US3620450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically heated central hot water heating system
Assignee: Individual
•
Filing: 1969-10-15
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Granted: 1971-11-16
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Expires: 1989-10-15
Abstract
Abstract An electrically heated central hot water system includes at least two separate interconnected vessels providing a series arranged heated storage water column. The heating means for the water is located within only one vessel with the interconnection of the vessels being arranged for withdrawing water from the lower zone of the unheated vessel and charging it into the upper zone of the other vessel where the heating means are located. In this manner, the water in both vessels is heated to a desired level. The heated water is used to heat room convectors directly or to heat another source of water which circulates through the room convectors. In providing heat for the convectors the heated water from the unheated vessel is returned to the heated vessel so that its stored heat may be utilized.
Inventors
- 👤 Paul Leuenberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:50
CPC Classifications
F; F24; F24D; F24D11/00; F24D11/002; F24D3/00; F24D3/08
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
285 words
An electrically heated central hot water heating system for supplying heated water from a central water heating device to convectors for heating purposes wherein the improvement comprises said central water heating device comprising at least a first closed vessel, a heating device disposed within the upper zone of said vessel for heating water contained therein, conduit means communicating between the lower zone of said vessel and the upper zone of said vessel, a heat-measuring device located within the upper zone of said vessel for measuring the temperature of the water adjacent said heating device, a circulating pump disposed in said conduit means and actuated by said heat-measuring device for supplying water to be heated from the lower zone of said vessel to the upper zone of said vessel, said central water heating device comprising said first closed vessel and a second closed vessel, each of said first and second vessels having an upper zone and a lower zone, said heating device disposed within the upper zone of said first vessel for heating water contained therein, said conduit means communicating between the lower zone of said second vessel and the upper zone of said first vessel and between the lower zone of said first vessel and the upper zone of said second vessel, said circulating pump being positioned in said conduit means between the lower zone of said second vessel and the upper zone of said first vessel for supplying water to be heated from the lower zone of said second vessel to the upper zone of said first vessel, and said second vessel arranged to receive heated water from said first vessel for forming in series with said first vessel a heat storage water column.
Claim 2
Dependent Claim
285 words
An electrically heated central hot water heating system for supplying heated water from a central water heating device to convectors for heating purposes wherein the improvement comprises said central water heating device comprising at least a first closed vessel, a heating device disposed within the upper zone of said vessel for heating water contained therein, conduit means communicating between the lower zone of said vessel and the upper zone of said vessel, a heat-measuring device located within the upper zone of said vessel for measuring the temperature of the water adjacent said heating device, a circulating pump disposed in said conduit means and actuated by said heat-measuring device for supplying water to be heated from the lower zone of said vessel to the upper zone of said vessel, said central water heating device comprising said first closed vessel and a second closed vessel, each of said first and second vessels having an upper zone and a lower zone, said heating device disposed within the upper zone of said first vessel for heating water contained therein, said conduit means communicating between the lower zone of said second vessel and the upper zone of said first vessel and between the lower zone of said first vessel and the upper zone of said second vessel, said circulating pump being positioned in said conduit means between the lower zone of said second vessel and the upper zone of said first vessel for supplying water to be heated from the lower zone of said second vessel to the upper zone of said first vessel, and said second vessel arranged to receive heated water from said first vessel for forming in series with said first vessel a heat storage water column.
Claim 3
Dependent Claim
52 words
An electrically heated central hot water heating system, as set forth in claim 1, wherein each of said first and second vessels is arranged to Contain a water level spaced below the upper end thereof for forming an expansion space between the water level and the upper end of each said vessels.
Claim 4
Dependent Claim
28 words
An electrically heated central hot water heating system, as set forth in claim 1, wherein means are arranged for supplying heating water from said vessels for heating convectors.
Claim 5
Dependent Claim
133 words
An electrically heated central hot water heating system, as set forth in claim 3, wherein said means for supplying hot water comprises a pipe line connected to said first vessel and opening therein into the upper zone thereof containing said heating element, a mixing valve assembly positioned within said pipe line exteriorly of said first vessel, a room thermostat in communication with said mixing valve assembly for regulating said mixing valve, a convector connected to said pipe line at a location spaced downstream from said mixing valve, a pressure pump positioned in said pipe line between said mixing valve and said convector, a return line secured at one end to said convector and at its opposite end to said second storage vessel, and a line interconnecting said return line and said mixing valve.
Claim 6
Dependent Claim
190 words
An electrically heated central hot water heating system, as set forth in claim 3, wherein said means for supplying hot water comprises a heat exchange coil located within said first storage vessel below said heating element in the upper zone of said vessel and extending downwardly toward the lower end of said vessel, an outlet line connected to said heat exchange coil and extending outwardly from said first vessel, a mixing valve assembly located within said outlet line spaced outwardly from said first storage vessel, a branch line secured to said outlet line between said first storage vessel and said mixing valve assembly, an expansion vessel disposed within said branch line and a pressure relief valve located in said branch line between said expansion vessel and said outlet line, a convector connected into said outlet line downstream from said mixing valve assembly, a pressure pump disposed within said outlet line between said mixing valve and said convector, a return line secured at one end to said convector and at its opposite end to said heat transfer coil, and a connecting line extending between said return line and said mixing valve.
Claim 7
Dependent Claim
164 words
An electrically heated central hot water heating system, as set forth in claim 1, wherein said conduit means comprises a first conduit member connected to said first storage vessel in the upper zone thereof, a second conduit member connected to said first storage vessel at the lower end thereof, a third conduit member connected to said second storage vessel in the upper zone thereof, and a fourth conduit member connected to the lower end of said second storage vessel, multiway valves interconnecting the ends of said conduit members remote from the connections thereof to said first and second storage vessels, said multiway valves being arranged to direct the flow from said second storage vessel to said first storage vessel through said fourth conduit member and said first conduit member during the heat-charging phase of the system and to direct water from said second storage vessel to said first storage vessel during the heat-discharging phase through said third conduit member and said first conduit member.
Claim 8
Dependent Claim
88 words
An electrically heated central hot water heating system, as set forth in claim 6, wherein a heat-measuring device located in the lower zone of said first storage vessel for measuring the temperature of the water in the vicinity of said heat exchange coil, said heat-measuring device being in communication with said pump in said first conduit member for actuating said pump for supplying water from said second storage vessel through said third conduit member and said first conduit member into the upper zone of said first storage vessel.
Claim 9
Dependent Claim
39 words
An electrically heated central hot water heating system, as set forth in claim 1, wherein a tubular member interconnecting the expansion spaces within Said first and second storage vessels, and a pressure relief valve located within said tubular member.
Claim 10
Dependent Claim
57 words
An electrically heated central hot water heating system, as set forth in claim 2, wherein an outlet line is connected to said first storage vessel at a dimension below the upper end of said vessel equal to the height of the expansion space therein above the maximum water level, and a valve positioned within said overflow line.
Claim 11
Dependent Claim
40 words
An electrically heated central hot water heating system, as set forth in claim 1, wherein a service water heat exchange coil positioned within said first storage vessel in the upper one thereof adjacent said heating element for heating service water.
Claim 12
Dependent Claim
98 words
An electrically heated central hot water heating system, as set forth in claim 1, wherein said convector comprising a bundle of longitudinally extending tubular members arranged in parallel relationship, each of said tubular members comprising a flattened thin wall tubular section having a first transverse dimension and a second transverse dimension with the first transverse dimension being elongated and considerably greater than said second transverse dimension, and a plurality of thin wall plates located transversely of and at a number of spaced locations along the length of said tubular members for securing said tubular members into a bundle.
Claim 13
Independent Claim
329 words
A method of operating a central hot water heating system comprising the steps of providing at least a first closed space, filling water into the closed space to a level affording an expansion space above the level of the water, interconnecting the upper part of the first space with the lower part thereof by a connection disposed exteriorly of the space, heating the water in the upper part of the closed space to a desired temperature and when the desired temperature is reached removing water from the lower part thereof through the exteriorly disposed connection and charging it into the upper part of the closed space until the temperature of the water in the upper part drops to a determined temperature level at which point the water charging is discontinued, repeating the water-heating and water-charging steps until the water in the closed space is heated to a predetermined level and utilizing the heat stored in the water in the closed space for heating purposes at locations spaced remotely from the closed space, providing a second space separate from said first closed space, interconnecting the upper part of said first closed space with the lower part of said second closed space and the lower part of said first closed space with the upper part of said second closed space, heating the water in the upper part of the first closed space and removing water from the lower part of said second closed space for charging it into the upper part of said first closed space in the step of heating the water and circulating heated water from the lower part of said first closed space to the upper part of said second closed space for forming an interconnected heat storage water column, and withdrawing the heat for heating purposes from said first storage space and circulating the heated water from said second storage vessel space to said first storage space for utilizing the heat stored in the storage water column.
Claim 14
Independent Claim
329 words
A method of operating a central hot water heating system comprising the steps of providing at least a first closed space, filling water into the closed space to a level affording an expansion space above the level of the water, interconnecting the upper part of the first space with the lower part thereof by a connection disposed exteriorly of the space, heating the water in the upper part of the closed space to a desired temperature and when the desired temperature is reached removing water from the lower part thereof through the exteriorly disposed connection and charging it into the upper part of the closed space until the temperature of the water in the upper part drops to a determined temperature level at which point the water charging is discontinued, repeating the water-heating and water-charging steps until the water in the closed space is heated to a predetermined level and utilizing the heat stored in the water in the closed space for heating purposes at locations spaced remotely from the closed space, providing a second space separate from said first closed space, interconnecting the upper part of said first closed space with the lower part of said second closed space and the lower part of said first closed space with the upper part of said second closed space, heating the water in the upper part of the first closed space and removing water from the lower part of said second closed space for charging it into the upper part of said first closed space in the step of heating the water and circulating heated water from the lower part of said first closed space to the upper part of said second closed space for forming an interconnected heat storage water column, and withdrawing the heat for heating purposes from said first storage space and circulating the heated water from said second storage vessel space to said first storage space for utilizing the heat stored in the storage water column.
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) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |