JPS6321409A - Stove burner - Google Patents

Abstract

PURPOSE:To allow a stable and wide adjustment range by providing a pilot gas pipe separate from a main gas pipe and a flame sensor in the pilot flame hole, and by setting the ratio between the burning rate and the volume of the gas pipes in regard to the respective gases of the pilot flame and the main burning. CONSTITUTION:A cock 12 is connected to parallelly arranged two pipes of a main gas pipe 3 and a pilot gas pipe 4. If the ratio (x) between the burning rate of a pilot flame hole 17 and the sum of the volume of the pilot gas pipe 4 and a pilot passage 16 is made equal to or larger than the ratio (y) between the burning rate of a main flame hole 9 and the sum of the volume of the main gas pipe 3 and a equalizer chamber 10, the gas is delivered first from the pilot flame hole 17, and, upon igniting the gas from the main flame hole 9, the flame propagates to the pilot flame holes 17 without any trouble. By constructing in such a manner that even if the amount of gas to the main gas pipe 3 is changed by the cock 12, the amount of gas to the pilot gas pipe 4 does not change, a thermocouple 2 is stably heated, preventing a flame sensor 18 from being accidentally activated to shut off the gas. Therefore, the main flame can be throttled minimally, and the safety is ensured.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a stove burner used in homes, etc., which has an improved combustion amount adjustment range and combustibility.

BACKGROUND OF THE INVENTION Recently, flame blowout safety devices using thermocouples and electromagnetic valves have begun to be incorporated and used in gas stoves. As shown in Figure 6, this is a thermocouple safety valve that thermally detects the presence or absence of flame by placing a thermocouple 2 close to a part of the main flame hole 1 provided on the outer periphery of the stove burner, and opens and closes the gas circuit. It is electrically connected and has high safety against raw gas release.

Problems to be Solved by the Invention However, in the existing system, the range in which the flame opening can be used is determined by the stability of the flame in the main flame hole 1. In other words, stoves are generally used in a wide combustion range, and a standard one is 2200 to 4
It is actually used at about 00Kcal/H (115 to 1/6 aperture). However, when using a thermocouple safety valve, fIp
: To heat the couple to a temperature where the flame effectively maintains the magnetomotive force of the solenoid valve, for example, 2200 to 600 Kcal is required.
/H, the minimum amount of heat required for squeezing must be large. This is due to the fact that the length of the flame changes depending on the amount of combustion, and also because it is necessary to have a constriction combustion amount that can stably heat the thermocouple even with slight wind, dimensional variations, flame changes, etc. Therefore, many complaints have arisen that the convenience of conventional devices has been lost due to the addition of safety devices. Also, the minimum combustion amount seen from the cooking surface is 200Kc.
Al/H level is required, but there is currently no equipment that satisfies this requirement.

The present invention has been made to solve these conventional problems, and an object of the present invention is to provide a stove burner that has a safety device that has a stable wide throttle range and that improves the combustion performance of the burner.

Means for Solving the Problems The stove burner of the present invention has a burner cap with a large number of teeth removably attached to the top opening of the burner body, and a large number of burner caps on the outer periphery of the burner body and the teeth. The main flame hole and the pilot flame hole are integrated with the pilot gas supply pipe connected to the pilot flame passage, which is separate and independent from the pressure equalization chamber of the main gas supply pipe that is supplied to the main flame hole. A flame detection device is provided opposite to the pilot flame hole which is formed and a pilot flame gas supply pipe is desired, and the volume inside the pilot flame gas supply pipe and the pilot flame passage are determined relative to the amount of combustion in the pilot flame flame hole. A stove burner with a configuration where X≧y is provided, where X is the ratio of the total volume, and y is the ratio of the volume of the pressure equalizing chamber to the combustion amount in the main flame hole and the total volume in the main supply pipe. It is something.

Effect of the Invention The present invention has the above-described structure, in which the flame hole composed of the burner body and the burner cap communicates with the pressure equalization chamber that communicates with the main gas supply pipe, and the pilot flame passage is separate and independent from the main flame hole and the pressure equalization chamber. The pilot flame hole is connected to the pilot flame hole, and since the flame detection device is provided opposite to the pilot flame hole, even if the combustion amount supplied to the main gas supply pipe is changed, the pilot flame hole will remain connected to the pilot flame hole. Since the amount of combustion supplied to the engine does not change, the minimum amount of combustion can be made small.

If the combustion amount of the pilot flame at this time is set to about 150 Kcal/H and the combustion amount of the main flame hole is set to 2000 Kcal/H, the combustion amount adjustment range of the main flame hole is 2000~
It is 150Kcal/H. In addition, the ratio of the volume of the pressure equalization chamber and the volume of the main gas supply pipe to the amount of combustion in the main flame hole is the ratio of the volume in the pilot gas supply pipe and the volume of the pilot flame passage to the amount of combustion in the pilot flame hole. By making the ratio equal to or larger than the total sum ratio, the time required for the pilot gas supply pipe and the pilot fire passage to be replaced with the supplied gas is increased. The time required for replacement with the other gas is the same or shorter. Therefore, when the main flame hole is ignited by an igniter or the like and the flame formed in the main flame hole transfers to the gas ejected from the pilot flame hole, the gas ejected from the pilot flame hole remains steady. Therefore, combustion in the pilot flame hole is good.

Examples Below, examples of the present invention are shown in FIGS. 1, 2, 3, and 4.
This will be explained based on FIG.

A is a stove burner, which includes a burner body 5 having a main gas supply pipe 3 and a pilot gas supply pipe 4, and this burner body 5.
It consists of a burner cap 8 having a large number of teeth 7 which is removably attached to an opening in the upper surface 6 of the burner cap. The space formed by the teeth 7 and the upper surface 6 is a main flame hole 9, and the main flame hole 9 has an upstream side in a pressure equalizing chamber 10 that communicates with the main gas supply pipe 3 of the burner body 5. Reference numeral 11 denotes a main nozzle connected to the main gas supply pipe 3 and connected to a cock 12. The cock 12 has two gas supply passages inside, one for the main gas supply pipe 3 and the other for the pilot gas supply pipe 4. It has parallel passages. The pilot gas supply pipe 4 is integrally formed with the main gas supply pipe 3 on the burner body 5, and is connected to the cock 12 through a pilot nozzle/v13. Contact surface 1
4 and a contact surface 15 of the burner cap 8, and opens into a pilot passage 16 that is separate and independent from the pressure equalization chamber 10.

Reference numeral 17 denotes a pilot flame flame hole which has one end opened in the pilot flame passage 16, is divided by the contact surface 14, and uses a part of the teeth 7; Thermocouple 2 with flame detection device
and electrically connected to a safety valve built into the cock 12. 20 is a fixed part of the burner body 5, which is inserted into the fitting hole 22 with the holding rib 21, and the burner body 5 is fixed.
is fixed. The sum total of the internal volume of the pilot gas supply pipe 4 and the internal volume of the pilot fire passage 16 is configured to be smaller than the sum of the internal volume of the main gas supply pipe 3 and the internal volume of the pressure equalization chamber 10. 23 is an igniter provided corresponding to the main flame hole 9.

In the above configuration, the state at the time of ignition in the stove burner A is that the ignition is ejected from the main nozzle 11 and the pilot nozzle 13 into the main gas supply pipe 3 and the pilot gas supply pipe 4 at the same time as the operation of the cock 12 is started; The ejected gas is ejected from the main flame hole 9 and pilot flame hole 17, and the igniter 23 blows out the gas from the main flame hole 9 and the pilot flame hole 17.
Alternatively, combustion starts when the gas ejected from the pilot flame hole 17 is ignited. At this time, the state when gas starts to blow out to the main gas supply pipe 3 and the pilot gas supply pipe 4 is that on the main gas supply pipe 3 side, before the stove burner A is used, the main gas supply pipe 3 and Air exists in the pressure equalization chamber 10, and the main nozzle 11
The air in the main gas supply pipe 3 and pressure equalization chamber 1o is pushed out from the main flame hole 9 by the gas ejected from the main gas supply pipe 3 and the pressure equalization chamber 10, and the air inside the main gas supply pipe 3 and pressure equalization chamber 10 is replaced with gas. Gas is ejected starting from Exactly the same phenomenon occurs on the pilot gas supply pipe 4 side, and gas is ejected from the pilot flame hole 17 after the pilot gas supply pipe 4 and the pilot passage 16 are replaced with gas. In this way, the main flame hole 9 and the pilot flame hole 1
Combustion starts when gas is ejected from point 7. Therefore,
The time T1 from when the cock 12 is operated until the gas is ejected from the main flame hole 9 is determined by the amount of gas ejected from the main nozzle/1/11, the internal volume of the main gas supply pipe 3, and the content of the pressure equalization chamber 10. It depends on the sum of the products, and if the sum of the internal volumes is constant, the main nozzle μ
If the amount of gas ejected from m1 is increased, the time T becomes shorter. Similarly, the time T2 until gas is ejected from the pilot flame hole 17 is determined by the amount of gas jetted from the pilot flame nozzle/I/13, the internal volume of the pilot gas supply pipe 4, and the content of the pilot flame passage 16. It depends on the sum of the products.

Therefore, the ratio X of the sum of the internal volume of the pilot gas supply pipe 4 and the internal volume of the shelf fire passage "jg16" to the combustion amount in the pilot flame hole 17 is calculated as the main gas supply pipe 3 to the combustion amount in the main flame hole 9. When the ratio y of the internal volume of the internal volume of Gas is ejected from the hole 9. From the above, when the gas ejected from the main flame hole 9 is ignited at the time of ignition, the pilot flame hole 1 is ignited.
Since gas is always ejected from 7 or at the same time, the flame transfers from the main flame hole 9 to the pilot flame hole 17 without any problem.

On the other hand, when the gas ejected from the pilot flame hole 17 is ignited, the main gas supply pipe 3 and the pressure equalization chamber 10 are ignited from the main flame hole 9.
Since the inside is in the process of being replaced with gas, excess air and dilute gas is being ejected, so there is a problem that the combustion flame formed in the pilot flame hole 17 becomes an ignition source and causes backfire. X
It's when I'm at a loss.

In addition, when the amount of gas supplied to the main gas supply pipe a is throttled at the cock 12, the amount of gas combusted in the main flame hole 9 is reduced
In general, if the combustion amount at the main flame hole 9 is 2000 Kcal/H,
It can be reduced to about 0Kcal/H. On the other hand, by configuring the cock 12 so that even if the amount of gas supplied to the main gas supply pipe 3 changes, the amount of gas supplied to the pilot gas supply pipe 4 does not change, it is possible to Since the amount of gas combusted in the flame hole 17 does not change, stable heating of the thermocouple 2 is obtained and the thermocouple safety valve does not close and stop all gas supplied to the stove burner A. Therefore, the combustion amount range of the stove burner A is 2150 to 350 Kcal/h (150 Kcal/h when only the pilot flame hole 17 is burned) (this has the effect of providing a very wide adjustment range).

Effects of the Invention By using the stove burner of the present invention as described above, (1) In a burner in which a pilot gas supply pipe and a main gas supply pipe are integrated, the pilot fire gas supply pipe has a lower combustion rate than the combustion amount in the pilot flame hole. The ratio of the volume inside the gas supply pipe to the total volume of the pilot passage is
And when y is the ratio of the total volume of the main gas supply pipe and the volume of the pressure equalization chamber to the amount of combustion in the main flame hole, then X≧y
With this structure, when the main flame hole is ignited, steady gas is ejected from the pilot flame hole, so combustion in the pilot flame hole 9 continues normally without problems such as backfire. held.

(2) Since the flame detection device is provided opposite to the pilot flame hole, a stable electromotive force can be obtained at all times, and safety is ensured regardless of changes in the aperture.

(3) Furthermore, the drawing area is wide, and the amount of heat that satisfies the requirements can be provided with the minimum drawing area.

As described above in the explanation of the operation, the present invention provides a safe device that allows setting of a small minimum aperture υ amount without sacrificing the convenience of the conventional device.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a stove burner showing an embodiment of the present invention, FIG. 2 is a sectional view of the stove burner, FIG. 3 is a perspective view of the burner body of the stove burner, and FIG. 4 is a sectional view of the stove burner. 5 is a plan view of the burner body of the conventional stove burner, and FIG. 6 is a sectional view of the main part of the conventional stove burner. A... Stove burner, a... Main gas supply pipe, 4... Pilot gas supply pipe, 5... Burner body, 7... Teeth, 8... Burner cap, 9... Main flame hole, 10...
Pressure equalization chamber, 16...Pilot passage, 17...Pilot flame hole, 18...Flame detection device. Name of agent: Patent attorney Toshio Nakao and 1 other person18
- Fire, detection equipment No. 1, No. 4rI! i Figure 5 Figure 6!

Claims (1)

[Claims] A burner cap having a large number of teeth is removably attached to the upper opening of the burner body, and the burner body and the teeth form a large number of main flame holes and pilot flame holes on the outer periphery,
A pilot gas supply pipe that is connected to a pilot passage that is separate and independent from the pressure equalization chamber of the main gas supply pipe that is supplied to the main flame hole is integrally molded, and the pilot gas supply pipe is A flame detection device is provided opposite to the pilot flame hole, and x is the ratio of the sum of the volume in the pilot gas supply pipe and the volume of the pilot flame passage to the amount of combustion in the pilot flame hole. A stove burner having a configuration in which x≧y, where y is the ratio of the volume of the pressure equalizing chamber to the total volume of the main gas supply pipe to the amount of combustion in the main flame hole.