Heating and conditioning device

Abstract

To provide a simple cooking device that uses superheated steam. [Solution] The hydrogen oven 1, as a heating cooking device according to the present invention, comprises a hydrogen burner 2 for burning hydrogen gas, a heating chamber 3 which is a space for cooking food ingredients M, and an air intake 4 which can supply air to the heating chamber 3. The hydrogen burner 2 is located inside the heating chamber 3.

Description

Technical Field

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

Background Art

[0002] Conventionally, a cooking device that cooks food using superheated steam has been known (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Such a conventional cooking device using superheated steam includes a boiler for generating superheated steam. In addition, depending on the cooking method and food ingredients, another cooking mechanism for heating the surface of the food using electricity, gas, or the like may be required to give a grilled appearance to the surface of the food cooked with superheated steam. Thus, a cooking device using superheated steam requires other components such as a boiler and another cooking mechanism, and has a complicated structure.

[0005] Therefore, an object of the present invention is to provide a cooking device using superheated steam with a simple structure.

Means for Solving the Problems

[0006] To achieve the above object, a cooking device according to the present invention includes a hydrogen burner that burns hydrogen gas, a heating chamber that is a space for cooking food, and an intake section that can supply air to the heating chamber, and the hydrogen burner is disposed inside the heating chamber.

[0007] In a hydrogen heating cooking apparatus according to one aspect of the present invention, the intake section is capable of supplying air to the hydrogen gas being burned.

[0008] In a hydrogen heating cooking apparatus according to one aspect 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 the air supplied from the intake to the heating chamber flows from the flame region toward the superheated steam region.

[0009] A hydrogen heating cooking apparatus according to one aspect of the present invention further comprises a blower unit provided in the heating chamber, wherein the blower unit generates an airflow in the heating chamber that flows from the flame region toward the superheated steam region.

[0010] A hydrogen heating cooking apparatus according to one aspect of the present invention further comprises a conveying unit capable of transporting food ingredients, the conveying unit passing through the heating chamber.

[0011] In a hydrogen heating cooking apparatus according to one aspect of the present invention, the conveying unit conveys food ingredients from the superheated steam region toward the flame region within the heating chamber. [Effects of the Invention]

[0012] According to the present invention, a cooking device using superheated steam can be made with a simple configuration. [Brief explanation of the drawing]

[0013] [Figure 1] This is a schematic diagram showing the general configuration of a hydrogen oven as a heating and cooking device according to the first embodiment of the present invention. [Figure 2] Figure 1 is a schematic diagram showing the internal structure of the hydrogen oven. [Figure 3] This is a schematic perspective view showing the configuration of the hydrogen burner nozzle in a hydrogen oven. [Figure 4] Figure 3 is a cross-sectional perspective view of the pipeline of the ejector shown. [Figure 5]This is a schematic diagram illustrating the general configuration of a hydrogen oven. [Figure 6] This figure shows a schematic configuration of a hydrogen oven according to a second embodiment of the present invention. [Modes for carrying out the invention]

[0014] Embodiments of the present invention will be described below with reference to the drawings. Note that not all of the multiple components in the drawings are assigned reference numerals, and some of the reference numerals for the multiple components are omitted.

[0015] Figure 1 is a schematic diagram showing the configuration of a hydrogen oven 1 as a heating and cooking device according to the first embodiment of the present invention, and Figure 2 is a schematic diagram showing the internal structure of the hydrogen oven 1. As shown in Figures 1 and 2, the hydrogen oven 1 comprises a hydrogen burner 2 for burning hydrogen gas, a heating chamber 3 which is a space for cooking food ingredients M, and an air intake 4 which can supply air to the heating chamber 3. The hydrogen burner 2 is located inside the heating chamber 3. The configuration of the hydrogen oven 1 will be described in detail below.

[0016] As shown in Figures 1 and 2, the hydrogen oven 1 has, for example, a main body cover 20 which is a member that covers the heating chamber 3. The main body cover 20 forms a space that is closed or approximately closed to the outside and defines the heating chamber 3. The main body cover 20 has, for example, an entrance 21 and an exit 22 which are openings through which the transport section 5, described later, passes. The entrance 21 and the exit 22 may be fitted with lids that allow them 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 the food M, for example. The conveying unit 5 is configured to pass through the heating chamber 3 and can convey the food M, for example, in the horizontal direction or substantially horizontal direction. The conveying unit 5 is, for example, a belt conveyor. Specifically, as shown in FIG. 1, for example, an endless metal belt 5c is wound around a pair of sprockets 5a and 5b to form the conveying unit 5. Also, for example, one or both of the pair of sprockets 5a and 5b are configured to be rotationally driven. The conveying unit 5 passes through the inlet 21 and outlet 22 of the main body cover 20 and penetrates the main body cover 20. The conveying unit � is, for example, composed of a plurality of connected belt conveyors.

[0018] As described above, the hydrogen burner 2 is disposed in the heating chamber 3. The hydrogen burner 2 is configured to sandwich the conveying unit 5 from above and below in the heating chamber 3, for example. As shown in FIGS. 1 and 2, for example, the hydrogen burner 2 has a pair of ejection bodies 10. One ejection body 10 is provided above the conveying unit 5, and the other ejection body 10 is provided below the conveying unit 5. Also, as shown in FIGS. 1 and 2, for example, the pair of ejection bodies 10 are opposed to each other in the vertical direction via the conveying unit 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 FIGS. 1, 2, and 3, the ejection body 10 has a plurality of pipelines 11. As shown in FIG. 4, the pipeline 11 has a space 12 capable of supplying gas and a plurality of open holes 13 which are holes opening the space 12 to the outside. The open holes 13 are configured such that the speed at which the gas supplied to the pipeline 11 exits through the open holes 13 is greater than the combustion speed of the hydrogen gas, for example. FIG. 3 is a perspective view schematically showing the configuration of the ejection body 10, and FIG. 4 is a cross-sectional perspective view of the pipeline 11 of the ejection body 10.

[0020] As shown in FIG. 3, the ejector 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 extending direction, and is configured to be able to guide gas along the extending direction of the buffer pipe 14. Further, the buffer pipe 14 is formed in a form that temporarily stores the gas supplied to the space and makes the pressure of the gas in the space constant or substantially constant. As shown in FIG. 3, a plurality of pipes 11 are provided in the buffer pipe 14 so as to project in a direction intersecting the buffer pipe 14. One end 11a of the pipe 11 is connected to the buffer pipe 14, and the other end 11b of the pipe 11 is closed. Also, the space 12 of the pipe 11 communicates with the space inside the buffer pipe 14 at the end 11a.

[0021] The buffer pipe 14 is formed in a cylindrical shape, for example, as shown in FIG. 3, and the pipes 11 are provided so as to project from the side surface of the buffer pipe 14. The space inside the buffer pipe 14 is closed except for the portions communicating with the pipes 11 and a supply pipe 15 described later. Further, 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 quadrilateral.

[0022] The conduit 11 extends along a straight line, as shown in Figure 3, for example. The end 11a of the conduit 11 is connected to the buffer conduit 14, as shown in Figure 3, for example, and the conduit 11 communicates with the space within the buffer conduit 14. Also, as shown in Figure 3, the end 11b of the conduit 11 is closed. Also, as shown in Figure 3, for example, multiple conduits 11 are arranged in parallel. Specifically, the multiple conduits 11 are arranged parallel or nearly parallel to each other at equal or approximately equal intervals. Note that the conduit 11 is not limited to extending along a straight line. For example, the conduit 11 may extend along a curve, or along a line that combines a curve and a straight line, and may extend in various shapes. Also, the multiple conduits 11 do not have to be provided in parallel as described above, and may be in other orientations or arrangements. Also, the cross-sectional shape of the conduit 11 does not have to be circular, as shown in Figure 4. For example, the cross-sectional shape of the pipeline 11 may be a polygon such as a triangle or a quadrilateral.

[0023] As shown in Figures 1 and 2, the upper ejector 10 has multiple conduits 11 arranged in the heating chamber 3 with the openings 13 facing downwards and parallel or approximately parallel to the conveying section 5. Similarly, the lower ejector 10 has multiple conduits 11 arranged in the heating chamber 3 with the openings 13 facing upwards and parallel or approximately parallel to the conveying section 5. Also, as shown in Figure 2, the conduits 11 of each ejector 10 extend into the heating chamber 3 by penetrating a part of the main body cover 20. In other words, a part of the conduit 11 extends into the heating chamber 3, the other part of the conduit 11 is not inside the heating chamber 3, and a part of the conduit 11 extends outside the main body cover 20. The buffer conduit 14 is also located outside the main body cover 20.

[0024] Each conduit 11 is provided with a valve 11c, for example as shown in Figure 3, to close the space 12 within the conduit 11 and prevent gas from being supplied to the opening 13. The valve 11c has, for example, a manual cock, and the space 12 within the conduit 11 can be opened or closed by manually operating the cock. The valve 11c may also be controlled by a drive device (not shown) to open or close the space 12 within the conduit 11. The valve 11c is provided between the buffer conduit 14 and the opening 13 closest to the buffer conduit 14, for example as shown in Figure 3, and can partially close the space 12 of the conduit 11. The valve 11c is also provided in the conduit 11 so as to be located outside the main 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 to, for example, the hydrogen gas to be burned. The intake section 4 has, for example, a drive unit 30 and a piping section 31, as shown in Figure 1. The drive unit 30 is a mechanism that generates airflow by flowing air from a rotating fan or the like. The piping section 31 is a conduit that guides the airflow generated by the drive unit 30 to the heating chamber 3, and has, for example, a supply conduit 32 and a plurality of discharge conduits 33. The plurality of discharge conduits 33 branch off from the supply conduit 32, penetrate a part of the main body cover 20, and open to the heating chamber 3. The drive unit 30 is provided in the supply conduit 32. In this way, the piping section 31 is in communication with the heating chamber 3 via each discharge conduit 33, and the airflow generated by the drive unit 30 is guided to the heating chamber 3 through the piping section 31.

[0026] Furthermore, the openings 33a of the discharge pipes 33 are positioned so that air is supplied to the pipes 11 of the ejector bodies 10 of the hydrogen burner 2. For example, as shown in Figure 1, the openings 33a of each discharge pipe 33 are located near each pipe 11 of the ejector bodies 10 of the hydrogen burner 2. Specifically, for example, as shown in Figure 1, some of the multiple discharge pipes 33 are located above the transport section 5 in the heating chamber 3, and the openings 33a of these multiple discharge pipes 33 are located near each pipe 11 of the upper ejector bodies 10. Other parts of the multiple discharge pipes 33 are located below the transport section 5 in the heating chamber 3, and the openings 33a of these other parts of the multiple discharge pipes 33 are located near each pipe 11 of the lower ejector bodies 10. Note that the form of the intake section 4 is not limited to the form described above.

[0027] Furthermore, the hydrogen oven 1 is provided with, for example, an exhaust section 6. The exhaust section 6 is a mechanism for discharging the gas inside the heating chamber 3 to the outside of the heating chamber 3. For example, as shown in Figure 1, the exhaust section 6 has an exhaust cover 25 that covers the main body cover 20 from above with a gap, and also has an exhaust pipe 26. A space is formed between the exhaust cover 25 and the main body cover 20, and this space forms the exhaust passage 25a. The exhaust cover 25 extends to the inlet 21 and outlet 22 of the main body cover 20, or to the vicinity of the inlet 21 and outlet 22 of the main body cover 20, as shown in Figure 1, and the exhaust passage 25a is connected to the heating chamber 3 via the inlet 21 and outlet 22, respectively. As shown in Figure 1, the exhaust pipe 26 is connected to a part of the exhaust cover 25 and communicates with the exhaust passage 25a, and is designed to discharge the gas inside the exhaust passage 25a to the outside. The exhaust section 6 may be provided with a drive unit 27. The drive unit 27 is a mechanism that generates airflow by flowing air from a fan or the like that is driven to rotate. The drive unit 27 can generate an airflow directed outwards within the exhaust pipe 26 and generate an airflow directed outwards from the inlet 21 and outlet 22 sides in the exhaust passage 25a and the exhaust pipe 26.

[0028] Furthermore, as shown in Figures 2, 3, and 5, the ejector 10 is provided with a supply pipeline 15 for supplying hydrogen gas from the hydrogen tank 7 to the ejector 10. Figure 5 is a schematic diagram illustrating the configuration of the hydrogen oven 1. The supply pipeline 15 is connected to the end of the buffer pipeline 14 and communicates with the space within the buffer pipeline 14, for example, as shown in Figure 3. The supply pipeline 15 may also be connected to other parts of the buffer pipeline 14. The ejector 10 does not necessarily have a buffer pipeline 14, and the pipeline 11 may be directly connected to the supply pipeline 15. In this case, the space 12 of the pipeline 11 communicates with the space within the supply pipeline 15 at one end, for example.

[0029] Furthermore, as shown in Figure 5, the hydrogen oven 1 is equipped with a flow rate regulator 16 that can adjust the flow rate of the hydrogen gas supplied to the ejector 10. The flow rate regulator 16 can adjust the pressure of the hydrogen gas supplied to the ejector 10 and is installed in the supply pipeline 15, as shown in Figure 5. Specifically, the flow rate regulator 16 is, for example, a pressure regulating valve, and can adjust the pressure of the hydrogen gas flowing in the supply pipeline 15 to adjust the pressure of the hydrogen gas supplied to the ejector 10. In other words, the flow rate regulator 16 can adjust the pressure of the hydrogen gas in the space 12 of the pipeline 11. Therefore, the flow rate regulator 16 can adjust the ejection velocity of the hydrogen gas coming out of the open hole 13 of the pipeline 11.

[0030] The hydrogen oven 1 has the configuration described above and heats and cooks the food ingredients M that are transported by the transport unit 5. The operation of the hydrogen oven 1 will be explained in detail below.

[0031] When the food ingredients M are placed in the conveying unit 5, the food ingredients M are conveyed by the conveying unit 5. The food ingredients M pass through the entrance 21 and enter the heating chamber 3, where they are conveyed and pass between the upper and lower nozzles 10 of the hydrogen burner 2.

[0032] Meanwhile, when hydrogen gas is supplied from the hydrogen tank 7 via the supply pipeline 15, it is supplied to the ejector 10. With the valves 11c of each pipeline 11 open, the hydrogen gas supplied to the ejector 10 is supplied to each pipeline 11 via the buffer pipeline 14. In the supply pipeline 15, the pressure of the hydrogen gas supplied to the ejector 10 is adjusted by the flow velocity adjuster 16, and the hydrogen gas is stored in the buffer pipeline 14 at a constant or approximately constant pressure. As a result, the pressure of the hydrogen gas in the space 12 of the pipeline 11 is at the desired pressure. The hydrogen gas supplied to the pipeline 11 of the ejector 10 exits the pipeline 11 through the opening 13 of the pipeline 11. The hydrogen gas exiting from the opening 13 mixes with air and is ignited and combusted by an ignition device or the like. In this way, a flame is formed around the opening 13 of the pipeline 11 as the hydrogen gas burns. Furthermore, the hydrogen gas supplied from the hydrogen tank 7 to the nozzle 10 via the supply pipeline 15 is designed not to be mixed with other gases such as air. The hydrogen tank 7 may store pure hydrogen gas, or it may store mixed hydrogen gas in which other gases such as air are mixed with the hydrogen gas.

[0033] The intake section 4 ejects air from the openings 33a of the multiple discharge lines 33 through the supply line 32 and multiple discharge lines 33 of the pipeline section 31 toward each pipeline 11 of the upper and lower discharge bodies 10 or the vicinity of each pipeline 11. As a result, air is supplied from the intake section 4 to the hydrogen gas flame formed around the opening holes 13 of each pipeline 11 of the hydrogen burner 2. The air supplied from the intake section 4 is heated by the flame formed by the combustion of hydrogen gas, generating superheated steam. The flame generated by the combustion of hydrogen gas is at a high temperature of approximately 2000°, which can efficiently convert the air supplied from the intake section 4 into superheated steam. In addition, water vapor is generated by the combustion of hydrogen gas, and this water vapor is also heated by the flame generated by the combustion of hydrogen gas, generating superheated steam.

[0034] Within the heating chamber 3, the food ingredients M, transported by the transport unit 5, move between the upper and lower nozzles 10 of the hydrogen burner 2. During this process, the superheated steam generated by the hydrogen gas flame condenses into water droplets on and near the surface of the food ingredients M, and the food ingredients M are cooked by the latent heat of condensation generated by this condensation. Furthermore, the humidity near the food ingredients M is maintained at a high humidity, which mitigates the heating caused by the latent heat of condensation, ensuring that the inside of the food is cooked without the surface of the food ingredients M being overheated.

[0035] Furthermore, within the heating chamber 3, as the food ingredients M transported by the transport unit 5 move between the upper and lower nozzles 10 of the hydrogen burner 2, the food ingredients M are also heated and cooked by the flame generated by the combustion of hydrogen gas. This allows the surface of the food ingredients M to be browned.

[0036] Furthermore, gases such as water vapor in the heating chamber 3 are expelled to the outside through the inlet 21 and outlet 22 by the exhaust unit 6. Theoretically, the only gas produced during heating and cooking with the hydrogen oven 1 is water vapor, and carbon dioxide is not emitted, or hardly any carbon dioxide is emitted.

[0037] Thus, the hydrogen oven 1 does not require a boiler to generate superheated steam, nor does it require any other heating mechanism from the hydrogen burner 2 to brown the surface of the food M. Furthermore, by burning hydrogen gas, superheated steam can be efficiently generated, providing efficient cooking.

[0038] As described above, according to the hydrogen oven 1 of the first embodiment of the present invention, a heating and cooking device using superheated steam can be made into a simple configuration.

[0039] Next, a hydrogen oven 8 as a heating and cooking device according to the second embodiment of the present invention will be described.Hereafter, for the hydrogen oven 8, components that have the same configuration or similar functions as those of the hydrogen oven 1 described above will be denoted by the same reference numerals and their descriptions 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] As shown in Figure 7, the hydrogen oven 8 has two regions in the heating chamber 3, which consists of a superheated steam region R1 and a flame region R2. A hydrogen burner 2 is located in the flame region R2. In the hydrogen oven 8, the air supplied from the intake 4 to the heating chamber 3 flows from the flame region R2 towards the superheated steam region R1.

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

[0042] Furthermore, the hydrogen oven 8 is equipped with a blower unit 9 located in the heating chamber 3. The blower unit 9 generates an airflow in the heating chamber 3 that flows from the flame region R2 toward the superheated steam region R1. The blower unit 9 has, for example, one or more fans 9a, 9b. Fans 9a, 9b are powered and drivable. As shown in Figure 6, fan 9a is located above the conveying unit 5 in the heating chamber 3, and fan 9b is located below the conveying unit 5 in the heating chamber 3. Fans 9a, 9b are also located, for example, between the superheated steam region R1 and the flame region R2. Specifically, for example, the upper fan 9a is located near the pipe 11 closest to the inlet 21 of the upper ejector body 10 of the hydrogen burner 2, and the lower fan 9b is located near the pipe 11 closest to the inlet 21 of the lower ejector body 10 of the hydrogen burner 2. Fans 9a and 9b may be provided in the superheated steam region R1 or in the flame region R2. Alternatively, fans 9a and 9b may be provided in both the superheated steam region R1 and the flame region R2.

[0043] As shown in Figure 6, the blower unit 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 components that change the direction of the airflow sent from the fans 9a and 9b, changing the direction of the airflow from the fans 9a and 9b toward the conveying unit 5. The airflow guides 9c and 9d are, for example, curved plate-shaped components. As shown in Figure 6, for example, the blower unit 9 has multiple airflow guides 9c and 9d, and the multiple 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 unit 5, and changes the direction of the airflow sent from the fan 9a toward a downward direction. The airflow guide 9d corresponds to the fan 9b and is provided on the lower side of the conveying unit 5, and changes the direction of the airflow sent from the fan 9b toward an upward direction.

[0044] The hydrogen oven 8 has the configuration described above and heats and cooks the food ingredients M that are transported by the transport unit 5. The operation of the hydrogen oven 8 will be explained in detail below.

[0045] When food ingredients M are placed in the conveying unit 5, the food ingredients M are conveyed by the conveying unit 5. The food ingredients M enter the heating chamber 3 through the entrance 21, are conveyed within the heating chamber 3, pass through the superheated steam region R1, and then pass through the flame region R2. In the flame region R2, the food ingredients M pass between the upper and lower nozzles 10 of the hydrogen burner 2.

[0046] On the other hand, when hydrogen gas is supplied from the hydrogen tank 7 via the supply pipeline 15, hydrogen gas is supplied to the nozzle 10, similar to the case of the hydrogen oven 1. The hydrogen gas supplied to the pipeline 11 of the nozzle 10 exits the pipeline 11 through the opening 13, mixes with air, and is ignited and combusted by an ignition device, etc., similar to the case of the hydrogen oven 1. In this way, in the flame region R2, hydrogen gas burns around the opening 13 of the pipeline 11, forming a flame.

[0047] The intake section 4 ejects air from the openings 33a of the multiple discharge lines 33 through the supply line 32 and multiple discharge lines 33 of the pipeline section 31 toward each pipeline 11 of the upper and lower discharge bodies 10 or the vicinity of each pipeline 11. As a result, air is supplied from the intake section 4 to the hydrogen gas flame formed around the openings 13 of each pipeline 11 of the hydrogen burner 2. In the flame region R2, the air supplied from the intake section 4 is heated by the flame formed by the combustion of hydrogen gas, generating superheated steam V. The flame generated by the combustion of hydrogen gas is at a high temperature of approximately 2000°, which can efficiently convert the air supplied from the intake section 4 into superheated steam. In addition, water vapor is generated by the combustion of hydrogen gas, and this water vapor is also heated by the flame generated by the combustion of hydrogen gas, generating superheated steam V. Thus, in the flame region R2, similar to the case of hydrogen oven 1, hydrogen gas ejected from the openings 13 of each conduit 11 acts as fuel, generating a hydrogen gas flame. This hydrogen gas flame heats air or steam, generating 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 unit 9. Then, 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 towards the conveying unit 5.

[0049] Thus, in the hydrogen oven 8, a portion of the superheated steam V generated by the heating of 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 air blower 9, and reaches the conveying unit 5 in the superheated steam region R1. In other words, in the hydrogen oven 8, the air blower 9 creates a flow of superheated steam V from the flame region R2 toward the conveying unit 5 in the superheated steam region R1. Furthermore, this flow of superheated steam V is formed on both the upper and lower sides of the conveying unit 5.

[0050] In this way, the superheated steam V that has reached the conveying section 5 and its vicinity in the superheated steam region R1 heats and cooks the food ingredients M being conveyed to the conveying section 5 in the superheated steam region R1. In other words, the food ingredients M that have been brought into the heating chamber 3 from the entrance 21 are first heated and cooked by the superheated steam V in the superheated steam region R1.

[0051] Next, the food ingredients M, cooked by the superheated steam V, are transported by the transport unit 5 from the superheated steam region R1 to the flame region R2. In the flame region R2, the food ingredients M move between the upper and lower nozzles 10 of the hydrogen burner 2 and are heated and cooked in the same way as in the hydrogen oven 1. In other words, the food ingredients M are heated and cooked by the superheated steam generated by the hydrogen gas flame emitted from the nozzles 10. The food ingredients M are also heated and cooked by the hydrogen gas flame. This allows the surface of the food ingredients M to be browned.

[0052] The steam and other gases in the heating chamber 3 are expelled to the outside through the inlet 21 and outlet 22 by the exhaust section 6, similar to the case of the hydrogen oven 1. Theoretically, the only gas produced during heating and cooking with the hydrogen oven 8 is steam, and carbon dioxide is not emitted, or hardly any carbon dioxide is emitted.

[0053] Thus, the hydrogen oven 8 does not require a boiler to generate superheated steam, nor does it require any other heating mechanism from the hydrogen burner 2 to brown the surface of the food M. Furthermore, by burning hydrogen gas, superheated steam can be efficiently generated, providing efficient cooking. In addition, two-stage cooking is possible in the superheated steam area R1 and the flame area R2, expanding the range of cooking methods.

[0054] As described above, according to the hydrogen oven 8 of the second embodiment of the present invention, a heating and cooking device using superheated steam can be made into 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 superheated steam region R1 followed by flame region R2 in the direction of conveying the food M in the conveying unit 5. However, the superheated steam region R1 and the flame region R2 may be arranged in the order of flame region R2 followed by superheated steam region R1 in the direction of conveying the food M in the conveying unit 5. Furthermore, the hydrogen oven 8 may have multiple superheated steam regions R1, and may also have multiple 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 9 is configured to generate a flow of superheated steam V from, for example, the flame region R2 toward the conveying unit 5 in both superheated steam regions R1. The arrangement of the superheated steam region R1 and the flame region R2, the number of each region, and the combinations of the superheated steam region R1 and flame region R2 can be set to various configurations 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 embodiments described above, the technical scope of the present invention is not limited to the scope described in the embodiments above. It will be obvious to those skilled in the art that various modifications or improvements can be made to the embodiments described above. It will be clear from the claims that such modified or improved forms may also be included in the technical scope of the present invention.

[0057] The embodiments described above are for the purpose of facilitating understanding of the present invention and are not intended to limit its interpretation. Furthermore, the embodiments described above do not limit the scope of application of the present invention, and the present invention may encompass anything as its target application. The components of the above embodiments, as well as their arrangement, materials, conditions, shapes, and sizes, are not limited to those exemplified and can be modified as appropriate. For example, the present invention includes differences that arise in the implementation of manufacturing tolerances, etc. Furthermore, components shown in different embodiments can be partially substituted or combined to the extent that they do not contradict each other in a technical sense. In addition, each configuration can be selectively combined as appropriate to achieve at least some of the problems and effects described above. [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 Airflow guide, 10 Discharge unit, 11 Pipeline, 11a, 11b End, 11c Valve, 12 Space, 13 Opening, 14 Buffer pipe, 15 Supply pipe, 16 Flow rate adjuster, 20 Main body cover, 21 Inlet, 22 Outlet, 25 Exhaust cover, 25a Exhaust passage, 26 Exhaust pipe, 27 Drive unit, 30 Drive unit, 31 Pipeline section, 32 Supply pipe, 33 Discharge pipe, 33a Opening, M Food ingredients, R1 Superheated steam area, R2 Flame area, V Superheated steam

Claims

1. A hydrogen burner that burns hydrogen gas, The heating chamber is the space where the ingredients are cooked, The heating chamber is equipped with an intake section capable of supplying air, The hydrogen burner is located in the heating chamber. Heating cooking device.

2. The intake section is capable of supplying air to the hydrogen gas to be burned. The heating and cooking apparatus according to claim 2.

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

4. The heating chamber is further provided with an air blower, The blower unit is configured to generate an airflow in the heating chamber that flows from the flame region toward the superheated steam region. The heating and cooking apparatus according to claim 3.

5. It is further equipped with a transport unit capable of transporting food ingredients. The transport unit passes through the heating chamber, A heating and cooking apparatus according to claim 1 or 3.

6. The conveying unit conveys food ingredients from the superheated steam region toward the flame region within the heating chamber. A heating cooking apparatus according to claim 5, which is dependent on claim 3.

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