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1. WO2020109212 - SENSING OF A VAPOUR QUALITY

Publication Number WO/2020/109212
Publication Date 04.06.2020
International Application No. PCT/EP2019/082379
International Filing Date 25.11.2019
IPC
G01N 22/00 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
22Investigating or analysing materials by the use of microwaves
F25B 49/00 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
49Arrangement or mounting of control or safety devices
G01R 27/26 2006.01
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
27Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
02Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
26Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants
CPC
F25B 2400/051
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
05Compression system with heat exchange between particular parts of the system
051between the accumulator and another part of the cycle
F25B 2600/2513
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
2600Control issues
25Control of valves
2513Expansion valves
F25B 40/00
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
40Subcoolers, desuperheaters or superheaters
F25B 49/02
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
49Arrangement or mounting of control or safety devices
02for compression type machines, plant or systems
F25B 5/02
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
5Compression machines, plant, or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
02arranged in parallel
G01N 22/00
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
22Investigating or analysing materials by the use of microwaves
Applicants
  • DANFOSS A/S [DK]/[DK]
Inventors
  • VESTERGAARD, Niels, P.
Agents
  • STEVENS, Brian
  • PETERSEN, Frank
Priority Data
18209029.029.11.2018EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SENSING OF A VAPOUR QUALITY
(FR) DÉTECTION D'UNE QUALITÉ DE VAPEUR
Abstract
(EN)
The invention relates to a method and device for providing a sensor signal (S) indicative of a vapor quality (X) of a medium flowing within a conduit(60). An electromagnetic wave emitter and receiver (50) is coupled to an electromagnetic wave guide (48) arranged within the conduit (60). A wave reflector (52) is arranged to reflect the electromagnetic wave from the emitter to be received by the receiver. Timing means measure a travel time T of an electro- magnetic wave along the wave guide (48). Processing means determine a sensor signal S based on the measured travel time T and a known distance L of the reflector (52) from the emitter and receiver (50) along the waveguide (48). The invention further relates to a cooling system (10, 110) and an operating method therefor. The cooling system (10, 110) includes at least one evaporator (32) for evaporating an ammonia refrigerant, at least one compressor (12) arranged tocompress the evaporated refrigerant, and at least one condenser (18) for condensing the compressed refrigerant. A sensor signal S indicative of a vapor quality X of the refrigerant in a conduit (38a) between at least a portion of the evaporator (32) and the compressor (12) is obtained from the described sensor and method.
(FR)
L'invention concerne un procédé et un dispositif pour la fourniture d'un signal de capteur (S) correspondant à la qualité de vapeur (X) d'un milieu s'écoulant à l'intérieur d'un conduit (60). Un émetteur et récepteur d'ondes électromagnétiques (50) est couplé à un guide d'ondes électromagnétiques (48) agencé à l'intérieur du conduit (60). Un réflecteur d'ondes (52) est conçu pour réfléchir l'onde électromagnétique provenant de l'émetteur et devant être reçue par le récepteur. Un compteur de temps mesure le temps de parcours T d'une onde électromagnétique le long du guide d'onde (48). Un moyen de traitement détermine un signal de capteur S sur la base du temps de parcours T mesuré et de la distance connue L entre le réflecteur (52) et l'émetteur et récepteur (50) le long du guide d'onde (48). L'invention concerne également un système de refroidissement (10, 110) et son procédé de fonctionnement. Le système de refroidissement (10, 110) comprend au moins un évaporateur (32) pour l'évaporation d'un fluide frigorigène à base d'ammoniac, au moins un compresseur (12) conçu pour comprimer le fluide frigorigène évaporé, et au moins un condenseur (18) pour condenser le fluide frigorigène comprimé. Un signal de capteur S correspondant à la qualité de vapeur X du fluide frigorigène dans un conduit (38a), entre au moins une partie de l'évaporateur (32) et le compresseur (12), est obtenu à partir du capteur et du procédé décrits.
Also published as
Latest bibliographic data on file with the International Bureau