Title:
PUMP DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/090292
Kind Code:
A1
Abstract:
The present invention relates to a pump device. This pump device comprises: a pump (2); an electric motor (3); a control unit (10) including a controller (20); a fan (28) that cools the control unit (10); a first temperature sensor (24) that measures the temperature inside the control unit (10); and a second temperature sensor (26) that measures the temperature of a power element (22a) of the inverter (22). The controller (20) activates the fan (28) when the temperature inside the control unit (10) is higher than a first threshold or when the temperature of the power element (22a) is higher than a second threshold, and deactivates the fan (28) when the temperature of the power element (22a) is lower than a third threshold or when the temperature inside the control unit (10) is lower than a fourth threshold.
Inventors:
KOMAI MASAKAZU (JP)
OZAWA TAKAHIDE (JP)
SASAKI TAKAHIKO (JP)
NISHIMURA KAZUMA (JP)
OZAWA TAKAHIDE (JP)
SASAKI TAKAHIKO (JP)
NISHIMURA KAZUMA (JP)
Application Number:
PCT/JP2016/075417
Publication Date:
June 01, 2017
Filing Date:
August 31, 2016
Export Citation:
Assignee:
EBARA CORP (JP)
International Classes:
H02M7/48; F04D15/00; H05K7/20
Foreign References:
| JP2005307784A | 2005-11-04 | |||
| JPH08284830A | 1996-10-29 | |||
| JP2010124009A | 2010-06-03 | |||
| JP2003293961A | 2003-10-15 |
Attorney, Agent or Firm:
WATANABE, Isamu et al. (JP)
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