Dust extractor comprising a dust cyclone container adjacent to a fine filter section with a battery powered blower/fan motor

Abstract

The present disclosure relates to dust extractor (1) comprising a dust cyclone container (3) having a contaminated portion downstream an air inlet (2) and a clean portion downstream the contaminated portion, and a dust separating part (9) there between. The contaminated portion is provided with a dust container (59). The dust extractor (1) comprises a fine filter section (12) arranged adjacent to the dust cyclone container (3) and having a contaminated section and a clean section downstream the contaminated section, and a fine filter part (15) is adapted to be provided between the contaminated section and the clean section. An air channel (47) runs between a clean side of the dust cyclone container (3) and a contaminated side of the fine filter part (15). The dust extractor also comprises a mobility section (66) comprising wheels and a blower/fan motor (10) for drawing air from the air inlet (2) through the dust extractor. The dust cyclone container (3) has a center axis (48) along its longitudinal extension, and the fine filter part (15) is provided at a radial distance from the dust cyclone container (3) along a plane (P) perpendicular to the center axis (48) of the dust cyclone container (3), the plane (P) coinciding with the dust cyclone container (3) and a portion of the fine filter part (15). The blower/fan motor (10) is adapted to be powered at least partly by at least one onboard battery (61), and preferably two batteries (61), wherein the at least one battery (61) is arranged to be received in at least one battery slot (62) provided in the fine filter section (12) or in the mobility section (66).

1 . A dust extractor comprising
 a dust cyclone container with an air inlet for connecting to a hose, the dust cyclone container having a contaminated portion downstream the air inlet and a clean portion downstream the contaminated portion, and a dust separating part is adapted to be provided between the contaminated portion and the clean portion, the dust separating part comprising at least one cyclone and/or a coarse filter part, wherein the contaminated portion of the dust cyclone container is adapted to be provided with a dust container for collecting relatively coarse dust,   a fine filter section arranged adjacent to the dust cyclone container and having a contaminated section and a clean section downstream the contaminated section, and a fine filter part is adapted to be provided between the contaminated section and the clean section,   
       a mobility section comprising wheels and a frame,
 an air channel, between a clean side of the dust cyclone container and a contaminated side of the fine filter part, 
 a fan motor mounted to the fine filter section, for drawing air from the air inlet through the dust separating part, through the air channel and through the fine filter part, and allowing air to exit to the ambient after having passed the fine filter part, 
 
       wherein the dust cyclone container has a center axis along its longitudinal extension, and the fine filter part is provided at a radial distance from the dust cyclone container along a plane perpendicular to the center axis of the dust cyclone container, the plane coinciding with the dust cyclone container and a portion of the fine filter part, and
 wherein the blower/fan motor is adapted to be powered at least partly by at least one onboard battery, wherein the at least one battery is arranged to be received in at least one battery slot provided in the fine filter section or in the mobility section. 
 
     
     
         2 . The dust extractor according to  claim 1 , wherein the dust separating part comprises an opening facing a clean side of the dust separating part, wherein the opening of the dust separating part lies in the plane, wherein there is a shortest distance between an opening of the fine filter part that faces a contaminated side of the fine filter part and the plane, wherein that distance falls below 0.3 times a length of the fine filter part along a center axis of the fine filter part. 
     
     
         3 . (canceled) 
     
     
         4 . The dust extractor according to  claim 1 , wherein the dust cyclone container has a diameter perpendicular to the center axis, and the fine filter part has a center axis, wherein a first shortest distance between the center axis of the dust cyclone container and the center axis of the fine filter part is less than 1.2 times the diameter of the dust cyclone container along an extension of the fine filter part. 
     
     
         5 . The dust extractor according to  claim 1 , wherein the fine filter section is adapted to hold a plurality of fine filter parts, the dust cyclone container has a diameter perpendicular to the center axis, and the fine filter parts have center axes, wherein a second distance is a shortest distance between the center axis of the dust cyclone container and a center axis of a fine filter part that is farthest away from the dust cyclone container wherein the second distance is less than 1.2 times the diameter of the dust cyclone container along the extension of the fine filter part. 
     
     
         6 . (canceled) 
     
     
         7 . The dust extractor according to  claim 1 , wherein the dust extractor comprises a lid arrangement arranged to cover a top of the dust cyclone container and a top of the fine filter section, in a normal operative configuration of the dust extractor. 
     
     
         8 . (canceled) 
     
     
         9 . The dust extractor according to  claim 7 , wherein the lid arrangement comprises interior walls for the air channel, such that interior walls of the lid arrangement at least partly define the air channel. 
     
     
         10 - 20 . (canceled) 
     
     
         21 . The dust extractor according to  claim 1 , wherein opposing outer surfaces of the dust cyclone container and the fine filter section at least partly have substantially complementary shapes, wherein said complementary shapes are essentially cylindrical. 
     
     
         22 . (canceled) 
     
     
         23 . The dust extractor according to  claim 1 , wherein the fine filter section partly surrounds the dust cyclone container such that the fine filter section extends on lateral sides of a portion of the dust cyclone container. 
     
     
         24 . The dust extractor according to  claim 1 , wherein the dust cyclone container and the fine filter section are detachably mounted to each other, by fasteners. 
     
     
         25 . The dust extractor according to  claim 1 , wherein the dust container is a plastic bag which during operation at least periodically constitutes a barrier to the ambient air for the interior of the dust cyclone container, such that, during operation, the air pressure on the inside of the plastic bag is at least periodically lower than the air pressure on the outside of the plastic bag. 
     
     
         26 . The dust extractor according to  claim 1 , wherein the dust separating part is a coarse filter part having a center axis coinciding with the center axis of the dust cyclone container. 
     
     
         27 . The dust extractor according to  claim 1 , wherein the dust cyclone container includes at least one cyclone. 
     
     
         28 . (canceled) 
     
     
         29 . The dust extractor according to  claim 1 , wherein the battery slot is positioned below a bottom of the fine filter part in a normal operative position of the dust extractor when the fine filter part is mounted to the fine filter section, wherein the bottom is positioned at the end of the fine filter part opposite to the end having the opening. 
     
     
         30 . The dust extractor according to  claim 1 , wherein the battery slot at least partly is positioned on, or below, a bottom plane that runs perpendicular to the center axis of the dust cyclone container and wherein a bottom of the dust cyclone container, in the region of the mounting position for the dust container, lies in the bottom plane. 
     
     
         31 . The dust extractor according to  claim 1 , wherein the battery slot is positioned below a bottom of the fine filter part and a bottom plane, wherein the bottom is positioned opposite the opening of the fine filter part when the fine filter part is mounted to the fine filter section, and wherein the bottom plane runs perpendicular to the center axis of the dust cyclone container, and wherein a bottom of the dust cyclone container, in the region of the mounting position for the dust container, lies in the bottom plane. 
     
     
         32 . The dust extractor according to  claim 1 , wherein a battery insertion direction of the at least one battery slot is arranged at an angle with respect to a plane orthogonal to the center axis of the fine filter part. 
     
     
         33 . The dust extractor according to  claim 32 , wherein the battery insertion direction of the at least one battery slot is arranged at a downward slope with respect to a horizontal plane when the dust extractor is in use. 
     
     
         34 . The dust extractor according to  claim 1 , wherein the air through the fine filter part is guided along a path through at least one battery compartment of the at least one battery slot. 
     
     
         35 . The dust extractor according to  claim 34 , wherein the at least one battery slot comprises a first battery compartment and a second battery compartment, wherein the path passes only via the second battery compartment. 
     
     
         36 . The dust extractor according to  claim 1 , wherein the at least one battery slot comprises a first battery compartment and a second battery compartment, wherein one or both of the first and second battery compartments comprise a cooling air entry aperture and a cooling air exit aperture, wherein the air through the fine filter part is arranged to enter the first battery compartment or the second battery compartment via the cooling air entry aperture after having passed through the fine filter part, and to exit the first battery compartment or the second battery compartment via the cooling air exit aperture. 
     
     
         37 . The dust extractor according to  claim 1 , wherein the mobility section is releasably attached to, the fine filter section by rotary fasteners and the fine filter section releasably attached to, the dust cyclone container by rotary fasteners. 
     
     
         38 . The dust extractor according to  claim 1 , wherein the dust extractor comprises a lid arrangement arranged to cover a top of the dust cyclone container and a top of the fine filter section, in a normal operative configuration of the dust extractor, wherein the lid arrangement is provided with a relief valve that, when opened, is adapted to enable air from the ambient to enter via the relief valve into a clean side of the coarse filter part in the dust cyclone container, enabling the pressure at the clean side of the coarse filter part to be increased to a degree enabling dust attached to the contaminated side of the coarse filter part to be released from the coarse filter. 
     
     
         39 - 47 . (canceled) 
     
     
         48 . A dust extractor comprising a fan motor arranged to draw air from an air inlet of the dust extractor through a dust separating part and through a fine filter part, the dust extractor further comprising one or more battery compartments, wherein the air drawn from the air inlet is arranged to be guided along a path via at least one of the one or more battery compartments.