Diaphragm pump
AssigneeOkenseiko Co., Ltd.
InventorsKazuki Itahara, Fumitaka Takamizawa
Life of this patent
Estimating the term…
Abstract
A diaphragm pump includes a driving mechanism and a counting sensor. The driving mechanism includes an arm portion attached to a deformed portion that forms a pump chamber, and a crank that rotates integrally with the rotating shaft of a motor, in which the rotation of the crank is converted into a reciprocal motion to make the arm portion reciprocally move. The counting sensor is configured to use the arm portion as a detection target and alternately switch between a detection state and a non-detection state as the arm portion makes the reciprocal motion. It is therefore possible to provide a diaphragm pump capable of detecting a discharge flow rate using an inexpensive ready-made motor.
Claims8
A diaphragm pump comprising:
- a diaphragm including a deformed portion capable of being deformed into a cup shape;
- a pump main body configured to close an opening portion of the deformed portion and form a pump chamber in cooperation with the deformed portion;
- a driving mechanism including a reciprocal motion portion attached to the deformed portion and an input portion that rotates integrally with a rotating shaft of a motor, in which a rotation of the input portion is converted into a reciprocal motion in an axial direction of the rotating shaft, and the reciprocal motion portion reciprocally moves;
- a pump mechanism configured to suck a fluid into the pump chamber when a capacity of the pump chamber increases, and discharges the fluid in the pump chamber when the capacity of the pump chamber decreases;
- and
- a sensor configured to use the reciprocal motion portion as a detection target and alternately switch between a detection state and a non-detection state as the reciprocal motion portion makes a reciprocal motion.
A diaphragm pump comprising:
- a diaphragm including a deformed portion capable of being deformed into a cup shape;
- a pump main body configured to close an opening portion of the deformed portion and form a pump chamber in cooperation with the deformed portion;
- a crank configured to rotate integrally with a rotating shaft of a motor;
- an arm attached to the deformed portion and reciprocally moved in an axial direction of the rotating shaft in accordance with a rotation of the crank;
- a suction through hole formed in the pump main body and configured to suck a fluid into the pump chamber as a capacity of the pump chamber increases;
- a discharge through hole formed in the pump main body and configured to discharge the fluid in the pump chamber as the capacity of the pump chamber decreases;
- and
- a sensor configured to use the arm as a detection target and alternately switch between a detection state and a non-detection state as the arm makes a reciprocal motion.
Dependencies are inferred from the claim text.