Air conditioning system and controlling method using the same

Abstract

The present invention discloses an air conditioning (AC) system, which comprises an indoor ventilation device, at least one air-supply chain and at least one cascading duct. The indoor ventilation device comprises a main blower. Each of the at least one air-supply chain comprises “n” sub air-supply regions each having at least one air inlet and at least one air outlet. Each of the at least one cascading duct is used to one-by-one cascade each of the “n” sub air-supply regions by sequentially connecting with the at least one air inlet and/or the at least one air outlet of each of the “n” sub air-supply regions, wherein “n” is an integer and “n”>1 and at least one of the at least one cascading duct is a partition wall connecting any two sub air-supply regions.

What is claimed is: 
     
         1 . An air conditioning (AC) system, comprising:
 an indoor ventilation device, comprising a main blower which is used for receiving an outdoor air;   at least one air-supply chain, each comprising “n” sub air-supply regions, each of the sub air-supply regions comprising at least one air inlet and at least one air outlet; and   at least one cascading duct, each being used to one-by-one cascade each of the “n” sub air-supply regions by sequentially connecting with the at least one air inlet and/or the at least one air outlet of the “n” sub air-supply regions of each of the at least one air-supply chain, the at least one air inlet of one of the sub air-supply regions only connecting with one cascading duct of the at least one cascading duct and the at least one air outlet of the one of the sub air-supply regions only connecting with another cascading duct of the at least one cascading duct;   wherein “n” is an integer and “n”1, air inlet of a first sub air-supply region of the “n” sub air-supply regions is connected with an air outlet of the main blower via the at least one cascading duct, an air inlet of a nth sub air-supply region of the “n” sub air-supply regions is connected with an air outlet of a (n−1)th sub air-supply region of the “n” sub air-supply regions, and an air outlet of the nth sub air-supply region of the “n” sub air-supply regions is connected with an exhausted air duct and return to the indoor ventilation device.   
     
     
         2 . The AC system according to  claim 1 , wherein at least one of the at least one cascading duct is a partition wall connecting any two sub air-supply regions. 
     
     
         3 . The AC system according to  claim 1 , wherein when “n” is larger than 2, except for the first sub air-supply region and the nth sub air-supply region of the “n” sub air-supply regions, the at least one air inlet of mth sub air-supply regions of the “n” sub air-supply regions is connected with the at least one air outlet of “(m−1)”th sub air-supply regions of the “n” sub air-supply regions and the at least one air outlet of the mth sub air-supply regions of the “n” sub air-supply regions is connected with the at least one air inlet of (m+1)th sub air-supply regions of the “n” sub air-supply regions, “m” is an integer and “n” is larger than “m”, “m” is larger than 1. 
     
     
         4 . The AC system according to  claim 1 , further comprises a sub AC unit disposed inside of the each of the “n” sub air-supply regions. 
     
     
         5 . The AC system according to  claim 1 , further comprises at least one sub blower disposed in at least one cascading duct. 
     
     
         6 . A controlling method for an air conditioning (AC) system, comprising:
 transporting an outdoor air through a main blower of an indoor ventilation device to at least one air-supply chain;   connecting sequentially at least one air inlet and/or at least one air outlet of “n” sub air-supply regions of the at least one air-supply chain through at least one cascading duct, and each of the “n” sub air-supply regions are cascaded one-by-one, wherein n is an integer and “n”>1;   transporting the air sequentially to each of the “n” sub air-supply regions through the at least one cascading duct; and   transporting air back to the indoor ventilation device by connecting an exhausted duct with air outlet of the nth sub air-supply region;   wherein the at least one air inlet of one of the sub air-supply regions is only connected with one cascading duct of the at least one cascading duct and the at least one air outlet of the one of the sub air-supply regions is only connected with another cascading duct of the at least one cascading duct.   
     
     
         7 . The controlling method according to  claim 6 , comprising:
 disposing a sub AC unit inside each of the “n” sub air-supply regions to homogenize the air in the sub air-supply region.   
     
     
         8 . The controlling method according to  claim 6 , wherein the indoor ventilation device is disposed outside the at least one air-supply chain. 
     
     
         9 . The controlling method according to  claim 6 , wherein at least one of the at least one cascading duct is a partition wall connecting any two sub air-supply regions. 
     
     
         10 . The controlling method according to  claim 6 , further comprises at least one sub blower disposed in at least one cascading duct.