JP4898279B2 - Geothermal air-conditioning system and method with negative ion generation function - Google Patents

Description

  The present invention relates to a new air-conditioning mechanism and method using a ground heat exchanger.

  In recent years, an air-conditioning mechanism using a double-pipe underground heat exchanger has been widely used as disclosed in Patent Document 1. This air conditioning mechanism is effective for adjusting temperature and humidity.

JP 2004-212038 A JP 2006-46683 A

  An object of the present invention is to provide a new air-conditioning mechanism and method using a double-pipe underground heat exchanger.

The geothermal air-conditioning system having a negative ion generation function according to the present invention includes an outer pipe whose upper end is opened but whose lower end is closed as a bottom and water is stored in the bottom, and the interior of the outer pipe A double pipe embedded in the ground, and a treatment introduced into the gap between the outer pipe and the inner pipe. A slit plate through which target air passes, and is arranged in the vicinity of the upper surface of the water surface of the outer tube bottom in the gap, and is formed with a plurality of thin slits, and the air descending from above in the gap When passing through the plurality of slits, the air is converted into a plurality of fine high-speed jets to collide with the water surface, thereby generating splashes from the water surface, and negative ions in the air near the upper surface of the water surface To generate The slit plate and the air to be treated are fed into the gap between the inner tube and the outer tube, and are exchanged with geothermal heat in the gap and include negative ions generated by splashing from the water surface of the bottom of the outer tube. And air feeding means for supplying air into the room through the inside of the inner pipe from the vicinity of the bottom of the outer pipe.
Further, the geothermal air conditioning method having a negative ion generation function according to the present invention includes an outer pipe having an upper end that is open but a lower end that is closed as a bottom and water is stored in the bottom, and the outer pipe An air-conditioning method using a double pipe embedded in the ground, which is composed of an inner pipe whose upper end and lower end are both open. A step of sending the air into the gap between the inner pipe and the outer pipe from above, exchanging heat with the geothermal heat in the gap, and a slit plate formed with a plurality of thin slits in the bottom of the outer pipe in the gap The air descending from above in the gap is passed through the plurality of slits, and in the process, the air is converted into a plurality of thin high-speed jets. The high speed jet flow Colliding with the water surface, thereby generating splashes from the water surface, generating negative ions in the air near the upper surface of the water surface, and air containing the negative ions from the vicinity of the bottom of the outer tube. And supplying to the room through the inside of the inner pipe.

  According to the present invention, the air descending from above in the gap is passed through the plurality of slits, and in the process, the air is converted into a plurality of thin high-speed jet flows, and the plurality of thin high-speed jet flows Is caused to collide with the water surface, thereby generating splashes from the water surface, and as a result, negative ions are generated in the air near the upper surface of the water surface, and the air containing the negative ions generated in this way, Since it is sent into the inner pipe through the bottom of the outer pipe and further sent into the room, conditioned air containing a large amount of negative ions can be supplied to the user.

FIG. 1 is an explanatory diagram of the method of the present invention.
FIG. 2 is an explanatory view when the structure of the inner tube of FIG. 1 is different.
1 and 2, the underground heat exchanger has a double-tube structure in which an inner tube having both ends opened is loosely fitted to an outer tube having a sealed end and an open other end. . The underground heat exchanger is embedded in the basement with the outer tube tip down, and after flowing outside air through the gap between the outer tube and the inner tube to exchange heat with the geothermal surface in contact with the outer tube Then, it collides with the liquid level of the water stored at the bottom of the outer tube.

In FIG. 1, the air that collided with the liquid surface is reversed in the direction from the gap between the inner tube and the liquid surface to the inside of the inner tube, makes a U-turn, flows upward through the inner tube, and exits. Released. In FIG. 2, since the tip of the inner tube is immersed in the liquid surface, the air that collided with the liquid surface enters the inner tube from the hole that is not immersed in the liquid surface opened on the side surface of the inner tube. Flow, reverse direction, make a U-turn and flow upward through the inner tube. Alternatively, the tip of the inner tube is made into a porous mesh, flows from the mesh hole not immersed in the liquid surface to the inside of the inner tube, reverses the direction, makes a U-turn, passes through the inner tube Flows upward.
It is more economical that the flow velocity of the air colliding with the water surface is approximately 1.5 m / sec or more and the upper limit is 4.0 m / sec or less.

  Splashes are generated on the water surface due to the collision of air. Splashes are generated on the water surface by striking a thin high-speed jet flow. In order to impinge a thin high-speed jet flow, the jet may be jetted from a thin slit.

  In the air-conditioning mechanism of the present invention, the water stored at the bottom of the underground heat exchanger is carried away due to the collision air, so that the water level gradually decreases. In order to prevent the water level from dropping, it is essential to provide a water level sensor and automatically replenish water when the water level drops to a certain level. In order to clean the inner surface of the pipe, it is necessary to provide a pipe cleaning device on the inner surface of the top portion of the outer pipe so that the inner surface of the pipe is always kept clean. Replenishment of water to prevent a drop in water level may be supplied from a pipe cleaning device. In accordance with this, it is preferable to install a device for pumping out water accumulated at the bottom.

FIG. 3 is a diagram illustrating this.
A liquid level sensor is provided above the liquid level of the outer tube, and a pipe cleaning device is provided on the top inner surface of the outer tube.
The slit used for air collision is installed at the position shown in FIG.
Although not shown in FIG. 3, an apparatus for drawing water accumulated at the bottom to the outside is also provided as appropriate.

As shown in FIG. 4, a ground stone heat exchanger (heat storage layer) may be provided in the underground heat exchanger. That is, outside air may be passed through a heat storage layer to adjust humidity and temperature in the first stage, and then passed through an underground heat exchanger to adjust humidity and temperature.
Guristone is a stone with a diameter of 30 to 200 mm piled on the ground surface from a depth of several tens of centimeters below the first floor of the building to a deposition thickness of approximately 40 to 50 cm.
The upper surface of the deposited layer is covered with a heat insulating sheet. In addition, a moisture-proof sheet is provided on the bottom surface of the deposited layer to prevent moisture from rising from the ground. This sheet has a structure that prevents water droplets and the like generated in the guristone layer from penetrating into the ground through the sheet, but preventing moisture from rising from the ground. This can be achieved by laying a plurality of sheets on the whole so as to form overlapping portions by shifting the positions. In other words, moisture and moisture can be prevented from rising from the ground, but moisture from above can permeate outside through the gap between the overlapping portions.
In particular, in the case of waterproofing, a concrete bottom can sufficiently achieve the object.
Geothermal heat is maintained at a temperature of 13-18 ° C. throughout the four seasons, and the gritite deposits are affected by the geothermal heat and are maintained at a temperature of 20-24 ° C. in the summer and 15-19 ° C. in the winter. Yes.
There is a gap between the accumulated stones and stones, and the outside air is cooled when passing through the stones, and the first stage of dehumidification and cooling is performed with the stones. Become.

When splashes are generated by the air colliding with the liquid surface, air containing a large amount of negative ions is generated. Air-conditioned air with a mental healing effect can be obtained.
By placing an inorganic mineral such as tourmaline in the water, a larger amount of negative ions is generated.

  It is preferable to install the ore that generates negative ions (tourmaline, etc.) on the surface of the ground heat exchanger where water droplets are easily generated or in the water. It is not particularly limited as long as it is a part of the inner / outer tube of the exchanger.

  In FIGS. 1 to 4, it has been described that outside air flows through the underground heat exchanger. However, the underground heat exchanger according to the present invention is not limited to only outside air, and recirculates air circulated in the room. Alternatively, air conditioned by other methods may be used.

Reference example 1
Specifications of underground heat exchanger Structure of underground heat exchanger: Structure of Fig. 2 Outer tube: Outer diameter φ250mm, Length: 5,000mm
Outer tube material: 3.2 mm thick aluminum pipe Inner tube: outer diameter φ157.6 mm, length: 5,000 mm
Inner tube material: Polyethylene pipe with a thickness of 3.8mm
Air flow rate: 350m3 / h
Air collision area: about 0.047m2
Air flow rate: 2.1m / sec
Volume of water stored at the bottom: 15 liters for the first time, 27 liters for the second time

Reference example 2
Specifications of underground heat exchanger Structure of underground heat exchanger: Structure of Fig. 2 (2 series connected in series)
(A structure that allows air to collide by passing a hole in the side of the inner tube)
Outer tube: outer diameter φ250mm, length: 5,000mm
Outer tube material: 3.2 mm thick aluminum pipe Inner tube: outer diameter φ157.6 mm, length: 5,000 mm
Inner tube material: Polyethylene pipe with a thickness of 3.8mm
Air flow rate: 850 m3 / h (425 m3 / h x 2)
Air collision area: 0.047m2 × 2
Air flow rate: 2.5m / sec
Volume of water stored at the bottom: 30 liters (15 liters x 2)

Reference example 3
Specifications of the underground heat exchanger Structure of the underground heat exchanger: Structure of Fig. 2 (Structure that allows air to collide by making a hole in the side of the inner pipe)
Outer tube: outer diameter φ250mm, length: 5,000mm
Outer tube material: 3.2 mm thick aluminum pipe Inner tube: outer diameter φ157.6 mm, length: 5,000 mm
Inner tube material: Polyethylene pipe with a thickness of 3.8mm
Air flow rate: 1000 m3 / h (500 m3 / h x 2)
Air collision area: 0.047m2 x 2
Air flow rate: 3.0m / sec
Volume of water stored at the bottom: about 15 liters / bottle

FIG. 1 is an explanatory view of the structure of the underground heat exchanger used in the present invention. FIG. 2 is an explanatory view of another structure of the underground heat exchanger used in the present invention. FIG. 3 is an explanatory view of another structure of the underground heat exchanger used in the present invention. FIG. 4 is an explanatory view when the grit stone is used in combination with the present invention.

Claims (2)

An outer pipe whose upper end is opened but whose lower end is closed as a bottom and water is stored in the bottom, and inserted into the outer pipe and whose upper and lower ends are both open. A double pipe buried in the ground consisting of a pipe,
A slit plate through which air to be processed introduced into a gap between the outer pipe and the inner pipe passes, and is disposed near the upper surface of the water surface of the bottom of the outer pipe in the gap, and is a plurality of thin plates A slit is formed, and when the air descending from above in the gap passes through the plurality of slits, the air is converted into a plurality of thin high-speed jets to collide with the water surface, and thereby the water surface A slit plate for generating splashes and generating negative ions in the air near the upper surface of the water surface;
The air to be treated is sent into the gap between the inner pipe and the outer pipe, and the air containing the negative ions generated by the splash from the water surface at the bottom of the outer pipe that is heat-exchanged with the geothermal heat in the gap, An air feeding means for supplying air into the room from the vicinity of the bottom of the outer pipe through the inner pipe;
A geothermal air-conditioning system equipped with a negative ion generation function. An outer pipe whose upper end is opened but whose lower end is closed as a bottom and water is stored in the bottom, and inserted into the outer pipe and whose upper and lower ends are both open. An air conditioning method using a double pipe embedded in the ground, comprising a pipe,
Sending air to be treated from above into the gap between the inner tube and the outer tube, and allowing the air to exchange heat with geothermal heat in the gap;
A slit plate formed with a plurality of thin slits is disposed in advance near the upper surface of the water surface of the bottom of the outer tube in the gap, and the air descending from above in the gap is allowed to pass through the slits. In the process, the air is converted into a plurality of thin high-speed jets, the plurality of thin high-speed jets collide with the water surface, thereby generating splashes from the water surface, and air in the vicinity above the water surface. Generating negative ions therein,
Supplying the air containing the negative ions from the vicinity of the bottom of the outer tube into the room through the inner tube;
A geothermal utilization type air conditioning method having a negative ion generation function.

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