| 摘要 |
A propane heater suitable for orchards, having a cylindrical combustion chamber and an exhaust tube which extends from one end thereof, the exhaust tube being substantially longer than the combustion chamber. A fuel inlet is located in the cylindrical surface of the combustion chamber at the other end thereof, at approximately 30 DEG from top dead center thereof. An ignition and air supply tube is located approximately 80 DEG -110 DEG circumferentially away from the fuel inlet, past the top dead center of the chamber.
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