JPH08613Y2 - Structure of heat accumulator with conduit for heat pipe - Google Patents

Description

TECHNICAL FIELD The present invention relates to a structure of a heat storage device having a pipe line which is a part of a heat pipe therein, and more particularly to a heat storage device having a pipe line which is an evaporation part of the heat pipe. It is about.

2. Description of the Related Art A heat accumulator configured to convey the heat stored in a heat storage material to a predetermined place by a heat pipe, or to store the heat carried by the heat pipe in a heat storage material is used in various types of heat storage water heaters and waste heat recovery equipment. It is used in the heat related equipment. An example thereof is shown in FIG. This uses a metal block such as cast iron or stainless steel as a heat storage material, and the heat storage block 1 has a thin rectangular parallelepiped shape,
A horizontal hole 2 is formed through the lower part thereof, one end of which is sealed by a plug 3 and the other end of which is connected with a liquid flow pipe 4 forming a part of a heat pipe. The heat storage block 1 has a plurality of vertical holes 5 whose lower end opens to the lateral hole 2 and whose upper end opens to the upper surface of the heat storage block 1 along the vertical direction when the heat storage block 1 is installed. The upper end opening of each vertical hole 5 is connected to a header pipe 7 having a relatively large diameter via a short pipe 6.
A steam flow pipe 8 is connected to the header pipe 7.
The vapor flow pipe 8 is communicated with an upper part of a condenser 9 for exchanging heat with water, and the liquid flow pipe 4 is communicated with a lower part of the condenser 9 through an opening / closing valve 10 and a liquid reservoir 11. There is. The interiors of these pipes are vacuum-deaerated and then filled with a predetermined condensable fluid to form a part of a heat pipe.

Therefore, in the heat accumulator shown in FIG. 4, when the liquid-phase working fluid is supplied from the liquid flow pipe 4, the working fluid is evaporated by the heat stored in the heat storage block 1, and the vapor is collected in the header pipe 7. After that, the heat is transferred to the condenser 9 via the steam flow pipe 8, where the heat of the steam is given to water to become hot water, and the working fluid condensed by radiating heat flows down to the liquid reservoir 11.

Problems to be Solved by the Invention In the heat accumulator having the above-described configuration, it is general to increase the heat storage temperature in order to increase the amount of heat storage per unit volume, but the temperature of the working liquid in the liquid phase is the heat storage temperature. Since it is lower than that of No. 1, the following inconvenience occurred when starting to take out heat from the heat storage block 1. That is, when heat output is started in the configuration shown in FIG. 4, the on-off valve 10 is opened to allow the liquid-phase working fluid to flow into the horizontal holes 2 and the vertical holes 5 in the heat storage block 1. Since the heat storage block 1 is at a high temperature, the working fluid that comes into contact with the heat storage block 1 evaporates rapidly, and a flooding phenomenon occurs in which the liquid is blown off by the vapor. Leidenfrost phenomenon occurs in which the droplets remain as they are, and as a result, the heat exchange efficiency between the heat storage block 1 and the working fluid deteriorates, and the working fluid in the liquid phase becomes droplets and becomes a condensation part in the pipe. However, there was an inconvenience such as insufficient heat output.

This invention was made in the background of the above circumstances,
An object of the present invention is to provide a heat storage device capable of stably starting the heat output.

Means for Solving the Problems In order to achieve the above object, the present invention provides a heat storage device in which a pipe for a heat pipe is formed by penetrating a heat storage block made of a heat storage material. It is characterized in that it is arranged along the axial direction so as to be separated from the inner peripheral surface in the pipe line.

Further, in the present invention, a linear member may be provided on the inner peripheral side of the cylindrical body along the direction intersecting the axial direction.

Function In this invention, the pipeline formed through the heat storage block is a part of the heat pipe, and when the liquid-phase working fluid is supplied to this, the working fluid is heated by the heat storage block. Evaporate. When the liquid-phase working fluid is supplied, the temperature of the heat storage block is high, so that the Leidenfrost phenomenon and the flooding phenomenon occur, and the working fluid is scattered, but the direction is exactly along the axial direction of the pipe line. Since it is not a substance, it is captured by a tubular body provided in the conduit, and since the tubular body is a porous structure, gas-liquid separation is performed. Further, the linear body provided inside the cylindrical body also acts in the same manner to capture the droplets of the hydraulic fluid and separate the gas and liquid.

Embodiment Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a partial plan view showing an embodiment of the present invention, in which a heat storage block 20 for storing heat as sensible heat is formed in a relatively thin rectangular parallelepiped shape by using iron or ceramic as a heat storage material. A plurality of vertical holes 21 are formed in the heat storage block 20 in the vertical direction in the installed state, and each vertical hole 21 is opened on the upper surface of the heat storage block 20. This vertical hole 21 serves as an evaporation pipe of a loop heat pipe, and a wire mesh 22 is arranged in close contact with its inner peripheral surface, and a cylindrical shape made of a porous structure such as a wire mesh is formed at the center. The body 23 is arranged along the axial direction of the vertical hole 21. The state is shown in FIGS. 2 and 3. Also, as shown in these figures, the cylindrical body 23
On the inner peripheral side of the wire rod 24, a wire rod 24 formed by cutting and raising a part of the wire of the wire mesh that is the material or a tubular member 23 attached to the inner peripheral surface so as to project to the inner peripheral surface is It is provided in a direction intersecting with the direction.

Each of the vertical holes 21 is connected to a predetermined condensing part (not shown) that radiates heat to the outside so as to form a circulation pipe, and a condensable fluid such as water or freon is used as a working fluid in the circulation pipe. By enclosing it as a part of the loop heat pipe.

In the heat storage device having the above-mentioned configuration, the heat storage block 20 is heated and heated to store heat, and the heat is taken out by causing a liquid-phase working fluid to flow into each vertical hole 21 and evaporating the working fluid. When the heat output is started, if the temperature of the heat storage block 20 is high, the working fluid comes into contact with the inner surface of the vertical hole 21 to cause a flooding phenomenon or a Leidenfrost phenomenon, and a droplet of the working fluid is generated. A part of the liquid droplets is made to flow by the working fluid vapor and tries to flow, but the flow direction is the vertical hole 21.
Since it does not exactly follow the axial direction, the droplets of hydraulic fluid collide with and are captured by the cylindrical body 23 provided on the inner peripheral portion. Alternatively, the scattered droplets collide with the linear body 24 and are captured. In addition, the wire mesh 22 attached to the inner peripheral surface of the vertical hole 21
Also captures the droplets. The working fluid thus captured receives heat from the wire netting 22 and the tubular body 23, evaporates, and is used for heat transport.

Effects of the Invention As is clear from the above description, according to the present invention, the high temperature of the heat storage block enables the capture of the droplets of the working fluid generated at the time of heat output and the immediate evaporation of the working fluid. -The flow becomes smooth and the heat output can be started stably.

[Brief description of drawings]

FIG. 1 is a partial plan view showing an embodiment of the present invention, FIG. 2 is an enlarged view of a part thereof, FIG. 3 is a sectional view taken along the line III-III of FIG. 2, and FIG. It is a conceptual diagram of a water heater. 20 ... Heat storage block, 21 ... Vertical hole, 23 ... Cylindrical body, 24 ...
… Striatum.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Muneo Okada 1-3-1, Uchisaiwaicho, Chiyoda-ku, Tokyo Within Tokyo Electric Power Company (72) Inventor Shotaro Yoshida 1-1-5, Kiba, Koto-ku, Tokyo Fujikura Electric Wire Co., Ltd. (72) Inventor Masataka Mochizuki 1-5-1, Kiba, Koto-ku, Tokyo Fujikura Electric Line Co., Ltd. (72) Yuuji Saito 1-1-5, Kiba, Koto-ku, Tokyo Fujikura Electric Line Within the corporation

Claims (2)

[Scope of utility model registration request] 1. A heat storage device comprising a heat storage block made of a heat storage material and a pipe for a heat pipe penetrating through the heat storage block, wherein a tubular body having a porous structure is provided in the pipe with an axial line separated from an inner peripheral surface thereof. A structure of a heat accumulator having a pipe for a heat pipe, which is arranged along a direction. 2. A heat storage device having a pipe line for a heat pipe according to claim 1, wherein a linear member is provided on an inner peripheral side of the tubular member along a direction intersecting an axial direction. Structure of the vessel.