CYCLONIC SURFACE CLEANING APPARATUS WITH SEQUENTIAL FILTRATION MEMBERS
First Claim
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1. A surface cleaning apparatus comprising:
- (a) a dirty air inlet, a clean air outlet downstream, a fluid flow passage extending from the dirty air inlet to the clean air outlet,(b) a suction motor provided in the fluid flow passage;
(c) a filtration apparatus downstream from the dirty air inlet and comprising a cyclone having a cyclone outlet,(d) a foam filter downstream from the cyclone outlet;
(e) a felt filter downstream from the foam filter; and
,(f) a HEPA filter downstream from the felt filter.
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Abstract
A cyclonic surface cleaning apparatus incorporates a series of sequential physical filtration members to progressively remove smaller particulate matter whereby the physical filtration members collectively have a longer in use time prior to being clogged, thereby permitting a longer operating time prior to the cleaning or replacement of the physical filtration members.
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Citations
17 Claims
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1. A surface cleaning apparatus comprising:
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(a) a dirty air inlet, a clean air outlet downstream, a fluid flow passage extending from the dirty air inlet to the clean air outlet, (b) a suction motor provided in the fluid flow passage; (c) a filtration apparatus downstream from the dirty air inlet and comprising a cyclone having a cyclone outlet, (d) a foam filter downstream from the cyclone outlet; (e) a felt filter downstream from the foam filter; and
,(f) a HEPA filter downstream from the felt filter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification