JP7710396B2 - Gas stove - Google Patents

Description

The present invention relates to a gas stove.

A gas stove has a top plate and a trivet; the trivet is removable, but the top plate is not. Therefore, the top plate is usually replaced after a gas stove is purchased only when the top plate is damaged, making it impossible, difficult, or extremely undesirable to continue using it as a gas stove. Moreover, the replaced top plate is often the same as the one that was installed before the replacement, making it difficult to change the appearance of the top plate.

Patent Document 1 discloses a top plate cover that is placed on the top plate (referred to as the "top plate" in Patent Document 1) of an existing gas stove (referred to as the "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 the top plate cover is fixed to the top plate with silicone caulking, screws, etc.

JP 2006-313045 A

Because the burner of a gas stove is attached to the stove body, the position of the flame outlet from the burner remains the same and is at the same height relative to the top plate regardless of whether a top cover is used or not. On the other hand, the trivet is placed on the top plate when the top cover is not in use, and is placed on the top cover when the top cover is in use, so when the top cover is in use, the trivet is placed in a higher position by the thickness of the top cover. Heated objects such as pots are placed on the trivet to be heated, so when a top cover is used, the position of the heated object relative to the burner flame outlet becomes higher by the height of the top cover.

Gas stoves are usually designed to heat objects most efficiently when a trivet is placed on the top plate, and it is not assumed that a top plate cover will be placed on the top plate. Therefore, when heating objects using a top plate cover, there is a risk of reduced heating efficiency compared to when heating objects without using a top plate cover.

Some gas stoves are equipped with sensors that detect the presence or absence of a heated object, such as a pan, and detect the temperature of the heated object to control the heat. Such sensors detect the heated object by being pressed down by the heated object placed on the trivet. Therefore, if a top cover is used and the heated object is positioned higher in relation to the burner's flame port, the sensor may not be pressed down enough, causing the sensor to malfunction.

Therefore, there is a demand for a gas stove that can heat the heated object as efficiently as when a top cover is not used, even when a top cover is used.

The gas stove according to the present invention, which is intended to achieve the above object, is characterized by a first top plate having a first hole, a second top plate having a second hole that is placed on top of the first top plate and exposes the entire first hole when placed on top of the first top plate, a burner that is exposed from the first hole and the second hole when the second top plate is placed on top of the first top plate and heats the object to be heated, and a trivet that surrounds the burner and is placed on the surface of the first top plate or the surface of the second top plate and has a placement surface on which the object to be heated is placed, and the trivet has an abutment surface that is configured so that the vertical distance from the placement surface can be changed so that the trivet abuts the first top plate when placed on the surface of the first top plate and abuts the second top plate when placed on the surface of the second top plate without changing the vertical distance between the burner and the placement surface.

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

Another characteristic feature of the gas stove of the present invention is that the trivet has a circular frame and a number of legs fixed to the frame and arranged along the radial direction, and at least one of the frame and the legs has the abutment surface.

The above characteristic configuration allows the trivet to be stably supported.

Another characteristic feature of the gas stove according to the present invention is that caps are attached to the portions of the frame and legs that have the abutment surfaces, and the vertical distance of the abutment surfaces from the placement surface is changed by attaching or detaching the caps.

The above characteristic configuration allows the vertical distance of the contact surface from the support surface to be changed by the simple method of attaching and detaching the cap.

Another characteristic feature of the gas stove according to the present invention is that it further comprises a detection unit that detects that the object to be heated is placed on the placement surface, and the vertical distance between the placement surface and the detection unit does not change when the trivet is placed on the surface of the first top plate and when it is placed on the surface of the second top plate.

With the above characteristic configuration, the distance between the bottom surface of the heated object and the detection unit does not change, so the detection unit can function normally whether the trivet is placed on the surface of the first top plate or the surface of the second top plate.

Another characteristic feature of the gas stove of the present invention is that it further comprises a grill and an exhaust port for exhausting the combustion exhaust gas generated by the grill, and 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.

The above characteristic configuration allows the grill's combustion exhaust gas to be exhausted from the exhaust port whether the second top plate is in place or removed.

Another characteristic feature of the gas stove according to the present invention is that the outer periphery of the second top plate is fixed to the outer periphery of the first top plate by an elastic member.

The above characteristic configuration allows the second tabletop to be stably fixed to the first tabletop, and the second tabletop can be easily removed from the first tabletop.

The gas stove according to the present invention can heat the object to be heated as efficiently as when the top plate cover (second top plate) is not used.

1 is a perspective view of a gas stove according to a first embodiment; FIG. This is an oblique view of a trivet. 1 is an enlarged view of the vicinity of the burner of the gas stove in a first state. FIG. An enlarged view of the vicinity of the burner of the gas stove in the second state. FIG. 11 is an enlarged view of the vicinity of the burner of a gas stove in a first state according to a modified example. FIG. 11 is an enlarged view of the vicinity of the burner of the gas stove in the second state according to the modified example. FIG. 11 is an enlarged view of the vicinity of the burner of a gas stove in a first state according to a modified example. FIG. 11 is an enlarged view of the vicinity of the burner of the gas stove in the second state according to the modified example. FIG. 11 is an enlarged view of the vicinity of the burner of a gas stove in a first state according to a modified example. FIG. 11 is an enlarged view of the vicinity of the burner of the gas stove in the second state according to the modified example. FIG. 11 is an enlarged view of the vicinity of the burner of the gas stove according to the second embodiment in a first state. FIG. 11 is an enlarged view of the vicinity of the burner of the gas stove according to the second embodiment in a second state. FIG. 13 is a diagram showing a state in which the second top plate is fixed to the first top plate. FIG. 13 is a diagram showing a state in which the second top plate is fixed to the first top plate. FIG. 13 is a diagram showing a state in which the second top plate is fixed to the first top plate.

The following describes in detail an embodiment of a gas stove according to the present invention with reference to the drawings. Note that the embodiments described below are merely examples for explaining the present invention, and the present invention is not limited to these embodiments. Therefore, the present invention can be implemented in various forms without departing from the gist of the invention.

First Embodiment
As shown in Figs. 1 to 3, the gas stove 1 according to this embodiment is configured to include two burners (examples of burners) 20, 20 provided on the upper surface of the stove body 10, a circular trivet 30 corresponding to each burner 20, and a grill 40. The upper surface of the stove body 10 of the gas stove 1 is covered with a first top plate (an example of a first top plate) 50 made of glass that is rectangular when viewed in the vertical direction. In addition, the gas stove 1 has a second top plate (an example of a second top plate) 60 made of glass that is rectangular when viewed in the vertical direction and is placed on top of the first top plate 50. The first top plate 50 and the second top plate 60 have roughly the same shape, and are configured so that the outer periphery of the second top plate 60 is slightly larger than the outer periphery of the first top plate 50.

The gas stove 1 can be used with only the first top plate 50 without the second top plate 60, or with the second top plate 60 placed on top of the first top plate 50. Hereinafter, the state in which only the first top plate 50 is used will be referred to as the first state, and the state in which the second top plate 60 is placed on top of the first top plate 50 will be referred to as the second state. That is, in the first state, a user of the gas stove 1 will use the stove while visually checking the top surface (an example of a plate surface) 50a of the first top plate 50, and in the second state, will use the stove while visually checking the top surface (an example of a plate surface) 60a of the second top plate 60. The state shown in FIG. 1 is the second state. The second state of the gas stove 1 will be described below.

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 is exposed above the first top plate 50 and the second top plate 60 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. The burner ring 22 is fixed or placed in the first hole 51 of the first top plate 50 by a method such as gluing. 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 a heated object (not shown) such as a pot heated by the stove burner 20 and detects the temperature of the heated object to control the flame power protrudes through the burner cap 23 from the burner body 21.

As shown in FIG. 3, the trivet 30 has a circular metal frame 31 and multiple (six in this embodiment) metal legs 32 fixed to the frame 31 and arranged along the radial direction of the frame 31. The radially inner end of each leg 32 is fixed to the frame 31 by gluing, welding, or the like, and extends upward from the fixed point, extends horizontally in the radially outer direction from there, and further extends downward to reach the radially outer end (support portion 32a). The trivet 30 according to this embodiment is arranged around the first hole 51 so that the lower surface of the frame 31 abuts against the burner ring 22 and the abutment surface 32a1 of the radially outer support portion 32a of the leg 32 abuts against the first top plate 50. The frame 31 is configured to be positioned horizontally by a mechanism not shown when it abuts against the burner ring 22. The top surface of the leg 32 of the trivet 30 that extends horizontally in the radial outward direction is formed with a placement surface 33 on which the object to be heated is placed.

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 extension end of the exhaust pipe 41, is covered by an exhaust port cover 43. The amount of protrusion of the exhaust pipe 41 from the upper surface 50a of the first top plate 50 is such that the exhaust port 42 does not protrude beyond the upper surface 60a of the second top plate 60 when the second top plate 60 is placed on top of the first top plate 50. That is, in the second state, 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. As a result, in both the first and second states, the combustion exhaust gas of the grill 40 can be exhausted from the exhaust port 42. 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 with each other.

As described above, the gas stove 1 can be used in either the first or second state, and in that case, the trivet 30 can be used in either state. The trivet 30 according to this embodiment is configured so that the heightwise position of the mounting surface 33 of the trivet 30 relative to the flame port of the stove burner 20 does not change between the first and second states. The specific configuration will be described later.

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

Figure 4 shows an enlarged view of the vicinity of the stove burner 20 in the first state. In the first state, the burner ring 22 is attached to the upper surface 50a of the first top plate 50, and the frame part 31 of the trivet 30 is placed on top of it. A cap 32b is attached to the support part 32a of the leg part 32, and the abutment surface 32b1 of the cap 32b abuts against the upper surface 50a. At this time, the difference in height between the mounting 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 from the flame port of the stove burner 20 to the mounting surface 33 of the trivet 30 (the height of the flame) is configured to maximize the heating efficiency of the heated object and to allow the sensor 24 to function normally. The thickness of the burner ring 22 is thinner than X.

Figure 5 shows an enlarged view of the vicinity of the burner 20 in the second state. In the second state, the burner ring 22 is attached to the upper surface 50a of the first top plate 50, and the frame 31 of the trivet 30 is placed on top of the burner ring 22. The second top plate 60 has a second hole 61 that is larger than the outer diameter of the frame 31 of the trivet 30 and exposes the entire first hole 51, and is placed on top of the first top plate 50 via a packing 62. The cap 32b has been removed from the support portion 32a of the leg portion 32, and the support portion 32a is exposed. The abutment surface 32a1 of the support portion 32a abuts against 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 total thickness of the second top plate 60 and the packing 62 is configured to be the same as the height difference X between the mounting surface 33 of the trivet 30 and the upper surface of the sensor 24. In addition, the height difference between the abutment surface 32b1 of the cap 32b and the abutment surface 32a1 of the support portion 32a is also configured to be X (see FIG. 4). In other words, by removing the cap 32b, the vertical distance from the mounting surface 33 to the abutment surface 32b1 and the vertical distance from the mounting surface 33 to the abutment 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 mounting surface 33 of the trivet 30 and the upper surface of the sensor 24 is the same as in the first state, X. Therefore, the height (flame height) from the flame port of the burner 20 to the mounting surface 33 of the trivet 30 does not change, and even in the second state, the heating efficiency of the heated object is the same as in the first state, and the sensor 24 functions normally.

In this way, by providing a removable cap 32b on the support portion 32a of the trivet 30, the vertical distance from the mounting surface 33 of the trivet 30 to the contact surface 32a1 and the vertical distance from the mounting surface 33 to the contact surface 32b1 can be made different. As a result, the height (flame height) from the flame port of the burner 20 to the mounting surface 33 of the trivet 30 does not change, so that the gas stove 1 can be realized in which the heating efficiency of the heated object is equal in the first state and the second state and the sensor 24 functions normally. In addition, since the same trivet 30 can be used to set the first state and the second state, the second top plate 60 can be designed with a different color, pattern, material, etc. from the first top plate 50 and can be attached and detached from the gas stove 1, so that 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 if the second top plate 60 is damaged or soiled, the gas stove 1 can be continued to be used simply by replacing the second top plate 60. The second top plate 60 can also be used as a cover (top plate cover) for the first top plate 50.

[Modification of the first embodiment]
(1) Figures 6 and 7 show a gas stove 1 using a first top plate 50 made of enamel and a second top plate 60 made of enamel that are thinner than those in the first embodiment. In this modification, the burner ring 22 is not used, and instead, the vicinity of the first hole 51 of the first top plate 50 is raised upward by the thickness of the burner ring 22 to form a burner ring 52. In this modification, as shown in Figure 6, in the first state, the frame part 31 of the trivet 30 is placed on the burner ring 52. A cap 32b is attached to the support part 32a of the leg part 32, and the abutment surface 32b1 of the cap 32b abuts against the upper surface 50a. At this time, the height difference between the mounting surface 33 of the trivet 30 and the upper surface of the sensor 24 is configured to be X. In addition, the height (flame height) from the flame port of the stove burner 20 to the mounting surface 33 of the trivet 30 is configured to maximize the heating efficiency of the object to be heated and to allow the sensor 24 to function normally. The thickness of the burner ring 52 (the amount of rise from the upper surface 50a of the first top plate 50) is smaller than X.

7 shows an enlarged view of the vicinity of the burner burner 20 in the second state. In the second state, the frame 31 of the trivet 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 31 of the trivet 30 and exposes the entire first hole 51. In this modified example, the inner surface of the second hole 61 is folded back radially outward and placed on top of the first top plate 50. At this time, the second top plate 60 is configured to have a thickness of X including the folded back portion. The cap 32b is removed from the support portion 32a of the leg portion 32, and the support portion 32a is exposed, and the abutment surface 32a1 of the support portion 32a abuts against the upper surface 60a of the second top plate 60. The frame 31 is placed on the burner ring 52 as in the first state. The height difference between the abutment surface 32b1 of the cap 32b and the abutment surface 32a1 of the support portion 32a is also configured to be X (see FIG. 6). Therefore, even in the second state, the difference in height between the mounting surface 33 of the trivet 30 and the top surface of the sensor 24 is the same as in the first state, X. Therefore, the height from the flame port of the burner 20 to the mounting surface 33 of the trivet 30 (the height of the flame) does not change, so even in the second state, the heating efficiency of the heated object is the same as in the first state, and the sensor 24 functions normally.

By using this configuration, the same trivet 30 as in the first embodiment can be used even if the second top plate 60 is thin.

(2) Figures 8 and 9 show a gas stove 1 that differs 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, as in the first embodiment, the burner ring 22 is attached to the upper surface 50a of the first top plate 50, and the frame part 31 of the trivet 30 is placed on top of it. A cap 32b is attached to the support part 32a of the leg part 32, and the abutment surface 32b1 of the cap 32b abuts against the upper surface 50a. At this time, the difference in height between the mounting 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 from the flame port of the stove burner 20 to the mounting surface 33 of the trivet 30 (the height of the flame) is configured to maximize the heating efficiency of the heated object and to allow the sensor 24 to function normally.

9 shows an enlarged view of the vicinity of the 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 trivet 30 is placed on top of it. The second top plate 60 is placed on top of the first top plate 50 via a packing 62. The second top plate 60 of this modified example differs from the first embodiment in that the entire first hole 51 is exposed, but the second hole 61 is smaller than the outer diameter of the frame portion 31 of the trivet 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, so that the support portion 32a is exposed, and the abutment surface 32a1 of the support portion 32a abuts against the upper surface 60a of the second top plate 60. At this time, the total thickness of the second top plate 60 and the packing 62 is configured to be X. In addition, 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. 8). Therefore, even in the second state, the height difference between the mounting surface 33 of the trivet 30 and the upper surface of the sensor 24 is the same as in the first state, X. Therefore, the height from the flame port of the burner 20 to the mounting surface 33 of the trivet 30 (flame height) does not change, and even in the second state, the heating efficiency of the heated object is the same as in the first state, and the sensor 24 functions normally.

By configuring it in this way, the trivet 30 can be placed more stably in the second state than in the first state.

(3) In Figs. 10 and 11, a gas stove 1 is shown which is different from the first embodiment in that the burner ring 22 is not used, and instead the vicinity of the first hole 51 of the first top plate 50 is raised upward by the thickness of the burner ring 22 to form the burner ring 52, and which is different from the modified example (2) in that the thickness of the burner ring 52 is X. In this modified example, as shown in Fig. 10, in the first state, the frame part 31 of the trivet 30 is placed on the burner ring 52. A cap 32b is attached to the support part 32a of the leg part 32, and the abutment surface 32b1 of the cap 32b abuts against the upper surface 50a. At this time, the difference in height between the mounting 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 mounting surface 33 of the trivet 30 is configured to maximize the heating efficiency of the heated object and to allow the sensor 24 to function normally.

Figure 11 shows an enlarged view of the vicinity of the burner burner 20 in the second state. Even in the second state, the frame 31 of the trivet 30 is placed on the burner ring 52. The second top plate 60 of this modified example differs from modified example (2) in that the entire first hole 51 is exposed, but the second hole 61 is smaller than the outer diameter of the frame 31 of the trivet 30. In addition, the second top plate 60 of this modified example is placed on the first top plate 50 with the inner surface of the second hole 61 folded back radially outward. At this time, the thickness of the second top plate 60 including the folded back portion is configured to be X. Therefore, the frame 31 is placed across the burner ring 52 and the second top plate 60. The cap 32b is removed from the support portion 32a of the leg portion 32, so that the support portion 32a is exposed, and the abutment surface 32a1 of the support portion 32a abuts against the upper surface 60a of the second top plate 60. In addition, 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 mounting surface 33 of the trivet 30 and the upper surface of the sensor 24 is the same as in the first state, X. Therefore, the height from the flame port of the burner 20 to the mounting surface 33 of the trivet 30 (flame height) does not change, and even in the second state, the heating efficiency of the heated object is the same as in the first state, and the sensor 24 functions normally.

By configuring it in this way, even if the thickness of the second top plate 60 is thin, the same trivet 30 as in the first embodiment can be used, and in the second state, the trivet 30 can be placed more stably than in the first state.

Second Embodiment
Next, a gas stove 1 according to a second embodiment will be described with reference to Figures 12 and 13. In the description of this embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description of the same components will be omitted. The gas stove 1 according to the second embodiment has a different shape of the trivet 30 from that of the first embodiment.

In the trivet 30 of this embodiment, as shown in FIG. 12, the inner diameter of the frame 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 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 parts 31a protrude from the rear surface of the frame 31, and a cap 31b is removably attached to the support part 31a. Each of the plurality of legs 32 is formed so as to extend linearly from the frame 31 in the radially outward direction, and the radially outward end does not abut the upper surface 50a of the first top plate 50.

Figure 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 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 31, and the contact surface 31b1 of the cap 31b is in contact with the upper surface 50a. At this time, the difference in height between the mounting 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 from the flame port of the stove burner 20 to the mounting surface 33 of the trivet 30 (the height of the flame) is configured to maximize the heating efficiency of the heated object and to allow the sensor 24 to function normally.

Figure 13 shows an enlarged view of the vicinity of the burner 20 in the second state. In the second state, the frame 31 of the trivet 30 is placed on the upper surface 60a of the second top plate 60. In this embodiment, the second top plate 60 has a second hole 61 that is larger than the outer diameter of the burner ring 22 and is equal to or smaller than the inner diameter of the frame 31, with the entire first hole 51 exposed, and is placed on top of the first top plate 50 via a packing 62. The cap 31b is removed from the support portion 31a of the frame 31, so that the support portion 31a is exposed, and the abutment surface 31a1 of the support portion 31a abuts against the upper surface 60a of the second top plate 60. At this time, the total thickness of the second top plate 60 and the packing 62 is configured to be the same as the height difference X between the abutment surface 31a1 of the support portion 31a and the abutment surface 31b1 of the cap 31b. In addition, 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 mounting surface 33 of the trivet 30 and the upper surface of the sensor 24 is the same X as in the first state. Therefore, the height from the flame port of the burner 20 to the mounting surface 33 of the trivet 30 (flame height) does not change, and even in the second state, the heating efficiency of the heated object is the same as in the first state, and the sensor 24 functions normally.

[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 placed on top of the first top plate 50 will be described.

(1) As shown in FIG. 14, a first frame (an example of an outer periphery) 53 that conforms to the outer shape of the first top plate 50 and is placed on the kitchen worktop 70 is attached to the underside 50b of the first top plate 50 via a gasket 55. Recesses 54 are formed near the four corners of the outer periphery of the first frame 53 that is rectangular when viewed vertically (e.g., eight in total, two at each corner).

Similarly to the first top plate 50, the second top plate 60 has a second frame (an example of an outer periphery) 63 attached to the underside 60b via a packing 65, which conforms to the outer shape of the second top plate 60 and is placed on the kitchen worktop 70. Leaf springs (an example of an elastic member) 64 made of elastic metal are attached to the locations near the four corners of the inner periphery of the second frame 63 and corresponding to the recesses 54 (eight locations in this embodiment).

As described above, the first top plate 50 and the second top plate 60 have roughly 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 placed on top of the first top plate 50. When the second top plate 60 is placed on top of the first top plate 50, the leaf spring 64 is deformed by the elastic force, and then restored to its original shape and fitted into each recess 54 of the first frame 53, thereby fixing the second top plate 60 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 the second top plate 60 can be easily removed from the first top plate 50. In addition, the second top plate 60 has a second frame 63 that abuts against the kitchen worktop 70 via a packing 65, so when the second top plate 60 is placed on top of the first top plate 50, the recess 54 of the first top plate 50 and the leaf spring 64 of the second top plate 60 are not visible from the outside, and do not spoil the aesthetic appearance of the gas stove 1.

In the configuration shown in FIG. 14, the sides of the first top plate 50 and the second top plate 60 are exposed. Therefore, especially in glass top plates, the second top plate 60 can be stably fixed to the first top plate 50 without compromising the aesthetic appearance.

(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 in (1) above, but the other points are the same. In the configuration shown in FIG. 15, if the first top plate 50 and the second top plate 60 are made of glass, polishing of the side surfaces is not necessary, and therefore the configuration can be made inexpensively.

(3) Figure 16 shows a configuration in which the first top plate 50 and the second top plate 60 are made of enamel. If the first top plate 50 and the second top plate 60 are made of enamel, the base material is metal, so there is no need to attach the first frame 53 and the second frame 63 as separate members, and the first frame 53 and the second frame 63 can be formed by bending the ends of the first top plate 50 and the second top plate 60. 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 is elastic.

Other embodiments
(1) In the first embodiment and its modified example, the support portion 32a of the trivet 30 is provided at the extending end of the leg portion 32, but this is not limited to this. For example, if the leg portion 32 is shaped so that it extends radially outward and then bends back radially inward, the support portion 32a may be provided at the point where the leg portion 32 extends radially outward, rather than at the extending end of the leg portion 32.

(2) In the second embodiment, the frame 31 of the trivet 30 is provided with a support portion 31a, and the radially outer end of the leg portion 32 is spaced apart from the first top plate 50, but this is not limited to the above. In addition to the frame 31, the leg portion 32 may also be configured to have a support portion 32a at its radially outer end.

(3) In the above embodiment and its modified examples, the exhaust pipe 41 of the grill 40 protrudes upward from the upper surface 50a of the first top plate 50, but this is not limited to the above. The exhaust pipe 41 may not protrude from the first top plate 50. In this case, if an exhaust pipe protruding downward is provided on the underside of the exhaust port cover 43 and connected to the exhaust pipe 41, the combustion exhaust gas generated when cooking on the grill 40 can be exhausted from the exhaust port cover 43.

(4) In the above embodiments and their variations, the caps 31b, 32b are attached to either the frame 31 or the legs 32. However, depending on the configuration of the trivet 30, the caps 31b, 32b may be attached to both the frame 31 and the legs 32.

The configurations of each of the above embodiments can be combined as much as possible.

This invention can be used in gas stoves.

1: Gas stove 20: Stove burner (burner)
24: Sensor 30: Trivet 31: Frame 31a1: Contact surface 31b: Cap 31b1: Contact surface 32: Leg 32a1: Contact surface 32b: Cap 32b1: Contact surface 33: Placement surface 40: Grill 42: Exhaust port 50: First top plate (first top plate)
50a: Top surface (plate surface)
51: First hole 53: First frame (outer periphery)
60: Second top plate (second top plate)
60a: Top surface (plate surface)
61: Second hole 63: Second frame (outer periphery)
64: Leaf spring (elastic member)

Claims (6)

a first top plate having a first hole;
A second top plate is placed on the first top plate and has a second hole through which the first hole is entirely exposed when the second top plate is placed on the first top plate.
a burner that is exposed from the first hole and the second hole and heats an object to be heated in a state in which the second top plate is disposed on top of the first top plate;
A trivet is provided surrounding the burner and disposed on the plate surface of the first top plate or the plate surface of the second top plate, and having a placement surface on which the object to be heated is placed;
The gas stove has an abutment surface configured so that the vertical distance from the mounting surface can be changed, so that the trivet abuts against the first top plate when placed on the surface of the first top plate, and abuts against the second top plate when placed on the surface of the second top plate, without changing the vertical distance between the burner and the mounting surface. The gas stove according to claim 1, wherein the trivet has a circular frame and a plurality of legs fixed to the frame and arranged in a radial direction, and at least one of the frame and the legs has the abutment surface. The gas stove according to claim 2, wherein caps are attached to the portions of the frame and legs that have the abutment surfaces, and the vertical distance of the abutment surfaces from the placement surface is changed by attaching or detaching the caps. A detection unit that detects that the object to be heated is placed on the placement surface,
A gas stove as described in any one of claims 1 to 3, wherein the vertical distance between the placement surface and the detection part does not change when the trivet is placed on the surface of the first top plate and when it is placed on the surface of the second top plate. Further comprising a grill and an exhaust port for exhausting the combustion exhaust gas generated by the grill,
A gas stove as described in any one of claims 1 to 4, wherein 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. The gas stove according to claim 1 , wherein an outer periphery of the second top plate is fixed to an outer periphery of the first top plate by an elastic member.