JP5184674B2 - Stove burner - Google Patents

Abstract

Provided is a burner for a stove, having a simple configuration and configured in such a manner that maintenance, such as cleaning, of the burner can be easily performed and in addition that the burner provides good combustion. A burner for a stove is provided with: a burner body (5) having, at the center of the bottom section (8) thereof, a vertically extending cylindrical throat section (9); a burner cap (6) mounted on the burner body (5) and forming flame holes; and a holder (7) for holding the burner body (5). The holder (7) is provided with: a base section (27) having a nozzle (31) for upwardly ejecting fuel gas; a support section (28) raised from one side of the base section (27); a seat plate (29) extending transversely from the support section (28) to face the base section (27) and supporting the burner body; and a throat insertion and installation section (35) in which the throat section (9) of the burner body (5) is inserted and installed. The base section (27) and the seat plate (29) are formed integrally through the support section (28).

Description

  The present invention relates to a stove burner.

  Conventionally, a burner body mounted on a top plate, a burner cap mounted on the upper portion of the burner body, and a holder that is located at the bottom of the top plate and holds a nozzle, the burner body and the holder sandwiching the top plate A stove burner in which and are connected by a screw member is known (see Patent Document 1 below).

  In this stove burner, the center part of the back surface of the burner cap faces the upper end of the throat part with a predetermined gap, and an annular chamber connected to the throat part is defined. A large number of flame holes are defined with an interval of.

  When the fuel gas is injected from the nozzle provided below the throat portion toward the lower end opening of the throat portion, the primary air is sucked together with the fuel gas from the lower end opening of the throat portion, and mixed and mixed in the throat portion. Gas is supplied from the upper end of the throat part to the flame hole through the chamber. According to such a configuration, there is an advantage that the burner can be reduced in size and weight.

JP-T-2006-526126

  However, in the above-mentioned conventional one, the burner body and the holder are connected by the screw member with the top plate in between, so if an assembly error or deviation between the burner body and the holder occurs due to looseness of the screw member, There is a risk of misalignment between the axis of the nozzle and the axis of the throat, resulting in poor combustion due to insufficient mixing of fuel gas and primary air in the throat.

  Also, when removing the burner body from the top plate during cleaning such as cleaning, it is troublesome to release the connection with the holder by the screw member, and the burner body and the holder are connected by the screw member after cleaning. The work is also troublesome.

  Moreover, in the said conventional thing, since the connection position of the burner body and holder by a screw member is located in the immediate vicinity of a flame hole, the heat of a burner body is transmitted to a holder in a high temperature state. For this reason, the nozzle held by the holder is heated to cause a change in nozzle diameter due to thermal expansion or the like. Due to this, the fuel gas does not have a desired injection amount, and good combustion may not be obtained.

  In view of the above points, an object of the present invention is to provide a stove burner having a simple structure that not only can be easily maintained such as cleaning, but also can achieve good combustion.

A burner for a stove according to the present invention has a burner body having a cylindrical throat portion extending vertically through a disc-shaped bottom portion, and a plurality of flames on the outer periphery by being detachably mounted on the burner body. A burner cap for forming a hole; and a holder for detachably holding the burner body. The holder is provided with a base provided with a nozzle for jetting fuel gas upward, and is erected on one side of the base. Formed on the seat plate and supported by the seat plate, the seat plate extending laterally from the support piece, facing the base portion, and supporting the burner body at a position spaced from the base portion. and a throat insertion portion for inserting the throat portion of the burner body that is, the base part and the seat plate in stove burner that is formed integrally through the support piece, the seat of the holder The plate is inserted into the throat A cylindrical protrusion that protrudes upward along the outer periphery of the stove and penetrates the top plate of the stove, and supports the burner body by seating the bottom of the burner body on the upper edge of the protrusion, The protrusion includes a notch formed at a part thereof, and the burner body includes a protrusion at a part of a bottom thereof that is positioned by being engaged with the notch, and the protrusion includes the notch. The wall part which covers the outer side of this was provided integrally .

  According to the present invention, the burner body can be held by the holder simply by inserting the throat portion of the burner body into the throat insertion portion. For this reason, not only the screwing operation or the like is not required as in the prior art, but also a reduction in assembly accuracy due to the screwing can be prevented, and cleaning and the like can be easily performed. In addition, since the base, the support piece, and the seat plate constituting the holder are integrally formed, the number of parts is reduced, the structure is simplified, and the size and weight can be easily reduced.

  In addition, since the base portion of the holder, the support piece, and the seat plate are integrated, there is no positional deviation between the nozzle provided on the base portion and the throat insertion portion. When the throat portion of the burner body is inserted into the throat insertion portion, the movement of the throat portion is restricted by the throat insertion portion. Therefore, the positional deviation between the throat portion and the nozzle does not occur. As a result, when the burner body is set in the holder, the throat portion and the nozzle are positioned with extremely high accuracy, so that it is possible to reliably prevent a combustion failure caused by a positional deviation between the throat portion and the nozzle.

  Further, the burner body held by the holder comes into contact only with the throat insertion portion provided at a part of the seat plate of the holder. As a result, heat transfer from the burner body to the holder can be suppressed compared to the conventional configuration in which the burner body and the holder are connected in the immediate vicinity of the flame hole. The change can be prevented and good combustion can be obtained.

  Since a protrusion is provided on the seat plate of the holder and the burner body is seated on the upper edge of the protrusion, the contact portion between the outer periphery of the throat portion of the burner body and the protrusion of the holder becomes extremely small, and the burner body The transfer of heat from the nozzle to the holder can be reduced, and the change in nozzle diameter due to the thermal expansion of the nozzle can be suppressed.

Furthermore, since the protrusion is provided so as to protrude on the seat plate of the holder, it can be protruded upward from the top plate. Accordingly, it is easy to visually confirm the protruding portion with the burner body removed from the holder. Therefore, when the burner body is set in the holder after cleaning such as cleaning, the throat portion of the burner body can be accurately inserted into the throat insertion portion through the protruding portion, and the burner body is set in the holder. Work can be done very easily. Furthermore, foreign matters such as boiled juice are not easily invaded into the inside by the protruding portion, and adhesion of foreign matters to the nozzle can be prevented.
Further, when the burner body is set in the holder, the protrusion of the burner body is engaged with the notch of the protruding portion, so that inadvertent rotation of the burner body relative to the holder can be prevented. Therefore, the state in which the burner body is held by the holder can be maintained with high accuracy without using a screw member or the like as in the prior art.
Furthermore, the wall portion that covers the outside of the cutout is provided integrally with the protruding portion, so that even if the broth spilled from the pan flows on the top plate and enters the cutout of the protruding portion, the wall portion Prevents that soup from entering the stove.

  Moreover, at this time, it is preferable that the said protrusion part is provided with the contact part contact | abutted to the bottom part of the said burner body, and the non-contact part which does not contact the bottom part of the said burner body.

  According to this, since the non-contact portion is not in contact with the bottom portion of the burner body, the contact area between the burner body and the holder becomes extremely small. Thereby, the transmission of heat to the nozzle can be reliably suppressed.

  Moreover, for example, even if boiled broth spilled from the pan during cooking is turned to the bottom side of the burner body, the contact area between the burner body and the holder is extremely small, so that the burner body and the holder can be prevented from sticking to the burner. Since the burner body can be smoothly removed from the holder, operations such as cleaning can be easily performed.

  In the present invention, the support piece of the holder holds a spark plug that performs a spark discharge with a target protruding on the lower surface of the end portion of the burner cap, and the burner body is attached to the peripheral wall portion thereof. A recess is provided to accommodate at least a part of the spark plug.

  By accommodating at least a part of the spark plug in the recess provided in the burner body, the operation of the spark plug can be maintained while avoiding the influence of the soup dripping from above.

  Furthermore, for example, when an attempt is made to set the burner body in the holder in a state in which the phase of the recess of the burner body and the spark plug are out of phase, the spark plug that is partially accommodated in the recess interferes with the burner body. According to this, since the work of setting the burner body in the holder is hindered, the operator will surely notice the phase shift between the recess and the spark plug, and prompt the alignment of the recess and the spark plug. It is possible to reliably prevent the burner body from being set incorrectly.

Explanatory sectional drawing which shows the burner for stoves of a reference example . The bottom view of a burner body. The top view which shows the burner for stoves of the state which removed the burner cap. The perspective view which partially decomposes and shows the burner for stove. The perspective view which decomposes | disassembles and shows a holder and a burner body. The side view which shows the interference state of a burner body and a spark plug. Explanatory drawing which carried out planar view of the principal part of the burner for stove of embodiment of this invention . Explanatory drawing which looked at the principal part of the burner for stove of embodiment of this invention in cross section.

First, a reference example having a configuration common to the embodiment of the present invention will be described with reference to FIGS. In FIG. 1, 1 has shown a part (bottom part) of the stove main body of a gas stove. The stove body 1 has a box shape (not shown) with an open upper surface, and a top plate 2 is placed on the open upper surface of the stove body 1. The top plate 2 is provided with a burner opening 3, and a stove burner 4 that is exposed above the top plate 2 through the burner opening 3 is provided. In addition, although not shown in figure, five virtues are mounted on the top plate 2 around the burner opening 3, and heating cooking can be performed by placing a cooking container such as a pot on the five virtues.

  As shown in FIG. 1, the stove burner 4 is positioned below the top plate 2, a burner body 5 positioned above the top plate 2, a burner cap 6 placed on the burner body 5, and below the top plate 2. And a holder 7 for holding the burner body 5. The burner cap 6 is detachable from the burner body 5, and the burner body 5 is detachable from the holder 7. Thereby, the burner body 5 and the burner cap 6 are removed from the holder 7 so that cleaning such as cleaning can be easily performed.

  The burner body 5 includes a disk-shaped bottom portion 8, a cylindrical throat portion 9 that extends in the vertical direction through the center of the bottom portion 8, and an annular peripheral wall portion 10 that stands on the outer peripheral edge portion of the bottom portion 8. Has been. The throat portion 9 includes an upper extension portion 11 extending above the bottom portion 8 and a lower extension portion 12 extending below the bottom portion 8, and upper and lower ends are opened.

  As shown in FIG. 2 from the bottom side of the burner body 5, the bottom 8 of the burner body 5 has a plurality of recesses 13 along the circumferential direction of the downward extension 12 and a part of the downward extension 12. Adjacent protrusions 14 are formed. A recess 15 is formed in the peripheral wall 10 of the burner body 5. As shown in FIGS. 1 and 3, a part of a spark plug 16 described later is accommodated in the recess 15.

  As shown in FIG. 1, the burner cap 6 includes a cylindrical wall portion 17 that is seated on the upper surface of the peripheral wall portion 10 of the burner body 5. The cylindrical wall portion 17 is formed with a plurality of large and small types of grooves having different depths with a circumferential interval.

  When the burner cap 6 is placed on the burner body 5, the upper portion of the burner body 5 is covered by the burner cap 6, and the back surface of the burner cap 6 is left with a predetermined gap at the upper end of the upper extension portion 11 of the throat portion 9. Opposite. An annular chamber 18 is defined between the upward extending portion 11 of the throat portion 9 and the peripheral wall portion 10. Further, the groove formed in the cylindrical wall portion 17 of the burner cap 6 becomes a hole by the peripheral wall portion 10 of the burner body 5, and a number of flame holes are defined in the outer peripheral portion of the chamber 18.

  Briefly describing these flame holes, as shown in FIGS. 1 and 4, a relatively wide small groove is formed in the portion of the cylindrical wall portion 17 of the burner cap 6 facing the recess 15, and the burner body An ignition flame hole 19 is defined on the peripheral wall portion 5. In addition, three small grooves are continuously formed in the portion of the cylindrical wall portion 17 of the burner cap 6 that is located in the same direction as the five virtue claws of the five virtues (not shown). A flame hole 20 is defined. This prevents the flame from coming into contact with the five virtue claws and causing poor combustion. Large grooves and small grooves are alternately formed in the portion of the cylindrical wall portion 17 of the burner cap 6 at a position corresponding to the five virtue claws, and a normal flame hole 21 is defined on the peripheral wall portion 10 of the burner body 5 by the large grooves. A flame retaining hole 22 is defined on the peripheral wall portion 10 of the burner body 5 by the small groove.

  As shown in FIG. 4, an ignition target 23 projects from the back side of the burner cap 6 corresponding to the recess 15 of the peripheral wall 10 of the burner body 5.

  Further, at a position corresponding to the upper extension portion 11 of the burner body 5 on the back surface side of the burner cap 6, three third positions for positioning the axial center of the burner cap 6 are brought into contact with the outer peripheral surface of the upper extension portion 11. One positioning claw 24a is formed. The first positioning claw 24a prevents inadvertent displacement of the burner cap 6 placed on the burner body 5. A second positioning claw 24 b extending downward to a predetermined position inside the cylindrical wall portion 17 is formed on the back surface side of the burner cap 6. The second positioning claw 24 b positions the burner cap 6 placed on the burner body 5 by engaging with a positioning recess 25 formed in the burner body 5. Thereby, careless rotation of the burner cap 6 with respect to the burner body 5 is prevented.

  As shown in FIG. 1, the holder 7 is cantilevered by a base 27 attached on a base 26 provided on the stove body 1, a support piece 28 standing on one side of the base 27, and the support piece 28. And a seat plate 29. The base 27, the support piece 28, and the seat plate 29 are integrally formed of a metal block such as an aluminum alloy.

  A gas passage 30 for fuel gas is formed in the base portion 27 of the holder 7, and a nozzle 31 communicating with the gas passage 30 is attached above the gas passage 30. The nozzle 31 has a gas injection port 32 for injecting fuel gas vertically upward.

  When the burner body 5 is set in the holder 7, the throat portion 9 faces the gas injection port 32 at the tip of the nozzle 31, and the fuel gas can be injected toward the lower end opening of the throat portion 9. When fuel gas is injected from the nozzle 31 toward the lower end opening of the downwardly extending portion 12 of the throat portion 9, the fuel gas enters the throat portion 9 while entraining air as primary air from the surroundings. The fuel gas and the primary air are mixed to generate a mixed gas. This mixed gas flows out from the upper end opening of the upward extending portion 11 of the throat portion 9 and hits the back surface of the burner cap 6. The mixed gas that has hit the back surface of the burner cap 6 passes through the gap between the upper end of the upper extension portion 11 and the back surface of the burner cap 6 and is spread along the back surface of the burner cap 6 in the radial direction. Go to each flame hole in an evenly distributed state.

  As shown in FIGS. 3 and 5, a holding portion 33 is integrally formed on the support piece 28 of the holder 7, and the spark plug 16 performs spark discharge with the target 23 of the burner cap 6 by the holding portion 33. And a thermocouple 34 that is located outside the burner body 5 and detects a flame is held.

  As shown in FIGS. 1 and 5, the seat plate 29 is provided with a throat insertion portion 35 into which the downward extending portion 12 of the throat portion 9 of the burner body 5 is detachably inserted. Further, the seat plate 29 is formed with a cylindrical projecting portion 36 that is annularly formed along the outer periphery of the throat insertion portion 35 and projects upward from the seat plate 29. The throat insertion part 35 and the protrusion part 36 are continuous with the same inner diameter, and the outer peripheral upper end of the downward extension part 12 is in line contact with the inner peripheral upper end of the protrusion part 36. As shown in FIG. 1, the projecting portion 36 of the seat plate 29 penetrates the burner opening 3 of the top plate 2 and projects upward from the top plate 2, and the upper surface of the seat plate 29 contacts the back surface of the top plate 2. Touch. Although not shown, the seat plate 29 and the top plate 2 are connected by a screw member or the like. Further, the top plate 2 is set after the stove body 1 is assembled to the counter top. At this time, there is also an advantage that the top plate 2 can be set smoothly by the protrusion 36 being positioned on the top plate 2.

  As shown in FIGS. 1 and 5, a notch 37 is formed in the protruding portion 36. When the burner body 5 is held by the holder 7, the burner body 5 is inserted into the throat insertion portion 35 of the seat plate 29 from the downwardly extending portion 12 side, and the protrusion 14 of the burner body 5 is engaged with the notch 37. The bottom portion 8 of the burner body 5 is seated on the upper edge of the protruding portion 36 of the seat plate 29 while being combined. The notches 37 and the protrusions 14 correspond to the engaging portion and the engaged portion of the present invention.

  Thereby, the burner body 5 is phased and centered with respect to the holder 7, the throat portion 9 is positioned with respect to the nozzle 31, and further, the recess 15 of the burner body 5 is positioned so as to correspond to the spark plug 16. The At this time, since the base 27, the support piece 28, and the seat plate 29 constituting the holder 7 are integrally formed of a metal block, the positional deviation between the nozzle 31 provided on the base 27 and the throat insertion portion 35 is prevented. Does not occur. And since the downward extension part 12 of the throat part 9 of the burner body 5 is inserted and regulated by this throat insertion part 35, the positional offset of the downward extension part 12 of the throat part 9 and the nozzle 31 also arises. Absent. As a result, when the burner body 5 is set in the holder 7, the throat portion 9 and the nozzle 31 are positioned with extremely high accuracy, so that it is possible to reliably prevent the combustion failure caused by the positional deviation between the throat portion 9 and the nozzle 31. can do.

  By the way, when relatively high-temperature heat from the burner body 5 is transmitted to the nozzle 31, the diameter of the gas injection port 32 changes due to the thermal expansion of the nozzle 31 and the fuel gas does not reach the desired injection amount. The desired amount of combustion may not be obtained. The holder 7 can be compactly formed with a small number of parts by integrating the base 27, the support piece 28, and the seat plate 29, but the heat from the burner body 5 is supported by the seat plate 29 and the support of the holder 7. It may be transmitted to the nozzle 31 of the base 27 through the piece 28.

And only in the configuration of the reference example, the outer peripheral upper end of the lower extending portion 12 of the throat portion 9 in a position relatively distant from the peripheral wall portion 10 which the flame holes are formed in the bar Nabodi 5, the seat of the holder 7 The seat plate 29 of the holder 7 is positioned away from the flame hole of the burner body 5 as well as being in line contact with the inner peripheral upper end of the protruding portion 36 provided in a part of the plate 29. This ensures, as compared with the configuration in which the nearest burner body and the holder of the burner port is connected, it is possible to suppress the transfer of heat from the burner body 5 to the holder 7. Moreover, since the burner body 5 set in the holder 7 is seated on the upper edge of the protrusion 36 formed on the seat plate 29 of the holder 7, the contact portion between the burner body 5 and the holder 7 is extremely small. Therefore, heat transfer from the burner body 5 to the nozzle 31 can be reduced, and a change in the diameter of the gas injection port 32 due to thermal expansion of the nozzle 31 can be suppressed.

Further, as shown in FIG. 2, a plurality of hollow portions 13 are formed in the bottom portion 8 of the burner body 5 along the circumferential direction of the downward extending portion 12. As a result, at the upper edge of the protrusion 36 (shown in phantom in FIG. 2), the bottom portion of the burner body 5 by the contact portion 36a that contacts the bottom portion 8 of the burner body 5 and the recess portion 13 of the burner body 5. 8 and the non-contact part 36b which is non-contact are formed, the contact area between the burner body 5 and the holder 7 is further reduced. Thereby, the transmission of heat to the nozzle 31 can be made extremely small, the change in the diameter of the gas injection port 32 due to the influence of heat can be prevented, and good combustion can be obtained. Furthermore, even when the broth spilled from the pan during cooking is turned to the bottom 8 side of the burner body 5, the burner body 5 and the holder 7 can be prevented from being fixed by the broth due to the small contact area. Work becomes easy. In the configuration of the reference example described above, the example in which the non-contact portion 36b is formed by providing the recess portion 13 in the bottom portion 8 of the burner body 5 is shown. In addition, a non-contact portion may be formed by providing a plurality of notches on the upper end of the protruding portion 36.

  Moreover, since only the protrusion 36 provided on the seat plate 29 of the holder 7 protrudes above the top plate 2, it is easy to visually confirm the protrusion 36 with the burner body 5 removed from the holder 7. Thereby, when the burner body 5 is set in the holder 7 after cleaning or the like, the downwardly extending portion 12 of the burner body 5 can be accurately inserted into the throat insertion portion 35 through the protruding portion 36. The operation of setting the burner body 5 in the holder 7 can be performed very easily. Moreover, the assembly of the burner body 5 to the holder 7 is completed simply by inserting the downwardly extending portion 12 of the burner body 5 into the throat insertion portion 35 via the protruding portion 36 protruding from the top plate 2. Not only is screwing work unnecessary as in the prior art, but also lowering of assembly accuracy due to screwing can be prevented.

  Further, when the burner body 5 is set in the holder 7, the protrusion 14 of the burner body 5 engages with the notch 37 of the protrusion 36, so that inadvertent rotation of the burner body 5 relative to the holder 7 can be prevented. .

  By the way, in cooking with a gas stove, the broth spilled from the pan onto the top plate 2 may flow below the burner body 5 toward the projecting portion 36. At this time, if the notch 37 is formed in the protruding portion 36 of the holder 7, for example, it is considered that the broth enters the inside of the throat insertion portion 35 through the notch 37. There is a risk that the broth will enter.

Therefore, in this embodiment, in addition to the configuration of the reference example, as shown in FIGS. 7 and 8, digits set the wall portion 38 covering the outside of the notch 37 in the projection 36. According to this, the wall part 38 covers the outside of the notch 37 and the spilled spilled on the top plate 2 can be dammed, and the simmered soup can be prevented from entering the stove body 1.

Further, as shown in FIG. 8, a slight between the bottom 8 of the upper edge and the burner body 5 of the wall portion 38 (e.g., about 0.5 mm) of the wall portion 38 so that a gap x is formed It is preferable to set the dimension in the height direction. Thereby, the increase in the contact area of the burner body 5 and the holder 7 accompanying providing the wall part 38 can be prevented, and the effect of the non-contact part 36b by the hollow part 13 mentioned above is not inhibited.

  As shown in FIG. 1, at least a part of the spark plug 16 can be accommodated in the recess 15 provided in the burner body 5. As a result, even if the burner body 5 is to be set in the holder 7 with the recess 15 of the burner body 5 and the spark plug 16 being out of phase, the spark plug 16 interferes with the burner body 5 as shown in FIG. Therefore, the operator can be surely noticed the phase shift between the recess 15 and the spark plug 16, and the misalignment of the burner body 5 is promoted by urging the positioning of the recess 15 and the spark plug 16. Can be prevented.

  DESCRIPTION OF SYMBOLS 1 ... Stove burner, 5 ... Burner body, 6 ... Burner cap, 7 ... Holder, 8 ... Bottom part, 9 ... Throat part, 14 ... Protrusion (engaged part), 15 ... Recess, 16 ... Spark plug, 19, 20, 21 and 22 ... Flame hole, 23 ... Target, 27 ... Base part, 28 ... Supporting piece, 29 ... Seat plate, 31 ... Nozzle, 35 ... Throat insertion part, 36 ... Projection part, 36a ... Contact part, 36b ... non-contact part, 37 ... notch (engagement part), 38 ... wall part.

Claims (3)

A burner body having a cylindrical throat portion extending vertically through a disc-shaped bottom, and a burner cap that is detachably mounted on the burner body to form a plurality of flame holes on the outer periphery; A holder for detachably holding the burner body, and the holder includes a base provided with a nozzle for ejecting fuel gas upward, a support piece standing on one side of the base, and the support A seat plate extending laterally from one side, facing the base, and supporting the burner body at a position spaced from the base, and a throat portion of the burner body formed on the seat plate and supported by the seat plate and a throat insertion portion for inserting the said base portion and said seat plate in stove burner that is formed integrally through the support piece,
The holder seat plate includes a cylindrical projecting portion projecting upward along the outer periphery of the throat insertion portion and penetrating the top plate of the stove, and the bottom portion of the burner body is formed on the upper edge of the projecting portion. The burner body is supported by being seated,
The protrusion includes a notch formed in a part thereof,
The burner body includes a protrusion that is positioned by engaging the notch at a part of the bottom of the burner body,
A stove burner characterized in that a wall portion covering the outside of the notch is provided integrally with the protruding portion . 2. The stove burner according to claim 1 , wherein the protrusion includes a contact portion that contacts the bottom portion of the burner body and a non-contact portion that does not contact the bottom portion of the burner body . On the support piece of the holder is held an ignition plug that performs a spark discharge with a target protruding on the lower surface of the end of the burner cap,
The burner for a stove according to claim 1 or 2, wherein the burner body is provided with a recess for housing at least a part of the spark plug in a peripheral wall portion thereof .

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