Heat exchanger of duct type air conditioner and duct type air conditioner

The utility model discloses a duct type air conditioner heat exchanger and a duct type air conditioner, the heat exchanger comprises a plurality of heat exchange fins and a plurality of heat exchange tubes, and an air flowing space is arranged between every two adjacent heat exchange fins; the heat exchange fins are provided with air flow channels, and the air flow channels communicate with the air flowing space. In the direction from the windward side to the leeward side, the heat exchanger is provided with a plurality of rows of heat exchange pipes, and each row of heat exchange pipes are correspondingly provided with a plurality of air flow channels; the number of the air flow channels corresponding to the first row of heat exchange tubes is larger than that of the air flow channels corresponding to the last row of heat exchange tubes. Therefore, the air flow channels are formed in the heat exchange fins, the air flow channels can play a role in turbulent flow so as to prolong the heat exchange time of airflow, the heat exchange tubes and the heat exchange fins, and the heat exchange effect of the heat exchanger on the airflow is improved; the number of the air flow channels corresponding to the first row of heat exchange tubes is larger than that of the air flow channels corresponding to the last row of heat exchange tubes, so that the turbulent flow effect of the air flow channels arranged corresponding to the first row of heat exchange tubes is improved.