Rotary compressor with an installed circulation control unit

Abstract

This rotary compressor with an installed circulation control unit utilizes a method to control a rotary compressor to start or stop injecting refrigerant at a predetermined velocity by means of an electromagnetic coil that is installed onto the rotary compressor. The end of the electromagnetic coil is tenon-shaped and enters into a mortise that is formed on a vane or an arm of the rotary compressor so that the operation alternates between suction and compression at a predetermined period, enabling control of the rate of refrigerant circulation. In addition, the rotary compressor does not restart during its operation, which enhances the performance of the air-conditioning system, saves costs and energy, and enables the air-conditioning system to be easily maintained and repaired.

1 - 8 . (canceled) 
     
     
         9 . A rotary compressor with a refrigerant flow-controlling unit capable of regulating flow of refrigerant in and out of said compressor where said controlling unit is installed onto said compressor in such a manner that moving of a vane ( 4 ) to separate a suction chamber ( 7 ) from a compression chamber ( 8 ) during an operation cycle of said compressor for a predetermined interval is controllable. 
     
     
         10 . A rotary compressor of  claim 9 , where said flow-controlling unit comprises an element ( 15 ) capable of being activated to allow its one projecting end engaging into a mortise ( 18 ) in said vane ( 4 ) to hold said vane in a predetermined position and period to make the compressor in a ‘no-load’ condition or inactivated to move said end out of said mortise to allow said compressor in a ‘full-load’ condition. 
     
     
         11 . A rotary compressor of  claim 10  where said projecting end of said element ( 15 ) can be either in a form of simple slanted end or a slanted tooth or any shape to engage in a complementary mortise in said vane ( 4 ). 
     
     
         12 . A rotary compressor of  claim 10  where an additional limit switch ( 25 ) is installed optionally to said compressor such that upon contact of a rolling piston ( 1 ) on an arm ( 26 ) of said switch causes detaching of contact plates ( 27 ) of said switch resulting in stop supplying of electric current into a coil ( 16 ) to make said coil ( 16 ) in ‘OFF’ position, where function of said coil ( 16 ) is to activate said element ( 15 ) when electric current is supplied to make it in ‘ON’ position. 
     
     
         13 . A rotary compressor of  claim 9  where one set to function comprises a rolling piston ( 1 ) with a crankshaft ( 2 ) mounted in a cylinder ( 3 ) having a vane ( 4 ) movable to and fro along a slot ( 5 ) upon contacting said rolling piston or pushing of a spring ( 6 ), and where a refrigerant flow-controlling unit is installed to each of said set;
 and where there may be either one or multiple sets in one rotary compressor where said assembly as multiple sets helps to minimize the energy consumption as program can be set to turn on and off just one or more sets at a particular time point for a predetermined period to allow most efficient use of an air-conditioning system. 
 
     
     
         14 . A unit for controlling of flow of refrigerant in a rotary compressor comprises an element ( 15 ) capable of moving when activated to have its projecting end engage into a mortise in a vane ( 4 ) of said rotary compressor to hold said vane in a predetermined position and period, where said element housed in a structure ( 10 ,  16 ) to allow it to function properly. 
     
     
         15 . A method for controlling flow of refrigerant in a rotary compressor comprising steps of:
 installing a unit for controlling flow of refrigerant in and out said compressor, to be mounted through a shield ( 17 ) of at least one set to function of said compressor,   activating an element ( 15 ) of said unit to move and engage its projecting end into a mortise in a vane ( 4 ) of said rotary compressor to hold said vane in a predetermined position and period.   
     
     
         16 . A rotary compressor of  claim 10 , where said flow-controlling unit alternatively comprises an element ( 15 ) capable of being activated to allow its one end engaging into a mortise ( 18 ) in a tube ( 22 ) connecting to said vane ( 4 ) to hold said vane in a predetermined position and period to make the compressor in a ‘no-load’ condition or inactivated to move said end out of said mortise to allow said compressor in a ‘full-load’ condition.