Hermetic compressor
First Claim
1. A hermetic compressor, comprising:
- a hermetic casing;
a frame provided in the hermetic casing;
a drive unit provided in a lower portion of the frame;
a compression unit provided on an upper portion of the frame;
a rotating shaft vertically installed in the frame to transmit a rotating force of the drive unit to the compression unit, with an eccentric part provided on an upper end of the rotating shaft and coupled to the compression unit; and
an oil feed unit provided on the rotating shaft to feed oil from a bottom of the hermetic casing to a plurality of drive parts, the oil feed unit comprising;
a first oil pickup unit provided on a lower end of the rotating shaft to lift the oil upward from the bottom of the hermetic casing;
a first oil feed path provided in the rotating shaft above the first oil pickup unit while being eccentric from a central axis of the rotating shaft;
a spiral oil feed groove provided around an outer surface of the rotating shaft above the first oil feed path and communicating with the first oil feed path;
a second oil feed path provided in the eccentric part of the rotating shaft and communicating with the spiral oil feed groove; and
a second oil pickup unit provided in the first oil feed path to increase an oil lift force.
1 Assignment
0 Petitions
Accused Products
Abstract
A hermetic compressor provided with an improved oil feed structure to efficiently feed lubricating oil to a plurality of drive parts. The hermetic compressor includes a hermetic casing, a frame provided in the hermetic casing, a drive unit provided in a lower portion of the frame, a compression unit provided on an upper portion of the frame, a rotating shaft vertically installed in the frame to transmit a rotating force of the drive unit to the compression unit, with an eccentric part provided on an upper end of the rotating shaft and coupled to the compression unit, and an oil feed unit provided on the rotating shaft to feed oil from a bottom of the hermetic casing to the plurality of drive parts. The oil feed unit includes a first oil pickup unit provided on a lower end of the rotating shaft to lift the oil upward from the bottom of the hermetic casing, a first oil feed path provided in the rotating shaft above the first oil pickup unit while being eccentric from a central axis of the rotating shaft, a spiral oil feed groove provided around the rotating shaft above the first oil feed path and communicating with the first oil feed path, a second oil feed path provided in the eccentric part and communicating with the spiral oil feed groove, and a second oil pickup unit provided in the first oil feed path to increase an oil lift force.
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Citations
13 Claims
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1. A hermetic compressor, comprising:
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a hermetic casing;
a frame provided in the hermetic casing;
a drive unit provided in a lower portion of the frame;
a compression unit provided on an upper portion of the frame;
a rotating shaft vertically installed in the frame to transmit a rotating force of the drive unit to the compression unit, with an eccentric part provided on an upper end of the rotating shaft and coupled to the compression unit; and
an oil feed unit provided on the rotating shaft to feed oil from a bottom of the hermetic casing to a plurality of drive parts, the oil feed unit comprising;
a first oil pickup unit provided on a lower end of the rotating shaft to lift the oil upward from the bottom of the hermetic casing;
a first oil feed path provided in the rotating shaft above the first oil pickup unit while being eccentric from a central axis of the rotating shaft;
a spiral oil feed groove provided around an outer surface of the rotating shaft above the first oil feed path and communicating with the first oil feed path;
a second oil feed path provided in the eccentric part of the rotating shaft and communicating with the spiral oil feed groove; and
a second oil pickup unit provided in the first oil feed path to increase an oil lift force. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A hermetic compressor, comprising:
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a hermetic casing;
a frame provided in the hermetic casing;
a drive unit provided in a lower portion of the frame;
a compression unit provided on an upper portion of the frame;
a rotating shaft vertically installed in the frame to transmit a rotating force of the drive unit to the compression unit, with an eccentric part provided on an upper end of the rotating shaft and coupled to the compression unit; and
an oil feed unit provided on the rotating shaft to feed oil from a bottom of the hermetic casing to a plurality of drive parts, the oil feed unit comprising;
a first oil pickup unit provided on a lower end of the rotating shaft to lift the oil upward from the bottom of the hermetic casing;
a first oil feed path provided in the rotating shaft above the first oil pickup unit while being eccentric from a central axis of the rotating shaft;
a spiral oil feed groove provided around an outer surface of the rotating shaft above the first oil feed path and communicating with the first oil feed path; and
a second oil feed path provided in the eccentric part of the rotating shaft and communicating with the spiral oil feed groove, the second oil feed path being inclined in the eccentric part so that a central axis of the second oil feed path is diverged from the central axis of the rotating shaft in a direction from a lower end to an upper end of the eccentric part. - View Dependent Claims (12, 13)
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Specification