Apparatus for preventing backflow of gas of scroll compressor
AssigneeLG Electronics Inc.
InventorTae-Hee Nam
Life of this patent
Estimating the term…
Abstract
An apparatus for preventing backflow of a gas of a scroll compressor includes: a hermetic container provided with a discharge pipe through which a gas is discharged; a fixed scroll fixedly coupled in the hermetic container; an orbiting scroll orbiting in meshing engagement with the fixed scroll to compress gas together with the fixed scroll; and a backflow preventing means for preventing backflow of a gas discharged through the discharge pipe. Therefore, a gas compressed by an orbiting movement of the fixed scroll and the orbiting scroll is smoothly discharged to the discharge pipe through the hermetic container during operation of the compressor, and the gas discharged to the discharge pipe is prevented from backflowing into the hermetic container when the operation is stopped.
Claims16
An apparatus for preventing backflow of a gas of a scroll compressor comprising:
- a hermetic container provided with a discharge pipe through which a gas is discharged;
- a fixed scroll fixedly coupled in the hermetic container;
- an orbiting scroll orbiting in interlocking with the fixed scroll to compress gas together with the fixed scroll;
- and
- a backflow preventing means for preventing backflow of a gas discharged through the discharge pipe;
- wherein the backflow preventing means comprises:
- a valve housing having an inner passage of a predetermined shape and fixedly coupled inside the hermetic container with its inner passage communicating with the discharge pipe;
- a check valve movably inserted in the valve housing, for opening or closing the inner passage by a pressure differential;
- wherein the valve housing comprises:
- a cylindrical portion formed as a cylindrical shape with certain length and inner diameter and coupled to a inner wall of the hermetic container at its one side;
- a covering portion for covering one side of the cylindrical portion;
- and
- a penetration hole penetratingly formed at the covering portion and opened or closed by the check valve;
- and
- a guide protrusion portion having certain height and length is formed at an inner circumferential surface of the cylindrical portion.
(canceled)
An apparatus for preventing backflow of a gas of a scroll compressor comprising:
- a hermetic container provided with a discharge pipe through which a gas is discharged;
- a fixed scroll fixedly coupled in the hermetic container;
- an orbiting scroll orbiting in interlocking with the fixed scroll to compress gas together with the fixed scroll;
- a backflow preventing means for preventing backflow of a gas discharged through the discharge pipe, wherein the backflow preventing means comprises:
- a valve housing having an inner passage of a predetermined shape and
- fixedly coupled inside the hermetic container with its inner passage communicating with the discharge pipe;
- and
- a check valve movably inserted in the valve housing, for opening or closing the inner passage by a pressure differential;
- an opening/closing portion having a predetermined area;
- and
- distance-maintaining portions extending from an outer circumferential surface of the opening/closing portion at a certain length in a bending manner, being in contact with an inner wall of the valve housing and maintaining a certain distance between the opening/closing portion and an inlet side of the discharge pipe.
An apparatus for preventing backflow of a gas of a scroll compressor comprising:
- a hermetic container provided with a discharge pipe through which a gas is discharged;
- a fixed scroll fixedly coupled in the hermetic container;
- an orbiting scroll orbiting in interlocking with the fixed scroll to compress gas together with the fixed scroll;
- a backflow preventing means for preventing backflow of a gas discharged through the discharge pipe;
- wherein a cover for covering the discharge opening of the fixed scroll is provided at an upper surface of the fixed scroll, thereby forming a chamber therein, the discharge pipe is coupled to the cover, communicating with the chamber, and the backflow preventing means is provided in the cover.
Dependencies are inferred from the claim text.