JPH09145080A - Radiation cooler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a radiation cooler which can obtain dew condensation preventing effect sufficiently. SOLUTION: Chilled air to be supplied into an air tunnel of a radiation panel 7 is blown down through an opening part of a surface material of the radiation panel and the blown down air flows near the surface of the surface material of the radiation panel. The flow of the blow down air prevents dew concentration on the surface of the surface material of the radiation panel. In a radiation cooler thus arranged, a straightening body 71 is arranged in the air tunnel so that the blown down air is distributed almost evenly over the entire surface of the surface material.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a radiant panel of a radiant cooling device for cooling a conditioned room by utilizing radiant heat of a radiant panel.

[0002]

2. Description of the Related Art In general, there is known a radiant cooling device in which a plurality of radiation panels are installed on a ceiling or the like, cool air is caused to flow in the cavities of the radiation panels, and a conditioned room is cooled by radiant heat from the radiation panels. Has been. In this type, if the temperature of the radiant panel is too low, the room air that contacts the surface of the radiant panel is cooled, and if this air becomes lower than the dew point temperature, dew drops on the surface of the radiant panel and this dew drops. There is a risk of getting the floor or carpet wet. In order to eliminate this, cold air is made to flow in the cavity of the radiation panel, and this cold air is blown out through the through holes of the surface material of the radiation panel,
A radiant cooling device has been proposed in which the blowing air is caused to flow along the surface of the surface material of the radiant panel to inject cold air into the surface of the surface material to prevent dew condensation on the surface of the surface material of the radiant panel. There is.

[0003]

However, in the above-mentioned radiant cooling apparatus that has been proposed, there is no means for uniformly blowing the blowout air over the entire surface of the surface material, and in the portion near the supply side of the cool airflow. The amount of cold air blown out increases,
On the contrary, there is a problem that the amount of cold air blown out is small in the part far from the supply side, and this makes it impossible to prevent dew condensation from occurring in the part where the amount of cool air blowout is small (the part far from the supply side).

SUMMARY OF THE INVENTION An object of the present invention is to provide a radiant cooling device which solves the above-mentioned problems of the conventional technique and can sufficiently obtain the dew condensation preventing effect.

[0005]

According to the first aspect of the present invention,
The cool air supplied into the cavity of the radiant panel is blown out through the opening of the surface material of the radiant panel, and this blown air is caused to flow near the surface of the surface material of the radiant panel. In the radiant cooling apparatus for preventing dew condensation on the surface, a rectifying body is arranged in the cavity so that the blown air is distributed almost uniformly over the entire surface of the surface material.

According to a second aspect of the present invention, the cool air supplied into the cavity of the radiant panel is blown out through the opening of the surface material of the radiant panel, the blown air is caused to flow near the surface of the surface material of the radiant panel, and this air is blown out. In the radiant cooling device that prevents dew condensation on the surface of the radiant panel surface material by the flow of wind,
A void structure, such as a porous body or a fibrous body, is arranged in the cavity so that the blown air is distributed almost uniformly over the entire surface of the surface material.

According to the third aspect of the invention, the cold air supplied into the cavity of the radiant panel is blown out through the opening of the surface material of the radiant panel, the blown air is caused to flow near the surface of the surface material of the radiant panel, and this air is blown out. In the radiant cooling device that prevents dew condensation on the surface of the radiant panel surface material by the flow of wind,
A baffle plate is provided in the cavity so that the blown air is distributed almost uniformly over the entire surface of the surface material.

According to a fourth aspect of the present invention, the cool air supplied into the cavity of the radiant panel is blown out through the opening of the surface material of the radiant panel, the blown air is caused to flow near the surface of the surface material of the radiant panel, and this air is blown out. In the radiant cooling device that prevents dew condensation on the surface of the radiant panel surface material by the flow of wind,
It is characterized in that a honeycomb structure is arranged in the cavity so that the blown air is almost uniformly distributed over the entire surface of the surface material.

According to a fifth aspect of the present invention, the cold air supplied into the cavity of the radiant panel is blown out through the opening of the surface material of the radiant panel, the blown air is caused to flow near the surface of the surface material of the radiant panel, and this air is blown out. In the radiant cooling device that prevents dew condensation on the surface of the radiant panel surface material by the flow of wind,
A honeycomb structure is arranged in the cavity so that the blown air is distributed almost uniformly over the entire surface of the surface material, and the honeycomb structure is characterized in that the length of the honeycomb cell changes depending on the location. To do.

According to a sixth aspect of the present invention, the cool air supplied into the cavity of the radiation panel is blown out through the opening of the surface material of the radiation panel, the blown air is caused to flow near the surface of the surface material of the radiation panel, and this blowout is performed. In the radiant cooling device that prevents dew condensation on the surface of the radiant panel surface material by the flow of wind,
A honeycomb structure is disposed in the cavity so that the blown air is distributed almost uniformly over the entire surface of the surface material, and the honeycomb structure is characterized in that the size of the honeycomb cells changes depending on the location. To do.

According to these aspects of the invention, since the rectifying body or the like is arranged in the cavity of the radiation panel, the cold air supplied into the cavity is distributed by the rectifying body or the like to prevent the surface material of the radiation panel from being distributed. It is blown out almost uniformly over the entire surface of the surface material through the opening.

The cold air blown from the opening of the surface material through the blowout chamber in the cavity pushes away the indoor air directed to the surface of the surface material of the radiant panel and wraps around to the surface of the surface material,
Condensation on the surface of the surface material is prevented through this series of cold air flow because the air is sucked into the suction chamber in the cavity through the opening of the surface material.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 100 denotes a radiant cooling device. This radiant cooling device 100 includes a cold air generator 10
3, the cool air generator 103 accommodates a cooler and a blower (not shown). This cold air generator 1
The ducts 109 and 111 are connected to 03 through the blowing hose 105 and the suction hose 107, and these ducts 109 and 111 are fixed to the back part of the radiation panel 7.

According to this embodiment, in the cavity of the radiation panel 7, as shown in FIG. 2 and FIG.
And the suction chambers 12 are alternately provided. Then, referring to FIG. 1, blow-out chamber 11 is connected to blow-out duct 109 through hole 113, and suction chamber 12 is connected to suction duct 111 through hole 115. This radiation panel 7
Is installed, for example, on the ceiling.

An evaporator of an air conditioner (not shown) is used as a cooler (not shown) housed in the cold air generator 3, and when this evaporator is used, a dehumidifying function is provided. Be prepared. Assuming that an evaporator of an air conditioner is used as this cooler, cool air is blown to the radiant panel 7 by blowing air from a blower (not shown) housed in the cool air generator 3, so that each radiant panel 7 The conditioned room is cooled by the radiant heat.

The radiation panel 7 is constructed by providing a surface material 15 made of pure aluminum or an aluminum alloy in an opening of a box-shaped main body 13 formed of a member having excellent heat insulating properties. As shown in FIG. 4, the surface material 15 of the radiation panel 7 is provided with a plurality of slits (openings) 31 that are short and discontinuous in one direction of the surface material 15, and the slits 31a are slits 31a. 7 and the slit 31 b is connected to the suction chamber 12.

Note that, with reference to FIG. 5, the opening of the surface material 15 may be a plurality of slits 33 extending in series in one direction thereof.

According to this embodiment, as shown in FIG. 6, the blowing chamber 11 is provided with a rectifying body (baffle plate) 71. This rectifying body 71 has a hole 11 connected to the blowing chamber 11.
3 is placed near the hole 113 to add resistance to the cold air supplied through the hole 113, reduce the amount of cold air flowing near the hole 113, and increase the amount of distant cold air. Further, as shown in FIG. 7, a rectifying body (baffle plate) 7 is provided in the suction chamber 12.
3 is provided. The rectifying body 73 is a plate-shaped structure or a perforated plate-shaped structure, and has a hole 11 connected to the suction chamber 12.
5 is placed in the vicinity of 5 and adds resistance to the cold air sucked through this hole 115. Then, the suction amount on the side of the hole 115 is reduced and the suction amount far from the hole 115 is increased.

According to this embodiment, the amount of cold air blown and sucked in through the slits 31a and 31b of the surface material 15 becomes substantially uniform along one direction of the surface material 15, so that the air blown out is the surface. The material 15 is distributed almost uniformly over the entire surface of the material 15, and the supply and return of cold air can be made substantially uniform.

When this apparatus is used for cooling, the cold air supplied from the cold air generator 103 through the blowing hose 105 to the blowing chamber 11 is blown out through the slit 31a of the surface material 15 connected to the blowing chamber 11. The air is blown out of the chamber 11 and causes an adhering flow due to the Counder effect, and this blown air causes the suction chamber 1 of the surface material 15 of the radiation panel 7
The air is sucked into the suction chamber 12 through the slit 31b connected to 2, and returned to the cold air generator 103 through the suction hose 107.

By this series of blowing air (cold air) flow, the cold air adheres to the surface of the surface material 15 and pushes the room air away from the surface, so that the surface of the surface material 15 is uniformly covered with the cold air. Further, since the slit 31 has a small width,
The amount of cold air blown through the opening is small. Therefore, the action of entraining the air around the outlet of the slit 31 is reduced, so that a vortex is less likely to be generated on the surface of the surface material 15, and the surface of the surface material 15 is uniformly covered with cool air.

When the surface of the surface material 15 is uniformly covered with the cool air, even if the temperature of the cool air in the blowing chamber 11 is lower than the dew point temperature of the room air, the dew condensation on the surface of the surface material 15 is prevented. . Further, the surface of the surface material 15 has a slit 31.
Since it is cooled by the cool air blown out through a and the cool air in the blowout chamber 11, the surface temperature of the surface material 15 becomes extremely close to the cool air temperature, so that effective cooling by radiant heat is realized. Further, a part of the cool air blown out through the slit 31 also descends into the room and diffuses into the room, which contributes to the indoor cooling.

FIG. 8 and FIG. 9 show another embodiment. According to this, in the blowout chamber 11 and the suction chamber 12, the void structures 75 and 77 made of metal, resin, ceramic or the like such as a porous body or a fibrous body are arranged. The void structures 75 and 77 increase the thickness t on the side where the flow path resistance is desired to be added, thereby adding a lot of resistance to the cold air. If air-conditioning filter material is used for the void structures 75 and 77, an air cleaning function can be added.

10 and 11 show another embodiment. According to this, the blowing chamber 11 and the suction chamber 12
Honeycomb structures 79 and 81 are disposed in and. The honeycomb structures 79 and 81 are configured as shown in FIG. 12, the thickness t is substantially uniform, and the honeycomb cells 79a and
81a penetrates straight. According to this embodiment, the amount of cold air blown and sucked through the slits 31a and 31b of the surface material 15 is substantially uniform along one direction of the surface material 15, so that the blown air is the surface of the surface material 15. Almost evenly distributed over the entire area.

13 and 14 show another embodiment. According to this, as in the above-described embodiment, the honeycomb structures 83 and 85 as shown in FIG. 12 are arranged in the blow-out chamber 11 and the suction chamber 12. The honeycomb structures 83 and 85 have a thickness t on the side where the flow path resistance is desired to be added.
To increase the length of the honeycomb cells 79a and 81a, thereby increasing the resistance to the cold air.

15 and 16 show another embodiment. In the blowing chamber 11 and the suction chamber 12, rectifying bodies 87 and 89 having a honeycomb-like structure are arranged. The rectifying bodies 87 and 89 having a honeycomb-like structure are configured as shown in FIG. 17, and are configured by forming a plurality of through holes in a plate material having a thickness t, and the diameter of the honeycomb cells 87a and 89a is the same. , The diameter of the side on which the flow path resistance is desired to be reduced is reduced so that a large amount of resistance is added to the cold air.

In short, according to this embodiment, since the rectifying bodies 71, 73 and the like are arranged in the cavity of the radiation panel 7, the cold air supplied into the cavity is rectified by the rectifying bodies 71, 7.
Since it is distributed through 3 etc., the surface material 1 of the radiation panel
It is blown out substantially uniformly over the entire surface of the surface material 15 through the openings 31 of 5. Also, in this embodiment,
The cold air blown out from the blow-out chamber 11 is sucked into the adjacent suction chamber 12, so that this series of blow-out air (cold air)
This cold air adheres to the surface of the surface material 15 and pushes indoor air away from the surface, so that the surface of the surface material 15 is uniformly covered with the cool air. Therefore, even if the cool air in the blowout chamber 11 is set to a temperature lower than the dew point temperature of the indoor air,
Since the surface temperature of the surface material 15 is extremely close to the cool air temperature, it is possible to prevent dew condensation on the surface of the surface material 15.

18 and 19 show another embodiment. Referring to FIG. 19, the inside of the radiation panel 7 is partitioned as shown by a dotted line. 20 is a sectional view on the front side in FIG. 19, and FIG. 21 is a sectional view on the back side in FIG. As shown in FIG. 18, a blower unit 200 is fixed to the back of the radiation panel 7, and the blower unit 20 is fixed.
The cold air from 0 is supplied into the cavity of the radiant panel 7 through the holes 201, while the air blowing unit 20 is supplied through the holes 203.
Returned to 0.

FIG. 22 shows another embodiment.

According to this, when connecting a plurality of radiation panels 7, they are connected in series via the hose 205.
The plurality of radiation panels 7, 7 are connected to a blower unit (not shown) via hoses 207, 209, and the cool air from the blower unit is supplied through the hose 207 into the cavities of the radiation panels 7, 7. , And is returned to the blower unit (not shown) through the hose 209.

Although the present invention has been described based on the embodiment, the present invention is not limited to this.
For example, the opening 31 of the surface material 15 is not limited to the slit, and may be circular or square, for example. When the opening 31 is a through hole, it is desirable that holes having a diameter of 1 mm or less be provided with a hole interval of approximately 10 mm or less. As a result of the verification test, in practical use, a hole diameter of about 0.5 mm
It is desirable to provide the holes at intervals of about 5 mm. In the above-described embodiment, the blowout chamber 11 and the suction chamber 12 are provided in the radiation panel 7 so that the once blown cold air is sucked into the radiation panel 7 again, but the present invention is not limited to this. The present invention can be applied not only to the conventional ones that merely blow cold air.

[0033]

As described above, according to these inventions, since the rectifying body or the like is arranged in the cavity of the radiation panel, the cold air supplied into the cavity is distributed by the rectifying body or the like. Then, it is blown out substantially uniformly over the entire surface of the surface material through the opening of the surface material of the radiation panel. Then, the cold air blown out from the opening of the surface material through the blowout chamber in the cavity pushes away the indoor air directed to the surface of the surface material of the radiant panel and wraps around the surface of the surface material to open the surface material. Since it is sucked into the suction chamber inside the cavity from this part, dew condensation on the surface of the surface material is prevented through this series of cold air flow.

[0034]

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a radiation cooling device according to the present invention.

FIG. 2 is a perspective view showing an example of a radiation panel.

FIG. 3 is a cross-sectional view of a radiation panel.

FIG. 4 is a perspective view showing an opening of a radiation panel according to another embodiment.

FIG. 5 is a perspective view showing an opening of a radiation panel in another embodiment.

FIG. 6 is a cross-sectional view of a radiation panel according to another embodiment.

FIG. 7 is a cross-sectional view of a radiation panel according to another embodiment.

FIG. 8 is a cross-sectional view of a radiation panel according to another embodiment.

FIG. 9 is a cross-sectional view of a radiation panel according to another embodiment.

FIG. 10 is a cross-sectional view of a radiation panel according to another embodiment.

FIG. 11 is a cross-sectional view of a radiation panel according to another embodiment.

FIG. 12 is a perspective view showing a honeycomb structure.

FIG. 13 is a cross-sectional view of a radiation panel according to another embodiment.

FIG. 14 is a cross-sectional view of a radiation panel according to another embodiment.

FIG. 15 is a cross-sectional view of a radiation panel according to another embodiment.

FIG. 16 is a cross-sectional view of a radiation panel according to another embodiment.

FIG. 17 is a perspective view showing a rectifying body having a honeycomb-like structure.

FIG. 18 is a view corresponding to FIG. 1 in another embodiment.

FIG. 19 is a view corresponding to FIG. 2 in another embodiment.

20 is a cross-sectional view showing the near side in FIG.

21 is a cross-sectional view showing the inner side of FIG.

FIG. 22 is a perspective view showing a state in which radiation panels are connected in series.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Radiant cooling apparatus 7 Radiation panel 11 Blowing chamber 12 Suction chamber 15 Surface material 31, 31a, 31b Slit 71,73 Baffle plate 75,77 Void structure 79,81 Honeycomb structure 79a, 81a Honeycomb cell 83,85 Honeycomb Structure 87,89 Honeycomb-like structure rectifier 103 Cold air generator

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Masayuki, 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor, Kazuhiro Tajima 2-chome, Keihanhondori, Moriguchi-shi, Osaka No. 5 Sanyo Electric Co., Ltd. (72) Inventor Kiyoji Fukushima 2-5-5 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd.

Claims (6)

[Claims] 1. A cold air supplied into a cavity of a radiant panel is blown out through an opening of a surface material of the radiant panel, the blown air is caused to flow near the surface of the surface material of the radiant panel, and the blast is caused by the flow of the blown air. In a radiant cooling device for preventing dew condensation on the surface of a surface material of a panel, a rectifying body is arranged in the cavity so that blown air is distributed almost uniformly over the entire surface of the surface material. Radiant cooling equipment. 2. Cold air supplied into the cavity of the radiant panel is blown out through an opening of the surface material of the radiant panel, the blown air is caused to flow near the surface of the surface material of the radiant panel, and the flow of the blown air causes radiation. In a radiant cooling device that prevents dew condensation on the surface of the surface material of the panel, a void structure such as a porous body or a fibrous body is provided in the cavity so that the blown air is distributed almost uniformly over the entire surface of the surface material. A radiation cooling device characterized by having a body. 3. The cold air supplied into the cavity of the radiant panel is blown out through an opening of the surface material of the radiant panel, the blown air is made to flow near the surface of the surface material of the radiant panel, and the flow of the blasted air causes radiation. In a radiant cooling device for preventing dew condensation on the surface of a surface material of a panel, a baffle plate is arranged in the cavity so that blown air is distributed almost uniformly over the entire surface of the surface material. Radiant cooling equipment. 4. The cold air supplied into the cavity of the radiant panel is blown out through the opening of the surface material of the radiant panel, the blown air is made to flow near the surface of the surface material of the radiant panel, and the flow of the blown air causes radiation. In a radiant cooling apparatus that prevents dew condensation on the surface of the surface material of the panel, a honeycomb structure is arranged in the cavity so that the blown air is distributed almost uniformly over the entire surface of the surface material. Radiant cooling system. 5. The cool air supplied into the cavity of the radiant panel is blown out through the opening of the surface material of the radiant panel, the blown air is made to flow in the vicinity of the surface of the surface material of the radiant panel, and the flow of the blown air causes radiation. In a radiant cooling apparatus for preventing dew condensation on the surface of a surface material of a panel, a honeycomb structure is arranged in the cavity so that blown air is distributed almost uniformly over the entire surface of the surface material. The radiant cooling system is characterized in that the length of the honeycomb cell changes depending on the location. 6. The cool air supplied into the cavity of the radiant panel is blown out through an opening of the surface material of the radiant panel, the blown air is caused to flow near the surface of the surface material of the radiant panel, and the flow of the blown air causes radiation. In a radiant cooling apparatus for preventing dew condensation on the surface of a surface material of a panel, a honeycomb structure is arranged in the cavity so that blown air is distributed almost uniformly over the entire surface of the surface material. The radiant cooling system is characterized in that the size of the honeycomb cells changes depending on the location.