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US 7,614,856 B2Granted
Linear motor, and linear compressor using the same
AssigneePanasonic Corporation
InventorsKo Inagaki, Ichiro Morita
Life of this patent
Estimating the term…
Abstract
A linear motor of the present invention has: a stator having a stationary iron core and a magnet wire; a mover having a moving iron core and a magnet; and a plate-shaped elastic member for supporting the mover in a manner to rock in the rocking directions. This construction eliminates a sliding portion for supporting the mover so that it can reduce the loss, which might otherwise accompany the reciprocation of the mover. Moreover, a linear compressor using this linear motor is high in efficiency and reliability.
Claims17
A linear compressor comprising:
- a linear motor including
- a stator having a stationary iron core and a magnet wire retained on said stationary iron core,
- a mover disposed at an inner side of said stator, said mover including a moving iron core and a magnet, and
- a plate-shaped elastic member supporting said mover such that said mover is movable in rocking directions;
- a cylinder disposed with a longitudinal axis substantially parallel to the rocking directions of said mover;
- a piston reciprocally disposed in said cylinder and connected to said mover;
- a closed casing, said closed casing housing each of said linear motor, said cylinder, and said piston therein;
- and
- a dynamic absorber mounted in said closed casing, said dynamic absorber including a spring and a weight attached to said spring, said spring being elastically deformable in the rocking directions of said mover,
- wherein said closed casing has an inner periphery formed in a generally cylindrical shape, and
- wherein said weight is formed into one of a generally annular shape and a generally arcuate shape along said inner periphery of said closed casing.
8 more elements
A linear compressor comprising:
- a linear motor including
- a stator having a stationary iron core and a magnet wire retained on said stationary iron core,
- a mover disposed at an inner side of said stator, said mover including a moving iron core and a magnet, and
- a plate-shaped elastic member supporting said mover such that said mover is movable in rocking directions;
- a cylinder disposed with a longitudinal axis substantially parallel to the rocking directions of said mover;
- and
- a piston reciprocally disposed in said cylinder and connected to said mover;
- wherein said plate-shaped elastic member constitutes a first plate-shaped elastic member;
- wherein a second plate-shaped elastic member is provided supporting said mover at a side of said mover opposite said first plate-shaped elastic member such that said mover is movable in the rocking directions;
- wherein said first plate-shaped elastic member has a plurality of first arm portions which curve radically inward in a first direction from a first point at which the first arm portions are mounted on the mover, to a second point at which the first arm portions are mounted on the stator;
- and
- wherein the second plate-shaped elastic member has a plurality of second arm portions which curve radically inward in a second direction from a first point at which the second arm portions are mounted on the mover, to a second point at which the second arm portions are mounted on the stator;
- and
- wherein said first direction of said first arm portions is the same as said second direction of said second arm portions.
11 more elements
A linear compressor comprising:
- a linear motor including
- a stator having a stationary iron core and a magnet wire retained on said stationary iron core,
- a mover disposed at an inner side of said stator, said mover including a moving iron core and a magnet, and
- a plate-shaped elastic member supporting said mover such that said mover is movable in rocking directions;
- a cylinder disposed with a longitudinal axis substantially parallel to the rocking directions of said mover;
- a piston reciprocally disposed in said cylinder and connected to said mover;
- a first coil spring having a first end connected to a first side of said mover;
- a second coil spring having a first end connected to a second side of said mover, said second side of said mover being disposed opposite said first side of said mover;
- a first spring holder holding a second end of said first coil spring, said first spring holder being fixed to said stator;
- and
- a second spring holder holding a second end of said second coil spring, said second spring holder being fixed to said stator.
8 more elements
Dependencies are inferred from the claim text.