Refrigeration – Automatic control – Refrigeration producer
Reexamination Certificate
2007-02-27
2007-02-27
Tyler, Cheryl (Department: 3744)
Refrigeration
Automatic control
Refrigeration producer
C062S259200
Reexamination Certificate
active
10832297
ABSTRACT:
An inverter device for variably controlling an operating frequency of an electric motor, which drives a compressor in a refrigerating cycle. the inverter includes a box-like resin case, having a metal film for shielding being applied or plated on a surface thereof and having a step portion on which a terminal block for the motor is arranged. A first substrate having mounted thereon power semiconductor devices constituting a converter and an inverter so as to be immersed in gel, and the first substrate is mounted in the case and brought into proximity of radiation fins at a reverse surface thereof. A second substrate having mounted thereon interface connectors into which signals from detection sensors for temperatures and pressures in the refrigerating cycle are input and photo-couplers for transmitting the input signals, and the second substrate is mounted in the case above the first substrate.
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Ando Tatsuo
Furusawa Satoshi
Kurita Yoshiaki
Takatuka Kuniaki
Yamada Noriaki
Antonelli, Terry Stout and Kraus, LLP.
Bankhead Gene
Tyler Cheryl
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