US. Patent Application Serial No.: 12/300,703
`Reply to 0A dated July 12, 2011
`
`AMENDMENTS TO THE CLAIMS:
`
`This listing of claims will replace all prior versions, and listings, of claims in the
`
`application:
`
`Listing of Claims:
`
`Claim 1 (Currently Amended): A refrigeration apparatus comprising:
`
`a refrigerant circuit in which a refrigerant discharged from a compressor having a
`
`discharge side and a suction side is condensed and then evaporated to exert a cooling
`
`function; and
`
`
`a tank connected to a pipe of the compressor on [[a]] solely the suction side of the
`
`discharge side and suction side via a pressure reducing unit, the pressure reducing unit
`
`being connected in parallel with a check valve, the direction of the tank being the forward
`
`direction of the check valve.
`
`Claim 2 (Currently Amended): A refrigeration apparatus comprising:
`
`a high-temperature—side refrigerant circuit and a low-temperature—side refrigerant
`
`circuit each constituting an independent refrigerant closed circuit in which a refrigerant
`
`discharged from a compressor having a discharge side and a suction side is condensed
`
`and then evaporated to exert a cooling function, an evaporator of the high-temperature-
`
`side refrigerant circuit and a condenser of the low—temperature—side refrigerant circuit
`
`constituting a cascade heat exchanger, an evaporator of the low-temperature-side
`
`refrigerant circuit achieving an extremely low temperature; and
`
`2
`
`
`Reply to 0A dated July 12, 2011
`
`AMENDMENTS TO THE CLAIMS:
`
`This listing of claims will replace all prior versions, and listings, of claims in the
`
`application:
`
`Listing of Claims:
`
`Claim 1 (Currently Amended): A refrigeration apparatus comprising:
`
`a refrigerant circuit in which a refrigerant discharged from a compressor having a
`
`discharge side and a suction side is condensed and then evaporated to exert a cooling
`
`function; and
`
`
`a tank connected to a pipe of the compressor on [[a]] solely the suction side of the
`
`discharge side and suction side via a pressure reducing unit, the pressure reducing unit
`
`being connected in parallel with a check valve, the direction of the tank being the forward
`
`direction of the check valve.
`
`Claim 2 (Currently Amended): A refrigeration apparatus comprising:
`
`a high-temperature—side refrigerant circuit and a low-temperature—side refrigerant
`
`circuit each constituting an independent refrigerant closed circuit in which a refrigerant
`
`discharged from a compressor having a discharge side and a suction side is condensed
`
`and then evaporated to exert a cooling function, an evaporator of the high-temperature-
`
`side refrigerant circuit and a condenser of the low—temperature—side refrigerant circuit
`
`constituting a cascade heat exchanger, an evaporator of the low-temperature-side
`
`refrigerant circuit achieving an extremely low temperature; and
`
`2
`
`
`
`US. Patent Application Serial No.: 12/300,703
`Reply to 0A dated July 12, 2011
`
`a tank connected to a pipe of the compressor of the low-temperature-side
`
`refrigerant circuit on [[a]] solely the suction side of the discharge side and suction side
`
`via a pressure reducing unit, the pressure reducing unit being connected in parallel with a
`
`check valve, the direction of the tank being the forward direction of the check valve.
`
`Claim 3 (Currently Amended): A refrigeration apparatus comprising:
`
`a compressor having a discharge side and a suction side, a condenser, an
`
`evaporator, and a plurality of intermediate heat exchangers and a plurality of pressure
`
`reducing units connected in series so that a refrigerant fed back from the evaporator
`
`circulates, wherein a plurality of types of non-azeotropic mixed refiigerants are
`
`introduced, a condensed refrigerant in the refrigerants fed through the condenser is
`
`allowed to join the intermediate heat exchanger via the pressure reducing unit, and a non-
`
`condensed refrigerant in the refrigerants is cooled by the intermediate heat exchanger to
`
`successively condense the refrigerant having a lower boiling point, and the refrigerant
`
`having the lowest boiling point is allowed to flow into the evaporator via the final-stage
`
`pressure reducing unit to obtain an extremely low temperature,
`
`the refrigeration apparatus further comprising:
`
`
`a tank connected to a pipe of the compressor on [[a]] solely the suction side of the
`
`discharge side and suction side via the pressure reducing unit, the pressure reducing unit
`
`being connected in parallel with a check valve, the direction of the tank being the forward
`
`direction of the check valve.
`
`
`
`US. Patent Application Serial No.: 12/300,703
`Reply to OA dated July 12, 2011
`
`Claim 4 (Currently Amended): A refrigeration apparatus comprising:
`
`a high-temperature—side refrigerant circuit and a low-temperature-side refrigerant
`
`circuit each constituting an independent refrigerant closed circuit in which a refrigerant
`
`discharged from a compressor having a discharge side and a suction side is condensed
`
`and then evaporated to exert a cooling function, the low-temperature-side refrigerant
`
`circuit having the compressor, a condenser, an evaporator, and a plurality of intermediate
`
`heat exchangers and a plurality of pressure reducing units connected in series so that the
`
`refrigerant fed back from the evaporator circulates, wherein a plurality of types of non-
`
`azeotropic mixed refrigerants are introduced, a
`
`condensed refrigerant in the refrigerants fed through the condenser is allowed to
`
`join the intermediate heat exchanger via the pressure reducing unit, a non-condensed
`
`refrigerant in the refrigerants is cooled by the intermediate heat exchanger to successively
`
`condense the refrigerant having a lower boiling point, the refrigerant having the lowest
`
`boiling point is allowed to flow into the evaporator via the final-stage pressure reducing
`
`unit, an evaporator of the high-temperature-side refrigerant circuit and the condenser of
`
`the low-temperature-side refrigerant circuit constitute a cascade heat exchanger, and the
`
`evaporator of the low—temperature-side refrigerant circuit obtains an extremely low
`
`temperature,
`
`the refrigeration apparatus further comprising:
`
`a tank connected to a pipe of the compressor of the low-temperature-side
`
`refrigerant circuit on [[a]] solely the suction side of the discharge side and suction side
`
`via the pressure reducing unit, the pressure reducing unit being connected in parallel with
`
`a check valve, the direction of the tank being the forward direction of the check valve.
`
`4
`
`
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