• 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:

    公开号:DK200800011U1
    申请号:DK200800011U
    申请日:2008-01-19
    公开日:2008-04-11
    发明作者:Joergensen Michael；Soerensen Martin
    申请人:Fire Green Aps；
    IPC主号:
    专利说明:

    DK 2008 00011 U3
    Apparatus for combustion of various oil types
    FIELD OF THE INVENTION
    The present invention relates to an apparatus for combustion of various oil types of the type typically used in heating systems and the like.
    BACKGROUND OF THE INVENTION
    It is generally known to use apparatus for combustion of oil, e.g. refined fuel oils.
    It is further known in the art to provide apparatus suitable for combustion of other oil types such as e.g. oils from plants or plant material, such as oil derived from rapeseed, sunflower and other plants with relatively high oil content. In some appliances, waste oils or used oils can also be used for combustion, where the waste oil can be obtained from used engine oils and the like.
    These apparatus according to the art are typically constructed by providing a burner assembly mounted to or connected to a boiler or tub. In order to be able to use other types of oils than the oil for which the burner assembly is designed, a pretreatment unit may be provided to treat the alternative oil in such a way that it is suitable for use in the oil combustion apparatus. Such a pretreatment unit is typically arranged outside the oil combustion unit and will typically comprise means for heating the oil to increase the viscosity thereby providing an improved combustion of the plant or waste oil.
    The known types of apparatus for combustion of oils other than the hydrocarbon-based oils are traditionally used in relatively large boiler plants, such as central heating plants, in that high viscous oils are usually cheaper than normal oils for lower viscosity heating, but where the high viscous, cheaper oils usually require special pre-treatment installations that can be too expensive for private use compared to the savings that can be achieved in a normal private home system.
    2 DK 2008 00011 U3
    The ever-increasing oil prices combined with environmental aspects, which also in some regions lead to special taxes imposed on more polluting plants, have created a market and a need for the use of alternative oils in private plants at affordable prices.
    This need has been met by various devices, all of which so far include one or more disadvantages related to the feasibility of burning these alternative oils.
    One of the major disadvantages of the known devices is the fact that depending on the oil used, they all tend to develop relatively large amounts of soot. The soiling creates a number of problems. First, the efficiency with which the burner assembly was constructed cannot be preserved in length, as the soot will reduce the effective combustion of the oils and thus the efficiency, ie. energy performance, for the oil per unit over time. This requires the system to be stopped and cleaned at regular intervals so that the desired efficiency without pollution can be achieved during oil combustion. When rapeseed oil is used, it is typically necessary to clean the nozzles and the interior of the burner, especially the combustion chamber, for every 100-150 liters of consumed oil, and in the case of light fuel oils, 5-800 kilos of oil can be burned before the need arises to clean the combustor or boiler. . The rapid degradation of energy performance leads to a waste of potential energy, since the used oil could be more utilized, ie. more heat energy could be derived from the amount of oil consumed. In addition, service costs are relatively high.
    Objects of the Invention
    Accordingly, the object of the present invention is to overcome these drawbacks and, in turn, to provide an apparatus in which the energy performance is greatly increased, while at the same time improving the cleanliness of the combustion process to minimize the environmental impact of the oil combustion process and the need to clean the combustion apparatus. and / or the boiler at the same time only much larger spaces are needed.
    3 DK 2008 00011 U3
    Description of the Invention
    The present invention addresses this by providing an apparatus for combustion of various oil types, the apparatus comprising - a nozzle producing an oil mist, 5 - ignition means arranged adjacent the nozzle for igniting the oil mist, - means for supplying combustion air, wherein the means for supplying combustion air comprises an air flow duct in the form of a cylinder, said cylinder having an air inlet opening and an outlet opening arranged at opposite ends of said cylinder, wherein said nozzle and ignition means are arranged within said cylinder and said air and / or mist distribution means in the form of a non-rotatable disc having an outer and inner diameter is arranged in or adjacent the outlet opening, where the disc has a tapered cross-section such that the inner diameter of the disc is closer to the air inlet opening of the cylinder and the outer diameter of the disc is arranged near the outlet port of the cylinder and where multiple blades are arranged radially around the disc 15 to direct the air flow leaving the cylinder.
    By passing the combustion air inside the cylinder past the oil-emitting nozzle and ignition means, it is very easy to control the amount of combustion air fed to the oil so that the optimum amount of air can be provided relative to the amount of oil emitted by the nozzle. Furthermore, by providing air and / or mist distribution means in the form of a disc in which the disc is provided with multiple blades, the air flow during combustion of the oil is optimized such that substantially all mist particles, i.e. oil floating in the combustion air, ignites, thereby achieving maximum energy performance and at the same time dramatically reducing the boiling point.
    25
    Compared with the above mentioned figures for known devices which boil, the present apparatus has e.g. burnt 20-30 tons of light fuels without the need to clean neither the nozzle, ignition means, washer or boiler, whereas the known devices need thorough cleaning after approx. 5-800 kg of 30 same oil type. In the case where the oil from rapeseed oil as mentioned above, 1000-1500 liters of consumed oil require cleaning, whereas with the present device according to the inventive air and / or mist distribution means more than 1500 liters can be burned before it is necessary to clean the nozzle and disc.
    In a further advantageous embodiment, the angle between a longitudinal axis through the air flow duct and the air distribution means is between 60 ° and 80 °, more preferably about 70 °. The conical cross-sectional shape with the angle between 60 ° and 80 ° combined with the blades creates a turbulent and agitated airflow in the immediate vicinity where the atomized oil particles are introduced into the airflow and ignited.
    Known fans arranged in conjunction with an oil nozzle create a substantially laminar air flow, producing a long flame in which oil particles ignite. The present invention, on the other hand, produces a turbulent air stream for combustion in which the flame will tend to have a shape similar to a well-known candle flame form, such that the combustion of the oil mist is very close to 100%, and at the same time the energy direction towards the boiler, the wasted energy due to heat moving in other directions is minimized.
    In addition to the angle in the conical cross-sectional form, the number of blades is very important such that in a further advantageous embodiment of the invention, the number of blades is selected between 7 and 14 blades, more preferably between 8 and 12, and most preferably 10 blades arranged radially around the disc.
    The number of blades is a balance between air resistance and the disc's ability to create a homogeneous, turbulent flow pattern for the fog as it ignites the immediate release of oil with the nozzle. Thorough tests have shown that for most burners, the combination of 10 wings produces a mostly homogeneous fog downstream, with the air resistance of the disc remaining as low as possible. Obviously, the combustion air supply means have bmg to force the air through the cylinder toward the combustion zone, and the less energy wasted by forcing the air toward the disc, the less energy is used to drive the plant. In this connection, measurements on test equipment have shown that the air pressure needed to produce the homogeneous mist can be as low as 0.5 bar, whereas other types of combustion plants of different oil types can use up to 20 bar air pressure for to produce a relatively satisfactory combustion.
    In a further advantageous embodiment, the disc is made of a sheet material, each wing having cross sections having first and second folded portions, the first portion having an angle to the disc and the second portion being parallel to disc. In this way, a relatively simple and reliable manufacturing process is produced, and at the same time having the second bent portion parallel to the disk, ie. the conical cross-sectional shape, and the distance between the disc and the other portion relatively narrow, the combustion air is given a relatively violent influence during its passage of the disc to produce a very well distributed oil mist in front of the nozzle, so as to obtain the thorough combustion of the atomized oil.
    In the art, it is well known to arrange a form of disc pivotally in the path of combustion air. The disc is often arranged such that it is forced to rotate, e.g. by being connected to motor organs. The purpose of this rotatable disc is to generate turbulence and scatter and, optionally, minimize the droplet size discharged through the nozzle of the oil assembly. It is desirable to produce as small droplets as possible, because the smaller the droplets, the more lean and more efficient the combustion becomes.
    A further advantageous aspect of the present invention is the provision of a pretreatment unit wherein the oils are treated such that when they enter the burner assembly, i.e. For this purpose, in a further advantageous embodiment, the oil comprises an oil receiving tank which comprises an inlet and an outlet where the inlet is arranged adjacent the bottom of the tank and the outlet is arranged over the inlet, and furthermore, an heating element is located in the tank at a level above the inlet but below the outlet.
    It is known in the art to place oil receiving tanks before letting the oil into the combustion apparatus and also supplying the oil receiving tank with heating means. In the known devices, oil inlets and oil outlets from the tank are usually disposed at the top of the tank and a suitable heating element is arranged mainly at the bottom of the tank so that as the oil is heated, it will, due to the temperature difference between the colder oil entering in the tank, 6 DK 2008 00011 U3 ascend and be able to pass through the outlet towards the combustion chamber. However, this oil movement is very unstable and requires a certain tank size to ensure that the distance between the oil inlet and the oil outlet is sufficient to ensure that only preheated oil enters the oil outlet. At the same time, as the oil moves upward or downward due to temperature differences and thus density differences, the oil requires heating of the oil to a substantially higher temperature to ensure that the oil withdrawn at the outlet has the desired outlet temperature.
    With the present invention having the oil inlet adjacent the bottom of the tank and the oil heating element adjacent to the bottom, but above the inlet, a one-dimensional fluid flow will occur in the heating tank such that all oil will move in the same direction whereby the colder portion of the oil will be near the bottom. and the warmer with the desired outlet temperature will be found at the top of the tank. It is further improved by using a tank size of a relatively small size, e.g. between 0.5 and 1 liter, more preferably between 0.65 and 0.75 liter. In order to heat such a small amount of oil, thereby obtaining a relatively homogeneous heating of the combustion oil, only a relatively small amount of energy is required. There is also only small amounts of oil in the appliance at all times, which in turn limits the amount of energy needed to operate the appliance and in the event of an accident, e.g. self-ignition or the like, the damage is limited to the limited amount of oil.
    In a further advantageous embodiment, the tank is provided with a lid. In this way, it is achieved that evaporation of oils is kept to a minimum so that bad odor is reduced. Furthermore, providing a lid reduces the risk of ignition of the oil accidentally and further reduces the amount of energy needed to heat the oil, the lid also providing some thermal insulation. The spread of bad odor is particularly undesirable in private facilities, such as homes and the like. When the oil is heated, the amount of volatile, smelly gases increases, thereby increasing the risk of bad odor. By applying the lid to the tank where the heating of the oil occurs, a significant reduction of volatile gases can be obtained, which can escape the oil tank.
    In a further advantageous embodiment of the invention, the distance from the tank outlet to the nozzle is as short as possible, such that the distance between the tank outlet and the nozzle is less than 250 mm, more preferably less than 200 mm and most preferably less than 150 mm. and that the difference in height between the outlet and the nozzle is between 10 and 50 5 mm, preferably less than 25 mm, and further that the pipeline connecting the tank to the nozzle and / or the tank is optionally insulated.
    By arranging the tank very close to the nozzle, ie. at the point where the oil from the tank is atomized and incinerated, the cooling between the storage and the nozzle is greatly reduced so that a higher nozzle temperature can be obtained with less applied heat energy to bring the oil into the tank to the desired temperature. With known devices, it is necessary to heat the oil in the tank to an over-temperature, since the cooling during transport of the oil to the nozzle can lead to a lower temperature, whereby the combustion of the oil is not optimal. Therefore, by reducing the distance between the tank outlet and the nozzle as much as possible, the total energy consumption, especially for heating the oil, can be reduced without risking bringing the oil to the nozzle at too low a temperature. The opposite is actually the case, in that it becomes easier to control the temperature of the nozzle where the atomizing effect is to take place and also the combustion so that an optimum combustion state in or immediately up to the nozzle can be ensured. 20 In a further advantageous embodiment, the apparatus is provided with the pretreatment unit. arranged inside the same housing, the housing being provided only with an opening in the form of an air inlet for supplying air to the combustion air supply means. By providing a housing covering the pretreatment assembly as well as the apparatus as such, several advantages are obtained. First, the volatile gases and bad odor from heating and even preheating the oil before combustion are reduced to a minimum, or completely eliminated, as the combustion air supply means will create a negative pressure inside the housing, so that all gases in other volatile fractions of the oils are fed with the combustion air to 30 combustion chamber. Even in situations where no combustion takes place but where a small amount of oil is present in the tank, the lid of the tank will reduce the evaporation of the volatile gases and fractions of the oil and the substances that cause bad odor will be carried away on due to the draft in the chimney into the combustion chamber and further up into the chimney due to the natural and well-known function of the chimney.
    Although not specifically stated above, it is clear that the apparatus according to the invention is provided with a number of safety measures. In the preheater unit in the tank a thermal protection is installed so that if the oil becomes overheated, all circuits, including the combustion parts of the appliance, are installed. This is done so as not to risk the ignition of volatile fragments in the oil, especially from the superheated oil, inadvertently ignited inside the house thereby producing an explosion. The general design of the apparatus is such that the energy consumption of the apparatus is substantially less than other comparable apparatus, thereby reducing the risk of overheating or generating situations where the use of excess energy causes malfunction. Furthermore, the relatively small size of the tank provides a very limited amount of flammable and volatile materials, so that if for some reason the safety devices built into the apparatus fail to shut down the apparatus, the amount of combustible liquid is very limited.
    In order to also reduce the noise produced by the apparatus, the components are designed to correspond to each other such that failure to fit components does not create noises from e.g. vibration or air flow which is unnecessary in relation to the normal operation of the apparatus.
    With a design as explained above, it is possible to provide appliances that can provide an output of between 70 and 250 kW, but for normal household use the power will be between 70 and 120 kW. To ensure proper operation of the appliance, it is very important to adjust the air supply means to fit the selected nozzle and boiler. The boiler and nozzle will again be selected according to the circumstances depending on the desired energy performance, and regulation of the air supply means is accomplished by simply adjusting a baffle built into the fan such that the desired air flow and air pressure, especially about 0.5 bar , is obtained. Due to the provision of air and / or mist distribution disc, changes in the air flow can be accepted as the air distribution disc provides a very homogeneous generation of an oil particle mist, so as to obtain a substantially complete combustion of all oil particles suspended in mist, essentially regardless of the air pressure. By further heating the oil in the pretreatment unit to a desired viscosity, a substantially pure and complete combustion of the oil components is obtained. Although contamination occurs within the apparatus, it is relatively easy to open the unit and clean the air distribution disc to obtain the optimum conditions for combustion of the air / oil mixture.
    The arrangement of the disc with respect to the nozzle and the ignition means must, under ideal conditions, be such that the inner diameter of the disc is near the outlet of the nozzle. The ignition means usually comprises two electrodes between which a spark is generated. To avoid the spark going elsewhere, ie. in order to maintain the spark between the two electrodes, the distance between the electrodes and the disc must be approx. 3 mm or more.
    Tests have shown that the shape of the resulting flame, ie. when the oil / air mist is ignited, the mold can be compared to the natural flame that occurs e.g. on a candle, and furthermore, temperature measurements across the flame show that a relatively homogeneous temperature is obtained across the flame, indicating that the air / mist distributors achieve a substantially uniform distribution of the oil particles in the fog, thereby achieving optimum combustion of the oil . It has resulted in 20% reduced oil consumption with the present device compared to known devices for the same power. In addition to the output power, there is also a reduction in energy consumption in the apparatus due to the inventive features mentioned above.
    Description of the drawing
    The invention will now be explained with reference to the accompanying drawing, in which: FIG. 1 shows an apparatus according to the invention,
    Fig. 2 shows a section of an apparatus according to the invention where the housing is removed,
    FIG. 3 FIG. 4 FIG. 5 shows a section from above with the housing removed, shows a section of the apparatus from the side, shows a perspective view of the pretreatment unit, 10 DK 2008 00011 U3
    FIG. 6 FIG. 7 FIG. 8 5 FIG. 9 FIG. 10 shows a side view of the pretreatment unit, shows a safety measure arranged inside the pretreatment unit, shows the air and / or fog distributing means, shows a schematic side view of the air and / or fog distributing means, shows the principle of an apparatus including a nozzle, pretreatment unit and safety measures.
    10 Ϊ FIG. 1, an apparatus according to the invention is shown, wherein the parts of the apparatus are covered by a housing 1 together with an air flow duct in the form of a cylinder 7. The air flow duct 7 is suitable for mounting on e.g. an existing boiler system, so that the apparatus according to the invention can use an already existing boiler. Furthermore, a regulator 2 is provided so that any desired temperature can be selected at which the oil type used as the combustion medium can be preheated in the tank.
    Furthermore, an air inlet 6 is provided along with an oil inlet 5 on the front of the unit. In addition, the unit may be provided with an electrical outlet 4 to provide a power outlet for an air compressor if required in connection with increasing the power of the unit by forcing more air through the apparatus.
    When sealing the housing 1, the interior of the apparatus is exposed as shown in FIG. 2. In this image, the pretreatment unit 8 is clearly visible. In the pre-treatment unit, an oil inlet 9 is arranged which is connected to the oil inlet 5 on the exterior of the housing, such that any oil type suitable for use in the device is introduced into the lower section of the pre-treatment 8,
    A heating element 10 is arranged above the oil inlet 9 so that the colder oil entering through the oil inlet 9 will be heated before it goes upwards towards the oil outlet 12, where oil is passed to the nozzle and thus the combustion chamber.
    The pretreatment unit 8 consists of a tank 27 and a lid 28. The lid is provided for a number of reasons, but mainly to avoid evaporation of volatile fractions of the oil, used for combustion, and at the same time to minimize the heat loss to save energy during heating of the oil in the tank 27. In the lid 28 is arranged a liquid level meter 11 which is used to activate the oil pump to allow more oil to enter the tank 8 through the inlet 9. In this way it is possible to always have the optimum amount of oil preheated in the tank ready for burning in the apparatus.
    The air supply means 13 in the form of a fan can also be seen in the right hand side of FIG. 2. When the fan is arranged under the housing 1, during use it will create a negative pressure inside the housing, whereby volatile gases cannot escape the housing, but will be forced into the boiler chamber with the combustion air.
    In FIG. 3 is a top view of the apparatus with the housing removed. In this embodiment, the air duct 7 is mounted on a swing arm 14 such that a flange portion 29 connected to the swing arm and attached to the air duct 7 can be mounted on the boiler as such. The remainder of the apparatus of the invention can then be tilted away from the air duct 7 to perform maintenance as shown in FIG. 4th
    The air duct 7 and the flange plate 29, when the apparatus is mounted on a boiler (not shown), can be pivoted away by means of the swing arm 14 to expose the nozzle, the ignition means 15 and the air and / or mist distribution means 16, I. overall condition, i.e., corresponding to the configuration of FIG. 3, the disc 16 will be substantially flush with the end of the air duct 7, and as shown with reference to FIG. 4, the disc 16 is mounted directly adjacent the outlet of the nozzle immediately up to the ignition means 15.
    The preheated oil from the tank 8 is fed to the nozzle by means of the oil outlet pipe 12 (see FIG. 2) and will be introduced into the nozzle member with the coupling 17, as shown with reference to FIG. 4. From here, the preheated oil will be atomized in the nozzle, and because of the air flow through the air and / or the mist distribution means in the form of the disc 16, it will form into an oil mist which will ignite with the ignition means 15.
    Turning to the depiction of the tank as shown with reference to FIG. 5 and 6, the tank 8 comprises an oil inlet 16, as already explained above, and an oil outlet 12 arranged respectively with the oil inlet at a lower portion of the tank 8 and the oil outlet at an upper portion of the tank 8. Between inlet 9 and outlet 12 there is a heating element 10 for heating the oil which is introduced into the tank 8.
    5 Furthermore, with reference to FIG. 6 it can be seen that the tank can be provided with an inclined bottom 20, such that any residue and particles will be collected at the bottom of the tank 8 where the valve 18 can be opened during maintenance to empty the tank of residues, foreign matter etc. In the shown configuration of the tank 8 according to FIG. 5 and 6, the lid 28, as shown in FIG. 2, is the body. However, it is contemplated that the lid is capable of completely sealing the tank 8 such that bad odor as such cannot escape the tank.
    Referring now to FIG. 7, the bottom of the housing 1 is shown, where it is provided with a tray 21 for collecting possible leakage oil. Furthermore, the leak tray 21 is provided with a level meter 22 which is connected by means of leads 23 to a switching mechanism 15, such that if any oil is collected in the leak tray 21 up to a certain level determined by the level meter 22, the level meter sends a signal to a control unit. , whereby the whole apparatus will shut down until the fault is found, ie. the fault that causes oil to collect in the leak tray; 20 The unit's control unit is connected to the sensors, ie. the level meter both in the leak tray 21 as well as in the tank, such that when the oil combustion uses oil from the tank 8, the level meter mounted in the lid as described above will record that the level is lowered thereby allowing more oil to enter the preheat tank 8 and thereby be ready for combustion in air duct.
    25
    As already mentioned above, preheating of the oil in the tank will be determined according to the specific characteristics of the oil used for combustion and the controller 2, see fig. 1, is used to pre-set the water element 10 in the tank to the desired temperature so that preheating in the tank 8 is performed at the optimum temperature, depending on the oil used for combustion.
    Referring now to FIG. 8, a key key element for achieving the advantages of the present invention is shown in the form of air and mist distribution means in the form of a disk. The disc has a basic conical cross-sectional shape such that the conical cross-sectional shape is defined by an outer and an inner diameter, and the inner diameter is closer to the nozzle member than the outer diameter. The disc 16 is provided with a central aperture 25 in which the nozzle and ignition means are positioned so that the atomized oil particles will be introduced into the air flow in the air duct which, by providing the wings 26, will create an air pattern whereby the combustion air and the diminutive oil particles in the form of a mist will be so effectively blended that a thorough and complete combustion of oil occurs due to the inventive disc. One of the special features of the disc is the manner in which the wings 26 are formed. 11, a cross section through a wing is shown. The blade comprises a curved portion 35 arranged between two substantially equal portions 36, 37. The first section 36 is in the same plane as the tapered cross-sectional shape of the disc, ie. in the plane of the disk, whereas the first bent section 35 is at an angle with this disk shape. The second bent portion 37 is bent relative to the first bent portion 35 such that the second section 37 is substantially parallel to the disc shape 37. Furthermore, by letting the blades arc slightly toward the center, the combustion air is distributed around the atomized oil particles in such a way. , that a complete mixture of oil and air is obtained, thereby facilitating a complete and clean combustion.
    Turning now to FIG. 9, a principle sketch of the disk is shown, with the disk 16 with its wings 26 arranged at an angle 27 with respect to a longitudinal axis of symmetry 30. The angle is typically chosen between 60 and 80 °, and an angle of approx. In practice, 70 ”has shown very good results when it comes to the quality of combustion for a very large spectrum of different oils. 9, a flange 24 is provided for attaching the disc 16 to the nozzle, but in other embodiments of the invention it is contemplated that the disc is made as an integral part of the air duct 7, for example, by attaching the disc to the outlet end of the air duct, thereby avoiding swr the flange portion 24 being attached to the nozzle. A further advantage of attaching the disc 16 to the air duct is that when the apparatus according to the invention is provided with a swing arm 14, as explained with reference to Figs. 3 and 4, the disc by swinging the device away becomes completely accessible just like the nozzle and the ignition means. , which in the embodiment of FIG. 4 is partially enclosed by the washer 16. By separating the washer and the nozzle and ignition means, the part becomes easier to clean, so from the perspective, the configuration in which the washer 16 is attached to the air duct 7 provides certain cleaning advantages.
    Referring now to FIG. 10, the principle behind the oil installation in the apparatus according to the invention will be explained. The oil is forced into the tank 8 by means of the oil inlet 8. The heating element will heat the oil such that the preheated oil will leave the tank 8 by means of the outlet 12 and be fed into the nozzle inlet 17 for combustion. The air supply means will supply air inside the unit in the direction 31 such that as oil and air enter the nozzle 28, a fog will be created whereby the ignition means (not shown) will ignite the fog and produce a substantially complete combustion of the atomized oil particles. If there is a leak in some of the connections between the tank, inlet, outlet or other, the leak tray 21 will collect the oil spill, and after a certain amount of oil is collected in the leak tray 21, the level gauge 22 will be activated and send a signal at conduit means 23 to the control unit, after which the entire unit will be shut down. The control unit will also output a warning signal so that appropriate maintenance and service can be performed in response to the generated signal.
    A further important aspect of the invention is the fact that the distance 29 between the nozzle 28 and the tank outlet 12 is kept to a minimum so that the preheated oil in the tank 8 during its passage of the outlet pipe 12 towards the nozzle is not cooled, which will lead to poor combustion. when ignited upon departure from the nozzle. This is due to the fact that it is more difficult to produce a very fine atomized mist with low viscous oils compared to high viscous oils at low air pressure, such that by maintaining a relatively high and preset temperature of the oil corresponding to the optimum temperature for the oil type concerned can optimize mist formation and thereby the resulting combustion. In practice, for practical reasons, the distance 29 is set to be between 1 and 5 cm, preferably about 3 cm. The total distance from the outlet of the tank 8 to the inlet into the nozzle should also be kept as short as possible, but for practical reasons due to other components of the unit, will be about 20 or more, preferably down to approx. 12.5 cm. At these distances, experiments show that there is no significant cooling affecting mist formation in the nozzle, so that optimum combustion results are achieved, combined with a minimum energy consumption in the preheater unit.
    According to the invention, the apparatus can be designed to have a so-called boiler power of between 15 and 40 kW, where the air in the air duct is given a pressure of 0.5 bar relative to the ambient air pressure. The oil types which can be used with the present invention are very different and all known energy-containing oils can be used with the present apparatus, such as environmentally friendly, non-fossil oils obtained from plants or animals can be used, as can fossil fuels with the The present invention.
    Although various embodiments of the invention are described above, the invention as such should not be limited by the examples described, but should be limited only by the scope of protection provided by the appended claims.
    15
    权利要求:
    Claims (9)
    [1]
    An apparatus for combustion of various types of oil, the apparatus comprising - a nozzle producing an oil mist, - ignition means arranged adjacent the oil mist ignition nozzle, - means for supplying combustion air, characterized in that the means for supplying combustion air comprise an air stream. in the form of a cylinder, said cylinder having an air inlet opening and an outlet opening arranged at opposite ends of the cylinder, and wherein the nozzle and ignition means are arranged inside the cylinder, and wherein air and / or mist distribution means in the form of a non-rotatable disc having a outer and inner diameters are arranged in or adjacent the outlet opening, where the disc has a tapered cross-section such that the inner diameter of the disc is closer to the air inlet opening of the cylinder, and the outer diameter of the disc is arranged near the outlet opening of the cylinder and wherein several vanes are arranged radially around the disc to guide the air flow; leaving the cylinder.
    [2]
    Apparatus according to claim 1, characterized in that the angle between a longitudinal axis through the air flow passage and the air distribution means is between 60 ° and 80 °, more preferably about 70 °.
    [3]
    Apparatus according to claim 1, characterized in that between 7 and 14 wings, more preferably between 8 and 12, and most preferably 10 wings are arranged radially around the disc.
    [4]
    Apparatus according to claim 3, characterized in that the disc is made of a sheet material, each wing having cross sections having first and second folded portions, the first portion having an angle to the disc and the second portion being parallel. with the dial.
    [5]
    Apparatus according to claim 1, characterized in that the apparatus comprises a pretreatment unit comprising an oil receiving tank, said tank comprising an inlet and an outlet, wherein the inlet is arranged adjacent the bottom of the tank and the outlet is arranged over the inlet, and further wherein a heating element is placed in the tank at a level above the inlet but below the outlet.
    [6]
    Apparatus according to claim 5, wherein the tank has a volume of between 0.5 and 1.0 L, more preferably 0.65 to 0.75 L.
    [7]
    Apparatus according to claim 5, wherein the tank is provided with a lid.
    [8]
    Apparatus according to claim 5, wherein the distance from the tank outlet to the nozzle is as short as possible such that the distance between the tank outlet and the nozzle is less than 250 mm, more preferably less than 200 mm and most preferably less than 150 mm, and that the difference in the height between the outlet and the nozzle is between 10 and 50 mm, preferably less than 25 mm, and further that the pipeline connecting the tank to the nozzle, 15 and / or the tank is optionally insulated.
    [9]
    Apparatus according to any one of the preceding claims, characterized in that the apparatus, together with the pretreatment unit, is arranged inside the same housing, the housing being provided with only an opening in the form of an air inlet for supplying air to the combustion air supply means.
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    同族专利:
    公开号 | 公开日
    DK200800011U3|2008-05-23|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2009-12-11| UYT| Decision on examination: utility model terminated|
    优先权:
    申请号 | 申请日 | 专利标题
    DKPA200601466|2006-11-09|
    DK200800011U|DK200800011U3|2006-11-09|2008-01-19|Oil firing unit for combustion of multiple oil types|DK200800011U| DK200800011U3|2006-11-09|2008-01-19|Oil firing unit for combustion of multiple oil types|
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