JP4212495B2 - High-temperature heating device and microwave irradiation device that generate radiant heat and conduction heat, and a double-sided heating cooker that is installed independently in the oven case chamber, and a method of manufacturing the same. . - Google Patents

Description

  The present invention relates to an oven-type double-sided heating cooker that includes a vertical heating device that uses gas or electricity as a heat source, and can simultaneously irradiate microwaves, a device that moves the heating device up and down, and a method for manufacturing the same.

  Conventional oven-type cooking devices have a top and bottom fixed heating system consisting of an upper heating device fixed to the ceiling of the chamber and a lower heating device fixed to the floor of the chamber, and heats the air in the chamber. There is a heat circulation system that circulates, but when cooking foods, all of the large interior must be warmed up, and the amount of heat required for that is large, so the interior rises to the set temperature. Had the problem of taking time.

  In addition, in the upper and lower fixed heating method, the lower part of the food is directly heated, but since the distance between the food and the upper heating device is large in the upper part of the food, air is interposed and heat transfer becomes worse. And in the case of a foodstuff with a low height, compared with the case of a high foodstuff, the temperature and calorie | heat amount by which the foodstuff upper part is heated fall by the part which is separated from an upper heating apparatus. Therefore, it is necessary to predict the cooking results based on the temperature and amount of heat at which the upper and lower parts of the food are heated, and to set the temperature of the vertical heating device, but this must be determined from the amount, size, moisture content, weight, etc. of the food It is said that it is difficult and requires experience and feeling.

  In the case of the heat circulation method, it is said that the surface of the ingredients can be heated evenly, but in reality the upper part is hotter than the lower part in the cooking cabinet, and if there are many ingredients to cook, the heat circulation Worsens and causes a temperature difference. However, due to the structural characteristics, there is a drawback that the upper and lower temperature cannot be adjusted.

  Further, when the food material is heated, water vapor is generated from the surface, and the food material, the air around the food material and the portion constituting the interior are cooled by the heat of vaporization. In addition, the heat radiated and transmitted from the upper heating device is also cooled by the steam before reaching the food, and the power to heat the upper part of the food is significantly reduced, so that the generation of water vapor is stopped and the set temperature is recovered. Had the problem of taking time.

  Furthermore, although the amount of steam generated increases as the amount of food to be heated increases, the conventional oven-type cooking device needs to keep the internal temperature at a set temperature at all times. However, if the food door is opened and water vapor is discharged, the heat energy held in the cabinet for the purpose of heating the food flows out of the cabinet, Since the cold air flows in at a time, the environmental temperature in the warehouse drops rapidly, and there is a problem that it takes a long time to recover the set temperature again.

  The problem to be solved is that, in the case of a fixed heating system in which the upper heating device cannot move up and down according to the difference in the height of the food, the food with the lower height is lower than the upper with the food with the higher height. This is the point that the heating and baking of this proceeds.

  Also, the temperature in the chamber is not uniform in the horizontal direction toward the wall surface in the chamber, and the temperature decreases from the center of the heating plate toward the wall surface, so that the cooking result varies depending on the position where the food is placed. .

  Furthermore, the steam generated from the food during heating takes the heat of the food and the equipment in the cabinet, lowers the temperature of the food and the food, and in addition, the steam staying at the top of the food is heated from the top heating device to the top of the food The point is to reduce the temperature and quantity.

  Further, in an oven-type heating cooker of the current home type in which an oven and a range are integrated, heating operation by an electric heater and a microwave oscillation device cannot be performed at the same time.

  In an oven-type cooking device, the heat capacity of the internal space and the components that make up the internal storage is large, and it takes a very long time for the internal temperature to reach the set temperature after starting operation. There is a point that it is necessary to operate and set the inside of the cabinet to a set temperature, which requires a running cost.

  Also, it takes time to change the set temperature in the cabinet. In particular, when the internal temperature that has reached the set temperature is lowered, the internal temperature is quite low until the preset temperature because the heat capacity accumulated in the internal space and the members constituting the internal storage is large. The point is not to descend.

  In addition, the heat accumulated in the cabinet is transferred to the outside of the cabinet via the oven case, etc., and released, raising the environmental temperature of the installation location, lowering the efficiency of the refrigerator and cooling, and worsening the work environment Is a point.

  In addition, the oven-type cooking device has a large volume and weight because it uses a large amount of heat insulating material for the purpose of preventing the outflow of heat accumulated in the warehouse, and it takes time to transport and move. Is a point.

  In addition, since the inside of the warehouse is hot during operation, there is a high risk of burns to the hands and arms due to contact with the inside members when the food is taken in and out.

Means for Solving the Invention

  The vertical heating device of the present invention comprises a graphite plate refined to a purity of pure carbon and uniformly kneaded with ceramics, shaped into a plate shape and then heated and heated, a heat reflecting plate with a back surface thermally insulated, and It is a radiant heat and conduction heat generator that is independently installed in an oven case, with a heat source composed of a gas burner or electric heater as an integral structure, and is heated from the back of the graphite plate with a gas burner or electric heater. The main feature is that the food is cooked in a short time with the generated high-temperature infrared radiant heat and conduction heat.

  Also, the radiant heat and conduction heat generator with the side cover of the cooking space to prevent the heat outflow in the horizontal direction of the cooking space is moved up and down to an appropriate position above the food material. Since the lower radiant heat and conduction heat generator is set at an appropriate position from the lower part of the food, cooking is performed at the same time, microwave is irradiated to the center of the food for the purpose of raising the temperature. Therefore, the main feature is to enable uniform cooking in a short time.

  In the present invention, the vertical radiant heat and conduction heat generator installed in the oven case and the side cover of the cooking space installed from the side of the upper graphite plate to the bottom sandwich the food. Only the cooking space constitutes the cooking environment, and the generated heat is high in temperature due to the characteristics of graphite and has a high penetration power, and the side cover of the cooking space prevents heat from flowing out. It can be cooked.

  In addition, by installing an intake port from the outside and an exhaust port toward the outside, the water vapor generated from the food is heated by the high temperature radiated from the graphite plate and becomes superheated steam while expanding and becomes a cooking space. Then, it flows out into the oven case via the steam drain installed on the side cover of the cooking space, and is discharged to the outside through the exhaust port. Furthermore, the heating temperature of the graphite plate of the radiant heat and conduction heat generator is high and rich in penetration power, the cooking space is small, and the infrared rays pass through the water vapor, so the temperature for heating the ingredients drops. It is difficult to do.

  The radiant heat and conduction heat generator of the present invention is characterized in that an electromagnetic wave blocking punching plate is installed on a graphite plate for the purpose of protecting the electric heater from being broken by microwaves.

  In addition, the present invention is the minimum cooking space according to the foodstuff, in which the vertical position of the radiant heat and conduction heat generator is set according to the height of the foodstuff as described above, and the space is limited by the side cover of the cooking space. The upper and lower graphite plates are easy to heat by the powerful heating of the gas burner or electric heater on the back, and are easy to cool because of their small mass and thin structure. The operation of the heat source is controlled by a temperature sensor provided inside the graphite plate, and the temperature of the graphite plate can be kept at the set temperature, and the reset temperature can be realized in a short time.

  Furthermore, the outer surface of the radiant heat and conduction heat generator is strongly insulated except for the surface that heats the food on the graphite plate, and the air taken in from the air inlet installed in the oven case It passes through the heat generation device and the space inside the oven case, reaches the exhaust port, and is discharged to the outside. This is also effective for heat insulation, and the effect of the heat insulating material installed inside the oven case wall is also effective. There is a structure in which the heat inside the oven case is difficult to transfer to the outside.

  In addition, when the in-compartment conveyor belt device and the out-of-conveyor belt device of the present invention are interlocked, when the food is taken in and out of the inside of the warehouse, only the work on the out-of-conveyor belt device may be performed.

The invention's effect

  The oven-type double-sided heating cooker of the present invention moves the upper and lower radiant heat and conduction heat generators up and down according to the height of the ingredients to bring them closer to the upper and lower parts of the ingredients, and the cooking space with the side cover of the cooking space. By limiting, the upper and lower parts of the food can be heated evenly, the heat generation temperature of the graphite plate is uniform everywhere on the plate surface, and the heat insulation and heat from the oven case cabinet by the side cover of the cooking space There is an advantage that it can be heated uniformly regardless of the place where the food is placed.

  In addition, when heating the upper and lower parts of the food with a gas type vertical radiant heat and conduction heat generator, and simultaneously irradiating the center of the food with microwaves, the microwave that was not directly absorbed by the food is reflected by the upper and lower heat reflections. There is an advantage that the ingredients are irradiated while being repeatedly reflected between the plates and between the side covers of the cooking space, the ingredients are heated from the center, and the inside and outside of the ingredients can be cooked simultaneously in a short time.

  Furthermore, the steam generated from the food is discharged from the steam drain installed on the side cover of the cooking space to the outside through the exhaust port, thereby preventing a temperature drop in the cooking space and stable cooking.

  In the oven-type double-sided cooking device of the present invention, the microwave entrance path is cut off and the electric heater is protected by the installation of the electromagnetic wave shielding punching plate and the heat reflecting plate. There is an advantage of being able to drive.

  The radiant heat and conduction heat generator of the present invention does not need to heat the entire interior of the oven case, and the upper and lower spaces between the upper and lower graphite plates with the food sandwiched between the horizontal space by the side cover of the cooking space are limited as the cooking space. Because of the designed design, the mass to be heated is small and the temperature rise and fall can be realized quickly. Further, since the start-up is quick, there is no need to perform a preheating operation when cooking is not performed, and there is an advantage that running cost is reduced.

  In addition, the oven-type double-sided cooking device of the present invention has a structure that little heat flows out of the refrigerator, so that it is difficult to raise the environmental temperature of the installation place and hardly affect the installation environment due to the temperature rise.

  Furthermore, when the food is taken in and out of the warehouse, it is linked with the conveyor belt outside the warehouse, and the food is taken in and out of the conveyor belt, so that it is not necessary to put hands and arms directly into and out of the warehouse. The risk of burns in contact with the part is very low.

  The oven-type double-sided cooking device of the present invention has an advantage that it can be carried into the installation place in a divided state and can be carried in, assembled and installed easily by adopting a prefabricated structure that is easy to assemble. .

  The present invention aims to reduce heat loss and effectively cook in a short time as compared to conventional oven-type cooking devices, with the upper radiant heat and conduction heat generators shown in FIGS. 4 and 5 and the side of the cooking space. By installing the cover 41 and the lower radiant heat and conduction heat generators with the microwave irradiation devices 27 and 28 in the oven case 17 so as to be vertically movable, Independent cooking environment can be realized in the minimum cooking space according to the height of the ingredients, and it is realized with good heat insulation, safe operation and lightweight structure.

  FIG. 4 is an explanatory diagram of a gas type radiant heat and conduction heat generator. The upper gas burner 4 is fixed to the inner upper part of the upper heat reflecting plate 5 with a screw with the heat radiation port facing downward. Under the upper gas burner 4, the peripheral side surface of the upper graphite plate 8 provided with the temperature detection sensor 30 is fixed to the lowermost part of the inner side surface of the upper heat reflecting plate 5 with screws. Furthermore, the inner side of the upper end of the side cover 41 of the U-shaped cooking space shown in FIG. Install on the side and fix the side with screws. From above, the sleeve 7 for vertical movement is fixed with a screw, and the heat insulating layer 36 of the preheated upper heat reflecting plate is fixed on the back surface of the upper heat reflecting plate 5 and fixed with the screw. It is suspended on a shaft 26 with a rack gear for vertical movement that is fitted into the pinion gear box 25 for movement, and suspended on the ceiling portion of the oven case 17 by a column 24 of the gear box for vertical movement.

  FIG. 5 is an explanatory diagram of the gas-type lower radiant heat and conduction heat generator, and has a structure in which FIG. 4 is turned upside down without installing the side cover 41 of the cooking space.

  FIG. 8 is a side view of the in-compartment conveyor belt device, in which a mesh-structured stainless steel conveyor belt 23 is supported by four conveyor belts and a driving roller 15, and one supporting roller is a driving roller. It is a coaxial rotation roller that also serves as

  FIG. 1 is a cross-sectional view of an embodiment of a gas oven type double-sided heating cooker, and a vertical movement rack gear shaft 26 is attached to the back of the upper radiant heat and conduction heat generator of FIG. This is incorporated in the box 25 and attached to the ceiling of the oven case 17 by the support of the vertical movement gear box 24, but the vertical movement rail 3 fitted with the vertical movement sleeve 7 to eliminate blurring during vertical movement. And attach to the ceiling. 5 is also attached to the floor of the oven case 17 in the same procedure. Further, the conveyor belt device of FIG. 8 is installed in a state in which the lower radiant heat and conduction heat generators are enclosed, and fixed to and supported by the floor of the oven case 17 by the support roller support column 16 of the conveyor belt.

  The embodiment of FIG. 6 is a cross-sectional view of an electric upper radiant heat and conduction heat generator, and is a punching plate for blocking electromagnetic waves on a graphite plate in close contact with the upper portion of the upper graphite plate 8 on which the temperature sensor 31 is installed. 32 is fixed with screws, and the four side surfaces of the upper graphite plate 8 are integrated with screws 39 for fixing the graphite plate and the heat reflecting plate to the inner vertical surface of the upper heat reflecting plate 5. Further, the upper electric heater 34 is fixed to the inside of the ceiling portion of the upper heat reflecting plate 5 with bolts and nuts. Further, an integrally shaped heat insulating layer 36 is fixed to the back surface of the upper heat reflecting plate with bolts and nuts. Further, the side cover 41 of the cooking space is fixed simultaneously with screws 39 for fixing the graphite plate and the heat reflecting plate.

  FIG. 7 is a cross-sectional view of an electrical lower radiant heat and conduction heat generating device, in which a punching plate 33 for shielding electromagnetic waves under a graphite plate is adhered to the lower portion of the lower graphite plate 12 with screws, The four side surfaces of the graphite plate 12 are integrated with screws 39 for fixing the graphite plate and the heat reflecting plate to the inner vertical surface of the lower heat reflecting plate 13. The lower electric heater 35 is fixed to the floor portion of the lower heat reflecting plate 13 with bolts and nuts. Further, a heat insulating layer 37 of the integrally shaped lower heat reflecting plate is fixed to the back surface of the lower heat reflecting plate 13 with bolts and nuts.

  In the small home-use machine, the oven and the microwave oven can operate at the same time. The medium-sized machine is operated at 600 ° C, which can only be heated with a foreign-made stone kettle. For cooking yakitori, hamburger steaks, and baking bread at restaurants and fast food stores in a short time, and for large machines installed in bakery factories and other food processing factories As a result, significant time and cost savings are expected.

It is side surface sectional drawing which shows the Example of an oven type double-sided heating cooking machine. Example 1 It is side surface sectional drawing which shows an Example when an upper radiant heat and conduction heat generator (FIG. 4) is dropped according to the height of foodstuff. It is side surface sectional drawing which shows the Example when a conveyor belt outside a warehouse and a conveyor belt outside a warehouse interlock | cooperate after completion | finish of cooking, and carried out foodstuffs. It is side surface sectional drawing which shows the Example of a gas type top radiant heat and conduction heat generator. It is side surface sectional drawing which shows the Example of a gas type | mold bottom radiant heat and conduction heat generator. It is side surface sectional drawing which shows the Example of an electrical top radiant heat and conduction heat generator. (Example 2) It is side surface sectional drawing which shows the Example of an electric-type bottom radiant heat and conduction heat generator. (Example 2) It is a side view which shows the Example of the conveyor belt apparatus in a store | warehouse | chamber. It is a side view of the side cover of cooking space. It is a top view of the side cover of cooking space.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Exhaust port 2 Electromagnetic wave blocking punching plate 3 Vertical movement rail 4 Upper gas burner 5 Upper heat reflecting plate 6 Flame 7 Vertical movement sleeve 8 Upper graphite plate 9 Food 10 Cooking dish 11 Conveyor belt support roller 12 Lower graphite plate 13 Lower heat reflector 14 Lower gas burner 15 Conveyor belt support and drive roller 16 Conveyor belt support roller column 17 Oven case 18 Elevating manual handle 19 Intake port 20 Door 21 for opening / closing food 22 Door opening / closing handle 22 Outside conveyor belt 23 Inside conveyor belt 24 Vertical movement gearbox support 25 Vertical movement pinion gearbox 26 Vertical movement rack geared shaft 27 Microwave diffusion lens 28 Microwave waveguide 29 Lower heat reflecting plate support 30 Graphite plate temperature sensor 31 Lower graphite plate temperature Degree detection sensor 32 Punching plate 33 for blocking electromagnetic waves on graphite plate Punching plate 34 for blocking electromagnetic waves under graphite plate Upper electric heater 35 Lower electric heater 36 Heat insulating layer 37 for upper heat reflecting plate 38 Heat insulating layer 38 for lower heat reflecting plate Inside monitoring window 39 Screws 40 for fixing the graphite plate and the heat reflecting plate 40 Insulating layer 41 of the oven case Side cover 42 of the cooking space Water vapor drain 43 Opening portion for taking out food

Claims (8)

  The upper gas burner (4 in FIG. 4) is fixed to the upper part inside the upper heat reflecting plate (5) with the heat radiation port facing downward, and the upper graphite plate (8) is located below the upper gas burner (4). A radiant heat and conduction heat generator (FIG. 4) for heating the food from the upper surface, attached with the side surfaces fixed to the inner side surface of the upper heat reflector (5), and the lower heat reflector (13) A lower gas burner (14 in FIG. 5) is fixed to the inner lower part with the heat radiation port facing upward, and further, a lower graphite plate (12) is placed on the lower gas burner (14), and a peripheral side surface of the lower heat reflecting plate (13) is attached. A gas-type oven-type double-sided heating cooker installed with radiant heat and conduction heat generators (Fig. 5) for heating food from the lower surface, attached to the inner side surface.   An upper electric heater (34 in FIG. 6) is fixed to the upper inside of the upper heat reflecting plate (5), an upper graphite plate (8) is further placed under the upper electric heater (34), and an electromagnetic wave on the graphite plate is blocked at the upper portion. Radiant heat and conduction heat generation that heats the food from above, with the punching plate (32 in FIG. 6) fixed in close contact, and with the peripheral side fixed to the inner side of the upper reflector (5) The lower electric heater (35 in FIG. 7) is fixed to the inner lower part of the apparatus (FIG. 6) and the lower heat reflector (13), and further, the lower graphite plate (12) on the lower electric heater (35) is attached to the lower part. The punching plate for shielding electromagnetic waves under the graphite plate (33 in FIG. 7) is fixed in close contact with the substrate, and the food is heated from the lower surface with the peripheral side surface fixed to the inner side surface of the lower reflecting plate (13). Radiant heat and conduction heat generator (Fig. 7) installed Oven double-sided cooking machine.   A hole penetrating the front and back is made in the plane of the lower graphite plate (12), and a microwave waveguide (28) and a microwave diffusion lens (27) are installed here, and a radiant heat and conduction heat generator (up and down) ( The oven-type double-sided heating cooker according to claim 1 or 2, further comprising a device for irradiating microwaves simultaneously with the operation of Figs. 4, 5, 6, and 7).   The side cover (41 of FIG. 1, FIG. 9, FIG. 10) of the cooking space provided for the purpose of preventing the heat outflow of a cooking environment around the lower side surface of the upper heat reflector (5) was provided. Oven-type double-sided heating cooker according to 2 or 3   A vertical radiating heat and conduction heat generator (Figs. 4 and 6) is attached to the vertical radiating and conduction heat generator, and the vertical radiant heat and conduction heat generator (Fig. 4) can be moved manually or electrically from the outside of the oven case. 4. The oven-type double-sided heating cooker according to claim 1, 2, 3 or 4, further comprising an elevating device for moving up and down (4, Fig. 6).   Lower radiant heat and conduction heat generator (Figs. 5 and 7) is attached with a vertical movement device, and the lower radiant heat and conduction heat generator (top and bottom) can be moved manually or electrically from the outside of the oven case ( The oven-type double-sided cooking heater according to claim 1, 2, 3 or 4, further comprising an elevating device for moving up and down (Figs. 5 and 7).   The upper graphite plate temperature sensor (35) and the lower graphite plate temperature sensor (36) are installed inside the upper graphite plate (8) and lower graphite plate (12) to control the operation of the gas burner or electric heater. The oven-type double-sided heating cooker of Claim 1, 2, 3, 4, 5 or 6 provided with the temperature sensing apparatus for performing.   Claims 1 and 2 comprising a conveyor belt (23) device for loading and unloading cooking ingredients installed in an oven case in an independent manner in conjunction with the outer conveyor belt (22). The oven-type double-sided heating cooker according to 3, 4, 5, 6 or 7.

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