COMPOSITION AND METHODS FOR INJECTION OF SEALANTS INTO AIR CONDITIONING AND REFRIGERATION SYSTEMS

Register CIPO Patent
Document Number 02469966
Status In Force
Filing Date 2004-06-04
Open to Public Date 2005-12-04
Publication Date 2005-12-04
Grant Date 2013-01-08
Owner ALLTEMP PRODUCTS COMPANY LIMITED (Canada)
Inventor
  • Appler, Paul
  • Cranton, George E.
  • Brass, Jack

Abstract

The use of sealants based on organosilanes for refrigeration and air conditioning systems is made possible by control of the rate of introduction and viscosity of the sealant mixture within certain ranges. An appropriate choice of organosilane sealant is made to allow effective sealing of small pinhole size leaks in the air conditioning or refrigeration system. The organosilver is then combined with a miscible lubricant at particular ratios to provide the proper mixture viscosity for injection into the refrigerant system to prevent bearing seizure. specific orifice sizes are selected for an apparatus to ensure that the composition is injected at the flow rates required to prevent liquid slugging and subsequent compressor shutdown or failure. In addition, effective introduction of the mixture requires certain procedures be performed. Injection procedures are also described that prevent temporary or catastrophic equipment shutdown.

IPC Classes  ?

  • F25B 31/00 - Compressor arrangements
  • F16N 27/00 - Proportioning devices
  • F25B 43/00 - Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
  • F25B 45/00 - Arrangements for charging or discharging refrigerant