Patent US3825784A successfully refreshed from Google Patents.
Patent US3567905A successfully refreshed from Google Patents.
US3567905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot water space heater
Assignee: Individual
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Filing: 1967-09-21
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Granted: 1971-03-02
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Expires: 1987-09-21
Abstract
Abstract A hot water forced air circulation heater is disclosed and is particularly adapted for use with one or more electric immersion heating elements. The space heater includes a casing having an upper heat exhanger section and a lower blower section. A convector structure is mounted within the heat exchange section and arranged for the output of the blower to flow therearound. The convector is of serpentine or double serpentine construction and its ends are coupled to a reservoir for water or other heat exchange medium heated by one or more of the heating elements mounted in the reservoir. The convector-conduit and convecting fins associated therewith are sized such that heat exchange water is returned to the reservoir with a substantial quantity of sensible heat to minimize thermal cycling of the heating element or elements and to increase the effective heat transfer area of the convector. The blower output is blown longitudinally of the convector or upwardly through the heat exchange section to maximize contact between the air and the convector. In one arrangement the circulating water reservoir is mounted near the base of the convector on a projecting portion of the casing and is connected through a riser conduit to the inlet at the top of the convector. The upper portion of the convector can be arranged to overhang the reservoir to facilitate connection of the convector to the riser conduit and to give direction to hot air issuing from the space heater.
Inventors
- 👤 Emanuel Ferraro
- 👤 Oliver Ferraro
- 👤 James Ferraro
- 👤 Paul Ferraro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:02
CPC Classifications
F; F24; F24H; F24H3/00; F24H3/02; F24H3/06; F24H3/08; F24H3/081
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
230 words
A hot water heater including a casing having a base section and a heat exchange section, a heat-exchange water reservoir mounted on said casing, heat-producing means mounted in heat transfer relation to said reservoir, a convector mounted in said heat exchange section and substantially coextending therewith for conveying heat-exchange water generally downwardly thereof, an upper inlet port of said convector coupled to a hot water outlet of said reservoir, a lower outlet port of said convector coupled to a return water inlet of said reservoir, said casing having a warm air outlet in the upper portion thereof communicating with said heat exchange section and a cold air return in the lower portion thereof communicating with said base section, and a blower mounted in said casing base section having its inlet communicating with said return opening and having its outlet communicating with said heat exchange section so that blower output air flows upwardly through said heat exchange section and countercurrently to the general flow direction of said heatexchange water through said heat exchange section, said reservoir being mounted on said casing adjacent the lower portion of said convector and having its hot water outlet coupled through a standpipe to the upper inlet port of said convector, said standpipe extending upwardly from the upper side of said reservoir, and said convector coextending substantially with the combined length of said reservoir and standpipe.
Claim 2
Dependent Claim
230 words
A hot water heater including a casing having a base section and a heat exchange section, a heat-exchange water reservoir mounted on said casing, heat-producing means mounted in heat transfer relation to said reservoir, a convector mounted in said heat exchange section and substantially coextending therewith for conveying heat-exchange water generally downwardly thereof, an upper inlet port of said convector coupled to a hot water outlet of said reservoir, a lower outlet port of said convector coupled to a return water inlet of said reservoir, said casing having a warm air outlet in the upper portion thereof communicating with said heat exchange section and a cold air return in the lower portion thereof communicating with said base section, and a blower mounted in said casing base section having its inlet communicating with said return opening and having its outlet communicating with said heat exchange section so that blower output air flows upwardly through said heat exchange section and countercurrently to the general flow direction of said heatexchange water through said heat exchange section, said reservoir being mounted on said casing adjacent the lower portion of said convector and having its hot water outlet coupled through a standpipe to the upper inlet port of said convector, said standpipe extending upwardly from the upper side of said reservoir, and said convector coextending substantially with the combined length of said reservoir and standpipe.
Claim 3
Dependent Claim
41 words
The combination according to claim 1 wherein the size of said convector conduit and a number of cooling fins associated therewith are selected such that said water is returned to said reservoir with a substantial amount of sensible heat remaining therein.
Claim 4
Dependent Claim
35 words
The combination according to claim 2 wherein the volume of water containable in said reservoir is between 40 and 50 percent of the total amount of water containable in said convector and in said reservoir.
Claim 5
Dependent Claim
13 words
The combination according to claim 1 wherein said convector includes a serpentine conduit.
Claim 6
Dependent Claim
14 words
The combination according to claim 1 wherein said convector includes a double serpentine conduit.
Claim 7
Dependent Claim
208 words
A hot water heater including a casing having a base section and a heat exchange section, a heat-exchange water reservoir mounted on said casing, heat-producing means mounted in heat transfer relation to said reservoir, a convector mounted in said heat exchange section and substantially coextending therewith for conveying heat-exchange water generally downwardly thereof, an upper inlet port of saiD convector coupled to a hot water outlet of said reservoir, a lower outlet port of said convector coupled to a return water inlet of said reservoir, said casing having a warm air outlet in the upper portion thereof communicating with said heat exchange section and a cold air return in the lower portion thereof communicating with said base section, and a blower mounted in said casing base section having its inlet communicating with said return opening and having its outlet communicating with said heat exchange section so that blower output air flows upwardly through said heat exchange section and countercurrently to the general flow direction of said heat-exchange water, said base section projecting outwardly of said heat exchange section, and said reservoir being mounted on the projecting portion of said base section, the outlet of said reservoir being coupled to the inlet of said convector through an external standpipe.
Claim 8
Dependent Claim
208 words
A hot water heater including a casing having a base section and a heat exchange section, a heat-exchange water reservoir mounted on said casing, heat-producing means mounted in heat transfer relation to said reservoir, a convector mounted in said heat exchange section and substantially coextending therewith for conveying heat-exchange water generally downwardly thereof, an upper inlet port of saiD convector coupled to a hot water outlet of said reservoir, a lower outlet port of said convector coupled to a return water inlet of said reservoir, said casing having a warm air outlet in the upper portion thereof communicating with said heat exchange section and a cold air return in the lower portion thereof communicating with said base section, and a blower mounted in said casing base section having its inlet communicating with said return opening and having its outlet communicating with said heat exchange section so that blower output air flows upwardly through said heat exchange section and countercurrently to the general flow direction of said heat-exchange water, said base section projecting outwardly of said heat exchange section, and said reservoir being mounted on the projecting portion of said base section, the outlet of said reservoir being coupled to the inlet of said convector through an external standpipe.
Claim 9
Dependent Claim
40 words
The combination according to claim 6 wherein an upper air outlet portion of said heat exchange section overhangs said base extension and said reservoir, and the junction between said standpipe and said convector inlet is mounted within said overhanging portion.
Claim 10
Dependent Claim
229 words
A hot water heater including a casing having a base section and a heat exchange section, a heat-exchange water reservoir mounted on said casing, heat-producing means mounted in heat transfer relation to said reservoir, a convector mounted in said heat exchange section and substantially coextending therewith for conveying heat-exchange water generally downwardly thereof, an upper inlet port of said convector coupled to a hot water outlet of said reservoir, a lower outlet port of said convector coupled to a return water inlet of said reservoir, said casing having a warm air outlet in the upper portion thereof communicating with said heat exchange section and a cold air return in the lower portion thereof communicating with said base section, and a blower mounted in said casing base section having its inlet communicating with said return opening and having its outlet communicating with said heat exchange section so that blower output air flows upwardly through said heat exchange section and countercurrently to the general flow direction of said heat-exchange water, said reservoir being mounted on said casing adjacent the lower output portion of said convector and being coupled through a standpipe to the upper inlet portions of said convector, the upper end of said standpipe projecting above its junction with said convector inlet and through the adjacent portion of said casing and terminating in an air vent for said liquid system.
Claim 11
Dependent Claim
229 words
A hot water heater including a casing having a base section and a heat exchange section, a heat-exchange water reservoir mounted on said casing, heat-producing means mounted in heat transfer relation to said reservoir, a convector mounted in said heat exchange section and substantially coextending therewith for conveying heat-exchange water generally downwardly thereof, an upper inlet port of said convector coupled to a hot water outlet of said reservoir, a lower outlet port of said convector coupled to a return water inlet of said reservoir, said casing having a warm air outlet in the upper portion thereof communicating with said heat exchange section and a cold air return in the lower portion thereof communicating with said base section, and a blower mounted in said casing base section having its inlet communicating with said return opening and having its outlet communicating with said heat exchange section so that blower output air flows upwardly through said heat exchange section and countercurrently to the general flow direction of said heat-exchange water, said reservoir being mounted on said casing adjacent the lower output portion of said convector and being coupled through a standpipe to the upper inlet portions of said convector, the upper end of said standpipe projecting above its junction with said convector inlet and through the adjacent portion of said casing and terminating in an air vent for said liquid system.
Claim 12
Dependent Claim
60 words
The combination according to claim 8 wherein a capped fill pipe is mounted in said casing with its capped end projecting through the upper end thereof and the lower end communicating with said standpipe at a point below the junction of said standpipe and said convector inlet so as not to interfere with the escape of air from said convector.
Claim 13
Dependent Claim
35 words
The combination according to claim 9 wherein a portion of said heat exchange section overhangs said base section, said fill pipe and its junction with said standpipe are enclosed within said overhanging heat exchange portion.
Claim 14
Dependent Claim
224 words
A hot water heater including a casing having a base section and a heat exchange section, a heat-exchange water reservoir mounted on said casing, heat-producing means mounted in heat transfer relation to said reservoir, a convector mounted in said heat exchange section and substantially coextending therewith for conveying heat-exchange water generally downwardly thereof, said reservoir being mounted on said casing adjacent the lower output portion of said convector and being coupled through a standpipe to the upper inlet portion of said convector, an upper inlet port of said convector coupled to a hot water outlet of said reservoir, a lower outlet port of said convector coupled to a return water inlet of said reservoir, said casing having a warm air outlet in the upper portion thereof communicatiNg with said heat exchange section and a cold air return in the lower portion thereof communicating with said base section, said reservoir being mounted on said casing adjacent the lower portion of said convector and having its hot water outlet coupled through a standpipe to the upper inlet port of said convector, said standpipe extending upwardly from the upper side of said reservoir, and said convector coextending substantially with the combined length of said reservoir and standpipe, the volume of water containable in said reservoir being about equal to the volume of water containable in said convector.
Claim 15
Dependent Claim
224 words
A hot water heater including a casing having a base section and a heat exchange section, a heat-exchange water reservoir mounted on said casing, heat-producing means mounted in heat transfer relation to said reservoir, a convector mounted in said heat exchange section and substantially coextending therewith for conveying heat-exchange water generally downwardly thereof, said reservoir being mounted on said casing adjacent the lower output portion of said convector and being coupled through a standpipe to the upper inlet portion of said convector, an upper inlet port of said convector coupled to a hot water outlet of said reservoir, a lower outlet port of said convector coupled to a return water inlet of said reservoir, said casing having a warm air outlet in the upper portion thereof communicatiNg with said heat exchange section and a cold air return in the lower portion thereof communicating with said base section, said reservoir being mounted on said casing adjacent the lower portion of said convector and having its hot water outlet coupled through a standpipe to the upper inlet port of said convector, said standpipe extending upwardly from the upper side of said reservoir, and said convector coextending substantially with the combined length of said reservoir and standpipe, the volume of water containable in said reservoir being about equal to the volume of water containable in said convector.
Claim 16
Dependent Claim
138 words
A hot water heater including a casing having a base section and a heat exchange section, a heat-exchange water reservoir mounted on said casing, heat-producing means mounted in heat transfer relation to said reservoir, a convector mounted in said heat exchange section and substantially coextending therewith for conveying heat-exchange water generally downwardly thereof, an upper inlet port of said convector coupled to a hot water outlet of said reservoir, a lower outlet port of said convector coupled to a return water inlet of said reservoir, said casing having a warm air outlet in the upper portion thereof communicating with said heat exchange section and a cold air return in the lower portion thereof communicating with said base section, the volume of water containable in said reservoir is about equal to the volume of water containable in said convector.
Claim 17
Dependent Claim
138 words
A hot water heater including a casing having a base section and a heat exchange section, a heat-exchange water reservoir mounted on said casing, heat-producing means mounted in heat transfer relation to said reservoir, a convector mounted in said heat exchange section and substantially coextending therewith for conveying heat-exchange water generally downwardly thereof, an upper inlet port of said convector coupled to a hot water outlet of said reservoir, a lower outlet port of said convector coupled to a return water inlet of said reservoir, said casing having a warm air outlet in the upper portion thereof communicating with said heat exchange section and a cold air return in the lower portion thereof communicating with said base section, the volume of water containable in said reservoir is about equal to the volume of water containable in said convector.
Claim 18
Dependent Claim
62 words
The combination according to claim 9 wherein a blower is mounted in said casing base section and has its inlet communicating with said return opening and its outlet communicating with said heat exchange section so that blower output air flows upwardly through said heat exchange section and countercurrently to the general flow direction of said heat-exchange water through said heat exchange section.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |