PURPOSE: To promote the circulation of refrigerant and upgrade the effect of heating with a heat transfer capacity and high temperature air of a radiator, by installing a part of connection pipe which connects a gas section of an air/liquid separator with a radiator in such a manner that it may be placed into contact with a refrigerant heater.
CONSTITUTION: On the way of piping 9 which connects a radiator 6 with an air/liquid separator 3, a refrigerant, which is heated and vaporized by a burner of a refrigerant heater 1 installed below the air/liquid separator 3 by a contact section 10 to be heated again from a refrigerant heater 1, flows into the air/liquid separator 3 under sufficient two phase state from the lower end of the refrigerant heater 1. The heat transfer effect produced by the heat exchange between the refrigerant heater 1 and the contact section 10 minimizes piping resistance, which makes it possible to reduce the size of an inlet pipe 8 and a rising pipe 7. The refrigerant present in the piping 9 is turned into perfect gas phase, responding to the pressure of the refrigerant in the piping 9. The heat transmission in the radiator 6 is further increased in order to send the gas to the radiator 6 as a superheated gas. The quantity of refrigerant to be circulated is accordingly reduced. It is, therefore, possible to reduce the size of piping 9 and the cost as well, and obtain high temperature hot air from the radiator 6.
YAMAMOTO KATSUHIKO
JAKUDO JUNICHI
OTAKE TATSUNORI
YAMAGUCHI KOICHIRO
