JPH06185707A - Burner for movable cooking stove - Google Patents

Abstract

PURPOSE:To recognize a misset of a burner cap at a glance by providing positioning means each having a cutout and a protrusion at a burner body and the cap, and specifying a distance of the protrusions and shapes of the protrusions at a lower end face. CONSTITUTION:A burner cap 3 is set to a burner body 2 of a burner 1. A central burner port burner 5 protrudes above a leg 32 of the cap 3. Further, positioning means 7 each having a output 71 and a protrusion 72 are so arranged at the body 2 and the cap 3 as to accurately dispose a set positions of an ignition electrode S and a ground electrode 30. In this case, a distance L from a center of the cap 3 to a central end 74 of the end 73 of the protrusion 72 is set shorter than a distance M from a center of a burner head 21 to innermost parts of recesses 25, 26. A lower end face 73 of the protrusion 72 and an upper surface 4a of an outer peripheral edge of the body 2 are set to an inverted conical surface of the same inclination corresponding to one another.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to positioning means for a burner body and a burner head in a stove burner having a burner head mounted on the burner body.

[0002]

2. Description of the Related Art A gas burner (stove burner) used for a stove or the like has a top end opening, a burner body having an annular or cylindrical head and an umbrella part, and the bottom end thereof has the top end opening. And a burner cap around which a row of radial projections that abuts on the upper surface of the outer peripheral edge of the burner cap. The burner cap is coaxially placed on the head of the burner body to close the upper end opening, and forms a peripheral flame port array by the groove between the protrusions. Further, in order to increase the flame density and improve the heating efficiency while inclining the outer peripheral flame port upward and obliquely forming the flame, the outer peripheral upper surface surrounding the upper end opening and the outer peripheral upper surface are contacted. A stove burner in which the lower end surface of the row of protrusions has an inverted conical surface has been put into practical use.

A radial recess is provided on the outer peripheral side wall of the burner body, and the recess is covered with a part of the burner cap, and the ignition electrode of the ignition device, a thermocouple as a misfire sensor, and the like are provided. It is installed. As a result, the ignition electrode and the like are prevented from adhering broth or the like falling from the food placed above. The ignition electrode forms a spark discharge gap between the ignition electrode and the ground electrode protruding from the lower surface of the umbrella portion of the burner cap, and a dedicated row of protrusions corresponding to the recessed portion is formed on the lower surface of the burner cap. Therefore, it is necessary to accurately set the position of the burner head with respect to the burner body. For this reason, the notch formed on the outer peripheral edge of the upper opening of the burner body and the lower surface of the burner cap are projected,
Positioning means is provided which comprises a protrusion that engages with the notch.

[0004]

In the conventional stove burner, the projection provided on the lower surface of the burner cap, which is the positioning means of the burner head, has a cylindrical shape or a prismatic shape, and the end on the center side of the projection has a burner body. Was formed on the outer side of the innermost part of the recess provided on the outer peripheral side wall. Therefore, when the user sets the burner cap on the burner body, even if the protrusion enters the recess or the center side end of the protrusion is formed inside the deepest part of the recess, the outside of the burner body Since the upper surface of the peripheral edge is an inverted conical surface, if the outer peripheral side end of the protrusion abuts on the edge of the recess that is lower than the height at which the outer peripheral edge of the protrusion abuts on the outer peripheral edge upper surface,
Since it falls down for the time being, it is recognized as if it was set correctly at first glance. As a result, the user may misunderstand that the burner cap has been set to the normal position, and may perform the ignition operation of the stove burner, and a normal outer peripheral flame row is not formed,
Due to the formation of abnormal flames, it was mistaken for a failure and there was a safety problem. An object of the present invention is to provide a stove burner provided with a positioning means capable of reliably preventing an error in the setting position when setting the burner cap in a burner body having a recess for mounting an ignition electrode or the like on the outer peripheral side wall. It is in.

[0005]

A stove burner according to the present invention has a hollow burner body having a head portion having an upper surface opening and a recess formed in an outer peripheral side wall, and a lower surface and an outer peripheral surface. Correspondingly, a row of protrusions is provided around the head of the burner body, concentrically mounted on the head, and a burner cap that closes the upper surface opening and forms an outer peripheral flame row, and A stove burner provided with a notch formed in the outer peripheral edge of the upper surface opening of the burner body and a projection means protruding from the lower surface of the burner cap and engaging with the notch. The upper surface of the outer peripheral edge of the upper surface opening has an inverted conical surface shape, the projection row of the burner cap has a lower end surface inclined in an inverted conical surface shape corresponding to the upper surface of the outer peripheral edge, and the projection is flat in the radial direction. With
The lower end surface is set in the shape of an inverted conical surface having substantially the same slope corresponding to the upper surface of the outer peripheral edge, and the distance from the center of the head of the burner body to the innermost part of the recess is set from the center of the burner cap. It is characterized in that it is set to be larger than the distance to the center side end of the tip of the projection.

[0006]

In the stove burner of the present invention, the burner cap drops downward and can be stably installed on the burner body only when the positioning means is positively engaged. In other cases, the burner cap is It rises from the burner body and becomes unstable. Therefore, the user can recognize the erroneous setting of the burner cap at a glance and accurately recognize it. As a result, it is possible to prevent misunderstanding that a failure has occurred and to improve safety.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described based on the embodiments shown in FIGS. The stove burner of the present invention is a burner body 1
And an ignition electrode S for ignition and a thermocouple T for detecting misfire attached to the burner body 1. The burner body 1 is formed by setting (mounting) the burner cap 3 on the burner body 2.

The burner body 2 has an annular head portion 21,
It comprises a body portion 22 extending downward from a part of the head portion 21 and further extending laterally. An open annular upper surface opening 24 having a missing portion 23 is formed on the upper surface of the head portion 21. The upper surface of the outer peripheral edge 4 surrounding the upper surface opening 24 is an outer peripheral edge upper surface 4a having an inverted conical surface shape. The head 21 has an annular shape as in this embodiment because a large stove burner is provided with a central flame port to be described later, but the small burner has a disk shape. On the outer peripheral side of the missing portion 23 of the head portion 21, recesses 25 and 26 having a shape in which the head portion 21 is cut out in the vertical direction are continuously provided.

The burner cap 3 is placed on the head portion 21 of the burner body 2, and has a ring-shaped umbrella portion 31 that covers the upper end opening 24 and covers the recesses 25 and 26 above.
And a cylindrical leg portion 32 protruding downward from the center of the umbrella portion 31 and fitted into the inner circumference of the annular head portion 21. The lower surface of the umbrella portion 31 has a predetermined width in the radial direction from the inner side of 3 mm from the outer peripheral edge and has an annular raised portion 33 on the same circumference.
And the outer peripheral edge 4 of the recesses 25, 26 of the burner body 2
The raised portion 3 having a predetermined width in the radial direction from the position along the
4, 35 are continuously formed. Of the umbrella portion 31,
A small protrusion-shaped ground electrode 30 for ignition is projected on the lower surface of the recess 25.

An annular raised portion 33 and a depressed raised portion 34,
On the lower end surface of 35, ridges 36 that are inclined in an inverted conical shape and are arranged in the radial direction are arranged at equal intervals. The lower end surface of the ridge 36 is an inverted conical surface corresponding to the inverted conical surface of the outer peripheral edge upper surface 4a, and is in contact with the outer peripheral edge upper surface 4a and also contacts the upper surface 41 of the missing portion 23 and is small. The outer peripheral flame nozzle row 10 including the flame nozzles 37 and the large flame nozzles 38 is formed. The flame ports 37 and 38 are functionally the outer peripheral flame port array for heating, which is an open annular shape on the outer periphery of the umbrella portion 31, the ignition flame port that faces the recess 25, and the misfire detection that faces the recess 26. It is classified as a flame mouth.

In this embodiment, a central flame burner 5 having a small diameter is provided above the leg portion 32 of the burner cap 3.
The inside of the burner body 2 is a mixed gas chamber of fuel gas and primary air for combustion, and a tip 11 of the body 22 is provided with a fuel gas injection nozzle and a primary air supply port (neither is shown). Has been. When the stove burner is used, the fuel gas injected from the injection nozzle sucks the primary air from the primary air supply port, becomes a mixture, is supplied to the head portion 21, and is blown out from the flame ports 37 and 38. Part of the air-fuel mixture is supplied to the central flame burner 5. An ignition electrode S is fastened to the recess 25, and a thermocouple T is fastened to the recess 26 by a fastening mechanism 6.

The burner body 2 and the burner cap 3 are provided on the burner body 2 and the burner cap 3 in order to accurately set the ignition electrode S and the ground electrode 30, and the recesses 25 and 26 and the recessed protrusions 34 and 35.
Positioning means 7 is provided in order to accurately correspond to and. The positioning means 7 is a U-shaped notch 71 formed in the outer peripheral edge 4 of the upper opening 24 of the burner body 2.
And a protrusion 7 that is provided on the lower surface of the burner cap 3 and has an oblong cross section that is flat in the radial direction and that engages with the notch 71.
It consists of 2. The notch 71 is formed at a position rotated 180 degrees with the recess 25, and the protrusion 72 is formed on the ground electrode 30.
It is provided at a position rotated by 180 degrees.

The positioning means 7 is provided with recesses 25, 2 on the outer peripheral side wall of the head portion 21 of the burner body 2 like the above stove burner.
6 is present, the protrusion 7 provided on the burner cap 3
When the center-side end 74 of the tip surface 73 of 2 is outside the innermost portions of the recesses 25 and 26, even when the burner cap 3 is set on the burner body 2 at a position rotated 180 degrees from the normal position, The burner cap 3 falls down and is set. Also, the center side end 74 of the protrusion 72
Although the outer peripheral edge upper surface 4a of the burner body 2 is an inverted conical surface, the outer peripheral side end of the protrusion 72 other than the recesses 25 and 26 is formed even when the recesses 25 and 26 are formed on the inner side of the innermost part. When the ridge 72 comes into contact with the innermost edge of the recesses 25 and 26, which is lower than the height with which it comes into contact with the outer peripheral edge upper surface 4a, it falls downward by the difference in height. . For this reason, the user misunderstands that the burner cap 3 has been set properly, and it is difficult for the user to notice that the burner cap 3 is set in the opposite way. As a result, the ignition operation is performed, which may be mistaken for a failure, or abnormal combustion may occur.

In the present invention, as shown in FIG. 4, the end 7 on the center side of the tip surface 73 of the projection 72 is located from the center of the burner cap 3.
4 is set to be smaller than the distance M from the center of the burner head 21 to the innermost portions of the recesses 25 and 26, and the lower end surface 73 of the protrusion 72 and the outer peripheral wall upper surface 4 are set.
The reverse conical surface of a is set to be substantially the same as the reverse conical surface. As a result, as shown in FIG. 5, when the burner cap 3 is set at a position rotated by 180 degrees from the normal position, the projection 72 of the burner cap 3 has the recesses 25, 2 of the burner body 2.
It will be in a floating state without dropping into the inside of 6 and the height of the edges of the recesses 25, 26. As a result, the user can surely recognize that the burner cap 3 is not properly set. Further, the burner cap 3 has the positioning means 7
If the burner cap 3 is not in the engaging position, the burner cap 3 does not fall into the burner body 2 and is in a floating state as described above, so that it is immediately understood that the burner cap 3 is not properly set.

Since the projection 72 has an elliptical cross section that is flat in the radial direction, there is an advantage that it is possible to reduce the degree of obstruction when forming the outer peripheral flame port array 10. Also, the protrusion 72
The lower end surface 73 of the outer peripheral wall 4a is an inclined surface that projects in the radial direction according to the inclination of the outer peripheral wall upper surface 4a. When the burner cap 3 is installed on, the aptitude can be set smoothly. The notch 71 is not limited to being formed at a position rotated by 180 ° with respect to the recess 25, but the angle may be any number as long as it is not the same position. At this time, the protrusion 7
The relationship between 2 and the ground electrode 30 is an angle corresponding to the above.

[Brief description of drawings]

FIG. 1 is an assembled perspective view of a stove burner of the present invention.

FIG. 2 is a perspective view of a stove burner of the present invention.

FIG. 3 is a plan view of a burner body of the stove burner of the present invention.

FIG. 4 is a sectional view of a stove burner of the present invention.

FIG. 5 is a cross-sectional view of the stove burner in a state where the burner caps are misassembled.

[Explanation of symbols]

 1 burner body 2 burner body 3 burner cap 4 outer peripheral edge 7 positioning means 21 burner body head 22 burner body trunk 24 burner body upper end opening 25, 26 recess 36 protrusion 4a outer peripheral upper surface 71 notch 72 protrusion S Ignition electrode T Thermocouple

Claims (1)

[Claims] 1. A hollow burner body having a head having an opening on the upper surface and a recess formed on the outer peripheral side wall, and a row of protrusions on the lower surface corresponding to the outer peripheral surface. ,
A burner cap that is concentrically placed on the head of the burner body and that closes the upper surface opening and forms an outer peripheral flame port array; and a notch formed in the outer peripheral edge of the upper surface opening of the burner body. And a hob burner provided with a positioning means that is provided so as to project from the lower surface of the burner cap, and a projection that engages with the notch, wherein the outer peripheral upper surface of the upper opening of the burner body has an inverted conical surface shape. The lower end surface of the ridge row of the burner cap inclines in an inverted conical surface shape corresponding to the upper surface of the outer peripheral edge, the projection is flat in the radial direction, and the lower end surface corresponds to the upper surface of the outer peripheral edge. Set in the shape of an inverted conical surface of substantially the same inclination, the distance from the center of the head of the burner body to the innermost portion of the recess, from the center of the burner cap to the center side end of the tip of the protrusion. Greater than distance Stove burner, characterized in that the Ku set.