• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a fireplace block for a gas-fired fireplace, which is made of a non-combustible material and is provided with an appearance that corresponds to the appearance of a wood block, the fireplace block being internally provided with a gas-carrying body made of a thin-walled resilient tube which is connected within the hearth block to a gas supply line to be connected to the hearth block. The invention further relates to a method of manufacturing such a fireplace block.
    公开号:BE1020195A3
    申请号:E2011/0505
    申请日:2011-08-25
    公开日:2013-06-04
    发明作者:Cornelis Christiaan Hund Adriaan
    申请人:Cornelis Christiaan Hund Adriaan；
    IPC主号:
    专利说明:

    Fireplace block for a gas-fired fireplace and method for its manufacture
    The invention relates to a fireplace block for a gas-fired fireplace, which is made of a non-combustible material and is provided with an appearance corresponding to the appearance of a wood block, the fireplace block being provided with a gas-carrying body on its inside, which is connected within the hearth block to a gas supply line connected to the hearth block, which gas-carrying body is provided with outflow openings for the gas to flow out.
    Gas-fired fireplaces containing logs that resemble logs are known. The purpose of these logs is to provide the comfort of a gas fireplace with the appearance of a wood-burning fireplace, where the gas flames play along the fake logs and thus create the impression of burning logs.
    A problem that occurs with the known fireplaces with fake fire blocks is that it is difficult to let the flames run along the fire blocks. However, this is necessary to create the impression that the flame comes from the hearth block. However, it is often necessary to use relatively large flames to allow them to form around the hearth.
    Gas-fired fireplaces are also known with fake fire blocks, with a burner integrated into the fire blocks. US patent application 2003/0039933 describes such a fireplace block. However, the problem here arises that the burner and the associated gas supply line are made of a material other than the hearth block and it is difficult to make the connection of the burner to the material of the hearth block gas-tight. Partly because the material of the burner and the hearth block is different, due to the different coefficient of thermal expansion, there may be space between the burner and the material of the hearth block, as a result of which gas may escape in an undesirable manner. Not only is this possible due to differences in coefficient of thermal expansion, but the fireplace block and gas supply pipe must also be handled with care, because shocks or bumps on the gas supply pipe can lead to the release of the bond between the pipe and the burner on the one hand and the material of the fireplace block on the other. This too can lead to a space between the hearth block and the burner and the gas supply line, which spaces can fill with outflowing gas. This can lead to unwanted and dangerous situations.
    It is an object of the present invention to provide a fireplace block for a gas-fired fireplace of the type mentioned in the introduction, which overcomes these disadvantages.
    It is a further object of the present invention to provide a method for the manufacture of such a fireplace block. These objects are achieved by a hearth block with the features of claim 1 and a method with the features of 7. Favorable embodiments are provided by the dependent claims.
    A hearth block according to the invention is characterized in that the gas-carrying body which is connected inside the hearth block to a gas supply line connected to the hearth block, comprises a thin-walled resilient tube which rests against the interior of the hearth block with its entire outer wall and which is provided with outflow openings each connecting to a channel through the hearth block to its outer surface. Because the gas-carrying body comprises a thin-walled resilient tube, differences in thermal expansion coefficients between the thin-walled resilient tube and the core material of a hearth block will not lead to internal openings between the hearth block and the thin-walled resilient tube, because the thin-walled resilient tube can yield and with expansion and contraction will continue to follow the interior of the hearth block.
    In addition, any loads that would be exerted on the gas supply line have no or little influence on the thin-walled resilient tube because that load will not be transferred thereon due to the thin-walled and resilient nature of this tube. Furthermore, since the outflow openings of the thin-walled resilient tube connect to a channel that goes through the hearth block to the outer surface of the hearth block, both the thin-walled resilient tube and the adjoining part of the hearth block will also be much less sensitive to heating up and therefore to temperature fluctuations. because the flame formation takes place on the outer surface of the hearth block. In a favorable embodiment of the fireplace block, each channel has an outwardly conical course. As a result, the outflow velocity of the gas to the outside decreases, which has a favorable effect on flame formation.
    In a preferred embodiment of the hearth block according to the invention, the thin-walled resilient tube of the gas-carrying body is ribbed. As a result, the resilient nature and flexibility of the tube is further increased, which not only has a favorable influence on its permanent abutment against the interior of the hearth block, but also offers the possibility of making the gas-carrying body even more easily in turns. inside the hearth. This increases the flexibility in designing the shape of the flame on the outside of the hearth block.
    This flexibility can also and even further be increased if the gas-carrying body comprises several thin-walled resilient tubes, each of which is connected to the gas supply line. These multiple thin-walled resilient tubes can each be directly connected to the gas supply line, for example by means of a manifold on the gas supply line, but it is also possible that these multiple thin-walled resilient tubes are mutually connected gas-conducting.
    It is particularly advantageous if the fireplace block according to the invention is mainly made of a heat-insulating material. As a result, the gas-carrying body will be insulated from the flame and, as a result, the interior of the hearth block will be heated less by the flame and, consequently, the temperature of the gas-carrying body and the immediate surroundings thereof will not or hardly be subject to temperature fluctuations. Because the outlet opening draws little heat from the flame base due to its insulation, little soot and no coal formation take place.
    The flame formation can be improved by providing the hearth block on its surface with at least one slot into which at least one channel opens, wherein at least one slot comprises gas-distributing material. This allows the gas to be spread over the slot and the outflowing gas thereby forms a fan-shaped flame.
    With a fireplace block according to the invention, the resemblance with real burning firewood becomes very strong. Because the flames also occur higher in the hearth, a visually-filling flame set can be created with less energy. The emission value of soot and CO is lower than that of visually equivalent gas-fired fireplaces according to the prior art.
    A method for manufacturing a fireplace block according to the invention comprises the steps as defined in claim 7.
    By using a pourable cold-curing mixture as material for the hearth block, the gas-carrying body with the gas supply line can be arranged in a simple manner.
    When the mold is made of elastic plastic by making a print of a wood block, the hearth block can ultimately be given a very realistic appearance similar to a wood block.
    The slots to be provided in that fireplace block can be provided in a simple manner by providing a strip of the correct dimensions at the intended locations in the mold.
    The mixture is formulated in a particularly advantageous manner such that, after curing, it produces a ceramic insulating material.
    This is both heat-resistant and insulating, as a result of which the material is not affected by the flames playing alongside it, and neither the gas-carrying body and the gas supply line are subjected to considerable temperature fluctuations.
    By forming the outflow channels with the aid of a conical diamond file, the outflow channels can be manufactured such that they widen outwards. With such a file, outflow channels of different diameter can also be made. This also makes it possible to influence the shape of the flame.
    Loosely placing metal fiber in an inserted slot causes the gas that comes out of the outflow openings in the slot to spread over the slot, whereby fan-shaped flames can be created. Because, for example, various outflow openings have been given a different diameter, the flame can be varied in size and intensity along the length of the slot. Due to the metal fiber arranged in the slot, this variation in intensity will have a smooth course. The present invention will now be further elucidated partly with reference to the accompanying drawing in which:
    Figure 1 shows a schematic representation of a section through a fireplace block according to the invention; and
    Figure 2 is an enlarged view of a detail of
    Figure 1.
    Figure 1 schematically shows an example of an embodiment of fireplace block 1 according to the invention in cross section. Fireplace block 1 comprises a firebox block body 2 of cast material in which the gas supply line 3 with gas-carrying bodies 5 and 6 of a thin-walled resilient tube are cast. The hearth block body 2 is made of a ceramic insulating material that is cast in a mold and cured therein. The method for manufacturing the fireplace block will be explained later in this description. The gas supply pipe 3 is located partly within the hearth block body 2 and partly outside the hearth block body 2. The part outside the hearth block 2 serves for connection to a reservoir or a gas pipeline. The part that is poured into hearth block body 2 is provided at the end that is inside the hearth block body 2 with a manifold 4, which in the present embodiment according to the invention has the shape of a T-piece which is welded to the gas supply line 3 and is provided with two opposite connecting parts. A piece of a metal tube, in this example an aluminum tube, is slid over each of the connecting parts, forming the gas-carrying bodies 5, 6.
    The gas-carrying bodies 5, 6 are glued to the associated ends of the manifold 4 and the ends 8 of the gas-carrying bodies 5, 6 are sealed with heat-resistant aluminum adhesive tape. The aluminum tubes from which the gas-carrying bodies 5, 6 are made are thin-walled resilient tubes with a ribbed wall and can be laid straight or in bends, depending on the desired flame shape or the shape of the hearth block body 2. The gas supply line 3, the manifold 4 and the gas-carrying bodies 5, 6 are cast into the fireplace block. As a result, the gas supply line 3, the manifold 4 and the gas-carrying bodies 5, 6 connect to the molded hearth block body 2 without internal cavity. Because the gas-carrying bodies 5, 6 are made of thin-walled resilient tubes, they are flexible. As a result, a force which may be inadvertently exerted on the gas supply line 3 will not or hardly be transmitted via the manifold 4 to the gas-carrying bodies 5, 6. Moreover, the external surface of the gas-carrying bodies 5, 6 is considerable due to the ridges present therein. enlarged so that any adhesion with the material of the hearth block body 2 is thereby strengthened. Moreover, because the wall of the tube is thin, the flexibility of the tube is once again too good.
    In addition, the ridges give extra strength to the thin-walled resilient tube, from which the gas-carrying bodies 5, 6 are made. As a result, there is no risk that hollow spaces will form between the gas-carrying bodies 5, 6 and the wooden block body 2 in which gas can collect. One or more slots 7 are provided on the surface of the wooden block 1.
    Figure 2 shows a part of the hearth block body 2 on a larger scale. Figure 2 shows how channels 9 run between gas-carrying body 5 and the bottom of the slot. The channels 9, two of which are shown in Figure 2, designated 9 'and 9' 'respectively, whereby gas is transported from the gas-forming body 5 via the channels 9', 9 '' to the slot 7 during operation. 7, metal fibers 10 are provided which ensure that the gas that ends up in slot 7 spreads over slot 7.
    If now the hearth block according to the present invention forms part of an open hearth and gas is supplied via supply line 3 and is transported via manifold 4 to gas-carrying bodies 5 and 6 and ultimately flows out through this via channels 9 into slot 7 and there to ignite there If the gas is distributed evenly through slot 7, a flame will be created there locally in the form roughly of slot 7, which will therefore have an elongated course. Depending on the different diameters of the channels 9, this flame can become higher or lower. This means that a very real shining log can be simulated. Because now the material of the hearth block body 2 has heat-insulating properties, the heat of the gas flame will hardly or not at all reach the gas-carrying body, so that it will not be subject to temperature fluctuations
    Because, as previously stated, the gas-carrying bodies 5, 6 is also not subjected to any unintended external shock or impact forces, a very stable situation has been created and the only place where the gas can flow out of the gas-carrying body will be the channels. 9 are and will remain and there will be no further openings between the gas-carrying body 5, 6 and the fireplace block body 2 which could fill with gas.
    The gas flows through the conical openings 9 in the slot 7 and will therefore have a low speed when arriving in slot 7. This prevents a separate flame from arising per outflow channel, which would not form a natural image of a burning log. The gas is further spread in slot 7 by the metal fibers arranged there, whereby the gas is spread fairly evenly over slot 7. By varying the diameter of the outflow openings 9, a varying course of the flame size in slot 7 can be created, however, this course will be a smooth course because of the aforementioned distribution of the outflowing gas over the slot 7 by the metal fibers present there.
    An example of a method according to the invention for manufacturing a fireplace block according to the invention will now be discussed. The hearth blocks are formed in a silicone rubber mold. The silicone rubber mold is formed around a beautiful real wood hearth block and the imprint of this hearth block thus determines the shape of the final hearth block according to the invention in the rubber mold. In places where later flame formation is desired, a plastic strip is poured into the mold such that a slot is formed in the fireplace block, for example, 3 mm wide and 5 mm deep.
    The gas-carrying body with the gas supply pipe is formed as follows. A short metal thin-walled tube with an outside diameter of, for example, 30 mm and a length of 30 mm and a wall thickness of 1 mm is welded in the middle to a gas supply tube with a diameter of 10 mm and sufficient length so that it can protrude beyond the hearth block , for example 20 cm. A piece of aluminum tube with an inner diameter of 30.5 mm and, for example, a length of 120 mm, is slid over both ends of the short metal tube, which serves as a manifold. This aluminum tube is a so-called corrugated tube and is thin-walled and resilient. Because of the ridges, the tube has a good resistance to lateral compression and furthermore forms a large adhesive surface for the material to be cast. In the example described, these aluminum tubes are the gas-carrying bodies 5, 6. The ends of the gas-carrying bodies are sealed with heat-resistant aluminum adhesive tape. The two pieces of aluminum tube are glued to the manifold 4 in a gas-tight manner. This creates two gas-carrying bodies 5, 6 with a total length of approximately 240 mm in the form of a long closed aluminum cylinder with a fixed gas supply tube attached thereto.
    The material of the hearth block body 2 is a ceramic insulating material that starts as a thick liquid mass and can therefore be poured into the mold. Because a harder has been added, this mass will solidify after about an hour. The mass is composed as follows. Ceramic fibers, silicate sol, water and magnesium oxide are mixed in a mixing vessel to form a thick liquid mass. Ammonium chloride is added to this.
    Composition: 1 kg silicate sol 675 g water 300 g rock wool 375 g ceramic fiber 12 g magnesium oxide 2.5 g ammonium chloride 20 g bentone 25 g ocher
    This mixture has the property of becoming stiff after about an hour. The addition "ocher" described in the recipe is intended to thoroughly pigment the ceramic fiber material. It colors the entire fiber material in wood color. Any damage to the block shows wood color and therefore does not stand out.
    The mold is filled halfway with the mixture and the aluminum tube consisting of gas supply line 3, manifold 4 and gas-carrying bodies 5f 6 is pressed in such a way that good embedding is achieved. This whole is kept in position by means of a few external support points. The 10 mm metal tube protrudes from the mold at the top and can later be connected to an external gas supply. The mold is now filled with the mixture. After eight hours the mixture is completely form-retaining and the ceramic log can be taken out of the mold.
    The wet ceramic wood block is dried at 50 ° C. After drying, the block is immersed in a solution of 30% silicate sol and 70% water. A first pigmentation is applied over this. Again the block is dried at 50 ° C. The silicate sol in water solution migrates to the outside of the ceramic block and forms a hard crust on the outside. The final decorative color is applied to this dry block. The color pigments used are so-called color stains, as is commonly used in the ceramic industry to color glazes.
    The dry block is placed in a container. Holes through the ceramics and in the aluminum tube are made in the molded slots with a gap of 15 mm with the aid of a conical diamond file. The drilling depth determines the diameter of the hole in the aluminum tube, this allows the flame size to be determined as required.
    The slots are then loosely filled with metal fiber.
    This filling spreads the outflowing gas over a greater distance in the slot.
    Because the combustion takes place 10 cm above the visual bottom of the fireplace, the bottom of the fireplace becomes available for decorative effects.
    The example of an embodiment of the invention described above comprises two gas-carrying bodies. It will be clear that also several gas-carrying bodies according to the invention spread over the hearth block are possible. The described example of an embodiment of the invention as well as the described example of the method for manufacturing the fireplace block according to the invention must be understood as an example and not as a limitation of the invention.
    List of reference numbers: 1 hearth block 2 hearth block body 3 gas supply pipe 4 manifold 5,6 gas-carrying body 7 slot 8 closure of 5,6 9,9 ', 9' 'channels 10 metal fibers
    权利要求:
    Claims (13)
    [1]
    A fireplace block (1) for a gas-fired fireplace, which is made of a non-combustible material and has an appearance that corresponds to the appearance of a wood block, wherein the fireplace block (1) is provided with a gas-carrying interior. body (5, 6) which is connected within the hearth block (1) to a gas supply line (3) which can be connected to the hearth block (1), which gas-carrying body is provided with outflow openings for the gas to flow out, characterized in in that the gas-carrying body (5, 6) comprises a thin-walled resilient tube which rests with its entire outer wall against the interior (2) of the hearth block (1) and wherein the outflow openings each connect to a channel (9, 9 ', 9' ') through the hearth block (1) to the outer surface thereof.
    [2]
    Fireplace block (1) according to claim 1, characterized in that each channel (9, 9 ', 9 ") has an outwardly conical shape.
    [3]
    Fireplace block (1) according to claim 1 or 2, characterized in that the thin-walled resilient tube of the gas-carrying body (5, 6) is ribbed.
    [4]
    Fireplace block (1) according to one of claims 1 to 3, characterized in that the gas-carrying body (5, 6) comprises more thin-walled resilient tubes, each of which is connected to the gas supply line (3).
    [5]
    Fireplace block (1) according to one of claims 1 to 4, characterized in that the firebox block (1) comprises a firebox body (2) made of a heat-insulating material.
    [6]
    Fireplace block (1) according to one of claims 1 to 5, characterized in that the fireplace block body (2) is provided on its surface with at least one slot (7) and at least one channel (9, 9 ', 9 ''), wherein at least one slot (7) comprises gas-distributing material (10).
    [7]
    Method for manufacturing a fireplace block (1) according to one of claims 1 to 6, characterized in that the method comprises the following steps: a) manufacturing a mold; b) manufacturing a gas-carrying body (5, 6) with a gas supply line (3) by sliding a thin-walled resilient tube over one end thereof and gluing it gas-tightly, the other end of the thin-walled resilient tube being shut up; c) preparing a pourable curing mixture; d) partially filling the mold with the mixture; e) placing the gas-carrying body (5, 6) in the mold with the gas supply line (3); f) filling the mold with the mixture; h) after curing, taking the cured block out of the mold: i) allowing the cured block to dry and applying color pigments; and j) manufacturing the outflow channels (9, 9 ', 9' ').
    [8]
    A method according to claim 7, characterized in that the step a) comprises the step of: a1) manufacturing the mold from an elastic plastic by making an impression of a wood block.
    [9]
    Method according to one of claims 7 or 8, characterized in that at least one strip is provided in the mold, each for forming a slot 7.
    [10]
    Method according to one of claims 7 to 9, characterized in that the mixture produces a ceramic insulating material.
    [11]
    Method according to one of claims 7 to 10, characterized in that the outflow channels (9, 9 ', 9' ') are formed with the aid of a conical diamond file.
    [12]
    Method according to one of claims 9 to 11, characterized in that metal fiber (10) is loosely placed in the at least one slot (7).
    [13]
    Method according to one of claims 7 to 12, characterized in that the step i) comprises the following steps: 11. drying the hearth block (1) at 50 ° C; 12. immersing the block in a solution of 30% silicate sol and 70% water; 13. applying a first pigmentation; 14. drying the hearth block (1) again at 50 ° C; and 15. applying a definitive, decorative color.
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    同族专利:
    公开号 | 公开日
    NL2005264C2|2012-02-28|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    BE770101A|1971-07-16|1971-12-01|Norel Lubert Van|GAS FIREPLACE EQUIPPED AS IMITATION WOOD FIRE.|
    US3853309A|1972-03-20|1974-12-10|C Widmer|Components using cast-in cooling tubes|
    US4179103A|1977-02-10|1979-12-18|L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude|Means for injecting gas into a molten metal|
    US6139786A|1989-02-09|2000-10-31|Corry; Arthur A.|Method of forming a flexible mold and resulting article|
    WO1999002924A1|1997-07-10|1999-01-21|Lodestar Delta Limited|Burner system|
    US20030039933A1|2000-01-13|2003-02-27|Lyons David Charles|Burner-log element|
    US20030196774A1|2001-11-29|2003-10-23|Grigoriy Grinberg|Method to incorporate cooling lines in a spray-formed article|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    NL2005264A|NL2005264C2|2010-08-25|2010-08-25|FIREPLACE FOR A GAS-FIRED FIREPLACE AND METHOD FOR MANUFACTURING IT.|
    NL2005264|2010-08-25|
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