WO2013127064A1

WO2013127064A1 - Biomass fuel stove and burner thereof

Info

Publication number: WO2013127064A1
Application number: PCT/CN2012/071745
Authority: WO
Inventors: 朱宏锋; 陈前喜
Original assignee: Zhu Hongfeng; Chen Qianxi
Priority date: 2012-02-28
Filing date: 2012-02-28
Publication date: 2013-09-06
Also published as: CA2865671A1; CN104067053A

Abstract

A biomass fuel stove comprises a main body (1) located on the ground and comprises a combustion box (10) and an auxiliary equipment box (20). A burner (30) comprising an inner tilted plate (31), an outer tilted plate (32) and two side plates (33) is accommodated in the combustion box (10). A fuel delivery mechanism (40) and electric installations (50) are accommodated in the auxiliary equipment box (20). The inner tilted plate (31) is connected with the outer tilted plate (32) at an angle (a) between 60 to 90 degrees. The fuel delivery mechanism (40) comprises a feeding cylinder (42) penetrating through the inner tilted plate (31). Several ventilation holes (35) are provided on the inner tilted plate (31) and the outer tilted plate (32). The stove with the burner (30) can obtain higher temperature and is not easy to backfire, thereby improving thermal utilization efficiency.

Description

[Name of invention established by ISA in accordance with Rule 37.2] Biomass fuel stove and its burner

Technical field

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to the field of biomass fuel energy utilization equipment, and more particularly to a burner capable of improving the combustion performance of a biofuel stove.

Background technique

Energy utilization technologies for biomass fuels such as straw, wood chips, and crop straw are a new type of energy solution, and their equipment is gradually being improved and refined. The most critical component in biomass fuel utilization equipment is the burner, which is related to important properties such as energy efficiency, safety, soot, ash, and fuel slagging.

The inventor of the invention filed in China 201110257871.8 A burner for a stove using biomass fuel is disclosed in 'A High Performance Burner'. The combustion chamber A first combustion zone is provided in communication with one end of the feed tube, a second combustion zone immediately adjacent the first combustion zone, and a third combustion zone immediately adjacent the second combustion zone. The first combustion zone includes a substantially horizontal first bottom plate, two inclined first side plates, a first front plate extending upward from the first bottom plate, and a first upper opening opposite the first bottom plate. The discharge port passes through the first front plate such that the feed tube is in communication with the first combustion zone. The distance between the two first side plates is substantially the same as the width of the discharge opening at the discharge opening, and gradually increases in width from the first combustion zone to the second combustion zone. The second combustion zone includes a second bottom plate extending obliquely downward along the first bottom plate and a second upper opening opposite the second bottom plate. The angle at which the second bottom plate is inclined downward relative to the first bottom plate may be 8 ° -30 °. The third combustion zone includes a third bottom plate, a front riser extending upward from the third bottom plate to the second bottom plate, a rear riser extending downward from the third bottom plate to the bottom surface, and a third opposite the third bottom plate Three openings above.

There is still room for improvement in the performance of such a combustion chamber during actual use. First, although the first combustion zone above the first bottom plate is the main combustion zone, the fuel burned when the fuel newly introduced from the feed pipe to the first bottom plate is pushed from the first bottom plate and falls onto the second bottom plate. It has not burned out and still has a lot of energy, even if it falls into the third burning zone, it is still not completely burned out. The energy of the three combustion zones enters the energy exchange zone from the three upper openings respectively, so that the area of the energy exchange zone is too large, which is not conducive to the concentrated use of energy and waste. Second, the first bottom plate of the main combustion zone is basically a horizontal plane, and the fuel burned is horizontally distributed, and is easily dropped into the second combustion zone, and it is difficult to accumulate a certain fuel thickness. Practice has shown that a relatively thin fuel thickness is not easy to form a higher combustion temperature. Third, since the cumulative thickness of the fuel is relatively thin, it is difficult to accumulate unburned fuel where the feed pipe is in communication with the first combustion zone. In actual operation, it is found that the fuel will basically fall from here to the first bottom plate and then start to burn, which will form a high combustion temperature in the place where the feed pipe communicates with the first combustion zone, so that it is very easy to ignite. The fuel in the feed pipe causes tempering.

technical problem

One technical problem to be solved by the present invention is to provide a novel burner having a concentrated heat exchange zone, concentrated use of energy, and high heat utilization.

Another technical problem to be solved by the present invention is to provide a novel burner that can accumulate thicker fuel thicknesses and thus have a higher combustion temperature.

Another technical problem to be solved by the present invention is to provide a novel burner which can accumulate unburned fuel where the feed cylinder communicates with the burner, thereby reducing the temperature here and reducing the possibility of tempering. .

Technical solution

In order to solve the above technical problems, the present invention provides a A biomass fuel stove using a new burner, the stove includes a body that can be placed on the ground, the body including a combustion chamber and an auxiliary equipment box. The combustion chamber contains a burner, and the auxiliary equipment box houses a fuel delivery mechanism and electrical equipment. The fuel delivery mechanism includes a hopper, a delivery cylinder, and a screw feed rod housed within the delivery cylinder. Electrical equipment includes A power supply and a feeding motor for driving the screw feed rod, the feeding cylinder is a cylindrical cylindrical body, and comprises a feeding end and a discharging end arranged in the auxiliary equipment box, the burner comprises an inner slanting plate, the inner side The swash plate includes a first bottom edge, a first top edge, and two first side edges, and the discharge end of the feed cylinder passes between the first bottom edge and the first top edge through the inner swash plate. The burner further includes an outer sloping plate including a second bottom edge, a second top edge, and two second side edges, a first bottom edge of the inner slant plate and a second bottom edge of the outer slant plate Connected and between the outer sloping plate and the inner swash plate An angle of 60 degrees to 90 degrees a . The burner further includes two side plates respectively connected to the first side and the second side of the inner slanting plate and the outer slanting plate, and a plurality of venting holes are formed in the inner slanting plate and the outer slanting plate.

Beneficial effect

The beneficial effects brought by the invention include, firstly, the fuel is burned in the combustion zone, and the combustion zone is relatively concentrated compared with the conventional technology, facilitating the concentrated use of heat and improving the utilization rate of the heat energy. The second phase can accumulate a certain thickness compared to a conventional burner, so that a higher temperature can be achieved. Third, since the fuel is mainly burned in the upper part of the burner, and the heat is radiated upward, the temperature at the discharge end of the feed cylinder is low, and tempering is not easily formed.

DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of a preferred embodiment of the present invention.

Figure 2 is a cross-sectional view of the embodiment of Figure 1.

Figure 3 is a circuit diagram of the electrical device of the embodiment shown in Figure 1. as well as,

4 is a perspective view of a burner of a preferred embodiment of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

Referring to Figures 1, 2, 3 and 4, there is shown a novel burner 30 of the present invention. A preferred embodiment of a stove using such a burner. The stove includes a body 1 that can be placed on the ground, and the body 1 includes a combustion chamber 10 and an auxiliary equipment box 20.

The combustion chamber 10 contains the burner 30; the auxiliary equipment box 20 contains the fuel delivery mechanism 40 and electrical equipment 50 . The fuel delivery mechanism 40 includes a hopper 41, a feed cylinder 42, and a screw feed rod 43 housed within the feed cylinder 42. Electrical equipment 50 includes a drive screw feed bar 43 Rotating feed motor 51. The feed cylinder 42 is a cylindrical cylindrical body including a feed end 421 housed in the auxiliary equipment tank 20 and a discharge end 422 located at the upper portion of the burner. . The screw feed rod 43 is housed within the feed cylinder 42.

The feed end 421 of the feed cylinder 42 has an opening, and the opening communicates with the bottom of the hopper 41, the hopper 41 The biomass fuel particles 60 therein can enter the feed cylinder 42 by gravity from the opening. The screw feed vane 432 of the screw feed rod 43 is driven to rotate by the feed motor 52 to push into the feed cylinder The biomass fuel particles 60 of 42 move toward the discharge end 422, and the fuel particles 60 pass through the discharge end 422 and fall into the burner 30 by gravity to realize the fuel 60 from the hopper 41. Supply to the burner 30.

The burner 30 includes an inner sloping plate 31 including a first bottom edge 311 and a first top edge 312, and two first side edges 313, the discharge end 422 of the feed cylinder 42 passes between the first bottom edge 311 and the first top edge 312 through the inner sloping plate 31. Burner 30 Also included is an outer sloping plate 32 comprising a second bottom edge 321 , a second top edge 322 , and two second side edges 323 , the first bottom edge 311 of the inner sloping plate 31 It is connected to the second bottom edge 321 of the outer sloping plate 32, and the angle between the outer swash plate 32 and the inner swash plate 31 is 60 degrees to 90 degrees, preferably 70 degrees. Burner 30 Also included are two side panels 33 that are coupled to the first side 313 and the second side 323 of the inner sloping panel 31 and the outer sloping panel 32, respectively. Inner swash plate 31 , outer slant plate 32 and two side plates 33 Enclose a burning zone 34 . A plurality of ventilation holes 35 are formed in the inner swash plate 31 and the outer swash plate 32. On the inner swash plate 31, the discharge end 422 of the feed cylinder 42 The upper portion may also be formed with a fuel pressure plate 36 which further prevents the burning fuel 60 from entering the discharge end 422 of the delivery cylinder 42 to form a temper.

The circuit diagram of the electrical equipment 50 is shown in Figure 3, including the feed motor 51 that drives the screw feed rod 43 and one that can be directed to the burner. 30 blower 52, power supply 53, a power switch 54 and power indicator 55. The power supply 53 can be either an AC/DC power supply 531 or an AC/DC power supply. The upper parallel battery 532 is used as an auxiliary power source. Both AC and DC power supplies 531 and battery 532 can be powered separately. Power switch 54 Mounted in the auxiliary equipment box 20 Above, the power supply of the entire circuit can be controlled, and the switch indicator light 55 is also installed near the power switch 54 above the auxiliary equipment box 20 to indicate the opening and closing state of the power switch 54. In the combustion box 10 A wind deflector 11 is provided to form a closed air supply space 12 at the lower portion of the burner 30. The blower 52 sends air through the air supply space 12 to the burner 30 and through the vent 35 Entering the combustion zone 34 for combustion of the fuel in the burner zone 34.

Fuel 60 is a biomass fuel and is a small particle that is crushed and pressed from straw, wood chips, and crop straw. Fuel 60 enters the burner After 30, it can be ignited and burned in the combustion zone 34. The upper part of the combustion zone 34 is the heat exchange zone 13 and the burned ash can fall into the combustion chamber via the second top edge 322 of the outer sloping plate 32. Lower ash collection area 14 .

Claims

A biomass fuel stove using a new burner, the stove comprising a body (1) mountable on the ground, the body (1) comprising a combustion chamber ( 10) and an auxiliary equipment box (20), the combustion box (10) houses a burner (30), and the auxiliary equipment box (20) contains a fuel delivery mechanism (40) And the electrical equipment (50), the fuel delivery mechanism (40) includes a hopper (41), a delivery cylinder (42), and a housing (42) The screw feed rod (43) inside, the electrical equipment (50) comprises a power source (53) and a feeding motor (52) for driving the screw feed rod (43), the feeding cylinder (42) Is a cylindrical cylindrical body comprising a feed end (421) and a discharge end (422) housed in the auxiliary equipment box (20), characterized in that the burner (30) ) includes:

An inner sloping plate (31), the inner sloping plate (31) includes a first bottom edge (311) and a first top edge (312) And two first side edges (313), the discharge end (422) of the feeding cylinder (42) passes between the first bottom edge (311) and the first top edge (312) through the inner inclined plate ( 31 ) ;

An outer sloping plate (32), the outer sloping plate (32) includes a second bottom edge (321) and a second top edge (322) And two second sides (323), a first bottom edge (311) of the inner sloping plate (31) and a second bottom edge (321) of the outer sloping plate (32) Connected and set an angle of 60 degrees to 90 degrees between the outer swash plate (32) and the inner swash plate (31);

Two first sides (313) and a second side (323) of the inner swash plate (31) and the outer slant plate (32), respectively The connected side plates (33) are provided with a plurality of ventilation holes (35) on the inner inclined plate (31) and the outer inclined plate (32).

2. A biomass fuel stove using a novel burner according to claim 1 wherein the electrical equipment (50) further comprises a burner ( 30) Air blower ( 52 ), a power switch ( 54 ) and a power indicator light ( 55 ).

3. The biomass fuel stove using the novel burner according to claim 1, wherein the outer swash plate (32) and the inner swash plate (31) The angle between the angle a is 70 degrees.

4. The biomass fuel stove using the novel burner according to claim 2, wherein the outer sloping plate (32) and the inner slanting plate (31) The angle between the angle a is 70 degrees.

5. A novel burner characterized by comprising:

An inner sloping plate (31), the inner sloping plate (31) includes a first bottom edge (311) and a first top edge (312) And two first side edges (313), the discharge end (422) of the feeding cylinder (42) passes between the first bottom edge (311) and the first top edge (312) through the inner inclined plate ( 31 ) ;

An outer sloping plate (32), the outer sloping plate (32) includes a second bottom edge (321) and a second top edge (322) And two second sides (323), a first bottom edge (311) of the inner sloping plate (31) and a second bottom edge (321) of the outer sloping plate (32) Connected and set an angle of 60 degrees to 90 degrees between the outer swash plate (32) and the inner swash plate (31);

Two first sides (313) and a second side (323) of the inner swash plate (31) and the outer slant plate (32), respectively Connected side plates (33), inside sloping plates (31) and outside sloping plates

(32) There are several ventilation holes (35).