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MOTOR PUMP UNIT

  • US 20120034112A1
  • Filed: 08/04/2011
  • Published: 02/09/2012
  • Est. Priority Date: 02/13/2009
  • Status: Active Grant
First Claim
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1. Motor pump unit for a high-pressure cleaning apparatus having a liquid-cooled electric motor and a pump, wherein the electric motor has a motor housing that is surrounded by a cylindrical shell shaped cooling housing with an annular space having an annular space inlet and an annular space outlet formed therebetween, and wherein the pump has a suction inlet connected to the annular space outlet for drawing in liquid and a pressure outlet for discharging liquid, and wherein the liquid to be transported by the pump is suppliable to the annular space inlet and wherein the cooling housing, on its inside, comprises at least one flow guide rib for guiding the liquid within the annular space, wherein the at least one flow guide rib is spaced-apart from the motor housing.

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