EP4001654A1 - Pompe à rotor noyé à purge automatique - Google Patents

Pompe à rotor noyé à purge automatique Download PDF

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Publication number
EP4001654A1
EP4001654A1 EP21206236.8A EP21206236A EP4001654A1 EP 4001654 A1 EP4001654 A1 EP 4001654A1 EP 21206236 A EP21206236 A EP 21206236A EP 4001654 A1 EP4001654 A1 EP 4001654A1
Authority
EP
European Patent Office
Prior art keywords
membrane
wet
closure body
pump
fixing element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21206236.8A
Other languages
German (de)
English (en)
Inventor
Thomas Materne
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wilo SE
Original Assignee
Wilo SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wilo SE filed Critical Wilo SE
Publication of EP4001654A1 publication Critical patent/EP4001654A1/fr
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F04D13/0626—Details of the can
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/086—Sealings especially adapted for liquid pumps

Definitions

  • a glandless pump for conveying a liquid is provided with a rotor chamber filled with the liquid, in which a rotor is arranged so that it can rotate and which is separated from a stator in a liquid-tight manner by a can.
  • a semi-permeable membrane is arranged between the rotor space and the atmosphere outside of the glandless pump, which is designed to let air through and to hold back the liquid. This means that air that has entered the rotor chamber can automatically and reliably escape from it again at any time. This is due to the overpressure in the rotor space compared to the atmosphere.
  • the semi-permeable membrane is permanently active, so venting takes place at all times and requires no manual operation, such as a vent screw.
  • the membrane can be a disk, in particular a circular disk. This means that the membrane closes the opening in the closure body. Air from the rotor space can then pass through the membrane in the axial direction. So that the air can also escape to the atmosphere, the fixing element can have a cavity which opens at one end to the membrane and at the other end to the atmosphere. The air can thus flow through the fixing element used.
  • the fixing element can form a hollow screw.
EP21206236.8A 2020-11-13 2021-11-03 Pompe à rotor noyé à purge automatique Pending EP4001654A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
LU102208A LU102208B1 (de) 2020-11-13 2020-11-13 Selbstentlüftende Nassläuferpumpe

Publications (1)

Publication Number Publication Date
EP4001654A1 true EP4001654A1 (fr) 2022-05-25

Family

ID=74181248

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21206236.8A Pending EP4001654A1 (fr) 2020-11-13 2021-11-03 Pompe à rotor noyé à purge automatique

Country Status (2)

Country Link
EP (1) EP4001654A1 (fr)
LU (1) LU102208B1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0308372A1 (fr) * 1987-09-15 1989-03-22 Bieri Pumpenbau Ag Pompe de circulation, en particulier pour systèmes à eau chaude
EP1026404A1 (fr) * 1999-02-03 2000-08-09 Pierburg Aktiengesellschaft Pompe centrifuge à moteur électrique
DE102017120039A1 (de) * 2017-08-31 2019-02-28 Nidec Gpm Gmbh Kühlmittelpumpe mit anwendungsoptimiertem Aufbau
DE102018104015A1 (de) * 2018-02-22 2019-08-22 Nidec Gpm Gmbh Kühlmittelpumpe mit optimierter Lageranordnung und verbessertem Wärmehaushalt

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0308372A1 (fr) * 1987-09-15 1989-03-22 Bieri Pumpenbau Ag Pompe de circulation, en particulier pour systèmes à eau chaude
EP1026404A1 (fr) * 1999-02-03 2000-08-09 Pierburg Aktiengesellschaft Pompe centrifuge à moteur électrique
DE102017120039A1 (de) * 2017-08-31 2019-02-28 Nidec Gpm Gmbh Kühlmittelpumpe mit anwendungsoptimiertem Aufbau
DE102018104015A1 (de) * 2018-02-22 2019-08-22 Nidec Gpm Gmbh Kühlmittelpumpe mit optimierter Lageranordnung und verbessertem Wärmehaushalt

Also Published As

Publication number Publication date
LU102208B1 (de) 2022-05-17

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