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US 11,060,523 B1Granted
Vacuum pump silencer
AssigneeAirtech Group, Inc.
InventorsVincent Imbornone, Thomas Stergioulas, Raphael Sagher
Life of this patent
Estimating the term…
Abstract
A silencer for vacuum pumps which allows only for unidirectional flow and which reduces the noises caused by the air discharged at the exhaust of said pump. The silencer features baffles to divert and disrupt the flow and an umbrella check valve to ensure the unidirectionality of the discharge flow.
Claims17
A silencer for reducing the noise generated by the fluid discharge at the discharge port of a vacuum pump, comprising:
- a housing having an inlet port and outlet port for connection, respectively, to the exhaust of the vacuum pump and to a system port to which the latter is connectable and an internal hollow chamber extending between said inlet and outlet ports;
- a single separator wall disposed between said inlet and outlet ports and dividing said internal hollow chamber into a single front baffle chamber and a single rear expansion chamber, wherein said separator wall has a multiplicity of spaced-apart throughbores extending therethrough to allow for fluid flow from said front baffle chamber to said rear expansion chamber;
- means for obstructing and diverting the discharge flow mounted in said front baffle chamber, said means for obstructing and diverting comprising an elongated tubular perforated baffle mounted between said inlet port and said separator wall and causing the fluid flow to be successively diverted twice by a generally 90° turn to enable the fluid flow to enter said multiplicity of throughbores in said separator wall;
- and
- an umbrella-type check valve for obstructing the discharge flow in said rear expansion chamber mounted between said separator wall and said outlet port.
2 more elements
A silencer for reducing the noise generated by the fluid discharge at the discharge port of a vacuum pump, comprising:
- a housing having an inlet port and outlet port for connection, respectively, to the exhaust of the vacuum pump and to a system port to which the latter is connectable and an internal hollow chamber extending between said inlet and outlet ports;
- a separator wall disposed between said inlet and outlet ports and dividing said internal hollow chamber into a front baffle chamber and a rear expansion chamber, wherein said separator wall has a plurality of throughbores extending therethrough to allow for fluid flow from said front baffle chamber to said rear expansion chamber;
- means for obstructing the discharge flow mounted in said front baffle chamber, said means for obstructing being mounted between said inlet port and said separator wall comprising an elongated tubular perforated baffle having a rear end abutting said separator wall, and a slotted disc located in said front baffle chamber adjacent to said inlet port which abuts a front end of said elongated tubular perforated baffle;
- and
- an umbrella-type check valve for obstructing the discharge flow mounted in said rear expansion chamber.
2 more elements
Dependencies are inferred from the claim text.