JP7271815B2 - Evaporative cooling device - Google Patents

Description

Patent Act Article 30, Paragraph 2 Application Public Experiment (Date: August 22nd to 25th, 2019, Location: Itabashi Ward Ecopolis Center Underground Courtyard Eco Circle (4-6-1 Maenocho, Itabashi-ku, Tokyo))

TECHNICAL FIELD The present invention relates to a transpiration-type cooling device capable of obtaining the effect of uniformly lowering the temperature at the place where it is installed.

2. Description of the Related Art In recent years, when controlling the temperature inside a building, not only using a cooling device but also suppressing the temperature rise of the building itself has been attracting attention from the viewpoint of energy saving.
For this reason, greening of rooftops and greening of walls has attracted attention, and in particular, with respect to greening of walls, so-called green curtains have been attracting attention to reduce the temperature rise of walls. This green curtain makes it possible to prevent the building from being directly exposed to the sun and to lower the temperature around the building through the transpiration of the plants by placing the plants directly or indirectly on the wall surface.
From this point of view, various technologies related to green curtains have been proposed. For example, Patent Literature 1 proposes a green curtain that can be easily moved as needed and that can be easily watered. Specifically, the green curtain according to this proposal includes a pipe member that supports the planter so that it can move in a substantially horizontal direction, and the supported planter is sprayed with water through the pipe member. ing. A rope (climbing guide member) for climbing the vines planted in the planter extends upward from each planter, and the upper end of the rope is slidably supported by rail members and runners. It is
Although various proposals have been made to form a green curtain on a wall surface in this way, there is a problem that it is difficult to manage to actually grow plants on the wall surface, and the plants wither and the desired effect cannot be obtained. be.
Therefore, it has been proposed to obtain the same effect as the green curtain by sprinkling water on the wall surface and allowing the water to evaporate. In this case, if the water is directly sprinkled on the wall surface, the wall surface may be adversely affected during transpiration.
For example, Patent Literature 2 discloses a water spray curtain forming device that prevents the sprayed water from scattering over a wide area, and cools the wind sent into the building by spraying water so that it can be introduced as a cool breeze. Proposed. Specifically, such a sprinkler curtain forming device is arranged in the outer peripheral part of the building, and is formed by guiding the supplied water to flow down along the vertical plane facing the direction of wind introduction. A watering curtain forming device for cooling the wind introduced into a building by the transpiration action of water by passing it through the watering curtain, and then sending the wind into the interior of the building. A watering louver consisting of a plurality of rod-shaped members extending horizontally along the vertical direction at intervals along the watering louver, and a watering louver arranged directly above the watering louver and at the upper end of the uppermost rod-shaped member and a water sprinkling member having a plurality of water sprinkling holes for supplying water.

Japanese Patent Application Laid-Open No. 2011-050340 JP 2009-155874 A

However, the proposal in the above-mentioned Patent Document 2 has the problem that water cannot transpire uniformly around the wall, and the effect of lowering the outside temperature of the building is poor, and the water supply is uneven. There is a problem that can easily occur.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a transpiration-type cooling device capable of obtaining the effect of uniformly lowering the temperature at the place where it is installed.

As a result of intensive studies to solve the above problems, the present inventors have found that by combining a sheet-like member with water retention as a member for watering, a small amount of water is continuously dripped and sprinkled evenly over the entire water retention part. The inventors have found that it is possible to provide a transpiration-type cooling device that can uniformly reduce the temperature of the surrounding outside air by the heat of vaporization, and have completed the present invention.
That is, the present invention provides the following inventions.
1. a water sprinkling unit comprising a longitudinal tubular body provided with a plurality of water sprinkling holes provided at predetermined intervals, and a water holding and sprinkling unit directly attached to the tubular body;
A sheet-shaped water retaining part having a water retaining part provided so that an upper end thereof is located at a position to receive water dripping from a lower end of the water retaining and sprinkling part, and the water retaining part has a water retaining function over the entire surface. and a water transpiration type cooling device having a water transpiration function.
2. The water retaining and sprinkling part has a tape-like shape, and has a cylindrical upper end that covers the tubular body and a lower end that is positioned downward when installed. 2. The transpiration cooling device of claim 1, wherein the transpiration cooling device is formed
3. a closed water storage tank having water volume confirmation means and having a water inlet and a water outlet;
a pump for transferring water to the reservoir;
a control unit that checks the amount of water and sends an operation signal to the pump;
2. The transpiration chiller according to claim 1, comprising a water supply system having a flow regulator having a water pressure reducing valve connected to the water outlet.

The water evaporation type cooling device of the present invention can obtain the effect of uniformly lowering the temperature at the place where it is installed.
Furthermore, the transpiration-type cooling device of the present invention having a water supply system can supply water to the water holding part at a desired supply amount and supply time, so that the water holding part always has water and transpiration continues. It can be run for a long time, and the cooling effect due to higher transpiration can be obtained continuously.

FIG. 1 is a schematic diagram showing the overall configuration of the water evaporation type cooling device of the present invention. FIG. 2 is an enlarged perspective view of the water retaining portion shown in FIG. FIG. 3 is a perspective view showing only the sprinkler portion shown in FIG. 2. FIG. 4 is a side view of the water storage tank shown in FIG. 1. FIG.

1 Water evaporation type cooling device: 10 Sprinkler: 20 Water retention: 32 Water amount confirmation means: 34 Water inlet: 36 Water outlet: 30 Water storage tank: 40 Pump: 50 Control unit: 62 Water pressure reducing valve: 60 Flow rate adjustment unit

The present invention will now be described in more detail.
The transpiration-type cooling device 1 of the present embodiment shown in FIG. a water sprinkling unit 10 comprising a water holding and sprinkling unit 22;
A sheet-like water retaining part 20, which is provided so that the upper end (the part where the upper end 24a exists) is located at a position where water dripping from the lower end of the water retaining and sprinkling part 22 can be received. The water-retaining part has a water-retaining function over its entire surface and a water-transpiration cooling device.
It has a water sprinkling portion 10 with a long axis (see FIGS. 2 and 3) and a sheet-like water retaining portion 20 provided over the entire length of the water sprinkling portion 10, and the water retaining portion 20 has a water retention function and a ventilation function on the entire surface. It has the function of transpiration of water. In addition, the transpiration-type cooling device 1 of the present embodiment has a water quantity confirmation means 32, a closed water storage tank 30 having a water inlet 34 and a water outlet 36, and a water transfer to the water storage tank 30. It comprises a water supply system 2 having a pump 40 , a controller 50 for checking the amount of water and sending an activation signal to the pump, and a flow regulator 60 having a water pressure reducing valve 62 connected to the water outlet 36 .
Further details will be described below.

[Sprinkling part]
As shown in FIGS. 2 and 3, the water spraying section 10 is fixed to an installation frame 14 and has a tubular body 10a provided with a plurality of water spraying holes 12 provided at predetermined intervals. The size and spacing of the watering holes 12 are arbitrary, and can be appropriately set according to the size of the water retaining sheet and the like.
Materials for forming the sprinkler unit 10 and the installation frame 14 are not particularly limited, and plastics and metals can be used.
The water retaining and sprinkling part 22 has a cylindrical upper end 22a for inserting the water retaining and sprinkling part 10 to attach the water retaining and sprinkling part 22 to the water sprinkling part 10, and a lower end positioned downward when installed. shape) is continuously formed. By forming the lower end in a mountain shape, water is uniformly dripped and sprinkled from the triangular vertex. While the water retaining sheet 20 has a rectangular shape, the water retaining and sprinkling portion 22 has a length between the upper end and the lower end with respect to the longitudinal length of the water retaining and sprinkling portion 22 along the length direction of the water sprinkling portion 1. It has a so-called tape-like shape in which the length of the tape is short. By covering the tubular body 10a with a sheet having a water retaining function forming the water retaining and sprinkling part 22 in this way, water does not scatter from the tubular body 10a even if the amount of sprinkling is increased, and water to be sprinkled is effectively retained. 20 can be supplied.
Moreover, it is preferable that the length of the water-retaining sprinkling portion 22 is slightly shorter than the width of the water-retaining sheet 24 . As a result, water can be supplied to the water retaining sheet 24 from the water retaining water sprinkling part 22 without waste.

[Water retaining part]
The water retention part 20 is composed of a water retention sheet 24 provided under a water retention water sprinkling part 22 directly attached to the water sprinkling part 10, as shown in FIGS. The water retaining sheet 24 has cylindrical bag portions at its upper end 24a and lower end 24b. It is fixed to the installation frame 14 . In addition, by inserting the rod member 14b into the bag body at the lower end 24b, the water retaining sheet 24 can be installed in a stretched state and the water retaining sheet 24 can be positioned above the installation frame 14. - 特許庁
The materials used for the water retaining and sprinkling part 22 and the water retaining sheet 24 may be the same or different for both, and may be woven fabric or nonwoven fabric as long as they can retain water and transpire. can be used without In addition, in this embodiment, a sheet having no particular holes is exemplified, but a plurality of holes may be appropriately provided, and a water transpiration sheet or the like described in JP-A-2016-166720 can also be used.

[Water supply system]
As shown in FIG. 1, in the water supply system 2, the water storage tank 30, the pump 40, and the flow rate adjusting section 60 are connected via pipes 2a, 2b, 2c, and 2d, respectively, capable of transferring water. The pump is also connected via piping to an open water tank (not shown). The flow rate adjusting section 60 is connected to the sprinkler section 10 via a pipe.
Further, the water amount confirmation means 32 of the water storage tank 30 and the control section 50, and the pump 40 and the control section 50 are connected via wirings 2e and 2f, respectively.
Each member will be described below.

(Water storage tank)
As shown in FIG. 4, the water storage tank 30 is made of a pressure-resistant container, and is provided with a water inlet 34 on the upper side and a water outlet 36 on the lower side. A water amount confirmation means 32 is provided, and when the internal water amount falls below a preset lower limit or exceeds a preset upper limit, a signal is sent to the control unit 50 to notify the respective contents. It is designed to be The water amount confirmation means 32 can be formed by using known confirmation means such as a sensor without particular limitation.
Both the water inlet 34 and the water outlet 36 are connected to pipes, but valves may be provided at the connecting portions (not shown). By providing the valve, water can be supplied and discharged without lowering the internal pressure of the water storage tank.
Since the water storage tank 30 is formed in this manner, the inside of the tank can be kept in a pressurized state, and the pressure inside the tank can be used to supply water to the sprinkler section 10 . In other words, the water supply system of the present invention is configured to be able to supply water by the internal pressure (atmospheric pressure) of the water storage tank. The operating time of the pump can be reduced, and a small pump can be used.

(control part)
The control unit 50 has a central processing unit, a storage unit for storing data, and a memory unit for temporarily storing processed data, like a normal computer, and further receives a signal from the water volume confirmation means 32. It also has a communication unit (not shown) for transmitting start and stop signals to the pump. Further, temperature sensors (not shown) for measuring the outside air temperature and the temperature of the surface side of the water holding part 20 are installed respectively, and these temperature sensors and the control part 50 are connected, and the temperature of the surface side of the water holding part 20 is measured outside. It is also possible to stop the supply of water when the temperature is 1 to 2°C lower than the air temperature, and to supply water when there is no difference of 1 to 2°C. By setting in this way, it is possible to avoid wasteful supply of water and perform cooling efficiently.
The control unit 50 can also be electrically connected to a shut-off valve (not shown) provided in the water supply unit having the water inlet 34 to open and close the shut-off valve.

(Flow control unit)
The flow rate adjusting section 60 has a water pressure reducing valve 62 and a water amount adjusting valve (not shown). When the pressure of the water transferred from the water storage tank 30 to the water pressure reducing valve 62 exceeds a preset pressure, the water is transferred to the sprinkler section 10 after reducing the pressure. As a result, water can be supplied to the water sprinkling portion at an appropriate pressure, and water more than necessary is supplied to the water holding portion 20, or water exceeding the allowable amount of the water sprinkling portion 10 is not supplied.
〔others〕
In the transpiration-type cooling device of the present invention, the power source can be combined with a power generation device using natural energy such as a solar panel, and energy can be saved.

[Manufacturing]
The water evaporation type cooling device 1 of the present embodiment can be produced by manufacturing and assembling each member by a known method as appropriate.

〔use〕
The transpiration-type cooling device 1 of this embodiment is completed by connecting each member in the state shown in FIG. Install outside the window. Then, the controller 50 is operated to transfer water from the pump 40 to the water storage tank 30 until the controller 50 issues a stop instruction. Since the water storage tank is sealed, the water is supplied from the pump to increase the internal pressure, and the water is discharged from the water discharge portion 36 . Then, water is supplied to the sprinkling portion at an appropriate flow rate through the flow rate adjusting portion 60, and the water is stored in the water retaining portion 20, and the water can evaporate.
The water evaporation type cooling device 1 of the present embodiment configured as described above is capable of efficiently cooling the entire surface of the sheet constituting the water retaining portion 20, and furthermore, the water supply system described above can be used. Thus, water can be supplied to the water holding part at a desired supply amount and for a desired supply time. Also, by connecting a temperature sensor to the control unit, it is possible to continuously and moderately perform transpiration, and to continuously obtain a higher cooling effect due to transpiration.

The present invention is by no means limited to the above-described embodiments, and can be modified in various ways without departing from the gist of the present invention.
For example, if a drain gutter is attached to the water holding part 24 and surplus water is drained into the open water tank, a water circulation system using a small pump can be formed. In this case, the rod member 14b can be a hollow member having a slit along the axial direction, and the lower end of the water retaining sheet 24 can be inserted into the slit to collect water via the rod member 14b. It can also be combined with an energy-saving device in combination with a solar panel and a storage battery.
Further, when the water supply is used as the water supply source, the flow rate adjusting unit 60 can be attached to the sprinkler unit 10, the water purifier can be attached, and the water pipe can be attached to the pipe 2b. By draining the surplus water to the veranda, etc., the cooling effect due to the heat of vaporization can be obtained.
When well water is used as a supply source, depending on the performance of the well pump, it is possible to use a system similar to water supply. can be installed.

Claims (2)

a water sprinkling unit comprising a longitudinal tubular body provided with a plurality of water sprinkling holes provided at predetermined intervals, and a water holding and sprinkling unit directly attached to the tubular body;
a sheet-shaped water retaining part, the water retaining part being provided so that the upper end is located at a position where water dripping from the lower end of the water retaining and sprinkling part can be received;
The water retention part has a water retention function on the entire surface and a water transpiration function,
The water retaining and sprinkling part is made of a sheet having a water retaining function and has a tape-like shape. A chevron-shaped protrusion is continuously formed on the lower end over the entire length of the lower end.
Evaporative cooling system. a closed water storage tank having water volume confirmation means and having a water inlet and a water outlet;
a pump for transferring water to the reservoir;
a control unit that checks the amount of water and sends an operation signal to the pump;
2. A water transpiration chiller according to claim 1, comprising a water supply system having a flow regulator having a water pressure reducing valve connected to the water outlet.

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