JP2010084955A - Pizza baking machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pizza baking machine of which the wait time for cooking is extremely short. <P>SOLUTION: This pizza baking machine includes: (a) a casing 5 having a pizza baking space (2) and provided with an opening/closing door (4) at its opening (3); (b) a heating rack (6) for baking pizza, received in the pizza baking space (2), capable of being taken in and out from the opening (3) by sliding, and having ceramic coating on a metallic thin plate of high heat conductivity; (c) one or a plurality of bar-shaped carbon heaters (7), (8) disposed at upper and lower parts of the heating rack (6) for baking pizza; and (d) a reflecting plate (9) disposed at least on the upper bar-shaped carbon heater (7) of the heating rack (6) for baking pizza, recessively curved along the longitudinal direction of the bar-shaped carbon heater, and collecting the reflected radiation heat to a central part at a side of the heating rack for baking pizza. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a pizza baking apparatus that can burn a pizza, particularly a chilled pizza with a scorching surface, in an extremely short time without heat loss, and is optimal for use in a fast food pizza store.

  Pizza has traditionally been manufactured in a pizza kiln where bricks are piled up and are always on fire during use, but in recent years we have offered simple pizza products that are not at home or seriously in search of simplicity. In stores, microwave ovens and ovens are often used. Although it is used at home because it only reheats the already produced pizza in the microwave oven, it is actually baked long ago and only heats the water of the chilled pizza, so the taste itself is realistic, The recent trend toward the real thing, when it is baked from the dough, the surface is not burnt, and the cheese separates and the fat flows out, so it is not adopted at actual pizza stores.

  On the other hand, the conventional oven-type pizza kiln used in stores such as fast food stores used something like a sheathed heater using a nichrome wire heater, so the absorption of heat with respect to moisture is slow. It takes time to cook and waits for customers. In stores like fast food restaurants where waiting time is a match, it is required to allow customers to cook for a shorter time, and recently to give customers at least 2 minutes to reach them. A pizza kiln that could be used was required.

As a response to such a demand, a pizza baking apparatus (described in JP-A-10-52372) has been proposed in which a delicious pizza pie is thawed in a short time and baked. This one heats a hot plate by induction heating, provides a radiant heating element in the upper case provided above it, thaws the frozen pizza pie on the hot plate in a short time, and toppings cheese etc. by radiant heating from the top It is made to melt and bake. However, since this is a type in which a hot plate (iron plate) is heated by induction heating, a certain thickness is required. Therefore, it took some time for heating, and the demand for rapid cooking was not met, and heat loss was generated accordingly.
SUMMARY OF THE INVENTION An object of the present invention is to develop a pizza baking apparatus that can bake a pizza, particularly a chilled pizza, in a burned state in a very short time without heat loss. Is.

The pizza-baking machine (1) of “Claim 1”
(a) a casing (5) having a pizza-baking space (2), the opening (3) having an open / close door (4);
(b) Housed in the pizza baking space (2), arranged to be slidable through the opening (3), and formed with a ceramic coating layer (6b) on the thin metal plate (6a) with high thermal conductivity Heated pizza baking shelf (6),
(c) one or more rod-shaped carbon heaters (7), (8) disposed above and below the pizza baking heating shelf (6);
(d) Located at least on the bar-shaped carbon heater (7) above the pizza-baking heating shelf (6), is concavely curved toward the pizza-baking heating shelf (6), and the reflected radiant heat is heated for pizza baking. It is characterized by comprising a reflector (9) that condenses light at the shelf-side central portion.

  “Claim 2” relates to “carbon heater (8)” and “carbon heater (7), (8) according to claim 1 has a carbon fiber strip (10b) housed in a quartz glass tube”. Features.

  [Claim 3] relates to the improvement of the pizza baking apparatus (1) according to claims 1 and 2, "The outer periphery of the pizza (P) of the pizza baking heating shelf (6) on the pizza baking heating shelf (6)" Further, a ring cover (11) is provided to cover the portion, that is, the pie portion on which the topping is not placed.

  According to the pizza baking apparatus (1) of the present invention, the point of using the `` carbon heater (7) (8) '' inside as a heating source, in particular, the carbon fiber strip (10b) is a quartz glass tube (10a ) It is characterized by using "carbon heater (7) (8)" arranged inside. When energizing the carbon heater (7) (8), especially the carbon heater (7, 8) of the “fiber strip (10b)”, the very thin “carbon fiber” that forms the thin fiber strip (10b) The heating temperature according to the energized power is instantaneously reached, and the temperature of the heated pizza (P) and the temperature of the pizza baking heating shelf (6) are rapidly increased to a predetermined temperature. That is, most of the heat output from the upper carbon heater (7) is consumed for heating the pizza (P), which is the object to be heated, compared to the conventional device, and the generated heat rays are well absorbed by moisture. Infrared and far-infrared, and the pizza (P) as the object to be heated is directly irradiated or indirectly reflected by being reflected by the reflecting plate (9), and heat loss is small. In particular, since the reflector (9) is focused on the central part, the reflected light is focused on the central topping part where heat is difficult to pass against the peripheral edge of the pizza that is easily burnt. The streets of fire and the degree of scorching of the peripheral part are finished in the same time, and the shortest cooking time of about 2 to 1.5 minutes is realized.

  Hereinafter, the present invention will be described in detail according to embodiments shown in the drawings. The casing (5) of the pizza-baking machine (1) has a rectangular box shape, its front is open, the interior is a pizza-baking space (2), and the inside of the wall is a double wall structure. Thermal insulation layers (50) and (51) are formed on the entire surface in the ceiling and under the floor. Then, both sides of the casing (5), the back surface, the ceiling thermal insulation layer (50), and the lower side of the floor thermal insulation layer (51) are radiating cavities (K) through which air flows. In the illustrated embodiment, the back surface is a cavity (K), but it may be a heat insulating layer if necessary. A suction fan (13) is installed on either side of the casing (5) (lower one side in this embodiment), and a punching hole (53 ) From outside through a filter (not shown) to allow air to flow into the cavity (K) of the double wall structure of the casing (5).

  In addition, a power supply unit (14) is installed in the cavity (K) next to the cavity (K) of the double wall structure of the casing (5) (in the vicinity of the fan (13) in this embodiment), and the fan ( It is cooled by the cold air from 13). This power supply unit (14) controls the energization methods such as energization time and heating / cooling speed gradient of the ceramic heaters (7) and (8). The control plate (15) of the power unit (14) is provided on the right side of the front surface of the casing (5), and includes a power switch (16), a preheat switch (17), a numeric keyboard (18), and a numeric indicator ( Input means necessary for control such as 20) are provided together.

  Finger hook members (54) are attached to both sides of the casing (5) so that the pizza baking apparatus (1) can be carried. The inner wall of the casing (5) may be painted with metal (any color), but the inner surface of the casing may be ceramic coated or wrinkled as required.

  An opening / closing door (4) can be opened and closed via a support shaft (41) at the lower opening edge (3a) of the opening (3) of the casing (5). The open / close door (4) has a heat insulating window (4a) fitted with heat insulating glass so that the inside can be confirmed, and the periphery of the heat insulating window (4a) has a double wall structure with a cavity. It is designed so that there is no heat transfer to the door surface. If necessary, the cavity around the heat insulating window (4a) may be a heat insulating layer. A handle (4b) is attached to the upper surface of the open / close door (4). In addition, arms (42) project from the upper portions of the left and right ends of the open / close door (4). In addition, you may make it fill a cavity (K) with a heat insulating material as needed.

  The pizza-baking heating shelf (6) is a flat plate metal with excellent heat conductivity, for example, a thin plate (6a) such as copper or aluminum is used as the main body, and the ears (6c) are bent at the center of the left and right ends. It has a two-layer structure in which the upper surface, which is a contact placement surface with the pizza (P) that is the object to be heated, is a ceramic coating layer (6b). Of course, the pizza-baking heating shelf (6) may be composed of only the black-painted metal, but in order to improve the passage of fire to the pizza (P), the ceramic coating two-layer structure as described above. In this embodiment, this structure is adopted. In this case, the ceramic coating layer (6b) is preferably black as necessary.

  When the pizza-baking heating shelf (6) is interlocked with the open / close door (4) (in this embodiment, it is an interlocking type), the right and left sides of the double wall structure of the casing (6) are shown in FIGS. A pair of left and right guide bars (56) (56) are arranged from the back toward the opening (3) at the middle of the inner wall (55) (55). It slides with the left and right ends of the pizza-baking heating shelf (6) on top. And the ear | edge part (6c) of the heating shelf for pizza baking (6) and the arm (42) of the opening-and-closing door (4) are connected by the connection bar (43). In this embodiment, the pizza baking heating shelf (6) advances and retreats from the opening (3) on the front surface of the casing (5) as the door (4) rises and falls through the connecting bar (43). However, the present invention is not limited to this and may be moved independently.

  Carbon heaters (7) and (8) are carbon rods with caps attached to both ends of carbon rods (not shown), or inside a rod-shaped quartz glass tube (10a) filled with vacuum or inert gas. A fiber ribbon (10b) is housed, both ends of the quartz glass tube (10a) are sealed, and a base (10c) is attached to the sealing portion. In the present embodiment, the latter is used. The carbon heaters (7) and (8) to be used are disposed above and below the pizza baking heating shelf (6). The number used is one or more, and three in the upper and lower sides in this embodiment. Although there is no particular limitation on the arrangement method, in this embodiment, the arrangement is made in three rows parallel to the opening (3) from the opening (3) on the front surface to the back. The carbon heaters (7) and (8) are not limited to the linear rod-shaped ones as shown in the figure, but naturally include those in which the rod-shaped ones are formed in a spiral shape and used as a surface heater. In this case, one spiral rod-shaped carbon heater (7) (8) may be installed at the center of the pizza-baking heating shelf (6), or above and below it. A plurality of (for example, 3 pieces coincide with the vertices of a right triangle or an isosceles triangle) may be arranged side by side. In this way, a plurality of (in this case, 3 pieces) pizzas can be baked at the same time. I can do it.

  The reflector (9) is disposed at least on the carbon heater (7) above the pizza baking heating shelf (6). A thin metal plate with a mirror-finished reflective surface on the bottom, curved in the shape of an arc along the longitudinal direction of the upper carbon heater (7) (in this case, a straight bar) (in other words, , A concave reflecting surface obtained by cutting the cylinder as the central axis), and both front and rear ends thereof are joined to the front inner wall (5e) and the rear inner wall (5f) of the double wall structure of the casing (5). The reflecting plate (9) is not limited to this, and may be, for example, a spherical shape obtained by cutting a part of a sphere (this is called a hemispherical shape). When the carbon heaters (7) and (8) are formed in a spiral shape, the spiral carbon heaters (7) and (8) may be installed directly below the hemispherical shape as described above. Also, in this case, it is a fixed type, but in the replaceable type, for example, when baking a plurality of pizzas at once, a hemispherical part is appropriately provided so as to concentrate on each pizza, etc. The opening and closing door (3) may be changed so that the condensing position changes depending on the object and the baking method changes.

  On the floor side, three carbon heaters (8) (of course, one or more are optional) are installed in accordance with the upper carbon heater (7). Is heated directly. In this embodiment, a reflective box (12) having a top-opening box shape and having a mirror-finished inner surface is disposed so as to receive a carbon heater (8) on the floor side, and the size of the upper-surface opening is the heating for pizza baking. It is built about the same size as the shelf (6). Therefore, all the heat rays emitted from the carbon heater (8) on the floor side heat the pizza baking heating shelf (6). The floor-side carbon heater (8) may also be spiraled as above.

  The pizza baking apparatus (1) according to the present invention is sized so that it can store and bake a pizza (P) having a diameter of about 30 centimeters, but of course, it is not limited to this, and a plurality of pizzas (P). It may be such that it can be stored and baked.

  Then, when an order is received from a customer, it is predetermined on the pizza (P) dough in a chilled state (of course, but not limited to, raw dough or already cooked and cooled). Next, open the open / close door (4) of the pizza baking machine (1), and pull out the pizza baking heating shelf (6) that is linked (or unlinked) from the opening (3). , Put the pizza before cooking (P), then close the open / close door (4) and store the pizza baking heating shelf (6) on which the pizza (P) is placed in the casing (5), Turn on the switch to energize the carbon heaters (7) and (8).

  When the energized carbon heaters (7) and (8) use thin fiber strips (10b) (this is an example in the present embodiment), the very thin “carbon fibers” constituting the carbon heaters are instantaneous. The heating temperature corresponding to the energized power is reached, heat rays including infrared rays and far infrared rays that are well absorbed by moisture are emitted, toward the pizza (P) that is the object to be heated, or the reflector (9) and the reflection box ( The temperature of the pizza (P) and the pizza baking heating shelf (6), which are the objects to be heated, reflected by 12) is intensively and rapidly increased to a predetermined temperature. In particular, the reflected light of the carbon heater (7) on the ceiling side is designed to mainly concentrate on the central part of the pizza (P), so there is little heat loss and the inside is within 2 to 1.5 minutes. The pizza (P) is baked in a state that it is soft and has a burnt surface and crispy, and the topped cheese has flowed moderately without separation.

  Further, in the case where the ceramic coating layer (6b) is formed on the main body portion where the pizza baking heating shelf (6) is formed of the metal thin plate (6a) as in this embodiment, the ceramic coating layer ( Heat rays including infrared rays and far infrared rays are also emitted from 6b), and heating from the back surface is also efficiently performed.

  The second embodiment of the present invention is a case where a ring cover (11) is further provided on the pizza baking heating shelf (6) to cover the outer peripheral portion of the pizza of the pizza baking heating shelf. The ring cover (11) can be detached or replaced when the open / close door (3) is opened, and is set on the pizza (P) before heating. In this embodiment, it is for a single pizza and has a cap-like shape with a large through hole (11a) drilled in the ceiling, and the large through hole (11a) is sized to fit the topping range. . Thereby, it is possible to prevent the surface of the pie around the pizza (P) from being excessively burnt and over-burned. Large through-holes (11a) may be formed according to the number of pizzas (P) to be charged and used. The ring cover (11) itself may be formed by, for example, press forming a porous plate such as punching metal, or may be a single molded article. You can choose an appropriate one depending on the degree of burnt eyes.

Front view of the present invention Side view of the present invention A-a 'sectional view of FIG. A-a 'sectional view at the time of opening the door of FIG. B-b 'sectional view of FIG.

Explanation of symbols

(1) Pizza baking machine
(2) Pizza baking space
(3) Opening
(4) Open / close door
(5) Casing
(6) Heating shelf for pizza
(7) (8) Carbon heater
(9) Reflector
(10) Carbon fiber strip
(19) Quartz glass tube
(21) Pizza periphery
(22) Topping part
(P) Pizza

Claims (3)

A casing having a pizza-baking space and having an opening / closing door at the opening;
A pizza-baking heating shelf that is housed in a pizza-baking space, arranged so that it can be pulled out by sliding through an opening, and a ceramic coating is formed on a highly thermally conductive metal thin plate;
One or more bar-shaped carbon heaters disposed above and below the pizza-baking heating shelf;
A reflector disposed at least on a bar-shaped carbon heater above the pizza baking heating shelf, and having a concave curve toward the pizza baking heating shelf and condensing the reflected radiant heat at the central portion of the pizza baking heating shelf. A pizza-baking machine characterized by being constructed.   The carbon heater according to claim 1, wherein a carbon fiber strip is accommodated in a quartz glass tube.   The pizza baking machine according to any one of claims 1 to 3, further comprising a ring cover for covering the outer peripheral portion of the pizza of the pizza baking heating shelf on the pizza baking heating shelf.

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