JP2001254402A - Water gathering method from air and device therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain water from air by using a temperature difference between air of nighttime and the ground. SOLUTION: Water is gathered by sticking a waterdrop separated from the air to an inner wall of a cooling pipe in a process of exhausting the air by cooling the air by the colling pipe 4 erected on the ground surface after heating the air sucked in from a suction pipe 1 erected on the ground surface by a heating pipe 3 buried in the ground. This device is composed of the suction pipe, the heating pipe, the cooling pipe, a fan for sucking and exhausting the air, a power source such as a solar power generation system for driving the fan and a water storage tank 7. Besides this device can be inexpensively manufactured by a simple device, a running cost can be reduced when using natural energy.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simple method for obtaining moisture in the air by utilizing a temperature difference between the air and the ground in a place where it is difficult to obtain water, such as an arid zone or a desert zone. The present invention relates to a method and an apparatus used for the method.

[0002]

2. Description of the Related Art A distillation method, a multi-effect vacuum distillation method, a solar heat distillation method, a crystallization method, a membrane method, and the like have been put to practical use as a method for removing fresh water from seawater by removing salt. However, these methods cannot be adopted except where seawater is easily obtained, that is, near the coast. In addition, large equipment and a large amount of Ekirgi are required.

On the other hand, as a method for obtaining moisture contained in air, a sheet such as a plastic sheet that does not allow water to pass through is provided above the land, and at night when the temperature drops, water vapor in the air condenses on the sheet. A method for collecting attached water droplets is known.

[0004]

In this method, very little water is collected and can only be used in an emergency such as in the case of a distress.

The inventor of the present invention believes that the nighttime temperature is lower than the daytime temperature, and that the underground temperature is higher than the nighttime temperature, especially in arid land in a flat land between 30 ° N and 30 ° S, In the zone, the daytime temperature is 40 ° C or higher, but at night the temperature drops sharply from 3 ° C to 0 ° C, while the underground temperature does not change day and night and is 30cm from the surface. It was noted that the temperature was 15 ° C. to 20 ° C. at a depth of 50 cm to 15 ° C., and 15 ° C. at a depth deeper than that, which was higher than the nighttime outside air temperature and was stable.

The problem to be solved by the present invention is to take advantage of the phenomenon that the temperature in the daytime is high but the temperature in the night falls below the underground temperature where the temperature is relatively stable. Obtaining irrigation water for trees from the air with a simple device.

[0007]

According to the method of the present invention, air containing water droplets is introduced from an intake pipe into a heating pipe buried in the ground at a temperature higher than the air and heated, and then the cooling pipe returns to the air. In the process of exhausting into the air, it is characterized in that water droplets separated from the air and adhered to the inner wall of the cooling pipe, that is, dew condensation are collected and collected.

An apparatus for realizing the above method includes a heating pipe buried in the ground, an intake pipe erected on the ground in communication with the heating pipe, and an erecting pipe in communication with the heating pipe. A cooling pipe provided, a water storage tank buried underground, a water pipe communicating the cooling pipe with the water storage tank, and an air intake pipe for taking in air and discharging from the cooling pipe, provided inside each of the pipes. And a power supply for driving the fan.

[0009]

When the temperature at night falls below the temperature in the ground, during the daytime, solar heat causes moisture on the ground and underground to rise from the ground as water vapor by capillary action and mix with air. This air is cooled by the radiation cooling phenomenon from nighttime to before and after sunrise, and becomes a state including water droplets. The air containing the water droplets is introduced from the intake pipe into the heating pipe. After heating the introduced air with a heating pipe buried underground at a temperature higher than the air, the air is exhausted with a cooling pipe. Since the cooling pipe is cooled by the outside air, water droplets in the air heated by the heating pipe are separated from the air and adhere to the inner wall of the cooling pipe. The water droplets attached to the inner wall are collected and used for daily water, irrigation water and the like.

The introduction of air from the intake pipe and the exhaust from the cooling pipe through the heating pipe are performed by driving a fan by power transmission from a power supply, for example, a solar cell system. The water droplets that have condensed on the inner wall of the cooling pipe accumulate in the water storage tank through the water pipe along the inner wall. The water stored in the water storage tank is pumped out by hand or by hand.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference numeral 1 denotes an intake pipe having an intake port 2 at an upper end and a lower end buried in the ground and provided from the ground. A heating pipe 3 has a front end (the left end in FIG. 1) which communicates with the lower end of the intake pipe and communicates with the intake pipe, and is buried underground substantially parallel to the ground. A cooling pipe 4 communicates with the intake pipe. The lower end of the cooling pipe is connected to the rear end (the right end in FIG. 1) of the heating pipe, and rises from the lower end and is provided from the ground. 5 is an exhaust port.
Note that the intake pipe 1 is set up obliquely so as to easily take in air and send it to the heating pipe 3, and the angle formed by the intake pipe and the heating pipe is made obtuse. Also, the intake pipe and cooling pipe are
It is supported by a support member (not shown).

In the illustrated example, each of the tubes 1, 3, 4 has an inner diameter of about 1
7.5 cm, the intake pipe 1 and the heating pipe 3 are made of a material having high thermal conductivity and non-corrosive, such as a copper alloy such as gunmetal, an aluminum alloy, and stainless steel. The cooling pipe 4 is made of plastic,
It is formed of a material that does not corrode, such as glass fiber. Each of these pipes may be formed by connecting appropriately divided pipes using a pipe joint or the like. The height from the ground is about 1 m near the ground for the intake port 2 and about 4 m for the exhaust port 5. The length of the heating tube 3 is about 20 m in order to lengthen the heating time due to the underground heat. Although not shown, the heating tube may be meandering and is buried to a depth of about 30 to 50 cm. Similarly, in order to lengthen the cooling time due to a decrease in night temperature, the cooling pipe 4 is meandered or formed in a helical spring shape.

Reference numeral 6 denotes a water supply pipe communicating with the cooling pipe 4, which is connected to a lower end of the cooling pipe at the start of rising, and communicates with a water storage tank 7 buried underground. Reference numeral 8 denotes a water intake pipe, which takes out water W in the water storage tank by a pump connected to a water intake pipe (not shown) or embeds a well or a girder-shaped frame communicating with the water storage tank, and pumps out water through this frame.

Reference numeral 9 denotes a fan which takes in air from the intake port 2 and sequentially sends air to the intake pipe 1, the heating pipe 3, and the cooling pipe 4.
It is discharged from the exhaust port 5. Therefore, it is disposed inside each of the pipes 1, 3, and 4 via a support member (not shown), such as near the base of the intake pipe, at an appropriate location of the heating pipe, near the base of the cooling pipe and near the exhaust port. The location of the fan and the number of the fan are arbitrary depending on the shape of each tube 1, 3, 4 and the size of the inner diameter.

Reference numeral 10 denotes a solar cell system which is a power supply installed on the ground, which is composed of a solar cell, an inverter, and a battery, sends electricity to each of the fans 9, and drives the fans.
This solar cell system may be provided with a temperature sensor (not shown) to transmit power to the fan when the outside air temperature falls to a set value, and to stop power transmission when the temperature rises above the set value. Of course, power transmission to the fan and power transmission stop can also be manually performed. As the power source, a combination of a generator and a battery driven by a diesel engine or a gasoline engine can be used. In addition, solar heat,
It is also possible to use natural energy such as wind and geothermal heat to inhale air from an intake pipe, exhaust air from a cooling pipe through a heating pipe.

A filter is attached to the intake port 2 of the intake pipe 1 and the exhaust port 5 of the cooling pipe 4 in order to prevent foreign substances such as sand and insects from entering. It is preferable to attach a lid that opens and closes the intake of the water pipe in conjunction with the fan 9 or manually.

[0017]

According to the present invention, since the structure is simple, it can be installed at a small cost, and the running cost can be reduced by using solar energy.

[Brief description of the drawings]

FIG. 1 is a side view.

[Procedure amendment]

[Submission date] March 21, 2000 (200.3.2
1)

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claim 1

[Correction method] Change

[Correction contents]

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] Claim 3

[Correction method] Change

[Correction contents]

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction contents]

The introduction of air from the intake pipe and the exhaust from the cooling pipe via the heating pipe are performed by driving a fan by power transmission from a power supply, for example, a photovoltaic power generation system. The water droplets that have condensed on the inner wall of the cooling pipe accumulate in the water storage tank through the water pipe along the inner wall. The water stored in the water storage tank
Pump or pump out by hand.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0015

[Correction method] Change

[Correction contents]

Reference numeral 10 denotes a solar power generation system as a power source installed on the ground, which is composed of a solar cell, an inverter, and a battery, sends electricity to each of the fans 9, and drives the fans. The solar power generation system may be provided with a temperature sensor (not shown) so that the fan transmits power when the outside air temperature falls to a set value, and stops power transmission when the outside air temperature rises above the set value. Of course, power transmission to the fan and power transmission stop can also be manually performed. As the power source, a combination of a generator and a battery driven by a diesel engine or a gasoline engine can be used. Furthermore, it is also possible to use natural energy such as solar heat, wind, and geothermal to inhale air from an intake pipe and exhaust air from a cooling pipe through a heating pipe.

[Procedure amendment 6]

[Document name to be amended] Drawing

[Correction target item name] Fig. 1

[Correction method] Change

[Correction contents]

FIG.

Claims (3)

[Claims] 1. A method using a temperature difference between air and the ground, wherein air containing water droplets is introduced from an intake pipe into a heating pipe buried in the ground at a temperature higher than the air, heated, and then exhausted. A method for collecting water from the air by collecting water droplets separated from the air and adhering to the inner wall of the exhaust pipe in a process of exhausting the air into the air again from the pipe. 2. A heating pipe buried in the ground, an intake pipe erected on the ground in communication with the heating pipe, a cooling pipe erected on the ground in communication with the heating pipe, A water tank to be buried, a water pipe for communication between the cooling pipe and the water tank, a fan provided inside each pipe for taking in air from an intake pipe and discharging it from the cooling pipe, and a power supply for driving the fan A device for collecting water from air. 3. The water sampling device according to claim 2, wherein the power source is a solar cell system.