Crematory and method for operating crematory

Abstract

To provide a crematory that can properly burn the entire of a cremation target while suppressing damage to remains.SOLUTION: A crematory comprises a burning chamber for burning a cremation target, a hydrogen burner provided in the burning chamber, a plurality of first air injection nozzles configured to inject air into the burning chamber, and an adjustment device configured to be adjustable of the supply amount of air to each of the plurality of first air injection nozzles for each first air injection nozzle. The plurality of first air injection nozzles are provided respectively at a plurality of positions in the axial direction of the hydrogen burner, and each of the plurality of first air injection nozzles is configured to inject air in a direction intersecting with the axial direction of the hydrogen burner toward the side of flame formed by the hydrogen burner.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to crematorium furnaces and methods of operating crematorium furnaces. [Background technology]

[0002] Patent Document 1 describes a combustion chamber (main combustion chamber) in a crematorium for burning the body to be cremated, in which the body to be cremated is burned by a main burner installed on the rear wall of the combustion chamber opposite the door. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2023-104028 Summary of the Invention [Problem to be solved by the invention]

[0004] In the crematorium described in Patent Document 1, the temperature of the combustion chamber can be controlled by adjusting the amount of fuel supplied to the main burner, but the heat load for each part of the body to be cremated cannot be flexibly adjusted. For example, when trying to properly burn parts that are more likely to leave unburned remains, the heat load for parts that are less likely to leave unburned remains may become excessively large, causing damage to the remains. For this reason, it was not easy to properly burn the entire body of the body to be cremated while minimizing damage to the remains.

[0005] In view of the above circumstances, at least one embodiment of the present disclosure aims to provide a crematorium and an operating method thereof that can properly combust the entire body of the cremated remains while minimizing damage to the remains. [Means for solving the problem]

[0006] In order to achieve the above object, a crematorium according to at least one embodiment of the present disclosure comprises: a combustion chamber for burning the cremated remains; a hydrogen burner provided in the combustion chamber; a plurality of first air injection nozzles configured to inject air into the combustion chamber; an adjusting device configured to adjust the amount of air supplied to each of the plurality of first air injection nozzles for each of the first air injection nozzles; Equipped with The plurality of first air injection nozzles are provided at a plurality of positions in the axial direction of the hydrogen burner, Each of the plurality of first air injection nozzles is configured to inject air toward the flame formed by the hydrogen burner in a direction intersecting the axial direction of the hydrogen burner. [Effects of the Invention]

[0007] According to at least one embodiment of the present disclosure, a crematorium and an operating method thereof are provided that can properly combust the entire cremated object while minimizing damage to the remains. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a schematic cross-sectional view showing the configuration of a combustion chamber 4 of a crematorium 2 according to one embodiment. [Figure 2] 2 is a schematic cross-sectional view showing an example of an AA cross section (horizontal cross section) of the combustion chamber 4 in FIG. [Figure 3] 2 is a block diagram schematically showing the relationship between a plurality of temperature sensors 9a to 9c, a control device 40, and an adjustment device 32. FIG. [Figure 4] FIG. 2 is a diagram illustrating an example of a hardware configuration of a control device 40. [Figure 5] FIG. 10 is a schematic cross-sectional view showing a modified example of the crematorium furnace 2. [Figure 6] 4 is a block diagram showing a schematic relationship between an imaging device 42, a control device 40, and an adjustment device 32. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, several embodiments of the present disclosure will be described with reference to the accompanying drawings. However, the dimensions, materials, shapes, relative arrangements, etc. of components described as embodiments or shown in the drawings are merely illustrative examples and are not intended to limit the scope of the invention. For example, expressions expressing relative or absolute arrangement such as "in a certain direction," "along a certain direction," "parallel," "orthogonal," "center," "concentric," or "coaxial" not only express such an arrangement exactly, but also express a state in which there is a relative displacement with a tolerance or an angle or distance to the extent that the same function is obtained. For example, expressions such as "identical," "equal," and "homogeneous" that indicate that something is in an equal state not only indicate a state of strict equality, but also indicate a state in which there is a tolerance or a difference to the extent that the same function is obtained. For example, expressions representing shapes such as a square shape or a cylindrical shape not only represent shapes such as a square shape or a cylindrical shape in the strict geometric sense, but also represent shapes including uneven portions, chamfered portions, etc., to the extent that the same effect can be obtained. On the other hand, the expressions "comprise," "include," "have," "includes," or "have" of one element are not exclusive expressions that exclude the presence of other elements.

[0010] Fig. 1 is a schematic cross-sectional view showing the configuration of a combustion chamber 4 of a crematorium 2 according to one embodiment. Fig. 2 is a schematic cross-sectional view showing an example of an AA cross section (horizontal cross section) of the combustion chamber 4 in Fig. 1. As shown in at least one of Figures 1 and 2, the crematorium 2 comprises a combustion chamber 4, a hydrogen burner 6, and a plurality of air injection nozzles 8.

[0011] The combustion chamber 4 includes a door 18 for carrying the cremation subject 10 into the combustion chamber 4, a rear wall 19 on the opposite side of the door 18 in the combustion chamber 4, a ceiling 20, a floor 22, and a pair of opposing side walls 24, 26. A cart 12 carrying the cremation subject 10, who is the subject of cremation, is carried into the combustion chamber 4. The cremation subject 10 includes a body 10a and a coffin 10b in which the body 10a is placed.

[0012] In this specification, the door 18 side of the combustion chamber 4 is defined as the front side of the combustion chamber 4, the side of the combustion chamber 4 opposite the door 18 (the rear wall 19 side) is defined as the rear side of the combustion chamber 4, the horizontal front-to-rear direction of the combustion chamber 4 is defined as the depth direction of the combustion chamber 4, and the direction perpendicular to the depth direction of the combustion chamber 4 is defined as the width direction of the combustion chamber 4. The side wall 24 is the wall on one side of the width direction of the combustion chamber 4 (in the illustrated example, the left side when looking toward the rear side of the combustion chamber 4 from the position of the door 18), and the side wall 26 is the wall on the other side of the width direction of the combustion chamber 4 (in the illustrated example, the right side when looking toward the rear side of the combustion chamber 4 from the position of the door 18). The cart 12 may be arranged so that the depth direction of the combustion chamber 4 and the length direction of the coffin 10b coincide with each other.

[0013] The hydrogen burner 6 is mounted on the rear wall 19 and is configured to mix fuel gas (fuel gas containing hydrogen) supplied from the fuel line 14 with air supplied from the air line 16 and burn it in the combustion chamber 4 to form a flame, which then burns the cremated subject 10. The hydrogen burner 6 forms a flame facing forward. The hydrogen burner 6 may burn high-purity hydrogen gas as the fuel gas (single-fuel combustion), or it may burn a mixture of hydrogen gas and natural gas, etc. The use of the hydrogen burner 6 achieves a higher combustion temperature than, for example, a burner that uses only natural gas as fuel, enabling the cremated subject 10 to be cremated in a shorter time. It also reduces the amount of pollutants emitted by combustion. Exhaust gas generated by the combustion of the cremated subject 10 is discharged from the outlet 23 of the combustion chamber 4 and flows into a re-combustion chamber (not shown), where harmful substances such as dioxins contained in the exhaust gas are neutralized.

[0014] Here, the λ value of the air-fuel ratio between the air supplied from the hydrogen burner 6 to the combustion chamber 4 and the fuel gas supplied from the hydrogen burner 6 to the combustion chamber 4 may be 0.2 or more and 0.5 or less, and more preferably 0.3 or more and 0.4 or less. This λ value is the value obtained by dividing the air-fuel ratio between the air supplied from the hydrogen burner 6 to the combustion chamber 4 and the fuel gas supplied from the hydrogen burner 6 to the combustion chamber 4 by the stoichiometric air-fuel ratio of the fuel supplied from the hydrogen burner 6 to the combustion chamber 4. Compared to burners that burn natural gas, the hydrogen burner 6 can achieve stable combustion even with a smaller λ value.

[0015] The multiple air injection nozzles 8 include multiple air injection nozzles 8A (four air injection nozzles 8A in the illustrated example) provided on the side wall 24 and multiple air injection nozzles 8B (four air injection nozzles 8B in the illustrated example) provided on the side wall 26. Therefore, the multiple air injection nozzles 8B are provided at different positions from the multiple air injection nozzles 8A in the circumferential direction centered on the axis C of the hydrogen burner 6 (the center line of the hydrogen burner 6). The multiple air injection nozzles 8A and the multiple air injection nozzles 8B may be arranged symmetrically with respect to a vertical plane including the axis C of the hydrogen burner 6. The flame formed by the hydrogen burner 6 extends along the axis C of the hydrogen burner 6.

[0016] Each of the multiple air injection nozzles 8A is configured to inject (inject) air into the combustion chamber 4, and each of the multiple air injection nozzles 8B is configured to inject (inject) air into the combustion chamber 4. The multiple air injection nozzles 8A are provided at multiple positions in the direction of the axis C of the hydrogen burner 6 (i.e., multiple positions in the front-to-rear direction of the combustion chamber 4). In other words, the multiple air injection nozzles 8A are arranged at intervals in the direction of the axis C of the hydrogen burner 6.

[0017] Each of the multiple air injection nozzles 8A is configured to inject air toward the flame F formed by the hydrogen burner 6 in a direction intersecting the direction of the axis C of the hydrogen burner 6 (in the illustrated example, a direction perpendicular to the direction of the axis C of the hydrogen burner 6). In the illustrated example, each of the multiple air injection nozzles 8A injects air toward the corpse 10a (toward the side wall 26).

[0018] The multiple air injection nozzles 8B are provided at multiple positions in the direction of the axis C of the hydrogen burner 6 (i.e., multiple positions in the front-to-rear direction of the combustion chamber 4). In other words, the multiple air injection nozzles 8A are arranged at intervals in the direction of the axis C of the hydrogen burner 6.

[0019] Each of the plurality of air injection nozzles 8B is configured to inject air toward the flame F formed by the hydrogen burner 6 in a direction intersecting the direction of the axis C of the hydrogen burner 6 (in the illustrated example, a direction perpendicular to the direction of the axis C of the hydrogen burner 6). In the illustrated example, each of the plurality of air injection nozzles 8B injects air toward the corpse 10a (toward the side wall 24).

[0020] In the embodiment shown in Figure 2, the crematorium 2 includes a blower 30 for pressurizing air, an air supply line 31 configured to supply the air pressurized by the blower 30 to a plurality of air injection nozzles 8, and an adjustment device 32 configured to be able to adjust the amount of air supplied to each of the plurality of air injection nozzles 8 for each air injection nozzle 8. More specifically, the air supply line 31 is configured to supply the air pressurized by the blower 30 to a plurality of air injection nozzles 8A and a plurality of air injection nozzles 8B, and the adjustment device 32 is configured to be able to adjust the amount of air supplied to each of the plurality of air injection nozzles 8A for each air injection nozzle 8A, and to be able to adjust the amount of air supplied to each of the plurality of air injection nozzles 8B for each air injection nozzle 8B.

[0021] The upstream end of the air supply line 31 in the air flow direction is connected to the blower 30, and the air supply line 31 branches into multiple parts at its downstream end in the air flow direction, each connected to a multiple air injection nozzle 8 (a multiple air injection nozzles 8A and a multiple air injection nozzles 8B). The adjustment device 32 includes multiple valves 34 provided downstream of the branching positions in the air supply line 31 corresponding to each of the multiple air injection nozzles 8 (a multiple air injection nozzles 8A and a multiple air injection nozzles 8B). A valve 34 is provided in the air supply line 31 for each air injection nozzle 8 (for each air injection nozzle 8A and for each air injection nozzle 8B), and the adjustment device 32 adjusts the aperture of the valve 34 corresponding to each of the multiple air injection nozzles 8, thereby adjusting the amount of air supplied to each of the multiple air injection nozzles 8 for each air injection nozzle 8.

[0022] In the exemplary embodiment shown in Figure 1, the crematorium 2 is equipped with multiple temperature sensors 9a, 9b, 9c for measuring temperatures at multiple positions within the combustion chamber 4. Each of the multiple temperature sensors 9a, 9b, 9c is preferably a temperature sensor suitable for measuring temperatures in high-temperature environments, and may be, for example, a temperature sensor using a thermocouple. In the illustrated example, the multiple temperature sensors 9a, 9b, 9c are installed on the ceiling 20 at intervals in the front-to-rear direction of the combustion chamber 4.

[0023] In the crematorium 2, multiple air injection nozzles 8A that inject air in a direction intersecting the axis C of the hydrogen burner 6 toward the flame F formed by the hydrogen burner 6 are provided at multiple positions along the axis C of the hydrogen burner 6, and the amount of air supplied to each of the multiple air injection nozzles 8A is adjusted for each air injection nozzle 8A using an adjustment device 32, making it possible to flexibly adjust the heat load at multiple positions away from the hydrogen burner 6 along the axis C of the hydrogen burner 6. Therefore, since the heat load can be flexibly adjusted for each part of the body 10a of the cremation subject 10, the entire cremation subject 10 can be properly burned in a short time while minimizing damage to the remains.

[0024] Furthermore, by providing a plurality of air injection nozzles 8B at a plurality of positions along the axis C of the hydrogen burner 6, which inject air in a direction intersecting the axis C of the hydrogen burner 6 toward the flame F formed by the hydrogen burner 6, and adjusting the amount of air supplied to each of the plurality of air injection nozzles 8B for each air injection nozzle 8B using an adjustment device 32, it is possible to flexibly adjust the heat load at a plurality of positions away from the hydrogen burner 6 along the axis C of the hydrogen burner 6. Therefore, because the heat load can be flexibly adjusted for each part of the body 10a of the cremated subject 10, the entire cremated subject 10 can be properly combusted in a short time while minimizing damage to the remains.

[0025] In some embodiments, as shown in Figure 3, the crematorium 2 may further include a control device 40 configured to control the adjustment device 32 based on the measurement results of the above-mentioned multiple temperature sensors 9a, 9b, 9c. The control device 40 controls the opening of the multiple valves 34 of the adjustment device 32 for each valve 34 based on the temperatures at multiple positions in the combustion chamber 4 measured by the multiple temperature sensors 9a, 9b, 9c (i.e., the temperature distribution in the combustion chamber 4), thereby adjusting the amount of air supplied to each of the multiple air injection nozzles 8 (multiple air injection nozzles 8A and multiple air injection nozzles 8B) for each air injection nozzle 8 (for each air injection nozzle 8A and each air injection nozzle 8B). For example, the control device 40 may estimate the distribution of heat load for each part of the corpse 10a based on the temperatures measured by the multiple temperature sensors 9a, 9b, and 9c at multiple positions within the combustion chamber 4, and then, based on the estimated results (the distribution of heat load for each part of the corpse 10a), control the opening of each of the multiple valves 34 of the adjustment device 32 to adjust the heat load for each part of the corpse 10a. This allows the entire cremation subject 10 to be burned appropriately in a short time while minimizing damage to the remains.

[0026] FIG. 4 is a diagram showing an example of the hardware configuration of the control device 40. As shown in FIG. As shown in FIG. 4 , the control device 40 includes, for example, a processor 72, a RAM (Random Access Memory) 74, a ROM (Read Only Memory) 76, a HDD (Hard Disk Drive) 78, an input I / F 80, and an output I / F 82, and is configured using a computer in which these components are connected to one another via a bus 84. Note that the hardware configuration of the control device 40 is not limited to the above, and may be configured using a combination of a control circuit and a storage device. The control device 40 is also configured by a computer executing a program that realizes each function of the control device 40. The functions of the control device 40 are realized, for example, by loading a program stored in a ROM 76 into the RAM 74 and executing it with the processor 72, and by reading and writing data from and to the RAM 74 and the ROM 76. The hardware that makes up the control device 40 may be concentrated in one location or distributed across multiple locations.

[0027] Figure 5 is a schematic cross-sectional view showing a modified example of the crematorium 2 described using Figures 1 to 4. In the crematorium 2 according to the embodiment shown in Figure 6, the symbols common to the components of the crematorium 2 described using Figures 1 to 4 indicate the same components as the components of the crematorium 2 described using Figures 1 to 4 unless otherwise specified, and the explanation will be omitted.

[0028] The crematorium 2 according to the embodiment shown in FIG. 5 is equipped with an imaging device 42 for imaging the cremated subject 10 in the combustion chamber 4, instead of the multiple temperature sensors 9a-9c in the crematorium 2 shown in FIG. 1 etc. Also, in the crematorium 2 shown in FIG. 5, as shown in FIG. 6, the control device 40 may adjust the opening of the multiple valves 34 of the adjustment device 32 for each valve 34 based on imaging data (e.g., video data or still image data) obtained by imaging the cremated subject 10 in the combustion chamber 4 with the imaging device 42. For example, the control device 40 may estimate the distribution of the heat load for each part of the corpse 10a from the combustion state of each part of the corpse 10a and the state of the flame in the combustion chamber 4 based on the imaging data obtained by imaging the corpse 10a in the combustion chamber 4 with the imaging device 42, and may adjust the opening of the multiple valves 34 of the adjustment device 32 for each valve 34 to adjust the excess or deficiency of the heat load for each part of the corpse 10a based on the estimated result (the distribution of the heat load for each part of the corpse 10a). This allows each body 10a to be burned with an appropriate thermal load depending on the combustion state of each part of the body 10a and the state of the flame in the combustion chamber 4, and the entire cremation subject 10 can be burned appropriately in a short time while minimizing damage to the remains.

[0029] The present disclosure is not limited to the above-described embodiments, but also includes modifications to the above-described embodiments and appropriate combinations of these modifications.

[0030] In some embodiments, for example, in the crematorium 2 described using Figures 1 and 2, the operator may adjust the opening of each valve 34 of the adjustment device 32 based on the temperatures at multiple positions within the combustion chamber 4 measured by multiple temperature sensors 9a-9c, thereby adjusting the amount of air supplied to each of the multiple air injection nozzles 8 for each air injection nozzle 8. In this case, the operator may estimate the distribution of heat load for each part of the corpse 10a based on the temperatures at multiple positions within the combustion chamber 4 measured by multiple temperature sensors 9a-9c, and adjust the opening of each valve 34 of the adjustment device 32 to adjust the heat load for each part of the corpse 10a. This allows the cremation subject 10 to be cremated appropriately in a short time while minimizing damage to the remains.

[0031] In some embodiments, for example, in the crematorium 2 shown in FIG. 5, the operator may adjust the opening of each valve 34 of the adjustment device 32 based on image data of the corpse 10a in the combustion chamber 4 captured by the imaging device 42, thereby adjusting the amount of air supplied to each of the multiple air injection nozzles 8. In this case, the operator may estimate the distribution of heat load for each part of the corpse 10a from the combustion state of each part of the corpse 10a and the state of the flame in the combustion chamber 4 based on the image data of the corpse 10a captured by the imaging device 42, and adjust the opening of each valve 34 of the adjustment device 32 to adjust the heat load for each part of the corpse 10a. This allows the cremation subject 10 to be cremated appropriately in a short time while minimizing damage to the remains.

[0032] In some embodiments, the operator may adjust the opening of each valve 34 of the adjustment device 32 based on the condition of the cremated object in the combustion chamber 4 (e.g., the combustion state and flame state of each part of the corpse 10a) as seen through a window (not shown) in the wall of the combustion chamber 4, thereby adjusting the amount of air supplied to each of the air injection nozzles 8 for each air injection nozzle 8. In this case, the operator may estimate the distribution of heat load for each part of the corpse 10a from the combustion state of each part of the corpse 10a and the flame state in the combustion chamber 4 based on the condition of the cremated object in the combustion chamber 4 as seen through a window (not shown) in the wall of the combustion chamber 4, and adjust the opening of each valve 34 of the adjustment device 32 to adjust the heat load for each part of the corpse 10a. This allows the entire cremated object 10 to be burned appropriately in a short time while minimizing damage to the remains.

[0033] In some embodiments, the crematorium 2 may be equipped with a compressor instead of the blower 30.

[0034] The contents described in each of the above embodiments can be understood, for example, as follows.

[0035] [1] At least one embodiment of the crematorium according to the present disclosure (e.g., the crematorium 2 described above) includes: A combustion chamber (e.g., the combustion chamber 4 described above) for burning the cremation object (e.g., the cremation object 10 described above); A hydrogen burner (for example, the above-mentioned hydrogen burner 6) provided in the combustion chamber; a plurality of first air injection nozzles (e.g., the air injection nozzles 8 described above) configured to inject air into the combustion chamber; an adjusting device (for example, the above-mentioned adjusting device 32) configured to adjust the amount of air supplied to each of the plurality of first air injection nozzles for each of the first air injection nozzles; Equipped with The plurality of first air injection nozzles are provided at a plurality of positions in the axial direction of the hydrogen burner, Each of the plurality of first air injection nozzles is configured to inject air toward the flame formed by the hydrogen burner in a direction intersecting the axial direction of the hydrogen burner.

[0036] The crematorium described in [1] above is equipped with a hydrogen burner installed in the combustion chamber, and compared to burners that burn natural gas, hydrogen burners can burn stably even if the burner's lambda value (here, the lambda value is the amount of air supplied from the burner to the combustion chamber divided by the theoretical amount of air required to combust the fuel supplied from the burner to the combustion chamber) is small. For this reason, as in the crematorium described in [1] above, by providing multiple first air injection nozzles at multiple positions along the axis of the hydrogen burner, which inject air toward the flame formed by the hydrogen burner in a direction intersecting the axial direction of the hydrogen burner, and adjusting the amount of air supplied to each of the multiple first air injection nozzles for each first air injection nozzle using an adjustment device, it is possible to flexibly adjust the heat load at multiple positions away from the hydrogen burner in the axial direction of the hydrogen burner. Therefore, since the heat load can be flexibly adjusted for each part of the body to be cremated, the entire body to be cremated can be properly burned in a short time while minimizing damage to the remains.

[0037] [2] In some embodiments, in the crematorium described in [1] above, a plurality of second air injection nozzles (e.g., the above-mentioned plurality of air injection nozzles 8B) arranged at positions different from the plurality of first air injection nozzles (e.g., the above-mentioned plurality of air injection nozzles 8A) in the circumferential direction around the axis of the hydrogen burner, and configured to inject air into the combustion chamber; the adjusting device is configured to adjust the amount of air supplied to each of the plurality of second air injection nozzles for each of the second air injection nozzles, The plurality of second air injection nozzles are provided at a plurality of positions in the axial direction of the hydrogen burner, Each of the plurality of second air injection nozzles is configured to inject air toward the flame formed by the hydrogen burner in a direction intersecting the axial direction of the hydrogen burner.

[0038] According to the crematorium described in [2] above, it is possible to reduce unevenness in the heat load in the circumferential direction around the axis of the hydrogen burner, so that the entire cremated object can be properly burned in a short time while minimizing damage to the remains.

[0039] [3] In some embodiments, in the crematorium described in [1] above, The combustion chamber includes a first sidewall (e.g., the sidewall 24 described above) and a second sidewall (e.g., the sidewall 26 described above) opposite the first sidewall, the plurality of first air injection nozzles (for example, the plurality of air injection nozzles 8A described above) are provided on the first side wall, The crematorium further comprises a plurality of second air injection nozzles (e.g., the above-mentioned plurality of air injection nozzles 8B) provided on the second side wall and configured to inject air into the combustion chamber; the adjusting device is configured to adjust the amount of air supplied to each of the plurality of second air injection nozzles for each of the second air injection nozzles, The plurality of second air injection nozzles are provided at a plurality of positions in the axial direction of the hydrogen burner, Each of the plurality of second air injection nozzles is configured to inject air toward the flame formed by the hydrogen burner in a direction intersecting the axial direction of the hydrogen burner.

[0040] According to the crematorium described in [3] above, it is possible to reduce the unevenness between the thermal load on the first side wall and the thermal load on the second side wall of the cremated object, so that the entire cremated object can be properly burned in a short time while minimizing damage to the remains.

[0041] [4] In some embodiments, in the crematorium according to any one of [1] to [3] above, the hydrogen burner is configured to mix a fuel gas containing hydrogen with air and combust the fuel gas in the combustion chamber; The λ value of the air-fuel ratio between the air supplied from the hydrogen burner to the combustion chamber and the fuel gas supplied from the hydrogen burner to the combustion chamber is 0.2 or more and 0.5 or less.

[0042] According to the crematorium described in [4] above, by adjusting the amount of air supplied to each of the first air injection nozzles individually while keeping the lambda value between 0.2 and 0.5, it is possible to stabilize the flame formed by the hydrogen burner and flexibly adjust the heat load at multiple positions away from the hydrogen burner in the axial direction of the burner. Therefore, since the heat load can be flexibly adjusted for each part of the body to be cremated, the entire body to be cremated can be properly burned in a short time while minimizing damage to the remains.

[0043] [5] In some embodiments, in the crematorium described in [4] above, The λ value is 0.3 or more and 0.4 or less.

[0044] According to the crematorium described in [5] above, by adjusting the amount of air supplied to each of the first air injection nozzles individually while keeping the lambda value between 0.3 and 0.4, it is possible to stabilize the flame formed by the hydrogen burner and flexibly adjust the heat load at multiple positions away from the hydrogen burner in the axial direction of the hydrogen burner. Therefore, since the heat load can be flexibly adjusted for each part of the body to be cremated, the entire body to be cremated can be properly burned while minimizing damage to the remains.

[0045] [6] In some embodiments, in the crematorium according to any one of [1] to [5] above, A plurality of temperature sensors (for example, the above-mentioned plurality of temperature sensors 9a to 9c) are provided for measuring temperatures at a plurality of positions in the combustion chamber, a control device (e.g., the control device 40 described above) configured to control the adjustment device based on the measurement results of the plurality of temperature sensors; Equipped with.

[0046] According to the crematorium described in [6] above, the amount of air supplied to each of the first air injection nozzles can be adjusted based on the temperature at multiple locations in the combustion chamber, thereby adjusting the heat load for each part of the body. This allows the entire body to be cremated appropriately in a short time while minimizing damage to the remains.

[0047] [7] In some embodiments, in the crematorium according to any one of [1] to [6] above, An imaging device (such as the imaging device 42 described above) for imaging the cremated object in the combustion chamber; A control device (such as the above-mentioned control device 40) configured to control the adjustment device based on imaging data obtained by imaging the cremated object in the combustion chamber with the imaging device; Equipped with.

[0048] According to the crematorium described in [7] above, the amount of air supplied to each of the first air injection nozzles can be adjusted based on the image data obtained by imaging the cremated body in the combustion chamber using an imaging device, thereby adjusting the heat load for each part of the body. This allows the entire body to be burned appropriately in a short time while minimizing damage to the remains.

[0049] [8] In a method for operating a crematorium (e.g., the crematorium 2 described above) according to at least one embodiment of the present disclosure, The crematorium is A combustion chamber (e.g., the combustion chamber 4 described above) for burning the cremation object (e.g., the cremation object 10 described above); A hydrogen burner (for example, the above-mentioned hydrogen burner 6) provided in the combustion chamber; a plurality of air injection nozzles (e.g., the plurality of air injection nozzles 8 described above) configured to inject air into the combustion chamber; an adjusting device (for example, the above-mentioned adjusting device 32) capable of adjusting the amount of air supplied to each of the plurality of air injection nozzles for each of the air injection nozzles; Equipped with The plurality of air injection nozzles are provided at a plurality of positions in the axial direction of the hydrogen burner, each of the plurality of air injection nozzles is configured to inject air toward a flame formed by the hydrogen burner in a direction intersecting an axial direction of the hydrogen burner; The operating method includes: The method further comprises a step of adjusting the amount of air supplied to each of the plurality of air injection nozzles by the adjusting device based on at least one of the temperatures at a plurality of positions within the combustion chamber, image data obtained by imaging the cremated subject within the combustion chamber, and the condition of the cremated subject within the combustion chamber as seen through a window provided in a wall of the combustion chamber.

[0050] According to the crematorium operation method described in [8] above, the amount of air supplied to each of the air injection nozzles can be adjusted based on at least one of the following: the temperature at multiple positions within the combustion chamber, image data obtained by imaging the cremated body within the combustion chamber, and the state of the cremated body within the combustion chamber as seen through a window in the wall of the combustion chamber. This makes it possible to adjust the heat load for each part of the body, whether it is excessive or insufficient. This allows the entire body to be cremated appropriately in a short time while minimizing damage to the remains. [Explanation of symbols]

[0051] 2 Crematorium 4 Combustion chamber 6 Hydrogen Burner 8, 8A, 8B, 8C, 8D Air injection nozzle 9a, 9b, 9c Temperature sensors 10 Cremation eligible 10a Corpse 10b coffin 12 carts 14 Fuel line 16 Air Line 18 Doors 19 Back wall 20 Ceiling 22 beds 23 Exit 24,26 side wall 30 Blower 31 Air supply line 32 Adjustment device 34 Valve 40 Control device 42 Imaging device 72 processors 74 RAM 76 ROM 78 HDD 80 input I / F 82 Output I / F 84 Bus

Claims

1. a combustion chamber for burning the cremated remains; a hydrogen burner provided in the combustion chamber; a plurality of first air injection nozzles configured to inject air into the combustion chamber; an adjusting device configured to adjust the amount of air supplied to each of the plurality of first air injection nozzles for each of the first air injection nozzles; Equipped with The plurality of first air injection nozzles are provided at a plurality of positions in the axial direction of the hydrogen burner, A crematorium, wherein each of the plurality of first air injection nozzles is configured to inject air in a direction intersecting the axial direction of the hydrogen burner toward the flame formed by the hydrogen burner.

2. a plurality of second air injection nozzles provided at positions different from the plurality of first air injection nozzles in a circumferential direction around the axis of the hydrogen burner, the second air injection nozzles being configured to inject air into the combustion chamber; the adjusting device is configured to adjust the amount of air supplied to each of the plurality of second air injection nozzles for each of the second air injection nozzles, The plurality of second air injection nozzles are provided at a plurality of positions in the axial direction of the hydrogen burner, 2. The crematorium according to claim 1, wherein each of the plurality of second air injection nozzles is configured to inject air in a direction intersecting the axial direction of the hydrogen burner toward the flame formed by the hydrogen burner.

3. the combustion chamber includes a first sidewall and a second sidewall opposite the first sidewall, the plurality of first air injection nozzles are disposed on the first sidewall; The crematorium further comprises a plurality of second air injection nozzles provided on the second side wall, the second air injection nozzles being configured to inject air into the combustion chamber; the adjusting device is configured to adjust the amount of air supplied to each of the plurality of second air injection nozzles for each of the second air injection nozzles, The plurality of second air injection nozzles are provided at a plurality of positions in the axial direction of the hydrogen burner, 2. The crematorium according to claim 1, wherein each of the plurality of second air injection nozzles is configured to inject air in a direction intersecting the axial direction of the hydrogen burner toward the flame formed by the hydrogen burner.

4. the hydrogen burner is configured to mix a fuel gas containing hydrogen with air and combust the fuel gas in the combustion chamber; The crematorium according to claim 1, wherein the λ value of the air-fuel ratio between the air supplied from the hydrogen burner to the combustion chamber and the fuel gas supplied from the hydrogen burner to the combustion chamber is 0.2 or more and 0.5 or less.

5. The crematorium according to claim 4, wherein the lambda value is greater than or equal to 0.3 and less than or equal to 0.

4.

6. a plurality of temperature sensors for measuring temperatures at a plurality of positions in the combustion chamber; a control device configured to control the adjustment device based on measurement results of the plurality of temperature sensors; The crematorium of claim 1, comprising:

7. An imaging device for imaging the cremated object in the combustion chamber; A control device configured to control the adjustment device based on imaging data obtained by imaging the cremation target in the combustion chamber with the imaging device; The crematorium of claim 1, comprising:

8. a combustion chamber for burning the cremated remains; a hydrogen burner provided in the combustion chamber; a plurality of air injection nozzles configured to inject air into the combustion chamber; an adjusting device capable of adjusting the amount of air supplied to each of the plurality of air injection nozzles for each of the air injection nozzles; A method for operating a crematorium comprising: The plurality of air injection nozzles are provided at a plurality of positions in the axial direction of the hydrogen burner, each of the plurality of air injection nozzles is configured to inject air toward a flame formed by the hydrogen burner in a direction intersecting an axial direction of the hydrogen burner; The operating method includes: A method for operating a crematorium, comprising a step of adjusting the amount of air supplied to each of the plurality of air injection nozzles by the adjusting device based on at least one of the temperatures at a plurality of positions within the combustion chamber, image data obtained by imaging the cremated subject within the combustion chamber, and the condition of the cremated subject within the combustion chamber as seen through a window provided in a wall of the combustion chamber.

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