| 摘要 |
The present invention includes: a first damper (25a) that opens and closes a first opening (14a); a second damper (25b) that opens and closes a second opening (14b); and a control means for, on the basis of a value relating to the outside temperature and a reference value relating to said value, controlling the first damper (25a) so as to close or partially open the first opening (14a) and controlling the second damper (25b) so as to at least partially open the second opening (14b). |
