Heating cooker

Abstract

To provide a heating cooker which has a simple structure and uses superheated steam.SOLUTION: A hydrogen oven 1 serving as a heating cooker according to the invention includes: a hydrogen burner 2 which causes hydrogen gas to be burned; a heating chamber 3 formed as a space for cooking a food M; and an intake part 4 capable of supplying air to the heating chamber 3. The hydrogen burner 2 is disposed in the heating chamber 3.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a cooking device, and more particularly to a cooking device that uses hydrogen. [Background technology]

[0002] Conventionally, cooking devices that use superheated steam to cook ingredients have been known (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2013-015272 A Summary of the Invention [Problem to be solved by the invention]

[0004] Conventional cooking devices using such superheated steam include a boiler to generate superheated steam. Depending on the cooking method and ingredients, other cooking mechanisms may be required to heat the surface of the food using electricity, gas, etc., in order to brown the surface of the food cooked with superheated steam. Thus, cooking devices using superheated steam require other components such as a boiler and other cooking mechanisms, and have a complex configuration.

[0005] SUMMARY OF THE PRESENT EMBODIMENTS Accordingly, an object of the present invention is to provide a cooking device that uses superheated steam and has a simple configuration. [Means for solving the problem]

[0006] In order to achieve the above-mentioned objective, the heating and cooking device of the present invention comprises a hydrogen burner that burns hydrogen gas, a heating chamber which is a space for cooking ingredients, and an intake section capable of supplying air to the heating chamber, and the hydrogen burner is arranged within the heating chamber.

[0007] In the hydrogen cooking device according to one aspect of the present invention, the intake section is capable of supplying air toward the burning hydrogen gas.

[0008] In one embodiment of the hydrogen heating cooking device of the present invention, the heating chamber has a superheated steam region and a flame region, the hydrogen burner is arranged in the flame region, and air supplied to the heating chamber from the intake section flows from the flame region toward the superheated steam region.

[0009] A hydrogen heating cooking device according to one embodiment of the present invention further includes an air blowing section provided in the heating chamber, the air blowing section being configured to generate an air flow in the heating chamber flowing from the flame region toward the superheated steam region.

[0010] The hydrogen cooking apparatus according to one aspect of the present invention further includes a transport unit capable of transporting food materials, the transport unit passing through the heating chamber.

[0011] In a hydrogen cooking device according to one aspect of the present invention, the transport section transports food material from the superheated steam region toward the flame region within the heating chamber. Effect of the Invention

[0012] According to the present invention, a cooking device using superheated steam can be configured simply. [Brief description of the drawings]

[0013] [Figure 1] 1 is a schematic diagram showing a schematic configuration of a hydrogen oven as a cooking device according to a first embodiment of the present invention. FIG. [Diagram 2] FIG. 2 is a diagram illustrating the internal structure of the hydrogen oven shown in FIG. [Diagram 3] FIG. 2 is a perspective view showing the schematic configuration of a hydrogen burner ejection body in a hydrogen oven. [Figure 4] FIG. 4 is a cross-sectional perspective view of a pipe line of the ejection body shown in FIG. [Diagram 5]FIG. 2 is a schematic diagram illustrating the configuration of a hydrogen oven. [Figure 6] FIG. 6 is a diagram showing a schematic configuration of a hydrogen oven according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that in the drawings, not all of the components provided in a plurality of parts are labeled with reference numerals, and the reference numerals of some of the components provided in a plurality of parts are omitted.

[0015] Fig. 1 is a diagram showing the schematic configuration of a hydrogen oven 1 as a cooking device according to a first embodiment of the present invention, and Fig. 2 is a diagram showing the schematic internal structure of the hydrogen oven 1. As shown in Figs. 1 and 2, the hydrogen oven 1 is equipped with a hydrogen burner 2 that burns hydrogen gas, a heating chamber 3 which is a space for cooking food M, and an air intake section 4 capable of supplying air to the heating chamber 3. The hydrogen burner 2 is disposed within the heating chamber 3. The configuration of the hydrogen oven 1 will be described in detail below.

[0016] 1 and 2, the hydrogen oven 1 has, for example, a body cover 20 which is a member that covers the heating chamber 3. The body cover 20 forms a space that is closed or approximately closed from the outside, and defines the heating chamber 3. The body cover 20 has, for example, an inlet 21 and an outlet 22 which are openings through which a transfer unit 5 described below passes. Note that the inlet 21 and the outlet 22 may be fitted with lids that enable the inlet 21 and the outlet 22 to be opened and closed.

[0017] As shown in Figs. 1 and 2, the hydrogen oven 1 includes a conveying unit 5 capable of conveying, for example, food material M. The conveying unit 5 passes through the heating chamber 3 and is capable of conveying, for example, food material M in a horizontal direction or a substantially horizontal direction. The conveying unit 5 is, for example, a belt conveyor. Specifically, for example, as shown in Fig. 1, the conveying unit 5 is configured by wrapping a metallic endless belt 5c around a pair of sprockets 5a and 5b. Also, for example, one or both of the pair of sprockets 5a and 5b are rotatably driven. The conveying unit 5 passes through the main body cover 20 through the inlet 21 and outlet 22 of the main body cover 20. The conveying unit 5 is, for example, configured by a series of multiple belt conveyors.

[0018] As described above, the hydrogen burner 2 is disposed in the heating chamber 3. The hydrogen burner 2 is configured, for example, in the heating chamber 3 so as to sandwich the transport section 5 from above and below. The hydrogen burner 2 has a pair of ejection bodies 10, as shown in, for example, Figs. 1 and 2, one of the ejection bodies 10 is provided above the transport section 5, and the other ejection body 10 is provided below the transport section 5. Also, as shown in, for example, Figs. 1 and 2, the pair of ejection bodies 10 face each other in the above and below direction via the transport section 5. The ejection body 10 is a member capable of supplying hydrogen gas and ejecting the supplied hydrogen gas to the outside.

[0019] As shown in Figures 1, 2 and 3, the ejection body 10 has a plurality of pipes 11. As shown in Figure 4, the pipes 11 have a space 12 to which gas can be supplied, and also have a plurality of open holes 13 which are holes that open the space 12 to the outside. The open holes 13 are configured, for example, so that the speed at which the gas supplied to the pipes 11 leaves the open holes 13 is greater than the combustion speed of hydrogen gas. Note that Figure 3 is a perspective view that shows a schematic configuration of the ejection body 10, and Figure 4 is a cross-sectional perspective view of the pipes 11 of the ejection body 10.

[0020] As shown in FIG. 3, the ejection body 10 has, for example, a buffer pipe 14. As shown in FIG. 5, the buffer pipe 14 has a space inside. That is, the buffer pipe 14 has a space extending in its extension direction, and is capable of guiding gas along the extension direction of the buffer pipe 14. Also, the buffer pipe 14 is formed in such a shape that it temporarily stores the gas supplied to the space and keeps the pressure of the gas in the space constant or approximately constant. As shown in FIG. 3, the buffer pipe 14 is provided with a plurality of pipes 11 so as to protrude in a direction intersecting the buffer pipe 14. One end 11a of the pipes 11 is connected to the buffer pipe 14, and the other end 11b of the pipes 11 is closed. Also, the space 12 of the pipes 11 communicates with the space inside the buffer pipe 14 at the end 11a.

[0021] 3, the buffer pipe 14 is formed in a cylindrical shape, and the pipe 11 is provided so as to protrude from the side surface of the buffer pipe 14. The internal space of the buffer pipe 14 is closed except for the pipe 11 and a portion communicating with a supply pipe 15 described later. The cross-sectional shape of the buffer pipe 14 does not have to be circular. For example, the cross-sectional shape of the buffer pipe 14 may be a polygon such as a triangle or a rectangle.

[0022] The pipe 11 extends along a straight line, for example, as shown in FIG. 3. The end 11a of the pipe 11 is connected to the buffer pipe 14, for example, as shown in FIG. 3, and the pipe 11 communicates with the space inside the buffer pipe 14. Also, as shown in FIG. 3, the end 11b of the pipe 11 is closed. Also, as shown in FIG. 3, for example, the multiple pipes 11 are arranged in parallel. Specifically, the multiple pipes 11 are arranged parallel or substantially parallel to each other at equal or substantially equal intervals. Note that the pipe 11 is not limited to extending along a straight line. For example, the pipe 11 may extend along a curved line, or may extend along a line that is a combination of a curved line and a straight line, or may extend in various shapes. Also, the multiple pipes 11 may not be provided in parallel as described above, and may have other postures or arrangements. Also, the cross-sectional shape of the pipe 11 may not be a circle as shown in FIG. 4. For example, the cross-sectional shape of the pipe 11 may be a polygon such as a triangle or a rectangle.

[0023] As shown in Figs. 1 and 2, the upper ejection body 10 is disposed in the heating chamber 3 so that the multiple ducts 11 are aligned parallel or approximately parallel to the conveying section 5 with the open holes 13 facing downward. Similarly, the lower ejection body 10 is disposed in the heating chamber 3 so that the multiple ducts 11 are aligned parallel or approximately parallel to the conveying section 5 with the open holes 13 facing upward. Also, as shown in Fig. 2, the ducts 11 of each ejection body 10 extend into the heating chamber 3 through a part of the main body cover 20. That is, a part of the ducts 11 extends into the heating chamber 3, and the other part of the ducts 11 is not in the heating chamber 3, and a part of the ducts 11 extends outside the main body cover 20. Also, the buffer ducts 14 are outside the main body cover 20.

[0024] Each pipe 11 is provided with a valve 11c for blocking the space 12 in the pipe 11 to prevent gas from being supplied to the open hole 13, as shown in FIG. 3, for example. The valve 11c has, for example, a manual cock, and the space 12 in the pipe 11 can be opened or closed by manually operating the cock. The valve 11c may be controlled by a drive device (not shown) to open or close the space 12 in the pipe 11. The valve 11c is provided between the buffer pipe 14 and the open hole 13 closest to the buffer pipe 14, as shown in FIG. 3, for example, and can partially block the space 12 in the pipe 11. The valve 11c is provided in the pipe 11 so as to be located outside the body cover 20.

[0025] As described above, the intake section 4 is capable of supplying air to the heating chamber 3. The intake section 4 is capable of supplying air, for example, toward the hydrogen gas being burned. The intake section 4 has a drive section 30 and a duct section 31, as shown in FIG. 1, for example. The drive section 30 is a mechanism for generating an airflow by passing air such as a rotationally driven fan. The duct section 31 is a duct that guides the airflow generated by the drive section 30 to the heating chamber 3, and has, for example, a supply duct 32 and a plurality of ejection ducts 33. The plurality of ejection ducts 33 branch off from the supply duct 32, penetrate a portion of the main body cover 20, and open to the heating chamber 3. The drive section 30 is provided in the supply duct 32. In this way, the duct section 31 is in communication with the heating chamber 3 via each ejection duct 33, and the airflow generated by the drive section 30 is guided to the heating chamber 3 through the duct section 31.

[0026] Also, the opening 33a of the ejection pipe 33 is provided at a position where air is supplied to the pipe 11 of the ejection body 10 of the hydrogen burner 2. For example, as shown in FIG. 1, the opening 33a of each ejection pipe 33 is located near each pipe 11 of the ejection body 10 of the hydrogen burner 2. Specifically, for example, as shown in FIG. 1, some of the ejection pipes 33 are provided so as to be located above the conveying section 5 in the heating chamber 3, and some of the openings 33a of these ejection pipes 33 are provided so as to be located near each pipe 11 of the upper ejection body 10. Other parts of the ejection pipes 33 are provided so as to be located below the conveying section 5 in the heating chamber 3, and some of the openings 33a of these ejection pipes 33 are provided so as to be located near each pipe 11 of the lower ejection body 10. The form of the intake section 4 is not limited to the above-mentioned form.

[0027] The hydrogen oven 1 is also provided with, for example, an exhaust section 6. The exhaust section 6 is a mechanism for discharging the gas in the heating chamber 3 to the outside of the heating chamber 3. For example, as shown in FIG. 1, the exhaust section 6 has an exhaust cover 25 that covers the body cover 20 from above with a gap therebetween, and also has an exhaust pipe 26. A space is formed between the exhaust cover 25 and the body cover 20, and this space forms an exhaust path 25a. For example, as shown in FIG. 1, the exhaust cover 25 extends to the inlet 21 and the outlet 22 of the body cover 20, or to the vicinity of the inlet 21 and the outlet 22 of the body cover 20, and the exhaust path 25a is connected to the heating chamber 3 via the inlet 21 and the outlet 22, respectively. As shown in FIG. 1, the exhaust pipe 26 is connected to a part of the exhaust cover 25 and communicates with the exhaust path 25a, and is configured to discharge the gas in the exhaust path 25a to the outside. The exhaust unit 6 may be provided with a drive unit 27. The drive unit 27 is a mechanism for generating an airflow by circulating air, such as a rotationally driven fan. The drive unit 27 can generate an airflow in the exhaust pipe 26 toward the outside, and generate an airflow in the exhaust pipe 25a and the exhaust pipe 26 from the carry-in entrance 21 and the carry-out exit 22 toward the outside.

[0028] 2, 3, and 5, the jetting body 10 is provided with a supply pipe 15 for supplying hydrogen gas from the hydrogen tank 7 to the jetting body 10. FIG. 5 is a schematic diagram showing the configuration of the hydrogen oven 1. The supply pipe 15 is connected to an end of the buffer pipe 14 as shown in FIG. 3, for example, and communicates with the space inside the buffer pipe 14. The supply pipe 15 may be connected to another part of the buffer pipe 14. The jetting body 10 may not have the buffer pipe 14, and the pipe 11 may be directly connected to the supply pipe 15. In this case, the space 12 of the pipe 11 communicates with the space inside the supply pipe 15 at one end, for example.

[0029] 5, the hydrogen oven 1 includes a flow rate adjuster 16 capable of adjusting the flow rate of hydrogen gas supplied to the jetting body 10. The flow rate adjuster 16 is capable of adjusting the pressure of hydrogen gas supplied to the jetting body 10, and is provided in the supply pipe 15 as shown in FIG. 5. Specifically, the flow rate adjuster 16 is, for example, a pressure regulating valve, and can adjust the pressure of hydrogen gas flowing in the supply pipe 15 to adjust the pressure of hydrogen gas supplied to the jetting body 10. In other words, the flow rate adjuster 16 can adjust the pressure of hydrogen gas in the space 12 of the pipe 11. Therefore, the flow rate adjuster 16 can adjust the jetting speed of hydrogen gas coming out of the open hole 13 of the pipe 11.

[0030] The hydrogen oven 1 has the above-mentioned configuration and heats and cooks the food M transported by the transport section 5. The operation of the hydrogen oven 1 will be specifically described below.

[0031] When the food material M is placed in the conveying section 5, the food material M is conveyed by the conveying section 5. The food material M enters the heating chamber 3 through the carry-in entrance 21, is conveyed within the heating chamber 3, and passes between the upper and lower ejection bodies 10 of the hydrogen burner 2.

[0032] On the other hand, when hydrogen gas is supplied from the hydrogen tank 7 through the supply pipe 15, the hydrogen gas is supplied to the ejection body 10. When the valve 11c of each pipe 11 is open, the hydrogen gas supplied to the ejection body 10 is supplied to each pipe 11 through the buffer pipe 14. In the supply pipe 15, the pressure of the hydrogen gas supplied to the ejection body 10 is adjusted by the flow rate adjuster 16, and the hydrogen gas is stored in the buffer pipe 14 at a constant or approximately constant pressure. Therefore, the pressure of the hydrogen gas in the space 12 of the pipe 11 is a desired pressure. The hydrogen gas supplied to the pipe 11 of the ejection body 10 goes out of the pipe 11 through the open hole 13 of the pipe 11. The hydrogen gas coming out of the open hole 13 mixes with air and is ignited by an ignition device or the like to burn. In this way, the hydrogen gas burns around the opening hole 13 of the pipe 11 to form a flame. The hydrogen gas supplied from the hydrogen tank 7 to the ejection body 10 via the supply pipe 15 is designed not to be mixed with other gases such as air. The hydrogen tank 7 may store pure hydrogen gas, or may store mixed hydrogen gas in which other gases such as air are mixed with hydrogen gas.

[0033] The intake section 4 ejects air from the openings 33a of the ejection pipes 33 of the pipe section 31 toward each pipe 11 of the upper and lower ejection bodies 10 or toward the vicinity of each pipe 11. As a result, air is supplied from the intake section 4 to the flame of hydrogen gas formed around the opening hole 13 of each pipe 11 of the hydrogen burner 2. As a result, the air supplied from the intake section 4 is heated by the flame formed by the combustion of the hydrogen gas, and superheated steam is generated. The flame generated by the combustion of the hydrogen gas is as high as about 2000°, and can efficiently turn the air supplied from the intake section 4 into superheated steam. In addition, water vapor is generated by the combustion of the hydrogen gas, and this water vapor is also heated by the flame generated by the combustion of the hydrogen gas, and superheated steam is generated.

[0034] Within the heating chamber 3, food material M transported by the transport unit 5 moves between the upper and lower ejection bodies 10 of the hydrogen burner 2. During this process, superheated steam generated by the flame of hydrogen gas condenses into water droplets on the surface of the food material M and in its vicinity, and the food material M is cooked by the latent heat of condensation generated thereby. In addition, the humidity in the vicinity of the food material M is maintained at a high humidity, which reduces the heating caused by the latent heat of condensation and allows the inside of the food to be cooked without the surface of the food material M being overheated.

[0035] In addition, when the food M transported by the transport unit 5 moves between the upper and lower ejection bodies 10 of the hydrogen burner 2 in the heating chamber 3, the food M is also cooked by the flames generated by the combustion of the hydrogen gas. This allows the surface of the food M to be browned.

[0036] Gases such as water vapor in the heating chamber 3 are discharged to the outside through the inlet 21 and the outlet 22 by the exhaust section 6. Theoretically, the only gas generated during cooking with the hydrogen oven 1 is water vapor, and no or almost no carbon dioxide is emitted.

[0037] In this way, the hydrogen oven 1 does not require a boiler to generate superheated steam, and does not require any other heating mechanism such as the hydrogen burner 2 to brown the surface of the food M. In addition, by burning hydrogen gas, superheated steam can be generated efficiently, and efficient cooking can be provided.

[0038] As described above, the hydrogen oven 1 according to the first embodiment of the present invention allows a cooking device that uses superheated steam to have a simple configuration.

[0039] Next, a hydrogen oven 8 as a cooking device according to a second embodiment of the present invention will be described. Hereinafter, in the hydrogen oven 8, components that are the same as or have similar functions as the above-mentioned hydrogen oven 1 will be given the same reference numerals and their description will be omitted. Figure 6 is a diagram showing the schematic configuration of the hydrogen oven 8 according to the second embodiment of the present invention.

[0040] 7, hydrogen oven 8 has two regions in heating chamber 3, which has superheated steam region R1 and flame region R2. Hydrogen burner 2 is disposed in flame region R2. In hydrogen oven 8, air supplied from intake section 4 to heating chamber 3 flows from flame region R2 toward superheated steam region R1.

[0041] 6, in the heating chamber 3, the superheated steam region R1 and the flame region R2 are aligned in the transport direction of the food material M by the transport unit 5, with the superheated steam region R1 extending toward the inlet 21 side of the body cover 20 and the flame region R2 extending toward the outlet 22 side of the body cover 20. In other words, the transport unit 5 transports the food material M from the superheated steam region R1 toward the flame region R2 within the heating chamber 3.

[0042] The hydrogen oven 8 also includes a blower 9 provided in the heating chamber 3. The blower 9 generates an air current in the heating chamber 3 that flows from the flame region R2 toward the superheated steam region R1. The blower 9 has, for example, one or more fans 9a and 9b. The fans 9a and 9b are operable by being supplied with power. As shown in FIG. 6, the fan 9a is disposed above the conveying section 5 in the heating chamber 3, and the fan 9b is disposed below the conveying section 5 in the heating chamber 3. The fans 9a and 9b are disposed, for example, between the superheated steam region R1 and the flame region R2. Specifically, for example, the upper fan 9a is disposed in the vicinity of the pipe 11 closest to the inlet 21 of the upper ejection body 10 of the hydrogen burner 2, and the lower fan 9b is disposed in the vicinity of the pipe 11 closest to the inlet 21 of the lower ejection body 10 of the hydrogen burner 2. The fans 9a and 9b may be provided in the superheated steam region R1 or in the flame region R2. The fans 9a and 9b may be provided in both the superheated steam region R1 and the flame region R2.

[0043] As shown in FIG. 6, the blower 9 has airflow guides 9c and 9d in the superheated steam region R1 of the heating chamber 3. The airflow guides 9c and 9d are members that change the direction of the airflow sent from the fans 9a and 9b, and change the direction of the airflow from the fans 9a and 9b to face the conveying section 5. The airflow guides 9c and 9d are, for example, curved plate-shaped members. As shown in FIG. 6, for example, the blower 9 has a plurality of airflow guides 9c and 9d, and the plurality of airflow guides 9c and 9d are arranged side by side. The airflow guide 9c corresponds to the fan 9a and is provided on the upper side of the conveying section 5, and changes the direction of the airflow sent from the fan 9a to a direction toward the lower side. The airflow guide 9d corresponds to the fan 9b and is provided on the lower side of the conveying section 5, and changes the direction of the airflow sent from the fan 9b to a direction toward the upper side.

[0044] Hydrogen oven 8 has the above-mentioned configuration, and heats and cooks food M transported by transport section 5. The operation of hydrogen oven 8 will be specifically described below.

[0045] When food material M is placed in the conveying section 5, the food material M is conveyed by the conveying section 5. The food material M passes through the carry-in entrance 21 and enters the heating chamber 3, is conveyed inside the heating chamber 3, passes through the superheated steam region R1, and then passes through the flame region R2. In the flame region R2, the food material M passes between the upper and lower ejection bodies 10 of the hydrogen burner 2.

[0046] On the other hand, when hydrogen gas is supplied from the hydrogen tank 7 through the supply pipe 15, the hydrogen gas is supplied to the ejecting body 10, similar to the case of the hydrogen oven 1. The hydrogen gas supplied to the pipe 11 of the ejecting body 10 exits the pipe 11 through the open hole 13 of the pipe 11, mixes with the air, and is ignited by an ignition device or the like to burn, similar to the case of the hydrogen oven 1. Thus, in the flame region R2, the hydrogen gas burns around the open hole 13 of the pipe 11 to form a flame.

[0047] The intake section 4 ejects air from the openings 33a of the ejection pipes 33 of the pipe section 31 toward each pipe 11 of the upper and lower ejection bodies 10 or toward the vicinity of each pipe 11. As a result, air is supplied from the intake section 4 to the flame of hydrogen gas formed around the opening hole 13 of each pipe 11 of the hydrogen burner 2. As a result, in the flame region R2, the air supplied from the intake section 4 is heated by the flame formed by burning the hydrogen gas, and superheated steam V is generated. The flame generated by burning the hydrogen gas is as high as about 2000°, and can efficiently turn the air supplied from the intake section 4 into superheated steam. In addition, water vapor is generated by burning the hydrogen gas, and this water vapor is also heated by the flame generated by burning the hydrogen gas, and superheated steam V is generated. In this manner, in the flame region R2, as in the case of the hydrogen oven 1, the hydrogen gas ejected from the opening holes 13 of each pipe 11 serves as fuel to generate a hydrogen gas flame, which in turn heats the air or water vapor to generate superheated steam V.

[0048] The superheated steam V generated in the flame region R2 is sent to the superheated steam region R1 by the fans 9a and 9b of the blower 9. In the superheated steam region R1, the superheated steam V sent from the fans 9a and 9b is redirected by the airflow guides 9c and 9d and flows toward the transfer section 5.

[0049] Thus, in the hydrogen oven 8, a portion of the superheated steam V generated by heating the hydrogen gas flame of the hydrogen burner 2 in the flame region R2 is sent from the flame region R2 to the superheated steam region R1 by the blower 9, and in the superheated steam region R1, reaches the transport section 5. That is, in the hydrogen oven 8, the blower 9 forms a flow of superheated steam V that flows from the flame region R2 toward the transport section 5 of the superheated steam region R1. In addition, this flow of superheated steam V is formed above and below the transport section 5.

[0050] In this way, the superheated steam V that has reached the conveying section 5 of the superheated steam region R1 and its vicinity cooks the food material M being conveyed to the conveying section 5 in the superheated steam region R1. That is, the food material M conveyed into the heating chamber 3 from the carry-in entrance 21 is first cooked by the superheated steam V in the superheated steam region R1.

[0051] Next, the food M cooked by the superheated steam V is transported from the superheated steam region R1 to the flame region R2 by the transport unit 5. In the flame region R2, the food M moves between the upper and lower ejection bodies 10 of the hydrogen burner 2, and is cooked in the same manner as in the hydrogen oven 1. That is, the food M is cooked by the superheated steam generated by the flame of hydrogen gas emitted from the ejection body 10. The food M is also cooked by the flame of hydrogen gas. This allows the surface of the food M to be browned.

[0052] Gases such as water vapor in the heating chamber 3 are discharged to the outside through the inlet 21 and outlet 22 by the exhaust section 6, just like in the case of the hydrogen oven 1. Theoretically, the only gas generated during cooking with the hydrogen oven 8 is water vapor, and no or almost no carbon dioxide is emitted.

[0053] In this way, the hydrogen oven 8 does not require a boiler to generate superheated steam, and does not require any heating mechanism other than the hydrogen burner 2 to brown the surface of the food M. Also, by burning hydrogen gas, superheated steam can be generated efficiently, providing efficient cooking. Also, two-stage cooking can be performed in the superheated steam region R1 and the flame region R2, expanding the range of cooking methods.

[0054] As described above, the hydrogen oven 8 according to the second embodiment of the present invention allows a cooking device that uses superheated steam to have a simple configuration.

[0055] In the hydrogen oven 8, the superheated steam region R1 and the flame region R2 are arranged in the order of the superheated steam region R1 and the flame region R2 in the conveying direction of the food material M of the conveying unit 5, but the superheated steam region R1 and the flame region R2 may be arranged in the order of the flame region R2 and the superheated steam region R1 in the conveying direction of the food material M of the conveying unit 5. The hydrogen oven 8 may have a plurality of superheated steam regions R1, and may also have a plurality of flame regions R2. For example, the hydrogen oven 8 may have one flame region R2 between two superheated steam regions R1. In this case, the blower unit 9 is configured to generate a flow of superheated steam V from the flame region R2 toward the conveying unit 5 in both superheated steam regions R1, for example. The arrangement of the superheated steam zone R1 and the flame zone R2, the number of superheated steam zones R1 and flame zones R2, and the combination of the superheated steam zones R1 and flame zones R2 can be set in various forms depending on, for example, the type of food ingredient M and the cooking method.

[0056] Although the present invention has been described above through the above embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments. It is clear to those skilled in the art that various modifications or improvements can be made to the above embodiments. It is clear from the claims that such modifications or improvements can also be included in the technical scope of the present invention.

[0057] The above-described embodiments are intended to facilitate understanding of the present invention, and are not intended to limit the present invention. Moreover, the above-described embodiments do not limit the use of the present invention, and the present invention may include anything as its use. The components of the above-described embodiments, as well as their arrangement, materials, conditions, shapes, sizes, etc., are not limited to those exemplified, and can be changed as appropriate. For example, the present invention includes differences that occur in the implementation of manufacturing tolerances, etc. Furthermore, the components shown in different embodiments can be partially replaced or combined with each other within a range that is not technically contradictory. Furthermore, each configuration can be appropriately and selectively combined so as to achieve at least a part of the above-described problems and effects. [Explanation of symbols]

[0058] 1 hydrogen oven, 2 hydrogen burner, 3 heating chamber, 4 intake section, 5 conveying section, 6 exhaust section, 7 hydrogen tank, 9 blower section, 9a, 9b fan, 9c, 9d air flow guide, 10 ejection body, 11 pipe, 11a, 11b end, 11c valve, 12 space, 13 release hole, 14 buffer pipe, 15 supply pipe, 16 flow rate adjustment body, 20 main body cover, 21 inlet, 22 outlet, 25 exhaust cover, 25a exhaust path, 26 exhaust pipe, 27 drive section, 30 drive section, 31 pipe section, 32 supply pipe, 33 ejection pipe, 33a opening, M food material, R1 superheated steam area, R2 flame area, V superheated steam

Claims

1. A hydrogen burner that burns hydrogen gas; A heating chamber in which ingredients are cooked; an intake section capable of supplying air to the heating chamber, The hydrogen burner is disposed within the heating chamber. Heating cooking device.

2. The intake section is capable of supplying air toward the hydrogen gas being combusted. The cooking device according to claim 2 .

3. The heating chamber has a superheated steam region and a flame region, The hydrogen burner is disposed in the flame region, The air supplied from the intake section to the heating chamber flows from the flame region toward the superheated steam region. The cooking device according to claim 1 .

4. Further comprising a blower provided in the heating chamber, The air blower is configured to generate an airflow in the heating chamber, the airflow flowing from the flame region toward the superheated steam region. The cooking device according to claim 3.

5. Further comprising a conveying unit capable of conveying ingredients, The conveying section passes through the heating chamber. The cooking device according to claim 1 or 3.

6. The conveying unit conveys food material from the superheated steam region toward the flame region in the heating chamber. The cooking device according to claim 5 dependent on claim 3.

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