JPS61282717A - Cooking stove burner - Google Patents

Abstract

PURPOSE:To secure safety regardless of throttling and make the workability of the burner easy by providing the pilot flame gas supply tube with a flame detection device opposite to a desired flame hole channel outlet section in a cooking stove burner in which the pilot flame supply tube and the main gas supply tube are in one body. CONSTITUTION:The pilot flame hole channel 17 is separated independently from the flame hole channel 9 and made airtight. A flame detection device 19 provided opposite to the pilot flame hole channel 18 is connected to a thermocouple 2 and to a safety valve incorporated electrically in the cock 12. When the amount of fuel supplied to the main gas supply tube 3 is throttled at the cock 12, the amount of combustion in the flame hole channel 9 is throttled, but the amount of combustion at the pilot flame hole channel 18 does not change. Accordingly regardless of the throttling, the pilot flame can be held stabilized. Further when machining flat the pilot flame gas inlet face 24 and the main gas inlet face 25, the face 24 and the face 25 are placed on the same plane, so that they can be machined in one process by a lathe, etc., finishing the two surfaces simultaneously.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a stove burner used in homes and the like.

2. Prior Art Recently, flame blowout safety devices using thermocouples and electromagnetic valves have begun to be incorporated and used in gas stoves. As shown in Fig. 6, a thermocouple 2 is placed close to a part of the main flame hole 1 provided on the outer periphery of the stove burner to thermally detect the presence or absence of flame and close the gas circuit. It is highly safe against gas release.

Problems to be Solved by the Invention However, in the current system, the range in which the stove 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 2,200 to 40
It is actually used at about 0Kca6/H (1/6 to 1/6 aperture). However, when a thermocouple safety valve is used, in order for the flame to heat the thermocouple to a temperature that effectively maintains the magnetomotive force of the solenoid valve, the minimum amount of heat required for throttling must be large, for example, 2200 to 600 Kcal/H. This is due to the fact that the length of the flame changes depending on the amount of combustion, and that there is a need for a restricted combustion amount that allows stable thermocouple heating due to 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. In addition, there is a problem in that there is currently no device that satisfies the minimum restriction of about 200 Kcaff/H as viewed from the cooking side.

SUMMARY OF THE INVENTION The present invention has been made to solve these conventional problems, and aims to provide a stove burner that has a blowout safety device that has a stable wide constriction area and that facilitates the workability 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 attached to the upper opening of the burner body in a removable manner. A flame hole passage formed by the teeth and the upper surface of the burner body is connected to an auxiliary gas supply passage that is separate and independent from the main gas supply passage of the main gas supply pipe that is supplied to a large number of flame holes. A flame gas supply pipe is integrally molded, and a flame detection device is provided opposite the outlet of the flame hole passage where the pilot gas supply pipe is located, and the pilot gas inlet of the pilot gas supply pipe is installed. The main gas inlet surface of the main gas supply pipe is substantially flush with the main gas inlet surface of the main gas supply pipe.

Effects The present invention has the above-described configuration, and a main flame hole that communicates a flame hole constituted by a burner body and a burner cap with a main gas supply passage of a main gas supply pipe; It communicates with the auxiliary gas supply passage, which is separate and independent from the passage, and serves as a pilot flame hole for the pilot gas supply pipe.
Since the flame detection device is provided opposite to the pilot flame hole, even if the combustion amount supplied to the main gas supply passage is changed,
Since the amount of combustion supplied to the pilot flame hole is not changed, the minimum amount of combustion can be made small. The pilot flame combustion amount at this time is 150
Set it to about Kcal/H, and turn the main burner on the main flame hole to 200
If set to around Kcal/H, the minimum combustion amount is 1
50 Kcal! /H can be obtained. In addition, since the main gas inlet surfaces of the two main gas supply pipes and the pilot gas inlet surface of the pilot gas supply pipe were made approximately on the same plane, each main gas inlet surface and pilot gas inlet surface were machined. By cutting to obtain a smooth surface, each surface can be easily cut in one operation.

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 has a burner body 5 having a main gas supply pipe 3 and a pilot gas supply pipe 4, and a large number of teeth 7 removably attached to the upper surface 6 of this burner body 5. The space formed by the burner cap 8 and the teeth 7 and the upper surface 6 is used as a flame hole passage 9, with the upstream side opening inside the burner body 5, and the downstream side serving as the outlet of the flame hole passage 9, forming a flame hole 10. ing. Reference numeral 11 denotes a main nozzle connected to the main gas supply pipe 3, which is connected to a cock 12, and the cock 12 internally connects a gas supply passage to the main gas supply pipe 3 and a gas supply passage to the pilot flame gas supply pipe 4. It has two passages in parallel.

The pilot gas supply pipe 4 is integrally formed with the main gas supply pipe in the burner body 5, and is connected to the pilot nozzle 14 with a 6N,' cock 12, and the tip of the pilot gas supply pipe 4 is
It opens into a pilot flame passage 17 composed of the contact surface 15 of the burner body 5 and the contact surface 16 of the burner cap 80, and is defined as a pilot flame hole passage 18 separated by the contact surface 16 of the teeth 7 on the upstream side. is opened to the pilot flame passage 17 side, and the downstream side is opened to the pilot flame passage 18.
Take it as an exit. The pilot flame hole passage 17 is kept airtight and separated from the flame hole passage 9 at contact surfaces 15 and 16.

Reference numeral 19 denotes a flame detection device provided opposite to the pilot flame hole passage 18, and is connected to the thermocouple 2 and electrically 20 to a safety valve built into the cock 12.

Reference numeral 21 denotes a fixed part of the burner body 5, which is inserted into the fitting hole 23 of the holding rod 22. 1
The pilot gas supply pipe 4 and the main gas supply pipe 3 are integrally molded in parallel, and the pilot gas supply pipe 4 and the main gas supply pipe 3 are integrally molded in parallel. gas supply pipe 4
26 is the main gas inlet surface of the main gas supply pipe 3, and both inlet surfaces are machined to be substantially the same plane. Reference numeral 26 includes a pilot gas-filled pilot damper semi-fixed to the upper surface 24, and 27 a main damper semi-fixed to the main gas inlet surface 25.

In the above configuration, the main gas supply pipe 3 at the cock 12
When the amount of combustion supplied to the flame hole passage 9 is reduced, the amount of combustion in the flame hole passage 9 is reduced. The amount burned in the pilot flame hole passage 18 does not change. Therefore, the pilot flame can be held stably regardless of the aperture. Incidentally, a pilot flame with a pilot flame combustion amount of about k 150 Kcal/H can be produced, and from the appearance it is sufficient to change the amount of heat by using the other flame holes, leaving 1 to 3 of the conventional main flame holes. For example, if the pilot flame combustion #ff is set to 150 Kca#/H, the conventional burner will be 2150Kca6/H and 200
0 to 400K c a O/H adjustment rll is taken, and below this, the main combustion amount is set to zero, and the pilot flame combustion amount is 150 Kc.
Available in a l/H only.

The pilot gas inlet surface 24 and the main gas inlet surface 25 of the stove burner A are semi-fixed in close contact with the pilot damper 26 and the main damper 27, respectively. This is because each damper regulates the amount of air sucked into each gas supply pipe by area, so if a gap is created between the dampers, the amount of air changes and poor combustion occurs. Therefore, after the stove burner A is integrally formed by casting, the pilot gas inlet surface 24 and the main gas inlet surface 25 are machined to obtain smooth surfaces. By making the surfaces 25 the same plane, the work can be completed in one machining process using a lathe or the like, so that the machining of the two surfaces can be completed at once.

In addition, when boiling over occurs during use, when stove burner A is removed, cleaned, and reinstalled, the three supporting parts of stove burner A are fitted together with almost no wobbling, so the main gas supply It is easy to work if the tube 3 and the main nozzle 11 are fitted at two points, and the surface part 21 and the fitting hole 23, but the work is difficult because it is a three-point fit. If the gas supply pipe 3 and the pilot gas supply pipe 4 are made parallel and the main nozzle (vll) and the pilot nozzle (v14) are fitted together at the same time, the three-point fitting is actually two-point fitting. Therefore, if the pilot gas inlet surface 24 and the main gas inlet surface 25 are machined approximately perpendicular to the 3-axis direction of the pilot gas supply pipe 4 and the main gas supply pipe, respectively,
This has the effect of making it easier to fit each part together.

Effects of the Invention By using the stove burner of the present invention as described above, (1) In a stove burner that integrates the pilot gas supply pipe and the main gas supply pipe, the flame detection device can be connected to the pilot gas supply pipe. Since it is provided opposite to the desired outlet of the flame hole passage, a stable electromotive force can be obtained at all times, and safety is ensured regardless of changes in the aperture.

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

(3) Since the pilot gas inlet surface and the main gas inlet surface are integrally molded on substantially the same plane, the product can be obtained in one processing step.

As mentioned in the explanation of the operation, it provides a safe and low processing cost that allows setting of a small minimum drawing amount without losing the convenience of the conventional method.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a cooking stove burner showing an embodiment of the present invention, Fig. 2 is a sectional view of the cooking stove burner, Fig. 3 is a perspective view of the body of the cooking stove burner, and Fig. 4 is a sectional view of the cooking stove burner. FIG. 5 is a plan view of the cap, FIG. 5 is a plan view of the body of the stove burner, and FIG. 6 is a sectional view of the main part of the conventional stove burner. 3... Main gas supply pipe, 4... Pilot gas supply pipe, 5... Burner body, 6...
・Top surface of burner body, 7...teeth, 8...
... Burner cap, 9 ... Flame hole passage, 19.
... Flame detection device, 24 ... Pilot gas inlet surface, 25 ... Main gas man υ mouth surface, A ...
... Conlovana. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure 4 Figure 3 , 6 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 a large number of flame holes are formed on the outer periphery of the burner body and the burner cap. A pilot gas supply pipe connected to an auxiliary gas supply passage that is separate and independent from the main gas supply passage of the main gas supply pipes that are supplied to the plurality of flame holes is integrated into the flame hole passage formed on the upper surface. A flame detection device is provided opposite the outlet of the flame hole passage where the pilot gas supply pipe is formed, and the pilot gas inlet face of the pilot gas supply pipe and the main gas supply pipe are connected to each other. A stove burner whose main gas inlet surface is approximately on the same plane.