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US 9,429,150 B2Granted
Linear compressor
AssigneeHaier US Appliances Solutions, Inc.
InventorsThomas R. Barito, Gregory William Hahn, Srinivas Mallampalli
Life of this patent
Estimating the term…
Abstract
A linear compressor is provided. The linear compressor includes a machined spring. An inner back iron assembly is fixed to the machined spring at a middle portion of the machined spring. A driving coil is operable to move the inner back iron assembly in order to reciprocate a piston within a chamber of a cylinder assembly.
Claims17
A linear compressor, comprising:
- a casing extending between a first end portion and a second end portion, the casing having a cylinder assembly positioned at the second end portion of the casing, the cylinder assembly defining a chamber;
- a piston slidably received within the chamber of the cylinder assembly;
- a driving coil mounted to the casing;
- an inner back iron assembly positioned in the driving coil, the inner back iron assembly having an outer surface;
- a magnet mounted to the inner back iron assembly at the outer surface of the inner back iron assembly such that the magnet faces the driving coil;
- and
- a machined spring comprising
- a first cylindrical portion mounted to the casing at the first end portion of the casing;
- a second cylindrical portion positioned within and fixed to the inner back iron assembly;
- a first helical portion extending between and coupling the first and second cylindrical portions together;
- a third cylindrical portion mounted to the casing at the second end portion of the casing;
- and
- a second helical portion extending between and coupling the second and third cylindrical portions together,
- a piston flex mount positioned in the machined spring, the piston flex mount coupled to the machined spring at the second cylindrical portion of the machined spring;
- and
- a flexible coupling extending between the piston flex mount and the piston,
- wherein a magnetic field of the driving coil engages the magnet in order to move the inner back iron assembly in the driving coil and the piston within the chamber of the cylinder assembly during operation of the driving coil.
14 more elements
A linear compressor defining a radial direction, a circumferential direction and an axial direction, the linear compressor comprising:
- a casing extending between a first end portion and a second end portion along the axial direction, the casing having a cylinder assembly positioned at the second end portion of the casing, the cylinder assembly defining a chamber;
- a piston received within the chamber of the cylinder assembly such that the piston is slidable along a first axis within the chamber of the cylinder assembly;
- a machined spring extending between the first and second end portions of the casing;
- an inner back iron assembly extending about the machined spring along the circumferential direction, the inner back iron assembly fixed to the machined spring at a middle portion of the machined spring;
- a driving coil extending about the inner back iron assembly along the circumferential direction, the driving coil operable to move the inner back iron assembly along a second axis during operation of the driving coil, the first and second axes being substantially parallel to the axial direction;
- a magnet mounted to the inner back iron assembly such that the magnet is spaced apart from the driving coil by an air gap along the radial direction;
- a piston flex mount positioned in the machine spring, the piston flex mount coupled to the machined spring at the middle portion of the machined spring;
- and
- a flexible coupling extending between the piston flex mount and the piston along the axial direction,
- wherein a magnetic field of the driving coil engages the magnet in order to move the inner back iron assembly along the second axis during operation of the driving coil.
7 more elements
Dependencies are inferred from the claim text.