目前，煙道式燃?xì)鉄崴魍ǔ０惭b在室內(nèi)，其燃燒產(chǎn)生的煙氣通過(guò)其排煙罩的排煙管接口連接的排煙管排出到室外?，F(xiàn)有的煙道式燃?xì)鉄崴鞯呐艧熣种饕膳艧熣謿んw10和固定設(shè)于排煙罩殼體10內(nèi)的U形擋風(fēng)板20構(gòu)成。U形擋風(fēng)板20設(shè)于排煙罩殼體10的中心，其開(kāi)口正對(duì)排煙罩殼體10頂部的排煙管接口 11，煙道式燃?xì)鉄崴魅紵a(chǎn)生的煙氣從排煙罩殼體10底部的煙氣入口 12進(jìn)入，排煙罩殼體10的兩側(cè)還設(shè)有由排煙罩殼體10內(nèi)側(cè)向其外側(cè)傾斜向下的空氣通道13。
At present, the flue gas water heater is usually installed in the indoor area, and the smoke generated by the combustion is discharged to the outdoors through the exhaust pipe connected with the exhaust pipe interface of the exhaust hood. The existing smoke exhaust hood of the flue gas water heater is mainly composed of a smoke exhausting cover shell 10 and a U shaped windshield plate fixed in the 10 of the hood housing shell. U shaped windshield plate 20 is arranged at the hood shell 10 center, the opening is at the top of the hood shell 10 exhaust pipe interface 11, combustion flue gas flue type gas water heater from the smoke hood casing 10 at the bottom of the flue gas entrance 12 into the housing 10, both sides of the hood is provided with a smoke hood casing 10 medial to the the lateral tilt air passage down 13.
由于現(xiàn)有排煙罩的結(jié)構(gòu)尺寸沒(méi)有針對(duì)防風(fēng)(倒灌風(fēng))設(shè)計(jì)，導(dǎo)致在外界風(fēng)壓較大時(shí)，外界的風(fēng)易從排煙管倒灌進(jìn)入到排煙罩中，倒灌的風(fēng)一部分從排煙罩兩側(cè)的空氣通道13排出，剩下部分的倒灌風(fēng)直接從煙氣入口 12倒吹向煙道式燃?xì)鉄崴鞯娜紵?，?dǎo)致正常燃燒的火排出現(xiàn)火焰外溢或熄火現(xiàn)象；同時(shí)，會(huì)使得煙道式熱水器的排煙困難，產(chǎn)生的CO (—氧化碳)量增加并從空氣通道排出到室內(nèi)，造成使用者中毒。因此，現(xiàn)有的煙道式燃?xì)鉄崴髟谕饨顼L(fēng)壓較大時(shí)無(wú)法正常使用，并且不。
Due to the structure size of existing hood for wind (downdraft) design, resulting in the wind pressure is large, the outside wind easily from the exhaust pipe to the intrusion into the smoke hood, a part of the wind from the intrusion of exhaust hood air channel 13 on both sides of the discharge, the remaining part of the downdraught flue gas blowing down directly from the entrance 12 to the flue gas water heater burner, leading to the normal fire exhaust flame spillover or extinction phenomenon; at the same time, the smoke difficult flue gas water heater, the CO (carbon monoxide) increased and discharged from the air passage to the interior, caused by poisoning. Therefore, the existing flue gas water heater can not be used normally when the outside wind pressure is large, and it is not safe
煙道式燃?xì)鉄崴鞯呐艧熣?，排煙管接口的直徑?20±0.3mm，空氣通道的頂蓋板與水平面的夾角為36±1°，空氣通道的底側(cè)導(dǎo)流板與水平面的夾角為30±1°，煙氣入口的寬度為124±0.5mm，U形擋風(fēng)板的開(kāi)口與煙氣入口的高度差為77±1mm，U形擋風(fēng)板的弧形段的直徑為65.3±1.5mm，U形擋風(fēng)板的平直段的高度為10±0.5mm。本發(fā)明還公開(kāi)了一種包括上述排煙罩的煙道式燃?xì)鉄崴鳌?br />
Exhaust flue type gas water heater cover, exhaust pipe interface diameter was 120 + 0.3mm, the angle between the top cover and the horizontal air channel is 36 + 1 degree angle, bottom side guide plate and the horizontal air channel is 30 + 1 DEG, flue gas entrance width is 124 + 0.5mm, U shape deflector the opening and the flue gas entrance height difference is 77 + 1mm, the arc section of U shape of the windscreen diameter was 65.3 + 1.5mm, straight section of U shape of the windscreen height was 10 + 0.5mm. The invention also discloses a flue gas water heater including the smoke exhaust hood.
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