JP5459701B2 - Radiation panel for cooling and cooling device - Google Patents

Description

  The present invention relates to a cooling radiation panel and a cooling device.

Due to the recent global warming, many efforts for energy saving and CO ₂ reduction are being carried out. According to the sectoral survey of thermal effect gas emissions in Tokyo, the household sector accounts for 25% of the total, so measures at each household level are urgently needed. Since an air conditioner occupies most of the power consumption at home, there is an urgent need to develop a new air conditioner with excellent cooling efficiency that can replace the air conditioner.

  From such a viewpoint, in recent years, a novel cooling device (member) that is a cooling radiation panel has been developed. Such a cooling device is provided with, for example, a refrigerant flow path on the back surface of a heat equalizing plate such as an aluminum substrate, and by flowing the refrigerant in the refrigerant flow path, the cooling heat caused by the refrigerant is removed from the main surface of the heat equalizing plate. The ambient atmosphere of the cooling device is cooled (for example, Patent Document 1).

  In Patent Document 1, a moisture absorbing / releasing material layer is formed on the main surface of the soaking plate so as to prevent the occurrence of dew condensation that is generated at the initial stage when the coolant is flowed through the coolant channel. I have to.

  However, in the cooling device described in Patent Document 1, that is, the panel for cooling, the region in the vicinity of the panel can be cooled, but the cooling efficiency is reduced when the distance from the panel is several tens of centimeters, and the effect is exhibited. Can not do it. Therefore, it does not have sufficient characteristics to replace the air conditioner described above.

Japanese Patent Laid-Open No. 10-13212

  An object of the present invention is to provide a cooling radiant panel that can cool a wide space and has sufficient cooling efficiency to replace a conventional air conditioner, and a cooling device using the cooling radiant panel. And

In order to achieve the above object, the present invention provides:
A plate-shaped member;
A far-infrared emitting member formed on at least one main surface of the member or embedded in the member;
The present invention relates to a radiant panel for cooling.

The present invention also provides:
The cooling radiation panel;
Contains a coolant, and a case member that is open on one side,
The cooling radiation panel relates to a cooling device, wherein the cooling radiation panel is disposed so as to close the released one surface of the case member.

  According to the cooling radiation panel of the present invention, the far-infrared radiation member is formed on the main surface of the plate-like member, or the far-infrared radiation member is applied or embedded in the plate-like member. Therefore, even when a refrigerant flow path is formed on the back side or inside of the cooling radiation panel, and the refrigerant flows through the refrigerant flow path, the cold heat of the refrigerant is generated by the far infrared rays emitted by the far infrared radiation member. Since it is transmitted far away, the cooling by the refrigerant reaches not only the vicinity of the cooling radiation panel but also the space separated from the cooling radiation panel.

  As a result, the far-infrared radiation effect of the far-infrared radiation member can be obtained by installing the cooling radiation panel on, for example, a wall and / or ceiling of a house and allowing the refrigerant to flow through the refrigerant flow path provided on the rear surface. As a result, the cooling heat of the refrigerant is transmitted to the house, so that the house can be sufficiently cooled, that is, cooled.

  In general, thermal radiation is transmitted by far infrared rays, but this thermal effect is that when the far infrared rays are irradiated to a predetermined substance, the far infrared rays and the molecules in the substance resonate. Is to cause the movement of the molecule. Thermal radiation and heat absorption are closely related, and an object that easily radiates heat is as easily absorbed as it is (Kirchhoff's law). Accordingly, the emissivity and the absorptance, which are the ratio of thermal radiation and heat absorption, have a relationship of emissivity = absorption rate. Since the heat absorption at the time of cooling in the cooling radiation panel of the present invention becomes extremely large, a warm object is cooled more effectively and quickly.

  That is, the present invention pays attention to the above-mentioned characteristics of far-infrared rays, and finds that it is possible to cool a wide space by using this characteristic to transmit cold heat to an object faster. It came to think of.

  In the cooling device of the present invention, the cooling material is placed inside the case member, and the open surface of the case member is closed with the cooling radiation panel. Therefore, the cooling heat generated by the cooling material is the cooling radiation panel. The far-infrared radiation member transmits the light far away. Therefore, it becomes possible to provide a cooling device having a simple configuration.

  Moreover, if the case member is set to a size that can be carried, a portable small cooling device can be provided.

  In one aspect of the present invention, the case member has a drawer portion, and the coolant can be freely inserted and removed.

  As described above, according to the present invention, there is provided a cooling radiant panel that can cool a wide space and has sufficient cooling efficiency to replace a conventional air conditioner, and a cooling device using the cooling radiant panel. can do.

It is a schematic block diagram which shows an example of the radiation panel for cooling of this invention. It is a figure which shows the experimental apparatus for verifying the cooling-heat radiation effect by the cooling radiation panel of this embodiment shown in FIG. It is a graph which shows the relationship between the surface temperature of the radiation panel for cooling, and the radiation temperature in the position of 50 cm. It is a figure which shows a measured value in the radiation temperature in the position of 50 cm and 100 cm when the surface temperature of the radiation panel for cooling is 20 degreeC. It is a schematic structure figure showing an example of a cooling device of the present invention. It is a figure which shows the experimental apparatus for verifying the cooling-heat radiation effect by the air conditioner of this embodiment shown in FIG. It is a graph which shows the change of the apparatus internal temperature after the coolant installation in the air conditioning apparatus shown in FIG. It is the average value of the radiation temperature in the position of 50 cm after 60-minute progress from the coolant installation in the air conditioner shown in FIG.

  Details of the present invention and other features and advantages will be described based on embodiments.

(Radiation panel for cooling)
FIG. 1 is a schematic configuration diagram illustrating an example of a cooling radiation panel according to the present invention. As shown in FIG. 1, the cooling radiation panel 10 of the present embodiment includes a plate-like member 11 and a far-infrared radiation member 12 formed on the main surface of the member 11.

  The plate-like member 11 can be composed of any member. For example, as in the conventional case, it can be made of aluminum having excellent thermal conductivity, an alloy thereof, copper, a copper alloy, stainless steel, or the like. Moreover, when using especially for a house, the galvanium material etc. which are often used recently as a house material can also be used.

  In the present embodiment, the far-infrared radiation member 12 is provided on the main surface of the plate-like member 11, but it may be applied or embedded in the member 11. In this case, when using the above-mentioned metal material as the member 11, when forming the member 11 by casting or the like from this metal material, by mixing the far-infrared radiation member 12 into the molten metal, etc. The member 11 formed by applying or embedding the above-described configuration, that is, the far-infrared radiation member 12 can be obtained.

  When the member 11 is made of a porous member such as a non-woven fabric instead of being made of a metal material, the far-infrared radiation member 12 is powdered, and the obtained particles are carried on the opening of the member. Can be obtained by: Furthermore, you may interweave in a nonwoven fabric.

  The far-infrared radiating member 12 is not particularly limited as long as it can radiate far-infrared rays. For example, the far-infrared radiating member 12 is a natural mineral having a high emissivity such as nephrite, and an asbestos component that has recently been noisy. What does not contain at all is preferable.

  The size (width and length) of the cooling radiating panel 10 can be formed in an arbitrary size according to the purpose of use. For example, when used in a portable air conditioner described below, the size can be several centimeters to several tens of centimeters. When used in place of an air conditioner installed indoors, the radiation for cooling is used. Since the panel 10 is embedded in the wall or ceiling of the house, the order is several meters, for example. On the other hand, the thickness is determined in consideration of the material of the member 11 and the far-infrared radiation member 12 so as to have a strength that does not break even when used for a long time.

  On the other hand, the size (width and thickness) of the far-infrared radiation member 12 is set in accordance with the size of the cooling radiation panel 10 described above. Of the far-infrared radiation materials exemplified as the far-infrared radiation member 12, germanium and titanium are expensive, and even if they are generally several centimeters in size, they are quite expensive. On the other hand, nephrite is a natural mineral and has a comparatively abundant reserve, so that it is relatively inexpensive even when the far-infrared radiation member 12 is enlarged. Therefore, it is preferable to use a natural mineral having a high emissivity such as nephrite as the far-infrared radiation member 12.

  In addition, when using germanium or titanium, these are often used in a powder form and embedded in the member 11.

  Moreover, the thickness of the far-infrared radiation member 12 can be set to 0.1 cm or more, for example, when it is formed on the main surface of the plate-like member 11 as shown in FIG. Moreover, in the case where it is carried on a nonwoven fabric or the like, the thickness of the nonwoven fabric is set to the above-described thickness.

  As shown in FIG. 1, for example, a pipe 15 made of vinyl chloride is embedded in the member 11, and a refrigerant is circulated by a pump 16 in the pipe 15. At this time, the cold caused by the refrigerant is radiated earlier to the object via the far-infrared radiation member 12. That is, the far-infrared radiation member 12 is transmitted far away by far-infrared radiation. Therefore, in the cooling radiation panel 10 of the present embodiment shown in FIG. 1, it is possible to effectively cool not only the vicinity thereof but also the target object more quickly.

  FIG. 2 is an experimental apparatus for verifying the cold radiation effect by the cooling radiation panel 10 of the present embodiment shown in FIG. As shown in FIG. 2, this experimental apparatus has a surface temperature sensor 21 disposed on the surface of the cooling radiation panel 10 (far-infrared radiation member 12) shown in FIG. 1, and is further separated from the cooling radiation panel 10 by 50 cm and 100 cm. Radiation thermometers 22 and 23 (INOVA, NM-0036) are arranged at the positions.

  The member 11 of the cooling radiation panel 10 was a galvanium material, the far infrared radiation member 12 was nephrite, and the thickness was 2.0 cm. The size of the cooling radiation panel 10 was 850.0 cm in length (height) and 850.0 cm in width.

  Moreover, the experiment system shown in FIG. 2 was implemented in the constant temperature and constant temperature shield room, and set temperature 30 degreeC and humidity 50%.

  FIG. 3 is a graph showing the relationship between the surface temperature of the cooling radiation panel 10 and the radiation temperature at a position of 50 cm. As shown in FIG. 3, in the cooling radiation panel 10 of the present embodiment, it can be seen that the radiation temperature at the position of 50 cm decreases as the surface temperature decreases. That is, it can be seen that the cooling heat is transmitted to the object faster by the radiation of the far infrared rays from the cooling radiation panel 10.

  On the other hand, in the conventional cooling radiation panel as shown in Patent Document 1, it has been found that the radiation temperature at the position of 50 cm does not change even when the surface temperature is lowered.

  Next, the radiation temperatures at positions of 50 cm and 100 cm when the surface temperature of the cooling radiation panel 10 was 20 ° C. were measured and are shown in FIG. The listed value is an average value when the radiation temperature is measured 20 times.

  As apparent from FIG. 4, in the cooling radiant panel 10 of the present embodiment, the radiant temperature is higher than that of the conventional cooling radiant panel as shown in Patent Document 1 at any position of 50 cm and 100 cm. Decline was confirmed. Therefore, it was confirmed that the cooling radiating panel 10 of the present embodiment can transmit cold heat to a distant place and cool the portion.

(Cooling device)
FIG. 5 is a schematic configuration diagram showing an example of the cooling device of the present invention. As shown in FIG. 5, the cooling device 50 of the present embodiment includes the cooling radiation panel 10 shown in FIG. 1 and a case member 51. In addition, the cooling radiation panel 10 is provided so as to block the open surface of the case member 51. In addition, a drawer 53 is attached to the case member 52, and a cooling material 53 such as a cold insulating material is disposed in the drawer 53 so that it can be freely inserted and removed.

  The cooling radiation panel 10 can be formed according to the above-described embodiment. However, the size can be appropriately set according to the desired size of the cooling device 50.

  The case member 51 including the drawer 53 can be made of any material. For example, the case member 51 can be made of a metal material similar to the member 11 of the cooling radiation panel 10.

  The coolant 53 can be, for example, dry ice or ice.

  In the cooling device 50 according to the present embodiment, the cooling heat caused by the coolant 53 is radiated to the object earlier through the cooling radiation panel 10, specifically, the far-infrared radiation member. In other words, the far-infrared radiating member emits the far-infrared rays more quickly to the object. Therefore, in the cooling radiation panel 50 of the present embodiment shown in FIG. 5, it is possible to effectively cool not only the vicinity thereof but also a relatively far region. As a result, a cooling device having an extremely simple configuration can be provided.

  In this case, if the size of the cooling device 50 is about several centimeters, a portable so-called warmer type cooling device can be provided.

  FIG. 6 is an experimental device for verifying the cooling radiation effect by the cooling device 50 of the present embodiment shown in FIG. As shown in FIG. 6, this experimental apparatus has a temperature sensor 55 arranged on the surface of the cooling device 50 (cooling radiation panel 10) shown in FIG. 5, and is further separated by 50 cm from the cooling radiation panel 10 of the cooling device 50. A radiation thermometer 56 (INOVA, NM-0036) is arranged at the position.

  In addition, the radiation panel 10 for cooling used what mixed the nephrite in the nonwoven fabric, and compared the characteristic with the case where an apparatus as shown in FIG. 5 is comprised, without interweaving nephrite. Nephrite was contained at 20.0% by volume with respect to the nonwoven fabric, and the size of the cooling radiation panel 10 was 5.0 cm in length (height) and 10.0 cm in width. In addition, a cold insulating material was used as the coolant. The experiment was carried out at a temperature of 24.2 ° C.

  FIG. 7 is a graph showing a change in the temperature in the apparatus after the installation of the coolant. As is apparent from the figure, when the cooling device of this embodiment, that is, when the cooling radiation panel 10 is composed of a nonwoven fabric and nephrite, the cooling temperature in the device is rapidly reduced compared to the case of only the nonwoven fabric, and cooling is performed. It turns out that efficiency is high.

  FIG. 8 shows an average value of the radiation temperature at a position of 50 cm after 60 minutes. In addition, this average value is an average of the radiation temperature for 30 seconds (time resolution of measurement: 1 second) from the time when 60 minutes have passed. As apparent from FIG. 8, in the case of only the nonwoven fabric, the ambient temperature is substantially the same as 24.35 ° C., whereas in the cooling device of this embodiment using the cooling radiation panel 10 composed of the nonwoven fabric and nephrite. The radiation temperature was 20.33 ° C., and it was found that there was a temperature difference of about 4.0 ° C. between the two.

  That is, it can be seen that the cooling heat is transmitted far away by the radiation of the far infrared rays from the cooling radiation panel 10.

  While the present invention has been described in detail based on the above specific examples, the present invention is not limited to the above specific examples, and various modifications and changes can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 10 Cooling radiation panel 11 Plate-shaped member 12 Far-infrared radiation member 15 Piping 16 Pump 21 Surface temperature sensor 22, 23 Radiation thermometer 50 Cooling device 51 Case member 52 Drawer 53 Coolant 50 Temperature sensor 56 Radiation thermometer

Claims (3)

A cooling radiation panel having a plate-shaped member and a far-infrared radiation member formed on at least one main surface of the member or embedded in the member;
Contains a coolant, and a case member that is open on one side,
The cooling radiating panel is disposed so as to close the open one surface of the case member,
The cooling device according to claim 1, wherein the case member has a drawer portion, and is configured so that the coolant can be taken in and out freely . The cooling device according to claim 1, wherein a flow path for flowing a refrigerant is formed in the member. The cooling apparatus according to claim 1 or 2 , wherein the far-infrared radiation member is nephrite.

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