JP6041822B2 - Stove burner - Google Patents

Description

  The present invention relates to a burner for a stove used for a gas stove.

  This type of stove burner includes a mixing tube that supplies a mixed gas of fuel gas and primary air, a burner body that is connected to the mixing tube, and a large number of burners mounted on the burner body along the outer periphery. An annular burner head forming a flame hole and an ignition plug for igniting the flame hole are provided.

  In this type of stove burner, the ignition plug is accommodated in a part of the burner body, the electrode of the ignition plug protrudes in the vicinity of the outer peripheral wall of the burner head, and the flange facing the upper portion of the electrode is used as the burner head. What is provided is known (see Patent Document 1 below). In this case, a discharge target for forming a spark discharge for ignition between the electrode of the spark plug protrudes from the back surface of the flange provided in the burner head.

JP-A-7-269856

  In the above conventional one, when a large amount of boiled spilled juice flows down on the burner head, the boiled spilled juice wraps around the back side of the rice cake and adheres to the discharge target. In addition, the simmered juice that wraps around the back side of the bowl may flow further back and adhere to the ignition flame hole, or may drip onto the ignition plug. If the simmered juice adheres to the spark plug or the ignition flame hole, there is a disadvantage that the ignition plug is poorly discharged or the ignition flame hole is clogged, so that good ignition cannot be performed.

  In view of the above points, an object of the present invention is to provide a stove burner that can be ignited satisfactorily without adverse effects caused by the simmered juice.

In order to achieve such an object, the present invention provides a mixing tube for generating a mixed gas of fuel gas and primary air, a burner body connected to the mixing tube, and an outer periphery mounted on the burner body. A stove burner comprising a burner head that forms a number of flame holes along an end thereof, and a spark plug for igniting the flame hole, wherein the burner head includes an ignition flame hole that is ignited by the spark plug; A projecting portion projecting radially outward from the outer peripheral surface of the burner head corresponding to the ignition flame hole, the projecting portion from an upper wall and both circumferential edges of the burner head on the upper wall in the circumferential direction A pair of side hanging walls extending downward; and a front hanging wall extending downward from a leading edge of the upper wall continuously extending from both side hanging walls, the lower edge of the front hanging wall and the side hanging wall The lower edge of the wall is more than the ignition flame hole Characterized in that located towards.

  According to the present invention, the upper wall of the overhanging portion covers the upper side of the ignition plug, and the lateral hanging wall and the front hanging wall of the overhanging portion surround the outside of the ignition plug. According to this, even if boiled spilled juice flows down on the overhanging portion, the side hanging wall and the front hanging wall prevent the boiled spilled juice from wrapping around the lower surface of the upper wall. Thereby, adhesion of the simmered juice to the ignition plug and the ignition flame hole can be prevented, and good ignition can be performed.

Further, in the present invention, a discharge target that protrudes downward corresponding to the position of the spark plug is provided inside the overhang portion, and the lower edge of the front drooping wall and the side droop wall of the overhang portion are provided. lower edge is characterized in that located above the lower end of the front Symbol position or the discharge target of the lower end of the same level as the discharge target.

  The overhanging portion is surrounded by a lateral hanging wall and a front hanging wall in the upper space inside. For this reason, there is little air flow in the space around the ignition flame hole and the discharge target. If ignition discharge is performed by the spark plug in this state, fresh combustion air is not sufficiently supplied around the ignition flame hole and the discharge target, which may cause ignition failure.

  Therefore, the present invention is such that the position of the lower edge of the front drooping wall and the lower edge of the side drooping wall is lower than the ignition flame hole and at the same level as the lower end of the discharge target or the lower end of the discharge target. The lower edge of the front drooping wall and the side drooping wall are formed so as to be in a higher position. According to this, since it is possible to reliably prevent the simmered juice from adhering to the ignition flame hole and perform discharge for ignition by the spark plug at a position where fresh combustion air is sufficiently supplied, Can be prevented.

The side view which shows the burner for stove of embodiment of this invention. The principal part sectional drawing of the burner for stove of this embodiment. The perspective view which shows the spacer in this embodiment. The perspective view which shows the bottom face of the burner head in this embodiment. The front view of the overhang | projection part in this embodiment.

  An embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the stove burner of the present embodiment includes a mixing tube 1, a burner body 2, a burner head 3, and a burner cap 4.

  The mixing tube 1 generates a mixed gas of the fuel gas and the primary air by taking in the fuel gas ejected from a gas nozzle (not shown) together with the primary air.

  As shown in FIG. 2, a burner body 2 is connected to the downstream end of the mixing tube 1. The burner body 2 includes a base portion 5 formed of a metal plate material and a spacer 6 formed of die casting. A spark plug 7 is provided inside the spacer 6.

  The base portion 5 of the burner body 2 includes an outer cylinder 8 and an inner cylinder 9 provided inside the outer cylinder 8, and an annular space formed between the outer cylinder 8 and the inner cylinder 9 is a mixing tube. 1 is formed.

  As shown in FIG. 2, the outer cylinder 8 of the base portion 5 is provided eccentrically in a direction in which the side on which the spark plug 7 is disposed approaches the inner cylinder 9. The base portion 5 is formed with an annular bottom raised portion 11. The lower end of the inner cylinder 9 is connected to the upper end of the bottom raised portion 11.

  As shown in FIGS. 2 and 3, the spacer 6 is connected to the base portion 5 in a state where the upper end of the outer cylinder 8 is inserted into a connecting portion 13 which is a communication opening formed in the bottom portion 12. The spacer 6 includes an annular placement portion 14 on which the burner head 3 is placed on the upper end surface.

  As shown in FIG. 1, the spacer 6 is exposed from the top plate 15 that closes the upper surface of the stove body (not shown). A burner opening 16 is formed in the top plate 15, and an annular closing plate 17 that closes a gap formed between the burner opening 16 and the spacer 6 is provided. In addition, the virtues 18 are placed on the top plate 15 on the outer periphery of the closing plate 17.

  Since the spacer 6 is formed by die casting, it is suitable for exposing from the top plate 15 because of its high aesthetics and high deformation strength.

  As shown in FIGS. 2 and 3, a spark plug housing portion 20 for housing the spark plug 7 is provided inside the outer peripheral wall 19 of the spacer 6. The spark plug housing portion 20 is a vertically long space formed along the inner surface of the outer peripheral wall 19 of the spacer 6, and the upper end thereof is opened so as to cross a part of the mounting portion 14. This opening is a plug opening 26 described later.

  As shown in FIG. 3, the spark plug 7 is housed inside the spark plug housing portion 20 in such a posture that the electrode side at the upper end thereof is inclined toward the back side of the spark plug housing portion 20. Thereby, even if the length dimension from the upper end to the lower end of the spark plug 7 is relatively large, the spark plug 7 can be accommodated inside the spark plug accommodating portion 20 while suppressing the dimension in the height direction. 7 can be stored at a position lower than the upper edge of the spark plug housing portion 20.

  As shown in FIG. 2, the spark plug housing portion 20 is provided in a relatively wide space formed by decentering the outer cylinder 8 of the base portion 5 with respect to the inner cylinder 9. The spark plug 7 is attached to the spacer 6 by being screwed to a support piece 21 extending downward from a part of the outer peripheral wall 19 of the spacer 6.

  In the present embodiment, as shown in FIG. 3, a thermocouple 22 is incorporated at a position adjacent to the spark plug housing portion 20 of the spacer 6. The thermocouple 22 is supported by the spacer 6 via a support member 23 that is partially shown in FIG.

  As shown in FIGS. 2 and 3, the spark plug housing portion 20 includes a pair of vertical wall portions 24 facing each other at a predetermined interval in the circumferential direction of the mounting portion 14, and the back side of both vertical wall portions 24. And a back wall 25 that is continuous with the plug, and at its upper end, a plug opening 26 that opens above the spark plug 7 is formed. Further, a flat surface 27 is formed at the upper end of the back wall portion 25 located on the back side of the plug opening 26, and the upper surface of the spacer 6 is located outside the plug opening 26 (outside in the radial direction of the spacer 6). A protruding line 28 is provided that protrudes upward from the plug and is curved along the outer peripheral edge of the plug opening 26.

  Since the spark plug 7 is accommodated in the spark plug accommodating portion 20, even when the burner head 3 is removed during cleaning or the like as shown in FIG. It does not protrude from the plug opening 26. Thereby, it does not accidentally contact the spark plug 7 at the time of cleaning or the like, and the damage of the electrode of the spark plug 7 can be surely prevented.

  Further, the ridges 28 formed along the outer peripheral edge of the plug opening 26 of the spark plug housing portion 20 block the squeezed juice that has flowed to the outside of the placement portion 14 of the spacer 6. Thereby, it is difficult for the boiled juice to flow into the spark plug housing 20.

  As shown in FIG. 4, the burner head 3 is formed in an annular shape, and includes an annular wall 29 that is suspended from the outer periphery of the lower surface thereof. A large and small number of grooves are formed in the annular wall 29, and the large and small numbers are formed along the outer periphery of the burner head 3 when these grooves contact the mounting portion 14 of the spacer 6 as shown in FIG. 2. The cooking flame hole 30 is formed. The cooking flame holes 30 having different shapes and sizes are provided in an arrangement suitable for flame formation.

  A drooping cylinder 31 concentric with the annular wall 29 is provided on the inner periphery of the burner head 3. As shown in FIG. 2, the hanging cylinder 31 is inserted into the inner cylinder 9 of the base portion 5 of the burner body 2 when the burner head 3 is placed on the placement portion 14 of the spacer 6. At this time, the drooping cylinder 31 and the inner cylinder 9 form a hollow portion 32 that vertically penetrates the central portion of the burner body 2 and the burner head 3. In the hollow portion 32, a pan bottom temperature sensor 33 is provided. An annular burner cap 4 is provided on the upper part of the burner head 3 to prevent foreign matter from entering the hollow portion 32.

  An annular space formed between the hanging cylinder 31 of the burner head 3 and the inner surface of the spacer 6 constitutes a distribution chamber 34 communicating with the mixed gas passage 10. The mixed gas that has entered the distribution chamber 34 from the mixing tube 1 through the mixed gas passage 10 is distributed in the circumferential direction of the burner head 3 and is ejected from the cooking flame hole 30.

  Further, the burner head 3 is formed with an ignition part 35 that covers the upper side of the ignition plug 7 accommodated in the ignition plug accommodation part 20. Furthermore, the burner head 3 is formed with an overhang portion 36 that continuously extends from the ignition portion 35 and extends radially outward of the burner head 3. The ignition plug 35 and the overhanging portion 36 cover the upper portion of the spark plug housing portion 20. By providing the overhang portion 36 on the burner head 3, the burner cap 4 only needs to be formed in a circular shape, and the care and appearance are good.

  As shown in FIGS. 2 and 4, the ignition unit 35 has a contact surface 37 that contacts a flat surface 27 formed on the upper surface of the rear wall portion 25 of the spark plug housing portion 20 on the back surface, and a contact surface 37. And a pair of side wall portions 38 that extend downward from both sides. Further, the both side wall portions 38 of the igniter 35 are continuous from the hanging cylinder 31 at the back end edge, and a part of the hanging cylinder 31 located between the both side walls 38 is the rear wall of the igniting section 35. Part 39 is designated.

  When the burner head 3 is mounted on the mounting portion 14 of the spacer 6, the both side wall portions 38 of the ignition portion 35 abut on the outer sides of both vertical wall portions 24 of the spark plug housing portion 20, respectively. The rear wall 39 of the 35 faces the back wall 25 of the spark plug housing 20 with a gap. Further, the contact surface 37 of the igniter 35 is formed with a plurality of grooves serving as the ignition flame hole 40 and a discharge target 41 with a protrusion protruding downward. The ignition flame hole 40 is formed by a groove in the contact surface 37 when the contact surface 37 contacts the flat surface 27 of the spark plug housing 20. At this time, the discharge target 41 is located at a distance where the discharge from the electrode of the spark plug 7 accommodated in the spark plug accommodating portion 20 is favorably generated.

  The gap between the rear wall portion 39 of the ignition portion 35 and the rear wall portion 25 of the spark plug housing portion 20 is communicated with the distribution chamber 34 on the lower side and with the ignition flame hole 40 on the upper side. An ignition gas guide path 42 is formed. As a result, the mixed gas in the distribution chamber is supplied to the ignition flame hole 40 through the ignition gas guide path 42.

  As described above, the spark plug 7 is housed inside the spark plug housing portion 20 so that the upper electrode side is inclined toward the back side of the spark plug housing portion 20, whereby the electrode of the spark plug 7 is placed in the ignition flame hole. Since it is close to 40, it is possible to prevent ignition failure from occurring and ignite smoothly.

  The overhang portion 36 includes an upper wall 43 facing the upper side of the spark plug housing portion 20, a pair of side hanging walls 44 extending downward from both circumferential edges of the burner head 3 on the upper wall 43, and both side hanging walls A front hanging wall 45 extending downward from the leading edge of the upper wall 43 in the protruding direction. Thereby, the ignition plug 35 and the spark plug housing 20 are covered.

  Further, as shown in FIG. 2, the lower edge of the front hanging wall 45 and the lower edge of the side hanging wall 44 of the overhanging portion 36 are located below the ignition flame hole 40 and as shown in FIG. And located above the lower end of the discharge target 41.

  As shown in FIGS. 2 and 5, the overhang portion 36 is provided in the burner head 3 so as to cover the upper portion thereof at a position close to the spark plug 7 and the spark plug housing portion 20. Moreover, the side hanging wall 44 and the front hanging wall 45 of the overhang portion 36 cover the upper part of the ignition unit 35 from the outside. Thereby, the penetration | invasion of the simmered juice into the inside of the ignition part 35 and the inside of the ignition plug accommodating part 20 is prevented.

  In addition, in the present embodiment, the electrode of the spark plug 7 is farthest from the overhanging portion 36 because the spark plug 7 is in a posture in which the electrode side at the upper end is inclined to the back side of the spark plug housing portion 20. Is located. Thus, even if the boiled spilled juice that has flowed down in the vicinity of the overhanging portion 36 enters the lower portion of the overhanging portion 36, it can be prevented that the spilled boiled spilled juice reaches the electrode of the spark plug 7. .

  Further, the lower edge of the front hanging wall 45 and the lower edge of the side hanging wall 44 are positioned below the ignition flame hole 40 and above the lower end of the discharge target 41, so that the ignition plug The ignition flame hole 40 is smoothly ignited by spark discharge between the electrode 7 and the discharge target 41.

  That is, the outer upper side inside the ignition part 35 is surrounded by the side hanging wall 44 and the front hanging wall 45 of the overhang part 36. For this reason, the air permeability of the space from the upper part of the overhanging part 36 to the upper part of the ignition part 35 is low. If discharge is performed by the spark plug 7 in this state, supply of fresh combustion air around the ignition flame hole 40 and the discharge target 41 may be delayed, resulting in ignition failure.

  On the other hand, in the present embodiment, the position of the lower edge of the front hanging wall 45 and the lower edge of the side hanging wall 44 is above the lower end of the discharge target 41, so that fresh combustion air is sufficient. The discharge for ignition by the spark plug can be performed at the position supplied to the battery. In addition, since the ignition flame hole 40 is located on the far upper side from the lower edge of the front hanging wall 45 and the lower edge of the side hanging wall 44, it is possible to reliably prevent the spilled juice from adhering to the ignition flame hole 40. Therefore, it is possible to reliably ignite by preventing the occurrence of ignition failure.

  In the present embodiment, as a configuration in which the ignition flame hole 40 is smoothly ignited by spark discharge between the electrode of the spark plug 7 and the discharge target 41, the overhanging portion 36 is suspended forward. Although the lower edge of the wall 45 and the lower edge of the laterally hanging wall 44 are positioned below the ignition flame hole 40 and above the lower end of the discharge target 41, other than this, Although not shown, the lower edge of the front hanging wall 45 and the lower edge of the side hanging wall 44 of the overhang portion 36 are located below the ignition flame hole 40 and at the same level as the lower end of the discharge target 41. Even if it is located, the same effect can be obtained.

  In the present embodiment, the ignition plug 7 is accommodated in the ignition plug accommodating portion 20 formed in the spacer 6 of the burner body 2, and the ignition portion 35 of the burner head 3 covers the upper side of the ignition plug 7. Although an example in which the projecting portion 36 projecting outward from the ignition unit 35 of the head 3 is shown, the present invention is not limited to this. For example, although not shown, in the case of a stove burner having a configuration in which the ignition plug's point pole protrudes outside the burner head, the overhanging portion protruding from the burner head covers the upper portion of the ignition plug, and this overhanging portion It is also possible to provide a discharge target. In this case as well, as in the configuration of the present embodiment, the overhanging portion can prevent the simmered juice from adhering to the spark plug.

DESCRIPTION OF SYMBOLS 1 ... Mixing tube, 2 ... Burner body, 3 ... Burner head, 7 ... Spark plug, 30 ... Cooking flame hole (flame hole), 36 ... Overhang part, 40 ... Ignition flame hole, 42 ... Discharge target.

Claims (2)

A mixing tube for generating a mixed gas of fuel gas and primary air, a burner body connected to the mixing tube, and a burner mounted on the burner body and forming a plurality of flame holes along the outer peripheral end In a stove burner comprising a head and a spark plug for igniting the flame hole,
The burner head includes an ignition flame hole that is ignited by the ignition plug, and a projecting portion that projects radially outward from an outer peripheral surface of the burner head corresponding to the ignition flame hole,
The overhanging portion includes an upper wall, a pair of side hanging walls extending downward from both circumferential edges of the burner head on the upper wall, and a leading edge of the upper wall extending continuously from the both side hanging walls. and a front hanging wall extending downwardly from,
The stove burner according to claim 1 , wherein a lower edge of the front hanging wall and a lower edge of the side hanging wall are located below the ignition flame hole . Provided on the inner side of the overhang portion is a discharge target that projects downward corresponding to the position of the spark plug,
Lower edge of the lower edge and side hanging wall of the front depending wall of the overhanging portion, characterized in that located above the lower end of the front Symbol position or the discharge target of the lower end of the same level as the discharge target The stove burner according to claim 1.