US3638620A - Steam or hot-water boiler - Google Patents

Steam or hot-water boiler Download PDF

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Publication number
US3638620A
US3638620A US25623A US3638620DA US3638620A US 3638620 A US3638620 A US 3638620A US 25623 A US25623 A US 25623A US 3638620D A US3638620D A US 3638620DA US 3638620 A US3638620 A US 3638620A
Authority
US
United States
Prior art keywords
end plate
combustion chamber
adjacent
convection
convection part
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US25623A
Other languages
English (en)
Inventor
Nils Axel Ambjorn Ostbo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Goetaverken Angteknik AB
Original Assignee
Goetaverken Angteknik AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Goetaverken Angteknik AB filed Critical Goetaverken Angteknik AB
Application granted granted Critical
Publication of US3638620A publication Critical patent/US3638620A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F24H1/40—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes
    • F24H1/406—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes the tubes forming a membrane wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B9/00—Steam boilers of fire-tube type, i.e. the flue gas from a combustion chamber outside the boiler body flowing through tubes built-in in the boiler body
    • F22B9/02—Steam boilers of fire-tube type, i.e. the flue gas from a combustion chamber outside the boiler body flowing through tubes built-in in the boiler body the boiler body being disposed upright, e.g. above the combustion chamber
    • F22B9/04—Steam boilers of fire-tube type, i.e. the flue gas from a combustion chamber outside the boiler body flowing through tubes built-in in the boiler body the boiler body being disposed upright, e.g. above the combustion chamber the fire tubes being in upright arrangement

Definitions

  • the present invention refers to a steam or hot-water boiler provided with a radiant heat combustion chamber and at least one convection part arranged as an axial elongation of said chamber and designed as a heat exchanger containing a number offire tubes fitted between two end plates.
  • the aim of the invention is to design the components of the boiler to obtain an efficient cooling of that end plate of the convection part, which is turned towards the combustion chamber.
  • the convection part is designed as fire tube boiler, where the passage of water outside the tubes is governed by means of baffle plates arranged parallel to the end plates, and the invention is characterized by the distance between the end plate turned towards the chamber and the baffle plate adjacent this end plate being noticeably smaller than the mutual distance between any two adjacent baffle plates.
  • the boiler is provided with a cylindrical combustion chamber 10, or furnace, and a convection part located at each end of the furnace, said convection parts being generally denoted by 11 and 12.
  • Three oil or gas burners 13 are mounted in the wall of the furnace and are directed tangentially with respect thereto in such a manner that the gases will obtain a rotating movement within the furnace.
  • the combustion gases will escape from the furnace through the fire tubes 14 of the convention parts, and will reach chambers 15 and 16 at the outward ends of the convection parts.
  • These chambers are connected to a flue or funnel. Water is supplied through a connection 17 at the lower end of the boiler and will leave the boiler through a connection 18 at the upper end of the boiler.
  • Each convection part consists of a cylindrical shell 19 and two end plates 20 and 21 respectively.
  • the fire tubes 14 are connected to the end plates by welding, or by their ends being expanded into bores in said plates.
  • the fire tubes will act as strengthening members for the end plates.
  • the water chamber within each convection part is subdivided into a number of passages by means of baffle plates 22 and 23 which, as represented in the drawing, are disposed with staggered openings providing a labyrinthine heat-exchange space for flow of water forwards and backwards over fire tubes 14.
  • baffle plate 23 which is fitted adjacent to the end plate 20 turned towards the furnace, is located noticeably closer to that end plate than the distance between any two adjacent baffle plates in the remainder of the convection part.
  • the velocity of the water within the passage formed between the end plate and the pertaining baffle plate will thereby be considerably increased, which is advantageous with respect to the heat transfer.
  • any possible steam bubbles, which may have been formed along the end plate will be carried away by the stream of water towards the outlet.
  • the furnace 10 is surrounded by water tubes 24. These are preferably provided with flanges and are welded together in such a manner that the gastight wall is formed. These water tubes are connected to the end plate 20 outside the fire tubes and an efficient water circulation is thereby guaranteed.
  • the invention may also be utilized with boilers having a single convection part only.
  • the furnace preferably is mounted in the top part of the boiler.
  • the upper convection part With the arrangement for mounting the burners shown on the drawing it is possible to substitute the upper convection part with an end portion having twin walls but lacking fire tubes
  • the boiler may also be mounted with its longitudinal axis horizontal, and
  • a steam drum has to be fitted at outlet 18.
  • a boiler having a radiant heat combustion chamber and at least one convection part arranged as an axial elongation of said combustion chamber and designed as a heat exchanger containing a number of fire tubes fitted between a first end plate immediately adjacent said combustion chamber and a second end plate remote from said combustion chamber, a number of spaced baffle plates arranged within said convection part parallel to said end plates said baffle plates having staggered openings providing a labyrinthine heat-exchange space for flow of water forwards and backwards transversely over said fire tubes, the distance between said first end plate and the baffle plate nearest thereto being substantially smaller than is the mutual distance between any two adjacent baffle plates within the convection part, whereby flow velocity in the space between said first end plate and its next adjacent baffle plate will be substantially increased over the flow velocity between any two adjacent baffle plates.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)
US25623A 1969-04-23 1970-04-06 Steam or hot-water boiler Expired - Lifetime US3638620A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE5756/69A SE321486B (de) 1969-04-23 1969-04-23

Publications (1)

Publication Number Publication Date
US3638620A true US3638620A (en) 1972-02-01

Family

ID=20267160

Family Applications (1)

Application Number Title Priority Date Filing Date
US25623A Expired - Lifetime US3638620A (en) 1969-04-23 1970-04-06 Steam or hot-water boiler

Country Status (7)

Country Link
US (1) US3638620A (de)
CH (1) CH501881A (de)
DE (1) DE2019253A1 (de)
FI (1) FI50024C (de)
GB (1) GB1263021A (de)
NO (1) NO126042B (de)
SE (1) SE321486B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110283703A1 (en) * 2008-05-27 2011-11-24 Synthesis Energy Systems, Inc. hrsg for fluidized gasification

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US681244A (en) * 1900-12-04 1901-08-27 Motormobile Company Water-circulator for boilers.
US989270A (en) * 1910-04-02 1911-04-11 Joseph Henry Lester Steam-boiler.
US1658819A (en) * 1926-07-22 1928-02-14 Uebelmesser Charles Steam generator
US2388647A (en) * 1944-10-07 1945-11-06 Howard G Sawyer Fire-tube boiler

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US681244A (en) * 1900-12-04 1901-08-27 Motormobile Company Water-circulator for boilers.
US989270A (en) * 1910-04-02 1911-04-11 Joseph Henry Lester Steam-boiler.
US1658819A (en) * 1926-07-22 1928-02-14 Uebelmesser Charles Steam generator
US2388647A (en) * 1944-10-07 1945-11-06 Howard G Sawyer Fire-tube boiler

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110283703A1 (en) * 2008-05-27 2011-11-24 Synthesis Energy Systems, Inc. hrsg for fluidized gasification
US9103234B2 (en) * 2008-05-27 2015-08-11 Synthesis Energy Systems, Inc. HRSG for fluidized gasification

Also Published As

Publication number Publication date
CH501881A (de) 1971-01-15
FI50024C (fi) 1975-11-10
SE321486B (de) 1970-03-09
GB1263021A (en) 1972-02-09
NO126042B (de) 1972-12-11
DE2019253A1 (de) 1970-11-12
FI50024B (de) 1975-07-31

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