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1. (WO1991008428) APPARATUS FOR THE SENSING OF REFRIGERANT TEMPERATURES
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/008428 International Application No.: PCT/CA1990/000421
Publication Date: 13.06.1991 International Filing Date: 27.11.1990
Chapter 2 Demand Filed: 06.06.1991
IPC:
F25B 5/02 (2006.01) ,F25B 41/00 (2006.01) ,F25B 41/06 (2006.01) ,F25B 43/00 (2006.01)
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
5
Compression machines, plant, or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
02
arranged in parallel
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
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:
SUPER S.E.E.R. SYSTEMS INC. [CA/CA]; 1348 Dundas Street East Burlington, Ontario L7R 3X4, CA
Inventors:
GREGORY, Charles; CA
Agent:
ROGERS, Stanley, J. ; Rogers & Scott Suite 201 277 Lakeshore Road East Oakville, Ontario L6J 6J3, CA
Priority Data:
2,004,22029.11.1989CA
Title (EN) APPARATUS FOR THE SENSING OF REFRIGERANT TEMPERATURES
(FR) APPAREIL DE DETECTION DES TEMPERATURES REFRIGERANTES
Abstract:
(EN) A device (48) is provided for sensing refrigerant temperatures in refrigerator systems, and for the control of refrigerant loading in a refrigerator evaporator circuit coils (34a, 34b). Such evaporator coils (34a, 34b) are supplied with refrigerant through a thermostatically controlled flow control valve (30), which is controlled by a sensor (50) to ensure a predermined amount of superheat. The usual minimum superheat is about 5.5 °C (10 °F) and to reduce this value the refrigerant is passed through the device (48) in which it is rendered thoroughly turbulent and mixed, the device (48) intercepting the entire refrigerant flow just before the sensing of the superheat, thus ensuring that the temperature is accurately measured. The part of the device wall (72) intended to receive the sensor (50) is provided with a groove (82) into which the sensor (50) fits snugly to increase the heat exchange contact between them. Grooves (82, 84) of different sizes can be provided in the same device to accommodate sensors of respective different sizes. The heat conductive contact can be increased further by sandwiching a layer (86) of pasty heat conductive material between the sensor (50) and the groove (82, 84) wall that fills the space between them.
(FR) Dispositif (48) de détection des températures réfrigérantes dans les systèmes de réfrigération et de régulation de la charge réfrigérante dans des circuits de serpentins réfrigérateurs évaporateurs connectés en parallèle (34a, 34b). Ces serpentins réfrigérateurs évaporateurs (34a, 34b) sont alimentés en liquide réfrigérant grâce à une soupape de régulation du débit régulée thermostatiquement, qui est commandée par un détecteur (50) pour assurer une quantité prédéterminée de surchauffe. Le minimum habituel de surchauffe est d'environ 5,5 °C (10 °F) et pour réduire cette valeur, le réfrigérant est passé dans le dispositif (48) au sein duquel il est soigneusement rendu turbulent et mélangé, le dispositif (48) interceptant la totalité du débit de réfrigérant juste avant la détection de la surchauffe, assurant ainsi une mesure précise de la température. La partie de la paroi (72) du dispositif destinée à recevoir le détecteur (50) peut être dotée d'une rainure (82) dans laquelle le détecteur (50) est bien ajusté de manière à augmenter l'échange de chaleur par contact entre ces deux structures. Le même dispositif (48) peut comporter des rainures (82, 84) de différentes tailles pour recevoir des détecteurs de ces différentes tailles respectives. Le contact destiné à la conduction de chaleur peut encore être amélioré en plaçant en sandwich une couche (86) de matériau conducteur de chaleur pâteux entre le détecteur (50) et la paroi des rainures (82, 84) de manière à combler l'espace qui les sépare.
Designated States: AU, BR, JP, KR, NO, SU
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0502883AU1990067488