Direct sink filtration device, system, and method

A method of installing a sink filtration device to a drain hole of a sink and to a drainpipe, the method comprising:

• positioning a basin gasket on a top surface of the sink around the drain hole;
• inserting a basin into the drain hole so that a basin flange of the basin is positioned on the basin gasket, the basin having one or more basin side wall and a basin bottom wall that together at least partially define a basin chamber;
• positioning an insert gasket on a top surface of the basin bottom wall around a basin outlet defined by the basin bottom wall;
• inserting a tubular threaded insert through the basin outlet so that an insert flange of the tubular threaded insert is positioned on the insert gasket;
• positioning a basin sleeve against a bottom surface of the sink around the drain hole so that a sleeve gasket seated on a sleeve flange of the basin sleeve contacts the bottom surface of the sink and so that the basin sleeve receives the basin and a sleeve aperture at a bottom end of the basin sleeve receives at least a portion of the tubular threaded insert;
• fastening a basin nut to the tubular threaded insert so that the basin nut applies a downward force on the basin via the insert flange and an upward force on a bottom surface of the basin sleeve, thereby clamping the basin and the basin sleeve to the sink;
• and
• inserting a cartridge assembly through the drain hole so that the cartridge assembly is removably positioned inside the basin to define with the one or more basin side wall an outer volume of the basin chamber, the cartridge assembly comprising:
• a cartridge outlet tube having a lower end extending into a portion of the tubular threaded insert when the cartridge assembly is in the basin, the lower end defining a tube outlet in fluid communication with the tubular threaded insert, and an upper end defining a tube inlet,
• an outlet housing at least partially defining a housing channel connecting the outer volume to the tube inlet when the cartridge assembly is positioned in the basin, the housing channel having a housing channel inlet positioned below the tube inlet, and
• a collector defining a collector chamber and having a collector bottom wall positioned above the housing channel inlet, the collector at least partially defining one or more collector channel connecting the outer volume to the collector chamber when the cartridge assembly is positioned in the basin, the one or more collector channel having a collector channel outlet through which fluid flows into the collector chamber from the outer volume when the cartridge assembly is positioned in the basin, the collector channel outlet being located above the collector bottom wall.

A device for coupling to a drain hole of a sink and to a drainpipe, the device comprising:

• a basin assembly for coupling to the sink at the drain hole, the basin assembly comprising:
• one or more basin side wall defining a basin inlet for receiving fluid flowing from the drain hole, and
• a basin bottom wall connected to the one or more basin side wall to at least partially define a basin chamber, the basin bottom wall further defining a basin outlet through which fluid can flow to the drainpipe;
• and
• a cartridge assembly sized to fit through the drain hole and removably coupled with the basin assembly inside the basin chamber to define an outer volume of the basin chamber with the one or more basin side wall, the cartridge assembly comprising:
• a cartridge outlet tube having a lower end extending into the basin outlet and defining a tube outlet in fluid communication with the basin outlet, and an upper end defining a tube inlet at a first distance relative to the basin bottom wall when the cartridge assembly is positioned in the basin chamber,
• an outlet housing defining a housing channel connecting the outer volume to the tube inlet, the housing channel having a housing channel inlet at a second distance relative to the basin bottom wall when the cartridge assembly is positioned in the basin chamber, the second distance being shorter than the first distance, and
• a collector defining a collector chamber in the basin chamber and having a collector bottom wall at a third distance relative to the basin bottom wall when the cartridge assembly is positioned in the basin chamber, the third distance is longer than the second distance, the collector defines one or more collector channel connecting the outer volume to the collector chamber, the one or more collector channel having a collector channel outlet through which fluid flows into the collector chamber from the outer volume, the collector channel outlet being located at a fourth distance relative to the basin bottom wall when the cartridge assembly is positioned in the basin chamber, the fourth distance being longer than the third distance.