JPS63273707A - Cooking stove burner - Google Patents

Abstract

PURPOSE:To dissolve the irregularity in heating distribution on objects to be heated by a method wherein the upper surface of a burner cap is closed and a few small flame parts are formed and introducing grooves for secondary air are formed at the part at least lower than the upper edge of main flame ports and inner flame ports are also formed in the grooves. CONSTITUTION:At the peripheral edge of the upper surface 15 of a burner cap 14 a number of tooth-shaped parts 16 are formed and main flame ports 17 are formed between the tooth-shaped grooves and the upper surface of a burner head 13 and small gaps between the tooth-shaped parts and the upper surface of the head 13 are placed to form small flame parts as small flame ports 18. Introducing grooves 19 for secondary air are cut and formed at the parts 18 and their inlet parts 19 are located at the lower parts than the upper edges of the ports 17 to make the inflow of the secondary air easier. Inner flame ports 20 formed in the grooves 19 are located at the higher parts than the bottoms of the grooves 19. Fuel and premixed air are supplied to a mixing tube 12 and mixed and then supplied from the head 13 to the cap 14 and ejected and burnt from the ports 17, the ports 18 as a part of the ports 17, and the ports 20.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a stove burner for cooking.

Conventional technology Conventional stove burners are shown in FIGS. 4 and 5.

Fig. 4 shows a stove burner, which is commonly used in Western Europe, and consists of a mixing pipe 1 and a burner cap 4 that closes off the upper surface 2 and has a large number of flame holes 3 around it. Fig. 5 shows a burner head 5, which forms part of the mixing tube 1, with an air passage 6 opened at the center thereof, and a burner cap 4 with a through hole in the center placed on top of the burner head 5, which has a large number of holes on the outer periphery. It has a flame hole 3 with an inner flame hole inside, and is used in gas staples in Japan. In the former case, when a pot is placed on the top via a trivet or the like, air is not easily supplied to the inside of the flame formed in the flame hole 3, and a flame band is not formed inside, making the flame long. Therefore, it is necessary to increase the burner diameter or set the combustion amount to be small, and the distance between the burner and the pot also needs to be large, resulting in poor thermal efficiency. In addition, the flame is long and spreads widely, resulting in poor temperature distribution, which is a problem with the cooking situation in Japan, so it is not used except in some stationary types. The latter method supplies air from the center, so the flame is short, and it also creates an internal flame, making it easy to heat pots, etc. (Because the heat distribution is good and it can be adapted to various types of cooking in Japan, the above-mentioned 3B/゛ disadvantage has been solved, and gas stove burners in Japan are in practical use. (Center) The boiling liquid falls into the equipment from the air passage, making it dirty and making it difficult to clean.The former has the disadvantage that the burner does not have a vent to the bottom, as is clear from Figure 4, and other The hole in the lower part of the device can be closed (except for the burner, which is also the component surface in the latter), so the boiling liquid will not fall to the bottom of the device, and it has the advantage that it can always be kept clean by simply wiping the top surface.

Problems to be Solved by the Invention: As mentioned above, the present invention utilizes the features of the stove burner without a central air vent, and also has the problems of poor combustibility and heat distribution that does not allow heating in the center. This is to eliminate the disadvantages of

Means for Solving the Problems In order to solve the above problems, the burner of the present invention closes the top surface of the burner cap, forms a main flame hole around the periphery with a large number of tooth grooves, and has several holes in the tooth grooves. The tooth profile is configured to be wide and shallow to form several small flame portions, and a secondary air introduction groove is formed in the wide tooth profile with its introduction port at a position at least lower than the upper end of the main flame hole. At the same time, an inner flame hole is formed in this introduction groove.

Effect The present invention has the above-described configuration to form a small flame in a part of the main flame zone of a stove burner without a central air passage, and to place one end of the secondary air introduction groove in this part at least at a lower level than the upper end of the main flame hole. By providing an air passage to the closed space on the top surface of the burner cap formed by the main flame zone and the bottom of the pot, the main flame zone is separated and the air passage is formed by separating the main flame zone. By providing this in the secondary air introduction groove, stable formation of the inner flame is achieved.

EXAMPLE Hereinafter, an example of the present invention will be explained based on FIGS. 1 to 3.

Reference numeral 11 denotes a mixing section having a mixing pipe 12 and a burner head 13, and a burner cap 14 is placed on the burner head 13 to form a so-called stove burner structure 5. The stove burner of the present invention does not require a secondary air passage in the center, so the burner cap 14 also does not have a central air passage.

The upper surface 15 of this burner cap 14 has a gentle downward slope toward the periphery, and has a large number of toothed portions 16 on the outer peripheral edge of the upper surface 15, and a main flame hole 17 is formed between the toothed grooves and the upper surface of the burner head 13. is formed. The main flame hole 17 has a tooth profile with a wide width and a shallow height at a plurality of locations, and small gaps are created between the tooth profile and the upper surface of the burner head 13 to form small flame holes 18. .

Reference numeral 19 denotes a secondary air introduction groove, which is bored in the small flame hole 18 portion, and its inlet portion 19 is located at a lower level than the upper end of the main flame hole 17 to facilitate the inflow of secondary air. Reference numeral 20 denotes an inner flame hole provided in the secondary air introduction groove 19, and is arranged higher than the bottom surface of the introduction groove 19.

In the above configuration, fuel and premixed air are supplied to the mixing pipe 12 and mixed, and are then passed through the burner head 13 to the burner cap 14.
Main flame hole 17, its part 6=-.

It ejects and burns from the small flame part 18 and the inner flame hole 20.

Here, in the conventional burner without a central air passage, even if an inner flame hole is formed, if a pot is placed on the top, there is no flow of secondary air to the top surface of the burner cap, and the inner flame will not ignite. .

Therefore, in the present invention, with the above configuration, several places in the main flame zone are made into small flame sections, and these small flame sections form an air passage between the object to be heated such as a pot, and the burner cap 14 that forms the small flames. The secondary air introduction groove 19 provided in the toothed part 16 is provided at least at a lower level than the upper part of the main flame hole 17 to facilitate the introduction of secondary air. The exhaust flow of the main flame does not directly flow into the secondary air introduction groove 19, but the secondary air is effectively introduced into the base of the inner flame, and an inner flame is stably formed. Even though there is no air passage, an inner flame is formed and uniform heat distribution is achieved.

Effect of the Invention 7 l-7 As described above, according to the stove burner of the present invention, it is possible to create a stove burner that stably forms an inner flame hole even without a central air passage, and boiled boiled water does not fall to the bottom of the stove. It can be provided as a cooking device that eliminates the unevenness of heating distribution to the heated object, such as uneven boiling, caused by the lack of an inner flame, as in conventional methods, while obtaining the effects of this burner type without a central air passage (a type without a central air passage). It is something.

[Brief explanation of the drawing]

Figure 1 is a sectional view of a stove burner showing an embodiment of the present invention, Figure 2 is a plan view of the stove burner, Figure 3 is an enlarged view of the main parts of the stove burner, and Figure 4 is a conventional example. FIG. 5 is a cross-sectional view of a burner showing another conventional example. 12...Mixing tube, 13...Burner head, 14...Burner cap, 16...
・Tooth profile (part), 17...Main flame hole, 18...
...Small flame part (small flame hole part), 19...Secondary air introduction groove, 20...Inner flame hole. Name of agent: Patent attorney Toshio Nakao and one other person?
---Mixing tube Figure 2

Claims (1)

[Claims] It consists of a mixing tube without an air passage in the center, a burner head, and a burner cap that is placed on the burner head and has a main flame hole formed by a number of toothed grooves provided on the outer periphery. A small flame part is formed by making the width wide and shallow, and a secondary air introduction groove is formed in this wide toothed part, and this introduction groove opening is formed at least at a lower level than the upper part of the main flame hole, and A stove burner with an inner flame hole formed in the secondary air introduction groove.