CN102121747B - Boiler - Google Patents
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- CN102121747B CN102121747B CN 201010609609 CN201010609609A CN102121747B CN 102121747 B CN102121747 B CN 102121747B CN 201010609609 CN201010609609 CN 201010609609 CN 201010609609 A CN201010609609 A CN 201010609609A CN 102121747 B CN102121747 B CN 102121747B
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- boiler
- water tank
- burner hearth
- combustion chamber
- smoke
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Abstract
The embodiment of the invention discloses a boiler, comprising a water tank, a smoke discharging tube, a combustion chamber and a fuel supply device, wherein the water tank is internally provided with a hearth; one end of the smoke discharging tube is connected with the smoke outlet of the hearth, the other end of the smoke discharging tube penetrates to the outside of the hearth, and the part of the smoke discharging tube in the hearth is spirally distributed; the combustion chamber is arranged at the bottom of the hearth and is communicated with the hearth; and the fuel supply device is connected with a feeding hole of the combustion chamber. In the boiler provided by the embodiment of the invention, the hearth of the boiler is arranged in the water tank, the smoke discharging tube is connected with a smoke outlet of the hearth, the part of the smoke discharging tube in the water tank is spirally distributed, and the smoke discharging tube penetrates to the outside of the water tank and smoke is discharged; the smoke discharging tube is spirally arranged, thus the time for discharging high temperature smoke is prolonged, heat exchange is fully carried out between the smoke in the smoke discharging tube and the hearth and the water in the water tank, and the heat energy utilization rate of the high temperature smoke is improved; and heating is carried out by adopting a 'fire in water' manner in the structure of the boiler, and the smoke discharging tube penetrates through the water tank, thus the defect that a water pipe is blocked by scale in the traditional boiler is avoided and the fault rate is reduced.
Description
Technical field
The present invention relates to boiler manufacturing technology field, more particularly, relate to a kind of boiler.
Background technology
Boiler is a kind of commonplace thermal energy exchange equipment, and the burning by fuel realizes the heating liquid in the boiler.Usually boiler is used for water is heated, and is applied to warm oneself, has a bath, the every aspect of the life such as drinking water.
The mode of heating of existing boiler is, is provided with water pipe in the burner hearth mid-game of boiler, and water pipe is connected with the water tank of boiler, in the process of heating, the high-temperature flue gas that burning produces in the burner hearth heats water pipe, be transported in the water tank of boiler after water is heated in water pipe, thereby realization is to the heating of water.
Above-mentioned boiler is in the process of heating, the high-temperature flue gas that produces after fuel burns in burner hearth is because temperature is higher, the speed that thermal current rises after producing is very fast, from boiler, discharge very soon behind the zone that high-temperature flue gas distributes through water pipe, the boiler of this mode of heating is when work, high-temperature flue gas is very short to the heat time heating time of water pipe, so a large amount of flue gases that produce after the burning just are discharged from a short period of time, heat of high temperature in the flue gas is not completely absorbed, cause the waste of heat energy, the heat utilization rate that fuel combustion produces is low.
Simultaneously, when the high-temperature flue gas that burning produces in the above-mentioned boiler heats water pipe, because water pipe is by direct-fired parts, after work a period of time, the inwall of water pipe can produce one deck incrustation scale, not only affected the efficiency of heating surface to water in the water pipe, also caused easily water pipe blocked, so that the fault rate of boiler is higher.
Summary of the invention
In view of this, the invention provides a kind of boiler, to improve the utilization efficiency of heat energy that fuel in the boiler is produced, reduced simultaneously the fault rate of boiler.
In order to achieve the above object, the embodiment of the invention provides following technical scheme:
A kind of boiler comprises:
Water tank is provided with burner hearth in this water tank;
One end links to each other with the exhanst gas outlet of described burner hearth, and the other end passes the smoke exhaust pipe of described burner hearth, and this smoke exhaust pipe is arranged in the position Spiral distribution of burner hearth;
Be arranged on the bottom of described burner hearth, and the combustion chamber that communicates with described burner hearth;
The fuel supply system that is connected with the charging aperture of described combustion chamber.
Preferably, in the above-mentioned boiler, described smoke exhaust pipe is arranged on the outer wall at position of described water tank and is provided with heat exchanging fin.
Preferably, in the above-mentioned boiler, described smoke exhaust pipe passes on the end of described water tank and is provided with disposal box, is provided with the multi-disc screen pack in this disposal box.
Preferably, in the above-mentioned boiler, be provided with heat-insulation layer on the outer wall of described water tank.
Preferably, in the above-mentioned boiler, be provided with wind complement port on the inwall at the top of described burner hearth, and be provided with the benefit air compartment that communicates with described wind complement port on the outer wall at the top of described burner hearth, the air inlet of described benefit air compartment is provided with secondary air channel.
Preferably, in the above-mentioned boiler, described benefit air compartment is that annular is mended air compartment, and wind complement port is arranged on the inwall of described roof of the furnace equably.
Preferably, in the above-mentioned boiler, described combustion chamber comprises:
Burning groove, be provided with fire rod on its bottom surface, and be provided with air admission hole on the bottom surface of the feed end of described burning groove, be provided with on the bottom surface of the slag output end of described burning groove towards the deslagging of the direction rotation of the slag notch of described combustion chamber and roll cage, it is tubular structure that this deslagging rolls cage, is provided with air admission hole on its barrel;
Be arranged on described burning groove below, and roll the air inlet interlayer that the air admission hole on the cage communicates with air admission hole and the deslagging of described feed end;
Output and described deslagging roll the motor of slagging tap that the rotating shaft of cage is connected.
Preferably, in the above-mentioned boiler, described fuel supply system comprises:
Hopper, its bottom is provided with the feed pipe with the feeding inlet of described combustion chamber;
Be arranged on the follower arm in the described feed pipe, be provided with flight on this follower arm;
The charging motor that output is connected with described follower arm.
Preferably, in the above-mentioned boiler, described hopper is broach hopper, and described feed pipe is arranged on the less bottom of described hopper cross-sectional area.
Preferably, in the above-mentioned boiler, also comprise the ash bucket of the slag notch below that is arranged on described combustion chamber.
As shown from the above technical solution, in the boiler that the embodiment of the invention provides, the burner hearth of boiler is arranged in the water tank, and link to each other with the exhanst gas outlet of burner hearth by smoke exhaust pipe, and this smoke exhaust pipe is arranged in the position Spiral distribution of water tank, finally pass water tank and smoke evacuation, high-temperature flue gas heats the water in the water tank by smoke exhaust pipe in the said structure, the spiral setting of smoke exhaust pipe has prolonged the time that high-temperature flue gas is discharged from, so that the flue gas in smoke exhaust pipe and the burner hearth fully with water tank in water carry out heat exchange, improved the heat utilization rate to high-temperature flue gas, simultaneously because this structure adopts the mode of water bag fire to heat, smoke exhaust pipe passes water tank, so the water pipe that does not have existing boiler has been reduced fault rate by the problem that incrustation scale blocks.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The plan structure schematic diagram of the boiler that Fig. 1 provides for the embodiment of the invention;
Fig. 2 is the right view of Fig. 1;
Fig. 3 be among Fig. 1 B-B to the sectional structure schematic diagram;
Fig. 4 be among Fig. 1 A-A to the sectional structure schematic diagram;
The part-structure schematic diagram of the boiler that Fig. 5 provides for the embodiment of the invention;
The part-structure schematic diagram of the boiler that Fig. 6 provides for the embodiment of the invention.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, the every other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work belongs to the scope of protection of the invention.
The invention provides a kind of boiler, improved the utilization ratio to fuel thermal energy in the boiler, reduced simultaneously the fault rate of boiler.
Please refer to accompanying drawing 1-6, the plan structure schematic diagram of the boiler that provides in the embodiment of the invention is provided Fig. 1; Fig. 2 is the right view of Fig. 1; Fig. 3 be among Fig. 1 B-B to the sectional structure schematic diagram; Fig. 4 be among Fig. 1 A-A to the sectional structure schematic diagram; The part-structure schematic diagram of the boiler that provides in the embodiment of the invention is provided Fig. 5; The part-structure schematic diagram of the boiler that Fig. 6 provides for the embodiment of the invention.
The boiler that the embodiment of the invention provides comprises water tank 9, smoke exhaust pipe 6, burner hearth 5, combustion chamber 1 and fuel supply system, wherein:
One end of smoke exhaust pipe 6 links to each other with the exhanst gas outlet of burner hearth 5, and the other end passes burner hearth 5, and smoke exhaust pipe 6 is arranged in the position Spiral distribution of burner hearth 5;
Fuel supply system is connected with the charging aperture of combustion chamber 1, is used for to the combustion chamber 1 transfer the fuel.
In the boiler that the embodiment of the invention provides, by fuel supply system transfer the fuel in the combustion chamber 1, fuel is after the high-temperature flue gas that combustion chamber 1 internal combustion produces passes through burner hearth 5, enter into smoke exhaust pipe 6, smoke exhaust pipe 6 is arranged in the position Spiral distribution of burner hearth 5, with the heating of the water in the boiler water tank 9, the flue gas after final heat is fully absorbed is discharged from the outlet of smoke exhaust pipe 6 by smoke exhaust pipe 6.
In the boiler that provides in the embodiment of the invention, changed the mode of heating of traditional fiery Bao Shui, adopt the mode of heating of water bag fire, the smoke exhaust pipe 6 that namely passes at high-temperature flue gas (being thermal source) passes water tank 9, like this burner hearth 5 and smoke exhaust pipe 6 are arranged in the water tank 9, the heat that burner hearth 5 and smoke exhaust pipe 6 distribute is all absorbed by the water in the water tank 9, smoke exhaust pipe 6 is arranged in the position Spiral distribution of burner hearth 5, prolonged the travel distance of flue gas in smoke exhaust pipe 6, and then prolonged in the smoke exhaust pipe 6 heat exchanger time of water in the flue gas and water tank 9, so that the heat in the high-temperature flue gas is absorbed more fully, improved the heat utilization rate to high-temperature flue gas, because this structure adopts the mode of heating of water bag fire, smoke exhaust pipe 6 passes water tank 9 simultaneously, so do not exist the water pipe of existing boiler by the problem that incrustation scale blocks, reduced the fault rate of boiler.
In the boiler that provides in the present embodiment, the part pipeline section that is arranged in water tank 9 in the smoke exhaust pipe 6 is the major part that the water to water tank 9 heats, this pipeline section Spiral distribution is in water tank 9, above-mentioned pipeline section can be arranged in the water tank 9 with various spiral way, preferably, above-mentioned smoke exhaust pipe 6 is arranged in the position of water tank 9 around the outer wall Spiral distribution of burner hearth 5, and this kind Spiral distribution mode is so that this boiler structure is compacter.In order further to optimize such scheme, above-mentioned smoke exhaust pipe 6 is arranged on the outer wall of pipeline section of water tank 9 and is provided with heat exchanging fin or needle-like radiating piece, improved the contact area of the water in smoke exhaust pipe 6 and the water tank 9, improved heat exchanger effectiveness, and then so that the heat in the high-temperature flue gas in the smoke exhaust pipe 6 be absorbed as much as possible.
In the boiler that provides in the present embodiment, in the process of work, smoke exhaust pipe 6 is discharged from after by burner hearth 5, owing to have a large amount of flue dust in the high-temperature flue gas, in order to reduce flue dust in the flue gas to the impact of environment, above-mentioned smoke exhaust pipe 6 passes on the end of water tank 9 and is provided with disposal box 12, be provided with the screen pack (not shown) in this disposal box 12, flue gas is filtered in disposal box 12 by screen pack the time, has reduced the dust content in the flue gas of discharging.Above-mentioned disposal box 12 can be concentrated the dust in the disposal box 12 is processed when dust is collected certain degree.The outlet of above-mentioned disposal box 12 is provided with air exhauster 121.In order to improve the filter effect to the dust in the flue gas of discharging, can be provided with the multi-disc screen pack in the above-mentioned disposal box 12, screen pack is arranged in the smoke dust duct of disposal box 12 mutually, and preferred, above-mentioned multi-disc screen pack is arranged in parallel; Preferred, the many filter screens of above-mentioned multi-disc are parallel to each other, and interlaced top and the bottom that is arranged on disposal box 12.
In the boiler that provides in above-described embodiment, when the water in 6 pairs of water tanks 9 of smoke exhaust pipe heated, the casing of water tank 9 a part of heat that also can scatter and disappear was in order to reduce the casing heat radiation of water tank 9, be provided with heat-insulation layer on the outer wall of above-mentioned casing, adopt heat-insulation layer can reduce radiating efficiency.Above-mentioned boiler carries out water filling to water tank 9 respectively by the water inlet 91 on the casing that is arranged on water tank 9 and delivery port 92 and discharges water.
The boiler that provides in above-described embodiment is in the process of work, contain inevitably a large amount of unburnt gas (such as carbon monoxide etc.) in the high-temperature flue gas, these gases the burning process in not by completing combustion, the heat energy that has not only caused fuel combustion to produce is not fully utilized, also so that these do not cause fully the pollution of environment after the air scavenge of after-flame, in order to address the above problem, in the above-mentioned boiler, inwall at the top of burner hearth 5 is provided with wind complement port, its outer wall at this burner hearth 5 is provided with the benefit air compartment 51 that communicates with wind complement port, the air inlet of this benefit air compartment 51 is provided with secondary air channel 8, pass into air by secondary air channel 8 to mending in the air compartment 51, air enters into burner hearth 5 by wind complement port, mixes with high-temperature flue gas in the burner hearth 5, because the environment of high temperature, in the situation of air abundance, the gas of after-flame does not carry out second-time burning fully, so that the burning of fuel is more abundant, has reduced the pollution of flue gas to environment.In order further to optimize such scheme, it is that annular is mended air compartment 51 that above-mentioned burner hearth 5 is mended air compartment 51, and wind complement port is arranged on the inwall at top of burner hearth 5 equably, this kind structure is so that mending air compartment 51 when burner hearth 5 being carried out secondary benefit wind, can all directions on burner hearth 5 inwalls fill into air, improve the benefit wind effect to burner hearth 5.
In the above-mentioned boiler, combustion chamber 1 is the place that fuel burns, and above-mentioned combustion chamber 1 can be various types of combustion chambers 1, and the embodiment of the invention provides a kind of combustion chamber 1, and this combustion chamber 1 comprises that burning groove, deslagging roll cage 101 and the motor 10 of slagging tap, wherein:
Be provided with fire rod 11 on the bottom surface of burning groove, and be provided with air admission hole on the bottom surface of the feed end of burning groove, the deslagging that is provided with towards the combustion chamber direction rotation of 1 slag notch on the bottom surface of the slag output end of burning groove rolls cage 101, this deslagging rolls cage 101 and is tubular structure, is provided with air admission hole on its barrel;
The below of this burning groove is provided with air inlet interlayer 102, and this air inlet interlayer 102 communicates with the air admission hole that air admission hole and the deslagging of feed end roll on the cage 101;
The output of deslagging motor is connected with the rotating shaft that deslagging rolls cage 101, rolls cage 101 rotations at the driving lower dreg discharging of deslagging motor;
Above-mentioned combustion chamber 1 is in the process of work, fuel enters into burning groove by charging aperture, air inlet interlayer 102 passes into air, supports combustion in burning groove, in the process of the burning of fuel, thereby the ashes of burning are discharged in the rotation of rolling cage 101 by deslagging, above-mentioned burning groove can carry out deslagging at any time in the process of burning, the slagging scorification phenomenon that the ashes of having avoided producing after the fuel combustion cause because of accumulation.
Fuel sufficient combustion when guaranteeing that deslagging in the combustion chamber 1 rolls cage 101 deslagging, above-mentioned deslagging motor is the intermittently used motor, controls by the electric-controlled box 13 that is arranged on the boiler.
In the boiler that provides in above-described embodiment, fuel supply system transfer the fuel in the combustion chamber 1, concrete fuel supply system can have multiple, carry out in every way charging, the embodiment of the invention provides a kind of feedway of fuel, comprises hopper 3, follower arm 21 and charging motor 4, wherein:
The bottom of hopper 3 is provided with the feed pipe 2 that communicates with its drain hole, and follower arm 21 is arranged in this feed pipe 2, is provided with flight on the follower arm 21;
The output of charging motor 4 links to each other with follower arm 21.
This fuel supply system is when work, and 21 rotations of charging motor 4 drive follower arms are provided with flight and under the effect of flight the fuel in the hopper 3 are transported in the combustion chamber 1 by feed pipe 2 on the follower arm 21, thereby has realized the automation of charging.
In the fuel supply system that provides in the present embodiment, in order to guarantee that fuel has the sufficient time and burns after entering into combustion chamber 1, so that fuel combustion is complete, above-mentioned charging motor 4 can be the intermittently used motor, and this motor can be controlled by the electric-controlled box 13 that is arranged on the boiler.
Above-mentioned hopper 3 is parts of depositing fuel, for more easily blanking, above-mentioned hopper 3 is broach hopper, feed pipe 2 is arranged on the less bottom of hopper 3 cross-sectional areas, this kind structure is in the process that fuel is carried, follow-up fuel is slipped to the drain hole of hopper 3 bottoms voluntarily, and carries out the conveying of fuel under the drive of follower arm 21.
In the boiler that provides in the embodiment of the invention, also be provided with ash bucket 7 below the discharging opening of combustion chamber 1, fuel enters into ash bucket 7 at the ashes that burning produces afterwards by slag notch, thereby realizes the collection to ashes.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can in the situation that does not break away from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. a boiler is characterized in that, comprising:
Water tank is provided with burner hearth in this water tank;
One end links to each other with the exhanst gas outlet of described burner hearth, and the other end passes the smoke exhaust pipe of described burner hearth, and this smoke exhaust pipe is arranged in the position Spiral distribution of burner hearth;
Be arranged on the bottom of described burner hearth, and the combustion chamber that communicates with described burner hearth, described combustion chamber comprises burning groove, air inlet interlayer and the motor of slagging tap, be provided with fire rod on the bottom surface of described burning groove, and be provided with air admission hole on the bottom surface of the feed end of described burning groove, be provided with on the bottom surface of the slag output end of described burning groove towards the deslagging of the direction rotation of the slag notch of described combustion chamber and roll cage, it is tubular structure that this deslagging rolls cage, is provided with air admission hole on its barrel; Described air inlet interlayer is arranged on described burning groove below, and communicates with air admission hole that air admission hole and the deslagging of described feed end roll on the cage; The output of the described motor of slagging tap is connected with the rotating shaft that described deslagging rolls cage;
The fuel supply system that is connected with the charging aperture of described combustion chamber.
2. boiler according to claim 1 is characterized in that, described smoke exhaust pipe is arranged on the outer wall at position of described water tank and is provided with heat exchanging fin.
3. boiler according to claim 2 is characterized in that, described smoke exhaust pipe passes on the end of described water tank and is provided with disposal box, is provided with the multi-disc screen pack in this disposal box.
4. boiler according to claim 3 is characterized in that, is provided with heat-insulation layer on the outer wall of described water tank.
5. boiler according to claim 1 is characterized in that, is provided with wind complement port on the inwall at the top of described burner hearth, and is provided with the benefit air compartment that communicates with described wind complement port on the outer wall at the top of described burner hearth, and the air inlet of described benefit air compartment is provided with secondary air channel.
6. boiler according to claim 5 is characterized in that, described benefit air compartment is that annular is mended air compartment, and wind complement port is arranged on the inwall of described roof of the furnace equably.
7. boiler according to claim 1 is characterized in that, described fuel supply system comprises:
Hopper, its bottom is provided with the feed pipe with the feeding inlet of described combustion chamber;
Be arranged on the follower arm in the described feed pipe, be provided with flight on this follower arm;
The charging motor that output is connected with described follower arm.
8. boiler according to claim 7 is characterized in that, described hopper is broach hopper, and described feed pipe is arranged on the less bottom of described hopper cross-sectional area.
9. boiler according to claim 1 is characterized in that, also comprises the ash bucket of the slag notch below that is arranged on described combustion chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010609609 CN102121747B (en) | 2010-12-28 | 2010-12-28 | Boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010609609 CN102121747B (en) | 2010-12-28 | 2010-12-28 | Boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102121747A CN102121747A (en) | 2011-07-13 |
| CN102121747B true CN102121747B (en) | 2013-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010609609 Expired - Fee Related CN102121747B (en) | 2010-12-28 | 2010-12-28 | Boiler |
Country Status (1)
| Country | Link |
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| CN (1) | CN102121747B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2823428A1 (en) * | 2010-12-28 | 2012-07-05 | Hongfeng Zhu | A boiler |
| CN104053952A (en) * | 2011-10-11 | 2014-09-17 | 朱宏锋 | Stove with closed heat exchange area |
| WO2013127065A1 (en) * | 2012-02-28 | 2013-09-06 | Zhu Hongfeng | Stove |
| CA2865955A1 (en) * | 2012-02-28 | 2013-09-06 | Hongfeng Zhu | An oven without dust rise |
| WO2013159267A1 (en) * | 2012-04-23 | 2013-10-31 | Zhu Hongfeng | Biomass fuel stove |
| CN107686868B (en) * | 2017-07-31 | 2019-07-05 | 山西建邦集团铸造有限公司 | A kind of ironmaking equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2244136Y (en) * | 1995-05-11 | 1997-01-01 | 刘铭 | Fully sealed firebreak wall for coal burning boiler |
| CN2685721Y (en) * | 2004-01-08 | 2005-03-16 | 杭州江南锅炉厂 | Boiler air makeup apparatus |
| CN2837733Y (en) * | 2005-09-19 | 2006-11-15 | 肖学正 | Vertical boiler |
| CN201180989Y (en) * | 2008-01-29 | 2009-01-14 | 许晓广 | Novel stove hearth |
| CN101514812A (en) * | 2009-03-23 | 2009-08-26 | 孔繁利 | Biomass burner |
| CN201903160U (en) * | 2010-12-28 | 2011-07-20 | 朱宏锋 | Boiler |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5523855A (en) * | 1978-08-08 | 1980-02-20 | Takuma Plant Kk | Incinerator |
-
2010
- 2010-12-28 CN CN 201010609609 patent/CN102121747B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2244136Y (en) * | 1995-05-11 | 1997-01-01 | 刘铭 | Fully sealed firebreak wall for coal burning boiler |
| CN2685721Y (en) * | 2004-01-08 | 2005-03-16 | 杭州江南锅炉厂 | Boiler air makeup apparatus |
| CN2837733Y (en) * | 2005-09-19 | 2006-11-15 | 肖学正 | Vertical boiler |
| CN201180989Y (en) * | 2008-01-29 | 2009-01-14 | 许晓广 | Novel stove hearth |
| CN101514812A (en) * | 2009-03-23 | 2009-08-26 | 孔繁利 | Biomass burner |
| CN201903160U (en) * | 2010-12-28 | 2011-07-20 | 朱宏锋 | Boiler |
Non-Patent Citations (1)
| Title |
|---|
| JP昭55-23855A 1980.02.20 |
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| CN102121747A (en) | 2011-07-13 |
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