US3602252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constant flow heater valve
Assignee: Eaton Corp
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Filing: 1969-08-18
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Granted: 1971-08-31
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Expires: 1989-08-18
Abstract
Abstract A valve which has gradually increasing flow with increasing pressure and a constant flow valve. The increasing flow valve has a shear-type valve at the inlet for adjusting water flow from an automobile engine or the like. The shear-type valve is operated by a vacuum motor and introduces a desired flow rate into a control chamber. The control chamber has a sensor diaphragm disposed thereacross and the pressure across the sensor diaphragm is provided to be the same as the pressure across the shear-type valve at the inlet of the system. Also, a compensator chamber is provided together with a compensator diaphragm. The pressure across the compensator diaphragm is provided to be the same as the pressure across the throttle area associated with the sensor diaphragm. The sensor diaphragm is biased by means of a coil spring away from its outlet thereby tending to open the outlet. Increasing pressure across the shear-type valve causes increasing pressure across the sensor diaphragm which tends to throttle the flow and thereby close the outlet. However, the pressure across the throttle is also the same pressure which is across the compensator diaphragm and which is oppositely directed. The compensator diaphragm has a larger area than the throttle area, and accordingly increasing pressure tends to increase the flow by opening the sensor diaphragm. The effect is similar to increasing the spring force on the sensor diaphragm with increasing pressure at the inlet. The constant flow valve has a butterfly plate which is operated by a vacuum motor and which has a diaphragm disposed in the path of the liquid flow and which thereby uses the liquid flow to oppose the action of the vacuum motor on the butterfly plate. In this way the action of the flow is opposed to the opening of the butterfly valve and accordingly a constant rate of flow from the inlet to the outlet is maintained.
Inventors
- 👤 Gene A Barnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:00
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; G05D7/0106; G05D7/0113; B; B60; B60H; B60H1/00; B60H1/00485; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7782; Y10T137/7784; Y10T137/7787; Y10T137/7788
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
157 words
A flow control valve comprising: a valve body having a control chamber, an inlet leading to said control chamber and an outlet leading therefrom, valve adjustment means at the inlet for regulating the rate of flow to said control chamber, said control chamber having a sensor diaphragm disposed as one wall thereof, said sensor diaphragm engaging said outlet and maintaining a throttling action therewith, said valve body also having a pressure chamber and a compensator chamber, said pressure chamber having said sensor diaphragm as one wall thereof and having a compensator diaphragm as a second wall thereof, said compensator diaphragm forming a common wall between said pressure chamber and said compensator chamber, means mechanically interconnecting said sensor and compensator diaphragms to cause both diaphragms to move together, means communicating fluid from said inlet upstream of said valve adjustment means to said pressure chamber, and means communicating fluid and pressure from said control chamber to said compensator chamber.
Claim 2
Dependent Claim
157 words
A flow control valve comprising: a valve body having a control chamber, an inlet leading to said control chamber and an outlet leading therefrom, valve adjustment means at the inlet for regulating the rate of flow to said control chamber, said control chamber having a sensor diaphragm disposed as one wall thereof, said sensor diaphragm engaging said outlet and maintaining a throttling action therewith, said valve body also having a pressure chamber and a compensator chamber, said pressure chamber having said sensor diaphragm as one wall thereof and having a compensator diaphragm as a second wall thereof, said compensator diaphragm forming a common wall between said pressure chamber and said compensator chamber, means mechanically interconnecting said sensor and compensator diaphragms to cause both diaphragms to move together, means communicating fluid from said inlet upstream of said valve adjustment means to said pressure chamber, and means communicating fluid and pressure from said control chamber to said compensator chamber.
Claim 3
Dependent Claim
39 words
A flow control valve in accordance with claim 1 wherein said throttling action occurs over a limited surface area of said sensor diaphragm and whereiN said limited surface area is less than the surface area of said compensator diaphragm.
Claim 4
Dependent Claim
21 words
A flow control valve in accordance with claim 2 wherein said sensor and compensator diaphragm are rigidly coupled to move together.
Claim 5
Dependent Claim
47 words
A flow control valve in accordance with claim 3 wherein a coupling rod extends from said control clamber to said compensator chamber and wherein said means for communicating fluid pressure from said control chamber to said compensator chamber comprises a passageway formed internally of said coupling rod.
Claim 6
Dependent Claim
86 words
A flow control valve comprising: a valve body having a cavity formed therein, said cavity having an inlet and an outlet, a pair of diaphragms disposed within said cavity and dividing the same into three chambers, the outer two of said three chambers communicating with said outlet and the intermediate chamber communicating with said inlet, means coupling the two diaphragms to move together, one of said diaphragms disposed to have a throttling action with said outlet, and means biasing said one diaphragm away from said outlet.
Claim 7
Dependent Claim
86 words
A flow control valve comprising: a valve body having a cavity formed therein, said cavity having an inlet and an outlet, a pair of diaphragms disposed within said cavity and dividing the same into three chambers, the outer two of said three chambers communicating with said outlet and the intermediate chamber communicating with said inlet, means coupling the two diaphragms to move together, one of said diaphragms disposed to have a throttling action with said outlet, and means biasing said one diaphragm away from said outlet.
Claim 8
Dependent Claim
59 words
A flow control valve in accordance with claim 5 wherein said means biasing said one diaphragm comprises a coil spring disposed between said diaphragm and a wall of said cavity and wherein said means coupling the two diaphragms comprises a hollow tubing communicating fluid from the outlet to the side of said other diaphragm oppositely of said intermediate chamber.
Claim 9
Dependent Claim
141 words
A flow control valve comprising a valve body having a cavity with an inlet and an outlet, a pair of diaphragms subdividing said cavity into first, second and third consecutive chambers, the first diaphragm dividing the first and second chambers being larger than the second diaphragm dividing the second and third chambers, means mechanically interconnecting said first and second diaphragms to cause both diaphragms to move together, the first diaphragm having a portion generally overlying said outlet, said portion of said first diaphragm having less surface area than said second diaphragm, said inlet communicating with said first and second chambers, a low pressure throttling area formed in the vicinity of said outlet at said first diaphragm portion, and said low pressure throttling area being communicable with said third chamber, whereby increasing pressure at said inlet causes increasing flow at said outlet.
Claim 10
Dependent Claim
141 words
A flow control valve comprising a valve body having a cavity with an inlet and an outlet, a pair of diaphragms subdividing said cavity into first, second and third consecutive chambers, the first diaphragm dividing the first and second chambers being larger than the second diaphragm dividing the second and third chambers, means mechanically interconnecting said first and second diaphragms to cause both diaphragms to move together, the first diaphragm having a portion generally overlying said outlet, said portion of said first diaphragm having less surface area than said second diaphragm, said inlet communicating with said first and second chambers, a low pressure throttling area formed in the vicinity of said outlet at said first diaphragm portion, and said low pressure throttling area being communicable with said third chamber, whereby increasing pressure at said inlet causes increasing flow at said outlet.
Claim 11
Dependent Claim
23 words
A flow control valve in accordance with claim 7 wherein said first and second diaphragms are rigidly coupled by a hollow conductive tubing.
Claim 12
Dependent Claim
31 words
A flow control valve in accordance with claim 8 wherein a shear-type area adjustment valve is disposed between the inlet and the communication path of said inlet with said first chamber.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |