Patent ID: 6608407
Filing Date: 2003-08-19
Classification: H02K

Abstract:
A linear motor armature comprising:a front module including an inlet connection to the outside of the armature, an outlet connection to the outside of the armature, a first fluid passage one end of which is adapted to receive the inlet connection and the other end of which is open to a back edge of the front module, and a fifth fluid passage one end of which is adapted to receive the outlet connection and the other end of which is open at the back edge of the front module; at least two intermediate modules, each intermediate module including a second fluid passage one end of which is open at a front edge of the intermediate module and the other end of which is open at a back edge of the intermediate module, a fourth fluid passage one end of which is open at the front edge of the intermediate module and the other end of which is open at the back edge of the intermediate module, a coil, a core around which the coil is wound, and a flat cooling tube partly forming one of the second and fourth fluid passages and having a U-shaped fold into which the coil can be fit; a back module including a third fluid passage both ends of which are open at a front edge of the back module; and connecting means for detachably connecting the front module, the at least two intermediate module and the back module in series; wherein when the front module, the at least two intermediate modules and the back module are connected in series, coolant can be circulated in the first fluid passage, the second fluid passages, the third fluid passage, the fourth fluid passages and fifth fluid passage in order.