Patent ID: 9375155
Filing Date: 2016-06-28
CPC Classification: A61B,F04B

Claim Text:
1. A diaphragm pump for transporting a gas in accordance with change in volume of a pump chamber, comprising: an exhaust valve for permitting flow of the gas that flows out of the pump chamber and prohibiting flow thereof in a reverse direction; and a gas gathering body, the gas gathering body including an air chamber being formed therein in which the gas that has flowed out of the pump chamber through the exhaust valve flows, an exhaust port through which the gas is exhausted via an exhaust path to outside of the diaphragm pump, and a partition wall portion for partition between the air chamber and the exhaust path being formed by a part of the gas gathering body projecting inward, wherein in the partition wall portion, a through hole portion for communication between the air chamber and the exhaust path is formed, wherein the through hole portion restricts a flow rate of the gas that flows from the air chamber to the exhaust port, and wherein the through hole is formed in a central portion of the partition wall portion.