Hermetic compressor and fridge-freezer
AssigneePanasonic Corporation
InventorMakoto Katayama
Life of this patent
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Abstract
A hermetic compressor includes an airtight container containing lubricating oil and having a compression element and a motor element. The compression element compresses a refrigerant by being driven by the motor element. The compression element includes a crankshaft extending in a vertical direction and having a main shaft and an eccentric part; a block forming a compression space; a piston having a cylindrical shape and reciprocating in the compression space; and a connecting rod for transmitting the rotation of the eccentric part to the piston. The piston has its center of gravity on either the upper side or the lower side in the vertical direction with respect to a plane which passes through the central axis of the piston and is perpendicular to the crankshaft.
Claims9
A hermetic compressor, comprising:
- an airtight container containing lubricating oil and having a compression element and a motor element, the compression element compressing a refrigerant by being driven by the motor element, the compression element including:
- a crankshaft extending in a vertical direction, the crankshaft having a main shaft and an eccentric part;
- a block forming a compression space;
- a piston having a cylindrical shape, the piston reciprocating in the compression space;
- and
- a connecting rod for transmitting rotation of the eccentric part to the piston, wherein
- the piston has a center of gravity on one of an upper side and a lower side in the vertical direction with respect to a plane, the plane passing through a central axis of the piston and being perpendicular to the crankshaft.
Dependencies are inferred from the claim text.