EP1748254B1 - Gas fireplace - Google Patents
Gas fireplace Download PDFInfo
- Publication number
- EP1748254B1 EP1748254B1 EP06015657.7A EP06015657A EP1748254B1 EP 1748254 B1 EP1748254 B1 EP 1748254B1 EP 06015657 A EP06015657 A EP 06015657A EP 1748254 B1 EP1748254 B1 EP 1748254B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air
- ventilation
- combustion chamber
- gas fireplace
- chamber
- 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.)
- Active
Links
- 239000007789 gas Substances 0.000 claims description 40
- 238000002485 combustion reaction Methods 0.000 claims description 38
- 238000009423 ventilation Methods 0.000 claims description 34
- 238000010438 heat treatment Methods 0.000 claims description 24
- 239000003546 flue gas Substances 0.000 claims description 18
- 230000003584 silencer Effects 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 5
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000005192 partition Methods 0.000 description 3
- 239000002737 fuel gas Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004579 marble Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- F24B1/1808—Simulated fireplaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGESĀ ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/003—Details moisturising of air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGESĀ ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C3/00—Stoves or ranges for gaseous fuels
- F24C3/002—Stoves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGESĀ ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C3/00—Stoves or ranges for gaseous fuels
- F24C3/002—Stoves
- F24C3/004—Stoves of the closed type
Definitions
- the present invention relates to a gas fireplace, particularly suitable for heating house spaces.
- Conventional gas fireplaces generally comprise either a frontally closed combustion chamber or a frontally open fireside, a comburent air intake, an exhaust duct for flue gases, and an air circuit designed to suck room air to be heated, to heat the sucked air, and to discharge the heated air into the room where the gas fireplace is located.
- Warm air released from the upper front of the fireplace is often a source of nuisance for people standing in front of the fireplace, since they are hit by a warm air flow.
- a fireplace system is unsuitable for quickly heating room air below the warm air delivery level, where instead a quick warming is desirable as warm air flow obviously tends to flow upwards towards the room ceiling, thus resulting in an undesired heat gradient being generated, at least at the initial stage of heating a room, between the air close to the ceiling and the air below the level of the air outlet mouth or mouths, which means uneven heating of the room.
- a motor-driven fan generally driven by an electric motor, which is designed to suck relatively cold air from the room and deliver it in a warmed and forced condition back into the same room through the one or more delivery mouths.
- the main object of the present invention is to provide a gas fireplace which makes it possible to eliminate or at least substantially reduce the above mentioned drawbacks.
- Another object of the present invention is to provide a gas fireplace having optimum efficiency, very high yield and autonomy, and suitable for quickly and evenly heating the space where it is located.
- a further object of the present invention is to provide a gas fireplace that can be manufactured at a low production cost and can be easily installed.
- a gas fireplace comprising a support and housing frame, a gas combustion chamber, at least one chimney duct for releasing flue gases coming from said combustion chamber, at least one inlet duct for external comburent air leading to said combustion chamber, a ventilation and heating circuit designed to suck environment air, and to heat and feed it at least partly into the space where the fireplace is located, and at least one motor-driven fan designed to operate in said ventilation and heating circuit, characterized in that at least one silencer device is provided along said ventilation and heating circuit.
- said silencer device is arranged downstream of said motor-driven fan.
- said motor-driven fan is arranged downstream of said ventilation and heating circuit, whereby room air is sucked through one or more suction mouths provided at at least one upper portion of the fireplace above said combustion chamber, and fed in a warmer state into the space at at least one delivery mouth provided at at least one lower portion located below said combustion chamber.
- the external inlet comburent air is pre-heated through heat exchange with the flue gases being discharged along the or each chimney duct, and transfer a portion of its pre-heating heat to the room air to be heated.
- pre-heating of external comburent air is carried out by locating the or each chimney duct inside a respective outer comburent air feeding duct so that a gap is formed therebetween through which external comburent air can flow, thereby countercurrent heat exchange is obtained between flue gases and external comburent air.
- said gas fireplace has a hood adapted to delimit a space above said combustion chamber for a desired room air conveyance.
- said ventilation and heating circuit comprises at least one humidifier device for the heated air delivered into the room.
- a gas fireplace according to the present invention, generally designed with reference numeral 1, comprises a support and housing frame including a base 2, preferably covered with lining members, e.g. made of marble or ceramic material, from which a substantially parallelepiped housing 3 rectangular in top view rises.
- the housing 3 delimits a closed inner space and comprises a lower or bottom wall 4, two side walls 5a, 5b, a rear wall 6, an upper or ceiling wall 7, as well as a front door 8, preferably made of glass or, more preferably, ceramic glass, in order to ensure a good heat-tight arrangement.
- the inner space of the housing 3 is subdivided into a number of adjacent chambers, as described below.
- a combustion chamber 9 where a gas burner 10 is located, to which fuel gas can be fed through a feeding duct 11 in fluid communication with a suitable fuel gas source (not shown in drawings), e.g. a methane gas pipe network or a gpl feeding tank or even a bottle of another suitable liquefied gas fuel, as it is well known in the art.
- a suitable fuel gas source e.g. a methane gas pipe network or a gpl feeding tank or even a bottle of another suitable liquefied gas fuel, as it is well known in the art.
- the combustion chamber 9 is sealed and made of metallic material, preferably cast iron, thereby ensuring an efficient heat exchange between the inner and outer portions of the combustion chamber.
- the combustion chamber is internally covered with refractory material. More particularly, the combustion chamber 9 is delimited by a lower or bottom wall 12, two side walls 13a and 13b, a rear wall 14, an upper wall or ceiling 15, and the front door 8.
- one or more ventilation chambers are delimited, preferably a rear ventilation chamber 16, two side ventilation chambers 17a and 17b, preferably in direct communication with the rear chamber 16, and an upper ventilation chamber 18, owing to the presence of one or more metal partitions 19, which are located in such a manner as to extend around the combustion chamber 9, but at a given distance therefrom.
- the walls of the ventilation chambers 16, 17a, and 17b can have finnings A to enhance the heat exchange efficiency between hot flue gases and air to be heated.
- one or more chambers 20 for external comburent air are delimited, which extend at the lower portion thereof below the combustion chamber 9 between bottom wall 12 of the latter and the bottom wall 4 of the housing 3, and lead to the burner 10, whereas at the upper portion thereof the same chambers are in fluid communication with a metal inlet duct 21 for external comburent air.
- Duct 21 has its inlet mouth 22 for external comburent air outside the space or room to be heated where the gas fireplace 1 is located ( Figure 2 ), and advantageously extends through a wall P of a building.
- the combustion chamber 9 at its ceiling 15 is in communication with a metal chimney duct 23 arranged to exhaust the flue gases and preferably extends inside the inlet duct 21 for external comburent air, thereby delimiting therewith a gap 24 suitable for delimiting a comburent air passage, which passage is in countercurrent heat exchange with the relatively hot flue gases coming from the combustion chamber 9.
- the chimney duct 23 ends with an exhaust diffuser 25 beyond the inlet mouth 22 for comburent air.
- the upper ventilation chamber 18 is in communication with both the rear and the side ventilation chambers 16, 17a, and 17b, respectively, and a plurality of upper openings 26, only one of which is shown in Figure 2 , above which, in the case in which the gas fireplace is equipped with a hood K, there is preferably provided a space S for conveying room air sucked through one or more mouths 27 arranged in the hood K and preferably provided with grid 28, before entering in a ventilation and hearting circuit through openings 26.
- the ventilation and heating circuit for room air also comprises, besides the ventilation chambers 16, 17a, 17b, and 18, a motor-driven fan 30, preferably a solenoid valve having a relatively large flow rate, whose suction side is in fluid communication with a lower manifold 31, which is in turn in communication with the ventilation chambers 16, 17a, 17b, and 18, whereas its delivery side is connected to a feeding duct 32 for heated room air located at the base 2 below the combustion chamber 9.
- a motor-driven fan 30 preferably a solenoid valve having a relatively large flow rate, whose suction side is in fluid communication with a lower manifold 31, which is in turn in communication with the ventilation chambers 16, 17a, 17b, and 18, whereas its delivery side is connected to a feeding duct 32 for heated room air located at the base 2 below the combustion chamber 9.
- the delivery duct 32 is intercepted by a silencer device 33 of any suitable type designed to eliminate or substantially deaden noises produced in the forced air flow inside the feeding duct 32. Downstream of the silencer device 33 there is provided a mouth 34 for delivering heated room air into the space to be heated, optionally together with one or more intakes for a duct (not shown in drawings) for heated room air to be supplied to rooms adjacent to the space in which the gas fireplace 1 is located.
- a humidification device 35 can be provided which comprises a water reservoir, that owing to heat exchange with hot flue gases coming from the combustion chamber, as well as to heat exchange with room air conveyed into the space S, in the case of a gas fireplace provided with a hood K, evaporates, thereby causing heated air delivered into the room in which the gas fireplace 1 is located to become less dry, and thus more pleasant.
- Relatively cold external comburent air enters the fireplace through one or more wall-type or roof-type mouths 23, flows through inlet duct 21 for comburent air, and reaches the comburent air chamber 20, from where it flows below the combustion chamber 9 before entering the same from below to feed the combustion of gas supplied to burner 10 through the gas feeding duct 11.
- inlet air is in convective countercurrent heat exchange relationship with the hot flue gases, which results in comburent air flowing through the gap 24 being progressively pre-heated and the outlet flue gases being consequently cooled.
- room air to be heated enters the ventilation and heating circuit of the gas fireplace 1 at the upper openings 26, or, if the gas fireplace 1 is equipped with a hood K, through mouths 27 provided with grid 28, formed in the hood K.
- room air sucked into the ventilation and heating circuit is forced to flow through ventilation chambers 16, 176a, and 17b arranged between the combustion chamber 9 and the comburent air chamber or chambers 20.
- ventilation chambers 16, 17a, 17b air is heated owing to a double heat exchange, i. e.
- the delivery mouth of the fan 30 is connected, through the silencer device 33 for eliminating any tedious noises generated in the heated air delivery flow, to one or more heated air delivery ducts through which heated air is delivered through openings 34 in the room in which the gas fireplace 1 is located, or is also partly supplied through suitable ducts into adjacent rooms.
- side ventilation chambers 17a and 17b can be placed into communication with one another through one or more tubular members 29 extending from one chamber to another through the combustion chamber 9 at the upper wall or ceiling 15 thereof.
- ventilation chambers 16, 17a, 17b can be located outside the comburent air chamber 20, rather than being provided between the external comburent air chamber 20 and the combustion chamber 20.
- the present invention also relates to an arrangement comprising a direct intake of comburent environment air, i.e. through an comburent air inlet duct 21 for connecting the combustion chamber 9 to the external environment without preheating the inlet comburent air along the chimney.
- the silencer device 33 will also be provided upstream of the solenoid valve 30, whereby it can operate both on the intake or delivering side thereof.
Description
- The present invention relates to a gas fireplace, particularly suitable for heating house spaces.
- Numerous fireplaces have been proposed in the art that are fed with gas, generally methane gas or, more recently, gpl (liquefied petroleum gas).
- Conventional gas fireplaces generally comprise either a frontally closed combustion chamber or a frontally open fireside, a comburent air intake, an exhaust duct for flue gases, and an air circuit designed to suck room air to be heated, to heat the sucked air, and to discharge the heated air into the room where the gas fireplace is located.
- Such fireplaces have a number of serious drawbacks. As a matter of fact, room air is sucked from the room where the fireplace is located, typically through openings or mouths formed in the lower portion of the fireplace, is heated mainly owing to convective heat exchange through metal walls of the combustion chamber or fireside, and is then fed back into the room through one or more warm air delivering mouths formed in the upper front portion of the fireplace.
- Warm air released from the upper front of the fireplace is often a source of nuisance for people standing in front of the fireplace, since they are hit by a warm air flow. In any case, such a fireplace system is unsuitable for quickly heating room air below the warm air delivery level, where instead a quick warming is desirable as warm air flow obviously tends to flow upwards towards the room ceiling, thus resulting in an undesired heat gradient being generated, at least at the initial stage of heating a room, between the air close to the ceiling and the air below the level of the air outlet mouth or mouths, which means uneven heating of the room.
- A conventional fireplace of this type is disclosed in
US-6 050 259 patent. - The operations of sucking room air and feeding it back, once heated, into the same room are carried out by a motor-driven fan generally driven by an electric motor, which is designed to suck relatively cold air from the room and deliver it in a warmed and forced condition back into the same room through the one or more delivery mouths.
- To obtain a good heating efficiency of the fireplace, it is generally necessary, besides providing an efficient heat exchange between flue gases and sucked room air, to keep a relatively high flow of room air through the fireplace.
- For obtaining this desired result, in recent years increasingly more powerful fans have been used, which results in a considerable increase in the noise pollution caused by large amounts of air flowing through the fan and ventilation chambers, and intake and delivery ducts.
- The main object of the present invention is to provide a gas fireplace which makes it possible to eliminate or at least substantially reduce the above mentioned drawbacks. Another object of the present invention is to provide a gas fireplace having optimum efficiency, very high yield and autonomy, and suitable for quickly and evenly heating the space where it is located.
- A further object of the present invention is to provide a gas fireplace that can be manufactured at a low production cost and can be easily installed.
- These and other objects, which will better appear below, are attained by a gas fireplace according to the present invention, comprising a support and housing frame, a gas combustion chamber, at least one chimney duct for releasing flue gases coming from said combustion chamber, at least one inlet duct for external comburent air leading to said combustion chamber, a ventilation and heating circuit designed to suck environment air, and to heat and feed it at least partly into the space where the fireplace is located, and at least one motor-driven fan designed to operate in said ventilation and heating circuit, characterized in that at least one silencer device is provided along said ventilation and heating circuit.
- Advantageously, said silencer device is arranged downstream of said motor-driven fan.
- Preferably, said motor-driven fan is arranged downstream of said ventilation and heating circuit, whereby room air is sucked through one or more suction mouths provided at at least one upper portion of the fireplace above said combustion chamber, and fed in a warmer state into the space at at least one delivery mouth provided at at least one lower portion located below said combustion chamber.
- To increase the heat exchange efficiency between the relatively hot flue gases and the external comburent air as well as the relatively cold room air, the external inlet comburent air is pre-heated through heat exchange with the flue gases being discharged along the or each chimney duct, and transfer a portion of its pre-heating heat to the room air to be heated.
- Preferably, pre-heating of external comburent air is carried out by locating the or each chimney duct inside a respective outer comburent air feeding duct so that a gap is formed therebetween through which external comburent air can flow, thereby countercurrent heat exchange is obtained between flue gases and external comburent air.
- Advantageously, said gas fireplace has a hood adapted to delimit a space above said combustion chamber for a desired room air conveyance.
- Preferably, said ventilation and heating circuit comprises at least one humidifier device for the heated air delivered into the room.
- Further aspects and advantages of a gas fireplace according to the present invention will be better apparent from the following detailed description given with reference to the accompanying drawings, in which:
-
Figure 1 is a front view of a gas fireplace according to the present invention; -
Figure 2 shows a side cross sectional view taken along a vertical line of the fireplace inFigure 1 provided with a hood; and -
Figure 3 is a front cross sectional view taken along a vertical line of the fireplace inFigure 2 . - With reference to the above listed Figures, a gas fireplace according to the present invention, generally designed with
reference numeral 1, comprises a support and housing frame including abase 2, preferably covered with lining members, e.g. made of marble or ceramic material, from which a substantiallyparallelepiped housing 3 rectangular in top view rises. Thehousing 3 delimits a closed inner space and comprises a lower orbottom wall 4, twoside walls rear wall 6, an upper orceiling wall 7, as well as afront door 8, preferably made of glass or, more preferably, ceramic glass, in order to ensure a good heat-tight arrangement. - The inner space of the
housing 3 is subdivided into a number of adjacent chambers, as described below. - In the innest portion there is provided a
combustion chamber 9, where agas burner 10 is located, to which fuel gas can be fed through afeeding duct 11 in fluid communication with a suitable fuel gas source (not shown in drawings), e.g. a methane gas pipe network or a gpl feeding tank or even a bottle of another suitable liquefied gas fuel, as it is well known in the art. Thecombustion chamber 9 is sealed and made of metallic material, preferably cast iron, thereby ensuring an efficient heat exchange between the inner and outer portions of the combustion chamber. If desired, the combustion chamber is internally covered with refractory material. More particularly, thecombustion chamber 9 is delimited by a lower orbottom wall 12, twoside walls rear wall 14, an upper wall orceiling 15, and thefront door 8. - Outside the
combustion chamber 9 one or more ventilation chambers are delimited, preferably arear ventilation chamber 16, twoside ventilation chambers rear chamber 16, and anupper ventilation chamber 18, owing to the presence of one ormore metal partitions 19, which are located in such a manner as to extend around thecombustion chamber 9, but at a given distance therefrom. - Advantageously, the walls of the
ventilation chambers - Between the
rear wall 6 and theside walls housing 3 and themetal partitions 19 one ormore chambers 20 for external comburent air are delimited, which extend at the lower portion thereof below thecombustion chamber 9 betweenbottom wall 12 of the latter and thebottom wall 4 of thehousing 3, and lead to theburner 10, whereas at the upper portion thereof the same chambers are in fluid communication with ametal inlet duct 21 for external comburent air. - Duct 21 has its
inlet mouth 22 for external comburent air outside the space or room to be heated where thegas fireplace 1 is located (Figure 2 ), and advantageously extends through a wall P of a building. - The
combustion chamber 9 at itsceiling 15 is in communication with ametal chimney duct 23 arranged to exhaust the flue gases and preferably extends inside theinlet duct 21 for external comburent air, thereby delimiting therewith agap 24 suitable for delimiting a comburent air passage, which passage is in countercurrent heat exchange with the relatively hot flue gases coming from thecombustion chamber 9. As known in the art, thechimney duct 23 ends with anexhaust diffuser 25 beyond theinlet mouth 22 for comburent air. - The
upper ventilation chamber 18 is in communication with both the rear and theside ventilation chambers upper openings 26, only one of which is shown inFigure 2 , above which, in the case in which the gas fireplace is equipped with a hood K, there is preferably provided a space S for conveying room air sucked through one ormore mouths 27 arranged in the hood K and preferably provided withgrid 28, before entering in a ventilation and hearting circuit throughopenings 26. - The ventilation and heating circuit for room air also comprises, besides the
ventilation chambers fan 30, preferably a solenoid valve having a relatively large flow rate, whose suction side is in fluid communication with alower manifold 31, which is in turn in communication with theventilation chambers feeding duct 32 for heated room air located at thebase 2 below thecombustion chamber 9. - The
delivery duct 32 is intercepted by asilencer device 33 of any suitable type designed to eliminate or substantially deaden noises produced in the forced air flow inside thefeeding duct 32. Downstream of thesilencer device 33 there is provided amouth 34 for delivering heated room air into the space to be heated, optionally together with one or more intakes for a duct (not shown in drawings) for heated room air to be supplied to rooms adjacent to the space in which thegas fireplace 1 is located. - At the front of the
gas fireplace 1, preferably above thecombustion chamber 9, ahumidification device 35 can be provided which comprises a water reservoir, that owing to heat exchange with hot flue gases coming from the combustion chamber, as well as to heat exchange with room air conveyed into the space S, in the case of a gas fireplace provided with a hood K, evaporates, thereby causing heated air delivered into the room in which thegas fireplace 1 is located to become less dry, and thus more pleasant. - Relatively cold external comburent air enters the fireplace through one or more wall-type or roof-
type mouths 23, flows throughinlet duct 21 for comburent air, and reaches thecomburent air chamber 20, from where it flows below thecombustion chamber 9 before entering the same from below to feed the combustion of gas supplied toburner 10 through thegas feeding duct 11. - Due to the combustion reaction, relatively hot flue gases are generated in the
combustion chamber 9, which leave the combustion chamber along thechimney 23, to be thus discharged and dispersed in the environment throughdiffusor 25. - Advantageously, since the
chimney duct 23 extends intoinlet duct 21 for external comburent air, as specified above, inlet air is in convective countercurrent heat exchange relationship with the hot flue gases, which results in comburent air flowing through thegap 24 being progressively pre-heated and the outlet flue gases being consequently cooled. - On the contrary, room air to be heated enters the ventilation and heating circuit of the
gas fireplace 1 at theupper openings 26, or, if thegas fireplace 1 is equipped with a hood K, throughmouths 27 provided withgrid 28, formed in the hood K. Owing to the motor-drivenfan 30, room air sucked into the ventilation and heating circuit is forced to flow throughventilation chambers combustion chamber 9 and the comburent air chamber orchambers 20. Inside theventilation chambers walls combustion chamber 9, which are licked by hot flue gases, and thepartitions 19, licked by comburent air which was previously heated due to heat exchange with hot flue gases being discharged through thechimney duct 23. - The delivery mouth of the
fan 30 is connected, through thesilencer device 33 for eliminating any tedious noises generated in the heated air delivery flow, to one or more heated air delivery ducts through which heated air is delivered throughopenings 34 in the room in which thegas fireplace 1 is located, or is also partly supplied through suitable ducts into adjacent rooms. - The above described invention is susceptible to numerous modifications and variations within the scope as defined by the claims.
- Thus, for example, in the ventilation and heating circuit,
side ventilation chambers tubular members 29 extending from one chamber to another through thecombustion chamber 9 at the upper wall orceiling 15 thereof. Moreover,ventilation chambers comburent air chamber 20, rather than being provided between the externalcomburent air chamber 20 and thecombustion chamber 20. - Furthermore, although in the above described embodiment a
chimney duct 23 for discharging flue gases and aninlet duct 21 for comburent air are arranged so as to delimit agap 24 therebetween for comburent air flowing through and being preheated, the present invention also relates to an arrangement comprising a direct intake of comburent environment air, i.e. through an comburentair inlet duct 21 for connecting thecombustion chamber 9 to the external environment without preheating the inlet comburent air along the chimney. - Of course, the
silencer device 33 will also be provided upstream of thesolenoid valve 30, whereby it can operate both on the intake or delivering side thereof.
Claims (11)
- A gas fireplace comprising a support and housing frame (2, 3), a gas combustion chamber (9), at least one chimney duct (23) for releasing flue gases coming from said combustion chamber (9), at least one inlet duct (21) for external comburent air leading to said combustion chamber (9), a ventilation and heating circuit (16, 17a, 17b, 18, 26, 29, 32) designed to suck environment air, and heat and feed it at least partly into the space where the fireplace (1) is located, and at least one motor-driven fan (30) designed to operate in said ventilation and heating circuit (16, 17a, 17b, 18, 26, 29, 32), characterized in that at least one silencer device (33) is provided along said ventilation and heating circuit (16, 17a, 17b, 18, 26, 29, 32).
- A gas fireplace as claimed in claim 1, characterized in that said at least one silencer device (33) is arranged upstream or downstream of a respective motor-driven fan (30).
- A gas fireplace as claimed in claim 1 or 2, characterized in that the or each chimney duct (23) and a respective inlet duct (21) for external comburent air are arranged one inside another thereby delimiting a gap (24) through which a comburent air flow is in countercurrent heat exchange relationship with flue gases flow in said chimney duct (23).
- A gas fireplace as claimed in claim 1 or 2, characterized in that said inlet duct (21) for external comburent air is designed to feed comburent air to said combustion chamber (9) with no pre-heating of the comburent air.
- A gas fireplace as claimed in any previous claim, characterized in that said ventilation and heating circuit comprises at least one ventilation chamber (16, 17a, 17b, 18, 29).
- A gas fireplace as claimed in any previous claim, characterized in that said motor-driven fan (30) has a suction side thereof in fluid communication with at least one ventilation chamber (16, 17a, 17b) and a delivery side thereof in fluid communication with at least one heated room air feeding duct (32).
- A gas fireplace as claimed in any previous claim, characterized in that said at least one ventilation chamber (16, 17a, 17b) is located in heat exchange relationship between said at least one comburent air chamber (20) and said combustion chamber (9).
- A gas fireplace as claimed in any previous claim, characterized in that said at least one ventilation chamber (16, 17a, 17b) is located outside said at least one comburent air chamber (20) and in heat exchange relationship therewith.
- A gas fireplace as claimed in any previous claim, characterized in that it comprises a hood (K) delimiting an upper space (S) for room air to be heated and conveyed to said ventilation and heating circuit (16, 17a, 17b, 18, and 29),
- A gas fireplace as claimed in any previous claim, characterized in that it comprises at least one humidification device (35) for heated air delivered into the room.
- A gas fireplace as claimed in any previous claim, characterized in that said at least one combustion chamber (16, 17a, 17b) of said ventilation and heating circuit in heat exchange relationship with said at least one comburent air chamber (20) and said combustion chamber (9) has a plurality of finnings (A).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000020U ITVR20050020U1 (en) | 2005-07-29 | 2005-07-29 | GAS FIREPLACE |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1748254A2 EP1748254A2 (en) | 2007-01-31 |
EP1748254A3 EP1748254A3 (en) | 2017-01-04 |
EP1748254B1 true EP1748254B1 (en) | 2019-09-04 |
Family
ID=37433640
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06015657.7A Active EP1748254B1 (en) | 2005-07-29 | 2006-07-27 | Gas fireplace |
Country Status (5)
Country | Link |
---|---|
US (1) | US20070044790A1 (en) |
EP (1) | EP1748254B1 (en) |
AU (1) | AU2006203236A1 (en) |
IT (1) | ITVR20050020U1 (en) |
RU (1) | RU2408821C2 (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2464490C (en) * | 2004-04-15 | 2008-03-11 | Stephen Charles Brown | Combustion apparatus for solid fuel |
US20080160894A1 (en) * | 2006-12-30 | 2008-07-03 | H. Alfred Eberhardt | Partitioned chimney cap and fireplace venting system |
US8978639B2 (en) * | 2011-10-14 | 2015-03-17 | Hearth & Home Technologies, Inc. | Secondary room air heat exchanger and method of heating secondary room air |
EP2607788A1 (en) * | 2011-12-20 | 2013-06-26 | Rudy Cyris | Heating device with very little depth and with extended vision |
KR200474068Y1 (en) * | 2013-03-18 | 2014-08-19 | ź¹ķģ | The Fireplace Functioning As Heat Exchange Ventilation |
WO2015191786A1 (en) * | 2014-06-10 | 2015-12-17 | Wet | Heater with flame display |
CN104089302B (en) * | 2014-07-19 | 2016-04-20 | é¶å·åčå·„äøäŗ§åč®¾č®”ęéå ¬åø | A kind of automatic biological material fireplace |
CN105299876B (en) * | 2015-12-04 | 2018-06-05 | ęé½åéēµåęéč“£ä»»å ¬åø | A kind of gas-heating water heater for strengthening rate of air circulation |
CA2995879C (en) * | 2017-02-24 | 2020-08-25 | Wolf Steel Ltd. | System and method to cool an exposed surface of an appliance |
PL422518A1 (en) * | 2017-08-10 | 2019-02-11 | Jacek Piotrowicz | Fireplace heating with air coil |
US11242997B2 (en) * | 2019-09-12 | 2022-02-08 | K C Grace | Portable propane fuel heater assembly |
FR3102233A1 (en) * | 2019-10-22 | 2021-04-23 | Atelier Dominique Imbert | Hanging fireplace |
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US4285327A (en) * | 1979-01-04 | 1981-08-25 | Cebu Corporation | Firebox refractory floor |
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US3654913A (en) * | 1970-01-30 | 1972-04-11 | Preway Inc | Gas-burning wall fireplace |
US4019492A (en) * | 1975-02-04 | 1977-04-26 | Rush Joseph A | Method and apparatus for automatic furnace |
US4174701A (en) * | 1977-05-03 | 1979-11-20 | Gneiting Thayne R | Fireplace system |
US4176652A (en) * | 1977-08-19 | 1979-12-04 | Verland V. Berg | Free standing fireplace |
GB8617519D0 (en) * | 1986-07-17 | 1986-08-28 | Focal Point Fires Ltd | Flues |
GB2201239A (en) * | 1987-01-16 | 1988-08-24 | Strax Distribution Limited | Extraction system for a gas fire or other appliance |
US5062790A (en) * | 1990-03-09 | 1991-11-05 | Lennox Industries Inc. | Burner sound reduction enclosure |
US5647342A (en) * | 1994-04-21 | 1997-07-15 | Lennox Industries Inc. | Gas operated fireplace assembly |
US6216687B1 (en) * | 1996-03-22 | 2001-04-17 | The Majestic Products Company | Unvented heating appliance having system for reducing undesirable combustion products |
US5983890A (en) * | 1998-01-09 | 1999-11-16 | Canadian Gas Research Institute | Fireplace having multi-zone heating control |
CA2229254C (en) * | 1998-02-12 | 2006-02-14 | R-Co Inc. | Gas fireplace |
US6295981B1 (en) * | 1999-01-13 | 2001-10-02 | Cfm Majestic Inc. | Fireplace with vertical or horizontal venting |
CA2305124A1 (en) * | 1999-04-15 | 2000-10-15 | Steve Taylor | Humidifier |
-
2005
- 2005-07-29 IT IT000020U patent/ITVR20050020U1/en unknown
-
2006
- 2006-07-27 EP EP06015657.7A patent/EP1748254B1/en active Active
- 2006-07-27 US US11/493,756 patent/US20070044790A1/en not_active Abandoned
- 2006-07-28 RU RU2006127486/03A patent/RU2408821C2/en active
- 2006-07-28 AU AU2006203236A patent/AU2006203236A1/en not_active Abandoned
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4285327A (en) * | 1979-01-04 | 1981-08-25 | Cebu Corporation | Firebox refractory floor |
Also Published As
Publication number | Publication date |
---|---|
EP1748254A3 (en) | 2017-01-04 |
RU2408821C2 (en) | 2011-01-10 |
US20070044790A1 (en) | 2007-03-01 |
RU2006127486A (en) | 2008-02-10 |
ITVR20050020U1 (en) | 2007-01-30 |
AU2006203236A1 (en) | 2007-02-15 |
EP1748254A2 (en) | 2007-01-31 |
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