WATER HEATING APPARATUS AND CONTROL METHOD OF THE SAME

• Main Authors: HEO CHANG HEOI, KIM SOON KI
• Format: Patent
• Language: English; Korean
• Published: 22.06.2021
• Subjects: BLASTING; COMBUSTION APPARATUS; COMBUSTION PROCESSES; FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEATGENERATING MEANS, IN GENERAL; HEATING; LIGHTING; MECHANICAL ENGINEERING; RANGES; REGULATING OR CONTROLLING COMBUSTION; VENTILATING; WEAPONS

A water heater according to the present invention includes: a burner including a plurality of burner units that generate a flame through a combustion reaction of fuel gas and air to heat and discharge water, and selectively operate according to a plurality of operation states; a gas supply unit providing the air and the fuel gas to the burner; a flame-induced current obtaining unit disposed adjacent to the flame to obtain a flame-induced current from the flame; and a processor electrically connected to the gas supply unit and the flame-induced current obtaining unit. The processor is configured to: check whether the operation state of the burner is changed, control the flame-induced current obtaining unit to acquire the flame-induced current when the operation state of the burner is changed, and determine whether a transition is abnormal based on the acquired flame-induced current and the changed operation state of the burner. According to the water heater and the control method thereof, an abnormal transition in a multi-stage burner can be checked through acquisition of a flame-induced current. 본 발명에 따른 물 가열기는, 물을 가열하여 배출하기 위해 연료가스와 공기로부터 연소반응을 통해 화염을 발생시키고, 복수의 운전상태에 따라 각각 선택적으로 작동하는 복수의 버너 유닛을 포함하는 버너; 상기 버너에 상기 공기 및 상기 연료가스를 제공하는 가스제공부; 상기 화염과 인접하게 배치되어, 상기 화염으로부터 염전류를 획득하는 염전류 획득부; 및 상기 가스제공부 및 상기 염전류 획득부와 전기적으로 연결되는 프로세서를 포함하고, 상기 프로세서는: 상기 버너의 운전상태가 변경되었는지를 확인하고, 상기 버너의 운전상태가 변경된 경우 상기 염전류 획득부가 염전류를 획득하도록 제어해, 획득된 염전류와 상기 버너의 변경된 운전상태에 기초해서 전이이상 여부를 판단한다.