EP3234463A1

EP3234463A1 - Burner apparatus and method for optimizing a burner apparatus

Info

Publication number: EP3234463A1
Application number: EP15808168.7A
Authority: EP
Inventors: Harshit Gupta; Nijso Beishuizen; Gerrit Jan Feberwee; Danny Leerkes; Gordy Koellmann
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2014-12-16
Filing date: 2015-12-10
Publication date: 2017-10-25
Anticipated expiration: 2035-12-10
Also published as: EP3234463B1; WO2016096598A1; DE102014226060A1

Abstract

Disclosed is a burner apparatus, in particular a gas burner apparatus, comprising at least one distributor unit (10a-10g) that has a plurality of holes (12a-12g) for a combustion fluid, and comprising at least one combustion optimization unit (14a-14g) which is provided for optimizing combustion and which includes at least one structural unit (18a-18f) that is located at a discharge end (16a-16g) of the distributor unit (10a-10g) and has a plurality of additional holes (20a-20f).

Description

description

Burner device and method for optimizing a burner device

State of the art

Gas burners with a distributor unit are known from the prior art, which have a multiplicity of passage openings for a combustion fluid.

Disclosure of the invention

A burner device, in particular a gas burner device, is proposed, having at least one distributor unit, which has a multiplicity of passage openings, in particular at least 20, advantageously at least 50, preferably at least 100 and particularly preferably at least 200

Through openings, for a combustion fluid, in particular a combustion mixture and preferably a fuel gas-air mixture, and having at least one combustion optimization unit, which is intended to optimize combustion, and which at least one disposed on an outlet side of the distributor unit structural unit having a plurality of further passage openings, in particular at least 20, advantageously at least 50, preferably at least 100 and particularly preferably at least 200 further passage openings.

In this context, a "burner device" is to be understood as meaning, in particular, at least one part, in particular a subassembly, of a burner, in particular of a gas burner. nerve device also the entire burner, in particular the entire gas burner, include. The burner device is in particular intended to burn a combustion fluid and in particular to generate at least one heating flame. The term "provided" should be understood to mean in particular specially programmed, designed and / or equipped.Assuming that an object is intended for a specific function should in particular mean that the object fulfills this specific function in at least one application and / or A "distributor unit" should be understood to mean, in particular, a unit which comprises at least one distributor element and which is intended to heat the combustion fluid, at least substantially uniformly, over a defined region, in particular a combustion zone, of the burner device to distribute, which in particular a uniform Heizflammenfront can be generated. In particular, the distributor unit and / or the distributor element comprises an inlet side, in particular facing an interior, and an outlet side, in particular facing away from the interior. In particular, the combustion fluid flows from the interior through the

Passages to the outside and / or in an outdoor area, preferably a combustion chamber. The distributor element can have any form and / or contour which appears expedient to a person skilled in the art, such as, for example, an at least partially spherical, conical, prismatic, ellipsoidal, annular, cylindrical and / or cuboidal shape and / or contour. Advantageously, the distributor element is designed as a distributor plate and is particularly preferably arched, in particular in the form of a cylinder jacket, preferably a circular cylinder jacket. A porosity of the distributor unit is in particular between 2% and 25%, preferably between 4% and 20% and particularly preferably between 7% and 15%. The term "porosity" of an object should be understood to mean, in particular, a ratio of a void volume to a total volume of the object. "A passage opening" should also be understood to mean, in particular, an opening through which the combustion fluid, in particular the combustion fluid, flows in at least one operating state Entry side on the exit side, flows. In particular, the passage openings can be viewed perpendicularly to the entrance Side and / or the outlet side have any, to a professional appear appropriate form and / or contour, such as a circular, rectangular, diamond-shaped, annular and / or oval shape and / or contour. Advantageously, the passage openings have a regular arrangement and / or a uniform shape and / or size at least in a partial region of the distributor unit, preferably in an entire region of the distributor unit. A diameter of a passage opening is in particular between 0.1 mm and 5 mm, advantageously between 0.3 mm and 3 mm and particularly preferably between 0.5 mm and 1.5 mm. In this context, a "diameter" of an object should be understood to mean, in particular, a diameter of a smallest imaginary circle which completely encloses the object, In particular, in the present case, the distributor unit can also have several, for example at least two, at least three and / or at least four However, the distributor unit particularly preferably has exactly one distributor element.

Furthermore, a "combustion optimization unit" should be understood to mean in particular one, in particular active and / or passive, unit which is intended to adapt a combustion to an advantageous operation and preferably to at least partially conduct and / or guide the combustion fluid. The combustion optimization unit may in particular be provided to reduce a temperature, in particular of the distributor unit, to improve a measuring accuracy, in particular a sensor unit, to stabilize the heating flame, to prevent recoil and / or lifting of the heating flame, to improve efficiency and In this context, an "active unit" should be understood to mean, in particular, a unit which is intended to be actively controlled. Furthermore, a "passive unit" is to be understood as meaning, in particular, a unit which is free of an activation possibility.

A "structural unit" is to be understood in particular as a unit, in particular a macroscopically and advantageously optically visibly structured unit, in particular a passive unit, which at least partially has a surface, in particular an outer surface, the burner device forms and is preferably adapted to a shape of the outlet side of the distributor unit and / or the distributor element. In particular, a minimum distance between the distributor unit and the structural unit in a mounted state is a maximum of 10 mm, advantageously not more than 5 mm, preferably not more than 2.5 mm and particularly preferably not more than 1 mm. Particularly preferably, the structural unit rests on at least a major part of the distributor unit and / or the distributor element. In addition, the distributor unit and the structural unit are advantageously at least partially formed integrally with one another. In particular, a shape and / or contour of the further passage openings of the structural unit may deviate from a shape and / or contour of the passage openings of the distributor unit. Advantageously, the structural unit consists at least partially, preferably at least to a large extent and particularly preferably completely, of a porous material, such as a sintered material, a grid, a woven fabric, a knitted fabric and / or a perforated plate. At least 60%, advantageously at least 70%, preferably at least 80% and particularly preferably at least 90% are to be understood as meaning "at least a large part." The term "two objects" is intended to be at least partially integral Connection be understood in particular that at least one component of the object, at least a portion of the object and / or the object is formed integrally with at least one component of the other object, at least a portion of the other object and / or the other object. In this context, "integral" is to be understood as being in particular at least materially bonded The fabric closure can be produced, for example, by an adhesive process, an injection process, a welding process, a soldering process, a riveting process and / or another process that appears appropriate to a person skilled in the art become.

Furthermore, the burner device can in particular at least one

Housing unit, which in particular the interior, preferably at least one combustion fluid supply space, defined, and / or comprise at least one sensor unit. In this context, a "sensor unit" is to be understood as meaning, in particular, a unit, in particular a detection and / or measuring unit, which is provided in particular for this purpose, in particular in FIG at least one operating state, at least one sensor signal, in particular a characteristic correlated with the combustion, such as a temperature, a pollutant emission, a heat radiation and / or an ionisationsignal to detect. The sensor unit may in particular be designed as any, in particular electric, optical and / or chemical, detection and / or measuring unit, such as a temperature sensor, thermoelectric sensor, lambda probe, gas sensor, in particular carbon monoxide sensor and / or Carbon dioxide sensor, radiation sensor, in particular infrared radiation sensor and / or

Ultraviolet radiation sensor, and / or preferably as lonisationssensor, in particular ionization electrode and advantageously flame ionization electrode. Preferably, the sensor unit is arranged in the interior and advantageously in a vicinity of the distributor unit. In this context, a "near zone" should be understood to mean, in particular, a spatial area which is formed by points which each have a distance of at most 5 cm, advantageously at most 3 cm, preferably at most 1 cm and particularly preferably at most 0.5 cm from a reference point and / or a reference component.

By means of a corresponding design of the burner device, optimized combustion with a stable heating flame, a minimum pollutant emission and / or a maximum efficiency can be achieved in particular. Furthermore, a temperature of the distributor unit can advantageously be kept low, whereby in particular costs, in particular of the distributor unit, can be reduced since commercially available materials can be used and, at the same time, the burner apparatus can be operated over a wide heating power range. Further, a recoil and / or lifting of the heating flame can be prevented, which in particular increases reliability and a possible hum can be reduced. Furthermore, a measuring accuracy of a sensor unit can be advantageously improved, in particular aging phenomena of the burner device can be minimized, so that a constant sensor signal can be achieved even after a long period of operation. In one embodiment of the invention, it is proposed that a number of further passage openings of the structural unit corresponds at least essentially to a number of passage openings of the distributor unit. Particularly preferably, the further passage openings and the passage openings, in particular parallel to a mean flow direction of the distributor unit, arranged one above the other and advantageously have a common, in particular geometric, center. Alternatively, however, it is also conceivable that a number of further passage openings of the structural unit is substantially larger than a number of passage openings of the distributor unit. In that a number of further passage openings "at least substantially" corresponds to a number of passage openings, it should be understood in particular that the number of further passage openings to a maximum of 20%, preferably by a maximum of 10% and more preferably by a maximum of 5% The term "substantially greater" should be understood to mean, in particular, at least 20%, advantageously at least 25%, preferably at least 30%, and particularly preferably at least 40% greater. In this context, a "middle through-flow direction" should be understood as meaning, in particular, a direction, in particular a flow direction of the combustion fluid, in particular through the passage openings and / or further passage openings, which in particular at least substantially perpendicular to the inlet side and / or the outlet side of the distributor unit and In this context, the expression "at least substantially perpendicular" shall in particular define an orientation of a direction relative to a reference direction, the direction and the reference direction, in particular in FIG Viewed from a plane, an angle in particular between 82 ° and 98 °, advantageously between 85 ° and 95 °, and more preferably between 88 ° and 92 °. In this way, in particular a temperature of the distributor unit can be reduced and a recoil and / or a lifting of the heating flame can be prevented.

Preferably, the structural unit has at least two partial regions, which consist of different materials. Under a "subarea" should thereby in particular a spatial area, advantageously a surface area, in particular the structural unit, to be understood which at least 2%, preferably at least 5% and particularly preferably at least 10% and in particular at most 40%, preferably at most 30% and particularly preferably at most 25% of an entire area , in particular surface, and / or a total volume of the structural unit corresponds. As a result, in particular costs can be reduced, in particular a cost-effective material and at critical points a high-quality material can be used at non-critical points.

The structural unit may at least partially, preferably at least a large part and particularly preferably completely, consist of any material that appears expedient to a person skilled in the art, such as a ceramic, a metal, in particular steel, advantageously stainless steel, and / or particularly preferably an alloy, in particular, an iron-chromium-aluminum alloy, such as Kanthai, and / or a nickel-chromium alloy, such as Inconel and / or Haynes. However, the structural unit advantageously has at least one partial region which has a chromium-nickel alloy and preferably consists of a chromium-nickel alloy. In particular, the structural unit can also have a plurality of partial regions which have a chromium-nickel alloy and / or consist of a chromium-nickel alloy. Preferably, the structural unit in its entirety on a chromium-nickel alloy and is particularly preferably in its entirety of such. In this way, in particular, a particularly stable structural design can be achieved, wherein in particular aging phenomena can be minimized at least locally. In addition, at least the subarea can be produced precisely, in particular possible batch fluctuations during manufacture can be reduced.

Alternatively and / or additionally, it is proposed that the structural unit has at least one partial area which has a coating. The coating may consist in particular at least partially, preferably at least to a large extent and particularly preferably completely, of titanium nitride (TiN) and / or aluminum nitride (Al ₂ N ₃ ). Advantageously, the structural unit while a base element, in particular a structural element, on which the coating is applied in particular directly. In particular, the structural unit can also have a plurality of partial regions which have a coating. In this case, the coating in the subregions may be different in particular and in particular used in one

Different material. The structural unit preferably has a coating in its entirety. In particular, this can further reduce costs. In addition, a burner device, in particular different subregions of the structural unit, can advantageously be adapted to different requirements.

The structural unit can consist at least partially, preferably at least to a large extent and particularly preferably completely, of a multifilament. However, the structural unit advantageously has at least one partial area, advantageously a sensing area, which consists of a monofilament. In this context, a "monofilament", in particular a monofilament and / or monofilament object, is advantageously understood to mean woven fabric and / or knitted fabric In particular, the structural unit may also comprise a plurality of subregions which consist of a monofilament The structural unit may also consist in its entirety of a monofilament, which may in particular increase a stability of the subarea and / or simplify manufacture.

In one embodiment of the invention, it is proposed that the structural unit has at least a first partial area with at least one first preferred direction and at least one second partial area with at least one second preferred direction, which with the first preferred direction an angle, in particular an acute angle, between 0 ° and 90 °, preferably between 0 ° and 60 °, and more preferably between 0 ° and 45 °. In particular, the first partial region is arranged relative to the second partial region, in particular in at least one operating state, in such a way that the first preferred direction with the second preferred direction forms an angle, in particular a spit zen angle, between 0 ° and 90 °, preferably between 0 ° and 60 ° and more preferably between 0 ° and 45 °. In this context, a "preferred direction" of an object should be understood as meaning, in particular, a direction of a macroscopically and preferably optically visible structure of the object, such as a longitudinal extension direction of the object, a profile of a minimum and / or maximum material thickness of the object, an arrangement of Recesses, especially the other

Passage openings, and / or a structure course, in particular an arrangement of certain elevations and / or depressions, of the object. Advantageously, at least one of the subregions can correspond to a subregion of the structural unit which has a chromium-nickel alloy and / or a coating and / or which consists of a monofilament. In this way, in particular, a stability of the heating flame and / or an efficiency can be improved. In addition, advantageously a possible moire effect can be compensated.

If at least one of the partial regions corresponds to a sensing region, in particular an advantageous detection and / or measurement, in particular by means of the sensor unit, can take place. In particular, the structural unit has the at least one, preferably exactly one, sensing region and at least one surrounding region. A "sensing region" should be understood to mean, in particular, a region, in particular a partial region of the structural unit, which is arranged in a vicinity of the sensor unit The sensing region is advantageously in an edge region, in particular in a near region of an edge of the structural unit and / or in a near region of at least a portion of the housing unit, attached. assigns.

Furthermore, it is proposed that the structural unit has at least one partial area with a preferred direction which forms an angle, in particular with a longitudinal extension direction of the distributor unit and / or the housing unit, in particular an acute angle, between 0 ° and 90 °, preferably between 0 ° and 60 °, and more preferably between 0 ° and 45 °, includes. In this context, a "longitudinal direction of extension" of an object is to be understood as meaning, in particular, at least one longest edge and / or side of a smallest cuboid, which is just enclosing the object, in particular imaginary

Object also a plurality of longitudinal extension directions, in particular at least two and / or three longitudinal extension directions, have, in particular in the case that the smallest object just enclosing cuboid has a square side surface and / or is formed as a cube. Preferably, the structural unit in its entirety can have exactly one preferred direction. As a result, in particular manufacturing-related variations, in particular in an edge region of the burner device, can be compensated, whereby in particular a flame stability can be effectively increased. In addition, advantageously a possible moire effect can be compensated.

It is also proposed that the burner device comprises at least one pre-assembly unit, which is intended to define an angular position of at least one subregion of the structural unit and / or the entire structural unit, in particular during assembly of the structural unit, relative to the distributor unit. In this context, a "pre-assembly unit" should be understood to mean, in particular, a unit which has in particular at least one positioning element and which is intended to mount a mounting position and / or a mounting orientation of the partial area of the structural unit and / or the entire structural unit during assembly of the structural unit The positioning element may be designed in particular as any positioning element that appears expedient to a person skilled in the art, such as a stop, depression, recess, bearing pin and / or latching element In this case, the pre-assembly unit may advantageously be at least partially integral and / or advantageously integral with the housing unit and / or at least one, in particular to the positioning element advantageously be connected to the distribution unit. Under "one-piece" should understood in this context in particular in one piece. Preferably, this is made one piece from a single blank. In the present case, the angular position advantageously corresponds to an angular position between a preferred direction of the subregion of the structural unit and / or the entire structural unit and a reference direction, in particular one

Preferred direction of a further subarea of the structural unit,

a longitudinal extension of the distributor unit and / or a longitudinal extent of the housing unit. As a result, in particular a time efficiency, in particular during assembly, can be improved.

If the combustion optimization unit has at least one actuator unit which is provided to rotate the structural unit and / or the distributor unit at least in a partial area relative to one another in at least one operating state, the burner apparatus can also be adapted to an advantageous operation during operation.

In one embodiment of the invention it is proposed that the structural unit has at least substantially frustoconical and in particular continuously curved flow-through elements, each with at least one, preferably exactly one, the further passage openings, wherein the other

Passage openings relative to the passage openings, in particular viewed perpendicular to a mean flow direction, are arranged elevated. In particular, a smallest, the Durchströmelemente just surrounding, in particular convex, envelope corresponds to a truncated cone coat. Under an "at least substantially frusto-conical" object in this

Context in particular an object to be understood, which deviates from a frustoconical object by at most 5%, advantageously by at most 3% and more preferably by at most 1%. Advantageously, the flow-through elements are at least partially formed in one piece and / or advantageously in one piece with the structural unit and advantageously from a single

Stamping. In particular, the flow-through elements are at least partially and preferably at least a large part arranged on an outlet side of the distributor unit and in particular at least partially form a surface, in particular an outer surface, of the burner device. In addition, one corresponds to in particular dimensionless, ratio between a diameter of the further passage openings to a height offset of the other

Passage openings, in particular with respect to the passage openings, in particular between 0.2 and 5.0, advantageously between 0.3 and 3.0 and particularly preferably between 0.4 and 2.0. Advantageously, the passage openings and / or the further passage openings are uncovered. The term "uncovered" should in particular be understood to mean that the passage openings and / or the further passage openings are free of one, in particular at least partially, above the passage openings and / or the other

Through openings, in particular in a region of the outlet side of the distributor unit, arranged, cover and / or one, in particular at least partially above the passage openings and / or the other

Passage openings, in particular in a region of the outlet side of the distributor unit, arranged, combustion fluid guide are considered, in particular perpendicular to a mean flow direction of the distributor unit.

In this way, in particular, a temperature of the combustion optimization unit can be reduced and, at the same time, advantageously a stable heating flame can be achieved. In one embodiment of the invention, it is proposed that a number of further passage openings, in particular the further passage openings, and / or the flow-through elements is substantially smaller than a number of passage openings of the distributor unit. The expression "substantially lower" should be understood to mean, in particular, at least 10%, advantageously at least 20%, preferably at least 40%, and particularly preferably at least 60% less.

A particularly stable heating flame can be achieved, in particular, if the passage openings and the further passage openings are arranged in rows, the passage openings and the further passage openings being arranged alternately in at least one row. It is also proposed that the distributor unit and the combustion optimization unit and / or the structural unit are manufactured and / or formed in one piece from a stamped part. In particular, this can reduce costs, improve stability and simplify a manufacturing process.

In addition, the invention is based on a method for optimizing a burner device, in particular a gas burner device, with at least one distributor unit having a plurality of passage openings for a combustion fluid, and with at least one combustion optimization unit which is provided to optimize combustion, and which at least one arranged on an outlet side of the distributor unit structural unit having a plurality of further passage openings, wherein the structural unit, in particular in at least one mounting state, in at least one development state, such as during preliminary tests, in particular for determining a suitable angular position, and / or is rotated in at least one operating state, at least in a partial area to optimize the combustion. In this way, in particular optimized combustion with a stable heating flame, a minimum emission of pollutants and / or a maximum efficiency can be achieved. In addition, in particular manufacturing-related variations, in particular in an edge region of the burner device, be compensated, whereby in particular a flame stability can be effectively increased.

The burner device should not be limited to the application and embodiment described above. In particular, in order to fulfill a mode of operation described herein, the burner apparatus may have a number different from a number of individual elements, components and units mentioned herein.

drawing

Further advantages emerge from the following description of the drawing. In the drawing, six embodiments of the invention are shown. The drawing tion, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations.

Show it:

1 is a trained as a gas burner burner with a burner device in a plan view

2 shows a distributor unit and a combustion optimization unit of the burner device in a schematic sectional view along the line II-II in FIG. 1,

3 shows the distributor unit and the combustion optimization unit in a sectional view along the line III-III in FIG. 1, FIG.

4 is a detailed view of a portion of a structural unit of

Combustion optimization unit,

5 shows a distributor unit and a combustion optimization unit of a further burner device in a sectional view analogous to FIG. 4,

Fig. 6 is designed as a gas burner burner with another

Burner device in a plan view,

7 shows a detailed view of a partial region of a structural unit of a further burner device,

8 shows a detailed view of a partial region of a structural unit of a further burner device,

Fig. 9 is designed as a gas burner burner with another

Burner device in a plan view,

FIG. 10 shows a distributor unit and a combustion optimization unit of the burner device from FIG. 9 in a sectional view along the line X-X in FIG. 9 with respect to the distance A-B-C,

11 shows a distributor unit and a combustion optimization unit of a further burner device in a perspective view,

FIG. 12 shows the distributor unit and the combustion optimization unit from FIG. 11 in a detailed view, and FIG 13 shows the distributor unit and the combustion optimization unit from FIG. 12 in a sectional view along the line XIII-XIII.

Description of the embodiments

Figures 1 and 2 show an exemplary burner 26a in the form of a gas burner in a plan view (see Figure 1) and in a side sectional view along a line II-II in Figure 1 (see Figure 2). The burner 26a has a burner device. The burner device is intended to burn a combustion fluid and thereby to generate a heating flame. In the present case, the burner device is intended to burn a fuel gas-air mixture. A heating power of the burner device is between 0.3 kW and 18 kW.

The burner device comprises a housing unit 28a. The housing unit 28a in the present case is made of stainless steel. The housing unit 28a is rectangular when viewed in a plan view. The housing unit 28a has two transverse side walls (not shown) and two longitudinal side walls 30a, 32a. In addition, the housing unit 28a comprises a fastening frame element

34a. The mounting frame member 34a is integrally connected to the lateral side walls and the longitudinal side walls 30a, 32a. The mounting frame member 34a defines a housing opening. The housing opening is formed at least substantially rectangular in plan view. In addition, the housing unit 28a has an inner space 36a. The inner space 36a corresponds to a combustion fluid supply space. Alternatively, one could

Housing unit, however, also have any other shape and / or consist of any other material that appears appropriate to a person skilled in the art.

Furthermore, the burner device has a distributor unit 10a (cf., in particular, FIG. The distributor unit 10a is formed in one piece in the present case. The distributor unit 10a is made of stainless steel. The distribution unit 10a is attached to the attachment frame member 34a. The distributor unit 10a furthermore has an inlet side 15a facing the interior 36a and an outlet side 16a facing away from the interior 36a, in particular for the combustion fluid. The distributor unit 10a is provided to distribute the combustion fluid uniformly over a combustion zone of the burner device. The distributor unit 10a has for this purpose exactly one distributor element 38a. The distributor element 38a is rectangular when viewed in plan view. The distributor element 38a is designed as a distributor plate. The distributor element 38a is arched. In the present case, the distributor element 38a has a curvature in the transverse direction (cf., in particular, FIG. In addition, the distributor element 38a has a multiplicity of passage openings 12a (compare in particular FIG. 4). The passage openings 12a are identical to one another. The passage openings 12a have a regular arrangement. The

Passage openings 12a are circular when viewed in plan view. Furthermore, the passage openings 12a have a diameter of about 1 mm. A porosity of the distributor unit 10a and / or the distributor element

38a corresponds to about 10% in the present case. Alternatively, it is conceivable that a distributor unit and / or a distributor element has any other shape and / or consists of any other material that appears meaningful to a person skilled in the art. In addition, an arrangement of the

Passage openings, at least in a partial area, in particular a

Sensing, be irregular and / or vary over a surface of the distributor unit and / or the distributor element. In addition, it is conceivable that at least one passage opening, in particular in a comparison to the other

Through openings, in particular in a plan view, a shape deviating from a circular shape, such as rectangular and / or oval.

The burner device furthermore has a sensor unit 40a (cf., in particular, FIG. 3). The sensor unit 40a is disposed in the inner space 36a. The sensor unit 40a is arranged in a vicinity of the distributor unit 10a, in particular of the distributor element 38a. In the present case, the

Sensor unit 40a attached to the inlet side 15a of the distribution unit 10a. The sensor unit 40a is disposed in an edge area of the distribution unit 10a. The sensor unit 40a is arranged in the present case in a vicinity of the mounting frame member 34a. The sensor unit 40a is designed as a flame ionization electrode formed. The sensor unit 40a is provided to detect a characteristic correlated with the combustion. In the present case, the sensor unit 40a is provided to detect an ionisation signal. The sensor unit 40a makes use of the fact that flames conduct electricity when an electrical voltage is applied. Alternatively, it is conceivable to use any other sensor unit which appears expedient to a person skilled in the art, and / or to arrange the sensor unit in a different partial area of the distributor unit, for example centrally. In addition, the burner device comprises a combustion optimization unit

14a. The combustion optimization unit 14a is provided to optimize combustion. For this purpose, the combustion optimization unit 14a has a structural unit 18a. The structural unit 18a has an optically visible structure. The structural unit 18a is arranged on the outlet side 16a of the distributor unit 10a. The structural unit 18a is adapted to a shape of a surface of the exit side 16a. Accordingly, the structural unit 18a is arched. In the present case, the structural unit 18a has a curvature in the transverse direction (cf., in particular, FIG. 2). The structural unit 18a rests on the distribution unit 10a at least substantially over the entire area. In the present case, the structural unit 18a is connected to the housing unit 28a, at least by means of the fastening frame element 34a, in particular via a clamping connection. Alternatively, a structural unit could also have a distance to the distributor unit of at least 0.5 mm and not more than 1 cm. The structural unit 18a further forms at least partially an outer surface of the burner device. The structural unit 18a forms about 40% of the outer surface of the burner device. The structural unit 18a is designed in the present case as a burner deck. Furthermore, the structural unit 18a is made of a porous material. In this case, the structural unit 18a has a multiplicity of further passage openings 20a. A number of others

Through openings 20a corresponds in the present case at least substantially to a number of passage openings 12a of the distributor unit 10a. The further passage openings 20a are in plan view above the

Passage openings 12a of the distributor element 38a arranged. The structural unit 18a further comprises at least two structural elements 42a, 44a. In the present case, the structural unit 18a has exactly two structural elements 42a, 44a. The structural elements 42a, 44a are formed separately. The structural elements 42a, 44a have a different optically visible structure in the present case. A first structural element 42a forms a first one

Part of the structural unit 18a. The first subregion of the structural unit 18a corresponds to a surrounding area. In addition, a second structural element 44a forms a second partial region of the structural unit 18a. The second subregion of the structural unit 18a corresponds to a sensing region.

The first structural element 42a consists of a knitted fabric. The first structural element 42a is made of stainless steel. The first structural element 42a has a first optically visible structure. The first structural element 42a has alternately arranged elevations and depressions, relative to a material thickness averaged over the first structural element 42a. The first structural element 42a has an average material thickness of about 1.5 mm over the first structural element 42a. In addition, the first structural element 42a is at least substantially rectangular in plan view. The first structural element 42a has an at least substantially rectangular recess 46a in the plan view. The recess 46a is disposed above the sensor unit 40a. The recess 46a has a size at least substantially corresponding to the sensor unit 40a. The first structural element 42a has an area of approximately 85% of an entire area of the structural unit 18a. The first structural element 42a is further coated. The coating consists in the present case of titanium nitride. As a result, the structural unit 18a has a partial area which has a coating. Alternatively, however, it is also possible to dispense with a coating. In addition, the first structural element 42a has a first preferred direction. The first preferred direction corresponds to an optically visible preferred direction. In the present case, the first preferred direction corresponds to a profile of the elevations and depressions of the first structural element 42a. The first preferred direction is arranged in a mounted state parallel to a longitudinal direction of the housing unit 28a. Furthermore, the first structural element 42a has a first number of the further passage openings 20a. The first number of others Passage openings 20a is at least substantially rectangular in plan view.

In the present case, the second structural element 44a consists of a mesh (cf., in particular, FIG. 4). The second structural element 44a consists of a

Monofilament. The second structural element 44a consists of a chromium-nickel alloy. As a result, the structural unit 18a has a partial area which comprises a chromium-nickel alloy. In addition, in the present case, the structural unit 18a has two partial areas, which consist of different materials. The second structural element 44a has a second optically visible structure. The second structural element 44a has a material thickness of about 0.1 mm and 1.5 mm. The second structural element 44a has in the present case a material thickness of about 0.8 mm. Furthermore, the second structural element 44a is at least substantially rectangular in plan view. The second structural element 44a is arranged above the sensor unit 40a. The second structural element 44a has an area of approximately 15% of an entire surface of the structural unit 18a. The second structural element 44a has a second number of the further passage openings 20a. The second number of further passage openings 20a is square in plan view. In addition, the second structural element 44a has a second preferred direction. The second preferred direction corresponds to an optically visible preferred direction. In the present case, the second preferred direction corresponds to a course of the second number of further passage openings 20a of the second structural element 44a. The second structural element 44a is further arranged offset relative to the first structural element 42a parallel to a mean flow direction of the distribution unit 10a. The second structural element 44a is arranged elevated relative to the first structural element 42a parallel to the central throughflow direction of the distributor unit 10a (see in particular FIG. 3).

Alternatively, it is conceivable to provide a second structural element with a coating and / or to manufacture a first structural element from a monofilament. It is also conceivable at least a second structural element in a plan view circular, oval, square and / or rhombic form. In addition, the burner device has a pre-assembly unit 22a. The pre-assembly unit 22a is provided to define an angular position of the second structural element 44a relative to the distributor unit 22a. In the present case, the pre-assembly unit 22a is intended to define an angular position of at least one subregion of the structural unit 18a relative to the distributor unit 10a. The pre-assembly unit 22a is formed integrally with the distributor unit 10a, in particular the distributor element 38a. The pre-assembly 22a is formed in the present case as a bearing pin. Furthermore, the second partial area is relative to the first partial area, in particular by means of the pre-assembly unit

22a, arranged such that the first preferred direction with the second preferred direction forms an angle of about 45 °. In the present case, the second structural element 44a is arranged in an assembled state such that the second preferred direction encloses an angle of approximately 45 ° with the longitudinal extension direction of the housing unit 28a. This can be a stability of

Heizflamme be optimized. In addition, advantageously a possible moiré effect can be compensated.

In addition, the first structural element 42a is formed at least partially in one piece with the distributor unit 10a, in particular the distributor element 38a. In the present case, at least one edge region of the recess 46a of the first structural element 42a is connected to the distributor unit 10a by means of spot welding. The second structural element 44a is formed at least partially in one piece with the distributor unit 10a, in particular the distributor element 38a. In the present case, at least one edge region of the second structural element

44a connected by spot welding to the distributor unit 10a. In addition, the second structural element 44a is formed at least partially in one piece with the first structural element 42a. In this case, at least the edge region of the second structural element 44a is connected by spot welding to the edge region of the recess 46a of the first structural element 42a. The first structural element 42a, the second structural element 44a and the distributor unit 10a are simultaneously welded together. Alternatively, however, other attachment methods are conceivable, such as gluing and / or soldering. To- it is conceivable to attach only a first or a second structural element to the distributor unit.

FIGS. 5 to 12 show further exemplary embodiments of the invention. The following descriptions and the drawings are limited to

Substantially to the differences between the embodiments, with respect to the same designated components, in particular with respect to components with the same reference numerals, in principle, the drawings and / or the description of the other embodiments, in particular the figures 1 to 4, referenced. For distinguishing the embodiments is the

Letter a the reference numerals of the embodiment in the figures 1 to 4 adjusted. In the exemplary embodiments of FIGS. 5 to 12, the letter a is replaced by the letters b to g. FIG. 5 shows a further exemplary embodiment of the invention. the

Embodiment of Figure 5 is the letter b readjusted. The further embodiment of Figure 5 differs from the previous embodiment, at least substantially by an arrangement of a second structural element 44b of a structural unit 18b.

In the present case, the second structural element 44b is arranged parallel to a mean flow direction between a first structural element 42b and a distributor unit 10b, in particular a distributor element 38b. In addition, a pre-assembly unit 22b is designed as a stop.

FIG. 6 shows a further exemplary embodiment of the invention. The embodiment of Figure 6, the letter c is adjusted. The further exemplary embodiment of FIG. 6 differs from the previous exemplary embodiments at least substantially by a second structural element 44c of a structural unit 18c.

In the present case, the second structural element 44c is circular in plan view. In addition, a combustion optimization unit 14c has an actuator unit 48c. The actuator unit 48c is intended to provide the second structure. During an operation, and thus in particular the structural unit 18c, at least in a subarea, the turelement 44c can be rotated relative to a distributor unit 10c, whereby in particular an efficiency and / or an efficiency during operation can be optimized. Alternatively, it is also conceivable that an actuator unit is provided to rotate a distributor unit and / or at least a portion of a distributor unit.

FIG. 7 shows a further exemplary embodiment of the invention. The embodiment of Figure 7 is followed by the letter d. The further exemplary embodiment of FIG. 7 differs from the previous exemplary embodiments at least substantially by a second structural element 44d of a structural unit 18d.

The second structural element 44d consists in the present case of a perforated plate. A second number of further passage openings 20d is circular in a plan view.

FIG. 8 shows a further exemplary embodiment of the invention. The embodiment of Figure 8 is followed by the letter e. The further exemplary embodiment of FIG. 8 differs from the previous exemplary embodiments at least substantially by a second structural element 44e of a structural unit 18e.

The second structural element 44e consists in the present case of an expanded metal. The second structural element 44e is designed as an expanded mesh. A second number of further passage openings 20e is rhombic in plan view.

FIGS. 9 and 10 show a further embodiment of the invention. The embodiment of Figures 9 and 10, the letter f is adjusted. The further exemplary embodiment of FIGS. 9 and 10 differs from the previous exemplary embodiments at least substantially by a structural unit 18f. The structural unit 18f has exactly one structural element 42f. The structural element 42f corresponds at least substantially to a first structural element 42a to 42e of the previous exemplary embodiments. The structural element 42f consists of a knitted fabric. The structural element 42f is free of a recess in the present case. A preferred direction of the structural element 42f corresponds to a course of elevations and depressions of the structural element 42f. In the present case, the structural element 42f is arranged in an assembled state such that the preferred direction encloses an angle of approximately 45 ° with a longitudinal extension direction of a housing unit 28f. As a result, uniform alignment of the structural unit 18f, in particular an optically visible structure of the structural unit 18f, can be achieved in a vicinity of the housing unit 28f, in particular a mounting frame element 34f, and / or in an edge area of a burner device. This uniform alignment of the structural unit 18f is illustrated in particular in FIG. 10, which shows a section along the points A, B, C in FIG. In addition, the structural unit 18f has a partial area which has a coating. The subregion corresponds to a sensing region.

Alternatively, however, the coating can also be dispensed with. Furthermore, it is conceivable that a housing unit, a combustion optimization unit and / or a structural unit has a different shape, such as oval and / or cylindrical. In addition, it is conceivable that the combustion optimization unit has at least one actuator unit which is provided to rotate the structural unit and / or the distributor unit relative to one another in at least one operating state, at least in a partial area.

FIGS. 11 to 13 show a further embodiment of the invention. The embodiment of Figures 11 to 13, the letter g is adjusted. The further exemplary embodiment of FIGS. 11 to 13 differs from the previous exemplary embodiments at least substantially by a structural unit 18g of a combustion optimization unit 14g.

A distributor unit 10g has in the present case a plurality of

Passage openings 12g. The passage openings 12g are identical to each other table. The passage openings 12g have a regular arrangement. The passage openings 12g are circular in plan view. Furthermore, the passage openings 12g have a diameter of about 0.8 mm.

Furthermore, the structural unit 18g has a plurality of flow-through elements 24g (cf., FIG. 12). The Durchströmelemente 24g are frusto-conical. The Durchströmelemente 24g have a convex envelope in the form of a truncated cone. The Durchströmelemente 24g are formed continuously curved. Each flow element 24g has exactly one more

Passage opening 20g. Alternatively, it is also conceivable that at least one flow-through element has at least two further passage openings.

The further passage openings 20g are identical to each other. The further passage openings 20g are in the present case to the passage openings

12g identical. The further passage openings 20g have a regular arrangement. The further passage openings 20g are circular when viewed in plan view. Furthermore, the further passage openings 20g have a diameter of about 0.8 mm. The further passage openings 20g are perpendicular to a middle one relative to the passage openings 12g

Viewed in the direction of flow increased. Alternatively, it is conceivable to form passages and other passages differently, for example with a different shape and / or a different diameter.

The passage openings 12g and the further passage openings 20g are arranged in the present case in several rows. In at least one row only passage openings 12 g are arranged. In addition, passage openings 12g and further passage openings 20g are arranged alternately in at least one further row (cf., FIG. 13). In the present case, rows in which in particular only passage openings 12g are arranged alternate with further rows, in which passage openings 12g and others

Passages 20g are alternately arranged, from. A number of further passage openings 20g is substantially smaller than a number of passage openings 12g. Each of the others

Passage openings 20g are surrounded directly by a plurality of passage openings 12g. The passage openings 12g, which is one of the other

Passage opening 20 g immediately surrounding, are at least substantially circularly arranged around the respective further passage opening 20 g. In the present case, each further passage opening 20 g is surrounded directly by six passage openings 12 g. In particular, there are two more

Passage openings 20g not arranged directly next to each other.

In addition, the passage openings 12g and the other

Passages 20g uncovered. The passage openings 12g and the further passage openings 20g are free of one, in particular arranged above, cover.

The structural unit 18 g is further formed integrally with the distributor unit 10 g. In the present case, the combustion optimization unit 14g is formed integrally with the distributor unit 10g. As a result, the combustion optimizing unit 14g and the distribution unit 10g are formed to be identical with each other. As a result, the combustion-optimizing unit 14g and the distribution unit 10g constitute the same component. In the present case, the combustion optimization unit 14g and the distributor unit 10g are formed from a single stamped part. A porosity of the combustion optimizing unit 14g and / or the distributor unit 10g is about 8%. Alternatively, however, it is also conceivable to design a combustion optimization unit and a distributor unit in two parts.

Claims

claims

A burner device, in particular a gas burner device, with at least one distributor unit (10a-10g), which has a plurality of

Having passage openings (12a - 12g) for a combustion fluid, and with at least one combustion optimization unit (14a - 14g), which is intended to optimize combustion, and which at least one at an outlet side (16a - 16g) of the distribution unit (10a - 10g ) arranged structural unit (18a - 18f) with a variety of others

Passage openings (20a - 20f).

2. Burner device according to claim 1, characterized in that the

Structural unit (18a - 18f) has at least two partial areas, which consist of different materials.

3. Burner device according to claim 1 or 2, characterized in that the structural unit (18a - 18f) has at least a partial region which comprises a chromium-nickel alloy.

4. Burner device according to one of the preceding claims, characterized in that the structural unit (18a - 18f) has at least one partial area, which has a coating.

5. Burner device according to one of the preceding claims, characterized in that the structural unit (18a - 18e) has at least a first subarea with at least one first preferred direction and at least one second subarea with at least one second preferred direction, with the first preferred direction an angle between 0 ° and 90 °.

6. Burner device according to at least one of claims 2 to 5, characterized in that at least one of the subregions a

Sensing range corresponds.

7. Burner device according to one of the preceding claims, characterized in that the structural unit (18a - 18f) has at least one partial area with a preferred direction, which encloses an angle between 0 ° and 90 ° with a longitudinal extension direction of the distributor unit (10a - lOf) ,

8. Burner device according to one of the preceding claims, characterized by at least one pre-assembly unit (22a, 22b, 22d, 22e, 22f), which is provided, an angular position of at least a portion of the structural unit (22a, 22b, 22d, 22e, 22f) relative to the distribution unit (22a, 22b, 22d, 22e, 22f).

9. burner device according to one of the preceding claims, characterized in that the combustion optimization unit (14a - 14f) at least one actuator unit (48a - 48f), which is provided, in at least one operating state, the structural unit (18a - 18f) and / or the Distributor unit (10a - lOf) rotate at least in a partial area relative to each other.

10. burner device according to one of the preceding claims, characterized in that the structural unit (18g) at least substantially frusto-conical Durchströmelemente (24g), each having at least one of the further passage openings (20g), wherein the other

Passage openings (20g) are arranged elevated relative to the passage openings (12g).

11. Burner device according to one of the preceding claims, characterized in that a number of further passage openings (20g) is substantially smaller than a number of passage openings (12g).

12. Burner device according to one of the preceding claims, characterized in that the passage openings (12g) and the further passage openings (20g) are arranged in rows, wherein the

Passage openings (12g) and the further passage openings (20g) are arranged alternately in at least one row.

13. Burner device according to one of the preceding claims, characterized in that the distributor unit (10g) and the combustion optimizing unit (14g) are made in one piece from a stamped part.

14. Burner, in particular gas burner, with at least one burner device according to one of the preceding claims.

15. A method for optimizing a burner device, in particular Gasbren- nerve device, in particular according to one of claims 1 to 13, with at least one distributor unit (10a - 10g), which a plurality of

Having passage openings (12a - 12g) for a combustion fluid, and with at least one combustion optimization unit (14a - 14g), which is intended to optimize combustion, and which at least one at an outlet side (16 a - 16g) of the distribution unit (10a -. 10g) arranged structural unit (18a - 18g) with a variety of others

Through openings (20a - 20g), wherein the structural unit (18a - 18g) is rotated to optimize combustion at least in a partial area.