CN2344891Y

CN2344891Y - Double-safety alarm socket for electric kettle

Info

Publication number: CN2344891Y
Application number: CN 98225213
Authority: CN
Inventors: 邓刚
Original assignee: RONGHUA ELECTRICAL EQUIPMENT PLASTIC MACHINE MOULD FACTORY YIN COUNTY
Current assignee: RONGHUA ELECTRICAL EQUIPMENT PLASTIC MACHINE MOULD FACTORY YIN COUNTY
Priority date: 1998-09-25
Filing date: 1998-09-25
Publication date: 1999-10-20
Anticipated expiration: 2008-09-25

Abstract

The utility model discloses a double-safety alarm socket for an electric kettle, which comprises an electrothermal tube, a three-pin plug, a water temperature sensing device which can cut off a power supply when water is boiled, an electrothermal tube temperature sensing device which can prevent and give an alarm when an electric kettle is heated without water, and an indicating lamp which is used as a double-safety display, wherein the water temperature sensing device is composed of a bimetal leaf I, a spring leaf, a compression bar, an N pole movable contact leaf, an N pole stationary contact leaf, a push bar I, etc. The electrothermal tube temperature sensing device is composed of a bimetal leaf II, a push bar II, an L pole movable contact leaf and an L pole stationary contact leaf. The design of the utility model uses two bimetal leaves in the same socket to respectively realize two protection functions and can prevent repeated boiling of boiled water. The utility model not only improves the safety, but has the advantages of simple structure, small volume, reliable operation, etc. The utility model is an advanced new product for replacing the old ones.

Description

Dual fail-safe insulating pot alarm socket

The utility model relates to the insulating pot alarm socket, especially has water and opens automatic outage and work and extinguish and show and the alarm socket of warning function is protected in anhydrous dry combustion method.

At present, the mode of heating of insulating pot roughly has following several: what generally adopted (1) is the direct mode of heating of electrothermal tube, and its shortcoming is safety protection functions such as not automatic outage, anhydrous dry combustion method outage, very easily burns electrothermal tube, even causes other security incident; (2) simple water cut-offs electric mode, employing water is opened back perception weight saving and is cut off the power supply, and outage automatically by the direct perception water temperature of heat sensor, this kind mode realizes that by the method for sensing water cut-offs, the certain protection effect is arranged, but, but there is not this function as the protection of anhydrous dry combustion method for improper use; (3) install the mode of heating of anti-dry burning device additional; raise by perception electrothermal tube temperature anomaly and to realize that anhydrous dry combustion method protects automatically; certain advance is arranged in the design; but function singleness; as the patent No. is that 94219890.5 " anti-dry insulating pot heater " is exactly to utilize perception electrothermal tube variations in temperature to realize the anhydrous dry combustion method product of protection automatically; but this technology is opened automatic outage as realizing water, also need install an other cover water additional and cut-off electric installation, more the alarm free function.

The purpose of this utility model is to avoid the defective of prior art and provides a kind of water of both can having realized to open automatic outage, can realize anhydrous dry combustion method protection and the dual fail-safe insulating pot alarm socket of reporting to the police again.

The purpose of this utility model realizes by following technical proposal: comprise the shell, support and the base plate that interfix, electrothermal tube one utmost point fixing with base plate contacts with N utmost point movable contact spring, another utmost point contacts with L utmost point static contact, outer casing underpart is provided with the three-pin plug of being made up of N utmost point inserted sheet, L utmost point inserted sheet, earth electrode inserted sheet and links to each other with power supply, and the bimetal leaf of sense temperature, it is characterized in that described bimetal leaf comprises that the perception water temperature realizes that water opens the bimetal leaf I that automatic outage and work extinguish display unit and be inlaid in the support top; Directly contact with electrothermal tube, perception electrothermal tube temperature realizes that the bimetal leaf II of anhydrous dry combustion method protection and warning device is fixed on the base plate.

Described water is opened automatic outage and work and is extinguished display unit and comprise and be subjected to shell fragment intercalation that bimetal leaf I metamorphosis influences between depression bar and support, and depression bar is inlaid in mutually hinged linking to each other on the lampshade, the indicator light that work extinguishes demonstration is located at an one pin and the N utmost point movable contact spring contact that contacts the electrothermal tube pin in the lampshade, and the N utmost point movable contact spring that the drawn stem I promotes contacts with the N utmost point static contact that is fixed on the N utmost point inserted sheet of realizing outage simultaneously.

Described anhydrous dry combustion method protection and warning device comprise the push rod II that is subjected to bimetal leaf II metamorphosis and promotes; L utmost point movable contact spring and L utmost point inserted sheet that the drawn stem II promotes are fixed, and the L utmost point static contact that contacts with the electrothermal tube pin contacts with L utmost point movable contact spring another pin with the indicator light of doing the light on and off demonstration simultaneously.

The utility model compared with prior art; its design is to have used in same socket two bimetal leafs to realize dual fail-safe; realize respectively that promptly water is opened automatic outage and warning function is protected in anhydrous dry combustion method; can in time cut off circuit; reach the safeguard protection purpose; and after water cut-offs and must depression bar be depressed with manpower behind the electricity; could switch on again and heat up water; prevented that boiling repeatedly of water from boiling, improved the fail safe of using, this socket compactness; volume is little; function is many, and reliable operation is a kind of advanced renewal product.

Description of drawings.

Fig. 1 is the utility model master TV structure schematic diagram.

Fig. 2 is the upward view of Fig. 1.

Fig. 3 is the A-A cutaway view of Fig. 1.

Fig. 4 is the B-B cutaway view of Fig. 1.

Embodiment to the utility model is described in detail again below in conjunction with above-mentioned accompanying drawing.

Dual fail-safe insulating pot alarm socket (referring to Fig. 1-4) comprises shell (1), support (4) and the base plate (9) that interfixes with screw, and support and base plate are positioned at shell, electrothermal tube (5) one utmost points fixing with base plate contact with N utmost point movable contact spring (8), another utmost point contacts with L utmost point static contact (18), outer casing underpart is provided with the three-pin plug of being made up of N utmost point inserted sheet (13), L utmost point inserted sheet (21), earth electrode inserted sheet (22) (3) and links to each other with power supply, and between electrothermal tube shell and earth electrode inserted sheet, be provided with the grounding wafer (23) that links to each other, guarantee fail safe.

The bimetal leaf of sense temperature has bimetal leaf I (6) and bimetal leaf II (10).

The perception water temperature realizes that water opens the bimetal leaf I (6) that automatic outage and work extinguish display unit and be inlaid in support (4) top, be subjected to shell fragment (7) intercalation that the metamorphosis of bimetal leaf I influences between depression bar (16) and support (4), and depression bar has a bulb to be inlaid in last mutually hinged linking to each other of lampshade (2), lampshade is installed on the depression bar bulb in other words, lampshade is located in the shell side window and exposes manually push action, the indicator light (15) that work extinguishes demonstration is located in the case, an one pin contacts with the N utmost point movable contact spring (8) that is fixed on the base plate that contacts the electrothermal tube pin, the N utmost point movable contact spring that drawn stem I (14) promotes simultaneously and realize that the N utmost point static contact (12) that is fixed on the N utmost point inserted sheet of outage contacts, the push rod I is located in the support slidably.And between N utmost point movable contact spring and support, be provided with the spring I (11) that is arranged in rack groove, contact well with the electrothermal tube pin to guarantee N utmost point movable contact spring.

Perception electrothermal tube temperature realizes that the bimetal leaf II (10) of anhydrous dry combustion method protection and warning device is fixed on the base plate (9); the metamorphosis of bimetal leaf II promotes to be located in the base plate slidably push rod II (17); the L utmost point movable contact spring (20) that the drawn stem II promotes is fixed with L utmost point inserted sheet; the L utmost point static contact (18) that contacts with the electrothermal tube pin is fixed on the base plate, and it contacts with L utmost point movable contact spring another pin with the indicator light (15) of doing the light on and off demonstration simultaneously.And between L utmost point static contact and support, be provided with the spring II (19) that is arranged in rack groove, guarantee that L utmost point static contact contacts well with the electrothermal tube pin.

Dynamic structure of the present utility model is as follows:

The depression bar of Fig. 3 state near support, does not stress the push rod I owing to lifting on the depression bar afterbody simultaneously under the effect of shell fragment elastic force, and N utmost point movable contact spring contacts with N utmost point static contact, and the indicator light energising is shinny, and the electrothermal tube energising begins feedwater and heats.After water is boiled, water vapour sprays to the bimetal leaf I, make bimetal leaf I heating metamorphosis in the depression bar head, when metamorphosis power during greater than shell fragment elastic force, depression bar and lampshade lift backward, and the depression bar afterbody promotes the push rod I and acts on the N utmost point movable contact spring, N utmost point movable contact spring and N utmost point static contact are disengaged, the electrothermal tube outage, indicator light extinguishes, and the realization safe water is opened the function of automatic outage.And this moment, the bimetal leaf II directly contacted perception electrothermal tube variations in temperature with electrothermal tube, and under normal circumstances, the deflection of bimetal leaf II is not enough to promote the push rod II, so anhydrous dry combustion method power-off protection function is inoperative.

Water could be switched on again and heat up water after being opened and must depression bar being depressed with manpower after the automatic outage, has prevented that boiling repeatedly of water from boiling, and has improved safety in utilization.

Fig. 4 state is not when adding water or water and dryout in the kettle; because three-pin plug still links to each other with power supply, lampshade is depressed forward, and indicator light is bright; electrothermal tube is switched on and is in dry-fire condition; raise so the electrothermal tube temperature is unusual rapidly, make the bimetal leaf II produce aximal deformation value, be enough to promote the push rod II; L utmost point movable contact spring and L utmost point static contact are disconnected; the electrothermal tube outage, indicator light extinguishes, and reaches the purpose of safeguard protection.Simultaneously; outage back electrothermal tube temperature progressively descends again, and the distortion of bimetal leaf II also reduces gradually, when the power that acts on the push rod II automatically resets when acting on the power of push rod II less than L utmost point movable contact spring; L utmost point movable contact spring lifts and contacts with L utmost point static contact; electrothermal tube is switched on once more, and indicator light is bright, outage again after the electrothermal tube temperature is too high; indicator light extinguishes; so the indicator light phenomenon of continuous light on and off at short notice occurs, play prompting warning effect, realize anhydrous in the function of burning protection and reporting to the police.

Claims

1. dual fail-safe insulating pot alarm socket, comprise the shell (1) that interfixes, support (4) and base plate (9), electrothermal tube (5) one utmost points fixing with base plate contact with N utmost point movable contact spring (8), another utmost point contacts with L utmost point static contact (18), outer casing underpart is provided with by N utmost point inserted sheet (13), L utmost point inserted sheet (21), the three-pin plug (3) that earth electrode inserted sheet (22) is formed links to each other with power supply, and the bimetal leaf of sense temperature, it is characterized in that described bimetal leaf comprises that the perception water temperature realizes that water opens the bimetal leaf I (6) that automatic outage and work extinguish display unit and be inlaid in support (4) top; The bimetal leaf II (10) that directly contact with electrothermal tube (5), perception electrothermal tube temperature realizes anhydrous dry combustion method protection and warning device is fixed on the base plate (9).

2. dual fail-safe insulating pot alarm socket as claimed in claim 1, it is characterized in that described water opens automatic outage and work and extinguish display unit and comprise that shell fragment (7) intercalation that is subjected to the influence of bimetal leaf I (6) metamorphosis is between depression bar (16) and support (4), lampshade (2) is upward mutually hinged to link to each other and depression bar is inlaid in, the indicator light (15) that work extinguishes demonstration is located at an one pin and N utmost point movable contact spring (8) contact that contacts the electrothermal tube pin in the lampshade, and the N utmost point movable contact spring that drawn stem I (14) promotes contacts with the N utmost point static contact (12) that is fixed on the N utmost point inserted sheet of realizing outage simultaneously.

3. dual fail-safe insulating pot alarm socket as claimed in claim 2 is characterized in that being provided with between described N utmost point movable contact spring (8) and the support (4) the spring I (11) that is arranged in rack groove that guarantees that itself and electrothermal tube (5) pin well contact.

4. as claimed in claim 1) dual fail-safe insulating pot alarm socket; it is characterized in that described anhydrous dry combustion method protection and warning device comprise the push rod II (17) that is subjected to bimetal leaf II (10) metamorphosis and promotes; the L utmost point movable contact spring (20) that the drawn stem II promotes is fixing with L utmost point inserted sheet (21), and the L utmost point static contact (18) that contacts with the electrothermal tube pin contacts with L utmost point movable contact spring another pin with the indicator light (15) of doing the light on and off demonstration simultaneously.

5. dual fail-safe insulating pot alarm socket as claimed in claim 4 is characterized in that being provided with between described L utmost point static contact (18) and the support (4) the spring II (19) that is arranged in rack groove that guarantees that itself and electrothermal tube pin well contact.

6. dual fail-safe insulating pot alarm socket as claimed in claim 1 is characterized in that being provided with the grounding wafer (23) that links to each other between described electrothermal tube (5) shell and the earth electrode inserted sheet (22).