JP4669997B2 - Five virtues and gas stove with the five virtues - Google Patents

Description

  The present invention relates to five virtues for supporting a cooking container on a stove burner and a gas stove using the five virtues.

In general, as shown in FIG. 8, a gas stove for cooking by heating includes a burner 140 that burns fuel gas, and a five virtue 200 that supports a cooking container on the burner 140. The virtues 200 are integrally composed of a ring-plate-shaped virtuosity ring 210 provided around the burner 140 and an L-shaped virtuosity claw 220 that is arranged on the virtuosity ring 210 at predetermined intervals and supports the cooking container. .
In such gas stoves, many proposals have been made regarding techniques for improving thermal efficiency. As an example, there is one having a characteristic in the composition of five virtues.
For example, in what is shown in Patent Document 1, a virtuoso has been proposed in which a spiral partition wall is formed on the upper surface of the virtually ring, and a protrusion protruding upward is provided at an intermediate position of the partition wall to serve as a pan mounting portion. .
Moreover, in what is shown in Patent Document 2, the flame ejection direction of the external flame type burner is tilted by a predetermined angle in the circumferential direction of the burner with respect to the straight line connecting the center of the burner and the flame mouth, and the formation direction of the five virtue claws is similarly tilted. Thus, there has been proposed a gas stove that attempts to increase the contact distance between the flame and the cooking vessel.
2-140210 JP 2003-166718 A

However, in Gotoku of Patent Document 1, in order to place the cooking container on the protrusion provided on the partition wall, the combustion gas passage between the bottom of the cooking container and the Gotoku ring is not divided and communicates with the upper part. Thus, at the bottom of the cooking container, the burner combustion gas (including the flame) flows in the radial direction without turning.
Moreover, in the stove of patent document 2, since the direction in which the combustion gas is ejected is inclined and the direction in which the virtues are formed is also inclined in the same direction, the combustion gas flows obliquely with respect to the radial direction. This contact cannot be obtained sufficiently.
That is, in any of these stoves, the combustion gas flows outwardly below the cooking vessel in a laminar flow state.
In this case, a heat transfer boundary film is formed by a thin air layer on the bottom surface of the cooking container, and this heat transfer boundary film functions as a heat insulating layer, preventing heat transfer of the combustion gas to the cooking container.
As a result, high thermal efficiency could not be obtained.

  Then, this invention aims at solving the said subject and improving the heat transfer efficiency between combustion gas and a cooking vessel, and obtaining high thermal efficiency.

The five virtues according to claim 1 of the present invention for solving the above-mentioned problems are:
In the five virtues where a plurality of five virtue claws supporting the bottom surface of the cooking container are erected at a predetermined interval on the upper surface of the five virtue rings provided around the stove burner,
Each of the five virtue claws has a plate-like vertical wall extending outward by inclining at a predetermined angle in the circumferential direction of the burner with respect to a virtual straight line radially directed from the center of the stove burner ,
The plate-like vertical wall has an inner peripheral tip and an outer peripheral tip that are displaced from each other in the forward and reverse directions with respect to the burner circumferential direction with respect to the imaginary straight line, and an inner peripheral end that is along the tangential direction of the burner. Is arranged from the inner tip to the outer tip, and is erected from the upper surface of the Gotoku ring,
Further, when the cooking container is placed, the upper end of each of the five virtue claws comes into linear contact with the bottom surface of the cooking container, and the combustion gas passage of the stove burner is connected to the upper surface of the virtue ring and the upper part of the five virtues. It is divided into a plurality of combustion gas passages that are surrounded by the nail and the bottom surface of the cooking container, and discharges the combustion gas to the outside while colliding with the wall of the five virtue claw,
The gist of the invention is that an inclined portion whose upper end surface becomes higher outward from the burner side inner end is provided on the burner side of the virtuosity claw.

  The five virtues according to claim 2 of the present invention for solving the above-mentioned problems are the five virtues according to claim 1, wherein the five virgin claws extend outward in an arc shape and when the cooking container is placed, the upper end thereof is the bottom surface of the cooking container. And contact on the arc line.

  The grit according to claim 3 of the present invention for solving the above problems is characterized in that, in the grit according to claim 1 or 2, a heat insulating means for suppressing heat radiation from the lower surface of the virtually ring is provided.

  The five virtues according to claim 4 of the present invention for solving the above-mentioned problems are the five virtues according to any one of claims 1 to 3, wherein the center of the combo burner and the inner front end of the cooking container placing portion in the five virtues claw are provided. The gist is that the five virtue claws are arranged so that the connecting straight line intersects with the adjoining five virtue claws within 70 mm from the center of the above-described conoburner.

The gas stove according to claim 5 of the present invention for solving the above-mentioned problems is
The gist is provided with the five virtues according to any one of claims 1 to 4.

According to the virtues according to claim 1 of the present invention having the above-described configuration, the combustion gas (including the flame) of the stove burner is a plurality of combustion gases surrounded and partitioned by the upper surface of the virtually ring, the virgin claw and the bottom surface of the cooking vessel. When it flows into the passage, it collides with the side surface of the five virtue claws extending at a predetermined angle. And the combustion gas which collided with Gotoku claw changes direction from a horizontal direction to an upper direction, and collides with a cooking vessel bottom face. As a result, the combustion gas flows in a turbulent state in the combustion gas passage, and no heat transfer boundary film (thin air insulation layer) is formed on the bottom surface of the cooking vessel, and the heat of the combustion gas is good on the bottom surface of the cooking vessel. It is transmitted to.
Further, the contact distance between the combustion gas and the bottom surface of the cooking container can be increased.
Further, since the combustion gas collides with the virgin claws and is sent to the outside while changing the flow upward, when the combustion gas reaches the outer peripheral portion rather than the cooking vessel, it is sent upward and flows along the side surface of the cooking vessel. For this reason, combustion gas cannot escape easily to the outer side (lateral direction) of a cooking container, and can use the heat of combustion gas effectively.
As a result, extremely high thermal efficiency is obtained.

Moreover, according to the virtues described in claim 2 of the present invention, the virtuosity claw extends outward in an arc shape, and the upper end thereof abuts on the cooking vessel bottom surface on the arc line, so that the combustion gas collides with the virtuosity claw side wall. While being smoothly sent to the outside, the entire Gotoku ring surface flows in a spiral shape, so even if the contact distance with the bottom surface of the cooking container is long, the exhaust resistance is small and the heat distribution is also less biased.
As a result, the thermal efficiency is further improved.

According to the virtues described in claim 3 of the present invention, the combustion gas collides with the virtues, so that not only the virtues but also the virtues are heated, but the heat insulating means suppresses heat radiation from the lower surface of the virtues. Therefore, it is possible to prevent the temperature of the burner combustion gas from decreasing.
Therefore, the combustion gas heat can be effectively used for heating the cooking container, and the thermal efficiency can be further improved.
Moreover, deterioration of the cooking environment due to heat radiation from the five virtues can be suppressed.

Further, according to the virtues described in claim 4 of the present invention, in the case of a general cooking container, the combustion gas always collides with the virtues claws and collides with the bottom of the cooking container.
In other words, depending on the arrangement interval and inclination angle of the five virtue claws, there will be a region where the combustion gas is discharged as it is without colliding with the virtue claws. Since the virtuosity nail is arranged so that the straight line connecting the inner tip of the cooking container placement portion of the virtuosity nail intersects the adjacent virtuosity nail within 70 mm from the center of the burner, the diameter is 160 mm (radius 80 mm Even in a general small pan having a radius of curvature R = 10 mm of the outer peripheral portion, the combustion gas can collide with the bottom surface of the cooking vessel over the entire circumference.
Therefore, if it is a general cooking container, the effect of the said Claims 1-3 will be acquired reliably.

  Moreover, according to the gas stove according to claim 5 of the present application, the same effect as the five virtues of the present invention can be obtained.

In order to further clarify the configuration and operation of the present invention described above, a preferred embodiment of a gas stove using the five virtues of the present invention will be described below.
In addition, about the point which overlaps with a prior art example, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  As shown in FIGS. 1 and 2, the table stove as a gas stove is provided with an opening in the top plate 12, and a cylindrical burner 14 is disposed at the center of the opening. On the upper periphery of the burner 14, a virtues 20 for placing the cooking container P is provided.

The burner 14 is an all-primary air type burner that sucks most of air necessary for combustion as primary air, and includes a burner plate 17 as a combustion surface and a burner body 15.
The burner plate 17 is a flat plate made of porous ceramics and has a large number of through holes. The burner plate 17 is disposed so that its combustion surface is disposed in the horizontal direction and the flame is burned upward.
An air supply fan 31 for supplying combustion air is connected to the burner body 15 at an upstream end, and a gas nozzle 32 for ejecting fuel gas is provided in the middle of the air supply passage. Further, a mixing tube 15a for mixing the fuel gas and the combustion air is formed downstream of the gas nozzle 32.

Next, the configuration of Gotoku 20 will be described with reference to FIGS.
The virtues 20 are provided around the burner 14 to support the cooking container P and cover the upper portion of the opening of the top plate 12 and the soup pan 18 and erected the virtues claw 22. The virtuosity ring 21 as a base, an annular rectifying plate 24 projecting upward on the upper surface of the outer periphery of the virtuosity ring 21, and a protrusion 23 for fixing the virtues 20 main body on the top plate 12 are integrally configured. Is done.

The virtuosity ring 21 is in the form of a ring plate, and a ring-shaped combustion gas passage is formed between the bottom surface of the cooking container P and the bottom surface of the virtuosity claw 22 to guide it outward.
The Gotoku ring 21 has a double structure formed by a front plate 21 a facing the cooking container P and a back plate 21 b facing the soup pan 18 and the top plate 12.
The front plate 21a and the back plate 21b have horizontal surface portions 21g and 21h on the outer peripheral side, respectively, and inclined flange portions 21c and 21d that are inclined downward toward the ring center on the inner peripheral side. The tips of the inclined flange portions 21 c and 21 d are provided close to the outer peripheral side surface of the burner 14, and almost no gap is formed between the five virtue ring 21 and the burner 14.
Therefore, a combustion gas passage (including the burner combustion region) is formed by surrounding the upper and lower surfaces with almost no gap between the upper surface of the virtually ring 21, the burner 14, and the bottom surface of the cooking container P.

Further, in the ring-shaped combustion gas passage surrounded by the upper surface and the bottom surface of the Gotoku ring 21 around the burner 14 and the bottom surface of the cooking vessel P, the cross-sectional area A of the passage becomes narrower as the distance from the burner 14 increases. The angles of the inclined flange portions 21c and d are set.
That is, the passage cross-sectional area A is set to r as the distance from the burner center (center of the five virtue rings), and h as the height from the gort ring 21 to the bottom of the cooking container P.
A = 2πrh
H is set, that is, the angle of the inclined flange portions 21c and 21d is set so that the passage cross-sectional area A becomes smaller as r is larger.

  Further, the front plate 21a and the back plate 21b of the Gotoku ring 21 sandwich the ceramic 21e as a heat insulating material in the entire outer peripheral end portion and the inner peripheral end portion, respectively, and the outer peripheral end portion and the inner peripheral portion. It is fixed by caulking at each of four ends.

Each of the five virtue claws 22 has an arcuate plate-like vertical wall extending outwardly at a predetermined angle in the burner circumferential direction with respect to a straight line radially extending from the center of the burner 14 (center of the five virtue ring 21). From the upper surface of the Gotoku ring 21 to the outer front end.
Therefore, by arranging the five virtue claws 22 on the upper surface of the five virtue ring 21 at a predetermined interval (a predetermined angle pitch with respect to the ring center), the five virtue claws 22 are formed in a spiral shape on the upper surface of the five virtue ring 21 as viewed from above.
The five virtue claws 22 include an inclined portion 22d on the inner peripheral side and a cooking container mounting portion 22c on the outer peripheral side.
The inclined portion 22d is provided with an inclination so that the upper end surface becomes higher outward from the inner end.
The cooking container placing portion 22c has a top surface that is substantially horizontal and is a portion on which the cooking container P is placed.
Since the five virtue claws 22 have the same shape, the upper ends of the respective cooking container placement portions 22c are located on the same horizontal plane, and are directly applied to the bottom surface of the cooking container P on a curved line extending in an arc shape. The left and right spaces are separated by touching.
Thus, the ring-shaped combustion gas passage is divided into a plurality of combustion gas passages divided in a spiral shape by the five virtue claws 22.

During cooking, the flame formed upward by the combustion of the burner 14 spreads in the lateral direction (radial direction from the center of the burner) when it hits the center of the bottom surface of the cooking container P. Therefore, the combustion gas (including the flame) flows into the plurality of combustion gas passages partitioned in a spiral shape, and passes while colliding with the five virtue claws 22. And when it collides with this virgin claw 22, combustion gas changes a flow from a horizontal direction to an upper direction, and is sent outside, repeating the collision to the cooking vessel P bottom face.
For this reason, in the divided combustion gas passage, the combustion gas turbulently prevents the heat transfer boundary film from being formed on the bottom surface of the cooking vessel P, thereby improving the heat transfer efficiency between the bottom surface of the cooking vessel P and the combustion gas. Can do.

  In addition, when the size of the cooking container P is smaller than the diameter of the virtually ring 21, when the combustion gas reaches the outer peripheral portion of the cooking container P, it collides with the spiral virtuosity claw 22 and continues upward. Since it is sent and flows along the side surface of the cooking container P, heat exchange with the combustion gas is favorably performed on the side surface of the cooking container P in addition to the bottom surface of the cooking container P.

  Furthermore, since the virtuosity claw 22 extends outward in an arc shape and the entire surface of the virtuosity ring 21 is formed in a spiral shape, the combustion gas is smoothly sent to the outside while colliding with the side walls of the virtuosity claw 22, and the cooking container Even if the contact distance with the P bottom surface is long, the exhaust resistance is small, and the heat distribution is less biased.

  In addition, since the combustion gas of the burner 14 is passed through the combustion gas passage surrounded by the burner 14, the Gotoku ring 21 and the bottom surface of the cooking container P with almost no gap, and the combustion gas is discharged from the outer periphery thereof, the combustion gas The outside air does not flow into the passage, and the cooling of the combustion heat by the outside air can be suppressed.

Further, since the inclined flange portion 21c is provided in the gorgeous ring 21 so that the passage area of the combustion gas passage becomes narrower as the distance from the burner 14 increases, the distance from the burner 14 is closer, that is, the location closer to the combustion space. In the above, the combustibility of the burner 14 is not impaired, and the passage area of the combustion gas passage can be narrowed at a location far from the burner 14 to increase the flow velocity of the combustion gas.
Therefore, the heat transfer efficiency between the cooking vessel P and the combustion gas can be improved while keeping the burnability of the burner 14 good.
Furthermore, the volumetric flow rate of the combustion gas decreases with a decrease in the temperature of the combustion gas as the distance from the burner 14 increases. Therefore, when the area of the combustion gas passage does not change even when the distance from the burner 14 is increased, the combustion gas is decelerated and diffused, and the thermal efficiency is lowered. However, in this embodiment, the burner 14 Since the passage area of the combustion gas passage is narrowed as the distance from is increased, the flow velocity of the combustion gas is not reduced due to the reduction in the volume flow rate of the combustion gas.
Therefore, the high-temperature combustion heat does not diffuse in the combustion gas passage, and the combustion heat can be efficiently transmitted to the cooking vessel P.

In addition, since the forced combustion method is adopted, good combustion performance can be maintained even if the exhaust gas resistance is increased by increasing the sealing degree of the combustion gas passage.
Further, the flow of the combustion gas surely changes upward over the entire circumference by the rectifying plate 24 provided at the outer peripheral end of the gorgeous ring 21.
Therefore, when the diameter of the cooking vessel P is larger than that of the rectifying plate 24, the combustion gas collides with the bottom surface of the cooking vessel P and then between the upper end surface of the rectifying plate 24 and the bottom surface of the cooking vessel P as shown in FIG. It is discharged outside through the gap. Therefore, the heat transfer efficiency between the combustion gas and the bottom surface of the cooking vessel P can be improved.
When the diameter of the cooking container P is smaller than that of the rectifying plate 24, the combustion gas is sent upward while passing through the combustion gas passage defined by the spiral virtuosity claw 22, but a part of the combustion gas is sent. The current may reach the current plate 24 without being sent upward. Even in such a case, the combustion gas is guided upward by the current plate 24.
Therefore, the heat transfer efficiency between the combustion gas and the side surface of the cooking container P can be improved.
As a result, the thermal efficiency is greatly improved.

  Furthermore, since the inclined portion 22d is formed by obliquely cutting the inner upper portion of the virtuosity claw 22, the virtuosity claw 22 is not directly blown by the flame. For this reason, the flame is not cooled by the five virtue claws 22, the combustibility is deteriorated, and carbon monoxide gas is not generated. Moreover, the durability of Gotoku 20 is not lost.

Further, in the Gotoku ring 21 that faces the cooking vessel P and forms a combustion gas passage, a double structure is constituted by a front plate 21a that is in direct contact with the high-temperature combustion gas and a back plate 21b that is not in direct contact with the burner combustion gas. For this reason, the gap formed between the front plate and the back plate functions as a heat insulating layer, and the heat of the burner 14 combustion gas transferred to the front plate 21a does not radiate from the back surface.
Further, the ceramic 21e is sandwiched between the front plate 21a and the back plate 21b over the entire inner peripheral end and outer peripheral end of the gort ring 21, and the connecting portion (caulking and fixing) between the front plate 21a and the back plate 21b. Part) has four locations on the inner peripheral end and the outer peripheral end, respectively, so that the combustion gas heat transferred to the front plate 21a is prevented from transferring from the inner peripheral and outer peripheral ends to the back plate 21b. it can. Therefore, the heat transfer to the back plate 21b of the burner combustion gas heat transferred to the front plate 21a can be reliably suppressed.
With such a structure, the temperature reduction of the burner combustion gas can be prevented, and the combustion gas heat of the burner can be effectively used for heating the cooking vessel P.
Thereby, while being able to improve thermal efficiency, the deterioration of the cooking environment by the heat radiation from Gotoku 20 can be suppressed.
In the double structure of the five virtue ring 21, the effect is further enhanced if the space between the front plate and the back plate is evacuated to have a heat insulation structure like a so-called thermos.

Next, a table stove according to the second embodiment will be described with reference to FIG.
The table stove 1 according to the second embodiment has a feature regarding the arrangement of the five virtue claws on which the cooking container is placed, and the other configurations are all the same as those of the first embodiment.
The virtues 20 of the second embodiment are such that the combustion gas always collides with the virtues claw 22 and collides with the bottom surface of the cooking container P if it is a general cooking container.
That is, when a small pan is used, an area where combustion gas is discharged to the outside without colliding with the five virtue claws 22 may be formed depending on the arrangement interval of the five virtue claws 2 and the inclination angle thereof. In the embodiment, the straight line connecting the center of the stove burner 14 (center of the virtuosity ring 21) and the inner tip A of the cooking container placement portion 22c of the virtuosity claw 22 is horizontal from the burner center O to the adjacent virtuosity claw 22. Gotoku claws are arranged so as to intersect (intersection X) within 70 mm in the direction.

Generally, a cooking pan having a diameter of 160 mm or more is used. And if the curvature radius of the outer peripheral part of a pan shall be 10 mm, the range within the radius of 70 mm from the burner center will necessarily become a pan bottom mounting surface.
Therefore, in order to prevent a region in which the combustion gas is discharged as it is without colliding with the virgin claws 22, the radius of 70 mm is obtained at any angle in the radial direction from the burner center O on the horizontal plane. It suffices if the cooking container mounting portion 22c exists in the region.
Therefore, in this embodiment, the straight line connecting the burner center O and the inner tip A of the cooking container mounting portion 22c of the virtuosity claw 22 is within 70 mm horizontally from the burner center O to the adjacent virtuosity claw 22. Gotoku claws are arranged so that they intersect.
For this reason, even if it is a case where a small pan is used, the collision of combustion gas to the five virtue claws 22 can be produced over the entire circumference, and the effects shown in the previous embodiments can be obtained with certainty.

As mentioned above, although the Example of this invention was described, this invention is not limited to such embodiment at all, Of course, it can implement with a various form in the range which does not deviate from the summary of this invention.
For example, in the present embodiment, the virtuosity claw is formed of an arc-shaped plate, but the linear plate-like virtuosity claw may be provided by being inclined at a predetermined angle in the circumferential direction with respect to a straight line directed radially from the center of the stove burner.
In addition, the Gotoku ring is not limited to a double structure, but can be applied to a single plate, or may be configured without a current plate.
The burners in the embodiments are not limited to all primary burners that supply most of the combustion air as primary air, but can also be applied to table stoves equipped with bunsen burners, semi-bunsen burners, and red fire burners.

  The present invention can be applied to various gas stoves such as a table gas stove and a built-in gas stove incorporated in a kitchen unit.

It is a perspective view of the table stove of Example 1. FIG. It is explanatory drawing showing the function of the table stove of Example 1. FIG. It is a perspective view of five virtues of Example 1. FIG. 3 is a top view of the five virtue of Example 1. FIG. It is a longitudinal cross-sectional view of the five virtues of Example 1. It is explanatory drawing showing the function of the table stove of Example 1. FIG. 6 is a top view of five virtues of Example 2. FIG. It is a perspective view of the conventional table stove.

Explanation of symbols

1 Table Stove P Cooking Container 12 Top Plate 14 Burner 20 Gotoku 21 Gotoku Ring 22 Gotoku Claw 22c Cooking Container Placement

Claims (5)

In the five virtues where a plurality of five virtue claws supporting the bottom surface of the cooking container are erected at a predetermined interval on the upper surface of the five virtue rings provided around the stove burner,
Each of the five virtue claws has a plate-like vertical wall extending outward by inclining at a predetermined angle in the circumferential direction of the burner with respect to a virtual straight line radially directed from the center of the stove burner ,
The plate-like vertical wall has an inner peripheral tip and an outer peripheral tip that are displaced from the virtual straight line in forward and reverse directions with respect to the burner circumferential direction, and an inner peripheral end along the tangential direction of the burner. Is arranged from the inner tip to the outer tip, and is erected from the upper surface of the Gotoku ring,
Further, when the cooking container is placed, the upper end of each of the five virtue claws comes into linear contact with the bottom surface of the cooking container, and the combustion gas passage of the stove burner is connected to the upper surface of the virtue ring and the upper part of the five virtues. It is divided into a plurality of combustion gas passages that are defined by the nail and the bottom of the cooking vessel, and discharges the combustion gas to the outside while colliding with the wall of the five virtue claw,
The five virtues characterized in that an inclined portion whose upper end surface becomes higher outward from the burner side inner end is provided on the burner side of the five virgin claws.   The virtues according to claim 1, wherein the virtuosity claw extends outward in an arc shape, and when the cooking container is placed, an upper end of the cooking jar is in contact with the bottom surface of the cooking container on an arc line.   The virtues according to claim 1 or 2, further comprising heat insulating means for suppressing heat radiation from the lower surface of the virtually ring.   The five virtue claws are arranged so that the straight line connecting the center of the conoburner and the inner tip of the cooking container placement portion in the gortoku claws intersects the adjacent virtue claws within 70 mm from the center of the combo burner. The five virtues according to any one of claims 1 to 3, wherein the five virtues are provided.   A gas stove provided with the five virtues according to any one of claims 1 to 4.

Images