COMBUSTION CONTROL DEVICE

• US 20140178826A1
• Filed: 10/10/2013
• Published: 06/26/2014
• Est. Priority Date: 10/12/2012
• Status: Active Grant

• Current Assignee: Shizuoka Seiki Co. Ltd.
• Original Assignee: Shizuoka Seiki Co. Ltd.
• Inventors: Yoshioka, Shogo
• Granted Patent: US 9,574,773 B2
• Time in Patent Office: Days
• US Class Current: 431/13
• CPC Class Codes: F23N 3/082 using electronic means
• CPC Class Codes: F23N 5/242 using electronic means

Abstract

A combustion control device includes a combustion fan motor, a control unit, a silicon diode group, a silicon diode, and a combustion-fan-disconnection detecting unit. The control unit is configured to control a combustion state of the combustion fan motor. The silicon diode group includes at least two silicon diodes coupled in series to the combustion fan motor. The silicon diode is coupled in parallel to the silicon diode group with a reversed polarity. The combustion-fan-disconnection detecting unit includes a photocoupler and a resistor. The photocoupler and the resistor are coupled in parallel to the silicon diode group and the silicon diode with the same polarity as a polarity of the silicon diode group side.

Claims

1. A combustion control device, comprising:

a combustion fan motor;

a control unit configured to control a combustion state of the combustion fan motor;

a silicon diode group that includes at least two silicon diodes coupled in series to the combustion fan motor;

a silicon diode coupled in parallel to the silicon diode group with a reversed polarity;

and a combustion-fan-disconnection detecting unit that includes a photocoupler and a resistor, the photocoupler and the resistor being coupled in parallel to the silicon diode group and the silicon diode with a same polarity as a polarity of the silicon diode group side.

2. The combustion control device according to claim 1, wherein the silicon diode group includes two or more rows of two or more series-coupled silicon diodes.

3. The combustion control device according to claim 1, wherein

the silicon diode group includes at least one series-coupled resistor.