FR470638A - Perfectionnements apportés aux appareils à racler les économiseurs de combustible employés pour chauffer l'eau d'alimentation des chaudières à vapeur
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Perfectionnements apportés aux appareils à racler les économiseurs de combustible employés pour chauffer l'eau d'alimentation des chaudières à vapeur
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F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
F28G1/00—Non-rotary, e.g. reciprocated, appliances
F28G1/08—Non-rotary, e.g. reciprocated, appliances having scrapers, hammers, or cutters, e.g. rigidly mounted
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FR470638D1913-04-021914-03-26Perfectionnements apportés aux appareils à racler les économiseurs de combustible employés pour chauffer l'eau d'alimentation des chaudières à vapeur
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Perfectionnements apportés aux appareils à racler les économiseurs de combustible employés pour chauffer l'eau d'alimentation des chaudières à vapeur
Perfectionnements aux appareils ajoutant à l'eau d'alimentation des chaudières des substances qui empechent la formation de dépots minéraux compacts