CN2153305Y

CN2153305Y - Fully automatic temp.-control electrothermal kettle

Info

Publication number: CN2153305Y
Application number: CN 93205347
Authority: CN
Inventors: 董继明; 余建中
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-03-05
Filing date: 1993-03-05
Publication date: 1994-01-19
Anticipated expiration: 2003-03-05

Abstract

The utility model relates to a fully automatic temperature-control electrothermal water kettle which comprises a water kettle, an electrothermal member, a temperature control device, an alarm, a socket and a ground strip. The utility model is characterized in that a temperature regulating and over-temperature protecting device is composed of a ceramic rod, a bimetal strip, a press plate, a cover cap and a regulation column, wherein, the regulation column can regulate the bimetal strip to attach to the outer wall of a kettle body through the press plate; the electrothermal member is attached to the inner wall of the kettle body corresponding to the bimetal strip. The utility model is precise and adjustable by matching with the elastic function of the press plate, the water temperature can be controlled between 95 and 100 DEG C, and the thermal insulation status can be controlled between 95+-2 DEG C. The utility model has small draw arc between power connection and power disconnection, extends the service life, effectively prevents empty burning, and has safe utilization. The utility model is an ideal electrothermal cooker for families, enterprises and institutions.

Description

Fully automatic temp.-control electrothermal kettle

The utility model relates to a kind of electric kettle, particularly about a kind of High Precision Automatic control-temperature electric heating kettle.

Existing electric kettle in use, it is just excessive that water is opened the boiling back, water overflows and also can leak electricity outside plug, time has just been grown and has dryouied, heat generating member burns, also will cause accidents such as fire when serious, CN2053066U proposes a kind of full-automatic temperature-controlling electric kettle, is preventing that boiling water is excessive and is preventing to make progress aspect the dry combustion method, but existing the temperature controller life-span short, error easily, temperature controller is loaded on kettle bottom user can't in use regulate suitable control temperature, causes temperature controller sensitivity low excessively, and error is between 5-25 ℃, therefore need a kind of working stability, the electric kettle of precise control on the market.

Purpose of design of the present utility model provides the electric kettle of long precise control of a kind of temperature controller working stability life-span.

The technical scheme that the utility model adopted is; the full-automatic temperature-controlling electric kettle; it comprises kettle, electrothermal piece, temperature controller, alarm, socket and earth connection; it is characterized in that temperature adjustment and the overtemperature protection device formed by porcelain rod, bimetal leaf, pressing plate, block and adjustable column in addition; adjustable column is regulated bimetal leaf to be adjacent to the external wall of kettle by pressing plate, and electrothermal piece is near the corresponding kettle body of bimetal leaf inwall.

The advantage of such scheme makes bimetal leaf modification in the process of heating become microswitch after being that temperature controller improves structure and assembling, thereby prolongs contact endurance.Because power on/off is the fine motion state, and can regulate, so temperature-controlled precision improves greatly, brings up to 0.5～2 ℃ scope by 5～25 ℃ of control ranges, promptly realizes 95 ℃～100 ℃ accurately controls.Keeping warm mode can be controlled in 90 ℃～95 ℃ scopes, not with worrying the empty burning problem that takes place.

Below accompanying drawing is explained.

Fig. 1 is the utility model overall structure figure.

Fig. 2 is temperature controller, buzzer and kettle mounting structure figure.

Fig. 3 is the temperature controller structure chart.

Fig. 4 is the utility model circuit diagram.

Among the above-mentioned figure, 1 is the kettle body, and 2 is electrothermal piece, and 3 is leg rest, 4 is temperature controller, and 5 is ground strip, and 6 is outer cover, and 7 is socket, 8 is binding post, and 9 is buzzer and printed substrate thereof, and 10 is spring bearer plate, and 11 is adjustable column, 12 is ring flange, and 13 is fixed head, and 14 is hold-down screw, and 4-1 is block, 4-2 is a stationary contact, and 4-3 is the porcelain rod, and 4-4 is a bimetal leaf, 4-5 is a movable contact, and 4-6 is a ceramic shell, and 4-7 is a binding post.

Below in conjunction with the description of drawings example structure and the course of work.

The utility model is that temperature controller (4), buzzer (9), socket (8), ground strip (5) are placed in the interior pothole of kettle (1) sidewall, loads onto the bakelite outer cover (6) of waterproof, and interior pothole and outer cover cooperatively interact.Adjustable column (11) one ends are by spring bearer plate (10), and the other end is fixed by fixed head (13) and kettle body side wall, and adjusting pressing plate (10) is with block (4-1) spacing and regulates bimetal leaf (4-4) and the external wall of kettle gap.Regulate adjustable column (11) and can regulate accuracy of temperature control.See figures.1.and.2, electrothermal piece (2) two ends are fixed in the kettle concave side wall hole, in the middle of the electrothermal piece (2) to back bending near the corresponding inwall of thermostat (4).

The structure of temperature controller (4) has following characteristics; it is made up of copper block (4-1), stationary contact (4-2), porcelain rod (4-3), bimetal leaf (4-4), movable contact (4-5), ceramic shell (4-6) and binding post (4-7); wherein also have temperature adjustment and the overtemperature protection device formed by porcelain rod (4-3), bimetal leaf (4-4), spring bearer plate (10) copper block (4-1) and adjustable column (11); utilize bimetal leaf as microswitch, with control temperature and overtemperature prote effect.The state of bimetal leaf (4-4) modification has 3 processes, at first be the not duty of inner concave towards porcelain rod (4-3), be that electrical heating begins, the heating process that the sound contact joins, the bimetal leaf modification becomes evagination towards porcelain rod (4-3) by inner concave towards porcelain rod (4-3) when being heated to uniform temperature.That the sound contact is in is disconnected, state will break, still continue the energising heating this moment, during 95～100 ℃ of water temperatures, the outer convex surface of bimetal leaf continues projection and heads on porcelain rod (4-3), and porcelain rod (4-3) pushes downwards that movable contact (4-5) separates with stationary contact (4-2), power cutoff open.Water temperature will be kept 95～100 ℃, and bimetal leaf (4-4) is in the fine motion state.Regulate spring bearer plate (10) and kettle outer wall spacing if want to improve the insulation precision by adjustable column (11), dwindle the fine pitch between the dynamic and static contact, when optimum state, the kettle coolant-temperature gage is maintained in 95～100 ℃ of scopes.

Machinery and electrical equipment annexation, electrothermal piece (2) one is terminated at the stationary contact (4-2) of temperature controller (4), stationary contact (4-2) and movable contact (4-5) the two ends alarms (9) that alarm (9) is connected to temperature controller (4) are generally buzzer, also can adopt light emitting diode to do the light indication.

When using the full-automatic temperature-controlling electric kettle, as long as in the plug insertion socket (7), bimetal leaf (4-4) action (temperature is 98 ℃ ± 3 ℃) bimetal leaf of being close to the thermostat (4) of kettle sidewall after water boils promotes porcelain rod (4-3) moves down movable contact (4-5), thereby make quiet (4-2), movable contact (4-5) disengages, then electrothermal piece supply line is cut off, buzzer (9) just sends alarm sound, when the temperature of water is reduced to 85 ℃～95 ℃, bimetal leaf returns to the origin-location again and drives porcelain rod (4-3) and up moves, at this moment buzzer (9) just stops to sound, and no longer reports to the police.And quiet, movable contact contacts whole circuit once more and connects.Control temperature after the answer is 95 ℃～100 ℃, and the water in the kettle can not dryouied, and the part of heating can not burn yet, and contact endurance is no less than 30,000 times.

This electric kettle also has empty function of burning, when the user forgets dress water accidentally and carries out sky when burning, be close to kettle (1) near thermostat (4) because of electrothermal piece (2) two ends and middle part, at this moment the temperature of electrothermal piece (2) rises rapidly, and transfers heat to thermostat immediately on (4); When temperature rose to certain value, the bimetal leaf in the thermostat (4-4) action was cut off the electricity supply and is reported to the police, and at this moment the temperature of electrothermal piece (2) prevents empty the burning with regard to or else rising.When temperature was hanged down to certain value, temperature controller (4) can be connected whole circuit again.Electrothermal piece (2) leaks power supply less than 0.3mA after empty the burning, and hot electric strength 1000V/ per minute does not puncture, not flashover.

This insulating pot energy automatic power on-off, water can not overflow outside kettle, sanitation and hygiene, safety, water can not dryouied, and heater element can not burn, and also has the function of preventing dry combustion, reach the national standard of fully automatic electric hot-water bottle, the power saving that saves time, easy to use, can also report to the police, increasing work efficiency, is family, office, enterprises and institutions' drinking water, or the best electric heating appliance of various beverages.

Claims

1, full-automatic temperature-controlling electric kettle; it comprises kettle, electrothermal piece, temperature controller, alarm, socket and ground strip; it is characterized in that in addition temperature adjustment and the overtemperature protection device formed by porcelain rod (4-3), bimetal leaf (4-4), pressing plate (10), block (4-1) and adjustable column (11); adjustable column (11) is regulated bimetal leaf (4-4) by pressing plate (10) and is close to kettle body (1) outer wall, and electrothermal piece (2) is near the corresponding kettle body of bimetal leaf (4-4) inwall.

2, full-automatic temperature-controlling electric kettle according to claim 1 is characterized in that electrothermal piece (2) two ends fixedly in kettle (1) the concave side wall hole, and back bending is near the corresponding kettle body of thermostat (4) (1) inwall in the middle of the electrothermal piece (2).

3, full-automatic temperature-controlling electric kettle according to claim 1 and 2, it is characterized in that temperature controller (4) is located in kettle body (1) the concave side wall hole, can regulate the adjustable column (11) of tense-lax degree, by fixing kettle body (1) sidewall of fixed head (13), establish temperature controller (4) buzzer (9) and ground strip (5) in the case (6).

4, full-automatic temperature-controlling electric kettle according to claim 1 and 2, the stationary contact (4-2) that it is characterized in that electrothermal piece (2) one ends and temperature controller (4) joins, and alarm (9) is connected between the stationary contact (4-2) and movable contact (4-5) of temperature controller (4).