JPS5913678B2 - heat storage device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a heat storage device including means for transporting heat from a heat collector to a heat storage tank.

[Background of the invention]

A device that collects solar heat with a collector, stores it, and uses it as needed requires a means to transfer the heat.

When pump power is used as a means of transferring heat, reliability of mechanically moving parts becomes a problem.

It is also necessary to prevent heat from being wasted during the night.

[Purpose of the invention]

An object of the present invention is to prevent the heat stored in the heat storage tank during the day from being released to the atmosphere at night, and to improve the reliability of the device.

[Summary of the invention]

A feature of the present invention is that heat is transferred between the evaporator and the condenser using a bubble pump.

[Embodiments of the invention]

Hereinafter, the present invention will be explained in detail with reference to Examples.

FIG. 1 is a schematic configuration diagram of a heat storage device of the present invention.

An evaporator 1 installed in the condensing part of a heat collector 11 (for example, a concave mirror) and a condenser 3 buried in a heat storage material 9 (for example, water or calcium chloride) in a heat storage tank 8 are connected by a steam transfer pipe. 2
, liquid downcomer pipe 4, and riser pipe 6 are connected to form a closed circulation path, and in the closed circulation path, an amount of evaporative liquid that can be stored in a tank 5 provided at the lower part of the condenser 3 is stored. 7 (for example, water, Freon, etc.).

A heater 12 is attached to the lower part of the riser pipe 6, thereby forming a bubble pump.

When input is applied to this heater 12, the liquid 7 inside it
receives that heat and boils.

The bubbles generated at this time rise in the riser pipe due to buoyancy, and along with this, the liquid 7 is also pushed up by the piston action of the bubbles, passing over the top 61 of the riser pipe 6 and flowing into the evaporator 1. .

The liquid 7 that has flowed into the evaporator 1 receives heat collected by the heat collector 11 and evaporates.

The steam generated at this time moves through the steam transfer pipe 2 toward the condenser 3 due to the steam pressure difference, where it releases latent heat of condensation and is liquefied.

The condensation heat released at this time is stored in the heat storage material 9.

On the other hand, the condensed liquid 7 passes through the condenser 3 and accumulates in a tank 5 provided at the bottom thereof.

This liquid 7 passes through the liquid downcomer pipe 4 and enters the riser pipe section 6, receives heat generated by the heater 12 again, and repeats the same cycle.

Since light cannot be collected by the heat collector 11 at night, it is better to turn off the input to the heater 12, and at this time the liquid 7 remains stored in the tank 5.

That is, since there is no liquid 7 in the condenser 3, the heat in the heat storage tank will not escape to the outside due to the convection.

The top 61 of the riser pipe 6 and the steam transfer pipe 2 are connected to the steam release pipe 10.
The vapor generated by the heater 12 is allowed to escape into the vapor transfer pipe 2 through this pipe 10, and only the liquid 7 is allowed to enter the evaporator 1.

FIG. 2 shows another embodiment.

In this case, the riser pipe 6 is inserted into the evaporator 1 up to the upper part.

In this way, the steam generated in the riser pipe 6 can be easily released to the steam transfer pipe 2 without installing the steam release pipe 10.

Figure 3 is also another example (only the heat collecting part and the area around the riser pipe are shown)
It is.

The riser pipe 6 is connected to the upper end of the evaporator 1 from outside.

In addition, the tank 5 is made by winding a part of the liquid downcomer pipe 4 several times.
This allows the liquid 7 to be contained therein.

〔Effect of the invention〕

As explained above, according to the present invention, the liquid is transported to the evaporator by a method without mechanically moving parts, that is, by a bubble pump,
Heat can be transported from the evaporator to the condenser, improving reliability.

Additionally, at night, by simply turning off the input to the bubble pump's heater, it was possible to prevent the heat stored in the heat storage tank from escaping.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a heat storage device of the present invention, and FIGS. 2 and 3 are diagrams showing other embodiments.

Claims (1)

[Claims] 1 In a heat storage device equipped with an evaporator installed in a heat collector and a condenser installed in a heat storage tank and having a tank at the bottom, the evaporator and condenser are connected to a vapor transfer pipe, a liquid downcomer pipe, or a vertical By connecting the riser pipe to form a closed circulation path, filling the closed circulation path with an amount of evaporative liquid that can be stored in the tank, and inputting an input to a heater provided in the riser pipe section. , a heat storage device that allows heat to be transported from the evaporator to the heat storage condenser.