Patent
Environmental protection refrigerant disposal and charging system
Robert L. Cain
- 19 Nov 1980
114
TL;DR: In this article, an environmental protection system and method for withdrawing and charging refrigerants, particularly fluorocarbon refrigerants with respect to refrigeration systems as used for refrigeration, dehumidifying, air conditioning and the like without contamination of the atmosphere is presented.
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Abstract: The invention pertains to an environmental protection system and method for withdrawing and charging refrigerants, particularly fluorocarbon refrigerants, with respect to refrigeration systems as used for refrigeration, dehumidifying, air conditioning and the like without contamination of the atmosphere. Refrigerant is evacuated from a refrigeration system through a closed circuit into a closed disposal or storage container, and in an embodiment of the invention direct evacuation pumping of the refrigerant may be proceeded by drawing the majority of the refrigerant from the refrigeration system by means of a preliminary vacuum tank connected in series with a refrigerant disposal container. Additionally, the invention contemplates combining a refrigerant charging circuit with the refrigerant evacuation circuit in order to provide complete refrigeration system servicing without the release of refrigerant to the atmosphere.
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Citations
Patent
Refrigerant recovery and purification system
Kenneth W. Manz,Roger D Shirley +1 more
- 08 Jul 1988
TL;DR: In this article, a two-wheel hand truck is used to transport a refrigerant recovery system, which includes a compressor having an input coupled through an evaporator and through a solenoid valve to the refrigeration system from which refrigerant is to be withdrawn, and an output coupled through a condenser to a storage container.
160
Patent
Refrigerant recovery, purification and recharging system
Kenneth W. Manz,Roger D Shirley,Richard D Parks,Dennis W Hickman +3 more
- 07 Feb 1989
TL;DR: In this article, a system for recovering, purifying and recharging refrigerant in a refrigeration system comprises a refrigerant compressor having an input connected through an evaporator and a recovery control valve to a system from which refrigerant is to be recovered, purified and recharged.
103
Patent
Refrigerant recovery and purification system.
Shelton E. Taylor
- 21 Oct 1986
TL;DR: In this article, a refrigerant recovery and purification system comprises a pair of accumulators (32), (34) connected in line between the compressor (12) and the refrigerant system being evacuated.
73
Patent
Service station for refrigeration equipment
Ralph C. Lower,Kenneth W. Manz,Gary P. Murray +2 more
- 29 Apr 1985
TL;DR: In this paper, a microprocessor-based controller includes facility for operator programming of the vacuum time and oil and refrigerant charge quantities, and for self- or operator-implemented diagnostics.
72
Patent
System and method for diagnosing the operation of air conditioner systems
Robert H. Proctor,Dennis P. Eichenlaub +1 more
- 01 Apr 1988
TL;DR: In this article, a microprocessor provides a diagnostic capability, and includes tables of acceptable values of parameters, such as air discharge temperature, suction pressure, etc., for different automobile makes and air conditioner types; provision is made for adjusting the acceptable ranges of such values due to ambient factors, of which ambient relative humidity may be one.
70
References
Patent
Air conditioner servicing unit
Kenneth R White
- 02 Jan 1974
TL;DR: In this article, the authors present an approach for servicing automobile air conditioning systems, as well as charging them with refrigerant and compressor lubricant, which is done to the suction side of the compressor while it is operating.
28
Patent
Electrically controlled refrigerant charging device
Robert A Essig,Richard A Johnson,William V Miller +2 more
- 13 Feb 1967
TL;DR: In this paper, a refrigerant charging apparatus for a refrigeration installation consisting of an electrically controlled intake valve, having an intake port adapted for to be detachably connected to a source of coolant and an evacuation port adapted to be attached to said register port of the suction line, was presented.
23
Patent
Temperature compensating refrigerant charging device
Ralph E Bruce
- 15 Jul 1970
TL;DR: In this article, a temperature compensating refrigerant charging device and refrigeration servicing unit comprising a volumetric refrigerant flow establishing unit such as a VOLUME 7, 2019 charging pump controlled by a temperature-responsive timer assembly comprising a thermistor-controlled, pulser-actuated counter which may be pre-set for the desired weight of the refrigerant to be placed in a refrigeration unit.
17
Patent
Refrigeration system servicing unit with dispensing pump and connector
Ralph E Bruce
- 23 Aug 1968
15
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