US 8,523,015 B2 · Reciprocating pump with reduced noise level

Abstract

The present invention is directed to a reciprocating motor pump (1) suitable to generate compressed gas with a reduced noise level of at most 55 dB, wherein said pump (1) includes a pump casing comprising:—a gas inlet nozzle (3);—a gas chamber;—a cylinder chamber (4) comprising a piston (5);—an inlet valve (7);—an outlet valve (8); and—a gas outlet port (9); wherein gas enters the gas chamber (2) through a gas inlet nozzle—(3) of said gas chamber (2) and then flows from said gas chamber (2) to said cylinder chamber (2) to said cylinder chamber (4) through an inlet valve (7) of said cylinder chamber (4), whereby the ratio of the diameter of the opening of the gas passage of said inlet nozzle (3) to the diameter of the opening of the gas passage of said inlet valve (7) is 1:15 to 1:5.

Claims22

Dependent claims

A reciprocating motor pump suitable to generate compressed gas with a reduced noise level, said pump includes a pump casing comprising:

a wall;
a gas chamber formed above the wall;
a cylinder chamber formed below the wall and comprising a piston, an inner volume of the gas chamber being larger than a maximum stroke volume of the cylinder chamber;
an inlet valve and an outlet valve formed in the wall;
a gas inlet nozzle positioned in the gas chamber;
and
a gas outlet port positioned in the gas chamber and coupled to the outlet valve,
gas enters the gas chamber through the gas inlet nozzle and then flows from said gas chamber to said cylinder chamber through the inlet valve, the ratio of a diameter of an opening of a gas passage of said inlet nozzle to a diameter of an opening of gas passage of said inlet valve is in the range of 1:15 to 1:5 and the noise level generated by the motor pump is at most 55 dB.

5 more elements

Dependencies are inferred from the claim text.

Reciprocating pump with reduced noise level

Life of this patent

Reciprocating pump with reduced noise level

Life of this patent

Abstract

Claims22