JP2019027669A - Gas cooking stove - Google Patents

Abstract

To secure secondary air outside a burner port without increasing a hole diameter of an insertion hole of a top plate or decreasing an outer diameter of a burner head in a gas cooking stove.SOLUTION: In a cooking stove burner 5 where a part above an insertion hole 4 of a top plate 3 is projected, there are provided a plurality of grooves 24d at least either on an upper surface of burner bodies 21, 22 having a mixing chamber 20a or a lower surface of the burner head 24 covering an upper surface opening of the mixing chamber in a radial shape, and a plurality of burner ports 25 which communicate with the mixing chamber and are open on an outer peripheral surface of the cooking stove burner are formed by mounting the burner head on the burner body. The burner body is separable up and down, and the upper body 22 is removable from an upper side of the top plate with respect to the lower side body 21. The upper side body is provided with a tapered projection 22a which protrudes outside in a radial direction from the outer periphery and whose diameter reduces to the upper burner port, and an outer diameter on a large diameter side of the projection is larger than a hole diameter of the insertion hole.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a gas stove in which an upper portion of a stove burner is protruded from an insertion hole formed in a top plate that covers an upper surface of a stove body.

  In a gas stove, there is known a structure in which a stove burner is installed in a stove body, an insertion hole is formed in a top plate that covers the upper surface of the stove body, and an upper portion of the stove burner is projected from the insertion hole (for example, Patent Literature 1). The stove burner extends from the burner body having a mixing chamber to which a mixed gas of fuel gas and primary air is supplied, a burner head mounted on the burner body and covering the upper surface opening of the mixing chamber, and the burner body. And a mixing pipe for mixing the fuel gas and the primary air into the mixing chamber. The lower surface of the burner head (the contact surface with the burner body) is provided with a plurality of grooves radially with respect to the center of the burner head. When the burner head is placed on the burner body, the burner head communicates with the mixing chamber. A plurality of flame holes are formed in the outer peripheral surface of the head. The mixed gas supplied to the mixing chamber is ejected from the flame hole, and when ignited by the spark plug, combustion of the mixed gas is started and the cooking container such as a pan placed above the stove burner is heated.

JP 2008-249178 A

  However, in such a gas stove, secondary air supplied from the outside of the flame hole is necessary for the combustion of the mixed gas. When the hole diameter of the insertion hole and the outer diameter of the burner head are reduced along with the compaction of the gas stove, There has been a problem that secondary air may be insufficient due to a narrow interval between the flame holes. Therefore, as a structure for securing the secondary air, for example, it is considered that the outer peripheral surface of the burner body is formed in a tapered shape with a diameter decreasing toward the burner head, and the secondary air is guided to the flame hole along the tapered surface. However, in order to form a taper shape, it is necessary to increase the diameter of the insertion hole or to decrease the outer diameter of the burner head.

  The present invention has been made in response to the above-mentioned problems of the prior art, and it is possible to increase the outside diameter of the flame hole without increasing the diameter of the insertion hole of the top plate or decreasing the outer diameter of the burner head. The purpose is to provide a gas stove that can secure secondary air.

In order to solve the above-described problems, the gas stove of the present invention employs the following configuration. That is,
In a gas stove where a stove burner is installed in a stove body, and an upper portion of the stove burner is protruded from an insertion hole formed in a top plate covering the top surface of the stove body.
The stove burner is
A burner body having a mixing chamber to which a mixed gas of fuel gas and primary air is supplied;
A burner head mounted on the burner body and covering an upper surface opening of the mixing chamber;
A mixing pipe extending from the burner body and guiding the fuel gas and the primary air to the mixing chamber while mixing the fuel gas, and at least one of a lower surface of the burner head and an upper surface of the burner body. A plurality of grooves are provided radially, and when the burner head is placed on the burner body, a plurality of grooves that communicate with the mixing chamber and open to at least one outer peripheral surface of the burner head and the burner body are provided. A flame hole is formed,
The burner body is configured to be split up and down, and the upper body in contact with the burner head is detachable from the upper side of the top plate with respect to the lower body connected to the mixing tube,
The upper body is provided with a taper-shaped protruding portion that protrudes radially outward from the outer periphery and decreases in diameter toward the upper flame hole, and the outer diameter on the large-diameter side of the protruding portion is the insertion hole. It is characterized by being larger than the hole diameter.

  In such a gas stove of the present invention, ambient air can be guided to the flame hole along the tapered surface of the protrusion by convection during the combustion of the mixed gas ejected from the flame hole. Therefore, even when the interval between the flame holes is narrowed, secondary air can be secured outside the flame holes. The burner body is configured to be divided into a lower body and an upper body, and the upper body having a protrusion is detachable from the upper side of the top plate, so that the hole diameter of the insertion hole can be increased or the burner head Secondary air can be secured without reducing the outer diameter of the.

  The tapered protrusion of the upper body has an outer diameter on the large diameter side that is larger than the hole diameter of the insertion hole of the top plate, and covers the upper part of the gap between the top plate and the burner body (lower body). be able to. For this reason, even if it simmers from the cooking container placed above the stove burner, it becomes possible to prevent the spilled juice from entering the gap.

  On the upper surface of the top plate in the gas stove of the present invention described above, a ridge protruding in an annular shape surrounding the insertion hole may be provided at a position inside the outer edge of the protruding portion of the upper body.

  In this way, the boiled juice that has flowed down to the outside of the top plate ridge along the taper surface of the protrusion is blocked by the ridge, so the gap between the top plate and the burner body (lower body) It is possible to suppress the infiltration of the spilled juice into the juice. In addition, when removing the upper body for cleaning, it is possible to prevent boiled spilled juice or the like accumulated on the top plate from entering the inside of the stove body from the insertion hole.

  The protruding portion of the upper body in the gas stove of the present invention may be provided with a contact portion that contacts the upper surface side of the top plate.

  In this way, the weight of the upper body and the burner head can be supported by the top plate, so the lower body does not need rigidity to support the weight of the upper body and the burner head. Further, the heat of the upper body can be transmitted to the top plate and escaped when the mixed gas ejected from the flame hole is burned. By reducing the temperature of the upper body in this manner, it is possible to suppress the burning of the spilled juice on the upper body and facilitate the removal of dirt.

  Moreover, you may provide the thermal radiation part which dissipates heat in the lower surface of the top plate in the gas stove of this invention mentioned above.

  In this way, the heat transmitted from the upper body to the top plate can be dissipated by the heat radiating portion, so that the temperature of the upper body can be further reduced.

  Further, the top plate in the gas stove of the present invention has a top plate in which an opening having a larger diameter than the insertion hole is formed, and a burner ring that covers the opening of the top plate and in which the insertion hole is formed. May be.

  If it does in this way, it will become possible to change material by the top plate and burner ring of a top plate. And, for example, even if the top plate is made of glass with poor thermal conductivity, if the burner ring is formed of a material having excellent thermal conductivity such as an aluminum alloy and the upper body is in contact with the burner ring, The heat of the upper body can be released to the burner ring to reduce the temperature of the upper body.

It is the perspective view which showed the external appearance of the gas stove 1 of a present Example. It is the perspective view which showed the state which decomposed | disassembled the upper part of the stove burner 5 of a present Example. It is the longitudinal cross-sectional view which showed the internal structure of the stove burner 5 of a present Example. It is the longitudinal cross-sectional view which illustrated the gas stove 1 of the prior art example in which secondary air may run short. It is the longitudinal cross-sectional view which expanded and showed the part which the stove burner 5 protruded from the insertion hole 4 of the top plate 3 with the gas stove 1 of a present Example. It is explanatory drawing which showed the structure of the gas stove 1 of a modification.

  FIG. 1 is a perspective view showing the appearance of the gas stove 1 of the present embodiment. The illustrated gas stove 1 is a built-in type that is installed in a receiving space that opens in a countertop of a system kitchen (not shown), and has a box-shaped stove body 2 that is accommodated in the accommodating space, and an upper surface of the stove body 2. And a top plate 3 to be installed.

  Two stove burners 5 for burning fuel gas are installed on the left and right sides of the stove main body 2, and the upper portion of the stove burner 5 projects on the top plate 3. As will be described in detail later, an insertion hole is formed in the top plate 3, and in the gas stove 1 of this embodiment, it is possible to disassemble and care for the upper part of the stove burner 5 protruding from the insertion hole. Yes. Further, on the top plate 3, five victories 6 for placing a cooking container such as a pan are placed around the stove burner 5 above the stove burner 5.

  A grill door 7 is provided on the front surface of the gas stove 1 so that the front of the grill built in the stove body 2 can be opened and closed. On the right side of the grill door 7, there is provided a stove operation button 8 corresponding to each of the two stove burners 5, which is operated by the user when igniting, extinguishing, or adjusting the thermal power. On the left side of the grill door 7, a grill operation button 9 is provided that is operated by the user when the grill is ignited or extinguished, or when the heating power is adjusted.

  FIG. 2 is a perspective view showing a state where the upper part of the stove burner 5 of the present embodiment is disassembled. As described above, the top plate 3 is formed with the insertion hole 4 through which the upper portion of the stove burner 5 protrudes. The top plate 3 of the present embodiment is engraved on the surface of the metal plate (glassy coating), and an annular raised portion 3 a that is raised upward is formed around the insertion hole 4. The virtues 6 (not shown in FIG. 2) are detachably installed so as to surround the outside of the raised portion 3a. By providing the raised portion 3 a around the insertion hole 4, it is possible to make it difficult for the simmered juice to enter the inside of the stove main body 2 from the insertion hole 4 even if it is simmered from the cooking container placed in the Gotoku 6. Further, the protruding portion 3a is provided with a protrusion 3b that surrounds the insertion hole 4 and protrudes in an annular shape.

  The stove burner 5 is mounted on the burner body 20 having an annular mixing chamber to which a mixed gas of fuel gas and primary air is supplied as will be described later, and the upper surface opening of the mixing chamber mounted on the burner body 20. A burner head 24 to be covered, an annular burner cover 26 installed above the burner head 24, and the like are provided. Further, the stove burner 5 is provided with a temperature sensor 11 that protrudes from the central through hole 26 a of the burner cover 26 and contacts the lower surface of the cooking container on the virtues 6.

  The burner body 20 according to the present embodiment is configured to be vertically divided, and is installed in the stove main body 2 with respect to the lower body 21 whose upper end is located inside the insertion hole 4. An annular upper body 22 is detachable from the upper side. Since the upper body 22 has a protruding portion 22a that protrudes radially outward from the outer periphery, the outer diameter is larger than that of the lower body 21, and the protruding portion 22a has a taper that decreases in diameter upward. The outer diameter on the large diameter side (the lower end side in the drawing) is larger than the hole diameter of the insertion hole 4.

  The burner head 24 is formed in an annular shape, and a cylindrical outer peripheral wall 24a extends from the outer edge portion downward. Further, the burner head 24 has a cylindrical inner peripheral wall 24b that extends from the inner edge portion longer than the outer peripheral wall 24a and extends downward, and the temperature sensor 11 is inserted inside the inner peripheral wall 24b. A plurality of grooves 24 d are formed radially with respect to the center of the burner head 24 on the lower surface of the outer peripheral wall 24 a of the burner head 24 (the surface placed on the upper body 22).

  FIG. 3 is a longitudinal sectional view showing the internal structure of the stove burner 5 of this embodiment. As described above, the burner body 20 of this embodiment is configured to be divided into the lower body 21 and the upper body 22. Among these, the lower body 21 is formed by pressing two sheets of metal sheets (outer surface plate 21a and inner surface plate 21b) formed by pressing a thin plate of stainless steel or the like so that the outer body 21a and the outer surface plate 21a are bonded to each other. An annular mixing chamber 20a is formed between the inner surface plate 21b and the upper end portion of the outer surface plate 21a is located inside the insertion hole 4 (see FIG. 2).

  Further, a mixing tube 23 that communicates with the mixing chamber 20 a is extended from the lower body 21. An injection nozzle 29 connected to a gas passage 28 for supplying fuel gas is installed at the opening end 23a of the mixing pipe 23. When the fuel gas is injected from the injection nozzle 29, the mixing pipe 23 is sucked in while sucking primary air. 23. Then, the fuel gas and the primary air are supplied to the mixing chamber 20a through the mixing pipe 23 while being mixed.

  On the other hand, the upper body 22 is formed in an annular shape by casting or die casting using a metal material such as an aluminum alloy or brass. The upper body 22 is connected to the upper end portion of the outer surface plate 21a of the lower body 21 from the upper side of the top plate 3, and constitutes the upper portion on the outer peripheral side of the mixing chamber 20a.

  The burner head 24 is formed in an annular shape by casting or die casting using a metal material such as an aluminum alloy or brass. As described above, the outer peripheral wall 24a extends from the outer edge portion, and the inner edge portion. An inner peripheral wall 24b extends from the end. When the burner head 24 is placed on the burner body 20, the lower surface of the outer peripheral wall 24 a is brought into contact with the upper surface of the upper body 22 with the inner peripheral wall 24 b fitted to the inner surface plate 21 b of the lower body 21.

  When the burner head 24 is placed on the burner body 20 (upper body 22), the upper surface opening of the mixing chamber 20a is covered, a plurality of grooves 24d formed on the lower surface of the outer peripheral wall 24a of the burner head 24, and the upper body A plurality of flame holes 25 communicating with the mixing chamber 20 a and opening on the outer peripheral surface of the burner head 24 are formed by the upper surface of 22. The mixed gas of the fuel gas and the primary air supplied to the mixing chamber 20a is ejected from the plurality of flame holes 25, and when a spark is blown off by an ignition plug (not shown), the combustion of the mixed gas is started, and the cooking container on the Gotoku 6 Heat.

  Above the burner head 24, an annular burner cover 26 is fixed by a mounting bracket (not shown). The burner cover 26 prevents the boiled spilled juice from being applied to the burner head 24 when spilled from a cooking container on Gotoku 6. A support pole 12 having the temperature sensor 11 attached to the upper end is inserted inside the inner peripheral wall 24 b of the burner head 24, and the upper portion of the temperature sensor 11 protrudes from the through hole 26 a of the burner cover 26. The temperature sensor 11 is biased upward by a biasing spring (not shown), and the upper end of the temperature sensor 11 abuts on the lower surface of the cooking container placed on the virtues 6 to detect the temperature of the cooking container.

  Here, as described above, in the gas stove 1 in which the mixed gas of the fuel gas and the primary air is ejected from the plurality of flame holes 25 and burned, the gas is supplied from the outside of the flame hole 25 in order to appropriately burn the mixed gas. Secondary air is required. However, if the outer diameter of the burner head 24 is reduced as the gas stove 1 becomes more compact, the interval between the flame holes 25 becomes narrower, making it difficult to secure secondary air. Therefore, in the gas stove 1 of the present embodiment, the burner body 20 is configured to be divided into the lower body 21 and the upper body 22, and the protruding portion 22 a is provided on the upper body 22, thereby the flame hole 25. Secondary air can be secured on the outside. In the following, this point will be described, but as a comparison, the conventional gas stove 1 in which secondary air may be insufficient will be described first.

  FIG. 4 is a vertical cross-sectional view illustrating a conventional gas stove 1 in which secondary air may be insufficient, and shows an enlarged portion where the stove burner 5 protrudes from the insertion hole 4 of the top plate 3. In addition, in FIG. 4, illustration of the five virtue 6, the burner cover 26, and the temperature sensor 11 is abbreviate | omitted. Unlike the above-described embodiment, the burner body 20 shown in the figure is configured so as not to be divided, and extends from the insertion hole 4 of the top plate 3 by extending the outer surface plate 21a of the lower body 21 in the above-described embodiment. It has a protruding shape, and an upper surface is formed by bending the upper end side protruding from the insertion hole 4 inward. The lower surface of the outer peripheral wall 24a of the burner head 24 abuts on this upper surface to form a flame hole 25.

  In such a conventional gas stove 1, if it becomes difficult to obtain secondary air from the circumferential direction of the burner head 24 by narrowing the interval between the flame holes 25, the secondary gas is formed from below the flame holes 25 (on the burner body 20 side). I need to get air. On the outer side in the radial direction of the burner body 20, a flow of air that rises by convection during combustion of the mixed gas ejected from the flame hole 25 (ascending airflow) can occur, but the burner that protrudes from the insertion hole 4 of the top plate 3 The outer peripheral surface of the body 20 stands upright with respect to the upper surface of the top plate 3, and the air flow flowing from the surroundings into the rising air flow along the upper surface of the top plate 3 collides with the outer peripheral surface of the burner body 20. The upward airflow toward the flame hole 25 tends to stagnate. As a result, secondary air necessary for combustion of the mixed gas ejected from the flame hole 25 may not be sufficiently obtained. In addition, the dashed-dotted arrow in the figure represents the flow of air.

  Further, the hole diameter of the insertion hole 4 of the top plate 3 is set larger than the outer diameter of the burner body 20 including the intersection in order to allow the burner body 20 to be inserted. Therefore, there is always a gap between the top plate 3 and the burner body 20 with the upper portion of the burner body 20 protruding from the insertion hole 4. And when it is simmered from the cooking container placed in Gotoku 6, the simmered juice may enter the gap.

  On the other hand, FIG. 5 is an enlarged longitudinal sectional view showing a portion where the stove burner 5 protrudes from the insertion hole 4 of the top plate 3 in the gas stove 1 of the present embodiment. In addition, in FIG. 5, illustration of the five virtue 6, the burner cover 26, and the temperature sensor 11 is abbreviate | omitted. As described above, in the gas stove 1 according to the present embodiment, the upper body 22 on which the burner head 24 is placed is provided with the protruding portion 22a that protrudes radially outward from the outer periphery. It is formed in a taper shape with a diameter decreasing toward the flame hole 25.

  In such a gas stove 1 of the present embodiment, by the convection at the time of combustion of the mixed gas ejected from the flame hole 25, the surrounding air is drawn along the tapered surface of the protrusion 22a as shown by the one-dot chain line arrow in the figure. It can be guided to the flame hole 25. Therefore, even when the interval between the flame holes 25 is narrowed, it is possible to secure secondary air necessary for combustion of the mixed gas ejected from the flame holes 25.

  In the gas stove 1 of the conventional example shown in FIG. 4, when the outer peripheral surface of the burner body 20 is to be tapered as in this embodiment, the insertion hole is used to project the burner body 20 from the insertion hole 4. 4 needs to be increased, or the outer diameter of the burner head 24 must be reduced. On the other hand, in the gas stove 1 of the present embodiment, the burner body 20 is configured to be divided into the lower body 21 and the upper body 22, and the upper body 22 having the protruding portion 22 a is formed from the upper side of the top plate 3. Since it is detachable, secondary air can be secured outside the flame hole 25 without increasing the hole diameter of the insertion hole 4 or decreasing the outer diameter of the burner head 24.

  The tapered protrusion 22a of the upper body 22 has a larger outer diameter than the diameter of the insertion hole 4 of the top plate 3, and the top plate 3 and the burner body 20 (lower body 21). It covers the upper part of the gap. Therefore, even if it is simmered from the cooking container on Gotoku 6, it is possible to prevent the spilled juice from entering the gap.

  In addition, the top plate 3 of this embodiment is provided with a ridge 3b that protrudes in an annular shape surrounding the insertion hole 4, and this ridge 3b is located on the inner side of the outer edge of the protrusion 22a of the upper body 22. Is located. As a result, the boiled juice that has flowed down to the outside of the protrusion 3b of the top plate 3 along the tapered surface of the protrusion 22a is blocked by the protrusion 3b, so that the top plate 3 and the burner body 20 (the lower body 21) are blocked. ) Can be prevented from entering the spilled juice. Further, if the top plate 3 is provided with the protrusion 3b, even when the upper body 22 is removed for cleaning, boiled juice accumulated on the top plate 3 (the raised portion 3a) can be removed from the insertion hole 4. It can suppress entering the inside of the main body 2. In the present embodiment, the protrusion 3 b is provided at the edge of the insertion hole 4, but it is not necessarily the edge of the insertion hole 4, and is inside the outer edge of the protrusion 22 a of the upper body 22. I just need it.

  Further, in the upper body 22 of the present embodiment, the protruding portion 22a protrudes from the lower end of the flame hole 25 (the upper end of the upper body 22) and has a tapered shape that increases in diameter toward the top plate 3, and the burner body 20 Since the boiled spilled juice (tapered surface of the protruding portion 22a) flows down to the top plate 3, the boiled squeezed juice can be prevented from entering the flame hole 25.

  Furthermore, the upper body 22 of the present embodiment has an annular recess 22b formed on the lower surface of the protrusion 22a (the surface facing the lower body 21), and the protrusion 3b of the top plate 3 and the lower portion are formed in the recess 22b. The upper end portion of the side body 21 is accommodated and comes into contact with the upper surface of the top plate 3 (the raised portion 3a) outside the recess 22b on the lower surface. Thereby, since the weight of the upper body 22 and the burner head 24 can be supported by the top plate 3, the lower body 21 does not need rigidity to support the weight of the upper body 22 and the burner head 24. In addition, the part (outside the dent 22b on the lower surface) that contacts the upper surface of the top plate 3 in the protruding portion 22a of the present embodiment corresponds to the “contact portion” of the present invention. Moreover, the part which contact | abuts to the upper surface of the top plate 3 by the protrusion part 22a does not necessarily need to be the perimeter of the protrusion part 22a, and should just contact | abut at least one part among the perimeters.

  Further, if the upper body 22 is brought into contact with the top plate 3, the heat of the upper body 22 can be transmitted to the top plate 3 and escaped during combustion of the mixed gas ejected from the flame hole 25. By reducing the temperature of the upper body 22 in this way, it becomes possible to suppress the burning of the boiled juice applied to the upper body 22 and facilitate the removal of dirt. In addition, if the heat of the upper body 22 is transmitted to the mixing tube 23 via the lower body 21 and the mixing tube 23 becomes hot, the internal pressure of the mixing tube 23 increases and the primary air may be insufficiently sucked. By reducing the temperature of the upper body 22, heat transfer to the mixing tube 23 can be suppressed.

  The gas stove 1 of the present embodiment described above includes the following modifications. In the following, modifications will be described focusing on differences from the above-described embodiment. In the description of the modified example, the same components as those in the above-described embodiment are denoted by the same reference numerals and description thereof is omitted.

  FIG. 6 is an explanatory view showing the structure of a gas stove 1 according to a modification. First, FIG. 6A shows a modified top plate 3 in a perspective view. As shown in the drawing, the top plate 3 of the modified example is not a single member but covers the top plate 30 in which the opening 30a having a larger diameter than the insertion hole 4 from which the combustor 5 protrudes, and the opening 30a. And a burner ring 31 in which the insertion hole 4 is formed. The top plate 30 and the burner ring 31 can be made of different materials. For example, the top plate 30 made of glass and the burner ring 31 made of aluminum alloy can be combined.

  FIG. 6B is a longitudinal sectional view of the gas stove 1 according to the modification, in which the portion where the stove burner 5 protrudes from the insertion hole 4 of the top plate 3 (burner ring 31) is enlarged. As shown in the drawing, the top plate 30 and the burner ring 31 are joined in a liquid-tight manner by interposing a packing 32 formed annularly with a graphite sheet or the like therebetween.

  The burner ring 31 is provided with a ridge 31a projecting in an annular shape surrounding the insertion hole 4, and the upper surface of the burner ring 31 is inclined downward from the inside toward the outside. The burner ring 31 and the upper body 22 are in contact with each other between the upper surface of the protrusion 31a and the bottom surface of the recess 22b. The bottom surface of the recess 22b in the upper body 22 of the modification corresponds to the “contact portion” of the present invention. In addition, an annular heat radiating cylinder 31 b that is inserted through the opening 30 a of the top plate 30 is provided on the lower surface of the burner ring 31. The heat radiating cylinder 31 b is made of a material having excellent thermal conductivity such as an aluminum alloy and is in contact with a heat radiating plate 33 installed on the lower surface side of the top plate 30.

  Also in the gas stove 1 of such a modification, the surrounding air can be guided to the flame hole 25 along the tapered surface of the protrusion 22a, as in the above-described embodiment. Secondary air can be secured. Further, the protruding portion 22a of the upper body 22 covers the upper portion of the gap between the burner ring 31 and the lower body 21, and the spilled juice applied to the upper body 22 is formed on the tapered surface of the protruding portion 22a and the burner ring 31. Since it flows down to the top plate 30 along the upper surface, it is possible to prevent the boiled juice from entering the gap between the burner ring 31 and the lower body 21.

  Further, since the upper body 22 is in contact with the burner ring 31, the weight of the upper body 22 and the burner head 24 can be supported by the top plate 3 (top plate 30 and burner ring 31), and the upper body 22 Heat can be transferred to the burner ring 31 to escape. Since the heat transmitted to the burner ring 31 can be dissipated by the heat radiating cylinder 31b and the heat radiating plate 33, the temperature of the upper body 22 can be further reduced. Note that the heat radiating cylinder 31b and the heat radiating plate 33 of the modification correspond to the “heat radiating portion” of the present invention.

  Although the gas stove 1 of the present embodiment and the modification has been described above, the present invention is not limited to the above-described embodiment and the modification, and can be implemented in various modes without departing from the gist thereof. is there.

  For example, in the gas stove 1 of the above-described embodiment, a heat radiating part (heat radiating cylinder 31b or heat radiating plate 33) for radiating heat as in the modified example may be provided on the lower surface of the top plate 3, so that Since the heat transmitted from the upper body 22 to the top plate 3 can be dissipated by the heat radiating portion, the temperature of the upper body 22 can be further reduced.

  Moreover, in the gas stove 1 of the modified example described above (see FIG. 6B), the upper body 22 and the burner ring 31 may be provided integrally. In this case, the opening 30a of the top plate 30 corresponds to the “insertion hole” of the present invention. The outer edge of the burner ring 31 provided integrally with the upper body 22 corresponds to the “projection” of the present invention.

  Further, in the above-described embodiment, the plurality of grooves 24d are formed radially on the lower surface of the outer peripheral wall 24a of the burner head 24. However, the plurality of grooves may be formed radially on the upper surface of the upper body 22. . In this case, when the burner head 24 is placed on the upper body 22, an opening is formed in the outer peripheral surface of the upper body 22 by the lower surface of the outer peripheral wall 24 a of the burner head 24 and a plurality of grooves formed on the upper surface of the upper body 22. Since the plurality of flame holes 25 to be formed are formed, the tapered protrusions 22a of the upper body 22 may be protruded from the positions of the lower ends of the plurality of grooves. A plurality of grooves may be formed radially on both the lower surface of the outer peripheral wall 24 a of the burner head 24 and the upper surface of the upper body 22. When grooves are provided on both sides, by reducing the depth of the grooves, it becomes possible to facilitate cleaning of the grooves when removing and cleaning the burner head 24.

1 ... gas stove, 2 ... stove body, 3 ... top plate,
3a ... protuberance, 3b ... ridge, 4 ... insertion hole,
5 ... Comrobana, 6 ... Gotoku, 7 ... Grill door,
8 ... Stove operation button, 9 ... Grill operation button, 11 ... Temperature sensor,
12 ... support pole, 20 ... burner body, 20a ... mixing chamber,
21 ... Lower body, 21a ... Outer plate, 21b ... Inner plate,
22 ... Upper body, 22a ... Projection, 23 ... Mixing tube,
23a ... Open end, 24 ... Burner head, 24a ... Outer wall,
24b ... inner peripheral wall, 24d ... groove, 25 ... flame hole,
26 ... Burner cover, 26a ... Through hole, 28 ... Gas passage 29 ... Injection nozzle, 30 ... Top plate, 30a ... Opening,
31 ... Burner ring, 31a ... Projection, 31b ... Radiation tube,
32 ... packing, 33 ... heat sink.

Claims (5)

In a gas stove where a stove burner is installed in a stove body, and an upper portion of the stove burner is protruded from an insertion hole formed in a top plate covering the top surface of the stove body.
The stove burner is
A burner body having a mixing chamber to which a mixed gas of fuel gas and primary air is supplied;
A burner head mounted on the burner body and covering an upper surface opening of the mixing chamber;
A mixing pipe extending from the burner body and guiding the fuel gas and the primary air to the mixing chamber while mixing the fuel gas, and at least one of a lower surface of the burner head and an upper surface of the burner body. A plurality of grooves are provided radially, and when the burner head is placed on the burner body, a plurality of grooves that communicate with the mixing chamber and open to at least one outer peripheral surface of the burner head and the burner body are provided. A flame hole is formed,
The burner body is configured to be split up and down, and the upper body in contact with the burner head is detachable from the upper side of the top plate with respect to the lower body connected to the mixing tube,
The upper body is provided with a taper-shaped protruding portion that protrudes radially outward from the outer periphery and decreases in diameter toward the upper flame hole, and the outer diameter on the large-diameter side of the protruding portion is the insertion hole. A gas stove characterized by being larger than the hole diameter. The gas stove according to claim 1, wherein
On the upper surface of the top plate, a protrusion protruding in an annular shape surrounding the insertion hole is provided at a position inside the outer edge of the protruding portion of the upper body. The gas stove according to claim 1 or 2,
A gas stove, wherein the protruding portion of the upper body is provided with a contact portion that contacts the upper surface side of the top plate. The gas stove according to claim 3, wherein
A gas stove characterized in that a heat radiating part for radiating heat is provided on the lower surface of the top plate. In the gas stove according to any one of claims 1 to 4,
The top plate includes a top plate in which an opening having a larger diameter than the insertion hole is formed, and a burner ring that covers the opening and in which the insertion hole is formed.

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