KR200262580Y1 - Side flow type industrial furnace for frit sealing process in manufacturing process of Plasma Display Panel - Google Patents

Abstract

The present invention relates to a continuous sealing passage for a side-side hot air circulation type PDP, the insulation case 12 and the inside of the insulation case 12 surrounds the PDP and a plurality of through holes (14a) on the surface of the side plate (14) The circulating fan 22 formed between the chamber 13 and the inner case 17 installed across the inner space of the heat insulating case 12 and the chamber 13 and forcibly feeding internal air to one side thereof is provided. Installed between the upper circulation passage 20 and the one side plate 14 of the chamber 13 and the inner case 17 is provided with a heater 21 for heating the internal air pumped to the rear of the circulation fan 22. The side circulation passage 23 formed in and communicated with the upper circulation passage 20, and formed between the other side plate 14 and the inner case 17 of the chamber 13 and the upper circulation passage 20 The hot air made of the heater 21 and the circulation fan 22, including the hot air circulation passage 25 in communication with the While passing through the passage 23 is adapted to heat the PDP through the chamber 13 in the horizontal direction.

Description

Side flow type industrial furnace for frit sealing process in manufacturing process of Plasma Display Panel}

The present invention relates to a continuous sealing furnace for hot-air circulation type PDP, in particular, continuous sealing for hot-air circulation type PDP that can seal the surface substrate and the back substrate coated with the sealing material by forcibly circulating the hot air into the side drift type using the circulation fan. It's about the furnace.

In general, a plasma display panel (PDP) is a self-opening display device that displays an image by using plasma discharge. Such PDPs can be produced in thin and large sizes, have the advantages of high quality, and have recently been applied to wall-mounted or high-definition televisions.

Existing PDP sealing furnace is disclosed in Korean Patent Application No. 98-8656, which uses a heater and tube burner formed on the upper, lower, left, and right sides of the furnace to seal the surface and back substrates of the PDP with radiant heat so that no foreign matter is generated. There is an advantage. However, since the heat source depends only on the radiant heat, there is a problem in that a temperature deviation between the heat source and other parts is generated because heat is not evenly circulated throughout the furnace. In addition, when a part of the heater is discontinued or cannot generate heat by the set value, a large temperature deviation occurs in the furnace, causing a fatal defect in the PDP product.

The present invention has been devised in view of the above problems of the conventional PDP sealing furnace, which allows heat to be circulated inside the sealing furnace to uniformize the distribution of the hot air, and by controlling the amount of hot air, the temperature inside the chamber. The purpose is to provide a continuous sealing path for the side hot air circulation type PDP that can reduce the deviation and prevent defects of PDP products.

In order to achieve the above object, the present invention, a heat insulating case, a chamber surrounded by a PDP in the inside of the heat insulating case and a plurality of through-holes in the surface of the side plate, the inner case is installed across the inner space of the heat insulating case and An upper circulation passage formed between the chambers and having a circulation fan for forcibly feeding the internal air at one side, and a heater for heating the internal air compressed at the rear of the circulation fan, between one side plate of the chamber and the inner case. A side piece circulation passage formed in and in communication with the upper circulation passage, and a hot air circulation passage formed between the other side plate and the inner case of the chamber and in communication with the upper circulation passage, the heater and the circulation fan made of Losing hot air passes through the chamber in a horizontal direction while passing through the side circulation passage to heat the PDP.

The side piece circulation passage is provided with a guide plate at the rear of the heater so that hot air is branched to one side of the chamber.

An air control plate is fixed to the side plate of the chamber via a fastener, and the air hole is formed in the same manner as the side plate, and the hole is formed at a plurality of points, so as to adjust the amount of air passing as the air control plate slides with respect to the side plate. It is.

According to the continuous sealing path for the side hot air circulation type PDP according to the present invention, the hot air made of the heater and the circulation fan flows in the side drift flow method when passing through the chamber, thereby reducing the temperature deviation of the upper and lower parts of the chamber to reduce the PDP inside the chamber. Defects can be prevented from occurring.

1 is a schematic plan view showing a continuous sealing passage for a PDP according to the present invention,

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 and illustrates an internal structure of a continuous sealing path for a PDP; FIG.

Figure 3 is a side view shown in the direction B of Figure 2,

4 is a cross-sectional view taken along line C-C of FIG. 2.

Explanation of symbols on the main parts of the drawings

10: hearth roller 11: tray

12: heat insulation case 13: chamber

14: side plate 15: air control plate

16: fixture 17: inner case

18: intake port 19: exhaust port

20: upper circulation passage 21: heater

22: circulation fan 23: side circulation passage

24: information board 25: hot air circulation passage

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.

1 is a schematic plan view showing a continuous sealing path for a PDP according to the present invention, Figure 2 is a cross-sectional view taken along the line A-A of FIG.

Continuous sealing furnace for PDP according to the present invention, as shown in Figures 1 and 2, including a heating table (I), cracks (II), cooling table (III), the tray 11 of the hearth roller 10 The surface substrate and the back substrate of the PDP mounted on the panel are heated and sealed by the heating table (I), and pass through the cracking table (II) and the cooling table (III) in order.

As shown in Figure 2, the hearth roller 10 is surrounded by a heat insulating case 12, the interior of the heat insulating case 12, the chamber 13 is formed to surround the PDP, transverse to the inner space The inner case 17 is provided, and an upper circulation passage 20, a side piece circulation passage 23, and a hot air circulation passage 25 are respectively provided between the chamber 13 and the inner case 17.

As shown in FIGS. 2 and 3, the chamber 13 has a plurality of through holes 14a formed in the left and right side plates 14 to allow air to pass therethrough, and outside the left and right side plates 14, The air hole 15a is drilled at the same size and spacing as the hole 14a of the side plate 14, and the air conditioner plate 15 having the long hole 15b formed at a plurality of points is superimposed through the fixture 16 so that It is installed to reciprocate back and forth by length. Therefore, when the air control plate 15 is moved to coincide with the through hole 14a of the side plate 14 and the through hole 15a of the air control plate 15, the amount of air passing through the chamber 13 is maximized. It is possible to adjust the amount of air moving in and out of the chamber 13 by adjusting the opening area of the through hole (14a) of the side plate 14 by sliding the relative to the side plate (14). The chamber 13 has a baffle portion 13a through which air enters from a lower portion to an upper portion thereof.

On the other hand, the insulated case 12 is formed with an inlet port 18 for sending outside air to the inside of the furnace and a discharge port 19 for discharging air inside the furnace to the outside. A suction fan 18a is formed in the inlet port 18 to force the outside air into the furnace, while an exhaust fan 19a is installed in the discharge port 19 to discharge the hot air inside the furnace to the outside. It is supposed to. Here, the suction fan 18a and the exhaust fan 19a operate according to a control signal of a control panel (not shown) to smoothly intake or exhaust the inside of the furnace.

The upper circulation passage 20 is provided with a circulating fan 22 for forcibly feeding the internal air on one side, and a heater 21 for heating the internal air compressed in the rear of the circulating fan 22 is provided. . Here, the circulation fan 22 is driven by a motor (M) installed on the outside of the heat insulating case 12 serves to circulate the internal air to be pumped from one side to the other.

The side piece circulation passage 23 has an upper portion communicating with the upper circulation passage 20, and a guide plate 24 is formed at the rear of the heater 21 to be formed by the heater 21 and the circulation fan 22. Hot air is branched to one side of the chamber 13. Here, the left side portion of the side circulation passage 23 partitioned by the guide plate 24 communicates with the lower side of the side plate 14 lower portion of the chamber 13, while the right side portion of the side circulation passage 23 has the exit chamber. It is made to interlock with the upper part of the side plate 14 of 13. As shown in FIG. 4, when the hot air passes through the chamber 13, the PDP mounted on the tray 11 of the hearth roller 10 is heated, and the present invention has a side drift in which the hot air flows in the horizontal direction of the chamber 13. Side-flow method is adopted. The direction of the hot air flows from the front to the rear with respect to the drawing.

The hot air circulation passage 25 communicates with the upper circulation passage 20 so that hot air supplied from the side circulation passage 23 passes through the chamber 13 and passes through the baffle portion 13a to the upper circulation passage 20. It is intended to reenter.

According to the configuration of the embodiment of the present invention, by placing the heater 21 and the circulation fan 22 in the upper circulation passage 20, the hot air is the side piece circulation passage 23, the chamber 13, the hot air circulation passage 25, the upper portion It is configured to circulate through the circulation passage 20 in turn, and adjusts the opening areas of the side plates 14 of the chamber 13 and the through holes 14a and 15a of the air control plate 15 to enter and exit the chamber 13. The amount of hot air can be controlled.

According to the continuous sealing path for the side hot air circulation type PDP according to the present invention as described above, since the hot air flows in the side drift flow method when passing through the chamber, the PDP inside the chamber is reduced by reducing the temperature deviation of the upper and lower chambers. Defects can be prevented from occurring. In addition, the hot air is branched by the guide plate of the side circulation passage and partitioned into the upper and lower parts of the chamber, and at the same time, the amount and direction of the hot air can be adjusted by adjusting the opening opening directions of the side plate of the chamber and the air conditioner plate, thereby minimizing the temperature difference of the whole furnace. can do.

Claims (3)

Insulation case 12; A chamber 13 surrounding the PDP in the heat insulation case 12 and having a plurality of through holes 14a formed on the surface of the side plate 14; It is formed between the inner case 17 and the chamber 13 installed across the inner space of the heat insulating case 12, a circulation fan 22 for forcibly feeding the internal air is installed on one side, the circulation An upper circulation passage (20) provided with a heater (21) for heating the compressed air in the rear of the fan (22); A side piece circulation passage 23 formed between one side plate 14 of the chamber 13 and the inner case 17 and in communication with the upper circulation passage 20; And A hot air circulation passage (25) formed between the other side plate (14) of the chamber (13) and the inner case (17) and in communication with the upper circulation passage (20); Including, Hot air made of the heater 21 and the circulation fan 22 passes through the side circulation passage 23 and passes through the chamber 13 in the horizontal direction to heat the PDP. in. The method of claim 1, The side piece circulation passage 23 is provided with a guide plate 24 at the rear of the heater 21, and the continuous sealing for side hot air circulation type PDP, characterized in that the hot air is supplied branched to one side up and down of the chamber (13). in. The method according to claim 1 or 2, The air conditioning plate 15 is fixed to the side plate 14 of the chamber 13 via the fastener 16, and the through hole 15a is drilled in the same way as the side plate 14, and the long hole 15b is formed at a plurality of points. It is further provided, the continuous sealing passage for the side hot air circulation type PDP, characterized in that to adjust the amount of air passing as the air control plate 15 slides relative to the side plate (14).