Appeal 2007-2815
Application 10/498,809
said reversible vapor compression system including a
refrigerant circuit having at least:
a first stage compressor for compressing refrigerant;
a flow reversing device connected to a downstream side
of the first stage compressor;
an interior heat exchanger connected to the flow
reversing device;
a first multi-function expansion device connected to the
interior heat exchanger;
an internal heat exchanger, connected to the first multi-
function expansion device, for exchanging heat inside the
refrigerant circuit;
an exterior heat exchanger connected to the internal heat
exchanger;
a second multi-function expansion device connected to
the exterior heat exchanger;
an auxiliary heat exchanger through which coolant from
a vehicle drive system is circulated, said auxiliary heat
exchanger being connected between the second multi-function
expansion device and the flow reversing device; and
an accumulator connected in an operational relationship
through conduits between the flow reversing device and the
internal heat exchanger to form a closed main circuit,
wherein the inter-connection of the first stage
compressor, the interior heat exchanger, the exterior heat
exchanger, the internal heat exchanger, the accumulator, the
flow reversing device, the auxiliary heat exchanger, the first
multi[-]function expansion device and the second
multi[-]function expansion device are provided such that
ambient air and coolant circulated from the vehicle drive
system can both partially or fully be used as a heat source and a
heat sink in a heat pump mode and a comfort cooling mode,
respectively.
Thus, claim 29 is directed to a reversible vapor compression system
with a refrigerant circuit having the nine above-named components, for
heating or cooling a vehicle passenger compartment.
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