| 摘要 |
PURPOSE: To prevent icing of various kinds of vehicles by providing a warm air cover, by which the temperature of air can be raised within a limited range of an exhaust pipe so as to be applied to various kinds of vehicles. CONSTITUTION: A spirally partitioned air passage 17 is formed by a recess groove 16 of an outer pipe 15 which covers the outer peripheral surface of an exhaust pipe 4 at a designated space from the outer peripheral surface. Air is let flow in the spirally air passage 17 to increase the heat receiving quantity of air and heighten the heat exchange efficiency. Thus, a warm air cover can be reduced in size, so that the temperature of air can be raised by utilizing heat within a limited range of the exhaust pipe, the installation space of the warm air cover can be decreased so as to be applied to various kinds of vehicles, and icing can be prevented. |
