Turbo compression system

Abstract

A turbo compression system comprises a first impeller having a first inlet and a first outlet; a second impeller having a second inlet and a second outlet; a second discharge flow path connected with the second outlet; a first discharge flow path communicating the second discharge flow path with the first outlet; a first valve provided at the first discharge flow path and controlling flowing of the fluid; a second intake flow path connected with the second inlet and selectively making the fluid flow into the second impeller; a second valve provided at one end of the second intake flow path; and a compression flow path connected with the first valve at one end of the compression flow path and connecting with the second intake flow path at the other end of the compression flow path.

What is claimed is: 
     
         1 . A turbo compression system, comprising:
 a first impeller having a first inlet and a first outlet, compressing fluid flowing in through the first inlet by rotation motion and then discharging out through the first outlet;   a second impeller having a second inlet and a second outlet, compressing fluid flowing in through the second inlet by rotation motion and then discharging out through the second outlet;   a second discharge flow path connected with the second outlet;   a first discharge flow path communicating the second discharge flow path with the first outlet;   a first valve provided at the first discharge flow path and controlling flowing of the fluid;   a second intake flow path connected with the second inlet and selectively making the fluid flow into the second impeller;   a second valve provided at one end of the second intake flow path; and   a compression flow path connected with the first valve at one end of the compression flow path and connecting with the second intake flow path at the other end of the compression flow path.   
     
     
         2 . The turbo compression system as claimed in  claim 1 , further comprises:
 a motor having two rotation shafts provided at one side and the other side of the motor and respectively coupled with the first impeller and the second impeller.   
     
     
         3 . The turbo compression system as claimed in  claim 1 , wherein the first valve selectively converts between a two-stage compression path in which fluid flowing into the first Inlet are compressed and discharged, passing through the first impeller and the second impeller in sequence and a single-stage compression path in which fluids flowing out of the first outlet and the second outlet are joined and discharged. 
     
     
         4 . The turbo compression system as claimed in  claim 3 , wherein the second valve is shut off in case fluid is controlled to flow along with the two-stage compression path, and the second valve opens in case fluid is controlled to flow along with the single-stage compression path. 
     
     
         5 . The turbo compression system as claimed in  claim 3 , wherein the first valve controls so as to operate as either two-stage turbo compression system or single-stage turbo compression system by selectively opening or closing. 
     
     
         6 . The turbo compression system as claimed in  claim 1 , wherein the first impeller and the second impeller have same-sized diameter. 
     
     
         7 . The turbo compression system as claimed in  claim 1 , further comprises:
 a first motor which is connected to the first impeller and rotates the first impeller; and   a second motor which is provided separately from the first motor and connected to the second impeller and rotates the second impeller.   
     
     
         8 . The turbo compression system as claimed in  claim 3 , wherein
 the first valve is provided as a three-way valve which communicates either the second discharge flow path or the compression flow path with the first discharge flow path, and   the second valve is provided further away from the second inlet than a distance from a position joining the compression flow path with the second intake flow path, and is provided as a solenoid valve which opens and closes the second intake flow path.   
     
     
         9 . The turbo compression system as claimed in  claim 3 , wherein
 the first valve is provided as a three-way valve which communicates either the second discharge flow path or the compression flow path with the first discharge flow path, and   the second valve is provided at the coupling site of compression flow path and the second intake flow path and also provided as a three-way valve which communicates the second intake flow path with the compression flow path.   
     
     
         10 . A turbo compression system, comprising:
 a first impeller having a first inlet and a first outlet, compressing fluid flowing in through the first inlet by rotation motion and then discharging out through the first outlet;   a first motor driving the first impeller rotate;   a second impeller having a second inlet and a second outlet, compressing fluid flowing in through the second inlet by rotation motion and then discharging out through the second outlet;   a second motor provided separately from the first motor and driving the second impeller rotate;   a first discharge flow path provided with connection to the first outlet;   a second discharge flow path provided with connection to the second outlet, separately from the discharge flow path;   a first valve provided at the end of the first discharge flow path;   a first compression flow path communicating the first valve with the second discharge flow path;   a second compression flow path connected with the first discharge flow path passing through the first valve;   a second valve provided at the end of the second compression flow path;   a second intake flow path communicating the second valve with the second inlet; and   a intake flow path provided separately from the second intake flow path, connected with the second valve, and selectively communicated with the second Inflow Path.   
     
     
         11 . The turbo compression system as claimed in  claim 10 , wherein the first valve selectively converts between a two-stage compression path in which fluid flowing into the first inlet and passing through the first impeller and the second impeller in sequence, are compressed and discharged, and a single-stage compression flow path in which fluid flowing out of the first outlet and the second outlet are joined and discharged. 
     
     
         12 . The turbo compression system as claimed in  claim 11 , wherein in case fluid is controlled to flow along with the two-stage compression path, the second valve is controlled to communicate the second intake flow path with the second compression flow Path, and in case fluid is controlled to flow along with the single-stage compression path, the second valve is controlled to communicate the second intake flow path with the inflow path. 
     
     
         13 . The turbo compression system as claimed in  claim 10 , wherein the first valve and the second valve are provided as three-way valves.