US3618572A - Sectional boiler - Google Patents

Sectional boiler Download PDF

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Publication number
US3618572A
US3618572A US874832A US3618572DA US3618572A US 3618572 A US3618572 A US 3618572A US 874832 A US874832 A US 874832A US 3618572D A US3618572D A US 3618572DA US 3618572 A US3618572 A US 3618572A
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US
United States
Prior art keywords
passages
water
flue
gas passages
boiler
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Expired - Lifetime
Application number
US874832A
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English (en)
Inventor
Kurt Erich Nauert
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Strebelwerk GmbH
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Strebelwerk GmbH
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Publication date
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Publication of US3618572A publication Critical patent/US3618572A/en
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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
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/24—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers
    • F24H1/30—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle being built up from sections
    • F24H1/32—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle being built up from sections with vertical sections arranged side by side

Definitions

  • the present invention has the object of providing a structural arrangement of the return and forward flue passages whereby on each heat exchange surface of the boiler, a maximum temperature differential is available and thus drops below the point of condensation are avoided.
  • this is achieved in a sectional boiler of the type described by providing two forward flue passages and at least four return flue passages situated close to the forward and reverse water flow connecting pipes and further, by providing on either side of the boiler, return flue passages in the front section being connected via a flue reversing passage to one of the forward flue passages joining the exhaust gas collector.
  • the hot exhaust gases are thus distributed to at least two return flue passages which are situated near the forward flow connecting pipe and to at least two further return flue passages which are arranged close to the reverse flow connecting pipe.
  • at least four return flue passages are connected to two forward flue passages that extend along the rightand left-hand sides of the boiler at approximately half the height of the boiler which passages lead to the waste gas collector.
  • the construction of the central heating boiler according to the present invention will be simplified if only two return flow passages are provided. One of which is adjacent a forward flow connecting pipe and the other of which is adjacent a reverse flow connecting pipe. Thus, they are situated partially in the right-hand and partially in the left-hand side of the boiler.
  • the connecting pipes are advantageously fitted inside the sections themselves; that is, two pairs of return flow passages will then be provided on either side of the forward and reverse flow connecting pipes respectively.
  • cleaning apertures have been provided in the front section. Cleaning is facilitated if each of the lower return flue passages also has in the rear section, a cleaning aperture which can be closed by a plug.
  • baffle plates are advantageously inserted therein which carry ribs that increase the heat transmission and that extend in the direction of the flow and project between similar ribs of the inner walls of the passages.
  • These inserted baffle plates preferably lie loosely in the passages and at least one of the ribs of the baffle plates is formed as an elongated supporting rib.
  • FIG. 2 is a plan view of a middle section of the boiler of FIG.
  • FIG. 3 is a rear elevation of the rear section of the boiler of FIG. 1, as viewed from the combustion chamber;
  • FIG. 4 is forward or return flue passage with an inserted baffle plate on an enlarged scale.
  • a cylindrically shaped boiler burning fluid fuels comprises a central core combustion chamber 2, middle sections 4, a front section 6, a rear section 8 and an exhaust gas collector or flue 10.
  • the boiler is surrounded by concentrically arranged jackets for the water compartments and the flue passages as will be explained hereinafter.
  • a burner not shown is inserted in the opening.
  • the hot exhaust fuel gases of the combustion pass from the combustion chamber 2 via flue reversing passages 12 into the upper return flue passages 14 and 16 (FIG. 2) and the lower return flue passages 18 and 20.
  • the water flows via the reverse flow pipe 26 into the outer peripheral water compartment 28 and the inner peripheral water compartment 30. These water compartments 28 and 30 are interconnected via radial passages 32 which separate the exhaust gas passages from each other.
  • the heated water emerges from the boiler through the forward flow pipe 34.
  • the in flowing water is heated by the lower return flue passages 18 and 20 to above the temperature of the point of condensation of the exhaust gases. It is then heated further by the less hot exhaust gases of the forward flue passages 22 and 24 without any risk that exhaust gas condensation will occur in these exhaust gas passages 22 and 24. Finally, the water is heated to its final temperature when it comes into contact with the hot exhaust gases of the upper return flue passages 16 and 14. In this manner it is ensured by the abovedescribed arrangement of the exhaust gas passages that a maximum temperature differential is always present on the heat exchange surfaces between water and exhaust gas.
  • a further improvement in the economy of the central heating boiler according to the invention can be achieved, as shown in FIG. 4, by the arrangement of an insert baffle plate 40 in a exhaust passage which is bounded by peripheral water compartments 28 and 30 and by radial passages 32.
  • This insert baffle plate 40 has a series of radial ribs 42, one of which is constructed as a supporting rib 44. These ribs provide an increased heat transfer surface by their construction that extends into the flue passages.
  • a further support is provided by the extension 48 of the inserted plate.
  • the individual ribs 42 protrude between ribs 46 which provide additional heat transfer surfaces and which are also parallel to the axis. Ribs 46 protrude from the walls of the water compartments 28 and 30 into the exhaust gas passage.
  • the front section 6 For cleaning the exhaust gas passages the front section 6 has cleaning apertures 50 and 52 closed by detachable covers When cleaning, a large amount of dirt drops via the flue reversing passage of the front section into the lower return flue passages 18 and 20. When cleaning, this dirt can easily be pushed to the back by the brushes and it is therefore advantageous to provide at the ends of the lower return flue passages cleaning aperture 54 in the rear section 8.
  • Each of the cleaning apertures 54 is provided with a refractory plug 56.
  • a sectional liquid fuel burning boiler comprising; a forward and a rear member, a combustion chamber, a plurality of middle sections surrounding the said combustion chamber in parallel axial configurations;
  • Two of the forward flow gas passages being located between two each return flow gas passages respectively at to each other at the midsection of the boiler.
  • a sectional liquid fuel burning water boiler comprising a combustion chamber; a plurality of flue gas passages spaced from each other and connected with said combustion chamber;
  • a plurality of hot and cold water conducting passages spaced from each other connected with said water jackets;
  • Condensation avoiding means connecting said plurality of water jackets with said water conducting passages spaced from each other and relative to the said flue gas passages, arranged to avoid contact of partially cooled hot flue gases with the said cold water return passages to prevent reduction of the temperature of the said partially cooled hot flue gases below the dew point.

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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-Exchange Devices With Radiators And Conduit Assemblies (AREA)
US874832A 1968-11-15 1969-11-07 Sectional boiler Expired - Lifetime US3618572A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681809073 DE1809073A1 (de) 1968-11-15 1968-11-15 Sammelheizungskessel

Publications (1)

Publication Number Publication Date
US3618572A true US3618572A (en) 1971-11-09

Family

ID=5713407

Family Applications (1)

Application Number Title Priority Date Filing Date
US874832A Expired - Lifetime US3618572A (en) 1968-11-15 1969-11-07 Sectional boiler

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US (1) US3618572A (enrdf_load_html_response)
AT (1) AT298738B (enrdf_load_html_response)
BE (1) BE739824A (enrdf_load_html_response)
CH (1) CH489762A (enrdf_load_html_response)
DE (1) DE1809073A1 (enrdf_load_html_response)
FR (1) FR1595437A (enrdf_load_html_response)
GB (1) GB1246816A (enrdf_load_html_response)
IE (1) IE32682B1 (enrdf_load_html_response)
NL (1) NL6917151A (enrdf_load_html_response)
NO (1) NO124745B (enrdf_load_html_response)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5558046A (en) * 1992-03-05 1996-09-24 Dr.-Ing. Fritz Schoppe Fire-tube boiler
US6167846B1 (en) * 1998-05-14 2001-01-02 Toyota Jidosha Kabushiki Kaisha Catalytic combustion heater
US6170440B1 (en) 1998-05-13 2001-01-09 Premark Feg L.L.C. Gas fired booster
US20110139093A1 (en) * 2008-03-07 2011-06-16 Rainer Rausch Cast iron or aluminum sectional boiler
US20110185987A1 (en) * 2008-08-14 2011-08-04 Rainer Rausch Cast iron or aluminum sectional boiler
US20120055420A1 (en) * 2009-06-05 2012-03-08 Gerhard Jung Sectional boiler
EP2395294A3 (de) * 2010-06-11 2015-09-23 Robert Bosch GmbH Gliederheizkessel
US10352585B1 (en) * 2018-02-09 2019-07-16 Theodore S. BROWN Multi-pass boiler and retrofit method for an existing single-pass boiler

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1084456B (it) * 1977-03-17 1985-05-25 Europ Riscaldamento Fer Caldaia componibile perfezionata per combustibili liqui e gassosi.
JPS53150301U (enrdf_load_html_response) * 1977-05-02 1978-11-27
AT396720B (de) * 1988-08-18 1993-11-25 Vaillant Gmbh Gliederkessel
DE102008039403A1 (de) * 2008-08-22 2010-02-25 Robert Bosch Gmbh Heizgerät

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB451820A (en) * 1935-11-27 1936-08-12 Leslie Samuel Brown Sectional steam and hot water boilers
US2316603A (en) * 1941-06-03 1943-04-13 Chrysler Corp Percolator boiler
FR1484085A (fr) * 1966-06-10 1967-06-09 Strebelwerk Gmbh Chaudière à éléments

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB451820A (en) * 1935-11-27 1936-08-12 Leslie Samuel Brown Sectional steam and hot water boilers
US2316603A (en) * 1941-06-03 1943-04-13 Chrysler Corp Percolator boiler
FR1484085A (fr) * 1966-06-10 1967-06-09 Strebelwerk Gmbh Chaudière à éléments

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5558046A (en) * 1992-03-05 1996-09-24 Dr.-Ing. Fritz Schoppe Fire-tube boiler
US6170440B1 (en) 1998-05-13 2001-01-09 Premark Feg L.L.C. Gas fired booster
US6167846B1 (en) * 1998-05-14 2001-01-02 Toyota Jidosha Kabushiki Kaisha Catalytic combustion heater
US20110139093A1 (en) * 2008-03-07 2011-06-16 Rainer Rausch Cast iron or aluminum sectional boiler
US20110185987A1 (en) * 2008-08-14 2011-08-04 Rainer Rausch Cast iron or aluminum sectional boiler
US8869752B2 (en) * 2008-08-14 2014-10-28 Robert Bosch Gmbh Cast iron or aluminum sectional boiler
US20120055420A1 (en) * 2009-06-05 2012-03-08 Gerhard Jung Sectional boiler
EP2395294A3 (de) * 2010-06-11 2015-09-23 Robert Bosch GmbH Gliederheizkessel
US10352585B1 (en) * 2018-02-09 2019-07-16 Theodore S. BROWN Multi-pass boiler and retrofit method for an existing single-pass boiler

Also Published As

Publication number Publication date
DE1809073A1 (de) 1970-06-11
NL6917151A (enrdf_load_html_response) 1970-05-20
IE32682L (en) 1970-05-15
GB1246816A (en) 1971-09-22
FR1595437A (enrdf_load_html_response) 1970-06-08
BE739824A (enrdf_load_html_response) 1970-03-16
CH489762A (de) 1970-04-30
NO124745B (enrdf_load_html_response) 1972-05-29
AT298738B (de) 1972-05-25
IE32682B1 (en) 1973-10-31

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