Patent US3732848A successfully refreshed from Google Patents.
US3732848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boiler
Assignee: Individual
•
Filing: 1971-05-04
•
Granted: 1973-05-15
•
Expires: 1991-05-04
Abstract
Abstract A circulating liquid heated heating system in which a boiler is connected to a conduit system having an outlet for heated liquid leading to the conduit system and an inlet for liquid returned from the conduit system. A heating space in the boiler has a closed upper end and an open lower end in communication with the return liquid, and a heating means extends into or through the heating space, whereby liquid in the heating space is heated and converted to steam. The steam forces liquid out of the heating space and into the outlet from the boiler to the conduit system. The lowering of the liquid level in the heating space cools and condenses the steam in the heating space, thereby reducing the pressure to a pressure below the pressure of return liquid to the inlet. Liquid from the inlet then raises the level of liquid in the heating space, the liquid volume of the boiler is increased, the sound level of the system is reduced and the risk of overheating is reduced by surrounding the heating space with a liquid containing vessel and interposing an insulating layer between at least the upper portion of the heating space and the body of liquid. Because of the high efficiency of the boiler, the boiler can be combined with tube sets laterally displaced from the boiler and having additional heating units between each unit.
Inventors
- 👤 N Bolin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:37
CPC Classifications
F; F24; F24H; F24H1/00; F24H1/22; F24H1/225; F24H1/34; F24H1/36
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
221 words
A boiler useful in a system for heating and circulating a liquid which includes a conduit system through which the heated liquid will circulate, the boiler comprising: a liquid inlet for connection to the return end of the conduit system and a liquid outlet for connection to the input of the conduit system, a liquid reservoir zone communicating with said outlet and having therein a heating space provided with a closed upper end and a lower end in liquid flow communication with the reservoir zone, at least the upper portion of the heating space being heat insulated from the reservoir zone, the inlet and outlet being located with respect to the reservoir zone and the heating space, and the heating space being located in relation to the reservoir zone, in such a way that when liquid within the heating space is heated, steam is generated in the upper portion of the space creating a steam zone and pressure which forces heated liquid from the space through the reservoir and from the outlet, which in turn causes a drop in pressure due to the enlargement of the steam zone downwardly in the heating space until the steam condenses upon its arrival at a cooler area in the heating zone, whereby liquid from the inlet is caused to ascend into the heating zone.
Claim 2
Dependent Claim
221 words
A boiler useful in a system for heating and circulating a liquid which includes a conduit system through which the heated liquid will circulate, the boiler comprising: a liquid inlet for connection to the return end of the conduit system and a liquid outlet for connection to the input of the conduit system, a liquid reservoir zone communicating with said outlet and having therein a heating space provided with a closed upper end and a lower end in liquid flow communication with the reservoir zone, at least the upper portion of the heating space being heat insulated from the reservoir zone, the inlet and outlet being located with respect to the reservoir zone and the heating space, and the heating space being located in relation to the reservoir zone, in such a way that when liquid within the heating space is heated, steam is generated in the upper portion of the space creating a steam zone and pressure which forces heated liquid from the space through the reservoir and from the outlet, which in turn causes a drop in pressure due to the enlargement of the steam zone downwardly in the heating space until the steam condenses upon its arrival at a cooler area in the heating zone, whereby liquid from the inlet is caused to ascend into the heating zone.
Claim 3
Dependent Claim
22 words
A boiler according to claim 1 whereiN the outlet is located so as to be below the liquid level in said reservoir.
Claim 4
Dependent Claim
65 words
A boiler according to claim 2 wherein said heating space comprises a double-walled conduit means extending into said reservoir, the zone defined within the inner-most walls being in communication with a source of heat for heating the liquid and the zone defined between the inner and outermost walls being closed at its upper end and being in open, liquid flow communication with the reservoir zone.
Claim 5
Dependent Claim
22 words
A boiler according to claim 3 wherein the zone defined within the inner and outermost walls is entirely surrounded by said reservoir.
Claim 6
Dependent Claim
42 words
A boiler according to claim 3 wherein the zone defined within the inner-most walls is formed by, and the innermost walls define an open ended conduit and said source of heat is a gas heater which blows heated gas through said conduit.
Claim 7
Dependent Claim
118 words
A boiler according to claim 3 wherein the zone defined within the innermost walls is formed by, and thus the walls define, an open ended conduit whose upper end terminates within the confines of the zone defined between the inner and outermost walls, said outermost walls extending upwardly beyond the upper end of the innermost walls and terminating in a cap portion which also defines and closes said zone between the inner and outermost walls and wherein said boiler also includes a means for heating said liquid which extends through the zone defined by the innermost walls and into the zone defined by the inner and outermost walls at a point above the termination of the innermost walls.
Claim 8
Dependent Claim
22 words
A boiler according to claim 2 wherein the outlet includes a valve which opens and closes in response to the pressure produced.
Claim 9
Dependent Claim
14 words
A boiler according to claim 1 wherein said inlet communicates with said heating space.
Claim 10
Dependent Claim
13 words
A boiler according to claim 1 wherein said inlet communicates with said reservoir.
Claim 11
Dependent Claim
39 words
A boiler according to claim 1 which is quiet in operation, wherein said heating space is substantially surrounded with insulation and by said reservoir, and said boiler is so designed that during operation said reservoir is filled with liquid.
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) | 1976-05-14 | 1976-11-13 | 1977-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-14 | 1980-11-13 | 1981-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-14 | 1984-11-13 | 1985-05-15 | $7700.00 | Window Closed / Lapsed |