JP4146847B2 - Stove burner - Google Patents

Description

  The present invention relates to an internal flame burner for a stove provided with a large number of flame holes opening inwardly on the inner periphery of an annular burner body.

  Conventionally, as an internal flame type burner of this type, an upper rectifying plate and a lower rectifying plate for secondary air are arranged on the upper side and the lower side of the burner body, respectively, and the mixture is ejected from the flame hole. A device in which secondary air is supplied through a gap between each rectifying plate and the burner body is known (for example, see Patent Document 1). And in this thing, in order to introduce a flame into the opening for burners established in the top plate of a stove, the taper-like cylinder part extended in the direction of diameter inward is formed in the inner peripheral part of an upper current plate. Moreover, a soup pan that faces the inner circumferential space of the burner body is attached to the lower rectifying plate so that the boiled spilled juice falling into the inner circumferential space of the burner body can be received by the soup pan.

By the way, the diameter of the upper end of the cylinder part is smaller than the opening for the burner, and there is a gap between the upper end of the cylinder part and the periphery of the opening for the burner. The boiled juice does not fall into the stove body from this gap. Most of the boiled spilled juice that has fallen on the ring member falls into the inner space of the burner body and is received by the juice tray, but some boiled spilled juice flows down from the ring member along the inner surface of the tube part There is. Here, conventionally, the outer peripheral edge of the upper rectifying plate is floated from the upper surface of the burner body over substantially the entire circumference. Therefore, boiled spilled juice that has flowed down through the cylinder part falls on the upper surface of the burner body, passes through the gap between the upper current plate and the upper surface of the burner body, and falls into the stove body from the outer peripheral edge of the burner body. There is a fear.
JP 2003-279008 A (FIGS. 1 to 3)

  In view of the above points, the present invention provides an internal flame burner for a stove that can prevent boiled juice that has flowed down along the inner surface of the cylindrical portion of the upper current plate from falling into the stove body. Is the issue.

  In order to solve the above-mentioned problems, the present invention is an internal flame burner for a stove comprising a plurality of flame holes opening inwardly on the inner periphery of an annular burner body, on the upper side and the lower side of the burner body. In addition, an upper rectifying plate and a lower rectifying plate for secondary air are arranged, respectively, and a tapered cylindrical portion extending obliquely upward in the radial direction is formed on the inner peripheral portion of the upper rectifying plate, In the case where the lower rectifying plate is equipped with a juice tray facing the inner circumferential space of the burner body, a hanging wall portion that contacts the upper surface of the burner body is formed on the outer peripheral edge of the upper rectifying plate, and the periphery of the hanging wall portion is formed. A notch that reaches the lower edge of the drooping wall portion is formed in the predetermined direction portion, and a vent hole that does not reach the lower edge of the drooping wall portion is formed in the circumferential direction portion other than the notch forming portion of the drooping wall portion. A plurality of formed parts are aligned with at least the notch forming part on the outer periphery of the lower rectifying plate. Circumferentially portion, characterized in that the juice receptacle projecting radially outward from the burner body is formed.

  According to said structure, the air which flows in from a vent hole between an upper rectifying plate and a burner main body is supplied as secondary air to the ejection part of the air-fuel mixture from a flame hole. And even if the simmered juice flows down the inner surface of the cylinder part of the upper rectifying plate and falls from the upper rectifying plate to the upper surface of the burner body, the outer periphery of the upper rectifying plate sitting on the upper surface of the burner body The drooping wall portion prevents the spilled juice from flowing out of the drooping wall portion outside the notch. Thus, the spilled portion of the boiled spill falling on the upper surface of the burner body is limited to the notch. The simmered juice that flows out from the notch is dripped from the outer peripheral edge of the burner body located outside the notch, but the juice formed on the outer periphery of the lower rectifying plate is below this dripping point. There is a receiving portion, and the boiled juice is captured at this juice receiving portion. Therefore, it is possible to prevent the boiled juice that has flowed down along the inner surface of the cylindrical portion of the upper rectifying plate from falling into the stove body.

  By the way, the upper current plate is generally attached to a bracket fixed to the burner body via an ear piece provided on the upper current plate. The bracket has an upper plate portion on which the ear piece portion is seated and a side plate portion bent downward on both sides thereof, and is fixed to the burner body with the lower end portions of the both side plate portions seated on the upper surface of the burner body. Is done. Here, if the ear piece part is formed by raising the hanging wall part and the notch is constituted by the cut and raised trace of the ear piece part, the boiled juice that has flowed out of the notch is It reaches the outer peripheral edge portion of the burner body positioned directly above the juice receiving portion without being diffused in the circumferential direction by being guided by the both side plate portions, and drops and is reliably captured by the juice receiving portion.

  In addition, since the vent hole is formed so as not to reach the lower edge of the drooping wall portion, the spilled juice that has dropped on the upper surface of the burner body does not flow outward from the vent hole. However, there is a possibility that the simmered juice that has flowed down along the inner surface of the cylinder part will reach the vent hole as it is along the inner surface of the upper rectifying plate, and the vent hole may be blocked by the spilled juice. In this case, if a bulging portion that bulges toward the inner surface side of the tube portion is formed in a circumferential portion that matches the formation portion of each vent hole in the tube portion, the spilled water that has flowed down along the inner surface of the tube portion. Juice is distributed in the circumferential direction at the bulging portion, and it is possible to effectively prevent boiling juice from reaching the vent hole.

  Referring to FIG. 1, reference numeral 1 denotes a top plate that covers the upper surface of a stove body (not shown). An annular burner body 3 faces the burner opening 1 a provided in the top plate 1 in the stove body. An internal flame burner 2 having a large number of flame holes 4 opening inward is disposed on the inner periphery of the burner. The burner body 3 is formed by stacking two press-formed upper and lower plates, and as shown in FIGS. 2 to 4, the annular distribution pipe portion 3a and a tangent line from one place around the distribution pipe portion 3a. A mixing tube portion 3b extending outward in the direction, and a flame hole forming portion 3c projecting obliquely upward from the inner periphery of the distribution tube portion 3a. A flame hole 4 is formed. Fuel gas flows into the mixing tube portion 3b from a gas nozzle (not shown) and primary air is sucked. Then, the fuel gas and the primary air are mixed in the mixing pipe portion 3b to generate an air-fuel mixture, and the air-fuel mixture is ejected from each flame hole 4 through the distribution pipe portion 3a and burned.

  An upper rectifying plate 5 and a lower rectifying plate 6 for secondary air are disposed on the upper side and the lower side of the burner body 3, respectively. To describe this in detail, brackets 7 are provided on the upper surface of the burner body 3 at two locations around the outer periphery of the distribution pipe portion 3 a, and projecting outward at two locations around the outer periphery of the upper rectifying plate 5. The upper rectifying plate 5 is fixed to the upper side of the burner body 3 by providing the ear piece portions 5a to be mounted and screwing the respective ear piece portions 5a onto the respective brackets 7. A tapered cylindrical portion 5b extending obliquely upward inward in the radial direction is formed on the inner peripheral portion of the upper rectifying plate 5, and the upper end portion of the cylindrical portion 5b is the opening for the burner of the top plate 1. 1a is inserted with a gap around it. Thus, the secondary air is supplied to the air-fuel mixture jetting portion from the flame hole 4 through the gap between the upper surface of the burner body 3 and the upper rectifying plate 5, and the combustion flame of the air-fuel mixture is caused by the cylinder portion 5b. An object to be heated, which is guided into the burner opening 1a and placed on the virtues 8 on the top board 1, is heated. The five virtue frames 8a of the five virtues 8 are also used as a cover member for preventing spillage that covers the gap between the upper end of the tube part 5 and the peripheral edge of the burner opening 1a from above. A bracket 10 for holding a flame detecting thermocouple 9 (see FIG. 3) is attached to the upper surface of the burner body 3.

  The bracket 7 for the upper rectifying plate 5 has an upper plate portion 7a on which the ear piece portion 5a of the upper rectifying plate 5 is seated, and side plate portions 7b, 7b bent downward on both sides thereof, and the both side plate portions 7b, 7b. Is fixed to the burner body 3 in a state where the lower end thereof is seated on the upper surface of the burner body 3. In more detail, a seating portion 7c that is bent outward at the lower end of each side plate portion 7b to be seated on the upper surface of the burner body 3 is formed and bent downward at the outer edge of the seating portion 7c. The bracket 7 is fixed to the burner body 3 by forming a locking portion 7 d to be inserted into the mounting hole 3 d formed in 3 and caulking the locking portion 7 d on the lower surface of the burner body 3. Further, the bracket 10 for the thermocouple 9 is also formed with a locking portion 10a to be inserted into the mounting hole 3e formed in the burner body 3, and the locking portion 10a is caulked by the lower surface of the burner body 3. Thus, the bracket 10 is fixed to the burner body 3.

  The lower rectifying plate 6 is provided with ear pieces 6a extending outward at two locations around the outer periphery of the lower rectifying plate 6, and the engaging portions 7d of the brackets 7 for the upper rectifying plate 5 are connected to the burner body. The lower rectifying plate 6 is fixed to the lower side of the burner body 3 by crimping the ear pieces 6a on the lower surface of 3 by holding them. Further, there is a gap between the lower rectifying plate 6 and the lower surface of the burner main body 3 except for the ear piece 6a, and the lower surface of the burner main body 3 and the lower rectifying plate are formed at the air-fuel mixture ejection portion from the flame hole 4. Secondary air is also supplied through the gap between the two. In addition, a downward recess 6b is formed in the central portion of the lower rectifying plate 6 facing the inner peripheral space of the burner body 3, and a juice tray 11 with a handle 11a is detachably mounted in the recess 6b. Has been. Thus, the boiled spilled juice that has fallen into the inner circumferential space of the burner body 3 is received by the juice receiving tray 11. The lower rectifying plate 6 is formed with an insertion hole 6c for the ignition electrode 12 so as to be positioned in the vicinity of one of the ear pieces 6a. Further, a slight rising portion 6d is formed on the outer peripheral edge of the lower rectifying plate 6 in order to prevent the simmered juice from falling from the outer peripheral edge into the stove body.

  By the way, when the boiled simmered juice falls on the virtuosity frame 8a, a part of the simmered soup moves from the inner peripheral edge of the virtuosity frame 8a to the inner surface of the cylindrical part 5b of the upper rectifying plate 5, and is boiled along the inner surface of the cylindrical part 5b. The spilled juice may flow down and fall from the upper rectifying plate 5 to the upper surface of the burner body 3. In this state, the boiled juice falls from the outer peripheral edge of the burner body 3 into the stove body. Therefore, a drooping wall portion 5 c that contacts the upper surface of the burner body 3 is formed on the outer peripheral edge of the upper rectifying plate 5, and the spilled juice that has fallen from the upper rectifying plate 5 to the upper surface of the burner body 3 is outside the burner body 3. The drooping wall portion 5c can prevent the flow to the edge side. In this embodiment, the hanging wall 5c is brought into contact with the upper surface of the distribution pipe 3a. However, the hanging wall 5c is brought into contact with the upper surface of the burner body 3 on the outer periphery of the distribution pipe 3a. It may be formed.

  If the drooping wall portion 5c is formed, boiled juice is accumulated on the upper surface of the burner body 3, and if a large amount of boiled juice is produced, the boiled juice overflows from the upper surface of the burner body 3 to the flame hole 4 side. Thus, the flame hole 4 may be blocked. Therefore, a notch 5d is formed on the hanging wall portion 5c so as to reach a lower edge of the hanging wall portion 5c by being positioned at a predetermined portion in the circumferential direction, and coincides with a portion where the notch 5d is formed on the outer periphery of the lower rectifying plate 6. A juice receiving portion 6e is formed so as to protrude from the burner body 3 to the outer side in the radial direction.

  According to this, the boiled sap accumulated in the inner part of the drooping wall portion 5c on the upper surface of the burner body 3 flows out from the notch 5d, and the boiled sap is excessively accumulated on the upper surface of the burner body 3. Is prevented. Moreover, since the portion where the boiled juice flows out is limited to the cutout 5d, the portion where the boiled juice flowing out from the inside of the hanging wall portion 5c drops from the outer peripheral edge of the burner body 3 also matches the portion where the cutout 5d is formed. It is limited to the circumferential direction part. And since the juice receiving part 6e which protrudes from the lower baffle plate 6 exists under this dripping location, the boiled juice that flows out through the notch 5d and drops from the outer peripheral edge of the burner body 3 is the juice receiving part 6e. It will be captured by and will not fall into the stove body.

  Here, in this embodiment, each said ear piece part 5a of the upper rectifying plate 5 is formed by raising and lowering the hanging wall part 5c, and each said notch 5d is constituted by the raised mark of each ear piece part 5a. I am doing so. Therefore, each bracket 7 for the upper rectifying plate 5 for screwing each ear piece 5a is present outside each notch 5d. Further, the juice receiving portion 6 e of the lower rectifying plate 6 extends outward from each ear piece portion 6 a of the lower rectifying plate 6 held by the locking portion 7 d of each bracket 7. Therefore, the boiled juice flowing out from the notches 5d is guided by the side plates 7b, 7b of the brackets 7 and is not diffused in the circumferential direction, so that the outside of the burner body 3 positioned right above the juice receiving portion 6e. It reaches the peripheral part and drops, and is surely captured by the juice receiving part 6e. The ear piece 6a is formed with a groove 6f recessed downward in the center in the width direction, and the boiled juice captured by the juice receiver 6e is passed through the groove 6f. 11 leads to.

  The hanging wall 5c is formed with a plurality of vent holes 5e that are positioned in the circumferential direction other than the notch 5d and do not reach the lower edge of the hanging wall 5c. Therefore, the air flowing in from the air holes 5 e into the gap between the upper rectifying plate 5 and the upper surface of the burner body 3 is supplied as secondary air to the air-fuel mixture jetting part from the flame hole 4. Here, since the vent hole 5e is formed so as not to reach the lower edge of the drooping wall portion 5c, the boiled juice dropped on the upper surface of the burner body 3 does not flow outward from the vent hole 5e. In addition, each air hole 5e is formed over the flat part of the upper baffle plate 5 extended inward from the upper end of the drooping wall part 5c so that secondary air shortage may not occur.

  By the way, there is a possibility that the simmered juice that has flowed down along the inner surface of the cylinder portion 5b of the upper rectifying plate 5 will reach the vent hole 5e as it is along the inner surface of the upper rectifying plate 5, and the vent hole 5e may be blocked by the simmered juice. There is. Therefore, in the present embodiment, as shown in FIG. 5, a bulging portion 5f that bulges on the inner surface side of the cylindrical portion 5b is formed in a circumferential portion that matches the formation portion of each vent hole 5e of the cylindrical portion 5b. Yes. Therefore, the boiled juice that has flowed down along the inner surface of the tube portion 5b is distributed in the circumferential direction by the bulging portion 5f, and the boiled juice can be effectively prevented from reaching the air holes 5e.

  Further, the bracket 10 for the thermocouple 9 is fixed to the burner body 3 so that the front end portion enters the inside of the hanging wall portion 5c of the upper rectifying plate 5. And the thermocouple 9 is attached to the bracket 10 using the pin 10b in the state which inserted the thermocouple 9 in the ventilation hole 5e formed in the part of the drooping wall part 5c corresponding to the bracket 10. FIG.

  In the above embodiment, the notch 5d is formed in the circumferential portion of the hanging wall portion 5c of the upper rectifying plate 5 facing the bracket 7. However, in addition to this notch 5d or in place of this notch 5d. In addition, a notch is formed in the other part, and the soup receptacle is located on the outer periphery of the lower rectifying plate 6 at a circumferential part that matches the notch forming part and projects radially outward from the burner body 3 A part may be formed. However, in the case where the notch 5d is not formed in the circumferential portion facing the bracket 7 of the hanging wall portion 5c, it is necessary to configure the fixing ear piece portion 5a with a separate member attached to the upper rectifying plate 5 by spot welding or the like. Therefore, the cost becomes high. Further, when the simmered juice flows out from a notch formed in a portion other than the circumferential portion facing the bracket 7 of the hanging wall portion 5c, the simmered juice in the circumferential direction by both side plate portions 7b, 7b of the bracket 7 Since the diffusion preventing function cannot be obtained, the boiled juice may be dripped from a relatively wide range of the outer peripheral edge of the burner body 3. Therefore, in order to reliably capture the boiled juice, it is necessary to form the juice receiving portion wide, and the lower rectifying plate 6 is enlarged. In order to prevent the above problems, it is desirable to configure as in the above embodiment.

  Moreover, in the said embodiment, although the juice receiving tray 11 was mounted | worn in the hollow part 6b formed in the center part of the lower rectifying plate 6, the lower rectifying plate 6 was formed in cyclic | annular form and the juice receiving tray 11 was mounted | worn on the inner periphery. May be.

Sectional drawing of the principal part of the stove which comprises the internal flame type burner of embodiment of this invention. The perspective view of the decomposition | disassembly state of the internal flame type burner of embodiment. The top view of the internal flame type burner of embodiment. The bottom view of the internal flame type burner of embodiment. Sectional drawing cut | disconnected by the VV line | wire of FIG.

Explanation of symbols

  2 ... Internal flame type burner, 3 ... Burner body, 4 ... Flame hole, 5 ... Upper rectifying plate, 5a ... Ear piece part, 5b ... Tube part, 5c ... Hanging wall part, 5d ... Notch, 5e ... Vent hole, 5f ... bulging part, 6 ... lower rectifying plate, 6e ... juice receiving part, 7 ... bracket, 7a ... upper plate part, 7b ... side plate part, 11 ... juice receiving tray.

Claims (3)

An internal flame burner for a stove having a large number of flame holes opening inwardly on the inner periphery of the annular burner body, and an upper current plate for secondary air, respectively, on the upper side and the lower side of the burner body The lower rectifying plate is disposed, and a tapered cylindrical portion extending obliquely upward in the radial direction is formed on the inner peripheral portion of the upper rectifying plate, and the lower rectifying plate is formed in the inner peripheral space of the burner body. In what is equipped with a facing saucer,
A hanging wall portion that contacts the upper surface of the burner body is formed on the outer peripheral edge of the upper rectifying plate, and a notch reaching the lower edge of the hanging wall portion is formed in a predetermined circumferential direction of the hanging wall portion. A plurality of ventilation holes that do not reach the lower edge of the hanging wall part are formed in the circumferential part other than the part where the notch is formed in the wall part,
An internal flame type burner for a stove, wherein a juice receiving portion that protrudes radially outward from the burner body is formed at least in a circumferential portion of the outer periphery of the lower flow rectifying plate that coincides with a portion where the notch is formed. .   The upper rectifying plate is attached to a bracket fixed to the burner body via an ear piece provided on the upper rectifying plate, and the bracket is bent downward on both sides of the upper plate portion on which the ear piece is seated. A side plate portion that is fixed to the burner body in a state where the lower end portions of both side plate portions are seated on the upper surface of the burner body, and the ear piece portion is formed by raising the hanging wall portion. The internal flame burner for a stove according to claim 1, wherein the notch is constituted by a cut and raised mark.   3. The stove for a stove according to claim 1, wherein a bulging portion that bulges toward the inner surface side of the cylindrical portion is formed in a circumferential portion that matches the formation portion of each of the vent holes of the cylindrical portion. Internal flame burner.

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