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Fine algae culture device

  • US 6,348,347 B1
  • Filed: 02/17/2000
  • Issued: 02/19/2002
  • Est. Priority Date: 03/31/1998
  • Status: Expired due to Fees
First Claim
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1. A culture device of microalgae, said device being one of either shape selected from a domed shape, a conical shape, and a cylindrical shape,wherein the culture device of the domed shape comprises an outside semispherical dome of a transparent material, an inside semispherical dome of a transparent material, and a bottom portion connecting lower ends of the two domes, a cylindrical opening portion is provided at top part of the outside semispherical dome, and an introducing member of air and/or carbonic acid gas and a discharging member of a culture solution are provided in the bottom portion, wherein the culture device of the conical shape comprises an outside conical peripheral wall of a transparent material, a transparent inside conical peripheral wall, and a bottom portion connecting lower ends of the two peripheral walls, a cylindrical opening portion is provided at top part of the outside conical peripheral wall, and an introducing member of air and/or carbonic acid gas and a discharging member of a culture solution are provided in the bottom portion, or, wherein the culture device of the cylindrical shape comprises an outside cylindrical peripheral wall having an upper wall of a transparent material, an inside cylindrical peripheral wall having an upper wall a transparent material, and a bottom portion connecting lower ends of the two peripheral walls, a cylindrical opening portion is provided in central part of the upper wall of the outside cylindrical peripheral wall, and an introducing member of air and/or carbonic acid gas and a discharging member of a culture solution are provided in the bottom portion.

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