Automotive air conditioning system
First Claim
1. An automotive air conditioning system comprising:
- a primary hot water circuit which includes a heat generator installed in a vehicle and through which a coolant which cools the heat generator flows;
a secondary hot water circuit which includes a hot water type heater core which heats passenger compartment outlet air and in which the coolant flows through the hot water type heater core;
valve means adapted to be changed over between a cutting off state in which the valve means cut off the primary hot water circuit from the secondary hot water circuit and a connecting state in which the valve means connect the primary hot water circuit with the secondary hot water circuit;
a coolant-refrigerant heat exchanger provided on a discharge side of a compressor along a refrigeration cycle (R) for heating the coolant in the secondary hot water circuit by virtue of heat dissipation from a high-pressure refrigerant on the discharge side of the compressor; and
a primary control means for controlling the valve means by comparing a coolant temperature (TW1) of the primary hot water circuit with a coolant temperature (TW2) of the secondary hot water circuit;
wherein the primary control means controls such that the valve means are put in the cutting off state when the coolant temperature (TW1) of the primary hot water circuit is lower than the coolant temperature (TW2) of the secondary hot water circuit, whereas when the coolant temperature (TW1) of the primary hot water circuit becomes higher than the coolant temperature (TW2) of the secondary hot water circuit, the valve means are put in the connecting state.
1 Assignment
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Accused Products
Abstract
An automotive air conditioning system has a primary hot water circuit 11 located on a side where a vehicle installed heat generator 10 is located and a secondary hot water circuit 13 which includes a hot water type heater core 12 for heating passenger compartment outlet air, whereby when in a heating mode, in the event that a coolant temperature TW1 of the primary hot water circuit is lower than a coolant temperature TW2 of the secondary hot water circuit 13, an opening and closing valve 26 is closed, whereas an opening and closing valve 23 is opened, so that a state is created in which the hot water circuits 11, 13 are separated from each other. On the other hand, in the event that the coolant temperature TW1 of the primary hot water circuit becomes higher than the coolant temperature TW2 of the secondary hot water circuit 13, the opening and closing valve 26 is opened, whereas the opening and closing valve 23 is closed, so that a state is created in which the hot water circuits 11, 13 are connected to each other.
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Citations
10 Claims
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1. An automotive air conditioning system comprising:
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a primary hot water circuit which includes a heat generator installed in a vehicle and through which a coolant which cools the heat generator flows;
a secondary hot water circuit which includes a hot water type heater core which heats passenger compartment outlet air and in which the coolant flows through the hot water type heater core;
valve means adapted to be changed over between a cutting off state in which the valve means cut off the primary hot water circuit from the secondary hot water circuit and a connecting state in which the valve means connect the primary hot water circuit with the secondary hot water circuit;
a coolant-refrigerant heat exchanger provided on a discharge side of a compressor along a refrigeration cycle (R) for heating the coolant in the secondary hot water circuit by virtue of heat dissipation from a high-pressure refrigerant on the discharge side of the compressor; and
a primary control means for controlling the valve means by comparing a coolant temperature (TW1) of the primary hot water circuit with a coolant temperature (TW2) of the secondary hot water circuit;
whereinthe primary control means controls such that the valve means are put in the cutting off state when the coolant temperature (TW1) of the primary hot water circuit is lower than the coolant temperature (TW2) of the secondary hot water circuit, whereas when the coolant temperature (TW1) of the primary hot water circuit becomes higher than the coolant temperature (TW2) of the secondary hot water circuit, the valve means are put in the connecting state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification