Geraete- Und Pumpenbau Gmbh Dr. Eugen Schmidt

Gpm Gerate-Und Pumpenbau Gmbh

Ger&auml;te-Und Pumpenbau Gmbh Dr. Eugen Schmidt

Gerate- Und Pumpenbau Gmbh Dr. Eugen Schmidt

Frank Blaurock

Eugen Schmidt

Franz Pawellek

Peter Amm

Juergen Hahn

A blade wheel consisting of sheet metal for use in motor vehicle refrigerant pumps has blades that are cut out of a disk and pitched and base disk segments that lie adjacent to the blades and remain between the latter. The blade wheel is formed by at least two different blade wheel elements which are provided with cut out, pitched blades, are interconnected in a fixed manner and are arranged so that their respective base disk segments are offset in relation to one another, forming a gap therebetween, the elements thus forming a common bottom disk. A hub sleeve is provided in the center of one of these blade wheel elements (the hub disk), and the center of the other blade wheel element or elements (the bore disk or disks) is provided with a hub sleeve receiving bore, which can be pushed onto the casing of the hub sleeve.

Blade wheel

A bearing arrangement for pump bearings mounted in plastic housings, in particular for coolant pumps, comprises a radial housing groove that is provided with an inlet bore, the groove being arranged in the coolant pump housing. A bearing groove located opposite the housing groove in the final mounted condition is provided on the bearing ring arranged in the bearing seat. This arrangement can be manufactured and mounted in a simple manner, permits tempering of the plastic housing, always ensures a high degree of efficiency of the pump with minimal manufacturing and installation expenditure, and permits the use of bearings as pump bearings with minor play of the bearing with a longer service life, low development of noise, and relief of the shaft sealing gasket, and many other benefits. The bearing arrangement always ensures high transmission of the axial forces from the pump bearing to the pump housing, combined with an optimal geometry of the sealing gap, and permits removal of the pump bearing without damaging the plastic housing, and, at the same time, reduces the recycling costs.

Bearing arrangement

An electrically powered coolant pump particularly suited for an internal combustion engine has a pump housing having an elongate shape which encloses a pump wheel on the inlet side and subsequently downstream therefrom encloses an electric motor. An annular flow passage for the coolant is formed between the pump housing and the outside of the electric motor. The electric motor is encapsulated against the coolant, and the structural component of electric motor and pump wheel is retained in the axial range of the electric motor with at least one web in the pump housing through which connections for driving the electric motor are routed. The electric motor is cooled by the coolant flowing by, and may therefore be operated at very high rotational speeds, so that a small structural size and a low weight may be realized. Widely varying installation locations for the coolant pump are therefore possible.

Electrically powered coolant pump

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Schleusingerneundorf, Germany

Frank Blaurock