JPH0441244B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a cooking stove burner with measures against boiling over.

(Prior art) Conventionally, an ignition source is placed inside a burner, which is a mixing chamber for fuel gas and primary air.
A stove burner has been proposed in which a pilot flame outlet (window) for igniting the main crater provided on the outer periphery of the burner is attached to the main crater, and the pilot flame blown out from the window ignites the main crater. . In this case, the fire extinguishing sensor, which is the safety device sensor, is
It was attached at a position close to the main crater on the outer periphery of the burner.

(Problems to be solved) This has caused the following problems.

(b) The extinguishing sensor is easily exposed to liquid from boiling over or boiling over, and the durability of the extinguishing sensor is low.

(b) To smoothly ignite the main crater, a pilot flame with relatively large thermal power is required, but the contribution of this pilot flame to the heating of the object to be heated is small.

An object of the present invention is to provide a stove burner that can prevent a large amount of liquid from adhering to a fire extinguishing sensor and improve the durability of the fire extinguishing sensor even when a large amount of liquid comes into contact with the burner due to boiling over, boiling over, etc.

(Means for Solving the Problem) In order to achieve the above object, the cooking stove burner of the present invention has an annular shape and is open at the upper end, and has a vertical notch in the outer peripheral side wall that is open at the upper and lower sides; It connects to the notch and is blocked at the top,
a burner body having a head provided with a recess whose notch side and a lower part are open, and whose interior is hollow; and a burner body placed on the head and covering the upper part of the notch and the upper end opening. and a burner cap that closes the opening of the burner body facing the notch and has a row of comb-like protrusions formed on the lower surface corresponding to the outer peripheral edge of the opening and the edge of the notch, and the burner body and the burner cap At the outer periphery of the joint part, there is a crater row formed by the outer peripheral edge of the opening and the comb-tooth-shaped projection ridge row, and at least a crater row facing the recess and formed by the edge of the notch and the comb-tooth-shaped projection ridge row. a burner forming an annular crater row consisting of at least two craters that form a flame of a size equal to or larger than the crater in the crater row; a thermocouple fire extinguishing sensor heated by flames from at least two craters facing the recess; and a small thermocouple extinguishing sensor installed in the recess, juxtaposed beside the extinguishing sensor and facing the recess. It has a crater and an ignition source that ignites the small crater, and adopts a configuration in which the flame ignited in the recess transfers to at least two craters facing the notch, and further ignites a ring-shaped crater row. did.

(Operations and Effects of the Invention) The stove burner of the present invention has a fire extinguishing sensor disposed in the notch of the burner body whose upper part is covered with a burner head, so even if liquid is applied to the burner from above, the fire extinguishing sensor is It's hard to get started. Therefore, the durability of the fire extinguishing sensor is improved. Furthermore, since a low-power flame is used as a seed flame and relayed to the heating flame of the fire extinguishing sensor, the heating flame is ignited at the main vent and compensates for defects in the main vent, resulting in good thermal efficiency.

(Embodiments) Next, the present invention will be explained with reference to embodiments shown in FIGS. 1 to 4.

A stove burner 100 according to the present invention includes a gas burner 1, a gas supply system 2 to the burner 1, an ignition device 3, a safety device 4, and a stove case 5 that houses these.

The burner 1 includes a notch 62 provided on the outer periphery of a head 61 having a circular upper surface, and a lower recess 64 adjacent to the notch 62 in the circumferential direction and communicating with the inside of the burner via a slit 63. a burner body 6 with a hollow interior, an annular umbrella part 71 placed on the head 61, covering the upper part of the notch part 62, and closing the upper end opening 65 of the burner body 6; The burner cap 7 is provided to protrude downward from the center of the burner body and includes an annular leg portion 72 that is fitted into the head portion 61, and a mixing tube 8 that is connected to the lower end opening 66 of the burner body.

An arcuate inner wall 73 is provided at a position corresponding to the notch 62 and the recess 64 on the lower surface of the umbrella portion 71 of the burner cap, protruding downward, and the burner body of the notch including the slit is is blocking the opening. Three slits 75 are formed at the lower end of this back wall 73 in correspondence with the slits 63, and two slits 76 are formed in correspondence with the notches 62. These slits 7
5 and 76 are both connected to the inside of the burner so that the air-fuel mixture is blown out. Also notch 62
Side walls 77 and 78 connected to the back wall 73 are provided to protrude downward and close the space between the burner head 7 and the upper end surface of the burner head 7. A thermocouple 41 serving as a fire extinguishing sensor is attached to the notch 62, and a spark discharge electrode 31 is attached to the recess 64 of the burner body.
A spark discharge gap 3A is formed between the protrusion 6A protruding from the lower surface of the spark discharge gap 3A. Furthermore, a comb-like protrusion 7A is provided around the outer edge of the lower surface of the umbrella portion 71 of the burner cap, excluding the area between the side walls 77 and 78, and a ring-like protrusion 7A is provided between the outer edge 67 of the upper end opening of the burner body. The main crater 12 is formed. Further, the outer surface of the recess 64 is covered with an outer hanging wall 79. The three slits 75 are provided at equal intervals, and serve as a supply path for supplying the mixture of gas and primary air inside the burner to the spark discharge gap 3A, so that the three flames are mutually connected. acts on the body and enhances the flame-holding effect. Further, the slit 76 serves as a vent for the heating flame B for heating the thermocouple 41. Furthermore, the outer edge of the burner cap 7 corresponding to the notch 62 of the burner body serves as a pilot flame outlet 11 for igniting the main crater.

The mixing tube 8 has an upstream end 81 serving as an inlet for the fuel gas and primary air, and an intake port 82 for the primary air is provided at the end surface.

The gas supply system 2 includes a gas conduit 2 connected to gas piping (none of which is shown) via a rubber hose.
1, a valve 22, a knob 23 for operating the valve 22, and a nozzle pipe 24 connected to the valve 22 and having a tip nozzle inserted into the upstream end 81 of the mixing pipe.

The ignition device 3 includes a high voltage generating means 3 consisting of a combination of the spark discharge electrode 31, a piezoelectric element and a striking mechanism for applying an impact to the piezoelectric element, or a combination of a dry battery and a high voltage pulse generating circuit.
2, and a lead wire 33 connecting these. This high voltage generating means 32 is normally operated by the knob 23, and is designed to generate sparks in the discharge gap 3A in conjunction with the opening of the valve 22.

The safety device 4 includes the thermocouple 41 and an electromagnet (not shown) provided in the valve 22 so as to maintain the valve body of the valve 22 in an open state by its output.
When normal combustion occurs in the burner and the thermocouple 41 is heated by the flame B and the temperature of the thermocouple 41 is higher than the set temperature, the valve 22 is kept open and the temperature of the thermocouple 41 is lowered by extinguishing the fire. A spring (not shown) is released when the
The valve body operates in the valve closing direction due to the action of the valve body.

Next, the operation of this stove burner 100 will be explained.

When the knob 23 is pressed, the valve 22 opens, and gas is ejected from a nozzle pipe 24 connected downstream of the valve 22. Air is sucked in from the primary air intake port 82 by the ejector of this gas, mixed in the mixing tube 8 and supplied into the burner body 6. When the knob 23 is rotated in conjunction with the pushing operation of the knob, the ignition device 3 is activated, sparks are generated in the spark discharge gap 3A, and the air-fuel mixture is blown out from the three slits 75 that are air-fuel mixture supply paths. is ignited, producing pilot flame A. This seed flame A ignites the air-fuel mixture blown out from the two slits 76, which are the air-fuel mixture supply paths, and a heating flame B of the thermocouple 41 is generated. This heating flame B is blown outward from the flame outlet 11 and ignites the air-fuel mixture blown out from the main nozzle 12 of the burner. By relaying the flame from the pilot flame A to the heating flame B in this way, it is possible to reduce the pilot flame that does not contribute to heating efficiency, increase the thermal power of the heating flame B, and quickly heat the thermocouple 41. The main crater 12 can be ignited smoothly. Furthermore, it is also possible to compensate for defects in the flame array of the main crater 12 with the heating flame B.

When liquid spills over the burner due to boiling over, boiling over, etc. from the food to be cooked 10 being heated by this burner, the boiling over liquid is transferred to the thermocouple 4.
1 and discharge electrode 31 is prevented. In this case, since the outside of the thermocouple 41 is protected by the outer hanging wall 79, even if a large amount of liquid boils over due to boiling of milk during heating, adhesion of liquid can be reliably prevented. Since the thermocouple 41 is placed near the air outlet and the one-flower discharge electrode 31 is placed deep therein, the liquid entering from the air outlet is blocked by the thermocouple 41, and the electrode 31 is prevented from becoming contaminated. You can improve even more.

5 and 6 show a second embodiment.

In this embodiment, the outer hanging wall covering the outside of the recess 64 is eliminated, and three small holes 75A are provided in place of the slits 75.

FIG. 7 shows a third embodiment. In this embodiment, an outer hanging wall 79 is provided in the recess 64 in the second embodiment.
has been established.

In these second and third embodiments, the first
It has the same effect as the example.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view schematically showing a gas stove according to an embodiment of the present invention, Fig. 2 is a plan view of the head of the burner body, Fig. 3 is a cross-sectional view taken along line C-C, and Fig. 4 is a cross-sectional view of the burner head. It is a front view. FIG. 5 is a plan view of the head of the burner body of the second embodiment, FIG. 6 is a front view of the burner head, and FIG. 7 is a sectional view of the burner head of the third embodiment. In the figure, 100... Stove burner, 1... Burner, 2... Gas supply system, 3... Ignition device, 4...
Safety device, 6... Burner body, 7... Burner cap, 62... Burner body notch, 6
4... recess of burner body, 11... seed flame outlet, 31... spark discharge electrode, 41... thermocouple.

Claims (1)

[Scope of Claims] 1. A notch having an annular shape and opening at the upper end, and having a vertical notch in the outer circumferential side wall with the upper and lower parts open, and continuous with the notch and having the upper end closed,
a burner body having a head provided with a recess whose notch side and a lower part are open, and whose interior is hollow; and a burner body placed on the head and covering the upper part of the notch and the upper end opening. and a burner cap that closes the opening of the burner body facing the notch and has a row of comb-like protrusions formed on the lower surface corresponding to the outer peripheral edge of the opening and the edge of the notch, and the burner body and the burner cap At the outer periphery of the joint part, there is a crater row formed by the outer peripheral edge of the opening and the comb-tooth-shaped projection ridge row, and at least a crater row facing the recess and formed by the edge of the notch and the comb-tooth-shaped projection ridge row. a burner forming an annular crater row consisting of at least two craters that form a flame of a size equal to or larger than the crater in the crater row; a thermocouple fire extinguishing sensor heated by flames from at least two craters facing the recess; and a small thermocouple extinguishing sensor installed in the recess, juxtaposed beside the extinguishing sensor and facing the recess. A stove burner comprising a crater and an ignition source for igniting the small crater, wherein the flame ignited in the recess is transferred to at least two craters facing the notch, and further ignites an annular row of craters.