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US3880229A
Expired / Lapsed
US
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Heat exchange system and method and control device therefor
Assignee: Robertshaw Controls Co
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Filing: 1973-11-28
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Granted: 1975-04-29
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Expires: 1993-11-28
Abstract
Abstract A heat exchange system having a source of heat exchange output fluid for effecting a heat exchange function and having a source of return fluid resulting from said output fluid providing its heat exchange function. A thermally operated element controls the amount of flow of the output fluid from the source in relation to the temperature of the thermally operated element. A sensing device senses the temperature effect of the heat exchange function in relation to a predetermined temperature that the heat exchange system is to provide, the sensing device directing one of the output fluid and the return fluid to the thermally operated element to cause the same to change the amount of flow of the output fluid when the temperature effect deviates from the predetermined temperature a certain amount whereby the thermally responsive element is subject to a relatively wide swing in temperature for large control movement thereof in relation to a relatively narrow swing in temperature at the sensing device that causes such operation of the thermally operated element.
Inventors
- 👤 Edward N Caldwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:06
CPC Classifications
F; F24; F24F; F24F11/00; F24F11/70; F24F11/72; F24F11/74; F24F11/76
Claims Analysis
Total Claims: 52
Claim 1
Independent Claim
167 words
A heat exchange system comprising a zone to be treated a source of heat exchange output fluid for effecting a heat exchange function in said zone, a source of return fluid resulting from said output fluid providing its heat exchange function in said zone, thermally operated means for controlling the amount of flow of said output fluid from said source that is to be utilized for said heat exchange function in said zone in relation to the temperature of said thermally operated means, sensing means for sensing the temperature effect of said heat exchange function in said zone in relation to a predetermined temperature that said heat exchange system is to provide in said zone, and means controlled by said sensing means for directing one of said output fluid and said return fluid to said thermally operated means to cause the same to change the amount of flow of said output fluid when said temperature effect in said zone deviates from said predetermined temperature a certain amount.
Claim 2
Dependent Claim
167 words
A heat exchange system comprising a zone to be treated a source of heat exchange output fluid for effecting a heat exchange function in said zone, a source of return fluid resulting from said output fluid providing its heat exchange function in said zone, thermally operated means for controlling the amount of flow of said output fluid from said source that is to be utilized for said heat exchange function in said zone in relation to the temperature of said thermally operated means, sensing means for sensing the temperature effect of said heat exchange function in said zone in relation to a predetermined temperature that said heat exchange system is to provide in said zone, and means controlled by said sensing means for directing one of said output fluid and said return fluid to said thermally operated means to cause the same to change the amount of flow of said output fluid when said temperature effect in said zone deviates from said predetermined temperature a certain amount.
Claim 3
Dependent Claim
18 words
A heat exchange system as set forth in claim 1 wherein said output fluid is a cooling fluid.
Claim 4
Dependent Claim
18 words
A heat exchange system as set forth in claim 1 wherein said output fluid is a heating fluid.
Claim 5
Dependent Claim
24 words
A heat exchange system as set forth in claim 1 wherein said thermally operated means comprises a wax charged piston and cylinder thermal element.
Claim 6
Dependent Claim
31 words
A heat exchange system as set forth in claim 1 wherein said thermally operated means comprises a plurality of wax charged piston and cylinder thermal elements disposed in abutting aligned relation.
Claim 7
Dependent Claim
82 words
A heat exchange system as set forth in claim 1 and including a duct means for directing said output fluid from said source to said zone to have sAid heat exchange function take place in said zone, said duct means having damper means for controlling the flow of fluid therethrough, said thermally operated means being operatively interconnected to said damper means to control the position of said damper means and, thus, the amount of flow of output fluid through said duct means.
Claim 8
Dependent Claim
42 words
A heat exchange system as set forth in claim 6 wherein said thermally operated means comprises an extendible and retractible member, pulley means operatively interconnecting said extendible and retractible member to said damper means to operatively interconnect said thermally operated means thereto.
Claim 9
Dependent Claim
308 words
A heat exchange system comprising a source of heat exchange output fluid for effecting a heat exchange function, a source of return fluid resulting from said output fluid providing its heat exchange function, thermally operated means for controlling the amount of flow of said output fluid from said source that is to be utilized for said heat exchange function in relation to the temperature of said thermally operated means, sensing means for sensing the temperature effect of said heat exchange function in relation to a predetermined temperature that said heat exchange system is to provide, means controlled by said sensing means for directing one of said output fluid and said return fluid to said thermally operated means to cause the same to change the amount of flow of said output fluid when said temperature effect deviates from said predetermined temperature a certain amount, a duct means for directing said ouput fluid from said source to a desired area to have said heat exchange function take place, said duct means having damper means for controlling the flow of fluid therethrough, said thermally operated means being operatively interconnected to said damper means to control the position of said damper means and, thus, the amount of flow of output fluid through said duct means, said thermally operated means comprising an extendible and retractible member, pulley means operatively interconnecting said extendible and retractible member to said damper means to operatively interconnect said thermally operated means thereto, and spring means interconnected to said pulley means to tend to pull said pulley means in one direction, said pulley means having a slide member interconnected to said spring means, said extendible and retractible member abutting said slide member and moving said slide member in a direction opposite to said one direction in opposite to the force of said spring means when said member is extended.
Claim 10
Dependent Claim
308 words
A heat exchange system comprising a source of heat exchange output fluid for effecting a heat exchange function, a source of return fluid resulting from said output fluid providing its heat exchange function, thermally operated means for controlling the amount of flow of said output fluid from said source that is to be utilized for said heat exchange function in relation to the temperature of said thermally operated means, sensing means for sensing the temperature effect of said heat exchange function in relation to a predetermined temperature that said heat exchange system is to provide, means controlled by said sensing means for directing one of said output fluid and said return fluid to said thermally operated means to cause the same to change the amount of flow of said output fluid when said temperature effect deviates from said predetermined temperature a certain amount, a duct means for directing said ouput fluid from said source to a desired area to have said heat exchange function take place, said duct means having damper means for controlling the flow of fluid therethrough, said thermally operated means being operatively interconnected to said damper means to control the position of said damper means and, thus, the amount of flow of output fluid through said duct means, said thermally operated means comprising an extendible and retractible member, pulley means operatively interconnecting said extendible and retractible member to said damper means to operatively interconnect said thermally operated means thereto, and spring means interconnected to said pulley means to tend to pull said pulley means in one direction, said pulley means having a slide member interconnected to said spring means, said extendible and retractible member abutting said slide member and moving said slide member in a direction opposite to said one direction in opposite to the force of said spring means when said member is extended.
Claim 11
Dependent Claim
181 words
A heat exchange system comprising a source of heat exchange output fluid for effecting a heat exchange function, a source of return fluid resulting from said output fluid providing its heat exchange function, thermally operated means for controlling the amount of flow of said output fluid from said source that is to be utilized for said heat exchange function in relation to the temperature of said thermally operated means, sensing means for sensing the temperature effect of said heat exchange function in relation to a predetermined temperature that said heat exchange system is to provide, and means controlled by said sensing means for directing one of said output fluid and said return fluid to said thermally operated means to cause the same to change the amount of flow of said output fluid when said temperature effect deviates from said predetermined temperature a certain amount, said means controlled by said sensing means comprising a fluid operated valve means for directing said output fluid to said thermally operated means when said sensing means moves said valve means to one of its operating positions.
Claim 12
Dependent Claim
181 words
A heat exchange system comprising a source of heat exchange output fluid for effecting a heat exchange function, a source of return fluid resulting from said output fluid providing its heat exchange function, thermally operated means for controlling the amount of flow of said output fluid from said source that is to be utilized for said heat exchange function in relation to the temperature of said thermally operated means, sensing means for sensing the temperature effect of said heat exchange function in relation to a predetermined temperature that said heat exchange system is to provide, and means controlled by said sensing means for directing one of said output fluid and said return fluid to said thermally operated means to cause the same to change the amount of flow of said output fluid when said temperature effect deviates from said predetermined temperature a certain amount, said means controlled by said sensing means comprising a fluid operated valve means for directing said output fluid to said thermally operated means when said sensing means moves said valve means to one of its operating positions.
Claim 13
Dependent Claim
63 words
A heat exchange system as set forth in claim 9 wherein said means controlled by said sensing means comprises an aspirator for drawing said return fluid to said thermally operated device when said aspirator has fluid directed therethrough, said valve means causing output fluid to be directed through said aspirAtor when said sensing means moves said valve means to another operating position thereof.
Claim 14
Dependent Claim
172 words
A heat exchange system comprising a zone to be treated a source of heat exchange output fluid for effecting a heat exchange function in said zone, thermally operated means for controlling the amount of flow of said output fluid from said source that is to be utilized for said heat exchange function in said zone in relation to the temperature of said thermally operated means, sensing means for sensing the temperature effect of said heat exchange function in said zone in relation to a predetermined temperature that said heat exchange system is to provide in said zone, and means controlled by said sensing means for directing one of a cooling fluid and a heating fluid to said thermally operated means to cause the same to change the amount of flow of said output fluid when said temperature effect deviates from said predetermined temperature a certain amount whereby a wide temperature swing can be provided for said thermally responsive device with only a narrow temperature swing of said temperature effect in said zone.
Claim 15
Dependent Claim
172 words
A heat exchange system comprising a zone to be treated a source of heat exchange output fluid for effecting a heat exchange function in said zone, thermally operated means for controlling the amount of flow of said output fluid from said source that is to be utilized for said heat exchange function in said zone in relation to the temperature of said thermally operated means, sensing means for sensing the temperature effect of said heat exchange function in said zone in relation to a predetermined temperature that said heat exchange system is to provide in said zone, and means controlled by said sensing means for directing one of a cooling fluid and a heating fluid to said thermally operated means to cause the same to change the amount of flow of said output fluid when said temperature effect deviates from said predetermined temperature a certain amount whereby a wide temperature swing can be provided for said thermally responsive device with only a narrow temperature swing of said temperature effect in said zone.
Claim 16
Dependent Claim
18 words
A heat exchange system as set forth in claim 11 wherein said output fluid is a cooling fluid.
Claim 17
Dependent Claim
18 words
A heat exchange system as set forth in claim 11 wherein said output fluid is a heating fluid.
Claim 18
Dependent Claim
24 words
A heat exchange system as set forth in claim 11 wherein said thermally operated means comprises a wax charged piston and cylinder thermal element.
Claim 19
Dependent Claim
31 words
A heat exchange system as set forth in claim 11 wherein said thermally operated means comprises a plurality of wax charged piston and cylinder thermal elements disposed in abutting aligned relation.
Claim 20
Dependent Claim
170 words
A control unit for a heat exchange system or the like comprising a housing means having means adapted for receiving heat exchange output fluid from a source thereof that is to be utilized for effecting a heat exchange function in a zone and for receiving return fluid resulting from said output fluid providing its heat exchange function in said zone, thermally operated means carried by said housing means adapted to control the amount of flow of said output fluid from said source that is to be utilized for said heat exchange function in said zone in relation to the temperature of said thermally operated means, and means adapted to be controlled by a zone temperature sensing means for directing one of said output fluid and said return fluid to said thermally operated means to cause the same to be adapted to change the amount of flow of said output fluid when the temperature effect of said heat exchange function in said zone deviates from a predetermined temperature a certain amount.
Claim 21
Dependent Claim
170 words
A control unit for a heat exchange system or the like comprising a housing means having means adapted for receiving heat exchange output fluid from a source thereof that is to be utilized for effecting a heat exchange function in a zone and for receiving return fluid resulting from said output fluid providing its heat exchange function in said zone, thermally operated means carried by said housing means adapted to control the amount of flow of said output fluid from said source that is to be utilized for said heat exchange function in said zone in relation to the temperature of said thermally operated means, and means adapted to be controlled by a zone temperature sensing means for directing one of said output fluid and said return fluid to said thermally operated means to cause the same to be adapted to change the amount of flow of said output fluid when the temperature effect of said heat exchange function in said zone deviates from a predetermined temperature a certain amount.
Claim 22
Dependent Claim
23 words
A control unit as set forth in claim 16 wherein said thermally operated means comprises a wax charged piston and cylinder thermal element.
Claim 23
Dependent Claim
30 words
A control unit as set forth in claim 16 wherein said thermally operated means comprises a plurality of wax charged piston and cylinder thermal elements disposed in abutting aligned relation.
Claim 24
Dependent Claim
55 words
A control unit as set forth in claim 16 wherein said thermally operated means comprises an extendible and retractible member, pulley means carried by said housing means and being operatively interconnected to said extendible and retractible member and being adapted to be interconnected to a damper means that controls the flow of said output fluid.
Claim 25
Dependent Claim
273 words
A control unit for a heat exchange system or the like comprising a housing means having means adapted for receiving heat exchange ouput fluid from a source thereof that is to be utilized for effecting a heat exchange function and for receiving return fluid resulting from said output fluid providing its heat exchange function, thermally operated means carried by said housing means adapted to control the amount of flow of said output fluid from said source that is to be utilized for said heat exchange function in relation to the temperature of said thermally operated means, means adapted to be controlled by a sensing means for directing one of Said output fluid and said return fluid to said thermally operated means to cause the same to be adapted to change the amount of flow of said output fluid when the temperature effect of said heat exchange function deviates from a predetermined temperature a certain amount, said thermally operated means comprising an extendible and retractible member, pulley means carried by said housing means and being operatively interconnected to said extendible and retractible member and being adapted to be interconnected to a damper means that controls the flow of said output fluid, and spring means carried by said housing member and being interconnected to said pulley means to tend to pull said pulley means in one direction, said pulley means having a slide member interconnected to said spring means, said extendible and retractible member abutting said slide member and moving said slide member in a direction opposite to said one direction in opposition to the force of said spring means when said member is extended.
Claim 26
Dependent Claim
273 words
A control unit for a heat exchange system or the like comprising a housing means having means adapted for receiving heat exchange ouput fluid from a source thereof that is to be utilized for effecting a heat exchange function and for receiving return fluid resulting from said output fluid providing its heat exchange function, thermally operated means carried by said housing means adapted to control the amount of flow of said output fluid from said source that is to be utilized for said heat exchange function in relation to the temperature of said thermally operated means, means adapted to be controlled by a sensing means for directing one of Said output fluid and said return fluid to said thermally operated means to cause the same to be adapted to change the amount of flow of said output fluid when the temperature effect of said heat exchange function deviates from a predetermined temperature a certain amount, said thermally operated means comprising an extendible and retractible member, pulley means carried by said housing means and being operatively interconnected to said extendible and retractible member and being adapted to be interconnected to a damper means that controls the flow of said output fluid, and spring means carried by said housing member and being interconnected to said pulley means to tend to pull said pulley means in one direction, said pulley means having a slide member interconnected to said spring means, said extendible and retractible member abutting said slide member and moving said slide member in a direction opposite to said one direction in opposition to the force of said spring means when said member is extended.
Claim 27
Dependent Claim
197 words
A control unit for a heat exchange system or the like comprising a housing means having means adapted for receiving heat exchange output fluid from a source thereof that is to be utilized for effecting a heat exchange function and for receiving return fluid resulting from said output fluid providing its heat exchange function, thermally operated means carried by said housing means adapted to control the amount of flow of said output fluid from said source that is to be utilized for said heat exchange function in relation to the temperature of said thermally operated means, and means adapted to be controlled by a sensing means for directing one of said output fluid and said return fluid to said thermally operated means to cause the same to be adapted to change the amount of flow of said output fluid when the temperature effect of said heat exchange function deviates from a predetermined temperature a certain amount, said means adapted to be controlled by said sensing means comprising a fluid operated valve means adapted to direct said output fluid to said thermally operated means when said sensing means moves said valve means to one of its operating positions.
Claim 28
Dependent Claim
197 words
A control unit for a heat exchange system or the like comprising a housing means having means adapted for receiving heat exchange output fluid from a source thereof that is to be utilized for effecting a heat exchange function and for receiving return fluid resulting from said output fluid providing its heat exchange function, thermally operated means carried by said housing means adapted to control the amount of flow of said output fluid from said source that is to be utilized for said heat exchange function in relation to the temperature of said thermally operated means, and means adapted to be controlled by a sensing means for directing one of said output fluid and said return fluid to said thermally operated means to cause the same to be adapted to change the amount of flow of said output fluid when the temperature effect of said heat exchange function deviates from a predetermined temperature a certain amount, said means adapted to be controlled by said sensing means comprising a fluid operated valve means adapted to direct said output fluid to said thermally operated means when said sensing means moves said valve means to one of its operating positions.
Claim 29
Dependent Claim
69 words
A control until as set forth in claim 21 wherein said means adapted to be controlled by said sensing means comprises an aspirator adapted to draw said return fluid to said thermally operated device when said aspirator has fluid directed therethrough, said valve means being adapted to cause output fluid to be directed through said aspirator when said sensing means moves said valve means to another operating position thereof.
Claim 30
Dependent Claim
165 words
A control unit for a heat exchange system or the like comprising a housing means having means adapted to receive a source of cooling fluid and a source of heating fluid, thermally operated means carried by said housing means and adapted to control the amount of flow of heat exchange output fluid from a source thereof that is to be utilized for a heat exchange function in a zone in relation to the temperature of said thermally operated means, and means adapted to be controlled by a zone temperature sensing means for directing one of said cooling fluid and said heating fluid to said thermally operated means to cause the same to be adapted to change the amount of flow of said output fluid when the temperature effect in said zone deviates from a predetermined temperature a certain amount whereby a wide temperature swing can be provided for said thermally responsive device with only a narrow temperature swing of said temperature effect in said zone.
Claim 31
Dependent Claim
165 words
A control unit for a heat exchange system or the like comprising a housing means having means adapted to receive a source of cooling fluid and a source of heating fluid, thermally operated means carried by said housing means and adapted to control the amount of flow of heat exchange output fluid from a source thereof that is to be utilized for a heat exchange function in a zone in relation to the temperature of said thermally operated means, and means adapted to be controlled by a zone temperature sensing means for directing one of said cooling fluid and said heating fluid to said thermally operated means to cause the same to be adapted to change the amount of flow of said output fluid when the temperature effect in said zone deviates from a predetermined temperature a certain amount whereby a wide temperature swing can be provided for said thermally responsive device with only a narrow temperature swing of said temperature effect in said zone.
Claim 32
Dependent Claim
23 words
A control unit as set forth in claim 23 wherein said thermally operated means comprises a wax charged piston and cylinder thermal element.
Claim 33
Dependent Claim
30 words
A control unit as set forth in claim 23 wherein said thermally operated means comprises a plurality of wax charged piston and cylinder thermal elements disposed in abutting aligned relation.
Claim 34
Independent Claim
181 words
A method for operating a heat exchange system for a zone comprising the steps oF providing a source of heat exchange output fluid for effecting a heat exchange function in said zone, providing a source of return fluid resulting from said output fluid providing its heat exchange function in said zone, controlling the amount of flow of said output fluid from said source that is to be utilized for said heat exchange function in said zone by a thermally operated means in relation to the temperature of said thermally operated means, sensing the temperature effect of said heat exchange function in said zone with a sensing means in relation to a predetermined temperature that said heat exchange system is to provide in said zone, and directing one of said output fluid and said return fluid to said thermally operated means by means under the control under the control of said sensing means to cause the same to change the amount of flow of said output fluid when said temperature effect in said zone deviates from said predetermined temperature a certain amount.
Claim 35
Independent Claim
181 words
A method for operating a heat exchange system for a zone comprising the steps oF providing a source of heat exchange output fluid for effecting a heat exchange function in said zone, providing a source of return fluid resulting from said output fluid providing its heat exchange function in said zone, controlling the amount of flow of said output fluid from said source that is to be utilized for said heat exchange function in said zone by a thermally operated means in relation to the temperature of said thermally operated means, sensing the temperature effect of said heat exchange function in said zone with a sensing means in relation to a predetermined temperature that said heat exchange system is to provide in said zone, and directing one of said output fluid and said return fluid to said thermally operated means by means under the control under the control of said sensing means to cause the same to change the amount of flow of said output fluid when said temperature effect in said zone deviates from said predetermined temperature a certain amount.
Claim 36
Dependent Claim
16 words
A method as set forth in claim 26 wherein said output fluid is a cooling fluid.
Claim 37
Dependent Claim
16 words
A method as set forth in claim 26 wherein said output fluid is a heating fluid.
Claim 38
Dependent Claim
27 words
A method as set forth in claim 26 and including the step of forming said thermally operated means from a wax charged piston and cylinder thermal element.
Claim 39
Dependent Claim
34 words
A method as set forth in claim 26 and including the step of forming said thermally operated means from a plurality of wax charged piston and cylinder thermal elements disposed in abutting aligned relation.
Claim 40
Dependent Claim
80 words
A method as set forth in claim 26 and including the step of providing a duct means for directng said output fluid from said source to said zone to have said heat exchange function take place in said zone, said duct means having damper means for controlling the flow of fluid therethrough, and operatively interconnecting said thermally operated means to control the position of said damper means and, thus, the amount of flow of output fluid through said duct means.
Claim 41
Dependent Claim
49 words
A method as set forth in claim 31 and including the steps of forming said thermally operated means from an extendible and retractible member, and operatively interconnecting a pulley means to said extendible and retractible member and to said damper means to operatively interconnect said thermally operated means thereto.
Claim 42
Independent Claim
314 words
A method for operating a heat exchange system comprising the steps of providing a source of heat exchange output fluid for effecting a heat exchange function, providing a source of return fluid resulting from said output fluid providing its heat exchange function, controlling the amount of flow of said output fluid from said source that is to be utilized for said heat exchange function by a thermally operated means in relation to the temperature of said thermally operated means, sensing the temperature effect of said heat exchange function with a sensing means in relation to a predetermined temperature that said heat exchange system is to provide, directing one of said output fluid and said return fluid to said thermally operated means by means under the control of said sensing means to cause the same to change the amount of flow of said output fluid when said temperature effect deviates from said predetermined temperature a certain amount, providing a duct means for directing said output fluid from said source to a desired area to have said heat exchange function take place, said duct means having damper means for controlling the flow of fluid therethrough, operatively interconnecting said thermally operated means to said damper mens to control the position of said damper means and, thus, the amount of flow of output fluid through said duct means, forming said thermally operated means from an extendible and retractible member, operatively interconnecting a pulley means to said extendible and retractible member and to said damper means to operatively interconnect said thermally operated means thereto, interconnecting spring means to said pulley means to tend to pull sAid pulley means in one direction, and abutting said extendible and retractible member against said slide member to move said slide member in a direction opposite to said one direction in opposition to the force of said spring means when said member is extended.
Claim 43
Independent Claim
314 words
A method for operating a heat exchange system comprising the steps of providing a source of heat exchange output fluid for effecting a heat exchange function, providing a source of return fluid resulting from said output fluid providing its heat exchange function, controlling the amount of flow of said output fluid from said source that is to be utilized for said heat exchange function by a thermally operated means in relation to the temperature of said thermally operated means, sensing the temperature effect of said heat exchange function with a sensing means in relation to a predetermined temperature that said heat exchange system is to provide, directing one of said output fluid and said return fluid to said thermally operated means by means under the control of said sensing means to cause the same to change the amount of flow of said output fluid when said temperature effect deviates from said predetermined temperature a certain amount, providing a duct means for directing said output fluid from said source to a desired area to have said heat exchange function take place, said duct means having damper means for controlling the flow of fluid therethrough, operatively interconnecting said thermally operated means to said damper mens to control the position of said damper means and, thus, the amount of flow of output fluid through said duct means, forming said thermally operated means from an extendible and retractible member, operatively interconnecting a pulley means to said extendible and retractible member and to said damper means to operatively interconnect said thermally operated means thereto, interconnecting spring means to said pulley means to tend to pull sAid pulley means in one direction, and abutting said extendible and retractible member against said slide member to move said slide member in a direction opposite to said one direction in opposition to the force of said spring means when said member is extended.
Claim 44
Independent Claim
196 words
A method for operating a heat exchange system comprising the steps of providing a source of heat exchange output fluid for effecting a heat exchange function, providing a soruce of return fluid resulting from said output fluid providing its heat exchange function, controlling the amount of flow of said output fluid from said source that is to be utilized for said heat exchange function by a thermally operated means in relation to the temperature of said thermally operated means, sensing the temperature effect of said heat exchange function with a sensing means in relation to a predetermined temperature that said heat exchange system is to provide, and directing one of said output fluid and said return fluid to said thermally operated means by means under the control of said sensing means to cause the same to change the amount of flow of said output fluid when said temperature effect deviates from said predetermined temperature a certain amount, and forming said means controlled by said sensing means from a fluid operated valve means that directs said output fluid to said thermally operated means when said sensing means moves said valve means to one of its operating positions.
Claim 45
Independent Claim
196 words
A method for operating a heat exchange system comprising the steps of providing a source of heat exchange output fluid for effecting a heat exchange function, providing a soruce of return fluid resulting from said output fluid providing its heat exchange function, controlling the amount of flow of said output fluid from said source that is to be utilized for said heat exchange function by a thermally operated means in relation to the temperature of said thermally operated means, sensing the temperature effect of said heat exchange function with a sensing means in relation to a predetermined temperature that said heat exchange system is to provide, and directing one of said output fluid and said return fluid to said thermally operated means by means under the control of said sensing means to cause the same to change the amount of flow of said output fluid when said temperature effect deviates from said predetermined temperature a certain amount, and forming said means controlled by said sensing means from a fluid operated valve means that directs said output fluid to said thermally operated means when said sensing means moves said valve means to one of its operating positions.
Claim 46
Dependent Claim
67 words
A method as set forth in claim 34 and including the steps of forming said means controlled by said sensing means from an aspirator that draws said return fluid to said thermally operated device when said aspirator has fluid directed therethrough, and causing said valve means to direct said output fluid through said aspirator when said sensing means moves said valve means to another operating position thereof.
Claim 47
Independent Claim
184 words
A method for operating a heat exchanger system for a zone comprising the steps of providing a source of heat exchange output fluid for effectng a heat exchange function in said zone, controlling the amount of flow of said output fluid from said source that is to be utilized for said heat exchange function in said zone by thermally operated means in relation to the temperature of said thermally operated means, sensing the temperature effect of said heat exchange function in said zone with a sensing means in relation to a predetermined temperature that said heat exchange system is to provide in said zone, and directing one of a cooling fluid and a heating fluid to said thermally operated means by means under the control of said sensing means to cause the same to change the amount of flow of said output fluid when said temperature effect in said zone deviates from said predetermined temperature a certain amount whereby a wide temperature swing can be provided for said thermally responsive device with only a narrow temperature swing of said temperature effect in said zone.
Claim 48
Independent Claim
184 words
A method for operating a heat exchanger system for a zone comprising the steps of providing a source of heat exchange output fluid for effectng a heat exchange function in said zone, controlling the amount of flow of said output fluid from said source that is to be utilized for said heat exchange function in said zone by thermally operated means in relation to the temperature of said thermally operated means, sensing the temperature effect of said heat exchange function in said zone with a sensing means in relation to a predetermined temperature that said heat exchange system is to provide in said zone, and directing one of a cooling fluid and a heating fluid to said thermally operated means by means under the control of said sensing means to cause the same to change the amount of flow of said output fluid when said temperature effect in said zone deviates from said predetermined temperature a certain amount whereby a wide temperature swing can be provided for said thermally responsive device with only a narrow temperature swing of said temperature effect in said zone.
Claim 49
Dependent Claim
16 words
A method as set forth in claim 36 wherein said output fluid is a cooling fluid.
Claim 50
Dependent Claim
15 words
A method as set forth in claim 36 wherein said output fluid is heating fluid.
Claim 51
Dependent Claim
27 words
A method as set forth in claim 36 and including the step of forming said thermally operated means from a wax charged piston and cylinder thermal element.
Claim 52
Dependent Claim
34 words
A method as set forth in claim 36 and including the step of forming said thermally operated means from a plurality of wax charged piston and cylinder thermal elements disposed in abutting aligned relation.
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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) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |