초록 ▼

A reservoir has an electrical heating element therein connectable to a power line and the reservoir is connected in series with a coolant carrying hose which in turn is connected to the coolant system of an automobile engine or the like. The reservoir is provided with an inlet connection and an outl

A reservoir has an electrical heating element therein connectable to a power line and the reservoir is connected in series with a coolant carrying hose which in turn is connected to the coolant system of an automobile engine or the like. The reservoir is provided with an inlet connection and an outlet connection both situated adjacent the upper side of the reservoir. The inlet connection has a one-way valve allowing coolant in only, and includes a ball which has a specific gravity less than the specific gravity of the coolant so that the ball floats in the coolant and closes off the inlet connection when the coolant level is adjacent the upper side of the reservoir. The outlet connection has a one-way valve allowing coolant out only and includes a ball which has a specific gravity greater than the specific gravity of the coolant so that the ball normally engages the valve seat and is only displaced if and when the pressure of the coolant and/or the air in the air space above the coolant level increases. When the coolant level drops due to the expulsion of some of the coolant through the outlet, coolant flows into the reservoir through the inlet connection and the coolant reduces the temperature of the coolant within the reservoir thus allowing more coolant to be drawn into the inlet valve until the level rises whereupon the inlet valve closes and the cycle is repeated.

대표청구항 ▼

A heater for the coolant of liquid cooled automotive engines and the like comprising in combination a coolant reservoir, a heater element therein operatively connected to a source of electrical energy, an inlet connection and an outlet connection in said reservoir adjacent the upper side thereof, wh

A heater for the coolant of liquid cooled automotive engines and the like comprising in combination a coolant reservoir, a heater element therein operatively connected to a source of electrical energy, an inlet connection and an outlet connection in said reservoir adjacent the upper side thereof, whereby said reservoir may be operatively connected to the coolant system of said engine, said inlet connection including a fluid level, one-way control valve assembly adapted to allow coolant to enter said reservoir, said outlet connection including a one-way valve assembly adapted to allow coolant to leave said reservoir, said inlet valve assembly including a valve seat, a ball valve element below said seat engageable with said seat when said inlet valve assembly is in the closed position, said ball valve element having a specific gravity less than the specific gravity of the coolant whereby said ball valve element floats in said coolant and moves away from said valve seat when the level of coolant drops within said reservoir and moves into engagement with said valve seat when the level of coolant rises within said reservoir, said one-way control valve assembly in said inlet connection including a horizontally situated cylindrical sleeve engageable within a bore forming the inner end of said inlet connection, and a substantially cylindrical shroud extending downwardly substantially at right angles to said sleeve, said valve seat being situated between said sleeve and said shroud and at the upper end of said shroud whereby said shroud communicates with said sleeve, said ball valve element moving freely vertically within said shroud, and means restraining the displacement of said ball valve element from the lower open end of said shroud.