JPS6127010B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a greenhouse for growing plants, and more specifically, the chamber wall is made of a double wall, and the open lower end of the double wall is immersed in water to utilize the evaporation of water and the condensation of water vapor. The purpose is to control the room temperature.

Generally, in a greenhouse for growing plants, the temperature inside the greenhouse rises extremely during sunlight, but at night it drops to near the outside temperature due to heat radiation. Therefore, various ideas have been made to reduce heat radiation at night. The main methods are to stretch a transparent curtain along the inner surface of the room wall material, or to make the room wall a double structure and fill the combined inner surface with granular insulation material, but all of these methods are complicated in structure. However, power was required to open and close the curtains and to fill and remove the granular insulation material, which posed a practical problem.

The present invention takes into account the above-mentioned drawbacks of the conventional technology and makes it possible to automatically adjust the room temperature during daylight hours and at night using a simple device.

An embodiment of the present invention will be described below with reference to the drawings.A side wall 1 and a roof 2 are constructed into a continuous double wall structure by an outer member 3 and an inner member 4, both of which are made of a transparent material. The lower end is a water basin 5
The inside of the double wall is kept airtight by the water 6 in the basin 5. A water inlet 7 is provided in the outer member 3 under the water surface in the water basin 5 and is open, so that water 6 enters and exits the inside of the double wall according to the rise and fall of the water level in the water basin 5. ing. Further, the water basin 5 is provided with an overflow pipe 8, so that rainwater that has fallen onto the roof 2 is introduced into the water basin 5 through the side wall 1, and is discharged through the overflow pipe 8.

The plant growing greenhouse of the present invention is constructed as described above, and the inside of the double wall is airtight, so that during sunshine, the water 6 in the basin 5 evaporates and fills the inside of the double wall. This condenses on the inner surface of the outer member 3 and suppresses the transmission of sunlight, thereby preventing an abnormal rise in the temperature inside the greenhouse and making it possible to achieve uniform solar radiation into the greenhouse by using sunlight as scattered light. On the other hand, at night, as the outside air temperature falls, the condensation of water on the inner surface of the outer member 3 is further accelerated, making the wall surface opaque, suppressing the radiation loss of heat emitted from the inside of the greenhouse to the outside, and A significant heat retention effect can be expected as well as a reduction in thermal loss due to the heavy walls.

The inner member 4 is provided with a large number of communication holes 9, and an airtight plug 10 made of transparent plastic is inserted into the inner member 4 during normal use. By removing it, it is possible to prevent condensed water from adhering to the double wall.

As described above, the plant growing greenhouse according to the present invention has a self-regulating function that can suppress abnormal increases in the temperature inside the greenhouse during sunlight and also suppress heat radiation at night, and particularly requires power for this adjustment. Also, since there is no need for side gutters to treat rainwater, etc., the construction of the greenhouse is simple.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a plant growing chamber according to an embodiment of the present invention, and FIG. 2 is an enlarged sectional view of the same essential parts. 1...Side wall, 2...Roof, 3...Outer member, 4...Inner member, 5...Water basin, 6...Water, 7...Water opening, 8...Overflow pipe, 9...Communication hole, 10...Airtight plug.

Claims (1)

[Scope of Claims] 1. A plant growing greenhouse characterized in that the chamber wall has a transparent double wall structure, the lower end of the double wall is open and the lower end is immersed in water. 2. The plant growing greenhouse according to claim 1, wherein the open portion at the lower end of the double wall is formed by a water hole. 3. The plant growing greenhouse according to claim 1 or 2, which has an airtight structure except for the water-immersed part of the double wall.