CN2586907Y

CN2586907Y - Flame-out protection safety gas kitchen range

Info

Publication number: CN2586907Y
Application number: CN 02272948
Authority: CN
Inventors: 张卓文; 徐洪辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-09-03
Filing date: 2002-09-03
Publication date: 2003-11-19
Anticipated expiration: 2012-09-03

Abstract

The utility model relates to a flame-out protection safety gas kitchen range which comprises a seat (1), a valve casing (2), a self-absorption valve (3), a switching valve (4), a furnace end (5), a fire divider (6) and a controller, wherein, the self-absorption valve (3) is arranged on the valve casing (2) and connected with the controller; the valve casing (2) is connected with the switch valve (4); a nozzle (4a) on the switch valve (4) is inserted into the cavity body of the furnace end (5); a thermocouple (7) is used as a temperature detector and connected with the controller; output signals of the thermocouple (7) are used as input signals of the controller; output signals of the controller controls the attraction and the restoration of the self-absorption valve (3); the opening and the closing of a gas duct in the valve housing (2) is controlled by the attraction and the restoration of the self-absorption valve (3). Because the thermocouple is used as the temperature detector, the utility model reduces energy consumption and can avoid outside environmental influence to make the output signals of the thermocouple accurate and to guarantee safety during flameout of the kitchen range; in addition, the utility model does not use an electromagnetic valve device to prolong the service life of a flame-out protection safety device.

Description

Blowout protection safety fuel gas kitchen range

1, technical field:

The utility model belongs to a kind of gas kitchen ranges, particularly a kind of blowout protection safety fuel gas kitchen range.

2, background technology:

Generally use along with gas kitchen ranges, to its security performance by people's growing interest, a kind of flame of selling on market at present detects the safety fuel gas kitchen range of blowout protection, comprise air inlet pipe, valve casing, self-priming valve, switch valve, burner, distributor, controller, flame detection electrode, air inlet pipe and valve casing are tightly connected, self-priming valve is loaded on the valve casing, valve casing and switch valve are tightly connected, nozzle on the switch valve is connected with burner, flame detection electrode is loaded on the burner of gas kitchen ranges, the earth polar of controller is connected with burner, during use, combustion gas is from distributor ejection and lighted, after between flame detection electrode and the earth polar flame being arranged, controller adds a voltage between flame detection electrode and earth polar, utilize the conduction property of flame, electrode and earth polar have electric current to pass through, feed back to controller, input signal as controller, controller is handled input signal, and when current value reaches setting value, signal of controller output is given the self-priming valve that is contained on the valve casing, valve open, fuel gas flow is by the passage on the valve casing; When current value less than setting value, controller cuts off the output signal to the self-priming valve on the valve casing, self-priming valve resets under self spring force effect, passage on the valve casing is closed, fuel gas flow can not be by the passage on the valve casing, said structure has also played the blowout protection effect, but its weak point is: the flame detection electrode of this kind blowout protection safety device is subjected to the influence of external environment bigger, there are foreign matter or slight disengaging fiery when flame between flame detection electrode and the earth polar, even flame is arranged, current value also can not reach setting value, like this, because of the signal of input is inaccurate, controller can not be effective, control self-priming valve exactly, blowout protection is subjected to very big influence; Because when normal the use, controller need be given between flame detection electrode and the earth polar voltage is provided, and has electric current to pass through, and power consumption is big, when using dc-battery as power supply, battery is short service life in addition.

The another kind thermocouple of Xiao Shouing in the market; magnetic valve blowout protection safety fuel gas kitchen range; comprise thermocouple; magnetic valve; switch valve; burner; distributor; air inlet pipe and switch valve are tightly connected; magnetic valve is loaded on the switch valve; control opening of fuel gas flow by magnetic valve; close; nozzle on the switch valve is connected with burner; thermocouple is loaded on the burner of kitchen range; thermocouple is in parallel with magnetic valve; when lighting combustion gas; thermocouple is through after the flame heat; the output electric energy; after the output electric energy of thermocouple reaches the electric energy that can make the magnetic valve adhesive; also need under the effect of external force, make magnetic valve be in attracting state; make fuel gas flow pass through switch valve; behind the adhesive electric energy of output electric energy less than magnetic valve of thermocouple; magnetic valve resets under the effect of self spring force; make fuel gas flow can not pass through switch valve; said structure has also played the blowout protection effect; but its weak point is: the magnetic valve of this kind blowout protection safety device is subjected to the influence of external environment big; perishable, service life is short.

3, summary of the invention:

The purpose of this utility model is to address the above problem, and provides a kind of and is not affected by the external environment, and power consumption is little, the blowout protection safety fuel gas kitchen range of long service life.

For achieving the above object, the utility model comprises base, valve casing, self-priming valve, switch valve, burner, distributor, controller, self-priming valve is loaded on the valve casing, be connected with controller, valve casing is connected with switch valve, nozzle on the switch valve is inserted in the burner cavity, thermocouple is as Temperature Detector, be connected with controller, the output signal of thermocouple is as controller input signal, the adhesive of the output signal of controller control self-priming valve, reset, by the adhesive of self-priming valve, the opening and closing of the control valve casing internal combustion gas passage that resets.

When the signal value of above-mentioned thermocouple output set value more than or equal to certain, self-priming valve was in the state of adhesive, and when the signal code of thermocouple output set value less than certain, self-priming valve was in reset mode.

The optimum range of above-mentioned setting value is the 3-7 millivolt;

The utility model utilizes thermocouple to be heated and produces the characteristic of electric energy owing to adopt thermocouple as Temperature Detector, and controller does not need to provide in addition electric energy to thermocouple, has reduced the consumption of energy like this; In addition, the utility model adopts thermocouple as flame detector, utilizes the heating and cooling characteristic of thermocouple, can avoid being affected by the external environment, and makes the output signal of thermocouple accurate, and is safe and reliable when guaranteeing to stop working; The 3rd: the utility model does not adopt electromagnetic valve device, increases the life-span of blowout protection safety device greatly.

4, description of drawings:

Fig. 1 cuts open for the utility model structure and shows schematic diagram;

Fig. 2 is the utility model schematic block circuit diagram.

5, the specific embodiment:

Embodiment:

Structural representation of the present utility model is as shown in Figure 1: comprise base 1, valve casing 2, self-priming valve 3, switch valve 4, burner 5, distributor 6, controller, self-priming valve 3 is loaded on the valve casing 2, be connected with controller, valve casing 2 is connected with switch valve 4, nozzle 4a on the switch valve 4 is inserted in burner 5 cavitys, and distributor 6 is loaded on burner 5 tops, and thermocouple 7 is fixed on the burner 5 by fixed support 8, controller and whole burner 6 are installed on the base 1, and thermocouple 7 is connected in series with controller.

Connect power supply, the strong signal of inhaling of controller output earlier makes self-priming valve 3 force adhesive, combustion gas is through the passage of valve casing 2, the nozzle of switch valve is to burner 5, then from the fire hole of distributor 6 ejection and lighted, the temperature detecting head 14 of thermocouple 7 is after flame heat, thermocouple 7 output signal values raise since 0, when the output signal value of thermocouple 7 rises to 5 millivolts of setting values, controller cuts off the previous strong signal of inhaling, output is kept signal to the self-priming valve 3 on the valve casing 2, and self-priming valve 3 is in keeps attracting state, and combustion gas burns away.When the flame accident is extinguished, thermocouple 7 temperature detecting heads 14 detect no flame heat, thermocouple 7 output signal values descend, when dropping to, the output signal value of thermocouple 7 sets when putting 5 millivolts, controller cuts off the signal of exporting to the self-priming valve 3 on the valve casing 2, self-priming valve 3 resets under the effect of self spring force, and valve casing 2 passages are in closed condition, and combustion gas can not be leaked to the outside.

The utility model is owing to adopt thermocouple as Temperature Detector; reduced the consumption of energy; can avoid being affected by the external environment; make the output signal of thermocouple accurate; guarantee when kitchen range are flame-out safe and reliable; in addition, the utility model does not adopt electromagnetic valve device, increases the life-span of blowout protection safety device greatly.

Claims

1, a kind of blowout protection safety fuel gas kitchen range; comprise base (1), valve casing (2), self-priming valve (3), switch valve (4), burner (5), distributor (6), controller; self-priming valve (3) is loaded on the valve casing (2); be connected with controller; valve casing (2) is connected with switch valve (4); nozzle (4a) on the switch valve (4) is inserted in burner (5) cavity, it is characterized in that thermocouple (7) is connected with controller.