Patent US3642201A successfully refreshed from Google Patents.
US3642201A
Expired / Lapsed
US
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Humidifier control
Assignee: Clark Reliance LLC
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Filing: 1969-08-05
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Granted: 1972-02-15
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Expires: 1989-08-05
Abstract
Abstract A control unit for a humidification system using steam as the air moistening agent. The unit includes a closed chamber for lowpressure exit steam located within a closed chamber for highpressure entry steam to assure that the exiting steam is dry or superheated. A slide valve located in the entry steam chamber opens and closes a port between the two chambers in response to the moisture condition in a space being humidified by steam from the control unit.
Inventors
- 👤 Peter F Potchen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:15
CPC Classifications
F; F24; F24F; F24F6/00; F24F6/18; B; B01; B01F; B01F23/00; B01F23/20; B01F23/21; B01F35/00; B01F35/20; Y; Y10; Y10S; Y10S261/00; Y10S261/76; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3021; Y10T137/304; Y10T137/3052; Y10T137/3068; Y10T137/3071
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
172 words
A device for controlling steam passage from a steam supply line to a steam disperser in a humidification system, comprising an outer casing defining a high-pressure steam entry chamber communicating with a steam supply, an inner casing within said entry chamber and defining a lower pressure steam exit chamber communicating with the steam disperser, said inner casing having a valve port communicating between said inlet chamber and said exit chamber, a valve slide adapted for linear movement in said entry chamber to open and close said port, humidistat means for sensing the humidity in an area being humidified and supplying fluid at a variable pressure in accordance with the humidity in the area being humidified, and fluid pressure responsive means controlled by said humidistat means for moving said valve slide to a fully open position or to a partly open position in accordance with the humidity in the area being humidified, whereby the flow of steam to said steam disperser is modulated i accordance with the humidity in the area being humidified.
Claim 2
Independent Claim
172 words
A device for controlling steam passage from a steam supply line to a steam disperser in a humidification system, comprising an outer casing defining a high-pressure steam entry chamber communicating with a steam supply, an inner casing within said entry chamber and defining a lower pressure steam exit chamber communicating with the steam disperser, said inner casing having a valve port communicating between said inlet chamber and said exit chamber, a valve slide adapted for linear movement in said entry chamber to open and close said port, humidistat means for sensing the humidity in an area being humidified and supplying fluid at a variable pressure in accordance with the humidity in the area being humidified, and fluid pressure responsive means controlled by said humidistat means for moving said valve slide to a fully open position or to a partly open position in accordance with the humidity in the area being humidified, whereby the flow of steam to said steam disperser is modulated i accordance with the humidity in the area being humidified.
Claim 3
Dependent Claim
63 words
A device as defined in claim 1, including a generally flat valve seat in said inner casing surrounding said port, and wherein said valve slide slides across said valve seat between its open and closed positions, said valve slide being held in sealing engagement with said valve seat in the closed position by the pressure of steam seeking to enter said exit chamber.
Claim 4
Dependent Claim
73 words
A device as defined in claim 1 wherein said outer casing has a condensate drain in the bottom thereof, and a valve in said steam entry chamber for opening said drain to release condensate collected in the bottom of said chamber, said valve having a float operatively connected thereto to open said valve in response to the buoyant force caused by the collection of sufficient condensate in the bottom of said entry chamber.
Claim 5
Dependent Claim
83 words
A device as defined in claim 1 wherein said fluid pressure responsive means for moving said valve slide comprises a fluid cylinder, a piston in said cylinder, operatively connected to said valve slide, a spring biasing said piston to a position wherein said valve slide is in its closed position, fluid pressure supplied by said humidistat means acting on said piston, in a direction tending to counter the force of said spring an amount depending upon the humidity in the area being humidified.
Claim 6
Dependent Claim
18 words
A device as defined in claim 4 including externally accessible means for adjusting the tension in said spring.
Claim 7
Dependent Claim
39 words
A device as defined in claim 4 including externally accessible means for limiting the movement of said piston in a direction tending to open said port, whereby to limit the maximum opening between said valve slide and said port.
Claim 8
Independent Claim
180 words
A device for controlling steam passage from a steam supply line to a steam disperser in a humidification system which uses steam as an air moistening agent, comprising an outer casing defining a high pressure steam entry chamber communicating with the steam supply line, an inner casing within said entry chamber and defining a lower pressure steam exit chamber communicating with the steam disperser, said inner casing having a valve port communicating between said inlet chamber and said exit chamber, means forming a generally flat valve seat in said outer chamber surrounding said valve port, a valve slide adapted for linear movement on said valve seat between a position completely or partly opening said port and a position closing said port, humidistat means for sensing the humidity in an area being humidified and supplying fluid at a variable pressure in according with the humidity in the area being humidified and fluid pressure responsive means controlled by said humidistat means for moving said valve slide in response to the relative humidity in the are being humidified by steam from said disperser.
Claim 9
Independent Claim
180 words
A device for controlling steam passage from a steam supply line to a steam disperser in a humidification system which uses steam as an air moistening agent, comprising an outer casing defining a high pressure steam entry chamber communicating with the steam supply line, an inner casing within said entry chamber and defining a lower pressure steam exit chamber communicating with the steam disperser, said inner casing having a valve port communicating between said inlet chamber and said exit chamber, means forming a generally flat valve seat in said outer chamber surrounding said valve port, a valve slide adapted for linear movement on said valve seat between a position completely or partly opening said port and a position closing said port, humidistat means for sensing the humidity in an area being humidified and supplying fluid at a variable pressure in according with the humidity in the area being humidified and fluid pressure responsive means controlled by said humidistat means for moving said valve slide in response to the relative humidity in the are being humidified by steam from said disperser.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-14 | 1975-08-16 | 1976-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-14 | 1979-08-16 | 1980-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-14 | 1983-08-16 | 1984-02-15 | $7700.00 | Window Closed / Lapsed |