TW202334592A - Heat generating device and heat utilization system - Google Patents

Abstract

Provided are a heat generating device and a heat utilization system in which a decrease in heat generating efficiency is suppressed. The heat generating device is provided with: a wound heat generating body 31 which is composed of a winding of a sheet member composed of a multilayer film that generates heat by storage and release of hydrogen; and an affixing portion (upper affixing portion 32 and lower affixing portion 33) having a spiral groove (groove 322 and groove 332) that affixes an end of the wound heat generating body in the winding axis direction thereof. The heat utilization system is provided with a heat generating device, and a heat utilization device that utilizes a heat medium heated by the heat generating device as a heat source.

Description

Heating device and heat utilization system

The invention relates to a heating device and a heat utilization system.

It is known that hydrogen-absorbing alloys have the characteristic of repeatedly absorbing and releasing large amounts of hydrogen under certain reaction conditions, and the absorption and release of hydrogen are accompanied by greater reaction heat. Various forms of heating devices using such an alloy that absorbs hydrogen as a heating portion have been proposed (Patent Document 1). [Prior technical literature] [Patent Document]

[Patent Document 1] International Publication No. 2020/122097

[Problem to be solved by the invention]

Patent Document 1 discloses a wound heating element in which a plate-shaped heating element is wound in a loose roll as an aspect of a heating portion used in a heating device. In this form, due to the contact between the winding heating element and the frame, or the contact between adjacent winding surfaces, the contact parts are fused, the effective heating area is reduced, the calorific value is reduced, or heat escapes. There is a risk of stopping the fever itself.

The present invention was completed in order to solve such a problem, and aims to provide a heating device and a heat utilization system that suppress a decrease in heating efficiency. [Technical means to solve problems]

A heating device according to one aspect of the present invention is provided with: a wound heating element formed by winding a plate-like member composed of a multi-layer film that generates heat by absorbing and releasing hydrogen; and a fixing portion having the wound The spiral groove is fixed at the end of the heating element in the direction of the winding axis.

A heat utilization system according to one aspect of the present invention includes: the above-mentioned heating device; and a heat utilization device that uses a heat medium heated by the heating device as a heat source. [Effects of the invention]

According to the heating device of one aspect of the present invention, the end of the winding axis direction of the winding heating element is accommodated in the groove provided in the fixing part. Generally speaking, plate-shaped members formed by winding are easily deformed, but by housing the ends in the grooves, it is possible to prevent the winding heating element from contacting the frame, or the adjacent winding surfaces from contacting each other, thereby suppressing the heating efficiency. decline.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

The detailed structure of the heating element 1 used in the heating device of this embodiment will be described using FIG. 1 . First, the structure and heating mechanism of the heating element common to each embodiment of the present application will be described using FIGS. 1 and 2 .

As shown in FIG. 1 , the heating element 1 has a base 101 and a multilayer film 102 . The base 101 is formed of a metal that absorbs hydrogen, an alloy that absorbs hydrogen, or a proton conductor. As a metal that absorbs hydrogen, for example, Ni, Pd, V, Nb, Ta, Ti, etc. can be used. As an alloy that absorbs hydrogen, for example, LaNi ₅ , CaCu ₅ , MgZn _{2 , ZrNi 2 ,} ZrCr ₂ , TiFe, TiCo, Mg ₂ Ni, Mg ₂ Cu, etc. can be used. As the proton conductor, for example, BaCeO ₃ series (for example, Ba(Ce _0.95 Y _0.05 )O _3-6 ), SrCeO ₃ series (for example, Sr(Ce _0.95 Y _0.05 )O _3-6 ), CaZrO ₃ series (for example, CaZr _0.95 Y _0.05 O _3-α ), SrZrO ₃ series (for example, SrZr _0.9 Y _0.1 O _3-α ), β Al ₂ O ₃ , β Ga ₂ O ₃ , etc.

The multilayer film 102 is provided on the base 101 . In FIG. 1 , although the multilayer film 102 is only provided on the surface of the base 101 , the multilayer film 102 can also be provided on both sides of the base 101 . In this embodiment, the heat-generating structure has the heat-generating element 1 provided with multi-layer films 102 on both sides of a base 101 .

The multilayer film 102 is formed of the following: a first layer 103 made of a hydrogen-absorbing metal or a hydrogen-absorbing alloy; and a second layer 104 made of a hydrogen-absorbing metal different from the first layer 103. Hydrogen alloys or ceramics are formed. Between the base 101, the first layer 103, and the second layer 104, a dissimilar material interface 105 to be described later is formed. In FIG. 1 , the multi-layer film 102 is formed by laminating the first layer 103 and the second layer 104 sequentially and alternately on the surface of the base 101 . The first layer 103 and the second layer 104 are five layers respectively. In addition, the number of layers in each of the first layer 103 and the second layer 104 can be changed appropriately. The multilayer film 102 may also be formed by laminating the second layer 104 and the first layer 103 sequentially and alternately on the surface of the base 101 . The multilayer film 102 only needs to have at least one first layer 103 and a second layer 104 to form at least one dissimilar material interface 105 .

The first layer 103 is formed of, for example, any one of Ni, Pd, Cu, Mn, Cr, Fe, Mg, Co, and alloys thereof. The alloy forming the first layer 103 is preferably an alloy containing two or more types of Ni, Pd, Cu, Mn, Cr, Fe, Mg, and Co. As an alloy forming the first layer 103, an alloy obtained by adding additive elements to Ni, Pd, Cu, Mn, Cr, Fe, Mg, or Co can also be used.

The second layer 104 is formed of, for example, any one of Ni, Pd, Cu, Mn, Cr, Fe, Mg, Co, alloys thereof, and SiC. The alloy forming the second layer 104 is preferably an alloy containing two or more types of Ni, Pd, Cu, Mn, Cr, Fe, Mg, and Co. As an alloy for forming the second layer 104, an alloy obtained by adding additive elements to Ni, Pd, Cu, Mn, Cr, Fe, Mg, or Co can also be used.

As the combination of the first layer 103 and the second layer 104, if the types of elements are expressed as "the first layer 103 - the second layer 104 (the second layer 104 - the first layer 103)", Pd-Ni is preferred. , Ni-Cu, Ni-Cr, Ni-Fe, Ni-Mg, Ni-Co. When the second layer 104 is made of ceramic, "the first layer 103 to the second layer 104" is preferably Ni-SiC.

As shown in FIG. 2 , the dissimilar material interface 105 allows hydrogen atoms to pass therethrough. FIG. 2 is a schematic diagram showing the following situation: after causing the first layer 103 and the second layer 104 formed of a hydrogen-absorbing metal with a face-centered cubic structure to absorb hydrogen, the first layer 103 and the second layer 104 are heated. At this time, the hydrogen atoms in the metal lattice in the first layer 103 move to the metal lattice in the second layer 104 through the dissimilar material interface 105.

The thickness of the first layer 103 and the thickness of the second layer 104 are preferably less than 1000 nm respectively. When the thickness of each of the first layer 103 and the second layer 104 is 1000 nm or more, it is difficult for hydrogen to penetrate the multilayer film 102 . In addition, since the thickness of each of the first layer 103 and the second layer 104 is less than 1000 nm, a nanostructure that does not exhibit bulk characteristics can be maintained. The thickness of each of the first layer 103 and the second layer 104 is preferably less than 500 nm. Since the thickness of each of the first layer 103 and the second layer 104 is less than 500 nm, a nanostructure that does not exhibit bulk characteristics at all can be maintained.

An example of a method of manufacturing the heating element 1 will be described. The heating element 1 can be manufactured as follows: prepare a plate-shaped base 101, and use an evaporation device to bring the hydrogen-absorbing metal or hydrogen-absorbing alloy that becomes the first layer 103 or the second layer 104 into a gas phase state. The first layer 103 and the second layer 104 are alternately formed on the base 101 by aggregation or adsorption. It is preferable to continuously form the first layer 103 and the second layer 104 in a vacuum state. Thereby, no natural oxide film is formed between the first layer 103 and the second layer 104, but only the dissimilar material interface 105 is formed. As the vapor deposition device, a physical vapor deposition device that physically vaporizes a hydrogen-absorbing metal or a hydrogen-absorbing alloy is used. As the physical evaporation device, a sputtering device, a vacuum evaporation device, or a CVD (Chemical Vapor Deposition) device is preferred. Alternatively, a hydrogen-absorbing metal or a hydrogen-absorbing alloy may be deposited on the base 101 by an electroplating method to alternately form the first layer 103 and the second layer 104.

In addition, in FIGS. 1 and 2 , although the multilayer film 102 provided on the base 101 is composed of the first layer 103 and the second layer 104, it is not limited to this. The multilayer film 102 may further have a third layer. The third layer is formed of a hydrogen-absorbing metal, a hydrogen-absorbing alloy, or ceramic that is different from the first layer 103 and the second layer 104 . In addition, the multilayer film 102 only needs to include one or more third layers.

Furthermore, the multilayer film 102 provided on the base 101 may further have a fourth layer in addition to the first layer 103, the second layer 104 and the third layer. The fourth layer is formed of a hydrogen-absorbing metal, a hydrogen-absorbing alloy, or ceramic that is different from the first layer 103, the second layer 104, and the third layer. In addition, the multilayer film 102 only needs to include one or more fourth layers in the same manner as the third layer.

(First Embodiment) Next, the heat utilization system of the first embodiment will be described using FIGS. 3 to 7 . FIG. 3 shows a heat utilization system 10 using the heating element 1 shown in FIGS. 1 and 2 . In the heat utilization system 10 , the heating element 1 is used in the heating device 11 . The heating device 11 is configured to house the heating module 12 including the heating element 1 in a sealed container 13 . By supplying the hydrogen-based gas to the sealed container 13 , hydrogen is absorbed by the base 101 and the multilayer film 102 . Even if the heating element 1 stops supplying the hydrogen-based gas to the sealed container 13, the base 101 and the multilayer film 102 maintain a state in which hydrogen is absorbed.

In the heating element 1, when heating is started by the heater (not shown in Figure 3) provided in the heating module 12, the hydrogen stored in the base 101 and the multi-layer film 102 is released, and on one side inside the multi-layer film 102 Quantum diffusion occurs during the transition. It is known that hydrogen is light, and quantum diffusion occurs while transitioning the sites (octahedron or tetrahedron) occupied by hydrogen in certain substances A and B. The heating element 1 is heated by a heater in a vacuum state, causing hydrogen to pass through the dissimilar material interface 105 due to quantum diffusion, thereby generating excess heat above the heating temperature of the heater. The heating element 1 absorbs hydrogen contained in the hydrogen-based gas and is heated by a heater to generate heat (hereinafter referred to as excess heat) that is higher than the heating temperature of the heater.

The heat utilization system 10 uses the heating device 11 as a heat source and operates a heat utilization device (not shown) connected to the heating device 11 via a heat medium pipe. As mentioned above, the heating module 12 is stored in the storage container 14 in a state of being accommodated in the airtight container 13 . The storage container 14 is provided with an inflow port 14a and an outflow port 14b for the heat medium. When the heat medium flows into the storage container 14 from the heat utilization device through the inlet 14a, the heat medium is heated by the heating device 11 in the storage container 14. The heated heat medium is supplied to the heat utilization device again from the outflow port 14b. In this way, the heat utilization device receives the heated heat medium, and uses the heated heat medium to operate the turbine or the like. Through the excess heat of the heating module 12, the heat medium is set to a temperature within a range of, for example, 50°C or more and 1500°C or less.

The sealed container 13 is a hollow container that houses the heating module 12 inside. The airtight container 13 is made of stainless steel, for example. The airtight container 13 has a supply port 13a connected to a supply piping 15b to be described later, and an exhaust port 13b connected to an exhaust piping 16b to be described later. The airtight container 13 is formed of, for example, a container body (not shown) formed in a cylindrical shape, an upper cover (not shown) provided at the upper end of the container body, and a lower cover (not shown) provided at the lower end of the container body. For example, the supply port 13a is formed in the lower cover, and the exhaust port 13b is formed in the upper cover. A space is formed inside the sealed container 13 by the inner surfaces of the container body, the upper cover, and the lower cover. The hydrogen-based gas described below is supplied to the sealed container 13 via the supply pipe 15b and the supply port 13a.

The heat utilization system 10 further includes a gas supply unit 15, a gas exhaust unit 16, a heater power supply 17, and a control unit 18. The control unit 18 drives the heating device 11 by controlling the gas supply unit 15 , the gas exhaust unit 16 and the heater power supply 17 .

The gas supply unit 15 supplies the hydrogen-based gas into the sealed container 13 . The gas supply part 15 has a gas cylinder 15a, a supply pipe 15b, and a supply valve 15c. The gas cylinder 15a is a container for storing hydrogen gas at high pressure. The supply pipe 15b connects the gas cylinder 15a and the sealed container 13. The supply pipe 15b circulates the hydrogen-based gas stored in the gas cylinder 15a to the sealed container 13. The supply valve 15c is provided in the supply pipe 15b. The supply valve 15c adjusts the flow rate of the hydrogen-based gas flowing through the supply pipe 15b. The supply valve 15c is electrically connected to the control unit 18. The hydrogen gas system contains gases that are isotopes of hydrogen. As the hydrogen-based gas, at least one of heavy hydrogen gas and light hydrogen gas can be used. The light hydrogen system contains a mixture of naturally occurring light hydrogen and heavy hydrogen, that is, a mixture in which the presence ratio of light hydrogen is 99.985% and the presence ratio of heavy hydrogen is 0.015%. In the following description, when there is no distinction between light hydrogen and heavy hydrogen, it is described as "hydrogen".

The gas exhaust part 16 exhausts the vacuum inside the sealed container 13 . The gas supply unit 16 includes a vacuum pump 16a, an exhaust pipe 16b, and an exhaust valve 16c. The vacuum pump 16a is formed of, for example, a turbomolecular pump and a dry vacuum pump. The exhaust pipe 16b connects the vacuum pump 16a and the sealed container 13. The exhaust pipe 16b allows the gas inside the sealed container 13 to flow to the vacuum pump 16a. The exhaust valve 16c is provided in the exhaust pipe 16b. The exhaust valve 16c adjusts the flow rate of the gas flowing through the exhaust pipe 16b. The vacuum pump 16a and the exhaust valve 16c are electrically connected to the control unit 18. The exhaust speed of the gas exhaust part 16 can be controlled, for example, by adjusting the rotation speed of the turbomolecular pump.

The heater power supply 17 is electrically connected to the heater (not shown in Figure 3) in the heating module 12, and controls the output power to the heater to drive the heater. In this example, as shown in FIG. 4 , the heater is formed as a cylindrical electric furnace, and the heating element 1 is arranged on the outer periphery of the heater. The heating temperature of the heater is, for example, preferably 300°C or higher, more preferably 500°C or higher, and still more preferably 600°C or higher.

The heating element 1 is provided with a temperature sensor (not shown). Temperature sensors can also be installed at multiple locations of the heating element 1 . The temperature sensor is electrically connected to the control unit 18 and outputs a signal corresponding to the detected temperature to the control unit 18 .

The control unit 18 controls the operations of each unit of the heat utilization system 10 . The control unit 18 mainly includes, for example, a computing device (Central Processing Unit: central processing unit), a read-only memory (Read Only Memory: read-only memory), or a random access memory (Random Access Memory: random access memory). Waiting for the memory department. In the computing device, for example, programs or data stored in the memory are used to perform various computing processes.

The control unit 18 is electrically connected to the supply valve 15c, the vacuum pump 16a, the exhaust valve 16c, the heater power supply 17, and the temperature sensor installed on the heating element 1 and the heater. For example, the control unit 18 adjusts the output power of the heater power supply 17, the supply amount of the hydrogen-based gas, the pressure of the sealed container 13, etc. based on the temperature of the heating element 1 detected by the temperature sensor, thereby performing excess heat output. control.

The heating device 11 supplies the hydrogen-based gas into the inside of the sealed container 13 so that the hydrogen contained in the hydrogen-based gas is occluded in the heating element 1 . In addition, the heating device 11 evacuates the inside of the sealed container 13 and heats the heating element 1 to release the hydrogen stored in the heating element 1 . In this way, the heating device 11 generates excess heat by absorbing and releasing hydrogen in the heating element 1 . That is, the heating method using the heating device 11 includes: a hydrogen absorbing step in which hydrogen contained in the hydrogen-based gas is supplied to the inside of the sealed container 13 so that the hydrogen contained in the hydrogen-based gas is absorbed and stored in the heating element 1; and a hydrogen releasing step. , which is to release the hydrogen stored in the heating element 1 by vacuum exhausting the interior of the sealed container 13 and heating the heating element 1 . In fact, the hydrogen storage step and the hydrogen release step are repeated. In addition, in the hydrogen storage step, before supplying the hydrogen-based gas into the inside of the sealed container 13, the heating element 1 can be heated to remove water etc. attached to the heating element 1. In the hydrogen release step, for example, after stopping the supply of hydrogen-based gas into the inside of the sealed container 13, vacuum exhaust and heating are performed.

Figure 4 is an exploded perspective view of the heating module 12. FIG. 5 is an exploded perspective view of the heating structure 21 which is a part of the heating module 12 . In the following, although the up, down, left and right directions in the figure are used for description, the arrangement of the heating module 12 is not limited to the direction used in the following description, and can be arranged in any direction.

The heating module 12 includes a heating structure 21, a heater 22, a support 23, an upper cover 24, and a lower cover 25. The heating structure 21 has a hollow structure within the heating element 1, and a cylindrical heater 22 is inserted into the hollow portion. The end surface of the heating structure 21 is closed by an upper cover 24 and a lower cover 25 , and the upper cover 24 and the lower cover 25 are connected by pillars 23 .

The support 23, the upper cover 24 and the lower cover 25 that constitute the heating module 12 are made of a porous body. Thereby, in the airtight container 13 accommodating the heating module 12, the heat generating module 12 (the support 23, the upper cover 24 and the lower cover) 25) The hydrogen gas existing outside can reach the heating structure 21 arranged in the heating module 12 . In addition, the support 23, the upper cover 24, and the lower cover 25 may be made of a porous body and have pores through which the hydrogen-based gas can pass, or they may have pores through which the hydrogen-based gas can pass in addition to being made of porous materials. In this way, the heating module 12 is constructed.

As shown in FIG. 5 , the heat-generating structure 21 includes a wound heating element 31 , an upper fixing part 32 , a lower fixing part 33 , and a guide 34 . The wound heating element 31 is formed by winding the heating element 1 which is a plate-shaped member. The winding heating element 31 is held by the guide 34 arranged near the middle of the winding axis direction, and the ends in the winding axis direction (up and down direction) are connected by the upper fixing part 32 and the lower fixing part 33 fixed.

Specifically, the wound heating element 31 is formed by winding the plate-shaped heating element 1 (three times in the figure). The upper fixing part 32 is a disc-shaped member with an opening in the center, and a spiral groove 322 on the lower end surface. The lower fixing part 33 is a disc-shaped member having an opening in the center, and has a spiral groove 332 on the upper end surface. The upper fixing part 32 and the lower fixing part 33 (fixing part) are constituted in pairs. The guide 34 is a disc-shaped member having an opening in the center, and is provided with a spiral through groove 342 penetrating in the axial direction.

FIG. 6 is a top view of the side of the upper fixing part 32 having the groove 322. As shown in FIG. 6 , the groove width of the groove 322 of the upper fixing part 32 is slightly larger than the thickness of the wound heating element 31 . The groove along the spiral direction is longer than the winding length of the winding heating element 31, extends from the outermost circumference toward the outer circumference of the upper fixed portion 32, and penetrates the outer circumferential surface.

The shape of the groove 332 of the lower fixed part 33 and the through groove 342 of the guide 34 has the same spiral structure as the groove 322 of the upper fixed part 32 shown in FIG. 6 . For this structure, when the heat-generating structure 21 is assembled, the upper end of the wound heating element 31 is accommodated in the groove 322 of the upper fixing part 32, and the upper end of the wound heating element 31 is accommodated in the groove 332 of the lower fixing part 33. Lower end. Furthermore, the midway portion in the axial direction of the wound heating element 31 is fixed by the through groove 342 of the guide 34 . Since the groove lengths of the grooves 322, 332 and the through groove 342 are longer than the winding length of the wound heating element 31, distortion of the elongated portion due to thermal expansion of the wound heating element 31 when heated can be suppressed. In addition, the size (groove width and groove length) of the through groove 342 is equal to the groove 322 of the upper fixing part 32 and the groove 332 of the lower fixing part 33 . In addition, in this disclosure, "equal" and "identical" not only mean "completely equal" and "identical", but also include "approximately equal" and "approximately the same", for example, including an error of about a few %. By making the groove widths and groove lengths of the grooves 322 and 332 and the through groove 342 approximately the same, it is possible to prevent the coiled heating element 31 from coming into contact with the heater 22 due to deflection or the like, or from being adjacent to the coiled heating element 31 The winding surfaces are in contact with each other.

The upper fixing part 32, the lower fixing part 33 and the guide 34 are formed of non-metallic materials, such as ceramics. Thereby, when the heating element 1 generates heat, fusion in the grooves 322 and 332 and the through groove 342 can be suppressed.

Referring again to FIG. 4 , two fixing holes 321 are provided on the upper surface of the upper fixing part 32 to engage with the fixing pins 241 provided on the lower surface of the upper cover 24 . Furthermore, two fixing holes (not shown in FIG. 4 ) are provided on the lower surface of the lower fixing part 33 to engage with the fixing pins 251 provided on the upper surface of the lower cover 25 .

The pillars 23 are plate-shaped members extending in the axial direction formed in pairs at opposite positions in the circumferential direction, and have a pillar body 231 with a curved cross-section. The curved inner surface of the pillar body 231 contacts along the outer periphery of the upper fixing part 32 , the lower fixing part 33 and the guide 34 of the heating structure 21 during assembly. Furthermore, the support body 231 is provided with a protruding portion 232 protruding toward the inner circumferential side at the same position in the middle of the axial direction. The protruding portion 232 is provided with a fixing pin 233 extending upward along the axial direction.

The fixing pin 233 of the pillar 23 is fitted with the fixing hole provided on the lower surface of the guide member 34 . Furthermore, the support 23 is configured such that both ends thereof are fitted into the groove 242 provided in part of the side surface of the upper cover 24 and the groove 252 provided in part of the side surface of the lower cover 25 . The grooves 242 and 252 are formed in the upper cover 24 and the lower cover 25 so that part of the outer circumference is cut in part in the axial direction. The pillar 23 is longer in the axial direction than the heating structure 21 , and the end protruding relative to the end surface of the heating structure 21 is fitted into the grooves 242 and 252 .

In this way, when the upper end surface of the heating structure 21 is closed by the upper cover 24 , the fixing hole 321 of the upper fixing part 32 is fitted with the fixing pin 241 of the upper cover 24 . When the lower end surface of the heating structure 21 is closed by the lower cover 25 , the fixing hole of the lower fixing part 33 is fitted with the fixing pin 251 of the lower cover 25 . For such a structure, the heat-generating structure 21 is fixed to the support|pillar 23, the upper cover 24, and the lower cover 25. Furthermore, the position of the guide 34 is fixed by the fixing pin 233 of the support 23 to inhibit the rotation of the guide 34.

In addition, although two pillars 23 are provided in this example, three or more pillars may be provided. Furthermore, although one guide 34 is provided in this example, two or more guides 34 may be provided. When a plurality of guide members 34 are provided, the pillar 23 may also be provided with protrusions 232 and fixing pins 233 corresponding to the number of guide members 34 .

Here, although the example in which the upper cover 24 and the lower cover 25 are provided with the grooves 242 and 252 for fitting the pillar 23 has been described, the invention is not limited to this. Alternatively, the grooves 242 and 252 may not be provided in the upper cover 24 and the lower cover 25 so that the axial lengths of the support 23 and the heating structure 21 are approximately the same. In this case, when the upper end surfaces of the heating structure 21 and the pillar 23 are closed by the upper cover 24, the fixing hole 321 of the upper fixing part 32 is fitted with the fixing pin 241 of the upper cover 24, and the lower part of the heating structure 21 and the pillar 23 is When the end surface is closed by the lower cover 25, the fixing hole of the lower fixing portion 33 is fitted with the fixing pin 251 of the lower cover 25. Furthermore, the pillar 23 is fixed to the upper cover 24 and the lower cover 25 by crimping or adhesion. In this way, the heat-generating structure 21 is fixed to the pillar 23, the upper cover 24, and the lower cover 25.

The pair of fixing parts (the upper fixing part 32 and the lower fixing part 33 ) are fixed using the pillars 23 provided outside the wound heating element 31 . In addition, as long as the support 23 is provided with the protruding portion 232 and the fixing pin 233, it is not limited to a plate-shaped member with a curved cross section, and may also be a rectangular prism-shaped or cylindrical member. By using such pillars 23, at least part of the wound heating element 31 is exposed in the heating structure 21, thereby preventing the heat conduction efficiency to the outside from being reduced when the heating module 12 generates heat.

FIG. 7 is a cross-sectional view of the plane including the axis of the heating module 12 . In this figure, a cross section through the fixing pin 241 of the upper cover 24 , the fixing pin 251 of the lower cover 25 and the fixing pin 233 of the pillar 23 is shown.

In the upper cover 24 of the disc-shaped member, a small-diameter opening 243 provided on the upper surface side and a large-diameter opening 244 provided on the lower surface side are provided in communication with each other. The heater 22 is accommodated inside the large-diameter opening 244 and is locked at the step formed by the two openings 243 and 244 . As described above, the upper cover 24 is provided with the groove 242 in the outer peripheral portion on the lower surface side that is fitted into the support column 23 . In addition, a fixing pin 241 is provided on the lower surface of the upper cover 24 , and the fixing pin 241 fits into the fixing hole 321 provided in the upper fixing part 32 .

Similarly, in the lower cover 25 of the disc-shaped member, a small-diameter opening 253 provided on the lower surface side and a large-diameter opening 254 provided on the upper surface side are provided in communication with each other. The heater 22 is housed inside the large-diameter opening 254 and is locked at the step formed by the two openings 253 and 254 . As described above, the lower cover 25 is provided with the groove 252 in the outer peripheral portion on the upper surface side that is fitted into the support column 23 . Furthermore, a fixing pin 251 is provided on the upper surface of the lower cover 25 , and the fixing pin 251 fits into the fixing hole 331 provided in the lower fixing part 33 . The heater 22 is connected to the heater power supply 17 (shown in FIG. 3 ) via wiring passing through at least one of the openings 243 and 244 of the upper cover 24 and the openings 253 and 254 of the lower cover 25 .

In the figure, the protruding portion 232 of the pillar 23 is shown in an enlarged manner. The fixing pin 233 provided on the protruding portion 232 is fitted into the fixing hole 341 provided on the lower surface of the guide 34 .

In the direction of the winding axis, the upper end of the winding heating element 31 is fixed by the groove 322 of the upper fixing part 32 , and the other lower end is fixed by the groove 332 of the lower fixing part 33 . That is, the grooves (the grooves 322 and the grooves 332 ) provided in the pair of fixing parts (the upper fixing part 32 and the lower fixing part 33 ) fix both ends of the winding heating element 31 in the axial direction. Furthermore, the winding heating element 31 is fixed in the middle of the winding axis direction by the through groove 342 of the guide 34 .

Due to this structure, when the heat-generating structure 21 is assembled, the wound heating element 31 is fixed through the groove 322 of the upper fixing part 32 and the groove 332 of the lower fixing part 33 and is penetrated by the guide 34 Groove 342 is fixed. Thereby, it is possible to prevent the wound heating element 31 from contacting the heater 22 or the adjacent and facing heating elements 1 from contacting each other due to the winding of the wound heating element 31 .

In the above embodiment, the groove 322 of the upper fixing part 32, the groove 332 of the lower fixing part 33, and the through groove 342 of the guide 34 are configured so as to extend in the length direction of the grooves as shown in FIG. 6 . The outermost periphery extends toward the outer periphery of the upper fixing portion 32 and penetrates the outer peripheral surface, but is not limited thereto. As shown in FIG. 8 , the grooves may be formed into a spiral shape with a constant groove interval without penetrating the outer peripheral surface.

(Second Embodiment) Next, the heat utilization system of the second embodiment will be described using FIGS. 9 to 11 . FIG. 9 is an exploded perspective view of the heating module included in the heat utilization system of the second embodiment, which is equivalent to FIG. 4 of the first embodiment. Fig. 10 is an exploded perspective view of the heating structure included in the heating module shown in Fig. 9, which is equivalent to Fig. 5 of the first embodiment. Fig. 11 is a cross-sectional view of the heating module shown in Fig. 9, which is equivalent to Fig. 7 of the first embodiment.

As shown in FIG. 9 , in the second embodiment, compared with the first embodiment, the pillars 23 are removed, and the grooves 242 and 252 in the upper cover 24 and the lower cover 25 that fit with both ends of the pillars 23 are removed. . The upper cover 24 has a large-diameter disc member and a small-diameter disc member provided on its upper surface. The lower cover 25 has a large-diameter disc member and a small-diameter disc member provided on its lower surface.

Furthermore, as shown in FIG. 10 , the upper fixing portion 32 of the heating structure 21 is provided with an annular groove 41 inside the spiral groove 322 on the lower surface. Similarly, the guide 34 is provided with an annular groove 42 inside the spiral through groove 342 on the upper surface. In addition, the annular groove 42 does not penetrate the guide 34 in the axial direction. Furthermore, an upper support frame 43 is provided between the upper fixing part 32 and the guide 34 and is a columnar member (in this example, a hollow cylindrical shape) made of, for example, ceramics having excellent thermal conductivity. The upper end of the upper support frame 43 is fitted with the annular groove 41 provided on the lower surface of the upper fixing part 32 , and the lower end is fitted with the annular groove 42 provided on the upper surface of the guide 34 .

Similarly, the lower fixed portion 33 of the heating structure 21 is provided with an annular groove 44 inside the spiral groove 332 on the upper surface. Similarly, the guide 34 is provided with an annular groove (not shown in FIG. 10 ) inside the through groove 342 on the lower surface. In addition, the annular groove provided on the lower surface of the guide 34 is the same as the annular groove 42 provided on the upper surface and does not penetrate the guide 34 in the axial direction. Furthermore, between the lower fixing part 33 and the guide 34, a lower support frame 45 is provided, which is a columnar member (in this example, a hollow cylindrical shape) made of, for example, ceramics having excellent thermal conductivity. The lower end of the lower support frame 45 is fitted into the annular groove 44 of the lower fixing part 33 , and the upper end is fitted into the annular groove provided on the lower surface of the guide 34 .

Referring again to FIG. 11 , an annular groove 46 provided on the lower surface of the guide 34 and not shown in FIG. 10 is shown. As mentioned above, the upper end of the upper support frame 43 is fitted into the annular groove 41 of the upper fixing part 32 , and the lower end is fitted into the annular groove 42 provided on the upper surface of the guide 34 . The lower end of the lower support frame 45 is fitted into the annular groove 44 of the lower fixing part 33 , and the upper end is fitted into the annular groove 46 provided on the lower surface of the guide 34 . The paired fixing parts (upper fixing part 32 and lower fixing part 33 ) are fixed using columnar members (upper support frame 43 and lower support frame 45 ) provided inside the wound heating element 31 .

Furthermore, as mentioned above, the upper cover 24 has a large-diameter disc member and a small-diameter disc member provided on the upper surface of the disc member. The lower cover 25 has a large-diameter disc member and a small-diameter disc member provided on the lower surface of the disc member. Furthermore, as shown in FIG. 11 , the upper cover 24 is provided with openings 47 of equal diameters in the axial direction penetrating the two disk members. The lower cover 25 is provided with openings 48 of equal diameters in the axial direction penetrating the two disc members.

The inner diameter of the openings 47 and 48 is substantially equal to the outer diameter of the heater 22 , and the heater 22 is inserted into the opening 47 of the upper cover 24 and the opening 48 of the lower cover 25 . The small diameter disk member on the upper side of the upper cover 24 has a through hole 49 reaching the opening 47 on its side. The through hole 49 is configured such that a large diameter portion on the side side communicates with a small diameter portion on the center side, and a step portion is formed between the two. The head of the bolt 50 is accommodated in the large diameter portion in a state of being locked by the step portion. Furthermore, a threaded groove is provided on the inner surface of the small diameter portion of the through hole 49, and the threaded portion of the bolt 50 is threadedly engaged with the threaded groove. The small-diameter disc member on the lower side of the lower cover 25 has the same structure as the small-diameter disc member on the upper side of the upper cover 24 . That is, the small-diameter disc member of the lower cover 25 has a through-hole 51 reaching the opening 48. The large-diameter part of the through-hole 51 accommodates the head of the bolt 52, and the small-diameter part of the through-hole 51 is threaded. The groove is threaded with the threaded portion of the bolt 52 . The heater 22 can be fixed to the upper cover 24 and the lower cover 25 through the bolts 50 and 52 .

In this way, in the second embodiment, by disposing the upper support frame 43 and the lower support frame 45 between the wound heating element 31 and the heater 22, contact between the wound heating element 31 and the heater 22 can be prevented. . By the upper support frame 43 and the lower support frame 45, the positions of the upper fixing part 32, the lower fixing part 33 and the guide 34 can be fixed. By the upper support frame 43 and the lower support frame 45 having excellent thermal conductivity, the heat from the heater 22 can be uniformized and transferred to the wound heating element 31 . Furthermore, since the winding heating element 31 is exposed in the heating structure 21, it is possible to prevent the heat conduction efficiency to the outside from being reduced when the heating module 12 generates heat, as in the first embodiment.

The present invention can be implemented in various embodiments and modifications without departing from the broad spirit and scope of the present invention. In addition, the above-mentioned embodiment is used to illustrate the present invention and does not limit the scope of the present invention. That is, the scope of the present invention is shown not by the embodiments but by the patent claims. Furthermore, any changes made within the scope of the patent application and within the scope of equivalent inventive significance shall be deemed to be within the scope of the present invention.

1: Heating element 10:Heat utilization system 11: Heating device 12: Heating module 13: Airtight container 13a: Supply port 13b:Exhaust port 14:Storage container 14a: Inlet 14b: Outlet 15:Gas supply department 15a:gas cylinder 15b: Supply piping 15c: Supply valve 16:Gas exhaust part 16a: Vacuum pump 16b: Exhaust piping 16c: Exhaust valve 17: Heater power supply 18:Control Department 21: Heating structure 22:Heater 23:Pillar 24: Upper cover 25:Lower cover 31: Coiled heating element 32: Upper fixed part 33: Lower fixed part 34: Guide parts 41,42,44,46: Annular groove 43: Upper support shell 45: Lower support shell 47,48:Open your mouth 49:Through hole 50:bolt 51:Through hole 52:bolt 101:Base 102:Multilayer film 103:Level 1 104:Layer 2 105: Foreign material interface 231: Pillar body 232:Protrusion 233: Fixed pin 241: Fixed pin 242:Slot 243:Open your mouth 244:Open your mouth 251: Fixed pin 252:Slot 253:Open your mouth 254:Open your mouth 321:Fixing hole 322,332: slot 331:Fixing hole 341:Fixing hole 342:Through groove

FIG. 1 is a cross-sectional view showing the structure of a heating element having a first layer and a second layer common to each embodiment. Fig. 2 is an explanatory diagram for explaining the generation of excess heat. Fig. 3 is a schematic diagram of the heat utilization system of the first embodiment. FIG. 4 is an exploded perspective view of the heating module of the heat utilization system shown in FIG. 3 . FIG. 5 is an exploded perspective view of the heating structure included in the heating module shown in FIG. 4 . FIG. 6 is a top view of the fixing part of the heating structure shown in FIG. 5 . FIG. 7 is a cross-sectional view of the heating module shown in FIG. 4 . Fig. 8 is a top view of the fixing portion of the heating structure according to another example. FIG. 9 is an exploded perspective view of the heating module included in the heat utilization system of the second embodiment. FIG. 10 is an exploded perspective view of the heating structure included in the heating module shown in FIG. 9 . FIG. 11 is a cross-sectional view of the heating module shown in FIG. 9 .

21: Heating structure

31: Coiled heating element

32: Upper fixed part

33: Lower fixed part

34: Guide parts

322,332: slot

342:Through groove

Claims (11)

A heating device including: A wound heating element, which is formed by winding a plate-like member composed of a multi-layer film that generates heat due to the absorption and release of hydrogen; and The fixing part has a spiral groove for fixing the end of the winding axis direction of the winding heating element. The heating device of claim 1, wherein the above-mentioned coiled heating system is configured in such a manner that at least part of it is exposed. The heating device according to claim 1, wherein the fixing parts are formed in pairs, and the grooves provided in the pairs of fixing parts are for fixing both axial ends of the wound heating element. The heating device according to claim 3, wherein the pair of fixing parts are fixed using pillars provided on the outside of the wound heating element. The heating device according to claim 3, wherein the pair of said fixing parts are fixed using a columnar member provided on the inner side of the said wound heating element. The heating device of claim 1, wherein the groove length of the groove is longer than the winding length of the wound heating element. The heating device according to claim 1 further includes a guide disposed in the middle of the axial direction of the wound heating element and including a spiral-shaped through groove that holds the wound heating element. The heating device of claim 7, wherein the size of the through-slot is equal to the size of the slot of the fixing part. The heating device according to any one of claims 1 to 8, wherein the fixing part is made of non-metallic material. The heating device of claim 9, wherein the fixing portion is made of ceramic. A heat utilization system including: the heating device according to any one of claims 1 to 10; and a heat utilization device that uses a heat medium heated by the heating device as a heat source.