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1. WO1995035462 - OIL LEVEL CONTROL APPARATUS

Publication Number WO/1995/035462
Publication Date 28.12.1995
International Application No. PCT/AU1995/000354
International Filing Date 16.06.1995
Chapter 2 Demand Filed 01.11.1995
IPC
F16N 19/00 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
NLUBRICATING
19Lubricant containers for use in lubricators or lubrication systems
F25B 31/00 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION OR SOLIDIFICATION OF GASES
BREFRIGERATION MACHINES, PLANTS, OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
31Compressor arrangements
CPC
F16N 19/006
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
NLUBRICATING
19Lubricant containers for use in lubricators or lubrication systems
006Maintaining oil level
F16N 2270/10
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
NLUBRICATING
2270Controlling
10Level
F16N 2270/14
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
NLUBRICATING
2270Controlling
10Level
14using float device
F16N 2280/02
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
NLUBRICATING
2280Valves
02electromagnetically operated
F25B 2400/075
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
2400General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
07Details of compressors or related parts
075with parallel compressors
F25B 2700/03
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
2700Sensing or detecting of parameters; Sensors therefor
03Oil level
Applicants
  • REFRIGERANT MONITORING SYSTEMS PTY. LTD. [AU]/[AU] (AllExceptUS)
  • WALLER, Clive, Gregory [AU]/[AU] (UsOnly)
Inventors
  • WALLER, Clive, Gregory
Agents
  • MIZZI, Anthony, Paul
Priority Data
PM 630017.06.1994AU
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) OIL LEVEL CONTROL APPARATUS
(FR) DISPOSITIF DE REGULATION DU NIVEAU D'HUILE
Abstract
(EN)
An apparatus (38) is disclosed for controlling the level of oil in one or more compressors (10) of a refrigeration system. The compressors (10) are supplied with oil from a reservoir (28) which is in fluid communication via a common conduit (32) and second conduit (98) with the oil sump (not shown) of each compressor (10). The apparatus (38) includes a housing composed of a main body portion and a spacer block. The body portion is provided with a chamber which houses a float. The chamber is in fluid communication with the oil sump of its respective compressor (10). As the oil level within the compressor (10) varies, the angle of pivot of float also varies. This variation is sensed by a sensor which produces a signal indicative of the level of the oil. When the signal is indicative that the level of oil within the compressor is below a first predetermined minimum level, solenoid valve (78) is opened and solenoid valve (82) closed. This allows oil from the reservoir (24) to flow via conduits (32 and 98) into the compressor. In another embodiment, if the signal is indicative that the oil level within the compressor is higher than a predetermined maximum level, solenoid valve (78) is caused to close and solenoid valve (82) caused to open resulting in oil being dumped from the compressor back to the oil reservoir (28) via conduits (98 and 32).
(FR)
L'invention concerne un appareil (38) destiné à réguler le niveau d'huile dans un ou plusieurs compresseurs (10) d'un système de réfrigération. Les compresseurs (10) sont alimentés en huile à partir d'un réservoir (28) qui est en communication par un conduit commun (32) et un second conduit (98) avec le carter d'huile (non représenté) de chaque compresseur (10). L'appareil (38) comporte un logement composé d'une partie de corps principale et d'un bloc d'espacement. La partie de corps est pourvue d'une chambre qui contient un flotteur. La chambre est en communication fluide avec le carter d'huile de son compresseur respectif (10). Lorsque le niveau d'huile dans le compresseur (10) varie, l'angle de pivotement du flotteur (48) varie également. Cette variation est détectée par un détecteur qui produit un signal indiquant le niveau de l'huile. Lorsque le signal indique que le niveau de l'huile dans le compresseur est inférieur à un premier niveau minimum prédéterminé, l'électrovanne (78) est ouverte et l'électrovanne (82) est fermée. Ceci permet à l'huile du réservoir (24) de circuler par les conduits (32) et (98) vers le compresseur. Dans une autre forme d'exécution, lorsque le signal indique que le niveau d'huile dans le compresseur est supérieur à un niveau maximum prédéterminé, l'électrovanne (78) est fermée et l'électrovanne (82) ouverte, ce qui provoque le retour de l'huile du compresseur vers le réservoir à huile (28), par les conduits (98) et (32).
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