JPH06213513A - Heat storage device - Google Patents

Abstract

PURPOSE:To offer a small heat storage device capable of supplying a large amount of hot-water instantaneously. CONSTITUTION:Alumina balls 13 are filled in a drum 1 as heat storage medium and a heater 14 is inserted into the drum 1 from the bottom to heat the alumina ball 13. In addition, perforated pipes 15 are inserted through the bed of the alumina balls 13, and steam generated is taken into the pipes 15 as the pipes 15 are in contact with the alumina balls 13, and led to the upper part of the drum 1 without a hindrance of the alumina balls 13. The steam introduced flows through a steam pipe 6 and blows into a condenser 5 from a steam blow port 7 to heat up water in a bathtub 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat storage device used for heating bath water and the like.

[0002]

2. Description of the Related Art As a heat storage device used as a heater for bath water or an instantaneous water heater, those disclosed in Japanese Utility Model Laid-Open No. 60-10159 and Japanese Patent Laid-Open No. 2-85620 are known. The heat storage device disclosed in Japanese Utility Model Laid-Open No. 60-10159 has a heater installed therein and a pipe is passed through an airtight can body filled with the heat storage material to heat the heat storage material by using midnight power. The hot water is instantaneously obtained by flowing water through the water supply pipe when necessary. The heat storage device disclosed in Japanese Patent Laid-Open No. 2-85620 is disclosed between the heat storage device and the heat exchanger. A heat transfer tube is arranged to heat the water in the water supply tube in the heat exchanger.

[0003]

In all of the conventional heat storage devices described above, heat is transferred to water through the water supply pipe, so that the heat transfer area is small and the heat from the heat storage material is small. The take-out speed is not fast enough. Therefore, when it is applied to a bathtub, a large amount of hot water must be produced in a short time, and the heat storage device becomes large.

[0004]

In order to solve the above-mentioned problems, the first invention of the present application is to provide a heater inside and open a water supply pipe and a steam pipe in an airtight can body filled with a heat storage material, and A perforated tube was provided inside the can for transferring steam generated by contact with the heat storage material toward the steam pipe.

Further, in the second invention of the present application, a heater is provided inside and a water supply pipe and a steam pipe are opened in an airtight can body filled with a heat storage material, and a tip of the steam pipe is made to face an ejector.

[0006]

By providing a perforated tube inside the can, the steam generated when water contacts the heat storage material can be efficiently collected in the steam tube. In addition, by providing a pressure reducing means inside the can for sucking vapor and depressurizing the inside of the can at the tip of the steam pipe, it is possible to prevent the pressure inside the can from becoming high, and therefore the boiling point is lowered and a large amount of vapor can be generated. .

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings. Here, FIG. 1 is a vertical cross-sectional view of the heat storage device according to the first invention, FIG. 2 is a cross-sectional view of the heat storage device, and FIG. 3 is an enlarged view of a main part of a perforated pipe. The example which attached the heat storage device to the bathtub is shown.

In the heat storage device, the outside of a stainless steel airtight can body 1 is surrounded by a heat insulating material 2, one end of a water supply pipe 3 is opened at the bottom of the can body 1, and the other end of the water supply pipe 3 is connected to a bath 4. The condenser 5 provided outside the bottom is opened. Further, one end of a steam pipe 6 is opened on the upper side surface of the can body 1, and a steam outlet 7 provided at the tip of the steam pipe 6 faces the inside of the condenser 5.

Further, the water supply pipe 3 is provided with a circulation pump 8, a flow rate adjusting valve 9 and a check valve 10, and the steam pipe 6 is provided with a flow rate adjusting valve 11 and a check valve 12 so that the water in the bath 4 Can body 1
The steam passes through the inside and returns to the bathtub 4.

A diameter 2c as a heat storage material is provided inside the can body 1.
About m m of alumina balls 13 are filled, and a heater 14 for heating the alumina balls 13 is inserted into the can body 1 from the bottom of the can body 1, and the alumina balls 13 are sewn together to form a perforated tube 15. It is arranged. This perforated tube 15
As shown in FIG. 3, a hole 16 having a diameter smaller than that of a large number of heat storage materials is formed over the entire length, and the steam generated when the feed water comes into contact with the alumina balls 13 is taken into the pipe from the hole 16 and The steam is guided to the upper portion of the can body 1 without being hindered by the balls 13, and a mesh tube or the like in which a wire mesh is formed into a tubular shape may be used. In addition, 17 in the figure
Is a relief valve that operates when the pressure in the can body 1 rises abnormally.

In the above, the flow rate adjusting valve 9 of the water supply pipe 3 and the flow rate adjusting valve 11 of the steam pipe 6 are opened, and the pump 8 is driven to supply the water in the bath 4 into the can body 1. Then, the supplied water comes into contact with the alumina balls 13 already heated by the heater 14 to become steam. This steam is guided to the upper portion of the can body 1 through the perforated tube 15 as described above.

Since the pressure inside the can body 1 is higher than that inside the condenser 5 due to the generation of steam, the steam led to the upper part of the can body 1 passes through the steam pipe 6 and the steam outlet 7. It spouts into the condenser 5 to heat the water in the bathtub 4.

FIG. 4 is a longitudinal sectional view of the heat storage device according to the second aspect of the present invention. The same members as those of the heat storage device are designated by the same reference numerals and the description thereof will be omitted. In this heat storage device, a circulation pump 8 is provided in the middle of the water supply pipe 3 that is led out from the lower portion of the bath 4 and reaches the bottom of the can 1, and the pressure inside the can is reduced in the return pipe 19 that branches from the downstream side of the circulation pump 8 to the bath. An ejector 18 is provided as a means. Further, a flow rate adjusting valve 20 is provided on the return pipe 19 on the upstream side of the ejector 18, a flow rate adjusting valve 9 is provided on the downstream side, and the water supply pipe 3 is opposite to the flow rate adjusting valve 21 on the downstream side from the branch point of the return pipe. A stop valve 10 is provided.

The ejector 18 is constructed by squeezing a part of the return pipe 19 branched from the water supply pipe 3 to form an orifice, and connecting the tip of the steam pipe 6 to this orifice.

In the above, the check valve 10 of the water supply pipe 3,
Flow rate adjusting valve 21, check valve 12 of steam pipe 6, return pipe 1
The flow rate adjusting valves 9 and 20 of 9 are opened, and the circulation pump 8 is driven to supply the water in the bath 4 into the can body 1 and also to flow into the return pipe 19. Then, the supplied water is supplied to the alumina balls 1 already heated by the heater 14.
3 into steam, which is mixed with water in the return pipe 19 at the ejector 18 via the steam pipe 6,
The water in the bathtub 4 is heated by returning to the bathtub 4 through the return pipe 19.

Here, the provision of the ejector 18 positively sucks the steam from the inside of the can body 1 and suppresses an increase in the pressure inside the can body 1, and as a result, the boiling point is lowered and a large amount of steam is generated. be able to. Further, the same effect can be obtained by depressurizing the inside of the can body 1 by sucking steam using a pump instead of the ejector.

FIG. 5 is a vertical sectional view of a heat storage device according to another embodiment. This embodiment is a combination of the heat storage devices of the first invention and the second invention, and a hole is formed in the can body 1. Tube 1
5 is arranged and the tip of the steam pipe 6 is connected to the ejector 18
To face.

[0018]

As described above, according to the present invention,
A heater is installed inside, and a water supply pipe and a steam pipe are opened in an airtight can body filled with a heat storage material, and steam generated in contact with the heat storage material in the can body is transferred toward the steam pipe. Since the perforated pipe is provided, the steam generated by contact of water with the heat storage material can be efficiently collected in the steam pipe, and a large amount of hot water can be produced in a short time.

Further, according to the present invention, since the pressure reducing means in the can for depressurizing the inside of the can is provided at the tip of the steam pipe opened in the can, it is possible to prevent the pressure inside the can from becoming high. Therefore, the boiling point is lowered, and a large amount of vapor can be generated as described above. Therefore, the water in the bathtub or the like can be heated in a short time by the small-capacity heat storage device. Further, since the pressure inside the can does not increase, strength is not so required.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of a heat storage device according to a first invention.

FIG. 2 is a transverse sectional view of the heat storage device.

[Fig. 3] Enlarged view of the main part of a perforated tube

FIG. 4 is a longitudinal sectional view of a heat storage device according to a second invention.

FIG. 5 is a longitudinal sectional view of a heat storage device according to another embodiment.

[Explanation of symbols]

1 ... Can body, 3 ... Water supply pipe, 4 ... Bathtub, 5 ... Condenser, 6 ... Steam pipe, 8 ... Pump, 13 ... Alumina ball (heat storage material),
14 ... Heater, 15 ... Perforated tube, 18 ... Ejector, 1
9 ... Return pipe.

Claims (2)

[Claims] 1. An airtight can body having a heater therein and filled with a heat storage material, a water supply pipe and a steam pipe opening into the can body, and steam generated by contacting the heat storage material with the steam. A heat storage device equipped with a perforated pipe provided inside a can for transfer to a pipe. 2. An airtight can body having a heater inside and a heat storage material filled therein, a water supply pipe and a steam pipe opening into the can body, and a can provided at the tip of the steam pipe for sucking steam. A heat storage device provided with a can decompressing means for decompressing the inside of a body.