Whirlpool S.a.

Edmar Baars

Egidio Berwanger

Ingwald Vollrath

Edson Correa Miguel

Humberto Ferreira Da Câmara

Egídio Berwanger

Humberto Ferreira Da Cámara

A system for actuation in an admission valve of a gas compressor including an admission valve being configured to allow the input of gas inside the cylinder upon the axial movement of the piston in a first axial direction; and a discharge valve configured to allow the output of gas from inside the cylinder upon the axial movement of the piston in a second axial direction opposite to the first axial direction. The system includes at least one actuator element, operatively associated with the admission valve, capable of keeping the admission valve open when the electric motor stops and starts-up. The actuator element is also capable of allowing opening and closing of the admission valve upon the regime of work of the electric motor. The present development also refers to refrigeration equipment which includes the above-mentioned gas compressor.

Valve actuation system for a suction valve of a gas compressor for refrigeration equipment

Resonator arrangement in an acoustic muffler for a refrigeration compressor having a shell (), inside which is mounted an acoustic muffler comprising a hollow body () defining at least one dampening chamber (), which carries a gas inlet duct () and a gas outlet duct (), each presenting a respective length and having a respective wall thickness, at least one of the gas inlet and gas outlet ducts () carrying, extending along at least part of its length, a respective plurality of tube type resonant ducts (), each resonant duct () presenting a first end (), open to the interior of the respective gas duct () and a second end (), opposed to and spaced from the first end (), each said resonant duct () being dimensioned to present a determined length and a determined diameter, which are calculated to define a certain reactive impedance and a certain dissipative impedance for the acoustic muffler, in a determined frequency band.

Resonator arrangement in an acoustic muffler for a refrigeration compressor

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Edmar Baars