JPH08303786A - Anti-flame leak type oven - Google Patents

Abstract

PURPOSE: To enable the using of a pot of any size, large or small, while preventing the lowering of heat efficiency by providing a step part on the inner circumferential surface of a trivet with a hollow space extruding to the center of the trivet and arranging window holes in a circle communicating with the inside of the hollow space each on the upper side and on the lower side in the inner circumferential surface of the trivet sandwiching the step part. CONSTITUTION: A trivet 2 is formed in a ring and made hollow inside by a press molding. When a pot P is placed on the trivet 2, the top surface 21 thereof contacts the pot bottom PB over the entire circumference thereof. A step part 22 is formed on the inner circumference of the trivet 2 extruding to the center of the trivet 2 and a plurality of window holes 24a are made in the circumferential direction on the inner circumferential surface 23a positioned above the step part 22 at almost an equal interval and a plurality of other window holes 24b in the circumferential direction on the inner circumferential surface 23b positioned below the step part 22. The diameter of the opening of the upper window holes 24a is set larger than that of the lower window holes 24b. A plurality of cooling windows 26 are opened on the outer circumferential surface 25 of the trivet 2 at almost an equal interval.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flame leakage prevention type stove in which a bottom of a pot is provided with a ring-shaped Gotoku that can come into contact with the pot over its entire circumference so that a flame from a burner does not leak to the outside of the Gotoku. Regarding

[0002]

2. Description of the Related Art In Gotoku, in which a plurality of claw-shaped projections are erected,
A gap is formed between the bottom of the pot and the top plate, and the flame from the burner or hot air after the combustion of the flame is completed leaks to the outside of Gotoku through the gap. Then, the leaked flame or hot air heats the handle of the pot, which causes a problem that it is difficult to hold when removing the pot from Gotoku. Therefore, an annular stove that has an annular Gotoku that can make contact with the bottom of the pot over the entire circumference is provided on the top plate so that flames and hot air do not leak to the outside of the Gotoku so that the pot handle is not heated. Conceivable. However, in order to prevent the flame and hot air from leaking to the outside in this way, it is necessary to separately provide a mechanism for discharging the exhaust gas generated by the combustion of the burner. Therefore, it is conceivable that a window hole is opened on the surface of the top plate exposed to the inside of Gotoku and the burner exhaust gas is discharged from the window hole through an internal space provided below the top plate. .

[0003]

However, in the above-described stove equipped with the ring-shaped Gotoku, a pot smaller than the inner diameter of the Gotoku fits inside the Gotoku and cannot be used. On the other hand, if you use Gotoku with a small inner diameter, you can place a large pot or a small pot on Gotoku, but the area where the flame contacts the bottom of the pot narrows, and if you use a large pot to cook, the thermal efficiency will decrease. Defect occurs.

In view of the above problems, it is an object of the present invention to provide a flame leakage prevention type stove which can be used in any large or small pot and which does not reduce the thermal efficiency.

[0005]

In order to achieve the above-mentioned object, the invention of claim 1 is provided with an annular Gotoku which can be in contact with the bottom of the pot over the entire circumference, and the flame from the burner is Gotoku. In the stove that is prevented from leaking to the outside of the, the Gotoku is formed hollow, the hollow space of the Gotoku is communicated with the exhaust port through the exhaust passage, and the hollow space is projected toward the center of the Gotoku. It is characterized in that a step portion is provided on the inner peripheral surface of Gotoku, and a window hole communicating with the hollow space is provided around the inner peripheral surface of Goutoku on the upper side and the lower side with the step portion interposed therebetween.

[0006] The invention of claim 2 is a stove in which the bottom of the pot is provided with an annular Gotoku that can come into contact with the pot over the entire circumference so that the flame from the burner does not leak to the outside of the Gotoku. A window which is formed in a hollow shape and communicates the hollow space of the Gokutoku with an exhaust port through an exhaust passage, and the inner peripheral surface of the Gokutoku is formed in a funnel shape which is downwardly sunk, and which communicates with the hollow space. It is characterized in that holes are placed around the inner surface of Gotoku in multiple steps.

A flame leakage prevention type stove.

According to the third aspect of the present invention, there is provided a ring-shaped Gotoku capable of contacting the bottom surface of the pot over the entire circumference thereof, so that the flame from the burner is prevented from leaking to the outside of the Gotoku. A window which is formed in a hollow shape and communicates the hollow space of the Gokutoku with an exhaust port through an exhaust passage, and the inner peripheral surface of the Gokutoku is formed in a funnel shape which is downwardly sunk, and which communicates with the hollow space. It is characterized in that the hole is formed in the shape of a longitudinal slit in the vertical direction and is provided around the inner peripheral surface of Gotoku.

According to a fourth aspect of the present invention, in the first or second aspect of the invention, an annular eave is provided which is located above each of the window holes and has an inner diameter smaller than the circumferential diameter of each window hole. It is characterized by that.

The invention of claim 5 is the invention of claims 1 to 4.
In any one of the above aspects, the sum of the opening areas of the window holes along the circumferential direction is set so as to increase toward the upper side.

The invention of claim 6 is the first to fifth aspects of the invention.
In any one of the inventions, an exhaust fan for sucking exhaust gas from the window hole and forcibly exhausting the exhaust gas is provided, and the height of the pan bottom is detected,
It is characterized by having control means for performing at least one of increasing and decreasing the burner combustion amount and increasing and decreasing the number of revolutions of the exhaust fan according to the height of the bottom of the pan.

[0012] The invention of claim 7 is from claim 1 to claim 6.
In any one of the above-mentioned inventions, the burner is an internal flame hole type ring burner in which flame holes are circumferentially provided in an annular shape.

[0013]

According to the first aspect of the present invention, a pot larger than the inner diameter of Gotoku is placed on the upper surface of Gotoku, and a pot smaller than the inner diameter of Gotoku is placed on the step. Then, when the pot is placed on the top of Gotoku, the combustion exhaust of the burner hits the bottom of the pot and diffuses radially thereafter, so it is discharged from the window hole near the bottom of the pot. Also,
When the pot is placed on the step, the combustion exhaust gas is discharged through the lower window hole provided on the lower side of the step.

In the invention of claim 2, the large pot is placed on the upper surface of Gotoku as in the invention of claim 1, but since the inner peripheral surface of Gotoku is formed in a funnel shape as described above, A pot with a diameter smaller than the inner diameter of the upper surface is placed on the inner peripheral surface. And
When the pot is placed on the top of Gotoku, the combustion exhaust from the burner is discharged mainly through the topmost window hole closest to the pot bottom.
Further, when the pot is placed on the inner peripheral surface, the combustion exhaust gas is discharged through the window hole located below the pot bottom.

When the inner surface of Gotoku is formed in a funnel shape as in the second aspect of the invention, the pot is placed at any position on the inner surface depending on the diameter of the pot. In this case, when the window hole is formed in the shape of a slit that is long in the vertical direction as in the invention of claim 3, the positional relationship between the window hole and the pan bottom is always constant regardless of the position of the pan, and A window hole can be opened at the position closest to the bottom of the pan.

By the way, when a window hole is formed on the inner peripheral surface of Gotoku, the broth spilled from the pot easily enters the Gotoku area through the window hole. In this case, when the eaves are provided so as to cover the window holes as in the invention of claim 4, it is possible to prevent the broth from entering the window holes, and it is also possible to place the pot on the eaves. .

By the way, since the flame hits the bottom of the pot and spreads out radially along the bottom of the pot, the air is mainly exhausted from the window hole near the bottom of the pot, and when the flame (hot air) is exhausted from the window hole near the bottom of the pot in this way. The flame is in contact with the bottom of the pot for a longer time, improving the thermal efficiency. Therefore, in the invention of claim 5, the total opening area of the window holes is made wider toward the upper side so that the exhaust air is exhausted from the upper side as much as possible to further improve the thermal efficiency.

When the pot is placed inside the Gotoku and the combustion exhaust must be performed only through the lower window hole, if the combustion amount is too large, the secondary air for combustion is sufficiently sucked due to insufficient exhaust. This is not possible and combustion failure is likely to occur. In this case, according to the invention of claim 6, when the pot is placed inside the Gotoku, when the combustion amount is too large, the rotation speed of the exhaust fan is increased or the maximum combustion amount of the burner is compulsorily reduced to perform combustion. It is possible to prevent defects, and even if a pot is placed on a step or sub-Gotoku, the thermal efficiency is low by rotating the exhaust fan at the same high rotation speed as when it was placed on the top of Gokutoku. In this case, the rotation speed of the exhaust fan can be reduced to prevent the thermal efficiency from decreasing.

When the inner flame hole type ring burner is used as in the seventh aspect of the invention, the flame from the inner flame hole type ring burner rises while gathering toward the center and hits the bottom of the pot, and further rise is limited. When the pot is placed on the top of Gotoku, the flame rises all the way to the bottom of the pot and then spreads radially along the bottom of the pot, so most of the exhaust is in the upper stage. It is exhausted from the window hole of the, and the thermal efficiency is further improved.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS. 1 to 3, reference numeral 1 denotes a stove main body, and a virtue 2 is provided on the upper surface of a peripheral portion of an opening 11 formed in an inner top plate 10a which is attached to and detached from a top plate 10b on the upper surface of the main body 1. And the cylindrical combustion casing 3 was hung vertically on the lower surface of the peripheral edge of the opening 11, and the burner 4 was housed in the combustion casing 3.

As shown in FIG. 2, the Gotoku 2 is formed in an annular shape, and is press-formed to have a hollow inside. When the pan P is placed on the Gotoku 2, the upper surface 21 is in contact with the pan bottom PB over the entire circumference. Further, a step portion 22 is formed on the inner circumference of the Gotoku 2 so as to project toward the center of the Gotoku 2.
A plurality of window holes 24a are formed in the inner peripheral surface 23a located above 2 at substantially equal intervals in the circumferential direction, and a plurality of window holes 24a located below the step portion 22 are arranged at substantially equal intervals in the circumferential direction. Window hole 2
4b has been opened. The opening diameter of the upper window hole 24a is set to be larger than the opening diameter of the lower window hole 24b. Further, a plurality of cooling windows 26 are also provided on the outer peripheral surface 25 of the Gotoku 2 at substantially equal intervals. A partition plate 27 is provided inside the Gotoku 2 to divide the hollow space of the Gotoku 2 into the inside and the outside. However, although it is not necessary to provide the partition plate 27, when the partition plate 27 is not provided, it is desirable to open the two so that the window holes 24a and 24b and the cooling window 26 do not coincide with each other. Further, the step portion 22 is provided with a plurality of grooves 22a which are inclined downward toward the inside, and when boiled juice or the like spills inside the Gotoku 2, the juice 22 gathers in the grooves 22a, and then a juice saucer (not shown) provided below the burner 4 I tried to fall. The groove 22a is provided so as to be aligned with the upper window hole 24a but not to be aligned with the lower window hole 24b. By providing in this way, when the pan P is placed on the step portion 22, the exhaust gas that leaks along the groove 22a is not sucked from the window hole 24a in the upper step and leaks to the outside air. On the other hand, the broth collected in the groove 22a. Is the lower window hole 24b
Therefore, it is possible to prevent the inside of Gotoku 2 from entering.

The burner 4 is a flame hole 4 opening inward.
It is composed of an internal flame hole type ring burner that is installed around 0,
In the combustion casing 3, the burner 4 was fitted in the opening at the upper end of the bottomed cylindrical support frame 42 inserted with a gap 41 around it. The upper portion of the combustion casing 3 projects inward from the flame hole 40 to form an overhang portion 30, and the overhang portion 30 and the burner 4 are provided.
A secondary air passage 41a communicating with the gap 41 is formed between and. A protective cylinder 44 having a predetermined gap 45A between it and the outer circumference of the thermal head 45, which is biased upward by the spring 45c, is held by the thermal head 45, and the protective cylinder 44 is attached to the bottom plate portion of the support frame 42. When the pan P is placed on the Gotoku 2 by inserting it vertically through the opening 43 in the center with a gap, the pan bottom PB
When the thermal head 45 is pressed against and the overheating of the pan bottom PB occurs, the thermal head 45 detects the temperature of the pan bottom PB and closes the electromagnetic safety valve 74 through the control device 7 to stop the combustion of the burner 4. I was able to do it. The thermal head 45 has a spring 45 attached to a bracket 42a extending below the support frame 42.
It is held via c and the rod 45a. Therefore,
A predetermined interval 44A is always secured between the upper end of the protective cylinder 44 and the upper end of the thermal head 45, and even if the pan P is placed on the step 22, the upper end of the protective cylinder 44 is separated from the pan bottom PB by the predetermined interval 44A. There is no contact. The air sucked from the lower end opening of the protection cylinder 44 and rising in the protection cylinder 44 is protected by the protection cylinder 44.
Through the gap 45A between the heat sensitive head 45 and
Radiation is emitted from 4A to cool the thermal head 45 and prevent the flame F from coming into direct contact with the thermal head 45, thereby preventing the thermal head 45 from detecting the temperature of the flame F. The secondary air for combustion is introduced into the combustion casing 3 from the secondary air passage 41a, the gap between the opening 43 and the protective cylinder 44, and the opening 46 formed in the bottom plate portion of the support frame 42. A hole 44a is formed in the lower part of the peripheral surface of the protective cylinder 44, and the air sucked from the lower end opening of the protective cylinder 44 has a portion of the hole because the air passage area is narrowed by the gap 45A. 44a from the protective cylinder 44 to the outside of the protective cylinder 44 to form secondary air for combustion.
The air is raised along the outer peripheral surface of the protective cylinder 44 so that the flame F does not come into direct contact with the protective cylinder 44, and the protective cylinder 44 itself is air-cooled when passing through the hole 44a. In the figure, 47 is a spark plug and 48 is a misfire sensor. The misfire sensor 48 is composed of a thermocouple and holds the electromagnetic safety valve 74 in an open state by a thermoelectromotive force. When the flame F misfires, the electromagnetic safety valve 74 is closed. Further, as described above, the thermal head 45 is fixedly supported on the upper end of the rod 45a, and the rod 45a is mounted on the thermal head 4a.
Go up and down with 5. A flange 45b is attached to the lower part of the rod 45a. On the other hand, the flange 4
In the vicinity of 5b, two micro switches 71 and 72 are arranged vertically with a predetermined interval. The predetermined interval between the two microswitches 71 and 72 is the upper surface 21 of Gokutoku 2 and the step portion 2.
2, the micro switch 71 is turned on by the flange 45b when the pot P is placed on the upper surface 21 of the Gotoku 2 as shown in FIG. When mounted, the flange 45b is lowered by the same distance as the step, and the micro switch 72 is turned on.
Also, both micro switches 71 and 72 are both control devices 7.
The control device 7 is connected to
From the on / off state of No. 2, whether the pot is placed on the upper surface 21 or step 22 of Gotoku,
It is possible to detect that no pan is placed on either the 1 or the step portion 22. The window hole 24a and the window hole 24
A temperature sensor is provided near the inside of b, and when the pan P is placed on the upper surface, both temperature sensors detect a high temperature, and the step 2
If only the sensor on the side of the window hole 24b detects the high temperature when the pan is placed, and both sensors detect the low temperature when the pan is not placed, the presence or absence of the pan P and the placement of the pan P are detected. You may make it detect a position.

The combustion casing 3 has an inner-outer double wall structure, and a space between the double walls of the combustion casing 3 is inserted through an opening 31 provided in an inner top plate 10a fitted on the upper surface of the combustion casing 3. The exhaust passage 5 that communicates with the hollow space of Gotoku 2 is used. The exhaust passage 5
Is communicated with an exhaust port 50 opened at the back of the top plate 10b, and an exhaust fan 6 is provided in the exhaust passage 5 so that forced exhaust can be performed. The combustion casing 3 is formed by stacking the inner top plate 10a on the upper opening of the casing 3a as shown in FIG. 3, and engages with the top plate 10b and the Gotoku 2 is arranged on the upper surface. The inner top plate 10a may be integrally formed with the top plate 10b, or the inner top plate 10a may be integrally formed with the Gotoku 2.

When cooking is started, it is desirable that the burner 4 not be ignited when the pot P is not placed on the Gotoku 2. The control device 7 detects the descent of the thermal head 45 due to the placement of the pan P by turning on one of the micro switches 71 and 72, and pushes the fire extinguisher button B while the pan is placed. When the point fire extinguishing switch S is turned on, the exhaust fan 6 is activated and the spark plug 4
A spark was discharged between the burner 7 and the burner 4 to ignite it. When the burner 4 is ignited by the spark ignition, the flame F once rises while gathering toward the center as described above.
At this time, since the air is rising along the outer peripheral surface of the protective cylinder 44, the flame F does not come into direct contact with the protective cylinder 44. Further, since the air introduced through the passage 41a is blown toward the flame F from above the flame hole 40, the flame F is suppressed from above, and the flame F does not contact the peripheral surface of the opening 11. Also, the flame F does not spread radially until the flame F comes into contact with the pan bottom PB. Therefore, for example, when the pot P is placed on the upper surface 21 of Gotoku, when the flame F hits the pot bottom PB and further rise is prevented, it spreads radially along the pot bottom PB. Then, by the operation of the exhaust fan 6, the air is mainly sucked into the exhaust passage 5 through the upper window hole 24a. Particularly in this embodiment, the overhanging portion 30 is formed so that the diameter of the opening 11 is smaller than the diameter of the flame hole 40, and the total opening area of the upper window holes 24a is larger than the total opening area of the lower window holes 24b. The opening diameter of the window hole 24a so that
Since it is larger than the opening diameter of b, the flame F bypasses the overhanging portion 30 and once rises while gathering in the center. Then, since it spreads radially along the pan bottom PB toward the window hole 24a, the time during which hot air contacts the pan bottom PB can be lengthened and the broth can be prevented from directly contacting the flame holes 40. The opening diameter of the lower window hole 24b is the same as the upper window hole 2
Since it is smaller than the opening diameter of 4a, the amount of suction of the exhaust gas is small, so that most of the flame F flows toward the window hole 24a, and the combustion of the flame F is completed and becomes hot air during the flow. When the hot air approaches the window hole 24a, the stepped portion 22 narrows the width of the passage PA through which the hot air passes in the vertical direction, and the hot air contacts the bottom PB of the pot until just before being sucked into the window hole 24a, and cooks the food in the pot P. To heat.

The hollow space of Gotoku 2 is divided into an inner space 2A and an outer space 2B by the partition plate 27, and the hot air sucked through the window hole 24a enters the inner space 2A. Then, the hot air hits the partition plate 27 and then flows into the exhaust passage 5 through the opening 31.
On the other hand, since the spaces 2A and 2B both have a negative pressure due to the operation of the exhaust fan 6, the outside air can flow from the cooling window 26 to the space 2
Introduced in B. In this way, the hot air hardly enters the space 2B and the outside air is introduced.
Even if the burner 4 is burning, the outer part of is cooled by the air and does not become hot. Then, the air in the space 2B flows into the exhaust passage 5 through the opening 31 together with the hot air in the space 2A.

When cooking with a pan having a diameter smaller than that of the inner peripheral surface 23a, the pan is placed on the step 22. In this case, the flame F collides with the pot bottom PB and becomes hot air that spreads radially along the pot bottom PB and is sucked into the window hole 24b provided in the inner peripheral surface 23b of the step portion 22. In this state, the window hole 24
Although a is exposed to the atmosphere, there is no problem because the window hole 24a functions to suck in cooling air like the cooling hole 26. By the way, when a small-diameter pot is used, since the area where the flame and hot air contact the bottom of the pot is small, the micro switch 72 is turned on and the control device 7 issues an instruction to reduce the opening degree of the control 73 and the maximum combustion of the burner. It is desirable to limit the amount and make the amount of combustion appropriate. Further, instead of dealing with the problem by reducing the combustion amount, the exhaust fan 6 is controlled via the control device 7.
It is also possible to increase the number of rotations of No. 1 to increase the amount of hot air sucked in through the window hole 24b. By the way, such a burner 2
The increase / decrease control of the combustion amount and the rotation speed control of the exhaust fan 6 are performed by the control device 7 depending on whether the pan is placed on the upper surface 21 or the step portion 22. It should be noted that when the pan is not placed on either the upper surface 21 or the step portion 22 and both of the microswitches 71 and 72 are turned off, the fire is extinguished or the combustion amount is reduced. When the point fire extinguishing switch S is turned off, the fire is extinguished, but when it is turned on, the micro switch 7
It is re-ignited by re-turning on any of the 1.72, or the throttle for the combustion amount is released.

FIG. 4 shows another embodiment. In this embodiment, the inner peripheral surface 23 of the Gotoku 2 is formed in a funnel shape that fits downward, and the inner peripheral surface 23 has two upper and lower window holes 24a.・ I laid 24b around. Further, the inner peripheral surface 23 has a groove 2 which is long in the vertical direction.
4c is provided, and after the spilled juice and the like spilled from the pan P is collected in the groove 24c, it is made to fall on a juice saucer (not shown) provided below the burner 4. The groove 24c is provided so as to match the upper window hole 24a but not the lower window hole 24b. By providing in this way, the groove 24c
Exhaust that leaks along the passage is sucked from the upper window hole 24a and does not leak to the outside air. On the other hand, it is possible to prevent the broth collected in the groove 24c from entering the inside of Gotoku 2 through the lower window hole 24b. . In this case, since the height of the pan changes steplessly depending on the diameter of the pan, the vertical position of the thermal head 45 is detected steplessly, and the burner is controlled by the controller 7 based on the detected value. It is desirable to proportionally control the combustion amount of No. 4 and the rotation speed of the exhaust fan 6.

Further, as shown in FIG. 5, both window holes 24a.
The ring-shaped eaves 8a and 8b located between 24b are detachably provided. The eaves 8b are formed so that the inner diameter is smaller than the circumferential diameter of the window hole 24b so as to cover the lower window hole 24b from above, and the upper eave 8b is provided so as to cover the upper window hole 24a from above. An annular eave 8a having an inner diameter smaller than the peripheral diameter of the window hole 24a was detachably placed on the upper surface 21 of the Gotoku 2. Therefore, the large pot is placed on the upper eaves 8a, and the smaller pot is placed on the lower eaves 8b. Also in this embodiment, the opening diameter of the upper window hole 24a is set to be larger than that of the lower window hole 24b. Further, in the present embodiment, since the window holes 24a, 24b are covered with the eaves 8a, 8b, there is no concern that spilled juice will flow into the window holes 24a, 24b.
The eaves 8a and 8b may be detachably attached to the Gotoku 2 as described above, but may be integrally formed. Also,
In this case, since the broth is guided by the eaves 8a and 8b, the groove 24c is not provided. Although all the inner peripheral surfaces 23 are formed in a funnel shape, it is also possible to form a part that is vertically continuous from the upper surface 21 and form a funnel shape underneath. In that case, a window hole 24a is opened in the vertical part. It is desirable to do.

Further, as shown in FIG. 6, the window holes may not be provided in two upper and lower stages, but slit-shaped window holes 24d that are long in the vertical direction may be provided. In this case, the window hole 24
The width of d becomes wider as it goes up, and the window hole 24d
The total area of the opening areas along the circumferential direction is set to increase as it goes upward. Further, the grooves 24e are provided so as to alternate with the window holes 24d, and the windows 24f connected to the inner space of the Gokutoku 2 are formed at the upper ends of the grooves 24e, so that the exhaust gas flowing along the grooves 24e is sucked into the outside air. Prevented exhaust gas from leaking. In addition, the circumference of the opening 31 is rounded up, and a partition plate 27a is provided to allow the simmered juice that has entered the internal space of the Gotoku 2 through the slit-shaped window hole 24d to be opened 31.
So that it does not enter the exhaust passage 5 through the.

Further, in each of the above-mentioned embodiments, since the annular burner which opens toward the center is used, the flame is radially generated as compared with the case where a normal burner having a flame hole opening toward the outside is used. Before spreading, the heat gathers inside and the time for flames and hot air to contact the bottom of the pot can be lengthened, and thermal efficiency can be improved. In addition, by tilting the flame blowing direction of the flame hole at a predetermined angle laterally with respect to the center of the burner, the flow of flame and hot air inside Gotoku 2 becomes a turbulent turbulent flow and the time during which the flame or hot air contacts the pot bottom. Can be further extended to further improve the thermal efficiency.

By the way, in each of the above embodiments, the window hole 24a
・ Although 24b was left open, the window hole 24
A shutter for individually opening and closing a and 24b is provided in Goutoku 2, and when the pan P is placed on the upper surface 21, the lower window hole 24b
May be closed, and conversely, when the pan is placed on the stepped portion 22 or the eaves 8b, the upper window hole 24a may be closed. The opening / closing operation of the shutter may be performed manually or electrically.

By the way, in the embodiment shown in FIGS. 1 to 3, the step portion is provided in one and the window holes are formed in the upper and lower two steps.
A plurality of steps may be provided, and window holes may be provided above and below each step, respectively, and in the embodiment shown in FIG. 4 or 5, the window holes may be provided in three or more steps above and below.

In the above embodiment, the one-pot stove has been described, but the present invention may be applied to a gas stove having two or more stoves or a grill inside. Further, although the internal flame hole type ring burner is used in each of the above-described embodiments, other types of burners such as an external flame burner having a flame hole provided on the outer peripheral surface and an upper flame burner having a flame hole provided on the upper surface are used. May be used. In each of the embodiments shown in FIGS. 1 to 5, the opening diameter of the upper window hole 24a is made larger than the opening diameter of the lower window hole 24b so that the total opening area of the window holes along the circumferential direction is increased. Is wider toward the upper side, but the total opening area may be adjusted by the number of window holes having the same opening diameter.

[0034]

As is apparent from the above description, the upper and lower window holes are formed on the inner peripheral surface of Gotoku, and the stepped portion is provided between both window holes, or the inner peripheral surface of Gotoku is funnel-shaped. Since it is formed into a small pot, it can be used by placing it on a stepped part or a funnel-shaped inner surface, and when using a large pot, it is possible to secure a large area in contact with flames and hot air, so thermal efficiency is improved. Does not decrease.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of an embodiment of the present invention.

Figure 2: Perspective view of Gotoku

FIG. 3 is a partially enlarged view of FIG. 1 showing details of Gotoku.

FIG. 4 is a partially enlarged view showing the configuration of the second embodiment of Gotoku.

FIG. 5 is a partially enlarged view showing the configuration of the third embodiment of Gotoku.

FIG. 6 is a partially enlarged view showing the configuration of the fourth embodiment of Gotoku.

[Explanation of symbols]

 1 Main Body 2 Gotoku 4 Burner 5 Exhaust Passage 6 Exhaust Fan 7 Control Device 8a Eaves 8b Eaves 22 Steps 24a Window Holes 24b Window Holes 26 Cooling Window 44 Protective Cylinder 45 Thermal Head P Pan

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kohei Kobayashi 3-28-70-810 Senju Apartment, Minamisenju, Arakawa-ku, Tokyo (72) Inventor Masao Aramatsu 2-26 Fukuzumicho, Nakagawa-ku, Nagoya, Aichi Prefecture Inside Linnai Co., Ltd. (72) Inventor Kazuo Yagi 2-26, Fukuzumi-cho, Nakagawa-ku, Nagoya, Aichi Prefecture In-house Co., Ltd. (72) Koji Yano 2-26, Fukuzumi-cho, Nakagawa-ku, Nagoya, Aichi Prefecture Within the corporation

Claims (7)

[Claims] 1. A stove having an annular Gotoku capable of abutting the entire circumference on the bottom of a pot so that the flame from the burner does not leak to the outside of the Gotoku, and the Gotoku is formed hollow. A window communicating with the hollow space of Gokutoku through the exhaust passage to the exhaust port, and a step portion is provided on the inner peripheral surface of Gokutoku so that the hollow space overhangs toward the center of Gokutoku. A flame leakage prevention type stove characterized in that holes are provided on the inner peripheral surface of Gotoku on the upper side and the lower side with the stepped portion interposed therebetween. 2. A stove having an annular Gotoku that can come into contact with the bottom of the pan over the entire circumference so that flames from the burner do not leak to the outside of the Gotoku, and the Gotoku is formed hollow. The hollow space of Gotoku is connected to the exhaust port through the exhaust passage, and the inner peripheral surface of the Gotoku is formed into a funnel shape that is downwardly sloping down, and a window hole communicating with the hollow space is formed inside the Gotoku. A flame leakage prevention type stove, which is characterized in that it is installed in multiple stages on the circumference. 3. A stove having an annular Gotoku that can come into contact with the bottom of the pot over the entire circumference so that flames from the burner do not leak to the outside of the Gotoku. The hollow space of Gotoku is connected to the exhaust port through the exhaust passage, and the inner peripheral surface of the Gotoku is formed in a funnel shape that is downwardly sloping, and the window hole communicating with the hollow space is formed in the vertical direction. A flame leakage prevention type stove characterized by being formed in a longitudinal slit shape and provided around the inner peripheral surface of Gotoku. 4. The flame according to claim 1 or 2, wherein an annular eave is provided above each of the window holes and has an inner diameter smaller than a peripheral diameter of each window hole. A leak-proof stove. 5. The sum total of the opening areas of the window holes along the circumferential direction is set so as to become wider toward the upper side, according to any one of claims 1 to 4. Flame leakage prevention type stove. 6. An exhaust fan for sucking exhaust gas from the window hole and forcibly exhausting the exhaust gas is provided, the height of the pan bottom is detected, and the combustion amount of the burner and the rotational speed of the exhaust fan are increased or decreased according to the height of the pan bottom. The flame leakage prevention cooker according to any one of claims 1 to 5, further comprising control means for performing at least one of the above. 7. The flame leakage prevention type stove according to claim 1, wherein the burner is an internal flame hole type ring burner in which flame holes are circumferentially provided in an annular shape.