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US 9,178,401 B2Granted
Linear motor
AssigneeSanyo Denki Co., Ltd.
InventorsSatoshi Sugita, Yasushi Misawa, Shigenori Miyairi
Life of this patent
Estimating the term…
Abstract
An armature of a linear motor includes a plurality of cooling pipe storage holes formed along a longitudinal direction of a core, and a plurality of cooling pipes stored vertically in the cooling pipe storage holes and having a meander shape. The cooling pipes vertically adjacent to each other are arranged such that inlets and outlets of the cooling pipes are alternately connected in parallel to a refrigerant inlet and a refrigerant outlet in order to allow a refrigerant to flow in the reverse direction.
Claims10
A linear motor comprising:
- a field unit having a permanent magnet;
- and
- an armature provided opposite to the permanent magnet and having a coil, wherein the armature comprising:
- teeth that lay out and form a slot for storing the coil;
- a core that connects the teeth and closes the top end of the slot;
- and
- a plurality of cooling pipes vertically arranged in the core along a longitudinal direction and having a meander shape, wherein
- the cooling pipes vertically adjacent to each other are arranged such that an inlet and an outlet of each of the cooling pipes are alternately connected in parallel to a refrigerant inlet and a refrigerant outlet, in order that a flow direction of the refrigerant becomes reverse to each other;
- the core is formed with a plurality of cooling pipe storage holes for storing the cooling pipes along the longitudinal direction of the core, and wherein
- the cross-sectional shape of the cooling pipe storage hole is a rectangle with four arc-like corners.
7 more elements
A linear motor, comprising:
- a field unit having a permanent magnet;
- an armature provided opposite to the permanent magnet and having a coil, wherein the armature includes:
- teeth that lay out and form a slot for storing the coil;
- a core that connects the teeth and closed a top end of the slot;
- a plurality of cooling pipes vertically arranged in the core along a longitudinal direction and having a meander shape;
- wherein:
- the cooling pipes vertically adjacent to each other are arranged such than an inlet and an outlet of each of the cooling pipes are alternatively connected in parallel to a refrigerant inlet and a refrigerant outlet, such that a flow direction of refrigerant becomes reverse to each other;
- the core is formed with a plurality of cooling pipe storage holes for storing the cooling pipes along the longitudinal direction of the core;
- and
- a cross-sectional shape of the cooling pipe stores holes is along a part of an outer peripheral surface of at least one cooling pipe of the cooling pipes.
7 more elements
Dependencies are inferred from the claim text.