Abstract: The present invention provides a condenser which is free from pressure loss of air stream due to an air exhaust pipe and loss of thermal energy, and which is compact. In the condenser according to the present invention, deflector plates 27b are disposed in a vertically central part of a first cooling pipe bundle having a number of cooling pipes extended in parallelism with each other and in a first horizontal direction of the condenser. The deflector plates 27b are diverged downward to both sides and provide a roof of air cooling chambers 24a, 24b. Second cooling pipe bundles 25a, 25b are disposed respectively in the air cooling chambers 24a, 24b. An air exhaust inner pipe 29 is extended upward in the first cooling pipe bundle 20 in communication with upper spaces 34a, 34b in the air cooling chambers 24a, 24b.