VENTILATION PART OF MACHINE FOR CIRCULAR AIR CURTAIN, ESPECIALLY TOWARDS FOR PLANT PROTECTION FROM SUMMER FREEZING

摘要

Ventilacijski dio stroja za kružnu zračnu zavjesu, naročito za zaštitu bilja od proljetnog smrzavanja, prilagođen jednostavnoj montaži na farmi do visine (H4) ispod koje su prethodno montirani pogon i masivni sklopovi, dva ventilatora s kružnim difuzorom od dva diska (1.1.7.1) i (1.1.7.2) te postolje(1.2), na prikolici ili na pripremljenom tlu (T). Demontažni sklopovi (1.3) tvore vertikalni usisni cjevovod za dotok toplijeg zraka (ZT) s visine (H5), više od četiri metra, do usisa u ventilatore (1.1), gdje se miješaju s protokom hladnijeg zraka (ZH) ispod zračne zavjese (ZZ). Konstrukcija S-kanala (1.3.1) i (1.3 2) zajedno s bočnim ukrutama (1.3.4), koje pored stabilnosti osiguravaju i odnos protoka (ZT) i (ZH) u protoku kroz ventilatore (VV). Moguće je izostaviti gornji ventilator (1.1), gornji S-kanal (1.3.2),vratilo (1.1.2) i oba ležaja (1.1.4) i (1.1.5), ako se jedina glavina (1.1.1.2) montira izravno na vertikalno vratilo motora (EM) ili reduktora iz pogona.Ventilation part of machine for circular air curtain, especially for plant protection against spring frost, adapted to simple mounting on the farm to a height (H4) below which the drive and massive assemblies were pre-assembled, two fans with a two-disc circular diffuser (1.1.7.1) and (1.1.7.2) and the stand (1.2), on the trailer or on the prepared ground (T). Demountable assemblies (1.3) form a vertical intake pipeline for hot air (ZT) inflow from a height (H5) of more than four meters to suction into the fans (1.1), where they mix with the cooler air flow (ZH) below the air curtain (ZZ) ). The construction of the S-ducts (1.3.1) and (1.3 2) together with lateral stiffeners (1.3.4), which in addition to stability, also provide the ratio of flow (ZT) and (ZH) in the flow through the fans (VV). It is possible to omit the upper fan (1.1), the upper S-channel (1.3.2), the shaft (1.1.2) and both bearings (1.1.4) and (1.1.5) if the only hub (1.1.1.2) is mounted directly to the vertical shaft of the motor (EM) or gearbox from the drive.