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1. WO2020198277 - DEFROST CYCLE CONTROL ASSEMBLY IN A HEAT PUMP

Publication Number WO/2020/198277
Publication Date 01.10.2020
International Application No. PCT/US2020/024567
International Filing Date 25.03.2020
IPC
F25B 47/02 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
47Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
02Defrosting cycles
F25B 49/02 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
02for compression type machines, plant or systems
F25B 30/02 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
30Heat pumps
02of the compression type
CPC
F25B 13/00
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
13Compression machines, plant or systems with reversible cycle
F25D 21/006
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
DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHER SUBCLASS
21Defrosting; Preventing frosting; Removing condensed or defrost water
002Defroster control
006with electronic control circuits
Applicants
  • RHEEM MANUFACTURING COMPANY [US]/[US]
Inventors
  • KALAMBE, Aniket R.
  • LOWRIMORE, Walter R.
  • HURT, Neil D.
  • ANDREWS, Michael
  • FOSTER, Randy
Agents
  • SCHUTZ, James Edward
  • HENSLEY, Micah B.
Priority Data
16/365,28226.03.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) DEFROST CYCLE CONTROL ASSEMBLY IN A HEAT PUMP
(FR) ENSEMBLE DE COMMANDE DE CYCLE DE DÉGIVRAGE DANS UNE POMPE À CHALEUR
Abstract
(EN)
A defrost cycle control assembly includes a first sensor that is configured to measure a temperature adjacent a top portion of an outdoor heat exchanger of a heat pump, a second sensor that is configured to measure a temperature adjacent a bottom portion of the outdoor heat exchanger, and a third sensor that is configured to measure an ambient temperature. Further, the defrost cycle control assembly includes a controller that is configured to initiate a defrost cycle of the heat pump based on the temperature adjacent the top portion and the ambient temperature when said temperatures indicate formation of frost at the top portion of the outdoor heat exchanger where the first sensor is disposed. The controller is configured to terminate the defrost cycle when the temperature at the bottom portion reaches a termination temperature which indicates that the frost on the outdoor heat exchanger has melted.
(FR)
L'invention concerne un ensemble de commande de cycle de dégivrage comprenant un premier capteur qui est conçu pour mesurer une température adjacente à une portion supérieure d'un échangeur de chaleur extérieur d'une pompe à chaleur, un deuxième capteur qui est conçu pour mesurer une température adjacente à une portion inférieure de l'échangeur de chaleur extérieur, et un troisième capteur qui est conçu pour mesurer une température ambiante. De plus, l'ensemble de commande de cycle de dégivrage comprend un contrôleur qui est conçu pour initier un cycle de dégivrage de la pompe à chaleur sur la base de la température adjacente à la portion supérieure et de la température ambiante lorsque lesdites températures indiquent la formation de givre au niveau de la portion supérieure de l'échangeur de chaleur extérieur où est disposé le premier capteur. Le contrôleur est conçu pour mettre fin au cycle de dégivrage lorsque la température au niveau de la portion inférieure atteint une température de terminaison qui indique que le givre sur l'échangeur de chaleur extérieur a fondu.
Also published as
Latest bibliographic data on file with the International Bureau