JP2014020697A - Drying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drying device capable of simplifying a piping facility and improved in energy efficiency.SOLUTION: The drying device 100 dries a workpiece W stored in a furnace by hot-air heating or radiation heating. The drying device 100 includes a furnace body 110, an air-supply duct 121, first-fourth supply air feeding ducts 122, 123A-123C, 124, 125, and a first blower 130A. The furnace body 110 is sectioned into a treatment chamber 101 and a ventilating chamber 102. The air-supply duct 121 is disposed in the ventilating chamber 102 while penetrating through the furnace body 110. The first-fourth supply air feeding ducts 122, 123A-123C, 124, 125, are coupled to the air-supply duct 121 and an exhaust port 1251 is opened in the treatment chamber 101. The first blower 130A feeds part of the air circulating through the air-supply duct 121, to the first-fourth supply air feeding ducts 122, 123A-123C, 124, 125.

Description

  The present invention relates to a drying apparatus that dries a workpiece housed in a furnace by hot air heating or radiation heating.

  In Patent Document 1, a coating liquid such as an adhesive, a release agent, an adhesive, and various treatment agents is applied to one surface of a continuous sheet (hereinafter referred to as a workpiece) such as a film or foil. Then, a drying device (coating device) is disclosed in which a coating film is formed by passing a plurality of heating furnaces sequentially and drying the coating liquid applied by blowing hot air in the heating furnace.

JP 2010-2222090 A

  In Patent Document 1, a plurality of heating furnaces share an air supply duct for sending air to each heating furnace. As shown in FIG. 2 of Patent Document 1, since this air supply duct is piped outside the furnace body of the heating furnace, a large-scale piping facility is required on the user side, and the equipment cost increases. Increasing the size of the facility is a problem. Further, there is a problem in that wasteful heat is dissipated from the air supply duct, resulting in poor energy efficiency.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a drying apparatus capable of simplifying piping equipment and improving energy efficiency.

  A drying apparatus dries the workpiece | work accommodated in a furnace by hot air heating or radiation heating. In the present invention, such a drying apparatus includes a furnace body, an air supply duct, an air supply duct, and a first blower. The furnace body is divided into a processing chamber and an air supply chamber. The air supply duct passes through the furnace body and is disposed in the air supply chamber. The supply duct for supply air is connected to the supply duct, and an exhaust port is opened in the processing chamber. The first blower feeds a part of the air flowing through the air supply duct to the air supply duct.

  According to this configuration, the interior of the furnace body is partitioned into a processing chamber and an air supply chamber, and the air supply duct is piped through the furnace body inside the air supply chamber. Therefore, since it is not necessary to pipe the air supply duct outside the furnace body of the drying device, simplification of the piping equipment is realized. Further, since the air supply duct is disposed inside the furnace body covered with the heat insulating material, heat dissipation from the air supply duct is suppressed, and energy efficiency can be improved.

  When the air hole is provided in the partition wall that divides the processing chamber and the air supply chamber, the drying device of the present invention further includes an exhaust duct, an exhaust feed duct, and a second blower. The exhaust duct passes through the furnace body and is piped to the air supply chamber. The exhaust duct is connected to the exhaust duct with an inlet opening in the air supply chamber. The second blower feeds air discharged from the processing chamber to the air supply chamber through the vent hole through the exhaust supply duct to the exhaust duct.

  According to this configuration, the exhaust duct is piped through the furnace body inside the air supply chamber. Therefore, since it is not necessary to pipe the exhaust duct outside the furnace body of the drying device, simplification of the piping equipment is realized.

  An air volume adjusting plate for adjusting the opening area of the vent hole may be slidably disposed on the partition wall. According to this configuration, it is possible to adjust the air volume of the air passing through the vent hole by adjusting the opening area of the vent hole by shifting the air volume adjusting plate.

  Moreover, the conveyance apparatus of this invention has a conveyance roller and a hot air nozzle which are arrange | positioned in a process chamber. The conveyance roller conveys a long sheet-shaped workpiece. The hot air nozzle is disposed immediately above the conveying roller and blows hot air toward the workpiece.

  Specifically, a hot air box capable of jumping up the other end side from the one end side in the axial direction of the transport roller is disposed above the transport roller, and a plurality of hot air nozzles are provided in the hot air box. According to this, a plurality of hot air nozzles can be easily retracted from the conveying roller by jumping up a hot air box that has a certain size and is easy to hold.

  According to the present invention, it is possible to provide a drying apparatus in which piping equipment can be simplified and energy efficiency is improved.

It is a sectional side view which shows schematic structure of the drying apparatus which concerns on one Embodiment of this invention. FIG. 2 is a cross-sectional view taken along line II-II in FIG. It is a perspective view explaining the arrangement | positioning relationship of the various ducts piped by the said drying apparatus. It is a perspective view which shows the opening area adjustment mechanism of a vent hole. It is an enlarged view of the processing chamber in FIG. It is a figure which shows an example of the usage condition of the drying apparatus of this invention.

  Below, the structure of the drying apparatus which concerns on embodiment of this invention is demonstrated with reference to FIGS. The drying apparatus 100 according to the present embodiment blows the surface of the workpiece W from the hot air nozzle 142 while conveying a long thin sheet (hereinafter referred to as a workpiece) W such as a continuous film or foil by the conveyance roller 150. It is dried by hot air. As an example of the workpiece W, an electrode sheet used for a lithium ion battery can be cited.

  As shown in FIGS. 1 and 2, the drying apparatus 100 of the present embodiment includes a furnace body 110, an air supply duct 121, a first air supply duct 122, and second air supply ducts 123 </ b> A to 123 </ b> C. , Third supply duct 124, fourth supply duct 125, exhaust duct 126, exhaust supply duct 127, first blower 130A, second blower 130B, nozzle units 140A, 140B, 140C, A plurality (six in this embodiment) of conveyance rollers 150 are provided.

  As shown in FIG. 2, the interior of the furnace body 110 is partitioned into three rooms up and down by partition walls 104 and 105. The upper stage is a processing chamber 101, the middle stage is an air supply chamber 102, and the lower stage is a machine room 103. ing. A heat insulating material (not shown) is provided on the inner surface of the metal furnace body 110 having heat resistance for heat insulation.

  In the processing chamber 101, nozzle units 140 </ b> A, 140 </ b> B, 140 </ b> C, a fourth air supply duct 125, and a conveyance roller 150 are disposed. The processing chamber 101 includes an openable lid 111. Specifically, as shown in FIG. 2, the lid 111 can be flipped up (rotated) around a hinge 116 attached to the top surface of the furnace body 110. The side of 101 is opened wide and opened.

  In the air supply chamber 102, an air supply duct 121, first to fourth air supply ducts 122, 123A to 123C, 124, 125, an exhaust duct 126, and an exhaust supply duct 127 are piped.

  As shown in FIG. 1, the air supply duct 121 and the exhaust duct 126 are disposed through the furnace body 110 in the conveying direction of the workpiece W (the left-right direction in FIG. 1). The cross-sectional shapes of the air supply duct 121 and the exhaust duct 126 are not limited, but as an example, a flat rectangle can be adopted as shown in FIG. According to such a shape, an increase in the dimension in the height direction of the duct can be suppressed and an air supply amount can be secured, which contributes to space saving of the piping space.

  The air supply duct 121 is connected to a hot air supply device 300 installed outside the furnace body 110. The hot air supply device 300 includes at least a heater 50, a blower 60, and a duct 70. The hot air supply device 300 sends the air (hot air) heated by the heater 50 to the air supply duct 121 through the duct 70 by the blower 60.

  The exhaust duct 126 is connected to a hot air exhaust device 400 installed outside the furnace body 110. The hot air discharge device 400 includes at least a blower 80 and a duct 90. The hot air discharge device 400 discharges hot air discharged to the air supply chamber 102 after being supplied to the processing chamber 101 to the outside of the device through the exhaust duct 126.

  The air supply duct 121 and the first to fourth air supply ducts 122, 123 </ b> A to 123 </ b> C, 124, 125 are disposed below the processing chamber 101. The fourth air supply duct 125 is disposed on one end side in the axial direction of the transport roller 150 (a direction orthogonal to the transport direction of the workpiece W) and constitutes the back side surface of the processing chamber 101.

  The first air supply duct 122 extends in the conveyance direction of the workpiece W in parallel with the air supply duct 121 and is disposed horizontally. The second air supply feeding ducts 123A to 123C constituted by three ducts are arranged vertically. The downstream portions of the second air supply feeding ducts 123A to 123C are horizontally expanded and expanded.

  The second air supply ducts 123 </ b> A to 123 </ b> C are connected to the body portions of the first and third air supply ducts 122 and 124. A filter 160 that removes dust from hot air is provided at a connection portion between the second supply ducts 123 </ b> A to 123 </ b> C and the third supply duct 124. In the present embodiment, a HEPA filter is used as an example of the filter 160.

  The third supply air supply duct 124 is a duct that connects the second supply air supply ducts 123 </ b> A to 123 </ b> C and the fourth supply air supply duct 125 provided at different heights. As shown in FIG. 3, the third air supply duct 124 is defined inside the air supply duct 121 and can be piped in a space-saving manner.

  As shown in FIG. 2, the fourth air supply duct 125 is connected to the top surface of the third air supply duct 124, which is common to the top surface of the air supply duct 121. Established.

  The flow path of the fourth supply duct 125 is narrower than that of the third supply duct 124 and is provided so as to stand up from the top surface of the third supply duct 124.

  An exhaust port 1211 is opened at one end (right end in FIG. 1) of the side wall of the air supply duct 121. Although the shape of the exhaust port 1211 is not ask | required, circular is employ | adopted as an example. An intake port 1221 is opened at one end portion (right end portion in FIG. 1) of the top surface of the first air supply feeding duct 122. Although the shape of the inlet 1221 is not ask | required, circular is employ | adopted as an example. A flexible duct 128 is provided between the exhaust port 1211 and the intake port 1221, and the supply air duct 121 and the first supply air supply duct 122 are connected via the flexible duct 128.

  A first air blower 130 </ b> A is provided below the air inlet 1221 of the first air supply duct 122. The first blower 130 </ b> A has a blowing capacity (air volume) of a part of hot air flowing through the air supply duct 121 through the flexible duct 128 to the first to fourth air supply ducts 122, 123 </ b> A to 123 </ b> C, 124, It has sufficient capacity to feed the nozzle units 140 </ b> A to 140 </ b> C through 125 and blow out from the hot air nozzle 142. In the present embodiment, a centrifugal fan is used as an example of the first blower 130A.

  An exhaust feed duct 127 arranged horizontally is connected to the body portion of the exhaust duct 126. An intake port 1271 is opened at one end of the top surface of the exhaust feed duct 127. A second blower 130 </ b> B is provided below the intake port 1271. As shown in FIGS. 2 and 5, a slit-like air hole 1041 is opened in the partition wall 104 that separates the processing chamber 101 and the air supply chamber 102.

  As shown in FIG. 5, an air volume adjusting plate 106 having a slit-like window 1061 that opens in the same area as the vent hole 1041 may be slidably disposed on the partition wall 104 over the vent hole 1041. According to this configuration, it is possible to adjust the opening area of the vent hole 1041 by shifting the air volume adjusting plate 106 and adjust the air volume of the hot air passing through the vent hole 1041.

  The hot air supplied to the processing chamber 101 eventually passes through the vent hole 1041 and is discharged to the air supply chamber 102, and is taken into the exhaust supply duct 127 from the intake port 1271 by driving the second blower 130B. It is introduced into the duct 126 and discharged outside the apparatus.

  As shown in FIG. 1, the plurality of transport rollers 150 are arranged horizontally at equal intervals. As shown in FIG. 4, a pair of frame plates 113 </ b> A and 113 </ b> B is erected on the partition wall 104, which is the bottom surface of the processing chamber 101, so as to face in a direction orthogonal to the conveyance direction of the workpiece W. Each transport roller 150 is supported by these frame plates 113A and 113B so as to be rotatable about its axis.

  Although illustration is omitted, the workpiece W is wound around a winding roller and a feeding roller arranged outside the furnace body 110, and the workpiece W is fed out by rotating the winding roller. It is conveyed on the conveying roller 150 while being continuously sent out from the roller.

  Each nozzle unit 140 </ b> A to 140 </ b> C is disposed over the two transport rollers 150. The nozzle units 140 </ b> A to 140 </ b> C are respectively provided at upstream, midstream, and downstream positions in the conveyance direction of the workpiece W. As shown in FIG. 4, the nozzle units 140 </ b> A to 140 </ b> C include a hot air box 141 and a hot air nozzle 142.

  The hot air box 141 has a rectangular parallelepiped shape that is long in the conveyance direction of the workpiece W. The hot air box 141 is provided at the top surface thereof so as to be rotatable using a hinge 115 attached to the back side surface of the processing chamber 101. As a result, the hot air box 141 can be flipped up on the other end side from the axial direction one end side (upper left in the figure) of the transport roller 150. Further, the hot air box 141 can be detached from the processing chamber 101.

  As shown in FIG. 4, the hot air box 141 has a first tube port 1413 protruding from one end side surface in the axial direction of the transport roller 150. A suction port 1411 is opened at the protruding end of the first tube port 1413. The first tube port 1413 has a long shape in the longitudinal direction of the hot air box 141 (the conveyance direction of the workpiece W) so that hot air can be taken into the hot air box 141 efficiently.

  As shown in FIG. 4, an exhaust port 1251 that opens larger than the suction port 1411 at the protruding end of the first tube port 1413 is formed in the fourth feed duct 125 at a location facing the first tube port 1413. Has been. A sheet-like packing 129 that protrudes into the exhaust port 1251 is attached to the entire periphery of the exhaust port 1251.

  In order to blow air from the fourth supply duct 125 to the hot air box 141, it is necessary to connect the exhaust port 1251 of the fourth supply duct 125 and the suction port 1411 of the hot air box 141 in an airtight manner. This connection is realized by the protruding end of the protrusion 1413 abutting against the packing 129 as shown in the figure. As a result, the suction port 1411 can be easily separated from the exhaust port 125 simply by jumping up the hot air box 141.

  The packing 129 can be formed of various rubbers and resins. The material of the packing 129 is selected according to the environment to which the packing 129 is exposed according to the conditions for using the drying device 100. In particular, it is preferably formed of fluororubber, silicone rubber or fluororesin having excellent heat resistance.

  The packing 129 is slightly bent toward the fourth air supply duct 125 when the protruding end of the first tube port 1413 is pressed against the packing 129, but the hot air sent from the fourth air supply duct 125 Since the inside of the fourth air supply duct 125 becomes a positive pressure as compared with the hot air box 141, a force in a direction to counteract the bending acts, and the airtightness of the connecting portion is maintained during the operation of the drying apparatus 100. .

  On the lower surface of the hot air box 141, two second cylindrical ports 1412 having a rectangular parallelepiped shape that is long in the axial direction of the conveying roller 150 are provided so as to be aligned in the conveying direction of the workpiece W. The second tube port 1412 is located immediately above the transport roller 150.

  The hot air nozzle 142 has a substantially rectangular parallelepiped shape having a size corresponding to the second tube port 1412, and a lower portion of a surface orthogonal to the conveyance direction of the workpiece W is tapered. The hot air nozzle 142 is attached to the second tube port 1412 of the hot air box 141 using bolts and nuts (not shown).

  A suction port 1421 is opened on the top surface of the hot air nozzle 142. A slit-like discharge port 1422 extending in the axial direction of the conveying roller 150 is formed at the lower end of the hot air nozzle 142 (that is, the tip of the tapered portion). The hot air nozzle 142 takes in the hot air introduced into the hot air box 141 from the suction port 1421 and blows it out from the discharge port 1422 toward the work W. With this hot air, the workpiece W conveyed by the conveying roller 150 can be dried.

  In the drying apparatus 100 of the present invention, the interior of the furnace body 110 is partitioned into a processing chamber 101 and an air supply chamber 102, and an air supply duct 121 and an exhaust duct 126 penetrate the furnace body 110 inside the air supply chamber 102. It is plumbed. Therefore, since it is not necessary to pipe the air supply duct and the exhaust duct outside the furnace body of the drying device, the piping facility can be simplified. Moreover, since the air supply duct 121 is arrange | positioned inside the furnace body 110 covered with the heat insulating material, dissipation of the heat from the air supply duct 121 is suppressed, and energy efficiency can be improved.

  In addition, since the basic furnace body configuration is shared and the heating unit is subdivided into unit types (nozzle units 140A to 140C), replacement of the nozzle unit and change of the heating method (between the hot air heating method and the radiant heating method) Change) is also easy.

  As shown in FIG. 6, the drying apparatus according to the present embodiment can be used by connecting a plurality of the drying apparatuses in series. A plurality of drying apparatuses are aligned in the conveyance direction of the workpiece W, and the two adjacent drying apparatuses (in the figure, drying apparatuses 100A and 100B) are connected to each other by an air supply duct 121 and an exhaust duct 126 protruding from the furnace body 110. The open ends that face each other are connected using, for example, flexible ducts 201 and 202.

  Accordingly, one air supply duct and one exhaust duct are communicated with each other in the apparatus arrangement direction for a plurality of drying apparatuses.

  In the above-described embodiment, the drying apparatus adopting the hot air heating method has been described. However, the present invention can also be applied to a drying apparatus adopting the radiation heating method.

  The above description of the embodiment is to be considered in all respects as illustrative and not restrictive. The scope of the present invention is shown not by the above-described embodiments but by the claims. Furthermore, the scope of the present invention is intended to include all modifications within the meaning and scope equivalent to the claims.

W ... Work 100, 100A, 100B ... Drying apparatus 101 ... Processing chamber 102 ... Air supply chamber 103 ... Machine chamber 104, 105 ... Partition 1041 ... Vent 106 ... Air volume adjusting plate 110 ... Furnace body 121 ... Air supply duct 122 ... No. 1 supply duct 123A-123C ... 2nd supply duct 124 ... 3rd supply duct 125 ... 4th supply duct 126 ... exhaust duct 127 ... exhaust supply duct 130A ... first blower 130B ... second blowers 140A, 140B, 140C ... nozzle unit 141 ... hot air box 142 ... hot air nozzle 150 ... conveying roller 300 ... hot air supply device 400 ... hot air discharge device

Claims (5)

A drying device for drying a work housed in a furnace by hot air heating or radiation heating,
A furnace body partitioned into a processing chamber and an air supply chamber;
An air supply duct that passes through the furnace body and is piped to the air supply chamber;
An air supply duct that is connected to the air supply duct and has an exhaust opening in the processing chamber;
A first blower for feeding a part of the air flowing through the air supply duct into the processing chamber through the air supply duct;
A drying apparatus comprising: A vent hole is provided in a partition wall that divides the processing chamber and the air supply chamber,
An exhaust duct that passes through the furnace body and is piped to the air supply chamber;
An exhaust feed duct connected to the exhaust duct, wherein an intake port is opened in the air supply chamber;
A second blower for feeding air discharged from the processing chamber to the air supply chamber through the vent hole through the exhaust supply duct to the exhaust duct;
The drying apparatus according to claim 1, further comprising:   The drying apparatus according to claim 1 or 2, wherein an air volume adjusting plate for adjusting an opening area of the vent hole is slidably disposed on the partition wall. A transport roller disposed in the processing chamber for transporting the long sheet-shaped workpiece;
A hot air nozzle that is disposed directly above the conveying roller and blows hot air toward the workpiece;
The drying apparatus according to any one of claims 1 to 3.   The drying apparatus according to claim 4, further comprising a hot air box detachably disposed above the conveying roller, wherein the hot air box is provided with a plurality of the hot air nozzles.

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