JP2008261583A - Heat reservoir - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat reservoir of high efficiency and high capacity by improving heat conductivity. <P>SOLUTION: This heat reservoir comprises a heat reserving agent 1, a belt-like heat transfer body 2 having the multiple bent shape, a frame body 4 covering the circumference of a side portion of the heat transfer body 2, and an angular shaped-casing 3 receiving the heat reserving agent 1, the heat transfer body 2 and the frame body 4. As the shape of the heat transfer body 2 can be stably kept by the frame body 4, and the heat is transferred to the entire heat reserving agent 1 through the heat transfer body 2 from a top portion of the multiple bent shape, the heat can be efficiently taken in and out from the heat reserving agent 1. Further as the casing 3 is provided with the angular shape, the heat reserving body 5 can be used in a stacked state, thus a bulk ratio of the heat reserving body 5 in mounting can be improved, and the heat reserving body 5 of high efficiency and high capacity can be provided. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a heat storage body used for hot water supply, air conditioning, drying, and the like.

  Conventionally, this type of heat storage body is configured by storing a heat storage agent and a heat transfer promoting material made of an amorphous wire mesh in a casing of a spherical capsule. The heat storage body is used by filling the heat storage tank, and heat is stored in the heat storage body by circulating the high-temperature water heated by the heat source to the heat storage tank. After exchanging heat with the heat storage body, it was taken out from the heat storage tank as hot water and used for hot water supply or the like (for example, see Patent Document 1).

FIG. 10 shows a cross-sectional view and a utilization form of a conventional heat storage body described in Patent Document 1, and the heat storage body 5 includes a heat storage agent 1, a heat transfer body 2, a heat storage agent 1, and a heat transfer body. And a casing 3 of a spherical capsule that accommodates 2.
JP-A-6-281371

  However, in the configuration of the conventional heat storage body described in Patent Document 1, the heat storage agent 1 is heated from the outside of the spherical capsule casing 3 to heat the internal heat storage agent 1 to store heat. Therefore, the heat transfer body 2 is used to improve the apparent thermal conductivity.

  However, since an amorphous wire net is used for the heat transfer body 2 and a spherical capsule or the like is used for the casing 3, heat is not sufficiently transferred to the heat storage agent 1 at the center of the spherical capsule, so that the efficiency is low and further spherical. Due to geometric limitations, the volume ratio of the heat storage body 5 filled in the heat storage tank 14 is as low as about 50%, and thus has a problem that the heat storage capacity is small.

  The present invention solves the above-described conventional problems, and an object thereof is to provide a highly efficient and large capacity heat storage body.

  In order to solve the conventional problem, a heat storage body of the present invention includes a heat storage agent, a belt-shaped heat transfer body having a ninety-nine fold shape, a frame body that covers the periphery of the side of the heat transfer body, and A heat storage agent, a square casing that houses the heat transfer body, and the frame body, the shape of the heat transfer body being stably maintained by the frame body, and the heat transfer body from the top of the ninety-nine fold shape Since heat is transferred to the entire heat storage agent through the heat storage agent, heat can be efficiently transferred into and out of the heat storage agent, and the casing can be used in a square shape so that heat storage bodies can be stacked and used. The volume ratio of the body is also improved, and a highly efficient and large capacity heat storage body can be realized.

  The heat storage body of the present invention can efficiently transfer heat to the heat storage agent inside the casing, can increase the volume ratio of the heat storage body at the time of mounting, and can realize a highly efficient and large capacity heat storage body.

The first invention includes a heat storage agent, a belt-shaped heat transfer body having a ninety-nine fold shape, a frame body that covers the periphery of the side of the heat transfer body, the heat storage agent, the heat transfer body, and the frame body. With a rectangular casing that houses the heat, and the heat transfer body is kept stable with the frame body, and heat is transferred from the top of the ninety-nine fold shape to the entire heat storage agent through the heat transfer body. Heat can be taken in and out from the heat storage agent, and the casing can be used in a square shape, so that the heat storage body can be stacked and used, and the volume ratio of the heat storage body during mounting is improved. An efficient and large-capacity heat storage body can be realized.

  In the second invention, in particular, a hole is arranged on at least one side of the frame body of the first invention. A liquid heat storage agent is poured from the hole of the frame body to form a belt-like transmission having a ninety-nine fold shape. A predetermined amount of heat storage agent can be filled around the heat body, and a heat storage body having high efficiency and uniform performance can be realized.

  In the third invention, in particular, the width of the frame of the first or second invention is made smaller than the bending height of the heat transfer body, and the heat transfer surface of the heat storage body is pressurized to press the heat transfer body of the frame body. It can be compressed to the width, ensuring a uniform amount of compression and improving adhesion, and stably reducing the contact resistance of the heat transfer body on the heat transfer surface, and the thermal conductivity of the entire heat storage body Can be improved.

  In the fourth aspect of the invention, in particular, the heat transfer body according to any one of the first to third aspects is formed of a wire mesh, and one of the wires constituting the wire mesh is oriented in a substantially vertical direction with respect to the heat transfer surface of the casing. Therefore, the heat passing distance from the heat transfer surface to the heat transfer body is shortened, and the thermal conductivity of the heat storage body can be improved without greatly reducing the filling amount of the heat storage agent.

  In the fifth aspect of the invention, in particular, the cross section of the frame of any one of the first to fourth aspects is substantially U-shaped, and the end portion of the heat transfer body is the substantially U-shaped cross section of the frame. By sandwiching, the projecting wire rod of the wire mesh cutting part constituting the end of the heat transfer body is covered with the frame, and the protrusion of the heat transfer body can be prevented from damaging the casing.

  In the sixth invention, in particular, the height of the end bent portion of the heat transfer body according to any one of the first to fifth inventions is made smaller than the width of the frame body. It is housed inside the body, and the protrusion of the heat transfer body can be prevented from damaging the casing.

  In the seventh invention, in particular, a groove is provided in the longitudinal direction of at least one side of the frame body of any one of the first to sixth inventions, and the shape of the heat transfer body is prevented by preventing deformation of the frame body. As a result, the heat conductivity of the heat transfer body can be kept stable and high.

  In the eighth invention, in particular, the casing according to any one of the first to seventh inventions is formed of a bag-like film that is fused and sealed on three sides, and a bag is formed with a single film and there is no seal portion. The casing is configured with the bent portion as the bottom, and leakage of the heat storage agent from the bottom of the heat storage body can be prevented to realize a highly reliable heat storage body.

  In the ninth invention, in particular, the heat transfer body of any one of the first to eighth inventions is formed of a surface-treated copper wire mesh, which prevents the heat transfer body from being corroded by the heat storage agent. A heat storage body having high conductivity and excellent durability can be realized.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by this embodiment.

(Embodiment 1)
FIG. 1 is a plan view and a cross-sectional view of a heat storage body in the first embodiment of the present invention.

In FIG. 1, the heat storage body 5 in the present embodiment is formed by folding ninety nine strips of a material having high thermal conductivity such as copper and covering the periphery of the side portion with a flat frame body 4. It is composed of a heat element 2, a rectangular, casing 3 made of a metal material and containing the heat transfer element 2, and a heat storage agent 1 made of sodium acetate trihydrate and filled in the casing 3.

  About the heat storage body 5 in this Embodiment comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, when the heat transfer surface on the surface of the casing 3 is heated, the heat storage agent 1 in the vicinity of the heat transfer surface rises in temperature, reaches the melting temperature, and becomes liquid. At this time, since the internal heat storage agent 1 at a distance away from the heat transfer surface is also heated by the heat transfer body 2 whose shape is maintained by the frame body 4 and becomes liquid, heat is transferred to the entire heat storage body 5, The heat storage agent 1 is melted and stored as latent heat.

  On the other hand, by cooling the heat transfer surface of the heat storage body 5 that has stored heat, the heat storage agent 1 of the heat storage body 5 is solidified and radiated as latent heat by a phenomenon opposite to that in the case of heat storage.

  As described above, according to the present embodiment, the heat storage body 5 includes the heat storage agent 1, the belt-shaped heat transfer body 2 having a ninety-nine fold shape, and the frame that covers the periphery of the side of the heat transfer body 2. 4 is housed in the rectangular casing 3 so that the shape of the heat transfer body 2 is kept stable, and the heat storage agent 1 located inside the heat storage body 5 is efficiently heated from the heat transfer surface of the casing 3. The heat conductivity of the entire heat storage body 5 is improved, the heat storage agent 1 can be melted or solidified to use a large amount of heat as latent heat, and the casing 3 has a square shape, By using the flat heat transfer flow path 6 and the heat transfer surface of the heat storage body 5 in contact with each other and stacking a plurality of sheets, the volume ratio of the heat storage body 5 occupying the apparatus can be improved, and the heat storage capacity can be increased with high efficiency. A large heat storage body 5 can be realized.

(Embodiment 2)
FIG. 2 is a cross-sectional view and a perspective view of a heat storage body according to the second embodiment of the present invention.

  As shown in FIG. 2, the heat storage body 15 in the present embodiment is provided with a plurality of holes 16 in the upper side 4 a of the frame body 4, and other configurations are the same as those in the first embodiment. Since it is the same as a heat storage body, the same part is attached with the same symbol and its description is omitted.

  The operation | movement and effect | action of the thermal storage body 15 in this Embodiment comprised as mentioned above are demonstrated below.

  First, in a state where the periphery of the heat transfer body 2 is covered with a casing 3 or the like having an open top, a suitable amount of the liquid heat storage agent 1 is poured from the hole 16 provided in the upper side 4a of the frame body 4 to cool and solidify. Then, the upper part of the casing 3 is degassed and sealed, so that the heat storage agent 1 is filled in an appropriate amount around the heat transfer body 2 and molded.

  As described above, according to the present embodiment, by providing the hole 16 in the upper side 4 a of the frame body 4, the side of the upper part of the frame body 4 can be maintained in a state where the shape of the heat transfer body 2 is kept stable. An appropriate amount of the liquid heat storage agent 1 is filled from the hole 16 provided in 4a and solidified and molded, and an appropriate amount of the heat storage agent 1 is solidified and molded around the heat transfer body 2 to stabilize the highly efficient heat storage body 15. Can be produced.

(Embodiment 3)
FIG. 3 is a cross-sectional view of a heat storage body according to the third embodiment of the present invention. As shown in FIG. 3A, the heat storage body 20 in the present embodiment is configured such that the width a of the frame body 4 is smaller than the bending height b of the heat transfer body 2 and has a ninety-nine fold shape. The bent portion of the belt-like heat transfer body 2 is positioned outside the frame body 2 that covers the periphery, and the other configuration is the same as that of the heat storage body in the first embodiment. Reference numerals are assigned and explanations thereof are omitted.

  About the heat storage body 20 comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, when pressurizing the heat transfer surface of the heat storage body 20 to compress the heat transfer body 2 and improve the adhesion, the periphery of the heat transfer body 2 is covered with a frame 4 having a width a smaller than the bending height b, When the heat transfer flow path 6 in contact with the heat transfer surfaces on both sides of the body 20 is pressurized with a certain force, the bending height b of the heat transfer body 2 decreases and eventually hits the frame body 4 to the same height as the width a. The compression length can be kept constant. Furthermore, even if the amount of compression becomes excessive, the heat transfer body 2 is not compressed and damaged.

  As described above, according to the present embodiment, by configuring the width a of the frame body 4 to be smaller than the bending height b of the heat transfer body 2, the degree of compression of the heat transfer body 2 is kept uniform, The adhesion of the heat transfer body 2 on the heat transfer surface can be improved in a uniform state, and the heat conduction performance of the heat storage body 20 can be improved.

(Embodiment 4)
FIG. 4 is a cross-sectional view of a heat storage body in the fourth embodiment of the present invention.

  As shown in FIG. 4, the heat storage body 25 in the present embodiment is formed by forming a heat transfer body 26 that transmits heat to the heat storage material 1 by folding a belt-shaped wire mesh and surrounding the frame body 4. In addition to providing the wire rod 27 that constitutes the wire mesh in a direction substantially perpendicular to the heat transfer surface of the casing 3, the other configurations are the same as the heat storage body in the first embodiment, and therefore the same. Parts are denoted by the same reference numerals, and description thereof is omitted.

  About the heat storage body 25 comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, when the heat transfer surface of the heat storage body 25 is heated, heat is transferred to the heat storage agent 1 inside the heat storage body 25 through the wire 27 constituting the wire mesh of the heat transfer body 26, but one wire 27 is transferred to the heat transfer surface. Since they are arranged in a substantially vertical direction, heat is transferred at the shortest distance and efficiently transferred to the entire heat storage body 25.

  As described above, according to the present embodiment, by arranging the wire 27 in a direction substantially perpendicular to the heat transfer surface of the casing 3, heat is efficiently transferred from the heat transfer surface to the internal heat storage agent 1. The heat transfer performance of the heat storage body 25 can be significantly improved.

(Embodiment 5)
FIG. 5 is a perspective view and a cross-sectional view of a heat storage body according to the fifth embodiment of the present invention.

  The heat storage body 30 in this Embodiment comprises the heat exchanger 2 using a strip | belt-shaped metal mesh, forms the cross section of the frame 4 in substantially U shape, as shown in FIG. A wire rod projection at the cut end of the belt-like wire mesh is sandwiched between the U-shaped cross sections of the frame body 4, and the other parts are the same as the heat storage body in the first embodiment. Are denoted by the same reference numerals and description thereof is omitted.

  About the heat storage body 30 in this Embodiment comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, when a belt-like wire mesh is used for the heat transfer body 2, the end portion of the wire body is cut and exists as a projection, but the cross section of the frame body 4 has a U-shape as in the present embodiment. It is possible to prevent the protrusion from damaging the casing 3 by covering the wire protrusion at the cut end of the belt-like wire mesh of the heat transfer body 2 with the frame body 4 having a substantially U-shaped cross section. .

(Embodiment 6)
FIG. 6 is a cross-sectional view of a heat storage body according to the sixth embodiment of the present invention.

  The heat storage body 35 in this Embodiment comprises the heat exchanger 2 using a strip | belt-shaped metal mesh, and the height of the edge bending part 36 of the heat exchanger 2 is made into the width | variety of the frame 4 as shown in FIG. It is formed to be smaller so that the end bent portion 36 of the heat transfer body 2 does not protrude outside the width of the frame body 4. The other structure is the same as that of the heat storage body in the first embodiment. Since they are the same, the same parts are denoted by the same reference numerals and description thereof is omitted.

  About the heat storage body 35 comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, when a belt-like wire mesh is used for the heat transfer body 2, a wire cut portion is formed at the beginning and end of bending, and the end of the end bent portion 36 is in a state where the wire is cut. In the embodiment, since the height of the bent portion 36 is smaller than the width of the frame body 4, the cut portion does not come into contact with the casing 3.

  As described above, according to the present embodiment, the end of the heat transfer body 2 is formed into a frame body by forming the bending height of the end bent portion 36 of the heat transfer body 2 to be smaller than the width of the frame body 4. It is possible to prevent the end portion of the heat transfer body 2 from damaging the casing 3 and leaking the internal heat storage agent 1 to the outside without protruding beyond the width of 4.

(Embodiment 7)
FIG. 7 is a perspective view and a cross-sectional view of a heat storage body according to the seventh embodiment of the present invention.

  As shown in FIG. 7, the heat storage body 40 in the present embodiment is provided with grooves 41 in the longitudinal direction of each side of the plate-like frame body 4, and other configurations are the same as those in the first embodiment. The same parts are denoted by the same reference numerals, and the description thereof is omitted.

  About the heat storage body 40 comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, the frame 4 covers the periphery of the side portion of the belt-shaped heat transfer body 2 having a 99-fold shape and maintains the shape of the heat transfer body 2, but the frame 4 is melted and solidified with the heat storage agent 1. However, since the groove 41 provided in the frame body 4 acts as a strength member, the frame body 4 is not greatly deformed.

  As described above, according to the present embodiment, by providing the groove 41 in the plate-like frame body 4, the groove 41 prevents deformation of the frame body 4 even when a large force acts on the frame body 4. Therefore, the frame body 4 prevents the heat transfer body 2 from being deformed, so that the heat storage body 40 can maintain high heat transfer performance.

(Embodiment 8)
FIG. 8 is a plan view and a cross-sectional view of a heat storage body in the eighth embodiment of the present invention.

  As shown in FIG. 8, the heat storage body 45 in the present embodiment folds the casing 3 made of a single film, houses the heat storage material 1, the heat transfer body 2, and the frame body 4 therein, and then The three parts are configured by fusion sealing, and the other parts are the same as those of the heat storage body in the first embodiment. Therefore, the same parts are denoted by the same reference numerals and the description thereof is omitted.

  About the heat storage body 45 comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, the casing 3 made of a single film is folded, the left and right sides are fused and sealed to form a bag, the heat storage material 1, the heat transfer body 2, and the frame body 4 are housed therein, and then deaerated. The remaining one is fusion sealed.

  As described above, according to the present embodiment, the folding part 3a of the casing 3 is the bottom part of the casing 3, so that the heat storage agent 1 is prevented from leaking from the casing 3, and the heat storage body 45 having high reliability. Can be realized.

(Embodiment 9)
FIG. 9 is a cross-sectional view of the heat storage body and the wire thereof in the ninth embodiment of the present invention.

  As shown in FIG. 9, the heat storage body 50 in the present embodiment is formed by forming the heat transfer body 2 with a copper wire mesh and applying a surface treatment by providing a corrosion-resistant film 52 on the surface of the wire 51 forming the wire mesh. Therefore, since the other structure is the same as that of the heat storage body in the first embodiment, the same parts are denoted by the same reference numerals and the description thereof is omitted.

  About the heat storage body 50 in this Embodiment comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, as the material of the heat transfer body 2, a material such as copper having a large thermal conductivity is suitable. However, when sodium acetate trihydrate having a large specific heat is used as the heat storage agent 1, copper is corroded. In this embodiment, surface treatment such as tin plating is performed to form a tin film 52 to improve the corrosion resistance.

  As described above, according to the present embodiment, the copper heat transfer body 2 is tin-plated and surface-treated to form the tin film 52 on the copper surface, thereby maintaining high heat transfer performance. Thus, the corrosion resistance to the heat storage agent 1 can be improved.

  Further, as the surface treatment, the same effect can be obtained even if the copper oxide film 52 is formed on the surface of the copper material by alkali treatment or the like.

  As described above, the heat storage body according to the present invention enables high-efficiency and large-capacity heat storage, and therefore can be applied to uses such as hot water supply, cooling, heating, drying, and industrial waste heat recovery devices.

(A) The top view of the thermal storage body in Embodiment 1 of this invention, (b) Sectional drawing (AA cross section) of the thermal storage body, (c) Sectional drawing (BB cross section) of the thermal storage body (A) Sectional view of heat storage body in Embodiment 2 of the present invention, (b) Perspective view of the heat storage body (A) Cross-sectional view (before compression) of the heat storage body in Embodiment 3 of the present invention, (b) Cross-sectional view of the heat storage body (after compression) Sectional drawing of the thermal storage body in Embodiment 4 of this invention (A) The perspective view of the thermal storage body in Embodiment 5 of this invention, (b) Sectional drawing (CC cross section) of the thermal storage body Sectional drawing of the thermal storage body in Embodiment 6 of this invention (A) The perspective view of the thermal storage body in Embodiment 7 of this invention, (b) Sectional drawing (DD cross section) of the thermal storage body (A) The top view of the thermal storage body in Embodiment 8 of this invention, (b) Sectional drawing (EE cross section) of the thermal storage body (A) Cross-sectional view of the heat storage body in Embodiment 9 of the present invention, (b) Cross-sectional view of the wire of the heat storage body (A) Cross-sectional view of a conventional heat storage body, (b) A diagram showing a use form of the heat storage body

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heat storage agent 2, 26 Heat transfer body 3 Casing 4 Frame 4a Side 5, 15, 20, 25, 30, 35, 40, 45, 50 Heat storage body 6 Heat transfer flow path 16 Hole 27, 51 Wire material 36 End part bending part 41 Groove 52 Coating

Claims (9)

A heat storage agent, a belt-like heat transfer body having a 99-fold shape, a frame body that covers the periphery of the side of the heat transfer body, and a rectangular shape that houses the heat storage agent, the heat transfer body, and the frame body A heat storage body with a casing. The heat storage body according to claim 1, wherein a hole is provided on at least one side of the frame. The heat storage body according to claim 1 or 2, wherein the width of the frame is smaller than the bending height of the heat transfer body. The heat storage body according to any one of claims 1 to 3, wherein the heat transfer body is formed of a wire mesh, and one of the wires constituting the wire mesh is oriented in a direction substantially perpendicular to the heat transfer surface of the casing. The heat storage body according to any one of claims 1 to 4, wherein a cross-section of the frame is substantially U-shaped, and an end portion of the heat transfer body is sandwiched between substantially U-shaped cross-sections of the frame. The heat storage body according to any one of claims 1 to 5, wherein a height of the bent end portion of the heat transfer body is smaller than a width of the frame body. The heat storage body according to any one of claims 1 to 6, wherein a groove is provided in a longitudinal direction of at least one side of the frame body. The heat storage body according to any one of claims 1 to 7, wherein the casing is formed of a bag-like film that is fused and sealed on three sides. The heat storage body according to any one of claims 1 to 8, wherein the heat transfer body is formed of a surface-treated copper wire mesh.

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