Pierburg Gmbh

Pierburg Ag

Rainer Peters

Gunter Van De Venne

Klaus Muckelmann

Michael Bonse

Matthias Boutros-Mikhail

Berthold Herrmann

Frank Kemmerling

Gunter Van Venne

Thomas RÖSGEN

Björn Jonas Ozdyk

Mario Kilzer

Martin Miokowski

Andreas Bumbel

Jakob Gehlen

A side-channel blower for an internal combustion engine includes a flow housing, an impeller which rotates in the flow housing, a drive unit which drives the impeller, a housing wall with a radially delimiting housing wall, impeller blades arranged in a radially outer region of the impeller, a radial gap arranged between the impeller and the housing wall, an inlet, an outlet, and two flow channels. The housing wall radially surrounds the impeller. The impeller blades open in a radially outward direction. The two flow channels connect the inlet to the outlet and are fluidically connected to one another via intermediate spaces between the impeller blades. An interruption zone is arranged between the outlet and the inlet which interrupts the two flow channels in a peripheral direction. A radial interrupting gap is arranged between the impeller and the radially delimiting housing wall in the entire interruption zone.

Side-channel blower for an internal combustion engine, comprising a wide interrupting gap

A side-channel blower for an internal combustion engine includes a flow housing, an impeller which rotates in the flow housing, a housing wall which surrounds the impeller, a drive unit which drives the impeller, impeller blades arranged in a radially outer region of the impeller, a radial gap arranged between the impeller and the housing wall, an inlet, an outlet, two flow channels which connect the inlet to the outlet, and an interruption zone arranged between the outlet and the inlet which interrupts the two flow channels in a peripheral direction. The impeller blades open in a radially outward direction. A respective one of the two flow channels is respectively formed axially opposite to the impeller blades in the flow housing. The impeller blades each comprise a V-shaped cross-section.

Side-channel blower for an internal combustion engine

A side channel blower includes a housing comprising a substantially tangential outlet. A housing cover comprises an axial inlet. At least one conveying duct is configured so that the axial inlet fluidly communicates with the outlet. An impeller is driven by a drive unit. The impeller is rotatably supported in the housing and comprises conveying blades which cooperate with the at least one conveying duct. An interruption region is arranged between the outlet and the axial inlet. The interruption region comprises a radially limiting wall and interrupts the at least one conveying duct in a circumferential direction. A first recess is arranged in the radially limiting wall of the interruption region downstream of the outlet. Further recesses are arranged in the interruption region before the axial inlet and after the outlet. A smallest distance between the further recesses is 0.5 to 3 times a distance between two conveying blades.

Side channel blower, in particular a secondary air blower for an internal combustion machine

An improvement in an electrical air pump having a housing with a pump mechanism at one end and an electric motor at the other end. The pump mechanism has at least one lightweight pump impeller made of plastic whose hub is press-fit on a shaft of the electric motor. The hub is provided with a plurality of grooves distributed around a bore in the hub which receives the motor shaft. The grooves form spaces between an inner surface of the hub and an outer surface of the shaft and the spaces are filled with an adhesive to bond the hub to the shaft. The grooves extend longitudinally or spirally along the entire length of the hub. The grooves are relatively shallow and have a depth of approximately 0.05 mm.

Connection between a rotor hub and a shaft of an electric motor of an

An electrical air pump adapted for being periodically turned on and off and reversed in pumping direction. The air pump includes an electric motor adapted for electronic control and an air pump section joined by a housing as a common system. The housing has a cylindrical wall defining a first chamber in which the stator system is received and a scaling cover is engaged with the housing to seal the first chamber. The air pump section includes a pump cover sealingly engaged with the housing and defining therewith a second chamber, the rotor being of bell shape and rotatably supported in the second chamber on a pin secured in the housing and in the pump cover. The rotor is disposed with slight clearance adjacent to an end wall of the housing and the rotor projects radially beyond the cylindrical wall. The rotor has a collar and a plurality of pumping blades extending radially from the collar into an annular pumping channel of the second chamber. The pump cover has two connections, one for aspirating air and the other for discharging air under pressure, connected to the annular channel and angularly spaced from one another. The pump cover has a wall with a separating section of locally increased thickness between the two connections.

Electrical air pump adapted for being periodically turned on and off and

An electrically driven air pump having a housing containing a pump unit driven from a shaft of an electric motor, the pump unit including two impellers made of plastic having hubs which are press-fit on the shaft of the electric motor. A collar is also press-fit on the shaft and abutting against the hub of one impeller on a side thereof facing the electric motor, and a lock ring made of metal is press-fit on the shaft and abuts against the hub of the other impeller on a side thereof facing away from the electric motor thereby to clamp the impellers between the collar and the lock ring. The lock ring and the hub of the adjoining impeller are formed at their mutually abutting surfaces with a tooth and groove arrangement to prevent relative rotary movement therebetween. A similar tooth and groove arrangement can be provided between the abutting surfaces of the impellers and between the abutting surfaces of the collar and the adjoining impeller.

Impeller mounting for electrically driven air pump to reduce vibration

An electrically driven air pump having a pump mechanism in a first section of a housing and an electric motor in a second section of the housing in driving engagement with the pump mechanism. First and second end covers are sealingly secured on the housing. The electric motor is supported by elastomer rings in the housing. The pump mechanism has two axially spaced rotor wheels secured on the drive shaft of the motor and a stator wheel between the rotor wheels. The electric motor is balanced, in situ, in its mounted state by adjusting that one of the rotor wheels which is exposed in the housing prior to installation of the end cover on the first section of the housing. After the motor is balanced, the end cover is press fit on the housing and stator wheel to form air-tight, friction fit seal joints therebetween in which the engaged parts which are deformed elastically or plastically.

Electrically driven air pump having a drive motor balanced in situ

An electrically driven air pump having a pump mechanism in a first section of a housing and an electric motor in a second section of the housing in driving engagement with the pump mechanism. First and second end covers are sealingly secured on the housing. The electric motor is supported by elastomer rings in the housing. The pump mechanism has a rotor wheel driven by the motor and a stator wheel adjacent to the rotor wheel. A first lock joint is formed between the first cover and both the stator wheel and the housing and a second lock joint is formed between the second cover and the housing. The covers, stator wheel and housing are made of plastic material and the lock joints are formed by air-tight, friction-fit between the engaged parts which are deformed elastically or plastically.

Growing community of inventors

Goch, Germany

Rainer Peters