CN2551893Y

CN2551893Y - Gas timing switch

Info

Publication number: CN2551893Y
Application number: CN 02237228
Authority: CN
Inventors: 沈广岭
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-06-06
Filing date: 2002-06-06
Publication date: 2003-05-21
Anticipated expiration: 2012-06-06

Abstract

The utility model belongs to safety facilities for combustible gas equipment. The utility model aims to solve the problems of damage to cooking utensils or gas leakage which can cause fire or explosion when a user forgets to close fire before leaving. The utility model is a delay switch connected in series with the front part of a cooking utensil. The utility model is composed of a combustible gas valve, a timer and a warning device. The shaft end of the timer is provided with a multiple mounted cam. The end surface cam part of the multiple mounted cam controls the combustible gas valve, and a plane surface cam of the multiple mounted cam controls a switch of the warning device. The switch of the warning device can be connected with a light display or an audio display. Each time in use, the switch is initially switched on, and scheduled operating time is set. The utility model can be automatically switched off as soon as time delay runs out.

Description

The combustion gas time switch

Technical field: the utility model belongs to a kind of safety devices of gas-fired equipment, and it is specifically related to a kind of structure that is serially connected in the delay switch on the gas pipeline.

Background technology: along with development and people's living standard of industrial technology improves rapidly, in family life, the cooking kitchen range that with the combustion gas are the energy are more universal in the use, gas kitchen ranges commonly used has at present only been noted the convenience of igniting and the modification of outward appearance, do not have the safety devices of regularly limiting the quantity of, therefore on good equipment, also stay some unsafe hidden danger, as to boil water or when making meal the operator leave the kitchen because of other affairs and forget and close fire, just may cause very serious consequence, the water that boils can extinguish fire, and fire hazard or blast are overflowed in combustion gas for a long time; Forget that the food that closes fire will burn and can damage cooker.In addition, the long-term kitchen range that use long-term leakage then occurs if there is the not tight phenomenon of valve, and the lighter can influence healthy, and are heavy then cause fire or blast, also can cause serious consequence.

Summary of the invention: the purpose of this utility model is to leave the scene for solving the aforesaid Guan Huoer of forgetting, or, the valve of kitchen range leaks the special proposition of major accident this programme------combustion gas time switch that can cause because of existing, it is the delay switch that can artificially control of serial connection on the gas pipeline before kitchen range, at this switch of cooking operation front opening, can use its limiting time, also can the time that it is set is longer, can close voluntarily through certain hour again behind the end of operation, can guarantee user's household safe, it also is provided with the demonstration in advance that time-delay finishes, and gives the user to greatly facilitate and absolute safety.

By as above design, the feature of the combustion gas time switch that this programme provided is: it is made up of timer, burnt gas valve part and attention device part, be provided with the cam of a combined type at the afterbody of timer shaft, the guide rod of the gas valve of its burnt gas valve part and attention device part all contacts with the working face of combined type cam.

In this programme, its timer is a mechanical timer, is provided with knob at the front end of timer shaft, and the dial of demonstration time is arranged above protecgulum.Its burnt gas valve partly is made up of valve body, gas valve, bonnet, protecgulum and back-moving spring, its valve body is a housing that connects and various parts are installed, in its body, there are a plurality of holes to constitute passage, in its centre one stepped hole is arranged, above valve body, there is air inlet to communicate with big bore portion, there is venthole to communicate with the hole of mid diameter in the bottom, its gas valve is a T-shaped that has a vertical lower surface part in addition, its lower surface becomes tight cooperation with the upper surface of valve body macropore, and back-moving spring is pressed between bonnet and the gas valve.Its attention device is a position switch that is subjected to cam control, it is made of switch body, compression spring, guide rod and two electrodes, and a becket is arranged on guide rod, and two electrodes all are limber sheet metals, they are hugging guide rod, and the working face of cam pushed guide rod to by the compression spring.Its combined type cam is by plane cam and edge cam be combined into, and the working face of its plane cam is made up of three isometrical circular arc portions, and guide rod becket when the middle part is connected two electrodes.Its edge cam is made up of large end face, gap and a slope, and its gap position is corresponding with the smallest diameter portion of plane cam.

Adopt this programme can embody following superiority: 1. this combustion gas time switch is to be serially connected in a preceding delay switch of kitchen range, because it can be closed automatically by the time of agreement, so just can avoid aforesaid various accident to take place, and gives the assurance of family life with safety; 2. this time switch has strictness timer accurately, can rely on its to come regularly on some needs the operation of time control, gives the user with greatly convenient; 3. when still not enough, be provided with the prompting of attention device in the time of being arranged before switch finishes, its demonstration can be a light, also can be sound equipment; 4. its low cost of manufacture simple in structure, reliable in function can be guaranteed the safety of family, are suitable for making and promoting the use of in batches.

Description of drawings:

Fig. 1 is the front elevation of this programme combustion gas time switch.

Fig. 2 is the structural representation of this switch.

Fig. 3, Fig. 4 are the working state figures of burnt gas valve part in this switch.

Fig. 5, Fig. 6, Fig. 7 are the schematic diagrames of three kinds of duties of the attention device of this switch.

The specific embodiment: the embodiment of existing accompanying drawings this programme.This combustion gas time switch is to be serially connected in a delay switch on the gas pipeline before the kitchen range, and it is made up of burnt gas valve, timer and three parts of attention device.Its burnt gas valve part is by valve body 1, gas valve 8, bonnet 6, back-moving spring 7 is formed, valve body is a housing that has porous, one three layers stepped hole is arranged at its middle part, there is the macropore UNICOM of air inlet 5 and stepped hole the top, the outlet 9 of combustion gas and the mesopore UNICOM of stepped hole, gas valve is a T-shaped part in addition, the lower surface of its bonnet becomes tight cooperation with the upper surface of macropore, the bottom of valve rod becomes tight cooperation with the aperture of stepped hole, bonnet also becomes tight cooperation with valve body, between it and gas valve, adorn back-moving spring, under the effect of spring, gas valve is closed.Timer 13 is mechanical timers, it is installed on the valve body, at the timer front end knob 14 is arranged, shaft rear end is equipped with the cam 16 of a combined type, dial 3 is housed on protecgulum 15, the plane cam of its combined type cam is partly controlled attention device, and its edge cam is partly controlled gas valve.Its attention device is a position switch that is subjected to plane cam control, it is made of switch body 2, compression spring 18, the guide rod 17 that has becket and two electrodes 12, its guide rod is nonmetal guide rod, the compression spring effect under its lower end with contact with the circumferential section of plane cam, when position suitable, the becket of guide rod can be connected two electrodes, and the display that connects on two electrodes can be that light shows, also can be that sound shows.Plane cam has three kinds of different arc sections on the outer ring, guide rod is the duty of this switch when contacting with the diameter parts of maximum, guide rod is the closed condition of this switch when contacting with the part of minimum diameter, guide rod is a duty when contacting with mid diameter, closes to an end to be in the duty of attention device prompting.The edge cam of this cam partly is that a slope and a gap constitute, it is the duty of gas valve that its slope can make gas valve rise, its gap descends gas valve and gas valve is closed, and after assembling, the minimum diameter position of plane cam will adapt with the gap position of edge cam.This delay switch cuts out when operation finishes automatically, so will open this switch earlier when using at every turn, can go operation the time on demand, also can open it bigger, can close automatically after the use, it can overcome the various accident potential that aforesaid common kitchen range exist, and can guarantee the safety of family.The pilot sample of this programme proves through the experiment operation: it has characteristics simple in structure, easy to use, as to guarantee household safe.

Claims

1. combustion gas time switch, it is characterized in that it is made up of timer (13), burnt gas valve part and attention device part, be provided with the cam (16) of a combined type at the afterbody of timer shaft, the guide rod of the gas valve of its burnt gas valve part and attention device part all contacts with the working face of combined type cam.

2. according to the described combustion gas time switch of claim 1, the timer that it is characterized in that it is a mechanical timer, is provided with knob (14) at the front end of timer shaft, and the dial (3) of demonstration time is arranged in the top of protecgulum (15).

3. according to the described combustion gas time switch of claim 1, the burnt gas valve that it is characterized in that it partly is by valve body (1), gas valve (8), bonnet (6), protecgulum (15) and back-moving spring (7) are formed, its valve body is a housing that connects and various parts are installed, in its body, there are a plurality of holes to constitute passage, in its centre one stepped hole is arranged, above valve body, there is air inlet (5) to communicate with big bore portion, there is venthole (9) to communicate with the hole of mid diameter in the bottom, its gas valve is a T-shaped that has a vertical lower surface part in addition, its lower surface becomes tight cooperation with the upper surface of valve body macropore, and back-moving spring is pressed between bonnet and the gas valve.

4. according to the described combustion gas time switch of claim 1, the attention device that it is characterized in that it is a position switch that is subjected to cam control, it is made of switch body (2), compression spring (14), guide rod (17) and two electrodes (12), one becket is arranged on guide rod, two electrodes all are limber sheet metals, they are hugging guide rod, and the working face of cam pushed guide rod to by the compression spring.

5. according to the described combustion gas time switch of claim 1, the combined type cam that it is characterized in that it is by plane cam and edge cam be combined into, the working face of its plane cam is made up of three isometrical circular arc portions, and guide rod becket when the middle part is connected two electrodes.

6. according to the described combustion gas time switch of claim 1, it is characterized in that its edge cam is made up of large end face, gap and a slope, its gap position is corresponding with the smallest diameter portion of plane cam.