Abstract:
In a linear motor, a can has a two-layer structure including an inner can 2 and an outer can 3 , and an inner passage 7 formed between an armature winding 9 and the inner can 2 and an outer passage 8 formed between the inner can 2 and the outer can 3 are constituted by each can. Communicating portions 7 A and 8 A for causing the inner passage 7 and the outer passage 8 to communicate with each other are provided in the vicinity of a refrigerant supply port 5 in each of the cans 2 and 3 in such a manner that a refrigerant supplied from the refrigerant supply port 5 branches into the inner passage 7 and the outer passage 8 and thus flows. Consequently, it is possible to obtain a linear motor armature and a linear motor having a high cooling capability which can prevent the deformation of the can by using a conventional inactive refrigerant to improve the passage for the refrigerant.
Abstract:
PROBLEM TO BE SOLVED: To provide an electric machine for transport fluid via a pipeline. SOLUTION: A stator (122) for the electric machine includes teeth (206), which are assembled with a plurality of stack laminated layers (232, 234), fitted to a cylindrical protective surface and thereby forming a plurality of slots (208). The stator, furthermore, includes armature windings (242, 244) assembled in the teeth, by inserting the component of the armature windings from the outer side position of the teeth into a plurality of stator slots with a method for readily minimizing the possibility of distortions of the coils. The armature windings include a plurality of coils having respective end windings. The stator, furthermore, includes a segmented yoke (204) inserted into the surrounding of the armature windings by using a method for readily minimizing the possibility of disturbing the end windings of the coils. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To make a supply part and its vicinity visible, related to an air cooling motor of which a rotating shaft comprises a through hole which a fluid flows. SOLUTION: A rotary joint (fluid supply part) 3 is provided on the rear side of a motor body 1 of which a rotating shaft comprises a through hole 10, through a rotary joint fitting housing 2. A fluid is fed into the rotary joint 3 through a hose 11. Cooling air channel 13 is provided to an appropriate point of the motor body 1. The rotary joint 3 is surrounded with a tubular member 20 fitted detachably, and a cooling air flows from the cooling air channel 13 to a cooling fan 4 through the inside of the tubular member 20. A part of the tubular member 20 is provided with a window (abcd) stopped with a translucent member 21 with the rotary joint 3 and its vicinity visible from outside. Breakage or leakage of fluid of the rotary joint 3 is found in an early stage. A cooling air channel may be disposed inside the tubular member with the window of the tubular member as an opening for ventilation. COPYRIGHT: (C)2004,JPO