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
  • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
  • F04D17/08—Centrifugal 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
  • F04D23/00—Other rotary non-positive-displacement pumps
  • F04D23/008—Regenerative 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
  • F04D5/00—Pumps with circumferential or transverse flow
  • F04D5/002—Regenerative pumps
  • F04D5/007—Details of the inlet or outlet
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
  • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
  • F05B2250/00—Geometry
  • F05B2250/50—Inlet or outlet
  • F05B2250/503—Inlet or outlet of regenerative pumps

Definitions

• the invention relates to a turbomachine with egg ⁇ nem housing, an arranged in the housing Elektromo ⁇ tor, wherein the electric motor comprises a stator and a rotor arranged on a shaft, at least one driven by the shaft impeller with at least one ring of blade chambers bounding blades, which is arranged in a pump housing, and disposed in the pump housing and each a ring of vane chambers opposite side channel extending from a pump inlet to a pump outlet.
• Such turbomachines have long been known and are used for conveying liquids, in particular fuel, or for conveying gases, in particular air.
• the pumped medium is ⁇ sucked and discharged through the side channel and the blade chambers to the pump through the pump inlet.
• the flow rule Zvi ⁇ side channel and vane chambers circulates.
• the disadvantage is that flow losses occur during the transition to or from the circulation flow.
• the invention is therefore based on the object to provide a Strö ⁇ tion machine, which has lower Strömungsver ⁇ losses.
• the object is achieved in that at the end of the soka ⁇ nals in the radially inner half of the side channel Ram ⁇ pe is arranged, which increases from the channel bottom in Strö ⁇ tion direction up to the height of the pump housing wall ⁇ and the side channel with its radial outside lie ⁇ half in the pump outlet merges.
• the part of the circulation ⁇ flow which enters the side channel, redirected.
• the side channel ⁇ de part of the circulation flow to the pump since the side-channel only passes with its radially outer half in the pump outlet.
• An extended effective sokanalkar is achieved according to another embodiment in that the ramp is offset in the flow direction, so that overlap the arrangement of the ramp and the mouth of the side channel in the pump ⁇ outlet seen in the flow direction. If turbulences form during the transition from the side channel into the pump outlet, these can be minimized by the fact that the diameter of the mouth of the side channel in the pump outlet widens continuously in the flow direction to a larger diameter of the pump outlet. Due to the cross-sectional enlargement, a calming of the flow, the slight pressure losses are negligible.
• Fig. 1 shows a section through a turbomachine
• the turbomachine in FIG. 1 has a housing 1 in which an electric motor 2 is arranged.
• the electric motor 2 comprises a stator 3 and a on a shaft 5 is arranged ⁇ rotor 4.
• the shaft 5 drives an impeller 6, wel ⁇ ches is arranged in a pump housing.
• the pump housing ⁇ housing consists of a pump 8 and a pump bottom end ⁇ ckel 9 beab- from each other by a spacer ring 10 are standet.
• the impeller 6 includes on its the Pump ⁇ pendeckel 9 side facing a wreath of blade chambers bounding blades 11.
• In the pump cover 9 of the pump housing 7 is the wreath of blade chambers opposite a side channel 12 assigned.
• the side channel 12 extends from a pump inlet 13 to a pump outlet 14, both of which are arranged in the pump cover 9.
• Pump inlet 13 and pump outlet are usually side by side and are both relocated to the drawing plane for ease of illustration.
• the vane chambers and the side channel 12 each have a semi-circular
• Figure 2 shows the side channel 12 with the pump outlet 14 in the form of a separate component by being cut out of the pump cover 9 of the pump housing 7.
• the hatched area shows the semicircular channel ⁇ cross-section.
• a ramp 15 is arranged in the radially inner half 18 of the side channel 12.
• the ramp 15 rises from the channel bottom 17 starting in the flow direction up to the height of the pump housing wall 16, wherein the ramp 15 is concavely curved in the direction of the impeller, not shown.
• With its radially outer lie ⁇ constricting half 19 of the side channel 12 goes into the pump exit passage via fourteenth
• the ramp 15 and the mouth of the side channel 12 in the pump outlet 14 are arranged seen overlapping in the flow direction.
• At the side channel 12 is followed in the flow direction of the scraper 20 and then the pump inlet, not shown.

Landscapes

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

Applications Claiming Priority (2)

Publications (1)

Family

ID=49765467

Family Applications (1)

Country Status (7)

Citations (2)

Family Cites Families (10)

• 2012
  • 2012-12-05 DE DE102012222336.3A patent/DE102012222336B4/de not_active Expired - Fee Related
• 2013
  • 2013-11-28 JP JP2015545740A patent/JP6104402B2/ja active Active
  • 2013-11-28 KR KR1020157014577A patent/KR102122623B1/ko active IP Right Grant
  • 2013-11-28 CN CN201380063823.2A patent/CN104919185B/zh not_active Expired - Fee Related
  • 2013-11-28 US US14/649,085 patent/US10718335B2/en active Active
  • 2013-11-28 EP EP13805301.2A patent/EP2929192A1/de not_active Withdrawn
  • 2013-11-28 WO PCT/EP2013/074990 patent/WO2014086658A1/de active Application Filing

Patent Citations (2)

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events