CN2203109Y

CN2203109Y - Boil-over alarm device

Info

Publication number: CN2203109Y
Application number: CN 94243930
Authority: CN
Inventors: 韩语德
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-11-05
Filing date: 1994-11-05
Publication date: 1995-07-12
Anticipated expiration: 2004-11-05

Abstract

The utility model relates to a signal device which is a boil-over alarm device composed of a connection of an audio alarm circuit and an overflow pot test probe which controls the operation of the audio alarm circuit. The audio alarm circuit is composed of a loud-speaker and an acoustic frequency oscillating circuit which is connected with the loud-speaker. The overflow pot test probe is composed of a clamp, an insulating board which is fixed on the clamp and two metal probes which are arranged on the insulating board. The clamp is clipped on the rim of a pot. The two metal probes are extended into the pot and adjusted top and bottom to an appropriate position above the liquid level of soup or rice. When the front of the liquid level in the overflow pot ascends and touches the probes, the control circuit starts to oscillate and sends out an alarming voice, because the ascending soup liquid leads to the formation of scores of kilo ohms resistors between the two probes.

Description

Boil-over alarm device

The utility model relates to a kind of recoil simulator, and a kind of warning device that can listen indication that provides is provided or rather.

Cook, cook gruel or when cooking soup, the pot that overflows usually can take place, not only cause the loss of soup meal but also pollute the kitchen.Also may put out stove fire when using gas burner, cause coal gas to leak and form danger.For anti-Spill stopping pan, then need carefully look after, waste time and energy but can not prevent the whirlpool of overflowing fully.

The purpose of this utility model is a kind of excessive pot alarm of design, in time handles with the chimes of doom reminds people before the pot that overflows takes place.

Excessive pot alarm of the present utility model is connected and composed by the excessive pot of test probe of audible alarm circuit with the work of control audible alarm circuit, it is characterized in that:

Described audible alarm circuit connects loudspeaker by audio oscillator circuit and constitutes;

Described excessive pot test probe by clip, be fixed on the insulation board on the clip and be arranged on the insulation board and two metal probes that can be shifted up and down constitute.

Cook when cooking soup, clip is on the pot edge, two metal probes on the clip stretch in the pot and are adjusted at the appropriate position of soup meal liquid level top, when being about to overflow pot, soup meal liquid level rises and touches probe, present the resistance of a few K Ω to hundreds of K Ω between two probes, the starting of oscillation of control audio oscillator circuit drives loudspeaker and sends chimes of doom.

Further specify technology of the present utility model below in conjunction with the embodiment accompanying drawing

Fig. 1. pot alarm control circuit schematic diagram overflows

Fig. 2. the excessive pot of a pot alarm test probe structural representation overflows

Referring to Fig. 1, shown in Figure 1 is a transistor oscillating circuit that can produce audio signal, and control end A, the B of oscillating circuit is connected with the test probe of test soup meal liquid level, and the load of oscillating circuit is a loudspeaker Y, uses No. 5 batteries of two joints.

Shown audio oscillator circuit is by transistor T 1, T2, capacitor C 1, C2, resistance R connects and composes, the T1 base stage also connects a probe and C1 one end, another termination of C1 R one end, the T1 colelctor electrode connects the T2 base stage, and the T2 colelctor electrode also connects the R other end and described loudspeaker one end, the T1 emitter stage also connects the loudspeaker other end, power cathode and C2 one end, and the T2 emitter stage also connects capacitor C 2 other ends, another probe and positive source.

When inserting a few K Ω to the resistance of hundreds of K Ω at A, B point-to-point transmission, circuit just work produces audio signal, drives loudspeaker Y and sends and tick ... chimes of doom, can in tens meters scope, hear chimes of doom, reminds people is little or do other processing with thermal transfer.Constitute the audio oscillator circuit except available discrete component as shown in the figure during enforcement, also can select integrated component for use, as the oscillating circuit that constitutes with time base circuit 555, circuit production has two joints for the probe that connects the pot test probe that overflows in a capsule.

Referring to Fig. 2, the pot test probe that overflows comprises clip 1, two metal probe 2 and insulation board 3.Two metal probes 2 are plugged in the structure listrium 3, and the spacing of two metal probes is 5mm.Clip can be made of plastics or metal, probe 2 is made by the metallic conduction material, insulation between two probes is guaranteed by insulation board 3, the insulation board secured in parallel is on clip, two probes are plugged in the insulation board and can move up and down, and connect A, the B point of two probes and audio oscillator circuit respectively with two leads 4.

Clip on pot edge 5, is regulated probe and the suitable distance of liquid level 6 maintenances, notice that the probe lower end must be lower than the pot edge, when liquid level 6 failed to touch probe 2, A, B point-to-point transmission were high resistance circuit nonoscillatory among Fig. 1; Liquid level 6 risings touch two probes 2 when boiling, and A, B two select through soup and constitute path, and resistance is about Ω+K Ω, and the circuit starting of oscillation drives sound horn.

Use excessive pot alarm of the present utility model not only can avoid the pot that overflows, also can increase work efficiency, as can when cooking, doing other things; Be adjusted to little fire etc. again after adopting big fire to hear chimes of doom when cooking beginning.Being suitable for family or dining room uses.

Claims

1, a kind of excessive pot alarm is connected and composed by the excessive pot of test probe of audible alarm circuit with the work of control audible alarm circuit, it is characterized in that:

2, excessive pot alarm according to claim 1, it is characterized in that described audio oscillator circuit is by transistor T 1, T2, capacitor C 1, C2, resistance R connects and composes, and the T1 base stage also connects a probe and C1 one end, another termination of C1 R one end, the T1 colelctor electrode connects the T2 base stage, the T2 colelctor electrode also connects the R other end and described loudspeaker one end, and the T1 emitter stage also connects the loudspeaker other end, power cathode and C2 one end, and the T2 emitter stage also connects capacitor C 2 other ends, another probe and positive source.

3, excessive pot alarm according to claim 1 is characterized in that described two metal probes are plugged in the described insulation board, and the spacing of two metal probes is 5mm.