초록 ▼

An auxiliary heating apparatus is used in conjunction with a primary heater system which includes a heat exchange for heating air by indirect heat exchange with a fluid stream containing engine heat. The auxiliary heater apparatus comprises a fluid pump, a throttle valve for reducing the pressure of

An auxiliary heating apparatus is used in conjunction with a primary heater system which includes a heat exchange for heating air by indirect heat exchange with a fluid stream containing engine heat. The auxiliary heater apparatus comprises a fluid pump, a throttle valve for reducing the pressure of and thereby heating the auxiliary heating fluid, and an air heat exchanger arranged in series with the primary heat exchanger on the air side.

대표청구항 ▼

An arrangement for heating the operator\s cabin of a motor vehicle, comprising a liquid circulation system of the vehicle including a liquid medium for cooling or lubricating the engine, means for circulating the liquid medium through the circulation system, a main heating circuit in said circulatio

An arrangement for heating the operator\s cabin of a motor vehicle, comprising a liquid circulation system of the vehicle including a liquid medium for cooling or lubricating the engine, means for circulating the liquid medium through the circulation system, a main heating circuit in said circulation system including a main heat exchanger for heating air by indirect heat exchange with the liquid medium that is heated by engine heat generated by the engine, valve means in said circulation system for controlling the rate of liquid medium flow to the engine for cooling or lubricating or to said main heat exchanger for heating the air, whereby to assure an adequate quantity of liquid flow required for said circulation system and to make available a sufficient quantity of liquid flow through said main heating circuit for heating purposes, an auxiliary heating circuit containing an auxiliary stream of liquid medium and having a hydraulic pump for delivering the auxiliary stream through the auxiliary circuit via a pressure-reducing element to an auxiliary heat exchanger, the pressure of the auxiliary stream through said element being converted into heat for increasing the temperature of same, said heat exchangers being connected in series relative to the flow of air therethrough with said auxiliary heat exchanger being arranged on the downstream side of said main heat exchanger.