of the fault of heating element heater 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 heater 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

Among the figure: 1. 7. 9. felt pad 10. bidirectional triode thyristor BCR 11. transformers 12. tongue tube G of float shell 8. magnet (disk type) of apparatus casing 2. electrical heating elements RL 3. O-ring seals 4. power electrode 5. instrument insulation shells, 6. float chamber shells (aluminium matter) ₁13. thermistor R _t14. the integrated package LM324 15. electrical verification utmost points (the stationary housing screw of holding concurrently) 16. Light-Emitting Diode LED, 17. relay J, 18. printed circuit board (PCB)s, 19. K switch, 20. water filling ports, 21. magnetic valve DCF a, low water level float chamber b, high water level float chamber

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 ₃, and liquid level A ₄Form.Set the liquid level limit and make magnet and tongue tube G when float chamber a touches by float ₁When being in same horizontal level, tongue tube be subjected to the strongest and adhesive of the magnetic line of force connect circuit and with the no situation when charged of apparatus casing (dotted portion) under, temperature sensor probe subzero temperature resistance R _tRecord low its resistance that makes of water temperature and become big, A ₁Input is a low level, LED ₁Do not work D ₉With Q ₁End Q ₂J work, J are ordered about in conducting ₁Closure makes R with the BCR triggering and conducting _tThe energising heating, J ₂Closure makes LED ₅Bright indicating equipment is in normal heating state, J ₃Disconnect buzzer and not loud.When after after a while, R _tWhen 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 ₉End 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, input potential balance behind the setting-up time, making output is high level, keeps RL and stops heating.If in the middle of whole use, when producing lack of water or leaky by certain reason, this boiler all will make RL stop to heat in time, send the sound and light alarm signal and come reminds people to note.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 ends go into end, 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 security of equipment operation.

Among another embodiment shown in Figure 4, Fig. 4 only increases by a cover by operational amplifier 741, relay 2J, BCR than Fig. 1 ₂And DCF, tongue tube G ₂Function Deng the automatic Detection ﹠ Controling water level height of forming.Custom according to user's drinking-water is provided with K switch ₁, be to stop to heat after normality water is opened during connection, be temperature constant state always is in the boiling water state during disconnection.K ₂Till the switch that makes a noise.D is set ₁₇Be to be K ₂Be in when disconnecting, if under the apparatus casing electric leakage situation, make buzzer send the alarm signal reminds people by it, all the other functions are fully identical with Fig. 1.G when float chamber a does not contact with liquid level ₁Be normally open, A ₄The output high level sends sound and light signal and reports to the police, simultaneously A ₄Pass through D ₁₃Make Q ₃Conducting output electronegative potential is Gu float chamber b also is in exsiccosis, so 741 output high level order about the 2J action, 2J ₁Closure makes BCR ₂Conducting, the DCF energising is water filling, 2J ₂Closure makes the 2J self-insurance.Along with liquid level rises, float chamber a touches liquid level, and makes G ₁The closing of contact, A ₄Output low level is made Q ₃End, but 2J passes through 2J ₂Still be in the water filling state,, make G when liquid level rises to when contacting with float chamber b ₂The closing of contact, 741 are output as low level makes the 2J dead electricity reset 2J ₁Disconnection 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, float chamber b and liquid level break away from, G ₂The contact disconnects, and makes 741 outputs return to high level again, but A4 this moment output low level still, 2J still can not work, and when float chamber a disengaged once more with liquid level, 2J just can rework, so makes water filling reach the automatic control purpose.

In embodiment illustrated in fig. 2, temperature transducer 13 (R _t) adopt epoxide-resin glue to be encapsulated on the device housings 1, its contact-making surface and device housings plane parallel are provided with, thereby improve its sensitivity of thermometry.Liquid level detecting sensor a is by float chamber shell 6, float housing 7, magnet 8 and tongue tube 12 (G ₁) constitute mutually.Float chamber shell 6 is a cylinder type, and it is provided with two circular holes with the axial line position respectively in two planes up and down, and purpose is to provide convenience for liquid drive float is moved up and down neatly.Float is made up of float housing 7 and magnet 8, produces bigger buoyancy in order to make float, and float housing 7 adopts polythene material, external form is the open cylinders build, in cavity is set, its external diameter conforms to magnet 8 external diameters, two contact-making surfaces adopt the epoxide-resin glue sealing to be integrated.Tongue tube 12 (G ₁) setting should be higher than two centimetres of heating element heater RL, be enclosed on the device housings 1 with epoxide-resin glue, and make its horizontal positioned, improve and magnet 8 interactional sensitivity.Vertical level is answered in the setting of float chamber shell 6, and be integrated with apparatus casing 1 usefulness epoxide-resin glue, when making magnet 8 in the float be in straight line with tongue tube 12, float withstands float chamber shell 6 tops, when liquid level is higher than its position like this, float position does not change with its change, makes tongue tube 12 contacts be subjected to the magnet 8 effect magnetic lines of force the strongest, and its closing of contact is constant.

Among another embodiment shown in Figure 3, structure and the float chamber a of liquid level detection float chamber b are just the same.Tongue tube 12 (G ₁) be arranged in the switch enclosure 19 for attractive in appearance, installation method is the same with the front narration just needn't to have been repeated.

Claims

1, a kind of insulating pot of family and automatic safety energy-saving electrothermic boiler on the big volume electric water boiler in the collective unit of being used for, it is formed by connecting by heating element heater, power electrode binding post, insulation fixed housing and electric water boiler housing, it is characterized in that: in the insulation stationary housing that is connected with device housings, be provided with by thermistor (R _t) be sensor, it is connected with apparatus casing, contact plane and apparatus casing plane parallel are provided with.

2, automatic safety energy-saving electrothermic boiler according to claim 1 is characterized in that: the extreme position that liquid level detects float chamber ab and apparatus casing setting is connected, and its contact plane and housing plane parallel are provided with.

3, automatic safety energy-saving electrothermic boiler according to claim 1 is characterized in that: electric capacity (C ₁-C ₂), diode (D ₅-D ₈) and the electrical verification utmost point (15) connect to form the electrical verification checkout gear.

4, automatic safety energy-saving electrothermic boiler according to claim 1 is characterized in that: liquid level detects by float chamber (ab), tongue tube G ₁And G ₂, integrated package (741), transistor (Q ₃), relay (2J), bidirectional triode thyristor (BCR ₂), magnetic valve (DCF) and apparatus casing connect to form water filling device.