Boiler apparatus utilizing exhaust gas heat
First Claim
1. A boiler apparatus for removing a deposit of frost, snow, ice, or the like by melting same by discharging hot water, comprising a tank for storing water, a nozzle for spraying water, a two-way switchable valve provided in passage connecting between said tank and the nozzle, a pump provided in passage connecting between the tank and a supply port of said valve, at least one pair of heater tube and by-pass tube which are respectively connected at one end to said nozzle, said heater tube being adapted to be heated by respective output ports of the valve and at the other end to hot exhaust gas so that heated water is discharged from said nozzle when flow passages within the valve are in communication with said heater tube.
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Accused Products
Abstract
The invention relates to a boiler apparatus and, more particularly, to a boiler apparatus for removing a deposit of frost, snow, ice, or the like on the surface of the windshield or rear window of an automobile or the like vehicle by spraying hot water to melt such deposit. The apparatus has at least one pair of heater tube and by-pass tube. The water in the tank is heated by hot exhaust gas in the heater tube and discharged as hot water from a discharge nozzle. When the water in the tank is discharged after passing through a by-pass tube, the water is not heated and discharged at its as-is temperature. The heater tube is usually disposed in a hollow tube body, and the hollow tube body, with the heater tube, is mounted to an exhaust pipe so that the exhaust gas is discharged after passing through the hollow tube body. Alternatively, it may be mounted in position integrally with the engine or muffler. For safety purposes, the heater tube may be provided with an automatic pressure discharge valve or a safety valve.
13 Citations
14 Claims
- 1. A boiler apparatus for removing a deposit of frost, snow, ice, or the like by melting same by discharging hot water, comprising a tank for storing water, a nozzle for spraying water, a two-way switchable valve provided in passage connecting between said tank and the nozzle, a pump provided in passage connecting between the tank and a supply port of said valve, at least one pair of heater tube and by-pass tube which are respectively connected at one end to said nozzle, said heater tube being adapted to be heated by respective output ports of the valve and at the other end to hot exhaust gas so that heated water is discharged from said nozzle when flow passages within the valve are in communication with said heater tube.
Specification