Device for cooling an interior of a motor vehicle
First Claim
1. A cooling device for cooling an interior of a vehicle, comprising:
- a primary refrigerating circuit comprising an evaporator for providing a temperature conditioned flow; and
a secondary circuit operatively coupled to said primary refrigerating circuit, said secondary circuit carrying a refrigerating medium to which the temperature conditioned flow from said evaporator is provided, said secondary circuit comprising;
a main circuit;
an auxiliary circuit operatively coupled with said main circuit; and
an adjustable valve for controlling flow of the refrigerating medium between said main circuit and said auxiliary circuit, wherein said auxiliary circuit comprises (i) at least one heat transfer device for receiving said refrigerating medium and cooling air to be feed into the vehicle interior, and (ii) an inner heat exchanger operatively coupled with said heat transfer device for increasing the temperature of the refrigerating medium provided to said heat transfer device.
1 Assignment
0 Petitions
Accused Products
Abstract
The invention relates to a device for cooling a vehicle interior with a secondary circuit (26) for transferring the cold produced in an evaporator (24) of a primary refrigerating circuit (14) of a refrigerating unit (12) by means of a refrigerating medium to at least one heat transfer device (34) for cooling the air to be fed into the vehicle interior, the secondary circuit (26) having a main circuit (36) and an auxiliary circuit (40) containing the heat transfer device (34), which are coupled by a four-way valve (56), by means of which an adjustable proportion of the flow of refrigerating medium can be diverted from the main circuit (36) and fed into the auxiliary circuit (40). In order to provide an improved device for cooling, in particular one that can be produced at a more reasonable cost, it is proposed that an inner heat exchanger (80) should be provided in the auxiliary circuit (40), allowing heat exchange to take place between a feed (60) and a return (62). This makes it possible to dispense with the use of a circulation pump in the auxiliary circuit.
4 Citations
16 Claims
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1. A cooling device for cooling an interior of a vehicle, comprising:
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a primary refrigerating circuit comprising an evaporator for providing a temperature conditioned flow; and
a secondary circuit operatively coupled to said primary refrigerating circuit, said secondary circuit carrying a refrigerating medium to which the temperature conditioned flow from said evaporator is provided, said secondary circuit comprising;
a main circuit;
an auxiliary circuit operatively coupled with said main circuit; and
an adjustable valve for controlling flow of the refrigerating medium between said main circuit and said auxiliary circuit, wherein said auxiliary circuit comprises (i) at least one heat transfer device for receiving said refrigerating medium and cooling air to be feed into the vehicle interior, and (ii) an inner heat exchanger operatively coupled with said heat transfer device for increasing the temperature of the refrigerating medium provided to said heat transfer device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
a compressor operably coupled to the output of said evaporator;
a condenser operably coupled to the output of said compressor; and
an expansion element operably coupled to the output of said condenser.
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16. A vehicle air conditioning unit comprising:
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a cooling device comprising;
a primary refrigerating circuit comprising an evaporator for providing a temperature conditioned flow; and
a secondary circuit operatively coupled to said primary refrigerating circuit, said secondary circuit carrying a refrigerating medium to which the temperature conditioned flow from said evaporator is provided, said secondary circuit comprising;
a main circuit;
an auxiliary circuit operatively coupled with said main circuit; and
an adjustable valve for controlling flow of the refrigerating medium between said main circuit and said auxiliary circuit, wherein said auxiliary circuit comprises (i) at least one heat transfer device for receiving said refrigerating medium and cooling air to be feed into the vehicle interior, and (ii) an inner heat exchanger operatively coupled with said heat transfer device for increasing the temperature of the refrigerating medium provided to said heat transfer device.
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Specification