Anti-Scorification Oven

Abstract

An anti-scorification oven has a combustion chamber having an ignition bar. A first feed rotor is provided in the combustion chamber and having one spiral sector at each end and a plurality of scorification nails in a middle thereof. A first motor is connected to the first feed rotor. A hopper is in communication with the feed inlet of the combustion chamber. A second feed rotor has a spiral sector thereon. A second motor has an output connected to the second feed rotor. A hearth is above and in communication with the combustion chamber.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] Not Applicable

STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT

[0002] Not Applicable

INCORPORATION-BY-REFERENCE OF MATERIAL SUBMITTED ON A COMPACT DISC

[0003] Not Applicable

BACKGROUND OF THE INVENTION

[0004] 1. Field of the Invention

[0005] The invention relates to oven manufacturing, and more particularly, to an anti-scorification oven.

[0006] 2. Description of Related Art

[0007] Oven is commonly used everyday furniture. A burning chamber is a core part of an oven and a place where combustion occurs. A normal work of an oven comes from fuel burning in the burning chamber.

[0008] In a process of burning of all conventional ovens, fuel burns in the burning chamber. Since a high temperature in the burning chamber, ashes left by the burning will scorifate in the burning chamber. After a long time, the scorificated ash will jam inflation holes defined in the burning chamber. And the process of combustion will be affected. Therefore, conventional oven requires high standard fuels, which often are original wooden cores. Because original -wooden cores contains less ash and will not left a lot of ash after burning. A scorification in combustion will be decreased. However, the production of original wooden cores needs a lot of wood which will cause destroy to circumstances. And a cost of original wood is always high, which thus enhances a cost to use the oven. There are a lot of biomass fuels in our daily life such as straw, sawdust, and crop stalks. However such fuels often contain a lot ash and are liable to scorificated in combustion. At the same time, a huge amount of biomass fuels are burn in wane every year, which not only cause waste but also circumstance pollution.

[0009] Therefore, to provide an oven which is able to prevent scorification in combustion becomes a direction of search and development.

BRIEF SUMMARY OF THE INVENTION

[0010] The main object of the invention is to provide an ante-scorification oven which is able to prevent ash to scorificated after combustion.

[0011] In order to accomplish the above objects, the present invention provides an anti-scarification oven having a combustion chamber having an ignition bar. A first feed rotor is provided in the combustion chamber and having one spiral sector at each end and a plurality of scorification nails in a middle thereof. One end of the first feed rotor passes through a feed inlet of the combustion chamber and the other end thereof passing through an ash outlet of the combustion chamber. A first motor has an output connected to the first feed rotor. A hopper has a feed pipe at a bottom thereof and in communication with the feed inlet of the combustion chamber. A second feed rotor is in the feed pipe and has a spiral sector thereon. An end of the second feed rotor at the feed inlet is higher than an end of the first feed rotor at the feed inlet. A second motor has an output connected to the second feed rotor. A hearth is above and in communication with the combustion chamber.

[0012] Preferably, the anti-scorification nails are staggerly distributed in the middle of the first feed rotor.

[0013] Preferably, the anti-scorification nails are in perpendicular with respect to an axil of the first feed rotor.

[0014] Preferably, the ignition bar is disposed under a bottom of the combustion chamber near the feed inlet thereof.

[0015] Preferably, a tank wall is provided surrounding the hearth, which with an outer surface of the hearth, defines a boiling water tank.

[0016] Preferably, the hearth is conical and an end having a smaller cross-sectional area is connected to a top plate of the anti-scorification oven.

[0017] Preferably, a chimney is provided in communicate with the hearth and spirally passing across the boiling water tank.

[0018] Preferably, a plurality of air supply holes are defined in the hearth and an air supply chamber is formed on an outside surface of the hearth surrounding the air supply holes.

[0019] Preferably, an exhaust blower is provided at an exit of the chimney, a dust collection box is provided between the chimney and the exhaust blower, and a plurality of layers of dust collection nets are placed in the dust collection box.

[0020] Preferably, the hopper is of cone shape and the second feed rotor is disposed under the hopper.

[0021] These and other objectives, features, and advantages of the present invention will become apparent from the following detailed description, the accompanying drawings, and the appended claims.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

[0022] FIG. 1 is a schematic plane view of the preferred embodiment of the invention.

DETAILED DESCRIPTION OF THE INVENTION

[0023] An anti-scorification oven is provided in order to prevent scorification after combustion.

[0024] The preferred embodiment of the oven of the invention has an ignition bar 2, a combustion chamber 1, a first feed rotor 6, a first motor 11 a hopper 5, a second feed rotor 3, a second motor 4, and a hearth 7.

[0025] The ignition bar 2 is provided in the combustion chamber 1 and for igniting fuels entered in the combustion chamber 1. The first feed rotor 6 is provided in the combustion chamber 1 and has one spiral sector at each end thereof. A plurality of scorification breaking nails 16 are formed in a middle of the first feed rotor 6. The first feed rotor 6 has one end passing through a feed inlet of the combustion chamber 1 and the other end passing through an ash outlet of the combustion chamber 1. The first motor 11 has an output connected to the first feed rotor 6. The first feed rotor 6 rotates under a driving force from the first motor 11. Under a driving force from the spiral sectors, the fuels enter the combustion chamber 1 from the feed inlet. The hopper 5 has a feed pipe 15 at a bottom thereof and in communication with the feed inlet of the combustion chamber 1. The second feed rotor 3 is provided in the feed pipe 15. A spiral sector is provided on the second feed rotor 3. The end of the second feed rotor 3 at the feed inlet is higher than the end of the first feed rotor 6 at the feed inlet.

[0026] An output of the second rotor 4 is connected to one end of the second feed rotor 3 and for driving the second feed rotor 3 to rotate. Fuel is thus conveyed into the inlet of the combustion chamber 1 from the hopper 5.

[0027] The hearth 7 is above and in communication with the combustion chamber 1. High temperature gas and flame from the combustion in the combustion chamber 1 enter the hearth 7 and then exit the hearth 7 through a top thereof, from which an object 18 on a top plate 17 of the hearth 7 will be heated.

[0028] The inlet of the combustion chamber 1 is in communication with a branch 14 of the oven. The branch 14 is for supplying air to the combustion chamber 1 to support the burning of the fuel in the combustion chamber 1.

[0029] A process of working of the anti-scorification oven of the invention is as follows.

[0030] Driven by the second motor 4, the second feed rotor 3 conveys the fuel in the hopper 5 to the inlet of the combustion chamber 1 via the feed pipe 15. The first motor 11 drives the first feed rotor 6 to send the fuel on the inlet of the combustion chamber 1 to the combustion chamber 1. Air is supplied through the branch 14. The fuel burns in the combustion chamber 1 and the high temperature gas and flame produced will heat the object 18 placed on the top plate 17 through the hearth 7. In the process of burning, ash produced thereby will be pushed by the fuel newly entering the combustion chamber 1 to move towards the ash exit. The ash will be pushed to leave the ash exit by the first feed rotor 6. And in this process, the scorification breaking nails 16 rotate with the first feed rotor 6 and stir the ash in the combustion. The ash is stirred up and pulpified, and scorification of the ash is then prevented.

[0031] In the process of working of the oven of the invention, on one hand ash is stirred up in the process of combustion to prevent scorification in a circumstance of high temperature, and the ash is pulpified by the anti-scorification nails 16 to ensure a complete combustion of the incomplete combustion ash. And on the other hand, the ash is pushed to move by newly entering fuel and exit the outlet by the push of the first feed rotor 6. The scorification caused by long time accumulation of ash in the combustion chamber 1 is then avoided. For the preferred embodiment, a phenomenon of scorification in the process of combustion is prevented and a lot a biomass fuel such as straw, sawdust, bark, and crop stalks will be able to be used as fuel.

[0032] In the preferred embodiment of the anti-scorification oven, the inlet of the second feed rotor 3 near the combustion chamber 1 is higher than the end of the first feed rotor 6 near the inlet. There are many kinds of relationship between the positions of the first and the second feed rotors 6, 3. Preferably, the first feed rotor 6 is parallel to the second feed rotor 3, and the second feed rotor 3 is higher than the first feed rotor 6.

[0033] In this preferred embodiment, the anti-scorification nails 16 are provided in the middle portion of the first feed rotor 6, i.e., in the middle of the combustion chamber 1. Points of all anti-scorification nails 16 are facing outward with respect to the first feed rotor 6. As the first feed rotor 6 rotates, the anti-scorification nails 16 stir up and pulpify the ash in the combustion chamber 1 to prevent scorification. As a preferred resolution, all the anti scorification nails 16 are in perpendicular with respect to an axil of the first feed rotor 6. And as a more preferred resolution, the anti-scorification nails 16 are staggerly distributed in the middle of the first feed rotor 6.

[0034] In the process of working, the anti-scorification oven of the invention keeps discharging ash to the exit of the combustion chamber 1. In order to conveniently collect ash, an ash tray 9 is provided under the exit of the combustion chamber 1.

[0035] As a preferred resolution, the ignition bar 2 is disposed under a bottom of the combustion chamber 1 near the feed inlet thereof. In this dispose, the fuel is able to be ignited as soon as it enters the combustion chamber 1.

[0036] In this preferred embodiment, the hearth 7 is conical and an end having a smaller cross-sectional area is an upper side. The upper side of the hearth 7 is connected to the top plate 17 of the hearth 7. The conical shape of the hearth is able to make the flame more concentrated, and a heating efficiency to the object 18 on the top plate 17 is increased. As a more preferred resolution, a plurality of air supply holes 72 are defined in a wall of the hearth 7. An air supply chamber 71 is formed on an outside surface of the hearth 7 surrounding the air supply holes 72. An air supply pipe (not shown) is provided connecting an inlet of the air supply holes 72 and the branch 14. Air is supplied into the air supply chamber 71 via the air supply pipe, and then enters the hearth 7 through the air supply holes 72. The supply of air to the hearth 7, on one hand, is able to make the incompletely burned gas (such as carbon monoxide) to combust completely to increase combustion efficiency. On the other hand, less incompletely burned gas will be discharged into atmosphere. The dispose of the air supply holes 72 is able to further focus the flame in the hearth 7. A temperature of the flame is thus enhanced and the heating efficiency to the object 18 on the top plate 17 is able to be further increased.

[0037] As a preferred resolution, the air supply chamber 71 is circular and surrounding a top portion of the hearth 7. The air supply holes 72 are disposed on the top of the hearth 7. Air is supplied into the hearth 7 from a variety of directions. The air supply is able to become more replenish and the efficiency may be increased.

[0038] In this preferred embodiment of the anti-scorification oven, a tank wall 10 is provided surrounding the hearth 7. A boiling water tank 101 is defined by the tank wall 10 and an outer surface of the hearth 7. Water is able to be poured into the boiling water tank 101 to absorb heat from the hearth 7. The use ratio of heat of the oven is increased. As a more preferred resolution, the air supply pipe goes through the boiling water tank 101. The boiling water tank 101 is able to pre-heat the air supply pipe. When a temperature of the supplying air in the air supply pipe becomes higher, the combustion in the hearth 7 is able to be much more improved.

[0039] The afore-mentioned boiling water tank 101 is able to absorb and re-use the heat giving out from the outer surface of the hearth 7. The heated water is ready for daily use, such as bathing, and room heating.

[0040] In the above embodiment, only the heat sent out from the outer surface of the hearth 7 is re-used. In the working process of the oven, smoke leaving a smoke exit in the top plate 17 still has a high temperature after passing the object 18. Such emission of smoke still causes waste of a lot un-used heat. So, a chimney 8 is provided in communication with the smoke exit and passing across the boiling water tank 101. The smoke exchanges heat with the water in the boiling water tank 101 via the chimney 8 and the heat therein will be able to be re-used. There are different ways of deployment for the chimney 8 to pass across the boiling water tank 101. In order to increase heat exchanging area, the chimney 8 goes spirally across the boiling water tank 101 around the hearth 7. As a more preferred resolution, a plurality of heat emission fins (not shown) are formed on the chimney 8, which will further increase the heating exchanging area.

[0041] In this preferred embodiment, an exhaust blower 12 is provided at an exit of the chimney 8. A dust collection box 13 may be provided between the chimney 8 and the exhaust blower 12. A plurality of layers of dust collection nets (not shown) are placed in the dust collection box 13. There are lot of dust in the smoke going out from the chimney 8. The dust must be collected by the dust collection nets in the dust collection box 13 before entering the exhaust blower 12. The dust collection box 13 is able to be processed termly to remove the dust being collected. The disposition of the dust collection box 13 is able to diminish pollution to the atmosphere from the smoke exiting from the chimney 8.

[0042] In this embodiment, the hopper 5 is for containing the fuel and may be of any shape. Preferably, the hopper 5 is of cone shape. In a process of fuel feeding, fuel is able to automatically fall to the exit of the hopper 5 under gravity and then be driven by the second feed rotor 3.

[0043] From above description, it is seen that the objects of the present invention have been fully and effectively accomplished. Embodiment of the invention has been shown and described for the purposes of illustrating the functional and structural principles of the present invention and is subject to change without departure from the invention's principles. Therefore, this invention includes all modifications encompassed within the spirit and scope of the following claims.

Claims

1. An anti-scorification oven comprising: a combustion chamber having an ignition bar, a first feed, rotor being provided in said combustion chamber and having one spiral sector at each end and a plurality of scorification nails in a middle thereof, one end of said first feed rotor passing through a feed inlet of said combustion chamber and the other end thereof passing through an ash outlet of said combustion chamber, a first, motor having an output connected to said first feed rotor, a hopper having a feed pipe at a bottom thereof and in communication with said feed inlet of said combustion chamber, a second feed rotor being in said feed pipe and having a spiral sector thereon, an end of said second feed rotor at said feed inlet being higher than an end of said first feed rotor at said feed inlet, a second motor having an output connected to said second feed rotor, and, a hearth being above and in communication with said combustion chamber.

2. The anti-scorification oven as claimed in claim 1, wherein said anti-scorification nails are staggerly distributed in said middle of said first feed rotor.

3. The anti-scorification oven as claimed in claim 2, wherein said anti-scorification nails are in perpendicular with respect to an axil of said first feed rotor.

4. The anti-scorification oven as claimed in claim 1, wherein said ignition bar is disposed under a bottom of said combustion chamber near said feed inlet thereof.

5. The anti-scorification oven as claimed in claim 1, wherein a tank wall is provided surrounding said hearth, which with an outer surface of said hearth, defines a boiling water tank.

6. The anti-scorification oven as claimed in claim 5, wherein said hearth is conical and an end having a smaller cross-sectional area is connected to a top plate of said anti-scorification oven.

7. The anti-scorification oven as claimed in claim 6, wherein a chimney is provided in communicate with the hearth and spirally passing across said boiling water tank.

8. The anti-scorification oven as claimed in claim 6, wherein a plurality of air supply holes are defined in said hearth and an air supply chamber is formed on an outside surface of the hearth surrounding said air supply holes.

9. The anti-scorification oven as claimed in claim 8, wherein an exhaust blower is provided at an exit of said chimney, a dust collection box is provided between said chimney and said exhaust blower, and a plurality of layers of dust collection nets are placed in said dust collection box.

10. The anti-scorification oven as claimed in claim 1, wherein said hopper is of cone shape and said second feed rotor is disposed under said hopper.