Surface cleaning apparatus with off-centre dirt bin inlet
First Claim
Patent Images
1. A surface cleaning apparatus comprising:
- a) a fluid flow path extending from a dirt inlet to a clean fluid outlet and a fluid flow motor positioned in the fluid flow path;
b) a cyclonic cleaning stage provided in the fluid flow path and comprising a cyclone chamber and a dirt outlet;
c) at least one dirt chamber in fluid communication with the cyclone chamber and positioned below the cyclone chamber, the dirt chamber having an upper portion proximate the cyclone chamber, a lower portion, a central axis extending vertically between the upper portion and the lower portion, a dirt chamber inlet spaced from the central axis, and a plurality of sidewalls wherein the sidewalls proximate the dirt chamber inlet meet at an angle.
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Abstract
A surface cleaning apparatus is provided. The surface cleaning apparatus comprises a fluid flow path extending from a dirt inlet to a clean fluid outlet, and a fluid flow motor positioned in the fluid flow path. The surface cleaning apparatus further comprises a first cyclonic cleaning stage comprising a cyclone chamber. A dirt chamber is in fluid communication with the cyclone chamber and positioned below the cyclone chamber. The dirt chamber has a dirt chamber inlet that is off-center.
41 Citations
36 Claims
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1. A surface cleaning apparatus comprising:
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a) a fluid flow path extending from a dirt inlet to a clean fluid outlet and a fluid flow motor positioned in the fluid flow path; b) a cyclonic cleaning stage provided in the fluid flow path and comprising a cyclone chamber and a dirt outlet; c) at least one dirt chamber in fluid communication with the cyclone chamber and positioned below the cyclone chamber, the dirt chamber having an upper portion proximate the cyclone chamber, a lower portion, a central axis extending vertically between the upper portion and the lower portion, a dirt chamber inlet spaced from the central axis, and a plurality of sidewalls wherein the sidewalls proximate the dirt chamber inlet meet at an angle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 29)
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24. A surface cleaning apparatus comprising:
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a) a fluid flow path extending from a dirt inlet to a clean fluid outlet and a fluid flow motor positioned in the fluid flow path; b) a first cyclonic cleaning stage comprising a cyclone chamber, a dirt outlet and a dirt outlet end; c) a dirt chamber in fluid communication with the cyclone chamber and positioned at the dirt outlet end, the dirt chamber having a maximum length and an end wall in which a dirt chamber inlet is provided, the dirt chamber inlet is off-centre by a distance of at least 25% of the maximum length, the dirt chamber inlet comprising an opening in the end wall whereby separated particulate material travels downwardly into the dirt collection chamber through all of the opening, wherein the dirt chamber has a first portion proximate the cyclone chamber, a second portion, and a central axis extending vertically between the first portion and the second portion, and the dirt chamber inlet is spaced from the central axis. - View Dependent Claims (25, 26, 27, 28, 30)
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31. A surface cleaning apparatus comprising:
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a) a fluid flow path extending from a dirt inlet to a clean fluid outlet and a fluid flow motor positioned in the fluid flow path; b) a first cyclonic cleaning stage comprising a cyclone chamber, a dirt outlet and a dirt outlet end; c) a second cyclonic cleaning stage downstream from the cyclone chamber, the second cyclonic cleaning stage comprises a plurality of cyclones in parallel; d) a dirt chamber in fluid communication with the cyclone chamber and positioned at the dirt outlet, the dirt chamber having a maximum length and the dirt chamber inlet that is off-centre by a distance of at least 25% of the maximum length. - View Dependent Claims (32)
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33. A surface cleaning apparatus comprising:
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a) a fluid flow path extending from a dirt inlet to a clean fluid outlet and a fluid flow motor positioned in the fluid flow path; b) a first cyclonic cleaning stage comprising a cyclone chamber, a dirt outlet and a dirt outlet end; c) a dirt chamber in fluid communication with the cyclone chamber and positioned at the dirt outlet end, the dirt chamber having a maximum length and the dirt chamber inlet that is off-centre by a distance of at least 25% of the maximum length, wherein the dirt chamber has an end wall in which the dirt chamber inlet is provided and the cyclone chamber has a side wall that extends to the end wall.
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34. A surface cleaning apparatus comprising:
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a) a fluid flow path extending from a dirt inlet to a clean fluid outlet and a fluid flow motor positioned in the fluid flow path; b) a first cyclonic cleaning stage comprising a cyclone chamber, a dirt outlet and a dirt outlet end; c) a dirt chamber in fluid communication with the cyclone chamber and positioned at the dirt outlet end, the dirt chamber having a maximum length and the dirt chamber inlet that is off-centre by a distance of at least 25% of the maximum length, wherein the dirt outlet is centrally located with respect to the cyclone chamber.
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35. A surface cleaning apparatus comprising:
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a) a fluid flow path extending from a dirt inlet to a clean fluid outlet and a fluid flow motor positioned in the fluid flow path; b) a first cyclonic cleaning stage comprising a cyclone chamber, a dirt outlet and a dirt outlet end; c) a dirt chamber in fluid communication with the cyclone chamber and positioned at the dirt outlet end, the dirt chamber having a maximum length and an end wall in which a dirt chamber inlet is provided, the dirt chamber inlet is off-centre by a distance of at least 25% of the maximum length, the dirt chamber inlet comprising an opening in the end wall whereby separated particulate material travels downwardly into the dirt collection chamber through all of the opening; and
,d) a generally transversely extending plate positioned in the at least one dirt chamber and facing the dirt outlet.
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36. A surface cleaning apparatus comprising:
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a) a fluid flow path extending from a dirt inlet to a clean fluid outlet and a fluid flow motor positioned in the fluid flow path; b) a first cyclonic cleaning stage comprising a cyclone chamber, a dirt outlet and a dirt outlet end; c) a dirt chamber in fluid communication with the cyclone chamber and positioned at the dirt outlet end, the dirt chamber having a maximum length and the dirt chamber inlet that is off-centre by a distance of at least 25% of the maximum length, wherein all of the sidewalls of the dirt chamber meet at an angle.
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Specification