JPS63259322A - Portable cooking stove burner - Google Patents

Abstract

PURPOSE:To elongate the life of a fire-extinguishing sensor and to improve the thermal efficiency of the burner by providing a cut-away around the outer circumference of an annular head of a burner body and a recess at the lower surface adjacent thereto, providing a fire-extinguishing sensor in the cut-away part and an ignition source in the recess, covering them with a burner cap and relaying a small pilot flame to a heating flame to ignite a main tip. CONSTITUTION:A cut-away is provided around the outer circumference of an annular head part 61 of a burner body, and a lower side recess 64 communicating with the inner part of the burner through slits 63 is provided adjacent in the peripheral direction of the cut-away part. The upper part of the annular head 61 is covered with a burner cap 71. Further, a fire-extinguishing sensor 41 is provided upright in the cut-away part and an ignition source 31 is also provided upright in the recess 64. A remote wall 73 is provided at the corresponding positions of the cut-way part and the recess 64, and a slit 75 corresponding to the slit 63 and a slit 76 corresponding to the cut-away part are formed. A mixed gas from the slit 75 is ignited at the ignition source 31 and formed into a pilot flame flame. Thus, a mixed gas from the slit 76 is ignited and formed into a heating flame and a main tip 12 is ignited.

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 whose interior is a mixing chamber for fuel gas and primary air, and a pilot flame is used to ignite a main nozzle provided on the outer periphery of the burner. A stove burner has been proposed in which an outlet (window) is attached to the main crater, and the main crater is ignited by the pilot flame blown out from the window. In this case, the fire extinguishing sensor, which is a safety device sensor, was installed at a position close to the main nozzle on the outer periphery of the burner.

(Problems to be solved) As a result, the following problems arose.

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

(b) In order to smoothly ignite the main crater, a relatively large pilot flame 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 is applied to the burner due to boiling over, boiling over, etc.

(Means for solving the problem) In order to achieve the above object, the stove burner of the present invention has an annular head provided with a notch on the outer periphery and a recess on the lower surface side adjacent to the notch, A burner body having a hollow interior, a burner cap placed on the head and closing an upper end opening of the burner body including the notch, and forming a main vent on the outer periphery, and a burner disposed in the notch. A configuration consisting of a fire extinguishing sensor and an ignition source placed in the recess in parallel with the fire extinguishing sensor was adopted.

(Operations and Effects of the Invention) The stove burner of the present invention has a fire extinguishing sensor in the notch of the burner body, which is covered on one side by the burner head, so even if liquid is applied to the burner from above, the fire extinguisher can be extinguished. The sensor is exposed to X (t). Therefore, the durability of the extinguishing sensor is improved.Furthermore, a low-power flame is used as a pilot flame, relayed to the heated charcoal of the extinguishing sensor, and the heated charcoal ignites the main crater and It has good thermal efficiency because it compensates for the defects in the crater.

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

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

The burner 1 has a notch 62 provided on the outer periphery of a head 61 having a circular upper surface, and a lower recess that is adjacent to the notch 62 in the circumferential direction and communicates with the inside of the burner via a slot 7 and 63. 64 is provided, and the burner body 6 is hollow inside.
and an annular umbrella part 71 which is placed on the head 61 and covers the upper part of the notch part 62 and closes the second end opening I]65 of the burner body 6, and which protrudes downward from the center of the whole part 71. The burner cap 7 is provided with a cylindrical leg part 72 that is fitted into the head part 61, and the mixing pipe 8 is connected to a lower end opening 66 of the burner body.

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, there is an inner arcuate inner wall 73.
is provided to protrude downward and closes the opening of the burner body of the notch including the slit. Three slits 75 are formed at the lower end of this back wall 73, corresponding to the slits 63, and two slits 76 are formed corresponding to the notches 62. These slits 75
．． 76 are all connected to the inside of the burner so that the air-fuel mixture is blown out. Further, side walls 77 and 78 connected to the inner wall 73 are provided on both sides of the notch 62 to protrude downward and close the space between the cutout 62 and the upper end surface of the burner head 7. A thermocouple 41 as a fire extinguishing sensor is attached to the notch (52), a spark discharge electrode 31 is attached to the recess 64, and the recess 6 of the burner body
A spark discharge gap 3 is formed between the protrusion 6A protruding from the lower surface of 4.
It forms A. In addition, a comb-like protrusion 7A is provided around the outer edge of the lower surface of the entire burner cap 71 except between the side walls 77 and 78, and a ring-like protrusion 7A is provided between the burner cap and 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,
It serves as a mixture supply path for supplying a mixture of gas inside the burner and primary air to the spark discharge gap 3A, and 3
The two flames interact with each other to enhance the flame-holding effect.

Further, the slit 76 serves as a crater for heating charcoal 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 nozzle.

The upstream end 8I of the mixing tube 8 serves as an inlet for fuel gas and primary air, and the end face has an intake port 8 for primary air.
2 is provided.

The gas supply system 2 is connected to a gas conduit 21 connected to a gas pipe (none of which is shown) via a rubber hose, a valve 22, a knob 23 for operating the valve 22, and the valve 22, and the tip nozzle portion is connected to the valve 22. A nozzle pipe 24 inserted into the upstream end 81 of the mixing pipe is provided.

The ignition device 3 includes the spark discharge electrode 31 and a high voltage generating means 32 consisting of a combination of 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; It consists of a lead wire 33 that connects 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 the valve 2 with its output.
It consists of an electromagnet (not shown) installed in the valve 22 to maintain the valve body 2 in an open state, and when normal combustion occurs in the burner, the thermocouple 4
1 is higher than the set temperature, the valve 22 is kept open, and when the temperature of the thermocouple 41 falls below the set value due to extinguishing, etc., an interposed spring (not shown) is activated.
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 by the ejector from the primary air intake port 82 by the ejected flow of 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 a pilot flame A. This seed flame A ignites the air-fuel mixture blown out from the two sulins 1-76, which are the air-fuel mixture supply paths, and heating coal B for the thermocouple 4I is generated. This heated charcoal B is blown out from the flame outlet 11 and ignites the air-fuel mixture blown out from the main burner port 12. By relaying the flame from the pilot flame A to the heating charcoal B in this way, the pilot flame that does not contribute to heating efficiency can be reduced, and the heating power of the heating charcoal B can be increased to 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 heated charcoal B.

When liquid spills onto the burner due to boiling over, boiling over, etc. from the food to be cooked 10 being heated by the burner,
The spilled liquid is applied to the thermocouple 41 and the discharge electrode 31.
This prevents the product from being attached to the surface. 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.

The thermocouple 41 is placed near the outlet, and the one-flower discharge electrode 31 is placed deep therein, so that the liquid entering from the outlet is blocked by the thermocouple 41 and the electrode 3
The stain prevention effect of No. 1 can be further improved.

5 and 6 show a second embodiment.

In this embodiment, the outer hanging wall covering the outside of the recess 64 is abolished, and instead of the slit 75, three small holes 75A are provided.

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

These second and third embodiments also have the same effects as the first embodiment.

[Brief explanation of the drawing]

Fig. 1 is a 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, and Fig. 3 is a plan view of the head of the burner body.
The figure is a CC sectional view, and FIG. 4 is a front view of the burner head. 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 diagram: 100-- Burner 1- Burner
2-Gas supply system 3-.1 Ignition device 4.-Safety equipment; ξ
6-Burner body 7----Burner cap 62
-111 Notch part of burner body 64-・Concave part of burner body 11-11-Type flame outlet 31-
・-Spark discharge electrode 41- Thermocouple

Claims (3)

[Claims] (1) A burner body having an annular head having a notch on the outer periphery and a recess on the lower surface adjacent to the notch, and having a hollow interior; A burner including a burner cap that closes an upper end opening of a burner body including a notch and forming a main vent on the outer periphery, a fire extinguishing sensor disposed in the notch, and a fire extinguishing sensor disposed in the recess in parallel with the fire extinguishing sensor. Stove burner consisting of an ignition source. (2) The extinguishing sensor comprises a slit-shaped fire port provided in the side wall of the cutout, and a thermocouple arranged in the cutout of the burner body. The stove burner described in item 1. (3) The ignition source comprises a small slit-shaped crater provided in the side wall of the recess, and a spark discharge electrode arranged in the recess. Conlovana.