BACKUP CIRCUIT FOR ELECTRICITY SUPPLY, ELEVATOR SYSTEM, AND METHOD

• US 20130240301A1
• Filed: 05/03/2013
• Published: 09/19/2013
• Est. Priority Date: 11/18/2010
• Status: Active Grant

• Current Assignee: Kone Corporation
• Original Assignee: Kone Corporation
• Inventors: SAARELAINEN, Antti, KATTAINEN, Ari, KETONEN, Ari
• Granted Patent: US 9,434,576 B2
• Time in Patent Office: Days
• US Class Current: 187/290
• CPC Class Codes: B66B 1/34 Details , e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
• CPC Class Codes: B66B 5/06 electrical

Abstract

The invention relates to a backup circuit for electricity supply for ensuring the electricity supply of an electronic overspeed governor in connection with a malfunction of the electricity supply. The backup circuit for electricity supply comprises an energy storage. The backup circuit for electricity supply is configured to disconnect the electricity supply from the energy storage ensuring the electricity supply of the electronic overspeed governor to the overspeed governor when the malfunction of the electricity supply continues.

Claims

1. Backup circuit for electricity supply for ensuring the electricity supply of an electronic overspeed governor [[(3)]] in connection with a malfunction of the electricity supply;

which backup circuit for electricity supply comprises an energy storage;

wherein the backup circuit for electricity supply is configured to disconnect the electricity supply from the energy storage ensuring the electricity supply of the electronic overspeed governor to the overspeed governor while the malfunction of the electricity supply continues.

2. Backup circuit for electricity supply according to claim 1, wherein the backup circuit for electricity supply is configured to disconnect the electricity supply from the energy storage ensuring the electricity supply of the electronic overspeed governor to the overspeed governor with a delay when a malfunction of the electricity supply is detected.

3. Backup circuit for electricity supply according to claim 2, wherein the disconnection delay for the electricity supply of the overspeed governor is determined on the basis of the stopping delay of the apparatus monitored by the overspeed governor.

4. Backup circuit for electricity supply according to any of the preceding claims, wherein the backup circuit for electricity supply is configured to re-start the electricity supply occurring from the energy storage to the overspeed governor when the malfunction of the electricity supply continues.

5. Backup circuit for electricity supply according to claim 4, wherein the backup circuit for electricity supply is configured to start the electricity supply occurring from the energy storage to the overspeed governor for the purpose of emergency drive of the elevator.

6. Backup circuit for electricity supply according to claim 1, wherein the backup circuit for electricity supply is configured to receive a control signal for starting the electricity supply occurring from the energy storage to the overspeed governor.

7. Backup circuit for electricity supply according to claim 1, wherein the overspeed governor is fitted to activate the gripping function when the electricity supply to the overspeed governor is disturbed.

9. Elevator system, which comprises an electronic overspeed governor for preventing unintended movement of an elevator car and/or of a counterweight, wherein the elevator system comprises a backup circuit for electricity supply, according to claim 1, for ensuring the electricity supply of an overspeed governor in connection with a malfunction of the electricity supply of the elevator system.

8. Backup circuit for electricity supply for ensuring the electricity supply of an electronic overspeed governor in connection with a malfunction of the electricity supply;

which backup circuit for electricity supply comprises an energy storage;

wherein the backup circuit for electricity supply is provided with signaling means for indicating the state of charge of the energy storage.

10. Method for ensuring the electricity supply of an electronic overspeed governor, in which method

electricity is supplied from an energy storage to the electronic overspeed governor in connection with a malfunction of the electricity supply, wherein

the electricity supply from the energy storage ensuring the electricity supply of the electronic overspeed governor to the overspeed governor is disconnected while the malfunction of the electricity supply continues.

11. Method according to claim 10, wherein:

the electricity supply occurring from the energy storage to the overspeed governor is re-started when the malfunction of the electricity supply continues.