Patent US3630175A successfully refreshed from Google Patents.
US3630175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid heater
Assignee: Columbia Gas System Service Corp
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Filing: 1970-02-02
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Granted: 1971-12-28
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Expires: 1990-02-02
Abstract
Abstract A swimming pool heater having an infrared gas burner therein for supplying radiant heat to pool water flowing in a tubular heat exchanger adjacent the burner plate. The heat exchanger is arranged in a heater housing to define therewith a flow path adjacent the tubes for the products of combustion from the burner whereby additional heat by convection is supplied to the tubes from the exhaust gases. The input end of the heat exchanger includes a valve member adapted to maintain a predetermined rate of flow of water through the tubes and to bypass excess water back to the pool.
Inventors
- 👤 Edward A Reid Jr
- 👤 Robert G Venendall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:02
CPC Classifications
F; F28; F28F; F28F9/00; F23; F23D; F23D99/00; F23D99/002; F23D99/004; F24; F24H; F24H1/00; F24H1/10; F24H1/12; F24H1/14; F24H1/145; F24H1/16; F24H1/165; F28D; F28D7/00; F28D7/02; F28D7/024; F28D7/16; F28D7/163; F28D7/1653; F28D7/1661; F23D2206/00; F23D2206/0094
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
174 words
A fluid-heating device in the fluid flow path of a water circulation system comprising, a heat transfer conduit forming a portion of said fluid flow path, a gas burner associated with said conduit and adapted to supply heat to said conduit to heat the water flowing therein upon combustion of fuel in said burner, said burner being positioned centrally of said housing and said conduit providing a close packed heat transfer coil surrounding said burner, a generally airtight housing adapted to contain said conduit and said burner, said housing including an exhaust opening adapted to discharge products of combustion formed by said gas burner, wherein said coil and said housing cooperate to define a flow path in the housing for said products of combustion whereby said products of combustion first flow generally upwardly between said peripheral sidewalls and said coils and then downwardly between said coils and the walls of said housing prior to discharge through said exhaust opening whereby additional heat is provided to said coil by convection from said products of combustion.
Claim 2
Dependent Claim
174 words
A fluid-heating device in the fluid flow path of a water circulation system comprising, a heat transfer conduit forming a portion of said fluid flow path, a gas burner associated with said conduit and adapted to supply heat to said conduit to heat the water flowing therein upon combustion of fuel in said burner, said burner being positioned centrally of said housing and said conduit providing a close packed heat transfer coil surrounding said burner, a generally airtight housing adapted to contain said conduit and said burner, said housing including an exhaust opening adapted to discharge products of combustion formed by said gas burner, wherein said coil and said housing cooperate to define a flow path in the housing for said products of combustion whereby said products of combustion first flow generally upwardly between said peripheral sidewalls and said coils and then downwardly between said coils and the walls of said housing prior to discharge through said exhaust opening whereby additional heat is provided to said coil by convection from said products of combustion.
Claim 3
Dependent Claim
42 words
A device as defined in claim 1 wherein said burner includes peripheral sidewalls adapted to produce radiant heat upon combustion of gases within the burner whereby said close packed heat transfer coil surrounding said burner receives radiant heat from said peripheral sidewalls.
Claim 4
Dependent Claim
82 words
A device as defined in claim 2 wherein said peripheral sidewall comprises, a plurality of burner plates having a plurality of orifices extending therethrough, each of said orifices including a throat portion of relatively small cross section extending from an inlet at one surface of said plate and an expanding outlet portion extending from said throat portion to an opening at an opposite surface of the plate opposite said coil and having cross sections increasing from said throat portion to said opening.
Claim 5
Dependent Claim
114 words
A device as defined in claim 3 including, means for supplying a combustible air-gas mixture to said one surface of said plates for passage through said orifices at a mass flow rate such that the velocity of flow of the mixture through said throat portion of each orifice is greater than the velocity of flame propagation in the mixture and establishes a substantially laminar flow in said throat portion which projects a jet of said mixture centrally into said outlet portion with separation of said jet from the surface of said outlet portion, whereby to create a zone of turbulent low velocity recirculating flow between said jet and said surface of the outlet portion.
Claim 6
Dependent Claim
44 words
A device as defined in claim 1 wherein said housing is thermally insulated along the exterior thereof whereby a substantial portion of the heat from said products of combustion is transferred to said coils by convection and heat loss through said housing is avoided.
Claim 7
Dependent Claim
23 words
A device as defined in claim 1 wherein said housing includes a second opening through which condensate forming on said coils is discharged.
Claim 8
Dependent Claim
174 words
A fluid-heating device in the fluid flow path of a water circulation system comprising, a heat transfer conduit forming a portion of said fluid flow path, a gas burner associated with said conduit and adapted to supply heat to said conduit to heat the water flowing therein upon combustion of fuel in said burner, a generally airtight housing adapted to contain said conduit and said burner, said housing including an exhaust opening adapted to discharge products of combustion formed by said gas burner, said housing and said conduit cooperating to define a flow path in said housing for said products of combustion whereby additional heat is provided to said conduit by convection from said products of combustion, said burner being positioned adjacent the upper portion of said housing and including, a base member adapted to produce radiant heat upon combustion of gases within the burner, and said conduit including a plurality of heat transfer ducts operably interconnected for fluid communication therebetween, said ducts being located below said base member to receive radiant heat therefrom.
Claim 9
Dependent Claim
174 words
A fluid-heating device in the fluid flow path of a water circulation system comprising, a heat transfer conduit forming a portion of said fluid flow path, a gas burner associated with said conduit and adapted to supply heat to said conduit to heat the water flowing therein upon combustion of fuel in said burner, a generally airtight housing adapted to contain said conduit and said burner, said housing including an exhaust opening adapted to discharge products of combustion formed by said gas burner, said housing and said conduit cooperating to define a flow path in said housing for said products of combustion whereby additional heat is provided to said conduit by convection from said products of combustion, said burner being positioned adjacent the upper portion of said housing and including, a base member adapted to produce radiant heat upon combustion of gases within the burner, and said conduit including a plurality of heat transfer ducts operably interconnected for fluid communication therebetween, said ducts being located below said base member to receive radiant heat therefrom.
Claim 10
Dependent Claim
37 words
A device as defined in claim 7 wherein said heat transfer ducts comprise spaced finned members whereby the products of combustion from said burner flow between and around said ducts prior to discharge through said exhaust opening.
Claim 11
Dependent Claim
44 words
A device as defined in claim 8 including, a plurality of deflection plates mounted in said housing below said heat transfer ducts to deflect combustion products flowing between said ducts to effect substantially uniform convective heating of said ducts by said products of combustion.
Claim 12
Dependent Claim
80 words
A device as defined in claim 8 wherein said base member comprises, a burner plate having a plurality of orifices extending therethrough, each of said orifices including a throat portion of relatively small cross section extending from an inlet at one surface of said plate and an expanding outlet portion extending from said throat portion to an opening at an opposite surface of the plate opposite said coil and having cross sections increasing from said throat portion to said opening.
Claim 13
Dependent Claim
114 words
A device as defined in claim 10 including, means for supplying a combustible air-gas mixture to said one surface of said plates for passage through said orifices at a mass flow rate such that the velocity of flow of the mixture through said throat portion of each orifice is greater than the velocity of flame propagation in the mixture and establishes a substantially laminar flow in said throat portion which projects a jet of said mixture centrally into said outlet portion with separation of said jet from the surface of said outlet portion, whereby to create a zone of turbulent low velocity recirculating flow between said jet and said surface of the outlet portion.
Claim 14
Dependent Claim
146 words
A fluid-heating device comprising, a substantially airtight housing, gas burner means in said housing for producing radiant heat therein positioned adjacent the upper portion of said housing, said gas burner means including a base member adapted to produce radiant heat upon combustion of gases within the burner, means defining a flow path for said fluid through said device adjacent said burner means whereby fluid is heated by said radiant heat, said means defining a fluid flow path including a plurality of heat transfer ducts operably interconnected for fluid communication therebetween, said ducts being located below said base member to receive radiant heat therefrom, said housing having an exhaust opening therein for the products of combustion formed in said burner and confining said product of combustion prior to discharge through said opening adjacent said flow path defining means to supply additional heat to said fluid by convection.
Claim 15
Dependent Claim
146 words
A fluid-heating device comprising, a substantially airtight housing, gas burner means in said housing for producing radiant heat therein positioned adjacent the upper portion of said housing, said gas burner means including a base member adapted to produce radiant heat upon combustion of gases within the burner, means defining a flow path for said fluid through said device adjacent said burner means whereby fluid is heated by said radiant heat, said means defining a fluid flow path including a plurality of heat transfer ducts operably interconnected for fluid communication therebetween, said ducts being located below said base member to receive radiant heat therefrom, said housing having an exhaust opening therein for the products of combustion formed in said burner and confining said product of combustion prior to discharge through said opening adjacent said flow path defining means to supply additional heat to said fluid by convection.
Claim 16
Dependent Claim
154 words
A radiant fluid-heating device comprising, an annular insulated housing defining a generally cylindrical heating chamber, burner means mounted within the central portion of said chamber having an apertured peripheral sidewall adapted to produce radiant heat in said chamber upon combustion of gases adjacent said apertures, an annular close-packed coil within said housing surrounding said burner and receiving radiant heat therefrom said coil defining a first annular exhaust passage between said periPheral sidewall and said coil and a second annular exhaust passage between said coil and the walls of said housing, said exhaust passages being in airflow communication adjacent the top of said housing said heating chamber having an exhaust opening therein, whereby products of combustion from said burner flow upwardly in said first passage to said second passage wherein said gases flow downwardly adjacent said coils to said exhaust opening and supply additional heat by convection to said coils and the water flowing therein.
Claim 17
Dependent Claim
154 words
A radiant fluid-heating device comprising, an annular insulated housing defining a generally cylindrical heating chamber, burner means mounted within the central portion of said chamber having an apertured peripheral sidewall adapted to produce radiant heat in said chamber upon combustion of gases adjacent said apertures, an annular close-packed coil within said housing surrounding said burner and receiving radiant heat therefrom said coil defining a first annular exhaust passage between said periPheral sidewall and said coil and a second annular exhaust passage between said coil and the walls of said housing, said exhaust passages being in airflow communication adjacent the top of said housing said heating chamber having an exhaust opening therein, whereby products of combustion from said burner flow upwardly in said first passage to said second passage wherein said gases flow downwardly adjacent said coils to said exhaust opening and supply additional heat by convection to said coils and the water flowing therein.
Claim 18
Dependent Claim
41 words
A device as defined in claim 13 for heating water for a swimming pool including, valve means operatively connected to said coils for supplying a predetermined volume flow of water to said coil and bypassing excess water back to the pool.
Claim 19
Dependent Claim
157 words
A radiant fluid-heating device comprising, an insulated housing defining a heating chamber therein, burner means mounted within said chamber adjacent the top of said housing and having an apertured substantially planar base portion adapted to produce radiant heat in said chamber upon combustion of gases adjacent said apertures, a plurality of generally elongated tubular heat transfer ducts mounted within said housing below said burner and receiving radiant heat therefrom, said heat transfer ducts being connected in liquid communication with each other to provide a flow path for said water and defining an exhaust chamber in the base of said housing, said exhaust chamber having an exhaust opening therein adapted to provide communication between said exhaust chamber and the atmosphere, whereby products of combustion from said burner flow downwardly through and around said heat transfer ducts to said exhaust chamber and said exhaust opening to supply additional heat by convection to said coils and the water flowing therein.
Claim 20
Dependent Claim
157 words
A radiant fluid-heating device comprising, an insulated housing defining a heating chamber therein, burner means mounted within said chamber adjacent the top of said housing and having an apertured substantially planar base portion adapted to produce radiant heat in said chamber upon combustion of gases adjacent said apertures, a plurality of generally elongated tubular heat transfer ducts mounted within said housing below said burner and receiving radiant heat therefrom, said heat transfer ducts being connected in liquid communication with each other to provide a flow path for said water and defining an exhaust chamber in the base of said housing, said exhaust chamber having an exhaust opening therein adapted to provide communication between said exhaust chamber and the atmosphere, whereby products of combustion from said burner flow downwardly through and around said heat transfer ducts to said exhaust chamber and said exhaust opening to supply additional heat by convection to said coils and the water flowing therein.
Claim 21
Dependent Claim
41 words
A device as defined in claim 15 for heating water for a swimming pool including, valve means operatively connected to said coil for supplying a predetermined volume flow of water to said coil and bypassing excess water back to the pool.
Claim 22
Dependent Claim
65 words
A device as defined in claim 15 including, a plurality of deflection plates mounted in said housing below said heat transfer ducts to deflect said products of combustion about said heat transfer ducts prior to discharge from said housing to effect substantially uniform convection heating of said ducts by said products of combustion and to reflect radiation passing between said ducts upwardly towards said ducts.
Claim 23
Independent Claim
267 words
A system for heating swimming pool water wherein the water is circulated from and to the pool which includes a radiant heating device for the water which comprises, a substantially airtight housing, gas burner means in said housing for producing radiant heat therein, means defining a flow path for said fluid through said device adjacent said burner means whereby said fluid is heated by said radiant heat, said housing having an exhaust opening therein for products of combustion formed in said burner and confining said products of combustion prior to discharge through said opening adjacent said flow path defining means to supply additional heat to said fluid by convection, and means forming a bypass to divert water from flowing along said flow path which includes a slide valve member having a closed position in which all of the water flows along said flow path and which is movable from said closed position to permit a controlled portion of the water to flow through said bypass, said valve element being annular and concentrically positioned with respect to the stream of water entering said system and being slidable axially from said closed position thereby to open annular passageway to said bypass, and a coil spring surrounding said valve element and urging said valve element to said closed position, said spring having the characteristic that it holds said valve element in said closed position when the rate of waterflow along said heating path is below a predetermined level and it permits the water pressure to move said valve elEment from said closed position upon an elevation in the said flow.
Claim 24
Independent Claim
267 words
A system for heating swimming pool water wherein the water is circulated from and to the pool which includes a radiant heating device for the water which comprises, a substantially airtight housing, gas burner means in said housing for producing radiant heat therein, means defining a flow path for said fluid through said device adjacent said burner means whereby said fluid is heated by said radiant heat, said housing having an exhaust opening therein for products of combustion formed in said burner and confining said products of combustion prior to discharge through said opening adjacent said flow path defining means to supply additional heat to said fluid by convection, and means forming a bypass to divert water from flowing along said flow path which includes a slide valve member having a closed position in which all of the water flows along said flow path and which is movable from said closed position to permit a controlled portion of the water to flow through said bypass, said valve element being annular and concentrically positioned with respect to the stream of water entering said system and being slidable axially from said closed position thereby to open annular passageway to said bypass, and a coil spring surrounding said valve element and urging said valve element to said closed position, said spring having the characteristic that it holds said valve element in said closed position when the rate of waterflow along said heating path is below a predetermined level and it permits the water pressure to move said valve elEment from said closed position upon an elevation in the said flow.
Claim 25
Dependent Claim
30 words
Apparatus as described in claim 18 wherein said valve element has a waterflow passageway thereto of lesser diameter than the diameter of the stream of water flowing into said device.
Claim 26
Dependent Claim
41 words
A system as defined in claim 1 for heating water for a swimming pool including, valve means operatively connected to said coil for supplying a predetermined volume flow of water to said coil and bypassing excess water back to the pool.
Claim 27
Dependent Claim
170 words
A system as described in claim 20 including a bypass to divert water from flowing along said flow path and wherein said valve means comprises a slide valve member having a closed position in which all of the water flows along said flow path and which is movable from said closed position to permit a controlled portion of the water to flow through said bypass, said valve element being annular and concentrically positioned with respect to the stream of water entering said system and being slidable axially from said closed position thereby to open an annular passageway to said bypass, and a coil spring surrounding said valve element and urging said valve element to said closed position, said spring having the characteristic that it holds said valve element in said closed position when the rate of water flow along said heating path is below a predetermined level and it permits the water pressure to move said valve element from said closed position upon an elevation in the said flow rate.
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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |