EMERGENCY FLUSH APPARATUS AND METHOD

• US 20140237712A1
• Filed: 02/20/2014
• Published: 08/28/2014
• Est. Priority Date: 02/21/2013
• Status: Active Grant

• Current Assignee: Shanghai Kohler Electronics Ltd.
• Original Assignee: Shanghai Kohler Electronics Ltd.
• Inventors: Dan, Cao, Minghui, Zhu, Jie, Zhang, Yingfeng, Wang
• Granted Patent: US 9,464,423 B2
• Time in Patent Office: Days
• US Class Current: 4/313
• CPC Class Codes: E03D 1/00 Water flushing devices with cisterns ; Setting up a range of flushing devices or water-closets; Combinations of several flushing devices
• CPC Class Codes: E03D 5/105 touchless, e.g. using sensors

Abstract

An emergency flush apparatus for a toilet includes a flush driver module, a battery, and a processing unit operatively connected to the battery and the flush driver module. The emergency flush apparatus further includes a flush switch operatively connected to the battery and the processing unit, and a primary power supply operatively connected to the flush driver module. When the flush switch is activated, the processing unit detects a state of the flush driver module. Power is then supplied to the flush driver module from one of either the primary power supply or the battery in response to the detected state.

Claims

1. An emergency flush apparatus for a toilet comprising:

a flush driver module;

a battery;

a processing unit operatively connected to the battery and the flush driver module;

a flush switch operatively connected to the battery and the processing unit; and

a primary power supply operatively connected to the flush driver module;

wherein when the flush switch is activated the processing unit detects a state of the flush driver module; and

wherein power is supplied to the flush driver module from one of either the switch power supply or the battery in response to the detected state.

2. The emergency flush apparatus of claim 1, wherein when the primary power supply is unable to supply power to the flush driver module, the flush driver module is determined by the processing unit to be in a power shutdown state.

3. The emergency flush apparatus of claim 2, wherein when the flush driver module is in the power shutdown state, the processing unit causes the battery to supply power to the flush driver module.

4. The emergency flush apparatus of claim 3, further comprising a battery voltage detection module having a signal input terminal and a signal output terminal, wherein the signal input terminal is connected to the battery and the signal output terminal is connected to the processing unit;

and

wherein when the flush driver module is in the power shutdown state, the battery voltage detection module detects a voltage of the battery.

5. The emergency flush apparatus of claim 4, further comprising a battery self-locking module operatively connected to the processing unit and the battery;

and

wherein when the flush driver module is in the power shutdown state, the battery self-locking module maintains a supply of power from the battery to the flush driver module if the detected battery voltage is judged sufficient to power the flush driver module.

6. The emergency flush apparatus of claim 5, wherein the battery voltage detection module includes a voltage divider.

7. The emergency flush apparatus of claim 6, wherein the battery self-locking module includes a rectifier circuit and a switch circuit.

8. The emergency flush apparatus of claim 7, wherein the processing unit is a battery powered microcontrol unit does not rely on the primary power supply for operation.

9. An emergency flush apparatus for a toilet comprising:

a flush driver module;

a battery;

a processing unit operatively connected to the battery and the flush driver module;

a flush switch operatively connected to the battery and the processing unit;

a switch power supply operatively connected to the flush driver module;

a battery voltage detection module having a signal input terminal and a signal output terminal, wherein the signal input terminal is connected to the battery and the signal output terminal is connected to the processing unit; and

a battery self-locking module operatively connected to the processing unit and the battery;

wherein in a first operational state the flush driver module is powered by the switch power supply, and in a second operational state the flush driver module is powered by the battery.

10. The emergency flush apparatus of claim 9, wherein in the second operational state the switch power supply is unable to supply power to the flush driver module.

11. The emergency flush apparatus of claim 10, wherein in the second operational state the battery voltage detection module detects a voltage of the battery and the battery self-locking module maintains a supply of power from the battery to the flush driver module if the detected battery voltage is sufficient to power the flush driver module.

12. The emergency flush apparatus of claim 11, wherein the voltage detection module includes a voltage divider.

13. The emergency flush apparatus of claim 12, wherein the battery self-locking module includes a rectifier circuit and a switch circuit.

14. The emergency flush apparatus of claim 13, wherein the processing unit is a battery powered microcontrol unit that does not rely upon the primary power supply for operation.

15. An emergency flush method comprising:

providing an emergency flush apparatus comprising;

a flush driver module;

a battery;

a processing unit operatively connected to the battery and the flush driver module;

a flush switch operatively connected to the battery and the processing unit; and

a switch power supply operatively connected to the flush driver module;

detecting a state of the flush driver module; and

selecting one of either the primary power supply or the battery to supply power to the flush driver module in response to the detected state.

16. The method of claim 15, wherein detecting a state of the flush driver module includes determining whether the switch power supply can power the flush driver module.

17. The method of claim 16, further comprising:

providing a battery voltage detection module having a signal input terminal and a signal output terminal, wherein the signal input terminal is connected to the battery and the signal output terminal is connected to the processing unit;

detecting a voltage of the battery with the battery voltage detection module; and

determining whether the detected battery voltage is sufficient to power the flush driver module.

18. The method of claim 17, further comprising:

providing a battery self-locking module operatively connected to the processing unit and to the battery; and

maintaining a supply of power from the battery to the flush driver module if the detected battery voltage is sufficient to power the flush driver module.

19. The method of claim 18, wherein detecting a voltage of the battery includes dividing the battery voltage and sending an obtained voltage to the processing unit.

20. The method of claim 19, wherein determining whether the voltage is sufficient to power the flush driver module includes comparing the value of the obtained voltage to a threshold value programmed in the processing unit.