Heat exchange – With cleaning means for heat exchanger
Patent
1987-08-05
1989-09-12
Yeung, James C.
Heat exchange
With cleaning means for heat exchanger
15 35, F28G 112
Patent
active
048651214
ABSTRACT:
A cleaning system for cleaning tubing used for conducting a fluid therethrough, which system includes balls circulated with the fluid through the tubing from its upstream side to its downstream side, means for separating the balls from the fluid at the downstream side of the tubing, and recirculating means for recirculating the balls back to the upstream side of the tubing. The recirculating means comprises a chamber; a first passageway from the chamber to the downstream side of the tubing where the balls are separated from the fluid; a second passageway from the chamber to a point of lower pressure than that at the downstream side of the tubing; a valve in the second passageway effective when opened to produce, by the difference in pressure between the downstream side of the tubing and the point of lower pressure, a flow of the fluid and balls from the downstream side of the tubing to the chamber; a separator between the chamber and the second passageway to permit the fluid, but not the balls, to flow through the second passageway to the point of lower pressure; and an ejector for ejecting the balls collected in the chamber to the upstream side of the tubing.
REFERENCES:
patent: 2948143 (1960-08-01), Prutt
patent: 3919732 (1975-11-01), Honma et al.
patent: 4556102 (1985-12-01), Bochinski et al.
Barish Benjamin J.
Yeung James C.
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