JP2009293806A - Heating cooker, and cover member constituting the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heating cooker of novel structure, for enhancing effectively a heating efficiency, and attaining sufficiently a restraint effect of carbon monoxide, by promoting complete combustion of combustion gas. <P>SOLUTION: This heating cooker is formed with an inner space 38 opened to an outer space continuously in a circumferential direction and a vertical direction, between an outer circumferential face of a cooker body 12 and an opposed face of an inner circumferential face of a cover member 16, by arranging outer-insertingly the cover member 16 in the cooker body 12, and by bringing the cooker body 12 into contact with cover member 16 via a plurality of support protrusions 22, 32, 34. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a cooking device such as a pot, a kettle, or a kettle that is heated by fire and a cover member that constitutes the cooking device.

  Conventionally, cooking methods for cooking by cooking a cooking device such as a pot or a kettle are known.In particular, in recent years, from the viewpoint of environmental conservation and energy saving, heating efficiency is improved, combustible gas, oil, There is a strong demand to reduce the consumption of fuel such as charcoal and firewood and the emission of carbon dioxide.

  In order to meet such a requirement, for example, in Patent Document 1 (Japanese Patent Application Laid-Open No. 2004-176939), a cylindrical member (heat escape prevention outer cylinder) is disposed so as to cover the peripheral wall portion of the vessel body from the outside. A structure has been proposed in which the thermal diffusion of the vessel body is suppressed by a cylindrical member.

  However, in the heating cooker described in Patent Document 1, the lower end portion of the tubular member extends radially inward and is disposed so as to surround the gas burner that is a heat source, and the bottom portion of the vessel body is It is placed on the protruding tip of the lower end so as to cover the upper side of the gas burner. Therefore, contact with the external space in the combustion gas discharge part of the gas burner is remarkably restricted by the cylindrical member and the vessel body, and the combustion gas tends to stay at the bottom of the vessel body. As a result, the heat convection from the heat source to the main body becomes inefficient, and it is difficult to sufficiently improve the heating efficiency. In addition, carbon monoxide is caused by the lack of oxygen due to the increase of the combustion gas near the heat source. The concentration could have been high.

JP 2004-176939 A

  Here, the present invention has been made in the background as described above, and the problem to be solved is that the heating efficiency can be effectively improved and the complete combustion of the combustion gas is promoted. Therefore, it is an object of the present invention to provide a cooking device having a novel structure in which the carbon monoxide suppressing effect can be sufficiently achieved.

  Hereinafter, the aspect of this invention made | formed in order to solve such a subject is described. In addition, the component employ | adopted in each aspect as described below is employable by arbitrary combinations as much as possible. Further, aspects or technical features of the present invention are not limited to those described below, but are described in the entire specification and drawings, or can be understood by those skilled in the art from those descriptions. It should be understood that it is recognized based on thought.

  That is, the present invention is characterized by (a) a vessel body having a bottom wall portion and a peripheral wall portion that can be heated by a combustion-type heat source, and (b) one turn than the peripheral wall portion of the vessel body. A cover member having a large cylindrical shape and capable of being combined with the vessel body so as to surround the peripheral wall portion; and (c) projecting from one of the vessel body and the cover member toward the other. The projecting tip portion is brought into contact with the other, thereby forming an internal space that is continuous in the circumferential direction and the vertical direction between the container body and the cover member, and the internal space is defined as the cover member. The heating cooker includes a plurality of contact support protrusions that are divided in the circumferential direction and open to the external space at both ends in the vertical direction.

  In such a heating cooker structured according to the present invention, the combustion gas released from the heat source uses an internal space formed between the vessel member and the cover member based on convection (thermal convection). By flowing upward along the outer peripheral surface of the container body, heat is transferred upward from the bottom side of the container body. In addition, since the internal space continuously expands in the circumferential direction and the vertical direction and opens to the external space, combustion gas is actively prevented from remaining in the gap between the cover member and the container body, and combustion is performed. Gas complete combustion is performed efficiently. Therefore, the effect of improving the heating efficiency of the vessel body and the effect of suppressing the emission of carbon monoxide are sufficiently obtained.

  In the cooking device according to the present invention, the main body has an annular protrusion protruding on the outer peripheral surface at a portion located above the upper opening end surface of the cover member in a combined state with the cover member. A mode in which the abutting support protrusion is provided between the opposing surfaces in the vertical direction between the upper opening end surface of the cover member and the annular protrusion of the vessel main body may be employed. . According to such an aspect, the arrangement space of the contact support protrusion in the internal space between the container main body and the cover member can be omitted, and the internal space can be secured sufficiently large. The carbon monoxide suppression effect can be further improved by the effect of improving the discharge efficiency of oxygen and the rate of oxygen incorporation from the outside into the internal space.

  In the cooking device according to the present invention, the outer peripheral surface of the main body is provided with a tapered surface that gradually increases in diameter toward the upper side, while the contact support protrusion is provided on the inner peripheral surface of the cover member. A mode in which the projecting tip of the contact support protrusion is in contact with the tapered surface of the container body may be employed. According to such an aspect, the contact area of the combustion gas of the container body can be increased while the height dimension of the container body is suppressed, and the heating efficiency of the container body can be further improved. Further, the main body and the cover member can be positioned and arranged concentrically by utilizing the taper action caused by the contact support protrusion of the cover member coming into contact with the taper surface of the main body. As a result, the formation of a narrow space locally in the circumferential direction of the internal space can be suppressed, combustion efficiency can be improved, and the balance of the center of gravity of the cooking device can be stabilized to improve the safety performance of cooking. It can also be increased.

  Further, in the cooking device of the present invention, the cover body protrudes on the outer peripheral surface at a portion located above the upper opening end surface of the cover member in a combined state with the cover member, An annular covering protrusion that covers the upper opening of the container from above is formed, and an instrument handle is provided on the peripheral wall of the container body that is located further above the annular covering protrusion. , May be adopted. According to such an aspect, when the instrument body and the cover member are combined, or when the instrument body is lifted from the cover member, the interference between the instrument handle and the cover member is suppressed, and the instrument body is easily handled. . Further, since the instrument handle is positioned above the upper opening of the cover member with the annular covering projection interposed therebetween, the high-temperature combustion gas released from the vicinity of the upper opening of the cover member is supplied to the instrument handle. Direct contact is suppressed and excessive heating of the handle is suppressed, so that the handleability of the container body at high temperatures can be improved.

  Moreover, in the heating cooker of this invention, the handle part for covers may be provided in the said cover member on the outer peripheral surface. Thereby, it becomes possible to carry the vessel main body via the cover member and the abutting support protrusion, and the handleability of the heating cooker in a state where the vessel main body and the cover member are combined can be improved. In particular, the handle portion is provided on the cover member side having a lower heating temperature than the directly heated vessel body, so that the heated vessel body can be easily handled, and the handle portion By being arranged away from the opening of the vessel main body, the effect of preventing the handle portion from being soiled by the spillage of the vessel main body can be achieved.

  Moreover, in the heating cooker of this invention, the rough surface area | region where the unevenness | corrugation was attached | subjected in the area | region covered with the said cover member may be provided in the outer peripheral surface of the said apparatus main body. Thereby, as a result of increasing the contact area of the combustion gas on the outer peripheral surface of the container body, the heating efficiency of the container body can be further improved by the positive contact of the combustion gas with the container body.

  Further, in the cooking device of the present invention, the inner peripheral surface of the cover member has a larger corresponding shape corresponding to the outer peripheral surface region covered by the cover member in the main body, thereby The internal space may have a substantially constant gap dimension throughout. Thereby, the excessive expansion to the cover member side in internal space is suppressed, and combustion gas can contact the outer peripheral surface of a container main body efficiently.

  In the cooking device of the present invention, it is desirable that both the main body and the cover member are earthenware, and the cover member is a pottery having a porosity equal to or higher than that of the main body. It is more desirable that it be formed. Thereby, utilizing the characteristics of the pottery containing many pores inside, the heat retaining effect and the heat insulating effect of the container body and the cover member are advantageously exhibited, and the heating efficiency of the container body can be further improved.

  Furthermore, in the cooking device of the present invention, it is also possible to provide a lid so as to cover the opening of the vessel body, whereby the inside of the vessel body is efficiently warmed and accommodated in the vessel body. The heating efficiency of the article to be heated can be further improved.

  Moreover, the feature of the present invention resides in the cover member constituting the heating cooker according to any one of the above-described aspects. That is, in such a cover member, the cooking device of the present invention can also be realized by being assembled to a container body such as a pan body having a conventional structure in addition to the container body of the above-described aspect relating to the present invention. Therefore, effective use of the container body having the conventional structure can be achieved.

  Hereinafter, in order to clarify the present invention more specifically, embodiments of the present invention will be described in detail with reference to the drawings. First, FIG.1, FIG.2 and FIG.3 shows the earthenware pot 10 as 1st embodiment which concerns on the heating cooker of this invention. The earthenware pot 10 includes a pot body 12 as a container body, a lid body 14 attached to an opening of the pot body 12, and a pot cover 16 as a cover member. 14. The entire pan cover 16 is formed using pottery.

  In particular, the earthenware pot 10 of the present embodiment is formed by Iga ware, which is a famous pottery from Mie Prefecture nationwide, and the porosity of the material in the earthenware pot 10 is obtained by utilizing the characteristics of Iga ware containing many pores. And the surface of the earthenware pot 10 has a rough shape. In order to manufacture such a clay pot 10 by Iga ware, first, clay subjected to a clay kneading process is separately formed into the shape of the illustrated pot body 12, the lid body 14 and the pot cover 16, and after passing through a drying process, Unglazed at 700 degrees. After that, underlaying and glaze removal are performed, main baking is performed at about 1200 to 1300 degrees, and the pan body 12, the lid body 14, and the pan cover 16 obtained as a finished product are assembled with each other, A clay pot 10 can be realized. In the following description, unless otherwise specified, the vertical direction and the axial direction refer to the vertical direction in FIGS. 1, 2, 4, and 6, and the horizontal direction and the direction perpendicular to the axis are in FIGS. The direction of the paper.

  More specifically, the pan body 12 has a generally circular vessel shape as a whole, and the bottom wall portion 18 at the approximate center in the direction perpendicular to the axis has a substantially disk shape. Further, the inner peripheral surface and the outer peripheral surface of the peripheral wall portion 20 that rises from the bottom wall portion 18 to the opening portion of the pan body 12 are tapered surfaces that gradually spread outward in the axis-perpendicular direction upward. 20 is a substantially cylindrical shape of an enlarged diameter type. Such a tapered surface includes, in addition to the curved shape as shown in the figure, a shape that extends straight and a composite shape that includes a straight portion and a curved portion. Further, a flange-like portion 22 continuously extending in the circumferential direction as an annular protrusion is formed so as to protrude outward in the direction perpendicular to the axis from the opening end portion of the peripheral wall portion 20 of the pan body 12. Furthermore, a plurality of circumferential grooves 24 extending in the circumferential direction are formed in the axial direction in the region from the lower side to the axially intermediate portion on the outer circumferential surface of the circumferential wall portion 20 of the pan body 12. Thereby, the said area | region is made into the rough surface area | region where the stepped unevenness | corrugation was attached | subjected toward the outward from the center of the outer peripheral surface of the pan main body 12. FIG. In addition to the circumferential groove 24, various shapes that can form the rough surface region such as a step extending in the circumferential direction and a raised portion can be adopted as the rough surface region.

  On the other hand, the lid body 14 has a double lid structure including a substantially disc-shaped inner lid 26 and a substantially circular shade-shaped outer lid 28, and the outer peripheral edge of the inner lid 26 is at the opening end of the pan body 12. In addition to being overlapped, the outer peripheral edge portion of the outer lid 28 is fitted into an annular recess formed in the flange-like portion 22 of the pan body 12, thereby supporting the pan body 12 so as to cover the opening of the pan body 12. Has been. Further, through holes 30 are provided through appropriate portions of the inner lid 26 and the outer lid 28.

  Further, as shown in FIGS. 4 and 5, the pan cover 16 has a substantially cylindrical shape whose diameter is increased toward the upper side. Further, at the upper opening end of the pan cover 16, a pair of first protrusions 32 and second protrusions 34 serving as contact support protrusions are projected upward, and the pair of first protrusions 32, 32 is a pan cover. 16 are arranged opposite to each other in one radial direction (up and down in FIG. 5) across the 16 central axes, and in a direction substantially orthogonal to the one radial direction (left and right in FIGS. 4 and 5), a pair of first Two protrusions 34 are arranged opposite to each other. In addition, the projecting tip portions of the first projection 32 and the second projection 34 are positioned at substantially the same height in the axial direction and are substantially flat. The pan cover 16 is integrally formed with a cover handle portion 36 as a handle portion for the cover so as to spread outward from the outer peripheral surface of each second projection 34 in the direction perpendicular to the axis.

  In the present embodiment, the inner peripheral surface of the pan cover 16 including the first and second protrusions 32 and 34 is made slightly larger than the outer peripheral surface of the peripheral wall portion 20 of the pan body 12 and is substantially the same as the outer peripheral surface. Curved with curvature. Thereby, the pan cover 16 has a cylindrical shape larger in diameter than the peripheral wall portion 20 of the pan main body 12, and includes a tapered inner peripheral surface corresponding to the outer peripheral surface of the peripheral wall portion 20 of the pan main body 12. Yes.

  Such a pan cover 16 is extrapolated from the upper opening to the peripheral wall portion 20 of the pan body 12, and the flange-like portion 22 of the pan body 12 has the protruding tip portions of the first and second protrusions 32 and 34 of the pan cover 16. The pan cover 16 is attached to the pan body 12 by being in contact with the pan body 12. In particular, in this embodiment, the height dimension of the pan cover 16 provided with the first and second protrusions 32 and 34 is slightly larger than the height dimension of the peripheral wall portion 20 of the pan body 12. The bottom wall portion 18 of the pan body 12 is positioned substantially horizontally with the lower end portion of the pan cover 16, and the pan body 12 is attached to the pan cover 16 via the flange-shaped portion 22 and the first and second protrusions 32 and 34. It is supported.

  Here, the inner peripheral surface of the pan cover 16 provided with the first and second protrusions 32 and 34 is made one size larger than the outer peripheral surface of the peripheral wall portion 20 of the pan body 12 and corresponds to the outer peripheral surface. Therefore, the inner peripheral surface of the pan cover 16 is the outer peripheral surface of the peripheral wall portion 20 of the pan body 12 in a state where the pan cover 16 is aligned with the pan main body 12 so as to be substantially concentrically arranged. On the other hand, they are opposed to each other at a substantially constant distance outwardly over substantially the whole. As a result, a gap is formed between the outer peripheral surface of the pan body 12 and the inner peripheral surface of the pan cover 16 so as to extend outward while maintaining a substantially constant size. A space 38 is formed.

  That is, the internal space 38 of the present embodiment extends between the outer peripheral surface of the pan body 12 and the inner peripheral surface of the pan cover 16 below the flange-shaped portion 22 of the pan body 12 in the circumferential direction and the entire vertical direction. It is formed and is open to the external space through the space between the lower end portion of the pan cover 38 and the bottom wall portion 18 of the pan body 12. Moreover, although the upper side opening of the pan cover 16 is covered with the flange-shaped part 22 of the pan body 12, between each circumferential direction of the 1st and 2nd protrusions 32 and 34 protrudingly provided by the upper end part of the pan cover 16. Since the gap opens to the external space, the internal space 38 is opened to the external space through the gap.

  In the earthenware pan 10 having such a structure, the pan body 12 is lifted through the first and second protrusions 32 and 34 and the flange-shaped portion 22 by grasping and lifting the cover handle portion 36 of the pan cover 16. It is possible. Moreover, this earthenware pan 10 can be mounted and used for the well-known gas stove 40 as typically shown in FIG. That is, the lower end portion of the pan cover 16 is placed on the multi-legged ring-shaped virtues 44 such as four legs provided around the gas burner 42 as a heat source of the gas stove 40. As a result, the bottom wall portion 18 of the pan body 12 is spaced apart above the gas burner 42, and the pan body 12 is supported by the gas stove 40 via the pan cover 16 in a state where the pan body 12 is floated from the gas stove 40. The lower opening of 38 opens toward the gas burner 42. Moreover, water 46 etc. as a to-be-heated material which should be heated are put into the pan main body 12, and the opening of the pan main body 12 is closed with the cover body 14. FIG.

  In this state, the gas cooker 40 is ignited, and the pan body 12 can be heated by the flame and combustion gas released from the gas burner 42. Here, since the peripheral wall part 20 of the pan body 12 is covered with the pan cover 16, the heat retaining effect and the heat insulating effect of the pan body 12 are improved, and the pan body 12 can be efficiently heated.

  Therefore, an inner space 38 that is continuous in the circumferential direction and the vertical direction is formed in the earthenware pot 10 of the present embodiment between the opposing surfaces of the outer peripheral surface of the peripheral wall portion 20 of the pot body 12 and the inner peripheral surface of the pan cover 16. Therefore, the combustion gas flows upward along the outer peripheral surface of the pan body 12 using the internal space 38 based on the thermal convection, and the first and second protrusions 32 at the upper end of the pan cover 16, 34 is discharged to the external space from the gap between the two. Thereby, the pan body 12 is efficiently warmed upward from the bottom wall portion 18, and it is possible to heat substantially the entire water 46 accommodated in the pan body 12 without heat spots. Moreover, since the heating space for releasing the flame of the gas burner 42 is reliably communicated with the outside through the internal space 38, it is positively prevented that the combustion gas stays in the heating space and the bottom side of the pan body 12. Thus, complete combustion is performed efficiently.

  In particular, in this embodiment, the pan cover 16 is assembled to the pan body 12 so as to cover substantially the entire peripheral wall portion 20 of the pan body 12 and along the outer peripheral surface shape of the peripheral wall portion 20. The assembly is realized by the contact between the flange-like portion 22 of the pan body 12 and the first and second protrusions 32 and 34 projecting from the upper end portion of the pan cover 16, and the outer peripheral surface of the pan body 12. The structure is such that there is no portion where the inner peripheral surface of the pan cover 16 directly abuts. Thereby, it can ensure large, suppressing the expansion to the pan cover 16 side of the internal space 38. FIG.

  Moreover, in addition to the earthenware pot 10 of this embodiment being Iga ware, the whole surface of the earthenware pot 10 including the outer peripheral surface of the pan main body 12 and the inner peripheral surface of the pan cover 16 is made into a rough surface shape. Since the irregularities are formed on the outer peripheral surface side of the pan body 12, the combustion gas flowing in the internal space 38 positively contacts the pan body 12 side. In addition, the circumferential grooves 24 continuously extending in the circumferential direction on the outer peripheral surface of the pan body 12 are formed in a plurality of strips in the longitudinal direction between the bottom wall portion 18 and the open end of the pan body 12, Since it is comprised, the heat by the convection of a combustion gas is uniformly transmitted to the upper direction from the bottom wall part 18 of the pan main body 12 stepwise and in the circumferential direction. Thereby, it becomes possible to exert a sufficient heating effect in a relatively short time while suppressing heat spots on the object to be heated such as water 46 and ingredients contained in the pan body 12.

  Therefore, the pot body 12 is heated efficiently using the heat energy of the combustion gas, and a sufficient heating effect can be obtained while suppressing the fuel consumption of the gas stove 40. Moreover, by the complete combustion, the monoxide is oxidized. The earthenware pot 10 that exhibits the carbon emission suppression effect advantageously and is excellent in environmental conservation can be realized.

  Next, FIGS. 7, 8 and 9 show a clay pot 50 as a second embodiment according to the heating cooker of the present invention. In the following description, members and parts having substantially the same structure as those of the first embodiment are given the same reference numerals as those of the first embodiment, and detailed descriptions thereof are given. Omitted.

  In the pan cover 16 of the present embodiment, as shown in FIGS. 10 and 11, the upper opening end has a substantially flat shape over the entire circumference. Further, on the inner peripheral surface of the pan cover 16, a plurality of (three in the present embodiment) wall support projections 52 as contact support projections protrude toward the outer peripheral surface of the peripheral wall portion 20 of the pan body 12. It is provided at equal intervals in the circumferential direction. Since the tapered outer peripheral surface of the peripheral wall portion 20 of the pot body 12 is in contact with the protruding tip portions of the wall portion supporting projections 52, the opening end portion of the pot body 12 is more than the upper opening portion of the pot cover 16. Are spaced apart upward, and the internal space 38 opens to the external space through the entire circumference of the upper opening end of the pan cover 16.

  In addition, a pair of main body handle portions 54 and 54 serving as instrument handle portions are provided so as to project at the opening end portion of the pan body 12 so as to face each other in one radial direction. Are arranged opposite to each other and spaced above. Further, a notch-like recess 56 is formed at a position corresponding to the main body handle 54 at the upper opening end of the pan cover 16.

  In the earthenware pot 50 having such a structure, the opening of the inner space 38 to the outer space continuously extends in the circumferential direction at the upper opening end of the pot cover 16, so that the combustion gas contacts the outer space. Efficiency can be improved and complete combustion can be achieved more advantageously.

  Further, the recess 56 is formed at a position corresponding to the main body handle portion 54 at the upper opening end of the pan cover 16 so that a large space around the main body handle portion 54 is ensured, and the pan main body 12 and the pan cover are secured. 16 can be easily assembled and separated. Here, when the earthenware pot 50 is heated, as shown in FIG. 12, the combustion gas released from the internal space 38 comes into contact with the main body handle portion 54 or is discharged from the recess 56, thereby The opening ratio of 38 to the outside can be adjusted. Therefore, in the present embodiment, the heating performance tuning means based on the combustion gas discharge rate is configured to include the main body handle 54 and the recess 56, and therefore a heating tuning means such as a protrusion or an opening is provided separately. The complexity of the structure can be avoided.

  Further, in the present embodiment, the pan body 12 is abutted and supported by a plurality of wall portion support protrusions 52 formed at equal intervals in the circumferential direction on the tapered surface of the pan cover 16 corresponding to the tapered shape of the outer peripheral surface thereof. Therefore, the center of gravity of the pan body 12 can be positioned on the center axis of the pan cover 16. Thereby, stabilization of the gravity center balance of the pot main body 12 and by extension, the earthenware pot 50 is implement | achieved, and when the earthenware pot 50 is heated on the virtues 44 of the gas stove 40, the earthenware pot 50 can be supported stably.

  Incidentally, the amount of carbon monoxide generated when heated by the gas stove 40 (3.3 kW) using the earthenware pot 10 of the first embodiment having the structure according to the present invention is calculated according to the JIS standard (JIS 2093). Measurement was based on the CO concentration (%) in the dry combustion gas. In addition, the combustion gas of a present Example is the circumference of the position below 1/3 of the height dimension of the pan cover 16 from the position spaced radially outward from the outer-periphery edge part of the upper opening end part of the pan cover 16. The sample was collected uniformly (average as much as possible). As a result, a numerical value of 0.02%, which is far below the safety standard value of 0.14% for the CO concentration of household gas combustion equipment, was obtained. From this, it is recognized that the earthenware pot having the structure according to the present invention has sufficient practicality in suppressing the carbon monoxide, and sufficient completeness based on the low measured value of the carbon monoxide concentration. I think that it is excellent in heating efficiency by combustion.

  Moreover, about the earthenware pot 10 of 1st embodiment and the earthenware pot 50 of 2nd embodiment made into the structure according to this invention, it heats using the gas stove 40 (3.3 kw), and FIG. 6, FIG. 12 shows. The thermo viewer 58 was inserted into the through hole 30 of the lid body 14 and the temperature of the water 46 was measured every predetermined time. The results are shown as Example 1 and Example 2 in FIG. Further, after the water 46 reached the boiling point and turned into hot water, the heating was stopped, the earthenware pots 10 and 50 were left, and the temperature of the hot water every predetermined time was measured with the thermo viewer 58. The results are shown in FIG. 14 as Example 1 and Example 2. Moreover, as FIG. 15 shows, the result measured on the same conditions as Example 1, 2 using the pan body 12 which has not assembled | attached the pan cover is shown together in FIG. 13, 14 as a comparative example.

  From the test results shown in FIG. 13 and FIG. 14, it is clear that the clay pots 10 and 50 of the present invention reach the boiling point in a short time and are excellent in the heat retaining effect of hot water. It will be appreciated that the efficiency can be sufficiently improved.

  As mentioned above, although one Embodiment of this invention was explained in full detail, these are illustrations to the last, Comprising: This invention is not limited at all by the specific description in these embodiment.

  That is, the earthenware pans 10 and 50 are not limited to the illustrated ones, and for example, the lid body 14 is not an essential component. Further, instead of the pan body 12 of the embodiment, a commercially available conventional pan body is adopted, and the pan cover 16 of the present embodiment is attached to the pan body, and the pan body 16 and the pan cover 16 of the conventional structure are attached. By forming the internal space 38, a clay pot having a structure according to the present invention may be realized.

  Further, as in the above-described embodiment, it is not necessary to specially provide the abutment support protrusions such as the first and second protrusions 32 and 34, the flange-shaped portion 22, and the wall support protrusion 52 on the pan body 12 or the pan cover 16. For example, by placing the handle portion of the pan body having a conventional structure on the flat upper opening end portion of the pan cover, the abutment support protrusion can be configured by the handle portion.

  Further, for example, a plurality of contact support protrusions projecting on the inner peripheral surface of the pan cover, or a plurality of abutting projections extending inward in the direction perpendicular to the axis at the lower opening end of the pan cover and spaced apart in the circumferential direction. You may make it mount the bottom part thru | or peripheral wall part of a pan main body with respect to a contact support protrusion.

  Moreover, you may provide one or two or more notch-shaped recesses as shown by said 2nd embodiment in the lower end part of a pan main body.

  Also, for example, on the outer peripheral surface of the axially middle portion of the peripheral wall portion of the pan body, a flange-like portion as an annular covering protrusion protrudes and protrudes upward at the upper opening end portion of the pan cover Are provided so that the upper opening of the pan cover is covered with the flange-shaped portion, and is superimposed on each contact support protrusion, and further on the peripheral wall portion or the opening end portion of the pan body located above the flange-shaped portion. A dexterous handle may be provided.

  Furthermore, the upper opening end of the pan body in the first embodiment is formed so as to extend upward from the flange-like portion, and the flange-like portion as the annular projection functions as an annular covering projection. It is also possible to employ a combination with a handle portion on the pan cover side by providing a dexterous handle portion in a portion located above the flange-shaped portion of the pan body.

  In addition, the specific structure of the container handle and the cover handle is not limited to the above-described embodiment. For example, the handle shape of a pan projecting outward may be used, and a recess is formed on the outer peripheral surface of the pan body or pan cover. Then, each handle portion may be configured by inserting and holding the fingers.

  In addition, the pan cover has a cylindrical shape that extends straight in the axial direction, the bottom of the pan body extends straight, and the boundary between the bottom and peripheral wall of the pan body is smoothly connected to the outer periphery of the pan body. It is good also as a container shape which becomes deeper gradually toward a center part from a part.

  Moreover, in addition to the gas burner 42 of the gas stove 40 as illustrated, it is also possible to use seven bowls, firewood, etc. as the heat source of the earthenware pots 10, 50. Furthermore, in the said embodiment, when installing the earthenware pans 10 and 50 to the gas stove 40, the pan cover 16 was placed on the virtues 44 and the pan body 12 was lifted from the virtues 44. Can be placed on the gas stove around Gotoku, and the pan body can be placed on Gotoku, or the pan body can be placed on the Gotoku and the pan cover can be lifted from the gas stove around Gotoku. Is possible.

  In addition, in the said embodiment, although the specific example applied to the earthenware pot 10 and 50 which this invention was formed with earthenware, especially Iga ware was shown, this invention is limited to this earthenware pot. Of course, the present invention can be applied to a pan, a pot, a kettle or the like in which a part or all of a pan body, a pan cover, a lid and the like are formed of a metal material.

  In addition, although not listed one by one, the present invention can be carried out in a mode to which various changes, modifications, improvements and the like are added based on the knowledge of those skilled in the art. It goes without saying that all are included in the scope of the present invention without departing from the spirit of the present invention.

It is a longitudinal cross-sectional view of the clay pot as 1st embodiment of this invention, Comprising: II sectional drawing of FIG. The front view of the clay pot of FIG. The top view of the clay pot of FIG. The front view of the pot cover which comprises a part of earthenware pot of FIG. The top view of the pan cover of FIG. It is a longitudinal cross-sectional view for installing the earthenware pot of FIG. 1 in a gas stove, and explaining one use condition, Comprising: The figure equivalent to the VI-VI cross section of FIG. It is a longitudinal cross-sectional view of the earthenware pot as 2nd embodiment of this invention, Comprising: The VII-VII sectional view of FIG. The front view of the clay pot of FIG. The top view of the clay pot of FIG. The front view of the pot cover which comprises a part of earthenware pot of FIG. The top view of the pan cover of FIG. It is a longitudinal cross-sectional view for demonstrating one use condition by installing the earthenware pot of FIG. 7 in a gas stove, Comprising: The figure corresponded in the XII-XII cross section of FIG. The graph which shows the result of the test which confirmed the performance of the clay pot shown by FIG. 1 and FIG. 7 with the result of a comparative example as Example 1 and Example 2. FIG. The graph which shows the result of the test which confirmed the performance of the clay pot shown by FIG. 1 and FIG. 7 together with the result of a comparative example as Example 1 and Example 2. FIG. FIG. 15 is a longitudinal sectional view showing a state in which a pot body used for measurement of a comparative example is installed on a gas stove during a test for confirming the performance of the clay pot shown in FIGS. 13 and 14, and corresponding to FIGS. 6 and 12.

Explanation of symbols

10: Earthen pot, 12: Pan body, 16: Pot cover, 18: Bottom wall part, 22: Flange-like part, 32: First protrusion, 34: Second protrusion, 38: Internal space, 42: Gas burner

Claims (9)

A vessel body having a bottom wall and a peripheral wall that can be heated by a combustion-type heat source;
A cover member that has a cylindrical shape that is slightly larger than the peripheral wall portion of the main body, and can be combined with the main body to surround the peripheral wall portion;
The container body and the cover member are formed so as to project from one side to the other, and the projecting tip is brought into contact with the other, so that the circumferential direction and the vertical direction are between the container body and the cover member. And a plurality of abutment support protrusions divided in the circumferential direction, each of which opens the internal space to the external space at both end portions in the vertical direction of the cover member. A heating cooker characterized by being.   The container body is formed with an annular protrusion projecting on the outer peripheral surface at a portion located above the upper opening end surface of the cover member in a combined state with the cover member. The cooking device according to claim 1, wherein the abutting support protrusion is provided between opposing surfaces in the vertical direction between the opening end face and the annular protrusion of the main body.   The outer peripheral surface of the vessel body is provided with a tapered surface that gradually increases in diameter toward the upper side, while the abutting support protrusion is provided on the inner peripheral surface of the cover member, and the corresponding contact support protrusion protrudes. The cooking device according to claim 1, wherein a tip portion is brought into contact with the tapered surface of the container body.   The container main body has an annular shape that protrudes on the outer peripheral surface at a portion located above the upper opening end surface of the cover member in a combined state with the cover member, and covers the upper opening of the cover member from above. 4. The device according to claim 1, wherein a cover protrusion is formed, and a handle portion for a device is provided on the peripheral wall portion of the device body located further above the annular cover protrusion. 5. Cooking device.   The cooking device according to any one of claims 1 to 4, wherein the cover member is provided with a cover handle on an outer peripheral surface.   The cooking device according to any one of claims 1 to 5, wherein a rough surface region provided with irregularities in a region covered with the cover member is provided on an outer peripheral surface of the vessel body.   The inner peripheral surface of the cover member has a shape corresponding to a size corresponding to the outer peripheral surface area covered by the cover member in the container body, whereby the inner space is substantially constant throughout. The cooking device according to any one of claims 1 to 6, wherein the cooking device has a gap size.   The cooking device according to any one of claims 1 to 7, wherein both the main body and the cover member are earthenware.   The said cover member which comprises the heating cooker as described in any one of Claims 1 thru | or 8.

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