EP0473946B1 - Gliederheizkessel - Google Patents

Gliederheizkessel Download PDF

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Publication number
EP0473946B1
EP0473946B1 EP91113075A EP91113075A EP0473946B1 EP 0473946 B1 EP0473946 B1 EP 0473946B1 EP 91113075 A EP91113075 A EP 91113075A EP 91113075 A EP91113075 A EP 91113075A EP 0473946 B1 EP0473946 B1 EP 0473946B1
Authority
EP
European Patent Office
Prior art keywords
boiler
water
sectional heating
elements
region
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
EP91113075A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0473946A1 (de
Inventor
Manfred Zeimes
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.)
ThyssenKrupp Technologies AG
Original Assignee
Thyssen Industrie AG
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 Thyssen Industrie AG filed Critical Thyssen Industrie AG
Priority to AT91113075T priority Critical patent/ATE102333T1/de
Publication of EP0473946A1 publication Critical patent/EP0473946A1/de
Application granted granted Critical
Publication of EP0473946B1 publication Critical patent/EP0473946B1/de
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
    • F24H1/24—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 invention relates to a sectional boiler with a plurality of boiler sections arranged parallel and vertically next to one another, consisting of two end and / or one or more central boiler sections, preferably made of cast material, with a combustion chamber in the lower region of the sectional boiler and above it vertical gas discharge channels arranged between the boiler sections, the boiler sections being rectangular to a square floor plan, in the area of a floor plan corner a flow hub, in the area of an opposite floor plan corner a return hub and a water space connecting both hubs.
  • the boiler sections are made of gray cast iron. Versions made of aluminum or copper are possible. In the known designs, the water space between the supply hub and the return hub extends essentially over the entire surface area of the boiler element, so that the ratio of the heating surfaces in contact with gas or water is almost 1: 1.
  • the outer sides of the boiler elements in contact with the gas can be provided with ribs, knobs or the like to improve the heat transfer. Although the ribs, knobs or Such the gas-contacting outer sides lead to an increase in the wall temperature of the boiler elements, which are generally suspended in a vertical orientation, the gases passing by on the outer sides cool down so quickly while maintaining low water temperatures that the dew point temperature of the gases is reached quickly. The dew point temperature of the gases is around 52 ° Celsius. The consequence of this is that those areas on the outer sides of the boiler elements which are swept by gases with temperatures below the dew point temperature corrode. This affects not only the heat transfer but also the flow conditions in the sectional boiler.
  • the object of the invention is to improve a sectional boiler of the type described above in such a way that the dew point temperature is not fallen below if possible at low water temperatures on the gas-contacting heating surfaces.
  • the water space adjoining the return hub extends only in the region of the lower half of the boiler element and in that the water space is connected to the feed hub via at least one water channel.
  • the water space should extend over 30-80%, preferably 60% ⁇ 5% of the height of the boiler element.
  • the width of the water channel can be about 1/8 to 3/4 of the boiler section width.
  • water cooling of the boiler section walls takes place essentially only in the area of the water space, that is, where the gases passing by the boiler section still have sufficiently high temperatures.
  • non-water-carrying areas of the boiler element are at least partially cast hollow.
  • the shift in the dew point line explained at the outset is not adversely affected thereby.
  • the water channel and / or the water space can also be double-walled, with heat-conducting bridges being arranged evenly distributed between the wall side in contact with the exhaust gas and the water in contact with the wall.
  • the invention proposes that water-filled heating surfaces protrude from the water chamber of the central boiler sections below into the combustion chamber.
  • the boiler element 1 shown in FIGS. 1, 1a is arranged together with similar boiler elements 1, E, M in a vertical orientation as in a sectional boiler shown in FIG. 4.
  • the boiler member 1 is made of gray cast iron. Versions made of aluminum or copper are possible.
  • the boiler member 1 has a rectangular to square plan and in the area of a plan corner a lead hub 2, in the area of the diametrically opposed plan corner a return hub 3 and a water space 4 connecting both hubs.
  • the water space 4 extends over the entire width B of the embodiment shown Boiler link and about 30-80% of the height H of the boiler link.
  • the water space 4 is connected to the lead hub 2 via the water channel 5 extending from its upper edge.
  • the width of the water channel 5 corresponds to approximately 1/8 of the width B of the boiler element. In other versions, several water channels can also be provided.
  • the non-water-carrying areas 6 of the boiler element 1 can be cast hollow. This is not shown in detail.
  • the water channel 5a is designed to be substantially wider and double-walled in comparison to that in FIG. It can be seen in particular from FIG. 1b that the exhaust gas-touching A and the water-touching W wall sides are connected to one another via heat-conducting bridges 8.
  • FIG. 2 shows the temperature distribution on the outer sides of the boiler element 1 when working with normal exhaust gas temperatures and through the boiler element 1 conducted water is only heated to moderate temperatures in the range of up to 40 ° Celsius.
  • the wall temperatures of the boiler element 1 at the lower edge are approximately 118 ° Celsius and in the area of the water space 4 are 100 ° Celsius.
  • the dew point temperature of 52 ° Celsius is only reached or fallen below in the upper left area near the lead hub 2.
  • the dew point line (52 ° Celsius) can, however, also be shifted beyond the feed hub 2 if a heating surface 7 which increases the boiler link height is connected to the boiler element 1 above the feed hub 2. Then the dew point temperature of 52 ° Celsius in the area of the boiler element 1 is no longer reached or fallen below.
  • FIG. 3 shows the temperature distribution on a boiler element of conventional design, in which the water space extends over the entire plan area between the supply hub 2 and the return hub 3. It can be seen that the dew point temperature of 52 ° Celsius is already reached in the lower half of the boiler section. In addition, the boiler walls have significantly lower temperatures.
  • Fig. 4 shows the arrangement of several boiler sections side by side, two end boiler sections E receiving two middle boiler sections M between them. These boiler sections are all connected on the water side to the supply hub 2 and return hub 3. Below the central boiler sections M is the combustion chamber F with the burner B lying horizontally. From the combustion chamber F, the flue gases move vertically upwards through the gas exhaust ducts G and then to the chimney.

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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)
  • Incineration Of Waste (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
EP91113075A 1990-08-22 1991-08-03 Gliederheizkessel Expired - Lifetime EP0473946B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT91113075T ATE102333T1 (de) 1990-08-22 1991-08-03 Gliederheizkessel.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4026507 1990-08-22
DE4026507 1990-08-22
DE4116383A DE4116383A1 (de) 1990-08-22 1991-05-18 Gliederheizkessel
DE4116383 1991-05-18

Publications (2)

Publication Number Publication Date
EP0473946A1 EP0473946A1 (de) 1992-03-11
EP0473946B1 true EP0473946B1 (de) 1994-03-02

Family

ID=25896111

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91113075A Expired - Lifetime EP0473946B1 (de) 1990-08-22 1991-08-03 Gliederheizkessel

Country Status (2)

Country Link
EP (1) EP0473946B1 (pt)
DE (2) DE4116383A1 (pt)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4220987C3 (de) * 1992-06-26 1997-04-24 Buderus Heiztechnik Gmbh Gliederheizkessel
DE9312911U1 (de) * 1993-08-28 1993-10-14 Viessmann Werke Gmbh & Co, 35108 Allendorf Atmosphärischer Gasheizkessel
DE102004025621B4 (de) * 2004-05-25 2013-12-19 Robert Bosch Gmbh Wärmetauscher

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK12353C (da) * 1909-07-19 Max Tornack Ledkedel med flere ent to Ledrækker.
FR2134852A5 (pt) * 1971-04-22 1972-12-08 Fonderie Soc Gen De

Also Published As

Publication number Publication date
EP0473946A1 (de) 1992-03-11
DE4116383A1 (de) 1992-02-27
DE4116383C2 (pt) 1992-11-12
DE59101086D1 (de) 1994-04-07

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