| 摘要 |
<p>A liquid chemical sprayer with improved functions is disclosed. The total spray time, the liquid chemical spray time per one period, the air washing time per one period and the water washing time are set by a timer. The opening/closing of a liquid chemical supply pipe, an air supply pipe for spraying and an air supply pipe for washing and the operation of an air compressor are controlled so as to allow the spraying of liquid chemicals and air washing of spray nozzles to be alternately carried out by the set liquid chemical spray time (t2) per one period and the set air washing time (t3) per one period during the set total spray time. If all the liquid chemicals in a liquid chemical container are exhausted, the operation of the air compressor and the operation of the chemical sprayer are stopped even before the set total spray time (t1) elapses. Each spray nozzle is washed by pumping and supplying water to respective spray nozzles during the set water washing time after the spraying of liquid chemicals is completed. When spraying liquid chemicals, carbon dioxide and/or ozone can be sprayed together by injecting the same into the air supply pipe for spraying. The operation of a plurality of liquid chemical sprays arranged at another location in a greenhouse can be simultaneously controlled with one control unit by connecting the plurality of liquid chemical sprays to the control unit through control signal lines.</p> |
