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EP0042129A2 - Echangeur de chaleur de gaz d'échappement - Google Patents

Echangeur de chaleur de gaz d'échappement Download PDF

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Publication number
EP0042129A2
EP0042129A2 EP81104401A EP81104401A EP0042129A2 EP 0042129 A2 EP0042129 A2 EP 0042129A2 EP 81104401 A EP81104401 A EP 81104401A EP 81104401 A EP81104401 A EP 81104401A EP 0042129 A2 EP0042129 A2 EP 0042129A2
Authority
EP
European Patent Office
Prior art keywords
exhaust gas
heat exchanger
gas heat
exhaust
inlet
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
EP81104401A
Other languages
German (de)
English (en)
Other versions
EP0042129A3 (en
EP0042129B1 (fr
Inventor
Jürgen Dr. Tenhumberg
Reinhold Kehl
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.)
Vaillant Austria GmbH
Cofrabel NV
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
Vaillant-Schonewelle BV
Original Assignee
Vaillant Austria GmbH
Cofrabel NV
Joh Vaillant GmbH and Co
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
Schonewelle BV
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 Vaillant Austria GmbH, Cofrabel NV, Joh Vaillant GmbH and Co, Vaillant GmbH, Vaillant SARL, Vaillant Ltd, Schonewelle BV filed Critical Vaillant Austria GmbH
Priority to AT81104401T priority Critical patent/ATE8178T1/de
Publication of EP0042129A2 publication Critical patent/EP0042129A2/fr
Publication of EP0042129A3 publication Critical patent/EP0042129A3/de
Application granted granted Critical
Publication of EP0042129B1 publication Critical patent/EP0042129B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • F28D21/0005—Recuperative heat exchangers the heat being recuperated from exhaust gases for domestic or space-heating systems
    • F28D21/0007—Water heaters

Definitions

  • the present invention relates to an exhaust gas heat exchanger according to the preamble of the main claim.
  • Such a heat exchanger has become known through Buijserd and Vrij "Heat recovery from combustion gases on household gas appliances" GWF 120 (1979) 11, page 545 ff.
  • Such exhaust gas heat exchangers are either mounted above the boiler or placed directly on the boiler. The exhaust gas flow is redirected 8 times, and the cooled exhaust gas is passed behind the exhaust gas heat exchanger through the still hot exhaust gas in front of the heat exchanger.
  • these incompatibilities result in poor efficiency of the exhaust gas heat exchanger and, on the other hand, ei ne re-routing of the exhaust pipe, since such exhaust gas heat exchangers can hardly be inserted into an existing exhaust pipe system.
  • the fan for extracting the cooled exhaust gases from the exhaust gas heat exchanger is attached to a relatively deep point in the line routing, which results in difficulties in keeping the fan dry and thus free of corrosion.
  • the present invention is therefore based on the object to provide an exhaust gas heat exchanger, the inlet and outlet are arranged such that it can be installed in an existing exhaust duct of a boiler, circulating water heater, combi water heater or furnace, which works with an optimal efficiency and in which post-heating of the exhaust gas leaving the heat exchanger is possible.
  • the exhaust gas heat exchanger according to FIG. 1 is an integrated device which is provided with an inlet 1 at the bottom and an outlet 2 at the top, the center axes of which are aligned with one another, for installation in a vertical exhaust gas line and which is fastened to a set-up wall as a separate unit by means of fastening elements 3 and 4 can be.
  • the exhaust gas heat exchanger is essentially made of sheet metal parts 5, in the area of the inlet 1, ie upstream, of the actual heat exchanger body 6, the outer walls, its underside and side walls are provided with thermal insulation 7. While inlet 1 and outlet 2 can be connected to one another via a vertical channel 8 in the sense of a bypass channel, a heat exchanger inlet opening 9 branches off from the channel 8 on the underside and a heat exchanger outlet opening 10 on the top near the outlet.
  • the heat exchanger inlet opening 9 can be completely or partially closed by a deflection flap 11, the pivot point of which is provided at 12. It is provided that the position of the flap 11 is adjusted by a heat sensor that senses the temperature of the exhaust gas at the height of the outlet 2 len. This can ensure that a certain temperature of the exhaust gas in the outlet, which is dependent on the dew point, is not fallen below, in order to avoid the condensation of the exhaust gas in the chimney.
  • the actual heat exchanger body 6 is provided above the interior 16 arranged laterally next to the channel 8.
  • the heat exchanger body 6 is thermally insulated on all sides either by the insulation or by the hollow wall from surrounding parts and the atmosphere.
  • the heat exchanger body 6 is connected to a supply and return line of a heating system, not shown.
  • Extending above the heat exchanger body 6 is an outlet space which merges into a central constriction 18 in which an impeller 19 of a fan 20 is arranged, which is driven by a motor 21.
  • a line 22 branches off radially from the fan 20 and leads to the outlet openings 10.
  • the fins 13 or a protruding edge 23 in the course of the hollow wall 17 serve as discharge moldings for condensate dripping from the heat exchanger body 6. This condensate collects at the lowest point of the sheet metal housing 5, where it is discharged to the outside from a line 24.
  • the exhaust gas heat exchanger according to FIG. 2 is a so-called add-on device which can be attached and attached to an existing heating boiler by means of feet 30.
  • Inlet 1 and outlet 2 are aligned. Seen from the inlet, an inlet space 16 is adjoined by the lateral inlet duct 15, the outer walls of which are provided with the thermal insulation 7, which takes place laterally with respect to the outside atmosphere and with respect to the heat exchanger body 6.
  • the inlet duct 15 merges into a further space 31, to which the heat exchanger body 6 is directly connected, which is also protected on all sides by the insulation 7 from the surrounding spaces.
  • the space 31 is shielded from the outlet 2 by a beam wall 33 provided with bores 32.
  • the outlet space 34 Downstream of the heat exchanger body, the outlet space 34 is provided, which is provided with the insulation 7 already mentioned in the direction of the inlet 1 to the exhaust gas heat exchanger.
  • the outlet space 34 is connected to the outlet 2 via an outlet channel 35, the outlet channel 35 is in turn connected to the heat exchanger body via insulation 7, but is not insulated from the atmosphere, only by the sheet metal wall 5.
  • the impeller 19 is provided above the jet wall 33, the motor of which is not shown.
  • the outlet of the blower is directly connected to the outlet 2.
  • the bypass channel 8 is absent.
  • the entire exhaust gas that comes from the heat source must pass through the heat exchanger element 6.
  • the fan with fan is arranged at the highest point of the heat exchanger; in the exemplary embodiment according to FIG. Two, the fan is also heated via the jet wall 33 or by hot exhaust gas escaping there, so that the fan always runs under dry conditions, so that signs of corrosion are largely avoided.
  • inlet and outlet openings 1 and 2 are aligned, so that both exhaust gas heat exchangers can easily be inserted into existing exhaust pipes by separating a correspondingly long piece from the exhaust pipes.
  • Both exemplary embodiments have the advantage over the prior art that line crossings are avoided, so that an optimal efficiency is largely achieved without undesirably cooled exhaust gas being heated up again behind the heat exchanger. It is possible to design the two devices according to FIGS. One and two both as wall-mounted devices without a chimney connection, that is to say with exhaust gas discharge directly through the fastening wall, and as attachment devices on the existing heat source. Furthermore, in particular in the exemplary embodiment according to FIG. 2, it is possible to add tertiary air from the installation space to the exhaust gas, for example via a nozzle 37. This air could also come from the outside atmosphere men.
  • the space 34 in the embodiment of Figure two is designed so that the bottom floor forms a groove 38 in which dripping condensate collects and can be discharged to the outside via a line. This ensures that the condensate can precipitate without exposure to hot, fresh exhaust gas.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chimneys And Flues (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Separation By Low-Temperature Treatments (AREA)
EP81104401A 1980-06-12 1981-06-06 Echangeur de chaleur de gaz d'échappement Expired EP0042129B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81104401T ATE8178T1 (de) 1980-06-12 1981-06-06 Abgaswaermetauscher.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8015581U 1980-06-12
DE19808015581U DE8015581U1 (de) 1980-06-12 1980-06-12 Abgaswaermetauscher

Publications (3)

Publication Number Publication Date
EP0042129A2 true EP0042129A2 (fr) 1981-12-23
EP0042129A3 EP0042129A3 (en) 1982-08-25
EP0042129B1 EP0042129B1 (fr) 1984-06-27

Family

ID=6716208

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81104401A Expired EP0042129B1 (fr) 1980-06-12 1981-06-06 Echangeur de chaleur de gaz d'échappement

Country Status (3)

Country Link
EP (1) EP0042129B1 (fr)
AT (1) ATE8178T1 (fr)
DE (2) DE8015581U1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0078207A3 (fr) * 1981-10-22 1983-06-29 Chaffoteaux & Maury Perfectionnements aux dispositifs pour récupérer des calories des fumées sortant des chaudières à gaz
FR2532041A2 (fr) * 1982-08-20 1984-02-24 Chaffoteaux Et Maury Perfectionnements aux dispositifs pour recuperer des calories des fumees sortant des chaudieres a gaz
FR2581171A1 (fr) * 1985-04-25 1986-10-31 Girard Bernard Dispositif de recuperation de calories dans un conduit de fumees
EP0236607A1 (fr) * 1986-03-11 1987-09-16 Merrill K. Gordon Récupérateur de chaleur et méthode pour récupérer la chaleur
CN110285702A (zh) * 2019-06-15 2019-09-27 大唐郓城发电有限公司 一种火力发电厂余热回收装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103820167A (zh) * 2012-11-16 2014-05-28 航天长征化学工程股份有限公司 一种气化炉合成气出口装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3813039A (en) * 1973-03-26 1974-05-28 G Wells Heat exchanger
US4011904A (en) * 1974-04-02 1977-03-15 Hope Henry F Combination heat exchanger and blower
US3913663A (en) * 1974-05-03 1975-10-21 Jack R Gates Energy conservation chamber
US4079888A (en) * 1975-04-18 1978-03-21 Briscoe Harry H Heat recovery system for forced air furnaces
NL7612508A (en) * 1976-11-10 1978-05-12 Veg Gasinstituut Nv Gas heating operating system - uses heat exchanger cooling combustion gases below dew point and has reheating layout
FR2426233A1 (fr) * 1978-05-20 1979-12-14 Vaillant Sarl Source de chaleur a combustible comportant un echangeur de chaleur chauffe par les gaz de combustion
NL7908295A (nl) * 1978-12-18 1980-06-20 Sevelen Metallbau Vermogengestuurd inbouwelement met warmtewisselaar.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0078207A3 (fr) * 1981-10-22 1983-06-29 Chaffoteaux & Maury Perfectionnements aux dispositifs pour récupérer des calories des fumées sortant des chaudières à gaz
FR2532041A2 (fr) * 1982-08-20 1984-02-24 Chaffoteaux Et Maury Perfectionnements aux dispositifs pour recuperer des calories des fumees sortant des chaudieres a gaz
FR2581171A1 (fr) * 1985-04-25 1986-10-31 Girard Bernard Dispositif de recuperation de calories dans un conduit de fumees
EP0236607A1 (fr) * 1986-03-11 1987-09-16 Merrill K. Gordon Récupérateur de chaleur et méthode pour récupérer la chaleur
CN110285702A (zh) * 2019-06-15 2019-09-27 大唐郓城发电有限公司 一种火力发电厂余热回收装置

Also Published As

Publication number Publication date
DE8015581U1 (de) 1982-01-28
EP0042129A3 (en) 1982-08-25
EP0042129B1 (fr) 1984-06-27
ATE8178T1 (de) 1984-07-15
DE3164413D1 (en) 1984-08-02

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