Vacuum cleaner and filter bag insert for a vacuum cleaner

A - Human Necessities – 47 – L

Patent

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Details

A47L 5/36 (2006.01) A47L 9/14 (2006.01)

Patent

CA 2745889

The present invention relates to the field of vacuum cleaners and relates in particular to domestic or commercial cleaners which are provided with a bin (or vacuum chamber), rather than a filter bag, to collect air-entrained detritus. According to one aspect of the invention there is provided an insert (20,100) for converting a vacuum cleaner (10) of the aforementioned type so as to make the cleaner capable of operating in a mode in which air- entrained detritus is collected in a filter bag (29,109) located in the vacuum chamber (27), the insert comprising an enclosure (20,21,22,38,100,101 ) in which the filter bag may be accommodated, which enclosure comprises structural constraint means (21,22,23,24,38,103) which limits vacuum induced expansion of at least a region of the bag and maintains an airflow gap (28,108) between the filter bag outer surface and a vacuum chamber inner wall. The constraint means may in one embodiment be a plurality of inward facing spacer ribs (103). In another the constraint means may be a perforated drum (21 ).

La présente invention se rapporte au domaine des aspirateurs et se rapporte en particulier à des aspirateurs ménagers ou industriels qui sont équipés dun bac (ou chambre de vide), plutôt que dun sac filtre, pour collecter les détritus entraînés par lair. Selon un aspect de linvention, un insert (20,100) est utilisé pour convertir un aspirateur (10) du type précité de manière à ce que laspirateur puisse fonctionner dans un mode dans lequel les détritus entraînés par lair sont collectés dans un sac filtre (29,109) situé dans la chambre de vide (27), linsert comprimant une enceinte (20,21,22,38,100,101) dans laquelle le sac filtre peut être logé, ladite enceinte comprenant des moyens de contrainte structurale (21,22,23,24,38,103) qui limitent lexpansion provoquée par le vide dau moins une région du sac et maintiennent un espace découlement dair (28,108) entre la surface extérieure du sac filtre et une paroi intérieure de la chambre de vide. Les moyens de contrainte peuvent, dans un mode de réalisation, être une pluralité de nervures dentretoise tournées vers lintérieur (103). Dans un autre mode de réalisation, les moyens de contrainte peuvent être un tambour perforé (21).

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