KR200292040Y1 - reducer furnace for china and porcelain - Google Patents

Abstract

The present invention relates to a reducing kiln for ceramics of a new structure that can uniformly supply a reducing agent into the kiln.

According to the present invention, the kiln main body 10 having the heating chambers 12 and 14 therein, the circulation fan 20 provided in the heating chambers 10 and 12, and the heating chambers 10 and 12 In the reducing kiln for ceramics comprising a reducing agent supply pipe 30 for supplying a reducing agent into the inside, the circulation fan 20 is a disk-shaped disk 22, the disk 22 is spaced at a predetermined angle apart from one surface of the disk 22. And a plurality of blades 24 radially disposed, and a plurality of through holes 26 formed between the blades 24 and the blades 24 of the disk 22 and aligned with the reducing agent supply pipe 30. The reducing agent is supplied between the blades 24 and the blades 24 through the through-holes 26 of the reducing agent supply pipe 30 and the circulation fan 20, and the circulating heat in the heating chambers 12 and 14, respectively. There is provided a reducing kiln for ceramics, which is configured to be mixed.

Description

Reduction furnace for china and porcelain}

The present invention relates to a reducing kiln for ceramics, and more particularly, to a reducing kiln for ceramics of a new structure, which is capable of uniformly supplying a reducing agent into the kiln.

Generally, the fuel used to burn ceramics is wood, gas or electricity. However, when wood is used as fuel, temperature control is not easy and fuel costs are very high. Therefore, when burning large quantities of ceramics, a gas kiln using LP gas as a fuel is used. In the kiln using LP gas, a plurality of gas burners are installed in a kiln main body in which a heating chamber is formed, and the ceramics are baked using heat generated when burning the gas. An exhaust pipe for discharging the combustion gas generated by burning the gas is provided. On the other hand, the gas burner supplies air together with the gas so that the gas can be combusted in the heating chamber, and at the same time, the internal pressure of the kiln is maintained to be slightly higher than atmospheric pressure.

Therefore, when gas is combusted using a gas burner while supplying air into the kiln, an appropriate air flow is generated in the kiln, reducing salts are generated, and the glaze applied to the ceramics causes a reduction reaction to give a faint blue light. In this case, the entire inside of the kiln is kept at a uniform temperature to uniformly fire the ceramics. At this time, the combustion gas generated when burning the gas is discharged to the outside through the exhaust pipe.

However, the gas kiln for baking ceramics using LP gas as described above must continuously inject air at room temperature to burn the gas. Therefore, when supplying air at room temperature, a larger amount of gas may be used to raise the temperature. Not only must it combust, but also the combustion price generated by burning gas must be discharged to the outside, which can cause pollution problems or environmental pollution, and can also cause an explosion accident if the gas is mishandled. There was this.

Therefore, recently, a method of baking ceramics using an electric furnace equipped with an electric heater has been developed and used. These electric kilns have the advantage of easy temperature control by using electric heaters and significantly reduce fuel costs compared to gas kilns, but are convenient to use, but they cannot be used when baking soft blue-purple porcelain due to no reducing salts. There is a drawback that it is used only when firing oxidized ceramics.

Therefore, in order to overcome the problems described above, an electric kiln equipped with a reducing agent supply means has been developed by the applicant and has been filed by the patent application 2001-0029825. The electric kiln is provided with a circulation fan to forcibly purify the internal circulation heat on the inner bottom of the heating chamber of the kiln body, the air supply passage to which the air supply fan is connected is vertically formed in the center of the bottom of the kiln body, It is configured to supply external air into the heating chamber through this air supply passage. On the other hand, the circulation fan is configured by vertically installing a plurality of blades in the radial direction on the upper surface of the disk consisting of a disk shape, mounted on the upper end of the rotary shaft vertically penetrating the air supply passage of the kiln body, the rotary shaft is driven Rotating in accordance with the same, as the general centrifugal fan, the hot air in the upper portion is sucked and discharged in the radial direction, the heat inside the heating chamber is circulated.

On the other hand, by connecting the LP gas tank to the air supply passage, supplying the LP gas as a reducing agent through the air supply passage inside the heating chamber to burn the LP gas while reducing the flame, that is, the glaze to cause the reduction reaction Generated, and the porcelain is configured to be baked in a light blue purple. Therefore, the LP gas, which is a reducing agent, enters the inside of the heating chamber through the gap between the disk of the circulation fan and the bottom surface of the heating chamber through the air supply passage and burns, causing the glaze of the ceramic to cause a reduction reaction.

However, in this case, while the circulating heat inside the heating chamber is circulated through the blades of the circulating fan, the reducing agent is supplied through the bottom of the disk of the circulating fan, so that the reducing agent cannot be mixed with the circulating heat inside the heating chamber, There is a problem that the porcelain inside the heating room is not uniformly calcined to blue purple because it is supplied to be driven only to the lower corner.

The present invention is proposed to solve the problems as described above, an object of the present invention is to reduce the pottery of a new structure to uniformly supply the reducing agent into the kiln to be able to sinter the porcelain in the heating chamber uniformly blue-purple It is to provide a kiln.

1 is a block diagram showing a reduction kiln for ceramics according to the present invention

2 is a block diagram showing a circulation fan drive unit according to the present invention

3 is a perspective view showing a circulation fan of the embodiment

<Description of the symbols for the main parts of the drawings>

10, kiln body 12,14. Heating chamber

20. Circulating Fan 22. Disk

24. Blade 26. Through Hole

30. Reductant supply pipe 40. Bulkhead

50. Shaft 60. Drive shaft

According to the present invention, the kiln main body 10 having the heating chambers 12 and 14 therein, the circulation fan 20 provided in the heating chambers 10 and 12, and the heating chambers 10 and 12 In the reducing kiln for ceramics comprising a reducing agent supply pipe 30 for supplying a reducing agent into the inside, the circulation fan 20 is a disk-shaped disk 22, the disk 22 is spaced at a predetermined angle apart from one surface of the disk 22. And a plurality of blades 24 radially disposed, and a plurality of through holes 26 formed between the blades 24 and the blades 24 of the disk 22 and aligned with the reducing agent supply pipe 30. The reducing agent is supplied between the blades 24 and the blades 24 through the through-holes 26 of the reducing agent supply pipe 30 and the circulation fan 20, and the circulating heat in the heating chambers 12 and 14, respectively. There is provided a reducing kiln for ceramics, which is configured to be mixed.

Hereinafter, described with reference to the accompanying drawings, preferred embodiments of the present invention is as follows. 1 to 3 illustrate an electric reduction kiln for ceramics according to the present invention, referring to the kiln main body 10 having a heating chamber 12 and 14 therein, and the heating chamber 10 and 12. ) Is provided with a circulating fan 20 and the electric heater 2 and a reducing agent supply pipe 30 for supplying a reducing agent into the heating chambers 10 and 12. At this time, the inside of the heating chamber (12, 14) is provided with a plurality of shelves (6) to put the ceramic (4) so that a large amount of ceramic (4) can be put in the heating chamber (12, 14). It is composed.

In addition, a diaphragm 40 formed of a heat-resistant material is provided in the horizontal direction below the heating chambers 12 and 14. The diaphragm 40 is installed by a support 41 to be spaced apart from the bottom of the heating chambers 12 and 14 by a predetermined interval, and the upper chamber in which the ceramics 4 are disposed in the space inside the heating chambers 12 and 14 ( 12) and the lower chamber 14 in which the circulation fan 20 is installed, and an intake passage 42 is formed at a central portion thereof, and a circumferential portion thereof is spaced apart from inner wall surfaces of the heating chambers 12 and 14. An exhaust passage 44 is formed between the inner wall surfaces of the heating chambers 12 and 14 and the periphery of the diaphragm 40 so as to induce hot air circulated by the circulation fan 20.

On the other hand, the lower side of the diaphragm 40 is provided with a circulation fan 20 for forcibly circulating the heat in the heating chamber (12, 14) as well as uniformly supply the reducing agent into the heating chamber (12, 14). . The circulation fan 20 is made of a ceramic material which is a fire-resistant material, and has a disk 22 formed in a disk shape and a plurality of blades 24 disposed radially spaced apart from the upper surface of the disk 22 by a predetermined angle. It is configured to be mounted on the upper end of the rotary shaft 50 of the ceramic material vertically penetrating the central portion of the bottom surface of the kiln body 10, as in the general centrifugal fan, the function to suck the air from the upper portion and discharge in the radial direction Do it.

In addition, a plurality of through holes 26 penetrated in the vertical direction are formed between the blades 24 and the blades 24 of the disk 22. Therefore, a reducing agent is introduced between the blades 24 and the blades 24 through the through holes 26 of the disk 22 to be uniformly mixed with the circulation heat in the heating chambers 12 and 14 so as to be circulated. .

On the other hand, the drive shaft 52 is screwed to the lower end of the rotary shaft 50, the pulley 62 is coupled to the lower end of the two drive shaft 52 by the drive motor 60. Accordingly, when the driving motor 60 is driven, the driving shaft 62, the rotating shaft 50, and the circulation fan 20 are rotated while sucking the air in the upper chamber 12 through the intake passage 42 to radiate. Discharged to the upper chamber 14 through the exhaust passage 44 formed at the periphery of the diaphragm 40.

In addition, the bottom of the kiln body 10 is provided with a reducing agent supply pipe 30 to supply a reducing agent to the kiln body 10 so that glaze can cause a reduction reaction. The reducing agent supply pipe 30 is provided to be aligned with the through-hole 26 of the disk 22, the circulation fan 20, the reducing agent supply pipe 30 is connected to the LP gas tank and the blower of the reducing agent (not shown). Therefore, the LP gas as the reducing agent and the outside air are mixed and introduced through the through hole 26 between the blade 24 and the blade 24 of the disk 22 of the circulation fan 20 through the reducing agent supply pipe 30. When the blades 24 flow in the radial direction inside the heating chambers 12 and 14, the LP gas introduced into the heating chambers 12 and 14 is burned, causing a flame to cause a reduction reaction, that is, a glaze reduction reaction. Is generated, the glaze causes a reduction reaction, and the porcelain is baked in a light blue purple.

Reference numeral 54 is a collet chuck-shaped connector having a slot formed in the longitudinal direction on the lower side to prevent the rotation shaft 50 from being broken when the rotary shaft 50 of the ceramic material is screwed with the drive shaft 52.

According to this configuration, by circulating the air in the heating chamber (12, 14) using the circulation fan 20, the entire interior of the heating chamber (20, 22) to maintain a uniform temperature, the heating chamber (12, 14) by heating the plurality of ceramics (4) disposed inside to a uniform temperature, respectively, to produce a product of a uniform quality, as well as the reducing agent through the hole (26) of the reducing agent supply pipe 30 and the circulation fan 20 It is introduced between the blade 24 and the blade 24 through the) and evenly mixed with the internal heat of the heating chamber (12, 14) is discharged circulating in the radial direction, the reducing agent is supplied through the bottom of the disk of the circulation fan and heated as in the prior art Reducing salt is uniformly supplied to the inside of the heating chambers 12 and 14 as compared to only the bottom corner of the chamber, and the glaze applied to the ceramics 6 can cause the reduction reaction smoothly, thereby reducing the defective rate of the product. There is this.

As described above, according to the present invention, the reducing agent is introduced between the blade and the blade through the through-hole of the reducing agent supply pipe and the circulation fan, is mixed evenly with the internal heat of the heating chamber, and discharged and circulated in the radial direction. The reducing salt is uniformly supplied to the inside of the heating chamber as compared with the bottom surface and is supplied only to the lower corner of the heating chamber, so that the glaze applied to the ceramics can cause a reduction reaction smoothly, thereby reducing the defective rate of the product.

Claims (1)

The kiln body 10 provided with heating chambers 12 and 14 therein, the circulation fan 20 provided inside the heating chambers 10 and 12, and a reducing agent into the heating chambers 10 and 12 In the reducing kiln for ceramics comprising a reducing agent supply pipe 30 to supply, the circulation fan 20 is disposed in a radial direction, spaced at a predetermined angle on the disk-shaped disk 22 and one surface of the disk 22. A plurality of blades 24 and a plurality of through holes 26 formed between the blades 24 and the blades 24 of the disk 22 and aligned with the reducing agent supply pipe 30, The reducing agent is supplied between the blade 24 and the blade 24 through the through-hole 26 of the reducing agent supply pipe 30 and the circulation fan 20 is mixed with the circulation heat in the heating chamber (12, 14) Reduction kiln for ceramics.