WO2006049427A1

WO2006049427A1 - A stove equipped with control means

Info

Publication number: WO2006049427A1
Application number: PCT/KR2005/003672
Authority: WO
Inventors: Sang-Kyu Kang
Original assignee: Sang-Kyu Kang
Priority date: 2004-11-03
Filing date: 2005-11-03
Publication date: 2006-05-11
Also published as: KR200374930Y1; CN101052841A

Abstract

Disclosed herein is a stove having a control means so as to supply a prescribed amount of coal. The stove is capable of precisely supplying a prescribed amount of coal to a furnace, and supplying an amount of coal, corresponding to the amount of coal which has been burned and discharged to the outside, to the furnace. The stove according to this invention includes a furnace, a fuel supply pipe to supply coal to the furnace, and a storage tank to store the coal to be input into the fuel supply pipe. Further, the stove includes a control means having an on-off member, and a rotating member contacting an end of the on-off member. A press member is provided on the outer circumference of the rotating member.

Description

Description A STOVE EQUIPPED WITH CONTROL MEANS

Technical Field

[1] The present invention relates to a stove, which continuously supplies a prescribed amount of coal(herein, the term "coal" mainly means brown coal) to a furnace, auto¬ matically recovers coal after the coal supplied to the furnace has been automatically burned, and appropriately inputs coal or brown coal again, depending on the quantity of heat generated or the amount of coal burned in the furnace. Background Art

[2] Devices for supplying coal or brown coal to a stove and burning the supplied coal or brown coal are disclosed in Korean U.M. Registration No. 329245, which is entitled "Brown Coal Stove" (2003. 09. 26), Korean U.M. Laid-Open Publication No. 1987-0000958, which is entitled "Heating Device for Solid Fuel" (1987. 02. 20), Korean U.M. Registration No. 0355095, which is entitled "System for Automatically Supplying Coal to Furnace" (2004. 06. 24), Korean Patent Laid-Open Publication No. 10-2002-0082303, which is entitled "Coal Boiler" (2002. 12. 31), etc.

[3] In the "Brown Coal Stove", disclosed in U.M. Registration No. 329245, a fuel input pipe Ic is installed on the upper portion of a combustion chamber 1, with a screw Id being installed in the fuel input pipe Ic. By rotating a screw shaft If, a prescribed amount of fuel stored in a storage tank Ie is automatically input into the stove at regular intervals. As the screw shaft rotates, coal is supplied along the screw to the combustion chamber. However, the conventional stove is problematic in that coal has various shapes, and, in addition, is heavy, so that the coal may be caught in the screw, thus a motor for driving the screw is undesirably overloaded. Further, the stove has another problem in that a grate 101 must be pulled out from the stove so as to get rid of burned coal. That is, it is impossible to automatically discharge the coal to the outside.

[4] U.M. Laid-Open Publication No. 1987-0000958, entitled "Heating Device for Solid

Fuel", does not disclose a unit for automatically supplying coal to a combustion chamber or a unit for automatically recovering coal.

[5] In the "System for Automatically Supplying Coal to Furnace" disclosed in U.M.

Registration No. 0355095, a rotary coal container 7 provided on the lower portion of a storage tank 1 includes a cut part 11 having a fan-shaped groove which is provided around an axis. Thus, when the rotary coal container 7 rotates so that the cut part 11 is located at an upper position, the rotary coal container 7 contains coal 8. Conversely, when the rotary coal container 7 rotates so that the cut part 11 is located at a lower position, the rotary coal container 7 discharges the coal 8 to the furnace. However, the utility model is problematic in that the coal may be caught in a fixed screen 20 and the rotary coal container 7, so that the coal may not be supplied to a combustion chamber. In the utility model, no means for automatically discharging coal that remains after being burned in the combustion chamber is disclosed.

[6] In the "Coal Boiler" of Korean Patent Laid-Open Publication No.

10-2002-0082303, no supply unit for supplying a prescribed amount of coal is disclosed. Further, it is problematic in that it is impossible to discharge remaining coal after it has been burned in a combustion chamber. Disclosure of Invention Technical Problem

[7] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a stove having a control means so as to enable a prescribed amount of coal to be precisely input into a furnace.

[8] Another object of the present invention is to provide a stove, which is capable of automatically discharging coal burned in a furnace, and supplying an amount of coal corresponding to the amount of discharged coal to the furnace, thus permitting continuous combustion. Technical Solution

[9] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to FIGS. 1 to 4.

[10] As shown in FIG. 1, a stove according to the present invention includes a furnace

10 having a mesh net 12 therein, a fuel supply pipe 20, which supplies coal to the furnace 10, a storage tank 30, which stores the coal to be supplied to the fuel supply pipe 20, a discharge unit 40, which discharges coal burned in the furnace 10 to the outside, a mesh conveyor 70, which conveys the coal discharged from the discharge unit 40, a driving means 60, which operates the discharge unit 40 and the mesh conveyor 70 simultaneously, and a control box 50 which controls the amount of coal supplied to the furnace 10 to correspond to the amount of coal discharged from the discharge unit 40.

[11] According to this embodiment, the furnace 10 has a rectangular cross-section.

However, the furnace may have various cross-sections, such as a circular or elliptical cross-section, and is not limited to the rectangular cross-section. The mesh net 12 provided in the furnace 10 causes coal dropping from the fuel supply pipe 20 to fall on coal which is being burned.

[12] Reference numeral 14 denotes a lid of the furnace, and reference numeral 16 denotes a stovepipe which discharges smoke, generated while the coal is burned in the furnace, to the outside.

[13] A pointed triangular distributor 18 is provided on the center of the bottom in the furnace 10. The triangular distributor 18 serves to uniformly distribute coal which is input into the furnace 10 along the fuel supply pipe 20.

[14] The fuel supply pipe 20 which supplies coal to the furnace 10 is installed to communicate with the above-mentioned mesh net 12. Further, another mesh net 112 is provided on an end of the fuel supply pipe 20, thus allowing coal to be easily input into the mesh net 12 of the furnace 10, in addition to preventing heat from being transmitted to the fuel supply pipe 20.

[15] As shown in FIGS. 1 and 2, a control means 22 is further mounted to the fuel supply pipe 20 so as to precisely input a prescribed amount of coal into the furnace 10.

[16] The control means 20 includes an on-off member 222, a reinforcing plate 226, and a rotating member 224. The on-off member 222 is mounted to one side of the fuel supply pipe 20. The reinforcing plate 226 is mounted to the upper surface of the on-off member 222. The rotating member 224 is mounted to another side of the fuel supply pipe 20, with a press member 224a mounted on the rotating member 224.

[17] The rotating member 224 is rotated at a predetermined angle by a motor M. Herein, the method of driving the rotating member 224 coupled to the motor M is not shown. However, the rotating member may be directly connected to a rotating shaft of the motor M. Further, the method of driving the rotating member using a chain or gear is possible.

[18] Preferably, the press member 224a of the rotating member 224 comprises protrusions which are arranged on the outer circumference of the rotating member 224 at regular intervals. The rotating member 224 is configured such that it is not in direct contact with the on-off member 222 but is in contact with one end of the reinforcing plate 226 which is attached to the upper surface of the on-off member 222.

[19] As shown in FIGS. 3a to 3d, the control means 22 is operated. That is, when the motor M is operated, the rotating member 224, operated in conjunction with the motor, starts rotating. Simultaneously, the press member 224a mounted on the outer cir¬ cumference of the rotating member 224 is rotated. As the press member 224a rotates, the press member 224a moves an end of the reinforcing plate 226 downwards. By a space defined by the downward movement of the reinforcing plate, coal is discharged to the fuel supply pipe 20. Simultaneously, coal stored in the storage tank 30 is scraped and discharged to the fuel supply pipe 20. To this end, it is preferable that the on-off member 222 be a leaf spring. The elasticity of the leaf spring may be adjusted, according to the capacity of the storage tank.

[20] The motor M may be controlled by a control system which is installed in the control box 50. The control system, which will be described below in detail, functions to feed new coal into the furnace 10 in proportion to the amount of coal which is burned and discharged to the outside.

[21] As such, when the press member 224a contacts one end of the on-off member 222 and the rotating member 224 is operated so that the on-off member 222 moves downwards by a predetermined distance, coal drops to the fuel supply pipe 20 due to gravity. Thus, the motor M is operated under a no-load condition, so that the overload of the motor M is prevented and power consumption is reduced.

[22] According to this embodiment, the control means 22 is constructed so that the re¬ inforcing plate 226 is attached to the upper surface of the on-off member 222. However, the control means 22 may be designed differently without being limited to this embodiment. That is, if the on-off member 22 is appropriately designed in con¬ sideration of its elasticity, it is not necessary to attach the reinforcing plate 226 to the upper surface of the on-off member 222.

[23] The capacity of the storage tank 30 varies according to the capacity of the furnace

10.

[24] The discharge unit 40, which discharges coal burned in the furnace 10 to the outside, includes a rotatable plate 42 and a stationary plate 44. Holes a are formed in the rotatable plate 42, and the rotatable plate 42 has on-off members 422 which open or close the holes. The stationary plate 44 is provided under the rotatable plate 42, with a hole b being formed in the stationary plate 44.

[25] Each on-off member 422 is hinged to a predetermined portion of the rotatable plate

42.

[26] The rotatable plate 42 is rotated by a driving means 60 which will be described in detail later, whereas the stationary plate 44 provided under the rotatable plate 42 is not rotated but is fixed. The rotatable plate 42 is rotated by the operation of the driving means 60. As the rotatable plate 42 rotates and reaches a position where one hole of the rotatable plate is aligned with the hole of the stationary plate 44, each on-off member 422 is moved downwards by the load of coal deposited on the on-off member 422, so that coal is discharged to the outside of the discharge unit 40. The process of discharging the coal out of the discharge unit 40 is shown in FIGS. 4a to 4c.

[27] Particularly, as shown in FIG. 4a, when the rotatable plate 42 deviates from a position where the hole thereof is aligned with the hole b of the stationary plate 44, each on-off member 422 of the rotatable plate 42 contacts the stationary plate 44, so that the on-off member 422 is closed.

[28] A blade 424 is mounted to the rotatable plate 42, and functions to scrape up coal when the rotatable plate 42 is rotated.

[29] Coal discharged from the discharge unit 40 is discharged to the outside of the stove by the mesh conveyor 70. [30] The driving means 60 is constructed to simultaneously drive the discharge unit 40 and the mesh conveyor 70. The driving means 60 includes a motor 62, a first gear 64, which is mounted to a rotating shaft of the motor 62, and a second gear 66, which is mounted adjacent to the first gear 64 and secured to the rotating shaft.

[31] As the motor 62 rotates, the rotating shaft 80a of the motor is rotated, and the first and second gears 64 and 66 mounted to the rotating shaft 80a are rotated.

[32] The first gear 64 is coupled to a rotating shaft 80b mounted to the mesh conveyor

70, using a chain 80c, thus operating the mesh conveyor 70. The second gear 66 is rotated in conjunction with a third gear 68 which is coupled to the rotatable plate 42.

[33] The mesh conveyor 70 is arranged to be at an angle to a horizontal surface, thus preventing the motor 62 from being overloaded when the coal is discharged to the outside.

[34] The control box 50 is mounted to the lower portion of the furnace 10. A thermometer and a calorimeter are installed on the control box 50 to check the internal temperature of the furnace 10 and the quantity of heat generated by the combustion. When the temperature and the quantity of heat in the furnace 10 are below preset levels, the control box 50 sends a signal to operate the motor M of the control means 22, and simultaneously sends a signal to drive the driving means 60. Thereby, the motor M and the driving means 60 are operated.

[35] As such, when the motor M and the driving means 60 are simultaneously operated, a prescribed amount of coal is supplied to the furnace 10. Coal remaining after in¬ cineration is discharged through the discharge unit 40 out of the furnace 10. The discharged coal is completely discharged to the outside of the stove through the mesh conveyor 70.

[36] According to this embodiment, the motor M and the driving means 60 are simul¬ taneously operated. However, the motor M and the driving means 60 may be operated at a predetermined interval without being simultaneously operated.

[37] The combustion method in the furnace, especially the prior art regarding a coal stove, is not described herein, because it will be obvious to those skilled in the art.

[38] Herein, the construction of inputting coal into the furnace and discharging coal, which remains after incineration, to the outside has been mainly described. However, those skilled in the art will appreciate that various modifications, additions and sub¬ stitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Advantageous Effects

[39] As described above, the present invention is constructed so that a press member contacts one end of an on-off member, thus allowing a prescribed amount of coal to be precisely input into a furnace by the rotation of a rotating member rotating the press member.

[40] Further, a control system of a control box according to the present invention allows coal burned in the furnace to be automatically discharged to the outside, and supplies an amount of coal, corresponding to the amount of discharged coal, to the furnace, thus affording continuous combustion. Brief Description of the Drawings

[41] FIG. 1 is a perspective view of a stove, according to the present invention;

[42] FIG. 2 is a perspective view of a control means shown in FIG. 1 ;

[43] FIGS. 3a to 3d are views showing the operation of the control means shown in FIG.

2; and

[44] FIGS. 4a to 4c are views showing the operation of a discharge unit shown in FIG. 1.

[45] *Description of reference characters of important parts*

[46] 100: stove

[47] 10: furnace 20: fuel supply pipe

[48] 22: control means 222: on-off member

[49] 224: rotating member 224a: press member

[50] M: motor 30: storage tank

[51] 40: discharge unit 42: rotatable plate

[52] 422: on-off members 44: stationary plate

[53] 50: control box 60: driving means

[54] 62: motor 64: first gear

[55] 66: second gear 68: third gear

[56] 70: mesh conveyor

Best Mode for Carrying Out the Invention

[57] In order to accomplish the objects, the present invention provides a stove, including a furnace, a fuel supply pipe to supply coal to the stove, a storage tank to store the coal to be input into the fuel supply pipe, and a control means which is provided at a pre¬ determined position in the fuel supply pipe and controls an amount of coal input from the storage tank.

[58] Further, the control means includes an on-off member comprising a leaf spring, and a rotating member contacting an end of the on-off member, with a press member being provided on an outer circumference of the rotating member.

[59] The stove further includes a reinforcing plate on an upper surface of the leaf spring.

[60] The stove further includes a discharge unit to discharge coal, which has been burned in the stove, to the outside, and a driving means to operate the discharge unit.

[61] The stove further includes a control box to control the control means of the fuel supply pipe so that an amount of supplied coal is in proportion to an amount of coal discharged from the discharge unit. [62] Further, the discharge unit includes a rotatable plate having a dropping means, and a conveying means to convey the coal which is dropped by the dropping means. [63] The stove further includes a stationary plate which is provided under the rotatable plate of the discharge unit and has a hole, the dropping means being operated along the hole of the stationary plate to drop the burned coal. [64] The dropping means includes an on-off member to open or close a hole of the rotatable plate.

[65] The on-off member is hinged to a portion around the hole of the rotatable plate.

[66] The conveying means is a mesh conveyor operated by the driving means.

Claims

[I] A stove, comprising: a furnace; a fuel supply pipe to supply coal to the furnace; a storage tank to store the coal to be input into the fuel supply pipe; and control means provided at a predetermined position in the fuel supply pipe, and controlling an amount of coal input from the storage tank. [2] The stove according to claim 1, wherein the control means comprises: an on-off member; a rotating member contacting an end of the on-off member, with a press member being provided on an outer circumference of the rotating member. [3] The stove according to claim 2, wherein the on-off member comprises a leaf spring. [4] The stove according to claim 3, further comprising: a reinforcing plate provided on an upper surface of the leaf spring. [5] The stove according to claim 1, further comprising: a discharge unit to discharge coal, which has been burned in the furnace, to the outside. [6] The stove according to claim 5, further comprising: driving means to operate the discharge unit. [7] The stove according to claim 5, further comprising: a control box to control the control means of the fuel supply pipe so that an amount of supplied coal is in proportion to an amount of coal discharged from the discharge unit. [8] The stove according to claim 5, wherein the discharge unit comprises a rotatable plate having dropping means. [9] The stove according to claim 8, further comprising: a stationary plate provided under the rotatable plate of the discharge unit and having a hole, the dropping means being operated along the hole of the stationary plate to drop the burned coal. [10] The stove according to claim 9, wherein the dropping means comprises an on-off member to open or close a hole of the rotatable plate.

[I I] The stove according to claim 10, wherein the on-off member is hinged to a portion around the hole of the rotatable plate.

[12] The stove according to claim 8, wherein the discharge unit comprises conveying means to convey the coal which is dropped by the dropping means. [13] The stove according to claim 12, wherein the conveying means comprises a mesh conveyor operated by the driving means.