EP0400757B1 - Appareil de chauffage à gaz - Google Patents
Appareil de chauffage à gaz Download PDFInfo
- Publication number
- EP0400757B1 EP0400757B1 EP19900201382 EP90201382A EP0400757B1 EP 0400757 B1 EP0400757 B1 EP 0400757B1 EP 19900201382 EP19900201382 EP 19900201382 EP 90201382 A EP90201382 A EP 90201382A EP 0400757 B1 EP0400757 B1 EP 0400757B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- flue
- fan
- self
- weight
- 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
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L13/00—Construction of valves or dampers for controlling air supply or draught
- F23L13/02—Construction of valves or dampers for controlling air supply or draught pivoted about a single axis but having not other movement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L11/00—Arrangements of valves or dampers after the fire
- F23L11/005—Arrangements of valves or dampers after the fire for closing the flue during interruption of burner function
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L17/00—Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues
- F23L17/005—Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues using fans
Definitions
- the invention relates to a gas-fired heating apparatus, as described in the pre-characterizing part of claim 1.
- the invention aims to improve such an apparatus shown in EP-A-333 297 (document according to Article 54 (3) EPC) in respect of the operation of a pilot light.
- the invention aims to overcome the drawbacks mentioned.
- the shaft on which the valve is mounted may be mounted rotatably and asymmetrically in the flue.
- the valve may comprise an "additional" weight, mounted on the long side of the asymetrically arranged valve.
- the centre of gravity of the valve and the weight together is above the horizontal plane containing the shaft.
- a proper unstable valve action is effected in response to the small differences in pressure which occur.
- a valve support may be mounted in the flue.
- a stop may be mounted in the flue so as to ensure the valve will assume a proper "open" position.
- an air passage may be provided in the flue downstream of the self-acting valve, which creates a "by-pass" effect.
- the fan may be arranged in the flue downstream of the self-acting valve and the air passage may be arranged upstream of the fan. This permits the use of a reduced pressure throughout the system, so that problems of leakage will be avoided.
- the self-acting valve and the air passage referred to may be of such construction that when the valve is opened the air passage is completely or partly shut off.
- the advantage is obtained that a smaller fan will suffice since during the burning process the valve will be open and the by-pass will be shut off.
- a heating apparatus as shown in EP-A-333297 comprises a heat exchanger 1 with fins 2 and a water compartment 3.
- a water compartment 3 To the water compartment 3 connect an inlet 4 and, diametrically opposite, an outlet 5, both omitted for the sake of clarity.
- injectors 7, a manifold 8 and a gas supply duct 9 Arranged upstream of a burner 6 are injectors 7, a manifold 8 and a gas supply duct 9.
- the injectors 7 and the burner 6 are arranged in a body 10 whose inner wall has an insulating lining 11 applied to it.
- a pilot light 22 In the vicinity of the burner a pilot light 22 is provided.
- the top of the heat exchanger 1 is closed with a hood 12 in which an opening is provided above which a fan 13 is arranged whose outlet connects to a flue 14 for burnt gases.
- the whole arrangement is accommodated in a housing or box 15 in which an air supply opening is provided (not shown).
- a valve 16 is mounted in the flue 14 .
- the furnace is closed at the top with a drum provided with an insulating cover 20.
- the valve 16 is mounted on a shaft 17 rotatably mounted in the wall of the flue 14.
- the shaft 17 is mounted asymmetrically in the flue 14.
- a weight 18 is mounted on the upper side of the valve, causing the valve to close when no heat is required and the burner is off.
- the end of the valve 16 that is remote from the shaft 17 has a bend 19.
- the end portion 19 thus formed, when the valve is in the closed position, rests on a support 20 fixedly attached to the wall of the flue 14.
- the bent portion 19 ensures that the flue gas flow continues to bring a force to bear on the valve when it is in the fully opened position.
- the fan 13 When the valve is closed, the fan 13 operates at a lower voltage, for instance of 70 volts, which ensures the burner space is ventilated. This last is of particular importance when there is a pilot light in the burner space. Furthermore, it is thus ensured that the water in the heat exchanger 1 is maintained at a reasonable temperature (for example 70°C), so that upon tapping one need not wait long for hot water to be supplied.
- the fan will be adjusted to a voltage of 220 volts, which causes the valve 16 to move automatically into the open position under the influence of the difference in pressure.
- a stop 21 is mounted on the wall of the flue 14 for the weight to engage when the valve is opened.
- valve has flat edges at its lower and upper side as shown in Fig. 3, which ensures the valve is open widely when in the opened position.
- FIG. 4 In the embodiments shown in Figs 4 and 5 like parts are designated by like reference numerals. A difference between the apparatus according to Fig. 4 and the apparatus according to Fig. 1 resides in the fact that in the embodiment according to Fig. 4 a fan 30 is provided which is arranged in the air supply duct. The direction of flow is indicated with an arrow.
- a tubular opening 31 is provided, which creates a by-pass effect in that in such an arrangement a large part of the air supply will be directly discharged via the flue and will thus be prevented from withdrawing any substantial heat from the burner space.
- sufficient air i.e. oxygen, must be supplied to ensure the pilot light will not choke.
- the end of the tubular opening 31 terminating in the flue is indicated at 32 and can be shut off by coaction with the top of the weight 18.
- Fig. 5 shows a variant of the apparatus according to Fig. 4, in which a fan 35 is arranged in the flue 14 again.
- the valve 16 and the tubular "by-pass" opening 31 are identical to those shown in Fig. 4 and will therefore not be further described here.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Incineration Of Waste (AREA)
- Air Supply (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Claims (11)
- Appareil de chauffage à gaz, comprenant un foyer qui est bordé sur un côté, de préférence sur le fond, par un ou plusieurs brûleurs (6) qui peuvent être mis à feu par une veilleuse (22), un échangeur de chaleur recouvert sur le dessus par un capot (12) qui se raccorde à un conduit (14) d'évacuation des gaz brûlés, une soufflante (13, 30, 35) disposée dans un conduit d'alimentation en air ou dans le conduit d'évacuation (14), laquelle soufflante (13, 30, 35) continue à fonctionner lorsque la veilleuse (22) brûle, caractérisé par un clapet (16) à actionnement automatique qui est monté dans le conduit d'alimentation en air ou dans le conduit d'évacuation (14), ledit clapet (16) étant ouvert lorsque la soufflante (13, 30, 35) tourne à vitesse rapide, et étant fermé, par exemple au moyen d'un poids (18) ou d'un ressort, lorsque ladite soufflante (13, 30, 35) tourne à vitesse lente.
- Appareil selon la revendication 1, caractérisé en ce que le clapet (16) est monté à rotation sur un axe (17) qui est monté en position asymétrique par rapport au conduit d'alimentation en air ou au conduit d'évacuation (14) et au clapet (16).
- Appareil selon la revendication 2, caractérisé en ce que le poids (18) est disposé sur le "long" côté du clapet (16) en disposition asymétrique, et le centre de gravité de l'ensemble formé par le clapet (16) et le poids (18) se trouve au-dessus du plan horizontal contenant l'axe (17).
- Appareil selon une ou plusieurs des revendications précédentes, caractérisé en ce que le clapet (16) possède une partie coudée ou cintrée (19).
- Appareil selon la revendication 4, caractérisé en ce que la partie coudée ou cintrée (19) est formée sur le "long" côté du clapet (16).
- Appareil selon la revendication 5, caractérisé en ce qu'un support ou siège de clapet (20) est monté dans le conduit d'évacuation (14).
- Appareil selon une ou plusieurs des revendications précédentes, caractérisé en ce qu'une butée (21) pour le poids (18) du clapet (16) est montée dans le conduit d'évacuation (14).
- Appareil selon la revendication 1, dans lequel la soufflante (30) est montée dans le conduit d'alimentation en air, caractérisé en ce qu'un passage d'air (31) est prévu dans le conduit d'évacuation (14) en aval du clapet (16) à actionnement automatique.
- Appareil selon la revendication 1, dans lequel la soufflante (35) est montée dans le conduit d'évacuation, caractérisé en ce que la soufflante (35) est montée dans le conduit d'évacuation en aval du clapet (16) à actionnement automatique, et un passage (31) est prévu en amont de la soufflante (35).
- Appareil selon la revendication 8 ou 9, caractérisé en ce que ledit passage (31) présente un moyen de fermeture réglable.
- Appareil selon la revendication 8, 9 ou 10, caractérisé en ce que le clapet (16) à actionnement automatique et le passage d'air (31) sont agencés de telle sorte que le passage d'air (31) soit partiellement ou totalement fermé lorsque le clapet (16) est ouvert.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8901363 | 1989-05-30 | ||
NL8901363A NL8901363A (nl) | 1989-05-30 | 1989-05-30 | Gasgestookt verwarmingstoestel. |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0400757A2 EP0400757A2 (fr) | 1990-12-05 |
EP0400757A3 EP0400757A3 (fr) | 1992-01-08 |
EP0400757B1 true EP0400757B1 (fr) | 1994-08-03 |
Family
ID=19854741
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19900201382 Expired - Lifetime EP0400757B1 (fr) | 1989-05-30 | 1990-05-30 | Appareil de chauffage à gaz |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0400757B1 (fr) |
DE (1) | DE69011218T2 (fr) |
NL (1) | NL8901363A (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1001996C2 (nl) | 1995-12-28 | 1997-07-02 | Remeha Fabrieken Bv | Klep en een verwarmingstoestel voorzien van een dergelijke klep. |
AT407434B (de) * | 1998-11-30 | 2001-03-26 | Vaillant Gmbh | Wärmetauscherdichtung |
GB2379974A (en) * | 2001-08-30 | 2003-03-26 | Magiglo Ltd | An extractor unit which contains a pivoting baffle to prevent reverse draughts |
CN103604215B (zh) * | 2013-11-08 | 2016-06-08 | 威能(无锡)供热设备有限公司 | 烟罩及采用该烟罩的燃气热水设备 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2179940A (en) * | 1935-11-23 | 1939-11-14 | John F Lawson | Automatic damper |
US2388073A (en) * | 1941-04-29 | 1945-10-30 | Gen Electric | Fluid flow control |
FR2337317A1 (fr) * | 1975-12-30 | 1977-07-29 | Saunier Duval | Dispositif de securite pour appareil de chauffage a gaz |
US4262608A (en) * | 1979-06-14 | 1981-04-21 | Jackson Bert W | Method and apparatus for powered flue products exhaust and preheated combustion air supply |
DE3046350A1 (de) * | 1979-09-07 | 1982-07-22 | Otto 8898 Schrobenhausen Eppinger | Nebenoeffnung mit rohrleitungsanschluss z. verhinderung einer kaminversottung b. brennerstillstand, die durch schliessen des sperrsystems geoeffnet wird u. durch das oeffnen des sperrsystems geschlossen wird |
US4408567A (en) * | 1981-02-03 | 1983-10-11 | Morton Michael S | Furnace construction |
JPS61205723A (ja) * | 1985-03-11 | 1986-09-11 | Matsushita Electric Ind Co Ltd | 強制給排気装置 |
-
1989
- 1989-05-30 NL NL8901363A patent/NL8901363A/nl not_active Application Discontinuation
-
1990
- 1990-05-30 EP EP19900201382 patent/EP0400757B1/fr not_active Expired - Lifetime
- 1990-05-30 DE DE1990611218 patent/DE69011218T2/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
NL8901363A (nl) | 1990-12-17 |
DE69011218T2 (de) | 1994-12-08 |
DE69011218D1 (de) | 1994-09-08 |
EP0400757A2 (fr) | 1990-12-05 |
EP0400757A3 (fr) | 1992-01-08 |
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