CN2424375Y

CN2424375Y - Cutoff safety device for gas kitchen range

Info

Publication number: CN2424375Y
Application number: CN 00233280
Authority: CN
Inventors: 林武弘
Original assignee: HAOSHAN INTERNATIONAL CO Ltd
Current assignee: HAOSHAN INTERNATIONAL CO Ltd
Priority date: 2000-05-16
Filing date: 2000-05-16
Publication date: 2001-03-21
Anticipated expiration: 2010-05-16

Abstract

The utility model relates to an extinguishing safety device for a gas kitchen range, which comprises a thermal couple for inspecting and knowing flames arranged on a furnace end and an electromagnetic valve arranged on a gas switch. A wire is connected between the thermocouple and the electromagnetic valve. The utility model also comprises a temperature control switch which is connected in series on the wire between the thermocouple and the electromagnetic valve and fixedly arranged on the gas kitchen range. Gas can totally be blocked by the utility model under the conditions of abnormal extinguishing or abnormal high temperature, and use safety is enhanced.

Description

The gas kitchen ranges safety device that stops working

The utility model relates to a kind of gas kitchen ranges blanket.

General gas kitchen ranges blanket all belongs to thermojunction type, it is that thermocouple is installed on the furnace combustor, and the principle of thermocouple, it is two ends welding with two kinds of different metals, binding site at an end of high temperature heating is called hot junction, binding site in low-temperature end is that datum mark is also referred to as cold junction, and hot and cold contact can form the loop of closed.When two ends produced the temperature difference, temperature difference can produce electric current (thermocurrent), and can produce electric power (heat plays electric power).

As Fig. 1, shown in 2, when above-mentioned thermocouple 1 is installed on the burner 2, and on a burnt gas switch 3, be equiped with a magnetic valve 4, involve with electric wire 5 between this thermocouple 1 and the magnetic valve 4, by opening that burnt gas switch 3 backs down this magnetic valve 4 and the flame of lighting burner 2, can the front end (hot junction just) of this thermocouple 1 be heated and a generation heat electric power, and the electromagnet 401 that makes these magnetic valve 4 inside has thermocurrent flowing, then the coil of this electromagnet 401 generation electromagnetic force can hold the iron plate 403 on the axostylus axostyle 402, can make and stretch a valve block 404 that is located at these burnt gas switch 3 inside and on the fuel gas path 301 of these burnt gas switch 3 inside, break away from, and can make combustion gas enter this burnt gas switch 3 inside, export this burner 2 again to after the control through closing son and produce suitable flame, when gas kitchen ranges in use just in case when flame-out, the hot junction Yin Wendu of this thermocouple 1 reduces, from electromagnet 401 on break away from this iron plate 403 because of failing to produce magnetic force this moment, and this valve block 404 is kept in the center and with fuel gas path 301 blocking-up, and reach the security purpose of automatic blocking-up combustion gas.

Though the above-mentioned safety shutdown device of installing on gas kitchen ranges, can reach purpose safe in utilization, but above-mentioned safety shutdown device only has effectiveness to undesired flameout state, then invalid fully for undesired high temperature, just, when the user at container (pan, teapot etc.) fail stove fire is closed after the liquid of inner splendid attire boils, and stove fire still continues container is heated, then behind the moisture content evaporate to dryness of internal tank, the gas kitchen ranges deck plates of container and burner periphery etc. are elevated temperature gradually all, and above-mentioned blanket is for undesired high temperature and can't produce the function of blocking-up combustion gas.Therefore, not fool proof on gas kitchen ranges uses, the stove top made from aluminium material particularly, about 630 ℃ will produce softening, so undesired high temperature can the initiation potential accident.

It is a kind of when gas kitchen ranges produces undesired high temperature that the purpose of this utility model is to provide, and can detect and block fuel gas path, thus the flame-out safety device of the gas kitchen ranges that can use safely.

The gas kitchen ranges of the present utility model safety device that stops working is included in to be equiped with on the burner and one detects the thermocouple of flame, is equiped with a magnetic valve on a burnt gas switch, is to link with electric wire between this thermocouple and the magnetic valve, it is characterized in that:

Also comprise a temp control switch, this temp control switch is that series connection is arranged on the electric wire between this thermocouple and the magnetic valve, and is installed on this gas kitchen ranges.

The described gas kitchen ranges safety device that stops working, it is characterized in that: this temp control switch is installed on the burner.

The described gas kitchen ranges safety device that stops working, it is characterized in that: this temp control switch is installed on the gas kitchen ranges panel of contiguous burner.

So effect of the present utility model is, no matter be undesired flame-out or undesired high temperature, combustion gas all capable of blocking, safer in the use.

In addition, structure of the present utility model is the gas kitchen ranges applicable to various types, and as the table top stove of present embodiment or other stoves, embed stove etc., and simple structure of the present utility model, to make assembly easy.

Below by most preferred embodiment and accompanying drawing the flame-out safety device of gas kitchen ranges of the present utility model is elaborated, in the accompanying drawing:

Fig. 1 is the combination section of general gas kitchen ranges.

Fig. 2 is the thermocouple of general gas kitchen ranges and the installing schematic diagram of magnetic valve.

Fig. 3 is the schematic perspective view of the flame-out safety device of the utility model preferred embodiment.

Fig. 4 is that the temp control switch of the utility model preferred embodiment is overlooked the installing schematic diagram.

Fig. 5 is the temp control switch forward sight installing schematic diagram of the utility model preferred embodiment.

Fig. 6 is the temperature curve table in each site of the temp control switch of the utility model preferred embodiment.

Shown in Fig. 3,4, the gas kitchen ranges of the present utility model safety device that stops working is to be equiped with a thermocouple 10, a magnetic valve 20, an electric wire 30 and a temp control switch 40 in a stove and accessory 100 inside.

This stove and accessory 100 is identical with general structure, be to be provided with a panel 120 at a housing 110 end faces, and housing 110 inside is equiped with two burners 130 and two burnt gas switch 140.

This thermocouple 10 is installed in burner 130 inside, and its hot junction 11 is in order to detect the flame temperature of burner 130.

This magnetic valve 20 is installed on the burnt gas switch 140, it is stretched an end that is located at these burnt gas switch 140 inside and is provided with an axostylus axostyle 21 and a valve block 22, when the hot junction 11 of this thermocouple 10 is subjected to the flame combustion effect and promotes temperature, can make this valve block 22 break away from the fuel gas path of burnt gas switch 140 that (this is partly identical with general prior art, so no longer be described in detail at this, and can be) with reference to figure 2, and it is inner and reach the purpose of lighting stove fire to make combustion gas enter this burnt gas switch 140, on the contrary, during fray-out of flame, this valve block 22 is kept in the center and fuel gas path is blocked, and reaches the purpose of the blocking-up combustion gas of autotomying.

This electric wire 30 involves between thermocouple 10 and magnetic valve 20.

This temp control switch 40 can be connected and is arranged on this electric wire 30, and between this thermocouple 10 and magnetic valve 20, it is installed on this burner 130 or panel 120 bottom surfaces of contiguous burner 130, shown in Fig. 4,5, definable position I is for being installed in burner 130 outer ring surfaces, and the position II is for being installed in the bell bottom surface, and the position III is for being installed in the bell lateral surface, on the panel 120 of position IV for contiguous burner, can sense different temperatures respectively by position I, II, III, IV.

Through test, as table 1 explanation and shown in Figure 6, the environment set condition is: uses the liquid combustion gas (gaseous-pressure is 500mmH2O) of barreled, inner and outer ring stove fire standard-sized sheet, placement fills 2000cc water and diameter is the slaughterhouse of 28cm on grate.Simultaneously, use the electronic type temperature tester to place above-mentioned 4 points, measured once, and surveyed altogether 12 times in per 10 minutes.When continuing to be heated to 80 minutes, this temp control switch 40 is in the position I, II, III, 151 ℃ of IV difference sensings, 197332 ℃, 120 ℃, when removing slaughterhouse, the state that the simulation slaughterhouse dryouies, put the thick iron plate of 3mm in burner 130 tops and change, testing time is when continuing 40 minutes again, the position I, II, III, IV is distinguished 194 ℃ of sensings again, 299 ℃, 405 ℃, 181 ℃, by above-mentioned test as can be known, in order to ensure safety in utilization, can be with the position I, II, III, the limiting temperature of IV is set at 180 ℃ respectively, 250 ℃, 360 ℃, 150 ℃, and present embodiment can select to be installed in arbitrary position with this temp control switch 40, and when temp control switch 40 sensing temperatures of arbitrary position surpass above-mentioned design temperature, promptly cut off heat and play electric power, and make these magnetic valve 20 losss of excitation and block fuel gas path, and can reach the purpose of using gas kitchen ranges safely.

For another example shown in Fig. 3～5, assembled when this stove and accessory 100 and to have finished and when connecting combustion gas, after the user opens this burnt gas switch 140 and makes burner 130 produce flame, this thermocouple 10 detects flame can make the valve block 22 of magnetic valve 20 continue to be broken away from the fuel gas path of burnt gas switch 140 inside by the electromagnet suction, and reach the purpose that boils, when this burner 130 undesired when flame-out, the hot junction 11 of this thermocouple 10 detects temperature to be reduced, make this valve block 22 block fuel gas path, and reach the purpose of blocking-up gas supply.

In addition, at these burner 130 flame normal combustion states, and the liquid of slaughterhouse inside is during by evaporate to dryness, because of the temperature of slaughterhouse can continue to raise, make the temperature of this burner 130, panel 120 also can increase gradually, when these temp control switch 40 sensed temperature surpass the temperature extremes of setting, can cut off heat and play electric power, make this valve block 22 block fuel gas path, and reach the purpose of blocking-up gas supply.

Table 1

Claims

1, the flame-out safety device of a kind of gas kitchen ranges is included in to be equiped with on the burner and one detects the thermocouple of flame, is equiped with a magnetic valve on a burnt gas switch, is to link with electric wire between this thermocouple and the magnetic valve, it is characterized in that:

2, the flame-out safety device of gas kitchen ranges as claimed in claim 1, it is characterized in that: this temp control switch is installed on the burner.

3, the flame-out safety device of gas kitchen ranges as claimed in claim 1, it is characterized in that: this temp control switch is installed on the gas kitchen ranges panel of contiguous burner.