JP2016109315A - Trivet and manufacturing method of trivet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a trivet which can suppress appearance being damaged by discoloration and deformation of a trivet claw even when the trivet claw is heated by a cooking stove burner, and which can prevent deterioration of corrosion resistance of the trivet, and a manufacturing method of the trivet.SOLUTION: A trivet 4 is provided on a top plate of a gas cooking stove, it includes a plurality of trivet claws 42 which are arranged side by side around a cooking stove burner 2 and on which a cooking container is placed, and the trivet claw 42 includes a metal core material and an enamel layer 42b coated on the surface of the core material. In a portion from an end part 44 on the side opposing to the cooking stove burner in the trivet claw 42 to a position 46 with a predetermined distance away, a ceramic layer 42a coated on the surface of the enamel layer 42b is provided. An upper end part of the ceramic layer 42a has irregularity. Also, masking is applied around a spray coating scheduled portion of the ceramic, and by spray coating ceramic at the spray coating scheduled portion, the ceramic layer 42a having the irregularity at the upper end part is formed.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a virtues provided in a gas stove and a method for manufacturing the virtues.

  Conventionally, five virtues provided on a top plate of a gas stove and provided with a plurality of virtue claws on which cooking containers are placed have been widely used. Of these five virtues, the five virtues are known in which the virtuosity claw includes a metal core and a hollow layer coated on the surface of the core (see, for example, Patent Document 1).

JP 2011-179775 A JP 2007-003128 A

  In the five virtues shown in Patent Document 1, when the tip of the five virtue claws facing the conrobana is heated, the enamel layer covering the surface of the tip of the five virtue claws may be discolored to impair the aesthetics of the five virtues. In addition, when the enamel layer is heated to a high temperature, the enamel is softened, and the softened enamel may be deformed (flowed) due to the load of the cooking container. There is a risk of deterioration.

  Therefore, it is conceivable to apply the technique disclosed in Patent Document 2 so that the virtuosity nail is not easily heated to a high temperature. In Patent Document 2, the virtues are placed on the top plate so as to surround the portion exposed on the top plate of the stove burner, and the cooking container is placed on the virtues so as to be supported. In the stove burner, the interval between the flame holes adjacent to the portion corresponding to the five virtue claws is made wider than the standard interval of the other portions. As a result, the distance from the flame of Gotoku claws is lengthened so that a large flame does not hit the Gotoku claws.

  However, in order to be able to place a cooking container having a diameter as small as possible, it is necessary to shorten the distance between the Gotoku nail and the stove burner. In this case, even if the technique shown in Patent Document 2 is applied to the five virtues having the enamel layer shown in Patent Document 1, it is inevitable that the tip of the five virtue claws becomes hot.

  Even if the virtuosity nail is heated by a stove burner and the virtuosity nail becomes hot enough to discolor or deform the enamel layer, It is an object of the present invention to provide a virtues and a manufacturing method of virtues that can prevent damage and prevent deterioration of the corrosion resistance of the virtues.

  In order to solve the above-mentioned problem, the invention according to claim 1 is provided with a plurality of virtues provided on a top plate of a gas stove and arranged in parallel around a stove burner that passes through the top plate, and a cooking container is placed thereon. The virtues are provided with claws, and the virtues are provided with a metal core and a hollow layer coated on the surface of the core, and the end of the virtues on the side facing the combo burner A ceramic layer coated on the surface of the enamel layer in a portion up to a position a predetermined distance away from the end opposite to the end, and the upper end of the ceramic layer has irregularities. And

  The invention according to claim 2 is the invention according to claim 1, wherein the ceramic layer is formed by thermal spraying.

  Further, the invention according to claim 3 includes a plurality of virtuosity claws provided on a top plate of a gas stove, and arranged in parallel around a stove burner through which the top plate is inserted, and on which a cooking container is placed. Is a manufacturing method of Gotoku, in which a hollow layer coated on the surface of a metal core is coated with a ceramic layer, the end of the Gotoku nail facing the conoburner from the end By masking the surface of the enamel layer at least around the portion to be sprayed up to a position separated by a predetermined distance on the side opposite to the end side, and spraying ceramic on the portion to be sprayed, the surface of the enamel layer is coated. It is characterized in that a ceramic layer having concavities and convexities consisting of pores, which is coated on the portion to be sprayed, is formed.

  In the invention according to claim 1, even if the virtuosity nail is heated by the stove burner and the virtuosity nail becomes high enough to discolor or deform the enamel layer, the virtuosity nail discolors or deforms. It is possible to prevent the aesthetics from being damaged and to prevent the deterioration of the corrosion resistance of the five virtues. Moreover, by providing unevenness on the upper end portion of the ceramic layer, it is possible to suppress the position of the cooking container placed on the five virtue nails from being displaced or the cooking container from falling out of the five virtues.

  In the invention according to claim 2, pores are formed in the ceramic layer by the thermal spraying of the ceramic, and the unevenness is satisfactorily formed.

  In the invention which concerns on Claim 3, it can prevent that the unevenness | corrugation which consists of pores is formed in parts other than the part to be sprayed, and it is suppressed that care property is impaired.

It is the perspective view which looked at the upper part from the top plate of the gas stove of 1st embodiment of this invention from diagonally upward. (A) is a principal part longitudinal cross-sectional view of the surface which passes along the burner in 1st embodiment, (b) is the partially expanded view of (a). It is the perspective view which looked at the five virtue in 1st embodiment from diagonally upward. It is a front view of five virtues in a first embodiment. It is the perspective view seen from diagonally upward of the state which combined the virtues and burner ring in 1st embodiment. It is the perspective view seen from diagonally upward of the state which combined the virtues, burner ring, and ring cover in 1st embodiment. It is a front view of five virtues in a second embodiment. It is a front view of five virtues in a third embodiment.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.

  As shown in FIG. 1, the gas stove is a main body (not shown) including a casing that opens upward, which serves as a base on which the stove burner 2, an operation unit (not shown), a control device (not shown), and the like are attached. ), And a top plate 1 attached to the upper end of the main body, and a stove portion 11 provided on the top plate 1. The top plate 1 is mainly composed of a metal plate such as an aluminum alloy or a glass plate. A chemical conversion film may be formed on the surface of the top plate 1, or the chemical conversion film may not be formed.

  In the first embodiment, as shown in FIG. 1, a left stove part 11a provided with a standard burner 2a is provided on the upper surface of the top plate 1 in front of the left side, and a rear stove part 11b provided with a small burner 2b. Is provided at the back of the central portion in the left-right direction, and a right stove portion 11c provided with a high thermal power burner 2c is provided in front of the right side.

  As shown in FIG. 2 (a), the stove burner 2 includes a mixing tube 21 attached to the main body, a burner body 22 formed at the upper portion of the downstream end of the mixing tube 21, and an upper portion of the burner body 22. The burner head 23 is formed and exposed above the top plate 1 through a burner insertion opening 10 (see FIG. 2B) formed in the top plate 1. On the outer peripheral surface of the burner head 23, a plurality of flame holes (not shown) are formed in an annular shape such as a circle in plan view. In the first embodiment, as shown in FIG. 1, three substantially circular burner insertion openings 10 constituting the stove parts 11 a to 11 c are respectively connected to the left side of the top plate 1, the back of the central part in the left-right direction, A standard burner 2a, a small burner 2b, and a high heating power burner 2c are inserted through the burner insertion opening 10 from below and project upward.

  As shown in FIG. 2, a burner ring 3 having a substantially annular shape in plan view is interposed in a gap S between the inner end edge of the burner insertion opening 10 of the top plate 1 and the outer peripheral surface of the burner body 22 of the stove burner 2. The As shown in FIGS. 2 and 5, the burner ring 3 includes a substantially cylindrical tube portion 31, and an outer flange portion 32 that protrudes over the entire outer periphery of the upper end portion of the tube portion 31. Therefore, in the first embodiment, an inner flange portion 33 that protrudes over the entire circumference is provided on the inner circumference side of the upper end portion of the cylindrical portion 31.

  Further, as shown in FIG. 5, a fitting recess 35 into which the fitting protrusion 43 is fitted is provided on the upper surface of the outer flange portion 32 of the burner ring 3 at a portion where the fitting protrusion 43 described later is located. is there.

  In the first embodiment, the burner ring 3 is attached to the top plate 1, and as shown in FIG. 2, the cylindrical portion 31 of the burner ring 3 is inserted through the burner insertion opening 10 from above the top plate 1. Thereby, the burner ring 3 is attached to the top plate 1 in a predetermined position and a predetermined direction. A concave groove 34a having a ring shape in plan view is formed on the lower surface of the outer flange portion 32 of the burner ring 3, and a sealing member 34b is loaded in the concave groove 34a. When the burner ring 3 is attached to the top plate 1, the outer flange portion 32 comes into contact with the upper surface of the peripheral edge of the burner insertion opening 10 of the top plate 1. At this time, the seal member 34 b is pressed against the upper surface of the top plate 1. The seal is made.

  And on the upper surface of the top plate 1, a virtues 4 in which the respective burners 2 are arranged in the center are provided, and the cooking vessels such as a pot placed on the virtues 4 with the burners 2 and 4 (see FIG. A stove section 11 for heating (not shown) is configured.

  As shown in FIG. 2, the virtues 4 are provided on the top board 1, and are provided with a plurality of virtuosity claws 42 that are arranged in parallel around the stove burner 2 that passes through the top board 1 and on which the cooking container is placed. It is. In 1st embodiment, as shown in FIG.3 and FIG.4, the substantially cyclic | annular virtuosity frame 41 and the some virtuosity claw 42 are assembled | assembled integrally, and it forms. The virtuosity frame 41 is formed by bending a metal round bar having a substantially circular cross section in a ring shape in plan view, and there are a plurality of virtues claw 42 in the circumferential direction of the virtuosity frame 41 (in the first embodiment, 6) are formed at substantially equal intervals. The virtue frame 41 may not have an annular shape in plan view, and a part of the circumferential direction may be interrupted, and the shape in plan view is not particularly limited, such as a substantially circular shape or a substantially square shape. The virtuosity claw 42 will be described in detail later.

  The virtues 4 need to be attached to the burner ring 3 in a predetermined position and a predetermined direction, and positioning means for that purpose is provided. In the first embodiment, the plan view shape of the virtually frame 41 is a non-circular shape, and a virtuoso frame fitting portion capable of fitting the virtuoso frame 41 to the outer collar portion 32 of the burner ring 3 is provided, and the positioning means Is formed.

  As shown in FIG. 3, in the first embodiment, the virtually frame 41 is a circle formed in a plan view shape with a circular part of the annular circumferential direction and an arc extending the remaining part. In the example shown in the figure, the two arcuate portions 41a on the same circle having a central angle of about 150 degrees are opposed to each other, and the distance is slightly separated. The end portions on the same side are connected by a straight line portion 41b so as to be point-symmetric. The central angle of the arcuate part 41a may not be 150 degrees.

  In the first embodiment, as shown in FIG. 5, the burner ring 3 forms an arcuate portion and a straight portion corresponding to the arcuate portion 41 a and the straight portion 41 b of the virtually frame 41, and the outer shape of the outer flange portion 32. Is formed in substantially the same shape as the plan view shape of the five virtue frame 41, and this outer peripheral edge functions as a five virtue frame fitting portion.

  As shown in FIG. 5, the inner peripheral edge of the five virtue frame 41 is fitted into the outer peripheral edge of the outer flange portion 32 of the burner ring 3. Since the outer shape of the outer frame portion 32 of the virtuosity frame 41 and the burner ring 3 is non-circular, the virtues 4 are positioned with respect to the burner ring 3 when the virtues 4 and the burner ring 3 are fitted. It cannot be rotated relative to the circumferential direction. Thereby, the attachment position and direction with respect to the burner ring 3 of the 5 virtue frame 41 can be made into a predetermined position and a predetermined direction.

  In the first embodiment, as shown in FIGS. 2 and 6, a ring cover 5 that covers the upper surface of the burner ring 3 is provided. As a result, even if the broth spills from the pan during cooking, the dirt does not adhere to the burner ring 3 but adheres to the ring cover 5, so that only the ring cover 5 needs to be washed and the careability is improved. Is. In the first embodiment, the ring cover 5 is disposed between the outer periphery of the stove burner 2 (specifically, the outer periphery of the burner head 23) and the inner periphery of the five virtue frame 41. It becomes easier and easier to use. A notch 51 for releasing the fitting protrusion 43 is formed in a portion corresponding to the fitting protrusion 43.

  Hereinafter, the five virtue claws 42 will be described. As shown in FIGS. 3 and 4, the virtuosity claw 42 includes a metal core material (not shown) and a hollow layer 42b coated on the surface of the core material. In the first embodiment, a core material (fabric) is constituted by a flat plate made of metal such as a steel plate having a predetermined thickness formed in a substantially U-shape, and a hollow layer 42b is formed on the entire surface of the core material, so 42 is formed. Then, the tip of the lower piece of the five virtue claws 42 having a substantially U shape is fixed to the five virtue frame 41 by welding, and the five virtues 4 are integrally formed. Each virtuosity claw 42 is fixed so that the longitudinal direction in plan view faces the inner and outer diameter directions of the virtuosity frame 41. Furthermore, in 1st embodiment, it protrudes inward beyond the 5 virtue frame 41 from the upper side of the part welded to the 5 virtue frame 41 of the inner side (center side of the 5 virtue frame 41) to some 5 virtue claws 42. A fitting protrusion 43 that protrudes downward is formed.

  In the present invention, as shown in FIG. 4, the position 46 is spaced a predetermined distance from the end portion 44 on the side facing the stove burner 2 in the virgin claw 42 toward the end portion 45 side opposite to the end portion 44. The ceramic layer 42a coated on the surface of the enamel layer 42b is provided in the portion up to this point. In the first embodiment, the ceramic layer 42 a is formed on the entire surface of the portion from the end 44 to the position 46 in the virtuosity claw 42. The portion where the ceramic layer 42a is formed has a three-layer structure including a core material, an enamel layer 42b, and a ceramic layer 42a from the center side. The predetermined distance from the end portion 44 that determines the position 46 is 2 cm, 3 cm, 4 cm, 5 cm, 6 cm, 7 cm, 8 cm, 9 cm, 10 cm, etc. It is set as appropriate according to the frequency. The predetermined distance is not limited to the numerical value.

  There are various methods for coating the enamel layer 42b with the ceramic layer 42a, such as thermal spraying ceramic, fitting a cylindrical ceramic on the enamel layer 42b, or embedding the ceramic when forming the enamel layer 42b. A method is possible and is not particularly limited. In the first embodiment, the ceramic layer 42a is formed by thermal spraying of the ceramic layer onto the enamel layer 42b.

  By forming such a ceramic layer 42a, the flow of the enamel layer 42b is suppressed. That is, the portion of the virtuosity claw 42 on the side facing the stove burner 2 is heated by the flame formed on the outer periphery of the stove burner 2 on which the cooking container is placed, The covered enamel layer 42b becomes easy to flow. In the present invention, by providing the ceramic layer 42a in the portion from the end 44 to the position 46 in the virtuosity claw 42, even if the virtuosity claw 42 is heated by the flame of the stove burner 2, the ceramic layer 42a is heated to the higher temperature side. The temperature gradient of the enamel layer 42b is suppressed from rising. This suppresses the flow of the hollow layer 42b in the portion from the end 44 to the position 46 in the virtuosity claw 42 covered with the ceramic layer 42a. Note that the enamel layer 42b in the outer part farther away from the stove burner 2 than the position 46 in the five virtue claws 42 has a long distance from the flame of the stove burner 2, so that the enamel layer 42b does not become hot enough to flow even if heated by the flame. Therefore, there is almost no fear of flowing.

  In particular, the portion from the end 44 to the position 46 in the virtuosity claw 42 is placed most even when a small cooking container is placed as well as when a large cooking container is placed. This is the part where the cooking container is often placed. For this reason, the enamel layer 42b in the portion from the end 44 to the position 46 in the virtuosity claw 42 is most likely to flow, but the effect of suppressing the flow by the above-described ceramic layer 42a is most highly obtained.

  By suppressing the enamel layer 42b from being heated to a high temperature by the ceramic layer 42a, the discoloration of the virtues 4 is suppressed, and the appearance is not impaired. Further, the flow of the enamel layer 42b is suppressed by the ceramic layer 42a, whereby the deformation of the virtues 4 is suppressed and the appearance is not impaired. Moreover, since a cooking container does not contact the enamel layer 42b directly, it is suppressed that the enamel layer 42b is damaged, and deterioration of the corrosion resistance of Gotoku 4 is prevented.

  And in 1st embodiment, it has an unevenness | corrugation in the upper end part of the ceramic layer 42a. Concavities and convexities are formed in recesses or grooves formed on the surface of the ceramic layer 42a, ribs, dotted projections, those having both the recesses and projections, and in the layers. There are no particular limitations on the pores. In the first embodiment, pores (not shown) are formed in the ceramic layer 42a by thermal spraying of the ceramic on the enamel layer 42b, whereby irregularities are formed.

  By providing such unevenness on the upper end of the ceramic layer 42a, the cooking container placed on the virtuosity claw 42 becomes difficult to slide on the virtuosity claw 42, and the cooking container placed on the virtuosity claw 42 It is suppressed that a position shifts or a cooking container falls out of Gotoku 4.

  In addition, since irregularities are formed if pores are formed in the ceramic layer 42a, the irregularities can be easily formed, and the manufacturing cost can be lower than the irregularities formed by grooves or the like.

  Next, formation of the ceramic layer 42a by thermal spraying will be described.

  Masking is applied to at least the peripheral portion of the portion to be sprayed from the end 44 to the position 46 in the virtuosity claw 42. Note that masking may be performed on the entire surface other than the portion to be sprayed. Then, the ceramic is sprayed on the portion to be sprayed. Various existing thermal spraying methods can be used as appropriate for thermal spraying, and are not particularly limited. In the first embodiment, a ceramic layer 42a having irregularities consisting of pores is formed by flame spraying, high-speed flame spraying, plasma spraying, cold spraying, explosive spraying, etc. using enamel layer 42b as a base material and powder ceramic as a spraying material. Is forming.

  In this way, by performing thermal spraying after masking, it is possible to prevent the formation of the ceramic layer 42a having irregularities including pores in portions other than the portion to be sprayed. Thereby, it is suppressed that the unevenness | corrugation which consists of a pore is formed in parts other than the part to be sprayed, and care property is impaired.

  Next, a second embodiment will be described with reference to FIG. In addition, since 2nd embodiment is the same as 1st embodiment for the most part, the same code | symbol is attached | subjected about the same part, description is abbreviate | omitted, and a different part is mainly demonstrated.

  In the first embodiment, the enamel layer 42b is coated with the ceramic layer 42a by thermal spraying of ceramic, whereas in the second embodiment, a cylindrical ceramic is fitted on the enamel layer 42b. Thus, the ceramic layer 42a is formed.

  In the first embodiment, the irregularities are formed by the pores in the ceramic layer 42a formed when the ceramic is sprayed on the enamel layer 42b, whereas in the second embodiment, the upper end of the ceramic layer 42a is formed. Concave and convex portions 42c are formed by the concave and convex shapes formed by the grooves formed in the. Thus, the ceramic layer 42a and the unevenness 42c can be formed by a method other than thermal spraying.

  Next, a third embodiment will be described with reference to FIG. Since the third embodiment is mostly the same as the second embodiment, the same parts are denoted by the same reference numerals, description thereof is omitted, and different parts are mainly described.

  In the second embodiment, the ceramic layer 42a is formed on the entire surface of the portion from the end 44 to the position 46 of the virtuosity claw 42 by fitting the cylindrical ceramic on the enamel layer 42b. On the other hand, in the third embodiment, the ceramic layer 42 a is formed only on the upper end portion of the portion from the end portion 44 to the position 46 of the virtuosity claw 42.

  Thereby, the ceramic layer 42a is formed only at the upper end portion of the portion from the end portion 44 to the position 46 of the virtuosity claw 42 on which the cooking container is placed, and it is further suppressed that the careability is impaired. .

DESCRIPTION OF SYMBOLS 1 Top plate 10 Burner insertion opening 11 Stove part 2 Comb burner 3 Burner ring 31 Tube part 32 Outer part 35 Fitting recessed part 4 Gotoku 41 Gotoku frame 42 Gotoku nail 42a Ceramic layer 42b Enamel layer 42c Unevenness 43 Fitting protrusion 44 End Part 45 End part 46 Position separated by predetermined distance 5 Ring cover

Claims (3)

On the top of the gas stove,
A plurality of five virtue claws on which a cooking container is placed side by side around a stove that is inserted through the top plate,
The virtuosity claw is a virtues comprising a metal core and an enamel layer coated on the surface of the core,
A ceramic layer coated on the surface of the enamel layer is provided at a portion from the end of the five virtue claws facing the cono burner to a position spaced a predetermined distance from the end opposite to the end. ,
The five virtues characterized by having irregularities at the upper end of the ceramic layer.   The virtues according to claim 1, wherein the ceramic layer is formed by thermal spraying. On the top of the gas stove,
A plurality of five virtue claws on which a cooking container is placed side by side around a stove that is inserted through the top plate,
The virtuosity claw is a virtuosity manufacturing method in which a ceramic layer is coated on a hollow layer coated on the surface of a metal core,
Masking is applied to the surface of the enamel layer at least around the portion to be sprayed from the end of the virtuosity nail facing the cono burner to a position spaced a predetermined distance from the end opposite to the end. ,
A method for producing five virtues, characterized in that a ceramic layer having pores formed on the surface of the enamel layer is formed by spraying ceramic on the portion to be sprayed, which is covered with the portion to be sprayed on the surface of the enamel layer.

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