Refrigeration – Structural installation – With electrical component cooling
Reexamination Certificate
2005-05-10
2005-05-10
Norman, Marc (Department: 3744)
Refrigeration
Structural installation
With electrical component cooling
C062S228500, C062S230000
Reexamination Certificate
active
06889516
ABSTRACT:
A cooling system for a motor is prevented from exhibiting a thermal fatigue failure due to a temperature cycle. The operation or stopping of the cooling motor fan6of the forced cooling system is controlled using the difference between the temperature thereof and the operation start temperature Tis of the power converter3. Thus expansion of the temperature range is suppressed.
REFERENCES:
patent: 6511295 (2003-01-01), Suitou et al.
patent: 6523361 (2003-02-01), Higashiyama
patent: 20020073726 (2002-06-01), Hasebe et al.
patent: 20030230101 (2003-12-01), Iritani et al.
Doi Hiroaki
Hamada Haruki
Hayashi Masaaki
Saito Ryuichi
Sasaki Kaname
Antonelli Terry Stout & Kraus LLP
Hitachi , Ltd.
Norman Marc
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