Ignition controlling device of gas appliance

Patent metadata

Field	Value
Publication number	US-2016116170-A1
Application number	US-201414521014-A
Country	US
Kind code	A1
Filing date	Oct 22, 2014
Priority date	Oct 22, 2014
Publication date	Apr 28, 2016
Grant date	—

Abstract

An ignition controlling device of a gas appliance includes a high-voltage provider, a controller, and a flame sensor. The gas appliance includes an ignition electrode and a burner, and the ignition electrode is beside burner. The high-voltage provider has an output terminal, and the output terminal is electrically connected to the ignition electrode to provide high-voltage pulses to the ignition electrode. The controller controls the high-voltage provider to provide the high-voltage pulses. The flame sensor is electrically connected to the output terminal of the high-voltage provider to detect a flame around the ignition electrode and the burner. After a flame is detected by the flame sensor, the controller controls the high-voltage provider to stop the high-voltage pulses.

First claim

What is claimed is:

1 . An ignition controlling device of a gas appliance, wherein the gas appliance includes an ignition electrode and a burner; the ignition electrode is beside burner, comprising:
a high-voltage provider having an output terminal, wherein the output terminal is electrically connected to the ignition electrode to provide high-voltage pulses to the ignition electrode; a controller for controlling the high-voltage provider to provide the high-voltage pulses; and a flame sensor electrically connected to the output terminal of the high-voltage provider to detect a flame around the ignition electrode and the burner; wherein after a flame is detected by the flame sensor, the controller controls the high-voltage provider to stop the high-voltage pulses.

2 . The ignition controlling device of claim 1 , wherein the high-voltage provider has a discharge transformer, and the discharge transformer has a secondary side; the secondary side of the discharge transformer is the output terminal of the high-voltage provider; and the secondary side of the discharge transformer is electrically connected to the ignition electrode and the flame sensor respectively.

3 . The ignition controlling device of claim 2 , wherein the high-voltage provider has a starter; the secondary side of the discharge transformer has opposite ends electrically connected to the ignition electrode and a first end of the starter; a second end of the starter is electrically connected to a ground line of the ignition controlling device; the starter is conducted while the discharge transformer provides the high-voltage pulses via the secondary side.

4 . The ignition controlling device of claim 3 , wherein the starter has a DIAC.

5 . The ignition controlling device of claim 3 , wherein the flame sensor has a capacitor; when the flame of the burner touches the ignition electrode, a flame signal generated by the flame to charge the capacity; and when a voltage of the capacity reaches a predetermined voltage, the controller controls the high-voltage provider to stop the high-voltage pulses.

6 . The ignition controlling device of claim 5 , wherein the flame sensor further includes a buffer circuit; the capacity is connected to the buffer circuit, and the buffer circuit is connected to the controller.

7 . The ignition controlling device of claim 3 , wherein the controller includes a microprocessor.

8 . The ignition controlling device of claim 1 , further comprising a voltage sensor electrically connected to the controller, wherein the gas appliance includes a gas valve on a gas pipe, which supplies gas to the burner; the gas valve controls a gas flow of the gas in the gas pipe; the voltage sensor detects the high-voltage provider, and the controller controls the gas valve to provides the gas to the burner if the high-voltage provider functions normally.

9 . The ignition controlling device of claim 8 , wherein the high-voltage provider includes an oscillation circuit and a high-voltage circuit; the oscillation circuit is electrically connected to the controller, and has a step-up transformer; the step-up transformer has a secondary side, and the secondary side is electrically connected to the high-voltage circuit and the voltage sensor respectively; the high-voltage circuit has the output terminal of the high-voltage provider; the controller controls the oscillation circuit to make the step-up transformer provide the high-voltage circuit with an AC voltage via the secondary side, and the high-voltage circuit provide the high-voltage pulses; the controller controls the gas valve to supply the gas to the burner while the voltage sensor detect the AC voltage from the secondary side of the step-up transformer.

Assignees

• Grand Mate Co Ltd

Inventors

• Huang Chung-Chin
• Huang Chin-Ying
• Huang Hsin-Ming
• Huang Hsing-Hsiung
• Yeh Yen-Jen
• Lin Kuan-Chou
• Liao Pen-Liang

Classifications

• F23N2227/02

  Starting or ignition cycles · CPC title

• F23N2227/36

  Spark ignition, e.g. by means of a high voltage · CPC title

• F23N2229/00

  Flame sensors · CPC title

• F23N2227/30

  for pilot burners · CPC title

• F23Q3/008

  Structurally associated with fluid-fuel burners · CPC title