JP2020201032A - Dryer chamber structure body using organic solvent - Google Patents

Abstract

To provide a dryer chamber structure body using an organic solvent.SOLUTION: The dryer chamber structure body using an organic solvent according to the present invention, comprises a drying chamber of a double layered structure provided with a heating zone disposed on the upper side and a drying zone disposed on the lower side thereof relative to a partition plate, one or more first burst ports disposed on the ceiling of the heating zone, one or more second burst ports each comprising an explosion proof door and disposed on one or more doors each openably/closably disposed on the front face or on the rear face of the drying zone respectively, each of the explosion proof doors being connected to the corresponding door by a hinge so as to be opened by an explosion pressure when explosion occurs in the drying zone, and one or more guide members each disposed on the front face of the corresponding explosion proof door of the second burst port provided on the door to upwardly guide the explosion pressure and flame ejected via the second burst port so as to restrict an amount of opening of the explosion proof door by interfering with the upper part thereof when the explosion proof door is opened.SELECTED DRAWING: Figure 1

Description

The present invention relates to a dryer chamber structure that uses an organic solvent, and in particular, the drying chamber is composed of a multi-layer structure so that hot air in the upper heating zone is supplied to hot air supply ducts provided in the lower drying zone. By supplying to both the left and right sides of the duct, the temperature of the hot air can be made uniform and the drying performance can be improved, and the drying zone and the heating zone are provided with the first and second blast ports to deform the chamber. The present invention relates to a dryer chamber structure using an organic solvent, which can prevent the problem and improve the safety of the operator.

In general, multilayer ceramic capacitors (Multi-Layer Ceramic Capacitors, hereinafter referred to as "MLCCs") are components that temporarily store electric charges, and have recently been made ultra-compact and ultra-high capacity. It is used in a multi-layer structure, has good temperature and frequency characteristics, and is small in size, so it is currently being applied as an important component that requires miniaturization of products.

MLCCs, which require about 250 mobile phones (smartphones are twice as many as ordinary mobile phones), about 300 notebook PCs, and about 700 LCD TVs, will continue to be in high demand. Cost reduction and price competition are accelerating with technological power generation such as miniaturization.
To explain the method for producing such MLCCs in sequence, first, a ceramic powder is prepared (S1). Next, the dielectric powder is batch-processed (Batch) (S2). A molded dielectric sheet is produced from the batch-processed powder (S3), and an electric circuit is printed on the molded dielectric sheet (S4). A plurality of thin dielectric sheets on which an electric circuit is printed are laminated according to the type of product (S5), and then bonded to one plate via crimping (S6). After cutting the ceramic plate, which is still in a soft state, into an appropriate size according to the product (S7), the organic binder and other foreign substances are removed via burnout (S8). After that, the ceramic plate is hardened by heat treatment (S9). When the heat treatment is completed, the external electrode is applied (S10), and then the external electrode is fired (S11). Finally, the entire manufacturing process is completed via the plating process (S12).

At this time, the part that takes the most time in the MLCC manufacturing process is the heat treatment process. The calcination (S8) and firing (S9) steps correspond to heat treatment, and the time required for these two steps corresponds to a level of 25% of the total.

Calcination refers to applying heat to a substance to eliminate volatile components or to eliminate volatile components, and in the MLCC process, it is called a "Binder Burn-Out" process. A point to note during the calcination process is that the MLCC contains internal electrodes such as copper (Cu) and nickel (Ni), but when firing the MLCC made of ceramic material, it is performed in a reducing atmosphere with almost no oxygen. That is what you have to do. This is because when an internal electrode made of a material such as copper (Cu) or nickel (Ni) is oxidized, it cannot function as an electrode.

Examples of the prior art related to the conventional MLCC include "multilayer ceramic capacitor and its manufacturing method" (publication date: October 15, 2018) disclosed in Korean Publication No. 10-2018-113163. However, this is based on a metal powder having an average particle size of 100 nm or less and a standard deviation of the particle size distribution of 1.5 or less on a green sheet containing ceramic powder, and an average particle size of 10 nm or less and a standard particle size distribution. A first step of arranging a pattern of a metal conductive paste containing a ceramic powder having a deviation of 5 or less as a co-material, and a first step of firing a ceramic laminate obtained by laminating a plurality of lamination units obtained by the first step. Including two steps, the thickness of the internal electrode layer obtained by sintering the metal powder in the second step is a, and the extension of the internal electrode layer of the crystal grains of the main component metal of the internal electrode layer. When the length in the direction is b, the abundance ratio of the crystal grains having b / a <1 among the crystal grains contained in the internal electrode layer is 70% or more in the internal electrode layer.

Further, as another prior art related to the conventional MLCC, "Manufacturing method of multilayer ceramic capacitor, ceramic laminate and multilayer ceramic capacitor" disclosed in Korean Publication Patent Publication No. 10-2018-80690 (publication date). : July 12, 2018), which is composed of a plurality of ceramic layers and a plurality of internal electrode layers arranged in the stacking direction, and is sandwiched between the plurality of internal electrode layers and the internal electrode layers. A method for manufacturing a multilayer ceramic capacitor, which comprises a laminate preparation step of preparing a laminate having two or more exposed regions in which both ceramic layers are exposed, and a transfer step of transferring a first conductive paste to the laminate. The laminated body has a substantially rectangular shape having two end faces which are end faces in the longitudinal direction and four faces orthogonal to the end faces, and the exposed region is outward on at least one of the four faces. The first conductive paste is applied to a transfer jig having a protruding portion and having a groove in the transfer step, and the first conductive paste existing in the groove is applied to the surface of the protruding portion. It is characterized by being transferred to.

In this case as well, the conventional MLCC or secondary battery product is dried by a hot air drying method in which the paste is applied and dried using an organic solvent and passed through another coating dryer chamber. FIG. 9 shows a schematic configuration of a coating dryer using this organic solvent.

The conventional coating dryer is internally divided into a drying zone 110 and a heating zone 120 on both left and right sides based on a diaphragm, and a heater and a blower are provided inside the heating zone 120 provided on the right side, and the blower of the conventional coating dryer is provided. Hot air in the heating zone 120 is supplied from the blower motor 200 into the hot air supply ducts 130A and 130B provided above and below in the drying zone, and between the hot air supply ducts 130A and 130B provided above and below. The interior of the is dried while passing a coated MLCC or secondary battery product in the longitudinal direction.

However, due to the structural characteristics of the conventional dryer chamber, the hot air in the heating zone is supplied to the right end of the hot air supply duct in one direction. Therefore, the hot air on one side and the other side of the hot air supply duct is supplied. The disadvantage is that the temperature is non-uniform and the drying uniformity of the MLCC or secondary battery product is reduced.

In addition, a chamber that uses a conventional organic solvent may change to an explosive gas if it is concentrated without being discharged to the outside due to the characteristics of a volatile organic solvent, which causes static electricity and the like. Even if there is a small fire, the explosive gas may cause the dryer to explode.

When the above-mentioned explosion of the dryer occurs, the explosion pressure and the flame are discharged to the outside through the portion of the dryer chamber where the explosion pressure is weak, so that the explosion pressure and the flame are discharged to the outside as described above. Explosive pressure and flame were transmitted to the workers during the work, and there was a risk of accidents for the workers.

To improve this, the upper part of the dryer chamber can be provided with a separate blast port, which is the outlet for the explosion pressure and flame, but it must be applied only to the upper part of the chamber, which is not related to the worker's walking. Not only is there a restriction that it must not be, but the volume in the width direction becomes large due to the restriction that the heating zone and the drying zone of the conventional dryer are configured on both the left and right sides, and there is a restriction on the installation space. When applying a layered chamber, the blast port must be installed in the drying zone above a certain standard, which may not meet the current safety regulations.

In addition, the dust generated when the dryer explodes as described above accumulates on the bottom of the dryer chamber, but there is a drawback that it is difficult to completely clean the dryer due to the structure of the current dryer chamber. The dust remaining in the chamber acts as a factor that deteriorates the quality of the MLCC or secondary battery product that passes through the inside of the dryer chamber.

Korean Publication Patent Gazette No. 10-2018-111363, "Multilayer Ceramic Capacitors and Their Manufacturing Methods" (Publication Date: October 15, 2018) Korean Publication Patent Gazette No. 10-2018-80690 "Manufacturing Method of Multilayer Ceramic Capacitors, Ceramic Laminates and Multilayer Ceramic Capacitors" (Publication Date: July 12, 2018)

The present invention has been made in view of such a problem, and an object of the present invention is to form a dryer chamber having a multi-layer structure to supply hot air in an upper heating zone and supply hot air in a lower drying zone. By supplying it to both the left and right sides of the duct, the temperature of the hot air can be made uniform and the drying performance can be improved, and the drying zone and the heating zone are provided with the first and second blast ports of the chamber. It is an object of the present invention to provide a dryer chamber structure using an organic solvent, which can prevent deformation and improve operator safety.

The present invention for achieving the above object is a multi-layered dryer chamber in which a heating zone is provided on the upper side and a drying zone is provided on the lower side based on a diaphragm; on the ceiling above the heating zone. With at least one first blast port; located on a door that is provided at least one on the front or rear surface of the drying zone and opened and closed so as to be released by the explosion pressure when an explosion occurs in the drying zone. A second blast port with an explosion-proof door hinged to the door; guides the explosion pressure and flame ejected through the second blast door upward and interferes with the top when the explosion-proof door is opened. The guide member is located below the second blast port, including a guide member arranged on the front side of the explosion-proof door of the second blast port provided on the door so as to limit the amount of opening. It is characterized in that it is composed of an extension portion extending in the horizontal direction from the front surface or the rear surface of the drying zone, and an upward guiding portion extending upward from the end portions of the front surface and the side surface of the extension portion.

The first and second hot air blown from the blower provided inside the heating zone are supplied to both the left and right sides of the hot air supply ducts provided above and below in the drying zone. It is characterized by further providing a connecting duct.

The partition plate is characterized in that after the hot air in the heating zone is supplied into the drying zone, a through hole is formed to further circulate in the heating zone.

The hot air in the heating zone is filtered by a filter member and supplied to the drying zone side.

The front surface of the upward guide portion is characterized in that it is formed at an angle inclined upward from the front end portion of the extension portion.

The second blast port is characterized in that it is formed on the rear surface of the drying zone so as to be located further above the intermediate height.

The door installed in front of the drying zone is characterized by further providing a visual window.

The upper surface of the first blast port is characterized in that it is formed so as to be located at the same height as the upper surface of the heating zone.

In the present invention, the dryer chamber is composed of a multi-layer structure, and the hot air in the upper heating zone is passed through the first and second connection ducts to the left and right of the hot air supply duct provided in the lower drying zone. By supplying hot air to both sides, hot air having a uniform temperature can be supplied to the MLCC or the secondary battery product side passing through the inside of the chamber to reduce the product error and have the advantage that the drying performance can be improved. ..

Further, in the present invention, the heating zone of the dryer chamber having a multi-layer structure is provided with a first blast port, and the drying zone is provided with a second blast port, so that an explosion occurs in the drying zone or the heating zone. However, excessive deformation of the dryer chamber can be prevented, and since the guide member is provided on the second blast port side, the explosion pressure and flame in the drying zone can be generated through the second blast port. By making it eject upward through the guide member, there is an advantage that the safety of the operator working around the dryer chamber can be improved.

According to the present invention, the front or rear surface of the drying zone is provided with a door that is opened and closed on both the left and right sides and has a blast opening, so that even if an explosion occurs inside the chamber, the door can be opened. Since the dust accumulated on the bottom surface of the chamber can be easily removed, there is an advantage that deterioration of product quality can be prevented.

It is a perspective view which shows the appearance structure of the dryer chamber structure which uses the organic solvent which concerns on this invention. It is a front sectional view of the dryer chamber structure of this invention. It is a top view of FIG. It is a side view of FIG. It is a front view which shows the dry zone where the 2nd blast opening of this invention was formed. It is a usage state diagram of the 2nd blast opening where the explosion-proof door of this invention is arranged. It is a rear view of the dryer chamber structure which shows the modification of the 2nd blast opening of this invention. It is a side sectional view which shows the 2nd blast opening and the guide member of FIG. It is a block diagram which shows schematic the hot air supply structure of the conventional dryer chamber.

According to the present invention, the dryer chamber is composed of a multi-layer structure, and the hot air in the upper heating zone is supplied to both the left and right sides of the hot air supply duct provided in the lower drying zone, so that the temperature of the hot air is increased. It is possible to improve the drying performance by making it uniform, and it is equipped with the first and second blast ports to prevent excessive deformation of the dryer chamber when an explosion occurs, improving the safety of the operator. To be able to let.

Hereinafter, the dryer chamber structure using the organic solvent according to the present invention will be described in more detail by the detailed description of the embodiment with reference to the drawings.

In explaining the present invention, if it is determined that a specific description of the related known technology or configuration may unnecessarily obscure the gist of the present invention, detailed description thereof will be omitted. Will be done. The terms described later are terms defined in consideration of the functions in the present invention, and may change depending on the intention or custom of the user. Therefore, that definition should be made on the basis of the content throughout this specification. Also, "including" a component means that the other component may be further included, rather than excluding the other component, unless otherwise stated.

The dryer chamber structure using the organic solvent according to the present invention will be described with reference to FIGS. 1 to 8, and the heating zone 120 is provided on the upper side and the drying zone 110 is provided on the lower side with reference to the diaphragm 115. A multi-layered dryer chamber 100; at least one first explosion port 500 provided on the ceiling above the heating zone 120; at least one door opened and closed on the front or rear surface of the drying zone 110. A second blast port 550 with an explosion-proof door 555 located on the 112 and hinged to the door 112 so as to be opened by the explosion pressure when an explosion occurs in the drying zone 110; the second blast port 550. Explosion-proof of the second blast port 550 provided in the door 112 so as to guide the explosion pressure and flame ejected through the door upward and interfere with the upper part when the explosion-proof door 555 is opened to limit the amount of opening. Includes a guide member 600 located on the front side of the door 555;

Referring to FIG. 1, in the dryer chamber 100 of the present invention, a plurality of first blast ports 500 are formed in the upper part of the ceiling, and at least one of the front or rear surfaces has doors that can be opened and closed on both the left and right sides. 112 is arranged.

By opening the door 112 so that the inside and the outside of the drying zone 110 having a multi-layer structure communicate with each other during the opening operation, the convenience of cleaning work or maintenance work can be provided.

Then, even if an explosion occurs in the dryer chamber, the door 112 can be opened to easily remove the dust accumulated on the bottom surface of the chamber to the outside.

Further, the door 112 can form a visual window so that the work progress status in the drying zone 110 can be recognized from the outside.

The second blast port 550 is arranged at a door 112 installed on the front surface or the rear surface of the drying zone 110, and is hinged to the door 112 so as to be opened by an explosion pressure when an explosion occurs in the drying zone 110. It is equipped with an explosion-proof door 555.

A guide member 600 is provided in the front direction of the explosion-proof door 555 to protect the operator from the opening operation of the explosion-proof door 555 when an explosion occurs in the drying zone 110 and to guide the explosion pressure and flame upward.

The upper surface of the first blast port 500 is formed so as to be located at the same height as the upper surface of the heating zone 120, so that the structure protruding from the upper surface of the dryer chamber 100 is minimized and installed. It has the advantage of being able to reduce space constraints.

Referring to FIG. 2, the dryer chamber 100 of the present invention has a multi-layer structure in which a heating zone 120 is provided on the upper side and a drying zone 110 is provided on the lower side with reference to the diaphragm 115.

Further, the partition plate 115 has a structure in which a through hole (not shown) is provided so that hot air in the heating zone 120 is supplied into the drying zone 110 and then circulates in the heating zone 120. ..

The heating zone 120 is provided with a heater 300 (heat exchanger) inside, a blower including a blower motor 200 and a blower fan 250, and after filtering the hot air in the heating zone 120, the drying zone The filter member 400 is provided so as to supply to the 110 side.

For the filter member 400, for example, a HEPA filter can be adopted.

Further, the drying zone 110 is internally arranged so as to be separated from each other in the longitudinal direction, and is a nozzle for injecting hot air blown from the blower fan 250 from the upper side and the lower side (not shown). ) Are formed in the hot air supply ducts 130A and 130B.

The hot air supply ducts 130A and 130B have a structure that is elongated in the length direction along the transfer direction on the side of the MLCC or the secondary battery product that passes through the drying zone 110 of the dryer chamber 100 in the length direction.

As a result, the hot air supply ducts 130A and 130B pass through the filter member 400 provided on one side of the heating zone 120 and are supplied from one side (right side) of the heating zone 120 through the separator plate 115. The coating liquid adhering to the surface of the MLCC or the secondary battery product is dried by ejecting the hot air upward and downward through the respective nozzles while transferring the hot air in the length direction (from right to left).

With reference to FIGS. 3 and 4, the hot air blown from the blower provided inside the heating zone 120 is sent to the left and right of the hot air supply ducts 130A and 130B provided above and below the drying zone 110. Further, first and second connection ducts 140 and 150 provided so as to supply to both sides are provided.

More specifically, the first connection duct 140 is connected so as to supply hot air in the heating zone 120 in the left and right side directions of the upper hot air supply duct 130A, and the second connection duct 150 is said. It has a structure connected so as to supply the hot air in the heating zone 120 to the left and right sides of the lower hot air supply duct 130B.

As a result, the hot air supply ducts 130A and 130B on the upper and lower sides are supplied with hot air in the heating zone 120 in both the left and right directions, and the temperature deviation in each width direction portion can be reduced. It is possible to provide drying uniformity for each part of the next battery product.

Referring to FIG. 4, the first explosion port 500 is provided in a portion on one side and the other side of the heating zone 120, and is in the heating zone 120 with reference to a heater 300 and a blower motor 200 provided in the middle. When an explosion occurs on one side and the other side, the explosion pressure and flame can be guided vertically upward through both side parts on one side and the other side.

The explosion-proof door 555 is maintained in a closed state so as to be flush with the outer surface of the door 112 in normal times, but when an explosion occurs in the drying zone 110, the door is affected by the explosion pressure. The second blast port 550 is opened while rotating from 112, and the explosive pressure and flame in the drying zone 110 are released to the outside of the dryer chamber 100.

Further, the present invention is arranged on the front side of the explosion-proof door 555 of the second blast port 550, so that when an explosion occurs in the drying zone 110 of the dryer chamber 100, the second blast port It is also preferred to further include a guide member 600 that guides the explosive pressure and flame upwards in the vertical direction via the 550.

The guide member 600 is located below the second blast port 550, and has an extension portion 610 extending horizontally from the front surface or the rear surface of the drying zone 110 and an upper portion extending upward from the end portion of the extension portion 610. It is composed of an induction unit 620.

The upward guide portion 620 can extend vertically from the end of the extension portion 610 or extend at an angle inclined upward.

As a result, an explosion mainly occurs in the drying zone 110 where the organic solvent is used, and when an explosion occurs in the drying zone 110, the flame and the explosion pressure pass through the second blast port 550. After that, the extension portion 610 and the upward guidance portion 620 are guided upward along the shape, and an accident of an operator during walking can be prevented.

With reference to FIGS. 7 and 8 showing a modification of the second blast port 550 of the present invention, the second blast port 550 is arranged in front of the drying zone 110 and described above, as described above. It may also be placed on the back surface of the dry zone 110.

Further, the second blast port 550 is formed on the rear surface of the drying zone 110 so as to be located further above the intermediate height.

As a result, when the volatile gas of the organic solvent is concentrated in the drying zone 110 and an explosion occurs, it is discharged to the outside through the second blast port 550 formed in the upper part of the rear surface of the drying zone 110. , The flame and the explosion pressure can be easily discharged to the outside when the explosion occurs by rising through the guide member 600.

The second blast port 550 formed on the rear surface of the drying zone 110 may be arranged on the door 112 without the explosion-proof door 555, when a mesh net and an aluminum sheet are installed inside and the explosion pressure is transmitted. It has a structure in which the inside and the outside of the drying zone 110 are opened so as to communicate with each other.

On the other hand, the second blast port 550 of the present invention may be arranged only on the rear surface of the drying zone 110, and a door 112 having a visual window may be installed on the front surface of the drying zone 110.

Therefore, in the present invention, the dryer chamber 100 is configured with a multi-layer structure, and hot air in the upper heating zone is provided in the lower drying zone 110 via the first and second connection ducts 140 and 150. By supplying hot air to both the left and right sides of the hot air supply ducts 130A and 130B, hot air of uniform temperature can be supplied to the MLCC or secondary battery product side that passes through the inside of the chamber to reduce product error and dry performance. Has the advantage of being able to improve.

Further, in the present invention, the heating zone 120 having a multi-layer structure is provided with the first blast port 500, and the drying zone 110 is provided with the second blast port 550, so that the explosion occurs in the drying zone 110 or the heating zone 120. Even if it occurs, it is possible to prevent excessive deformation of the dryer chamber 100, and since the guide member 600 is provided on the side of the second blast port 550, the drying zone 110 is provided through the second blast port 550. The advantage is that the safety of the operator working around the dryer chamber 100 can be improved by allowing the explosive pressure and flame inside to be ejected upward through the guide member 600. Has.

The present invention is provided on the front surface or the rear surface of the drying zone 110 with a door 112 which is opened and closed on both the left and right sides and has a blast port. Therefore, in the structure of the conventional dryer chamber, it is not possible to completely remove the dust accumulated on the bottom surface in the chamber when an explosion occurs, and the quality of the product passing through the drying zone 110 is deteriorated. Then, even if an explosion occurs inside the chamber, the door 112 can be opened to both the left and right sides to easily remove the dust accumulated on the bottom surface of the chamber, thus preventing the deterioration of product quality. can do.

As described above, although the specific embodiment has been described in the detailed description of the present invention, it goes without saying that various modifications can be carried out without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the embodiments described above, and should be defined not only by the claims described later but also by those equivalent to the claims. ..

That is, the present invention described above is not limited to the specific preferred embodiment described above, and has ordinary knowledge in the technical field to which the invention belongs without departing from the gist of the claimed invention within the scope of the claims. Not only can any person carry out various modifications, but those changes are also within the scope of the claims.

100 Dryer chamber 110 Drying zone 112 Door 115 Separation plate 120 Heating zone 130A, 130B Hot air supply duct 140, 150 1st and 2nd connection duct 200 Blower motor 250 Blower fan 300 Heater 400 Filter member 500 1st explosion port 550 2nd Explosion port 555 Explosion-proof door 600 Guide member 610 Extension part 620 Upward guidance part

Claims (8)

With a multi-layered dryer chamber with a heating zone on the upper side and a drying zone on the lower side based on the separator plate;
With at least one first blast on the ceiling above the heating zone;
Provided is an explosion-proof door that is located on at least one door that is provided on the front surface or the rear surface of the drying zone and is opened and closed, and is hinged to the door so as to be opened by an explosion pressure when an explosion occurs in the drying zone. With the second explosion port;
A second blast port provided in the door so as to guide the explosion pressure and flame ejected through the second blast port upward and interfere with the upper part when the explosion-proof door is opened to limit the opening amount. With a guide member located on the front side of the explosion-proof door;
The guide member is located below the second blast port and has an extension portion extending horizontally from the front surface or the rear surface of the drying zone and an upward guide extending upward from the front and side end portions of the extension portion. A dryer chamber structure using an organic solvent, which is characterized by being composed of a part and a part. The first and second hot air blown from the blower provided inside the heating zone are supplied to both the left and right sides of the hot air supply ducts provided above and below in the drying zone. The dryer chamber structure using the organic solvent according to claim 1, further comprising a connecting duct. The organic solvent according to claim 1, wherein the partition plate is characterized in that after the hot air in the heating zone is supplied into the drying zone, a through hole is formed to further circulate in the heating zone. Dryer chamber structure. The dryer chamber structure using the organic solvent according to claim 1, wherein the hot air in the heating zone is filtered by a filter member and supplied to the drying zone side. The dryer chamber structure using the organic solvent according to claim 1, wherein the front surface of the upward guide portion is formed at an angle inclined upward from the front end portion of the extension portion. The dryer chamber structure using the organic solvent according to claim 1, wherein the upper surface of the first blast port is formed so as to be located at the same height as the upper surface of the heating zone. .. The dryer chamber structure using the organic solvent according to claim 1, wherein the door installed in front of the drying zone is further provided with a visual window. The dryer chamber structure using the organic solvent according to claim 1, wherein the second blast port is formed on the rear surface of the heating zone so as to be located further above the intermediate height.