Gas stove

Abstract

To provide a gas cooking stove which can efficiently heat a heated product similar to the case that a ceiling plate cover is not used even in the case that the ceiling plate cover is used.SOLUTION: A gas cooking stove comprises: a first ceiling plate 50; a second ceiling plate 60 arranged at a plate surface 50a of the first ceiling plate 50 while being laminated thereon; a burner 20 exposed from a first hole and a second hole 61 in a state that the second ceiling plate 60 is overlapped on the first ceiling plate 50, and heating a heated product; and a trivet 30 surrounding the burner 20, arranged on the plate surface of the first ceiling plate 50 or the second ceiling plate 60, and having a placing face 33 on which the heated product is placed. When the trivet 30 is arranged on the plate surface 50a of the first ceiling plate 50, the trivet abuts on the first ceiling plate 50 without changing a distance between the burner 20 and the placing face 33 in a vertical direction, and when the trivet is arranged on the plate surface 60a of the second ceiling plate 60, the trivet has an abutment face which is formed so as to be changeable in a distance from the placing face 33 in the vertical direction so as to abut on the second ceiling plate 60.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a gas stove.

Background Art

[0002] A gas stove has a top plate and a trivet. The trivet is detachable, but the top plate is configured to be non-detachable. Therefore, usually, the top plate is replaced after purchasing a gas stove only when the top plate is damaged and it is impossible, difficult, or extremely unfavorable to continue using the gas stove. Moreover, since the replaced top plate is often the same as the one attached before replacement, it is difficult to change the appearance of the top plate.

[0003] Patent Document 1 discloses a top plate cover placed on the top plate (referred to as "top plate" in Patent Document 1) of an existing gas stove (referred to as "stove" in Patent Document 1). By using a top plate cover with a design different from that of the top plate, the appearance of the gas stove can be easily changed by placing the top plate cover. Patent Document 1 also discloses that this top plate cover is fixed to the top plate by silicone caulking, screws, etc.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Since the burner of the gas stove is attached to the stove body, regardless of whether the top plate cover is used or not, the position of the flame outlet from the burner remains unchanged and is at the same height relative to the top plate. On the other hand, the cooking grate is placed on the top plate when the top plate cover is not in use and is placed on the top plate cover and used when the top plate cover is in use. Therefore, when the top plate cover is in use, the cooking grate is placed at a position higher by the thickness of the top plate cover. Since the object to be heated, such as a pot, is placed on the cooking grate and heated, when the top plate cover is used, the position of the object to be heated relative to the flame outlet of the burner becomes higher by the height of the top plate cover.

[0006] Normally, a gas stove is designed to be able to heat the object to be heated most efficiently when a cooking grate is placed on the top plate, and placing a top plate cover on the top plate is not assumed. Therefore, when heating the object to be heated using the top plate cover, there is a possibility that the heating efficiency may decrease compared to the case of heating the object to be heated without using the top plate cover.

[0007] In addition, some gas stoves are equipped with sensors that detect the presence or absence of an object to be heated, such as a pot being heated, and detect the temperature of the object to be heated to control the heating power. Such sensors detect the object to be heated, etc. by being depressed by the object to be heated placed on the cooking grate. Therefore, when the position of the object to be heated relative to the flame outlet of the burner becomes higher due to the use of the top plate cover, the amount of depression of the sensor becomes insufficient, and there is a possibility that the sensor may not function properly.

[0008] Therefore, there is a demand for a gas stove that can efficiently heat the object to be heated equally well whether the top plate cover is used or not.

Means for Solving the Problem

[0009] The characteristic configuration of the gas stove according to the present invention for achieving the above object includes a first top plate having a first hole, a second top plate disposed on top of the first top plate and having a second hole through which the entire first hole is exposed in the disposed state, a burner that is exposed from the first hole and the second hole and heats an object to be heated with the second top plate disposed on top of the first top plate, and a trivet that surrounds the burner and is disposed on the plate surface of the first top plate or the plate surface of the second top plate and has a placement surface on which the object to be heated is placed. The trivet has a contact surface configured to be able to change the vertical distance from the placement surface so that when disposed on the plate surface of the first top plate, it contacts the first top plate, and when disposed on the plate surface of the second top plate, it contacts the second top plate, without changing the vertical distance between the burner and the placement surface.

[0010] According to the above characteristic configuration, by changing the vertical distance from the placement surface to the contact surface of the trivet, the same trivet can be used regardless of whether the first top plate or the second top plate is used, without changing the vertical distance between the burner and the placement surface.

[0011] Another characteristic configuration of the gas stove according to the present invention is that the trivet has an annular frame portion and a plurality of leg portions fixed to the frame portion and arranged along the radial direction, and at least one of the frame portion and the leg portions has the contact surface.

[0012] According to the above characteristic configuration, the trivet can be stably supported.

[0013] Another characteristic configuration of the gas stove according to the present invention is that a cap is attached to a portion of the frame portion and the leg portions that has the contact surface, and by attaching and detaching the cap, the vertical distance from the placement surface of the contact surface is changed.

[0014] According to the above characteristic configuration, the vertical distance from the placement surface of the contact surface can be changed by a simple method of attaching and detaching the cap.

[0015] Another characteristic configuration of the gas stove according to the present invention further includes a detection unit that detects that the object to be heated is placed on the placement surface, and the cooking plate has the same vertical distance between the placement surface and the detection unit whether it is placed on the plate surface of the first top plate or on the plate surface of the second top plate.

[0016] According to the above characteristic configuration, since the distance between the bottom surface of the object to be heated and the detection unit does not change, the detection unit can function normally regardless of whether the cooking plate is placed on the plate surface of the first top plate or the plate surface of the second top plate.

[0017] Another characteristic configuration of the gas stove according to the present invention further includes a grill and an exhaust port for exhausting the combustion exhaust gas generated by the grill. The exhaust port is located vertically between the plate surface of the first top plate and the plate surface of the second top plate when the second top plate is placed on top of the first top plate.

[0018] According to the above characteristic configuration, the combustion exhaust gas of the grill can be exhausted from the exhaust port in both cases when the second top plate is arranged and when the second top plate is removed.

[0019] Another characteristic configuration of the gas stove according to the present invention is that the outer peripheral portion of the second top plate is fixed to the outer peripheral portion of the first top plate by an elastic member.

[0020] According to the above characteristic configuration, the second top plate can be stably fixed to the first top plate and can be easily removed from the first top plate.

Effect of the Invention

[0021] According to the gas stove of the present invention, even when the top plate cover (second top plate) is used, the object to be heated can be efficiently heated in the same manner as when the top plate cover is not used.

Brief Description of the Drawings

[0022]

Figure 1

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Figure 16

Mode for Carrying Out the Invention

[0023] Hereinafter, embodiments of the gas stove according to the present invention will be described in detail with reference to the drawings. Note that the embodiments described below are examples for explaining the present invention, and the present invention is not limited only to these embodiments. Therefore, the present invention can be implemented in various forms without departing from its gist.

[0024] 〔First Embodiment〕 As shown in FIGS. 1 to 3, the gas stove 1 according to the present embodiment is configured in a form including two stove burners (an example of a burner) 20, 20 provided on the upper surface of the stove main body 10, a circular trivet 30 corresponding to each stove burner 20, and a grill 40. The upper surface of the stove main body 10 of the gas stove 1 is covered with a rectangular glass first top plate (an example of a first top board) 50 when viewed in the vertical direction. Further, it has a rectangular glass second top plate (an example of a second top board) 60 that is disposed so as to overlap on the first top plate 50. The first top plate 50 and the second top plate 60 are generally the same shape, and the outer periphery of the second top plate 60 is configured to be slightly larger than the outer periphery of the first top plate 50.

[0025] The gas stove 1 can be used in a state where only the first top plate 50 is used without using the second top plate 60, and can also be used in a state where the second top plate 60 is disposed so as to overlap on the first top plate 50. Hereinafter, the state where only the first top plate 50 is used is referred to as the first state, and the state where the second top plate 60 is disposed so as to overlap on the first top plate 50 is referred to as the second state. That is, the user of the gas stove 1 uses it by visually recognizing the upper surface (an example of a plate surface) 50a of the first top plate 50 in the first state, and uses it by visually recognizing the upper surface (an example of a plate surface) 60a of the second top plate 60 in the second state. The state shown in FIG. 1 is the second state. Hereinafter, the second state of the gas stove 1 will be described.

[0026] Each burner 20 of the gas stove 1 includes a burner body 21, a burner ring 22, and a burner cap 23. The burner body 21 is housed inside the stove body 10, and its upper part penetrates through a circular first hole 51 formed in the first top plate 50 and a circular second hole 61 formed in the second top plate 60 and is exposed above the first top plate 50 and the second top plate 60. The burner ring 22 is fixed or placed in the first hole 51 of the first top plate 50 by means such as adhesion. The burner cap 23 is disposed on the upper part of the burner body 21. A sensor (an example of a detection unit) 24 that detects the presence or absence of an object to be heated (not shown), such as a pot heated by the burner 20, and detects the temperature of the object to be heated to control the heating power projects through the burner cap 23 from the burner body 21.

[0027] As shown in FIG. 3, the trivet 30 has an annular metal frame portion 31 and a plurality (six in this embodiment) of metal legs 32 fixed to the frame portion 31 and arranged along the radial direction of the frame portion 31. Each leg 32 has an end portion on the inner diameter side fixed to the frame portion 31 by adhesion, welding, or the like, extends upward from the fixed portion, extends horizontally outward in the radial direction therefrom, and further extends downward therefrom to reach the outer diameter side end portion (support portion 32a). The trivet 30 according to this embodiment is arranged around the first hole 51 such that the lower surface of the frame portion 31 abuts against the burner ring 22 and the abutting surface 32a1 of the support portion 32a on the outer diameter side of the leg 32 abuts against the first top plate 50. The frame portion 31 is configured to be horizontally positioned by a mechanism (not shown) when it abuts against the burner ring 22. A placement surface 33 on which an object to be heated is placed is formed on the upper surface of the portion of the leg 32 of the trivet 30 that extends horizontally in the radial outer direction.

[0028] From the rear side of the upper surface of the gas stove 1, an exhaust pipe 41 for exhausting combustion exhaust gas when cooking with the grill 40 housed inside the stove body 10 extends rearward and upward from inside the grill 40 and protrudes upward from the upper surface 50a of the first top plate 50. The exhaust port 42, which is the extending end of the exhaust pipe 41, is covered by an exhaust port cover 43. The protruding amount of the exhaust pipe 41 from the upper surface 50a of the first top plate 50 is such that in a state where the second top plate 60 is stacked on the first top plate 50, the exhaust port 42 does not protrude from the upper surface 60a of the second top plate 60. That is, the exhaust port 42 is located between the upper surface 50a of the first top plate 50 and the upper surface 60a of the second top plate 60 in the vertical direction in the second state. Thereby, in either the first state or the second state, the combustion exhaust gas of the grill 40 can be exhausted from the exhaust port 42. Also, in the second state, the upper surface 60a of the second top plate 60 and the upper surface of the exhaust port cover 43 are configured to be substantially flush.

[0029] As described above, the gas stove 1 can be used in either the first state or the second state. At that time, the trivet 30 is used in either state. The trivet 30 according to the present embodiment is configured such that the height-direction position of the placement surface 33 of the trivet 30 with respect to the flame port of the stove burner 20 does not change between the first state and the second state. The specific configuration will be described later.

[0030] As shown in FIG. 3, a cap 32b is detachably attached to a support portion 32a which is the radially outer end of each leg portion 32 of the grate 30. The lower surface of the support portion 32a serves as a contact surface 32a1, and the lower surface of the cap 32b when the cap 32b is attached to the support portion 32a serves as a contact surface 32b1. The grate 30 is used with the cap 32b attached in the first state and used with the cap 32b removed in the second state. That is, in the first state, the contact surface 32b1 abuts against the upper surface 50a of the first top plate 50, and in the second state, the contact surface 32a1 abuts against the upper surface 60a of the second top plate 60. By providing the support portion 32a (contact surface 32a1) at the radially outer end of the leg portion 32, the grate 30 can be stably supported.

[0031] FIG. 4 shows an enlarged view of the vicinity of the stove burner 20 in the first state. In the first state, a burner ring 22 is attached to the upper surface 50a of the first top plate 50, and the frame portion 31 of the grate 30 is placed thereon. A cap 32b is attached to the support portion 32a of the leg portion 32, and the contact surface 32b1 of the cap 32b abuts against the upper surface 50a. At this time, the height difference between the placement surface 33 of the grate 30 and the upper surface of the sensor 24 is configured to be X. Also, at this time, the height (flame height) from the flame port of the stove burner 20 to the placement surface 33 of the grate 30 is configured to maximize the heating efficiency of the object to be heated and to enable the sensor 24 to function properly. Note that the thickness of the burner ring 22 is thinner than X.

[0032] FIG. 5 shows an enlarged view of the vicinity of the cooker burner 20 in the second state. Even in the second state, the burner ring 22 is attached to the upper surface 50a of the first top plate 50, and the frame portion 31 of the cooking grate 30 is placed thereon. The second top plate 60 has a second hole 61 larger than the outer diameter of the frame portion 31 of the cooking grate 30 and exposes the entire first hole 51, and is disposed on the first top plate 50 via a packing 62 in an overlapping manner. The cap 32b is removed from the support portion 32a of the leg portion 32, and the support portion 32a is exposed. And the contact surface 32a1 of the support portion 32a is in contact with the upper surface 60a of the second top plate 60. The frame portion 31 is placed on the burner ring 22 as in the first state. In the second state, the sum of the thickness of the second top plate 60 and the thickness of the packing 62 is configured to be the same X as the height difference between the placement surface 33 of the cooking grate 30 and the upper surface of the sensor 24. Also, the height difference between the contact surface 32b1 of the cap 32b and the contact surface 32a1 of the support portion 32a is configured to be X (see FIG. 4). That is, by removing the cap 32b, the vertical distance from the placement surface 33 to the contact surface 32b1 and the vertical distance from the placement surface 33 to the contact surface 33a1 can be changed by X, which is the sum of the thickness of the second top plate 60 and the thickness of the packing 62. Therefore, even in the second state, the height difference between the placement surface 33 of the cooking grate 30 and the upper surface of the sensor 24 is the same X as in the first state. Accordingly, the height (flame height) from the flame port of the cooker burner 20 to the placement surface 33 of the cooking grate 30 does not change, and even in the second state, the heating efficiency of the object to be heated is the same as in the first state, and the sensor 24 functions normally.

[0033] Thus, by providing the detachable cap 32b on the support portion 32a of the trivet 30, the vertical distance from the placement surface 33 of the trivet 30 to the contact surface 32a1 and the vertical distance from the placement surface 33 to the contact surface 32b1 can be made different. As a result, since the height (flame height) from the flame port of the gas burner 20 to the placement surface 33 of the trivet 30 does not change, a gas stove 1 that equalizes the heating efficiency of the object to be heated and allows the sensor 24 to function properly can be realized in both the first state and the second state. In addition, since the same trivet 30 can be used for the first state and the second state, by detaching the second top plate 60, which has a different color, pattern, material, etc. from the first top plate 50, from the gas stove 1, the overall appearance and aesthetics of the gas stove 1 can be easily changed between the first top plate 50 and the second top plate 60. Furthermore, even when the second top plate 60 is damaged, soiled, etc., the gas stove 1 can continue to be used simply by replacing the second top plate 60. Also, the second top plate 60 can be used as a cover (top plate cover) for the first top plate 50.

[0034] 〔Modification of the First Embodiment〕 (1) Figures 6 and 7 show a gas stove 1 in which a hollow first top plate 50 thinner than that of the first embodiment and a hollow second top plate 60 are used. In this modification, burning 22 is not used. Instead, the vicinity of the first hole 51 of the first top plate 50 bulges upward by the thickness of the burning 22 to form a burning 52. In this modification, as shown in FIG. 6, in the first state, the frame portion 31 of the trivet 30 is placed on the burning 52. A cap 32b is attached to the support portion 32a of the leg portion 32, and the contact surface 32b1 of the cap 32b is in contact with the upper surface 50a. At this time, the height difference between the placement surface 33 of the trivet 30 and the upper surface of the sensor 24 is configured to be X. Also, at this time, the height (flame height) from the flame port of the stove burner 20 to the placement surface 33 of the trivet 30 is configured to maximize the heating efficiency of the object to be heated and to enable the sensor 24 to function properly. Note that the thickness of the burning 52 (the amount of bulge from the upper surface 50a of the first top plate 50) is smaller than X.

[0035] FIG. 7 shows an enlarged view of the vicinity of the cooker burner 20 in the second state. Even in the second state, the frame portion 31 of the cooking plate 30 is placed on the burner ring 52. The second top plate 60 has a second hole 61 that is larger than the outer diameter of the frame portion 31 of the cooking plate 30 and exposes the entire first hole 51. In this modification, the inner surface of the second hole 61 is folded back in the radially outward direction and disposed on top of the first top plate 50. At this time, the thickness including the folded-back portion of the second top plate 60 is configured to be X. The cap 32b is removed from the support portion 32a of the leg portion 32, and the support portion 32a is exposed. The contact surface 32a1 of the support portion 32a is in contact with the upper surface 60a of the second top plate 60. The frame portion 31 is placed on the burner ring 52 as in the first state. Also, the height difference between the contact surface 32b1 of the cap 32b and the contact surface 32a1 of the support portion 32a is configured to be X (see FIG. 6). Therefore, even in the second state, the height difference between the placement surface 33 of the cooking plate 30 and the upper surface of the sensor 24 is the same X as in the first state. Accordingly, the height (flame height) from the flame port of the cooker burner 20 to the placement surface 33 of the cooking plate 30 does not change either. Thus, even in the second state, the heating efficiency of the object to be heated is the same as in the first state, and the sensor 24 functions properly.

[0036] With such a configuration, even when the thickness of the second top plate 60 is thin, the same cooking plate 30 as in the first embodiment can be used.

[0037] (2) Figures 8 and 9 show a gas stove 1 that is different from the first embodiment in that the thickness of the burner ring 22 is X. In this modified example, as shown in Figure 8, in the first state, similar to the first embodiment, the burner ring 22 is attached to the upper surface 50a of the first top plate 50, and the frame portion 31 of the cooking grate 30 is placed thereon. A cap 32b is attached to the support portion 32a of the leg portion 32, and the contact surface 32b1 of the cap 32b is in contact with the upper surface 50a. At this time, the height difference between the placement surface 33 of the cooking grate 30 and the upper surface of the sensor 24 is configured to be X. Also, at this time, the height (flame height) from the flame outlet of the stove burner 20 to the placement surface 33 of the cooking grate 30 is configured to maximize the heating efficiency of the object to be heated and allow the sensor 24 to function properly.

[0038] Figure 9 shows an enlarged view of the vicinity of the stove burner 20 in the second state. Even in the second state, the burner ring 22 is attached to the upper surface 50a of the first top plate 50, and the frame portion 31 of the cooking grate 30 is placed thereon. The second top plate 60 is disposed on top of the first top plate 50 via a packing 62. The second top plate 60 of this modified example is different from the first embodiment in that the entire first hole 51 is exposed, but it has a second hole 61 that is smaller than the outer diameter of the frame portion 31 of the cooking grate 30. For this reason, the frame portion 31 is placed across the burner ring 22 and the second top plate 60. The cap 32b is removed from the support portion 32a of the leg portion 32, and the support portion 32a is in an exposed state, and the contact surface 32a1 of the support portion 32a is in contact with the upper surface 60a of the second top plate 60. At this time, the sum of the thickness of the second top plate 60 and the thickness of the packing 62 is configured to be X. Also, the height difference between the contact surface 32b1 of the cap 32b and the contact surface 32a1 of the support portion 32a is also configured to be X (see Figure 8). Therefore, even in the second state, the height difference between the placement surface 33 of the cooking grate 30 and the upper surface of the sensor 24 is the same X as in the first state. Accordingly, the height (flame height) from the flame outlet of the stove burner 20 to the placement surface 33 of the cooking grate 30 does not change, and even in the second state, the heating efficiency of the object to be heated is the same as in the first state, and the sensor 24 functions properly.

[0039] By adopting such a configuration, in the second state, the trivet 30 can be placed more stably than in the first state.

[0040] (3) Figures 10 and 11 show a gas stove 1 that is different from the first embodiment in that the burner 22 is not used, and instead, the vicinity of the first hole 51 of the first top plate 50 bulges upward by the thickness of the burner 22 to form a burner 52, and is different from the modification (2) in that the thickness of the burner 52 is X. In this modification, as shown in Figure 10, in the first state, the frame portion 31 of the trivet 30 is placed on the burner 52. A cap 32b is attached to the support portion 32a of the leg portion 32, and the contact surface 32b1 of the cap 32b is in contact with the upper surface 50a. At this time, the height difference between the placement surface 33 of the trivet 30 and the upper surface of the sensor 24 is configured to be X. Also, at this time, the height (flame height) from the flame port of the stove burner 20 to the placement surface 33 of the trivet 30 is configured to maximize the heating efficiency of the object to be heated and allow the sensor 24 to function properly.

[0041] FIG. 11 shows an enlarged view of the vicinity of the stove burner 20 in the second state. Even in the second state, the frame portion 31 of the cooking plate 30 is placed on the burner ring 52. The second top plate 60 of this modification is different from the modification (2) in that the entire first hole 51 is exposed, but it has a second hole 61 that is smaller than the outer diameter of the frame portion 31 of the cooking plate 30. Further, in the second top plate 60 of this modification, the inner surface of the second hole 61 is folded back in the radial direction and is disposed on top of the first top plate 50. At this time, it is configured such that the thickness including the folded-back portion of the second top plate 60 becomes X. For this reason, the frame portion 31 is placed across the burner ring 52 and the second top plate 60. The cap 32b has been removed from the support portion 32a of the leg portion 32, and the support portion 32a is in an exposed state, and the contact surface 32a1 of the support portion 32a is in contact with the upper surface 60a of the second top plate 60. Also, the height difference between the contact surface 32b1 of the cap 32b and the contact surface 32a1 of the support portion 32a is also configured to be X (see FIG. 10). Therefore, even in the second state, the height difference between the placement surface 33 of the cooking plate 30 and the upper surface of the sensor 24 is the same X as in the first state. Accordingly, the height (flame height) from the flame port of the stove burner 20 to the placement surface 33 of the cooking plate 30 does not change, and even in the second state, the heating efficiency of the object to be heated is the same as in the first state, and the sensor 24 functions normally.

[0042] By adopting such a configuration, even when the thickness of the second top plate 60 is thin, the same cooking plate 30 as in the first embodiment can be used, and in the second state, the cooking plate 30 can be placed more stably than in the first state.

[0043] 〔Second Embodiment〕 Next, the gas stove 1 according to the second embodiment will be described with reference to FIGS. 12 and 13. In the description of this embodiment, the same reference numerals are given to the parts having the same configuration as in the first embodiment, and the description of the same configuration will be omitted. The gas stove 1 according to the second embodiment is different from the first embodiment in the shape of the cooking plate 30.

[0044] In the trivet 30 in this embodiment, as shown in FIG. 12, the inner diameter of the frame portion 31 is larger than the outer diameter of the burner ring 22. That is, when the trivet 30 is placed on the first top plate 50, the frame portion 31 is not placed on the burner ring 22 but on the upper surface 50a of the first top plate 50. A plurality of support portions 31a project from the back surface of the frame portion 31, and a cap 31b is detachably attached to the support portion 31a. Each of the plurality of legs 32 is formed to extend linearly in the radially outer direction from the frame portion 31, and the radially outer end portion does not contact the upper surface 50a of the first top plate 50.

[0045] FIG. 12 shows an enlarged view of the vicinity of the stove burner 20 in the first state. In the first state, as described above, the frame portion 31 of the trivet 30 is placed on the upper surface 50a of the first top plate 50. A cap 31b is attached to the support portion 31a of the frame portion 31, and the contact surface 31b1 of the cap 31b contacts the upper surface 50a. At this time, the height difference between the placement surface 33 of the trivet 30 and the upper surface of the sensor 24 is configured to be X. Also, at this time, the height (flame height) from the flame port of the stove burner 20 to the placement surface 33 of the trivet 30 is configured to maximize the heating efficiency of the object to be heated and to enable the sensor 24 to function properly.

[0046] FIG. 13 shows an enlarged view of the vicinity of the stove burner 20 in the second state. In the second state, the frame portion 31 of the cooking grate 30 is placed on the upper surface 60a of the second top plate 60. In the present embodiment, the second top plate 60 has a second hole 61 that exposes the entire first hole 51, is larger than the outer diameter of the burner ring 22, and is equal to or smaller than the inner diameter of the frame portion 31. The second top plate 60 is disposed on the first top plate 50 with a packing 62 interposed therebetween. A cap 31b is removed from the support portion 31a of the frame portion 31, and the support portion 31a is exposed. The contact surface 31a1 of the support portion 31a is in contact with the upper surface 60a of the second top plate 60. At this time, the sum of the thickness of the second top plate 60 and the thickness of the packing 62 is configured to be the same as the height difference X between the contact surface 31a1 of the support portion 31a and the contact surface 31b1 of the cap 31b. Further, the height difference between the contact surface 31b1 of the cap 31b and the contact surface 31a1 of the support portion 31a is also configured to be X (see FIG. 12). Therefore, even in the second state, the height difference between the placement surface 33 of the cooking grate 30 and the upper surface of the sensor 24 is the same as X in the first state. Accordingly, the height (flame height) from the flame port of the stove burner 20 to the placement surface 33 of the cooking grate 30 does not change, and even in the second state, the heating efficiency of the object to be heated is the same as in the first state, and the sensor 24 functions normally.

[0047] [Fixing the Second Top Plate to the First Top Plate] Next, a method of fixing the second top plate 60 to the first top plate 50 when the second top plate 60 is disposed on the first top plate 50 will be described.

[0048] (1) As shown in FIG. 14, on the lower surface 50b of the first top plate 50, a first frame (an example of an outer peripheral portion) 53 that follows the outer shape of the first top plate 50 and is placed on the kitchen worktop 70 is attached via a packing 55. Dents 54 are formed in the vicinity of the four corners on the outer peripheral surface of the first frame 53 having a rectangular shape when viewed in the vertical direction (for example, a total of 8 locations at 2 locations sandwiching each corner).

[0049] The second top plate 60 also has, similar to the first top plate 50, on its lower surface 60b, along the outer shape of the second top plate 60, a second frame (an example of an outer peripheral portion) 63 that is mounted on the kitchen worktop 70 via a packing 65. At locations near the four corners of the inner peripheral surface of the second frame 63 and corresponding to the depressions 54, leaf springs (an example of elastic members) 64 made of a metal having elastic force are attached (eight locations in this embodiment).

[0050] As described above, the first top plate 50 and the second top plate 60 are generally of the same shape, and the outer periphery of the second top plate 60 is configured to be slightly larger than the outer periphery of the first top plate 50. Therefore, the second top plate 60 can be stacked and arranged on the first top plate 50. When the second top plate 60 is stacked and arranged on the first top plate 50, after the leaf spring 64 is deformed by the elastic force and then restored to fit into each depression 54 of the first frame 53, the second top plate 60 is fixed to the first top plate 50. By using the elastic force of the leaf spring 64 in this way, the second top plate 60 can be stably fixed to the first top plate 50 and can be easily removed from the first top plate 50. Further, since the second top plate 60 has the second frame 63 that abuts against the kitchen worktop 70 via the packing 65, in the state where the second top plate 60 is stacked and arranged on the first top plate 50, the depressions 54 of the first top plate 50 and the leaf springs 64 of the second top plate 60 are not visible from the outside, and the aesthetic appearance of the gas stove 1 is not impaired.

[0051] In the configuration shown in FIG. 14, the side surfaces of the first top plate 50 and the second top plate 60 are exposed. Therefore, particularly in the case of a glass top plate, the second top plate 60 can be stably fixed to the first top plate 50 without impairing the aesthetic appearance.

[0052] (2) In FIG. 15, the first frame 53 and the second frame 63 cover the side surfaces of the first top plate 50 and the second top plate 60 respectively, which is different from the configuration of (1) above, but the other points are the same. In the configuration shown in FIG. 15, when the first top plate 50 and the second top plate 60 are made of glass, polishing of the side surfaces becomes unnecessary, so it can be configured at low cost.

[0053] (3) FIG. 16 shows the configuration when the first top plate 50 and the second top plate 60 are made of hollow. If the first top plate 50 and the second top plate 60 are made of hollow, since the base material is metal, it is not necessary to attach the first frame 53 and the second frame 63 as separate members, and by bending the ends of the first top plate 50 and the second top plate 60, the first frame 53 and the second frame 63 can be formed. The recess 54 can be formed by processing the first frame 53, but the leaf spring 64 needs to be attached separately unless the base material of the second top plate 60 has elasticity.

[0054] 〔Other Embodiments〕 (1) In the first embodiment and its modified example, the support portion 32a of the trivet 30 was provided at the extended end of the leg portion 32, but it is not limited to this. For example, if the leg portion 32 has a shape such that it extends radially outward and then folds back radially inward, the support portion 32a may be provided not at the extended end of the leg portion 32 but at the portion that extends radially outward.

[0055] (2) In the second embodiment, the support portion 31a was provided on the frame portion 31 of the trivet 30, and the outer end of the leg portion 32 was separated from the first top plate 50, but it is not limited to this. In addition to the frame portion 31, the support portion 32a may also be provided at the outer end of the leg portion 32.

[0056] (3) In the above-described embodiments and their modifications, the exhaust pipe 41 of the grill 40 protruded upward from the upper surface 50a of the first top plate 50. However, the present invention is not limited to this. A configuration in which the exhaust pipe 41 does not protrude from the first top plate 50 may be adopted. In this case, an exhaust pipe protruding downward may be provided on the lower surface of the exhaust port cover 43 and connected to the exhaust pipe 41, so that the combustion exhaust gas generated when cooking with the grill 40 can be exhausted from the exhaust port cover 43.

[0057] (4) In each of the above-described embodiments and their modifications, the caps 31b and 32b are attached to either one of the frame portion 31 and the leg portion 32. However, depending on the configuration of the cooking grate 30, the caps 31b and 32b may be attached to both the frame portion 31 and the leg portion 32.

[0058] The configurations of the above-described embodiments can be combined as much as possible.

Industrial Applicability

[0059] The present invention can be used for gas stoves.

Explanation of Reference Numerals

[0060] 1: Gas stove 20: Stove burner 24: Sensor 30: Cooking grate 31: Frame portion 31a1: Contact surface 31b: Cap 31b1: Contact surface 32: Leg portion 32a1: Contact surface 32b: Cap 32b1: Contact surface 33: Placing surface 40: Grill 42: Exhaust port 50: First top plate 50a: Upper surface 51: First hole 53: First frame 60: Second top plate (second top board) 60a: Upper surface (plate surface) 61: Second hole 63: Second frame (outer peripheral part) 64: Leaf spring (elastic member)

Claims

1. A first top plate having a first hole; A second top plate that is disposed on top of the first top plate and has a second hole through which the entire first hole is exposed in the disposed state; A burner that is exposed from the first hole and the second hole in a state where the second top plate is disposed on top of the first top plate and heats an object to be heated; A trivet that surrounds the burner and is disposed on the plate surface of the first top plate or the plate surface of the second top plate and has a placement surface on which the object to be heated is placed, and is provided with: The trivet is configured such that, without changing the vertical distance between the burner and the placement surface, when disposed on the plate surface of the first top plate, it abuts against the first top plate, and when disposed on the plate surface of the second top plate, it abuts against the second top plate, and has a contact surface whose vertical distance from the placement surface can be changed, a gas stove.

2. The trivet according to claim 1, having an annular frame portion and a plurality of leg portions fixed to the frame portion and arranged along the radial direction, and at least one of the frame portion and the leg portions having the contact surface.

3. A cap is attached to a portion of the frame portion and the leg portions having the contact surface, and the vertical distance of the contact surface from the placement surface is changed by attaching and detaching the cap. The gas stove according to claim 2.

4. Further comprising a detection unit that detects that the object to be heated is placed on the placement surface; The trivet according to any one of claims 1 to 3, wherein the vertical distance between the placement surface and the detection unit does not change when the trivet is disposed on the plate surface of the first top plate and when it is disposed on the plate surface of the second top plate.

5. Further comprising a grill and an exhaust port for exhausting combustion exhaust gas generated by the grill; The exhaust port is located vertically between the plate surface of the first top plate and the plate surface of the second top plate in a state where the second top plate is placed on top of the first top plate. The gas stove according to any one of claims 1 to 4.

6. The outer peripheral portion of the second top plate is fixed to the outer peripheral portion of the first top plate by an elastic member. The gas stove according to any one of claims 1 to 5.

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