Abstract: In order to provide a circulation pump for a conveyed liquid, comprising an electric motor, which is electronically commutated and has a rotor, a stator and a motor circuit, and an impeller that is connected in a rotationally fixed manner to the rotor, with advantageous properties, it is provided that the electric motor has an evaluation device, by means of which a flow rate of conveyed liquid through the circulation pump can be determined from a rotational speed of the rotor and/or a power consumption of the electric motor, and at least one signal output is provided, at which a flow rate signal and/or flow rate-dependent switching signal can be supplied by the circulation pump.
Type:
Application
Filed:
October 30, 2008
Publication date:
May 14, 2009
Applicants:
Karsten LAING, Oliver LAING, Birger LAING
Abstract: An electric motor comprising a rotor and a stator is disclosed. The rotor is supported on a substantially spherical bearing and is of a substantially spherical design facing the stator, which has a high degree of efficiency. The stator may have a magnetic return-path body which is made of a compressed powder material. The return-path body may be of a substantially spherical design, at least in segments facing the rotor.
Type:
Grant
Filed:
March 2, 2007
Date of Patent:
November 4, 2008
Assignee:
Oliver Laing, Karsten Laing, Birger Laing
Abstract: A circulator pump-motor unit which has an impeller assembly that can selectively tilt between two positions is disclosed. Each of the two positions corresponds to aligning a suction port with one of two inlet ports. The unit can be used to, for example, change the path of hot water conveyed between these ports so that either a hot water system or a hydronic system gets heat.
Type:
Application
Filed:
September 22, 2003
Publication date:
March 25, 2004
Applicant:
Oliver Laing, Karsten Laing, and Birger Laing