JPS5694131A - Air warmer - Google Patents

Abstract

PURPOSE: To improve the heat efficiency, to facilitate the installation work of the system and to save energy by phase-changing a fron system refrigerant from a liquid phase to a gaseous phase by heating, transmitting the heat quantity into a room, and then phase-changing again the refrigerant from the gaseous phase into the liquid phase, thereby obtaining air warming effect.

CONSTITUTION: The refrigerant of the gaseous phase flown into a room heat exchanger 1 is condensed into a liquid by the effect of a room fan 2 to discharge the heat contained therein into the room. The liquidized refrigerant is then compressed by a circulating pump 3 by an amount of pressure loss within a closed loop and flown into an evaporater 4 as it is in the liquid phase. On the other hand, a combustion chamber 6 is supplied with a secondary air by the guide of an air controller 7 and a combustor 5 performs a combustion at a low air excess rate, that is, with a high combustion efficiency. The high temperature combustion gas produced within the combustion chamber is mixed with a large amount of air introduced by a fan 9 in a mixing chamber 8 and then sent to the evaporater 4 to heat the refrigerant within the pipe of the evaporater 4 into an evaporated gas.

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