CN103148492A - Combustion device - Google Patents
Combustion device Download PDFInfo
- Publication number
- CN103148492A CN103148492A CN2012105175516A CN201210517551A CN103148492A CN 103148492 A CN103148492 A CN 103148492A CN 2012105175516 A CN2012105175516 A CN 2012105175516A CN 201210517551 A CN201210517551 A CN 201210517551A CN 103148492 A CN103148492 A CN 103148492A
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- CN
- China
- Prior art keywords
- exhaust
- burning
- hood
- gas
- burner
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J13/00—Fittings for chimneys or flues
- F23J13/02—Linings; Jackets; Casings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L17/00—Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues
- F23L17/02—Tops for chimneys or ventilating shafts; Terminals for flues
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M9/00—Baffles or deflectors for air or combustion products; Flame shields
- F23M9/003—Baffles or deflectors for air or combustion products; Flame shields in flue gas ducts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2213/00—Chimneys or flues
- F23J2213/10—Linings
Abstract
The invention provides a combustion device comprising a combustion frame provided with a combustor therein, a fan supplying air for combustion into the combustion frame, a heat exchanger disposed above the combustion frame and an exhaust hood arranged above the heat exchanger. Combustion exhaust is discharged via a barrel-shaped exhaust port extending from the upper wall portion of the exhaust hood to the top. The combustion device comprises an exhaust restricting barrel (63) which is inserted to the exhaust port from the bottom. The combustion device has the advantages that the fan noise can be reduced and Helmholtz resonance noise can also be reduced. A barrel part (632) erecting towards the top is formed on the periphery of an annular flange part (631) extending from the lower end of the exhaust restricting barrel (63) to the radial outside. The upper end of the barrel part (632) is fixed to an opening edge of the exhaust port in the upper wall portion of the exhaust hood. A plurality of ventilation holes (633) allowing the combustion exhaust to pass through are arranged in the barrel part circumferentially in a spaced manner.
Description
Technical field
The present invention relates to burner, this burner possesses: the burning frame, and this burning frame is built-in with burner; Fan, this fan is supplied to combustion air in the burning frame; And heat exchanger, this heat exchanger arrangement is in the top of burning frame, and by the heating of the burning and gas-exhausting of burner.
Background technology
In the past, this burner possesses hood, this hood is disposed at the top of heat exchanger, the burning and gas-exhausting that has passed through at heat exchanger flows into this hood, and burning and gas-exhausting is discharged towards the outside with the aiutage that is connected with this exhaust outlet via the exhaust outlet of the tubular that extends towards the top from the upper wall portions of hood.
Yet, as mentioned above, produce the sympathetic response of Helmholtz's type in the burner that possesses burning frame, heat exchanger and hood.The path length that the sectional area that is made as V, exhaust channel from burning frame to the internal volume of hood is made as S, exhaust channel is made as L, velocity of sound is made as C, and above-mentioned resonance frequency f is according to (1) Shi Kede, i.e. f=(C/2 π) S/(VL) }
1/2(1).And, during near the frequency of the combustion vibration of burner, produce the noise that is caused by sympathetic response when resonance frequency.Therefore, in order to reduce noise, need to make resonance frequency be different from the combustion vibration frequency.
In this case, consider to make resonance frequency less than the combustion vibration frequency by the sectional area that reduces exhaust outlet.Yet this also causes the diameter of the aiutage that is connected with exhaust outlet to diminish.Therefore, the burning and gas-exhausting in aiutage to pass through resistance excessive, the revolution of required fan increases for the combustion air of supplying with aequum, thereby causes fan noise to increase.
Therefore, in the past, known according to patent documentation 1 have a following burner: in hood be positioned at exhaust outlet below the position, be provided with the large baffle plate of sectional area of Area Ratio exhaust outlet, be formed with the airspace that burning and gas-exhausting is guided to exhaust outlet between the upper wall portions lower surface of baffle plate and hood.In this burner, utilize the baffle plate prevention to flow towards the direct of exhaust outlet by the burning and gas-exhausting of heat exchanger, burning and gas-exhausting flow to exhaust outlet via above-mentioned exhaust clearance.And, airspace forms acoustic resistance, can access the effect that is equal to the long L of exhaust channel that increases above-mentioned (1) formula, even do not reduce the sectional area of exhaust outlet, also can make resonance frequency less than the combustion vibration frequency, thereby can reduce the sympathetic response noise of Helmholtz's type.
Yet, in this burner, because whole burning and gas-exhaustings flows through exhaust clearance, therefore can't make burning and gas-exhausting pass through resistance enough little, have to than highland raising fan revolution.Therefore, even in this burner, also be difficult to reduce fan noise.
In addition, in the past, also sold on market and possessed the burner that is inserted into exhaust outlet and the diameter exhaust restriction cylinder less than the diameter of exhaust outlet from the below.Exhaust restriction cylinder has from its lower end the flange part of the ring-type of extending towards radial outside, and this flange part is fixed in the opening edge of exhaust outlet of the upper wall portions of hood, and burning and gas-exhausting is via exhaust restriction cylinder and flow to exhaust outlet.In this burner, utilize exhaust restriction cylinder can access the effect that is equal to the exhaust channel sectional area S that reduces above-mentioned (1) formula, even do not reduce the sectional area of exhaust outlet, also can make resonance frequency less than the combustion vibration frequency, thereby can reduce the sympathetic response noise of Helmholtz's type.
Yet, if insufficient sectional area that reduces exhaust restriction cylinder can't obtain above-mentioned effect.Therefore, even in this burner, also can't fully reduce the resistance that passes through of burning and gas-exhausting, be difficult to reduce fan noise.
Patent documentation 1: TOHKEMY 2007-3175 communique
Summary of the invention
The present invention completes in view of above situation, and its problem is the burner that possesses exhaust restriction cylinder is improved, thereby the burner of the sympathetic response noise that can reduce fan noise and also can reduce Helmholtz's type is provided.
in order to solve above-mentioned problem, burner of the present invention possesses: the burning frame, and this burning frame is built-in with burner, fan, this fan is supplied with combustion air in the burning frame, heat exchanger, this heat exchanger arrangement be in the top of burning frame, and by the heating of the burning and gas-exhausting of burner, and hood, this hood is disposed at the top of heat exchanger, the burning and gas-exhausting that has passed through at heat exchanger flows into this hood, above-mentioned burner forms burning and gas-exhausting and discharges via the exhaust outlet of the tubular that extends towards the top from the upper wall portions of hood, described burner is characterised in that, described burner possesses exhaust restriction cylinder, this exhaust restriction cylinder is inserted into exhaust outlet from the below, and diameter is less than the diameter of exhaust outlet, exhaust restriction cylinder has from the lower end of this exhaust restriction cylinder the flange part of the ring-type of extending towards radial outside, this flange part is fixed in the opening edge of exhaust outlet of the upper wall portions of hood, the periphery of flange part be formed with towards above the cylinder section that erects, flange part is fixed in the opening edge of exhaust outlet of the upper wall portions of hood by the upper end of cylinder section, and, offer a plurality of passages that pass through for burning and gas-exhaustings along the circumferentially spaced compartment of terrain in cylinder section.
According to the present invention, the burning and gas-exhausting that has passed through at heat exchanger not only flow to exhaust outlet via exhaust restriction cylinder, also flow to exhaust outlet via the passage that is opened in a section, therefore, even the sectional area for the effect of the sympathetic response noise of the Helmholtz's type that can be reduced with exhaust restriction cylinder reduces, the resistance that passes through of burning and gas-exhausting also reduces.Therefore, the revolution that increases fan gets final product with exceeding, can reduce fan noise.In addition, the burning and gas-exhausting that flows into from each passage is in case after radially inner side flows, just can be crooked mobile upward towards exhaust outlet, therefore the streamline of burning and gas-exhausting is elongated, and, the burning and gas-exhausting that flows into from each passage, with mutually collide from the burning and gas-exhausting that flows into along the circumferential passage of adjacency, form acoustic resistance.Therefore, the flowing of burning and gas-exhausting that flows into from passage can be brought into play the effect that is equal to the long L of exhaust channel that increases above-mentioned (1) formula.Therefore, even form the sympathetic response noise that passage also can reduce Helmholtz's type.
In addition, when the gross area of the whole passages that are formed at a section less than the sectional area of exhaust restriction cylinder 25% the time, can't fully reduce the resistance that passes through of burning and gas-exhausting, and, when the gross area of whole passages greater than the sectional area of exhaust restriction cylinder 50% the time, the effect of the acoustic resistance that passage has weakens, thereby can't fully reduce the sympathetic response noise of Helmholtz's type.Therefore, preferred, all the gross area of passages be exhaust restriction cylinder sectional area 25% ~ 50%.
Description of drawings
Fig. 1 is the front view of the burner of embodiments of the present invention.
Fig. 2 is that the II-II line along Fig. 1 is dissectd the hood that obtains and for the cross-sectional side elevational view of gas hood.
Fig. 3 is that the III-III line along Fig. 2 is dissectd the hood that obtains and for the cross-sectional side elevational view of gas hood.
Description of reference numerals:
2 ... burner; 3 ... the burning frame; 4 ... fan; 5 ... heat exchanger; 6 ... hood; 61 ... exhaust outlet; 63 ... exhaust restriction cylinder; 64 ... flange part; 65 ... cylinder section; 66 ... passage.
The specific embodiment
Fig. 1 illustrates the burner that is made of with heat source machine the water supply that is arranged within doors.This burner possesses external shell 1.Dispose in external shell 1: the burning frame 3 that is built-in with the burner 2 of a plurality of bias combustion formulas; The fan 4 of the below of burning frame 3; The water supply heat exchanger 5 of the top of burning frame 3; The hood 6 of the top of heat exchanger 5; And with hood 6 cover for gas hood 7.And, utilize fan 4 via for gas hood 7 with the air supply pipe 72(that is connected for gas hood 7 with reference to Fig. 2) attract from the extraneous gas that omits illustrated inflator towards the room extension, and this extraneous gas is supplied in the frame 3 that burns as combustion air.The burning and gas-exhausting of burner 2 flow to heat exchanger 5 from burning frame 3, and with this extraneous gas heating.And, flow into hood 6 by the burning and gas-exhausting of heat exchanger 5, and discharge outside the room via the illustrated aiutage of the omission of the inboard of inflator from hood 6.
With reference to Fig. 2, Fig. 3, have the air supply opening 71 of the tubular of extension from the upper wall portions of this confession gas hood 7 towards the top for gas hood 7, this air supply opening 71 is connected with inflator.In addition, open wide for the rear surface (being right-hand surface in Fig. 2) of gas hood 7, air supply pipe 72 is connected with this rear surface.And, from the extraneous gas of inflator via air supply opening 71 and divide in being directed to air supply pipe 72 for the space between the hood 6 in gas hood 7.
Hood 6 has the exhaust outlet 61 of the tubular that extends towards the top from the upper wall portions of this hood 6, and this exhaust outlet 61 is connected with aiutage.Week is equipped with the discharge casing 62 of tubular in the top of exhaust outlet 61, and this discharge casing 62 is taken in the discharge water that produces because of the condensing in aiutage of the moisture in burning and gas-exhausting.The drainpipe 62a that will be communicated with the bottom of discharge casing 62 in addition, and exhaust outlet 61 link.Drainpipe 62a passes air supply opening 71 and is side-prominent outwardly, is equipped with in the outer end of drainpipe 62a and covers 62b.And, unload by covering 62b, the discharge water that lodges in discharge casing 62 can be discharged via drainpipe 62a.
Also be provided with exhaust restriction cylinder 63 at hood 6, this exhaust restriction cylinder 63 is inserted into exhaust outlet 61 from the below, and diameter is less than the diameter of exhaust outlet 61.Exhaust restriction cylinder 63 has the flange part 64 that extends towards radial outside from the lower end of this exhaust restriction cylinder 63.The periphery of flange part 64 be formed with towards above the cylinder section 65 that erects.And, the crooked edge 65a of flange part 64 in the upper end of cylinder section 65 is fixed in the opening edge subordinate surface of exhaust outlet 61 of the upper wall portions of hood 6.
Here, if reduce the sectional area of exhaust restriction cylinder 63, can access the effect identical with the exhaust channel sectional area S that reduces above-mentioned (1) formula, make resonance frequency less than the combustion vibration frequency, thereby can reduce the sympathetic response noise of Helmholtz's type.Yet, like this, the increasing by resistance of the burning and gas-exhausting in exhaust restriction cylinder 63, the revolution of required fan 4 increases for the combustion air of supplying with aequum, thereby causes the fan noise increase.
Therefore, in the present embodiment, section 65 is being formed with a plurality of passages 66 that burning and gas-exhausting is passed with making progress devices spaced apart week at cylinder.Thus, burning and gas-exhausting not only flow to exhaust outlet 61 via exhaust restriction cylinder 63, also flow to exhaust outlet 61 via passage 66, therefore, even the sectional area for the effect of the sympathetic response noise of the Helmholtz's type that can be reduced with exhaust restriction cylinder 63 reduces, the resistance that passes of burning and gas-exhausting also reduces.Therefore, the revolution that increases fan 4 gets final product with exceeding, can reduce fan noise.
In addition, as shown in Fig. 2 arrow, the burning and gas-exhausting that flows into from each passage 66 is in case after radially inner side flows, just towards exhaust outlet 62 crooked flowing upward, thereby the streamline of burning and gas-exhausting is elongated.And then, the burning and gas-exhausting that flows into from each passage 66, with mutually collide from the burning and gas-exhausting that flows into along the circumferential passage 66 of adjacency, form acoustic resistance.Therefore, the flowing of burning and gas-exhausting that flows into from passage 66 can be brought into play the effect identical with the long L of exhaust channel that increases above-mentioned (1) formula.Therefore, even be formed with passage 66, also can reduce the sympathetic response noise of Helmholtz's type.
In addition, can confirm following situation from experimental result: when the gross area of the whole passages 66 that are formed at a section 65 less than the sectional area of exhaust restriction cylinder 63 25% the time, can't fully reduce the resistance that passes through of burning and gas-exhausting, and, when the gross area of whole passages 66 greater than the sectional area of exhaust restriction cylinder 63 50% the time, the effect of the acoustic resistance that passage 66 has weakens, thereby can't fully reduce the sympathetic response noise of Helmholtz's type.Therefore, preferred, all the gross area of passages 66 be exhaust restriction cylinder 63 sectional area 25% ~ 50%.
In the present embodiment, the diameter (internal diameter) that makes exhaust restriction cylinder 63 is 8mm for the diameter (internal diameter) of 42mm, cylinder section 65 for the height of 86mm, cylinder section 65, at the cylinder section 65 circumferential passages 66 that equally spaced form the square hole shape of 32 wide 3mm, high 5mm in edge.In this case, the gross area (=480mm of whole passages 66
2) be about sectional area (the ≈ 1385mm of exhaust restriction cylinder 63
2) 35%.
Above, although with reference to accompanying drawing, embodiments of the present invention are illustrated, the invention is not restricted to this.For example, form a plurality of apertures that burning and gas-exhausting is passed at flange part 64, the resistance that passes through of burning and gas-exhausting is further reduced.Yet, different from the passage 66 that is formed at a section 65 in above-mentioned hole, can't obtain the effect of acoustic resistance.Therefore, in order to reduce the sympathetic response noise of Helmholtz's type, the gross area that need to make the whole holes that are formed at flange part 64 is below 15% of the gross area of whole passages 66.
In addition, according to above-mentioned embodiment, the present invention is applicable to the burner that the water supply by the heat exchanger 5 with water supply use consists of with heat source machine, but the present invention can be applicable to have the burner of the heat exchanger of the purposes beyond heating such water supply equally.
Claims (2)
1. burner possesses:
The burning frame, this burning frame is built-in with burner;
Fan, this fan is supplied with combustion air in the burning frame;
Heat exchanger, this heat exchanger arrangement be in the top of burning frame, and by the heating of the burning and gas-exhausting of burner; And
Hood, this hood is disposed at the top of heat exchanger, and the burning and gas-exhausting that has passed through at heat exchanger flows into this hood,
Described burner forms burning and gas-exhausting and discharges via the exhaust outlet of the tubular that extends towards the top from the upper wall portions of hood,
Described burner is characterised in that,
Described burner possesses exhaust restriction cylinder, this exhaust restriction cylinder is inserted into exhaust outlet from the below, and diameter is less than the diameter of exhaust outlet, exhaust restriction cylinder has from the lower end of this exhaust restriction cylinder the flange part of the ring-type of extending towards radial outside, this flange part is fixed in the opening edge of exhaust outlet of the upper wall portions of hood
The periphery of flange part be formed with towards above the cylinder section that erects, flange part is fixed in the opening edge of exhaust outlet of the upper wall portions of hood by the upper end of cylinder section, and, offer a plurality of passages that pass through for burning and gas-exhaustings along the circumferentially spaced compartment of terrain in cylinder section.
2. burner according to claim 1, is characterized in that,
The gross area that is formed at whole passages of described cylinder section be described exhaust restriction cylinder sectional area 25% ~ 50%.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011268243A JP5421981B2 (en) | 2011-12-07 | 2011-12-07 | Combustion device |
| JP2011-268243 | 2011-12-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103148492A true CN103148492A (en) | 2013-06-12 |
| CN103148492B CN103148492B (en) | 2016-03-23 |
Family
ID=48546716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210517551.6A Active CN103148492B (en) | 2011-12-07 | 2012-12-05 | Burner |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5421981B2 (en) |
| KR (1) | KR101373451B1 (en) |
| CN (1) | CN103148492B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107367067A (en) * | 2016-05-12 | 2017-11-21 | 林内株式会社 | Burner |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110966636B (en) * | 2018-09-28 | 2021-10-12 | 宁波方太厨具有限公司 | Wind pressure resistant smoke tube |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1335267A (en) * | 1971-03-04 | 1973-10-24 | Hitachi Ltd | Heat exchanger |
| JPH06147454A (en) * | 1992-11-09 | 1994-05-27 | Matsushita Electric Ind Co Ltd | Premixing low noise burner |
| CN2716719Y (en) * | 2004-06-15 | 2005-08-10 | 上海能率有限公司 | Noise reduction exhaust passage structure of gas water heater |
| DE202005010473U1 (en) * | 2005-07-04 | 2005-09-15 | Bosch Gmbh Robert | Heating appliance has silencing unit constructed as Helmholzt resonator or as Lamda quarter wave tube with least one sound opening, and with membrane in form of film covering aforesaid opening |
| JP2007003175A (en) * | 2005-05-23 | 2007-01-11 | Rinnai Corp | Combustion device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4729820U (en) * | 1971-04-26 | 1972-12-05 | ||
| JPS5131391Y2 (en) * | 1973-01-20 | 1976-08-06 | ||
| JPS49150950U (en) * | 1973-04-25 | 1974-12-27 | ||
| JPS56173840U (en) * | 1980-05-23 | 1981-12-22 | ||
| JPS5923529U (en) * | 1982-08-05 | 1984-02-14 | ヤマハ株式会社 | Exhaust system for combustion appliances |
| JP3540443B2 (en) * | 1995-06-23 | 2004-07-07 | 三洋電機株式会社 | Silencer in combustion equipment |
| JP3793364B2 (en) * | 1999-04-07 | 2006-07-05 | リンナイ株式会社 | Combustion appliance exhaust fittings |
| JP3873249B2 (en) * | 2001-02-09 | 2007-01-24 | 五洋建設株式会社 | Chimney dismantling method and apparatus |
-
2011
- 2011-12-07 JP JP2011268243A patent/JP5421981B2/en active Active
-
2012
- 2012-12-05 CN CN201210517551.6A patent/CN103148492B/en active Active
- 2012-12-06 KR KR1020120141250A patent/KR101373451B1/en active IP Right Grant
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1335267A (en) * | 1971-03-04 | 1973-10-24 | Hitachi Ltd | Heat exchanger |
| JPH06147454A (en) * | 1992-11-09 | 1994-05-27 | Matsushita Electric Ind Co Ltd | Premixing low noise burner |
| CN2716719Y (en) * | 2004-06-15 | 2005-08-10 | 上海能率有限公司 | Noise reduction exhaust passage structure of gas water heater |
| JP2007003175A (en) * | 2005-05-23 | 2007-01-11 | Rinnai Corp | Combustion device |
| DE202005010473U1 (en) * | 2005-07-04 | 2005-09-15 | Bosch Gmbh Robert | Heating appliance has silencing unit constructed as Helmholzt resonator or as Lamda quarter wave tube with least one sound opening, and with membrane in form of film covering aforesaid opening |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107367067A (en) * | 2016-05-12 | 2017-11-21 | 林内株式会社 | Burner |
| CN107367067B (en) * | 2016-05-12 | 2020-10-20 | 林内株式会社 | Combustion apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2013120014A (en) | 2013-06-17 |
| CN103148492B (en) | 2016-03-23 |
| JP5421981B2 (en) | 2014-02-19 |
| KR101373451B1 (en) | 2014-03-13 |
| KR20130064030A (en) | 2013-06-17 |
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