EP0230789A2 - Wärmetauscheinrichtung - Google Patents

Wärmetauscheinrichtung Download PDF

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Publication number
EP0230789A2
EP0230789A2 EP86310174A EP86310174A EP0230789A2 EP 0230789 A2 EP0230789 A2 EP 0230789A2 EP 86310174 A EP86310174 A EP 86310174A EP 86310174 A EP86310174 A EP 86310174A EP 0230789 A2 EP0230789 A2 EP 0230789A2
Authority
EP
European Patent Office
Prior art keywords
heat exchange
exchange apparatus
baffle means
wall
hot gases
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.)
Withdrawn
Application number
EP86310174A
Other languages
English (en)
French (fr)
Other versions
EP0230789A3 (de
Inventor
Martin Anthony Neligan
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0230789A2 publication Critical patent/EP0230789A2/de
Publication of EP0230789A3 publication Critical patent/EP0230789A3/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B1/00—Stoves or ranges
    • F24B1/18—Stoves with open fires, e.g. fireplaces
    • F24B1/183—Stoves with open fires, e.g. fireplaces with additional provisions for heating water
    • 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
    • F24H1/26—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 forming an integral body
    • F24H1/28—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 forming an integral body including one or more furnace or fire tubes
    • 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
    • F24H2230/00—Solid fuel fired boiler

Definitions

  • This invention relates to heat exchange apparatus.
  • heat exchange apparatus Various types of heat exchange apparatus are known.
  • one form of known heat exchange apparatus which includes a combustion chamber is known as a wrap-around back boiler.
  • Recently designed wrap-around back boilers are sometimes referred to as easy-to -clean back boilers.
  • this invention provides heat exchange apparatus comprising a housing, a chamber in the housing through which hot gases flow in use of the heat exchange apparatus, and a heat exchange wall which is positioned in the chamber and which has a plurality of corrugations defining ridges and troughs over which the hot gases flow in order to increase the surface area in the chamber for heat exchange purposes.
  • the heat exchange wall with its corrugations enables the efficient heat transfer of heat as it passes through the heat exchange apparatus. This is because the ridges and troughs present an increased surface area over a straight wall and this increased surface area is available for heat exchange purposes.
  • the heat exchange wall with its corrugations is also such that it is able to be relatively easily cleaned.
  • the corrugations in the heat exchange wall may be V-shaped, U-shaped or rectangular in cross section. Other shaped corrugations may also be employed.
  • the heat exchange wall is preferably formed as a rear wall of the housing. Such a construction facilitates easy cleaning of the heat exchange apparatus.
  • the heat exchange wall may be made from a single sheet of metal.
  • the single sheet of metal may be bent or formed to produce the required corrugations.
  • the corrugations are advantageous from the ease of cleaning aspect in that substantially all of the wall is able to be seen so that cleaning can be carried out more easily and . more efficiently than with other types of configuration.
  • welded seams may be employed that are substantially entirely-visible from both the front and the back of the heat exchange apparatus. This means that the joints to form the welded seams can be welded on both sides which greatly reduces any possibility of gas leakage from within the heat exchange apparatus.
  • the heat exchange apparatus includes baffle means for fitting into the corrugations of the heat exchange wall to restrict the flow of the hot gas through the chamber.
  • the provision of the baffle means may greatly improve the heat exchange efficiency of the heat exchange apparatus.
  • the baffle means acts as an inducer to induce the greater heat efficiency.
  • the baffle means may be a fixed baffle means. However, preferably, the baffle means is a movable baffle means which can be moved from a closed position in which substantially all the hot gases are restricted from flowing over the heat exchange wall, to an open position in which substantially all the hot gases are caused to flow over the heat exchange wall.
  • the movable baffle means can be moved - by sliding it backwards and forwards and it can be slid to any desired position between its fully closed position and its fully open position.
  • the baffle means When the baffle means is in a partially open position, it is able to restrict the amount of combusted hot gases that can flow upwardly through the heat exchange apparatus and, in so doing, it restricts the amount of the gases in contact with the heat exchange wall. The heat is thus extracted only from the hot gases that are in direct contact with the heat exchange wall.
  • baffle means With the baffle means in the closed position, all the hot gases are restricted from flowing upwards through the heat exchange apparatus and thus from making contact with any boiler that may be present in the heat exchange apparatus. In this case, the baffle means would only be used in the closed position when hot water was not required but when radiant heat was required.
  • the baffle means in the open position With the baffle means in the open position, the maximum amount of hot gases are allowed to flow through the heat exchange apparatus and more specifically between the baffle means and the heat exchange wall.
  • the baffle means in the open position will reduce the temperature of combustion since, as the baffle means is adjusted inwardly, the passage defined between the heat exchange wall and the baffle means will become more and more restricted, thereby allowing a smaller amount of hot gas to flow therethrough. This will cause the hot gases to flow faster and this will in turn cause more vigorous combustion with a resultant increase in temperature. This makes combustion more efficient, as at the higher temperature, more of the gases are burnt. This in turn reduces polution.
  • the baffle means comprises a plurality of plate devices that slide between the ridges and into the troughs of the corrugations of the heat exchange wall.
  • the baffle means moves towards a closed position, the more it restricts the flow of hot gases that can pass through the passage defined by the heat exchange wall on the one hand and the baffle means on the other hand.
  • baffle means is a fixed baffle means, it may be arranged such that it can be removed during cleaning but, between cleaning periods, it will be fixed in a desired position able to give the best desired results.
  • the baffle means may be made in one_piece or it may be made up of several parts in order to facilitate removal and subsequent cleaning.
  • the heat exchange apparatus may have one or more hatches or doors for allowing removal of the baffle means for cleaning purposes.
  • the baffle means may be carried between side walls by lugs, brackets or channels fixed in position, for example by welding or other means.
  • the baffle means can be twin walled to hold water. Water inlets and outlets may be provided to extend beyond the thickness of the side walls and the main heat exchange apparatus.
  • the side walls may have a cut out to accommodate the extended water inlets and outlets, and connection to the water inlets and outlets may be by means of a flexible hose. This may be advantageous in helping to reduce the size of the heat exchange apparatus.
  • the heat exchange apparatus may include a combustion chamber.
  • the combustion chamber may be provided in close physical contact with the heat exchange wall.
  • the combustion chamber can be placed at a remote location with respect to the heat exchange wall.
  • the combustion chamber may be placed in a different room to that in which the heat exchange wall is located.
  • the heat exchange wall can be placed in an adjacent room behind a room that contains the combustion unit.
  • the heat exchange wall can be placed in a room above a room containing the combustion chamber, or it may even be placed in a roof space. All that is required to connect the combustion chamber to the heat exchange wall is an appropriate flue. This offers a considerable advantage to users of traditional fireplaces in which radiant heat is the only heat transfer and in which the traditional fireplaces are required to remain without losing any of their efficiency. For such an arrangement, a simple unit can be inserted into the flue in order to transfer the combustion gases to the heat exchange wall.
  • the heat-exchange apparatus of the present invention may include a fan.
  • the fan may be used to improve operating efficiency of the heat exchange apparatus.
  • the baffle means may be formed as a unit which is substantially identical to the heat exchange wall.
  • the baffle means can be fabricated in double hollow skinned steel so that, when it is pushed forward towards it closed position, its projections and recesses fit into complementary recesses and projections on the heat exchange wall.
  • water connections may be provided by means of flexible hoses.
  • the heat exchange apparatus may also include plate means which is positioned outside the baffle means and which is for increasing radiant heat.
  • the plate means may be placed at a distance away from a plate of the baffle means in order to allow combustion gases to flow upwards on the outside of the plate of the baffle means, whereupon at the top, the hot gases are drawn downwards to flow between the plate of the baffle means and . the said plate means which is positioned outside the baffle means.
  • heat exchange apparatus 2 comprising a housing 4, a chamber 6 in the housing 4 through which hot gases flow in use of the heat exchange apparatus 2, and a heat exchange wall 8.
  • the heat exchange wall 8 is positioned in the chamber 6 and it has a plurality of corrugations 10 defining ridges 12 and troughs 14. Hot gases flow over the ridges 12 and the troughs 14 in order to increase the surface area in the chamber 6 for heat exchange purposes.
  • the corrugations 10 are generally V-shaped in cross section.
  • the heat exchange wall 8 is formed as a rear wall of the housing 4. In fact the heat exchange wall 8 lies adjacent a rear wall 16 of the housing 4 so that the heat exchange wall 8 forms a secondary or inner rear wall of the housing 4.
  • the heat exchange wall 8 is made from a single sheet of metal which is bent to produce the corrugations 10.
  • the heat exchange apparatus 2 shown in Figure 1 includes baffle means 18 for fitting as shown into the corrugations 10 of the heat exchange wall 8 to restrict the flow of the hot gases through the chamber 4.
  • the baffle means 18 acts as an inducer and is effective for improving heat exchange efficiency and general operation of the heat exchange apparatus 2.
  • the baffle means 18 is a movable baffle means which can be moved from a closed position in which substantially all the hot gases are restricted from flowing over the heat exchange wall 8, to an open position in which substantially all the hot gases are caused to flow over the heat exchange wall 8.
  • Figure 1 shows the baffle means in a nearly closed position.
  • the baffle means 18 is made as a one piece unit which comprises a back plate 20 from which a series of plates 22 project.
  • the plates 22 extend into the troughs 14 as shown.
  • the plates 22 thus define a passage 24 between themselves and the heat exchange wall 8 through which the hot gases in the chamber 6 can be canstrained to pass.
  • the heat exchange apparatus 2 may include a fan (not shown) for increasing movement of hot gases.
  • Figure 2 shows mainly the baffle means 18 being removed for enabling a cleaning operation to be effected.
  • the precise shape of the corrugations 10 enables virtually the entire surface of the heat exchange wall 8 to be seen and easily to be cleaned.
  • Figure 2 also shows the chamber 6 provided with a bottom wall 26.
  • heat exchange apparatus 2 in the form of an oil fired central heating boiler.
  • the heart of the boiler is provided by the heat exchange apparatus shown in Figure 3.
  • the boiler is provided with a front door 28 and a flue pipe 30.
  • a flame 32 is provided in the chamber 6 so that the chamber 6 in Figure 4 may be regarded as a combustion chamber.
  • the gas required for the flame 32 is provided via feed apparatus 34 which may include appropriate valves and fans.
  • the housing 4 is mounted on legs 36.
  • heat exchange apparatus 2 in the form of a flue pipe heat exchange unit.
  • the flue pipe heat exchange unit has an inlet flue pipe 38 and an outlet flue pipe 40.
  • FIG. 6 there is shown heat exchange apparatus somewhat similar to Figure 1 except that the baffle means 18 has a vertical back plate 20 so that the plates 22 are all of the same size.
  • the housing 4 has a front door 28 and the chamber 6 is fed with hot gases from a vertical pipe 42.
  • the gases pass up the pipe 42 through an inlet pipe 44, through the passage 24 and out through an outlet pipe 46.
  • FIG. 7 shows heat exchange apparatus 2 in the form of a back boiler.
  • Plate means in the form of a vent plate 48 is provided outside the baffle means 18 as shown and spaced apart from the back plate 20.
  • the bent plate 48 and the back plate 20 combine to define a passage 50.
  • the passage 50 extends into a passage 52 which is defined between the bent plate 48 and the lowermost plate 22.
  • the passage 52 then extends into the passage 24 defined between the plates 22 and the corrugations 10.
  • the chamber 6 can be provided with a coal, wood or gas operated fire 54. Hot gases from the fire 54 pass in the direction of the illustrated arrows and out through an outlet 56 in the top of the housing 4 as shown.
  • the fire 54 rests on the bottom wall 26 which forms a grate.
  • FIGs 8 and 9 show heat exchange apparatus 2 in the form of double faced back boilers. As can be seen, two baffle means 18 are employed. The hot gases pass out through an outlet flue pipe 58. It is sometimes desirable to have one fireplace or chamber arrangement as shown in Figures 8 and 9.
  • the bottom wall 26 forms a fire basket as shown which can be arranged to slide or otherwise move on a hearth 60 from one room to another. As the fire basket is slid backwards and forwards, it will locate in appropriate closed positions in a channel or similar device. As the combustion gases rise to the top of the heat exchange wall 8 as shown, they are drawn back down through the heat exchange apparatus, as shown by the arrows, and returned up the other side, also as shown by the arrows.
  • the heat exchange apparatus shown in Figures 8 and 9 is effective to shed heat on both sides of the heat exchange wall 8. This is a particularly efficient construction.
  • heat exchange apparatus 2 from various angles.
  • the heat exchange wall that is used is shown in Figure 11 and it may be formed from a pipe of the correct diameter that is pressed almost flat as shown or that is pressed out of shape to almost closed or meeting, The pipe is then bent to the illustrated shape.
  • the arrangement is of advantage as it can be built into, or between, brickwork.
  • Figures 10,12 and 13 illustrate by means of the arrows, how the combustion gases are drawn from the fire 54 and through the apparatus, the combustion gases then passing underneath the fire 54 itself to be reburnt as they pass through the combustion zone.
  • the baffle means 18 has been removed.
  • the heat exchange apparatus 2 shown in Figures 10,11,12 and 13 may be most efficient in a closed unit-such for example as a stove or a room heater.
  • FIG 14 shows the heat exchange wall 8 of Figure 11 based in a housing 4 having a door 62.
  • the baffle means 18 is illustrated positioned between the corrugations 10 of the heat exchange wall 8.
  • Figure 15 shows an arrangement somewhat similar to Figure 14 but with two doors 62,64.
  • the heat exchange wall 8 is effective on both sides so that there is a doubling up of heat.
  • Two baffle-means 18 are also employed as shown.
  • the hot gases are induced through one side of the unit and down the other side.
  • the reverse arrangement can however be employed.
  • heat exchange apparatus 2 all the various designs of the heat exchange apparatus 2 are such that they are able relatively easily to be cleaned.
  • the - heat exchange walls 8 are in particular relatively easily cleaned and their entire surface area that faces outwardly is substantially visible rendering it that much easier to clean.
  • the use of the heat exchange walls 8 also provide good efficiency in the transfer of heat.
  • the heat exchange apparatus may include components and parts that are usual and of standard design for known types of heat exchange apparatus. Such known components and parts will not affect the operation of the heat exchange apparatus according to the present invention.
  • the exchange apparatus may be used for hot air systems.
  • the heat exchange apparatus may also be used for heat recovery, where steam and fat for example, would be passing through the heat exchange apparatus from a kitchen or similar environment where air is extracted and is laden with smoke, steam, fat and the like.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Drying Of Solid Materials (AREA)
EP86310174A 1986-01-07 1986-12-29 Wärmetauscheinrichtung Withdrawn EP0230789A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IE3186A IE860031L (en) 1986-01-07 1986-01-07 Heat exchange apparatus
IE3186 1986-01-07

Publications (2)

Publication Number Publication Date
EP0230789A2 true EP0230789A2 (de) 1987-08-05
EP0230789A3 EP0230789A3 (de) 1988-10-19

Family

ID=11005613

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86310174A Withdrawn EP0230789A3 (de) 1986-01-07 1986-12-29 Wärmetauscheinrichtung

Country Status (3)

Country Link
EP (1) EP0230789A3 (de)
GB (1) GB2185095B (de)
IE (1) IE860031L (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010070275A2 (en) * 2008-12-15 2010-06-24 Graham Thornhill A fuel-burning stove
EP2735812A3 (de) * 2012-11-26 2016-09-07 Vaillant GmbH Heizkessel

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9208509D0 (en) * 1992-04-16 1992-06-03 Labgas Res Lab Ltd Heat exchanger
ITCS20070034A1 (it) 2007-07-12 2009-01-13 Ungaro S R L Scambiatore di calore per termocaldaia

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB626987A (en) * 1947-02-03 1949-07-25 Gas Light & Coke Co Improvements in or relating to solid fuel fired heating appliances and to back boilers for use therewith
US2894493A (en) * 1956-06-07 1959-07-14 Leonardis Michael J De Device for heating a heat transfer medium
FR1399126A (fr) * 1964-06-17 1965-05-14 Chaudière pour production d'eau chaude
DE2852152A1 (de) * 1977-12-02 1979-06-07 American Standard Inc Einsatz fuer offene kamine
DE7936060U1 (de) * 1979-12-21 1980-04-17 Tekon Fiegenbaum U. Koenig Gmbh & Co Kg, 4428 Rosendahl Heizungskessel fuer einen offenen kamin
EP0043318A1 (de) * 1980-06-26 1982-01-06 Marcel Humbert Thermostatische Temperaturreguliereinrichtung einer Wasserheizung für offene Kamine
GB2159257A (en) * 1984-05-23 1985-11-27 Gerard Peter Nolaska Crosse Improvements in domestic water heaters

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB366783A (en) * 1930-03-22 1932-02-11 Alfred Westelius Improvements in and relating to apparatus for producing hot water for hot water heating installations and the like
GB362937A (en) * 1930-09-08 1931-12-08 Jean Victor Henri Besson Improvements relating to water heaters
GB1296344A (de) * 1970-01-26 1972-11-15
EP0123994A1 (de) * 1983-04-28 1984-11-07 Etablissement Agura Kondensatheizkessel mit einem mäanderförmigen Wärmeaustauschteil
IE55529B1 (en) * 1984-09-13 1990-10-10 Sullivan Richard J Domestic back boiler

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB626987A (en) * 1947-02-03 1949-07-25 Gas Light & Coke Co Improvements in or relating to solid fuel fired heating appliances and to back boilers for use therewith
US2894493A (en) * 1956-06-07 1959-07-14 Leonardis Michael J De Device for heating a heat transfer medium
FR1399126A (fr) * 1964-06-17 1965-05-14 Chaudière pour production d'eau chaude
DE2852152A1 (de) * 1977-12-02 1979-06-07 American Standard Inc Einsatz fuer offene kamine
DE7936060U1 (de) * 1979-12-21 1980-04-17 Tekon Fiegenbaum U. Koenig Gmbh & Co Kg, 4428 Rosendahl Heizungskessel fuer einen offenen kamin
EP0043318A1 (de) * 1980-06-26 1982-01-06 Marcel Humbert Thermostatische Temperaturreguliereinrichtung einer Wasserheizung für offene Kamine
GB2159257A (en) * 1984-05-23 1985-11-27 Gerard Peter Nolaska Crosse Improvements in domestic water heaters

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010070275A2 (en) * 2008-12-15 2010-06-24 Graham Thornhill A fuel-burning stove
WO2010070275A3 (en) * 2008-12-15 2011-01-06 Graham Thornhill A fuel-burning stove
GB2478889A (en) * 2008-12-15 2011-09-21 Graham Thornhill A fuel-burning stove
GB2478889B (en) * 2008-12-15 2013-09-25 Graham Thornhill A fuel-burning stove
EP2735812A3 (de) * 2012-11-26 2016-09-07 Vaillant GmbH Heizkessel

Also Published As

Publication number Publication date
GB8630972D0 (en) 1987-02-04
IE860031L (en) 1987-07-07
GB2185095B (en) 1990-07-11
EP0230789A3 (de) 1988-10-19
GB2185095A (en) 1987-07-08

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