JPH05296676A - Heat accumulator - Google Patents

Abstract

PURPOSE:To obtain a heat accumulator, easy in handling, by a method wherein an extendable soft tube is formed of rubber or synthetic resin material and the tube is filled with wax and the like while the opening of the end of the tube is sealed by a sealing means. CONSTITUTION:A heat accumulator accumulates the heat of cooling water for an engine and discharges the accumulated heat when a motor car is operated in winter and the cabin thereof is to be heated immediately whereby the heat can be used optimally when immediate heating is requested. The heat accumulator is formed of rubber or synthetic resin material, excellent in resistance to wax, while the soft tube 1 of the same is filled with wax 2, converted from solid phase into liquid phase while absorbing melting heat by the increase of the temperature thereof. After filling the wax 2, the opening of the end of the tube 1 is sealed by a sealing means (a) such as fusion welding, adhesive agent or a proper sealing metal whereby the heat accumulator A having a given unit size can be constituted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is for the purpose of immediately heating the interior of a cabin that has been allowed to cool when driving an automobile in the cold season, or for a state of being left for a long time in the cold season. When the hot water tap is opened, the hot water flowing out while being left to cool for a while is immediately warmed. The present invention relates to an improvement of a heat storage device used to store a part of the heat quantity of hot water in the inside.

[0002]

2. Description of the Related Art A heat storage device is usually placed in a container surrounded by heat insulating material, which is heated to a high temperature, like an electric heater that uses hot water at a low cost for electricity to store hot water. It is a form in which it is put in and kept warm as it is, and the amount of heat to be stored is the product of the temperature of the water of the heated specific heat 1 and the volume of the water, and is not so large. From this, as a means for increasing the amount of heat storage per volume, a substance that does not depend on the specific heat of the substance, such as waxes and barium hydroxide, that undergoes phase conversion by temperature change, is used.
A means was developed to store the amount of heat as the heat of fusion when the substance changes from the solid phase to the liquid phase, and to release the amount of heat corresponding to this heat when the substance changes to the solid phase due to a temperature drop. Has been done.

[0003]

If a substance that absorbs a large amount of heat as the heat of fusion is used for the phase conversion due to temperature change and the heat is stored as the heat of fusion, a large amount of heat is generated for the capacity. Although it becomes possible to store heat, this means requires that the substance to be used be obtained at a low cost and be easy to handle.

By the way, waxes or barium hydroxide are promising as a substance used for this means in terms of price, but the ratio of volume expansion when changing from a solid phase to a liquid phase is large, and a heat storage state. Since the liquid phase at that time becomes a solid phase at the time of heat dissipation, it is difficult to handle and there is a problem in terms of handling.

The waxes can be used as an advantageous form for heat exchange and the like by absorbing them in the particles of the self-swelling type highly oil-absorbent resin and dispersing them in hot water or water. Although it may be convenient, the particles of the self-swelling highly oil-absorbent resin are softened by the absorption of paraffins, and when pressure is applied, the absorbed paraffins come out on the surface of the highly oil-absorbent resin particles. As a result, there is a problem that the usage is hindered.

The present invention has been made in order to solve this problem that has occurred in the conventional means, and an inexpensive wax that converts from a solid phase to a liquid phase while absorbing the heat of fusion by a temperature rise, It is an object of the present invention to provide a new means for obtaining a heat storage device that can be easily handled while using it as a substance for storing heat quantity as heat of fusion.

[0007]

In the present invention, as a means for achieving the above-mentioned object, a flexible tube which can be freely expanded and contracted by a rubber or synthetic resin material having good wax resistance is used. The present invention proposes a heat storage means for molding, filling wax in the tube and sealing the tube, and storing heat in the enclosed wax by utilizing the heat of fusion absorbed during the phase conversion of the wax.

According to this means, the waxes enclosed in the tube are liquefied by the supply of heat to absorb a large amount of heat of fusion, and when the heat is stored, the wax increases due to thermal expansion. When the volume change of a class is absorbed by the expansion of a flexible tube, the amount of heat is released to lower the temperature, and the heat of solidification corresponding to the heat of fusion is released to change to the solid phase and shrink the volume. The negative pressure generated in the tube causes the tube to contract, and the volume change of the waxes is absorbed by the deformation of the tube.

From this fact, it becomes possible to store and radiate heat by utilizing the heat of fusion of waxes without worrying about the volume change at the time of phase change of waxes.
Further, since the desired amount of heat storage can be obtained by changing the number or length of the tubes 1 in which the waxes 2 are enclosed, it is possible to obtain a heat storage means that is very easy to handle.

[0010]

Embodiments Next, embodiments will be described in detail with reference to the drawings. FIG. 1 is a vertical sectional side view of a heat storage device A according to the present invention.
Reference numeral 1 indicates a tube that expands and contracts, and 2 indicates waxes filled inside the tube 1.

The tube 1 to be expanded and contracted is formed into a flexible tube shape by using rubber or synthetic resin material having good wax resistance. Silicone, NBR, FKM, PVC, nylon, Teflon, etc. are used as the synthetic resin material with good wax resistance.

The wax 2 filled in the tube 1 is
Wax which is liquefied by heating the other end of the tube 1 to a high temperature while degassing the air inside by connecting one end of the tube 1 to the outlet of a negative pressure generator such as a vacuum pump. The waxes 2 are sucked into the tube 1 by being pushed into the tube 2 to fill the inside of the tube 1, and in this state, the openings at both ends of the tube 1 are heat-welded or bonded. By sealing with the sealing means a by the agent,
It is enclosed in the tube 1 and constitutes a heat storage device A having a constant unit size.

As shown in FIG. 2, the sealing means a for the opening portions at both ends of the tube 1 which has been filled with the waxes 2 has a tubular shape made of a metal material on the outer periphery of the opening portions at both ends of the tube 1. The molded caulking metal fitting 30 is fitted and inserted, and a plug-like sealing metal fitting in which serrated or spiral protrusions are formed on the peripheral surface in the inner cavities of both ends of the tube 1 as shown in FIG. 31 or a sealing metal fitting 31 formed in a proper shape such as a rivet having a cone-shaped head at the tip as shown in FIG. In some cases, the end portion of the peripheral wall of the tube 1 made of a resin material is caulked between the caulking metal fitting 30 and the sealing metal fitting 31 for sealing, and an appropriate sealing means is used.

The wax 2 filled in the tube 1 is used in the heat storage device A in order to improve the efficiency of heat conduction when absorbing heat from the outside and radiating the heat to the outside. As shown in FIG. 5, a metal material 4 having good thermal conductivity is formed in a wire shape and charged in the inside of the container 1, and waxes 2 are formed around the metal material 4.
There is a case where the waxes 2 are filled with the metal material 4 by filling the inside of the tube 1 with the filling of the waxes, thereby improving the thermal conductivity of the waxes 2 themselves in the tube 1.

As described above, the metal material 4 having good thermal conductivity to be inserted into the tube 1 is not limited to the wire-shaped one. As shown in FIG. 6, the metal material 4 is formed in a shape in which the fins 41 ... Radially project from the axial rod-shaped core material 40, and the axial direction of the core material 40 is aligned with the axial direction of the tube 1. As the posture to follow, the tube 1 may be preliminarily loaded into the tube 1 in advance, and an appropriate form may be adopted. Further, as shown in FIG. 6, when the metal material 4 is formed in the form including the core material 40, both ends of the core material 40 are sealed at both ends of the tube 1 or the seal fitting 31 of the sealing means a. -It may be possible to hold it at 31.

Next, FIGS. 7 and 8 show another embodiment. In this embodiment, the tubes 1 which are filled with waxes 2 and constitute the heat storage device A are not a single tube but are arranged in multiple rows.

That is, when the tube 1 is formed of a rubber or synthetic resin material having good wax resistance into a flexible tubular shape, a continuous strip-shaped body b is formed from the material and the strip-shaped body is formed. By forming a large number of tubes 1 ... In such a manner as to cross the strip b in the width direction at a portion at a predetermined interval in the longitudinal direction of b, the large number of tubes 1 ... As a connecting member so that they are connected in parallel in multiple lines. And these tubes 1
After the waxes 2 are filled from the openings of the tube 1, the tubes 1 are sealed with an appropriate sealing means a such as heat welding as shown in FIG. Tube 1 containing waxes 2 constituting A
... are arranged in parallel in multiple lines.

Also in this embodiment, the waxes 2
Means for charging the metal material 4 having good thermal conductivity inside the tube 1 for enclosing is appropriately used.

Next, FIG. 9 shows still another embodiment. In this embodiment, a heat storage device A constituted by enclosing waxes 2 in a flexible tubular tube 1 made of rubber or a synthetic resin material has a flow path 53 in which a heat medium flows. This is an example in which it is used in combination with the can body 5 by being charged in the body 5.

That is, in the heat storage device A constructed by filling the tube 2 with the wax 2 and sealing the tube 1, the tube 1 is formed to be long in the axial direction. And the inlet pipe 5
0 and an outlet pipe 51 are separately formed, and inside of the can body 5, a partition plate 52 is arranged so that the heat medium flowing from the inlet pipe 50 meanders toward the outlet pipe 51. It is provided so as to form a passage 53, and the tube 1 constituting the heat storage device A formed long in the axial direction is bent into a serpentine shape in the meandering passage 53 inside the can body 5. In this example, the heat is transferred between the heat medium flowing through the can body 5 and the heat storage device A by charging the heat storage device A.

Next, FIG. 10 shows another embodiment. This embodiment is a modification in which the form of the can body 5 in the embodiment shown in FIG. 9 is changed. That is, the can body 5 in which the flow path 53 of the heat medium is formed has a double wall as its peripheral wall, and is formed in the shape of a thermos bottle for degassing the space between them into a vacuum. A flexible tube 1
The heat storage device A configured by being filled in the
Is formed in a long continuous shape in the longitudinal direction, and the tube 1 is inserted into the inside of the bottle-shaped can body 5 in a spiral serpentine shape.

A hollow lid 6 is fitted into the opening 5a of the bottle-shaped can body 5 while keeping it watertight and airtight, and the heating medium is allowed to flow into the can body 5 through the lid 6. An inflow conduit 60 and an outflow conduit 61 for outflowing the heat medium flowing into the can body 5 are provided so as to penetrate the lid 6 in and out, and the inflow conduit 60 is provided. The heat medium flowing from the inside of the can body 5 into contact with the heat storage device A charged in a spiral serpentine shape and flows out from the outflow conduit 61 to the outside, whereby the heat storage device A Heat is transferred between the heat medium and the heat medium.

In addition, in the above-mentioned inflow pipe line 60 and outflow pipe line 61, valve bodies 62 and 63 are formed of a heat insulating material or a material having poor heat conductivity, and closed by springs 64 and 65. The check valves V1 and V2 biased to the side are installed, and when the flow of the heat medium in the inflow conduit 60 and the outflow conduit 61 is stopped by this, the check valves V1 and V2
The valve bodies 62 and 63 of V2 are pushed to the closed position by the springs 64 and 65 to adiabatically cut off the pipeline 60 and the pipeline 61, whereby the heat quantity stored in the heat storage device A is transferred to the outside. It is designed so that it can be stored in a state with suppressed emission.

Next, FIG. 11 shows another embodiment. This embodiment is similar to the above-described embodiments in that the amount of heat stored in the waxes 2 filled and sealed in the tube 1 is released through the outer peripheral surface side of the tube 1. However, this is an example in which the heat quantity is supplied to the waxes 2 inside the tube 1.

That is, in this embodiment, a flexible tubular tube 1 is formed of rubber or a synthetic resin material, and waxes 2 are filled in the inside of the tube 1 to be sealed and stored in the waxes 2. Discharging the amount of heat from the outer peripheral surface side of the tube 1 is similar to that of each of the above-described embodiments, but the tube 1 filled with the wax 2 is formed into a rod shape. The electric heater H having the heating wire 71 stored in the sheath 70 is charged prior to the filling of the wax 2 and, when assembled in the heat storage device A, enclosed in the tube 1 thereof. The heat amount is supplied to the waxes 2 by the electric heater H inside the tube 1.

In this embodiment, the sealing means a for sealing the electrode terminal portions 72 of the electric heater H loaded in the tube 1 into the openings at both ends of the tube 1 after the wax 2 is filled. With respect to the seal fittings 31, 31, a through hole 32 opened at an axial center portion thereof is fitted and inserted through an O-ring 33, and the outer end side is projected to the outside so as to be held. By connecting 72 and 72 to a commercial power source through a connection cord and supplying electricity, the amount of heat to the wax 2 can be supplied.

Further, in this embodiment, the collar 8 which is fitted to the sheath portion 70 is provided on the outer circumference of the sheath portion 70 having a cylindrical tubular shape for accommodating the heating wire 71 of the electric heater H at an appropriate interval in the axial direction.
As shown in FIG. 0 to FIG. 12, a tooth ring-shaped tube protection member 8 having a large number of arms 81 protruding in the radial direction is molded and attached by a material having poor heat conductivity such as a synthetic resin material, The protective member 8 holds the inner peripheral surface of the tube 1 at a position separated from the electric heater H to prevent the tube 1 from being damaged by the heat of the electric heater H.

In this embodiment, for example, the boiled water can be stored by installing it in a hot water storage tank as a heat source of an electric water heater for boiling and storing hot water using low-priced late-night power. At the same time as storing, a large amount of heat is stored and the amount of heated hot water that can be used is increased. In addition, the electrode terminal parts 72, 72 of the electric heater H inserted in the tube 1 even when it is naked without being combined with the hot water storage tank
By connecting the to a commercial power source so that the midnight power can be used, the inexpensive heat amount stored by the midnight power can be used as a heater that can be taken out when the morning is cold.

[0029]

As described above, in the heat storage device according to the present invention, the flexible tube 1 which can be expanded and contracted is molded from the rubber or the synthetic resin material, and the waxes 2 are filled in the tube 1. The opening at the end of the tube 1 is sealed with a sealing means a.
Therefore, the heat storage and the heat radiation performed by using the heat of fusion of the waxes 2 make the waxes 2 sealed.
Since it can be performed without worrying about the volume change at the time of the phase change, and the heat storage amount can be set as desired by changing the number of tubes 1 or the length,
Supports various applications such as immediate heating of the cabin of an automobile, immediate heating of the hot water discharged from the hot water supply facility tap, and heat source installed in the hot water tank of an electric water heater that uses late-night power. A heat storage device that is easy to handle can be obtained.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of a heat storage device according to the present invention.

FIG. 2 is a vertical sectional side view of another embodiment of the heat storage device.

FIG. 3 is a side view of a seal fitting of the sealing means of the above embodiment.

FIG. 4 is a side view of another embodiment of the same seal fitting.

FIG. 5 is a vertical sectional side view of a main part of another embodiment of the heat storage device according to the present invention.

FIG. 6 is a vertical cross-sectional side view of a main part of still another embodiment of the heat storage device.

FIG. 7 is a perspective view of a still different embodiment of the heat storage device in the assembling state.

FIG. 8 is a perspective view showing an assembled state of the embodiment.

FIG. 9 is a cross-sectional plan view of still another embodiment of the heat storage device according to the present invention.

FIG. 10 is a vertical sectional front view of still another embodiment of the heat storage device.

FIG. 11 is a vertical sectional side view of still another embodiment of the heat storage device.

FIG. 12 is a perspective view of a tube protection member of the above embodiment.

[Explanation of symbols]

A ... Heat storage device, a ... Sealing means, b ... Band, H ... Electric heater, V1, V2 ... Check valve, 1 ... Tube, 2 ... Wax, 30 ... Caulking metal fitting, 31 ... Seal metal fitting, 32 ...
Through hole, 33 ... O-ring, 4 ... Metal material, 40 ... Core material, 41
... fins, 5 ... can body, 50 ... inlet pipe, 51 ... outlet pipe, 5
2 ... Partition plate, 53 ... Flow path, 6 ... Lid, 60/61 ... Pipe path,
70 ... Sheath part, 71 ... Heating wire, 72 ... Electrode terminal part, 8 ... Tube protection member, 80 ... Collar, 81 ... Arm.

Claims (4)

[Claims] 1. A flexible tube 1 that can be expanded and contracted is molded from rubber or a synthetic resin material, waxes 2 are filled in the tube 1, and an opening at the end of the tube 1 is sealed by a sealing means a. A heat storage device that is sealed. 2. A flexible metal tube 4 made of rubber or synthetic resin, which is expandable and contractible, is charged with a metal material 4 having an appropriate shape and having good thermal conductivity, and the metal material 4
Fill wax 2 so as to wrap it, and
Accumulator in which the opening at the end of the is sealed by the sealing means a. 3. An electric heater H is placed inside a flexible tube 1 made of rubber or synthetic resin and capable of expanding and contracting, and waxes 2 are provided around the electric heater H.
A heat storage device in which the opening portion at the end of the tube 1 is sealed by a sealing means a, the electrode terminal portion 72 of the electric heater H is held by the sealing means a, and is taken out to the outside. 4. An electric heater H loaded in the tube 1.
The heat storage device according to claim 3, further comprising a tube protection member 8 arranged around the inner wall surface of the tube 1 to separate the inner wall surface of the tube 1 from the electric heater H.