JP2767081B2 - cooling tower - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling tower suitable for being installed outdoors such as an open space.

[0002]

2. Description of the Related Art In a case where the summer heat is to be suppressed only in a certain place in an open space or the like, generally, only a shade of plants or the like is created. This is compared to indoors,
This is because the space is open outdoors, and there is a limit in the capacity of an electric cooler or the like. Therefore,
As a means for suppressing such outdoor heat, a cooling tower for blowing cool air to a certain place is known.

[0003] This cooling tower is used in a desert area or the like, and has a tower standing from the ground side, and a space is provided vertically inside the tower. An external air inlet is provided at the upper part of the tower body, a water evaporating member is attached to the external air inlet, and water is supplied to the water evaporating member. Then, when the outside air is cooled when passing through the water evaporating member, it reaches the space from the outside air introduction port, and the cooled cool air having a higher specific gravity flows to the lower part of the space by its own weight, and flows out from the outlet at the lower part of the tower body. Cold air is blown out.

[0004]

However, in the conventional cooling tower, since the flow of air is created inside the tower body by the weight of the cold air, the cooling tower is used except when the outside air temperature is very high and the air is dry. However, it cannot be expected that a flow of cold air will be generated inside the tower. Specifically, in a place such as a desert, the outside air temperature is 40 ° C. or more and the humidity is 20 ° C.
%, So that if a tower with a height of about 15 m is installed, cold air cooled by 10 ° C. or more will
Although it can be obtained at a flow velocity of about 0.5 m / s, in the case of summer in Japan, the maximum outside air temperature is 35 ° C. and the humidity is 50 to 70.
%, The cooling air cannot be effectively obtained even if a tower having a height of about 15 m is installed. The present invention has been devised in view of the above circumstances, and an object of the present invention is to reliably generate a flow of cool air inside a tower without being affected by the temperature, humidity, and the like of the outside air. It is to provide a cooling tower that can be used.

[0005]

In order to achieve the above object, the present invention provides a tower body extending upward, a space vertically provided inside the tower body, and a tower body provided above the tower body. An outside air introduction port communicating the outside of the tower body with the space portion, a water evaporating member provided at the outside air introduction port to allow the outside air to flow into the tower body, and water for supplying water to the water evaporating member. In a cooling tower provided with a supply means and a cool air blowout port provided at a lower portion of the tower body and communicating the space and the outside of the tower body, a windmill rotated by wind power is provided at an upper part of the tower body, A fan connected to the windmill and generating a flow of air from the upper part to the lower part of the space by rotating by the rotation of the windmill is provided. Further, the invention is characterized in that the fan is provided above the space. Further, the present invention is characterized in that the tower body is configured to include a heat insulating material.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a cross-sectional front view of a cooling tower according to an embodiment.
Reference numeral 1 denotes a cooling tower, and the cooling tower 1 includes a tower body 3 erected from the ground. The tower body 3 is formed in a hollow shape by a heat insulating material, and a space portion 5 extending vertically is provided inside. An outside air inlet 7 is provided at the upper part of the tower 3 for communicating the outside of the tower 3 with the space 5, and the lower part of the tower 3 communicates the space 5 with the outside of the tower 3. A cool air outlet 9 is provided.

As shown in the enlarged view of FIG. 2, a water evaporating member 11 is attached to the outside air inlet 7, and a water tank 13 is attached to the lower end of the outside air inlet 7 on the side of the space 5. Have been. The water evaporating member 11 allows the flow of air,
When water is supplied to the upper part, it is formed in a structure that can efficiently evaporate to the lower part. In this embodiment, it is formed using a number of vertically long slits. The supply of water to the upper part of the water evaporating member 11 is performed by a pump 15 installed in a water tank 13 through a pipe 17, and the water is circulated while being replenished by a pipe 19 (see FIG. 1) by evaporation. In FIG. 2, reference numeral 21 denotes a strip for preventing water from flowing to the opposite side of the water tank 13.

Further, a windmill 23 that rotates by wind power is provided on the upper side of the tower 3, and a fan 25 is provided above the space 5. The windmill 23 includes a blade body 27 that receives wind and a rotation shaft 29.
As shown in FIG. 3, 9 is rotatably supported by a bearing portion 31 of the tower body 3, and a bevel gear 33 is attached to a tip of a rotating shaft 29. The fan 25 is for flowing the air in the space 5 from above to below. The fan 25 includes a blade 35 and a rotating shaft 37. The upper portion of the rotating shaft 37 is rotatable by the bearing 39 of the tower 3. , And a bevel gear 41 that meshes with the bevel gear 33 is attached to the upper end of the rotating shaft 37.

In this embodiment, the bevel gears 33 and 41 rotate when the windmill 23 rotates by the wind.
, The fan 25 rotates, and an air flow flowing downward from above is created in the space 5. Therefore, the outside air inlet 7
The cold air that has passed through the water evaporating member 11 and has been cooled by the latent heat of evaporation required when evaporating water reaches the lower portion of the space 5 by the air flow from the fan 25, and the cool air outlet 9.
From the tower 3.

According to this embodiment, when the outside air temperature is 35 ° C.,
Even if the humidity is about 50 to 70%, if the tower 3 having a height of about 15 m is installed, cool air cooled about 5 to 7 ° C. can be obtained at a flow rate of 0.5 to 1.5 m / s. Was.

Next, experimental results will be described. Conditions: outside air temperature 35 ° C, humidity 60%, wind speed 0.5 to 1.0m / s, circulating water temperature 28 ° C, tower 3 height 15m, blade 27 length 5m, tower 3 diameter 3m. Then, an experiment was conducted on the cooling tower 1 according to the present embodiment and a conventional cooling tower without the windmill 23 and the fan 25. As a result, in a conventional cooling tower,
While cooling air at 33 ° C. was obtained only at a flow rate of 0.2 to 0.3 m / s, in the cooling tower 1 according to the present embodiment,
29 ° C. cold air was obtained at a flow rate of 0.8-1.2 m / s.

The location and orientation of the fan 25 are arbitrary, regardless of whether the inside or outside of the tower 3 is in effect, as long as the fan 25 can generate a flow of air from above to below in the space 5. . Further, the structure of the water evaporating member 11 is not limited to the structure of the embodiment, and various structures can be used.

[0013]

As is apparent from the above description, according to the present invention, natural energy is used to forcibly create a flow in which air flows downward from above in the tower. A cooling tower that can reliably generate a flow of cool air inside the tower without being affected by the temperature or humidity of the outside air can be obtained, and can be effectively used in open spaces around squares, parks, and high-rise buildings. can do.

[Brief description of the drawings]

FIG. 1 is a cross-sectional front view of a cooling tower according to an embodiment.

FIG. 2 is a sectional view of a water evaporation member.

FIG. 3 is a diagram showing a connection structure between a windmill and a fan.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cooling tower 3 Tower 5 Space part 7 Outside air inlet 9 Cold air outlet 11 Water evaporation member 15 Pump 23 Windmill 25 Fan

Claims (3)

(57) [Claims] 1. A tower body extending upward, a space section provided vertically above and below the tower body, and outside air introduction provided above the tower body and communicating between the outside of the tower body and the space section. An opening, a water evaporating member provided at the outside air introduction port to allow the outside air to flow into the tower body, a water supply means for supplying water to the water evaporating member, and the space provided below the tower body In the cooling tower provided with a portion and a cool air outlet communicating with the outside of the tower body, a windmill that is rotated by wind power is provided at an upper part of the tower body, is connected to the windmill, and rotates by the rotation of the windmill to rotate the windmill. A cooling tower, comprising: a fan for generating a flow of air from an upper portion to a lower portion of a space. 2. The cooling tower according to claim 1, wherein the fan is provided above the space. 3. The cooling tower according to claim 1, wherein the tower body includes a heat insulating material.