JPH0141515Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention relates to a seawater desalination device.

(Prior Art) Conventionally, seawater desalination devices include a natural evaporation method using solar heat and a reverse percolation method using a water-permeable membrane.

(Problem to be solved by the invention) The former natural evaporation method requires a large evaporation area and uses only solar heat, resulting in poor evaporation efficiency.

The latter reverse permeation method handles seawater at extremely high pressures, making the equipment complex and extremely expensive.
Desalination costs are high, and operation and operation are troublesome, making the equipment and use of the desalination process difficult for the general public.

(Means for Solving the Problems) The present invention attempts to solve the above problems, and its features are that it is formed into a spherical shape that is divided into upper and lower parts, and the upper half is made of a transparent material. The lower half consists of a combination of an evaporation tank container made of black material or painted inside, a heat exchanger, a vacuum pump, etc. Inside the evaporation tank container, a seawater inlet pipe is erected, and there are many A water sprinkler pipe with a through hole is provided, and a freshwater pipe connected to the upper part of the container is connected to the coil inside the heat exchanger outside the container, and the lower part is connected to the suction pipe of the vacuum pump. A liquid level control switch was installed on the bottom, and an automatic valve operated by the liquid level control switch was installed in the middle of the seawater introduction pipe. Seawater is pumped into the container, and the evaporated water in the container passes through freshwater pipes to reach the heat exchange coil, where it is cooled and installed.

(Embodiment) Reference numeral 1 denotes an evaporation tank container formed into a spherical shape and divided into two parts, the upper half 1a of which is made of a transparent material, and the lower half 1b made of a black material or whose interior is painted black.

2 is a seawater introduction pipe installed vertically in the tank, and 3 is a sprinkler pipe installed horizontally from the pipe and has a large number of through holes.

A liquid level control switch 4 operates a liquid level control panel 6 by raising and lowering a float 5 provided at the liquid level in the container 1. 7 is a heat exchanger outer cylinder, 8 is an internal heat exchange coil, the upper end of which is connected to the fresh water pipe 9 opened at the upper part of the evaporation tank container, and the lower end communicated with the suction conduit 11 of the vacuum pump 10. Become.

On the other hand, 12 is a seawater storage tank, 13 is a suction pipe, and the seawater in the tank 12 is sucked up through the suction pipe 13 as a vacuum is drawn in the container 1 by continuous operation of the vacuum pump 10. The seawater is introduced into the container 1 via the heat exchanger 7 and the seawater introduction pipe 2.

On the other hand, 14 is an automatic valve installed in the middle of the seawater introduction pipe 2, and the liquid level control panel 6 is activated by the on/off operation of the liquid level control switch 4 to close or open the automatic valve 14. The amount of seawater fed into the container 1 is adjusted by

In addition, 15 in the drawing is an activation switch.

Next, the effect will be explained.

When the vacuum pump 10 is operated, the pressure inside the evaporation tank container 1 decreases, and water is sprayed into the container from the water sprinkling pipe 3 via the seawater introduction pipe 2.

By the way, the evaporation tank container 1 collects solar heat inside through its transparent material, effectively raising the temperature inside the container, and therefore, the water evaporated by this is transferred to the heat exchange coil 8 through the fresh water pipe 9. Once cooled, they are sequentially taken out from the suction conduit 11.

During the above action, the residual water level in the tank container 1 rises when the amount of seawater flowing in exceeds the amount of evaporation. 14 is closed and the inflow of seawater is stopped, but since the vacuum pump 10 continues to operate, the remaining water in the tank container 1 continues to evaporate and fresh water is produced. When the remaining water in the tank container 1 falls below the specified water level, the liquid level control switch 4 stops operating, the automatic valve 14 opens, and the inflow of seawater begins again.

(Effects of the invention) According to the device of this invention, seawater is preheated by a heat exchanger and at the same time is efficiently heated by the solar heat collected in the container, and the atmospheric pressure inside the container is increased by operating a vacuum pump. This means that the evaporation is carried out at a low temperature, and the cooling of the evaporated water is carried out in an exchanging manner through heat exchange with the inflowing seawater, making it an extremely superior device in terms of performance. . Moreover, since the overall structure is simple and can be miniaturized, the equipment cost is low and the operation is easy.

[Brief explanation of drawings]

The drawing is a schematic explanatory diagram showing an example of the device of the present invention. 1... Evaporation tank container, 2... Seawater introduction pipe, 3... Water sprinkler pipe, 4... Liquid level control switch, 6
... Liquid level control panel, 8 ... Heat exchange coil, 9 ... Fresh water pipe, 10 ... Vacuum pump, 12 ... Seawater storage tank,
14...Automatic valve.

Claims (1)

[Scope of utility model registration request] It is formed into a spherical shape divided into upper and lower parts, the upper half is made of transparent material, and the lower half is made of black material or the inner surface is painted. It consists of a combination arrangement of an evaporation tank container, a heat exchanger, a vacuum pump, etc. A seawater inlet pipe is installed vertically inside the evaporation tank container, and a sprinkler pipe with many through holes is installed in this pipe.On the other hand, a freshwater pipe connected to the upper part of the container is connected outside the container to the inside of the heat exchanger. It is connected to the coil, and the lower part is connected to the suction conduit of the vacuum pump, and on the other hand, a liquid level control switch is installed on the bottom of the container, and an automatic valve operated by the liquid level control switch is installed in the middle of the seawater introduction pipe. In addition, by operating a vacuum pump, the seawater sucked up through the heat exchanger outer cylinder is pumped into the container, and the evaporated water in the container is passed through freshwater pipes to the heat exchange coil, where it is cooled and taken out. A distinctive seawater desalination device.