Burner device, heat generator, heating system and service water supply system and method for vibration adaptation of a burner device

Abstract

The invention provides a burner device 100 for providing thermal energy by combustion of an air-fuel mixture G, which burner device comprises a flame body 1 which delimits an interior space 11 which is connected via openings in the flame body 1 to an outer combustion surface 12 of the flame body 1 , on which the combustion of an air-fuel mixture G, which is introduced into the interior space 11 and flows through the openings, takes place in one or more burner flames, and a flow guiding device 2 which comprises an axial flow channel 21 , which is located mostly or completely in the interior space 11 , for guiding through the air-fuel mixture G, which runs in particular parallel to a longitudinal axis LA of the flame body 1 , the axial length of which is selected as a function of an oscillation frequency induced by the one or more burner flames.

1 - 15 . (canceled) 
     
     
         16 . A burner device for providing thermal energy by combustion of an air-fuel mixture, comprising:
 a flame body which delimits an interior space which is connected via openings in the flame body to an outer combustion surface of the flame body, on which a combustion of the air-fuel mixture, which is introduced into the interior space and flows through the openings, takes place in one or more burner flames, and   a flow guiding device which comprises an axial flow channel, which is located mostly or completely in the interior space, for guiding through the air-fuel mixture, which runs in parallel to a longitudinal axis of the flame body, the axial length of which is selected as a function of an oscillation frequency induced by the one or more burner flames.   
     
     
         17 . The burner device according to  claim 16 , wherein
 the axial length is selected as a function of an oscillation frequency of the burner device which occurs when the burner device is operated without a flow guiding device.   
     
     
         18 . The burner device according to  claim 17 , wherein
 the axial length is additionally selected as a function of the speed of sound of the air-fuel mixture.   
     
     
         19 . The burner device according to  claim 16 , wherein
 a ratio of a cross-sectional area of the axial flow channel in a cross section perpendicular to the longitudinal axis of the flame body to an inlet surface via which the air-fuel mixture is introduced into the interior space is greater than or equal to 15%.   
     
     
         20 . The burner device according to  claim 16 , wherein
 the axial flow channel is arranged centrally with respect to the flame body, so that, in the cross section perpendicular to the longitudinal axis of the flame body, it is spaced apart from a circumferential inner wall of the flame body adjoining the interior space.   
     
     
         21 . The burner device according to  claim 20 , characterized in that
 the flow guiding device comprises further flow channels for guiding through the air-fuel mixture, which run in parallel to a longitudinal axis of the flame body, which are arranged between the axial flow channel and the circumferential inner wall of the flame body with respect to the cross section perpendicular to the longitudinal axis of the flame body.   
     
     
         22 . The burner device at least according to  claim 21 , wherein
 the flow guiding device comprises at least three further flow channels which, with respect to the cross section perpendicular to the longitudinal axis of the flame body, completely surround an outer circumference of the axial flow channel.   
     
     
         23 . The burner device at least according to  claim 21 , wherein
 the flow guiding device is designed as a pipe insert which comprises a central pipe element which forms the axial flow channel, and a plurality of fin elements which are arranged directed outwardly on an outer circumference of the central pipe element, wherein in each case two of the plurality of fin elements delimit one of the further flow channels in a circumferential direction of the pipe insert.   
     
     
         24 . The burner device according to  claim 23 , characterized in that
 radial end portions of the fin elements terminate flush with a circumferential inner wall of the flame body, such that the further flow channels in the cross section perpendicular to the longitudinal axis of the flame body are formed in each case by a portion of the pipe element, portions of two of the plurality of fin elements and by a portion of the circumferential inner wall of the flame body.   
     
     
         25 . The burner device at least according to  claim 23 , wherein
 the burner device furthermore comprises a flame barrier arranged mostly or completely in the interior space, wherein the flow guiding device is arranged mostly or completely within the flame barrier, and   radial end portions of the fin elements terminate flush with a circumferential inner wall of the flame barrier, such that the further flow channels in the cross section perpendicular to the longitudinal axis of the flame body are formed in each case by a portion of the pipe element, portions of two of the plurality of fin elements and by a portion of a circumferential inner wall of the flame barrier.   
     
     
         26 . The burner device according to  claim 16 , wherein
 the burner device furthermore comprises a flame barrier arranged mostly or completely in the interior space, wherein the flow guiding device is arranged mostly or completely within the flame barrier.   
     
     
         27 . A method for vibration adaptation of a burner device which is configured for providing thermal energy by combustion of an air-fuel mixture, and which comprises a flame body delimiting an interior space which is connected via openings in the flame body to an outer combustion surface of the flame body, on which a combustion of an air-fuel mixture, which is introduced into the interior space and flows through the openings, takes place in one or more burner flames, the method comprising:
 operating the burner device with combusting the air-fuel mixture on the outer combustion surface of the flame body;   detecting an oscillation frequency of the burner device during operation, with a detection point in a combustion chamber of the burner device or in an environment of the burner device;   providing a flow guiding device which comprises an axial flow channel for guiding through the air-fuel mixture, which in turn comprises:
 determining an axial length of the axial flow channel as a function of the detected oscillation frequency; and 
 creating the flow guiding device, the axial flow channel of which has a length which corresponds to the determined axial length; and 
   inserting the provided flow guiding device into the interior space of the burner device.   
     
     
         28 . A heat generator for transferring thermal energy onto a fluid, for use in a heating system or in a service water supply system, the heat generator comprising:
 a burner device for providing thermal energy by combustion of an air-fuel mixture, including:
 a flame body which delimits an interior space which is connected via openings in the flame body to an outer combustion surface of the flame body, on which a combustion of the air-fuel mixture, which is introduced into the interior space and flows through the openings, takes place in one or more burner flames, and 
 a flow guiding device which comprises an axial flow channel, which is located mostly or completely in the interior space, for guiding through the air-fuel mixture, which runs in parallel to a longitudinal axis of the flame body, the axial length of which is selected as a function of an oscillation frequency induced by the one or more burner flames; and 
   a heat exchanger which is coupled to the burner device and via which thermal energy provided by the burner device can be transferred onto the fluid.   
     
     
         29 . The heat generator according to  claim 28 , which is incorporated in a heating system for heating a building, wherein
 the heating system includes a pipe system for transporting a fluid energy transport medium; and   the heat generator is for heating the energy transport medium to be transported through the pipe system.   
     
     
         30 . The heat generator according to  claim 28 , which is incorporated in a service water supply system for supplying service water, wherein
 the heating system includes a pipe system for transporting the service water; and   the heat generator is for heating the service water to be transported through the pipe system.