Control system for periodically feeding nutrient solutions to hydroponic plant beds专利检索-水培无土栽培可控环境农业作物管理专利检索查询-专利查询网

Control system for periodically feeding nutrient solutions to hydroponic plant beds

阅读：964发布：2022-11-26

专利汇可以提供Control system for periodically feeding nutrient solutions to hydroponic plant beds专利检索，专利查询，专利分析的服务。并且A control system and circuit for periodically pumping nutrient solutions to hydroponic plant beds. Two twenty-four hour electric clock switches are so interconnected that the first one is adapted to periodically make contact at preselected intervals and for preselected time periods, while the second one is adapted to disable the first one during a preselected (relatively dark) part of each day. The second (or day-night) switch also controls a solenoid valve so that replenishing water can be fed to a storage vat for nutrient solution only at night to avoid the danger of vat overflow. Another feature is the provision of an outlet connected across the pump circuit to permit a common electric clock to be used to time a pumping cycle or a series (day, week, etc.) of cycles.，下面是Control system for periodically feeding nutrient solutions to hydroponic plant beds专利的具体信息内容。

权利要求

1. In a hydroponic system comprising at least one plant bed and a storage vat means, electric pump means connected between said plant bed and said storage vat means for pumping nutrient solution To said plant bed from said storage vat means, means connected to said vat means for replenishing lost water to said vat means and including a solenoid-operated valve, the improvement comprising: a first clock switch means electrically connected to said pump means for periodically energizing said pump means, said first clock means being adjustable as to the time and the duration of each pumping cycle, a second clock switch means electrically connected to said first clock switch means and adapted to disable said first clock switch means adjustably between near sunset and near sunrise times, said second clock switch means being further augmented by means for permitting opening of said solenoid valve only during the time said first clock switch means is disabled by said second clock switch means, whereby said storage vat means is protected against possible overflowing by back drainage from a recently flooded bed into an already full vat means.

2. The invention according to claim 1, said first clock switch means, as well as said second clock switch means, being of the 24 hour type.

3. The invention according to claim 1, said water-replenishing means including a float-operated valve in fluid-flow series with said solenoid-operated valve.

4. The invention according to claim 1 and additionally comprising a conventional self-starting synchronous electric clock connected across said pump means to indicate the duration of one or a series of pumping cycle(s).

5. The invention according to claim 4, further including a conventional wall-type electric outlet for receiving a conventional plug-in connector on a clock cord.

6. The invention according to claim 1, in which both of said clock switch means are mounted on the forwardly facing rear wall of a shallow metallic box, and a pair of relays and a plurality of binding posts on a strip of insulation are also mounted in said metallic box.

7. The invention according to claim 6 and additionally comprising a laterally hinged cover panel on which additional circuit elements are mounted for easy operation and/or repair or replacement.

8. The invention according to claim 7, said additional elements including a protective fuse, a manual master power switch, a manual switch to close the circuit to said electric pump means at will, and at least one signal lamp to indicate the energized condition of at least one of said pump circuits and said system as a whole.

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Control system for periodically feeding nutrient solutions to hydroponic plant beds

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