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1. (WO1998049502) REFRIGERATING FLUID CYCLE FOR MOTOR VEHICLE AIR CONDITIONING UNIT
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/049502 International Application No.: PCT/FR1998/000854
Publication Date: 05.11.1998 International Filing Date: 28.04.1998
IPC:
B60H 1/32 (2006.01) ,F25B 41/06 (2006.01) ,F25B 43/00 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
60
VEHICLES IN GENERAL
H
ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES
1
Heating, cooling or ventilating devices
32
Cooling devices
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25
REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION OR SOLIDIFICATION OF GASES
B
REFRIGERATION MACHINES, PLANTS, OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
41
Fluid-circulation arrangements, e.g. for transferring liquid from evaporator to boiler
06
Flow restrictors, e.g. capillary tubes; Disposition thereof
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25
REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION OR SOLIDIFICATION OF GASES
B
REFRIGERATION MACHINES, PLANTS, OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
43
Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
Applicants:
VALEO CLIMATISATION [FR/FR]; 8, rue Louis-Lormand F-78321 La Verriere, FR (AT, BE, BR, CH, CN, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
POMME, Vincent [FR/FR]; FR (UsOnly)
HAMERY, Bruno [FR/FR]; FR (UsOnly)
Inventors:
POMME, Vincent; FR
HAMERY, Bruno; FR
Agent:
RUIS, Alain; Valeo Management Services Propriété Industrielle 2, rue André Boulle Boîte postale 150 F-94017 Creteil, FR
Priority Data:
97/0539430.04.1997FR
Title (EN) REFRIGERATING FLUID CYCLE FOR MOTOR VEHICLE AIR CONDITIONING UNIT
(FR) BOUCLE DE FLUIDE REFRIGERANT POUR INSTALLATION DE CLIMATISATION DE VEHICULE
Abstract:
(EN) The invention concerns a refrigerating fluid cycle (1) comprising the standard compressor (2), condenser (3), liquid/gas separating reservoir (5), expansion device (6) and evaporator (7). The invention is characterised in that a pre-expansion device (4) is placed between the condenser (3) and the reservoir (5), so as to reduce the fluid pressure until it reaches its saturation vapour pressure. The reservoir can thus contain a variable amount of liquid to compensate the fluid losses in the cycle by maintaining the sub-cooling temperature constant thereby enabling the heat load to be absorbed by the condenser.
(FR) La boucle (1) de fluide réfrigérant comprend de façon classique un compresseur (2), un condenseur (3), un réservoir de séparation liquide/gaz (5), un détendeur (6) et un évaporateur (7). Selon l'invention, un dispositif de prédétente (4) est interposé entre le condenseur (3) et le réservoir (5), de manière à abaisser la pression du fluide jusqu'à sa pression de vapeur saturante. Le réservoir peut ainsi contenir une quantité variable de liquide pour compenser les pertes de fluide dans la boucle en maintenant constante la température de sous-refroidissement du fluide dans le condenseur et par conséquent la puissance calorifique pouvant être absorbée par l'évaporateur.
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Designated States: BR, CN, US
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: French (FR)
Filing Language: French (FR)
Also published as:
ES2224399EP0928404US6145339DE000069824694FR2762898