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
  • F04D29/00—Details, component parts, or accessories
  • F04D29/04—Shafts or bearings, or assemblies thereof
  • F04D29/046—Bearings
• • 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
• • 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
  • F04D29/40—Casings; Connections of working fluid
  • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
  • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid 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
  • F04D29/00—Details, component parts, or accessories
  • F04D29/58—Cooling; Heating; Diminishing heat transfer
  • F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid 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
  • F04D29/00—Details, component parts, or accessories
  • F04D29/60—Mounting; Assembling; Disassembling
  • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
  • F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps

Definitions

• the invention relates to a centrifugal pump with a spiral housing.
• the invention is further focused on the use of the centrifugal pump.
• Centrifugal pumps with spiral housings are known.
• DE 103 47 302 Al a two-part volute casing for a centrifugal pump is described, which is designed optimized flow.
• Such centrifugal pumps are usually driven by an electric motor, wherein the stator of the electric motor are arranged in a drying room and the rotor in a wet room. The rotor thus rotates in the wet space, which is surrounded by the flowing medium to be pumped.
• the drying space and the wet space are separated by a separately arranged can, wherein it is disadvantageously necessary to arrange sealing elements between the one part of the spiral housing and the can, in order to prevent the entry of liquid or steam from the wet space into the drying space.
• sealing elements between the one part of the spiral housing and the can, in order to prevent the entry of liquid or steam from the wet space into the drying space.
• the invention is therefore based on the object, a
• a centrifugal pump with a spiral housing which consists of a first housing part and a second housing part, in which the second housing part is formed in the central region continuous cup-shaped for receiving the rotor located in the wet space N and forms a bearing for the rotatable mounting of the rotor in the cup-shaped bottom part, wherein the second housing part outside in the area of the rotor in the drying space T a stator is arranged.
• the second housing part is formed cup-shaped throughout in the central region, which means that it forms a nearly cylindrical part with a final bottom around the longitudinal axis.
• the cup-shaped design of the wet space N is defined, which is provided for receiving the rotor.
• the second housing part forms in the cup-shaped bottom part of a bearing for the rotatable mounting of the rotor, wherein the cup-shaped bottom part either itself serves as a bearing or is provided only for receiving a bearing for the rotor.
• the second housing part in the outer region has a longitudinally arcuate boundary perpendicular to the flow direction of the medium flowing from the inlet E.
• the exact arcuate course is thereby optimized aerodynamically by an engineering design. This can be advantageously a set optimal adjustment of the flow conditions in the volute, so that the required space for the centrifugal pump can be advantageously reduced.
• the invention further relates to the use of the centrifugal pump as a cooling water centrifugal pump in a motor vehicle. Coolant centrifugal pumps in motor vehicles must function properly for a long time, whereby damage to electronic components in the drying room T must be prevented. The use of the centrifugal pump as a cooling water centrifugal pump in a motor vehicle is thus particularly advantageous.
• Fig. 1 shows the centrifugal pump in longitudinal section.
• Fig. 2 shows the centrifugal pump in longitudinal section in the form of an exploded view.
• Fig. 3 shows a centrifugal pump in longitudinal section according to the prior art.
• the centrifugal pump is shown in longitudinal section. It consists of a spiral housing, which consists of a first housing part 1 and a second housing part 2, wherein the second housing part 2 is formed in the central region continuously cup-shaped for receiving the located in the wet space N rotor 3.
• the second housing part 2 has in the cup-shaped bottom part 2 'on a bearing 3' for the rotatable mounting of the rotor 3.
• a stator 4 is arranged outside in the area of the rotor 3 in the drying space T.
• the drying room T is externally closed by a housing 5 from the environment.
• the second housing part 2 has in the outer region an arcuate longitudinal boundary 2 * perpendicular to the flow direction of the Entry E flowing medium on.
• the flowing medium is shown with a thick arrow.
• the arcuate boundary 2 * the flow conditions are optimized in the interior of the spiral housing. An entry of liquid or vapor from the wet space N in the drying room T is avoided even without the arrangement of sealing elements, so that electronic components (not shown) and the stator 4 are protected in the drying room from damage by liquid or vapor.
• the centrifugal pump is shown in longitudinal section in the form of an exploded view.
• the second housing part 2 is formed in the central region throughout cup-shaped for receiving the rotor 3.
• the wet space N (not shown) defined by this central region is thus completely shielded from the drying space T (not shown) in which the stator 4 is located.
• a centrifugal pump is shown in longitudinal section according to the prior art. The centrifugal pump after the
• the prior art has a spiral housing, which consists of a first housing part Ib and a second housing part 2b.
• a spiral housing which consists of a first housing part Ib and a second housing part 2b.
• the inlet Eb liquid to be conveyed medium represented by the thick arrow, enters the wet space Nb, in which the rotor 3b is rotatably mounted.
• a stator 4b is arranged externally in the drying space Tb.
• the drying space Tb is closed by a housing 5b from the environment.
• the separation of the wet space Nb from the drying space Tb is carried out according to the prior art by the arrangement of a can 6b, wherein optionally an entry of liquid from the wet space Nb in the drying space Tb can be done by a disadvantageous arrangement of a sealing ring 7b, which between the can 6b and the second housing part 2b is to be arranged.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Structures Of Non-Positive Displacement Pumps (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=39332206

Family Applications (1)

Country Status (6)

Families Citing this family (5)

Family Cites Families (11)

• 2007
  • 2007-03-01 DE DE102007010050A patent/DE102007010050A1/de not_active Withdrawn
• 2008
  • 2008-02-08 EP EP08708837A patent/EP2054628A1/de not_active Ceased
  • 2008-02-08 CN CN200880005959A patent/CN101617124A/zh active Pending
  • 2008-02-08 JP JP2009551158A patent/JP2010520396A/ja not_active Withdrawn
  • 2008-02-08 US US12/529,455 patent/US20100111687A1/en not_active Abandoned
  • 2008-02-08 WO PCT/EP2008/051570 patent/WO2008104451A1/de active Application Filing

Non-Patent Citations (1)

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