PUMP AND METHOD FOR MANUFACTURING PUMP

摘要

PURPOSE: A pump and a manufacturing method thereof are provided to produce the pump easily with compact structure, and to improve the efficiency of the pump and the reliability by installing the check valve between the pump chamber and the passage after checking function of the check valve. CONSTITUTION: A compact pump has a pump chamber, inlet and outlet channels communicating with the pump chamber, and a pair of check valve units(8) placed between the pump chamber and the inlet and outlet channels. Each check valve unit has a thin film check valve membrane, and a check valve body(7) having a channel opened and closed by the check valve membrane due to pressure difference. The compact pump is manufactured easily by installing the check valve unit in the casing after checking function, and the reliability is improved by increasing efficiency.