| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a cultivation device transferring heat from a heat exchanger to culture medium as uniformly as possible to be improved in heat transfer efficiency, inhibited from influence such as corrosion due to the culture medium as much as possible, and also facilitated in production and/or fabrication. <P>SOLUTION: The cultivation device includes: a cultivation tank 1 which has a bottom wall 3 and side walls 4 and in the inside of which culture medium 2 growing plant roots can be charged; a tubular heat exchanger 10 heating or cooling the culture medium 2; and a metallic placing board 20 on which the culture medium 2 is placed. The cultivation device is structured by: arranging the heat exchanger 10 to come in contact with the back side of the placing board 20 so as to transfer the heat to the placing board 20; setting up a holding part 25 having a recessed portion 24 where the placing board 20 is supported and the heat exchanger 10 is buried to be held, to the bottom wall 3; attaching an impermeable sheet 27 receiving the culture medium 2; setting up a lid 30 blocking the opening 5 of the cultivation tank 1 and having a plurality of through-holes 32 letting the plants pass through to hold them; and setting up a water sprinkler pipe 35 having many holes through which water is sprinkled to the culture medium 2. <P>COPYRIGHT: (C)2010,JPO&INPIT |
