JP4126236B2 - Heat storage device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a heat storage device that stores heat in a substance having a large specific heat and uses this sensible heat later.
[0002]
[Prior art]
Conventionally, the following heat storage devices are known. That is, the case of the heat storage device is filled with a heat storage material composed of solid magnesia and nitrate liquefied in a predetermined heat storage temperature range. A heater and a heat transfer tube for heating the heat storage material are embedded in the heat storage material. And the heat storage material in a case is heated with a heater, and in this state, water is supplied from one of the heat transfer tubes, heat is exchanged with the heat storage material, and is taken out as high temperature steam from the other heat transfer tube.
[0003]
[Problems to be solved by the invention]
However, the conventional heat storage device has the following problems. That is, since the heat transfer tube is directly embedded in the heat storage material, it is difficult to pull out the heat transfer tube from the heat storage material due to friction between the solid content of the heat storage material and the heat transfer tube, the weight of the solid heat storage material, or the like. Therefore, for example, when the heat transfer tube fails due to some cause such as stress corrosion cracking of the heat transfer tube due to chlorine ions or the like, the heat transfer tube cannot be replaced.
[0004]
Conventionally, when a heat transfer tube fails, there is no method other than replacing it with a new heat storage device.
The above-mentioned problem has also occurred in the heating means such as a heater.
[0005]
The present invention has been made in order to solve the above-mentioned problems, and the purpose of the present invention is to provide an on-site operation when a heat exchange means such as a heat transfer tube, a heating means such as a heater, or a temperature detection means such as a thermocouple fails. It is in providing the thermal storage apparatus which can perform those exchange work easily.
[0006]
Another object of the present invention is to provide a heat storage device capable of easily recycling the heat storage material in addition to the above object.
[0007]
[Means for Solving the Problems]
In order to solve the above-described problems, the invention according to claim 1 is configured to heat-exchange heat storage of the heat storage material while being disposed in the case and a heating unit that heats the heat storage material filled in the case. In the heat storage device containing the heat exchange means, a liquid material container for filling only the liquid heat storage material is provided in the case, and the liquid material storage chamber of the container includes the heating means, the heat exchange means, and the temperature detection means. The gist is that at least one means is accommodated.
[0008]
The gist of the invention according to claim 2 is that, in the heat storage device according to claim 1, the liquid material container is formed in a bottomed cylindrical shape.
Invention of Claim 3 makes it a summary to arrange | position the liquid material container with respect to the said case in the heat storage apparatus of Claim 1 or 2.
[0009]
The gist of the invention of claim 4 is that the liquid material container is detachably accommodated in the case.
Invention of Claim 5 is a heat storage apparatus as described in any one of Claims 1-4. WHEREIN: In parts other than a liquid material container in the said case, solid heat storage materials, such as magnesia, and a thermal storage temperature area | region The gist is that it is filled with a liquid heat storage material such as nitrate that is liquefied in a kneaded state.
[0010]
The invention according to claim 6 is the heat storage device according to any one of claims 1 to 5, wherein the liquid material container is provided with heating means, heat exchange means or temperature detection means stored in the container. The gist is that it is detachably accommodated.
[0011]
Invention of Claim 7 is the heat storage apparatus as described in any one of Claims 1-6, The heat exchanger tube as a heat exchange means arrange | positioned with the said liquid material container is connected with the joint. This is the gist.
[0012]
Invention of Claim 8 is a heat storage apparatus as described in any one of Claims 1-7. As a liquid material container which accommodates the said liquid heat storage material and a heat exchange means, a heating means, or a temperature detection means. The gist is that the inner container is detachably attached to the outer container as a case.
[0013]
The invention according to claim 9 is the heat storage device according to claim 8, wherein the storage chamber between the outer container and the inner container includes a solid heat storage material such as magnesia, and nitrate that liquefies in the heat storage temperature region. The gist is that the liquid heat storage material is filled in a kneaded state, and the inside container is filled with the liquid heat storage material such as nitrate.
[0014]
According to a tenth aspect of the present invention, in the heat storage device according to the ninth aspect, the inner container has a small hole, a slit, or a mesh as a passage that prevents passage of the solid heat storage material and allows passage of the liquid heat storage material. The gist is that it is formed.
[0015]
The invention according to claim 11 is the heat storage device according to any one of claims 1 to 10, wherein the liquid material container is formed in a flat cylindrical shape, and the liquid material container has a U-shape as a heating means. The gist is that a heater having a shape is accommodated.
[0016]
The invention according to claim 12 is the heat storage device according to claim 11, wherein a height dimension of the heat generating portion of the heater is 50% to a height dimension of the heat storage material accommodated outside the liquid material container. The gist is that it is set to 65%.
[0017]
The invention according to claim 13 is the heat storage device according to any one of claims 1 to 12, wherein the liquid material container contains a thermocouple as temperature detecting means.
[0018]
The invention according to claim 14 is the heat storage device according to claim 1, wherein the case itself is a liquid material container.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
(First embodiment)
Hereinafter, an embodiment of a heat storage apparatus embodying the present invention will be described with reference to FIGS.
[0020]
As shown in FIG. 1, the outer container 12 as a stainless steel case constituting the heat storage device 11 includes a cylindrical portion 12a, a bottom plate 12b welded to a lower end opening of the cylindrical portion 12a, and an upper end of the cylindrical portion 12a. The lid plate 12c is fitted and fixed to the opening. Inside the outer container 12, an inner container 13 as a liquid material container having a bottomed donut cylindrical shape made of stainless steel is detachably accommodated. The inner container 13 includes a first cylinder 13a located outside, a second cylinder 13b located inside, a donut plate-like bottom plate 13c fixed by welding to lower end openings of the first cylinder 13a and the second cylinder 13b, It is comprised by. The bottom surface of the inner container 13 is lifted to a predetermined height position from the bottom plate 12b by a plurality of spacing holders 14. A plurality of spacing members 15 are interposed between the inner peripheral surface of the outer container 12 and the outer peripheral surface of the inner container 13. A storage chamber 16 for storing the heat storage material 18 is formed between the inner surface of the outer container 12 and the outer surface of the inner container 13. A storage chamber 17 as a liquid material storage chamber for storing the heat storage material 19 is also formed inside the inner container 13.
[0021]
The heat storage material 18 is composed of magnesia (magnesium oxide) as a solid heat storage material and nitrate (a mixture of sodium nitrate, sodium nitrite, potassium nitrate, etc.) as a liquid heat storage material liquefied in a heat storage temperature region. It is stored in the storage chamber 16 in a smelted state. The said heat storage material 19 is comprised only by the said nitrate liquefied in a heat storage temperature area | region.
[0022]
A stainless steel heat transfer tube 20 as a heat exchange means is detachably accommodated in the inner container 13. The heat transfer tube 20 includes a heat transfer tube introducing portion 20a that penetrates the lid plate 12c and is introduced into the inside. In addition, the heat transfer tube 20 includes a heat transfer tube meandering portion 20 b that meanders in the circumferential direction in the inner container 13. Further, the heat transfer tube 20 includes a heat transfer tube lead-out portion 20c that passes through the lid plate 12c and is led out to the outside. Water is supplied to the heat transfer tube introduction portion 20a of the heat transfer tube 20 from a water source (not shown), and the inside of the heat transfer tube meandering portion 20b is heated during the flow to become steam and from the heat transfer tube lead-out portion 20c. Supplied to the load device.
[0023]
Within the inner container 13, heaters 22 as heating means are detachably accommodated at a plurality of locations (three locations in this embodiment). The heater 22 is accommodated so as to be inserted into a valley portion of the heat transfer tube meandering portion 20b of the heat transfer tube 20, and is arranged in a vertically long hairpin shape when viewed from the side. The heater 22 includes a hairpin portion 22a having a vertically long U shape and a pair of terminal portions 22b and 22c at the upper end thereof. The terminal portions 22b and 22c are inserted into the lid plate 12c and connected to a power source (not shown). The terminal portions 22b and 22c of the heater 22 are previously held at a predetermined interval by an interval holder 24.
[0024]
Next, the operation of the heat storage device 11 will be described.
When the heater 22 is energized, the heat storage material 19 is heated by heat generation, and heat is stored. Due to the heating of the heat storage material 19, the heat storage material 18 inside the accommodation chamber 16 is heated via the plate of the inner container 13 itself. When the heat storage material 19 and the heat storage material 18 reach a predetermined heat storage temperature, the nitrate is dissolved. Although not shown, a heat insulating material such as calcium silicate is provided outside the outer container 12, so that heat radiation to the outside of the heat storage device 11 is effectively prevented.
[0025]
Then, when water as a heat medium is supplied from the heat transfer tube introduction portion 20a of the heat transfer tube 20, the water is heated by the heat stored in the heat storage materials 18 and 19 through the heat transfer tube 20 and becomes steam to become the heat transfer tube 20. The heat transfer tube lead-out part 20c above is discharged to the outside of the heat storage device 11. In this way, the heat stored in the heat storage material 18 and the heat storage material 19 is exchanged with water and extracted outside.
[0026]
Next, the work of dismantling the heat storage device 11 will be described.
The cover plate 12 c of the outer container 12 is removed, and the inner container 13 is pulled out from the outer container 12. The heat transfer tube 20 and the heater 22 are drawn upward from the inside of the inner container 13, and the heat transfer tube 20 and the heater 22 are separated and discarded. Thereafter, the inner container 13 is turned over to discharge the heat storage material 19 in the inner container 13 to the outside, the inner container 13 is separated and discarded, and the heat storage material 19 is used for recycling.
[0027]
Since the outer container 12 is pulled out of the inner container 13, a space is formed thereafter. Using this space, the heat storage material 18 is dropped into the space, and the filling density of the heat storage material 18 is made rough. Thereafter, the outer container 12 is turned over to scrape out the heat storage material 18, the outer container 12 is discarded, and the heat storage material 18 is recycled.
[0028]
According to the heat storage device 11 of the above embodiment, the following features can be obtained.
(1) In the above embodiment, the inner container 13 is accommodated in the outer container 12, and the heat transfer tube 20 is accommodated in the inner container 13. For this reason, when the heat transfer tube 20 fails due to some cause such as stress corrosion cracking of stainless steel due to chlorine ions or the like, the replacement can be easily performed. That is, the heat storage material 19 in the inner container 13 is melted by the heater 22, and the heat transfer tube 20 is pulled up together with the heater 22 in this state. Since the pulling operation is performed in the heat storage material 19 containing only solid nitrate without any solid matter, the pulling resistance is extremely small, and the work of burying the new heat transfer tube 20 in the molten nitrate can be performed without resistance. it can. Therefore, the replacement work of the old and new heat transfer tubes 20 can be easily performed. In addition, assuming that the heat transfer tube 20 has failed, it is not necessary to provide a spare heat transfer tube, and the cost increase of the heat storage device 11 can be suppressed.
[0029]
(2) In the above embodiment, the heater 22 is housed in the inner container 13 in addition to the heat transfer tube 20, and therefore the replacement work of the heater 22 is the same as in the above (1) even when the heater 22 fails for some reason. It can be easily performed by the operation of. Further, it is not necessary to provide a spare heater assuming that the heater 22 has failed, and from this point, the cost increase of the heat storage device 11 can be suppressed.
[0030]
(3) In the above embodiment, since the inner container 13 is detachably attached to the outer container 12, the heat storage device 11 ends the product life and heats the heat storage materials 18 and 19 when they are discarded. In this state, the inner container 13 can be easily pulled out from the outer container 12. Accordingly, the heat storage material 18 accommodated in the storage chamber 16 between the outer container 12 and the inner container 13 can be easily taken out, and the heat storage material 18 can be recycled.
[0031]
(4) In the above embodiment, since the inner container 13 is hermetically formed of stainless steel, particulate magnesia contained in the heat storage material 18 on the storage chamber 16 side enters the storage chamber 17 of the inner container 13. Can be prevented. In addition to avoiding damage due to contact between the heat transfer tube and the heater and magnesia, the reliability can be improved, and the efficiency of replacement work can be improved. In particular, the heat transfer tube expands and contracts because water is supplied to the inside of the heat transfer tube. However, since the heat transfer tube exists in the liquid heat storage material, the expansion and contraction operation can be easily absorbed and the displacement is not affected. The expansion and contraction operation is smoothly repeated without receiving any damage. In the case of a solid heat storage material, the expansion and contraction operation of the heat transfer tube is restricted, and abnormal deformation or the like occurs in the heat transfer tube.
[0032]
(5) In the said embodiment, the heat exchanger tube 20 and the heater 22 were accommodated in the storage chamber 17 of the inner side container 13, and the heat storage material 19 which consists of nitrate was filled. For this reason, the gap between the heat transfer tube 20 and the heater 22 and the inner surface of the inner container 13 is filled with nitrate. Therefore, compared to the case where an air layer is formed between the heat transfer tube 20 and the heater 22 and the inner surface of the inner container 13, the heat of the heater 22 is efficiently conducted to the heat storage material 18, and the empty space of the heater 22 is Can prevent whispering. Conversely, the heat stored in the heat storage material 18 during heat exchange can be efficiently transferred from the heat storage material 18 to the heat transfer tube 20 via the heat storage material 19 in the inner container 13.
[0033]
(6) In the above embodiment, since only the liquid heat storage material 19 is accommodated in the inner container 13, convection of the heat storage material 19 occurs in the heat storage temperature region in the inner container 13, and heat storage or heat exchange is performed quickly. Can do.
[0034]
(7) In the above embodiment, since the heater 22 is disposed close to the valley portion of the meandering portion of the heat transfer tube 20, the heat transfer tube 20 can be easily operated by the heating operation of the heater 22 even when the heat storage temperature is lowered. Heat can be applied to the food and it can be cooked.
[0035]
(8) In the said embodiment, since it has a liquid heat storage material with respect to the inner side container 13, the heat exchanger tube 20 and the heater 22 can be removed easily, and this inner side container 13 itself is also the outer side container 12. Can be easily removed. For this reason, it becomes possible to repair and replace each component, and it is possible to avoid waste such as discarding the entire apparatus and replacing it with a new one as seen in the past. In addition, it is very easy to dispose of and dismantle the heat storage device in the future. In addition, it is possible to reliably and easily collect expensive nitrate, which is a heat storage material in the inner container 13, and use products that are very useful for recycling. It can be said that it is a form.
[0036]
(Second Embodiment)
A second embodiment embodying the present invention will be described with reference to FIGS. In addition, since 2nd Embodiment is the structure which changed the shape and number of each component of the thermal storage apparatus of 1st Embodiment, the detailed description is abbreviate | omitted about the same part.
[0037]
In the second embodiment, the outer container 12 is formed in a bottomed rectangular tube shape, and the inner container 13 is formed in a bottomed flat rectangular tube shape. Further, the inner container 13 is accommodated in a plurality of places (for example, three places) in the outer container 12 so as to be independently removable in the vertical direction. As shown in FIG. 4, each inner container 13 is supported by a stainless steel support fitting 31 and is prevented from being displaced in the width direction. Inside these inner containers 13, heat transfer tubes 20 formed in a serpentine shape are accommodated independently and detachably. A heater 22 is disposed in a valley portion of the meandering portion of each heat transfer tube 20. A flange joint 32 is fixed to each heat transfer tube introduction portion 20a or heat transfer tube lead-out portion 20c by welding. A gasket (not shown) is interposed between the flange joints 32 and 32, and the heat transfer tubes 20 to 20 are connected in series with each other by tightening and fixing the flange joints 32 and 32 with bolts and nuts. .
[0038]
Since the cover plate 12c is formed of a single plate material, the heat transfer tube introduction portion 20a and the heat transfer tube lead-out portion 20c of the heat transfer tube 20 are first formed in a straight line, penetrated through the cover plate 12c, and then bent. Then, the flange joint 32 is welded. It replaces with this and after connecting each heat exchanger tube 20 with flange joint 32, it is good also considering the cover plate 12c divided and formed in plurality as one cover plate.
[0039]
Therefore, according to the second embodiment, the following features can be obtained in addition to the features described in the first embodiment.
(1) In the said embodiment, the several inner container 13 was accommodated in the outer container 12, and the heat exchanger tube 20 was accommodated separately with respect to each inner container 13, respectively. For this reason, only the damaged heat transfer tube 20 can be replaced partially, and the maintenance cost can be reduced.
[0040]
(2) In the above embodiment, the lower end portions of the plurality of inner containers 13 are supported by the common support fitting 31 so as not to be displaced. For this reason, the number of parts supporting the plurality of inner containers 13 can be reduced.
[0041]
In addition, this invention is not limited to the said embodiment, It can change and implement as follows, and a detailed effect is further added to the effect of the said embodiment as a heat storage apparatus.
[0042]
-Another example shown in FIG. 6 changes the structure of the heater 22 accommodated in the said inner side container 13. As shown in FIG. That is, when the height dimension L1 of the heat generating portion 22d provided in the lower half of the heater 22, the height dimension L2 of the heat storage material 19 accommodated in the inner container 13, and the height dimension L3 of the heat storage material 18 are assumed. The following relational expressions are established between the dimensions.
[0043]
L1 = L3 × 50 to 65% (1)
L2 <L3 (2)
The L1 is preferably 60%.
[0044]
In this other example, the following effect can be expected from the relational expression (1). That is, since the lower portion of the heat storage material 19 in the height direction is first heated by the heat generating portion 22d, heat convection occurs inside the inner container 13 due to this heat, and the heat storage material 19 in the inner container 13 as a whole. Will be heated uniformly. Therefore, the heat storage material 18 accommodated in the outer container 12 is also heated up and down uniformly, and the heat storage efficiency can be improved.
[0045]
The other example shown in FIGS. 7 and 8 is configured by connecting the inner container 13 to a pair of left and right plates 35 and 36 by bolts 37 and nuts 38. Spacers 39 are interposed between both ends of the plates 35 and 36, respectively, and a fine gap G of 0.5 mm, for example, is formed. Only the nitrate as the liquid heat storage material contained in the heat storage material 18 enters the inside of the inner container 13 through the gap G. On the upper surface of the bottom plate 12b of the outer container, an attachment frame 40 for holding the lower end portion of the inner container 13 in a predetermined position is attached to the bottom plate 12b by, for example, welding. In this case, the liquid heat storage material contained in the heat storage material 18 can be used as it is in the nitrate contained in the inner container 13, and the filling operation of the nitrate into the inner container 13 is simplified.
[0046]
In another example shown in FIGS. 6, 7, and 8, the cross section (see FIG. 8) of the inner container 13 has a hexagonal shape along the vertically long U-shape of the heater 22. In this case, the long sides 13d and 13e do not dent in the direction close to each other against the external pressure due to thermal expansion or the like of the heat storage material 18, and when the heater 22 is replaced, the dent and the hairpin portion 22a The trouble due to is eliminated. The replacement work is further simplified by combining the ease of inserting and removing the heater 22 with the original liquid heat storage material and this effect.
[0047]
In another example shown in FIGS. 9 and 10, a thermocouple 42 as a temperature detecting means is accommodated in the inner container 13. In the inner container 13, a pair of left and right plates 43, 44 are connected to each other by a bolt 37 and a nut 38 with a minute gap G interposed therebetween, thereby forming a housing portion 45 for housing the thermocouple 42. Only the nitrate as the liquid heat storage material contained in the heat storage material 18 enters the inside of the inner container 13 through the gap G. In this case, when exchanging the thermocouple 42, the upper container 12 can be smoothly pulled out and returned.
[0048]
In this alternative example, the thermocouple 42 is described as the temperature detection means in the heat storage material 18, but when used as the temperature detection means of the heater 22, as shown in FIG. 7 and FIG. The same effect as described above can be obtained by installing in the inner container 13 together.
[0049]
-As shown in FIG. 11, you may form the inner side container 13 in the taper shape which becomes narrow as a lower end. In this case, when the inner container 13 is pulled upward from the outer container 12, the operation can be performed smoothly.
[0050]
-As shown in FIG. 12, you may provide the inner side container 13 which accommodates the heat exchanger tube 20, and the inner side container 13 'which accommodates the heater 22, respectively. In this case, when the heat transfer tube 20 breaks down, it is not necessary to remove the heater 22 at the time of replacement work, so that the heat transfer tube 20 can be easily replaced.
[0051]
As shown in FIG. 13, a flange joint 51 is connected to the upper ends of the heat transfer pipe introduction part 20 a and the heat transfer pipe lead-out part 20 c of the heat transfer pipe 20, and a connection pipe 52 formed in a U shape with respect to the flange joint 51. You may make it connect the flange joint 53 provided in both ends. In this case, the heat transfer tube introduction portion 20a and the heat transfer tube lead-out portion 20c can be connected by the connection tube 52 without being bent.
[0052]
As shown in FIG. 14, only one outer container 12 may be used, and the liquid heat storage material 19, the heat transfer tube 20, and the heater 22 may be accommodated in the outer container 12.
In this other example, since the inner container is not required, the structure can be simplified, and the heat storage material 19 and the heater 22 can be easily replaced.
[0053]
As shown in FIG. 15, you may form the fine small hole 13f which permeate | transmits only the liquid heat storage material 19 with respect to the surface of the said inner side container 13. As shown in FIG.
As shown in FIG. 16, a mesh-like metal net 41 may be joined to the lower end opening of the inner container 13, and only the liquid heat storage material 19 may be transmitted through the metal net 41.
[0054]
-As shown in FIG. 17, you may form the said inner side container 13 whole with a metal-mesh.
As shown in FIG. 18, the inner container 13 may be formed in a cylindrical shape, and a heater 22 formed in a linear shape may be accommodated in the inner container 13.
[0055]
A heater 22 as a heating unit may be embedded in the storage chamber 16 inside the outer container 12.
The inner container 13 may be fixed to the outer container 12.
[0056]
The liquid storage material 19, the heat transfer tube 20 and the heater 22 may be stored in the storage chamber 16, and the solid and liquid heat storage material 18 may be stored on the storage chamber 17 side.
In the first embodiment, the inner container 13 may be provided concentrically at a plurality of locations.
[0057]
The outer container 12 may be formed in a bottomed cylindrical shape, and the inner container 13 may be formed in a flat cylindrical shape.
-In 2nd Embodiment, you may make it connect the heat exchanger tube 20 by welding.
[0058]
The accommodation chamber 17 of the inner container 13 may be narrowed so that the heat transfer tube 20 and the heater 22 are accommodated without filling the gap with nitrate.
-The passage of magnesia particles can be prevented from passing through the inner container 13, and a fine passage through which liquefied nitrate can pass may be formed. In this case, heat conduction between the heat storage material 18 and the heat storage material 19 is efficiently performed.
[0059]
Technical ideas other than the claims ascertained from the above embodiment will be described below. (Technical thought 1) The heat storage device according to any one of claims 8 to 13, wherein a gap holder is interposed between the outer container and the inner container.
[0060]
(Technical thought 2) The heat storage device according to any one of claims 8 to 10, wherein the outer container is formed in a bottomed cylindrical shape, and the inner container is formed in a bottomed donut cylindrical shape.
[0061]
【The invention's effect】
As described in detail above, the inventions according to claims 1 to 14 easily perform replacement work of at least one of heat exchange means such as a heat transfer tube, heating means such as a heater, or temperature detection means such as a thermocouple. be able to.
[0062]
The invention according to claim 2 can simplify the configuration of the liquid material container in addition to the above-described effects.
Since the invention according to claim 3 is provided with a plurality of liquid material containers, the heat exchanging means, the heating means or the temperature detecting means are respectively accommodated independently, and the heat exchanging means, the heating means or the temperature which needs to be exchanged are accommodated. Only detection can be efficiently exchanged.
[0063]
In the invention according to claim 4, by removing the liquid material container from the case, the heat exchanging means, the heating means or the temperature detecting means in the liquid material container can be easily replaced. The heat storage material can be easily replaced and recycled.
[0064]
In the invention according to claim 5, in the case, the solid heat storage material such as magnesia and the liquid heat storage material such as nitrate liquefied in the heat storage temperature region are filled in a kneaded state in a portion other than the liquid material container. Therefore, the heat storage efficiency can be improved.
[0065]
According to the sixth aspect of the present invention, it is possible to easily remove the heating means, heat exchange means or temperature detection means from the liquid material container.
According to the seventh aspect of the present invention, the replacement work of the heat transfer tubes as the heat exchange means can be performed at low cost.
[0066]
The invention according to claim 8 can remove the inner container from the outer container, easily take out the heat storage material, and recycle the heat storage material.
In the ninth aspect of the invention, since the liquid heat storage material convects inside the inner container, heat storage or heat exchange operation can be performed quickly.
[0067]
In the invention according to claim 10, since the liquid heat storage material enters and exits through a small hole, slit or mesh provided in the inner container, heat conduction between the heat storage material in the outer container and the heat storage material in the inner container is efficient. Done.
[0068]
According to the eleventh aspect of the present invention, the heater can be easily replaced. According to the twelfth aspect of the present invention, the heat storage operation by the heater of the heat storage material filled in the case can be appropriately performed, the heat storage temperature can be made uniform, and the heat storage efficiency can be improved.
[0069]
According to the invention of claim 13, the exchanging operation of the thermocouple can be easily performed.
In the invention according to the fourteenth aspect, the structure can be simplified by combining the function of the liquid material container with the case, and the container can be easily manufactured.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a first embodiment of a heat storage device of the present invention.
2 is a cross-sectional plan view of the heat storage device of FIG. 1. FIG.
3 is a perspective view showing a state where a cover plate of the heat storage device of FIG. 1 is removed. FIG.
FIG. 4 is a longitudinal sectional view showing a second embodiment of the heat storage device of the present invention.
5 is a perspective view showing a state where a cover plate of the heat storage device of FIG. 4 is removed. FIG.
FIG. 6 is a partial longitudinal sectional view showing another example of the heat storage device of the present invention.
FIG. 7 is a partial longitudinal sectional view showing another example of the heat storage device of the present invention.
8 is a plan sectional view of FIG. 7. FIG.
FIG. 9 is a longitudinal sectional view showing another example of the heat storage device of the present invention.
10 is a cross-sectional plan view of an inner container that houses the thermocouple shown in FIG. 9. FIG.
FIG. 11 is a schematic longitudinal sectional view showing another example of the heat storage device of the present invention.
FIG. 12 is a schematic cross-sectional plan view showing another example of the heat storage device of the present invention.
FIG. 13 is a schematic longitudinal sectional view showing another example of the heat storage device of the present invention.
FIG. 14 is a schematic longitudinal sectional view showing another example of the heat storage device of the present invention.
FIG. 15 is a perspective view showing another example of the inner container and the heater.
FIG. 16 is a perspective view showing another example of the inner container.
FIG. 17 is a perspective view showing another example of the inner container.
FIG. 18 is a perspective view showing another example of the inner container and the heater.
[Explanation of symbols]
L1, L2, L3 ... Height dimension, 11 ... Heat storage device, 12 ... Outer container, 13 ... Inner container, 13f ... Small hole, 16, 17 ... Storage chamber, 18, 19 ... Heat storage material, 20 ... Heat transfer tube, 22 ... heater, 22d ... heat generating part, 42 ... thermocouple.

Claims (14)

In the heat storage device that houses the heat storage means that heats the heat storage material filled in the case and the heat exchange means that is disposed in the case and exchanges heat of the heat storage material,
A heat storage device in which a liquid material container for filling only a liquid heat storage material is provided in the case, and at least one of the heating means, heat exchange means, and temperature detection means is accommodated in the liquid material storage chamber of the container. The heat storage device according to claim 1, wherein the liquid material container is formed in a bottomed cylindrical shape. The heat storage device according to claim 1, wherein a plurality of liquid material containers are arranged with respect to the case. The heat storage device according to claim 1, wherein a liquid material container is detachably accommodated in the case. 5. A portion other than the liquid material container in the case is filled with a solid heat storage material such as magnesia and a liquid heat storage material such as nitrate that is liquefied in a heat storage temperature region in a kneaded state. The heat storage device according to any one of the above. The heat storage device according to any one of claims 1 to 5, wherein a heating unit, a heat exchange unit, or a temperature detection unit stored in the container is detachably stored in the liquid material container. The heat storage device according to any one of claims 1 to 6, wherein a plurality of heat transfer tubes as heat exchange means arranged together with the liquid material container are connected by a joint. The inner container as a liquid material container that accommodates the liquid heat storage material and heat exchange means, heating means, or temperature detection means is detachably attached to the outer container as a case. The heat storage device according to one item. The storage chamber between the outer container and the inner container is filled with a solid heat storage material such as magnesia and a liquid heat storage material such as nitrate that is liquefied in the heat storage temperature region, and the inside of the inner container The heat storage device according to claim 8, which is filled with a liquid heat storage material such as nitrate. The heat storage device according to claim 9, wherein a small hole, a slit, or a mesh is formed in the inner container as a passage that prevents passage of the solid heat storage material and allows passage of the liquid heat storage material. The said liquid material container is formed in a flat cylinder shape, The heat storage apparatus as described in any one of Claims 1-10 in which the heater which makes U shape as a heating means is accommodated in this liquid material container. The heat storage device according to claim 11, wherein a height dimension of the heat generating portion of the heater is set to 50% to 65% of a height dimension of the heat storage material accommodated outside the liquid material container. The heat storage device according to any one of claims 1 to 12, wherein a thermocouple as a temperature detecting means is accommodated in the liquid material container. The heat storage device according to claim 1, wherein the case itself is a liquid material container.

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