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1. (WO2018040446) GAS WATER HEATER AND SECURITY CONTROL SYSTEM AND METHOD THEREFOR

Pub. No.:    WO/2018/040446    International Application No.:    PCT/CN2016/113788
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Sat Dec 31 00:59:59 CET 2016
IPC: F24H 9/20
F04D 27/00
Applicants: WUHU MIDEA KITCHEN AND BATH APPLIANCES MFG. CO., LTD.
芜湖美的厨卫电器制造有限公司
Inventors: XUE, Chengzhi
薛承志
LIANG, Guorong
梁国荣
DAI, Xianfeng
代先锋
LIANG, Zefeng
梁泽锋
Title: GAS WATER HEATER AND SECURITY CONTROL SYSTEM AND METHOD THEREFOR
Abstract:
A gas water heater and a security control system and method therefor. The system comprises: an exhaust blower (10), used for discharging exhaust gas generated when a gas water heater is ignited; a rotation speed detection unit (20), used for detecting the rotation speed of the exhaust blower (10); a power acquisition unit (30), used for acquiring a given output power value of the exhaust blower (10); a rotation speed difference value acquisition unit (40), used for acquiring an actual rotation speed value and a reference rotation speed value of the exhaust blower (10) according to the given output power value, and calculating a difference value therebetween; and a wind discharging control unit (50), respectively connected to the exhaust blower (10), the rotation speed detection unit (20), the rotation speed difference value acquisition unit (40) and the power acquisition unit (30), and used for correcting the rotation speed of the exhaust blower (10) according to the difference value, determining the wind pressure condition of an air outlet of the exhaust blower (10) according to the corrected rotation speed of the exhaust blower (10) and the given output power value, and thus adjusting the given output power value of the exhaust blower (10) according to the wind pressure condition of the air outlet of the exhaust blower (10). The system can ensure that a gas water heater has good ignition conditions, ensures the secure and reliable operation thereof, and improves the control precision.