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1. WO2022003310 - SEAL FOR A COMPRESSOR

Publication Number WO/2022/003310
Publication Date 06.01.2022
International Application No. PCT/GB2021/051258
International Filing Date 24.05.2021
IPC
F04D 17/06 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
17Radial-flow pumps specially adapted for elastic fluids, e.g. centrifugal pumps; Helico-centrifugal pumps specially adapted for elastic fluids
06Helico-centrifugal pumps
F04D 29/16 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
29Details, component parts, or accessories
08Sealings
16between pressure and suction sides
CPC
F04D 17/06
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
17Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
06Helico-centrifugal pumps
F04D 29/161
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
29Details, component parts, or accessories
08Sealings
16between pressure and suction sides
161especially adapted for elastic fluid pumps
F04D 29/162
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
29Details, component parts, or accessories
08Sealings
16between pressure and suction sides
161especially adapted for elastic fluid pumps
162of a centrifugal flow wheel
F16J 15/447
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
JPISTONS
15Sealings
44Free-space packings
447Labyrinth packings
Applicants
  • DYSON TECHNOLOGY LIMITED [GB]/[GB]
Inventors
  • COLLISON, Michael
  • CORRALEJO ANTON, Raul
Agents
  • HOBDAY, Duncan
  • RICHARDSON, Lyndsey
  • MACPHERSON, Carolyn
  • CHAPMAN, Alan
  • BOOTH, Andrew
  • MITCHELL, Joshua
  • MACKISACK, Anna
  • WARNER, Thomas
  • FOWLER, Maria
  • MACPHERSON, Craig
  • FORRESTER, Simon
Priority Data
2009985.930.06.2020GB
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) SEAL FOR A COMPRESSOR
(FR) JOINT D’ÉTANCHÉITÉ POUR COMPRESSEUR
Abstract
(EN) A compressor is provided for use in domestic appliances (10). The compressor comprises an impeller (80), a housing (78) and a seal (88). The impeller (80) is connected to a generally conical hub (82) defining a rotational axis (91) of the impeller (80). A generally frustoconical shroud (86) is connected to and at least partially surrounds the impeller (80). The housing (78) at least partially surrounds the shroud (86) and is coaxially arranged with respect to the rotational axis (91) of the impeller (80) for allowing the impeller (80) to rotate within the housing (78). The seal (88) restricts the amount of fluid leaking through a flow path between the shroud (86) and the housing (78), and is formed as a labyrinth seal (88) comprising a series of matching features in an outer surface of the shroud (86) and an opposing inner surface of the housing (78).
(FR) La présente invention concerne un compresseur pour utilisation dans des appareils électroménagers (10). Le compresseur comprend une roue (80), un boîtier (78) et un joint d’étanchéité (88). La roue (80) est reliée à un moyeu généralement conique (82) définissant un axe de rotation (91) de la roue (80). Une enveloppe généralement tronconique (86) est reliée à et entoure au moins partiellement la roue (80). Le boîtier (78) entoure au moins partiellement l’enveloppe (86) et est agencé coaxialement par rapport à l’axe de rotation (91) de la roue (80) pour permettre à la roue (80) de tourner à l’intérieur du boîtier (78). Le joint d’étanchéité (88) limite la quantité de fluide s’échappant à travers un trajet d’écoulement entre l’enveloppe (86) et le boîtier (78), et est formé sous la forme d’un joint à labyrinthe (88) comprenant une série de caractéristiques de correspondance dans une surface externe de l’enveloppe (86) et une surface interne opposée du boîtier (78).
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