EP0038390A1 - Kombinierte Wärmeleit- und Wandschutzplatte zur Verwendung bei Öfen und anderen Strahlungserhitzern - Google Patents

Kombinierte Wärmeleit- und Wandschutzplatte zur Verwendung bei Öfen und anderen Strahlungserhitzern Download PDF

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Publication number
EP0038390A1
EP0038390A1 EP80301266A EP80301266A EP0038390A1 EP 0038390 A1 EP0038390 A1 EP 0038390A1 EP 80301266 A EP80301266 A EP 80301266A EP 80301266 A EP80301266 A EP 80301266A EP 0038390 A1 EP0038390 A1 EP 0038390A1
Authority
EP
European Patent Office
Prior art keywords
heat transfer
curtain
transfer panel
radiant
curtain assembly
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
EP80301266A
Other languages
English (en)
French (fr)
Other versions
EP0038390B1 (de
Inventor
Thomas T. Wilson
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.)
EPOXON PRODUCTS Inc
Original Assignee
EPOXON PRODUCTS Inc
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
Priority to CA347,805A priority Critical patent/CA1132134A/en
Priority to AU57137/80A priority patent/AU5713780A/en
Application filed by EPOXON PRODUCTS Inc filed Critical EPOXON PRODUCTS Inc
Priority to EP80301266A priority patent/EP0038390B1/de
Priority to AT80301266T priority patent/ATE8702T1/de
Priority to DE8080301266T priority patent/DE3068658D1/de
Priority to NO801141A priority patent/NO801141L/no
Priority to DK184080A priority patent/DK184080A/da
Publication of EP0038390A1 publication Critical patent/EP0038390A1/de
Application granted granted Critical
Publication of EP0038390B1 publication Critical patent/EP0038390B1/de
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/36—Protective guards, e.g. for preventing access to heated parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C1/00—Stoves or ranges in which the fuel or energy supply is not restricted to solid fuel or to a type covered by a single one of the following groups F24C3/00 - F24C9/00; Stoves or ranges in which the type of fuel or energy supply is not specified
    • F24C1/14—Radiation heating stoves and ranges, with additional provision for convection heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/06—Casings, cover lids or ornamental panels, for radiators
    • F24D19/062—Heat reflecting or insulating shields
    • 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
    • F24H9/00—Details
    • F24H9/0052—Details for air heaters

Definitions

  • This invention relates to a combination heat transfer panel and wall shield for use with stoves and other radiant heaters. Due to the limited nature of the supply of fossil fuels, it is apparent that these fuels should be reserved for areas in which they are uniquely useful and most critical. Residential and commercial space heating is not necessarily one of those areas. Thus, we have witnessed in recent years new interest in exploring alternative systems of harnessing energy for space heating; which energy can be derived economically from inexhaustible or replenishable sources. Such systems include nuclear reactors, geothermal and solar devices, windmills, ocean-wave-mills, etc.
  • radiant heaters are most effective when installed in the middle of a room, the vast majority of installations are not of this type and mainly for aesthetic or practical reasons, the heaters are placed as close as possible to walls or corners.
  • One negative effect of this type of installation is that a significant portion of the heat which is radiated from the rear of the stove is absorbed by the back wall and perhaps lost to the outdoors.
  • Some manufacturers design their stoves with steel baffles attached to the rear of their units in order to minimize the amount of radiant heat produced there. Although reduced clearances can be achieved in this manner, it is clear that such a baffled unit produces less total heat than does an unbaffled stove and thus runs counter to the aim of extracting a maximum amount of heat from a given amount of fuel.
  • Prior art directed toward distance reduction for radiant heaters has for the most part been restricted to specified procedures of field masonry. For example, brick walls are constructed with carefully maintained air spaces behind them to insure a free flow of cool air along the back side.
  • One drawback to this method is the cost involved - in some cases additional footings are required to carry the load of the additional masonry. In many instances such footings are not feasible.
  • Another method of distance reduction involves the use of prefabricated steel wall panels and hollow sheet metal pans filled with insulation. Whether or not this method of wall protection is truly effective'from a safety point of view, these panels do suffer from the aesthetic standpoint.
  • the invention consists in a combination heat transfer panel and wall shield for use with non-solar radiant heaters and consisting of a case adapted for location either directly against, or in spaced relation to, a structural wall behind a radiant heater characterised in that it comprises a base, a header, and side panels, the front of the case facing the heater having an opening to permit entrance of radiant heat within the case, a first curtain assembly mounted across the front opening of the case, a second curtain assembly mounted a spaced distance behind and substantially parallel to the first curtain assembly, thereby defining a convection chamber between the first and second curtain assemblies, a cold air. inlet communicating with the lower end or with the sides of the convection chamber, and a hot air exhaust communicating with the upper end of the convection chamber.
  • the invention thus has the advantages of providing a convenient, aesthetically pleasing, and functional protective covering for combustible walls, when these walls are exposed to sources of high radiant heat.
  • another primary function is to provide an effective means of utilizing heat energy from a radiant heat source and redirecting or converting it in such a manner that it proves most useful for the purpose of heating space.
  • Another important function of the device described herein is that of utilizing heat that normally is absorbed and lost by the walls located directly behind radiant heaters.
  • the invention provides a combination heat transfer panel and wall shield for use with stoves and other radiant heaters which is simple in construction, efficient in operation, low in cost, easily maintained, and attractive in appearance.
  • the hereindescribed combination heat transfer panel and wall shield is adapted for use with non-solar radiant heaters such as wood and coal burning stoves and fireplaces; as well as oil, kerosene and alcohol burning heaters and electric heaters. It is designed particularly for use with wood and coal burning stoves.
  • the device is adapted for placement directly against a structural wall 10, which it shields, and behind a stove or other radiant heater (not illustrated) located nearby on the side opposite the wall.
  • the device is housed in a case comprising a base 12, a pair of upstanding side walls 14 and a header 16. These structural elements are fastened to each other by means of bolts, welding, or other suitable securing means.
  • the back of the case preferably has a large opening 18 to conserve material.
  • the front of the case has a large central opening 20 which faces the radiant heater and admits radiant heat to the interior of the device.
  • heater 16 has the general contour of the letter G, arranged face down. It may be formed integrally from a single sheet of bent sheet metal. It comprises a short back wall segment 22, a top segment 24, a front wall segment 26, and a reversely bent inner segment 28, 28a. The floor 28a of the reversely bent segment is provided with opening 30 the purpose of which will appear later. Front segment 26 is provided with a long opening 32. This serves as a hot air exhaust vent for the assembly.
  • the case above described houses two spaced curtain assemblies arranged parallel to each other in the plane of the case.
  • the first curtain assembly indicated generally at 34, is toward the front and serves the primary function of controlling the admission of radiant energy into the interior of the case.
  • the second curtain assembly indicated generally at 36, serves the primary purpose of providing a heat shield to protect wall 10.
  • Both curtain assemblies serve the further purpose of directing the flow of heat trapped and/or generated by the apparatus out of hot air exhaust vent 32.
  • the two curtain assemblies are spaced from each other and from the structural wall in such a manner as to provide a first, or outer, convection chamber 38 and a second, or inner, convection chamber 40.
  • structural wall 10 itself provides one of the defining surfaces for inner convection chamber 40.
  • the first or outer curtain assembly 34 preferably comprises a plurality of vertically or horizontally arranged louvres which preferably are arcuate in contour and which preferably are components of the venetian blind sub-assembly illustrated in Fig. 3.
  • the construction of the venetian blind sub-assembly is substantially conventional. It comprises a plurality of vertical, ladder-shaped straps 42 made of fibreglass threads or other flexible, non-combustible material.
  • the straps support a plurality of horizontally arranged louvres 44, and a base rail 46 in the-usual manner.
  • Straps 42 are supported on rollers 48 which in turn are fixed at spaced intervals to a shaft 50.
  • the shaft in turn is supported rotatably on brackets 52 mounted on the floor 28a of the reversely bent terminal segment of the G-shaped header 16.
  • the louvres 44 may be shifted between a first position in which one of their faces is toward the front, a second position in which the other of their faces is toward the front, or to any intermediate position. This makes it possible to adjust the curtain so that it either absorbs the radiant energy entering through.opening 20 or reflects it back to the exterior.
  • the venetian blind assembly may be positioned and spaced by means of the wire clips spacers indicated generally at 54 and illustrated particularly in Figs. 1 and 3. They include a central, reversely bent central segment 56 which is secured to the adjacent side wall 14 by means of bolts 58. A bent anchoring segment 60 penetrates the adjacent end of rail 46. The opposite terminal portion 62 extends downwardly and abuts against the inner front of the case, thereby insuring a properly spaced relation between the outer curtain assembly 34 and the inner curtain assembly 40.
  • the curtain comprises a sheet 66, which is preferably a corrugated sheet of highly heat conductive aluminum or other incombustible material.
  • a corrugated sheet is preferred because of its increased surface area, because it can be rolled up for packaging, and because of its increased rigidity and strength.
  • curtain 66 terminates at its upper end short of header 16 and at its lower end short of base 12. There thus is provided a passageway which is a continuation of cold air inlet 64 at the bottom of the curtain and another passageway which communicates with hot air vent 32 at the upper end of the curtain.
  • the illustrated means for hanging curtain 66 comprises a plurality of hooks 68 the upper bent ends of which are welded or otherwise affixed to the undersurface of top segment 24 of the header 16 and the lower-bent portions of which enter openings in the upper margin of curtain 66, provided for the purpose of hanging the curtain.
  • the cold air inlet is provided at the lower end of the case
  • another embodiment of the invention might provide for the introduction of cold air from the sides, either into the front convection chamber 38, or into the rear chamber 40, or into both.
  • experience indicates that either one or both curtains should extend either close to or all the way to the base 12 in order to maximize the chimney effect within the panel.
  • a back wall of aluminum foil or other similar material might be placed over the combustible structural wall 10 to provide additional protection against the hazard of fire.
  • a sheet of heat absorbent glass might be placed in front of the outer louvered curtain 34 to maximise the chimney effect of convected warm air in convection chambers 38, 40.
  • a mechanical blower might be provided to force air through the apparatus at an accelerated rate.
  • the space behind inner curtain 36 might be filled with fibreglass or other incombustible insulation.
  • louvered curtains 34 might be used, and the louvres might be arranged in either vertical or horizontal configurations.
  • the inner curtain 66 might be coated with various special coatings, for example, a selective absorbing coating which absorbs radiant heat efficiently but which does not radiate heat well, thereby absorbing heat re-radiated from front curtain 34 and from structural wall 10.
  • a selective absorbing coating which absorbs radiant heat efficiently but which does not radiate heat well, thereby absorbing heat re-radiated from front curtain 34 and from structural wall 10.
  • the heat transfer panel When mounted against a combustible structural wall 10 and screening the same from a stove or other closely juxtaposed radiant heater, the heat transfer panel receives radiant energy from the radiant heater through its front opening 20. If it is desired to reflect the heat back into the space from which it comes, louvres 44 are arranged with their convex reflective surfaces facing outwardly as shown in Fig. 3.
  • the louvres are adjusted with their concave black heat absorbing surfaces facing outwardly as shown in Fig. 5.
  • the heat energy is absorbed and transferred to the first and second convection chambers 38 and 40, respectively, where a chimney effect is established.
  • Cold air is drawn into the bottom of the unit through cold air inlet 64 and passes upwardly through convection chambers 38, 40. It exhausts from the unit through hot air vent 32.
  • either of two treatments may be used with respect to inner curtain 66.
  • the more radiant-energy-absorptive the curtain the greater will be the amount of heat transferred to the air flowing along its surface. Higher, too, however, will be the temperature of the back wall 10.
  • the more radiant-energy- reflective the curtain 66 the greater will be the amount of heat reflected away from itself and from the back wall 10. The result in this latter case will be a lower back wall temperature, but less heat transfer to the convected air.
  • Different field conditions may require different treatments to realise fully both the benefits of heat transfer and of adequate wall protection.
  • louvres 44 may be opened to various angles.
  • a minimum chimney effect in front convection chamber 38 will result from a wide open, that is horizontal, position such as is shown in Fig. 4.
  • the front of the panel may be constructed of a series of fixed louvres.
  • the fixed louvre system will by itself intensify the conduction of heat around the unit due to the irregular surfaces of the louvres and to the increased surface exposed, as compared to that provided by monolithic flat surfaces.
  • Inlet and exhaust air may be supplied and delivered in a variety of combinations through associated duct work or dampers, not illustrated, to suit the needs of the particular installation.
  • cooler room air may be introduced, circulated through the convection chambers and returned to either the same room, to an adjacent or upstairs room, or out of doors.
  • Cool outdoor air may be introduced and directed either back outdoors, into the heated room, or into an adjacent or upstairs room.
  • Adjacent room air may be introduced and circulated in like manner.
  • the unit standing closely adjacent the combustible structural wall 10 serves as a shield which prevents combustion of the wall. Accordingly, it is possible to place the stove or other radiant heater much closer to the wall than otherwise would be possible, thereby conserving a significant square footage of floor space which then may be put to a useful purpose.
EP80301266A 1980-03-17 1980-04-18 Kombinierte Wärmeleit- und Wandschutzplatte zur Verwendung bei Öfen und anderen Strahlungserhitzern Expired EP0038390B1 (de)

Priority Applications (7)

Application Number Priority Date Filing Date Title
CA347,805A CA1132134A (en) 1980-03-17 1980-03-17 Combination heat transfer panel and wall shield for use with stoves and other radiant heaters
AU57137/80A AU5713780A (en) 1980-03-17 1980-04-08 Combination heat transfer panel + wall shield
EP80301266A EP0038390B1 (de) 1980-03-17 1980-04-18 Kombinierte Wärmeleit- und Wandschutzplatte zur Verwendung bei Öfen und anderen Strahlungserhitzern
AT80301266T ATE8702T1 (de) 1980-03-17 1980-04-18 Kombinierte waermeleit- und wandschutzplatte zur verwendung bei oefen und anderen strahlungserhitzern.
DE8080301266T DE3068658D1 (en) 1980-03-17 1980-04-18 Combination heat transfer panel and wall shield for use with stoves and other radiant heaters
NO801141A NO801141L (no) 1980-03-17 1980-04-21 Anordning for varmeoverfoering og veggavskjerming til bruk i kombinasjon med ovn e.l.
DK184080A DK184080A (da) 1980-03-17 1980-04-29 Kombineret varmeoverfoeringspanel og vaegskaerm til brug i forbindelse med ovne og andre varmestraalere

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
CA347,805A CA1132134A (en) 1980-03-17 1980-03-17 Combination heat transfer panel and wall shield for use with stoves and other radiant heaters
AU57137/80A AU5713780A (en) 1980-03-17 1980-04-08 Combination heat transfer panel + wall shield
EP80301266A EP0038390B1 (de) 1980-03-17 1980-04-18 Kombinierte Wärmeleit- und Wandschutzplatte zur Verwendung bei Öfen und anderen Strahlungserhitzern
NO801141A NO801141L (no) 1980-03-17 1980-04-21 Anordning for varmeoverfoering og veggavskjerming til bruk i kombinasjon med ovn e.l.
DK184080A DK184080A (da) 1980-03-17 1980-04-29 Kombineret varmeoverfoeringspanel og vaegskaerm til brug i forbindelse med ovne og andre varmestraalere

Publications (2)

Publication Number Publication Date
EP0038390A1 true EP0038390A1 (de) 1981-10-28
EP0038390B1 EP0038390B1 (de) 1984-07-25

Family

ID=34427076

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80301266A Expired EP0038390B1 (de) 1980-03-17 1980-04-18 Kombinierte Wärmeleit- und Wandschutzplatte zur Verwendung bei Öfen und anderen Strahlungserhitzern

Country Status (7)

Country Link
EP (1) EP0038390B1 (de)
AT (1) ATE8702T1 (de)
AU (1) AU5713780A (de)
CA (1) CA1132134A (de)
DE (1) DE3068658D1 (de)
DK (1) DK184080A (de)
NO (1) NO801141L (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108623136A (zh) * 2017-03-17 2018-10-09 秦文隆 气密式连续热压成型装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2079915A6 (de) * 1970-02-17 1971-11-12 Aluminium Francais
DE2514172A1 (de) * 1974-04-08 1975-10-23 Saira Spa Sonnenwaerme-speicher
US4050443A (en) * 1975-06-27 1977-09-27 University Patents, Inc. Solar energy device and system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2079915A6 (de) * 1970-02-17 1971-11-12 Aluminium Francais
DE2514172A1 (de) * 1974-04-08 1975-10-23 Saira Spa Sonnenwaerme-speicher
US4050443A (en) * 1975-06-27 1977-09-27 University Patents, Inc. Solar energy device and system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Patents Abstracts of Japan Vol. 2, No. 36, 10 March 1978 page 7941M77 & JP - A - 52 - 151242 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108623136A (zh) * 2017-03-17 2018-10-09 秦文隆 气密式连续热压成型装置

Also Published As

Publication number Publication date
CA1132134A (en) 1982-09-21
EP0038390B1 (de) 1984-07-25
DK184080A (da) 1981-10-30
ATE8702T1 (de) 1984-08-15
AU5713780A (en) 1981-10-15
NO801141L (no) 1981-10-22
DE3068658D1 (en) 1984-08-30

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