Compressor
AssigneeSamsung Electronics Co., Ltd.
InventorJung Hyoun Kim
Life of this patent
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Abstract
A compressor may include a hermetic case to store oil in a lower portion thereof, a compression mechanism part to compress a refrigerant, a power train part to generate a driving force, a rotational shaft to transmit the driving force generated from the power train part to the compression mechanism part and including a hollow portion and a female screw part formed at the hollow portion, and an oil pumping member inserted into the hollow portion of the rotational shaft and including an oil pumping part which moves the oil stored in the lower portion of the hermetic case up and a male screw part which is coupled to the female screw part of the rotational shaft. Since the oil pumping member and the rotational shaft are firmly coupled to each other, the reliability of the oil supplying is improved.
Claims14
A compressor comprising:
- a hermetic case to store oil in a lower portion thereof;
- a compression mechanism part to compress a refrigerant;
- a power train part to generate a driving force;
- a rotational shaft which rotates to transmit the driving force generated by the power train part to the compression mechanism part, the rotational shaft comprising
- an eccentric part coupled to the compression mechanism,
- a hollow portion including
- a lower hollow portion, and
- an upper hollow portion having a smaller diameter than the lower hollow portion,
- a female screw part formed in the upper hollow portion, and
- an air passage coupled to the upper hollow portion, above the female screw part, and extending through the rotational shaft to a top surface of the rotational shaft and at an inclination to the top surface of the rotational shaft, to discharge air in the upper hollow portion to an outside of the rotational shaft above the top surface of the rotational shaft;
- and
- an oil pumping member inserted into the lower hollow portion and the upper hollow portion, and comprising
- an oil pumping part disposed in the lower hollow portion, and
- a male screw part having a smaller diameter than the oil pumping part,
- and configured so that, when the rotational shaft rotates, the oil pumping part rotates to thereby move upward the oil stored in the lower portion of the hermetic case into the lower hollow portion and the male screw part tightens into the female screw part of the rotational shaft,
- wherein the rotational shaft further comprises:
- a spiral groove formed in the outer circumferential surface of the rotational shaft,
- a lower connection passage provided below the female screw part and extending through the rotational shaft to connect the lower hollow portion and the spiral groove so that, when the rotational shaft rotates, the oil moved upward into the lower hollow portion by the oil pumping part is guided from the lower hollow portion to the spiral groove and moves upward along the spiral groove,
- an oil supplying passage extending in the rotational shaft to the eccentric part and being inclined with respect to the eccentric part, and
- an upper connection passage connecting the spiral groove and the oil supplying passage,
- wherein the oil supplying passage and the upper connection passage are thereby configured to guide the oil moved upward along the spiral groove, from the spiral groove to the eccentric part so as to lubricate and cool the compression mechanism part.
Dependencies are inferred from the claim text.