Gas cooking stove, and protective cover for cooking stove burner mounted on gas cooking stove

Abstract

To suppress damage to an upper part of a burner body as a top plate is installed on a cooking stove body.SOLUTION: A cooking stove burner is composed of a burner body 41 which is fixed inside a cooking stove body and whose upper part is inserted in an insertion hole and exposed above the top plate, and a burner head 43 removably mounted on the burner body on condition that an upper part of a cooking stove burner 40 protrudes above the top plate through the insertion hole with the top plate installed on the cooking stove body. Also, there is provided a protective cover 60 that is fitted by covering the upper part of the burner body and is freely removable with the burner head removed. The protective cover is fitted when at least the top plate is installed. The protective cover is provided with: an upper surface part 62 covering the upper surface of the burner body; and an outer peripheral part 61 covering an upper outer periphery of the burner body. The upper surface part is provided with a prevention part 63 preventing the burner head from being mounted on the burner body with the protective cover fitted to the burner body.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present invention relates to a gas stove in which the top plate is installed to cover the top surface of the box-shaped stove body, and the top of the stove burner mounted on the stove body protrudes above the top plate through an insertion hole, and more specifically, to a technology for protecting the top of the stove burner when the top plate is installed. [Background technology]

[0002] A commonly known gas stove has a through-hole that penetrates the top plate that covers the top surface of the box-shaped stove body, and the top of the stove burner mounted on the stove body protrudes above the top plate through the through-hole. Also, built-in gas stoves that are integrated into the worktop of a system kitchen are widespread, and when installed, the stove body is fitted into a storage space opened in the worktop, and then the top plate is attached to cover the top of the stove body (for example, Patent Document 1).

[0003] The burner mounted on such a gas stove typically comprises a burner body having a mixing chamber to which a mixture of fuel gas and air is supplied, and a burner head that is mounted on the burner body and covers the upper opening of the mixing chamber. The burner head is detachable from the burner body, which is fixed inside the stove body. When the burner head is mounted on the burner body, multiple flame ports that communicate with the mixing chamber are defined on the outer periphery of the burner head, and the mixed gas supplied to the mixing chamber flows out from the flame ports, so that combustion of the mixed gas begins when ignited. The upper part of the burner body is inserted into an insertion hole and is exposed above the top plate, and the burner head is removed from the burner body when the top plate is installed on the stove body. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2018-169087 Summary of the Invention [Problem to be solved by the invention]

[0005] However, with the conventional gas stoves described above, when the top plate is installed on the stove body and the top of the burner body is passed through the insertion hole, there is a problem that the top of the burner body may be scratched due to contact with the periphery of the insertion hole, etc. In particular, if the burner body has been subjected to a surface treatment such as painting, scratches caused by even light contact may be noticeable.

[0006] This invention has been made in response to the above-mentioned problems in conventional technology, and aims to provide technology that can prevent scratches from being made on the upper part of the burner body when the top plate is installed on the stove body of a gas stove. [Means for solving the problem]

[0007] In order to solve the above-mentioned problems, the gas stove of the present invention employs the following configuration: In a gas stove in which a top plate is installed to cover the top surface of a box-shaped stove body, and an upper part of a stove burner mounted on the stove body protrudes above the top plate through an insertion hole, The burner burner is composed of a burner body that is fixed inside the stove body, the upper part of which is inserted into the insertion hole and exposed above the top plate, and a burner head that is placed on the burner body to define a plurality of flame ports through which a mixed gas of fuel gas and air flows out and is detachable from the burner body. A protective cover is provided which is attached to cover the upper part of the burner body with the burner head removed and is detachable, and is in an attached state at least when the top plate is installed on the stove body; The protective cover has an upper surface portion that covers an upper surface of the burner body and an outer periphery portion that covers an upper outer periphery of the burner body, The upper surface is provided with a blocking portion that prevents the burner head from being placed on the burner body when the protective cover is attached to the burner body. It is characterized by:

[0008] According to the gas stove of the present invention, the upper surface and upper periphery of the burner body are covered by the upper surface and periphery of the protective cover, which prevents scratches on the upper part of the burner body due to contact with the periphery of the insertion hole when installing the top plate on the stove body. After installing the top plate on the stove body, if you try to install the burner head with the protective cover attached to the burner body, the installation is prevented by the blocking part of the protective cover, so it is possible to prevent forgetting to remove the protective cover.

[0009] The lower end of the outer periphery of the protective cover in the gas stove of the present invention described above may extend below the portion exposed upward from the insertion hole in the burner body when the top plate is installed on the stove body.

[0010] In this way, the area around the insertion hole does not come into direct contact with the outer periphery of the burner body until the top plate is completely installed on the stove body, making it possible to prevent scratches on the exterior (outer periphery) of the burner body.

[0011] The gas stove of the present invention may be configured as follows: First, a cylindrical peripheral wall extends downward from the outer edge of the burner head, and a mounting surface is provided on the upper surface of the burner body on which the lower end surface of the peripheral wall of the burner head rests. When the protective cover is attached to the burner body, the blocking portion located above the mounting surface and the mounting surface are at different angles relative to the horizontal.

[0012] In this way, the blocking portion of the protective cover and the mounting surface of the burner body are not parallel, so they are not in complete contact with each other and are at least partially separated. Therefore, even if an attempt is made to mount the burner head on the burner body with the protective cover attached, the lower end surface of the peripheral wall abuts against the portion of the blocking portion that is separated from the mounting surface, preventing the burner head from being mounted. This causes the burner head to float relative to the burner body, so the worker notices that the protective cover is still attached to the burner body and can prevent the worker from forgetting to remove the protective cover.

[0013] The gas stove of the present invention may also be configured as follows: First, the burner body is provided with an insertion portion into which a protrusion projecting downward from the burner head is inserted when the burner head is placed, and then, with the protective cover attached to the burner body, the blocking portion is positioned above the insertion portion.

[0014] In this way, if an operator attempts to place the burner head with the protective cover attached to the burner body, the protruding portion will hit the blocking portion and prevent insertion into the insertion portion, making the operator aware that the protective cover is still attached to the burner body, thereby preventing the operator from forgetting to remove the protective cover.

[0015] The gas stove of the present invention may also be configured as follows: First, a temperature sensor is attached to the upper end of a support pole installed in a central passage that vertically penetrates the burner body and burner head, and abuts against a cooking vessel placed above the stove burner to detect temperature. The upper surface of the protective cover is provided with a gap-forming portion that forms a gap that is wider than the outer diameter of the support pole but narrower than the outer diameter of the temperature sensor. This gap-forming portion is located below the temperature sensor when the protective cover is attached to the burner body, and is made of a flexible material that can bend and widen the gap when the temperature sensor is passed through the gap.

[0016] In this way, the gap forming portion catches on the lower end of the temperature sensor, preventing the protective cover from being easily detached from the burner body. On the other hand, when the temperature sensor is passed through the gap formed by the gap forming portion in connection with the attachment or detachment of the protective cover, the gap forming portion bends, preventing excessive load from being applied to the temperature sensor.

[0017] Furthermore, the upper surface of the protective cover in the gas stove of the present invention may be provided with a finger hook on which an operator can place their fingers when removing the protective cover from the burner body.

[0018] In this way, when removing the protective cover from the burner body, the worker simply places his or her finger on the finger grip portion of the protective cover and pulls it upward, making it easy to remove without the need for special tools.

[0019] The gas stove of the present invention may also be configured as follows: First, a burner ring is provided in an opening in the top plate so as to be movable parallel to the top plate, and has an insertion hole formed therein. Also, a top plate installation jig is provided which is detachably attached to the burner body from above with the burner head removed, and which aligns the center of the insertion hole with the center of the burner body when installing the top plate on the stove main body. When the top plate installation jig is attached from above to the burner body with the protective cover attached, the upper surface of the protective cover is interposed between the upper surface of the burner body and the top plate installation jig.

[0020] In this way, when installing the top plate on the stove body, the center of the insertion hole and the center of the burner body are aligned while moving the burner ring with the top plate installation jig, improving the workability of passing the upper part of the burner body through the insertion hole. Furthermore, since the upper surface of the protective cover is interposed between the upper surface of the burner body and the top plate installation jig, it is possible to prevent scratches on the upper surface of the burner body due to contact with the top plate installation jig.

[0021] In order to solve the above-mentioned problems, the protective cover of the present invention employs the following configuration: In a gas stove in which a top plate is installed covering the top surface of a box-shaped stove body and the top of the stove burner mounted on the stove body protrudes above the top plate through an insertion hole, the stove burner is composed of a burner body that is fixed inside the stove body and has an upper part that is inserted into the insertion hole and exposed above the top plate, and a burner head that is placed on the burner body to define multiple flame ports through which a mixture of fuel gas and air flows out and is detachable from the burner body, a protective cover that is attached to cover the top of the burner body when the burner head is removed and is detachable, and is in an attached state at least when the top plate is installed on the stove body, An upper surface portion covering the upper surface of the burner body and an outer periphery portion covering the upper outer periphery of the burner body, The upper surface portion is provided with a blocking portion that prevents the burner head from being placed on the burner body when the protective cover is attached to the burner body. It is characterized by:

[0022] When such a protective cover of the present invention is attached to the burner body, the upper surface and upper outer periphery of the burner body are covered by the upper surface and outer periphery of the protective cover, so that it is possible to prevent scratches on the upper part of the burner body due to contact around the insertion hole when installing the top plate on the stove body. Furthermore, if an attempt is made to install the burner head with the protective cover still attached to the burner body after installing the top plate on the stove body, the installation is prevented by the blocking part of the protective cover, so it is possible to prevent forgetting to remove the protective cover. [Brief explanation of the drawings]

[0023] [Figure 1] 1 is a perspective view showing a gas stove 10 of the present embodiment in an exploded state. [Figure 2] FIG. 2 is a vertical cross-sectional view showing the structure of the stove burner 40 of this embodiment. [Figure 3] 10 is an enlarged perspective view showing how an engagement spring 34 is inserted into an engagement hole 25 when attaching a top plate 30 to a stove body 20. FIG. [Figure 4] 2 is an explanatory diagram showing the structure of a top plate installation jig 50 of the present embodiment. FIG. [Figure 5] 3 is an explanatory diagram showing the shape of a protective cover 60 of the first embodiment. FIG. [Figure 6] 10 is a vertical cross-sectional view showing a case where a burner head 43 is placed on a burner body 41 with a protective cover 60 of the first embodiment attached thereto. FIG. [Figure 7] FIG. 10 is a perspective view showing the shape of a protective cover 60 of a second embodiment. [Figure 8] 10 is a perspective view showing a case where a burner head 43 is placed on a burner body 41 with a protective cover 60 of a second embodiment attached thereto. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0024] 1 is a perspective view showing an exploded state of a gas stove 10 of this embodiment. The gas stove 10 of this embodiment is a built-in type that is integrated into the worktop of a system kitchen (not shown), and includes a box-shaped stove body 20 with an open top, a top plate 30 that is installed to cover the top surface of the stove body 20, and the like.

[0025] A stove burner 40 that burns fuel gas is mounted inside the stove body 20. In the illustrated example, two stove burners 40 are arranged on the left and right. The stove body 20 also has a built-in grill 21 (not shown), and the front of the grill 21 can be opened and closed by a grill door 21d provided on the front of the stove body 20.

[0026] On the front of stove body 20, to the right of grill door 21d, there are provided stove operation buttons 22 that the user operates to ignite, extinguish, or adjust the heat, corresponding to each of two stove burners 40. On the other hand, to the left of grill door 21d, there is provided grill operation button 23 that the user operates to ignite, extinguish, or adjust the heat, for grill 21.

[0027] An outwardly bent flange 24 is formed on the upper outer edge of the stove body 20. When the stove body 20 is fitted into a storage space (not shown) that opens into the worktop of a system kitchen, the flange 24 is placed on the worktop (around the storage space).

[0028] Annular burner rings 31 are installed on the top plate 30 at positions facing the two stove burners 40. As will be described later, the burner rings 31 are movable parallel to the top plate 30, and are formed with insertion holes 31a through which the upper portions of the stove burners 40 protrude. In addition, an exhaust port 33 for discharging exhaust air from the grill 21 is opened at the rear of the top plate 30.

[0029] Engagement springs 34 for securing the top plate 30 to the stove body 20 are attached downward on the underside of the top plate 30, and in the illustrated example, two engagement springs 34 are provided on the left and right sides of the front side. Meanwhile, two engagement holes 25 are formed on the left and right sides of the front flange portion 24 (front flange portion 24f) of the stove body 20. As will be described in detail below, when attaching the top plate 30 to the stove body 20, the engagement springs 34 are inserted into the engagement holes 25 and the top plate 30 is placed on the stove body 20. Then, fixing screws 36 are passed through the through holes 35 formed on the left and right sides of the exhaust port 33 of the top plate 30, and the fixing screws 36 are screwed into the left and right screw holes 27 formed in the rear part of the flange portion 24 of the stove body 20, thereby securing the top plate 30 to the stove body 20.

[0030] On the top surface of the top plate 30, trivets 37 for placing cooking vessels such as pots above each of the two stove burners 40 are installed surrounding the burner rings 31. In addition, an exhaust port cover 38 is installed to cover the exhaust port 33 from above, and the fixing screws 36 mentioned above are hidden under the exhaust port cover 38.

[0031] 2 is a vertical cross-sectional view showing the structure of the stove burner 40 of this embodiment. The stove burner 40 includes a burner body 41 having an annular mixing chamber 41c formed therein, an annular burner head 43 placed on the burner body 41 and covering the upper opening of the mixing chamber 41c, and a temperature sensor 45 placed on the trivet 37 to detect the temperature of a cooking vessel placed above the burner head 43.

[0032] The burner body 41 of this embodiment is formed by facing and airtightly joining two metal sheets (an outer plate 41a and an inner plate 41b) formed by pressing thin plates such as stainless steel, to form an annular mixing chamber 41c between the outer plate 41a and the inner plate 41b. The upper end of the outer plate 41a is bent inward to form an annular mounting surface 41d, on which the burner head 43 is mounted. The upper part of the outer plate 41a protrudes upward from the insertion hole 31a of the burner ring 31 installed on the top plate 30. The burner body 41 is not limited to being made of metal sheet, and may be formed by casting (die casting) or the like.

[0033] The burner ring 31 is installed from above facing an opening 30a formed in the top plate 30, and the opening diameter of the opening 30a is smaller than the outer diameter of the burner ring 31 and larger than the inner diameter of the burner ring 31 (the diameter of the insertion hole 31a). In addition, a back plate 32 is arranged on the underside of the top plate 30, and the burner ring 31 and back plate 32 sandwich the top plate 30 from above and below and engage with each other through the opening 30a using an engagement mechanism (not shown), allowing the burner ring 31 to move parallel to the top plate 30 within a range corresponding to the opening 30a. Similar to the insertion hole 31a of the burner ring 31, an insertion hole 32a that passes through the upper part of the burner body 41 is also formed in the back plate 32, and the insertion hole 32a of the back plate 32 is larger than the insertion hole 31a of the burner ring 31. The diameter of the insertion hole 31a of the burner ring 31 is larger than the outer diameter of the burner body 41, and when the top plate 30 is attached to the stove main body 20 and the upper part of the burner body 41 is passed through the insertion hole 31a, the burner ring 31 is moved using a top plate installation jig as described below, and the center of the insertion hole 31a is aligned with the center of the burner body 41.

[0034] Furthermore, a mixing tube 42 that communicates with the mixing chamber 41c extends from the burner body 41. As indicated by the outline arrow in the figure, when fuel gas is injected toward the open end 42a of the mixing tube 42, it flows into the mixing tube 42 together with primary air for combustion that is drawn in from the surroundings. Then, the fuel gas and primary air passing through the mixing tube 42 are mixed, and the mixed gas is supplied to the mixing chamber 41c.

[0035] The burner head 43 is formed in an annular shape by casting or die-casting using an aluminum alloy or brass. A cylindrical peripheral wall 43a extends downward from the outer edge of the burner head 43, and a cylindrical fitting tube 43b extends downward from the inner edge, longer than the peripheral wall 43a. When placing the burner head 43 on the burner body 41, the fitting tube 43b is fitted inside a short cylindrical fitting surface 41e formed by folding the upper end side of the inner surface plate 41b of the burner body 41 downward, and the lower end surface of the peripheral wall 43a is abutted against an annular mounting surface 41d located around the upper opening of the mixing chamber 41c. This covers the upper opening of the mixing chamber 41c with the burner head 43. The burner head 43 is detachable from the burner body 41.

[0036] The lower end surface of the peripheral wall 43a of the burner head 43 (the surface that abuts against the mounting surface 41d) is provided with a plurality of radially extending grooves 43d spaced apart in the circumferential direction. In the cross-sectional view of FIG. 2, the right-hand peripheral wall 43a shows a cross section cut at the location of the grooves 43d, while the left-hand peripheral wall 43a shows a cross section cut at a location where the grooves 43d are not present. When the burner head 43 is placed on the burner body 41 and the lower end surface of the peripheral wall 43a abuts against the mounting surface 41d, the grooves 43d in the peripheral wall 43a and the mounting surface 41d define a plurality of flame ports 44 that communicate with the mixing chamber 41c. The mixed gas from the mixing chamber 41c flows out of these flame ports 44. When a spark is generated by an ignition plug (not shown), the mixed gas begins to burn, heating the cooking vessel on the trivet 37. In the illustrated example, the annular mounting surface 41d is inclined downward toward the inside in the radial direction, and accordingly, the lower end surface of the peripheral wall 43a is also inclined in the same manner.

[0037] The inside of the fitting tube 43b of the burner head 43 is a central passage 43c that passes through the stove burner 40 in the vertical direction, and a support pole 46 with a temperature sensor 45 attached to its upper end is installed in this central passage 43c. The temperature sensor 45 has a larger diameter than the support pole 46 and is biased upward by a biasing spring (not shown). The upper end of the temperature sensor 45 abuts against the underside of a cooking container placed on the trivet 37, detecting the temperature of the cooking container.

[0038] Figure 3 is an enlarged perspective view showing the insertion of the engagement spring 34 into the engagement hole 25 when attaching the top plate 30 to the stove body 20. Note that the figure shows the front side as seen from inside the stove body 20, and the top plate 30 is not shown. First, Figure 3(a) shows the state before the top plate 30 is attached to the stove body 20. As mentioned above, the engagement spring 34 is suspended from the underside of the top plate 30. The engagement spring 34 is a filigree spring formed by bending a metal wire into a roughly U-shape, and has an enlarged portion 34a near the center in the vertical direction that widens the width from side to side.

[0039] Meanwhile, an engagement hole 25 that is long in the left-right direction is formed in the front flange portion 24f of the stove body 20. Also, below the engagement hole 25, an insertion portion 26 is formed by making a left-right slit in the front panel 20a of the stove body 20 and protruding forward (toward the back in the figure).

[0040] As the engagement spring 34 is inserted into the engagement hole 25, the width of the widened portion 34a is wider than the insertion portion 26, so that the widened portion 34a comes into contact with both left and right ends of the insertion portion 26, bending the engagement spring 34 inward and narrowing the width of the widened portion 34a. Then, when the widened portion 34a passes through the insertion portion 26, the engagement spring 34 elastically returns, and the width of the widened portion 34a expands again. Therefore, as shown in Figure 3(b), the upper edge of the widened portion 34a engages with both left and right ends of the insertion portion 26, positioning the top plate 30 relative to the stove body 20.

[0041] The engagement spring 34 in this embodiment is rotatable by swinging its lower end back and forth around an axis on the upper end side relative to the top plate 30. Therefore, it is possible to insert the engagement spring 34 into the engagement hole 25 while tilting the top plate 30 from the horizontal position with the front side lowered, and then pass the upper part of the burner body 41 through the insertion hole 31a of the burner ring 31 while tilting the top plate 30 toward the rear. Alternatively, the engagement spring 34 may be inserted into the engagement hole 25 while keeping the top plate 30 horizontal, and the upper part of the burner body 41 may be passed through the insertion hole 31a of the burner ring 31. In either case, when passing the upper part of the burner body 41 through the insertion hole 31a of the burner ring 31, a top plate installation jig 50 is attached from above to the burner body 41 with the burner head 43 removed.

[0042] FIG. 4 is an explanatory diagram showing the structure of the top plate installation jig 50 of this embodiment. First, FIG. 4(a) shows a perspective view of the top plate installation jig 50 before it is attached to the burner body 41. As shown in the figure, the top plate installation jig 50 of this embodiment is made of two resin plates assembled so that they intersect at approximately right angles, forming a three-dimensional object with four-fold rotational symmetry about the vertical intersection line. The two plates are approximately identical in shape and roughly include a guide portion 51 formed on the upper part and whose outer width narrows toward the top, a leg portion 53 formed on the lower part and inserted into the burner body 41, and an accommodation portion 52 formed on the inside to accommodate the temperature sensor 45.

[0043] 4(b) shows a vertical cross section of the top plate installation jig 50 attached to the burner body 41. The guide part 51, whose outer width narrows toward the top, has an outer width (maximum width) at its lower end that is approximately the same as the outer diameter of the burner body 41 (external plate 41a). When the top plate installation jig 50 is attached to the burner body 41, the lower end surface of the guide part 51 rests on the upper surface (rest surface 41d) of the burner body 41.

[0044] The leg portions 53 inserted into the burner body 41 have an outer width narrower than the inner diameter of the mounting surface 41d of the burner body 41, and the outer width of the lower end is narrower than the inner diameter of the fitting surface 41e of the inner plate 41b. In addition, the outer shape of the lower end of the leg portions 53 is provided with protrusions 54 that protrude outward, and when the top plate installation jig 50 is attached to the burner body 41 and the lower end side of the leg portions 53 is inserted into the fitting surface 41e, the protrusions 54 engage with the lower end of the fitting surface 41e, preventing it from coming off.

[0045] If the top plate installation jig 50 is attached to the burner body 41 in this way, even if the center of the insertion hole 31a of the burner ring 31 is misaligned with the center of the burner body 41 when attaching the top plate 30 to the stove main body 20, as the tip side of the guide portion 51 of the top plate installation jig 50 is inserted into the insertion hole 31a, the outer edge of the guide portion 51 comes into contact with the inner edge of the burner ring 31 (around the insertion hole 31a), causing the burner ring 31 to move parallel to the top plate 30 along the outer shape of the guide portion 51. Furthermore, because the maximum width at the lower end side of the guide portion 51 is approximately the same as the outer diameter of the burner body 41, when the lower end side of the guide portion 51 is inserted into the insertion hole 31a, the alignment between the center of the insertion hole 31a and the center of the burner body 41 is nearly complete, and the upper part of the burner body 41 can be passed through the insertion hole 31a.

[0046] In the gas stove 10 of this embodiment, the top plate installation jig 50 is attached to the burner body 41 when shipped from the factory, but the timing of attaching the top plate installation jig 50 is not limited to this, and it is sufficient that the top plate installation jig 50 is attached to the burner body 41 at least when attaching the top plate 30 to the stove body 20. After attaching the top plate 30 to the stove body 20, the top plate installation jig 50 can be easily removed by pulling it out upward.

[0047] Using the top plate installation jig 50 in this manner improves the ease of passing the upper part of the burner body 41 through the insertion hole 31a of the burner ring 31. However, in order to minimize the gap between the insertion hole 31a and the burner body 41, it is difficult to make the maximum width of the lower end of the guide portion 51 larger than the outer diameter of the burner body 41. Therefore, the inner edge of the burner ring 31 (around the insertion hole 31a) may come into contact with the burner body 41, causing scratches on the exterior (outer surface) of the burner body 41. In particular, if the burner body 41 is subjected to a surface treatment such as painting, even scratches caused by light contact are noticeable. Furthermore, since the lower end surface of the guide portion 51 of the top plate installation jig 50 attached to the burner body 41 comes into contact with the upper surface (mounting surface 41d) of the burner body 41, scratches on the upper surface of the burner body 41 due to vibrations during transportation or the like may be caused by the top plate installation jig 50. Therefore, in the gas stove 10 of this embodiment, a protective cover 60 such as the one described below is attached to the burner body 41 to prevent scratches on the burner body 41 when the top plate 30 is installed on the stove main body 20.

[0048] 5 is an explanatory diagram showing the shape of the protective cover 60 of the first embodiment. First, FIG. 5(a) shows a perspective view of the protective cover 60 before it is attached to the burner body 41. As shown in the figure, the protective cover 60 of the first embodiment has an outer peripheral portion 61 that covers the upper outer periphery of the burner body 41 (external surface plate 41a) and an upper surface outer edge portion 62 that covers the outer edge portion of the upper surface of the burner body 41 (mounting surface 41d), and is made of a resin such as polyethylene terephthalate (PET) and is formed to be thin. The upper surface outer edge portion 62 of the first embodiment corresponds to the "upper surface portion" of the present invention.

[0049] The inner diameter of the outer periphery 61 of the protective cover 60 is slightly larger than the outer diameter of the burner body 41, and the inside of the upper surface outer edge 62 is open. Therefore, when attaching the protective cover 60 to the burner body 41, it is sufficient to pass the temperature sensor 45 inside the upper surface outer edge 62 and then place the protective cover 60 on top of the burner body 41. Furthermore, it is possible to attach the top plate installation jig 50, as described above, on top of the protective cover 60 attached to the burner body 41 (see FIG. 4).

[0050] 5(b) shows an enlarged longitudinal cross-sectional view of the burner body 41 with the protective cover 60 of the first embodiment attached. As shown in the figure, the outer periphery of the upper part of the burner body 41 and the mounting surface 41d are covered by the outer periphery 61 and upper surface outer edge 62 of the protective cover 60, which makes it possible to prevent the upper part of the burner body 41 from being scratched by contact with the burner ring 31 when attaching the top plate 30 to the stove main body 20.

[0051] 5(b) shows the state in which the top plate 30 has already been installed on the stove body 20, and in particular, the lower end of the outer periphery 61 of the protective cover 60 of the first embodiment extends downward below the portion exposed upward from the insertion hole 31a of the burner ring 31 in the burner body 41. In this way, the burner ring 31 does not come into direct contact with the outer periphery of the burner body 41 until the installation of the top plate 30 on the stove body 20 is completed, making it possible to prevent scratches on the exterior (outer periphery) of the burner body 41.

[0052] 5(b), the top plate installation jig 50 is attached from above the protective cover 60 attached to the burner body 41. As shown in the figure, the upper surface outer edge 62 of the protective cover 60 is interposed between the lower end surface of the guide portion 51 of the top plate installation jig 50 and the upper surface (mounting surface 41d) of the burner body 41, making it possible to prevent scratches on the upper surface of the burner body 41 due to contact with the top plate installation jig 50. Moreover, the top plate installation jig 50 presses the protective cover 60 from above, making it possible to prevent the protective cover 60 from easily coming off the burner body 41.

[0053] Furthermore, while the mounting surface 41d of the illustrated burner body 41 is inclined downward toward the inside, the upper surface outer edge 62 of the protective cover 60 of the first embodiment is approximately horizontal. Since the mounting surface 41d of the burner body 41 and the upper surface outer edge 62 of the protective cover 60 are at different angles relative to the horizontal in this way, it is possible to prevent the burner head 43 from being placed on the burner body 41 with the protective cover 60 still attached, due to forgetting to remove the protective cover 60 after attaching the top plate 30 to the stove main body 20.

[0054] 6 is a vertical cross-sectional view showing the case where the burner head 43 is placed on the burner body 41 with the protective cover 60 of the first embodiment attached. As shown in the figure, the upper surface outer edge 62 of the protective cover 60 of the first embodiment is not parallel to the mounting surface 41d of the burner body 41 but gradually moves away from it toward the inside of the burner body 41. On the other hand, the lower end surface of the peripheral wall 43a of the burner head 43 is inclined and substantially parallel to the mounting surface 41d of the burner body 41, similar to the mounting surface 41d of the burner body 41. Therefore, even if an attempt is made to place the burner head 43 on the burner body 41, the inner side of the lower end surface of the peripheral wall 43a abuts against the upper surface outer edge 62 of the protective cover 60, preventing the placement. Furthermore, since the burner head 43 is floating relative to the burner body 41, an operator can easily notice that the protective cover 60 is still attached to the burner body 41, which makes it possible to prevent forgetting to remove the protective cover 60. The upper surface outer edge portion 62 of the first embodiment corresponds to the "blocking portion" of the present invention.

[0055] FIG. 7 is a perspective view showing the shape of a protective cover 60 of the second embodiment. First, FIG. 7(a) shows the protective cover 60 before it is attached to the burner body 41. As shown in the figure, the protective cover 60 of the second embodiment is different from the protective cover 60 of the first embodiment in that a pair of protruding portions 63 are added, extending from an outer edge portion 62 of the upper surface, protruding inward, and facing each other with a central gap G therebetween. This gap G is set to be wider than the outer diameter of the temperature sensor 45 and narrower than the outer diameter of the support pole 46. Each protruding portion 63 is formed with a through-hole 64 penetrating vertically. The protruding portions 63 of the second embodiment correspond to the "gap-forming portion" of the present invention.

[0056] 7(b) shows the state in which the protective cover 60 of the second embodiment is attached to the burner body 41. As in the first embodiment described above, in the second embodiment, the upper part of the burner body 41 is covered by the outer periphery 61 and upper surface outer edge 62 of the protective cover 60, thereby preventing the upper part of the burner body 41 from being scratched when the top plate 30 is installed on the stove main body 20. When the top plate installation jig 50 described above is installed on top of the protective cover 60 of the second embodiment attached to the burner body 41 (see FIG. 4), the legs 53 of the top plate installation jig 50 can be inserted into the inside of the burner body 41 through the gap G between the pair of protrusions 63 and the through-holes 64.

[0057] Furthermore, when the protective cover 60 of the second embodiment is attached to the burner body 41, the pair of protruding parts 63 are positioned below the temperature sensor 45. The distance (gap G) between the pair of protruding parts 63 is narrower than the outer diameter of the temperature sensor 45, and therefore the pair of protruding parts 63 get caught on the lower end of the temperature sensor 45, thereby preventing the protective cover 60 from easily coming off the burner body 41.

[0058] On the other hand, since the pair of protrusions 63 are formed from a flexible resin material such as PET, when the temperature sensor 45 is passed through the gap G between the pair of protrusions 63 in connection with attaching or detaching the protective cover 60 of the second embodiment, the pair of protrusions 63 bend, thereby preventing excessive load from being placed on the temperature sensor 45.

[0059] Furthermore, when removing the protective cover 60 of the second embodiment from the burner body 41, the worker simply places his or her fingers in the through-holes 64 on the top surface of the protective cover 60 and pulls it upward, and removal can be easily performed without the need for special tools. Moreover, the provision of the pair of protruding portions 63 makes it possible to prevent forgetting to remove the protective cover 60. The through-holes 64 of the second embodiment correspond to the "finger hook" of the present invention.

[0060] 8 is a perspective view showing the case where the burner head 43 is placed on the burner body 41 with the protective cover 60 of the second embodiment attached. As described above, when placing the burner head 43 on the burner body 41, the fitting tube 43b of the burner head 43 is fitted (inserted) into the inside of the short cylindrical fitting surface 41e formed on the inside (inner surface plate 41b) of the burner body 41 (see FIG. 4). Then, with the protective cover 60 of the second embodiment attached to the burner body 41, the pair of protruding portions 63 are positioned above the fitting surface 41e. Furthermore, the distance (gap G) between the pair of protruding portions 63 is narrower than the outer diameter of the fitting tube 43b. Therefore, even when attempting to place the burner head 43 on the burner body 41, the fitting tube 43b hits the pair of protruding portions 63 and prevents insertion into the inside of the fitting surface 41e, which makes the worker realize that the protective cover 60 is still attached to the burner body 41, making it possible to prevent forgetting to remove the protective cover 60. Note that the fitting tube 43b of the second embodiment corresponds to the "protruding portion" of the present invention, and the inside of the fitting surface 41e of the second embodiment corresponds to the "inserted portion" of the present invention. Also, the protruding portions 63 of the second embodiment correspond to the "blocking portion" of the present invention.

[0061] Although various embodiments of the gas stove 10 have been described above, the present invention is not limited to the above-described embodiments, and can be embodied in various forms without departing from the spirit of the present invention.

[0062] For example, in the above-described embodiment, the burner ring 31 is movably installed on the top plate 30. However, an insertion hole through which the upper part of the stove burner 40 protrudes may be formed directly in the top plate 30 without installing the burner ring 31 on the top plate 30. When an insertion hole is formed in the top plate 30 in this manner, it is generally made larger than the insertion hole 31a of the burner ring 31. However, when the top plate 30 is attached to the stove main body 20, the periphery of the insertion hole in the top plate 30 may come into contact with the burner body 41, which may cause scratches on the exterior (outer surface) of the burner body 41. Therefore, by attaching the protective cover 60 to the burner body 41 as in the first and second embodiments described above, scratches on the burner body 41 caused by installing the top plate 30 on the stove main body 20 can be prevented.

[0063] Furthermore, in the above-described embodiment, the top plate installation jig 50 was used when passing the top of the burner body 41 through the insertion hole 31a of the burner ring 31 in installing the top plate 30 on the stove body 20. However, even when the top plate installation jig 50 is not used, the protective cover 60 of the present invention can be applied, and compared to when the top plate installation jig 50 is used, the inner edge of the burner ring 31 (around the insertion hole 31a) is more likely to come into contact with the top of the burner body 41, making the attachment of the protective cover 60 more effective.

[0064] Furthermore, in the first embodiment described above, the upper surface outer edge 62 of the protective cover 60 was designed to cover the entire mounting surface 41d of the burner body 41. However, the upper surface outer edge 62 of the protective cover 60 does not have to cover the entire mounting surface 41d, and may only cover the outer periphery of the mounting surface 41d. However, if the upper surface outer edge 62 covers the inner periphery of the mounting surface 41d, this is preferable because when the burner head 43 is attached to the burner body 41 with the protective cover 60 still attached, the inner side of the lower end surface of the peripheral wall 43a abuts against the upper surface outer edge 62, making it easy to notice that the protective cover 60 has been left unremoved.

[0065] In the first embodiment described above, the upper surface outer edge 62 of the protective cover 60 is generally horizontal. However, the upper surface outer edge 62 is not limited to being generally horizontal and may be inclined upward toward the inside. In this case, the distance between the upper surface outer edge 62 and the mounting surface 41d, which is inclined downward toward the inside of the burner body 41, is even greater than when the upper surface outer edge 62 is generally horizontal (see FIG. 6). As a result, when the burner head 43 is attached to the burner body 41 with the protective cover 60 attached, the inner side of the lower end surface of the peripheral wall 43a abuts against the upper surface outer edge 62, causing the burner head 43 to be largely raised above the burner body 41. This makes it easier for the worker to notice that the protective cover 60 is still attached to the burner body 41, making it possible to prevent the worker from forgetting to remove the protective cover 60. In addition, as for the protective cover 60 of the second embodiment described above, if the protective cover 60 is provided with the pair of protruding portions 63, the outer edge portion 62 of the upper surface may be substantially parallel to the mounting surface 41d of the burner body 41.

[0066] In the above-described embodiment, the support pole 46 having the temperature sensor 45 at its upper end was installed in the central passage 43c that passes through the stove burner 40 in the vertical direction. However, the protective cover 60 of the present invention can also be applied to a type of gas stove 10 that does not have a temperature sensor 45. In that case, when attaching the protective cover 60 to the burner body 41, it is not necessary to pass the temperature sensor 45 inside the protective cover 60, so the protective cover 60 may cover not only the outer edge portion (mounting surface 41d) of the upper surface of the burner body 41 but also the entire upper surface.

[0067] Furthermore, the protective cover 60 in the first and second embodiments described above may be attached to the burner body 41 when the gas stove 10 is shipped from the factory, but the timing of attaching the protective cover 60 is not limited to this, and it is sufficient that the protective cover 60 is attached to the burner body 41 at least when the top plate 30 is attached to the stove main body 20. [Explanation of symbols]

[0068] 10...gas stove, 20...stove body, 20a...front panel, 21...grill, 21d...grill door, 22...cooker operation button, 23...grill operation button, 24...flange portion, 24f...front flange portion, 25...engagement hole, 26...insertion portion, 27...screw hole, 30...top plate, 30a...opening, 31...burner ring, 31a...insertion hole, 32...back plate, 32a...insertion hole, 33...exhaust port, 34...engagement spring, 34a...widened portion, 35...Through hole, 36...Fixing screw, 37...Trivet, 38...Exhaust port cover, 40...Stove burner, 41...Burner body, 41a...Outer plate, 41b...Inner plate, 41c...Mixing chamber, 41d... placement surface, 41e... fitting surface, 42... mixing tube, 42a...opening end, 43...burner head, 43a...peripheral wall, 43b...Mating tube, 43c...Central passage, 43d...Groove 44...flame nozzle, 45...temperature sensor, 46...support pole, 50...top plate installation jig, 51...guide portion, 52...accommodation portion, 53...leg portion, 54...projection portion, 60...protective cover, 61...periphery, 62...upper surface outer edge, 63...projection, 64...Through hole.

Claims

1. In a gas stove in which a top plate is installed to cover the top surface of a box-shaped stove body, and the upper part of the stove burner mounted on the stove body protrudes above the top plate through an insertion hole, The burner burner is composed of a burner body that is fixed inside the stove body, the upper part of which is inserted into the insertion hole and exposed above the top plate, and a burner head that is placed on the burner body to define a plurality of flame ports through which a mixed gas of fuel gas and air flows out and is detachable from the burner body. A protective cover is provided which is attached to cover the upper part of the burner body with the burner head removed and is detachable, and which is in an attached state at least when the top plate is installed on the stove body; The protective cover has an upper surface portion that covers an upper surface of the burner body and an outer periphery portion that covers an upper outer periphery of the burner body, The upper surface is provided with a blocking portion that prevents the burner head from being placed on the burner body when the protective cover is attached to the burner body. A gas stove characterized by:

2. The gas stove according to claim 1, The lower end of the outer periphery of the protective cover extends downward beyond the portion of the burner body that is exposed upward through the insertion hole when the top plate is installed on the stove body. A gas stove characterized by:

3. The gas stove according to claim 1 or 2, A cylindrical peripheral wall extends downward from the outer edge of the burner head, a mounting surface on which a lower end surface of the peripheral wall of the burner head is placed is provided on an upper surface of the burner body, The blocking portion, which is located above the mounting surface when the protective cover is attached to the burner body, and the mounting surface are at different angles relative to the horizontal. A gas stove characterized by:

4. The gas stove according to claim 1 or 2, the burner body is provided with an insertion portion into which a protruding portion protruding downward from the burner head is inserted when the burner head is placed, When the protective cover is attached to the burner body, the blocking portion is disposed above the inserted portion. A gas stove characterized by:

5. The gas stove according to claim 1 or 2, A temperature sensor is attached to the upper end of a support pole installed in a central passage that passes through the burner body and the burner head in the vertical direction, and is in contact with a cooking container placed above the stove burner to detect the temperature. a gap forming portion that forms a gap that is wider than an outer diameter of the support pole and narrower than an outer diameter of the temperature sensor is provided on the upper surface portion of the protective cover; The gap forming portion is located below the temperature sensor when the protective cover is attached to the burner body, and is formed of a flexible material that can bend and widen the gap when the temperature sensor is passed through the gap. A gas stove characterized by:

6. The gas stove according to claim 1 or 2, The upper surface of the protective cover is provided with a finger hook on which an operator can hook his / her fingers when removing the protective cover from the burner body. A gas stove characterized by:

7. The gas stove according to claim 1 or 2, a burner ring provided in the opening of the top plate so as to be movable parallel to the top plate, the burner ring having the insertion hole formed therein; a top plate installation jig that is detachably attached to the burner body from above with the burner head removed, and that aligns the center of the insertion hole with the center of the burner body when installing the top plate on the stove main body; Equipped with When the top plate installation jig is attached from above to the burner body with the protective cover attached, the top surface of the protective cover is interposed between the upper surface of the burner body and the top plate installation jig. A gas stove characterized by:

8. In a gas stove in which a top plate is installed covering the top surface of a box-shaped stove body and the top of the stove burner mounted on the stove body protrudes above the top plate through an insertion hole, the stove burner is composed of a burner body that is fixed inside the stove body and has an upper part that is inserted into the insertion hole and exposed above the top plate, and a burner head that is placed on the burner body to define multiple flame ports through which a mixture of fuel gas and air flows out and is detachable from the burner body, a protective cover that is attached to cover the top of the burner body when the burner head is removed and is detachable, and is in an attached state at least when the top plate is installed on the stove body, An upper surface portion covering the upper surface of the burner body and an outer periphery portion covering the upper outer periphery of the burner body, The upper surface portion is provided with a blocking portion that prevents the burner head from being placed on the burner body when the protective cover is attached to the burner body. A protective cover characterized by:

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