Patent ID: 8348640
Filing Date: 2013-01-08
Classification: F04D,H02K

Abstract:
1. A closure bottom plate for a centrifugal electric pump comprising a box-shaped containment body associated to a head, said closure bottom plate comprising: a cup-shaped motor cover arranged to close the end of the box-shaped containment body oppositely arranged with respect to the head, said motor cover having a coupling opening; a connector-holder cover, associable in a mounted configuration to said coupling opening, comprising fixing means conceived to hold, at said mounted configuration, at least one electrical connector in a preset position for connection to the electric pump; said bottom plate having an internal aeration path, intended to allow circulation—by natural convection—of air which is heated during the operation of the electric pump thus preventing the formation of condensate inside the bottom plate, said internal aeration path being extended between at least one inlet opening arranged on the motor cover and one outlet opening and successively crossing the internal volume of the motor cover, said coupling opening, and a labyrinth defined by the connector-holder cover, said labyrinth being a path comprising at least one bend so as to prevent the entry of liquid due to splashes or sprays from the outside.