Patent ID: 7818978
Filing Date: 2010-10-26
Classification: F25B

Abstract:
1. A vapour compression device for a transcritical fluid cycle comprising at least: an internal heat exchanger, a first vapour compression system connection to an outlet of the internal heat exchanger, a first isobaric cooling system —having an inlet and an outlet and being—connected to an outlet of the first vapor compression system, a fluid distributor placed at —the—outlet of the first isobaric cooling system that separates the fluid into a main circuit of the cycle and an auxiliary cooling circuit of the cycle, an auxiliary expansion system placed on the auxiliary cooling circuit between the fluid distributor and an inlet of the internal heat exchanger, a main expansion system placed on the main circuit and connected to the outlet of the internal heat exchanger, an evaporator operating at low pressure placed between an outlet of the main expansion system and the inlet of the internal heat exchanger, a second vapour compression system, and a second isobaric cooling system connected to an outlet of the second vapour compression system, wherein the second vapour compression system and the second isobaric cooing system are placed on the main circuit of the cycle after the fluid distributor and before the inlet of the internal heat exchanger, and the fluid separated into the auxiliary cooling circuit by the fluid distributor flows serially from the fluid distributor through the auxiliary expansion system and into the internal heat exchanger.