CN105202748A - Semi-backdraft type small-size fuel oil and fuel gas hot water boiler - Google Patents

Semi-backdraft type small-size fuel oil and fuel gas hot water boiler Download PDF

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Publication number
CN105202748A
CN105202748A CN201510664477.4A CN201510664477A CN105202748A CN 105202748 A CN105202748 A CN 105202748A CN 201510664477 A CN201510664477 A CN 201510664477A CN 105202748 A CN105202748 A CN 105202748A
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China
Prior art keywords
smoke
flame
smoke pipe
pipe
fuel oil
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CN201510664477.4A
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CN105202748B (en
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吉增其
林国胜
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XINHUA NEW BOILER Manufacturing Co Ltd HEBEI
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XINHUA NEW BOILER Manufacturing Co Ltd HEBEI
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Abstract

The invention provides a semi-backdraft type small-size fuel oil and fuel gas hot water boiler. The semi-backdraft type small-size fuel oil and fuel gas hot water boiler comprises a base, a boiler shell, an outer tank, an inner tank and a combustor, and is characterized in that the inner tank is horizontally arranged along a flame direction and the horizontal length of a combustion room formed by the inner tank is greater than the length of combustion flame; a smoke pipe is vertically arranged above the middle part of the combustion room; the end opening at the lower part of the smoke pipe is located in a central flame region; the horizontal length of the combustion room is greater than the length of the combustion flame; the flame is expanded to combust and the combustion efficiency can be improved; a certain distance is kept from the smoke pipe to the rear end of the inner tank to form backdraft; the central flame is disturbed and cooled and the generation of NOx (namely nitrogen oxides) can be inhibited and environmental friendliness is facilitated; and upward smoke wind resistance of smoke of the vertical type smoke pipe is small, back pressure needing to be overcome by the combustor is small and the working noises of the combustor can be reduced.

Description

A kind of half strile-back type small fuel oil gas-fired water heating boiler
Technical field
The present invention relates to and relate to a kind of heating equipment, particularly relate to a kind of half strile-back type small fuel oil gas-fired water heating boiler.
Background technology
At present, the minitype vertical type fired gas-fired hot water boiler on market is generally circle, can be divided into two large classes by burner installation site, is respectively underneath type and the large series of overhead two, and has following deficiency respectively:
Underneath type burner minitype vertical type fired gas-fired hot water boiler: combustion chamber limits by furnace diameter, combustion flame can not get expanded type burning, causes burning insufficient.Cleaning door and outlet flue share, need by chimney demolition during stove internal flue cleaning dust stratification, very inconvenience;
Overhead burner minitype vertical type fired gas-fired hot water boiler: combustion chamber is vertical, combustion flame obtains expanded type burning, burns also comparatively abundant.But overhead burner is inconvenient to observe burner operation situation, after boiler shutdown, furnace high-temperature flue gas is bound to burner for heating, burner is impacted service life, and due to combustion flame descending, body flue gas resistance back pressure that is large and then that require burner to overcome increases.
And above-mentioned two kinds of minitype vertical type fired gas-fired hot water boilers are downflow type combustion system, Boiler smoke tube is arranged on jet flames end, causes NOx in flue gas (i.e. oxynitrides) content higher, is unfavorable for environmental protection.
And in order to address this problem, existing minitype vertical type fired gas-fired hot water boiler combustion system has employing burning of entirely strile-bacing to improve, the Boiler smoke tube entirely strile-backd is arranged on burner end, strile-back NOx (i.e. oxynitrides) entirely that utilize smoke backflow to reduce burning generation, but NOx (oxynitrides) content produced due to flame of centre region during flame combustion is higher, and said method all effectively can not reduce the content that flame of centre region produces NOx (i.e. oxynitrides), so unsatisfactory to NOx (i.e. oxynitrides) inhibition of burning generation.
Summary of the invention
For the deficiencies in the prior art, the present invention aims to provide a kind of half strile-back type small fuel oil gas-fired water heating boiler, has that the thermal efficiency is high, the feature of energy-conserving and environment-protective.
To achieve these goals, the present invention adopts following technical scheme:
A kind of half strile-back type small fuel oil gas-fired water heating boiler, comprise base, boiler jacket, outer courage, inner bag, burner, the enclosure space that inner bag is formed is combustion chamber, combustion chamber connects upper smoke-box by smoke pipe, upper smoke-box is connected with chimney by smoke outlet flue, forming enclosure space between outer courage and inner bag is water cavity, water cavity top is communicated with expansion tank, it is characterized in that: inner bag is greater than combustion flame length along the horizontal length of the combustion chamber that the horizontally disposed and inner bag of flame direction is formed, smoke pipe is vertically arranged on top in the middle part of combustion chamber, smoke pipe lower port is positioned at flame of centre district.
Smoke pipe passes between outer courage and the closed water cavity of inner bag formation, and the bottom port of smoke pipe and combustion chamber, the top port of smoke pipe is communicated with upper smoke-box, and smoke pipe, built with spoiler, makes flue gas S-shaped at cigarette Bottomhole pressure.
Spoiler is provided with hangers, flue gas pod apertures, gas baffle, gas baffle both sides interlaced arrangement, makes flue gas S-shaped flowing in smoke pipe.
Upper smoke-box is contained on outer courage, and is provided with openable upper smoke-box lid.
Tilted-putted water pipe is housed below combustion chamber, is provided with flame retardant coating above water pipe, thermal insulation layer is arranged at water pipe bottom, and water pipe is communicated with water cavity.
Water cavity offers water return outlet, delivery port, sewage draining exit, atmosphere entry, atmosphere entry is equipped with expansion tank, expansion tank built with ball-cock assembly, the external running water pipe of expansion tank.
Manhole ring is equipped with in inner bag front end, and inner bag is connected with outer courage by manhole ring, manhole cover is equipped with in manhole ring end, manhole cover is equipped with burner and flame-observing mirror, is filled with refractory piece in manhole ring, boiler jacket is also provided with burner control.
Beneficial effect of the present invention is: the horizontal length of combustion chamber is greater than combustion flame length, burn when flame is expanded, efficiency of combustion can be improved, smoke pipe keeps certain distance apart from inner bag rear end, define and strile-back, disturbance, cooling are carried out to flame of centre, NOx (i.e. oxynitrides) can have been suppressed to generate, be beneficial to environmental protection; The up flue gas resistance of vertical smoke tube flue gas is little, and the back pressure requiring burner to overcome is little, can reduce burner operation noise; Smoke pipe makes flue gas S-shaped at cigarette Bottomhole pressure built with spoiler, extends flue gas at cigarette intraductal retention time, improves heat exchange efficiency, can shorten smoke pipe length simultaneously and reduce boiler height.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is spoiler structural representation of the present invention;
Fig. 3 is the left TV structure schematic diagram of Fig. 2.
Detailed description of the invention
Below with reference to accompanying drawing, the invention will be further described, it should be noted that, the present embodiment, premised on the technical program, give detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to the present embodiment.
As Fig. 1, 2, shown in 3, a kind of half strile-back type small fuel oil gas-fired water heating boiler, comprise base 8, boiler jacket 23, outer courage 13, inner bag 10, burner 1, the enclosure space that inner bag 10 is formed is combustion chamber 11, combustion chamber 11 connects upper smoke-box 20 by smoke pipe 21, upper smoke-box 20 is connected with chimney 15 by smoke outlet flue 18, forming enclosure space between outer courage 13 and inner bag 10 is water cavity 12, water cavity 12 top is communicated with expansion tank 17, it is characterized in that: inner bag 10 is greater than combustion flame length along the horizontal length of the combustion chamber 11 that the horizontally disposed and inner bag 10 of flame direction is formed, smoke pipe 21 is vertically arranged on top in the middle part of combustion chamber 11, smoke pipe 21 lower port is positioned at flame of centre district.
Smoke pipe 21 passes between outer courage 13 and the closed water cavity 12 of inner bag 10 formation, and the bottom port of smoke pipe 21 is communicated with combustion chamber 11, and the top port of smoke pipe 21 is communicated with upper smoke-box 20, and smoke pipe 21, built with spoiler 210, makes flue gas S-shaped at cigarette Bottomhole pressure.
Spoiler 210 is provided with hangers 211, flue gas pod apertures 212, gas baffle 213, gas baffle 213 both sides interlaced arrangement, makes flue gas S-shaped flowing in smoke pipe.
Upper smoke-box 20 is contained on outer courage 13, and is provided with openable upper smoke-box lid 19.
Tilted-putted water pipe 7 is equipped with below in combustion chamber 11, and be provided with flame retardant coating 6 above water pipe 7, thermal insulation layer 5 is arranged at water pipe 7 bottom, and water pipe 7 is communicated with water cavity 12.
Water cavity 12 offers water return outlet 26, delivery port 24, sewage draining exit 9, atmosphere entry 25, atmosphere entry 25 is equipped with expansion tank 17, expansion tank 17 built with ball-cock assembly 16, the external running water pipe of expansion tank 17.
Manhole ring 4 is equipped with in inner bag 13 front end, inner bag is connected with outer courage 13 by manhole ring 4, manhole cover 2 is equipped with in manhole ring 4 end, manhole cover is equipped with burner 1 and flame-observing mirror 24, in manhole ring 4, is filled with refractory piece 3, boiler jacket 23 is also provided with burner control 22.
The present invention adopts mode of partly strile-bacing, while utilizing reduction NOx (i.e. oxynitrides) concentration of strile-bacing in Fig. 1, disturbance, cooling can be carried out again to flame of centre, effective suppression flame of centre region NOx (i.e. oxynitrides) generates, in the flue gas that making burns produces, NOx (i.e. oxynitrides) total amount is effectively controlled, adopting vertical smoke tube flue gas simultaneously and arranging spoiler makes flue gas S-shaped at cigarette Bottomhole pressure, extend flue gas at cigarette intraductal retention time, improve heat exchange efficiency, shorten smoke pipe length, reduce boiler height.
Boiler top is provided with smoke-box lid, and opening smoke-box lid can conveniently extract spoiler out and clear up smoke pipe, and the hangers simultaneously spoiler arranged facilitates spoiler suspension to be arranged in smoke pipe; Boiler front end is provided with the convenient inner maintenance of manhole cover; Expansion tank is equipped with at boiler top, establishes ball-cock assembly in expansion tank, can realize automatic water supplement; Water pipe slant setting below combustion chamber is conducive to the water flow heat exchange in water pipe; Boiler is by burner control control realization automatic combustion.
For a person skilled in the art, according to above technical scheme and design, various corresponding change and distortion can be provided, and all these change and distortion all should be included within the protection domain of the claims in the present invention.

Claims (5)

1. one and half strile-back type small fuel oil gas-fired water heating boilers, comprise base (8), boiler jacket (23), outer courage (13), inner bag (10), burner (1), the enclosure space that inner bag (10) is formed is combustion chamber (11), combustion chamber (11) is by smoke-box (20) in smoke pipe (21) connection, upper smoke-box (20) is connected with chimney (15) by smoke outlet flue (18), forming enclosure space between outer courage (13) and inner bag (10) is water cavity (12), water cavity (12) top is communicated with expansion tank (17), it is characterized in that: inner bag (10) is greater than combustion flame length along the horizontal length of the combustion chamber (11) that the horizontally disposed and inner bag (10) of flame direction is formed, smoke pipe (21) is vertically arranged on top, middle part, combustion chamber (11), smoke pipe (21) lower port is positioned at flame of centre district.
2. a kind of half strile-back type small fuel oil gas-fired water heating boiler according to claim 1, it is characterized in that: pass between the closed water cavity (12) that smoke pipe (21) is formed from outer courage (13) and inner bag (10), the bottom port of smoke pipe (21) is communicated with combustion chamber (11), the top port of smoke pipe (21) is communicated with upper smoke-box (20), smoke pipe (21), built with spoiler (210), makes flue gas S-shaped at cigarette Bottomhole pressure.
3. a kind of half strile-back type small fuel oil gas-fired water heating boiler according to claim 2, it is characterized in that: spoiler (210) is provided with hangers (211), flue gas pod apertures (212), gas baffle (213), gas baffle (213) both sides interlaced arrangement, makes flue gas S-shaped flowing in smoke pipe.
4. a kind of half strile-back type small fuel oil gas-fired water heating boiler according to claim 1, is characterized in that: upper smoke-box (20) is contained on outer courage (13), and is provided with openable upper smoke-box lid (19).
5. a kind of half strile-back type small fuel oil gas-fired water heating boiler according to claim 1, it is characterized in that: combustion chamber (11) are equipped with tilted-putted water pipe (7) below, water pipe (7) top is provided with flame retardant coating (6), thermal insulation layer (5) is arranged at water pipe (7) bottom, and water pipe (7) is communicated with water cavity (12).
CN201510664477.4A 2015-10-13 2015-10-13 A kind of half strile-back type small fuel oil gas-fired water heating boiler Active CN105202748B (en)

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CN201510664477.4A CN105202748B (en) 2015-10-13 2015-10-13 A kind of half strile-back type small fuel oil gas-fired water heating boiler

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105547027A (en) * 2016-02-02 2016-05-04 宁波科莱尔节能科技股份有限公司 Turbulent heat exchanger
CN107131493A (en) * 2017-06-29 2017-09-05 辽宁柯尔克锅炉制造有限公司 A kind of gas fuel steam, hot-water boiler
CN107880905A (en) * 2017-12-15 2018-04-06 中冶焦耐(大连)工程技术有限公司 A kind of new coke oven combustion chamber flue structure

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55165440A (en) * 1979-06-08 1980-12-23 Mitsubishi Electric Corp Hot water boiler
CN2217757Y (en) * 1995-04-07 1996-01-17 铁广炎 Oil-burning water-heating stove with waste-heat heated water-tank
CN102121749A (en) * 2011-04-14 2011-07-13 刘同柱 Vertical atmospheric pressure boiler
CN102494341A (en) * 2011-12-16 2012-06-13 哈尔滨工业大学 Fire barrel type gas burner
CN204593835U (en) * 2015-03-30 2015-08-26 李佳祥 Vertical and horizontal oil-burning gas-fired boiler
CN205037554U (en) * 2015-10-13 2016-02-17 河北鑫华新锅炉制造有限公司 Small -size fuel gas boiler of formula of partly strile -bacing

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55165440A (en) * 1979-06-08 1980-12-23 Mitsubishi Electric Corp Hot water boiler
CN2217757Y (en) * 1995-04-07 1996-01-17 铁广炎 Oil-burning water-heating stove with waste-heat heated water-tank
CN102121749A (en) * 2011-04-14 2011-07-13 刘同柱 Vertical atmospheric pressure boiler
CN102494341A (en) * 2011-12-16 2012-06-13 哈尔滨工业大学 Fire barrel type gas burner
CN204593835U (en) * 2015-03-30 2015-08-26 李佳祥 Vertical and horizontal oil-burning gas-fired boiler
CN205037554U (en) * 2015-10-13 2016-02-17 河北鑫华新锅炉制造有限公司 Small -size fuel gas boiler of formula of partly strile -bacing

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105547027A (en) * 2016-02-02 2016-05-04 宁波科莱尔节能科技股份有限公司 Turbulent heat exchanger
CN107131493A (en) * 2017-06-29 2017-09-05 辽宁柯尔克锅炉制造有限公司 A kind of gas fuel steam, hot-water boiler
CN107880905A (en) * 2017-12-15 2018-04-06 中冶焦耐(大连)工程技术有限公司 A kind of new coke oven combustion chamber flue structure

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