US Patent: 2,380,226
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| Automatic Compressor Regulator
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Patentee:
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| John R. Frantz (exact or similar names) - Wauwatosa, Milwaukee County, WI |
| Assignees: |
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Le Roi Co. - West Allis, Milwaukee County, WI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Aug. 18, 1941 |
| Granted: |
Jul. 10, 1945 |
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Patent Pictures:
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Joel Havens
"Vintage Machinery" entry for Le Roi Co.
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Description: |
| Abstract:
The present invention relates in general to improvements in the art of controlling the operation of fluid pumping systems or the like, and relates more specifically to improvements in the construction and operation of automatic regulators for controlling the speed of internal combustion engines or similar motors while driving air compressors or similar pumping apparatus. An object of the invention is to provide an improved automatic compressor regulator, which is simple in construction and efficient in operation. It has heretofore been common practice to utilize fluid pumping systems of the type comprising an internal combustion engine driven air compressor equipped with an automatic unloading device and slow down device for controlling the minimum engine speed, and also provided with a governor for controlling the maximum speed of the engine. With such a system, when the compressor is unloaded the slow down device automatically reduces the engine speed to a definite minimum, whereas when the compressor again becomes active the speed governor functions to restore the engine speed to its predetermined maximum; but no proper provision is made for regulating or varying the engine speed according to the actual demand for compressed air. If the demand for air is light, the speed of the engine is subject to rather frequent and extreme variations from minimum when idling to maximum when pumping, and vice versa, and the operation of an internal combustion engine under such conditions is far from being efficient or economical. While it has heretofore been proposed to obviate this difficulty by causing variations in the demand for air to vary the engine speed through the speed governor, this type of regulation is objectionable because it is not direct and independent of the other controls.
Claim:
In a regulating system for an internal combustion engine driven air compressor having an air receiver, a carburetor for supplying fuel to the engine, a speed governor for controlling the flow of fuel to the engine from said carburetor, an unloading device for the compressor, a fuel control valve interposed between the carburetor and the engine, and mechanism for controlling the opening of said valve directly in accordance with variations in receiver pressure and entirely independently of said speed governor and of said unloading device. |
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