Pumps – One fluid pumped by contact or entrainment with another – Jet
Patent
1996-09-06
1999-07-27
Thorpe, Timothy
Pumps
One fluid pumped by contact or entrainment with another
Jet
417181, 417188, 4171992, F04F 548
Patent
active
059279524
ABSTRACT:
An apparatus for vacuum absorption comprising a tank for accumulating circulating water; a waterway for circulating the circulating water by a pump disposed at an absorption inlet side of the tank; an aspirator disposed on the waterway; a reverse flow prevention mechanism for preventing the circulating water from flowing reversely into a vacuum vessel connected to the aspirator during the stoppage of the pump and for introducing fresh air from the aspirator into the vacuum vessel. The outlet of the waterway is provided under the water surface of the circulating water in the tank, and the reverse flow prevention mechanism comprises a bypass tube leading from the upstream of the aspirator to the water surface in the tank, and a valve disposed in the bypass tube passing air only to the direction toward the aspirator.
REFERENCES:
patent: 970232 (1910-09-01), Jakway
patent: 2381589 (1945-08-01), Hayes
patent: 3465595 (1969-09-01), Tansony
patent: 3901265 (1975-08-01), Groombridge
patent: 4501374 (1985-02-01), Robertson
Arimoto Keigo
Kanai Kunio
Kurematsu Masayuki
Nishikawa Hidetoshi
Kim Ted
Thorpe Timothy
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