Rotary expansible chamber devices – Heat exchange or non-working fluid lubricating or sealing – Non-working fluid passage in inner working or reacting member
Patent
1992-04-07
1994-03-08
Gluck, Richard E.
Rotary expansible chamber devices
Heat exchange or non-working fluid lubricating or sealing
Non-working fluid passage in inner working or reacting member
418202, F04C 1500
Patent
active
052922375
ABSTRACT:
A melt pump comprises a pump housing having an intake port and a discharge port and a pair of gear rotors. Each of the pair of gear rotors having a gear part and a shaft part integrated with each other, which are arranged within the pump housing in such a manner as to be rotatable in mutually meshing condition. The melt pump further comprises a recovering passage for guiding resin leaking through a clearance between the pump housing and each of the pair of gear rotors into the intake port, a cooling hole drilled inside each of the gear rotors while facing to each clearance forming region; and a pipe inserted into the cooling hole for supplying cooling liquid. A sleeve for lining the internal periphery of the cooling hole is located in the hole so as to utilize the inside of the sleeve as a cooling liquid passage.
REFERENCES:
patent: 4073607 (1978-02-01), Webb et al.
Fukumizu Shin'ichi
Konno Masashi
Nagami Nobuki
Orimo Taii
Uota Hideki
Gluck Richard E.
Kabushiki Kaisha Kobe Seiko Sho
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