EP0806616B1 - Sealed wall-hung boiler with reduced size heating parts - Google Patents

Sealed wall-hung boiler with reduced size heating parts Download PDF

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Publication number
EP0806616B1
EP0806616B1 EP19970500054 EP97500054A EP0806616B1 EP 0806616 B1 EP0806616 B1 EP 0806616B1 EP 19970500054 EP19970500054 EP 19970500054 EP 97500054 A EP97500054 A EP 97500054A EP 0806616 B1 EP0806616 B1 EP 0806616B1
Authority
EP
European Patent Office
Prior art keywords
air
burner
sealed wall
hung boiler
fan
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.)
Expired - Lifetime
Application number
EP19970500054
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0806616A3 (en
EP0806616A2 (en
Inventor
Kepa Larruzea Goienetxe
José Miguel Cavia Ortega
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.)
Fagor Electrodomesticos SCL
Original Assignee
Fagor Electrodomesticos SCL
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 Fagor Electrodomesticos SCL filed Critical Fagor Electrodomesticos SCL
Publication of EP0806616A2 publication Critical patent/EP0806616A2/en
Publication of EP0806616A3 publication Critical patent/EP0806616A3/en
Application granted granted Critical
Publication of EP0806616B1 publication Critical patent/EP0806616B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F24H9/00—Details
    • F24H9/0084—Combustion air preheating
    • F24H9/0089—Combustion air preheating by double wall boiler mantle
    • 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
    • F24H9/02—Casings; Cover lids; Ornamental panels
    • 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
    • F24H2203/00—** to be deleted **

Definitions

  • the present invention relates to a domestic sealed wall-hung boiler, which also supplies instantaneous hot sanitary water and comprises a fan-assisted atmospheric burner, and more particularly relates to the assembly of the burner, the supply of combustion air to the burner and the arrangement of the component parts enclosed in the boiler casing.
  • the burner is built with a series of aligned flame distributors with an interlaying separation, where the primary air is mixed with the gas by way of a series of apertures in a continuous plate each facing the corresponding venturi of the respective burner, and the secondary air is brought to the combustion chamber by way of holes adjacent to these mixing apertures.
  • the secondary air flow for combustion enters the boiler combustion chamber at high speed from a grille in the base of the burner punched with a specific distribution of holes giving onto the gaps between the flame distributors.
  • the subject of the invention is a domestic sealed wall-hung boiler with a compact fan-assisted atmospheric burner, where the whole clean air inflow for combustion is channelled and supplied to the burner by way of its bottom base, comprising:
  • the relatively small size of the burner assembly is achieved in combination with a flat conduit for delivering forced draught air at high speed so as to supply all the secondary air needed for combustion drawn through the small base area of the burner, offering the advantage of the reduced width and thickness of all the heating parts and taking up only half the width of the main cavity in the boiler casing, leaving the other side free for the installation of the control devices, and thereby reducing the overall height and depth of the boiler in order to facilitate its housing in a kitchen furniture.
  • FIG. 1 is a front view of the sealed wall-hung boiler, which is the object of the invention.
  • FIG. 2 is a cross-section on II-II of the figure 1.
  • FIG. 3 is a partial view as per figure 2 showing the delivery of air to the boiler burner.
  • FIG. 4 is a plan view of the boiler burner.
  • FIG. 5 shows a close view of figure 4.
  • FIG. 6 is a plan view of the combustion air and fuel gas distribution grille.
  • FIG. 7 is an elevational view of the fig. 6 grille.
  • FIG. 8 is a profile view of the fig. 6 grille.
  • FIG. 9 is a plan view of the exterior air intake diffuser.
  • the sealed wall-hung boiler 1 which is the object of the invention comprises a casing 2 enclosing the boiler, in which are arranged the different components of a common sealed boiler, comprising, in ascending order from the bottom to the roof, the control panel 3, which covers the reduced height control unit 4, the gas solenoid valve 5, the gas distribution conduit 6, the atmospheric burner 7, the combustion chamber 8,8', the heat exchanger 9, the spacer box 10 supporting the centrifugal fan 11, the boiler air intake diffuser 12, the exterior clean air inlet 13, and the vent flue 14.
  • All the above-listed parts of the boiler 1 are arranged on the right-hand side corresponding to the control knob panel 4, taking up approximately half the width of the main cavity in the casing 2 and leaving the space on the left for the installation of the water circuit 15 components, so that the overall width 34 of the boiler is kept within a standard dimension of 425 mm.
  • These common water circuit 15 control components are arranged in a vertical layout and consist, in descending order from top to bottom, of the air pressure switch 16, the three-way valve 17, which changes over the sanitary water and heating circuits 18,19, the secondary exchanger 20, the water pressure switch 21, the water pump 22 and the connectors 23.
  • the side column arrangement of components 16 to 23 is achieved in a boiler casing 2, which has a reduced height dimension 35, namely 675 mm compared with the known domestic boilers of a maximum output equal to 20,000 Kcal/h, while the depth dimension 33 of the boiler, equal to 300 mm, is also reduced owing to the fact that the burner 7 has a height 36 of 120 mm, a width 37 of 120 mm and a depth 38 of 120 mm, approximate values that are highly reduced in comparison with the atmospheric burners used in known boilers of the same heat performance and power.
  • the combustion chamber 8 is completed vertically, with the supplementary casing 8' cooled by two surrounding pipes to prevent overheating of the exchanger 9.
  • the fan spacer box provides a support base for the fan 11 so that it may be withdrawn from the front in the event of its being replaced.
  • Figures 2 and 3 show a longitudinal section of the layout of the combustion air supply system. Its delivery flow, comprising both the primary and secondary air supply, is forced by the fan 11 from the air intake diffuser 12 and channelled by way of the flat conduit until reaching the air distribution enclosure 25 b below the burner 7, from where it is split into two branches corresponding to the primary air 41 and the secondary air 42, the former of them mixed with the gas injected by a series of nozzles 6' connected to the gas pipe 6, the mixture being directed to each of the flame distributors 28 by way of the respective venturi 27, and the secondary air 42 distributed to the whole area of the burner 7, for which purpose both the burner and the gas distribution pipe 6 and the air distribution enclosure 25 b are encased by a front cover 31, which at the same time seals the distribution enclosure 25 b .
  • the flat air supply conduit 25 runs down the casing 2 attached to the rear wall 32 of the main cavity, occupying a width slightly larger than the width dimension 37 of the burner, and below this it is re-routed in a horizontal direction to form the distribution enclosure 25 b .
  • the inflow of clean combustion air along the duct 13 is diffused to the flat conduit by means of a flat diffuser 12, whilst in a second embodiment of the air supply system the air intake diffuser 12 b is covering the fan 11 for cooling purposes.
  • the 10 mm thick flame distributors 28 are arranged a certain distance apart in the burner area to form the channels 30, of 4 mm thickness, for ducting the secondary air to the combustion chamber 8.
  • the secondary air stream 41 is distributed to the channels 30 from the enclosure 25 b via the grille 29, which, as is shown in figures 6 to 8, is made from a punched plate bent at right angles successively at each of the sides so as to form a base of the burner 7 with three plates 29 a , 29 b , 29 c that make up an intermediate step, where the gas distribution pipe 6 and the nozzles 6' are installed.
  • the secondary air 42 flow plate 29 a of a larger area, is provided with a series of holes 43 of 2.5 mm in diameter arrayed in formations away from one another, so that each of them is situated under one of the afore-mentioned ducting channels 30, and it also has three rows of holes 44 of 3.5 mm to 4.5 mm flanking the previous ones, whilst in the secondary air 41 flow plate 29 c , of a smaller area, the holes 45 are 3 mm in diameter. Facing the nozzles 6', the vertical plate 29 b has elongated apertures 46 for the simultaneous inflow of gas and the primary air stream 41 into the venturis 27.

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)
  • Housings, Intake/Discharge, And Installation Of Fluid Heaters (AREA)
  • Gas Burners (AREA)
EP19970500054 1996-05-10 1997-03-19 Sealed wall-hung boiler with reduced size heating parts Expired - Lifetime EP0806616B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES9601064 1996-05-10
ES9601064A ES2136495B1 (es) 1996-05-10 1996-05-10 Caldera mural estanca con elementos de caldeo de tamaño reducido.

Publications (3)

Publication Number Publication Date
EP0806616A2 EP0806616A2 (en) 1997-11-12
EP0806616A3 EP0806616A3 (en) 1998-11-18
EP0806616B1 true EP0806616B1 (en) 2000-01-05

Family

ID=8294794

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970500054 Expired - Lifetime EP0806616B1 (en) 1996-05-10 1997-03-19 Sealed wall-hung boiler with reduced size heating parts

Country Status (3)

Country Link
EP (1) EP0806616B1 (es)
DE (1) DE69701056D1 (es)
ES (1) ES2136495B1 (es)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1026455A1 (en) * 1999-02-03 2000-08-09 IABER S.p.A. Basic boiler combustion chamber
FR2854229A1 (fr) 2003-04-25 2004-10-29 Realisation Mecaniques Engenee Echangeur de chaleur a condensation
EP2390594A3 (de) * 2010-05-26 2015-08-26 Gealan Formteile GmbH Vorrichtung zur Erwärmung von Medien
JP6291896B2 (ja) * 2014-02-20 2018-03-14 株式会社ノーリツ 燃焼装置
CN112178939B (zh) * 2019-07-05 2022-03-01 芜湖美的厨卫电器制造有限公司 水加热方法及装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH428139A (de) * 1965-12-15 1967-01-15 Rueegg Walter Heizvorrichtung mit Feuerstelle
DE2943000A1 (de) * 1979-10-24 1981-05-07 Okal-Werk Niedersachsen Otto Kreibaum Gmbh & Co Kg, 3216 Salzhemmendorf Heizkesselanordnung
DE3338126A1 (de) * 1983-10-20 1985-05-02 Robert Bosch Gmbh, 7000 Stuttgart Gasbeheizter waermetauscher, insbesondere fuer absorptionskaeltemaschinen
DE8716241U1 (es) * 1987-12-09 1988-01-28 Buderus Heiztechnik Gmbh, 6330 Wetzlar, De
JP3520503B2 (ja) * 1994-02-18 2004-04-19 タカラスタンダード株式会社 石油給湯機のバーナユニット
ES1032506Y (es) * 1995-11-15 1996-12-01 Fagor S Coop Aparato compacto de calefaccion y refrigeracion domestico.

Also Published As

Publication number Publication date
EP0806616A3 (en) 1998-11-18
ES2136495B1 (es) 2000-07-01
EP0806616A2 (en) 1997-11-12
DE69701056D1 (de) 2000-02-10
ES2136495A1 (es) 1999-11-16

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