Multi-Connected Air Conditioner Unit and Method of Operating the Same

Abstract

A multi-connected air conditioner unit and method of operating the same, wherein, when an air-side heat exchanger is put into operation, and a water-side heat exchanger is not put into operation, a four-way valve is used to control a refrigerant to pass through said air-side heat exchanger, in realizing the refrigerating or heating operation of said unit; when said air-side heat exchanger is not put into operation, and said water-side heat exchanger is put into operation, said four-way valve is used to control said refrigerant to pass through said water-side heat exchanger to heat water, in achieving full recovery of heat; when both said compressors are put into operations concurrently, a dispenser is used to transport refrigerant oil separated by a second oil separator to an oil inlet pipe, then it is input to said compressor via an air suction pipe; and when a portion of compressor is put into operation, and another portion of compressor is not put into operation, since said air suction pipe is installed upright, said refrigerant oil getting into said compressor not in operation will return to said dispenser under action of gravitational force, then it will move into said compressor in operation, hereby ensuring safety of compressor operations.

1 . A multi-connected air conditioner unit and method of operating the same, said air conditioner unit includes: a chassis, and a fixed speed compressor, a digital compressor, a first oil separator, a four-way valve, a water-side heat exchanger, an air-side heat exchanger, a super-cooling circuit, a second oil separator, a control box, a dispenser, an oil inlet pipe, an air suction pipe, a refrigeration system component, and connection pipe lines disposed thereon, wherein, a set of heat recovery devices are additionally provided in a cavity of said water-side heat exchanger, and it is characterized in that,
 said method comprising following steps: when said air-side heat exchanger is put into operation, and said water-side heat exchanger is not put into operation, said four-way valve is used to control refrigerant to pass through said air-side heat exchanger, in realizing the refrigerating or heating operation of said unit; when said air-side heat exchanger is not put into operation, and said water-side heat exchanger is put into operation, said four-way valve is used to control said refrigerant to pass through said water-side heat exchanger to heat water, in achieving full recovery of heat; when both said compressors are put into operations concurrently, said dispenser is used to transport refrigerant oil separated by said second oil separator to an oil inlet pipe, then it is input to said compressor via said air suction pipe; and when a portion of compressor is put into operation, and another portion of compressor is not put into operation, since said air suction pipe is installed upright, said refrigerant oil getting into said compressor not in operation will return to said dispenser under action of gravitational force, then it will move into said compressor in operation, hereby ensuring safety of compressor operations.   
     
     
         2 . The multi-connected air conditioner unit and method of operating the same as claimed in  claim 1 , and it is characterized in that:
 said control box includes an outer shell, and a partition plate inside said outer shell, to form a lower portion receiving space and an upper portion receiving space.   
     
     
         3 . The multi-connected air conditioner unit and method of operating the same as claimed in  claim 1 , and it is characterized in that:
 rim of a through hole of said chassis is provided with a fastening portion to fasten a suspension rope.   
     
     
         4 . The multi-connected air conditioner unit and method of operating the same as claimed in  claim 1 , and it is characterized in that:
 said compressors are wrapped around with muffling devices.   
     
     
         5 . The multi-connected air conditioner unit and method of operating the same as claimed in  claim 1 , and it is characterized in that:
 a bottom plate and side plates of said control box are provided with holes for electric wires to pass through.   
     
     
         6 . The multi-connected air conditioner unit and method of operating the same as claimed in  claim 1 , and it is characterized in that:
 said heat recovery device is provided with water inlet holes and water outlet holes.