초록 ▼

An air heater is intended to be used in combination with an air cleaner comprising an air cleaner case, an air cleaner element dividing a space defined by the air cleaner case into a dust chamber on an upstream side with respect to the flowing direction of intake air and a clean chamber on a downstr

An air heater is intended to be used in combination with an air cleaner comprising an air cleaner case, an air cleaner element dividing a space defined by the air cleaner case into a dust chamber on an upstream side with respect to the flowing direction of intake air and a clean chamber on a downstream side with respect to the flowing direction of intake air, and an intake duct connecting an air outlet pipe connected to the clean chamber to a throttle valve. The air heater comprises a heat exchanger case covering an opening formed in the air cleaner case so as to open into the dust chamber, and forming a heating passage for heating intake air; a heat exchanger; through which cooling water is circulated, disposed in the intake air passage defined by the heat exchanger case; a passage selector plate for selectively opening either the heating passage passing the heat exchanger or a bypass passage bypassing the heat exchanger and directly connected to the dust chamber; and a thermosensitive driving means provided with a temperature sensor for sensing intake air temperature and capable of controlling the passage selector plate. The thermosensitive driving means controls the passage selector plate automatically according to the temperature of intake air to heat intake air only when necessary.

대표청구항 ▼

[ What is claimed is:] [1.] An air heater for an air cleaner comprising an air cleaner case, an air cleaner element dividing the interior of the air cleaner case into a dust chamber on an upstream side with respect to the flowing direction of intake air and a clean chamber on a downstream side with

[ What is claimed is:] [1.] An air heater for an air cleaner comprising an air cleaner case, an air cleaner element dividing the interior of the air cleaner case into a dust chamber on an upstream side with respect to the flowing direction of intake air and a clean chamber on a downstream side with respect to the flowing direction of intake air, the clean chamber having an outlet pipe, and an intake duct connected to the air outlet pipe, said intake duct having a throttle valve, said air heater comprising:a heat exchanger case covering an opening formed in the air cleaner case so as to open into the dust chamber, and forming a heating passage for heating intake air;a heat exchanger, through which cooling water for cooling an internal combustion engine is circulated, disposed in the heating passage defined by the heat exchanger case opposite to part of the opening opening into the dust chamber;a passage selector plate for selectively opening either the heating passage passing the heat exchanger or a bypass passage bypassing the heat exchanger; anda thermosensitive driving means provided with a temperature sensor for sensing temperature of intake air and capable of controlling the passage selector plate.