目前我国生产和销售的燃气热水器,大多为直接排气式,且热负荷小于41.9MJ/h,热水产率不超过5L/min,满足不了北方冬季洗澡的要求,同时因直排式热水器烟气排入室内,燃烧空气取自室内,其氧含量的减少,二氧化碳、水蒸汽的增多,空气污染,造成燃烧不完全,引起一氧化碳中毒死亡事故发生多起,故建议抓紧研制和批量生产烟 At present, most gas water heaters produced and sold in China are directly exhausted. The heat load is less than 41.9 MJ/h, and the hot water production rate does not exceed 5 L/min. This does not meet the requirements of northern winter bathing, and at the same time, the direct-fired water heater smoke When it is discharged into the room and the combustion air is taken from the room, its oxygen content is reduced, the increase of carbon dioxide and water vapor, and air pollution cause incomplete combustion, causing many deaths due to carbon monoxide poisoning. Therefore, it is recommended to develop and mass-produce cigarettes.