Abstract:
A cleaning system for providing a compressed fluid and to clean a coil of an air conditioner include a portable power supply; a motor connected to the portable power supply to rotate a shaft; a cam connected to the shaft to drive a reciprocating linear motion camshaft; and a piston connected to the camshaft to provide pressurized fluid.

Description:
FIELD OF THE INVENTION 
       [0001]    This invention relates generally to pressure systems and more particularly to a portable pressure system used principally for gently cleaning fine particulate matter from hard to reach AC evaporator coils. 
       BACKGROUND 
       [0002]    Dirt and other contaminates, such as grease, pollen, hair spray, etc., on air-conditioning coils present a serious maintenance problem in residential or commercial buildings. Dirty coils reduce airflow, decrease efficiency, reduce HVAC capacity, and are a major cause of compressor failure and sick building syndrome. 
         [0003]    Indoor coils known as evaporator coils are located in the air handler portion of the system and are generally fitted with intake filters 
         [0004]    The most common type of AC coil is the A-frame type whereby a pair of coils is arranged back-to-back forming an “A”. Such coils are placed in the air handling system so as to pass intake air across the coils, using a blower fan, and into the ventilation ducts. Contaminates in the air stream tend to settle on the face of one coil and on the under side of the adjacent coil. Using brushes, foams, water spray and the like to clean the exterior faces of coils while in place simply forces the contaminates further into the coils because of inaccessibility of the coils from either side. 
       SUMMARY 
       [0005]    A cleaning system for providing a compressed fluid and to clean a coil of an air conditioner include a portable power supply; a motor connected to the portable power supply to rotate a shaft; a cam connected to the shaft to drive a reciprocating linear motion camshaft; and a piston connected to the camshaft to provide pressurized fluid. 
         [0006]    The portable power supply may be a cordless drill. 
         [0007]    The shaft may be connected to a drill bit of a cordless drill. 
         [0008]    The piston may be a rotary piston. 
         [0009]    The piston may be a scroll piston. 
         [0010]    The piston may be an air piston. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0011]    The invention may be understood by reference to the following description taken in conjunction with the accompanying drawings, in which, like reference numerals identify like elements, and in which: 
           [0012]      FIG. 1  illustrates a diagram of the present invention; 
           [0013]      FIG. 2  illustrates another diagram of the present invention, 
       
    
    
     DETAILED DESCRIPTION 
       [0014]      FIG. 1  illustrates a cleaning system  100  which may be used for cleaning coils of an air-conditioning system and includes a portable power supply  105  which may include a battery  103  and a motor  101  which may be powered by and connected to the battery  103 . The portable power supply  105  may be connected to an electrical supply through a plug (not shown) and may be a portable electric drill. The motor  101  may be connected to a first connector shaft  107 . The first connector shaft  107  which may rotate in response to the rotation of the motor  101  may be connected to a first connector device  109  which may be connected to a second connector shaft  111  which may be a drill bit and which may rotate in response to the rotation of the first connector shaft  107 . The second connector shaft  111  may be connected to a cam  113  and may rotate the cam  113  which may be connected to a piston shaft  115  (a follower) which provides reciprocating (back and forth) linear motion. The piston shaft  115  may be connected to a piston  117  which may provide reciprocating linear motion in response to the linear motion of the piston shaft  115  within the piston chamber  119 . Air enters the piston chamber  119  by an inlet passageway  121  and exits the piston chamber  119  by an outlet passageway  123 . After the air has entered the piston chamber  119 , a inlet valve and outlet valve which may be positioned in the inlet passageway  121  and the outlet passageway  123  respectively to close and to seal the piston chamber  119 . The piston  117  pressurizes the air in the piston chamber  119 , and the pressurized air is output through the outlet passageway  123  which may extend through the outlet connector  125  which may be connected to the housing  127 . The outlet connector  125  may be a cylinder and may include a threaded portion  129  to attach to other devices such as a pump up sprayer (not shown). 
         [0015]      FIG. 2  illustrates another embodiment of the present invention and illustrates a cordless drill  301  which may be powered by a DC voltage such as 12 V or 15 V or higher. The cordless drill  301  may connect to a reciprocating rod  303  which may move in and out in response to the rotation of the drill of the cordless drill  301 . The reciprocating rod  303  moves an in line rotary air pump or piston  305  to compress air within a chamber  307 . The chamber  307  may include an adjustable regulator  309  which may adjust the pressure within the chamber  307 . The chamber  307  may additionally include an air intake valve  311  to allow air to enter the chamber  307  after the compressed air has been released from the chamber  307 . The piston  305  compresses the air/fluid in response to the reciprocating rod  303 . The chamber  307  may be connected to a spraying container  313  which may store the compressed air until the user activates a spraying device  315  to release the compressed air. The sprayer container  313  may include an external strap  317  to allow the user to carry the spraying container  313 . In addition, the chamber  307  may include a fold-down handle  319  to allow the user to carry the chamber  307 . 
         [0016]    Various compressors which may be used with the present invention are described below. 
         [0017]    Hydraulic compressors are usually divided in four main groups: piston compressors, rotary vane compressors, rotary screw compressors and gear compressors. The piston-models are the most suitable for basic need for compressed air such as energizing small hand tools or air flushing of small quarry drills. Rotary vane-models include also a cooled lubrication system, oil separator, relief valve on the air intake and automatic rotation speed valve. Rotary vane-models are the most suitable for installation on different excavators, mining and other machines. 
         [0018]    A reciprocating compressor or piston compressor is a positive-displacement compressor that uses pistons driven by a crankshaft to deliver gases at high pressure. 
         [0019]    The intake gas enters the suction manifold, then flows into the compression cylinder where it gets compressed by a piston driven in a reciprocating motion via a crankshaft and is then discharged. 
         [0020]    A rotary vane pump is a positive-displacement pump that consists of vanes mounted to a rotor that rotates inside of a cavity. In some cases these vanes can be variable length and/or tensioned to maintain contact with the walls as the pump rotates 
         [0021]    A scroll compressor (also called spiral compressor, scroll pump and scroll vacuum pump) is a device for compressing air or refrigerant. It is used in air conditioning equipment, as an automobile supercharger (where it is known as a scroll-type supercharger) and as a vacuum pump. 
         [0022]    A scroll compressor operating in reverse is known as a scroll expander, and can be used to generate mechanical work from the expansion of a fluid, compressed air or gas. Many residential central heat pump and air conditioning systems and a few automotive air conditioning systems employ a scroll compressor instead of the more traditional rotary, reciprocating, and wobble-plate compressors. 
         [0023]    A rotary screw compressor is a type of gas compressor which uses a rotary type positive displacement mechanism. They are commonly used to replace piston compressors where large volumes of high pressure air are needed, either for large industrial applications or to operate high-power air tools such as jackhammers. 
         [0024]    While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof have been shown by way of example in the drawings and are herein described in detail. It should be understood, however, that the description herein of specific embodiments is not intended to limit the invention to the particular forms disclosed.