Dehumidification system

Abstract

A dehumidification system includes: an auxiliary heat exchanger connected to the heating medium circuit in series with the cooling heat exchanger, and provided downstream of a cooling heat exchanger in an air passage; a first air heat exchanger connected to a circulation circuit, and provided upstream of the cooling heat exchanger in the air passage; and a second air heat exchanger connected to the circulation circuit in series with the first air heat exchanger, and provided downstream of the auxiliary heat exchanger in the air passage, wherein the heating medium circuit performs a first action of sending a heating medium which is cooled in a cooling section, and sequentially flowed through the cooling heat exchanger and the auxiliary heat exchanger to the cooling section.

1 . A dehumidification system comprising:
 a casing which forms an air passage through which air flows;   a heating medium circuit which includes a cooling section for cooling a predetermined heating medium, and in which the heating medium circulates;   a cooling heat exchanger which is connected to the heating medium circuit, and is provided in the air passage to cool and dehumidify the air by the heating medium flowing through the cooling heat exchanger to supply the dehumidified air to the inside of a room;   an auxiliary heat exchanger which is connected to the heating medium circuit in series with the cooling heat exchanger, and is arranged downstream of the cooling heat exchanger in the air passage;   a first air heat exchanger which is connected to a circulation circuit in which the predetermined heating medium circulates, and is arranged upstream of the cooling heat exchanger in the air passage; and   a second air heat exchanger which is connected to the circulation circuit in series with the first air heat exchanger, and is arranged downstream of the auxiliary heat exchanger in the air passage, wherein   the heating medium circuit performs a first action of sending the heating medium which is cooled in the cooling section, and sequentially flowed through the cooling heat exchanger and the auxiliary heat exchanger to the cooling section.   
     
     
         2 . The dehumidification system of  claim 1 , further comprising:
 a heating section which is arranged downstream of the second air heat exchanger in the air passage to heat the air.   
     
     
         3 . The dehumidification system of  claim 1 , wherein
 the cooling heat exchanger includes an inlet which is positioned in a downstream part of the air passage, and through which the heating medium flows into the cooling heat exchanger, an outlet which is positioned in an upstream part of the air passage, and through which the heating medium flows out of the cooling heat exchanger, and an intermediate passage formed between the inlet and the outlet.   
     
     
         4 . The dehumidification system of  claim 3 , wherein
 the auxiliary heat exchanger includes an inlet which is positioned in the downstream part of the air passage, and through which the heating medium flows into the auxiliary heat exchanger, an outlet which is positioned in the upstream part of the air passage, and through which the heating medium flows out of the auxiliary heat exchanger, and an intermediate passage formed between the inlet and the outlet.   
     
     
         5 . The dehumidification system of  claim 4 , wherein
 the first air heat exchanger includes an inlet which is positioned in the downstream part of the air passage, and through which the heating medium flows into the first air heat exchanger, an outlet which is positioned in the upstream part of the air passage, and through which the heating medium flows out of the first air heat exchanger, and an intermediate passage formed between the inlet and the outlet.   
     
     
         6 . The dehumidification system of  claim 5 , wherein
 the second air heat exchanger includes an inlet which is positioned in the downstream part of the air passage, and through which the heating medium flows into the second air heat exchanger, an outlet which is positioned in the upstream part of the air passage, and through which the heating medium flows out of the second air heat exchanger, and an intermediate passage formed between the inlet and the outlet.   
     
     
         7 . The dehumidification system of  claim 1 , wherein
 the heating medium circuit is configured to perform the first action, and a second action of sending the heating medium which is cooled in the cooling section, and sequentially flowed through the auxiliary heat exchanger and the cooling heat exchanger to the cooling section in a switchable manner.   
     
     
         8 . The dehumidification system of  claim 1 , further comprising:
 a branch passage which diverts the heating medium circulating in the circulation circuit, and introduces the diverted heating medium into the circulation circuit;   an auxiliary cooling section which cools the heating medium flowing through the branch passage; and   a diverted flow control mechanism which regulates a flow rate of the heating medium flowing through the branch passage.   
     
     
         9 . The dehumidification system of  claim 1 , further comprising:
 a flow rate control mechanism which separately regulates a flow rate of the heating medium flowing through the first air heat exchanger, and a flow rate of the heating medium flowing through the second air heat exchanger.   
     
     
         10 . The dehumidification system of  claim 1 , further comprising:
 an exhaust passage through which the air in the room is discharged outside; and   a sensible heat exchanger in which the heating medium flowing through the circulation circuit and the air flowing through the exhaust passage exchange heat.   
     
     
         11 . The dehumidification system of  claim 1 , further comprising:
 a bypass passage which transfers the air in the air passage upstream of the first air heat exchanger to the downstream of the cooling heat exchanger; and   a bypass flow control mechanism which regulates a flow rate of the air flowing through the bypass passage.