Pump comprising an integrated engine

An electric motor and integrated technology, applied in liquid fuel engines, parts of pumping devices for elastic fluids, machines/engines, etc., can solve problems such as damage to sliding bearings and rotor chambers, single-sided wear of sliding bearings, etc.
CN1826470AActive Publication Date: 2006-08-30BOSCH SIEMENS HAUSGERATE GMBH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BOSCH SIEMENS HAUSGERATE GMBH
Publication Date
2006-08-30

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Abstract

The single-part chamber (4) of the pump (1) surrounds a motor rotor (5).
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Description

technical field

[0001] The invention relates to a pump with an integral electronically commutated wet rotor motor. Background technique

[0002] In conventional constructions of pumps with integral electronically commutated motors, the shaft rotates together with the rotor of the motor in the rotor chamber, while the impeller of the pump rotates in the hydraulic chamber. Between the two chambers is the bearing endshield with the plain bearing for supporting the shaft and the sealing rubber to protect the plain bearing from water contamination and corrosion. The bearing cover prevents water flow from the hydraulic chamber into the rotor chamber. If the sealing rubber fails, water can enter the rotor chamber. Damage to plain bearings and rotor chambers can occur due to contamination and erosion by water. Furthermore, conventional constructions have the disadvantage that the slide bearings are subject to one-sided wear due to the weight of the rotor. Contents of the invent...

Claims

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