EP0041862A2 - Réchauffeur d'air - Google Patents

Réchauffeur d'air Download PDF

Info

Publication number
EP0041862A2
EP0041862A2 EP81302544A EP81302544A EP0041862A2 EP 0041862 A2 EP0041862 A2 EP 0041862A2 EP 81302544 A EP81302544 A EP 81302544A EP 81302544 A EP81302544 A EP 81302544A EP 0041862 A2 EP0041862 A2 EP 0041862A2
Authority
EP
European Patent Office
Prior art keywords
air
furnace
shell
heater according
air heater
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Withdrawn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
EP81302544A
Other languages
German (de)
English (en)
Other versions
EP0041862A3 (fr
Inventor
Reginald Dennis Northcote
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.)
Thorn EMI Energy Developments Ltd
Original Assignee
Thorn EMI Energy Developments Ltd
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 Thorn EMI Energy Developments Ltd filed Critical Thorn EMI Energy Developments Ltd
Publication of EP0041862A2 publication Critical patent/EP0041862A2/fr
Publication of EP0041862A3 publication Critical patent/EP0041862A3/fr
Withdrawn legal-status Critical Current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
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/06—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators
    • F24H3/08—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators by tubes
    • F24H3/088—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators by tubes using solid fuel

Definitions

  • This invention relates to an air heater.
  • An object of the invention is to provide a new and improved air heater.
  • an air heater comprising an outer shell defining an air heating space, a furnace within the shell in communication with an exhaust flue, means to fire the furnace and means to feed air to be heated through said air heating space.
  • the means to fire the furnace may comprise a'grate for solid fuel within the furnace and means to feed fuel to the grate.
  • At least one pass of smoke tubes are provided within the shell in heat exchange relationship with the air heating space.
  • two passes of such smoke tubes are provided one pass extending from a first smoke box, at the rear of the heater and in communication with the furnace, to a second smoke box at the front of the heater and the second pass extending from the second smoke box to the exhaust flue.
  • baffles are provided within the air heating space to cause the air to follow a tortuous path therein.
  • Preferably means are provided to feed fuel downwardly through the shell and air space to the furnace onto the grate and said means may comprise a fuel feed tube extending downwardly through the shell, air heating space and the roof of the furnace.
  • Solid fuel feed means may be provided within the tube.
  • a grit arrestor and grit refiring means may be provided.
  • air heater comprises an outer shell 10 within which an air heating space 11 is defined.
  • a furnace tube 12 of cylindrical configuration is located within the shell and has a grate 13 therein for burning solid fuel which is fed downwardly onto the grate 13 through a fuel feed tube 14.
  • the tube 14 extends downwardly through the shell 10, air space 11 and roof 15 of the furnace tube 12.
  • means 14a for feeding solid fuel onto the grate 13 is provided in the tube 14 and screw conveyor/pneumatic means illustrated diagrammatically at 14b are provided to feed fuel from the grate to the tube 14.
  • Primary air for combustion of the fuel is fed to the underside of the grate 13 through ducts 16 and secondary air is fed through the tube 14.
  • the furnace tube 12 continues as a combustion tube 17 and communicates with a first smoke box 18 at the rear of the heater from which a first pass of smoke tubes 19 extend towards the front of the heater where a second smoke box 20 is located from which a second pass of smoke tubes 21 extend to an exhaust flue 22.
  • the smoke tubes 19 and 21 are finned as indicated at 23 to improve the heat transfer characteristics between the smoke tubes and the air to be heated in the space 11.
  • part-cylindrical baffles 24 are provided within the shell 10 to provide a tortuous path for air to be heated which is fed into the interior of the shell through three inlet ducts 25 and which follows the path indicated by the arrows in Figure 2 and which exits from a single exit duct 26 located adjacent the rear of the heater so that longitudinal as well as circumferential flow of air to be heated occurs.
  • a blower 28 is provided to feed the air through the space 11 along the above described path.
  • the heater is provided with a conventional grit arresting means 29 at the rear thereof and a grit refiring means 30 together with appropriate control means whereby the grit is reintroduced into the furnace adjacent the front end thereof.
  • the heater may be fired with a liquid or gaseous fuel and the burner for such fuel is conveniently provided on a door 27 provided at the front of the heater.
  • the grate 13 is provided with conventional end wall 28 and more detailed discussion of the construction of the heater is not considered necessary.

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)
  • Air Supply (AREA)
  • Tunnel Furnaces (AREA)
  • Furnace Details (AREA)
EP81302544A 1980-06-10 1981-06-09 Réchauffeur d'air Withdrawn EP0041862A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8019000 1980-06-10
GB8019000 1980-06-10

Publications (2)

Publication Number Publication Date
EP0041862A2 true EP0041862A2 (fr) 1981-12-16
EP0041862A3 EP0041862A3 (fr) 1982-02-03

Family

ID=10513949

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81302544A Withdrawn EP0041862A3 (fr) 1980-06-10 1981-06-09 Réchauffeur d'air

Country Status (3)

Country Link
EP (1) EP0041862A3 (fr)
DK (1) DK252281A (fr)
ES (1) ES502878A0 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108036505A (zh) * 2017-12-04 2018-05-15 浙江武义万达干燥设备制造有限公司 燃气热风炉炉体结构
CN108050693A (zh) * 2017-12-04 2018-05-18 浙江武义万达干燥设备制造有限公司 燃气热风炉

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE352798C (de) * 1916-04-28 1922-05-04 William Herbert Nield Feuerungsanlage
US1737928A (en) * 1928-08-27 1929-12-03 Jesse L D Keppy Heating device
CH230655A (de) * 1943-02-20 1944-01-31 Steiner Albert Heizkessel-Anlage mit Sägemehl-Feuerung.
GB855837A (en) * 1958-04-22 1960-12-07 A E Greaves And Son Ltd Improvements relating to heat exchangers
DE2129826A1 (de) * 1970-06-18 1971-12-23 Gen Electric Gasgefeuerte Heizvorrichtung
US4128094A (en) * 1977-10-05 1978-12-05 Lewis Oscar D Heater

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE352798C (de) * 1916-04-28 1922-05-04 William Herbert Nield Feuerungsanlage
US1737928A (en) * 1928-08-27 1929-12-03 Jesse L D Keppy Heating device
CH230655A (de) * 1943-02-20 1944-01-31 Steiner Albert Heizkessel-Anlage mit Sägemehl-Feuerung.
GB855837A (en) * 1958-04-22 1960-12-07 A E Greaves And Son Ltd Improvements relating to heat exchangers
DE2129826A1 (de) * 1970-06-18 1971-12-23 Gen Electric Gasgefeuerte Heizvorrichtung
US4128094A (en) * 1977-10-05 1978-12-05 Lewis Oscar D Heater

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108036505A (zh) * 2017-12-04 2018-05-15 浙江武义万达干燥设备制造有限公司 燃气热风炉炉体结构
CN108050693A (zh) * 2017-12-04 2018-05-18 浙江武义万达干燥设备制造有限公司 燃气热风炉

Also Published As

Publication number Publication date
DK252281A (da) 1981-12-11
ES8204140A1 (es) 1982-04-01
ES502878A0 (es) 1982-04-01
EP0041862A3 (fr) 1982-02-03

Similar Documents

Publication Publication Date Title
US3604824A (en) Thermal incineration unit
US4343288A (en) Furnace
US4306858A (en) Recuperative heating unit for industrial furnace
US5406933A (en) High efficiency fuel-fired condensing furnace having a compact heat exchanger system
US5448986A (en) Heat exchanger
EP1323991B1 (fr) Brûleur pour échangeur de chaleur
US3529812A (en) Burner with air-preheated recovery
US5322050A (en) High efficiency fuel-fired condensing furnace having a compact heat exchanger system
US4482315A (en) Bulk tobacco barn furnace
AU713921B2 (en) Curved inshot burner and method for vent-within-casing furnace
EP0191644A3 (fr) Appareil de chauffage avec chambre de chauffe immergée
US4445843A (en) Low NOx burners
US3670713A (en) Gas-fired heater means
US3601116A (en) Mobile home furnace with air circulator outlet means
US4510918A (en) Woodburning heating apparatus
EP0041862A2 (fr) Réchauffeur d'air
US4218211A (en) Energy recovery system
GB1367828A (en) Hot-air furnace
US4751910A (en) Flue gas/combustion air heat exchanger
US4404954A (en) Fireplace furnace
GB2077415A (en) Air heater
US4020823A (en) Hot air heating system
EP0205993A3 (fr) Chauffe-eau chauffé par combustibles solides ayant une marche de flamme inversée pour une installation de chauffage central et en général pour une installation d'eau chaude
US3111978A (en) Dual blower and burner for furnaces
US4497281A (en) Heater

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

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): BE DE FR

AK Designated contracting states

Designated state(s): BE DE FR

17P Request for examination filed

Effective date: 19820222

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: THORN EMI ENERGY DEVELOPMENTS LIMITED

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19831004

RIN1 Information on inventor provided before grant (corrected)

Inventor name: NORTHCOTE, REGINALD DENNIS