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1. WO2020115639 - APPARATUS AND PROCESS FOR CONTROLLING A COMPRESSOR ASSEMBLY LUBRICATION STATUS AND REFRIGERATING MACHINE COMPRISING SAID APPARATUS

Publication Number WO/2020/115639
Publication Date 11.06.2020
International Application No. PCT/IB2019/060364
International Filing Date 02.12.2019
IPC
F04B 39/02 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
39Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/-F04B37/225
02Lubrication
F04B 49/22 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
49Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups F04B1/-F04B47/196
22by means of valves
F04B 53/18 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
53Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/-F04B23/ or F04B39/-F04B47/203
18Lubricating
CPC
F04B 39/02
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
39Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
02Lubrication
F04B 39/0223
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
39Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
02Lubrication
0223characterised by the compressor type
F04B 49/225
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
49Control ; , e.g. of pump delivery, or pump pressure; of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
22by means of valves
225with throttling valves or valves varying the pump inlet opening or the outlet opening
F04B 53/18
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
53Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
18Lubricating
Applicants
  • CAREL INDUSTRIES S.P.A. [IT]/[IT]
Inventors
  • ROSSANESE, Giovanni
  • MATTIELLO, Luca
  • NALINI, Luigi
  • MUVEGI, Willy
Agents
  • DE GIORGI, Michele
Priority Data
10201800001077904.12.2018IT
Publication Language English (EN)
Filing Language Italian (IT)
Designated States
Title
(EN) APPARATUS AND PROCESS FOR CONTROLLING A COMPRESSOR ASSEMBLY LUBRICATION STATUS AND REFRIGERATING MACHINE COMPRISING SAID APPARATUS
(FR) APPAREIL ET PROCÉDÉ DE COMMANDE D'UN ÉTAT DE LUBRIFICATION D'ENSEMBLE COMPRESSEUR ET MACHINE RÉFRIGÉRANTE COMPRENANT LEDIT APPAREIL
Abstract
(EN)
Apparatus and process for controlling the lubrication of a compressor unit (15) of a refrigerating machine which is provided with an expansion valve (17) which has an adjustable degree of opening and which has an inlet (18) and an outlet (19) and which is in fluid communication with a casing (15a) of the compressor unit (15) so as to be passed through by a flow tapped from the latter. The process comprises a check procedure which comprises: - a tapping operation for drawing a flow from the compressor and passing it through the expansion valve (17); - a measurement operation which involves measuring a temperature difference which the fluid has between the inlet (18) and the outlet (19) of the expansion valve (17); - a verification operation which is positive if the modulus of the measured temperature difference exceeds a threshold value; - a replenishment operation which involves the introduction of lubricating oil into the compressor when the result of verification is positive.
(FR)
L'invention concerne un appareil et un procédé pour commander la lubrification d'une unité de compresseur (15) d'une machine de réfrigération qui est pourvue d'une soupape d'expansion (17) qui a un degré d'ouverture ajustable et qui a une entrée (18) et une sortie (19) et qui est en communication fluidique avec un boîtier (15a) de l'unité de compresseur (15) de manière à être traversée par un écoulement prélevé à partir de celui-ci. Le procédé comprend une procédure de contrôle qui comprend : - une opération de soutirage pour aspirer un écoulement à partir du compresseur et le faire passer à travers la soupape d'expansion (17) ; - une opération de mesure qui consiste à mesurer une différence de température que le fluide a entre l'entrée (18) et la sortie (19) de la valve d'expansion (17) ; - une opération de vérification qui est positive si le module de la différence de température mesurée dépasse une valeur de seuil ; - une opération de remplissage qui implique l'introduction d'huile lubrifiante dans le compresseur lorsque le résultat de la vérification est positif.
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