JPS62155429A - Burner for range - Google Patents

Abstract

PURPOSE:To improve cooking property and obtain safe property upon extinguishing of a burner due to boiling over by a method wherein the burner for a range is provided with porous ceramics flame ports on the upper pert thereof and equipped with three sets of mixing tubes on the lower part thereof while the supply of mixture for respective mixing tubes is controlled to change a combustion area and, further, a thermocouple is provided in the 'small' combustion area. CONSTITUTION:The amount of combustion in porous ceramics flame ports 16 is determined by the amount of gas injected from a large nozzle 3, a middle nozzle 6 and a small nozzle 9. When the amount of gas injected from respective nozzles 3, 6, 9 is designed to be 1,400kcal/h, 800kcal/h and 800kcal/h respectively, the amount of combustion can be changed into four stages of 3,000kcal/h, 2,200kcal/h, 1,600kcal/h and 800kcal/h by controlling the supply of mixture for respective nozzles. When boiling over is generated in an oven 23, the porous ceramics 16 and a thermocouple 25 are cooled, therefore, the thermal electromotive force of the thermocouple 25 is reduced and a safety valve in a gas circuit is put OFF whereby the supply of gas to an entire primary burner 15 may be intercepted.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a stove burner for domestic or commercial use.

Conventional technology In FIG. 6, 15 is a full-order burner, a porous ceramic 16 is arranged in the upper part, and one mixing tube 17 is arranged in the lower part.
yk is formed. 18 is a nozzle that supplies fuel to the mixing tube 17, and 19 is a mixture of gas and air. The mixture 19 passes through the flame hole passage of the porous ceramic 16,
It reaches the flame hole 16'. A flame 20 is formed near the flame hole 16' by an ignition operation from another source (not shown). 21 is a heat-resistant glass installed opposite to the upper part of the primary burner 15, and is fixed by a plurality of trivet claws 22. 2
3 is a pot, which is placed above the heat-resistant glass 21 and the trivet claw 22, and is heated. In addition, the heat resistance is improved by installing the lath 21, which prevents clogging of the flame hole 16' due to boiling water K from the pot 23.

24 is combustion gas.

Since the primary burner 15 using the ceramic flame hole e forms a flame 20 near the flame hole 16', the surface of the porous ceramic 16 becomes red hot, and infrared rays are emitted from there. Radiant heat from the porous ceramic 16 spreads to the glass 21
The combustion gas 2 passes through the pan 23 and heats the pan 23.
4 and conductive heat between the glass 21 and the pot 23.

Problems to be Solved by the Invention In the configuration shown in FIG. 6, the entire surface of the ceramic flame hole 16 becomes red hot, so that the pot 23 can be heated almost evenly. However, such a full-primary burner is set so that the combustion velocity and the flow velocity of the mixture 19 are balanced in the flame hole 16', and changes in the flow velocity of the mixture 19 affect the combustion state.

That is, if the amount of the air-fuel mixture 10 increases, the temperature near the flame hole 16' increases, the combustion speed increases, and flashback into the mixing tube 17 may occur. Further, if the amount of the air-fuel mixture 19 decreases, the temperature near the flame hole 16' decreases, and the combustion rate may decrease and the flame may lift.

In either case, combustion is incomplete and causes an increase in the amount of co.

In other words, if the combustion amount is changed, the combustion condition tends to deteriorate. For this reason, it was not possible to vary the combustion rate of 3,000 kcae/h to 800 kcae/b, which is required for a household stove burner, making it unsuitable for use as a stove burner.

The present invention solves the conventional problems, and uses a full burner to vary the amount of combustion and uniformly heat the pot.
The purpose was to improve cooking performance and to confirm safety when extinguishing the burner due to boiling over.

Means for Solving the Problems In order to solve the above problems, the stove burner of the present invention has porous ceramic flame holes in the soil part, and has three mixing pipes at the bottom, so that the mixing from the mixing pipes is not possible. By supplying air to the ceramic flame hole by dividing it into three concentric regions: large, medium, and small, and controlling the supply of air-fuel mixture to each mixing tube, the combustion area in the ceramic flame hole can be controlled. is variable in four stages, and
It has a configuration in which a thermocouple is installed in a small area.

Effects The present invention has the following effects due to the above-described configuration. The combustion area can be varied in four stages by supplying the mixture from the three mixing tubes to three concentric regions of the ceramic flame hole and controlling the supply of the mixture to each mixing tube. The amount of combustion can be varied. Furthermore, by installing a thermocouple in a "small" area, when extinguishing spills, the thermocouple detects the surrounding temperature and the thermoelectromotive force decreases, which turns off the safety valve and turns off the gas supply to the burner. This is to block the

Example Hereinafter, one embodiment of the present invention will be described based on the drawings.

The same numbers as the conventional example have the same names and the same parts. In FIG. 1, reference numeral 1 indicates a "large" mixing tube that sends air-fuel mixture to the lower outer periphery of the porous ceramic 16, and reference numeral 2 indicates a "large" mixing chamber. A nozzle "large" 3 is provided at the throat portion of the mixing tube "large" 1.

4 is the "inside" of the mixing tube that sends the air-fuel mixture to the lower middle part of the porous ceramic 16, and 5 is the "inside" of the mixing chamber. A nozzle "middle" 6 is provided at the throat portion of the mixing tube "middle" 4.

7 is a "small" mixing tube that sends the air-fuel mixture to the center of the lower part of the porous ceramic 16, and 8 is a "small" mixing chamber. A nozzle "small" 9 is provided at the throat portion of the mixing tube "small" 7. Reference numeral 10 denotes the air-fuel mixture sent to each of the above-mentioned mixing tubes. Reference numeral 11 denotes a gasket that seals between the porous ceramic 16 and each mixing chamber. 12 is a burner ring that fixes the porous ceramic 16. 13 is a full-order burner 15
This is a mark provided around the porous ceramic 16, and is installed on the top plate 14. 25 is a thermocouple, which is installed in the combustion area "l" U8 of the porous ceramic 16. 26 and 27 are lead wires that are connected to the safety valve in the gas circuit (
(not shown). 28 is a nut for fixing the thermocouple 25.

In FIGS. 2, 3, 4, and 5, 2' is the combustion area of the porous ceramic 16 corresponding to the mixing tube "dog" 1.
It is large. 5' is the combustion area "middle" corresponding to the mixing tube "middle" 4. 8' is the same combustion area "small" corresponding to the mixing tube r/to J.

In the above configuration, a flame 20 is formed in the flame hole 16' of the primary burner 15 by other ignition means (not shown). Now, the case where the combustion amount is varied will be explained. The amount of combustion in the porous ceramic flame hole 16 is determined by the nozzle "large".
3. Determined by the amount of gas ejected from the "medium" nozzle 6 and the "small" nozzle 9. For example, nozzle "large" 3 is 14
00kca g/h.

Nozzle “medium” 6 and nozzle “small” 9 are each 800
Set as kca e/h. In this case, the ratio between the combustion amount and the flame hole area of the porous ceramic 16 is constant. For example, flame hole load 0.31 kca 11! /hmm If the 2° nozzle "large" 3, the nozzle "medium" 6, and the nozzle /l/"small" 9 eject gas at the same time, the combustion amount will be 3000 kcae/h, and the combustion area "large" in the porous ceramic 16 will be '2', combustion area 'medium'5', combustion area 'small'8'
A flame 20 is formed. (Figure 2) Next, nozzle "large"
3. If gas is ejected from nozzle "middle" 6, 2200
kcae/h (1400+800), and a flame 20 is formed in the "large" combustion region 2' and the "medium" combustion region 5'. (Fig. 3) Also, when gas is ejected from nozzle "medium" 6 and nozzle "small" 9, the rate is 1600 kcag/h (8
00+800), a flame 20 is formed in the combustion zone "medium"5' and the combustion zone "small"8'. (Fig. 4) Finally, gas from only the "small" nozzle 9? 8 if it erupts
00 kcae/h, and a flame is formed in the "small" combustion zone 8'. (Fig. 5) By controlling the supply of air-fuel mixture to the 3f15 mixing pipe as described above, the combustion amount f 3000 kcae/h,
2200kcae/h, 1600kcae/h, 8
It can be varied in 4 steps: 00k ca O/h.

Further, since the combustion areas are formed concentrically, the flame can easily be transferred to another combustion area even when switching the combustion amount.

Next, when there is boiling over from the pot 23 to the porous ceramic 16, the porous ceramic 16 and the thermocouple 25 are cooled down, so the thermoelectromotive force of the thermocouple 25 decreases, and the safety valve (not shown) in the gas circuit ) is turned "OFF", and the gas supply to the primary burner 15 can be cut off.

Note that the thermocouple 25 is located approximately at the center of the porous ceramic 16;
Since it is provided in the combustion area "small" 8, it is possible to obtain a sufficient thermoelectromotive force to maintain the safety valve even when the combustion amount is varied in the four stages.

Effects of the Invention As described above, the stove burner of the present invention provides the following effects.

(1) Since the combustion amount is varied while keeping the flame hole load approximately constant, stable combustion can be maintained at all times.

(2) Since the combustion area can be set concentrically with respect to the bottom of the pot, and the combustion amount can be varied in four stages, uniform heating and cooking performance can be achieved.

(3) By providing a thermocouple approximately in the center of the porous ceramic, it is possible to prevent incomplete combustion in the burner and generation of raw material due to boiling over.

[Brief explanation of drawings]

FIG. 1 is a schematic cross-sectional view of a stove burner showing an embodiment of the present invention, FIGS. 2, 3, 4, and 5 are schematic plan views showing the combustion area, and FIG. 6 is a conventional FIG. 2 is a schematic cross-sectional view of an example of a conventional stove. 1... Mixing tube "thick", S... Mixing tube "
"Medium", 7...Mixing tube "Small", 16'...
・Ceramic flame hole, 2'... combustion area "large",
5'... Combustion area "medium", 8'... Combustion area "small", 25... Thermocouple. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure 3 Tenyoi J'\Yo condyle adult person Ryoko, area area Figure 4
Figure 5 'Hill w"tko9" @ area 1'
,J, ,Muji area Figure 6

Claims (2)

[Claims] (1) A porous ceramic flame hole is provided at the top, and 3 holes are provided at the bottom.
By supplying the mixture from the mixing tubes to three areas concentrically large, medium, and small with respect to the ceramic flame hole, and controlling the supply of the mixture to each mixing tube, the ceramic A stove burner with variable combustion area in the flame hole in four stages and a thermocouple installed in the small area. (2) The combustion areas are defined as first areas of large, medium, and small, second areas of large and medium, third areas of medium and small, and fourth area of small. Conlovana.