JP2006226628A - Heat storage device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the pressure loss of a fluid and further improve the heat exchange efficiency between a heat storage material and a fluid while reducing the cost of the heat storage device.
A heat storage device (10) includes a heat storage module (11) provided with a heat storage material filling space (30) filled with a heat storage material and a fluid passage (40) passing a fluid adjacent to the heat storage material filling space. . The heat storage module is composed of a plurality of stacked flat plates 20. The plurality of plates include a groove-shaped fluid passage formed on one surface and a groove-shaped heat storage material filling space formed on the other surface. A pair of adjacent plates overlap each other so that surfaces having fluid passages face each other. When the plate is viewed from the surface direction, the fluid passage of the other plate is substantially orthogonal to the fluid passage of one plate. The fluid passages orthogonal to each other communicate with each other at orthogonal positions.
[Selection] Figure 1

Description

  The present invention relates to a heat storage device of a type in which heat energy is exchanged between a heat storage material and a heat exchange fluid.

2. Description of the Related Art In recent years, development of a heat storage device that promotes effective use of energy by applying thermal energy stored in a heat storage material to a heat exchange fluid such as cooling water has been advanced. For example, in an engine, while a lot of waste heat is generated during driving, startup is smoothed by applying a heat amount at the time of starting. By adopting the heat storage device, it is possible to store the waste heat that is being driven and use it for warming up at the start. A technique for increasing the heat transfer efficiency of such a heat storage device is also known (see, for example, Patent Document 1-2).
Various techniques for improving the heat transfer efficiency of a general heat exchanger are also known (see, for example, Patent Document 3).
JP 2004-271119 A Japanese Patent Laid-Open No. 2003-336979 JP-A-5-149687

A conventional heat storage device shown in Patent Document 1 will be described with reference to FIG.
FIGS. 11A to 11C are schematic views of a first conventional heat storage device. (A) shows the cross-sectional configuration of the heat storage device viewed from the side, (b) shows the planar configuration of the heat storage plate and the double tube, and (c) shows the cross-sectional configuration of the heat storage plate (the double tube is omitted). ).

  As shown in FIG. 11, a conventional heat storage device 100 accommodates a plurality of hollow disk-shaped heat storage plates 102... In addition, the double pipe 104 is penetrated through the heat storage plates 102 at the center of the cylindrical sealed tank 101. The heat storage plate 102 is a sealed container in which the heat storage material Ah is sealed in the internal space.

  The fluid Flu introduced from the inflow port 105 enters the outer tube 106 of the double tube 104 and radiates from a large number of openings (not shown) on the outer peripheral surface of the outer tube 106 as indicated by arrows f1. It flows out and exchanges heat with the heat storage material Ah while flowing through the gaps 107 between the heat storage plates 102, 102, rises as shown by arrows f2, and enters the inner tube 108 of the double tube 104, and Derived from the outlet 109.

  According to the conventional heat storage device 100, the heat exchange efficiency between the heat storage material Ah and the fluid Flu is increased to some extent by disturbing the fluid Flu flowing through the gaps 107 by the large number of spacers 103. be able to. However, since the fluid Flu is only applied to the small hemispherical spacers 103... Protruding from the surface of the heat storage plate 102, it is not easy to make the fluid Flu uniformly turbulent. In order to increase the heat exchange efficiency with such a configuration, there is room for improvement. In order to further increase the heat exchange efficiency, for example, it is conceivable to adopt the conventional technique shown in Patent Document 2 or Patent Document 3.

Next, a conventional heat storage device disclosed in Patent Document 2 will be described with reference to FIG.
12A to 12C are schematic views of a second conventional heat storage device. (A) shows the cross-sectional structure of the thermal storage apparatus seen from the side, (b) shows typically the principal part of a thermal storage apparatus, (c) decomposes | disassembles and shows the principal part of a thermal storage apparatus.

As shown in FIG. 12, the conventional heat storage device 200 is configured such that a plurality of flat plate-like units 202. The unit 202 includes three stacked plate members, that is, a first plate member 203, a second plate member 204, and a third plate member 205.
Each of these plate members 203, 204, and 205 has a flat recess 203a, 204a, or 205a on the upper surface. As a result, the heat storage material filling space 206 is provided in the recess 203a of the first plate member 203, the exhaust heat hot water passage 207 is provided in the recess 204a of the second plate member 204, and the hot water supply passage 208 is provided in the recess 205a of the third plate member 205. Can be provided.
As shown in FIG. 12C, the recess 203a of the first plate 203 is provided with the first heat transfer fin 211, the recess 204a of the second plate 204 is provided with the second heat transfer fin 212, and the third The recess 205 a of the plate member 205 includes third heat transfer fins 213. These heat transfer fins 211 to 213 have a corrugated shape.

  As shown in FIG. 12B, the exhaust heat hot water We flowing through the exhaust heat hot water passage 207 exchanges heat with the hot water Wi flowing through the heat supply water passage 208, and the heat storage material Ah in the heat storage material filling space 206. Heat exchange can be performed. Further, the hot water Wi flowing through the hot water passage 208 can exchange heat with the heat storage material Ah in the heat storage material filling space 206 while exchanging heat with the exhaust heat hot water We.

  According to the conventional heat storage device 200, the heat exchange efficiency can be increased to some extent by providing the first, second, and third heat transfer fins 211 to 213. However, since the heat transfer fins 211 to 213 are provided, the manufacturing cost increases. Further, as the heat transfer fins 211 to 213 are provided, the entire heat storage device 200 becomes larger and the weight increases. In addition, since the fluid is passed between the large heat transfer fins 211 to 213, the degree of increase in the pressure loss of the fluid is extremely large as compared with the degree of improvement in the heat exchange efficiency.

Next, as a technique for improving the heat transfer efficiency of a general heat exchanger, the conventional technique shown in Patent Document 3 will be described with reference to FIG.
FIGS. 13A and 13B are schematic views of a conventional heat exchanger. (A) shows the decomposed heat exchanger, and (b) shows the cross-sectional configuration of the heat exchanger.

  As shown in FIG. 13, a conventional heat exchanger 300 has a pair of upper and lower heat transfer plates 301 and 301 facing each other through a fixed space 302 (fluid passage 302), and further upper and lower heat transfer plates 301 and 301. The heat transfer area with the fluid flowing through the fluid passage 302 is secured by extending a number of subdivided heat transfer fins 303 to the other plate 301 through the fluid passage 302 to each other. It is. According to such a conventional heat exchanger 300, the fluid that has passed between the heat transfer fins 303 is formed by regularly inclining the heat transfer fins 303 in the fluid flow direction or the reverse direction. Can generate turbulent flow. As a result, the heat exchange efficiency can be increased.

  However, in such a conventional heat exchanger 300, since it is necessary to provide a large number of subdivided heat transfer fins 303 on the upper and lower heat transfer plates 301, 301, the manufacturing cost increases. In addition, the heat exchanger 300 as a whole is increased in size and weight due to the provision of the large number of heat transfer fins 303. In addition, since the fluid is passed between the large heat transfer fins 303..., The degree of increase in the pressure loss of the fluid is extremely large compared to the degree of improvement in the heat exchange efficiency.

  As is clear from the above description, the technology of the conventional heat storage device 200 shown in FIG. 12 or the conventional heat exchanger 300 shown in FIG. 13 can be directly adopted for the conventional heat storage device 100 shown in FIG. There is room for further improvement.

  This invention makes it a subject to provide the technique which raised the heat exchange efficiency between the thermal storage material and the fluid while suppressing the pressure loss of the fluid, aiming at the cost reduction of a thermal storage apparatus.

The invention according to claim 1 includes a heat storage module provided with a heat storage material filling space for filling the heat storage material and a fluid passage through which the fluid passes adjacent to the heat storage material filling space, and heat is generated between the heat storage material and the fluid. In a heat storage device that exchanges energy,
The heat storage module is composed of a plurality of stacked flat plates,
Each of the plurality of plates includes a groove-like fluid passage formed on one surface, and a groove-like heat storage material filling space formed on the other surface,
Among a plurality of plates, a pair of adjacent plates are overlapped so that surfaces having fluid passages face each other,
When these pair of plates are viewed from the surface direction, the fluid passages of the other plate are substantially orthogonal to the fluid passages of one plate,
These fluid passages orthogonal to each other are communicated at orthogonal positions.

  According to a second aspect of the present invention, in the first aspect, the plurality of plates are quadrilateral plates each having a plurality of fluid passages, and the plurality of fluid passages face each other out of the four sides of the quadrilateral. A substantially linear passage extending between the two sides is characterized.

  According to a third aspect of the present invention, in the second aspect, the heat storage device includes a fluid introduction header that faces two sides sandwiching one corner of the quadrilateral and a fluid derivation header that faces two other sides different from the two sides. The fluid introduction header is communicated with each one end of each fluid passage formed on a plurality of plates and orthogonal to each other, and the fluid lead-out header is communicated with each other end of each fluid passage orthogonal to each other. It is configured as described above.

  According to a fourth aspect of the present invention, in the third aspect, the end of the heat storage material filling space and the plurality of fluid passages are provided between the fluid introduction header and the plurality of plates and between the fluid lead-out header and the plurality of plates. The present invention is characterized in that a blocking plate for blocking between the ends is provided.

  The invention according to claim 5 is characterized in that, in claim 2, the positions at which the plurality of fluid passages are orthogonal and communicate with each other are a plurality of positions arranged at a constant pitch.

  The invention according to claim 6 is the invention according to any one of claims 1 to 5, wherein when the other plate is turned upside down and the phase is changed by 90 ° with respect to the one plate, It is the member used as the same shape, It is characterized by the above-mentioned.

In the invention according to claim 1, a pair of adjacent plates is provided with groove-like fluid passages on each side of the plurality of stacked plates, and the surfaces having the fluid passages face each other. When the two plates are overlapped and the pair of plates are viewed from the surface direction, the fluid passages of the other plate are substantially orthogonal to the fluid passages of one plate, and further, the fluid passages orthogonal to each other are By communicating at positions orthogonal to each other, the fluids flowing through the fluid passages orthogonal to each other can be vigorously mixed at the orthogonal positions. That is, by the flow of fluids orthogonal to each other, a vortex that vortexes in a substantially constant direction can be generated in the fluid.
Since the fluid becomes a vortex in this way, the heat transfer efficiency between the heat storage material and the fluid is increased, so that the heat transfer area can be reduced accordingly. Since the heat transfer area is reduced, the heat storage device can be reduced in size and weight.
In addition, fluid pressure loss occurs because fluids flowing in mutually perpendicular fluid passages are vigorously mixed at orthogonal positions to generate vortices that vortex in a certain direction (vortices opposite to each other). Can be suppressed. Therefore, it is possible to provide a high-performance heat storage device that increases the heat transfer efficiency and suppresses the pressure loss of the fluid.
Furthermore, the fluid can be easily swirled by a simple configuration in which the fluid passages orthogonal to each other are communicated at positions orthogonal to each other. A heat storage device with good heat transfer efficiency can be produced at low cost.
In this way, the heat exchange efficiency between the heat storage material and the fluid can be further increased while reducing the cost of the heat storage device.

  In the invention according to claim 2, in the plurality of quadrilateral plates, the plurality of fluid passages are formed so as to extend substantially linearly between the two sides facing each other, so that the stacked plates are orthogonal to each other. A plurality of fluid passages can be easily communicated with each other at crossing positions. In addition, the configuration for communication can be simplified.

In the invention according to claim 3, since the fluid introduction header faces two sides sandwiching one corner of the quadrilateral, the fluid introduction header is formed at each end of each fluid passage formed on a plurality of plates and orthogonal to each other. Can be communicated. Therefore, it is possible to distribute the fluid from one fluid introduction header to each end of each fluid passage that is orthogonal to each other.
Further, since the fluid outlet header faces the other two sides different from the two sides, the fluid outlet header can be communicated with each other end of each fluid passage orthogonal to each other. For this reason, the fluid can be collected and led out from each other end of each fluid passage orthogonal to each other to one fluid lead-out header.
In this way, only one member is required to introduce or lead out the fluid with respect to the plurality of fluid passages orthogonal to each other. For this reason, it can be set as a simple thermal storage apparatus with few parts.

  In the invention according to claim 4, the end of the heat storage material filling space is formed by a simple configuration in which a blocking plate is provided between the fluid introduction header and the plurality of plates and between the fluid outlet header and the plurality of plates. And the end of the fluid passage adjacent to the heat storage material filling space can be easily blocked.

  In the invention according to claim 5, since the plurality of fluid passages are orthogonal to each other and communicated with each other at a constant pitch, a vortex can be generated at a constant pitch with respect to the fluid flowing through the fluid passage. Since the generation | occurrence | production location of a eddy current increases, the heat transfer efficiency between a thermal storage material and a fluid can be improved more.

  In the invention according to claim 6, when the other plate of the pair of plates is turned upside down and the phase is changed by 90 ° with respect to the one plate, the same shape as the one plate is obtained. One plate and the other plate can be shared. Therefore, any one plate may be prepared. For this reason, the kind of member which comprises a thermal storage apparatus can be suppressed, As a result, reduction of manufacturing cost can be aimed at.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is an exploded view of a heat storage device according to the present invention. As shown in FIG. 1, the heat storage device 10 includes a heat storage module 11, a bottom plate 12 that closes the lower surface of the heat storage module 11, a lid plate 13 that closes the upper surface of the heat storage module 11, and a fluid introduction header 60 that closes the side surface of the heat storage module 11. In addition, the fluid outlet header 70 and four blocking plates 80... Interposed between the side surface of the heat storage module 11 and the headers 60, 70.

First, the heat storage module 11 will be described, and then the other members 12, 13, 60 to 80 will be described.
The heat storage module 11 includes a plurality of stacked flat plates 20 (... indicates a plurality; the same applies hereinafter), and includes a plurality of heat storage material filling spaces 30 ... and a plurality of fluid passages 40.・ ・ Integrated with The plates 20 will be described below.

  FIG. 2 is a perspective view showing the pair of plates in the heat storage module according to the present invention in an exploded state, corresponding to FIG. FIG. 3 is a plan view of a plurality of plates in the heat storage module according to the present invention.

  2 and 3, each of the plurality of plates 20 is a quadrilateral plate (plate). The quadrilateral is preferably a square (including a rectangle) in which all four interior angles are perpendicular, and more preferably a square. Hereinafter, the plurality of plates 20 will be described by taking a square configuration as an example.

  Here, as shown in FIG. 3, reference numerals are given to the four sides of the plate 20, and the first side 21, the second side 22, the third side 23, and the fourth side 24 are called clockwise in the figure. Of the four sides 21 to 24, the first side 21 and the third side 23 are two sides facing each other. Two other sides different from the two sides 21 and 23, that is, the second side 22 and the fourth side 24 are two sides facing each other.

  A corner 25 sandwiched between the first side 21 and the second side 22 is referred to as a first corner 25, a corner 26 sandwiched between the second side 22 and the third side 23 is referred to as a second corner 26, and the third side. A corner 27 sandwiched between the second side 24 and the fourth side 24 is referred to as a third corner 27, and a corner 28 sandwiched between the fourth side 24 and the first side 21 is referred to as a fourth corner 28. These corners 25-28 are all right angles.

  As shown in FIG. 2, of the pair of upper and lower plates 20, 20, the upper plate 20 is referred to as a first plate 20A, and the lower plate 20 is referred to as a second plate 20B. . The first plate 20A is one plate provided with a plurality of groove-shaped heat storage material filling spaces 30... And a plurality of groove-shaped fluid passages 40.

As shown in FIGS. 2 and 3, the plurality of heat storage material filling spaces 30 and the plurality of groove-like fluid passages 40 are substantially straight passages arranged in parallel to each other, one by one. They are arranged alternately. By arranging in this way, each fluid passage 40... Can be individually adjacent to each heat storage material filling space 30.
The plurality of heat storage material filling spaces 30 are arranged at a constant pitch, and the plurality of fluid passages 40 are also arranged at a constant pitch. These heat storage material filling spaces 30... And fluid passages 40... Extend through two sides facing each other, that is, from the first side 21 to the third side 23.

  On the other hand, the second plate 20B is the other plate that has the same shape as the first plate 20A when the front and back are reversed and the phase is changed by 90 ° with respect to the first plate 20A. In other words, the second plate 20B has a configuration in which exactly the same members as the first plate 20A are arranged in the opposite directions and the phase is changed by 90 °.

  As described above, when the second plate 20B of the pair of plates 20A and 20B is turned upside down and the phase thereof is changed by 90 ° with respect to the first plate 20A, the same shape as the first plate 20A is obtained. As a result, the first plate 20A and the second plate 20B can be shared. Therefore, any one plate may be prepared. For this reason, the kind of member which comprises the thermal storage apparatus 10 can be suppressed, As a result, reduction of manufacturing cost can be aimed at.

  Since the phase is changed by 90 °, when the pair of plates 20A and 20B are viewed from the surface direction (that is, when FIG. 3 is viewed from the front and back direction of the paper surface), the heat storage material filling space 30 in the first plate 20A. ... and the fluid passages 40 ..., the heat storage material filling spaces 30 ... and the fluid passages 40 ... in the second plate 20B are substantially orthogonal to each other. Note that the term “substantially orthogonal” includes those that are completely orthogonal.

  The plurality of heat storage material filling spaces 30... Have a plurality of heat storage material passage holes 32... Vertically penetrated at a constant pitch in the longitudinal direction (that is, penetrated in the plate thickness direction). . The heat storage material passage holes 32 are also heat storage material passage holes of the entire heat storage module 11.

4A and 4B are cross-sectional configuration diagrams of a plurality of plates according to the present invention. (A) is a figure showing the cross-sectional structure of the 4-4 line direction of FIG. 2, and shows the decomposition | disassembly state which made upper 1st plate 20A and lower 2nd plate 20B face each other. .
As shown in FIGS. 2 and 4 (a), the upper first plate 20A has a plurality of horizontal lower plate surfaces 20a (one surface 20a facing the second plate 20B). Fluid passages 40 and a plurality of heat storage material filling spaces 30 formed on the horizontal upper plate surface 20b (the other surface 20b). The first plate 20A is a press-formed product of a metal plate material such as an aluminum alloy.

  More specifically, the first plate 20A is a convex line having a fluid passage 40 that is recessed upward from the lower plate surface 20a and a convex portion 51 (bottom 51) that is flush with the lower plate surface 20a. 50 are alternately arranged in a horizontal row along the plate surface 20a. The fluid passage 40 and the ridge 50 have a substantially quadrilateral cross section. Further, the bottom 41 of the fluid passage 40 and the convex surface portion 51 of the ridge 50 are flat portions parallel to the plate surface 20a.

  As described above, since the first plate 20A is a press-formed product of a plate material, the uneven shape is reversed when the ridge 50 is viewed from the upper plate surface 20b side. That is, the portion on the back side of the ridge 50 in the first plate 20A is recessed. The recessed portion (that is, the groove) on the back side becomes the heat storage material filling space 30. In this way, the fluid passages 40 and the heat storage material filling spaces 30 are formed in the first plate 20A.

Among a plurality of plates 20 ..., a pair of plates 20A, 20B adjacent to each other overlap with each other such that surfaces 20a, 20a having fluid passages 40 ... face each other.
By alternately superposing the plurality of first plates 20A, 20A and the plurality of second plates 20B, 20B, the plurality of fluid passages 40... And the plurality of ridges 50. FIG. 4B shows a configuration in which the convex portions 51 and 51 are overlapped with each other.
In this state, the heat storage module 11 can be configured by joining the convex portions 51, 51 of the ridges 50, 50 together to join the plates 20, 20 together. In addition, there exist welding, brazing, adhesion | attachment etc. as joining.

  With such a configuration, the heat storage material filling space 30 in the first plate 20A becomes a space partitioned by the plate surface 20a of the second plate 20B. The heat storage material filling space 30 in the second plate 20B is a space partitioned by the plate surface 20a of the first plate 20A. These heat storage material filling spaces 30 are filled with the heat storage material Sh.

  On the other hand, the fluid passage 40 in the first plate 20A is a space partitioned by the plate surface 20a of the second plate 20B. The fluid passage 40 in the second plate 20B is a space partitioned by the plate surface 20a of the first plate 20A. These fluid passages 40... Pass the fluid Fu.

The heat storage material Sh is a material (latent heat storage material) that undergoes a phase change from a liquid to a solid, specifically a paraffin type, a sugar alcohol type such as erythritol, xylitol, sorbitol, or magnesium nitrate hexahydrate. It consists of salt hydrates.
The fluid Fu is a liquid that can exchange heat with the heat storage material Sh, that is, a heat exchange fluid (refrigerant, heat medium), for example, cooling water for engine cooling. The fluid Fu includes cold water and hot water.

  The fluid passage 40 is adjacent to the heat storage material filling space 30 and is a narrower space than the heat storage material filling space 30. Since the heat storage material filling space 30 and the fluid passage 40 are separated from each other by the wall 20c, they are not in communication with each other. The wall 20 c also serves as a heat transfer plate for exchanging heat between the heat storage material filling space 30 and the fluid passage 40. The thickness of the wall 20c is very thin because it corresponds to the thickness of one of the first and second plates 20A and 20B. Furthermore, since the wall 20c is only one plate, it has a uniform thickness. As a result, the heat energy can be uniformly exchanged between the heat storage material Sh filled in the heat storage material filling space 30 and the fluid Fu flowing through the fluid passage 40, so that the heat exchange efficiency can be further improved. Can do.

  FIGS. 5A and 5B are configuration diagrams of a portion where a pair of upper and lower fluid passages according to the present invention intersect. (A) shows the structure which communicated in the position where the upper and lower fluid passages 40 and 40 mutually cross | intersect. (B) shows the bb line cross-section structure of (a).

  As shown in FIGS. 2 and 5, the fluid passage 40 formed in the first plate 20 </ b> A is a long and narrow groove that opens downward. Further, the fluid passage 40 formed in the second plate 20B is a long and narrow groove opened upward. For this reason, a pair of upper and lower fluid passages 40, 40 communicate with each other at positions intersecting each other. That is, a communication portion 44 that communicates with each other is provided between the pair of upper and lower fluid passages 40, 40.

  As shown in FIGS. 2 and 5, when the pair of plates 20A and 20B is viewed from the surface direction (arrow Lo side in FIG. 5), the second plate with respect to the fluid passage 40 in the first plate 20A. The fluid passages 40 in 20B are generally orthogonal, and these fluid passages 40, 40 that are orthogonal to each other communicate with each other at orthogonal positions.

  As described above, the plurality of fluid passages 40 are arranged at a constant pitch. Therefore, as shown in FIGS. 2 and 3, the positions where the plurality of fluid passages 40... Communicate with each other orthogonally between the pair of plates 20A and 20B are a plurality of positions arranged at a constant pitch.

Next, other members in the heat storage device 10 will be described.
As shown in FIG. 1, the bottom plate 12 is a flat plate in which the outer contour of the heat storage module 11 is matched. The cover plate 13 is a flat plate having a contour of the outer periphery of the heat storage module 11, and has two filling holes 13a and 13a. These filling holes 13a and 13a are through holes penetrating in accordance with the positions of the heat storage material passage holes 32 in the heat storage module 11, and also serve as air vent holes. After filling the heat storage material Sh (see FIG. 4B) from one filling hole 13a to all the heat storage material filling spaces 30 ..., the filling holes 13a, 13a are closed with plugs 14,14. .

  The bottom plate 12 and the cover plate 13 are made of a metal product such as an aluminum alloy, a resin molded product, or the like. The mating surfaces of the heat storage module 11, the bottom plate 12, and the cover plate 13 can be sealed together and assembled together by brazing, welding, bonding, or the like. Moreover, you may seal by enclosure of packing.

  6 is a plan view of the heat storage device according to the present invention, FIG. 7 is a sectional view taken along line 7-7 in FIG. 6, FIG. 8 is a sectional view taken along line 8-8 in FIG. FIG. FIG. 10 is a cross-sectional view of a main part of the heat storage device according to the present invention, and is shown corresponding to FIG.

  As shown in FIGS. 1 and 6, the heat storage device 10 includes a fluid introduction header 60 that faces the entire first side 21 and second side 22 of the plurality of plates 20, and the third side 23 and fourth side. 24 is provided with a fluid outlet header 70 facing the entirety of 24 and four blocking plates 80... Each covering four sides of the plurality of plates 20.

As shown in FIG. 1 and FIGS. 6 to 9, the fluid introduction header 60 communicates with each end 42... Of each fluid passage 40. As shown, it has a substantially L shape in a plan view and has an inlet 61 at its corner.
This fluid introduction header 60 is a substantially U-shaped cross-sectional body with the plates 20... Open, and covers the entire first side 21 and second side 22 of the plurality of plates 20. Thus, the fluid Fu can be introduced into each end 42 of each of the fluid passages 40.

The fluid outlet header 70 has a substantially L shape in plan view so as to communicate with the other ends 43 of the fluid passages 40 orthogonal to each other, and has a outlet 71 at its corner.
This fluid lead-out header 70 is a substantially U-shaped cross-section with the plates 20... Open, and covers the entire third side 23 and fourth side 24 of the plurality of plates 20. Thus, the fluid Fu can be derived from the other ends 43 of all the fluid passages 40.

  For example, as shown in FIG. 6, the inlet 61 can be connected to the outlet of the water cooling jacket in the engine 91 with a hose 92, and the outlet 71 can be connected to the inlet of the water cooling jacket with a hose 93.

  As shown in FIG. 1 and FIGS. 6 to 10, the four blocking plates 80... Are connected to the ends 33 (see FIG. 8) of the heat storage material filling spaces 30. Are the members that are shielded from the ends 42... 43 (see FIGS. 7 and 9 in particular) and the headers 60 and 70. The shield plates 80 are provided between the fluid introduction header 60 and the plurality of plates 20 and between the fluid outlet header 70 and the plurality of plates 20. Each of the blocking plates 80 is a flat plate having a large number of through holes 81 penetrating in correspondence with the ends 42 of the plurality of fluid passages 40. It consists of a plate.

  As described above, it is simple that the blocking plates 80 are provided between the fluid introduction header 60 and the plurality of plates 20 and between the fluid outlet header 70 and the plurality of plates 20. The end 33... Of the heat storage material filling space 30... And the end 42... 43 of the fluid passage 40 adjacent to the heat storage material filling space 30. The gap can be easily blocked. Furthermore, between the end 33 ... of the heat storage material filling space 30 ... and the headers 60, 70 can be easily blocked. Therefore, the heat storage material Sh filled in the heat storage material filling spaces 30 and the fluid Fu passing through the headers 60 and 70 and the fluid passages 40 can be completely and easily blocked.

Next, the operation of the heat storage device 10 configured as described above will be described.
As shown in FIGS. 6, 7, and 9, the high-temperature fluid Fu that has cooled the engine 91 enters the inlet 61 through the hose 92 from the water-cooling jacket, and the fluid introduction header 60 and the two blocking plates 80, 80 and flows to the heat storage module 11.
Furthermore, in the heat storage module 11, the fluid Fu enters each end 42... (See FIGS. 7 and 9) of the fluid passages 40 orthogonal to each other, and the fluid passage 40. It passes along the groove and flows to each other end 43 (see FIGS. 7 and 9).
Further, the fluid Fu returns from the other end 43 to the water cooling jacket of the engine 91 through the two blocking plates 80 and 80 and the fluid outlet header 70 and from the outlet 71 through the hose 93.

  In this manner, in the heat storage module 11, heat exchange is performed between the heat storage materials Sh filled in the plurality of heat storage material filling spaces 30 and the fluid Fu flowing through the plurality of fluid passages 40. be able to.

By the way, as shown in FIG. 5, the fluid Fu flows through both the fluid passage 40 formed in the first plate 20A and the fluid passage 40 formed in the second plate 20B.
These fluids Fu and Fu are vigorously mixed through the communicating portion 44 at an orthogonal position. That is, vortex flows (turbulent flow) in a certain direction are generated in the fluids Fu and Fu by the flows of the fluids Fu and Fu intersecting each other.

Here, the configuration and operation of the heat storage device 10 will be described together.
As shown in FIGS. 1, 4, and 5, the heat storage device 10 includes a heat storage material filling space 30 that is filled with the heat storage material Sh and a fluid passage that passes the fluid Fu adjacent to the heat storage material filling space 30. In the one having the heat storage module 11 provided with, and exchanging heat energy between the heat storage material Sh and the fluid Fu,
The heat storage module 11 is composed of a plurality of stacked flat plates 20.
Each of the plurality of plates 20 ... has a groove-like fluid passage 40 ... formed on one surface 20a, and a groove-like heat storage material filling space 30 ... formed on the other surface 20b. With
Among a plurality of plates 20 ..., a pair of plates 20A, 20B adjacent to each other are overlapped so that the surfaces 20a, 20a having fluid passages 40 ... face each other,
When these pair of plates 20A and 20B are viewed from the surface direction, the fluid passages 40 of the other plate 20B are substantially orthogonal to the fluid passages 40 of the one plate 20A,
These fluid passages 40... Orthogonal to each other communicate with each other at orthogonal positions.

  That is, as shown in FIGS. 4 and 5, the heat storage module 11 includes groove-like fluid passages 40... On each side of the stacked plates 20. .. When a pair of adjacent plates 20A and 20B are overlapped with each other so that the surfaces having each other face each other, and the pair of plates 20A and 20B are viewed from the surface direction, The fluid passages of the other plate 20B are substantially orthogonal to the fluid passages 40, and the fluid passages 40 orthogonal to each other are communicated at positions orthogonal to each other. is there.

  By doing in this way, as shown in FIG. 5, the fluid Fu and Fu which are flowing through the fluid passages 40 and 40 orthogonal to each other can be vigorously mixed in the orthogonal position. That is, by the flows of the fluids Fu and Fu orthogonal to each other, a vortex that vortexes in a substantially constant direction (vortex flows in opposite directions) can be generated in the fluid Fu.

  Since the fluid Fu, Fu becomes a vortex, the heat transfer efficiency between the heat storage material Sh (see FIG. 4) and the fluid Fu is increased, so that the heat transfer area can be reduced accordingly. Since the heat transfer area is reduced, the heat storage device 10 can be reduced in size and weight.

  In addition, the fluids Fu and Fu flowing through the fluid passages 40 and 40 that are orthogonal to each other are vigorously mixed at an orthogonal position to generate a vortex that vortexes in a certain direction (a vortex in opposite directions). Therefore, the pressure loss of the fluid Fu can be suppressed. Therefore, it is possible to provide the high-performance heat storage device 10 that increases the heat transfer efficiency and suppresses the pressure loss of the fluid Fu.

Furthermore, the fluid Fu can be easily swirled by a simple configuration in which the fluid passages 40, 40 orthogonal to each other are communicated at positions orthogonal to each other. The heat storage device 10 with good heat transfer efficiency can be produced at low cost.
In this way, the heat exchange efficiency between the heat storage material Sh and the fluid Fu can be further increased while reducing the cost of the heat storage device 10.

  As shown in FIGS. 2 and 3, the heat storage module 11 makes the plurality of fluid passages 40... Orthogonal to and communicate with each other at a constant pitch, so that the fluid Fu flowing through the fluid passages 40. Thus, a vortex can be generated at a constant pitch. Since the generation | occurrence | production location of an eddy current increases, the heat transfer efficiency between the thermal storage material Sh (refer FIG.4 (b)) and the fluid Fu can be improved more.

  Furthermore, as shown in FIGS. 1, 6, 7 and 9, the heat storage module 11 has a plurality of plates 20..., That is, two sides sandwiching one corner 25 of the quadrilateral (first side 21 and Since the fluid introduction header 60 faces the second side 22), the fluid introduction header 60 is formed at each end 42 of the fluid passages 40 formed on the plurality of plates 20 and orthogonal to each other. Can be communicated. Therefore, the fluid can be distributed from one fluid introduction header 60 to each end 42 of the fluid passages 40 orthogonal to each other.

  In addition, since the fluid derivation header 70 faces the other two sides (the third side 23 and the fourth side 24) different from the two sides 21 and 22, each of the fluid passages 40. The fluid outlet header 70 can be communicated with the other ends 43. Therefore, the fluid Fu can be collected and led out from the other ends 43 of the fluid passages 40.

  In this way, only one member 60, 70 for introducing or deriving the fluid Fu is required for each of the plurality of fluid passages 40. For this reason, it can be set as the simple thermal storage apparatus 10 with few parts.

In the embodiment of the present invention, the direction in which the heat storage device 10 is arranged is arbitrary. It is free to move up, down, left and right according to the use of the heat storage device 10 and the layout with other devices.
Further, the heat storage module 11 may be a resin molded product, and the number of the heat storage modules 11 may be plural.
Moreover, about joining of 1st, 2nd plate 20A, 20B, joining of the baseplate 12 and the cover board 13 with respect to the thermal storage module 11, it shall be brazed by comprising each plate with a brazing sheet. Also good. A brazing sheet is a plate made by clad brazing by rolling or the like on one side or both sides of a base material.

  Since the heat storage device 10 of the present invention is a device that exchanges heat energy between the heat storage material Sh and the heat exchange fluid Fu, the heat storage device 10 collects the waste heat of the engine 91 and uses the recovered waste heat. It is suitable for a device used for warming up when starting the engine 91.

It is an exploded view of the heat storage apparatus which concerns on this invention. It is the perspective view represented in the state which decomposed | disassembled a pair of plate in the thermal storage module which concerns on this invention. FIG. 3 is a plan view of a plurality of plates in the heat storage module according to the present invention. It is a section lineblock diagram of a plurality of plates concerning the present invention. It is a block diagram of the part which a pair of upper and lower fluid passages which concern on this invention cross | intersect. It is a top view of the heat storage apparatus which concerns on this invention. FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. 6. FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. 6. FIG. 9 is a cross-sectional view taken along line 9-9 in FIG. 6. It is principal part sectional drawing of the thermal storage apparatus which concerns on this invention. It is a schematic diagram of the 1st conventional heat storage device. It is a schematic diagram of the 2nd conventional heat storage device. It is a schematic diagram of the conventional heat exchanger.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Thermal storage apparatus, 11 ... Thermal storage module, 20 ... Flat plate, 20A ... One plate (1st plate), 20B ... The other plate (2nd plate), 20a ... Surface which has a fluid passage, 30 ... heat storage material filling space, 33 ... end of heat storage material filling space, 40 ... fluid passage, 42 ... one end of fluid passage, 43 ... other end of fluid passage, 44 ... communication portion, 60 ... fluid introduction header, 70 ... fluid derivation Header, 80 ... shielding plate, Fu ... fluid, Sh ... heat storage material.

Claims (6)

In a heat storage device that includes a heat storage module that includes a heat storage material filling space that fills the heat storage material and a fluid passage that allows fluid to pass adjacent to the heat storage material filling space, and exchanges thermal energy between the heat storage material and the fluid,
The heat storage module comprises a plurality of laminated flat plates,
Each of the plurality of plates includes the groove-shaped fluid passage formed on one surface, and the groove-shaped heat storage material filling space formed on the other surface,
Of the plurality of plates, a pair of adjacent plates are overlapped so that the surfaces having the fluid passages face each other,
When these pair of plates are viewed from the surface direction, the fluid passage of the other plate is substantially orthogonal to the fluid passage of one plate,
A heat storage device characterized in that these mutually orthogonal fluid passages communicate with each other at orthogonal positions.   The plurality of plates are quadrilateral plates in which a plurality of fluid passages are formed, and the plurality of fluid passages are substantially linear passages extending between two opposite sides of the four sides of the quadrilateral. The heat storage device according to claim 1, wherein:   The heat storage device includes a fluid introduction header that faces two sides sandwiching one corner of the quadrilateral and a fluid lead-out header that faces other two sides different from the two sides, thereby providing a fluid introduction header, The fluid discharge header is configured to communicate with each other end of each of the fluid passages that are formed on the plurality of plates and that are orthogonal to each other, and to communicate with each other end of each of the fluid passages that are orthogonal to each other. The heat storage device according to claim 2.   Between the fluid introduction header and the plurality of plates, and between the fluid outlet header and the plurality of plates, the end of the heat storage material filling space and the end of the plurality of fluid passages are blocked. The heat storage device according to claim 3, further comprising a shielding plate.   The heat storage device according to claim 2, wherein the positions at which the plurality of fluid passages are orthogonal and communicate with each other are a plurality of positions arranged at a constant pitch. The said other plate is a member which becomes the same shape as said one plate when the front and back are reversed and the phase of the other plate is changed by 90 °. The heat storage device according to any one of 5.

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