Title:
REFRIGERANT CIRCULATION DEVICE FOR MOTOR
Document Type and Number:
WIPO Patent Application WO/2018/235143
Kind Code:
A1
Abstract:
This refrigerant circulation device 1 for a motor cools the motor 7 by circulating a refrigerant in the motor 7, the refrigerant circulation device 1 comprising: a mechanical pump 2 connected mechanically to the motor 7 and configured so that the direction of discharge of the refrigerant is switched depending on the direction of rotation of the motor 7; and a passage switching mechanism 3 having connected thereto a supply passage 56 for supplying the refrigerant to the motor 7, the passage switching mechanism 3 also having connected thereto an introduction passage 57 into which the refrigerant discharged from the motor 7 is introduced, the passage switching mechanism 3 further having connected thereto a discharge passage 21 through which the refrigerant discharged from the mechanical pump 2 when the motor 7 is rotated in the forward direction flows, the passage switching mechanism 3 still further having connected thereto a suction passage 22 through which the refrigerant sucked in by the mechanical pump 2 when the motor 7 is rotated in the forward direction flows, the passage switching mechanism 3 being configured so that, when the motor 7 is rotated in the forward direction, the passage switching mechanism 3 connects the discharge passage 21 and the supply passage 56 and also connects the suction passage 22 and the introduction passage 57, and so that, when the motor 7 is rotated in the reverse direction, the passage switching mechanism 3 connects the suction passage 22 and the supply passage 56 and also connects the discharge passage 21 and the introduction passage 57.
Inventors:
MANABE TOMOYUKI (JP)
Application Number:
PCT/JP2017/022577
Publication Date:
December 27, 2018
Filing Date:
June 19, 2017
Export Citation:
Assignee:
NISSAN MOTOR (JP)
International Classes:
H02K9/19
Foreign References:
JP2008087713A | 2008-04-17 | |||
JP5092919B2 | 2012-12-05 | |||
JP2013208040A | 2013-10-07 |
Attorney, Agent or Firm:
GOTOH & PARTNERS (JP)
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