| 摘要 |
A controlled environment chamber for plant husbandry that is provided with a readily removable sealing top having therein separately sealed light source chamber containing incandescent and fluorescent lights. A control chamber is adjacent to the growing chamber and covered by the top for containing therein a fluid and electrical control circuit for energizing the lights in a timed cycle, individually manually controlling the lights, providing for the introduction of pressurized carbon dioxide into a control volume and simultaneously venting the growing chamber to the outside environment air when the lights are de-energized, discharging the carbon dioxide from the control volume into the growing chamber and simultaneously closing the vent when the lights are energized, and thermostatically controlling only the incandescent light for controlling the temperature within the growing chamber. The fresh air vent valve is spring closed and opened by means of an expansible chamber directly connected to the carbon dioxide control volume. The mixture of carbon dioxide within the growing chamber is controlled by means of a pressure regulator, and a pressure gauge determining the pressure within the control volume and indicating parts of carbon dioxide within the control volume per million parts of gas within the growing chamber. A motor drives one fan to provide circulation within the growing chamber, and another fan to circulate cooling air through the control chamber, light source chamber and through the open vent. Removable slats are provided in the bottom of the growing chamber above a nutrient filled tank for supporting plant containers.
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