| 摘要 |
A motor pump unit for a high-pressure cleaning unit with the motor (2) and the pump (3) placed in line with one another inside a common housing (1). The housing (1) is designed with a double wall (10, 11) extending, at least, along the longitudinal section of the housing in which the pump (2) and the motor (3) are placed. The hollow space (12) in the double wall (10, 11) delimits a flow channel for the relatively cold pressure liquid supplied from the pump. In the hollow space in the double wall there is moreover placed a helical coil (15). By means of the double wall, efficient cooling of the motor pump unit is obtained without the use of flow channels incorporated in cast motor housings.
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