| 摘要 |
FIELD: oil producing industry. ^ SUBSTANCE: invention is designed for heating water and oil. Proposed hot-water boiler has housing, furnace chamber, manifold with smoke tube, fire tubes, connected by inlet sections with furnace chamber and by outlet sections with smoke tube manifold. Housing is furnished with device to provide circulation of oil and made in form of coil. Furnace chamber is located out-side housing, being rigidly connected with housing from side of inlet sections of fire tubes, and is furnished with burner device located in its central end face part. Moreover, furnace chamber is of tube-in-tube design, being furnished from in side with circulation tubes located lengthwise in steps for circulation of water between furnace chamber and housing filled with water. Furnace chamber is furnished with air jacket connected with air branch pipe to feed air into low and mean pressure burner through fan. ^ EFFECT: enlarged operating capabilities of hot-water boiler, increased periods between overhauls. ^ 2 cl, 3 dwg
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