CN104613495A - Heating device with a burner assisted by a blower - Google Patents
Heating device with a burner assisted by a blower Download PDFInfo
- Publication number
- CN104613495A CN104613495A CN201410858105.0A CN201410858105A CN104613495A CN 104613495 A CN104613495 A CN 104613495A CN 201410858105 A CN201410858105 A CN 201410858105A CN 104613495 A CN104613495 A CN 104613495A
- Authority
- CN
- China
- Prior art keywords
- fuel
- opening
- heating appliances
- air
- aforementioned
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/34—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air
- F23D14/36—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air in which the compressor and burner form a single unit
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/62—Mixing devices; Mixing tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/007—Regulating fuel supply using mechanical means
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
The invention relates to a heating device (10) and a fuel-air mixing device (16) for the heating device. The heating device comprises a burner (14) assisted by a blower (12), a fuel-air mixing device (16). The fuel-air mixing device drives in particular gaseous fuel (22) to go through at least one opening (24)via pipes (26, 30) in a region of a narrow region (18) to feed a flowing air (20). It is proposed that the opening (24) represents the main throttling of the fuel between the pipes (26, 30) and the air (20).
Description
Technical field
The present invention relates to a kind of heating appliances with the burner supported by air blast, wherein, the fuel of preferred gaseous state is fed in the air of flowing by least one opening in fuel-air mixing arrangement in the region of narrow portion position.
Background technology
DE 102010044591 A1 illustrates and describes a kind of fuel-air mixing arrangement in Wen's form of implementation, and wherein, air is pressed in Wen's entrance by air blast, with after Wen's narrow portion position shortly with gas and vapor permeation.Gas is fed and is undertaken by gas conditioner and short infeed pipeline, and in gas conditioner and short infeed pipeline, gas flowing was both affected and throttling in pressure and in its flowing.There is the heating appliances arranged so too limited for expectation now in the possibility that it changes power.
Summary of the invention
That have independent claims feature, that heating appliances according to the present invention has advantage is: opening represents fuel at pipeline with to the main throttling between being mixed into of air, and thus, power adjustment can be increased significantly.Then, on the described opening between the air-supplied and fuel inlet flowed over, the main pressure carried out for fuel declines.Confirm, a kind of flowing of realization is imported by this fuel by this measure on narrow portion position, can very accurately metering fuel air mixture by this flowing, because carry out the importing of fuel with high speed, this makes the flowing in Wen stablize and the low pressure proportionate relationship of Optimum utilization in the narrow area of Wen.Therefrom draw, even if when adjusting blower power in wide adjusting range, fuel-air ratio also remains unchanged.This is advantage, such as, especially when heating appliances must change in large adjusting range in its power, because should have little performance number for heating but should have high performance number for beam worker commercial water for the house of thermal resistance well.
The infeed of fuel can as or undertaken by the directed pipeline through heating appliances by very short pipeline in T hour.Importantly, the opening of the main throttling of fuel just in the narrow area of Wen carries out instead of carrying out before.
Although be usually arranged on fuel feed fuel control valve in passage also throttling fuel pass through.But the main task of this valve is, provide that have can (in advance) fuel of pressure (usually identical with environmental pressure or substantially the same) of determining, but not for the throttling of fuel of fuel metering.Therefore, main throttling should be interpreted as, can the position that is provided of the fuel of predetermined pressure from having, not strong than the throttling on opening throttling is carried out.
By the feature enumerated in the dependent claims, the favourable remodeling according to the heating appliances of independent claims is possible.Like this, when opening is the gap of annular, feeds proportionate relationship and improve further.Thus, the infeed of fuel makes the whole proportion of flow relation stabilisation around of Wen.
If opening is adjustable, then can compensates manufacturing tolerance in like fashion and different fuel types can be fed and mixed proportion relation can be optimized by regulating opening.Also can compensate simply by the change in the proportionate relationship of the aging geometry that causes or flow technique.
In addition, when opening has columniform infeed passage, proportionate relationship is improved.
If opening has interruption edge, the proportion of flow limited in advance is closed to tie up to and is interrupted edge tightly formation afterwards.Also proportion of flow relation can be optimized by the side on opening is recessed.
When opening constructs like this, fuel can be supplied on the flow direction of moving air fashionable, there is good proportionate relationship.Can regulate flow profile in this way, described flow profile can make fuel stem pure land along the air flowing that will flow.
When opening constructs like this, the fuel of especially gaseous state can be fed like this, when described fuel is especially flowed along the inwall of fuel-air mixing arrangement substantially with large speed, obtain another and improve.This along flowing by inwall, avoid such region, in this region, fuel is fed to the direction of opening again and is disturbed the pressure proportional relation of Wen thus.The pressure energy of fuel is almost converted into speed completely and the high energy of flow of fuel prevents the formation of the recirculation zone on diffusion wall along the diffusion wall of Wen.Diffuser is interpreted as flow channel that slowly open, that conically open.Diffuser is a Wen's part.
In the enforcement of simple especially, constructivity, opening is formed between matrix and sleeve pipe.Then, if sleeve pipe is removable relative to matrix, then the size of opening can be changed in this way.
When sleeve pipe and matrix are interconnected by screw thread, realize the change of opening especially simply.
When being provided with pressure-regulating valve, stress level can regulate very simply.
According to fuel-air mixing arrangement of the present invention, it has air intake, narrow portion position, the opening for feeding fuel be in the region of narrow portion position, wherein, opening adjustable ground is formed, the advantage that described fuel-air mixing arrangement has is, it can make the fuel air mixture regulated in advance remain unchanged in wide power region.This heating appliances especially for such is favourable, and described heating appliances has adjustable air blast in power, described air blast then with fuel-air mixing arrangement cooperation according to the present invention.Air blast can be arranged in before fuel-air mixing arrangement or after being advantageously arranged in fuel-air mixing arrangement in the flowing direction.
Accompanying drawing explanation
Shown in the drawingsly specifically to explain in the following description according to heating appliances of the present invention with according to fuel-air mixing arrangement of the present invention.Accompanying drawing illustrates:
The schematic diagram of the parts of Fig. 1 heating appliances,
Fig. 2 according to the schematic diagram of the functional mode of heating appliances of the present invention,
Fig. 3 according to the sectional view of fuel-air mixing arrangement of the present invention,
Fig. 4 according to the sectional view of IV-IV line in Fig. 3 and
Fig. 5-10 is according to the modification of the possible opening of details V in Fig. 3.
Detailed description of the invention
Schematically show heating appliances 10 in FIG, it comprises air blast 12, burner 14 and fuel-air mixing arrangement 16.Fuel-air mixing arrangement 16 schematically shows in fig. 2, visible in the figure, and in the region of narrow portion position 18, fuel 22 (also being illustrated by arrow) feeds leaked-in air 20 (being illustrated by arrow) through opening 24.Illustrate in figs. 3 and 4, opening 24 is formed substantially circlewise.
Figure 1 illustrates the other assembly according to heating appliances 10 of the present invention.Like this, through fuel channel 26 and fuel control valve 28, fuel 22 feeds fuel-air mixing arrangement 16 by pipeline 30.Fuel control valve 28 is formed like this, makes it that fuel is independently adjusted to the value proportional, identical or substantially the same with environmental pressure with the inlet pressure (Eingangsdruck) of fuel.Pipeline 30 is here illustrated by as independent pipeline.But, especially when fuel control valve 28 is directly connected (as shown in Figure 3) with fuel-air mixing arrangement 16, this pipeline also can as the passage of inside configuration.
In fuel-air mixing arrangement 16, fuel 22 mixes with leaked-in air 20, aspirated by air blast 12 and be fed to burner 14 through feeding cover 32.There is heat exchanger 34 in the arranged beneath of the burner 14 being implemented as sinking burner, before hot water, flow pipeline 36 and reflux line 38 is connected this heat exchanger.Heat exchanger 34 is passed through by the exhaust-gas flow of heat, make described waste gas cool and feed described waste gas to the exhaust piping 40 passing into outlet port 42.
In addition, control device 44 and expansion vessel 46 are installed in heating appliances 10.In addition, determine according to the configuration of heating appliances 10, other assembly can also be provided with, such as additional industry and commerce water heat exchanger or various pump and blender.
Figure 2 illustrates the functional mode according to heating appliances 10 of the present invention.Air blast 12 passes through according to fuel-air mixing arrangement 16 suction of fuel air mixture of the present invention and is transported to burner 14, and burn in the downside of this burner the flame 50 of being monitored by flame monitoring apparatus 48.Fuel-air mixing arrangement 16 according to the present invention has the shape of Venturi tube, and on the entrance 52 of described Venturi tube, surrounding air is sucked and is accelerated until narrow portion position 18.The fuel 22 be under limited pressure in fuel chambers 54 is provided, then substantially to be aspirated in the flowing direction by the opening 24 of annular in the region of narrow portion position 18.Here venturi effect works, and according to venturi effect, the suction of fuel is accelerated due to the air flowed fast.
Pressure proportional relation is regulated like this, makes roughly the same with the pressure of the fuel 22 in fuel chambers 54 by the environmental pressure of air 20 that feeds and realizes correct mixed proportion relation when assembling in narrow portion position 18.Because the importing of fuel gas on direction and speed substantially corresponding to air flowing and wide environment of drawing together again after narrow portion position along Venturi tube carry out, be then implemented relative to being flowing in diffuser of improving significantly of background technology.Thus, air blast 12 can be adjusted and can be affected according to the power provided of heating appliances 10 of the present invention in wide adjusting range.
Illustrate in greater detail in figs. 3 and 4 according to fuel-air mixing arrangement 16 of the present invention.Visible, on narrow portion position 18, opening 24 is formed circlewise and fuel 22 can flow in Wen's assembly from fuel chambers 54 in.Describe, namely when starting to describe details V after the concrete enforcement of opening 24 and its remodeling.Visible, can be given by infeed in the flowing direction along path 56 from the fuel 22 of opening 24s and flow into air 20.
In the extension in path 56, fuel 22 flows along the inwall 58 of fuel-air mixing arrangement 16.In further extending, start the mixing between fuel 22 and air 20, then this mixing all ends at homogeneous mixing in air blast 12.Due to this pressure proportional relation it is possible that the mixed proportion of the optimization of air 20 and fuel 22 close tie up to air blast 12 large adjusting range on remain unchanged.
Opening 24 is configured between the extension of inwall 58 and the pipeline section 60 of entrance 52.This special structure is implemented like this, makes pipeline section 60 removable relative to inwall 58 and opening 24 adjustable ground formation in its size thus.
As seen in Figure 3, pipeline section 60 is parts of sleeve pipe 62, matrix 64 acting in conjunction of this sleeve pipe self and fuel-air mixing arrangement 16.
Fuel chambers 54 is trapped among the inside by inwall 58, pipeline section 60, sleeve pipe 62 and matrix 64.In addition, matrix 64 is configured with the joint 66 for connecting the pipeline 30 for feeding fuel 22.
Matrix 64 and sleeve pipe 62 are interconnected by screw thread 68.It is thus possible that by sleeve pipe 62 relative to the torsion of matrix 64 realize sleeve pipe 62 relative to matrix 64 move axially and opening 24 is conditioned in its size.In the protuberance 69 exceeding screw thread 68 of sleeve pipe 62, be provided with one or more makes fuel chambers 54 to the seal annular seal space 70 in other words of external seal.
The different modification of opening 24 shown in Fig. 5-10.At this, identical parts are arranged with identical reference number respectively.Like this, visible inwall 58 and pipeline section 60 and the opening 24 that is arranged between inwall and pipeline section in Figure 5, this opening due to circle symmetrical, the structure of straight line and form columniform infeed passage 72.Sleeve pipe 62 produces the prolongation or shortening that feed passage 72 relative to the relative movement of matrix 64.The axis of fuel-air mixing arrangement 16 shown in Figure 5, but be removed in the accompanying drawing of this axis below.
In figure 6, the end of inwall 58 section of the mutual sensing of pipeline section 60 is in other words tilt respectively, thus produces gap and the increase that sleeve pipe 62 directly produces opening 24 relative to the movement of matrix 64 reduces in other words.
In the figure 7, the end of inwall 58 section of the mutual sensing of pipeline section 60 in other words has the extension of Curved, the opening 24 of the form of the infeed passage 74 of structure in Curved between described extension.
In figs. 8-10, pipeline section 60 has respectively and interrupts edge 76, described interruption edge in fig. 8 by point to the side of opening 24 recessed 78, in fig .9 by refer to leave mouth 24 side recessed 80 and in Fig. 10 respectively by point to and refer to from side recessed 78,80 form.In addition, as visible in fig. 8, can arrange ladder 79 before side recessed 78, wherein, the span width of the recess 81 formed thus empirically can be asked for and be between 1 millimeter to 10 millimeters.
The modification of Fig. 5-10 combines by suitable mode and optimizes the inflow behavior of fuel 22 relative to air 20 at this.
If be configured in the fuel-air mixing arrangement 16 in various heating appliances, the present invention also relates to a kind of heating appliances 10.
Claims (16)
1. heating appliances (10), it has burner (14), the fuel-air mixing arrangement (16) supported by air blast (12), this fuel-air mixing arrangement is by pipeline (26,30) fuel (22) of especially gaseous state is made to feed to the air (20) of flowing by least one opening (24) in the region of narrow portion position (18), it is characterized in that, described opening (24) represent described fuel in described pipeline (26,30) and and the main throttling be mixed between portion of described air (20).
2. by the heating appliances (10) of claim 1, it is characterized in that, in described pipeline (26,30), be provided with fuel control valve (28), described fuel control valve is can provide described fuel (22) by predetermined pressure.
3. by the heating appliances (10) of one of claim 1 or 2, it is characterized in that, described opening (24) is the gap of annular.
4., by the heating appliances (10) of one of aforementioned claim, it is characterized in that, described opening (24) can regulate.
5., by the heating appliances (10) of one of aforementioned claim, it is characterized in that, described opening (24) has columniform infeed passage (72).
6., by the heating appliances (10) of one of aforementioned claim, it is characterized in that, described opening (24) has interruption edge (76).
7., by the heating appliances (10) of one of aforementioned claim, it is characterized in that, described opening (24) has side recessed (78,80).
8. by the heating appliances (10) of one of aforementioned claim, it is characterized in that, described opening (24) is formed like this, makes described fuel (22) be can feed on the flow direction of the air (20) of flowing.
9. by the heating appliances (10) of one of aforementioned claim, it is characterized in that, described opening (24) is formed like this, described fuel (22) can be fed like this, described fuel is flowed along the inwall (58) of described fuel-air mixing arrangement (16) substantially.
10., by the heating appliances (10) of one of aforementioned claim, it is characterized in that, described opening (24) is configured between matrix (64) and sleeve pipe (62).
11., by the heating appliances (10) of claim 10, is characterized in that, described sleeve pipe (62) can be mobile relative to described matrix (64).
12. by the heating appliances (10) of one of claim 10 or 11, and it is characterized in that, described matrix (64) and described sleeve pipe (62) are interconnected by screw thread (68).
13. by the heating appliances (10) of one of aforementioned claim, it is characterized in that, in described pipeline (26,30), be furnished with fuel control valve (28), described fuel (22) is adjusted on the stress level that can determine by described fuel control valve.
14. fuel-air mixing arrangements (16), it has air intake (52), narrow portion position (18), the opening (24) for feeding fuel (22) be in the region of described narrow portion position, described fuel-air mixing arrangement is particularly useful for being used in the heating appliances (10) according to one of aforementioned claim, it is characterized in that, described opening (24) adjustable ground is formed.
15. fuel-air mixing arrangements (16), it has the opening (24) according to one of claim 3 to 10.
16. fuel-air mixing arrangements (16), it has matrix (64) according to one of claim 10 to 13 and sleeve pipe (62).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201310220950 DE102013220950A1 (en) | 2013-10-16 | 2013-10-16 | Heater with a burner assisted by a fan |
| DE102013220950.9 | 2013-10-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104613495A true CN104613495A (en) | 2015-05-13 |
| CN104613495B CN104613495B (en) | 2018-11-20 |
Family
ID=51626422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410858105.0A Active CN104613495B (en) | 2013-10-16 | 2014-10-15 | Heating utensil with the burner supported by air blower |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2863125A1 (en) |
| CN (1) | CN104613495B (en) |
| DE (1) | DE102013220950A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107543159A (en) * | 2016-06-29 | 2018-01-05 | 林内株式会社 | Burner |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9746176B2 (en) | 2014-06-04 | 2017-08-29 | Lochinvar, Llc | Modulating burner with venturi damper |
| DE102015222950A1 (en) * | 2015-11-20 | 2017-05-24 | Robert Bosch Gmbh | Heater with a burner assisted by a fan |
| DE102016201624A1 (en) | 2016-02-03 | 2017-08-03 | Robert Bosch Gmbh | Fuel-air mixing device for a heater |
| DE102016113588A1 (en) | 2016-07-22 | 2018-01-25 | Ebm-Papst Landshut Gmbh | Gas-air mixing device |
| DE102019217419A1 (en) * | 2019-11-12 | 2021-05-12 | Robert Bosch Gmbh | Mixing device for a fan-operated heater |
| EP3875854B1 (en) * | 2020-03-06 | 2023-11-22 | Robert Bosch GmbH | Burner for the combustion of a fuel / air mixture and heater with such a burner |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3799195A (en) * | 1971-03-17 | 1974-03-26 | Four Industriel Belge | Device for controlling a mixture of two gases |
| DE3724344A1 (en) * | 1987-07-23 | 1989-02-02 | Huels Chemische Werke Ag | Mixing nozzle for mixing two gas streams |
| SU1615467A1 (en) * | 1988-06-03 | 1990-12-23 | Донецкий политехнический институт | Injection burner |
| WO2012007823A1 (en) * | 2010-07-12 | 2012-01-19 | Gas Point S.R.L. | Premix gas burner |
| WO2012156077A1 (en) * | 2011-05-19 | 2012-11-22 | Mtu Friedrichshafen Gmbh | Gas mixer, gas mixing system, gas engine |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2366322A (en) * | 1941-07-21 | 1945-01-02 | Western Products Inc | Gas mixer |
| DE4137573C2 (en) * | 1991-11-15 | 1998-01-15 | Motoren Werke Mannheim Ag | Venturi mixer for mixing gas and air, especially for an internal combustion engine |
| DE19729047C1 (en) * | 1997-07-08 | 1998-09-24 | Honeywell Bv | Air mixer for gas burner |
| AR024718A1 (en) * | 2000-07-12 | 2002-10-23 | Ricardo Cayetano Algeri | COMBUSTIBLE GAS MIXING DEVICE WITH AIR FOR INTERNAL COMBUSTION ENGINES |
| US7788927B2 (en) * | 2005-11-30 | 2010-09-07 | General Electric Company | Turbine engine fuel nozzles and methods of assembling the same |
| BE1018675A3 (en) * | 2009-03-03 | 2011-06-07 | Fib Belgium Sa | DEVICE FOR DETERMINING A GASEOUS MIXTURE. |
| DE102010044591A1 (en) | 2010-09-07 | 2012-03-08 | Honeywell Technologies Sarl | Gas control unit with attached Venturi nozzle |
-
2013
- 2013-10-16 DE DE201310220950 patent/DE102013220950A1/en active Pending
-
2014
- 2014-09-29 EP EP20140186744 patent/EP2863125A1/en not_active Withdrawn
- 2014-10-15 CN CN201410858105.0A patent/CN104613495B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3799195A (en) * | 1971-03-17 | 1974-03-26 | Four Industriel Belge | Device for controlling a mixture of two gases |
| DE3724344A1 (en) * | 1987-07-23 | 1989-02-02 | Huels Chemische Werke Ag | Mixing nozzle for mixing two gas streams |
| SU1615467A1 (en) * | 1988-06-03 | 1990-12-23 | Донецкий политехнический институт | Injection burner |
| WO2012007823A1 (en) * | 2010-07-12 | 2012-01-19 | Gas Point S.R.L. | Premix gas burner |
| WO2012156077A1 (en) * | 2011-05-19 | 2012-11-22 | Mtu Friedrichshafen Gmbh | Gas mixer, gas mixing system, gas engine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107543159A (en) * | 2016-06-29 | 2018-01-05 | 林内株式会社 | Burner |
| CN107543159B (en) * | 2016-06-29 | 2020-08-11 | 林内株式会社 | Combustion apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2863125A1 (en) | 2015-04-22 |
| CN104613495B (en) | 2018-11-20 |
| DE102013220950A1 (en) | 2015-04-16 |
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| GR01 | Patent grant |