JPH08219489A - Feeding of cold blast,and cold blast device - Google Patents

Abstract

PURPOSE: To provide a cold air supplying method and a cold air apparatus capable of producing a positive flow of cold air, without being influenced by the temperature or humidity of the surrounding atmosphere, and further capable of supplying cold air to a passage. CONSTITUTION: A tower body 5, having an air passage 19 extending in the vertical direction formed therein, is installed vertically at the side part of a passage 1. Water is made to jet out like a shower from the upper part of the air passage 19 to the lower part. An air flow 19 flowing from the upper part to the lower part in the air passage 19 is formed with the shower. Air is sucked from the upper part to the inner part of the air passage 19, and then the air flow 19a is cooled with heat generated by vaporization of water droplets constituting the shower. Then, the air flow 19a flowing in the air passage 19 is made to flow out toward a passage 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for supplying cold air to indoor passages or outdoor passages.

[0002]

2. Description of the Related Art In the current situation, in order to suppress summer heat only in a certain place in a passage such as a boardwalk in an outdoor plaza, generally, only shade is made by plants or the like. This is because, compared with indoors, the space is open outdoors, so that an electric cooler or the like has a limited capacity. Therefore, as a means for suppressing such outdoor heat, a cooling tower that blows cold air to a certain place is known.

This type of cooling tower is used in a desert area or the like, and has a tower body standing from the ground side, and a space portion is provided vertically inside the tower body. An outside air introduction port is provided in the upper part of the tower body, a water evaporation member is attached to the outside air introduction port, and water is supplied to the water evaporation member. Then, when the outside air passes through the water evaporation member, it is cooled and reaches the space portion from the outside air introduction port, and the cooled cool air having a large specific gravity flows to the lower portion of the space portion by its own weight and blows out at the bottom of the tower body. It has a structure in which cold air is blown out from the mouth.

[0004]

However, according to such a cold air supply system, since the air flow is created inside the tower body by the weight of the cool air, the outside air temperature is extremely high and the air does not dry. There was a problem that it was not so much expected to generate a flow of cold air inside the tower except when there was. That is, in places such as deserts, the outside temperature is 4
Since the temperature is 0 ° C or higher and the humidity is around 20%, if a tower with a height of about 15 m is installed, cold air cooled by 10 ° C or higher will reach about 0.3 to 0.5 m / s at the bottom of the tower body. It can be obtained by the flow velocity, but in the case of summer in Japan, the maximum outside air temperature is 35 ° C.
Since the humidity is around 50 to 70%, the flow of cold 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 generate a cool air flow without being affected by the temperature and humidity of the outside air and to supply cold air to a passage. To provide a method for supplying the same and a cold air device.

[0005]

To achieve the above object, the invention according to claim 1 relates to a method for supplying cold air.
At the side of the passage, a tower body in which an air passage extending in the vertical direction is formed is erected inside, and water is jetted downward from the upper part of the air passage in a shower shape, and the air passage is generated by the shower. Forming an air flow flowing from the upper part to the lower part of the inside, sucking air from the upper part of the air passage into the air passage, cooling the air flow by heat due to vaporization of water droplets constituting the shower, and the air It is characterized in that the air flow flowing through the passage is made to flow out toward the passage side.

Further, the invention according to claim 2 relates to a cooling air device, and a tower body which is erected on at least one side portion of the passage and in which an air passage extending vertically is formed. An air intake formed in the upper portion of the tower body, a water jetting means for jetting water in a shower shape downward from the upper portion of the air passage in the air passage, and a shower unit provided in the lower portion of the tower body. It is characterized by comprising a water recovery means for receiving water and an air outlet formed in a side surface portion of the tower body facing the passage. Further, the present invention is characterized in that tower bodies are installed on both sides of the passage. Further, the present invention is characterized in that a roof is provided over the upper part of the tower body on both sides of the passage.

[0007]

The dropping of the shower creates an air flow from the upper side to the lower side in the air passage. Then, the water droplets are vaporized in the air flow, the air flow is cooled by the heat of vaporization, and the cooled air becomes cold air and is supplied to the passage side. Further, the radiant heat in the passage is absorbed by the water falling in the tower body, and the inside of the passage is cooled.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a cross-sectional front view of a cold air device according to a first embodiment provided in a passage. Reference numeral 1 is a passage such as a sidewalk provided outdoors, and passage 1 is provided as a sidewalk connecting the promenade of an outdoor event site and buildings. Three
Is a cold air device, and the cold air device 3 includes a tower body 5 standing vertically, an air intake port 7 formed in an upper portion of the tower body 5, and a water recovery means provided in a lower portion of the tower body 5. 8 and water jetting means 11 and the like.

As shown in the sectional shape and arrangement structure of FIG. 2, the tower body 5 is formed in an elongated rectangular shape along the passage 1, and the tower bodies 5 are arranged at predetermined intervals. A plurality of them are erected from the ground 13 on both sides of 1, and are installed as if they were wall-shaped. The tower body 5 is composed of a pipe 15 extending in the vertical direction, and an air passage 19 having an open upper end is formed inside the pipe 15. A plurality of the air intake ports 7 are formed on the upper peripheral wall of the pipe 15 at intervals in the circumferential direction, and a horizontal roof member 21 for preventing rainwater and dust from entering the air passage 19 is provided at the upper end of the pipe 15. It is attached. As a material forming the pipe 15, synthetic resin, metal or the like is used. A heat insulating member 17 made of wood or concrete is attached to a side surface of the pipe 15 facing the outside of the passage 1, and the heat insulating member 17 blocks radiant heat from the outside of the passage 1.

A water tank 9 is integrally formed inside the lower portion of the pipe 15, and the bottom surface of the water tank 9 is installed on the ground 13. In this embodiment, the water tank 9 serves both as the water recovery means 8 and the water ejection means 11. The water tank 9 may be formed as a separate member from the pipe 15, and the water tank 9 and the pipe 15 may be connected to each other. Alternatively, the water tank 9 may be recessed in the ground 13 on which the tower body 5 is installed and formed of concrete or the like. Good.

The water jetting means 11 jets water in a shower shape and jets water downward from the upper end in the air passage 19, and a plurality of water jetting means 11 are attached to the upper end of the pipe 15 so as to face the air passage 19. Shower nozzle 23, a water tank 9 that stores water to be supplied to the shower nozzle 23, a water supply pipe 25 that connects the shower nozzle 23 and the water tank 9, and a water supply pipe 2
5, the pump 27 and the like are provided. The pumps 27 are respectively installed on the outer side portions of the tower body 5 as shown in FIG.

A plurality of air outlets 31 are provided on the inner surface of the pipe 15 of the tower body 5. The outlet 31 is, for example, as shown in FIG.
The inner surface of the pipe 15 is made up of an umbrella portion 3103 and the like projecting from the upper half of the hole 3101 to prevent shower water from flowing out from the outlet 31. The passage 1
A roof 33 for sun shade, for example, is provided above. The roof 33 is formed in an arch shape, and both end sides thereof are provided over the tower bodies 5 on both sides, and in the embodiment, the roof member 21.
Are supported by the support member 35.

Next, the operation will be described. Pump 27
When water is driven, the water in the water tank 9 is supplied to the shower nozzle 23 through the water supply pipe 25, and the shower nozzle 23 ejects the water in the form of a shower downward from the upper portion in the air passage 19 to generate the shower water. It falls in the air passage 19. Due to the fall of the shower water, the air in the air passage 19 flows downward, and in the air passage 19, together with the shower water, the air flow 1 from the upper portion to the lower portion in the air passage 19
9a is formed, and at the same time, this air flow 19a
The outside air is sucked into the air passage 19 through the air intake 7.

The air in the air stream 19a flowing in the air passage 19 is cooled by the heat of vaporization accompanying the vaporization of the water droplets forming the shower in the air passage 19, and the air stream 19 is cooled.
The air temperature of a is lowered and the air is blown out as cold air 3
It is blown from 1 to passage 1. Further, the water of the shower falling in the air passage 19 is collected in the water tank 9, and the water in the water tank 9 is pumped by the pump 27 through the water supply pipe 25 to the shower nozzle 2
3 and is repeatedly used for cooling the air in the air passage 19.

As described above, according to this embodiment, the air passage 19
Since the air flow 19a is forcibly created by the shower in the inside and the air is cooled by the heat of vaporization of the shower, the flow of the cold air is surely generated without being affected by the temperature and humidity of the outside air, and the outdoor passage 1 Even in this case, the cold air can be blown to the passage 1, and the person walking in the passage 1 can be cooled. Further, since the radiant heat in the passage 1 is absorbed by the side surface of the tower body 5 on which water falls, it is advantageous in cooling the inside of the passage 1.

Next, an experimental example will be described. When the outside air temperature is 35 ° C. and the relative humidity is 50%, the cross section of the air passage 19 is a rectangle of 600 mm × 600 mm, the length of the air passage 19 is 3 m, and the water contained in the water layer 9 is 150 liters.
Four shower nozzles 23 are used, and each shower nozzle 23
When water of 3 liters / min was jetted from each, an air flow of about 1 m / sec was generated in the air passage 19.
9a was generated, and the temperature of the air flow 19a at the air outlet 31 was about 28 ° C. Also,
When an experiment was conducted in the same manner under the conditions of high humidity with an outside air temperature of 30 ° C. and a relative humidity of about 70%, an air flow of 1
9a, the wind speed was 1 m / sec, and the temperature at the air outlet 31 was about 26 ° C. As is clear from this experimental example, the flow of cold air can be reliably generated without being affected by the temperature and humidity of the outside air, and the length of the air passage 19, that is, the height of the tower body 5 It was possible to achieve the above effect without increasing the.

The flow velocity of the air flow 19a can be increased as the shower jet amount is increased.
Further, when water is ejected in a shower shape, the nozzle 2
When the diameter of 3 is reduced, it becomes a mist, but in the present invention, the shower shape also includes a mist. In this case, as the diameter of the nozzle 23 is reduced, the water droplets are also reduced and the flow velocity of the air flow 19a is reduced.

Next, a modification of the first embodiment will be described with reference to FIG. FIG. 4 is a plan view showing an arrangement structure of towers. In the present embodiment, as shown in FIG. 4, the length of the tower body 5 is made long along the longitudinal direction of the passage 1, and one such tower body 5 is installed on each side of the passage 1. It is a thing. According to this embodiment, since the tower body 5 is continuously provided on both sides of the passage 1, there is no gap on both sides of the passage 1,
This is advantageous in cooling the inside of the passage 1.

Next, a second embodiment will be described with reference to FIGS. FIG. 5 is a sectional front view of the cold air apparatus according to the second embodiment, FIG. 6 is a plan view of the same portion, and FIG. 7 is an enlarged sectional view of the cold air apparatus. The cold air device 53 according to the second embodiment,
As in the case of the first embodiment, the cold wind device 5 is provided on both sides of a passageway 51 that connects between a boardwalk and a building of an outdoor event venue.
Reference numeral 3 denotes a tower body 55 which is vertically installed, an air intake port 57 formed in an upper portion of the tower body 55, a water ejection means 59,
It is composed of a water tank 61 and an air outlet 63.

As shown in FIG. 6, the tower body 55 has a rectangular planar shape, and a plurality of such tower bodies 55 are erected from the ground 65 on both sides of the passage 51 at predetermined intervals.
It is installed like a wall. The tower body 55 is composed of a pipe 67 extending in the vertical direction, and a synthetic resin, a metal or the like is used as a material of the pipe 67.
Further, as shown in FIG. 7, a heat insulating member 68 made of wood or concrete is attached to the side surface of the pipe 67 facing the outside of the passage 51, and the heat insulating member 68 blocks radiant heat from the outside of the passage 51. There is. The water tank 61 is integrally formed under the pipe 67, and the bottom surface of the water tank 61 is the ground 65.
It is installed on top.

Inside the pipe 67, a partition plate 69 extending vertically parallel to the side surface 6701 of the pipe 67 is provided at a position near the passage 51, and the lower end 6901 of the partition plate 69 is accommodated in the water tank 61. It is located above the surface of the water to be formed by a predetermined dimension. The interior of the pipe 67 is defined by the partition plate 69 to define an air passage 71 that extends vertically and has an open upper end. Further, a portion of the pipe 67 near the passage 51 is parallel to the air passage 71. A sub air passage 73 extending vertically is formed, and a lower portion of the sub air passage 73 is a space S between the lower end 6901 of the partition plate 69 and the water surface.
Is communicated with the air passage 71, and the upper portion of the sub air passage 73 is closed.

The air intake 57 is formed by the upper end opening of the air passage 71, and a horizontal roof member 75 for preventing rainwater and dust from entering the air passage 71 is attached to the upper end of the pipe 67. There is. The water jetting means 59 jets water in a shower shape and jets the water downward from the upper end in the air passage 71. The pipe 6 faces the air passage 71.
7, a plurality of shower nozzles 77 attached to the upper end of the nozzle 7, and a water tank 61 containing water to be supplied to the shower nozzles 77.
And a water supply pipe 79 that connects the shower nozzle 77 and the water tank 61, and a pump 81 and the like provided in the water supply pipe 79. The pump 81, as shown in FIG. It is installed on the outside. In this embodiment, the water tank 61 serves both as the water recovery means and the water ejection means 59.

A plurality of the air outlets 63 are provided on the side surface 6701 of the pipe 67 facing the passage 51 and above and below the water surface in the water tank 61 at intervals in the vertical and horizontal directions.
7 side surface 6701. Above the passage 51, roofs 83 for shade are provided at both ends over the tower bodies 55 on both sides, and the roof 83 is supported by a roof member 75 via a support member 85.

Next, the operation will be described. Pump 81
Drives the water in the water tank 61 to form a shower and the air passage 7
The first embodiment is performed until the air flow 71a is jetted downward from the upper part of the inside of No. 1 and the air flow 71a is directed downward from the upper part in the air passage 71, and the air flow 71a is cooled by the heat of vaporization associated with the vaporization of water droplets forming the shower Similar to the example. Then, in the second embodiment, the cooled airflow 71a is applied to the partition plate 6
It flows into the sub air passage 73 through the space S between the lower end 6901 of 9 and the water surface, and is blown out as cold air from the air outlet 63 to the passage 51 side.

According to the second embodiment, as in the case of the first embodiment, the flow of cold air is generated without being affected by the temperature and humidity of the outside air, and even if the passage 51 is an outdoor passage 51, The cool air can be surely blown out, and the person walking in the passage 51 can be given coolness. In addition, the lower end is the air passage 71.
Since cold air is blown out from the side of the sub air passage 73 that faces the lower part of the air passage and extends upward, the cold air located at the bottom of the air passage 71 and sufficiently cooled by the heat of vaporization of the shower is separated from water. Can be blown out from a desired height.

In the above embodiment, the case where water is circulated between the shower nozzle 23 and the water tank 9 has been described, but it is of course possible to use water without circulation. Further, in the above-described embodiment, the case where the invention is applied to the outdoor passage 1 is described, but the present invention is not limited to this and can be applied to, for example, the indoor event venue passage 1 and the like, and similar effects can be obtained. Further, if the pipe 15 of the tower body 5 is formed of a transparent member, the shower water falling downward in the air passage 19 can be seen from the passage 1 and the person passing through the passage 1 can be given a refreshing feeling. . Further, in the embodiment, the case where the tower bodies 5 are installed on both sides of the passage 1 has been described, but the tower bodies 5 may be provided on at least one side of the passage 1.

[0027]

As is clear from the above description, according to the present invention, the air flow is forcibly produced by the shower in the air passage, and the air is cooled by the heat of vaporization of the shower. It is possible to reliably generate a flow of cool air without being affected by humidity, etc., and it is possible to reliably supply cool air to the aisle even in the open air, and to give a coolness to people walking in the aisle. . Further, the radiant heat in the passage is absorbed by the side surface of the tower body inside which water falls, which is advantageous in cooling the inside of the passage.

[Brief description of drawings]

FIG. 1 is a cross-sectional front view of a cold air device according to a first embodiment.

FIG. 2 is a plan view showing a sectional shape and an arrangement structure of a tower body.

FIG. 3 is a cross-sectional view of an air outlet.

FIG. 4 is a plan view showing a sectional shape and an arrangement structure of a tower body according to a modified example of the first embodiment.

FIG. 5 is a cross-sectional front view of a cold air device according to a second embodiment.

FIG. 6 is a plan view of a main part of a cold air device according to a second embodiment.

FIG. 7 is an enlarged cross-sectional view of a cold air device according to a second embodiment.

[Explanation of symbols]

 1,51 Passages 3,53 Cold wind device 5,55 Tower 7,57 Air intake 8 Water recovery means 9,61 Water tank 11,59 Water ejection means 19,71 Air passage 19a, 71a Air flow 31,63 Air outlet 33,83 roof

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Satoshi Yajima 4-6-15 Sendagaya, Shibuya-ku, Tokyo Within Fujita Co., Ltd. (72) Inventor Mitsuo Ishiki 4-6-15-1 Sendagaya, Shibuya-ku, Tokyo No. Stock Company Fujita

Claims (4)

[Claims] 1. A tower body in which an air passage extending vertically is formed therein is provided upright on a side portion of the passage, and water is jetted downward from the upper portion of the air passage in a shower shape, While forming an air flow flowing from the upper side to the lower side in the air passage by the shower, sucking air into the air passage from the upper part of the air passage, the air flow is generated by heat accompanying vaporization of water droplets forming the shower. A method for supplying cold air, characterized in that the cooling air flow is made to flow out toward the passage side. 2. A tower body, which is erected on at least one side of the passage and in which an air passage extending in the up-down direction is formed, an air intake port formed in an upper portion of the tower body, Inside the air passage, water jetting means for jetting water downward from the upper part of the air passage, water collecting means provided at the lower part of the tower body for receiving the shower water, and a tower body facing the passage An air blowing port formed at a side surface of the cold air device. 3. The cool air apparatus according to claim 1, wherein towers are installed on both sides of the passage. 4. The cool air system according to claim 3, wherein a roof is provided over the upper part of the tower body on both sides of the passage.