KR200210327Y1 - Industrial furnace for gas exausting process in manufacturing process of plasma display panel - Google Patents

Abstract

The present invention relates to an exhaust path used in a process of exhausting a PDP and simultaneously filling a plasma gas into the PDP, and in particular, the inner space of the outer casing 1 insulated and sealed from the inside by the heat insulating material 3 in the horizontal direction. The circulation passage P1, the side circulation passage P2 communicating with the upper circulation passage P1, and the side circulation passage P2 communicate with each other on one side and are supplied from the side circulation passage P2. While passing horizontally, the plurality of PDPs (50) disposed therein are partitioned into a chamber (4) for heating, and the circulation fan (33) passes through these spaces (P1, P2, P3) in turn. Forced circulation of the hot air, but in the chamber (4) is to allow the hot air to pass in the horizontal direction to reduce the temperature deviation in the chamber (4).

Description

Industrial furnace for gas exausting process in manufacturing process of plasma display panel}

The present invention relates to an exhaust path used in a process of evacuating from a plasma display panel (hereinafter abbreviated as PDP) and filling a plasma therein. In particular, the present invention relates to an exhaust path for circulating the hot air in the furnace in a side-flow type to reduce the temperature deviation in the furnace to form a uniform temperature distribution during heating of the display panel.

PDP is a self-developed display device that displays images using plasma discharge. It has excellent image quality like brown and can be manufactured and driven up to 70 inches. Because of these advantages, it is recently applied to wall-mounted or high-definition TV.

The process of discharging PDP internal space air and injecting plasma gas therein is performed in the exhaust passage during the process of manufacturing the PDP. An exhaust passage as shown in Fig. 6 is known as the exhaust passage for the CRT among such exhaust passages.

That is, the cart 101 is installed at the lower part of the furnace and moves through the furnace, and the cart 101 connects the CRTs 105 to the exhaust pipe 103 provided at the upper part, thereby connecting the CRTs 105 inside or outside the furnace. Continuously with In addition, the conventional exhaust passage 100 includes a casing 107 having a fireproof wall 107a installed on an inner wall, and the casing 107 includes an upper plate 111 that forms an upper circulation passage 109 together with a ceiling. ) And the left side of the upper plate 111 The outer diaphragm 117 which consists of the right and left side plates 115 which extends in a vertical downward direction from the right front end, and forms the left and right circulation passage 113 with the side wall of the casing 107, respectively, is provided The hot air inflow passage 121 is formed between adjacent inner diaphragms 119 by opening the lower portion so as to surround the inner diaphragm 119 extending upward from the bottom surface of the casing 107.

An inlet port 111a is formed on the upper plate 111 of the outer plate 117, and the inlet port 111a is connected to a circulation fan 123 installed on the ceiling of the casing 107, and the casing 107 Heaters 125 are disposed on the left and right circulation passages 113 formed between the inner wall and the left and right plates 115, respectively.

And inside the inner plate 119, the CRT 105 supported by the exhaust pipe 103 on the upper surface of the cart 101 is disposed.

In the conventional exhaust passage configured as described above, the air inside the furnace is sucked through the inlet port 111a by the circulation fan 123 and then heated while passing through the left and right circulation passages 113 to open the hot air inflow passage 121. After passing through the inner plate 119 to heat the CRT 105 therein, the circulation fan 123 circulates the path again.

However, the conventional exhaust passage having the above-described structure has a structure in which hot air flows in the inner diaphragm 119 and rises from the bottom upward to heat the CRT, and the exhaust passage casing 107 through which the CRT exhaust pipe 103 passes. The internal heat leaks out through the gap space of the bottom surface of the furnace, and the temperature of the lower part of the furnace becomes lower than the temperature of the upper part, thereby causing a temperature deviation inside the furnace. Since the temperature deviation inside the furnace causes a fatal defect in the CRT exhaust and gas injection process, it is necessary to reduce the temperature variation inside the furnace as much as possible.

The present invention is designed to solve the problems of the conventional exhaust passage, to uniformly distribute the upper and lower temperature distribution of the PDP exhaust chamber inside the exhaust passage, by adjusting the amount of hot air flowing into the upper and lower chamber chamber temperature It is an object of the present invention to provide an exhaust passage for a PDP that prevents defects in the PDP exhaust and gas injection process by reducing the deviation.

The present invention for achieving the above object is to convert the circulating hot air inside the furnace into side drift in the PDP exhaust chamber to reduce the temperature deviation inside the chamber for heating the PDP, and separately install a hot air circulation passage flowing to the upper or lower chamber It is configured to reduce the temperature deviation inside the chamber by controlling the amount of hot air flowing through the respective hot air circulation passages to the chamber up and down with a damper.

1 is a cross-sectional view showing the internal structure of the exhaust passage for the PDP according to the present invention,

FIG. 2 is a cross-sectional view taken along the line 'A-A' of FIG. 1 and illustrates the inside of the chamber in which the PDP is disposed;

3 is a side view of the chamber sidewall shown in the direction 'B' of FIG.

4 is an enlarged view of a portion 'C' of FIG. 1 and illustrates a first damper structure;

FIG. 5 is an enlarged view of a portion 'D' of FIG. 1 and illustrates a second damper structure; FIG.

6 is a schematic cross-sectional view showing a conventional exhaust gas structure for a CRT.

※ Explanation of code about main part of drawing ※

1: outer casing 1a: opening

3: insulation 3a: lower insulation box at the side of the cart

4: chamber

P1: Upper circulation passage

P2: Side circulation passage P2L: Left circulation passage

P2R: Right circulation passage P3: Subspace

5: top plate 7: left side plate

7a: outer perforated plate 7b: inner perforated plate

9: right side plate 9a: outer perforated plate

9b: inner perforated plate

8a: inner pores 8b: outer pores

8b: guide hole

11: upper baffle 11a: hole

13: 1st damper 15: support bracket

16: first damper shaft 17: first damper blade

18: actuator 19: link member

20: information board

21: second damper 23: second damper shaft

24: 2nd damper blade 25: actuator

27: auxiliary heater 29: intake vent

30: suction fan 31: outlet

32: exhaust fan 33: circulation fan

35: heater 50: PDP

51: exhaust pipe

Hereinafter, the exhaust passage for PDP according to the present invention will be described in detail according to the accompanying drawings.

The exhaust passage for PDP according to the present invention, as shown in Figure 1, is provided with an outer casing (1) which is covered with a heat insulating material (3) inside the upper and lower sides and the left and right side walls to insulate and seal the interior.

The lower bottom surface of the outer casing 1 has an opening 1a which is open along the longitudinal direction, and is provided with a chamber 4 immersed into the outer casing 1 at the opening 1a. This chamber 4 consists of a space enclosed by the top plate 5 and the left and right side plates 7, 9 as seen in FIG. 1. As shown in FIG. 3, the left side plate 7 is composed of two inner and outer porous plates 7a and 7b disposed adjacent to each other in parallel to each other, and the outer porous plate 7a has a plurality of pores on the surface thereof. 8a) are perforated and installed in communication with the pores 8b of the adjacent inner perforated plate 7b. The inner perforated plates 7b are coupled to the bolt 10 penetrating through the transverse long holes 7c formed in the fixed outer perforated plates 7a so that these bolts 10 are left and right in the long holes 7c and 9c. By moving to the outer perforated plate (7b) to move the position of the pore pairs (8a, 8b) facing each other to move the position of the air flow into and out of the chamber (4) is adjusted. Although only the detailed configuration of the left side plate 7 is shown in FIG. 3, the structure of the right side plate 9 is the same as that of the left side plate shown in FIG. 3.

And the exhaust passage of the present invention, the upper circulation passage (P1) formed by the upper portion of the upper baffle 11 provided across the upper plate 5 of the chamber 4, and the right side plate of the chamber (4) 9) and the right side wall heat insulating material 3 of the outer casing 1, the upper end of which communicates with the end of the upper circulation passage P1, and the pores 8 of the right side wall 9 of the chamber 4 It is provided with a side piece circulation passage (P2) and the lower space (P3) formed by the upper side baffle 11 and the left side plate 7 of the chamber (4) in communication with the chamber (4) through.

Here, the side circulation passage (P2) is partitioned into a left circulation passage (P2L) and the right circulation passage (P2R) by the guide plate 20 installed in the vertical direction. The upper inlet of the left circulation passage (P2L) and the right circulation passage (P2R) is continuously disposed at the tip of the upper circulation passage (P1), the left circulation passage (P2L) is the lower outlet of the chamber (4) The right side plate 9 is arranged in communication with the upper part of the center, and the right circulation passage P2R is arranged so that the lower outlet is in communication with the lower part of the right side plate 9 of the chamber 4.

The first damper 13 adjusts a flow rate at which the hot air passing through the upper circulation passage P1 flows toward the left circulation passage P2L or the right circulation passage P2R at the upper inlet portion of the side circulation passage P2. ) Is installed. As shown in FIG. 4, the first damper 13 is provided with a first damper shaft 16 at the front end of the support bracket 15 extending from the upper plate of the outer casing 1 into the furnace. The first damper blade 17 is rotatably coupled to the first damper shaft 16, and the first damper blade 17 carries the link member 19 at the distal end of the actuator rod 18 that moves up and down. When the actuator rod 18 is fully extended downward, the first rod (the dotted line in Fig. 4) blocks the inlet from the upper circulation passage (P1) toward the right circulation passage (P2R). 1 damper blade 17 is rotated.

A second damper for controlling the amount of hot air flowing into the central upper portion of the chamber 4 through the left circulation passage (P2L) by partially opening and closing the left circulation passage (P2L) in the left circulation passage (P2L) ( 21).

As shown in FIG. 5, the second damper 21 is provided with a second damper shaft 23 at a height corresponding to approximately near the upper end of the right side plate 9 of the chamber 4 of the guide plate 20. The second damper blade 24 is rotatably coupled to the horizontal position and the vertical position on the second damper shaft 23, and the second damper blade 24 extends in the horizontal direction in the horizontal direction. First position (dotted line display position) that partially closes the cross-sectional area of the left circulation passage (P2L) when the actuator rod 25 is fully extended in the horizontal direction by connecting the link member 26 to the tip of the tip 25. ) Rotates the second damper blade 24. When the actuator rod 25 is fully contracted in the horizontal direction, the actuator rod 25 is rotated to a second position in the vertical direction to completely open the left circulation passage P2L. And an auxiliary heater 27 for heating the bet passing through the left circulation passage (P2L) is installed at the lower end of the left circulation passage (P2L). Therefore, when the temperature of the chamber 4 is lower than that of the upper part due to the influence of the outside air introduced into the gap, and the temperature needs to be increased, when the auxiliary heater 27 is operated, the left circulation passage P2L The bet passing through) is heated and flows into the lower part of the chamber 4 to raise the temperature of the lower part of the chamber 4 relatively.

On the other hand, an inlet 29 is provided on the upper side of the outer casing 1 to guide the outside air into the upper circulation passage P1 inside the furnace, and a lower space P3 is provided on one side wall of the outer casing 1. A bet outlet 31 is provided for guiding the bet to be discharged to the outside. A suction fan 30 for forcibly drawing outside air into the furnace is installed at the inlet end of the inlet port 29, and an exhaust fan for forcibly discharging hot air inside the furnace to the outside at the outlet end of the air outlet 31. 32) is installed. When the suction fan 30 and the exhaust fan 32 require temperature control inside the furnace, the suction fan 30 and the exhaust fan 32 operate in a timely manner according to a control signal of a controller (not shown) to allow intake or exhaust of the inside of the furnace.

And the exhaust path of the present invention, as shown in Figure 1, the circulation fan 33 is installed on the upper side of the outer casing (1) is forced to circulate the atmosphere inside the exhaust passage. A heater 35 for heating air circulating along the upper circulation passage P1 is installed at one upper side of the outer casing 1. Here, reference numeral M denotes a fan motor.

Therefore, the circulation fan 33 forcibly sucks the atmosphere of the lower space P3 through the hole 11a formed in the upper baffle 11 and forcibly blows the air toward the side circulation passage P2 through the upper circulation passage P1. At this time, the atmosphere passing through the upper circulation passage (P1) is heated to a predetermined temperature while passing through the heater 35, and then the left circulation passage (P2L) and / or the right circulation passage (P2R) of the side circulation passage (P2). It passes through the pores 8 of the right side plate 9 of the chamber 4 into the chamber 4. This hot air passes through the pores 8 of the left side plate 7 and then flows into the lower space P3 after heating the PDP 50 while passing through the chamber 4. The hot air introduced into the lower space P3 is forcibly sucked into the upper circulation passage P1 through the hole 11a of the upper baffle 11 by the circulation fan 33 to circulate along the above path. .

That is, as shown in Figure 2, in the exhaust path of the present invention is configured to form a side flow flow method that flows in the horizontal direction when the hot air passes through the chamber (4) to heat the PDP (50). In FIG. 2, the symbol 'ⓧ' indicates a direction in which hot air flows from the front to the rear of the drawing.

The present invention as described above can be avoided by heating the PDP inside the chamber to a uniform temperature by reducing the temperature deviation of the upper and lower chambers so that the hot air flows in the side drift flow method when passing through the chamber. In particular, the present invention can selectively circulate the hot air flowing along the side circulation passage to the upper or lower center of the chamber or adjust the amount of hot air flowing to either of them, so that the bottom insulating material (3) at the bottom of the chamber and the cart side The outside air flows in between the gaps 1a between the lower insulating materials 3a, thereby preventing the temperature of the lower part of the chamber from being lowered relative to the upper temperature, thereby maintaining the entire internal temperature uniformly.

Claims (2)

The outer casing 1 heat-sealed and sealed with the heat insulator 3, the circulation fan 33 for forced circulation of the internal air of the outer casing 1, and the internal air forced for circulation by the circulation fan 33 are heated. In the exhaust passage for PDP having a heater 35 and a chamber 4 which surrounds the PDP 50 disposed inside the outer casing 1 and is heated by hot air forcedly circulated by the circulation fan 33. In The exhaust passage is installed in the longitudinal direction of the outer casing (1), the left and right side plates (7, 9) is formed as a perforated plate so that hot air flows in and out, and a plurality of PDP (50) inside each exhaust pipe A chamber 4 supported by the 51 and substantially upright supported, and an upper surface of the upper baffle 11 and an upper heat insulating material 3 installed above the chamber 4 across the inner space of the outer casing 1. The upper circulation passage (P1) formed by the space between), the side circulation passage (P2) formed between one side plate (9) of the chamber (4) and one side wall of the outer casing (1), and the chamber (4) formed between the other side plate (7) and the other inner wall of the outer casing (1) is partitioned into a lower space (P3) in communication with the upper circulation passage at the upper end, the upper circulation passage ( P1) is in communication with the inlet of the side circulation passage (P2) at one end, the order The fan 33 is installed at one side of the upper circulation passage P1 to substantially pass the internal air into the chamber 4 via the lower space P3, the upper circulation passage P1 and the side piece circulation passage P2. An exhaust path for a PDP, characterized in that forced circulation to pass in the horizontal direction. According to claim 1, wherein the side circulation passage (P2) is disposed in the center of the guide plate 20, divided into a left circulation passage (P2L) and a right circulation passage (P2R), the left circulation passage (P2L) The outlet of is in communication with the central upper end of the right side plate 9 of the chamber 4, the outlet of the right circulation passage (P2R) is approximately in communication with the central lower end of the right side plate 9 of the chamber 4, At the inlet of the side circulation passage (P2) is provided with a first damper 13 for adjusting the flow rate of the hot air flowing through the upper circulation passage (P1) toward the left circulation passage (P2L), the left circulation The exhaust passage for a PDP, characterized in that the auxiliary heater (27) for heating the hot air flowing through the passage (P2L) is provided.