GREENHOUSE IRRIGATION AND HEATING SYSTEM Russian patent published in 1998 - IPC

FIELD: agriculture, in particular, equipment for irrigation and heating of plants growing in protected ground. SUBSTANCE: irrigation and heating system has tank 1, pressure regulator 5 with valve 7 connected with stem 8 carrying float 9. Pressure regulator 5 is connected with heating pipelines 13 provided with water discharge branch pipes 14, whose end parts are positioned in common horizontal plane. Ends of pipelines 13 are united by means of collector 16 and connected with vessel 17, within which stop valve 18 with stem 19 and float 20 are mounted. Float 20 is positioned at the level of plane coinciding with plane of water discharge openings of branch pipes 14. Such construction allows both irrigation and heating to be provided. EFFECT: wider operational capabilities, increased efficiency, simplified construction and enhanced reliability in operation. 2 dwg