Fedders Corporation

Milton M Kosfeld

Charles Louis Osterkorn

The flapper valve is to be utilized in a compressor of the type having a valve chamber adjacent a discharge or outlet port. The valve comprises a flexible valve member in the valve chamber which has a port closure at the front end thereof to seal the discharge port of the compressor. A backer plate is similarly received in the valve chamber and has one end in engagement with the rear end of the valve member to normally bias the port closure to a position wherein the discharge port of the compressor is closed. The valve member is provided with forwardly extending arms which cooperate with upturned ears on the backer plate to prevent longitudinal and lateral movement of the valve member. Accordingly, the valve member and backer plate need not be connected together prior to placement into the valve chamber. Alternatively, if the member and plate are connected together, their relative positions will be maintained even if the connection breaks.

Flapper valve for a rotary compressor

Liquid refrigerant is injected into the high-pressure side of a rotary compressor so as to cool the refrigerant being compressed to allow it to be useful in cooling the compressor motor. The injection port is located on the bottom face of the compressor chamber, within an area removed from the compressor chamber wall, immediately adjacent the compressor chamber discharge. The feed to the injection port is through a larger tube containing two non-connected capillaries, the first capillary being connected to the inlet of the tube and the second capillary being connected to the injection port. In this manner, a column of liquid remains in the second capillary. The combination of the placement of the injection port and the form of the inlet tubing to the injection port prevents liquid from being carried over into the suction side of the compressor, where efficiency and economy would be diminished, avoids the necessity for a check valve in the suction line to the compressor chamber, and allows for the parts of the compressor chamber to be used with varying compressor rollers without remachining.

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Coltsneck, NJ, United States of America

Milton M Kosfeld