Evaporator

Abstract

The invention provides an evaporator capable of easily adjusting the supply amount of liquid and effectively utilizing the liquid and generated vapor. The evaporator is provided with: a porous first honeycomb structure (10) having an outer peripheral wall (11) and partition walls (14) disposed on the inner side of the outer peripheral wall (11) and defining a plurality of cells (13) that serve as flow paths for a first fluid and extend from a first end surface (12a) to a second end surface (12b); a first cylindrical member (20) fitted to the outer peripheral wall (11) and having a through-hole (21) through which liquid can flow; a sheath member (30) disposed on the outside in the radial direction of the first cylindrical member (20) with a gap therebetween so as to configure a flow path (50) for the liquid; and a liquid supply device (40) that supplies liquid to the liquid flow path (50) and can adjust the supply amount thereof.

Description

TECHNICAL FIELD

[0001] The present application relates to an evaporator. BACKGROUND

[0002] Steam such as water vapor is used in various fields such as humidifiers, absorption refrigerators, fuel cells, and the like.

[0003] As one of methods of generating steam, there is a gasification method (natural evaporation method). The gasification method is capable of gasifying and evaporating a liquid by passing a gas such as air through a gas permeable membrane in which the liquid such as water is wetted.

[0004] However, the gasification method has a large air resistance of the membrane, and thus has a large load on a blower, and has a problem that it is difficult to achieve a size reduction of the blower.

[0005] Therefore, an evaporator formed of a high water absorption material such as a porous ceramic and having a plurality of through holes has been proposed (Patent Document 1). The evaporator is capable of increasing the passage amount of air sent from the blower through the plurality of through holes, and reducing the pressure loss of the blower.

[0006] PRIOR ART DOCUMENTS

[0007] PATENT DOCUMENTS

[0008] Patent Document 1: Japanese Patent Application Laid-Open No. 6-66437 SUMMARY

[0009] PROBLEMS TO BE SOLVED BY THE INVENTION

[0010] The evaporator of Patent Document 1 has a problem that it is difficult to adjust the amount of water supplied to the evaporator because the water absorbing material is attached to the periphery of the evaporator, and the water absorbing material is immersed in water filled in a tank, and water is supplied to the evaporator from the entire periphery.

[0011] Further, because the periphery of the water absorbing material is exposed, it is possible that water supplied to the tank and steam generated in the periphery of the water absorbing material are not effectively used.

[0012] Further, in order to absorb water from the entire periphery of the evaporator, it is necessary to provide the water absorbing material around the evaporator.

[0013] The present application has been achieved in order to solve the above problems, and has an object to provide an evaporator capable of easily adjusting the amount of liquid supplied and effectively using the liquid and generated steam.

[0014] MEANS FOR SOLVING THE PROBLEMS

[0015] The present inventors have intensively studied an evaporator, and as a result, have found that the above problems can be solved by providing a predetermined structure, and have completed the present application. That is, the present application can be exemplified as follows.

[0016] A vaporizer according to any one of <1> to <5> wherein

[0017] a first porous honeycomb structure having an outer peripheral wall and a partition wall provided on the inner side of the outer peripheral wall and dividing a plurality of cells which become flow paths of a first fluid extending from a first end surface to a second end surface;

[0018] a first cylindrical member fitted to the outer peripheral wall and having a through portion through which a liquid can flow;

[0019] a sheath member disposed at a spacing apart from the first cylindrical member in the radial direction so as to constitute a flow path of the liquid; and

[0020] a liquid supply device which supplies the liquid to the flow path of the liquid and is capable of adjusting the supply amount thereof.

[0021] <2> The vaporizer according to <1> wherein

[0022] a liquid supply portion is provided in at least a portion of the outer peripheral wall and the partition wall of the first honeycomb structure in the radial direction of the first honeycomb structure.

[0023] <3> The vaporizer according to <2> wherein

[0024] the liquid supply portion is a slit and / or a through hole.

[0025] <4> The vaporizer according to any one of <1> to <3> wherein

[0026] a groove portion is provided in at least a portion of the outer peripheral wall of the first honeycomb structure.

[0027] <5> The vaporizer according to any one of <1> to <4> wherein

[0028] a heating portion of the first fluid is provided on the upstream side of the first honeycomb structure with reference to the flow direction of the first fluid.

[0029] <6> The vaporizer according to any one of <1> to <5> wherein

[0030] the first honeycomb structure is a hollow honeycomb structure further having an inner peripheral wall and the partition wall is provided between the inner peripheral wall and the outer peripheral wall,

[0031] a second fluid after heating is capable of flowing through the inner peripheral wall, or a heating portion is provided in the inner peripheral wall.

[0032] <7> The vaporizer according to <6> wherein

[0033] A second honeycomb structure is arranged in the inner peripheral wall of the first honeycomb structure, and has an outer peripheral wall and a partition wall arranged on the inner side of the outer peripheral wall and dividing a plurality of cells which become flow paths of the second fluid extending from the first end surface to the second end surface.

[0034] <8> The evaporator according to <6>, wherein

[0035] A second cylindrical member is fitted in the inner peripheral wall,

[0036] The second fluid after heating can flow through the second cylindrical member, or a heating portion is provided in the second cylindrical member.

[0037] <9> The evaporator according to <8>, wherein

[0038] A second honeycomb structure is arranged in the second cylindrical member, and has an outer peripheral wall and a partition wall arranged on the inner side of the outer peripheral wall and dividing a plurality of cells which become flow paths of the second fluid extending from the first end surface to the second end surface.

[0039] <10> The evaporator according to any one of <1> to <5>, wherein

[0040] The first honeycomb structure is a hollow honeycomb structure further having an inner peripheral wall and the partition wall being arranged between the inner peripheral wall and the outer peripheral wall,

[0041] A second cylindrical member is fitted in the inner peripheral wall, and the second fluid after heating can flow through the second cylindrical member,

[0042] A first heat exchanger for heating the first fluid is provided on the upstream side of the first honeycomb structure with reference to the flow direction of the first fluid.

[0043] <11> The evaporator according to <10>, wherein

[0044] The second fluid flows in a direction opposite to the flow direction of the first fluid.

[0045] <12> The evaporator according to <10> or <11>, wherein

[0046] The aforementioned first heat exchanger comprises: a third honeycomb structure having an outer peripheral wall and a partition wall disposed on the inner side of the outer peripheral wall and dividing into a plurality of compartments forming a flow path for the second fluid extending from a first end face to a second end face; a third cylindrical member fitted into the outer peripheral wall of the third honeycomb structure; and a sheath member disposed radially outside the third cylindrical member at intervals in a manner constituting the flow path for the first fluid.

[0047] <13> An evaporator according to any one of <10> to <12>, wherein,

[0048] A second heat exchanger is provided on the downstream side of the first honeycomb structure, with the flow direction of the first fluid as a reference. The second heat exchanger is used to heat the steam generated by the first honeycomb structure.

[0049] <14> According to the evaporator described in <13>, wherein,

[0050] The aforementioned second heat exchanger comprises: a third honeycomb structure having an outer peripheral wall and a partition wall disposed on the inner side of the outer peripheral wall and dividing a plurality of compartments forming a flow path for the second fluid extending from a first end face to a second end face; a third cylindrical member fitted into the outer peripheral wall of the third honeycomb structure; and a sheath member disposed radially outward of the third cylindrical member at intervals in a manner constituting a flow path for the vapor.

[0051] <15> The evaporator according to any one of <1> to <14>, wherein,

[0052] The liquid mentioned above is water.

[0053] Invention Effects

[0054] According to the present invention, an evaporator is provided that allows for easy adjustment of the liquid supply and efficient utilization of the liquid and the generated vapor. Attached Figure Description

[0055] Figure 1A This is a cross-sectional view of the evaporator according to Embodiment 1 of the present invention, parallel to the direction in which the compartment extends.

[0056] Figure 1B yes Figure 1A A cross-sectional view of the evaporator at line a-a'.

[0057] Figure 1C This is a cross-sectional view of another evaporator according to Embodiment 1 of the present invention, orthogonal to the direction of the compartment extension.

[0058] Figure 2is a sectional view of the first honeycomb structure used in the evaporator according to Embodiment 1 of the present application, taken in a direction orthogonal to the direction in which the cells extend.

[0059] Figure 3A is a partial enlarged plan view of the surface of the outer peripheral wall of the first honeycomb structure having slits.

[0060] Figure 3B is a partial enlarged plan view of the surface of the outer peripheral wall of the first honeycomb structure having through holes.

[0061] Figure 4A is a sectional view of the evaporator according to Embodiment 2 of the present application, taken in a direction parallel to the direction in which the cells extend.

[0062] Figure 4B is a sectional view of the evaporator according to Embodiment 1 of the present application, taken in a direction orthogonal to the direction in which the cells extend. Figure 4A is a sectional view of the evaporator according to Embodiment 1 of the present application, taken in a direction orthogonal to the direction in which the cells extend.

[0063] Figure 5A is a sectional view of the evaporator according to Embodiment 3 of the present application, taken in a direction parallel to the direction in which the cells extend.

[0064] Figure 5B is a sectional view of the evaporator according to Embodiment 1 of the present application, taken in a direction orthogonal to the direction in which the cells extend. Figure 5A is a sectional view of the evaporator according to Embodiment 1 of the present application, taken in a direction orthogonal to the direction in which the cells extend.

[0065] Figure 6 is a sectional view of the evaporator according to Embodiment 4 of the present application, taken in a direction parallel to the direction in which the cells extend.

[0066] Figure 7 is a sectional view of the evaporator according to Embodiment 5 of the present application, taken in a direction parallel to the direction in which the cells extend. DETAILED DESCRIPTION

[0067] Hereinafter, embodiments of the present application will be specifically described with reference to the drawings. It should be understood that the present application is not limited to the following embodiments, and that embodiments in which modifications, improvements, and the like are appropriately made to the following embodiments based on common knowledge of those skilled in the art, without departing from the spirit of the present application, also fall within the scope of the present application.

[0068] <Embodiment 1>

[0069] Figure 1A is a sectional view of the evaporator according to Embodiment 1 of the present application, taken in a direction parallel to the direction in which the cells extend. In addition, Figure 1B is a sectional view of the evaporator according to Embodiment 1 of the present application, taken in a direction orthogonal to the direction in which the cells extend. Figure 1A is a sectional view of the evaporator according to Embodiment 1 of the present application, taken in a direction orthogonal to the direction in which the cells extend. Figure 1A is a sectional view of the evaporator according to Embodiment 1 of the present application, taken in a direction orthogonal to the direction in which the cells extend.

[0070] As Figure 1AAs shown in FIG. IB, the evaporator according to Embodiment 1 of the present application includes a first honeycomb structure 10 having a porous structure, a first cylindrical member 20, a sheath member 30, and a liquid supply device 40.

[0071] The first honeycomb structure 10 has an outer peripheral wall 11 and a partition wall 14 disposed on the inner side of the outer peripheral wall 11 and dividing a plurality of cells 13 that become flow paths of a first fluid extending from a first end surface 12a to a second end surface 12b. The first cylindrical member 20 is fitted to the outer peripheral wall 11 and has a through portion 21 through which a liquid can flow. The sheath member 30 is disposed at a spacing on the radially outer side of the first cylindrical member 20 in a manner to constitute a flow path 50 of the liquid. The liquid supply device 40 supplies the liquid to the flow path 50 of the liquid and can adjust the supply amount thereof.

[0072] The evaporator according to Embodiment 1 of the present application can easily adjust the supply amount of the liquid and can efficiently use the liquid and the generated vapor by being configured as described above.

[0073] Herein, in the present specification, the "evaporator" refers to an apparatus that can vaporize (evaporate) a liquid. Specifically, the evaporator is an apparatus that can vaporize a liquid by exchanging heat with a first fluid (gas) and absorbing heat of the liquid.

[0074] Further, in the present specification, the "porous" refers to having pores. The pores can be open pores or closed pores. The porosity is not particularly limited, and is preferably 30% or more, more preferably 40% or more, and further preferably 50% or more. The porosity is measured by a mercury porosimetry according to JIS R1655:2003. By configuring the first honeycomb structure 10 to be porous, the liquid easily permeates to the inside through the outer peripheral wall 11 and the partition wall 14, and thus the vapor can be efficiently generated. The porosity can be controlled by adjusting conditions such as the amount of pore-forming material, the amount of sintering aid, and the sintering atmosphere used when the first honeycomb structure 10 is manufactured.

[0075] Further, in the present specification, the "fitting" refers to fixing in a state of being fitted to each other. Thus, the fitting includes cases where the fitting is fixed by a method such as clearance fitting, interference fitting, and thermal compression fitting, and cases where the fitting is fixed by brazing, welding, diffusion bonding, and the like.

[0076] The first fluid flowing in the cells 13 is not particularly limited, and can be various gases. A typical first fluid is air.

[0077] Hereinafter, the structure and the like of the evaporator will be described in detail.

[0078] (First Honeycomb Structure 10)

[0079] The shape of the first honeycomb structure 10 is not particularly limited. In a cross-section orthogonal to the direction of extension of the compartment 13, except for Figure 1B In addition to the circle shown, it can also be set to an ellipse, quadrilateral or other polygons, etc.

[0080] The shape of compartment 13 is not particularly limited. In a cross section orthogonal to the direction in which compartment 13 extends, except for Figure 1B In addition to the quadrilateral shown, it can also be a circle, ellipse, triangle, hexagon or other polygons.

[0081] The outer peripheral wall 11 forms the outer surface of the first honeycomb structure 10. Therefore, from the viewpoint of improving resistance to external impacts, its thickness is preferably greater than that of the partition wall 14. Specifically, the thickness of the outer peripheral wall 11 is preferably 1.2 to 15 times the thickness of the partition wall 14, more preferably 1.5 to 10 times. By controlling the thickness of the outer peripheral wall 11 to such a degree, resistance to external impacts can be improved.

[0082] The thickness of the outer peripheral wall 11 is not particularly limited, but is preferably 0.1 to 10 mm, more preferably 0.5 to 5 mm, and even more preferably 1 to 3 mm.

[0083] The thickness of the partition wall 14 is not particularly limited, but is preferably 0.05 to 1.0 mm, more preferably 0.2 to 0.6 mm. By setting the thickness of the partition wall 14 to 0.05 mm or more, the mechanical strength of the first honeycomb structure 10 can be sufficiently guaranteed. In addition, by setting the thickness of the partition wall 14 to 1.0 mm or less, problems such as increased pressure loss due to the reduction of the opening area can be suppressed.

[0084] like Figure 1C As shown, the partition 14 in the cross-section of the first honeycomb structure 10 orthogonal to the direction of extension of the compartment 13 may have a first partition 14b extending circumferentially and a second partition 14c extending radially. With this structure, heat exchange between the first fluid flowing in the compartment 13 and the liquid supplied to the first honeycomb structure 10 can be carried out efficiently, facilitating the vaporization and evaporation of the liquid. It should be noted that... Figure 1C This is a cross-sectional view of another evaporator according to Embodiment 1 of the present invention, orthogonal to the direction in which the compartment 13 extends.

[0085] The first honeycomb structure 10 (outer peripheral wall 11 and partition wall 14) is mainly composed of ceramic. "Mainly composed of ceramic" means that ceramic accounts for more than 50% of the total mass of the components. By using ceramic, it is possible to achieve lightweight while suppressing rust and deformation.

[0086] As the ceramic, there is no particular limitation, and it is preferable to use silicon carbide (SiC) as a main component. As the ceramic using silicon carbide (SiC) as a main component, there are SiC containing Si, SiC containing (Si + Al), metal composite SiC, recrystallized SiC, Si3N4, and SiC, etc. Among them, from the viewpoint of being able to manufacture at low cost and being highly heat conductive, it is preferable to use SiC containing Si and SiC containing (Si + Al).

[0087] The cell density of the first honeycomb structure 10 in a cross section orthogonal to the direction in which the cells 13 extend (i.e., the number of cells 13 per unit area) is not particularly limited, and is preferably 4 to 320 cells / cm 2 By setting the cell density to 4 cells / cm 2 The above makes it possible to sufficiently ensure the strength of the partition wall 14, and further makes it possible to sufficiently ensure the strength of the first honeycomb structure 10 itself and the effective GSA (geometric surface area). In addition, by setting the cell density to 320 cells / cm 2 The following makes it possible to suppress an increase in pressure loss when the first fluid flows.

[0088] The isostatic strength of the first honeycomb structure 10 is not particularly limited, and is preferably 100 MPa or greater, more preferably 150 MPa or greater, and further preferably 200 MPa or greater. By setting the isostatic strength of the first honeycomb structure 10 to 100 MPa or greater, it is possible to improve the durability of the first honeycomb structure 10.

[0089] Here, the "isostatic strength" in the present specification can be measured in accordance with the measurement method of the isostatic strength prescribed in the automobile standard, i.e., JASO standard M505-87, issued by the Automobile Technology Association, an incorporated foundation.

[0090] The diameter (outer diameter) of the outer peripheral wall 11 of the first honeycomb structure 10 in a cross section orthogonal to the direction in which the cells 13 extend is not particularly limited, and is preferably 20 to 200 mm, and more preferably 30 to 150 mm. By being set to such a diameter, it is possible to promote the vaporization of the liquid. In addition, in the case where the outer peripheral wall 11 is not circular, the diameter of the largest inscribed circle inscribed in the cross-sectional shape of the outer peripheral wall 11 is set as the diameter of the outer peripheral wall 11.

[0091] The thermal conductivity of the first honeycomb structure 10 is not particularly limited, and is preferably 50 W / (m·K) or greater at 25°C, more preferably 100 to 300 W / (m·K), and further preferably 120 to 300 W / (m·K). By setting the thermal conductivity of the first honeycomb structure 10 to such a range, it is possible to efficiently transfer the heat of the first fluid to the liquid, and thus it is possible to promote the vaporization of the liquid.

[0092] In this specification, "thermal conductivity" means a value measured by a laser flash method (JIS R1611: 1997).

[0093] As shown in Figure 2 The first honeycomb structure 10 can be provided with a liquid supply portion 15 that penetrates in the radial direction of the first honeycomb structure 10 at least in part of the outer peripheral wall 11 and the partition wall 14. By being provided with such a structure, it is easy to supply liquid to the central portion of the first honeycomb structure 10, and thus it is possible to efficiently generate vapor.

[0094] Note that Figure 2 is a cross-sectional view of the first honeycomb structure 10 used in the evaporator according to Embodiment 1 of the present application, taken in a direction orthogonal to the direction in which the cells 13 extend.

[0095] As the liquid supply portion 15, there is no particular limitation, and it can be provided as a slit or a through-hole, or they can be combined. Here, a partial enlarged plan view of the surface of the outer peripheral wall 11 of the first honeycomb structure 10 having a slit 15a is shown in Figure 3A , and a partial enlarged plan view of the surface of the outer peripheral wall 11 of the first honeycomb structure 10 having a through-hole 15b is shown in Figure 3B .

[0096] Further, in this specification, "slit 15a" means a thin gap (clearance). In addition, "through-hole 15b" means a hole that penetrates.

[0097] The number and size of the slits 15a and the through-holes 15b are appropriately set according to the required characteristics, and are not particularly limited.

[0098] The slits 15a and the through-holes 15b can be formed by a publicly known method such as machining.

[0099] In addition, the first honeycomb structure 10 can be provided with a groove portion at least in part of the outer peripheral wall 11. By providing a groove portion, it is possible to increase the contact area with liquid in the outer peripheral wall 11, and thus it is easy to supply liquid to the central portion of the first honeycomb structure 10, and it is possible to efficiently generate vapor.

[0100] The evaporator according to Embodiment 1 of the present application can also be provided with a heating portion of the first fluid on the upstream side of the first honeycomb structure 10 with reference to the flow direction of the first fluid. By providing a heating portion of the first fluid at such a position, it is possible to efficiently generate vapor.

[0101] (Method for manufacturing first honeycomb structure 10)

[0102] The first honeycomb structure 10 can be manufactured in a method known in the technical field. For example, the first honeycomb structure 10 can be manufactured in a method described below.

[0103] First, a ceramic powder-containing clay is extrusion-molded into a desired shape to produce a honeycomb molded body. At this time, by selecting an appropriate die and jig, the thickness of the peripheral wall 11 and the partition wall 14, the shape of the cells 13, the cell density, and the like can be controlled. For example, in the case of manufacturing a honeycomb molded body in which a SiC composite material containing Si impregnated therein is a main component, a predetermined amount of SiC powder can be mixed with a binder and water or an organic solvent, and the resulting mixture can be kneaded to produce a clay, which is molded to obtain a honeycomb molded body of a desired shape.

[0104] Next, after the honeycomb molded body is dried, a slit 15a and a through-hole 15b are formed by machining or the like as needed.

[0105] Next, in an inert gas under reduced pressure or in a vacuum, Si is impregnated in the honeycomb molded body and fired, whereby the first honeycomb structure 10 can be obtained.

[0106] Further, in the above, a case in which the honeycomb molded body is subjected to processing to provide the slit 15a and the through-hole 15b is described, but the processing can be performed after the honeycomb molded body is fired.

[0107] (First cylindrical member 20)

[0108] The first cylindrical member 20 is fitted to the peripheral wall 11 of the first honeycomb structure 10. That is, the first cylindrical member 20 is a cylindrical member that can house the first honeycomb structure 10 inside. The fitting can be either of direct and indirect.

[0109] It is preferable that the axial direction of the first cylindrical member 20 coincide with the axial direction of the first honeycomb structure 10, and that the central axis of the first cylindrical member 20 coincide with the central axis of the first honeycomb structure 10. In addition, the central position of the axial direction of the first cylindrical member 20 can also coincide with the central position of the axial direction of the first honeycomb structure 10. Furthermore, the diameter (outer diameter and inner diameter) of the first cylindrical member 20 can be the same throughout the axial direction, but can also be reduced in diameter or expanded in diameter at least in part (for example, at both ends of the axial direction, and the like).

[0110] The first cylindrical member 20 has a through portion 21 through which a liquid can flow. By providing the through portion 21, a liquid supplied from a liquid supply device 40 can be supplied to the first honeycomb structure 10.

[0111] The position at which the through portion 21 is provided can be a position at which the peripheral wall 11 of the first honeycomb structure 10 is exposed, and can be provided, for example, at Figure 1Athe axial center portion.

[0112] The shape of the through portion 21 is not particularly limited and can be circular, elliptical, polygonal, slit-shaped, or the like.

[0113] The size of the through portion 21 is appropriately adjusted according to the shape of the through portion 21 and is not particularly limited.

[0114] The number of the through portions 21 is appropriately adjusted according to the size, shape, and the like of the through portions 21 and is not particularly limited.

[0115] The through portions 21 can be formed by a publicly known method such as machining.

[0116] The material of the first cylindrical member 20 is not particularly limited, but is preferably metal from the viewpoint of manufacturability. In addition, if the first cylindrical member 20 is made of metal, it is also excellent in that welding with the sheath member 30 described later can be easily performed. As the material of the first cylindrical member 20, for example, stainless steel, titanium alloy, copper alloy, aluminum alloy, brass, or the like can be used. Among them, stainless steel is preferable based on the reasons that durability reliability is high and inexpensive.

[0117] The thickness of the first cylindrical member 20 is not particularly limited, but is preferably 0.1 mm or more, more preferably 0.3 mm or more, and further preferably 0.5 mm or more. By setting the thickness of the first cylindrical member 20 to 0.1 mm or more, it is possible to ensure durability reliability. In addition, the thickness of the first cylindrical member 20 is preferably 10 mm or less, more preferably 5 mm or less, and further preferably 3 mm or less. By setting the thickness of the first cylindrical member 20 to 10 mm or less, it is possible to achieve weight reduction of the evaporator.

[0118] (Sheath Member 30)

[0119] The sheath member 30 is disposed at the radially outer side of the first cylindrical member 20 at intervals in a manner of constituting the flow path 50 of the liquid.

[0120] It is preferable that the axial direction of the sheath member 30 coincides with the axial direction of the first honeycomb structure 10, and the central axis of the sheath member 30 coincides with the central axis of the first honeycomb structure 10.

[0121] The sheath member 30 preferably has a supply port 31 for supplying the liquid to the flow path 50 of the liquid. The position of the supply port 31 can be any position as long as it can be connected to the flow path 50 of the liquid, and for example, can be provided at the upstream side end portion or the downstream side end portion of the sheath member 30. Figure 1A the axial center portion.

[0122] It is preferable that the sheath member 30 is disposed in a manner that the inner peripheral surface of the upstream side end portion and the downstream side end portion directly or indirectly contacts the outer peripheral surface of the first cylindrical member 20.

[0123] As a method of fixing the inner peripheral surface of the upstream side end portion and the downstream side end portion of the sheath member 30 to the outer peripheral surface of the first cylindrical member 20, there is no particular limitation, and in addition to a method of fixing by fitting through a gap, interference fitting, heat press fitting, or the like, soldering, welding, diffusion bonding, or the like can be used.

[0124] The diameter (outer diameter and inner diameter) of the sheath member 30 can be the same throughout the axial direction, but can be reduced in diameter or expanded in diameter at least in part (for example, the axial central portion, the axial both end portions, or the like).

[0125] As the material of the sheath member 30, there is no particular limitation, and the same materials as those described with respect to the material of the above-described first cylindrical member 20 can be cited.

[0126] As the thickness of the sheath member 30, there is no particular limitation, and the same thicknesses as those described with respect to the thickness of the above-described first cylindrical member 20 can be cited.

[0127] (Liquid supply device 40)

[0128] The liquid supply device 40 is a device that supplies liquid to the flow path 50 of the liquid and can adjust the amount of supply thereof. As the liquid supply device 40, there is no particular limitation as long as it has such a function, and a commercially available product can be used.

[0129] The liquid supply device 40 is connected to the supply port 31 of the sheath member 30 through a supply tube 41 or the like.

[0130] As the liquid supplied by the liquid supply device 40, it is appropriately selected according to the purpose of the evaporator, and there is no particular limitation, and in the case of an evaporator for generating water vapor, the liquid is water.

[0131] (Method of manufacturing evaporator)

[0132] The evaporator according to Embodiment 1 of the present application can use the above-described respective constituent members and is manufactured in accordance with a method known in the technical field. For example, the evaporator can be manufactured in accordance with the following described method.

[0133] First, the first honeycomb structure 10 is inserted into the first cylindrical member 20, and the first cylindrical member 20 is fitted to the outer peripheral wall 11 of the first honeycomb structure 10. Next, the sheath member 30 is disposed and fixed on the radially outer side of the first cylindrical member 20. Next, the sheath member 30 and the liquid supply device 40 are connected through the supply tube 41.

[0134] In addition, the order of the disposition and the fixing (fitting) of the respective members is not limited to the above-described description, and can be appropriately changed within a range in which it can be manufactured. In addition, the fixing (fitting) method can use the above-described method.

[0135] The evaporator according to Embodiment 1 of the present invention uses a liquid supply device 40, so the liquid supply amount can be easily adjusted. In addition, the liquid supplied to the liquid flow path 50 can be efficiently supplied to the first honeycomb structure 10 through the through portion 21 of the first cylindrical member 20, so the liquid and the generated steam can be effectively utilized.

[0136] <Implementation Method 2>

[0137] Figure 4A This is a cross-sectional view of the evaporator according to Embodiment 2 of the present invention, parallel to the direction in which the compartment extends. Additionally, Figure 4B yes Figure 4A A cross-sectional view of the heat exchanger at line b-b'. Figure 4A (A cross-sectional view of the evaporator orthogonal to the direction in which the compartment extends).

[0138] like Figure 4A As shown in 4B, the evaporator according to Embodiment 2 of the present invention differs from the evaporator according to Embodiment 1 of the present invention in that the first honeycomb structure 10 is a hollow honeycomb structure 10a that also has an inner peripheral wall 16 and a partition wall 14 disposed between the inner peripheral wall 16 and the outer peripheral wall 11, and also has a second cylindrical member 60 fitted into the inner peripheral wall 16. Furthermore, in Figure 4A An example with a second cylindrical member 60 is shown in 4B, but it is also possible to have a second cylindrical member 60 without it.

[0139] Furthermore, the constituent elements having the same reference numerals as those appearing in the description of the evaporator according to Embodiment 1 of the present invention are the same as the constituent elements of the evaporator according to Embodiment 2 of the present invention. Therefore, detailed descriptions of the same constituent elements are omitted, while descriptions of different constituent elements are provided.

[0140] Without the second cylindrical component 60, the heated second fluid can flow within the inner peripheral wall 16 or a heating element can be provided within the inner peripheral wall 16. By allowing the heated second fluid to flow within the inner peripheral wall 16, the heat of the second fluid can be transferred to the hollow honeycomb structure 10a, thereby improving the steam generation efficiency. Similarly, by providing a heating element within the inner peripheral wall 16, the heat generated by the heating element can be transferred to the hollow honeycomb structure 10a, thereby improving the steam generation efficiency.

[0141] In addition, in the case where the second tubular member 60 is provided, the second fluid after heating can flow through the inside of the second tubular member 60 or a heating portion can be provided in the second tubular member 60. By causing the second fluid after heating to flow through the inside of the second tubular member 60, the heat of the second fluid can be transmitted to the honeycomb structure 10a of the hollow type via the second tubular member 60, and thus the generation efficiency of the vapor can be improved. Similarly, by providing the heating portion in the second tubular member 60, the heat generated by the heating portion can be transmitted to the honeycomb structure 10a of the hollow type via the second tubular member 60, and thus the generation efficiency of the vapor can be improved.

[0142] The second fluid after heating is not particularly limited, and various liquids and gases can be used. As examples of the second fluid after heating, exhaust gas emitted from an internal combustion engine, and the like can be given.

[0143] The heating portion is not particularly limited, and various heaters and the like can be used.

[0144] The thickness of the inner peripheral wall 16 in the honeycomb structure 10a of the hollow type is not particularly limited, and is preferably 0.1 mm to 10 mm, more preferably 0.5 mm to 5 mm, and further preferably 1 mm to 3 mm from the viewpoint of ensuring the resistance to thermal stress.

[0145] In addition, the diameter (inner diameter) of the inner peripheral wall 16 of the honeycomb structure 10a of the hollow type in a cross section orthogonal to the direction in which the cells 13 extend is not particularly limited, and is preferably 1 mm to 50 mm, and more preferably 2 mm to 30 mm. In the case where the cross-sectional shape of the inner peripheral wall 16 is not circular, the diameter of the largest inscribed circle inscribed in the cross-sectional shape of the inner peripheral wall 16 is set as the diameter of the inner peripheral wall 16.

[0146] The honeycomb structure 10a of the hollow type can be manufactured in the same manner as the first honeycomb structure 10 by a method known in the technical field. Specifically, in the case where a clay containing a ceramic powder is extrusion-molded, a honeycomb molded body of the hollow type can be produced by selecting an appropriate die and jig, and thereafter the same manufacturing method as the first honeycomb structure 10 can be used.

[0147] The second tubular member 60 is fitted to the inner peripheral wall 16 of the honeycomb structure 10a of the hollow type. That is, the second tubular member 60 is a tubular member that can be inserted into the inner peripheral wall 16 of the honeycomb structure 10a of the hollow type. The fitting can be either direct or indirect.

[0148] It is preferable that the axial direction of the second tubular member 60 coincide with the axial direction of the hollow honeycomb structure 10a, and that the central axis of the second tubular member 60 coincide with the central axis of the hollow honeycomb structure 10a. In addition, it is preferable that the central position of the axial direction of the second tubular member 60 coincide with the central position of the axial direction of the hollow honeycomb structure 10a.

[0149] The diameter (outer diameter and inner diameter) of the second tubular member 60 can be the same throughout the axial direction, but can be reduced or enlarged at least in a portion (for example, the axial central portion, the axial both end portions, or the like).

[0150] As the material of the second tubular member 60, there is no particular limitation, and the same materials as those described with respect to the material of the first tubular member 20 can be cited.

[0151] As the thickness of the second tubular member 60, there is no particular limitation, and the same thicknesses as those described with respect to the thickness of the first tubular member 20 can be cited.

[0152] The evaporator according to Embodiment 2 of the present application can be manufactured using the above-described respective constituent members and in accordance with a method known in the technical field.

[0153] First, the hollow honeycomb structure 10a is inserted into the first tubular member 20, and the first tubular member 20 is fitted to the outer peripheral wall 11 of the hollow honeycomb structure 10a. Next, the second tubular member 60 is inserted into the inside (hollow region) of the inner peripheral wall 16 of the hollow honeycomb structure 10a, and the second tubular member 60 is fitted to the surface of the inner peripheral wall 16 of the hollow honeycomb structure 10a. Subsequently, the sheath member 30 is arranged and fixed to the radially outer side of the first tubular member 20. Subsequently, the sheath member 30 and the liquid supply device 40 are connected by the supply pipe 41.

[0154] In addition, the order of arrangement and fixation (fitting) of the respective members is not limited to the above-described description, and can be appropriately changed within a range that can be manufactured. In addition, the method of fixation (fitting) can be the above-described method.

[0155] The evaporator according to Embodiment 2 of the present application can achieve the same effects as the evaporator according to Embodiment 1 of the present application. In addition, the evaporator according to Embodiment 2 of the present application can circulate the heated second fluid inside the inner peripheral wall 16 or the second tubular member 60, or can provide a heating portion inside the inner peripheral wall 16 or the second tubular member 60, and thus can improve the generation efficiency of vapor.

[0156] <Embodiment 3>

[0157] Figure 5AThis is a cross-sectional view of the evaporator according to Embodiment 3 of the present invention, parallel to the direction in which the compartment extends. Additionally, Figure 5B yes Figure 5A A cross-sectional view of the heat exchanger at line c-c'. Figure 5A (A cross-sectional view of the evaporator orthogonal to the direction in which the compartment extends).

[0158] like Figure 5A As shown in Figure 5B, the evaporator according to Embodiment 3 of the present invention has a second honeycomb structure 10b disposed within the second cylindrical member 60. The second honeycomb structure 10b has an outer peripheral wall 11a and partition walls 14a. The partition walls 14a are disposed on the inner side of the outer peripheral wall 11a and divide the space into multiple compartments 13a forming a flow path for the second fluid extending from the first end face 12a to the second end face 12b. This differs from the evaporator according to Embodiment 2 of the present invention (particularly in that the heated second fluid can flow within the second cylindrical member). By disposing the second honeycomb structure 10b within the second cylindrical member 60, the heat of the second fluid flowing within the second honeycomb structure 10b can be efficiently transferred to the hollow honeycomb structure 10a via the second honeycomb structure 10b, thus further improving the steam generation efficiency.

[0159] Furthermore, although not shown in the figure, the second honeycomb structure 10b can also be disposed within the inner peripheral wall 16 of the hollow honeycomb structure 10a without being separated from the second cylindrical component. With such a structure, the same effect as described above can be obtained.

[0160] It should be noted that the constituent elements having the same reference numerals as those appearing in the description of the evaporators according to Embodiments 1 and 2 of the present invention are the same as the constituent elements of the evaporator according to Embodiment 3 of the present invention. Therefore, detailed descriptions of the same constituent elements are omitted, while descriptions of different constituent elements are provided.

[0161] The diameter (outer diameter) of the outer peripheral wall 11a of the second honeycomb structure 10b in the cross section orthogonal to the direction of extension of the compartment 13a can be adjusted according to the inner diameter of the second cylindrical component 60, without any particular limitation.

[0162] Further, the second honeycomb structure 10b can have the same other features as the first honeycomb structure 10. However, the second honeycomb structure 10b is different from the first honeycomb structure 10 in that it is preferably dense from the viewpoint of thermal conductivity. Specifically, the porosity of the peripheral wall 11a and the partition wall 14a of the second honeycomb structure 10b is preferably 10% or less, more preferably 5% or less, and further preferably 3% or less. Further, the porosity of the peripheral wall 11a and the partition wall 14a of the second honeycomb structure 10b can be 0%. By setting the porosity of the peripheral wall 11a and the partition wall 14a of the second honeycomb structure 10b to 10% or less, the thermal conductivity can be improved.

[0163] Further, the second honeycomb structure 10b can be manufactured by the same method as the first honeycomb structure 10.

[0164] The evaporator according to Embodiment 3 of the present application can be manufactured by the same method as the evaporator according to Embodiment 2 of the present application, except that the second honeycomb structure 10b is inserted into the second cylindrical member 60 and the second cylindrical member 60 is fitted to the peripheral wall 11a of the second honeycomb structure 10b.

[0165] The evaporator according to Embodiment 3 of the present application can achieve the same effects as the evaporators according to Embodiments 1 and 2 of the present application. Further, the evaporator according to Embodiment 3 of the present application has the second honeycomb structure 10b disposed in the second cylindrical member 60, and thus heat of the second fluid flowing in the second honeycomb structure 10b can be efficiently transferred to the hollow-type honeycomb structure 10a via the second honeycomb structure 10b, and as a result, the generation efficiency of the vapor can be further improved.

[0166] <Embodiment 4>

[0167] Figure 6 FIG. 4 is a cross-sectional view of the evaporator according to Embodiment 4 of the present application, taken in a direction parallel to the direction in which the cells extend.

[0168] As shown in FIG. 4, the evaporator according to Embodiment 4 of the present application includes a first honeycomb structure 10, a second honeycomb structure 10b, a first cylindrical member 50, a second cylindrical member 60, and a heat exchanger 70. Figure 6As shown, the evaporator according to Embodiment 4 of the present application is different from the evaporator according to Embodiment 2 of the present application in that a first heat exchanger 100 for heating the first fluid is provided on the upstream side of the first honeycomb structure 10 (the hollow honeycomb structure 10a) with respect to the flow direction of the first fluid. By providing the first heat exchanger 100 on the upstream side of the first honeycomb structure 10 with respect to the flow direction of the first fluid, the first fluid supplied to the evaporator can be heated in advance, and thus the generation efficiency of the vapor can be improved. In addition, the first fluid does not need to be heated by a heater or the like, and the heat of the second fluid such as exhaust gas can be utilized in the first heat exchanger 100, and thus an energy saving effect can also be obtained.

[0169] Note that the evaporator according to Embodiment 4 of the present application is the same as the evaporator according to Embodiment 2 of the present application except that the first heat exchanger 100 is provided on the upstream side of the first honeycomb structure 10 with respect to the flow direction of the first fluid, and thus only the different constituent element (the first heat exchanger 100) will be described.

[0170] As the first heat exchanger 100, there is no particular limitation, and it can include a third honeycomb structure 110 having an outer peripheral wall 111 and a partition wall 114 provided on the inner side of the outer peripheral wall 111 and dividing a plurality of cells 113 that become flow paths of the second fluid extending from a first end surface 112a to a second end surface 112b, a third cylindrical member 120 fitted to the outer peripheral wall 111 of the third honeycomb structure 110, and a sheath member 130 disposed at intervals on the radially outer side of the third cylindrical member 120 in a manner that constitutes a flow path of the first fluid. If the first heat exchanger 100 has such a structure, heat exchange between the first fluid and the second fluid can be efficiently performed.

[0171] The third honeycomb structure 110 has the same features as the second honeycomb structure 10b described above, and thus detailed description will be omitted.

[0172] The downstream end of the third cylindrical member 120 can be directly connected to the upstream end of the second cylindrical member 60 or indirectly connected via another member such as a flange. Similarly, the downstream end of the sheath member 130 can be directly connected to the upstream end of the first cylindrical member 20 or indirectly connected via another member such as a flange.

[0173] The third cylindrical member 120 is fitted to the outer peripheral wall 111 of the third honeycomb structure 110. That is, the third cylindrical member 120 is a cylindrical member that can accommodate the third honeycomb structure 110. The fitting can be either direct or indirect.

[0174] The axial direction of the third tubular member 120 preferably coincides with the axial direction of the third honeycomb structure 110, and the central axis of the third tubular member 120 preferably coincides with the central axis of the third honeycomb structure 110. In addition, the central position of the axial direction of the third tubular member 120 preferably coincides with the central position of the axial direction of the third honeycomb structure 110.

[0175] The diameter (outer diameter and inner diameter) of the third tubular member 120 can be uniform in the entire axial direction, but can be reduced in diameter or expanded in diameter at least in a portion (for example, an axial central portion, axial end portions, or the like).

[0176] As the material of the third tubular member 120, there is no particular limitation, and the same materials as those described with respect to the material of the first tubular member 20 can be mentioned.

[0177] As the thickness of the third tubular member 120, there is no particular limitation, and the same thicknesses as those described with respect to the thickness of the first tubular member 20 can be mentioned.

[0178] The sheath member 130 is disposed at the radially outer side of the third tubular member 120 at intervals in a manner to constitute a flow path of the first fluid.

[0179] The axial direction of the sheath member 130 preferably coincides with the axial direction of the third honeycomb structure 110, and the central axis of the sheath member 130 preferably coincides with the central axis of the third honeycomb structure 110.

[0180] The sheath member 130 preferably has a supply port 131 for supplying the first fluid to the flow path of the first fluid. The position of the supply port 131 is not particularly limited as long as it is on the upstream side from the first end surface 112a of the third honeycomb structure 110.

[0181] The sheath member 130 is preferably disposed in a manner that the inner peripheral surface of the upstream end portion directly or indirectly contacts the outer peripheral surface of the third tubular member 120.

[0182] As a method of fixing the inner peripheral surface of the upstream end portion of the sheath member 130 to the outer peripheral surface of the third tubular member 120, there is no particular limitation, and in addition to a method of fixing by fitting through a gap, interference fitting, thermal press fitting, or the like, soldering, welding, diffusion bonding, or the like can be used.

[0183] The diameter (outer diameter and inner diameter) of the sheath member 130 can be uniform in the entire axial direction, but can be reduced in diameter or expanded in diameter at least in a portion (for example, an axial central portion, axial end portions, or the like).

[0184] As the material of the sheath member 130, there is no particular limitation, and the same materials as those described with respect to the material of the first tubular member 20 can be mentioned.

[0185] The thickness of the sheath member 130 is not particularly limited, and the same thickness as that described above with respect to the thickness of the first cylindrical member 20 can be given.

[0186] The flow direction of the first fluid and the second fluid in the first heat exchanger 100 is not particularly limited, but it is preferable that the second fluid flow in the opposite direction to the flow direction of the first fluid. By causing the second fluid to flow in the opposite direction to the first fluid, it is easy to transfer the heat of the second fluid to the first fluid, and thus the heat exchange efficiency is improved.

[0187] The first heat exchanger 100 can be manufactured by inserting the third honeycomb structure 110 into the third cylindrical member 120, fitting the third cylindrical member 120 to the outer peripheral wall 111 of the third honeycomb structure 110, and then arranging and fixing the sheath member 130 to the radially outer side of the third cylindrical member 120.

[0188] In addition, the order of arrangement and fixation (fitting) of each member is not limited to that described above, and can be appropriately changed within a range that enables manufacturing. In addition, the method of fixation (fitting) can be appropriately changed.

[0189] The evaporator according to Embodiment 4 of the present application can achieve the same effects as the evaporators according to Embodiments 1 to 3 of the present application. In addition, the evaporator according to Embodiment 4 of the present application is provided with the first heat exchanger 100 on the upstream side of the first honeycomb structure 10 with respect to the flow direction of the first fluid, and thus it is possible to preheat the first fluid supplied to the evaporator, and thus it is possible to improve the generation efficiency of the vapor. In addition, it is not necessary to use a heater or the like as a heating portion to heat the first fluid, and it is possible to use the heat of the second fluid such as exhaust gas in the first heat exchanger 100, and thus it is possible to achieve an energy saving effect.

[0190] <Embodiment 5>

[0191] Figure 7 is a sectional view of the evaporator according to Embodiment 5 of the present application, taken in a direction parallel to the direction in which the cells extend.

[0192] As Figure 7As shown, the evaporator according to Embodiment 5 of the present application is different from the evaporator according to Embodiment 4 of the present application in that a second heat exchanger 200 for heating the vapor generated by the first honeycomb structure 10 is provided on the downstream side of the first honeycomb structure 10 (the hollow honeycomb structure 10a) with respect to the flow direction of the first fluid. By providing the second heat exchanger 200 on the downstream side of the first honeycomb structure 10 with respect to the flow direction of the first fluid, the vapor generated by the first honeycomb structure 10 can be heated, and thus the heated vapor can be used for various purposes as required.

[0193] Note that the evaporator according to Embodiment 5 of the present application is the same as the evaporator according to Embodiment 4 of the present application except that the second heat exchanger 200 is provided on the downstream side of the first honeycomb structure 10 with respect to the flow direction of the first fluid, and thus only the different constituent element (the second heat exchanger 200) will be described.

[0194] As the second heat exchanger 200, there is no particular limitation, and a heat exchanger having the same structure as the first heat exchanger 100 can be used. That is, the second heat exchanger 200 can include a third honeycomb structure 210 having an outer peripheral wall 211 and a partition wall 214 provided on the inner side of the outer peripheral wall 211 and dividing a plurality of cells 213 that become flow paths of the second fluid extending from a first end surface 212a to a second end surface 212b, a third cylindrical member 220 fitted to the outer peripheral wall 211 of the third honeycomb structure 210, and a sheath member 230 disposed at intervals on the radially outer side of the third cylindrical member 220 in a manner that constitutes a flow path of the vapor. If the second heat exchanger 200 has such a structure, heat exchange between the second fluid and the vapor can be efficiently performed.

[0195] The third honeycomb structure 210, the third cylindrical member 220, and the sheath member 230 that constitute the second heat exchanger 200 can use the same members as the third honeycomb structure 110, the third cylindrical member 120, and the sheath member 130 that constitute the first heat exchanger 100. However, for the third cylindrical member 220, a vapor discharge port 231 is provided instead of the supply port 131.

[0196] In addition, the manufacturing method of the second heat exchanger 200 can be the same as the manufacturing method of the first heat exchanger 100.

[0197] The evaporator according to Embodiment 5 of the present application can achieve the same effects as the evaporators according to Embodiments 1 to 4 of the present application. In addition, the evaporator according to Embodiment 5 of the present application is provided with the second heat exchanger 200 on the downstream side of the first honeycomb structure 10 with respect to the flow direction of the first fluid, and thus can heat the first fluid supplied to the evaporator, and therefore can heat the vapor generated by the first honeycomb structure 10, and thus can use the heated vapor for various purposes as required.

[0198] Explanation of Symbols

[0199] 10 - first honeycomb structure; 10a - honeycomb structure of hollow type; 10b - second honeycomb structure; 11, 11a - outer peripheral wall; 12a - first end face; 12b - second end face; 13, 13a - cell; 14, 14a - partition wall; 14b - first partition wall; 14c - second partition wall; 15 - liquid supply portion; 15a - slit; 15b - through hole; 16 - inner peripheral wall; 20 - first cylindrical member; 21 - through portion; 30 - sheath member; 31 - supply port; 40 - liquid supply device; 41 - supply pipe; 50 - flow path of liquid; 60 - second cylindrical member; 100 - first heat exchanger; 110, 210 - third honeycomb structure; 111, 211 - outer peripheral wall; 112a, 212a - first end face; 112b, 212b - second end face; 113, 213 - cell; 114, 214 - partition wall; 120, 220 - third cylindrical member; 130, 230 - sheath member; 131 - supply port; 231 - discharge port; 200 - second heat exchanger.

Claims

1. An evaporator, characterized in that, have: A porous first honeycomb structure having an outer peripheral wall and a partition wall disposed on the inner side of the outer peripheral wall and dividing into a plurality of compartments forming a flow path for a first fluid extending from a first end face to a second end face. The first cylindrical component is fitted into the aforementioned outer peripheral wall and has a through portion through which liquid can flow; Sheathing components, which are arranged radially outward from the first cylindrical component at intervals in a manner that constitutes a flow path for the liquid; and A liquid supply device that supplies the liquid to the flow path of the liquid and is capable of adjusting the supply amount.

2. The evaporator according to claim 1, characterized in that, At least a portion of the outer peripheral wall and the partition wall of the first honeycomb structure are provided with a liquid supply section that extends radially through the first honeycomb structure.

3. The evaporator according to claim 2, characterized in that, The aforementioned liquid supply section is a slit and / or a through hole.

4. The evaporator according to claim 1, characterized in that, At least a portion of the outer peripheral wall of the first honeycomb structure is provided with a groove.

5. The evaporator according to any one of claims 1 to 4, characterized in that, Based on the flow direction of the first fluid, a heating section for the first fluid is provided on the upstream side of the first honeycomb structure.

6. The evaporator according to any one of claims 1 to 4, characterized in that, The aforementioned first honeycomb structure is a hollow honeycomb structure that also has an inner peripheral wall and a partition wall disposed between the inner peripheral wall and the outer peripheral wall. The heated second fluid can flow within the aforementioned inner peripheral wall, or a heating element can be provided within the aforementioned inner peripheral wall.

7. The evaporator according to claim 6, characterized in that, A second honeycomb structure is disposed within the inner peripheral wall of the first honeycomb structure. The second honeycomb structure has an outer peripheral wall and a partition wall. The partition wall is disposed on the inner side of the outer peripheral wall and divides into a plurality of compartments that form a flow path for the second fluid extending from the first end face to the second end face.

8. The evaporator according to claim 6, characterized in that, It also has a second cylindrical component that fits into the aforementioned inner peripheral wall. The heated second fluid can flow within the second cylindrical component, or a heating element can be provided within the second cylindrical component.

9. The evaporator according to claim 8, characterized in that, A second honeycomb structure is disposed within the second cylindrical component. The second honeycomb structure has an outer peripheral wall and a partition wall. The partition wall is disposed on the inner side of the outer peripheral wall and divides into a plurality of compartments that form a flow path for the second fluid, extending from the first end face to the second end face.

10. The evaporator according to any one of claims 1 to 4, characterized in that, The aforementioned first honeycomb structure is a hollow honeycomb structure that also has an inner peripheral wall and a partition wall disposed between the inner peripheral wall and the outer peripheral wall. It also includes a second cylindrical component fitted into the aforementioned inner peripheral wall, within which the heated second fluid can flow. Based on the flow direction of the first fluid, a first heat exchanger for heating the first fluid is provided on the upstream side of the first honeycomb structure.

11. The evaporator according to claim 10, characterized in that, The second fluid flows in a direction opposite to that of the first fluid.

12. The evaporator according to claim 10, characterized in that, The aforementioned first heat exchanger includes: The third honeycomb structure has an outer peripheral wall and a partition wall, the partition wall being disposed on the inner side of the outer peripheral wall and dividing into multiple compartments that form a flow path for the second fluid extending from the first end face to the second end face. The third cylindrical component is fitted into the outer peripheral wall of the third honeycomb structure; as well as Sheathing components are arranged radially outward of the third cylindrical component at intervals in a manner that constitutes the flow path of the first fluid.

13. The evaporator according to claim 10, characterized in that, A second heat exchanger is provided on the downstream side of the first honeycomb structure, with the flow direction of the first fluid as a reference. The second heat exchanger is used to heat the steam generated by the first honeycomb structure.

14. The evaporator according to claim 13, characterized in that, The aforementioned second heat exchanger includes: The third honeycomb structure has an outer peripheral wall and a partition wall, the partition wall being disposed on the inner side of the outer peripheral wall and dividing into multiple compartments that form a flow path for the second fluid extending from the first end face to the second end face. The third cylindrical component is fitted into the aforementioned outer peripheral wall of the third honeycomb structure; and Sheathing components are arranged radially outside the third cylindrical component at intervals in a manner that constitutes the flow path of the aforementioned vapor.

15. The evaporator according to any one of claims 1 to 4, characterized in that, The liquid mentioned above is water.

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