OTHER DOMESTIC STOVES OR RANGES; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION (radiator stoves of the fluid-circulating type Fulltext... Hierarchy... Expanded...F24H)
In this subclass, the following terms or expressions are used with the meanings indicated:
"air-conditioning" means the supply of air to rooms or spaces by means which provide for the treatment of the air in at least two of the following ways: heating — cooling — any other kind of treatment, e.g. humidification;
"ventilation" means the supply of air to, or its extraction from, rooms or spaces, and systems for circulating air within rooms or spaces, but does not cover the mere heating of rooms or spaces by the supply of heated air. The supply or circulation systems may include means for cooling the air or for treating the air in any other way than cooling or heating.
The distinguishing feature of the air heaters covered by this subclass is that the heat is predominantly released to the air by convection, mostly by forced circulation of the air. The domestic stoves or ranges covered by subclass Fulltext... Hierarchy... Expanded...F24B, Fulltext... Hierarchy... Expanded...F24C may also be fired or electric air heaters but they release their heat to a considerable extent by radiation and only to some extent by natural convention. [3]
In this subclass, the following terms or expressions are used with the meanings indicated:
"water" includes other liquids. It always means the liquid to be heated; [3]
"air" includes other gases or gas mixtures. It always means the gas to be heated; [3]
"furnace tubes" means tubes inside the heater wherein combustion is performed; [3]
"fire tubes" means tubes inside the heater through which flue-gases flow from a combustion chamber located outside the tubes; [3]
"heater" means to apparatus including both heat generating means and means for transferring the generated heat to water or air. [3]
PRODUCTION OR USE OF HEAT NOT OTHERWISE PROVIDED FOR (engines or other mechanisms for producing mechanical power from heat, see the relevant classes, e.g. Fulltext... Hierarchy... Expanded...F03G for using natural heat)