Crematory and crematory operating method

Abstract

To provide a crematory capable of appropriately cremating an object to be cremated in a short time.SOLUTION: A crematory comprises a combustion chamber for burning an object to be cremated, a plurality of duct burners arrayed in the upper part of the combustion chamber, and an air supply unit configured to supply air to the combustion chamber, each of the plurality of duct burners includes: a fuel pipe; and a plurality of nozzle holes provided at a plurality of positions in an axial direction of the fuel pipe, and configured to spray fuel supplied from the fuel pipe downward. The plurality of duct burners are arrayed at intervals in a direction intersecting the axial direction of the fuel pipe.SELECTED DRAWING: Figure 1

Description

[Technical Field]

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

[0002] Patent document 1 describes that by installing a ceramic heater at the rear of the main combustion chamber of a crematorium, where the head of the corpse is located, and spreading a flame throughout the main combustion chamber using the main burner in the main combustion chamber, and applying heat to the head of the corpse using the ceramic heater, heating of the legs of the corpse can be suppressed, unnecessary combustion can be suppressed, and cooling time can be shortened.

[0003] In addition, a group of ceramic heaters is formed by arranging multiple ceramic heaters in the short direction of the inner wall in the upper part of the main combustion chamber, and multiple groups of ceramic heaters are arranged in a row from the other end side to the one end side in the longitudinal direction, and each group of ceramic heaters is provided with a heating control means. Therefore, the heating area by the ceramic heater groups arranged in the front-to-rear direction can be moved back and forth depending on the height of the deceased, that is, the corpse. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2019-060546 Summary of the Invention [Problem to be solved by the invention]

[0005] Generally, ceramic heaters are not suitable for generating large heat loads, so the crematorium described in Patent Document 1 still has issues in terms of properly cremating the cremated body in a short period of time.

[0006] 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 cremate a cremation target in a short period of time. [Means for solving the problem]

[0007] 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 plurality of duct burners arranged in an upper portion of the combustion chamber; an air supply configured to supply air to the combustion chamber; Equipped with each of the plurality of duct burners includes a fuel pipe and a plurality of nozzle holes provided at intervals in an axial direction of the fuel pipe and configured to inject fuel supplied from the fuel pipe downward; The plurality of duct burners are arranged at intervals in a direction intersecting the axial direction of the fuel pipes. [Effects of the Invention]

[0008] At least one embodiment of the present disclosure provides a crematorium and an operating method thereof that can properly cremate the object of cremation in a short period of time. [Brief explanation of the drawings]

[0009] [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 diagram showing the arrangement of the plurality of duct burners 8 in FIG. 1 when viewed from below along the vertical direction. FIG. [Figure 3] 2 is a diagram showing an example of a cross section of a nozzle 26 and a flame stabilizer 28 taken along an axis C1 of the nozzle 26. FIG. [Figure 4] 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 5] FIG. 2 is a diagram illustrating an example of a hardware configuration of a control device 40. [Figure 6] FIG. 10 is a schematic cross-sectional view showing a modified example of the crematorium furnace 2. [Figure 7] 4 is a block diagram showing a schematic relationship between an imaging device 42, a control device 40, and an adjustment device 32. FIG. [Figure 8] FIG. 10 is a schematic cross-sectional view showing another modified example of the crematorium furnace 2. [Figure 9] FIG. 10 is a schematic cross-sectional view showing a modified example of a plurality of duct burners 8. [Figure 10] FIG. 10 is a schematic cross-sectional view showing yet another modified example of the crematorium furnace 2. DETAILED DESCRIPTION OF THE INVENTION

[0010] 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.

[0011] FIG. 1 is a schematic cross-sectional view showing the configuration of a combustion chamber 4 of a crematorium 2 according to one embodiment. As shown in FIG. 1, the crematorium 2 comprises a combustion chamber 4, a main burner 6, and a plurality of duct burners 8.

[0012] A cart 12 carrying a cremation subject 10, which is the subject of cremation, is carried into the combustion chamber 4. The cremation subject 10 includes a corpse 10a and a coffin 10b in which the corpse 10a is placed.

[0013] The main burner 6 is configured to mix fuel supplied from the fuel line 14 with air supplied from the air line 16, burn the fuel, and form a flame to combust the cremated object 10. The main burner 6 functions as a fuel supply unit that supplies fuel to the inside of the combustion chamber 4 and an air supply unit that supplies air to the inside of the combustion chamber 4.

[0014] Multiple duct burners 8 are arranged above the combustion chamber 4. Each of the multiple duct burners 8 may be a hydrogen burner that burns hydrogen gas as fuel. Using hydrogen burners as duct burners 8 allows for a higher combustion temperature compared to burners that use only natural gas as fuel, making it possible to cremate the cremated subject 10 in a shorter time. Furthermore, the amount of pollutant emissions from combustion can be reduced. The hydrogen burner may be one that burns high-purity hydrogen gas (mono-fuel combustion) or one that combusts hydrogen gas with natural gas or other gases. The 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.

[0015] In the illustrated exemplary embodiment, the combustion chamber 4 includes a door 18 for transporting the cremation subject 10 into the combustion chamber 4, a rear wall 19 which is the wall of the combustion chamber 4 opposite the door 18, a ceiling 20, a floor 22, and a pair of side walls (not shown) (a pair of side walls facing each other in the depth direction of the page), and the main burner 6 is provided on the rear wall 19.

[0016] 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 (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 cart 12 may be arranged so that the depth direction of the combustion chamber 4 coincides with the longitudinal direction of the coffin 10b.

[0017] 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.

[0018] FIG. 2 is a diagram showing an example of the arrangement of the plurality of duct burners 8 in FIG. 1 when viewed from below along the vertical direction. 2, each of the multiple duct burners 8 includes a fuel pipe 24 extending along a straight line and multiple nozzles 26 provided at intervals in the axial direction d1 of the fuel pipe 24 and configured to spray fuel supplied from the fuel pipe 24 downward. The multiple duct burners 8 are arranged at intervals in a direction d2 intersecting the axial direction d1 of the fuel pipe 24 (in the illustrated example, a direction perpendicular to the axial direction d1 of the fuel pipe 24). In the illustrated example, the axial direction d1 of the fuel pipe 24 is the width direction of the combustion chamber 4, and the fuel pipe 24 extends along the width direction of the combustion chamber 4. Also, in the illustrated example, the direction d2 is the front-rear direction of the combustion chamber 4, and the multiple duct burners 8 are provided at intervals in the front-rear direction of the combustion chamber 4 (the longitudinal direction of the bogie 12).

[0019] As shown in FIG. 2, at least one of the multiple duct burners 8 may include an ignition device 25 that ignites fuel injected from a nozzle 26. For example, if the four duct burners 8 shown in FIG. 2 are defined as duct burners 8A, 8B, 8C, and 8D, in order from the front of the combustion chamber 4, in the example shown in FIG. 2, an ignition device 25 is provided on duct burner 8D, which is located at the rearmost side of the combustion chamber 4 among the multiple duct burners 8, and the ignition device 25 ignites the fuel injected from the nozzle 26 next to the ignition device 25, and then the flame spreads to ignite all of the other nozzles 26. The ignition device 25 may be configured to ignite the fuel injected from the nozzle 26. For example, pilot ignition, which ignites fuel with a flame formed by a small burner (ignition torch), or direct ignition, which ignites fuel by spark discharge from an ignition plug, may be used. Furthermore, an ignition device 25 may be provided for each duct burner 8. Furthermore, if the fuel sprayed from the multiple duct burners 8 can be ignited by the flame of the main burner 6 (see FIG. 1), the multiple duct burners 8 do not need to be equipped with an ignition device 25.

[0020] When a spark plug is used as the ignition device 25, whether to use a fixed spark plug or a movable spark plug may be determined depending on the ambient temperature of the spark plug. For example, a fixed spark plug may be used when the ambient temperature of the spark plug is such that the spark plug will not burn out, whereas a movable spark plug may be used so that the spark plug is pulled out of the combustion chamber 4 after igniting the fuel when the ambient temperature of the spark plug is such that the spark plug will burn out. When an ignition torch is used, no ignition torch pulling mechanism is required, but when multiple ignition torches are required, a spark plug is more cost-effective.

[0021] 2, each of the multiple duct burners 8 includes a flame stabilizer 28 for each nozzle 26. In the example shown, a pair of flame stabilizers 28 is provided for each nozzle 26, and the nozzle 26 is disposed between the pair of flame stabilizers 28. A plurality of through holes 30 are formed in each of the flame stabilizers 28.

[0022] As shown in Figure 2, the crematorium 2 is equipped with an adjustment device 32 that can adjust the amount of fuel supplied to each of the multiple duct burners 8 for each duct burner 8. In the example shown, the adjustment device 32 includes multiple valves 34 provided corresponding to each of the multiple duct burners 8. The valves 34 are provided for each duct burner 8 and are configured to be able to adjust the flow rate of fuel flowing through the fuel pipe 24 of the corresponding duct burner 8.

[0023] FIG. 3 is a diagram showing an example of a cross section of the nozzle 26 and the flame stabilizer 28 taken along the axis C1 of the nozzle 26 (the center line of the nozzle 26). In the cross section shown in FIG. 3, the pair of flame stabilizers 28 are arranged in a V-shape so that the distance between the pair of flame stabilizers 28 increases downward (as they move away from the base end 26a of the nozzle 26).

[0024] The nozzle 26 is configured in a cylindrical shape and includes a plurality of nozzle holes 36 at the tip end of the nozzle 26 that inject fuel. The plurality of nozzle holes 36 may be arranged at intervals in the circumferential direction centered on the axis C1 of the nozzle 26, for example. In the cross section shown in Fig. 3, each of the nozzle holes 36 extends in a direction inclined with respect to the axis C1 of the nozzle 26 so as to move away from the axis C1 of the nozzle 26 as it extends downward.

[0025] In some embodiments, the multiple duct burners 8 provided in the crematorium 2 described using Figures 1 to 3 may include multiple nozzle holes 36 with different hole diameters in at least one of the width direction and front-to-rear direction of the combustion chamber 4.

[0026] For example, of the three nozzles 26 provided in each of the multiple duct burners 8, if each of the two nozzles 26 located at one end side and the other end side of the combustion chamber 4 in the width direction of the combustion chamber 4 is defined as an end-side nozzle 26e, and the nozzle 26 located closer to the center Cc of the combustion chamber 4 in the width direction of the combustion chamber 4 than the two end-side nozzles 26e (in the illustrated example, the center Cc of the combustion chamber 4 in the width direction of the combustion chamber 4) is defined as a central nozzle 26c, the hole diameter of the nozzle hole 36 of the central nozzle 26c of duct burner 8D may be larger than the hole diameter of the nozzle hole 36 of the central nozzle 26c of duct burner 8A. In this case, for example, by placing the head of the corpse 10a below the nozzle hole 36 of the central nozzle 26c of the duct burner 8D and the toes of the corpse 10a below the nozzle hole 36 of the central nozzle 26c of the duct burner 8A, the head, which requires a relatively greater heat load than the toes, can be properly burned, making it possible to properly cremate the cremation subject 10 in a short period of time.

[0027] Furthermore, for example, the diameter of the nozzle hole 36 of the central nozzle 26c of the duct burner 8D may be larger than the diameter of the nozzle hole 36 of the end nozzle 26e of the duct burner 8D. In this case, for example, by placing the head of the corpse 10a below the nozzle hole 36 of the central nozzle 26c of the duct burner 8D, the head, which requires a large heat load, can be burned efficiently, making it possible to properly cremate the cremation subject 10 in a short period of time.

[0028] In some embodiments, as shown in FIG. 4, the system may further include a control device 40 configured to control the adjustment device 32 based on the measurement results of the multiple temperature sensors 9a, 9b, and 9c. The control device 40 may adjust the amount of fuel supplied to each of the multiple duct burners 8 for each duct burner 8 by controlling the apertures of the multiple valves 34 of the adjustment device 32 for each valve 34 based on the temperatures at multiple positions within the combustion chamber 4 measured by the multiple temperature sensors 9a, 9b, and 9c (i.e., the temperature distribution within the combustion chamber 4). For example, the control device 40 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 the multiple temperature sensors 9a, 9b, and 9c, and then control the apertures of the multiple valves 34 of the adjustment device 32 for each valve 34 to adjust the heat load for each part of the corpse 10a based on the estimated results (the distribution of heat load for each part of the corpse 10a). This allows the cremation subject 10 to be burned appropriately in a short time while minimizing damage to the remains.

[0029] FIG. 5 is a diagram showing an example of the hardware configuration of the control device 40. As shown in FIG. As shown in FIG. 5 , 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 by 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.

[0030] The crematorium 2 described with reference to Figures 1 to 5 can generate a larger heat load by using duct burners 8 than the crematorium described in Patent Document 1, which has a ceramic heater installed above the combustion chamber. Furthermore, the duct burners 8, each including a plurality of nozzle holes 36 located at multiple positions along the axial direction d1 of the fuel pipe 24, are spaced apart in a direction d2 intersecting the axial direction d1 of the fuel pipe 24. This allows for a simple configuration and allows for the nozzle holes 36 to be arranged planarly. For example, by adjusting the fuel flow rate for each duct burner 8 or varying the diameter of the nozzle holes 36 of the duct burner 8 depending on their position, the heat load can be varied depending on the position of the combustion chamber 4. For example, the heat load for a portion of the corpse 10a requiring a relatively high heat, such as the head, can be set higher than the heat load for a portion of the corpse 10a requiring a relatively low heat, such as the toes. This allows for combustion with an appropriate heat load depending on the portion of the corpse 10a, thereby enabling the cremation subject 10 to be cremated appropriately in a short time.

[0031] Figure 6 is a schematic cross-sectional view showing a modified example of the crematorium 2 described using Figures 1 to 5. 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 5 indicate the same components as the components of the crematorium 2 described using Figures 1 to 5, unless otherwise specified, and the explanation will be omitted.

[0032] The crematorium 2 according to the embodiment shown in FIG. 6 is equipped with an imaging device 42 for imaging the cremation 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. 6, as shown in FIG. 7, 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 cremation 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, allowing the cremation subject 10 to be burned appropriately in a short time while minimizing damage to the remains.

[0033] Figure 8 is a schematic cross-sectional view showing another modified example of the crematorium 2 described using Figures 1 to 5. In the crematorium 2 according to the embodiment shown in Figure 8, the symbols common to the components of the crematorium 2 described using Figures 1 to 5 indicate the same components as the components of the crematorium 2 described using Figures 1 to 5, unless otherwise specified, and the explanation will be omitted.

[0034] The crematorium 2 according to the embodiment shown in FIG. 8 further comprises a plurality of lower duct burners 50 arranged at the bottom of the combustion chamber 4, in addition to the configuration of the crematorium 2 shown in FIG. 1 etc. The plurality of lower duct burners 50 includes a fuel pipe 24 extending along the width direction of the combustion chamber 4 and a plurality of nozzles 26 arranged at intervals in the axial direction of the fuel pipe 24 and configured to spray the fuel supplied from the fuel pipe 24 upward. The plurality of lower duct burners 50 are arranged at intervals in a direction intersecting the axial direction of the fuel pipe 24 (in the illustrated example, a direction perpendicular to the axial direction of the fuel pipe 24). Here, the configuration of the lower duct burner 50 is the same as the configuration of the duct burner 8 described using FIG. 2 and FIG. 3 etc., and corresponds to the lower duct burner 50 when the duct burner 8 is turned upside down and placed at the bottom of the combustion chamber 4. Therefore, a detailed description of the configuration of the lower duct burner 50 will be omitted.

[0035] In the configuration shown in Figure 8, flames are formed upward from each nozzle 26 of the multiple lower duct burners 50, but because the cart 12 is present between the multiple lower duct burners 50 and the corpse 10a, the flames formed by each nozzle 26 of the lower duct burners 50 do not come into direct contact with the corpse 10a, and the corpse 10a can be steamed. This makes it possible to prevent damage to the bones of the corpse 10a.

[0036] Figure 9 is a schematic cross-sectional view showing a modified example of the duct burner 8 described using Figure 2 etc. In the multiple duct burners 8 shown in Figure 9, the reference numerals that are common to the respective components of the duct burner 8 described using Figure 2 etc. indicate the same components as the respective components of the duct burner 8 using Figure 2 etc. unless otherwise specified, and explanations thereof will be omitted.

[0037] In some embodiments, for example as shown in FIG. 9, each of the multiple duct burners 8 provided in the crematorium 2 may not be provided with the flame stabilizer 28 (see FIG. 2) described above.

[0038] 9, the nozzle holes 36 of the duct burner 8 may be formed directly in the fuel pipe 24. In the embodiment shown in Fig. 9, in each of the multiple duct burners 8, the fuel pipe 24 has multiple nozzle holes 36 (three nozzle holes 36 in the illustrated example) formed at intervals in the axial direction d1 of the fuel pipe 24.

[0039] In some embodiments, the multiple duct burners 8 shown in FIG. 9 may include multiple nozzle holes 36 with different hole diameters in at least one of the width direction and the front-rear direction of the combustion chamber 4.

[0040] For example, of the three nozzle holes 36 provided in each of the multiple duct burners 8, two nozzle holes 36 located at one end side and the other end side of the combustion chamber 4 in the width direction of the combustion chamber 4 are defined as end-side nozzle holes 36e, and the nozzle hole 36 located closer to the center Cc of the combustion chamber 4 in the width direction of the combustion chamber 4 than the two end-side nozzle holes 36e (in the illustrated example, the center Cc of the combustion chamber 4 in the width direction of the combustion chamber 4) is defined as central nozzle hole 36c. The hole diameter Ddc of the central nozzle hole 36c of duct burner 8D may be larger than the hole diameter Dac of the central nozzle hole 36c of duct burner 8A. In this case, for example, by placing the head of corpse 10a below the central nozzle hole 36c of duct burner 8D and the foot side of corpse 10a below the central nozzle hole 36c of duct burner 8A, the head, which requires a relatively greater heat load than the foot side, can be properly combusted, and the cremation subject 10 can be properly cremated in a short time.

[0041] Furthermore, for example, the hole diameter Ddc of the central nozzle hole 36c of the duct burner 8D may be larger than the hole diameter Dde of the end nozzle hole 36e of the duct burner 8D. In this case, for example, by placing the head of the corpse 10a below the central nozzle hole 36c of the duct burner 8D, the head, which requires a large heat load, can be burned efficiently, making it possible to properly cremate the cremation subject 10 in a short period of time.

[0042] 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.

[0043] For example, in the embodiment shown in Figures 1 and 2, four duct burners 8 are arranged in the upper part of the combustion chamber 4, but the number of duct burners 8 arranged in the upper part of the combustion chamber 4 is not limited to four. By providing two or more duct burners 8 in the upper part of the combustion chamber 4, it is possible to vary the heat load depending on the position in the combustion chamber 4 (for example, depending on the part of the body). Furthermore, although the duct burner 8 shown in FIG. 2 is provided with three nozzles 26, the number of nozzles 26 provided on the duct burner 8 is not limited to three, and may be two or more.

[0044] In some embodiments, as shown in Figure 10, the crematorium 2 may not have a main burner 6 (see Figure 1). In the exemplary embodiment shown in Figure 10, an air nozzle 60 (air supply unit) that supplies air to the combustion chamber 4 is provided instead of the main burner 6. In this case, the fuel sprayed from the multiple duct burners 8 is burned using oxygen in the air supplied from the air nozzle 60. Furthermore, if the main burner 6 is not provided, the cremation subject 10 may be burned only by the flame formed by the multiple duct burners 8.

[0045] In some embodiments, for example, in the crematorium 2 shown in Figure 1, the operator may adjust the opening of each valve 34 of the adjustment device 32 based on the temperatures at multiple positions in the combustion chamber 4 measured by multiple temperature sensors 9a-9c, thereby adjusting the amount of fuel supplied to each of the multiple duct burners 8 for each duct burner 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 in 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 burned appropriately in a short time while minimizing damage to the remains.

[0046] In some embodiments, for example, in the crematorium 2 shown in FIG. 6, 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 fuel supplied to each of the multiple duct burners 8. In this case, the operator may estimate the distribution of heat load for each part of the corpse 10a based on 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 period of time.

[0047] 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 subject within 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 fuel supplied to each of the multiple duct burners 8 for each duct burner 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 within the combustion chamber 4 based on the condition of the cremated subject within 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 cremated subject 10 to be burned appropriately in a short time while minimizing damage to the remains.

[0048] The contents described in each of the above embodiments can be understood, for example, as follows.

[0049] [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 plurality of duct burners (for example, the above-mentioned plurality of duct burners 8) arranged in the upper part of the combustion chamber; an air supply (e.g., the main burner 6 and air nozzle 60 described above) configured to supply air to the combustion chamber; Equipped with each of the plurality of duct burners includes a fuel pipe (e.g., the above-mentioned fuel pipe 24) and a plurality of nozzle holes (e.g., the above-mentioned plurality of nozzle holes 36) provided at a plurality of positions in the axial direction of the fuel pipe (e.g., the above-mentioned axial direction d1) and configured to inject fuel supplied from the fuel pipe downward; The plurality of duct burners are arranged at intervals in a direction intersecting the axial direction of the fuel pipes (for example, the above-mentioned direction d2).

[0050] The crematorium described in [1] above can generate a greater heat load by using duct burners than the crematorium described in Patent Document 1, which has a ceramic heater installed above the combustion chamber. Furthermore, since multiple duct burners, each containing multiple nozzle holes located at multiple positions along the axial direction of the fuel pipe, are spaced apart in a direction intersecting the axial direction of the fuel pipe, the nozzle holes can be arranged in a planar manner with a simple configuration. Therefore, by adjusting the fuel flow rate for each duct burner or varying the diameter of the nozzle holes of the duct burner depending on the position, the heat load can be varied depending on the position in the combustion chamber (e.g., depending on the part of the body). This allows the crematorium to be cremated appropriately in a short time.

[0051] [2] In some embodiments, in the crematorium described in [1] above, The fuel supply system further includes an adjusting device (for example, the adjusting device 32 described above) that can adjust the amount of fuel supplied to each of the plurality of duct burners for each of the duct burners.

[0052] The crematorium described in [2] above allows for different thermal loads to be applied depending on the location in the combustion chamber (e.g., depending on the part of the body), making it possible to cremate the body appropriately in a short time.

[0053] [3] In some embodiments, in the crematorium described in [1] or [2] above, The combustion chamber includes a door (e.g., the door 18 described above) for transporting the cremated object into the combustion chamber, If the door side of the combustion chamber is defined as the front side of the combustion chamber, and the side of the combustion chamber opposite the door is defined as the rear side of the combustion chamber, The plurality of duct burners are arranged at intervals in the front-rear direction of the combustion chamber.

[0054] In a typical crematorium, a cart carrying a coffin containing a body is brought into the combustion chamber so that the front-to-back direction of the combustion chamber is roughly aligned with the height of the body to be cremated. Therefore, with the crematorium described in [3] above, for example, by adjusting the fuel flow rate for each duct burner, it is possible to vary the heat load along the height of the body, for example, between the head and legs of the body. This makes it possible to properly cremate the body to be cremated in a short time.

[0055] [4] In some embodiments, in the crematorium according to any one of [1] to [3] above, The plurality of duct burners are arranged at intervals in the longitudinal direction of the cremation object (for example, the height direction of the above-mentioned corpse 10a, i.e., the longitudinal direction of the coffin 10b).

[0056] According to the crematorium described in [4] above, in a typical crematorium, a cart carrying a coffin containing a corpse is brought into the combustion chamber so that the front-to-back direction of the combustion chamber roughly coincides with the length direction of the cremated body (the direction of the corpse's height and the length of the coffin). Therefore, with the crematorium described in [4] above, it is possible to vary the heat load along the corpse's height by, for example, adjusting the fuel flow rate for each duct burner, and to vary the heat load between the head and foot sides of the corpse. This makes it possible to properly cremate the cremated body in a short amount of time.

[0057] [5] In some embodiments, in the crematorium described in [3] above, The plurality of nozzle holes included in the plurality of duct burners are A first nozzle hole (for example, the nozzle hole 36 of the central nozzle 26c of the duct burner 8A described above, the central nozzle hole 36c of the duct burner 8A), A second nozzle hole (for example, the nozzle hole 36 of the central nozzle 26c of the duct burner 8D described above, the central nozzle hole 36c of the duct burner 8D) that is provided at a position different from the first nozzle hole in the front-rear direction of the combustion chamber and has a larger hole diameter than the first nozzle hole; Includes.

[0058] According to the crematorium described in [5] above, by appropriately setting the nozzle hole diameter according to the part of the body, for example, by positioning the part of the body that requires a relatively large amount of heat below the second nozzle hole and the part of the body that requires a relatively small amount of heat below the first nozzle hole, it is possible to properly cremate the body in a short time.

[0059] [6] In some embodiments, in the crematorium described in [3] above, The plurality of nozzle holes included in the plurality of duct burners are A first nozzle hole (for example, the nozzle hole 36 of the end-side nozzle 26e of the duct burner 8D, the end-side nozzle hole 36e of the duct burner 8D) A second nozzle hole (for example, the nozzle hole 36 of the central nozzle 26c of the duct burner 8D described above, the central nozzle hole 36c of the duct burner 8D) that is located closer to the center in the width direction of the combustion chamber than the first nozzle hole and has a larger hole diameter than the first nozzle hole; Includes.

[0060] According to the crematorium described in [6] above, for example, by placing the head of the corpse below the second nozzle hole, the head, which requires a large heat load, can be burned efficiently, making it possible to properly cremate the person to be cremated in a short period of time.

[0061] [7] In some embodiments, in the crematorium described in [2] above, A plurality of temperature sensors (for example, the above-mentioned plurality of temperature sensors 9a to 9c) 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; Further provided with:

[0062] According to the crematorium described in [7] above, the amount of fuel supplied to each of the multiple duct burners can be adjusted based on the temperatures at multiple locations in the combustion chamber, allowing for the appropriate amount of heat load to be adjusted for each part of the body. This allows the crematorium to burn properly in a short time while minimizing damage to the remains.

[0063] [8] In some embodiments, in the crematorium described in [2] 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; Further provided with:

[0064] According to the crematorium described in [8] above, the amount of fuel supplied to each of the multiple duct burners can be adjusted based on the image data obtained by photographing the body to be cremated, thereby adjusting the heat load for each part of the body. This allows the body to be burned appropriately in a short time while minimizing damage to the remains.

[0065] [9] In some embodiments, in the crematorium according to any one of [1] to [8] above, Each of the plurality of duct burners is a hydrogen burner.

[0066] The crematorium described in [9] above can achieve a higher combustion temperature than a burner using natural gas, allowing the crematorium to be cremated in a shorter time. It also reduces the amount of pollutants emitted by combustion.

[0067]

[10] In some embodiments, in the crematorium according to any one of [1] to [9] above, Further comprising a plurality of lower duct burners (e.g., the above-mentioned lower duct burner 50) arranged in the lower part of the combustion chamber; Each of the plurality of lower duct burners includes a lower fuel pipe (e.g., the above-mentioned fuel pipe 24) and a plurality of lower nozzle holes (e.g., the above-mentioned nozzle hole 36) spaced apart in the axial direction of the lower fuel pipe and configured to spray fuel supplied from the lower fuel pipe upward.

[0068] According to the crematorium described in

[10] above, by placing a cart between the multiple lower duct burners and the body, the flames formed by the lower duct burners do not come into direct contact with the body, allowing the body to be steamed. This reduces damage to the remains of the body.

[0069]

[11] A method for operating a crematorium according to at least one embodiment of the present disclosure, comprising: 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 plurality of duct burners (for example, the above-mentioned plurality of duct burners 8) arranged in the upper part of the combustion chamber; an air supply (e.g., the main burner 6 and air nozzle 60 described above) configured to supply air to the combustion chamber; an adjusting device (for example, the adjusting device 32 described above) capable of adjusting the amount of fuel supplied to each of the plurality of duct burners for each of the duct burners; Equipped with each of the plurality of duct burners includes a fuel pipe (e.g., the above-mentioned fuel pipe 24) and a plurality of nozzle holes (e.g., the above-mentioned plurality of nozzle holes 36) provided at a plurality of positions in the axial direction of the fuel pipe (e.g., the above-mentioned axial direction d1) and configured to inject fuel supplied from the fuel pipe downward; The plurality of duct burners are arranged at intervals in a direction intersecting the axial direction of the fuel pipe (for example, the above-mentioned direction d2), The operating method includes: The method further comprises a step of adjusting the amount of fuel supplied to each of the plurality of duct burners by the adjusting device based on at least one of the temperatures at a plurality of positions within the combustion chamber, imaging data obtained by imaging the cremated subject within the combustion chamber, and the state of the cremated subject within the combustion chamber as seen through a window provided in a wall of the combustion chamber.

[0070] According to the crematorium operating method described in

[11] above, the amount of fuel supplied to each of the duct burners is adjusted based on at least one of the following: temperatures at multiple positions in the combustion chamber; imaging 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 in the wall of the combustion chamber. This allows for the appropriate combustion of the cremated subject within a short period of time while minimizing damage to the remains. Note that in

[11] above, "at least one of the temperatures at multiple positions in the combustion chamber; imaging data obtained by imaging the cremated subject during operation of the crematorium; and the condition of the cremated subject within the combustion chamber as seen through a window in the wall of the combustion chamber" may refer to only the temperatures at multiple positions in the combustion chamber, only imaging data obtained by imaging the cremated subject, only the condition of the cremated subject within the combustion chamber as seen through a window in the wall of the combustion chamber, or any combination thereof. [Explanation of symbols]

[0071] 2 Crematorium 4 Combustion chamber 6 Main Burner 8, 8A, 8B, 8C, 8D Duct Burner 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 Fuel pipe 25 Ignition device 26 nozzles 26a proximal end 26c Center nozzle 26e End nozzle 28 Flame holding plate 30 through holes 32 Adjustment device 34 Valve 36 nozzle holes 36c Central nozzle hole 36e End nozzle hole 40 Control device 42 Imaging device 50 Lower Duct Burner 60 Air Nozzle 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 plurality of duct burners arranged in an upper portion of the combustion chamber; an air supply configured to supply air to the combustion chamber; Equipped with each of the plurality of duct burners includes a fuel pipe and a plurality of nozzle holes provided at a plurality of positions in an axial direction of the fuel pipe and configured to inject fuel supplied from the fuel pipe downward; A crematorium furnace, wherein the plurality of duct burners are arranged at intervals in a direction intersecting the axial direction of the fuel pipe.

2. The crematorium according to claim 1, further comprising an adjusting device capable of adjusting the amount of fuel supplied to each of the plurality of duct burners for each of the duct burners.

3. The combustion chamber includes a door for carrying the cremation target into the combustion chamber, If the door side of the combustion chamber is defined as the front side of the combustion chamber, and the side of the combustion chamber opposite the door is defined as the rear side of the combustion chamber, The crematorium according to claim 1, wherein the plurality of duct burners are arranged at intervals in the front-to-rear direction of the combustion chamber.

4. 2. The crematorium of claim 1, wherein the plurality of duct burners are arranged at intervals along the length of the object to be cremated.

5. The plurality of nozzle holes included in the plurality of duct burners are A first nozzle hole; a second nozzle hole provided at a position different from the first nozzle hole in the front-rear direction of the combustion chamber, the second nozzle hole having a larger diameter than the first nozzle hole; 4. The crematorium of claim 3, comprising:

6. The plurality of nozzle holes included in the plurality of duct burners are A first nozzle hole; a second nozzle hole located closer to the center of the combustion chamber in the width direction than the first nozzle hole and having a larger hole diameter than the first nozzle hole; 4. The crematorium of claim 3, comprising:

7. 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 2 further comprising:

8. 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 cremated object in the combustion chamber with the imaging device; The crematorium of claim 2 further comprising:

9. 10. The crematorium of claim 1, wherein each of said plurality of duct burners is a hydrogen burner.

10. Further comprising a plurality of lower duct burners arranged in a lower portion of the combustion chamber, 2. The crematorium of claim 1, wherein each of the plurality of lower duct burners includes a lower fuel pipe and a plurality of lower nozzle holes spaced apart in the axial direction of the lower fuel pipe and configured to spray fuel supplied from the lower fuel pipe upward.

11. a combustion chamber for burning the cremated remains; a plurality of duct burners arranged in an upper portion of the combustion chamber; an air supply configured to supply air to the combustion chamber; an adjusting device capable of adjusting the amount of fuel supplied to each of the plurality of duct burners for each of the duct burners; A method for operating a crematorium comprising: each of the plurality of duct burners includes a fuel pipe and a plurality of nozzle holes provided at a plurality of positions in an axial direction of the fuel pipe and configured to inject fuel supplied from the fuel pipe downward; the plurality of duct burners are arranged at intervals in a direction intersecting the axial direction of the fuel pipe, The operating method includes: A method for operating a crematorium, comprising a step of adjusting the amount of fuel supplied to each of the plurality of duct burners by the adjusting device based on at least one of the temperatures at multiple positions within the combustion chamber, imaging data obtained by imaging the cremated subject within the combustion chamber, and the state of the cremated subject within the combustion chamber as seen through a window provided in a wall of the combustion chamber.

Images