Compressor capacity and lubrication control system

Patent 4063855 Issued on December 20, 1977. Estimated Expiration Date:

December 20, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3191854

3448916

3482768

3542497

3582233

3653191

Inventor

Paul, Kermit D.

Assignee

Fuller Company

Application

No. 05/682295 filed on 05/03/1976

US Classes:

418/84, With condition responsive control of non-working fluid184/6.16, Rotary compressor417/228, WITH CONDITION RESPONSIVE CONTROL OF COOLANT OR LUBRICANT418/100, Intermixed incoming working and non-working fluids418/85, With heat exchange means for non-working fluid418/87, Valve regulated non-working fluid418/88, With pump for non-working fluid418/97Non-working and working fluids intermix in working chamber

Examiners

Primary: Vrablik, John J.

Attorney, Agent or Firm

Thomson; Frank H.

International Class

F04C 29/00 (20060101)

Abstract

A compressor capacity control and lubrication system including a nonmodulating capacity regulator for an oil flooded gas compressor such as a rotary screw compressor. The system includes an on-off intake regulator. The lubrication system insures sufficient supply of cooling and sealing lubrication when the machine is operating at loaded conditions and a limited quantity of cooling lubrication when the machine is operating at unloaded conditions. This is accomplished by the use of a pair of gas-liquid reservoirs. One of the reservoirs is vented to atmosphere during unloaded operation of the compressor. Lubricant is supplied from both reservoirs to the compressor when the machine is operating at loaded conditions, but only one of the reservoirs when operating at unloaded conditions.