Ventilation device

Abstract

A ventilation device includes: a ventilation unit configured to ventilate a target space; an irradiation unit configured to sterilize air in the target space with an ultraviolet ray; and a control unit configured to control a ventilation amount of the ventilation unit and an output of the irradiation unit in coordination.

1 . A ventilation device comprising:
 a ventilation unit configured to ventilate a target space;   an irradiation unit configured to sterilize air in the target space with an ultraviolet ray; and   a control unit configured to control a ventilation amount of the ventilation unit and an output of the irradiation unit in coordination.   
     
     
         2 . The ventilation device of  claim 1 , wherein
 the control unit controls the ventilation amount of the ventilation unit and the output of the irradiation unit in coordination such that the output of the irradiation unit increases as the ventilation amount of the ventilation unit decreases.   
     
     
         3 . The ventilation device of  claim 1 , wherein
 the control unit controls the ventilation amount of the ventilation unit and the output of the irradiation unit in coordination based on an equivalent ventilation amount which is a ventilation amount for the target space corresponding to the output of the irradiation unit.   
     
     
         4 . The ventilation device of  claim 3 , wherein
 the control unit controls the ventilation amount of the ventilation unit and the output of the irradiation unit in coordination such that a total ventilation amount that is based on a sum of the equivalent ventilation amount corresponding to the output of the irradiation unit and the ventilation amount of the ventilation unit becomes equal to or greater than a required ventilation amount for the target space.   
     
     
         5 . The ventilation device of  claim 4 , wherein
 the control unit   controls the ventilation unit such that the ventilation amount of the ventilation unit becomes a target ventilation amount, and   controls the output of the irradiation unit such that the total ventilation amount that is based on a sum of the equivalent ventilation amount corresponding to the output of the irradiation unit and the target ventilation amount of the ventilation unit becomes equal to or greater than the required ventilation amount.   
     
     
         6 . The ventilation device of  claim 4 , wherein
 the control unit   controls the irradiation unit such that the output of the irradiation unit becomes a target output, and   controls the ventilation amount of the ventilation unit such that the total ventilation amount that is based on a sum of the equivalent ventilation amount corresponding to the target output of the irradiation unit and the ventilation amount of the ventilation unit becomes equal to or greater than the required ventilation amount.   
     
     
         7 . The ventilation device of  claim 4 , wherein
 the control unit determines the required ventilation amount based on the number of persons in the target space.   
     
     
         8 . The ventilation device of  claim 1 , wherein
 the control unit increases the ventilation amount of the ventilation unit as a degree of deterioration of the irradiation unit increases.   
     
     
         9 . The ventilation device of  claim 1 , further comprising:
 a first casing having an air passage through which air in the target space flows; and   a first heat exchanger disposed in the air passage, wherein   the ventilation unit has a duct allowing communication between an outdoor space and the air passage, and   the irradiation unit is disposed in the air passage or the duct.   
     
     
         10 . The ventilation device of  claim 9 , wherein
 the ventilation unit is configured to discharge air in the air passage to the outdoor space through the duct, and   the irradiation unit is disposed, in the air passage, downstream of a connection port of the duct in an air flow.   
     
     
         11 . The ventilation device of  claim 9 , wherein
 the ventilation unit is configured to supply air in the outdoor space to the air passage through the duct, and   the irradiation unit is disposed, in the air passage, upstream of a connection port of the duct in an air flow.   
     
     
         12 . The ventilation device of  claim 9 , wherein
 the ventilation unit is configured to supply air in the outdoor space to the air passage through the duct, and   the irradiation unit is disposed, in the air passage, downstream of a connection port of the duct in an air flow.   
     
     
         13 . The ventilation device of  claim 9 , wherein
 the irradiation unit is disposed, in the air passage, in parallel with a connection port of the duct.   
     
     
         14 . The ventilation device of  claim 1 , further comprising:
 a second casing having an air supply passage for supplying outdoor air to the target space and an air exhaust passage for discharging air in the target space to the outdoor space; and   a second heat exchanger configured to perform heat exchange between air in the air supply passage and air in the air exhaust passage, wherein   the irradiation unit is disposed in the air supply passage.   
     
     
         15 . The ventilation device of  claim 14 , wherein
 the second casing has a circulation passage for sending air in the target space to the target space, and   the irradiation unit is disposed in the circulation passage.   
     
     
         16 . The ventilation device of  claim 1 , further comprising:
 an air conditioning unit configured to condition air in the target space and having the irradiation unit, wherein   the ventilation unit is installed separately from the air conditioning unit.