Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Fluid pressure responsive
Patent
1998-09-22
2000-10-31
Walker, W. L.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Fluid pressure responsive
210 85, 210 91, 210130, 210132, 210149, 210180, 210183, 210184, 210315, 210DIG13, 195 461, B01D 35147
Patent
active
061397253
DESCRIPTION:
BRIEF SUMMARY
This invention relates to an oil reclamation device for reconditioning oil used in machinery such as a vehicle engine or a hydraulic system.
BACKGROUND OF THE INVENTION
Oil reclamation devices are already known which condition a bypass flow of oil and work in tandem with a conventional full flow oil filter. In many applications, it is difficult to site the oil reclamation device such that there is easy access to the replaceable components of the oil reclamation device. The problem is accentuated because it is desirable to site the oil reclamation device close to the full flow oil filter, so that both of them can be accessed and serviced at the same time.
SUMMARY OF THE INVENTION
According to a first aspect of the present invention there is provided an oil reclamation device comprising, in a single unit: particle size; and contaminants.
Because the full flow filter, partial flow filter and vapourising chamber are all combined in a single unit, the oil reclamation device is compact and easy to service.
Preferably, the full flow filter and partial flow filter are fitted to the housing of the vapourising chamber.
Preferably the full flow filter extracts solid contaminants having a particle size of 15 microns or greater and the partial flow filter extracts solid contaminants having a particle size of 1 micron or greater.
Preferably, the full flow filter is fitted around the partial flow filter. The full flow filter and partial flow filter may be fitted within a casing which is fitted to the housing of the vapourising chamber. The casing may comprise an oil flow passage which directs oil through the full flow filter and through the partial flow filter. The oil passage may contain a bypass valve which allows oil to bypass the full flow filter if it becomes blocked.
The bypass valve may comprise means for detecting the operative state of the valve. Means may be provided for indicating to an operator of the machinery, to which the oil reclamation device is fitted, that the bypass valve is open. The indicating means may comprise a warning light on an indicator panel, although any suitable device is contemplated, such as a warning buzzer or bell. If the machinery comprises an internal combustion engine, the means for detecting the operative state of the valve may provide an output to an engine management system, which may for example prevent the engine being restarted while the bypass valve is blocked or may otherwise indicate to an operator that servicing is required.
The oil passage may be provided with an oil drain tap from which oil samples may be taken. The oil may then be analysed to determine its conditions.
Preferably, the flow of oil from the oil passage into the partial flow filter is controlled by a non-return valve which prevents contaminants from the partial flow filter falling back into the oil passage if the oil pressure in the oil passage subsides.
The partial flow filter may be fed by a metering jet and preferably comprises a filter element of compressed cotton fibre. Preferably, a coarse filter is provided beneath the metering jet to prevent contaminants in the oil passage blocking the jet if the full flow filter becomes clogged and the bypass valve opens.
According to a second aspect of the present invention there is provided an oil reclamation device comprising a housing defining a vapourising chamber and a heating device for heating the housing, means being provided for detecting the temperature of the housing.
Preferably, means are provided for controlling the output of the heating device in response to the detected temperature of the housing. An indicating device may be provided to warn an operator of machinery to which the oil reclamation device is fitted that the temperature of the housing of the vapourising chamber is not within an acceptable range.
BRIEF DESCRIPTION OF THE DRAWING
For a better understanding of the present invention, and to show how it may be carried into effect, reference will now be made, by way of example, to the accompanying drawings in which:
FIG. 1 is a cross-
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Barr Richard Henry Howard
Davies Albert Neal
Cecil Terry K.
Purdayn Filter Technologies Inc
Walker W. L.
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