Gas separation – Plural serial basically diverse separating media – Plural stages in unitary casing
Reexamination Certificate
1998-04-28
2001-01-09
Simmons, David A. (Department: 1724)
Gas separation
Plural serial basically diverse separating media
Plural stages in unitary casing
C055S418000, C055S459100, C055SDIG003, C015S347000, C015S350000, C015S353000
Reexamination Certificate
active
06171356
ABSTRACT:
INTRODUCTION
This invention relates to a cyclonic air flow generator and, more particularly, to a central vacuum cyclonic generator used in residential and commercial establishments which may have a plurality of inlets used for attaching a vacuum hose.
BACKGROUND OF THE INVENTION
There are a variety of central vacuum generators in the marketplace which are used to generate a vacuum to which a hose can be attached and which then acts to create a suction in the hose so that debris in the form of dust, dirt and the like can be suctioned into the hose and thence into the generator where it is deposited and remains. After a certain period when the cannister operable connected to the central vacuum generator is full, the cannister is removed and the accumulated debris is dumped from the cannister. A typical one of such canisters and central vacuum generators is one made by Hayden.
The Hayden device uses a centrally positioned cone within the cannister and located below a cartridge filter. The vacuum is created by a motor driving a two(2) or three(3) stage utility impeller. The debris entering the cannister though the inlet to the cannister from the attached hose is intended to spin about the inside of the cone from the upper to the lower portion which is open because the cone is truncated. The debris is then deposited in the central portion of the cannister cone directly below the cone opening.
The problem with such canisters is that the technique for creating low and high pressure zones within the canister is not well understood with the result that efforts made to enhance the vacuum and deposit the debris properly in the cannister are unsatisfactory. The known techniques result in inefficient vacuuming action. Specifically, little of the debris deposited within the canister takes full advantage of the vortex rings created by the configuration of the Haydon apparatus.
SUMMARY OF THE INVENTION
According to one aspect of the invention, there is provided a cyclone generator for a central vacuum system comprising a first cone within which debris received from ambient surroundings is circulated, a first opening between said first cone and the outside of said first cone to allow communication of air between said first cone and a lower casing of a cannister in which said first cone is positioned, a second opening separate from said first opening and allowing communication of air from said central portion of said lower casing of said cannister upwardly and into a suction generator positioned in the central area of said cyclone generator above said first cone.
According to a further aspect of the invention, there is provided a method of creating cyclonic air flow within a cannister comprising initiating a suction within said cannister, allowing said suction to suck air into said cannister through an inlet, circulating said air in said cannister around a first conical member, and allowing communication of said air between said first conical member and the inside of said cannister.
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“Typical Flannel Bag Type Filter”. 1 page document labelled Attachment A.
“Vacuflo System”. 2 page document labelled Attachment B.
“Central Vaccum Supersystem”. 2 page document labelled Attachment C.
Pham Minh-Chau T.
Simmons David A.
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