EP0473946A1 - Chaudière sectionnée - Google Patents

Chaudière sectionnée Download PDF

Info

Publication number
EP0473946A1
EP0473946A1 EP91113075A EP91113075A EP0473946A1 EP 0473946 A1 EP0473946 A1 EP 0473946A1 EP 91113075 A EP91113075 A EP 91113075A EP 91113075 A EP91113075 A EP 91113075A EP 0473946 A1 EP0473946 A1 EP 0473946A1
Authority
EP
European Patent Office
Prior art keywords
boiler
water
sectional
sections
hub
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.)
Granted
Application number
EP91113075A
Other languages
German (de)
English (en)
Other versions
EP0473946B1 (fr
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/fr
Application granted granted Critical
Publication of EP0473946B1 publication Critical patent/EP0473946B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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 extraction 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.
  • Such a sectional boiler is known from practice.
  • the boiler sections are made of gray cast iron. Versions made of aluminum or copper are possible.
  • 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 outside of the boiler elements in contact with gas can be provided with ribs, knobs or the like to improve the heat transfer.
  • the ribs, knobs or the like of 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 the outer sides cool down so quickly when the water temperatures are maintained 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 sections 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 in the introduction so that the dew point temperature is not fallen below at low water temperatures on the gas-contacted 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 flow 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.
  • the gases can still give off their sensible heat to the non-water-carrying parts of the boiler element, but the dew point temperature of the gases is not fallen below. Accordingly, the dew point line moves into the area of the lead hub. It can also be moved beyond the feed hub if a heating surface which increases the boiler link height is connected to the boiler section in the area of the feed hub.
  • the water channel and / or the water space can also be double-walled, heat-conducting bridges being arranged evenly distributed between the wall side in contact with the exhaust gas and the water in contact.
  • 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 member 1 shown in Figures 1, 1 is together with a similar boiler structure 1, E, M arranged 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 element 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 opposite 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 chamber 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 according to FIG. 1. It can be seen in particular from FIG. 1 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 the usual exhaust gas temperatures are used and the water passed through the boiler element 1 is only heated to moderate temperatures in the range of up to 40 * Celsius.
  • the wall temperatures of the boiler element 1 are approximately 118 degrees Celsius at the lower edge and 100 degrees Celsius in the area of the water space 4.
  • 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 adjoins 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 central 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.

Landscapes

  • 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 Chaudière sectionnée Expired - Lifetime EP0473946B1 (fr)

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
DE4116383 1991-05-18
DE4116383A DE4116383A1 (de) 1990-08-22 1991-05-18 Gliederheizkessel

Publications (2)

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

Family

ID=25896111

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91113075A Expired - Lifetime EP0473946B1 (fr) 1990-08-22 1991-08-03 Chaudière sectionnée

Country Status (2)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0640801A1 (fr) * 1993-08-28 1995-03-01 VIESSMANN WERKE GmbH & CO. Brûleur atmosphérique à gaz

Families Citing this family (2)

* 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
DE102004025621B4 (de) * 2004-05-25 2013-12-19 Robert Bosch Gmbh Wärmetauscher

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK16303C (da) * 1912-08-12 Strebelwerk Gmbh Ledkedel med flere end to Ledrækker.
DE2217921A1 (de) * 1971-04-22 1972-11-09 Societe Generale de Fonderie Paris Kessel, insbesondere für Zentralheizungen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK16303C (da) * 1912-08-12 Strebelwerk Gmbh Ledkedel med flere end to Ledrækker.
DE2217921A1 (de) * 1971-04-22 1972-11-09 Societe Generale de Fonderie Paris Kessel, insbesondere für Zentralheizungen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0640801A1 (fr) * 1993-08-28 1995-03-01 VIESSMANN WERKE GmbH & CO. Brûleur atmosphérique à gaz

Also Published As

Publication number Publication date
EP0473946B1 (fr) 1994-03-02
DE4116383C2 (fr) 1992-11-12
DE4116383A1 (de) 1992-02-27
DE59101086D1 (de) 1994-04-07

Similar Documents

Publication Publication Date Title
DE1551489A1 (de) Waermeaustauscher
CH616499A5 (en) Central heating system with a boiler and an additional heat exchanger for preheating the medium flowing back to the boiler
CH667521A5 (de) Russblaeser.
DE2536657A1 (de) Waermeaustauscher
DE2526332A1 (de) Waermetauscher, insbesondere radiator
EP0473946B1 (fr) Chaudière sectionnée
EP0086175A2 (fr) Echangeur de chaleur
CH686741A5 (de) Dampferzeuger.
DE2126226C3 (de) Wärmeaustauscher
EP0045491B1 (fr) Poêle pour chauffer des petits locaux
EP0123994A1 (fr) Chaudière à condensation avec un élément échangeur de chaleur en zig-zag
EP0148495B1 (fr) Radiateur multivalent pour le chauffage de locaux
DE2924460A1 (de) Vorrichtung zum konzentrieren und/oder reinigen von mineralsaeuren
EP0618410A2 (fr) Echangeur de chaleur pour chaudière à condensation
DE2825704A1 (de) Gasheizkessel
DE1613759C3 (de) Kühlvorrichtung für Transformatoren
DE3108504C2 (de) Feuerungseinsatz
DE2245261C3 (de) Lenkwandanordnung in einem Ausbrenn- oder Feuerraum eines Wärmetauschers
DE3108452C2 (de) Öl/Gas-Heizkessel
AT18222B (de) Umplaufrohr.
DE3534822A1 (de) Glasrohrwaermetauscher
DE3431343A1 (de) Tauchheizflaechen fuer eine wirbelschichtfeuerung
DE3341974A1 (de) Warmluftspender
DE1264672B (de) Aus mehreren Stufen aufgebauter Regenerativ-Waermetauscher
DE2245261A1 (de) Lenkwandanordnung in einem ausbrennoder feuerraum eines waermetauschers

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19910806

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LI LU NL

17Q First examination report despatched

Effective date: 19930824

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI LU NL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 19940302

Ref country code: FR

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19940302

Ref country code: GB

Effective date: 19940302

Ref country code: BE

Effective date: 19940302

Ref country code: NL

Effective date: 19940302

REF Corresponds to:

Ref document number: 102333

Country of ref document: AT

Date of ref document: 19940315

Kind code of ref document: T

REF Corresponds to:

Ref document number: 59101086

Country of ref document: DE

Date of ref document: 19940407

EN Fr: translation not filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19940803

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19940831

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19940831

Ref country code: CH

Effective date: 19940831

GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19940302

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19950126

Year of fee payment: 4

26N No opposition filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19960501