Development of a machine to pack spherical fruits and forced air precooling room

Bandit Jarimopas, Kasetsart Univ. Kamphaeng Saen Campus, Nakhon Pathom . Research and Development Inst. National Agricultural Machinery Center

Development of a machine to pack spherical fruits and forced air precooling room

1991

Bandit Jarimopas, Kasetsart Univ. Kamphaeng Saen Campus, Nakhon Pathom (Thailand). Research and Development Inst. National Agricultural Machinery Center

This research is to develop a machine to pack spherical fruits. The prototype consists of 3 parts, conveyor, feeder and packer. There are 3 conveyors two of which are identical, 50 cm wide and 122 cm long, and made of 3-inch wide conventional belt travelling horizontally. The vertical conveyor is 50 cm wide and 64 cm long. The feeder holding 100 kg spherical fruits is inclined, made of steel and lined by spong. the packer receiving fruits from the feeder semiautomatically fills up the empty basket. Performance test results the prototype can automatically pack tangerine and mangosteen fruits at the rate of 1.84 and 1.34 ton per hour. No mechanical damage of fruits were found. Forced Air Precooling Room has been designed and constructed with the insulated room of 3.0x3.6x2.4 cubic m. The unit consists of a cooling system using R12 refrigerant with cooling load of 1.5 tons, humidity control system, and forced air axial flow fan. Experiments showed that it took 8 hours to precool 484 kgs of tangerine from 32 to 4 deg C.

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