US3704691A - Fuel-fired boiler for production of domestic hot water and for heating - Google Patents

Fuel-fired boiler for production of domestic hot water and for heating Download PDF

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Publication number
US3704691A
US3704691A US109300A US3704691DA US3704691A US 3704691 A US3704691 A US 3704691A US 109300 A US109300 A US 109300A US 3704691D A US3704691D A US 3704691DA US 3704691 A US3704691 A US 3704691A
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Prior art keywords
chamber
vessel
compartment
boiler
burner
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Expired - Lifetime
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US109300A
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English (en)
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Willi Brandl
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Individual
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Individual
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/48—Water heaters for central heating incorporating heaters for domestic water
    • F24H1/50—Water heaters for central heating incorporating heaters for domestic water incorporating domestic water tanks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating

Definitions

  • a heating chamber Containing water and having a downwardly open cup-shaped portion receiving a burner having substantially tangentially directed fuel-expelling orifices.
  • a tlue is provided having a vertical portion extending outside the compartment up through the insulated boiler housing and a horizontal portion passing through the chamber and opening centrally above the burner in the cup shapedlower portion of the chamber. This flue is provided with heat-absorbing ribs, as is the cupshaped chamber portion, to pick up heat from the burner.
  • the present invention relates to a boiler and, more particularly, to a boiler used to heat water for domestic use and for house heating.
  • Another object is to provide a boiler responding to the various needs set forth above, i.e. a small, efficient, and trouble-free boiler.
  • a boiler having a closed inner cylindrical vessel through which the water intended for domestic use is passed.
  • a closed heating chamber partially filled with water surrounds the vessel and is provided with a downwardly open cup-shaped portion receiving a burner.
  • Surrounding the heating chamber is a compartment through which the water for use in the heating system is passed. In this manner the heat imparted to the water in the sandwiched chamber is conducted to the water in the vessel and in the compartment.
  • a flue is provided which has an upright portion entirely outside of the vessel, chamber, and compartment, and a horizontal portion passing through the chamber, so that the heat from flue gases can be conducted through its walls to the water in the chamber.
  • the lower portion of the flue and the interior of the downwardly open cup-shaped portion of the chamber are provided with heat-conductive ribs adapted to pick up heat from the burner.
  • the burner is a ring provided with a plurality of outwardly opening peripheral fuel-expelling nozzles or orifices which do not open directly radially, but open generally tangentially. According to a further feature of the present invention these orifices open at an angle of around 45 to tangents of the burner ring at the orifice.
  • FIG. I is a vertical section through the boiler according to the present invention.
  • FIG. 2 is a section taken along line I] II of FIG. 1.
  • FIGS. 3 to 7 are vertical sectional views through details of second and other embodiments of the present invention.
  • a boiler has a'heating chamber 1 with a steel cylindrical wall 2 and a downwardly open cup-shaped bottom wall 3 forming the floor of this chamber and a top 4.
  • a vessel 5 formed by a cylindrical steel wall 6 and inwardly concave top and bottom walls 8 and 7, respectively.
  • the top 4 of the chamber 1 and the top 8 of the vessel 5 in this embodiment are the same concave metal disk.
  • a wire 11 having a diameter of about 6 to 8 millimeters extends helically down between the walls 9 and 10 while engaging both of these walls to define a helical flow path 12 therebetween.
  • the wall 10 extends up beyond the wall 9 and is upwardly closed by a top wall 13 so that the compartment formed by the walls 9, 10 and 13 is cup shaped and downwardly open over the upper region of the heating chamber 1.
  • Both of the top walls 8 and 13 are formed with respective in-line central circular openings 17 and 18 and a ring 19 is welded to the inside of these openings.
  • a cover 20 is bolted to the ring 19 by screws 21 (FIG. 2) and feeds a pair of conduits 22 and 23 into the vessel 5.
  • the conduit 22 has, at one end, along vertical extension 25 opening into the base of the vessel 5 with a funnel-shaped disperser 26 and is connected at its other end to a conduit 24 coupled to a fresh-water-supply.
  • the other'conduit 23 merely opens at the top of the vessel 5 and is connected to a conduit 27 which leads to the domestic hot-water system. In this manner, fresh cold water is drawn into the base of the vessel 5 as hot water is drawn out the top, with this water being heated as it rises.
  • the heating chamber 1 has an interior 28 whose upper region 29 is evacuated and whose lower region 30 extending as a web across the boiler and region 31 extending downwardly from this web 30 are filled with water.
  • the water level 32 is maintained with the aid of a gauge and a water line 47, so that if the level drops below the level 32 water can be admitted and if it goes above the level 32 water can be drawn off through the pipe 47.
  • An expansion chamber 38 is provided which is connected to the path 12.
  • This flue also has a vertical portion 36 entirely outside of the outer compartment and extending up within the boiler housing 37 which is internally lined with thermal insulation 49.
  • a plurality of horizontal portions 44' can also be provided as shown in FIG. 5.
  • the entire heating chamber 1 rests on a circular base 39.
  • a burner ring 40 is provided in the combustion chamber 35 above the lower end of the region 31.
  • This burner is provided with a plurality of peripheral fuel (gas or oil) nozzles 41 each directed at an angle a of 45 to a respective imaginary tangent of the circular burner ring 40.
  • the flames 42 formed by these outlets thus make a spiralling vortex.
  • the cup-shaped lower region of the chamber 1 has a height above the burner corresponding substantially to the burner radius, so that an excellent heat pickup is possible by the water in this chamber.
  • ribs 43 are provided on the base of the web 30 and inclined to the direction 50 of gas flow in the chamber 35.
  • longitudinally extending ribs 44 are provided in the lower flue portion 33 so that the maximum amount of heat is picked up from the flue gases and passed to the water in the heating chamber.
  • the heating chamber Since the heating chamber is closed, the water in it can be heated up very close to and even somewhat beyond the boiling point if desired.
  • a thermostat set at, say 85 C. in the inner vessel S would control the burner 40, while the pump 15 would be controlled by a room wall thermostat.
  • the water in the heating chamber vaporized and rises, then it condenses, giving up its heat to the water in the vessel and in the path 12.
  • FIG. 3 shows an alternative embodiment wherein the heating chamber fully surrounds the vessel 5.
  • the top wall 8a of the vessel 5 and the top wall 4a of the heating chamber 1 are spaced apart and the wall 40 extends at 13a out to the wall 10.
  • FIGS. 6 shows how in such an embodiment a pair of parallel member 11 and 11'' are provided which subdivide the compartment between the walls and 9 into a pair of parallel helical paths l2 and 12".
  • a lateral inlet 14a for the heating water is provided in these embodiments.
  • FIG. 4 there is shown a boiler which is not doublewalled at its top, but wherein the walls 4b, 8b and 13b of the vessel, chamber and compartment areall the same body.
  • FIG. 7 shows how in this embodiment the chamber between the walls 9 and 10 is subdivided by a horizontal wall 48.
  • An inlet l4b',l4b" is provided at the top of each portion defined by the wall 48 and a lower outlet 16' for the upper portion is shown.
  • Such a system is useful where a pair of totally independent heating networks are needed. It is, of course, possible to separate the two helical paths 12 and 12" of FIGS for use in independent networks by forming the upper boiler wall as in FIG. 4 and providing the necessary pairs of outlets and inlets.
  • heating coils in the upper region 29 of the steam chamber 28 in series with the flow path 12 for use in extremely hot heating systems where water above 100 C. is used.
  • a boiler comprising:
  • a closed chamber surrounding the sides and base of said vessel and havinga downwardly open cupshaped portion below said vessel and forming a floor of said chamber, the cup cavity of said portion being located externally of said chamber;
  • a helical member defining a helical flow path centered on a vertical axis in said compartment.
  • said burner means includes an annular burner having a plurality of peripheral fuel-expelling orifices directed substantially tangentially outwardly to form a spiralling flame within said cup-shaped lower portion of said chamber.
  • said means for passing water for domestic use includes a feedthrough collar at the top of said vessel and an inlet conduit and an outlet conduit extending through said collar into said vessel, said boiler being double-walled at the top with one of the walls constituted by said vessel and said collar passing through and welded to both walls.
  • a boiler comprising:
  • a closed chamber surrounding the sides and base of said vessel and having a downwardly open cup shaped portion below said vessel and forming a floor of said chamber, the cup cavity of said portion being located externally of said chamber;
  • burner means under said downwardly open cupshaped portion for heating water in said chamber and thereby conductively heating water in said vessel and in said compartment;
  • a flue for leading off exhaust vapors from said burner cup-shaped lower portion of said chamber, said downwardly open cup-shaped portion of said chamber being provided with heat-conducting ribs exposed to said burner means, said flue being provided at least at said horizontal lower portion with heat-conducting ribs adapted to pick up heat from flue gases.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
US109300A 1970-03-25 1971-01-25 Fuel-fired boiler for production of domestic hot water and for heating Expired - Lifetime US3704691A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH456070A CH521556A (de) 1970-03-25 1970-03-25 Heizkessel für Verbrauchs- und Heizungswasser

Publications (1)

Publication Number Publication Date
US3704691A true US3704691A (en) 1972-12-05

Family

ID=4278350

Family Applications (1)

Application Number Title Priority Date Filing Date
US109300A Expired - Lifetime US3704691A (en) 1970-03-25 1971-01-25 Fuel-fired boiler for production of domestic hot water and for heating

Country Status (8)

Country Link
US (1) US3704691A (fr)
JP (1) JPS463387A (fr)
BE (1) BE763762A (fr)
CA (1) CA936773A (fr)
CH (1) CH521556A (fr)
FR (1) FR2066084A5 (fr)
GB (1) GB1299554A (fr)
NL (1) NL7103752A (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3815552A (en) * 1972-06-12 1974-06-11 Stotz & Co Method of and apparatus for generating, maintaining or re-establishing a vacuum in a vacuum vaporization apparatus for heating one or more liquids
US3980131A (en) * 1975-05-08 1976-09-14 New Brunswick Scientific Co., Inc. Sterilizer for culture media and laboratory ware
DE2742024A1 (de) * 1977-09-17 1979-03-29 Broetje Fa August Heizkessel mit rundem kesselkoerper-grundriss und kubischem gehaeuse
US4170199A (en) * 1978-05-22 1979-10-09 Regor Energy Saver Inc. Closed heat transfer system
US6062174A (en) * 1994-11-02 2000-05-16 Kabushiki Kaisha Kopuran Reduced-pressure steam heating device and method for preventing banging noise generated therein
US20120125269A1 (en) * 2010-11-24 2012-05-24 Zenex Technologies Limited Heater

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5337203A (en) * 1977-09-07 1978-04-06 Hitachi Ltd Steam generator

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2404860A (en) * 1942-12-17 1946-07-30 Miller Herbert William Water heater
US2506336A (en) * 1946-01-24 1950-05-02 Bock Corp Heater
US3007457A (en) * 1958-01-27 1961-11-07 Ospelt Gustav Heating boiler
US3237608A (en) * 1962-10-31 1966-03-01 Brandl Willi Apparatus for heating at least two vessels by a single source of heat

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2404860A (en) * 1942-12-17 1946-07-30 Miller Herbert William Water heater
US2506336A (en) * 1946-01-24 1950-05-02 Bock Corp Heater
US3007457A (en) * 1958-01-27 1961-11-07 Ospelt Gustav Heating boiler
US3237608A (en) * 1962-10-31 1966-03-01 Brandl Willi Apparatus for heating at least two vessels by a single source of heat

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3815552A (en) * 1972-06-12 1974-06-11 Stotz & Co Method of and apparatus for generating, maintaining or re-establishing a vacuum in a vacuum vaporization apparatus for heating one or more liquids
US3980131A (en) * 1975-05-08 1976-09-14 New Brunswick Scientific Co., Inc. Sterilizer for culture media and laboratory ware
DE2742024A1 (de) * 1977-09-17 1979-03-29 Broetje Fa August Heizkessel mit rundem kesselkoerper-grundriss und kubischem gehaeuse
US4170199A (en) * 1978-05-22 1979-10-09 Regor Energy Saver Inc. Closed heat transfer system
US6062174A (en) * 1994-11-02 2000-05-16 Kabushiki Kaisha Kopuran Reduced-pressure steam heating device and method for preventing banging noise generated therein
US20120125269A1 (en) * 2010-11-24 2012-05-24 Zenex Technologies Limited Heater

Also Published As

Publication number Publication date
JPS463387A (fr) 1971-10-29
BE763762A (fr) 1971-08-02
CH521556A (de) 1972-04-15
FR2066084A5 (fr) 1971-08-06
DE2048813A1 (fr) 1971-11-04
GB1299554A (en) 1972-12-13
CA936773A (en) 1973-11-13
NL7103752A (fr) 1971-09-28

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