KR101618811B1 - Heat-curing apparatus and thin membrane coating apparatus with the same - Google Patents

Abstract

Disclosed is a thermosetting apparatus for recycling heated air introduced into a curing chamber and recycling it into a curing chamber to reduce energy consumption, and a thin film coating apparatus having the same. The disclosed thermal curing apparatus includes a curing chamber in which an object to be cured is present in an inner space, a first blower blowing freshly introduced air at a room temperature from the outside to the curing chamber, a new blowing air blown by the first blower, A second blower for blowing the recycled air discharged from the hardening chamber back toward the hardening chamber, and a fresh air heated by the heater and recycled air blown by the second blower into the hardening chamber And a mixer for mixing beforehand.

Description

TECHNICAL FIELD [0001] The present invention relates to a heat curing apparatus and a thin film coating apparatus having the same,

The present invention relates to a thermosetting device for curing a cured object such as a coating agent coated on the surface of a film by blowing hot air, and a thin film coating apparatus having the same.

For example, a process of applying a coating agent to the surface of an object such as a film or a sheet and curing the coating agent to produce a product exhibiting a specific property contained in the coating agent is applied in various industries. Examples of a method of curing a curing object such as a coating agent include a method of blowing hot air blowing in accordance with the properties of the object to be cured and a method of curing by irradiating ultraviolet rays (UV).

A conventional thermal curing apparatus used for a method of dry-curing an object to be cured by the hot air includes a blower for forcibly introducing air into a curing chamber from the outside, a heater for heating the introduced air, And an exhaust system for discharging the heated air discharged to the hardening chamber to the outside of the hardening chamber. However, since the conventional thermosetting apparatus needs to heat the room-temperature air flowing from the outside, the energy consumption of the heater is excessive, which causes a rise in the operating cost.

Korean Registered Patent No. 10-1029746

The present invention provides a thermal curing apparatus for reducing energy consumption by recycling heated air introduced into a curing chamber and recycling the air into a curing chamber, and a thin film coating apparatus having the same.

The present invention also provides a thermosetting apparatus capable of recycling heated air without the risk of explosion in a process of thermosetting a cured object such as a volatile coating agent, and a thin film coating apparatus having the same.

According to the present invention, there is provided a curing chamber comprising a curing chamber in which an object to be cured is present in an inner space, a first blower blowing freshly introduced air at a room temperature from the outside toward the curing chamber, a second blower blowing fresh air blown by the first blower A second blower for blowing the recycled air discharged from the hardening chamber back toward the hardening chamber, and a second blower for blowing freshly introduced air heated by the heater and recycled air blown by the second blower, And a mixer for mixing the mixture before the mixture is introduced into the curing chamber.

The heat curing apparatus of the present invention may further comprise a heat exchanger for promoting heat transfer from the recycled air side to the freshly introduced air side before the new charged air reaches the heater.

The thermal curing apparatus of the present invention may further comprise an exhaust unit for discharging a part of the recycled air to the outside before the recycled air is discharged from the curing chamber and reaches the mixer.

The thermal curing apparatus of the present invention may further comprise a volatile substance measuring device for measuring a concentration of volatile substances contained in the air in the curing chamber, wherein when the concentration of the volatile substance exceeds a preset reference value, And may be configured to discharge a part of the recycled air to the outside.

The volatile matter measurement system may be disposed above the object in the curing chamber.

The present invention also relates to a film forming apparatus comprising an unwinding roller for unwinding and feeding a film wound in a roll form, a coating unit for applying a coating agent to one side or both sides of a film continuously fed from the unwinding roller, , And the coating agent is cured while the film to which the coating agent is applied is passed through, and the thermal curing apparatus according to any one of claims 1 to 5, and a film discharged through the thermal curing apparatus in a roll form And a rewinding roller wound around the rewinding roller.

According to the present invention, recycling is performed in which the air heated in the curing channel is mixed with the outside air and is recycled to the curing channel, so that the energy consumption for heating the air can be reduced.

In addition, according to the present invention, after the outside air is heated by a heater, air discharged from the curing channel is mixed with the heated outside air and is put back into the curing channel, so that volatile substances The risk of overheating and exploding is eliminated.

1 is a schematic plan configuration diagram of a thermal curing apparatus according to an embodiment of the present invention.
Fig. 2 is a front view schematically showing the interior of the curing chamber of Fig. 1;
3 is a cross-sectional view schematically illustrating the inside of the heat exchanger of FIG.
4 is a cross-sectional view schematically showing a heat exchanger of a thermal curing apparatus according to another embodiment of the present invention.

Hereinafter, a thermal curing apparatus according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The terminology used herein is a term used to properly express the preferred embodiment of the present invention, which may vary depending on the intention of the user or operator or the custom in the field to which the present invention belongs. Therefore, the definitions of these terms should be based on the contents throughout this specification.

FIG. 1 is a schematic plan view of a thermal curing apparatus according to an embodiment of the present invention, FIG. 2 is a front view schematically showing the inside of the hardening chamber of FIG. 1, and FIG. 3 is a schematic view Fig. 1 and 2, a thermal curing apparatus 10 according to an embodiment of the present invention includes a curing chamber 11, first and second blowers 22 and 36, first and second filters 24 40, a heater 30, a heat exchanger 26, a mixer 32, an exhaust unit 38, a volatile matter measurement unit 18, and a controller 45.

The hardening chamber 11 has an object to be hardened in the inner space. Specifically, a film 1 coated with a coating agent 2 is configured to pass through the inner space of the hardening chamber 11 by being supported by a plurality of support rollers 4 and 5 , Where the coating (2) becomes the object to be cured. However, the coating material (2) is only an example of the object to be cured, and the object to be cured by the present invention is not limited to the coating material (2).

The wall of the curing chamber 11 is formed with an inlet 13 into which hot air heated into the inside and an outlet 16 through which the curing chamber 11 is discharged. The air introduced into the inlet 13 is relatively hotter than the air discharged to the outlet 16 so that the inlet 13 is positioned higher than the object 2 to be cured and the outlet 16 is positioned higher than the object 2 ).

The first blower 22 blows fresh incoming air at room temperature from the outside to the hardening chamber 11. The freshly introduced air flows along the first path 20 from the first blower 22 to the mixer 32 and is indicated by solid arrows in FIG. The heater 30 heats the freshly introduced air, which is blown by the first blower 22, to a higher temperature than room temperature before entering the mixer 32. The heater 30 may generate heat by applying electrical energy such as a heat ray, or may generate heat by injecting chemical energy such as a combustor. The first filter 24 is disposed inside the first path 20 and generates particles of dust or pollutants contained in the freshly introduced air flowing from the first blower 22 to the heater 30, .

The second blower 36 blows the recycled air discharged through the outlet 16 of the hardening chamber 11 back toward the hardening chamber 11. The recycle air flows from the outlet 16 of the curing chamber 11 through the second blower 36 to the mixer 32 along the second path 34 and is indicated by an arrow in dashed line in FIG. . The heat exchanger 26 is provided on the second path 34 between the outlet 16 and the second blower 36 and the fresh air to be blown by the first blower 22 is supplied to the heater 30 Promotes heat transfer from the recycled air side to the new incoming air side before reaching.

1 and 3, the first path 20 extends parallel to the X axis and the second path 34 between the outlet 16 and the second blower 36 is parallel to the Y axis . A heat exchanger 26 is provided at a point where the first path 20 and the second path 34 intersect and the second path 34 surrounds the first path 20 and the first path 20, Is configured to pass through the second path (34). The recirculated air of the room temperature moving in parallel with the direction of the positive (+) direction of the X axis crosses the recirculated air of higher temperature than the recirculated air of the higher temperature, thereby promoting the heat transfer from the recycled air side to the freshly introduced air side. As a result, the temperature of the freshly introduced air is higher than the ambient temperature, and the temperature of the recycled air is lower than the temperature of the outlet 16.

In the mixer 32, fresh air that has been preheated through the heat exchanger 26 and heated to a high temperature by the heater 30 and recycled air blown by the second blower 36 are mixed. The freshly introduced air and the recycled air are mixed at the same temperature in the mixer 32 and are introduced into the hardening chamber 11 through the third path 42 extending from the mixer 32 to the inlet 13. [ The second filter 40 is disposed between the second blower 36 and the mixer 32 of the second path 34 and filters particles such as dust and contaminants contained in the recycle air I will.

The exhaust unit 38 is disposed between the second blower 36 and the mixer 32 of the second path 34 and discharges part of the recycled air to the outside. For example, the exhaust unit 38 can discharge 50% of the recycled air flow rate blown to the second blower 36 to the outside. Volatile substances can be volatilized and discharged while being cured in the curing chamber 11 depending on the kind of the coating agent 2 (see FIG. 2) as an object to be cured, and such volatile substances are included in the recycle air. When a large amount of volatile substances is contained in the recycled air, the mixture is mixed in the mixer 40 and the temperature rises or a spark or the like which unintentionally occurs during the flow along the second path 34 and the third path 42 Explosion may occur by cause. The exhaust unit 38 discharges a part of the recycled air to the outside, thereby reducing the amount of volatile substances contained in the recycled air, thereby eliminating the risk of explosion.

On the other hand, the operation of the exhaust unit 38 may be associated with the measured value of the volatile substance measurement system 18. Referring to FIGS. 1 and 2 together, a volatile substance measurement meter 18 is provided in the hardening chamber 11 and measures the concentration of the volatile substance contained in the air in the hardening chamber 11. Since the density of the volatile material is smaller than the average density of the air, the volatile substance measurement system 18 is disposed at least above the position of the coating material 2, which is the object to be cured, so that the volatile substance can be detected sensitively. Such as the ceiling of the hardening chamber 11, as shown in Fig.

The thermosetting apparatus 10 may be configured to discharge a part of the recycled air to the outside through the exhaust unit 38 when the concentration of the volatile substance measured by the volatile substance measurement meter 18 exceeds a preset reference value. The controller 45 can receive the measured value measured by the volatile substance measuring instrument 18 and operate the exhaust unit 38 so that the recycled air is discharged when the measured value exceeds the reference value.

Alternatively, the controller 45 may control the operation of the exhaust unit 38 step by step in accordance with the volatile substance concentration measurement value of the volatile substance measurement system 18. [ For example, when the measured value exceeds the first reference value, 20% of the flow rate of the recycled air blown by the second blower 36 is discharged to the outside. When the measured value exceeds the second reference value that is larger than the first reference value, 40% of the recycled air flow rate blown by the second blower 36 is discharged to the outside when the measured value exceeds the third reference value which is larger than the second reference value, The exhaust unit 38 can be controlled by the controller 45 so that the% is discharged to the outside. This step-by-step control eliminates the risk of explosion and minimizes the energy consumption by minimizing the amount of recycled air emissions.

The thermal curing apparatus 10 of the present invention reduces the flow rate of freshly introduced air to be introduced into the hardening chamber 11 and recycles exhaust air containing a large amount of heat energy to return to the hardening chamber 11 to save energy .

FIG. 4 is a cross-sectional view schematically showing a heat exchanger of a thermal curing apparatus according to another embodiment of the present invention. Referring to FIG. 4, the heat exchanger 26_2 of the thermal curing apparatus according to another embodiment of the present invention includes: A first path 20_2 extending in parallel and a portion 34_22 of a second path crossing the first path 20_2 from bottom to top. Specifically, the second path includes a first portion 34_21 extending horizontally below the first path 20_2 in the hardening chamber 11 (see Fig. 1), and a second portion 34_21 extending from the first portion 34_21, A second portion 34_22 passing over the first portion 20_2 from below to the second portion 34_22 and extending parallel to the first path 20_2 above the first portion 20_2 and continuing from the second portion 34_22, And a third portion 34_23, which is joined to the first path 20_2 in the second portion 34-2 (see FIG. 1). A second blower 36_2 is provided on the upper side of the heat exchanger 26_2 to supply recycled air (see the one-dot chain line arrow) along the first, second and third portions 34_21, 34_22 and 34_23 of the second path And pressurized to flow.

The second portion 34_22 of the second path in the heat exchanger 26_2 surrounds the first path 20_2 and the first path 20_2 is configured to penetrate the second portion 34_22. The recirculated air of the room temperature moving in parallel with the direction of the positive (+) direction of the X axis crosses the recirculated air of higher temperature than the recirculated air of the higher temperature, thereby promoting the heat transfer from the recycled air side to the freshly introduced air side. On the other hand, since the recycled air has a temperature higher than the temperature of the newly introduced air passing through the first path 20_2 and flows upward due to the light density, the third portion 34_23 of the second path is more likely to flow than the first path 20_2 The blowing energy of the second blower 36_2 can be reduced more than that of the embodiment of Fig. The components of the thermosetting device, which are not specifically shown in FIG. 4 and are not described with reference to FIG. 4, overlap with the components shown in FIGS. 1 and 2, and thus a duplicate description will be omitted.

The present invention includes a thin film coating apparatus having the thermal curing apparatus described with reference to Figs. Here, the thin film is formed by curing the volatile coating agent applied to the film and curing, and includes, for example, an anode, a cathode, a separation membrane, and the like of the secondary battery. The thin film coating apparatus includes an unwinding roller, a coating unit, a thermal curing apparatus, and a rewinding roller. The unwinding roller unwinds and feeds the film wound in a roll form. The coating unit applies a coating agent to one side or both sides of a film continuously fed from the unwinding roller. The coating unit may include, for example, a slot die coater for applying a coating agent to one side of the film, and may be provided with a coating bath on both sides of the film by immersing the film in a bath containing the coating agent It is possible.

The thermal curing apparatus cures the coating while passing through the coated film while passing through the coating unit. The thermal curing apparatus 10 according to the embodiment of the present invention described with reference to Figs. 1 to 4 may be applied. Specifically, while the film to which the coating agent is applied passes through the curing chamber 11 of the thermosetting apparatus 10, the coating agent is cured to form a thin film. The rewinding roller winds the film discharged through the thermosetting device 10 in a roll form.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

10: Thermal curing device 11: Curing chamber
22: first blower 24: first filter
26: heat exchanger 30: heater
32: Mixer 36: Second blower
38: exhaust unit 40: second filter

Claims (6)

A first blower for blowing fresh incoming air at room temperature flowing from the outside;
A heater disposed downstream of the first blower for heating the fresh air to be blown by the first blower;
A mixer disposed downstream of the heater;
A first path communicating the first blower, the heater, and the mixer;
A curing chamber disposed downstream of the mixer, wherein a film coated with a volatile coating agent to be cured is present in an inner space, and a curing chamber for curing the coating;
A second path communicating between the curing chamber, the outlet, and the mixer, the first path crossing the first path between the first blower and the heater and being heat-exchanged;
A second blower disposed on the second path for blowing recycled air discharged from the curing chamber to the mixer;
An exhaust unit for exhausting a part of the recycled air to the outside before the recycled air is discharged from the curing chamber and reaches the mixer; And
And a third path communicating between the mixer and the inlet of the curing chamber,
Wherein a point where the first path and a second path intersect is disposed so that the first path intersects the second path internal space. The method according to claim 1,
Further comprising a heat exchanger for promoting heat transfer from the recycled air side to the freshly introduced air side before the freshly introduced air reaches the heater. delete The method of claim 3,
The thermosetting apparatus may further include a volatile substance measurement unit for measuring a concentration of volatile substances contained in the air in the curing chamber,
And to discharge a part of the recycled air to the outside through the exhaust unit when the concentration of the volatile substance exceeds a preset reference value. 5. The method of claim 4,
Wherein the volatile substance measurement system is disposed above the object in the curing chamber. An unwinding roller for unrolling and feeding the film wound in a roll form;
A coating unit for applying a coating agent to one side or both sides of a film continuously fed from the unwinding roller;
The thermal curing apparatus according to any one of claims 1 to 5, wherein the coating agent cures while the film to which the coating agent is applied passes through the film. And
And a rewinding roller for winding the film discharged through the thermosetting device in a roll form.

Images