Elevator group and method for controlling an elevator group

• US 20090250298A1
• Filed: 06/11/2009
• Published: 10/08/2009
• Est. Priority Date: 03/11/2005
• Status: Active Grant

• Current Assignee: Esko Aulanko, Janne Sorsa, Marja-Liisa Siikonen
• Original Assignee: Esko Aulanko, Janne Sorsa, Marja-Liisa Siikonen
• Inventors: Sorsa, Janne, Siikonen, Marja-Liisa, Aulanko, Esko
• Granted Patent: US 7,913,819 B2
• Time in Patent Office: Days
• US Class Current: 187/393
• CPC Class Codes: B66B 1/18 with means for storing pulses controlling the movements of several cars or cages B66B1/2458 takes precedence
• CPC Class Codes: B66B 11/007 for counterweightless elevators
• CPC Class Codes: Y02B 50/00 Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies

Abstract

A set of elevators, e.g. an elevator group, is connected to a common power supply. The elevators are controlled by a common control system so that an elevator car having stopped is prevented from being dispatched in the up direction if, of the elevator cars of the elevators connected to the common power supply, more cars are moving upwards than are moving downwards.

Claims

1. A set of elevators, preferably an elevator group, comprising a number of elevators without counterweight having a common connection to a power supply, wherein in that the elevators have a common control system which contains an instruction to prevent and/or delay the dispatch of an elevator car having stopped at a floor and/or to command the elevator to be driven with reduced acceleration if at the instant and/or within a set period of time the power consumed from the electric network or fed into the electric network by the set of elevators together exceeds a set value.

2. A method for controlling a set of elevators without counterweight connected to a common power supply, wherein in that an examination is performed to determine whether at the instant and/or within a set period of time the power consumed from the electric network or fed into the electric network by the set of elevators together exceeds a set value, and if this is the case, then the departure of the next elevator car to be dispatched is prevented or delayed or this elevator car dispatched with a reduced acceleration.

3. A method according to claim 2, wherein in that the final speed of the elevator car to be dispatched is limited.