KR20000031933A - Briquet igniter and boiler using the same - Google Patents

Abstract

PURPOSE: A briquet igniter is provided to reduce costs as well as to easily fire a briquet as fuel of a boiler without an additional fire starter. CONSTITUTION: A briquet igniter(A) is composed of a fire grid(1), an electrode member(3) penetrated into the fire gate up and down and an ignition power source for feeding power to the electrode member. The briquet igniter starts to fire a briquet by generating a spark from the contact part between the upper corner of the electrode member and the surface of the briquet if the power is fed to the electrode member from the power source as the briquet is put on the electrode member. Therefore, the ignition is automatically performed by only supplying the briquet to a combustion unit without an additional fire starter.

Description

Briquette ignition device and boiler using the device

The present invention relates to a briquette ignition apparatus capable of igniting briquettes such as briquettes, which are solid fuels, without ignition and a boiler using the apparatus.

In general, in order to ignite in a boiler using briquettes such as briquettes (hereinafter referred to as "briquettes"), a relatively large amount of separate ignition plugs must be used, which makes it difficult to use and increases the cost of ignition. .

In addition, in general boilers, as the fuel is briquettes or briquettes that are burned, additional fuel is added to the operator at regular intervals based on experience, which makes the management of the boiler cumbersome and difficult to obtain constant performance. There was this.

In addition, since the boiler is used to boil water and use the hot water as a heat medium or generate hot air, the hot water and hot air require two types of boilers, and thus the installation cost increases.

Accordingly, an object of the present invention is to provide a briquette ignition device and a boiler using the device, which enables to easily and quickly ignite the coal briquettes as a fuel of a boiler without using a separate fire plug and to reduce the cost of ignition. Is to provide.

Another object of the present invention is to provide a boiler that can perform the boiler and briquette ash discharged in a timely manner to properly exhibit the performance of the boiler.

1 is a partial broken front view showing an example of a briquette ignition apparatus according to the present invention.

2 is a plan view showing an example of a briquette ignition apparatus according to the present invention.

Figure 3 is a longitudinal side view showing an example of the boiler according to the present invention.

Figure 4 is a partial longitudinal side view showing a state in which the coal supply is completed in the boiler according to the present invention.

Figure 5 is a partial longitudinal side view showing a process in which the coal briquettes and the briquette ash discharge at the same time in the boiler according to the present invention.

6 is an exploded view of a heating pipe connected to the present invention.

** description of the symbols for the main parts of the drawings **

1: grate 3: electrode member

3a: Air supply and briquette discharger 4: Power source for ignition

5: spring 6: switch operating piece

7a: upper and lower limit switch 7b: lower limit limit switch

10: main cabinet 13: hot air outlet

20: combustion unit 30: coal supply unit

40: combustion gas exhaust unit 50: briquette ash discharge unit

60: hot water and steam generating unit 70: hot air discharge unit

In order to achieve the object of the present invention, a grate installed in the lower portion of the combustion chamber, an electrode member penetrating through the grate and at least an upper end protruding from the upper surface of the grate, and an ignition power supply unit for applying ignition power to the electrode member. Briquette ignition apparatus is provided, characterized in that provided with.

Further, in order to achieve the object of the present invention, in the boiler for generating a heating hot water and hot air steam by using the combustion heat of briquettes in the combustion section, the lower portion of the combustion section penetrates the grate and the grate and at least the upper end of the grate The boiler is provided by installing an extension ignition device having an electrode member protruding from the ignition power source for applying the ignition power to the electrode member.

The grate is elastically supported upward by a plurality of springs, an upper limit switch for sensing the upper limit of the grate and a lower limit switch for detecting the lower limit is installed on one side of the lower side of the combustion unit, and the upper limit on one side of the grate. A switch operating piece for selectively operating the limit switch and the lower limit limit switch is installed.

Hereinafter, the present invention will be described in detail according to the embodiments shown in the accompanying drawings.

1 is a longitudinal sectional view showing a briquette ignition apparatus according to the present invention, Figure 2 is a plan view.

As shown in FIGS. 1 and 2, the briquette ignition apparatus A according to the present invention includes a grate 1, an electrode member 3 penetrating up and down the grate 1, and the electrode. It consists of the ignition power supply part 4 which supplies power to the member 3.

The grate 1 is formed of an insulating refractory material. In addition, the grate 1 is not limited to the disc shape as shown in the example, it can be changed to a square, for example, depending on the shape of the boiler combustion chamber.

The grate 1 has a plurality of through holes 2 through which the electrode member 3 penetrates in the vertical direction.

The electrode member 3 is formed of a metal material of a conductive material, and a material whose melting temperature is higher than the combustion temperature of briquettes as fuel is used.

The power supplied from the ignition power supply unit 4 may be any one of an ordinary AC power source and a DC power source.

The briquette ignition device (A) is installed at the bottom of the combustion chamber of the boiler, and when the briquettes are fed and placed on the electrode member (3), the power is applied to the electrode member (3) from the ignition power supply section (4). Sparking occurs in the contact area between the top edge of the surface and the surface of the briquettes, and instantaneous ignition occurs.

Therefore, the ignition is automatically performed by simply supplying briquettes C to the combustion unit 20 without using a separate igniter.

In addition, since the electrode member 3 is perforated with both the up and down air supply combined briquette discharge hole (3a) when installed in the bottom of the combustion chamber of the boiler to ignite the briquettes, air is supplied through the combined supply air supply briquette (3a) Therefore, the combustion is made smoothly.

In addition, in the illustrated example, the air supply dual-purpose briquette discharge hole is drilled in the electrode member 3, but is not necessarily limited thereto, and the air supply dual-purpose briquette discharge hole may be drilled in the grate 1.

3 to 6 show an embodiment of a boiler using a briquette ignition apparatus according to the present invention, in which 10 is installed in a state supported on the upper portion of the frame 11 as a main body cabinet.

The cabinet 10 includes a front plate 10a, a back plate 10b, a top plate 10c, a bottom plate 10d, and both side plates (not shown).

The door 12 is installed to be opened and closed under the front surface of the cabinet 10, and a hot air outlet 13 is formed in the upper front plate 10a.

In the cabinet 10, a combustion unit 20 is disposed at a central portion in the front and rear direction, a coal supply unit 30 is disposed at a front side thereof, and a combustion gas exhaust unit 40 is disposed at a rear side thereof. The briquette ash discharge part 50 is installed over the lower part of the part 20 and the lower part of the combustion gas exhaust part 40, and a boiling water and a steam generating part 60 are provided in the combustion part 20. The hot air generating unit 70 is installed inside the hot air discharge port 13 to emit hot air using the heat of steam generated by the hot water and steam generating unit 60.

The combustion unit 20 is partitioned by the partitions 14a and 14b with respect to the coal supply unit 30 and the combustion gas exhaust unit 40, respectively, and the combustion gas exhaust unit 40 and the hot air generating unit 70 are Partitioned by the partition wall 15, the hot air generating unit 70 is partitioned by the partition wall (16a, 16a) with respect to the combustion section 20 and the coal supply section 30, respectively, and the combustion gas exhaust section 40 and The briquette ash discharge part 50 is partitioned by the partition 17.

Preferably, the partitions 14a, 14b, 15, 16a, 16b, and 17 are made of a refractory material.

The briquette ignition device (A) is installed below the combustion unit (20).

That is, the grate 1 through which the plurality of electrode members 3 penetrates up and down is installed below the combustion unit 20, and the power source of the ignition power supply unit 4 is connected to the electrode member 3. .

The grate 1 is installed to be elevated in a state that is always elastically supported by a spring 5, the switch operating piece 6 is fixed to one side of the grate 1, the combustion unit 20 An upper limit limit switch 7a and a lower limit limit switch 7b which are selectively operated by the switch operating piece 6 are provided on either one of the partitions 14a and 14b for partitioning.

The elastic force of the spring 5 is grate (1) by the weight of the grate (1) and the electrode member (3) itself and the weight of the briquettes (C) when the upper limit of the coal is made from the coal supply unit 30 And the electrode member 3 descends to the lower limit position, the switch operating piece 6 operates the lower limit switch 7b, and the fired briquettes C are burned to reduce the weight of the briquettes C. (1) and the electrode member (3) is raised by the elastic force of the spring (5), and when the briquettes (C) briquettes reach the lower limit value, the switch operating piece (6) operates the upper and lower limit switches (7a) It is set to.

The switch operating piece 6 and the limit switches 7a and 7b are preferably installed on the side of the partition 14a close to the door 12 side for maintenance.

The spring 5 is supported by a spring support projection 8 protruding from the bottom surface of the grate 1 and a spring support piece 9 protruding from the inner surfaces of the partitions 14a and 14b.

In FIG. 3, only one spring support protrusion 8 and one spring support piece 9 are shown on both sides, but the grate 1 is installed at four positions before and after, left and right, and is stabilized by four springs 5. It is desirable to be supported by.

The feeder unit 30 includes a low carbon space 31 defined by the front plate 10a, the partition 14a, the partition 16b, and the bottom plate 32 of the cabinet 10, The grating plate 33 is installed at a position spaced upwardly from the bottom plate 32, and is provided between the bottom plate 32 and the grating plate 33, and the feed hole 34a formed in the partition wall 14a. A coal feed passage 34 communicating with the combustion unit 20, a coal feed screw 35 rotatably installed in the coal feed passage 34, and a coal feed driving means for rotationally driving the coal feed screw 35. It is composed.

The feeder drive means includes a drive motor 36 installed in the machine room M formed between the bottom plate 10d, the partition 14a, the door 12, and the bottom plate 32, and the drive motor ( It consists of a power transmission mechanism for transmitting the rotational force of 36) to the feed screw (35).

The power transmission mechanism includes a coal feed driving sprocket 37a fixed to the shaft of the drive motor 36, a coal feed driven sprocket 37b fixed to the coal feed screw 35, and the coal feed driven sprocket 37a and a coal feed driven sprocket. It consists of the chain 37c which connects 37b.

In addition, the bottom plate 32 of the coal supply unit 30 is preferably formed to be lowered toward the coal feed hole (34a) formed in the partition 14a.

The combustion gas exhaust portion 40 is formed between the partition wall 15b and the back plate 10b and communicates with the combustion unit 20 through the combustion gas exhaust hole 42 bored in the partition wall 15b. It is composed of a gas discharge passage 41 and a stack 43 in communication with the combustion gas discharge passage 41 through an exhaust hole 44 drilled in the upper surface plate 10c.

The combustion gas discharge passage 41 is divided into front and rear passages 41a and 41b by a partition wall 45 provided in the middle portion of the front and rear directions in order to delay the residence time of the combustion gas, and is configured to communicate only at the lower end portion.

The briquette ash discharge portion 50 is a briquette ash discharge passage 51 formed over the lower portion of the combustion unit 20 and the combustion gas exhaust 40, and the briquettes formed on the rear side of the briquette ash discharge passage 51 It comprises a discharge hole 52, briquette ash discharge screw 53 rotatably installed in the briquette ash discharge passage 51, and briquette ash discharge driving means for rotating the briquette ash discharge screw 53.

The briquette ash discharge screw 53 is rotatably supported on the bottom of the machine room M and the back plate 10b.

The briquette ash discharge driving means includes a briquette ash discharge driving sprocket 54 fixed to the coal briquette screw 35 of the coal briquette driving means, a briquette ash discharge driven sprocket 55 fixed to the briquette ash discharge screw 53 and these sprockets ( It consists of a chain 56 connecting 54, 55.

The hot water and steam generating unit 60 is installed in the combustion unit 20 and a hot water generating cylinder 61 which generates hot water while being heated by the combustion heat in the combustion unit 20, and the hot water generating cylinder 61. Is installed in the upper portion of the steam generating tube 64 is connected to the hot water generating cylinder 61 by the steam connection pipe (62).

The hot water generating cylinder 61 is formed with a hot water supply hole 61a and a hot water returning hole 61b to which the heating pipe 80 is connected.

An instantaneous water heater (63) is built into the boiling water generator (61).

The instantaneous water heater 63 is a conventional water that is instantaneously heated by the heat generated in the hot water generating tank 61 and flows out again to the hot water pipe, the water inlet pipe (not shown) 63a), the other side is connected to the hot water outlet pipe (63b).

The steam generating cylinder 64 is connected to the upper portion of the boiling water generating cylinder 61 by a steam connection pipe 62 to be installed so that hot steam generated in the boiling water generating cylinder 61 can be introduced thereon. The steam supply hole 64a is formed at the other side, and the steam return hole 64b is formed at the other side.

The hot air generating unit 70 is exposed to the outside through the external air inlet space 71 formed on the combustion unit 20 and the back plate 10b and the combustion gas exhaust unit 40 An external air inlet pipe 72 connected to the external air inlet space 71 via a combustion gas discharge passage 41, and installed in front of the air inlet space 71 to provide steam in the steam generating tube 64. The hot air heat exchanger 73 is connected to the supply hole 64a and the vapor return hole 64b, and is provided between the hot air heat exchanger 73 and the hot air outlet 13 of the front plate 10a. It consists of a hot air discharge fan 74.

The external air inflow pipe 72 is connected to the external air inflow space 71 through the rear passage 41b and the front passage 41b of the combustion gas discharge passage 41.

The hot air heat exchanger 73 is connected to the steam supply hole (64a) of the steam generating tube (64) through the steam supply pipe (73a) and the steam return of the steam generating tube (64) through the steam return tube (73b) Connected to ball 64b.

The hot air outlet 13 is provided with a wind direction control grill (13a).

In the middle of the heating pipe 80, a supplemental water tank 81 for replenishing water that is insufficient while evaporating by heating of the hot water and steam generator 60 is connected to the supplemental water pipe 84.

The replenishment water tank 81 is supplied with tap water through the water pipe 82, and is configured to maintain a constant water level at all times by the float valve 83.

The upper limit switch 7a and the lower limit switch 7b, the drive motor 36 and the hot air discharge fan 74 are connected to a boiler control box (not shown).

Hereinafter, the operation of the boiler according to the present invention will be described.

The state in which the water is filled in the boiling water generating cylinder 61 and the heating pipe 80 will be described as an initial state.

In a state where briquettes C are low in the low coal space 31 of the coal supply unit 30 and briquettes are not fired on the side of the grate 1 installed below the combustion unit 20, the total weight of the grate 1 is spring ( Since the elastic force of 5) is not overcome, the grate 1 is maintained at an upper limit by the elastic force of the spring 5, and thus the switch operating piece 6 coupled to one side of the grate 1 is The upper limit limit switch 7a is turned "on", so that the driving motor 36 is activated and its rotational force is supplied through the coal driving sprocket 37a, the chain 37c, and the coal feeding driven sprocket 37b. The coal briquettes C are rotated and the coal feed screw 35 is rotated. At this time, the briquettes C dropped from the lower end of the low coal space 31 to the coal feed passage 34 through the grid 33 are transferred by the coal feed screw 35. Grate (1) located in the lower portion of the combustion section (20) through the feed hole (34a) at the rear end of the feed passage (34). It drops up as it falls up.

As the coal briquettes are made to the combustion unit 20, the grate 1 is lowered by overcoming the elastic force of the spring 5 by the weight of the grate 1 and the weight of the briquette C. The upper limit limit switch 7a "on" by the piece 6 is "off". At this time, even if the upper limit switch 7a is "off", the feed screw 35 rotates for a predetermined time set by the control box and continues feeding.

When the set amount of coal supply is made, as shown in FIG. 4, the grate 1 is lowered to the lower limit height. Accordingly, when the switch operating piece 6 turns on the lower limit switch 7b, the driving motor 36 stops, rotation of the feed screw 35 is stopped, and feed supply is completed.

This briquette action is to be made repeatedly if the weight is reduced as the briquette (C) is burned.

When the initial supply of coal is completed, when the power supply for the ignition power source 4 is applied to the electrode member 3 by the command of the control box, the ignition power is applied between the upper end of the electrode member 3 and the briquettes C placed thereon. Sparks occur and ignite instantly.

Such ignition may be performed in a state in which the initial supply is completed, but may be performed immediately after the supply is advanced and the upper and lower limit switches 7a are "off".

When the briquette C is burned by ignition, hot water and steam are generated while the water in the hot water generating tank 61 of the hot water and steam generator 60 is heated by the heat, and the combustion gas is a combustion gas discharge hole 42. The flue is discharged to the front passage (41a) of the combustion gas discharge passage 41 through the lower end of the partition wall 45 to the rear passage (41b) and connected to the exhaust hole (43) formed on the top ( Through 44).

The hot water generated in the hot water generating cylinder 61 is supplied to the heating pipe 80 through the hot water supply hole 61a and circulated in such a manner that the hot water is returned to the hot water generating cylinder 61 through the hot water returning hole 61b. Heating will be performed.

In addition, the instantaneous water heater 63 built in the hot water generating tank 61 is heated by the hot water introduced through the tap water inlet pipe (63a) is discharged through the hot water outlet pipe (63b) as hot water to require hot water It is supplied to the place.

On the other hand, the hot water generating cylinder 61 is a high-temperature steam is generated along with the hot water, this high temperature steam is introduced into the steam generating tube 64 through the steam connection pipe 62, the steam generating cylinder 64 After being supplied to the heat exchanger for hot air through the steam supply hole (64a) and the steam supply pipe (73a) of the heat dissipation, it is returned through the steam return hole (64b) and the steam return pipe (73b).

In this case, when the hot air discharge fan 74 is operated, the external air introduced through the external air inlet pipe 72 and the external air inlet space 71 is heated while being heat-exchanged with the heat exchanger 73 for hot air, and then the hot air discharge fan. By the 74 is discharged through the hot air outlet 13 is to perform the hot air heating.

At this time, the external air inlet pipe 72 is disposed over the rear passage 41b and the front passage 41a of the combustion gas discharge passage 41 and the combustion gas is the front passage 41a of the combustion gas discharge passage 41. Since it is discharged through the rear passage 41b and is preheated by the combustion gas in the process of the external air flows through the external air inlet pipe 72 and then introduced into the external air inlet space 71 so that waste heat can be recycled. will be.

On the other hand, when the briquette C injected into the combustion unit 20 is combusted to ash C1 as shown in FIG. 5, the combined air supply briquette ash discharge hole drilled in the electrode member 3 penetrated through the grate 1 It is discharged through 3a) and falls into the briquette ash discharge passage 51 of the briquette ash discharge unit 50.

The coal briquettes dropped into the briquette ash discharge passage 51 are briquette ash discharge drive sprockets 54, the chain 56 and the briquette ash discharge sprockets 55 when the driving motor 36 rotates the coal feed screw 35 for the above-mentioned coal feed. It is discharged to the briquette ash discharge hole 52 by the briquette ash discharge screw 53 received a rotational force through).

At this time, the coal briquette action is performed in the stage where the briquette briquettes are burned in the combustion unit 20 and the grate 1 rises. In this stage, briquettes are generated to some extent, so that the briquettes and briquettes are smoothly discharged. will be.

That is, as described above, as the combustion proceeds, briquettes are generated and the weight of the briquettes C, which is suddenly fired in the combustion unit 20, is reduced, so that the grate 1 is raised to the upper limit by the switch operating piece 6. The coal briquettes are made in a state in which the switch 7a is turned "on". In this state, a large amount of briquettes are accumulated in the briquette ash discharge passage 51 of the briquette ash discharge unit 50. At the same time, briquettes are discharged at the same time, so the briquettes and briquettes are discharged in a timely manner.

As described above, according to the briquette ignition apparatus of the present invention, since the ignition is performed by only inserting the briquettes without using a separate igniter, the cost of using the igniter can be reduced, and the use is easy. In addition, according to the boiler of the present invention, the supply of briquettes and briquettes is automatically performed in a timely manner so that the performance of the boiler can be accurately exhibited.

Claims (7)

Briquette ignition, characterized in that it comprises a grate installed in the lower portion of the combustion chamber, an electrode member penetrating the grate at least the upper end protruding from the upper surface of the grate, and an ignition power supply for applying ignition power to the electrode member Device. The briquette ignition apparatus according to claim 1, wherein the electrode member is formed by penetrating an air supply and a double briquette material discharge hole. The briquette ignition device according to claim 1, wherein the grate is formed by penetrating up and down with a briquette-charging hole for double air supply. A boiler for generating heating hot water and steam for hot air by using combustion heat of briquettes in a combustion unit, the lower part of the combustion unit penetrating through the grate and the grate and at least an upper end of the electrode member and the electrode member protruding from the upper surface of the grate A boiler by installing a briquette ignition device having an ignition power supply unit for supplying ignition power to a house. 5. The boiler according to claim 4, wherein the electrode member has a briquette material discharge hole for both combustion air supply and penetrates up and down. The boiler according to claim 4, wherein the grate has a combustion air supply combined briquette ash discharge hole penetrated vertically. According to claim 4, The grate is elastically supported upward by a plurality of springs, One side of the lower side of the combustion unit is provided with an upper limit switch for sensing the upper limit of the grate and a lower limit switch for sensing the lower limit, One side of the grate boiler characterized in that the switch operating piece for selectively operating the upper limit switch and the lower limit switch is installed.