Pumps – One fluid pumped by contact or entrainment with another – Jet
Patent
1998-11-20
2000-11-21
Freay, Charles G.
Pumps
One fluid pumped by contact or entrainment with another
Jet
417198, 13762414, 604 74, F04F 548, A61M 106
Patent
active
061493953
ABSTRACT:
A suction pulsator (1) used to periodically generate a vacuum in a container connected to it, especially in a collection container for mother's milk, which is provided with a suction funnel. A central nozzle hole (25) of a nozzle body (20) is provided, wherein a compressed air flow flows through the nozzle hole (25) and the nozzle body (20) is concentrically surrounded by a ring-shaped suction gap (35), wherein the nozzle (25) opens into a narrow, radial outlet gap (36), which is formed between a radial deflecting surface (40), which guides the compressed air flow over the suction gap (35), and annular surfaces (29, 30) of the nozzle body (20) and of a nozzle jacket (13), which concentrically surround the nozzle hole (25) and the suction gap (35). The suction gap (35) opening openly into the outlet gap (36) is in connection with a suction line (39), which can be connected to the collection container through a connection opening (38), which is arranged away from the outlet gap (36).
REFERENCES:
patent: 334852 (1886-01-01), Eberman
patent: 2908227 (1959-10-01), McDougall
patent: 3146726 (1964-09-01), Sidebottom
patent: 4961726 (1990-10-01), Richter
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