JP2007218498A - Gas cooking stove - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To accurately position a grate at a normal phase angle and surely prevent leaving of the grate in a wrongly set state, in a gas cooking stove which comprises a burner 2 protruded upward a top plate 1 through a burner opening 2 opened in the top plate and the grate 5 having a plurality of grate claws 52 extending radially outward from a central connecting part 51 located above the burner. <P>SOLUTION: A plurality of grate support members 6 for seating a seating part 54 of each grate claw 52 at a position higher by a predetermined distance from the upper surface of the top plate 1 is arranged on the top plate 1. Each grate support member 6 includes an engagement part 62 which is engaged with the seating part of each grate claw 52 to position the grate claw 52. A projection part 56 is formed on the lower surface of the central connecting part 51 of the grate 5, and a curved or conical protruding surface part 39 having an apex opposed to the lower end of the projection part 56 through a vertical space shorter than the predetermined distance is formed on the upper surface of the burner 3. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention includes a burner that protrudes upward from the top plate through a burner opening established in the top plate, and a five virtues that have a plurality of virgin claws that extend radially outward from a central joint located above the burner. It relates to the gas stove provided.

  Conventionally, a gas stove generally uses five virtues in which a plurality of virtuosity claws are attached to an annular virtuosity frame seated on a top plate. Here, recently, gas stoves using a top plate made of a glass plate or a thick metal plate have become popular. This is because the top surface of the top plate becomes flat, so that a flowing and high-class feeling can be obtained. In such a gas stove, it is desired to make the top plate visible in a wide range. However, if the five virtues with the five virtue frames are used, the top plate is partially blindfolded by the five virtue frames.

  Therefore, using the five virtues having a plurality of virgin claws extending radially outward from the central coupling portion located above the burner, forming a leg portion extending downward at the radially outer end of each virtuary claw, There is also known a gas stove in which the five virtues are seated on the top surface of the top plate in the seating portion at the lower end of each leg. Since the five virtue claws are connected to each other at the central connecting portion, the five virtue frames are not required, the top plate is exposed in a wide range without being hidden by the five virtue frames, and the appearance is improved.

  By the way, many flame holes are opened on the peripheral surface of the burner, but if the flame formed in the flame hole touches the virgin claws, combustion failure occurs, so the circumferential arrangement pitch of the virgin claws on the peripheral surface of the burner and Flame-free holes and small flame holes are formed at equal circumferential intervals to prevent the flame from touching the virtuosity claw. However, if the virtues are not set in the normal phase where the virtuosity claw is located at the same circumferential position as the flameless hole portion and the small flame hole portion, the flame will touch the virtuosity claw and cause combustion failure.

  Therefore, in a gas stove using a gorge having a central coupling part, a protrusion that engages with a recess formed on the lower surface of the part near the central coupling part of the virgin claw is formed on the upper surface of the burner to position the gorge in the normal phase. Like to do. In this case, in order to facilitate the engagement of the protrusion with the recess, it is necessary to secure an engagement clearance between the two, and the virtues can move in the circumferential direction by this clearance. And since a hollow part is formed in the part near a center coupling | bond part, the part near the radial direction outer end of a virgin nail | claw is largely shifted | deviated to the circumferential direction by the movement to the circumferential direction of 5 virtues for an engagement clearance, and a flameless hole There is a possibility that a flame formed in a flame hole other than the part and the small flame hole part touches the five virtue claws. In addition, even in the wrong set state where the five virtue claws are disengaged from the protrusion in the circumferential direction, the five virtues are stably supported on the top plate at the seating portion of each virtue claw, so that the wrong set state is not noticed and is left as it is. There is a possibility.

  By the way, although it is a gas stove using five virtues having a five virtue frame, the circumferential arrangement pitch of the five virtue claws on the outer peripheral portion of the upper surface of the annular cover ring that closes the gap between the burner opening of the top plate and the burner inserted therethrough There are known ones in which a plurality of engagement recesses are provided with a circumferential interval equivalent to that of each of the five virtues and the virtues are positioned in the normal phase by engaging the respective engagement recesses (for example, , See Patent Document 1).

Even in a gas stove using a virtuosity having a central coupling portion, it is conceivable to position the virtues in the normal phase by engaging the seating portions of the respective virtuosity claws with the respective engagement recesses provided on the outer peripheral portion of the upper surface of the cover ring. According to this, since the engaging recess is positioned radially outward from the protrusion on the upper surface of the burner described above, the outer side of the virtuosity claw by the circumferential movement of the virtues corresponding to the engagement clearance of the seating portion with respect to the engaging recess The amount of deviation in the circumferential direction of the portion near the end can be kept small. However, in this case, even if the seats of the five virtue claws are disengaged in the circumferential direction from the engagement recesses, the seats of the five virtue claws are seated on the upper surface of the burner ring and the virtues are stably supported. End up. As a result, there is still a possibility that the five virtues will be left in the wrong set state.
JP 2003-269931 A

  In view of the above points, the present invention makes it possible to position the normal phase in a state where the amount of deviation in the circumferential direction of the portion near the radially outer end of the five virtues having the central coupling portion is suppressed as much as possible. The task is to provide a gas stove that can reliably prevent the five virtues from being left in the wrong set state.

  In order to solve the above-described problems, the present invention provides a plurality of burners that project upward from the top plate through a burner opening formed in the top plate, and a plurality of radially extending radially outwards from a central coupling portion located above the burner. A gas stove having five virtue claws, wherein a leg portion extending downward is formed at the radially outer end of each of the five virtue claws, on the top plate, the lower end of the leg portion of each of the five virtue claws A plurality of five virtue support members that are seated at a position a predetermined distance higher than the upper surface of the top plate are arranged at intervals equal to the circumferential arrangement pitch of the five virtue claws, and at least two of these five virtue support members Each of the five virtue support members is provided with an engaging portion that engages a seating portion of the corresponding five virtue claw and restrains the five virtue claws, and a protrusion is formed on the lower surface of the central connecting portion of the five virtues, and on the upper surface of the burner. , The seat of each virtuosity nail is each virtues support member With vertex facing in presence of the gap of a predetermined distance shorter than the vertical direction to the lower end of the protrusion in the seating state, characterized in that the convex portion of the curved or cone is formed.

  According to the present invention, the seat portions of the five virtue claws are seated on the respective virtue support members, and the engagement portions provided on the at least two virtue support members are engaged with the corresponding seat portions of the five virtue claws. If you set the virtues to do so, the virtues are positioned in the normal phase. And since an engaging part engages with the seat part located near the radial direction outer end of a virtuary claw, even if the virtues can move in the circumferential direction by the engagement clearance of the seat part with respect to the engaging part, The amount of deviation in the circumferential direction of the portion near the outer end in the radial direction is suppressed to a minute amount substantially equal to the engagement clearance.

  In addition, when the five virtues are set in the normal phase, the seats of the five virtue claws are supported at a position higher than the top surface of the top plate by a predetermined distance. In the wrong set state, the seats of the five virtue claws are not supported by the five virtue support members, but fall by a predetermined distance and attempt to sit on the top board. However, in the present invention, since the distance between the lower end of the protrusion provided on the lower surface of the central connecting portion of the virtues and the apex of the convex portion of the upper surface of the burner is shorter than the predetermined distance, Before sitting on the protrusion, the lower end of the protrusion comes into contact with the convex portion, and the virtues are supported by the convex portion at one point. Therefore, the support of the virtues becomes very unstable, the virtues are tilted, and it is obvious at a glance that they are in the wrong set state. Therefore, it is possible to reliably prevent the five virtues from being left in the wrong set state.

  By the way, in the present invention, each virtuosity support member is fastened to the burner, and an umbrella portion is formed on the burner so as to cover the fastening portion of the virtuosity support member from above, and each virtuoso support member is radially outward from the umbrella portion. Overhang, the circumferential width is equal to the circumferential width of the seat portion of each of the five virtue claws, and the seat portion of each virtue claw is seated on the upper surface of the outer end of the overhang portion of each of the five virtue support members Is desirable. According to this, each virtues support member used as the positioning reference | standard of virtues will be fixed directly to a burner, and virtues will be correctly positioned with respect to a burner. Moreover, the fastening location of the five virtue support members is hidden by the umbrella portion of the burner so that it does not appear on the exterior. Further, the overhanging portion of each virtuosity support member will extend in the radial direction with the same width as the seating portion between the umbrella portion and the seating portion of each virtuoso claw, and the overhanging portion is integral with the virtuosity claw. A visual impression can be given, and the appearance is very good, coupled with the fact that the fastening points of the five virtue support members are blindfolded.

  In addition, an annular cover ring that closes the gap between the burner opening and the burner is provided, and a plurality of five virtue support members are placed on the cover ring, and the five virtue support members are fastened together with the cover ring to the burner. It is desirable. According to this, boiled juice can be prevented from falling into the stove from the gap between the burner opening and the burner, and the cover ring can be fastened to the burner with the fastening screws for the five virtue support members. The cost can be reduced by reducing the cost.

  1 and 2, reference numeral 1 denotes a top plate of a gas stove. The top plate 1 is formed of a glass plate such as ceramic glass or a thick metal plate such as aluminum. The top plate 1 is provided with a burner opening 2, and a burner 3 protrudes above the top plate 1 through the burner opening 2.

  The burner 3 is fitted into the mixing tube 31 installed in the stove body 4 covered with the top plate 1 and the upper end portion of the mixing tube 31 inserted into the burner opening 2 of the top plate 1. The burner body 32 protrudes upward, and the burner head 33 is placed on the burner body 32. A large number of tooth forms are suspended from the outer peripheral portion of the lower surface of the burner head 33, and a flame hole 34 is formed by a gap between these tooth forms. Then, an air-fuel mixture (mixed gas of fuel gas and primary air) from the mixing pipe 31 is ejected from the flame hole 34 through the burner body 32, and the top plate 1 is heated by the flame generated by the combustion of the ejected air-fuel mixture. The object to be heated placed in the five virtues 5 is heated.

  The five virtues 5 are cast products having a central coupling portion 51 located above the burner 3 and a plurality (four in this embodiment) of five virtue claws 52 extending radially outward from the central coupling portion 51. is there. These five virtue claws 52 are mutually coupled by the central coupling portion 51, and an annular five virtue frame that couples the five virtue claws 52 is omitted. Further, a leg portion 53 extending downward is formed at the radially outer end portion of each of the five virtue claws 52, and a seating portion 54 is formed at the lower end of the leg portion 53 so as to project in the shape of a tongue piece radially inward. .

  By the way, when the flame of the burner 3 touches the five virtue claws 52, combustion failure occurs. Therefore, a flameless hole portion (a portion without the flame hole 34) 35 is provided on the peripheral surface of the burner head 33 with a circumferential interval equivalent to the circumferential arrangement pitch of the five virtue claws 52. For this reason, if the five virtues 5 are set at the normal phase where the five virtue claws 52 are located at the same circumferential position as the flameless holes 35, it is possible to prevent the flames from touching the five virtue claws 52.

  Here, a plurality of (four in this embodiment) five virtue support members 6 are arranged on the top board 1 with a circumferential interval equivalent to the circumferential arrangement pitch of the five virtue claws 52. When the seating portion 54 of the claw 52 is seated on each of the five virtue support members 6, the five virtues 5 are in the normal phase. Here, the five virtue support members 6 are fastened to the burner 3 with screws 61 as shown in FIGS. According to this, each virtues support member 6 used as a positioning reference for virtues 5 is directly fixed to the burner 3, and the virtues 5 are accurately positioned with respect to the burner 3.

  In detail, a cylindrical fitting portion 36 for fitting the burner body 32 to the upper end of the mixing tube 31 of the burner 3 and a flat annular surface 37 around the fitting portion 36 (see FIG. 2). The five virtue support members 6 are fastened to the annular surface 37 with screws 61. Then, an umbrella portion 38 having a diameter equal to or larger than the outer diameter of the annular surface 37 is formed on the burner body 32, and the fastening portions of the five virtue support members 6 are covered from above by the umbrella portions 38. Is blindfolded.

  Each of the five virtue support members 6 includes an arc-shaped portion 62 extending in a circumferential direction along the outer peripheral surface of the fitting portion 36 from the fastening position with respect to the burner 3, and radially outward from the end of the arc-shaped portion 62. A protruding portion 63 extending radially outward from the umbrella portion 38 in the radial direction is provided. Then, the seating portion 54 of each of the five virtue claws 52 is seated on the upper surface of the outer end portion of the overhang portion 63 at a position higher than the upper surface of the top plate 1 by a predetermined distance L. Here, the overhang portions 63 of the five virtue support members 6 are arranged at the same circumferential position as the flameless hole portions 35 of the burner 3. Therefore, by seating the seating portion 54 of each virtuosity claw 52 on the overhanging portion 63 of each virtuosity support member 6, each virtuosity claw 52 is in the normal phase where it exists at the same circumferential direction position as each flameless hole portion 35. Can be set.

  Note that when the virtues support member 6 is fastened to the burner 3 with the screws 61, tightening torque acts on the virtues support member 6, and this tightening torque is received by the fitting portion 36 via the arcuate portion 62. Therefore, the position of the overhanging portion 63 is not shifted by the movement of the five virtue support members 6 due to the tightening torque.

  Further, on the upper surface of the outer end portion of the overhanging portion 63 of each virtuosity support member 6, an engaging portion 64 is formed that includes a protrusion that engages with a hole 55 formed in the seating portion 54 of each virtuosity claw 52. Thus, the five virtue claws 52 are restrained from being displaced by the engaging portions 64 with respect to the respective five virtue support members 6, and the five virtues 5 are positioned in the normal phase. The engaging portions 64 do not necessarily have to be formed on all the five virtue support members 6. If the engaging portions 64 for the seat portion 54 of the five virtue claws 52 are formed on at least two of the five virtue support members 6, 5 can be positioned in the normal phase.

  In any case, since the engaging portion 64 engages with the hole 55 of the seating portion 54 located near the radially outer end of the virgin pawl 52, the virtues 5 are provided by the engagement clearance of the hole 55 with respect to the engaging portion 64. Even if it can move in the circumferential direction, the circumferential shift amount of the portion near the outer end in the radial direction of the virgin pawl 52 is suppressed to a minute amount substantially equal to the engagement clearance. Therefore, the circumferential position of the portion near the outer end in the radial direction of the five virtue claws 52 is reliably prevented from coming off from the flameless hole 35 and coming into contact with the flame.

  Further, in the present embodiment, the overhang portions 63 of the five virtue support members 6 are formed so that the circumferential width thereof is the same as the circumferential width of the seat portion 54. For this reason, the overhanging portion 63 of each of the five virtue support members 6 extends in the radial direction with the same width as the seating portion 54 between the umbrella portion 38 and the seating portion 54 of each of the five virtue claws 52. Accordingly, a visual impression that the overhanging portion 63 is integral with the five virtue claws 52 can be given, and coupled with the fact that the fastening portion of each of the five virtue support members 6 with respect to the burner 3 is blindfolded by the umbrella portion 38, The appearance is very good.

  Further, a protrusion 56 is formed on the lower surface of the central coupling portion 51 of the five virtues 5, and a curved convex surface portion 39 is formed on the upper surface of the burner 3, that is, the upper surface of the burner head 33. Then, in a state where the seating portions 54 of the respective virtues 52 are seated on the respective virtues support members 6 at positions higher than the upper surface of the top plate 1 by a predetermined distance L, the apex of the convex surface portion 39 is the above-mentioned predetermined distance with respect to the lower end of the projection portion 56. They are opposed to each other with a slight vertical interval shorter than L.

  Here, when the five virtues 5 are set in the erroneous setting state where the seating portions 54 of the respective five virtue claws 52 are disengaged from the respective virtue support members 6 in the circumferential direction, the seating portions 54 of the respective five virtue claws 52 are moved by the respective five virtue support members 6. It is not supported and falls by the predetermined distance L and tries to sit on the top board 1. In this case, in this embodiment, before the seating portion 54 of each virtuosity claw 52 is seated on the top plate 1, the lower end of the projection 56 of the virtues 5 comes into contact with the convex surface portion 39, and One point will be supported. Therefore, the support of Gotoku 5 becomes very unstable, and Gotoku 5 is tilted, so that it is obvious at a glance that it is in the wrong set state. Therefore, it is possible to reliably prevent the five virtues 5 from being left in the wrong set state.

  In addition, the gas stove of the present embodiment includes an annular cover ring 7 that closes a gap between the burner opening 2 and the burner 3. The cover ring 7 is composed of two upper and lower annular plates 71 and 72 as shown in FIG. On the outer periphery of the lower annular plate 72, a plurality of leaf spring portions 73 projecting radially outward are formed at intervals in the circumferential direction. Then, by setting the top plate 1 in a state where the lower annular plate 72 is seated on the annular surface 37 at the upper end of the mixing tube 31, each leaf spring portion 73 is formed on the lower surface of the peripheral portion of the burner opening 2 of the top plate 1. It makes contact. Here, the mixing tube 31 is supported in the stove main body 4 via a support plate 41 having elasticity in the vertical direction. Therefore, when the top plate 1 is set, the mixing tube 31 sinks due to the weight of the top plate 1 transmitted from the leaf spring portion 73 via the lower annular plate 72.

  Next, the upper annular plate 71 is placed on the lower annular plate 72 and the plurality of five virtue support members 6 are placed on the upper surface of the upper annular plate 71, and then a fastening screw for the five virtue support members 6 is installed. 61 is screwed into the mixing tube 31 through the five virtue support members 6 and the upper and lower annular plates 71, 72, so that each of the five virtue support members 6 is fastened to the mixing tube 31 together with the upper and lower annular plates 71, 72. According to this, the outer peripheral portion of the upper annular plate 71 is in close contact with the upper surface of the peripheral portion of the burner opening 2 of the top plate 1 by receiving the urging force of the leaf spring portion 73. Therefore, it is possible to prevent the spilled juice from falling into the stove body 4 from the gap between the burner opening 2 and the burner 3. In addition, by fastening each of the five virtue support members 6 together with the cover ring 7 to the burner 3, the cover ring 7 can be fastened to the burner 3 with the fastening screw 61 for the five virtue support members 6, thereby reducing the cost by reducing the number of parts. be able to.

  In the present embodiment, an annular packing 74 is attached to the lower surface of the outer peripheral portion of the upper annular plate 71 in order to improve the sealing performance by the cover ring 7. In addition, in order to position each of the five virtue claws 52 as radially outward as possible, the outer end portion of the overhanging portion 63 of each of the five virtue support members 6 on which the seating portion 54 of each of the five virtue claws 52 is seated is more radially outward than the cover ring 7. It is located in the direction.

  As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to this. For example, in the above-described embodiment, the curved convex surface portion 39 is formed on the upper surface of the burner 3, but the convex surface portion 39 may be formed in a weight shape such as a cone or a quadrangular pyramid. In addition, the virtues 5 are made unbalanced by making the weights of some of the virtues claw 52 different from the weights of the other virtues so that the virtues 5 can be quickly tilted in the wrong setting state. You may do it.

  Moreover, in the said embodiment, although the virtues support member 6 is formed in the bending shape which has the circular-arc-shaped part 62, it is a fastening part with respect to the burner 3 on the extension line to the radial inside of the overhang | projection part 63 of the virtues support member 6 It is also possible to use a straight-shaped Gotoku support member provided with. Further, when the cover ring 7 is provided, a plurality of bosses bulging upward are formed on the outer periphery of the cover ring 7 with a circumferential interval equal to the circumferential arrangement pitch of the five virtue claws 52. The seats 54 of the five virtue claws 52 may be seated on the part. In this case, a virtues support member is comprised by each boss | hub part.

  Further, in the above embodiment, the engagement portion 64 made of the protrusion that engages with the hole 55 formed in the seat portion 54 of the virtuosity claw 52 is formed on the virtues support member 6, but the protrusion is formed on the lower surface of the seat portion 54. And it is also possible to form the engaging part which consists of the hole which this protrusion engages with the five virtue support member 6. Furthermore, in the above embodiment, the flameless hole portion 35 is provided in the burner 3 with a circumferential interval equivalent to the circumferential arrangement pitch of the five virtue claws 52, but instead of the flameless hole portion 35, a small flame hole is provided. You may provide the small flame hole part which formed.

  Further, the weight of a part of the plurality of five virtue claws 52 of the five virtues 5 is made different from the weight of the other five virtue claws, so that the five virtues 5 are more easily tilted in an erroneous setting state.

The perspective view of the principal part of the gas stove of embodiment of this invention. Sectional drawing cut | disconnected by the II-II line | wire of FIG. The perspective view of the state which removed the burner body and five virtue of the gas stove of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Top plate, 2 ... Opening for burner, 3 ... Burner, 38 ... Umbrella part, 39 ... Convex part, 5 ... Gotoku, 51 ... Central joint part, 52 ... Gotoku nail, 53 ... Leg part, 54 ... Seating part, 56 ... Projection part, 6 ... Gotoku support member, 63 ... Overhang part, 64 ... Engagement part.

Claims (3)

A gas stove comprising a burner that protrudes upward from the top plate through a burner opening established in the top plate, and a virtue that has a plurality of virtues extending radially outward from a central joint located above the burner. In the case where legs extending downward are formed at the radially outer ends of the five virtue claws,
On the top plate, the five virtue support members on which the seats at the lower ends of the leg portions of the five virtue claws are seated at a predetermined distance higher than the upper surface of the top plate have a circumferential interval equivalent to the circumferential arrangement pitch of the five virtue claws. Multiple placement,
At least two of the five virtue support members are provided with an engaging portion for engaging the seat of the corresponding virtue claw and restraining the virtue claw,
A protrusion is formed on the lower surface of the central connecting portion of the virtues, and a vertical interval shorter than the predetermined distance is provided at the lower end of the protruding portion on the upper surface of the burner with the seating portion of each virtuosity claw seated on each virtuosity support member. A gas stove having a curved surface or a weight-like convex surface portion having an apex facing each other.   Each of the five virtue support members is fastened to the burner, and an umbrella part is formed on the burner to cover the fastening part of the five virtue support members from above, and each of the five virtue support members projects radially outward in the radial direction of the umbrella part. It has a projecting portion whose circumferential width is equal to the circumferential width of the seat portion of each of the five virtue claws, and the seat portion of each virtue claw is seated on the upper surface of the outer end portion of the projecting portion of each of the five virtue support members. The gas stove according to claim 1.   An annular cover ring that closes a gap between the burner opening and the burner is provided, and each of the five virtue support members is mounted on the cover with the cover ring in a state where the plural virtue support members are placed on the cover ring. The gas stove according to claim 1 or 2, wherein the gas stove is tightened.

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