EP3560872A1 - Verfahren zur elektrischen leistungsübertragung in einem aufzug und aufzug - Google Patents

Verfahren zur elektrischen leistungsübertragung in einem aufzug und aufzug Download PDF

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Publication number
EP3560872A1
EP3560872A1 EP18169527.1A EP18169527A EP3560872A1 EP 3560872 A1 EP3560872 A1 EP 3560872A1 EP 18169527 A EP18169527 A EP 18169527A EP 3560872 A1 EP3560872 A1 EP 3560872A1
Authority
EP
European Patent Office
Prior art keywords
elevator
door
elevator car
electrical power
electrical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP18169527.1A
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English (en)
French (fr)
Inventor
Tero Hakala
Jukka Turpeinen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kone Corp
Original Assignee
Kone Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kone Corp filed Critical Kone Corp
Priority to EP18169527.1A priority Critical patent/EP3560872A1/de
Publication of EP3560872A1 publication Critical patent/EP3560872A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/02—Door or gate operation
    • B66B13/12—Arrangements for effecting simultaneous opening or closing of cage and landing doors
    • B66B13/125—Arrangements for effecting simultaneous opening or closing of cage and landing doors electrical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system

Definitions

  • the invention concerns in general the technical field of elevators.
  • the invention concerns especially, however, not exclusively, electrical power transfer in elevators.
  • Elevators have traditionally been operated by utilizing a hoisting motor coupled to a hoisting rope or ropes for moving the elevator car within the hoistway or the elevator shaft, and a wired power line or lines, such as traveling electrical cables, routed to the elevator car for providing electrical power to the electrical equipment arranged to the elevator car.
  • a hoisting motor coupled to a hoisting rope or ropes for moving the elevator car within the hoistway or the elevator shaft
  • a wired power line or lines such as traveling electrical cables
  • elevators are often installed in targets in which the travel height of an elevator car of the elevator may be such that the mechanical strength of the ropes and/or electrical cable may be exceeded, such as in case of very high buildings.
  • multicar elevators that is, elevators having more than one elevator car in operating in its elevator shaft, will face similar challenges with respect to the electrical cabling.
  • An objective of the present invention is to provide a method for electrical power transfer in an elevator and an elevator. Another objective of the present invention is that the method simplifies electrical power transfer in elevators, especially, between the elevator shaft and the elevator car.
  • a method for transferring electrical power in an elevator comprises an elevator shaft and an elevator car movable with respect to the elevator shaft.
  • the method comprises coupling an elevator car door of the elevator car with a landing door of the elevator shaft with a door coupler, and establishing an electrical connection for transferring electrical power between the elevator car and the elevator shaft by utilizing the door coupler.
  • the utilizing may herein entail, for example, forming the electrical connection, such as a galvanic connection, through the door coupler, or generating a coupling signal once the coupling has occurred which may then be utilized in establishing the electrical connection.
  • the method may comprise transferring electrical power between the elevator car and the elevator shaft through the electrical connection.
  • the method may comprise establishing the electrical connection as a galvanic connection.
  • the galvanic connection may, preferably, be established through the door coupler.
  • the method may comprise establishing the electrical connection as a wireless connection for transferring electrical power wirelessly.
  • the method may comprise generating a coupling signal with the door coupler.
  • the method may comprise controlling a separate electrical power transfer device arranged to the elevator and configured to establish the electrical connection based on the coupling signal.
  • the method may comprise transferring electrical power when the elevator car is at a landing floor. There may be one or several landing floors comprised in the elevator shaft.
  • the establishing may comprise establishing the electrical connection for charging an electrical energy storage, such as a battery, comprised in the elevator car.
  • an elevator comprising an elevator shaft, a door coupler and an elevator car movable with respect to the elevator shaft.
  • the elevator car comprises an elevator car door.
  • the elevator shaft comprises a landing door.
  • the door coupler is arranged to couple the elevator car door and the landing door with each other and is configured to be utilized in establishing an electrical connection between the elevator shaft and the elevator car for transferring electrical power between the elevator shaft and the elevator car.
  • the door coupler may be configured to establish the electrical connection, such as a galvanic connection.
  • the door coupler may be configured to generate a coupling signal for controlling a separate electrical power transfer device forming the electrical connection.
  • the elevator may comprise a separate electrical power transfer device for establishing the electrical connection.
  • the electrical connection may be a wireless connection for transferring electrical power wirelessly, such as by utilizing an inductive coupling.
  • the elevator car may comprise an electrical energy storage, such as a battery, and wherein the electrical connection is established for charging the electrical energy storage.
  • an electrical energy storage such as a battery
  • an elevator comprising an elevator shaft with at least two landings, each landing having at least one landing door.
  • the elevator further comprises an elevator car movable between landings, the elevator car having at least one elevator car door.
  • the elevator also comprises a power supply device for supplying power from at least one of the landings to the elevator car, the power supply device comprising separate primary and secondary parts, which are configured to establish electrical power connection between the primary part and the secondary part when arranged at corresponding positions, wherein at least one of the landing doors comprises the primary part and the car door comprises the secondary part.
  • the present invention provides a method for transferring electrical power in an elevator and an elevator.
  • the method provides advantages over known solutions such that the method facilitates the electrical power transfer by utilizing a door coupler arranged to the elevator.
  • the door coupler is arranged to the elevator for coupling the elevator car door to the landing door, there is no need for additional components to be utilized in establishing the electrical connection between the elevator shaft and the elevator car.
  • a plurality of refers herein to any positive integer starting from two, e.g. to two, three, or four.
  • first and second do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.
  • FIG. 1 illustrates schematically an elevator 100 according to an embodiment of the present invention from a side view.
  • the elevator 100 may comprise an electric motor 16 for moving an elevator car 10 comprised in the elevator 100.
  • the elevator car 10 may be mechanically coupled to the electric motor 16, for example, by a hoisting rope 15, hydraulic means (not shown) or in more direct manner such as in case of a linear motor 16.
  • the operation of the electric motor 16 may be controlled by an electrical drive 24 such as a frequency converter or an inverter.
  • the elevator shaft 13 of the elevator 100 may comprise walls 17 or structures 17 defining the elevator shaft 13.
  • the shaft 13 may essentially define a closed volume, however, it may also comprise an open structure having, preferably, at least two landing floors or landings.
  • the landing floor may comprise a sill 19.
  • the elevator car floor level 20 may advantageously be arranged to substantially level or align with the floor level of the landing floor when stopped at the landing floor.
  • the electric motor 16 may be arranged to the elevator shaft 13 and configured to move the elevator car 10 by a hoisting rope 15.
  • the electric motor 16 may be a linear electric motor comprising a stator beam 21 arranged in fixed manner to the elevator shaft 13, and mover 22 or movers 22 mounted on the elevator car 10 and arranged to be in electromagnetic engagement with the stator or stators of the stator beam 21.
  • the elevator 100 may preferably comprise a door coupler 18 configured for coupling the elevator car door 11 and the landing door 12 to each other.
  • the door coupler 18 may comprise a coupling portion and a counterpart with which the coupling portion is configured to couple with.
  • the coupling portion may be mounted on the elevator car door 11 and configured to couple with the counterpart mounted on the landing door 12 for establishing the coupling for opening and/or closing said doors.
  • the coupling portion may be mounted on the landing door 12 and configured to couple with the counterpart mounted on the elevator car door 12 for establishing the coupling for opening and/or closing said doors.
  • the door coupler 18, particularly its components, may be so fitted that when the elevator car 10 moves past the landing door 12, the counterpart, such as element(s) extending or protruding from the landing door 12, preferably towards the elevator car door 11, for example, rollers, engage with the gripping elements of the coupling portion, which are mounted on the elevator car door 11.
  • the gripping elements may be, for example, vanes.
  • the door coupler 18 may essentially be similar to any one of the door couplers disclosed in figures 5-10 and in the description related to said figures of patent publication US 5950766 A , however, the door coupler 18 according to the present invention may differ from the ones disclosed in US 5950766 A .
  • the door couplers 18 may or may not be configured to form a galvanic connection or a current pathway through the door coupler 18.
  • the elevator car 10 may comprise an electrical energy storage 14, such as a battery 14 and, optionally, a supercapacitor.
  • the electrical energy storage 14 may be coupled to the motor 16, for example, to a mover 22 of an electrical linear motor 16.
  • the electrical energy storage 14 may alternatively or in addition by used for providing electrical energy to various electrical equipment 25 or appliances 25 comprised in the elevator car 10, such as lighting, user interfaces, electrical appliances, etc.
  • the elevator 100 may further comprise an electrical power source 23, such as a main electrical power supply from which or via an electrical drive or a converter electrical power may be drawn to operate the electric motor 16 and/or the electrical equipment or appliances of the elevator car 10 and/or to supply current to charge the electrical energy storage 14, if any.
  • an electrical power source 23 such as a main electrical power supply from which or via an electrical drive or a converter electrical power may be drawn to operate the electric motor 16 and/or the electrical equipment or appliances of the elevator car 10 and/or to supply current to charge the electrical energy storage 14, if any.
  • the elevator 100 may comprise an elevator control unit 1000.
  • External units may comprise wireless connection or a connection by a wired manner.
  • the communication interface provides interface for communication with external units such as the elevator car 10, the electric motor 16, the elevator car doors 11 or the landing doors 12 of the landing floors, or the electrical drive 24 to the elevator control unit 1000.
  • the elevator control unit 1000 may comprise one or more processors, one or more memories being volatile or non-volatile for storing portions of computer program code and any data values and possibly one or more user interface units.
  • the mentioned elements may be communicatively coupled to each other with e.g. an internal bus.
  • the processor of the elevator control unit 1000 is at least configured to implement at least some method steps as described hereinlater.
  • the implementation of the method may be achieved by arranging the processor to execute at least some portion of computer program code stored in the memory causing the processor, and thus the elevator control unit 1000, to implement one or more method steps as described hereinlater.
  • the processor is thus arranged to access the memory and retrieve and store any information therefrom and thereto.
  • the processor herein refers to any unit suitable for processing information and control the operation of the elevator control unit 1000, among other tasks.
  • the operations may also be implemented with a microcontroller solution with embedded software.
  • the memory is not limited to a certain type of memory only, but any memory type suitable for storing the described pieces of information may be applied in the context of the present invention.
  • FIG. 2 illustrates schematically an elevator 100 according to an embodiment of the present invention viewed from above.
  • the elevator 100 in Fig. 2 may comprise similar features as shown in Fig. 1 .
  • Fig. 2 it is shown in Fig. 2 that there may be two landing doors 11 and two elevator car doors 12, that is, double doors.
  • a sliding door type of a double door has been shown for landing doors 12 and elevator car doors 11.
  • both of the doors of the double doors comprise a door coupler 18, that is, comprising a coupling portion and a counterpart, it may as well be such that only one of them comprises the door coupler 18 and the other door is coupled to the door having the door coupler by a coupling mechanism, such as by a belt, for instance.
  • FIG 3 illustrates schematically various stages of the opening movement of elevator car doors 11 and landing doors 12 coupled with each other by a door coupler 18 according to an embodiment of the present invention.
  • the doors 11, 12 are fully closed and the elevator car 10 is at a landing floor, for instance.
  • the door coupler 18 has coupled the elevator car doors 11 and the landing doors 12 to each other by the coupling portion and the counterpart.
  • the elevator car doors 11 are being opened by an actuator mechanically coupled to the elevator car doors 11.
  • the door coupler 18 thus moves the landing doors 12 relative to the movement of the elevator car doors 11 due to the coupling between said doors 11, 12.
  • the doors 11, 12 are fully opened.
  • FIG 4 illustrates schematically an electrical power transfer arrangement 200 of the elevator 100 according to an embodiment of the present invention.
  • the door coupler 18 has coupled the elevator car door 11 and the landing door 12 to each other and established an electrical connection 40, in this case a galvanic connection between the landing door 12 and the elevator car door 11.
  • the galvanic connection may be utilized for transferring electrical power from the main power supply 23 to the elevator car 10, for example, to charge the electrical energy storage 14 thereof.
  • the electrical connection 40 may alternatively or in addition be established to any component of the elevator car 10 into which the electrical power is to be transferred.
  • the door coupler 18 establishes the electrical connection 40 between the doors 11, 12, an electrical connection, galvanic or wireless, may still need to be arranged between the landing door 12 and the elevator shaft 13 and/or the main power supply 23 or any other electrical power source utilizable in the elevator 100. Similar remark may be made regarding the electrical connection between the elevator car door 11 and the elevator car 10 and/or the electrical energy storage 14 thereof in order to establish the whole current pathway from the electrical power source 23 to the elevator car 10. At the doors 11, 12 are arranged to move, the electrical connections between the doors 11,12 and the elevator shaft 13 and the elevator car 10, respectively, may need to enable the relative movement of the doors 11, 12 with the respective structures.
  • FIG. 5 illustrates schematically an electrical power transfer arrangement 200 of the elevator 100 according to an embodiment of the present invention.
  • the electrical power transfer arrangement 200 may comprise wireless means for transferring electrical power between the doors 11, 12, for example, by inductive coupling.
  • Said means may be comprised in the door coupler 18 such that when the coupling occurs, a coupled inductor 50 is formed by when two inductors having an airgap in order to enable movement with respect to each other are aligned with each other so that magnetic circuit is formed through which electrical power may be transferred between the elevator car door 11 and the landing door 12.
  • the door coupler 18 may be used in various embodiments of the present invention to generate a coupling signal when the coupling occurs.
  • the coupling signal may be used as an indication, for example, in the elevator control unit 1000 or a device controlling the operation of the electrical power transfer arrangement 200 that the electrical connection 40 has been established or at least that the electrical connection may now be established by closing a switch which establishes the electrical connection or the current pathway, for instance.
  • a solid state switch 30 or a mechanical relay or contactor may be arranged to the current pathway 40 such that the switch 30 is closed and current pathway 40 is energized when a sensor associated with door coupler indicates that landing door and car door coupler counterparts are located face to face, that is, aligned or in corresponding positions.
  • Said sensor may be a proximity sensor, such as an inductive proximity sensor, for example.
  • FIG. 6 illustrates schematically an electrical power transfer arrangement 200 of the elevator 100 according to an embodiment of the present invention.
  • the door coupler 18 has coupled the elevator car door 11 and the landing door 12 to each other and established the electrical connection 40.
  • the electrical connection 40 galvanic or wireless, such as by inductive coupling, may be established through a separate electrical power transfer device 60.
  • the device may be positioned in close proximity to the door coupler 18 or may be position a relatively long distance away from the door coupler 18, such to other side of the elevator car 10 as shown in Fig. 6 .
  • the separate electrical power transfer device 60 may comprise, for example, a mechanical contactor which may be controlled by a controlling device 61 in connection with the separate electrical power transfer device 60.
  • the separate electrical power transfer device 60 may comprise an electrical converter for converting the current and voltage suitable for being injected to the elevator car 10, such as for charging the electrical energy storage 14.
  • the separate electrical power transfer device 60 may comprise a coupled inductor 50 for transferring electrical power in wireless manner.
  • the elevator 100 which may comprise at least two landings in the elevator shaft and wherein each landing has at least one landing door, may comprise a power supply device, such as similar to the separate electrical power transfer device 60, for supplying electrical power from at least one of the landings to the elevator car, wherein the power supply device may comprise separate primary and secondary parts, which are configured to establish electrical power connection between the primary part and the secondary part when arranged at corresponding positions.
  • the landing door may comprise the primary part and the car door may comprise the secondary part.
  • the corresponding positions refer herein to positions in which the primary and secondary parts are aligned or facing each other in such a way that electrical power transfer from one part to another is possible.
  • This may entail, for example, that a magnetic circuit comprising at least part of the primary and at least part of the secondary part is being formed when the primary and secondary are arranged at the corresponding positions, thus, enabling electrical power transfer based on induction.
  • the primary and secondary parts may also be in electrical connection with respect to each other galvanically at the corresponding positions.
  • the operation of the separate electrical power transfer device 60 may be controlled by the controlling device 61 or the elevator controlling unit 1000 in connection with the separate electrical power transfer device 60.
  • the door coupler 18 may be configured to generate the coupling signal 65 when the coupling between the doors 11, 12 occurs.
  • the coupling signal 65 may then be utilized to establish the electrical connection 40 between the elevator shaft 13 and the elevator car 10.
  • the established electrical connection 40 may then be utilized in transferring electrical power, such through a galvanic connection or by inductive coupling, for example, through the door coupler 18 or through the separate electrical power transfer device 60.
  • the electrical power transfer arrangement 200 may be configured such that a signal is provided to a contactor for establishing the electrical connection 40 or to an electrical converter or any electrical power supply being connected to the electrical connection 40, for instance, for supplying the electrical power to the elevator car 10.
  • FIG. 7 illustrates a flow diagram of the method according to an embodiment of the present invention.
  • step 70 referring to a start-up phase, the necessary tasks such as obtaining components and systems, and calibration and other configuration may take place. Specific care must be taken that the individual elements work together, for example, that the door coupler 18 is arranged properly so that coupling may be performed at a certain point during the operation of the elevator 100. Communication, such as for the coupling signal, and electrical connections, such as said electrical connection 40, between various components and (sub-)systems may be established.
  • step 71 coupling an elevator car door 11 of the elevator car 10 with a landing door 12 of the elevator shaft 13 with a door coupler 18 may be performed.
  • the door coupler 18 may couple said doors 11, 12 with each other mechanically or by a magnetic force, for instance.
  • the coupling may occur preferably automatically as the elevator car 10 arrives at the landing floor.
  • establishing an electrical connection 40 for transferring electrical power between the elevator car 10 and the elevator shaft 13 by utilizing the door coupler 18 may be performed.
  • the utilizing may entail that the door coupler 18 itself forms a current path between the elevator car door 11 and the landing door 12.
  • the utilizing may entail that the door coupler 18 generates a coupling signal 65 which may be, for example, utilized for establishing a current path through a separate electrical power transfer device 60.
  • the separate electrical power transfer device 60 may, for example, be arranged between the elevator car 10 and the elevator shaft 13 at a landing floor to some other location with respect said doors 11, 12 or the door coupler 18.
  • the separate electrical power transfer device 60 may be a contactor which may establish a galvanic connection in response to the coupling signal or it may utilize inductive coupling, such as in case a coupled inductor having an airgap, for establish the electrical connection 40.
  • transferring electrical power between the elevator car 10 and the elevator shaft 13 through the electrical connection 40 may be performed. This may entail transferring power through the door coupler 18 or the separate electrical power transfer device 60.
  • the elevator car 10 may comprise an electrical energy storage 14, such as a battery.
  • the establishing of the electrical connection 40 may preferably comprise establishing the electrical connection 40 for charging the electrical energy storage by electrical power from the elevator shaft 13 or initially from the main electrical power supply 23.
  • the method execution is ended or stopped.
  • the method flow may be executed once, intermittently, or preferably continuously at least at a landing floor.
  • the elevator 100 may comprise one or preferably several landing floors of which one or many or all may comprise a door coupler 18 which configured to couple said doors 11, 12 to each other and to be utilized in establishing the electrical connection 40.

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Elevator Control (AREA)
EP18169527.1A 2018-04-26 2018-04-26 Verfahren zur elektrischen leistungsübertragung in einem aufzug und aufzug Withdrawn EP3560872A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18169527.1A EP3560872A1 (de) 2018-04-26 2018-04-26 Verfahren zur elektrischen leistungsübertragung in einem aufzug und aufzug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18169527.1A EP3560872A1 (de) 2018-04-26 2018-04-26 Verfahren zur elektrischen leistungsübertragung in einem aufzug und aufzug

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EP3560872A1 true EP3560872A1 (de) 2019-10-30

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200189882A1 (en) * 2018-12-14 2020-06-18 Otis Elevator Company Electrical power transmission to elevator system cars

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05294568A (ja) * 1992-04-22 1993-11-09 Hitachi Ltd エレベータ乗かごの電力供給装置
US5950766A (en) 1995-09-13 1999-09-14 Kone Oy Procedure for closing an elevator landing door, and a door coupler
EP1396454A1 (de) * 2001-05-30 2004-03-10 Hitachi, Ltd. Bewegliches körpersystem
WO2006114820A1 (ja) * 2005-04-01 2006-11-02 Mitsubishi Denki Kabushiki Kaisha エレベータ用給電システム

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05294568A (ja) * 1992-04-22 1993-11-09 Hitachi Ltd エレベータ乗かごの電力供給装置
US5950766A (en) 1995-09-13 1999-09-14 Kone Oy Procedure for closing an elevator landing door, and a door coupler
EP1396454A1 (de) * 2001-05-30 2004-03-10 Hitachi, Ltd. Bewegliches körpersystem
WO2006114820A1 (ja) * 2005-04-01 2006-11-02 Mitsubishi Denki Kabushiki Kaisha エレベータ用給電システム

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200189882A1 (en) * 2018-12-14 2020-06-18 Otis Elevator Company Electrical power transmission to elevator system cars

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