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US 11,692,547 B2Granted
Hermetic compressor having oil guide that surrounds rotating shaft
AssigneeLG Electronics Inc.
InventorsJunghoon Park, Sungyong Ahn, Taekyoung Kim, Seheon Choi
Life of this patent
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Abstract
A hermetic compressor according to the present disclosure may include an oil guide disposed on a rotating shaft between a driving motor and a main frame, the oil guide may include an oil block surrounding a main bearing surface between the main frame and the rotating shaft, and one end of the oil block may radially overlap a shaft support protrusion of the main frame. This can suppress oil returned after lubricating a compression unit from being scattered, thereby reducing a leakage of the oil to outside of a casing through a refrigerant discharge pipe.
Claims19
A hermetic compressor, comprising:
- a casing having an inner space defined therein and hermetically sealed;
- a driving motor disposed in the inner space of the casing;
- a rotating shaft coupled to the driving motor;
- a compression unit disposed in the inner space of the casing and coupled to the rotating shaft;
- a main frame disposed between the driving motor and the compression unit, the main frame comprising a shaft support protrusion that has an annular shape, that extends toward the driving motor, and that supports the rotating shaft;
- a refrigerant suction pipe that passes through the casing and is coupled to the compression unit, the refrigerant suction pipe being in fluid communication with the compression unit;
- a refrigerant discharge pipe that passes through the casing and is in fluid communication with the inner space of the casing;
- a balance weight disposed at the rotating shaft and disposed between the driving motor and the main frame;
- and
- an oil guide that surrounds the rotating shaft and is disposed between the driving motor and the main frame,
- wherein the main frame and the rotating shaft are spaced apart from each other in a radial direction to thereby define a main bearing surface therebetween,
- wherein the oil guide is disposed radially outward relative to the shaft support protrusion and surrounds the main bearing surface,
- wherein the oil guide comprises an oil block that is fixed to the balance weight and extends toward the main frame, the oil block surrounding the main bearing surface,
- wherein the balance weight comprises:
- a fixed mass portion that has an annular shape and is fixed to the rotating shaft, and
- an eccentric mass portion that extends from the fixed mass portion in the radial direction such that a weight of the balance weight is eccentric in the radial direction,
- wherein the oil block is coupled to the eccentric mass portion, and
- wherein an inner diameter of the oil block is less than an outer diameter of the eccentric mass portion and greater than an outer diameter of the fixed mass portion.
15 more elements
A hermetic compressor, comprising:
- a casing having an inner space defined therein and hermetically sealed;
- a driving motor disposed in the inner space of the casing;
- a rotating shaft coupled to the driving motor;
- a compression unit disposed in the inner space of the casing and coupled to the rotating shaft;
- a main frame disposed between the driving motor and the compression unit, the main frame comprising a shaft support protrusion that has an annular shape, that extends toward the driving motor, and that supports the rotating shaft;
- a refrigerant suction pipe that passes through the casing and is coupled to the compression unit, the refrigerant suction pipe being in fluid communication with the compression unit;
- a refrigerant discharge pipe that passes through the casing and is in fluid communication with the inner space of the casing;
- and
- a balance weight disposed at the rotating shaft and disposed between the driving motor and the main frame;
- an oil guide that surrounds the rotating shaft and is disposed between the driving motor and the main frame,
- wherein the main frame and the rotating shaft are spaced apart from each other in a radial direction to thereby define a main bearing surface therebetween,
- wherein the oil guide is disposed radially outward relative to the shaft support protrusion and surrounds the main bearing surface,
- wherein the oil guide comprises:
- an oil cap that accommodates the balance weight and extends toward the driving motor, and
- an oil block that extends toward the main frame and surrounds the main bearing surface,
- wherein the oil cap comprises:
- an oil guide portion that accommodates the balance weight, and
- a cap fixing portion that is bent from an upper end of the oil guide portion and fixed to the balance weight, the oil block extending from the cap fixing portion, and
- wherein the oil block is bent radially inward relative to an inner circumference of the cap fixing portion and axially extends toward the main frame.
16 more elements
A hermetic compressor, comprising:
- a casing having an inner space defined therein and hermetically sealed;
- a driving motor disposed in the inner space of the casing;
- a rotating shaft coupled to the driving motor;
- a compression unit disposed in the inner space of the casing and coupled to the rotating shaft;
- a main frame disposed between the driving motor and the compression unit, the main frame comprising a shaft support protrusion that has an annular shape, that extends toward the driving motor, and that supports the rotating shaft;
- a refrigerant suction pipe that passes through the casing and is coupled to the compression unit, the refrigerant suction pipe being in fluid communication with the compression unit;
- a refrigerant discharge pipe that passes through the casing and is in fluid communication with the inner space of the casing;
- a balance weight disposed at the rotating shaft and disposed between the driving motor and the main frame;
- and
- an oil guide that surrounds the rotating shaft and is disposed between the driving motor and the main frame,
- wherein the main frame and the rotating shaft are spaced apart from each other in a radial direction to thereby define a main bearing surface therebetween,
- wherein the oil guide is disposed radially outward relative to the shaft support protrusion and surrounds the main bearing surface,
- wherein the oil guide comprises:
- an oil cap that accommodates the balance weight and extends toward the driving motor, and
- an oil block that extends toward the main frame and surrounds the main bearing surface,
- wherein the oil cap comprises:
- an oil guide portion that accommodates the balance weight, and
- a cap fixing portion that is bent from an upper end of the oil guide portion and fixed to the balance weight, and
- wherein the oil block is disposed on an upper surface of the cap fixing portion and coupled to the balance weight and the cap fixing portion.
16 more elements
Dependencies are inferred from the claim text.