JPS6153616B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an air conditioner that utilizes air convection.

Conventional air conditioners used for cooling use electricity as driving energy to send cold air indoors or use underground cooling energy, but the former increases electricity costs, and the latter requires enormous costs to dig underground holes. In the end, the cost became extremely high.

The present invention has been made in view of these problems, and its purpose is to provide an air conditioner that can perform cooling and ventilation without a power source.

The present invention will be explained below with reference to Examples. FIG. 1 is a sectional view of one embodiment, where A is an air conditioner main body, and the air conditioner main body A is fitted into an opening C made in a wall B of a building. This air conditioner body A is shaped like a flat box, and
A collector 1 for collecting solar heat is provided on the side, and the collector 1 and a back plate 2 facing the indoor Y side are provided.
A ventilation passage 3 having an open upper and lower end is provided between the two. As shown in Fig. 4, the collector 1 has a transparent plate 4 on the front side and a heat collecting plate 5 with good heat conduction on the back side of the transparent plate 4, and collects solar heat during the day. Heat is collected by the plate 5. Further, at night, the heat collecting plate 5 functions as a radiation cooling plate. Ventilation path 3 of heat collecting plate 5
A hygroscopic body 6 is attached to the surface facing the hygroscopic body 6, so that the hygroscopic body 6 can be heated by collecting heat or cooled by radiation cooling. As the hygroscopic body 6, for example, a substance called zeolite, which is a general term for silicic acid exchanger, is used, and in the embodiment, zeolite is used. The hygroscopic body 6 made of zeolite is finely crushed and attached to the heat collecting plate 5 through a wire mesh 7 so as to be in contact with the heat collecting plate 5. To explain the characteristics of zeolite here, zeolite is composed of hydrated tectosilicate minerals of alkali, alkaline earth, and aluminum. Unlike crystal water, it continuously releases water when heated, and condenses when left in the air after dehydration.

Now, gaps are provided between the upper and lower ends of the air conditioner main body A and the opening C, respectively, and these gaps penetrate into the indoor Y and outdoor X, and each of the gaps provided in the air By rotating the dampers 8a and 8b, the upper and lower ends of the ventilation passage 3 can be switched to communicate with the indoor Y side or the outdoor X side.

When there is sunlight during the daytime in summer, the upper damper 8a is rotated so that the upper end of the ventilation passage 3 communicates with the outside of the room, and the lower damper 8b is rotated as shown in FIG. It is used by rotating it so that the lower end of the ventilation path 3 communicates with the indoor Y side. That is, the solar radiation S heats the heat collecting plate 5 of the collector 1,
The moisture contained in the chamber-absorbing body 6 is released into the air. On the other hand, the air in the room Y flows into the ventilation passage 3 through the lower opening, becomes an upward air current, and is discharged to the outside X together with the above-mentioned released moisture, so that the room Y is ventilated.

Next, Figure 2 shows the case at night in summer. That is, in this case, when the solar radiation S disappears, the heat collecting plate 5 of the collector 1 is cooled by radiation cooling, and the hygroscopic body 6 that released moisture during the day begins to absorb moisture in the air with which it comes into contact, and the ventilation path 3 The air from the outdoor X that passes through is dehumidified and flows into the indoor Y. Here, if the temperature outside X is lower than the temperature inside Y, the temperature inside Y will be lowered by the air from outside X flowing in, and a cooling effect can be expected in addition to dehumidification and ventilation.

Also, at night in summer, the lower damper 8b is set in the same way as during the day, as shown in Figure 3.
When the lower end of the ventilation path 3 is opened into the room Y, the following dehumidifying effect can be obtained. That is, in this case, the air in the lower part of the room Y flows into the ventilation path 3 from the upper end or lower end opening, moisture is absorbed by the hygroscopic body 6, and the air is dehumidified. Therefore, the humidity of the air in the room Y is lowered, making humid summer nights more comfortable.

In the above embodiment, natural convection of air is used to perform dehumidification and ventilation, but an electric auxiliary fan 9 is provided in the ventilation path 3 as shown in FIG.
Air may be forcibly drawn into the ventilation path 3, and in this case the air conditioning effect will be improved.

FIG. 6 shows a schematic configuration diagram of another embodiment of the present invention, in which the air conditioner main body A is placed outside the room The upper end of the ventilation path 3 is connected to the indoor Y
The duct 11 is connected to one end of the duct 11 which is communicated with from the upper part of the duct 11. An opening 15 is provided at the top of the tip of the duct 11, and can be opened and closed by a damper 8. When the outdoor X side is open, the damper 8 closes the passage of the duct 11 to the indoor Y side. do. A housing 12 is provided at the upper end of the ventilation path 3, and an electric auxiliary fan 9 is provided within the housing 12. FIG. 7 shows a perspective view of the air conditioner main body A of this embodiment.

When used during the daytime in summer, however, the damper 8 is operated to open the opening 15 and close the passage of the duct 11 to the room Y. That is, in this case, the heat collecting plate 5 of the collector 1 is heated, the moisture absorbed by the hygroscopic body 6 is released, and the water is discharged from the communication pipe 10 to the ventilation path 3.
It is exhausted to the outside X through the opening 15 along with the air from the room Y taken in by the air. In this case, the air is forcibly exhausted by the auxiliary fan 9 to improve efficiency.

Next, during summer nights, the damper 8 is operated to close the opening 15 and the passage of the duct 11 is communicated with the room Y for use. That is, the air in the room Y is forcibly circulated through the communication pipe 10, the ventilation path 3, and the duct 11 by the auxiliary fan 9, and the moisture in the air that comes into contact with the hygroscopic body 6 in the ventilation path 3 during this circulation is It is absorbed by the hygroscopic body 6. Therefore, the air in the room Y is dehumidified, making humid nights more comfortable. A damper is also provided in the communication pipe 10 so that the air from outside X can be taken into the ventilation path 3 at night, and the cool air from outside X that has been dehumidified is taken into the room Y, thereby achieving a cooling effect. You can make it look promising. Further, sensors 13a and 13b are provided to detect the surface humidity of the heat collecting plate 5 and the outside temperature, respectively.
The operation of the auxiliary fan 9 and the opening and closing of the damper 8 may be controlled according to the detected temperature of the damper 13b. That is, if the difference between the temperature Ta detected by the sensor 13a and the temperature Tb detected by the sensor 13b is larger than zero, the auxiliary fan 9 is operated and the damper 8 is moved to open the opening 12, and if the difference is zero or small, the damper 8 is moved to open the opening 12. In this step, the fan 9 is operated to close the opening 15.

FIG. 8 shows another embodiment of the air conditioner main body A. In this embodiment, an opening is formed in the side surface of the casing 12 housing the auxiliary fan 9, so that the connection with the duct is performed from the side. The structure of the collector 1 is similar to that of the above embodiment.

FIG. 9 shows an embodiment capable of performing night-time cooling. In this embodiment, a water tank 17 provided with an external fin 16 is connected to the lower end of the ventilation path 3, and the water tank 17 is placed on the Y side of the room.

However, during the daytime, the damper 8 is opened so that the upper end of the ventilation path 3 opens to the outside X, and part of the moisture released from the hygroscopic body 6 heated by the heat collecting plate 5 is removed. part is released into the atmosphere and collected in the water tank 17.

At night, the damper 8 is closed. And the heat collecting plate 5 cooled by radiation cooling
The hygroscopic body 6 becomes cold due to the water tank 17.
Absorbs more moisture that evaporates. When the water in the water tank 17 evaporates, the latent heat of vaporization is taken away from the surroundings, and the water tank 17 cools down. Therefore, the fin 1 of the water tank 17
6 exchanges heat with the air in the room Y, and the air in the room Y is cooled, thereby cooling the room Y.

The present invention consists of a collector consisting of a heat collecting plate that collects solar heat, a ventilation path that is open at the upper and lower ends and communicates with the indoor side and the outdoor side, and a collector that is arranged in contact with the back side of the heat collecting plate and that circulates through the ventilation path. Since it has a hygroscopic material such as zeolite arranged so as to be in contact with the air, the absorbed moisture is released by heating the hygroscopic material through a heat collecting plate during the daytime solar heat. At night, the hygroscopic body can be cooled by a radiation-cooled heat collecting plate, and indoor or outdoor air can be dehumidified by passing through a ventilation passage. It is possible to dehumidify and ventilate, and it is also possible to take in dehumidified air from outside.In addition, by bringing in the cold air from outside at night into the room, a cooling effect can be expected. Since air can be passed through the interior by natural convection, there are no running costs for ventilation or dehumidification, making it very economical, and the manufacturing cost is low as no power part is required. Also, if a water tank or the like is installed to exchange heat with the indoor air, it is possible to cool the room at night.

[Brief explanation of the drawing]

Figures 1 to 3 are schematic cross-sectional views of an embodiment of the present invention, Figure 4 is a partially cutaway enlarged perspective view of the same essential parts, and Figure 5 is a cross-sectional view of the same embodiment with an auxiliary fan. Figure 6 is a schematic sectional view of another embodiment, Figure 7 is a schematic sectional view of another embodiment.
The figure is a perspective view of the air conditioner main body same as above, FIG. 8 is a perspective view of another embodiment in which the casing is changed from the above, and FIG. 9 is a schematic sectional view of still another embodiment of the present invention.
1 is a collector, 3 is a ventilation path, 5 is a heat collecting plate, 6 is a hygroscopic body, and A is an air conditioner main body.

Claims (1)

[Claims] 1. A collector consisting of a heat collecting plate that collects solar heat,
A ventilation passage whose upper and lower ends are open and communicates with the indoor side and the outdoor side, and a zeolite which is arranged in contact with the back surface of the heat collecting plate and is arranged so as to be in contact with the air flowing in the ventilation passage. An air conditioner comprising a hygroscopic body such as: