초록 ▼

A device for liquid pumping, including a main chamber and a pump chamber for receiving a subportion of the liquid to be pumped from the main chamber and which is provided with means for cyclic variation of the pressure in the pump chamber between a pressure greater than a pressure less than the pres

A device for liquid pumping, including a main chamber and a pump chamber for receiving a subportion of the liquid to be pumped from the main chamber and which is provided with means for cyclic variation of the pressure in the pump chamber between a pressure greater than a pressure less than the pressure in the main chamber. The pump chamber is connected to the main chamber by at least one input opening and at least one output opening. The input opening has a substantially lower flow resistance in the direction into the pump chamber than in the opposite direction and the output opening has a substantially lower flow resistance in the direction out of the pump chamber than in the opposite direction. Thereby, when the pump chamber is at a pressure lower than the pressure in the main chamber, a larger liquid quantity is sucked into the pump chamber through the input opening and when the pump chamber is at a pressure lower than the pressure in the main chamber a larger liquid quantity is forced out through the output opening than through the input opening, so that a net liquid quantity is sucked in through the input opening and forced out through the output opening.

대표청구항 ▼

A device for liquid pumping, comprising a main chamber and a pump chamber for receiving a subportion of the liquid to be pumped from said main chamber and which is provided with means for cyclic variation of the pressure in said pump chamber between a pressure greater than the pressure in said main

A device for liquid pumping, comprising a main chamber and a pump chamber for receiving a subportion of the liquid to be pumped from said main chamber and which is provided with means for cyclic variation of the pressure in said pump chamber between a pressure greater than the pressure in said main chamber and a pressure less than the pressure in said main chamber, said pump chamber being connected to said main chamber by at least one input opening and at least one output opening, wherein said input opening has a substantially lower flow resistance in the direction into said pump chamber than in the opposite direction and said output opening has a substantially lower flow resistance in the direction out of the pump chamber than in the opposite direction, so that when said pump chamber is at a pressure lower than the pressure in said main chamber a larger liquid quantity is sucked into the pump chamber through the input opening and when said pump chamber is at a pressure lower than the pressure in said main chamber a larger liquid quantity is forced out through the output opening than through the input opening, so that a net liquid quantity is sucked in through said input opening and forced out through said output opening.