JP3245021U - Assembled portable pizza oven - Google Patents

Abstract

[Problem] To provide an assembly type portable pizza oven that is lightweight, has excellent fire resistance and heat retention, and is easy to assemble and disassemble. [Solution] The assembly type portable pizza oven of the present invention has a combustion chamber and a pizza baking chamber. , and a partition wall plate 3 disposed between these. The combustion chamber has a base 1 having an air intake port 7 connected to the outside and a first side wall 2, and a pizza baking chamber having a dome-shaped top plate 5 and a second side wall 4 is arranged in the upper layer. , the top plate 5 is provided with an exhaust port 6 connected to the outside. Each of the above parts is made of fire-resistant block material and can be divided into parts. In particular, the first side wall 2 and the second side wall 4 are constituted by annular bodies, each of which is constituted by circumferentially divisible segments 2a-2c and 4a-4c. Further, the block material used includes a porous material such as pumice, shirasu material, glass-based material, etc. [Selection diagram] Figure 3

Description

The present invention relates to an assembly type portable pizza oven that is easy to carry.

With the diversification of leisure activities in recent years, opportunities to bring a full-fledged pizza oven and serve pizza to outdoor events, campgrounds, etc. are increasing. For example, the portable pizza ovens described in Patent Document 1 and Patent Document 2 are intended to meet such demand.

However, in order to bake authentic pizza, it is necessary to cook at high temperatures of 450°C to 600°C in a short time. For this reason, authentic Italian restaurants and the like use stationary pizza ovens made of stacked fire bricks and stones.

On the other hand, in order for a portable pizza oven to demonstrate performance comparable to a stationary pizza oven, it is necessary to use structural materials with a high degree of fire resistance and heat retention. As a pizza oven, it had problems such as being heavy and requiring complicated assembly and disassembly processes.

Utility model registration No. 3177873 Utility model registration No. 3234549

Therefore, this idea provides a full-fledged portable pizza oven that is lightweight and easy to assemble and disassemble, using a material that is comparable in fire resistance and heat retention to firebrick and stone.

The portable pizza oven according to the present invention includes a combustion chamber that is arranged in the lower part of the pizza oven body and has a pedestal and a first side wall that are equipped with an intake port that connects to the outside, and a combustion chamber that is arranged in the upper part of the combustion chamber that is arranged in the upper part and that is connected to the outside. A pizza baking chamber having a dome-shaped top plate with a connecting exhaust port and a second side wall, and a partition plate disposed between the combustion chamber and the pizza baking chamber and having a plurality of ventilation holes. The pedestal, the first side wall of the combustion chamber, the partition plate, the second side wall of the pizza baking chamber, and the dome-shaped top plate are each made of separable fire-resistant block material.

Further, in the present invention, the first side wall of the combustion chamber and the second side wall of the pizza baking chamber are each formed into an annular body, and the annular body is formed into segments of the same size that can be divided in the circumferential direction. It is characterized by Further, the second side wall is formed by vertically stacking a plurality of annular bodies.

Further, the segment is divided into three parts, each having a central angle of 120 degrees.

Further, the segments are fixed to the pedestal, partition plate, or top plate by a plurality of reinforcing bars passing through each segment.

Furthermore, the reinforcing bars are arranged at intervals of 60 degrees in the circumferential direction.

Moreover, the fire-resistant block material includes a porous material. Further, the porous material is characterized in that it contains at least one of pumice, shirasu material, and glass-based material.

Furthermore, at least one of the above-mentioned pumice, shirasu material, and glass-based material is contained in the refractory block material in a volume ratio of 20% to 70%.

According to the present invention, the pedestal of the combustion chamber, the side wall of the combustion chamber, the partition plate, the side wall of the pizza baking chamber, and the dome-shaped top plate are each made of splittable fire-resistant block material, making assembly easy. It has the effect of being easy to disassemble. Furthermore, since the pizza oven according to the present invention uses a porous fire-resistant block material containing at least one of pumice, whitebait material, and glass-based material, it is lightweight and easy to carry. This makes it possible to create an assembled portable pizza oven that is highly fireproof and heat-retaining.

In addition, the side walls of the combustion chamber and the side walls of the pizza baking chamber are each constructed by stacking a plurality of annular bodies in the vertical direction, and each of the annular bodies is composed of segments of the same size that can be divided in the circumferential direction. Therefore, it becomes easy to expand the dimensions of the pizza oven using the same members, and there is also an effect that mass production is excellent.

FIG. 1 is an external view of the assembled portable pizza oven of the present invention. FIG. 1 is a longitudinal cross-sectional view of the assembled portable pizza oven of the present invention. FIG. 1 is a schematic diagram showing the assembled portable pizza oven of the present invention in an open state; FIG. 2 is a top view of the pedestal of the portable pizza oven of the present invention. FIG. 2 is a schematic diagram of the portable portable pizza oven of the present invention in which side wall segments are arranged in one stage on the pedestal; FIG. 3 is a top view of the bulkhead plate of the assembled portable pizza oven of the present invention. FIG. 2 is a schematic diagram of the portable pizza oven of the present invention in which side wall segments are arranged in one stage on the side wall plate;

EMBODIMENT OF THE INVENTION Hereinafter, the assembled portable pizza oven which is Embodiment 1 of this invention is demonstrated. Note that this embodiment shows an example of the embodiment of the present invention, and it goes without saying that the present invention can be implemented in other embodiments.

FIG. 1 is an external view of the assembled portable pizza oven of the present invention. Further, FIG. 2 is a sectional view taken along the line A-A' in FIG. 1. The height of the assembled portable pizza oven of the present invention is approximately 600 mm, and its outer diameter is approximately 350 mm, making it portable, but these values may vary depending on the dimensions and materials of each component. It may vary depending on the pizza baking conditions.

In the figure, 1 is the pedestal of the pizza oven, 2 is the first side wall that constitutes the combustion section of the pizza oven, 3 is a separator that separates the combustion section of the pizza oven from the pizza baking section, and 4 is the pizza baking section. 2nd side wall, 5 is a dome-shaped top plate that constitutes the pizza baking section, 6 is an exhaust port provided in the top plate, 7 is an intake port provided in the pedestal, 8 is a ventilation hole provided in the separating plate , 42 is a handle provided on the second side wall 4 constituting the pizza baking section, 22 is a handle provided on the first side wall 2 constituting the combustion section of the pizza oven, and 11 is provided on the pedestal. 12 is a reinforcing bar, 21 is a reinforcing bar through hole provided in the first side wall 2 constituting the combustion section of the pizza oven, 31 is a reinforcing bar through hole provided in a separator, 41 is a pizza baking hole. This is a through hole for reinforcing bars provided in the second side wall 4 constituting the section.

The structure of the assembled portable pizza oven according to the present invention consists of a combustion section consisting of a base 1, a first side wall 2, and a lower surface of a separator 3; It is roughly divided into two parts: a baking section consisting of a top plate 5 and a baking section. The outer dimensions of the dome-shaped top plate 5 are approximately 350 mm in diameter at the bottom, the height from the bottom to the zenith is approximately 173 mm, and the thickness is approximately 50 mm. Further, the diameter of the exhaust port 6 is approximately 50 mm. Of course, these numerical values can be changed freely according to other design conditions.

The combustion part is a part for burning fuel for heating the pizza oven, and combustion is performed by putting fuel such as firewood or charcoal into the combustion part and igniting it. Note that during combustion, air for combustion is supplied from outside the pizza oven through an intake port 7 provided at the bottom of the pedestal 1 and communicating with the outer wall of the pedestal 1. Note that the air after combustion is exhausted to the outside through the ventilation holes 8 of the separator plate 3 and from the exhaust port 6 provided in the dome-shaped top plate 5 constituting the pizza baking section. Furthermore, a grate rostle (not shown) can also be placed on the pedestal 1.

The hot air generated by combustion in the combustion chamber directly heats the lower surface of the separator 3 by radiation or convection, heats the surface by heat conduction, and is introduced into the firing section through the plurality of ventilation holes 8 provided in the separator 3. be done.

Materials such as pizza dough for cooking are placed on the upper surface of the separator 3, and heat transfer from the upper surface of the separator 3 and convection of hot air introduced from the ventilation holes 8, as well as a dome-shaped The radiant heat reflected from the inner surface of the top plate provides comprehensive heating, making it possible to bake pizza dough and the like evenly.

In addition, in the cross-sectional view 2, the pedestal 1, the first side wall 2, the separator 3, the second side wall 4, and the dome-shaped top plate 6 each have a reinforcing bar through hole 11 for penetrating the reinforcing bar 12, 21, 31, 41 and 51 are provided. In this pizza oven, each component is connected by reinforcing bars penetrated through the through holes for these reinforcing bars to maintain mechanical strength.

Moreover, FIG. 3 is a schematic diagram showing a state in which some segments 2a and 4c of the first side wall 2 and the second side wall 4 are pulled out and opened. The first side wall 2 is configured so that it can be divided into three parts, each with a central angle of 120 degrees, and by pulling out only a part of the segments 2a using a handle 22, fuel such as firewood can be supplied to the combustion section. I can do it. After the fuel is supplied, the pulled out segment 2a is returned to its original position, and combustion is performed with the first side wall 2 sealed. Air necessary for combustion is supplied from the vent 7. During combustion, air necessary for combustion may be supplied through the opening of the segment 2a with the segment 2a removed, and this can be freely adjusted depending on the type of fuel and the heating temperature.

Similarly, the second side wall 4 is configured so that it can be divided into three parts, each with a central angle of 120 degrees, and by pulling out only a part of the segments 4c using a handle 42, the surface of the partition wall plate 3 in the firing section can be divided into three parts. Cooking ingredients such as pizza dough can be provided on top. Note that the segment that can be pulled out is not limited to 4c in FIG. 3, and may be any part of the second side wall 4. For example, a handle 42 may be attached to the segment 4a above the segment 2a in FIG. 3 so that it can be pulled out. Good too.

Here, the first side wall 2 of the pedestal 1 has a three-tier configuration in the vertical direction, but it may have one, two, or four or more levels depending on the specific design values of the pizza oven. can.

For segments 2a and 4a that are scheduled to be pulled out for the above-mentioned openings, take measures such as not inserting the reinforcing bars 12 into the reinforcing bar through holes 21 and 41 in advance, or pulling out some or all of them as necessary. is necessary.

Next, the configuration of the combustion chamber will be described in detail based on FIG. 4. FIG. 4 is a top view of the pedestal, and the suction port 7 opens at the center of the top surface. The diameter of this opening is, for example, about 50 mm. The suction port 7 penetrates the inside of the pedestal 1 as indicated by a broken line 71 and similarly opens on the outer surface of the pedestal 1 with a diameter of about 50 mm, and supplies air necessary for combustion from outside the pizza oven. Note that, as long as the opening position of the suction port 7 on the outer surface of the pedestal 1 is the side surface of the pedestal 1, it goes without saying that the opening may be opened at another position. Further, the diameter of the opening is not limited to 50 mm, and the diameter of the opening on the top surface of the pedestal 1 may be different from the diameter of the opening on the outer surface.Furthermore, the shape of the opening is not limited to a perfect circle, but may be an ellipse, etc. It can be freely determined according to the design matters.

Further, on the surface of this pedestal 1, six through holes 11 for reinforcing bars are arranged at 60 degree intervals at positions closer to the outer periphery. The diameter of this reinforcing bar through hole 11 is about 8 mm, but it can be freely determined depending on the strength of the reinforcing bar 12 used. Note that the above-mentioned spacing does not have to be strictly 60 degrees, and may be larger, for example, 12 pieces at 30 degree intervals in order to maintain the strength of the pizza oven as a whole. Further, the diameter of the pedestal 1 is approximately 350 mm, and the thickness thereof is approximately 100 mm, but it goes without saying that these dimensions can be freely changed in relation to other design values.

Furthermore, FIG. 5 shows a state in which segments 2a, 2b, and 2c constituting the first side wall 2 are arranged on the pedestal 1. The segments 2a, 2b, and 2c are sections of an annular body divided into three parts with a center angle of 120 degrees, and the first side wall 2 as one annular body is formed by joining the three sides in the circumferential direction at position 23. Form. Further, the dimensions of the segment are, for example, about 50 mm in both thickness and width of the annular portion, but of course they can be determined freely according to other design values. Note that when these segments are joined to adjacent segments, no special adhesive or the like is required, and it is sufficient to bring them into close contact. However, the joints may be covered with mortar, metal plates, etc. that are easy to remove. Moreover, the side wall of this annular body is not limited to one stage, but can be constructed by laminating a plurality of stages. For example, the examples shown in FIGS. 1 to 3 show the case where three layers are stacked.

FIG. 6 shows a top view of the partition plate 3. Twelve ventilation holes 8 are arranged along the circumference on the plate at 30 degree intervals at positions about 115 mm from the center in the radial direction. Further, on the outside thereof, six reinforcing bar through holes 31 are similarly arranged at 60 degree intervals at positions about 150 mm from the center in the radial direction. Further, although the diameter of the vent hole 8 is approximately 20 mm, it can be freely designed depending on the combustion situation and the like. Further, the diameter of the partition plate 3 is about 350 mm, similar to the pedestal 1, and the thickness is about 100 mm. Note that the number of the above-mentioned ventilation holes 8 does not necessarily have to be 12, and the number of reinforcing bar through-holes 31 does not necessarily have to be six, and it goes without saying that they can be set freely in relation to other design matters.

FIG. 7 shows a state in which segments 4a, 4b, and 4c constituting the second side wall 4 are arranged on the partition plate 3. As shown in FIG. Each segment is a section of an annular body divided into three parts with a central angle of 120 degrees, and the second side wall 4 as one annular body is formed by joining the three sides in the circumferential direction at a position 43. The dimensions of the segment are, for example, about 50 mm in both thickness and width of the annular portion. Note that when joining these segments 4 to adjacent segments 4, no special adhesive or the like is required, and it is sufficient to bring them into close contact. However, the joints may be covered with mortar, metal plates, etc. that are easy to remove. Further, the second side wall 4 of this annular body is not limited to one stage, but can be constructed by laminating a plurality of stages.

Furthermore, since the segments 2a, 2b, 2c and the segments 4a, 4b, 4c are made of the same dimensions and materials, these segments are compatible with each other, reducing the number of parts and increasing the degree of freedom in design. can.

Since the assembled portable pizza oven according to the present invention has the above-described configuration, it is not only easy to carry, assemble and disassemble, but also allows the use of common parts as described above, and allows the combustion chamber to be changed as needed. Can accommodate changes in size and firing chamber size.

Next, let's talk about the materials used in this pizza oven. Normally installed full-scale pizza ovens use firebrick or stone as materials, so they can weigh more than 1 ton in some cases, making them completely unsuitable for portable use.

On the other hand, conventional portable pizza ovens use metal plates such as tin plates, stainless steel plates, iron plates, aluminum plates, and copper plates as materials to satisfy both heat resistance and light weight. However, since these metal materials have higher thermal conductivity than firebrick or stone, they have a problem in that they have a small heat capacity and poor heat retention when baking authentic pizza.

Therefore, in the present invention, we decided to use firebrick containing a porous material such as pumice as the material. These materials are not inferior to conventional refractory bricks in terms of fire resistance and heat capacity, that is, heat retention, but their weight is over 3 kg for a regular JIS refractory brick measuring 230 x 114 x 65 (mm). Although it is the same size, it can be manufactured at a weight of approximately 600g, which is approximately one-fifth of the weight of a normal product.

In the present invention, as the porous material, a material containing at least one of pumice, shirasu material, and glass material is used. A method for producing firebrick using such a material is described, for example, in JP-A-2023-38655 (Patent No. 7315252).

For example, in the same document, as a method for producing a hydraulic composition for bricks, etc., water is prepared in a volume ratio of 15% to 40%, aggregate is prepared in a range of 20% to 70%, Cellulose nanofiber prepared in the range of 0.1% to 15%, functional material prepared in the range of 0.2% to 20%, and cement powder prepared in the range of 10% to 30%. or a binder other than cement powder prepared in the range of 10% to 30% and a hardening agent prepared in the range of 2% to 20%, or both.

Here, as the aggregate prepared in the range of 20% to 70%, porous materials such as whitebait, pumice, and glass-based materials can be used. By using unused porous materials such as volcanic ash and glass from Sakurajima, and pumice washed ashore from the submarine volcano Fukutokuoka Noba, it is possible to contribute to regional revitalization in addition to weight reduction and fire resistance. .

In particular, whitebait has traditionally been considered unsuitable as a general construction material because it is porous and absorbs too much water, but it is used as a material for pizza ovens, where water resistance is not required, only fire resistance and heat retention. It is suitable as Additionally, since it is much lighter than ordinary firebricks, it is particularly suitable as a material for portable, prefabricated pizza ovens.

In other words, the assembled portable pizza oven of the present invention is lightweight and suitable for portability, has excellent fire resistance and heat capacity, that is, heat retention, comparable to stone ovens, and is easy to assemble and disassemble, so it can be used outdoors. We can provide authentic pizza at events, etc. It can also contribute to the development of industry by making effective use of waste materials such as whitebait, which have not been used much in the past.

1 Pedestal of the pizza oven 2 First side wall 2a forming the combustion section of the pizza oven Segment 2b forming the first side wall Segment 2c forming the first side wall Segment 3 forming the first side wall Combustion of the pizza oven Separation plate 4 that separates the pizza baking section from the pizza baking section Second side wall 4a that makes up the pizza baking section Segment 4b that makes up the second side wall Segment 4c that makes up the second side wall Segment 5 that makes up the second side wall Pizza Dome-shaped top plate 6 that constitutes the baking section Exhaust port 7 provided on the top plate Intake port 8 provided in the pedestal Ventilation hole 11 provided in the separator plate 11 Through-hole for reinforcing bars 12 provided in the pedestal Rebar 21 Pizza A through-hole for reinforcing bars 22 provided in the first side wall constituting the combustion section of the oven A handle 31 provided in the first side wall constituting the combustion section of the pizza oven A through-hole for reinforcing bars 41 provided in the separator Through-hole 42 for reinforcing bars provided in the second side wall constituting the pizza baking section Handle provided in the second side wall constituting the pizza baking section

Claims (9)

A combustion chamber having a pedestal and a first side wall, which is arranged in the lower part of the pizza oven body and has an intake port connected to the outside, and a dome-shaped ceiling which is arranged in the upper part of the combustion chamber and has an exhaust port connected to the outside. a pizza baking chamber having a plate and a second side wall; and a partition plate disposed between the combustion chamber and the pizza baking chamber and having a plurality of ventilation holes, the pedestal, the first side wall, and the partition wall. An assembly type portable pizza oven characterized in that the plate, the second side wall, and the dome-shaped top plate are each made of a refractory block material that can be divided. The first side wall and the second side wall are each an annular body, and the annular body is composed of segments of the same size that can be divided in the circumferential direction. Assembleable portable pizza oven. 3. The portable pizza oven according to claim 2, wherein the segment is divided into three parts each having a central angle of 120 degrees. The portable portable device according to any one of claims 2 to 3, wherein the segments are fixed to the pedestal, the bulkhead plate, or the top plate by a plurality of reinforcing bars passing through each segment. Pizza oven. 5. The portable pizza oven according to claim 4, wherein the reinforcing bars are arranged at intervals of 60 degrees in the circumferential direction. 4. The portable pizza oven according to claim 2, wherein the second side wall is formed by vertically stacking a plurality of the annular bodies. The assembled portable pizza oven according to any one of claims 1 to 3, wherein the fireproof block material includes a porous material. 8. The portable pizza oven according to claim 7, wherein the porous material includes at least one of pumice, shirasu material, and glass material. The prefabricated portable pizza oven according to claim 8, wherein at least one of the pumice, the shirasu material, and the glass-based material is contained in the refractory block material in a volume ratio of 20% to 70%.