Heater

Abstract

To provide a heater capable of miniaturizing and improving heating efficiency of a fluid.SOLUTION: The heater according to the embodiment contacts the fluid. The heater includes a base portion extending in a first direction and a heat generating portion provided on the base portion. The base portion includes a plurality of first portions having a plate shape, extending in the first direction, and arranged at predetermined intervals in a second direction intersecting the first direction, a second portion having a plate shape, extending in the first direction, and intersecting an end portion of each of the plurality of first portions in the second direction, and a third portion having a plate shape, extending in the first direction, and intersecting an end portion of the second portion on a side opposite to the first portion side. The heat generator is provided on a side of the first portion opposite to the second portion side.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] FIELD OF THE INVENTION An embodiment of the present invention relates to a heater. [Background technology]

[0002] There are heaters that heat fluids such as air and water. Heaters that heat fluids are provided, for example, in heating devices that heat air and in hot water devices that heat water.

[0003] One such heater proposed is a PTC (Positive Temperature Coefficient) heater. When a current flows through a PTC heater, the temperature of the PTC heater rises in accordance with the magnitude of the current. When the temperature of the PTC heater exceeds the Curie temperature, the resistance of the PTC heater increases, making it difficult for current to flow through the PTC heater, and the temperature rise of the PTC heater is suppressed. When the temperature of the PTC heater drops due to the suppression of the temperature rise of the PTC heater, current flows more easily through the PTC heater, and the temperature of the PTC heater rises again. Therefore, the use of a PTC heater allows for self-control of the heating temperature.

[0004] However, the heat generated in the PTC heater is transferred to the fluid via heat exchange fins, which are made up of multiple plates arranged three-dimensionally, making it difficult to miniaturize the device when using a PTC heater.

[0005] Additionally, heaters that use thermal conduction to heat solids such as toner have been proposed. Such heaters have a flat base that extends in one direction and a heating element provided on one side of the base. Therefore, if a heater with a flat base is used to heat a fluid, it can be made smaller. However, when a heater having a flat base is used to heat a fluid, there is a problem in that it becomes difficult to improve the efficiency of heating the fluid.

[0006] Therefore, there has been a demand for the development of a heater that can be made smaller and has improved fluid heating efficiency. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Publication No. 2020-059368 [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-197971 Summary of the Invention [Problem to be solved by the invention]

[0008] The problem to be solved by the present invention is to provide a heater that can be made smaller and that can improve the efficiency of heating a fluid. [Means for solving the problem]

[0009] A heater according to an embodiment contacts a fluid. The heater includes a base extending in a first direction and a heat generating portion provided on the base. The base has a plurality of plate-shaped first portions extending in the first direction and arranged at predetermined intervals in a second direction intersecting the first direction; a plate-shaped second portion extending in the first direction and intersecting with ends of each of the plurality of first portions in the second direction; and a plate-shaped third portion extending in the first direction and intersecting with ends of the second portions on the side opposite the first portions. The heat generating portion is provided on the side of the first portions opposite the second portions. [Effects of the Invention]

[0010] According to an embodiment of the present invention, it is possible to provide a heater that can be made smaller and that can improve the efficiency of heating a fluid. [Brief explanation of the drawings]

[0011] [Figure 1]FIG. 1 is a schematic perspective view illustrating a heater according to an embodiment of the present invention. [Figure 2] 2 is a schematic plan view of the heater in FIG. 1 as viewed from the Z direction. [Figure 3] 2 is a schematic side view of the heater in FIG. 1 as viewed from the X direction. FIG. [Figure 4] FIG. 2 is a schematic perspective view illustrating a base portion. [Figure 5] 10A and 10B are schematic diagrams illustrating the effects of a heater according to a comparative example. [Figure 6] 10A and 10B are schematic diagrams illustrating the effects of a heater. [Figure 7] 10A and 10B are schematic diagrams illustrating the effects of a heater. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, an embodiment will be illustrated with reference to the drawings. Note that in each drawing, similar components are assigned the same reference numerals, and detailed description will be omitted as appropriate. In addition, arrows X, Y, and Z in each drawing represent directions that are perpendicular to each other. For example, the X direction (corresponding to an example of a first direction) can be the longitudinal direction (length direction) of the heater 1. For example, the Y direction (corresponding to an example of a second direction) can be the lateral direction (width direction) of the heater 1. For example, the Z direction (corresponding to an example of a third direction) can be the thickness direction of the heater 1.

[0013] The heater 1 according to this embodiment comes into contact with a fluid such as a gas or a liquid, and heats the fluid. The gas is, for example, air contained in the environment in which the heater 1 is installed. The liquid is, for example, water or a solution (for example, a coolant liquid). However, the type of fluid is not limited to those exemplified.

[0014] FIG. 1 is a schematic perspective view illustrating a heater 1 according to the present embodiment. FIG. 2 is a schematic plan view of the heater 1 in FIG. 1 as viewed from the Z direction. FIG. 3 is a schematic side view of the heater 1 in FIG. 1 as viewed from the X direction.

[0015] As shown in FIGS. 1 to 3, the heater 1 includes, for example, a base portion 10, an insulating portion 20, a heat generating portion 30, a wiring portion 40, and a protective portion 50.

[0016] FIG. 4 is a schematic perspective view illustrating the base 10. As shown in FIG. As shown in FIG. 4, the base 10 extends, for example, in the X direction. The base 10 has, for example, a plurality of first portions 10a, a plurality of second portions 10b, and a plurality of third portions 10c. The plurality of first portions 10a, the plurality of second portions 10b, and the plurality of third portions 10c can be integrally formed. In this case, the number of second portions 10b can be, for example, twice the number of first portions 10a. The number of third portions 10c can be, for example, one less than the number of first portions 10a.

[0017] As shown in FIGS. 3 and 4, the base 10 can be, for example, a plate-like body that has a substantially corrugated shape when viewed from the X direction.

[0018] The multiple first portions 10a are, for example, plate-shaped and extend in the X direction. The multiple first portions 10a are, for example, arranged at predetermined intervals in the Y direction. When viewed from the Z direction, the shape of the first portions 10a is, for example, approximately rectangular. In this case, the short sides of the first portions 10a extend in the Y direction, and the long sides of the first portions 10a extend in the X direction.

[0019] The second portions 10b are, for example, plate-shaped and extend in the X direction. When viewed from the Y direction, the second portions 10b have, for example, a substantially rectangular shape. In this case, the short sides of the second portions 10b extend in the Z direction, and the long sides of the second portions 10b extend in the X direction. One end of the second portions 10b in the Z direction is connected to one end of the first portions 10a in the Y direction. The second portions 10b intersect with the ends of each of the first portions 10a in the Y direction.

[0020] The angle between the second portion 10b and the first portion 10a is not particularly limited. For example, as shown in Figures 1, 3, and 4, the angle between the second portion 10b and the first portion 10a may be approximately a right angle.

[0021] The plurality of third portions 10c are, for example, plate-shaped and extend in the X direction. The third portions 10c are, for example, spaced apart from the first portions 10a in the Z direction and arranged substantially parallel to the first portions 10a. The plurality of third portions 10c are, for example, arranged side by side at predetermined intervals in the Y direction. When viewed from the Z direction, the third portions 10c are arranged between the first portions 10a, 10a. The third portions 10c intersect with the end of the second portion 10b on the side opposite to the first portion 10a.

[0022] The shape of the third portion 10c when viewed from the Z direction is, for example, approximately rectangular. In this case, the short side of the third portion 10c extends in the Y direction, and the long side of the third portion 10c extends in the X direction. One end of the third portion 10c in the Y direction is connected to an end of the second portion 10b on the opposite side from the first portion 10a in the Z direction. The other end of the third portion 10c in the Y direction is connected to an end of the second portion 10b adjacent to the second portion 10b to which one end of the third portion 10c is connected, on the opposite side from the first portion 10a in the Z direction.

[0023] The angle between the third portion 10c and the second portion 10b is not particularly limited. For example, as shown in Figures 1, 3, and 4, the angle between the third portion 10c and the second portion 10b may be approximately a right angle.

[0024] The dimensions of the base 10 in the X, Y, and Z directions can be changed as appropriate depending on the installation space of the heater 1 and the processing capacity of the heater 1 (for example, the number of heat generating parts 30, the dimensions of the heat generating parts 30 in the X and Y directions, etc.) In this case, the dimensions of the first part 10a, the second part 10b, and the third part 10c in the X direction can be the same or different.

[0025] In this case, the number of first portions 10a and the dimensions of the first portions 10a in the X and Y directions can be changed appropriately depending on the processing capacity of the heater 1. For example, the dimension (width dimension) of the first portions 10a in the Y direction can be set to about 3 mm to 15 mm.

[0026] The thicknesses of the first portion 10a, the second portion 10b, and the third portion 10c may be the same or different, and may be, for example, about 0.3 mm to 1.0 mm.

[0027] The first portion 10a, the second portion 10b, and the third portion 10c are formed from a heat-resistant material with high thermal conductivity. For example, the first portion 10a, the second portion 10b, and the third portion 10c can be formed from a metal such as stainless steel or an aluminum alloy, or an inorganic material such as ceramics. In this case, the first portion 10a, the second portion 10b, and the third portion 10c can be formed from the same material or different materials.

[0028] Here, the thermal conductivity of metal is higher than that of inorganic materials such as ceramics. Therefore, if the first portion 10a, the second portion 10b, and the third portion 10c are made of metal, the heating time of the heater 1 can be shortened. Furthermore, the rigidity of metal is higher than that of inorganic materials such as ceramics. Therefore, if the first portion 10a, the second portion 10b, and the third portion 10c are made of metal, the rigidity of the heater 1 can be improved. Furthermore, if the first portion 10a, the second portion 10b, and the third portion 10c are made of metal, the base 10 can be formed by plastic processing such as bending or pressing, drawing, extrusion, or the like. Therefore, the manufacturing cost of the base 10 and, ultimately, the manufacturing cost of the heater 1 can be reduced.

[0029] On the other hand, inorganic materials such as ceramics generally have insulating properties, so if at least the first portion 10a is made of an inorganic material, the insulating portion 20 described below can be omitted.

[0030] The heater 1 illustrated in FIG. 1 has a base 10 (a first portion 10a, a second portion 10b, and a third portion 10c) containing metal, and an insulating portion 20.

[0031] Furthermore, at least one hole 10d can be provided in the base 10. Note that the base 10 illustrated in FIGS. 1 to 4 has a plurality of holes 10d. The holes 10d can be provided in at least one of the third portion 10c and the second portion 10b. In the base 10 illustrated in FIGS. 1 to 4, a single third portion 10c has a plurality of holes 10d arranged in the X direction. The holes 10d may have a cross-sectional shape extending in the X direction, or may have a cross-sectional shape such as a circle or a rectangle.

[0032] As will be described later, the holes 10d serve as flow paths for the fluid 100 supplied to the heater 1 (see, for example, FIGS. 6 and 7). Therefore, it is preferable to provide the holes 10d in at least one of the third portion 10c, the second portion 10b near the connection between the second portion 10b and the third portion 10c, and the connection between the second portion 10b and the third portion 10c. This makes it easier for the fluid 100 to reach the third portion 10c, thereby increasing the flow rate of the fluid 100 that comes into contact with the second portion 10b and the third portion 10c.

[0033] Furthermore, since it becomes easier to form a flow of the fluid 100 passing through the heater 1 in the Z direction, the heated fluid 100 can be easily supplied to the space facing the heater 1 in the Z direction. This makes it possible to prevent the flow rate of the heated fluid 100 flowing in the space from becoming insufficient and to prevent temperature variations from occurring in the space.

[0034] The number, cross-sectional shape, cross-sectional area, and length of the holes 10d in the X direction can be changed as appropriate depending on the dimensions of the third portion 10c, the dimensions of the base 10 in the X and Y directions, the flow rate of the heated fluid 100 that needs to flow in the space opposite the heater 1 in the Z direction, etc.

[0035] The insulating portion 20, the heat generating portion 30, the wiring portion 40, and the protective portion 50 can be provided on the base portion 10. The insulating portion 20, the heat generating portion 30, the wiring portion 40, and the protective portion 50 can be provided on the side of the first portion 10a opposite to the second portion 10b. In this case, the insulating portion 20, the heat generating portion 30, the wiring portion 40, and the protective portion 50 can be provided on at least one of the plurality of first portions 10a. In the heater 1 illustrated in FIGS. 1 to 3, the insulating portion 20, the heat generating portion 30, the wiring portion 40, and the protective portion 50 are provided on each of the plurality of first portions 10a.

[0036] As shown in FIGS. 2 and 3 , the insulating portion 20 is provided on the surface of the first portion 10a opposite to the second portion 10b in the Z direction. The insulating portion 20 is provided between the heat generating portion 30 and the first portion 10a. The insulating portion 20 is provided to insulate the conductive base portion 10 from the heat generating portion 30 and the wiring portion 40. Therefore, the insulating portion 20 covers at least the area of ​​the surface of the first portion 10a where the heat generating portion 30 and the wiring portion 40 are provided. The thickness of the insulating portion 20 is not particularly limited as long as insulation can be ensured. The insulating portion 20 is formed from a material having heat resistance and insulating properties. The insulating portion 20 can be formed from, for example, ceramics or glass materials. The insulating portion 20 can be formed by, for example, thermal spraying or firing.

[0037] The heat generating unit 30 converts the applied power into heat (Joule heat). The heat generating unit 30 is provided on the first portion 10a via the insulating unit 20. If the first portion 10a is made of an insulating material, the heat generating unit 30 can be provided directly on the first portion 10a.

[0038] The heat generating section 30 is linear and extends in the X direction. The electrical resistance per unit length of the heat generating section 30 can be approximately uniform in the X direction, or can vary. For example, the electrical resistance per unit length of the heat generating section 30 illustrated in FIG. 2 is approximately uniform in the X direction. For example, the dimension (width) of the heat generating section 30 in the Y direction and the dimension (thickness) of the heat generating section 30 in the Z direction are approximately constant. To change the electrical resistance per unit length of the heat generating section 30, it is sufficient to change at least one of the width and the thickness.

[0039] The heat generating portion 30 can be formed using, for example, ruthenium oxide (RuO), a silver-palladium (Ag-Pd) alloy, a silver-platinum (Ag-Pt) alloy, or the like. The heat generating portion 30 can be formed, for example, by applying a paste-like material onto the insulating portion 20 using a method such as screen printing, and then curing the paste using a method such as baking. When the base 10 is formed from an insulating material, the heat generating portion 30 can be formed, for example, by applying a paste-like material onto the surface of the first portion 10a using a method such as screen printing, and then curing the paste using a method such as baking.

[0040] 2 illustrates an example in which two heat generating units 30 are provided for one first portion 10a, but at least one heat generating unit 30 can be provided for one first portion 10a. For example, when multiple heat generating units 30 are provided for one first portion 10a, the multiple heat generating units 30 can be arranged side by side at a predetermined interval in the Y direction. The number of heat generating units 30 can be changed as appropriate depending on the amount of heat required for the heater 1, etc.

[0041] The wiring portion 40 is provided on the first portion 10a via the insulating portion 20. When the first portion 10a is made of an insulating material, the wiring portion 40 can be provided directly on the first portion 10a.

[0042] The wiring section 40 includes, for example, a terminal 41, a wiring 42a, and a wiring 42b. The terminals 41 may be provided in pairs, for example. For example, the terminals 41 may be provided near the ends of the first portion 10a in the X direction. In this case, as shown in FIG. 2, a pair of terminals 41 may be provided near one end of the first portion 10a in the X direction. Alternatively, a terminal 41 may be provided near each of both ends of the first portion 10a in the X direction.

[0043] The pair of terminals 41 are electrically connected to a temperature control device or the like via a connector, wiring, etc. If a conductive fluid comes into contact with the heater 1, a waterproof connector can be used, or the connection portion between the terminals 41 and the wiring can be covered with silicone resin or the like.

[0044] The wiring 42a is provided, for example, to connect a plurality of heat generating parts 30 in series, in parallel, or in series-parallel. In Fig. 2, two heat generating parts 30 are connected in series by the wiring 42a. Note that if only one heat generating part 30 is provided, the wiring 42a can be omitted.

[0045] The wiring 42b electrically connects the terminal 41 and the heat generating portion 30. The wiring 42b is not necessarily required and can be omitted. For example, the terminal 41 can be directly connected to the end of the heat generating portion 30. However, as long as the wiring 42b is provided, the arrangement of the pair of terminals 41 can be changed as desired. Therefore, it is easy to set the arrangement of the pair of terminals 41 taking into consideration the wiring space, the workability of the wiring work, and the like.

[0046] The terminal 41, the wiring 42a, and the wiring 42b are formed using a material containing, for example, silver or copper. For example, the terminal 41, the wiring 42a, and the wiring 42b can be formed by applying a paste-like material onto the insulating portion 20 using a method such as screen printing and then curing the paste-like material using a method such as baking. Note that, when the first portion 10a is formed from an insulating material, the terminal 41, the wiring 42a, and the wiring 42b can be formed by applying a paste-like material directly onto the surface of the first portion 10a using a method such as screen printing and then curing the paste-like material using a method such as baking.

[0047] The protective part 50 is provided on the first part 10a, for example, via the insulating part 20. The protective part 50 covers the heat generating part 30. The terminal 41 is exposed from the protective part 50. Note that, when the first part 10a is made of an insulating material, the protective part 50 is provided directly on the first part 10a and covers the heat generating part 30.

[0048] The protective section 50 has, for example, the function of insulating the heat generating section 30 and the wiring 42a, the function of transferring the heat generated in the heat generating section 30 to the outside, and the function of protecting the heat generating section 30 and the wiring 42a from external forces and fluids to be heated.

[0049] The protective part 50 is formed from a material that is heat-resistant and insulating, and has high chemical stability and thermal conductivity. The protective part 50 is formed from, for example, a glass material. In this case, the protective part 50 can also be formed using a glass material to which a filler containing a material with high thermal conductivity, such as aluminum oxide, has been added. The thermal conductivity of the glass material to which the filler has been added can be, for example, 2 [W / (m·K)] or more. The thickness of the protective part 50 can be, for example, approximately 20 μm to 80 μm.

[0050] The protective portion 50 can be formed, for example, by applying a paste-like material onto the insulating portion 20, the heat generating portion 30, and the wiring 42a using a method such as screen printing, and then curing the material using a method such as baking. In this case, the terminals 41 are exposed from the protective portion 50. When the first portion 10a is made of an insulating material, the protective portion 50 can be formed, for example, by applying a paste-like material onto the first portion 10a, the heat generating portion 30, and the wiring 42a using a method such as screen printing, and then curing the material using a method such as baking.

[0051] The heater 1 may further include a detection unit that detects the temperature of the heat generating unit 30. The detection unit may be, for example, a thermistor. The thermistor may be formed, for example, by applying a paste-like material onto the insulating unit 20 using a screen printing method or the like and then curing the material using a baking method or the like. If the first portion 10a is made of an insulating material, the detection unit may be formed, for example, by applying a paste-like material directly onto the surface of the first portion 10a using a screen printing method or the like and then curing the material using a baking method or the like. The thermistor material may include, for example, manganese and cobalt, and at least one of copper and nickel.

[0052] A wiring section electrically connected to the detection section may be provided. The wiring section may have terminals and wiring, similar to the wiring section 40 described above. In this case, the protection section 50 may cover the detection section and wiring. The terminals may be exposed from the protection section 50.

[0053] Furthermore, although the above describes an example in which the insulating section 20, the heat generating section 30, the wiring section 40, and the protective section 50 are sequentially formed on the base 10, it is also possible to sequentially form at least one set of the insulating section 20, the heat generating section 30, the wiring section 40, and the protective section 50 on the surface of a flat plate-like material, and then bend this to form the base 10. In this way, the insulating section 20, the heat generating section 30, the wiring section 40, and the protective section 50 can be easily formed, thereby reducing the manufacturing cost of the heater 1 and shortening the manufacturing period.

[0054] Next, the function and effect of the heater 1 will be described. First, the function and effect of the heater 101 according to the comparative example will be described. FIG. 5 is a schematic diagram illustrating the effects of the heater 101 according to the comparative example. In FIG. 5, to avoid complication, only the outer shape of the heater 101 as viewed from the X direction is depicted.

[0055] 5, when the fluid 100 is supplied to the heater 101 from the Z direction, the fluid 100 that has come into contact with the heater 101 flows out from the Y-direction end of the heater 101. This shortens the time that the fluid 100 is in contact with the heater 101, making it difficult to improve the heating efficiency of the fluid 100. In this case, increasing the length of the heater 101 in the Y direction to improve the heating efficiency would result in an increase in the size of the heater 101.

[0056] 6 and 7 are schematic diagrams illustrating the effects of heater 1. FIG. 6, when the fluid 100 is supplied to the base 10 side of the heater 1, the fluid 100 flows through the region surrounded by the second portion 10b, the first portion 10a, and the second portion 10b, and flows out through the hole 10d into the space on the opposite side of the heater 1 from the side where the fluid 100 is supplied. A portion of the fluid 100 that has flowed through the region surrounded by the second portion 10b, the first portion 10a, and the second portion 10b flows out from the end of the heater 1 in the Y direction into the space on the opposite side of the heater 1 from the side where the fluid 100 is supplied. Furthermore, the fluid 100 supplied to the hole 10d flows out through the hole 10d into the space on the opposite side of the heater 1 from the side where the fluid 100 is supplied.

[0057] Furthermore, if the angle between the second portion 10b and the first portion 10a is an obtuse angle, or if the angle between the third portion 10c and the second portion 10b is an obtuse angle, the flow path resistance of the fluid 100 flowing between the opposing second portions 10b and 10b can be reduced, thereby increasing the amount of the fluid 100 flowing out into the space on the opposite side of the heater 1 from the side to which the fluid 100 is supplied.

[0058] Since the base 10 is provided with a plurality of second portions 10b, the area where the fluid 100 comes into contact with the base 10 can be increased without increasing the length of the heater 1 in the Y direction. As a result, the heater 1 can be made smaller and the heating efficiency of the fluid 100 can be improved.

[0059] Furthermore, if the holes 10d are provided, a flow of the fluid 100 passing through the heater 1 in the Z direction can be formed, and the heated fluid 100 can be supplied to the space facing the heater 1 in the Z direction. This makes it possible to prevent the flow rate of the heated fluid 100 flowing into the space from becoming insufficient and to prevent temperature variations from occurring in the space.

[0060] As shown in FIG. 7, when the fluid 100 is supplied to the protection section 50 side of the heater 1, the fluid 100 flows along the surface of the protection section 50 and enters the region between the opposing second sections 10b and 10b. The fluid 100 may also directly enter this region. The fluid 100 that has entered this region flows toward the third section 10c and then, via the hole 10d, flows out into the space on the opposite side of the heater 1 from the side where the fluid 100 was supplied. Therefore, the opposing second sections 10b and 10b function as an introduction path that guides the fluid 100 to the hole 10d.

[0061] In this case, if the angle between the second portion 10b and the first portion 10a is an obtuse angle, or if the angle between the third portion 10c and the second portion 10b is an obtuse angle, the flow path resistance of the fluid 100 flowing between the opposing second portions 10b and 10b can be reduced. Furthermore, the fluid 100 flowing between the opposing second portions 10b and 10b can be more easily guided to the hole 10d. Therefore, the amount of the fluid 100 flowing out into the space on the opposite side of the heater 1 from the side to which the fluid 100 is supplied can be increased.

[0062] Furthermore, part of the fluid 100 supplied to the protection section 50 side of the heater 1 flows out from the end side of the heater 1 in the Y direction into the space on the opposite side of the heater 1 from the side where the fluid 100 was supplied.

[0063] Since the base 10 is provided with a plurality of second portions 10b, the area where the fluid 100 comes into contact with the base 10 can be increased without increasing the length of the heater 1 in the Y direction. As a result, the heater 1 can be made smaller and the heating efficiency of the fluid 100 can be improved.

[0064] Furthermore, if the holes 10d are provided, a flow of the fluid 100 passing through the heater 1 in the Z direction can be formed, and the heated fluid 100 can be supplied to the space facing the heater 1 in the Z direction. This makes it possible to prevent the flow rate of the heated fluid 100 flowing into the space from becoming insufficient and to prevent temperature variations from occurring in the space.

[0065] In this case, if holes 10d are provided in at least one of the third portion 10c, the second portion 10b, near the connection between the second portion 10b and the third portion 10c, and the connection between the second portion 10b and the third portion 10c, the fluid 100 can more easily reach the third portion 10c. This increases the flow rate of the fluid 100 that contacts the second portion 10b and the third portion 10c. This also increases the flow rate of the heated fluid 100 that flows into the space via holes 10d.

[0066] Furthermore, if hole 10d is provided in second portion 10b near the connection between second portion 10b and third portion 10c or in the connection between second portion 10b and third portion 10c, the flow direction of fluid 100 flowing into the space can be changed. Therefore, heated fluid 100 can be stirred in the space, further suppressing the occurrence of temperature distribution in the space.

[0067] Furthermore, there are cases where the fluid 100 is supplied to the heater 1 from the X direction. In such cases, the fluid flowing through the region surrounded by the second portion 10b, the first portion 10a, and the second portion 10b is less likely to leave the region, thereby improving the heating efficiency of the fluid 100. Furthermore, if the second portion 10b is provided, the contact area between the fluid 100 and the base 10 can be increased. Therefore, even when the fluid 100 is supplied to the heater 1 from the X direction, it is possible to achieve a reduction in size and an improvement in the heating efficiency of the fluid 100.

[0068] Although several embodiments of the present invention have been described above, these embodiments are presented by way of example only and are not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, modifications, etc. can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, as well as within the scope of the invention and its equivalents as set forth in the claims. Furthermore, the above-described embodiments can be implemented in combination with each other.

[0069] The following are additional notes regarding the above-described embodiment.

[0070] (Appendix 1) A heater in contact with a fluid, comprising: a base extending in a first direction; a heat generating portion provided on the base; Equipped with The base portion is a plurality of first portions each having a plate shape, extending in the first direction, and arranged at predetermined intervals in a second direction intersecting the first direction; a second portion having a plate shape, extending in the first direction, and intersecting with an end portion in the second direction of each of the plurality of first portions; a third portion having a plate shape, extending in the first direction, and intersecting with an end of the second portion opposite to the first portion; and The heat generating portion is a heater provided on the side of the first portion opposite to the second portion.

[0071] (Appendix 2) 2. The heater according to claim 1, wherein at least one of the second portion and the third portion is provided with at least one hole.

[0072] (Appendix 3) 3. A heater as described in Appendix 2, wherein the fluid supplied to one side of the heater in the first direction and a third direction intersecting the second direction flows out to the other side of the heater through the hole.

[0073] (Appendix 4) 4. The heater according to any one of claims 1 to 3, wherein the plurality of first portions, the plurality of second portions, and the plurality of third portions are integrally formed.

[0074] (Appendix 5) the base comprises a metal; 4. The heater according to any one of claims 1 to 3, further comprising an insulating part provided between the heat generating part and the first part. [Explanation of symbols]

[0075] 1 heater, 10 base, 10a first part, 10b second part, 10c third part, 10d hole, 20 insulating part, 30 heat generating part, 40 wiring part, 50 protective part, 100 fluid

Claims

1. A heater in contact with a fluid, comprising: a base extending in a first direction; a heat generating portion provided on the base; Equipped with The base portion is a plurality of first portions each having a plate shape, extending in the first direction, and arranged at predetermined intervals in a second direction intersecting the first direction; a second portion having a plate shape, extending in the first direction, and intersecting with an end portion in the second direction of each of the plurality of first portions; a third portion having a plate shape, extending in the first direction, and intersecting with an end of the second portion opposite to the first portion; and The heat generating portion is a heater provided on the side of the first portion opposite to the second portion.

2. 2. The heater according to claim 1, wherein at least one of the second portion and the third portion is provided with at least one hole.

3. 3. The heater of claim 2, wherein the fluid supplied to one side of the heater in the first direction and a third direction intersecting the second direction flows out to the other side of the heater through the hole.

4. 4. The heater according to claim 1, wherein the plurality of first portions, the plurality of second portions, and the plurality of third portions are integrally formed.

5. the base comprises a metal; 4. The heater according to claim 1, further comprising an insulating portion provided between the heat generating portion and the first portion.

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