A liquid dispenser may include a container having an upper opening, a pump provided in the container, a pipe through which liquid discharged from the pump is transferred, a top plate having an upper surface over which liquid flows, a filter assembly provided below the top plate, a base provided below the container, and a thermoelectric element provided in the base to cool the liquid in the container.

A filtration apparatus for a container, the apparatus includes a connection portion for securing the apparatus to the container; a housing; a hand pump attached to the housing, the hand pump comprising an inlet, an outlet, and a user-operated actuator, the hand pump is configured to pass filtered water through the inlet in a first direction towards the outlet of the hand pump during a first stroke of the user-operated actuator, and in both the first direction and in a second direction opposite to the first direction during a second stroke of the user-operated actuator; and a filter fluidly connected to the inlet of the hand pump, the housing is configured to house the filter and at least part of the hand pump, the housing is configured to pass water, the filter is configured to be a two-way valve for regulating water flow between the housing and the hand pump.

A method for evaluating a service interval for replacing a filter of a system for extracting an aqueous liquid from a motor vehicle tank in response to the risk of progressive clogging of said filter from use. A compound clogging risk decision value (K) is generated (320) on the basis of the sum of a plurality of elementary values (k1, k2, k3, k4) of the clogging risk, each related to a risk criterion depending on the operation of the extraction system since commissioning of the filter. The compound clogging risk decision value is compared (340) to a threshold value, and an alert to replace the filtration device is generated (351, 352) if the compound clogging risk value exceeds the threshold value.

A method for evaluating a service interval for replacing a filter of a system for extracting an aqueous liquid from a motor vehicle tank in response to the risk of progressive clogging of said filter from use. A compound clogging risk decision value (K) is generated (320) on the basis of the sum of a plurality of elementary values (k1, k2, k3, k4) of the clogging risk, each related to a risk criterion depending on the operation of the extraction system since commissioning of the filter. The compound clogging risk decision value is compared (340) to a threshold value, and an alert to replace the filtration device is generated (351, 352) if the compound clogging risk value exceeds the threshold value.

A fluid filtration system includes a fluid storage vessel such as a bioreactor, a filter housing including a filter element disposed therein, a pump coupled between the fluid storage vessel and the filter housing, and a flow diverter disposed between the pump and the filter housing. The pump is configured to move fluid from the fluid storage vessel through the filter element, and the flow diverter is configured for selectively directing fluid received from the pump to the first or second end of the filter housing. In a first mode of operation, the flow diverter directs flow through the filter housing in a first direction, while in a second mode of operation, the flow diverter directs flow through the filter housing in a second direction opposite the first direction.

A fluid filtration system includes a fluid storage vessel such as a bioreactor, a filter housing including a filter element disposed therein, a pump coupled between the fluid storage vessel and the filter housing, and a flow diverter disposed between the pump and the filter housing. The pump is configured to move fluid from the fluid storage vessel through the filter element, and the flow diverter is configured for selectively directing fluid received from the pump to the first or second end of the filter housing. In a first mode of operation, the flow diverter directs flow through the filter housing in a first direction, while in a second mode of operation, the flow diverter directs flow through the filter housing in a second direction opposite the first direction.

The embodiments of the disclosure provide a biological filtration system and a controlling method for the biological filtration system. The biological filtration system for filtering a solution in a bioreactor, comprises: a filter device having a top end and a bottom end, one of the top end and the bottom end being in fluid communication with the bioreactor for filtering the solution in the bioreactor; a liquid chamber in fluid communication with the other one of the top end and the bottom end for storing a solution in the filter device; a positive pressure pump, in fluid communication with the liquid chamber, for driving a solution to flow from the liquid chamber to the bioreactor; and a negative pressure pump, in fluid communication with the liquid chamber, for driving a solution to flow from the bioreactor to the liquid chamber.

The embodiments of the disclosure provide a biological filtration system and a controlling method for the biological filtration system. The biological filtration system for filtering a solution in a bioreactor, comprises: a filter device having a top end and a bottom end, one of the top end and the bottom end being in fluid communication with the bioreactor for filtering the solution in the bioreactor; a liquid chamber in fluid communication with the other one of the top end and the bottom end for storing a solution in the filter device; a positive pressure pump, in fluid communication with the liquid chamber, for driving a solution to flow from the liquid chamber to the bioreactor; and a negative pressure pump, in fluid communication with the liquid chamber, for driving a solution to flow from the bioreactor to the liquid chamber.

A liquid filtration system according to the present invention comprises a bioreactor; a filter configured to filter liquid passing therethrough; a perfusion pump configured to move liquid between the bioreactor and the filter; a liquid line providing fluidic communication between the bioreactor, perfusion pump and filter; and a bleed outlet provided on the liquid line, the bleed outlet configured to provide means to remove liquid selectively from the system under the action of the perfusion pump. With the liquid filtration system according to the present invention, both the filtering and bleed functions may be performed under the action of a single pump, thereby significantly reducing the complexity and cost of the components required.

A liquid filtration system according to the present invention comprises a bioreactor; a filter configured to filter liquid passing therethrough; a perfusion pump configured to move liquid between the bioreactor and the filter; a liquid line providing fluidic communication between the bioreactor, perfusion pump and filter; and a bleed outlet provided on the liquid line, the bleed outlet configured to provide means to remove liquid selectively from the system under the action of the perfusion pump. With the liquid filtration system according to the present invention, both the filtering and bleed functions may be performed under the action of a single pump, thereby significantly reducing the complexity and cost of the components required.