Viscosity regulating valve
First Claim
1. An integrated drive generator assembly for generating electricity comprising;
- a generator controlled and cooled by a flow of oil, a cooling unit to cool the oil, a valve for regulating the temperature and viscosity of oil flowing to the generator including a housing defining a bore, a first inlet supplying hydraulic fluid at a first temperature to said bore, a second inlet supplying hydraulic fluid at a second temperature to said bore and an outlet through which hydraulic fluid exits said bore at a third temperature whereby oil flowing to said generator is maintained within an optimal operating range.
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Accused Products
Abstract
The subject invention is a valve for regulating the viscosity of fluid utilized by an integrated drive generator (IDG). The valve includes a housing defining a bore having a first inlet supplying “cold” hydraulic fluid at a first viscosity and a second inlet supplying “hot” hydraulic fluid at a second viscosity. A spool valve disposed within the bore has at least one land to proportionally control the flow of hydraulic fluid through the inlets. Hydraulic fluid from the first and second inlets mixes within the valve and exits the valve through an outlet at an optimum viscosity for the operation of the IDG. A flow restrictor creates a pressure force on the spool valve that is proportional to the viscosity of the hydraulic fluid flowing to the IDG. The pressure force acts to move the spool valve such that the spool valve partially blocks the flow of hydraulic fluid through the first and second inlets, thereby controlling the proportion of “cold” and “hot” fluid to maintain the viscosity of the hydraulic fluid flowing to the IDG within an optimum range.
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Citations
18 Claims
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1. An integrated drive generator assembly for generating electricity comprising;
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a generator controlled and cooled by a flow of oil, a cooling unit to cool the oil, a valve for regulating the temperature and viscosity of oil flowing to the generator including a housing defining a bore, a first inlet supplying hydraulic fluid at a first temperature to said bore, a second inlet supplying hydraulic fluid at a second temperature to said bore and an outlet through which hydraulic fluid exits said bore at a third temperature whereby oil flowing to said generator is maintained within an optimal operating range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An integrated drive generator assembly including a generator controlled and cooled by the flow of oil, a cooling unit to cool the oil, and a valve for regulating the temperature of oil utilized by the generator, said valve comprising;
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a housing defining a bore;
a first inlet supplying hydraulic fluid at a first temperature to said bore;
a second inlet supplying hydraulic fluid at a second temperature to said bore;
a spool valve disposed within said bore and having at least one land disposed to proportionally block the flow of hydraulic fluid through said inlets;
an outlet through which hydraulic fluid exits said bore at a third temperature. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification