JPH04227015A - Method and apparatus for preparing deodorizing filter for air conditioner - Google Patents

Abstract

PURPOSE:To automatically, rapidly and certainly prepare a deodorizing filter for an air conditioner. CONSTITUTION:Free roller conveyors 22, 23 are arranged to the introducing part of a manufacturing apparatus and a lattice like filter base material 12 is continuously introduced into the apparatus in an undeveloped state. A developing machine 25 is arranged between the conveyors 22, 23 to accelerate the development of the base material by the action of moisture. Continuously, a high viscosity self-adhesive is supplied to the base material in a dipping machine 28. The base material coated with the self-adhesive is dried by a dryer 36 and subsequently cut into a predetermined dimension by first and second cutters 38,48. Subsequently, active carbon is bonded to the base material by a bonding machine 54.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] The present invention relates to a method and apparatus for producing a deodorizing filter for air conditioners, and more specifically to the production of a filter consisting of a lattice-shaped filter base and activated carbon particles adhered to the filter base. Regarding equipment.

0002

[Prior Art] The present applicant has filed Japanese Patent Application No. 1-258748.
proposed a filter consisting of a lattice-shaped filter base and gas adsorbent (mainly activated carbon) particles adhered to the filter base. In this filter, the thickness of the substrate is about 15 mm or less, the planar area of one cell of the lattice of the substrate is about 0.20 to about 0.35 cm2, the size of the gas adsorbent particles is about 20 to about 60 mesh, Amount of gas adsorbent particles used per unit area of the above substrate plane = about 400 - about 20
00g/m2, aperture ratio of this filter = approx. 50 - approx. 80
It is characterized by satisfying the condition of %.

In summary, this filter differs from conventional filters by the relatively large size of the activated carbon (gas adsorbent) particles and by the small thickness of the filter. Therefore,
Special consideration is required when handling the filter base, impregnating activated carbon, etc., which is different from conventional products. In particular, it is important to quickly and reliably attach the activated carbon to the filter base and to prevent the activated carbon from falling off after manufacture.

0004

SUMMARY OF THE INVENTION The present invention has been made based on this viewpoint, and is disclosed in Japanese Patent Application No. 1-258748.
It is an object of the present invention to provide an automatable manufacturing method and apparatus for quickly and reliably manufacturing the above-mentioned filter disclosed in the above publication.

[0005]

[Means for solving the problem] In order to achieve the above purpose,
In the method of the present invention, the expanded lattice-shaped filter substrate is immersed in a bath of a high viscosity adhesive, the adhesive is applied to the entire surface, and the excess of the adhesive is removed, and then the The method is characterized in that after the adhesive is generally dried by heating, activated carbon is supplied to the entire substrate, and the activated carbon is attached to the entire substrate via the adhesive.

In a preferred embodiment, the viscosity of the adhesive = about 10-50 poise, the moisture content after drying of the adhesive = less than 10%, and the excess rejection of the adhesive is about 30-20 poise.
This is done with air at a wind speed of 50 m/sec.

[0007] The apparatus of the present invention also includes an introduction section for continuously introducing the lattice filter substrate in an unexpanded state, a spreading section for spreading the substrate after the introduction section, and a spreading section for spreading the substrate in the spread state. a dipping section for applying a high-viscosity adhesive; a blowing section for removing excess adhesive on the substrate with air; a drying section for drying the adhesive on the substrate by heating; and a drying section for drying the adhesive on the substrate by heating; The present invention is characterized in that it includes an attachment section that attaches activated carbon to the substrate through the adhesive, and a cutting section that cuts the substrate into appropriate dimensions at least after the adhesive has dried.

[0008]

[Operation] According to the method and apparatus according to the present invention having the above-described structure, the filter substrate is conveyed to the front of the apparatus in an unexpanded state. Then, in this device, it is first spread out in a lattice shape,
An adhesive is applied, the adhesive is dried, the material is cut to a predetermined size, and finally activated carbon is applied.

[0009]

[Example] [Structure and material of filter]

FIG. 2 shows a deodorizing filter 10 manufactured by the apparatus according to the present invention.
It is a top view showing an example. This filter consists of a grid-like filter base 12 and gas adsorbent particles 14 adhered to the filter base 12.

The deodorizing filter 10 has an aperture ratio (in a plane parallel to the plane of FIG. 2) of about 50 to about 80%, and this value is obtained as a result of complying with various conditions described below. Further, the thickness of the filter 10 (in the direction perpendicular to the paper plane of FIG. 2) is 15 mm or less, preferably about 3 mm or more. The present filter 10 differs from conventional filters in that the gas adsorbent particles 14 are relatively large in size and the thickness of the filter 10 is small, as shown in FIG. These characteristics are the key to satisfying the requirements of low pressure loss, appropriate deodorizing ability, and long life as a deodorizing filter for air conditioners.

The base 12 is made of a thin material such as paper, aluminum, or plastic. When using paper as a material,
The strength can also be reinforced by impregnating it with phenol resin or the like. Further, the base body 12 can also be subjected to a non-combustible treatment. The thickness of the base body 12 is substantially the same as that of the present filter 10, and is therefore approximately 15 mm or less, preferably 3 mm or more. This thickness is determined because the present filter 10 is ultimately housed within the casing of the air conditioner.

In the illustrated example, the pattern shape of the lattice of the base 12 is hexagonal, so-called a honeycomb shape.
This pattern shape can be any shape, such as a rectangle or a triangle. However, the planar area of one cell 16 of the lattice (in a plane parallel to the paper plane of FIG. 2) is about 0.20 to about 0.35 cm2. This value essentially means the density of the partition wall 18 for supporting the gas adsorbent particles 14.

The gas adsorbent particles 14 are made of activated carbon,
It is also possible to use other types such as impregnated activated carbon. Further, in order to deal with indoor CO generation sources such as oil stoves, a catalyst capable of catalytically oxidizing CO can be used in combination with a deodorizer. As this catalyst, a gold/oxide catalyst (disclosed in JP-A No. 60-238148, etc.) which does not become inactive even in the presence of moisture is desirable. The size of the gas adsorbent particles 14 is about 20 to about 60 mesh, and the amount of gas adsorbent particles 14 used per plane unit area of the base 12 is about 400 to about 200.
0g/m2.

As the binder for adhering the gas adsorbent particles 14 to the substrate 12, an adhesive is preferably used to prevent the particles from falling off. Known adhesives such as acrylic, natural rubber, synthetic rubber, and silicone adhesives can be used, but in order to strongly adhere to the filter base so that the activated carbon does not fall off, it is necessary to use a highly concentrated adhesive. agent is used and the layer thickness is required to be thick to some extent. Therefore, the adhesive liquid used has a high viscosity (approximately 10 to 5
0 poise) and the method of application must be such that a large layer thickness is obtained. [Overall Apparatus of First Embodiment] FIG. 1 is a plan view showing the entire first embodiment of a manufacturing apparatus for a deodorizing filter for an air conditioner according to the present invention.

[0016] At the entrance of the apparatus, an introduction part is formed for introducing the filter base in an unexpanded state, that is, the filter base in which the lattice is collapsed, into the apparatus. With this device,
Since unexpanded material blocks can be introduced and processed as they are, it is possible to reduce labor and costs in transporting and storing materials.

Free roller conveyors (introducing machines) 22 and 23 are provided in the introduction section, and these conveyors continuously introduce the substrates 12 in a direction parallel to the paper plane of FIG. conveyor 22,
A spreading machine 24 is installed in the middle of 23, and this spreads the substrate, that is, opens the lattice, by the action of steam moisture and heat. A pin conveyor 26 is disposed following the conveyor 23, and this conveys the substrate by hooking pins on a grid of the expanded substrate.

[0018] Following the conveyor 26, a dipping machine 28 is disposed for supplying a high viscosity adhesive to the stretched substrate. The dipping machine 28 is of a type that forcibly immerses the substrate 12 in a high viscosity (approximately 10 to 50 poise) adhesive bath to form a thick adhesive layer over the entire area of the substrate. At this time, since the adhesive has a high viscosity, it is thought that a film is often applied within the grid. Therefore, if the filter is allowed to dry as it is, it will cause an increase in pressure loss, a decrease in deodorizing performance, and a shortened service life of the finished filter. In order to avoid this, in the device of the present invention,
A blower 32 for removing excess adhesive with air is disposed after the dipping machine 28. Since the adhesive has a high viscosity,
The wind speed of the air hitting the adhesive is quite high (approximately 30 to 250
m/sec) is desirable.

A pin conveyor 34 similar to the conveyor 26 is disposed after the blower 32, and this conveyor 34 is connected to the next dryer 3.
The base body 12 is delivered to the pin conveyor 6. Because of the above configuration, in the illustrated apparatus, when using a new block of base material, the base material must be manually removed until the grid at the tip of the base is caught on the pins of the pin conveyor of the dryer 36. It will be introduced from the entrance side.

The dryer 36 heats the substrate 12 to reduce the moisture content of the adhesive applied to the substrate to a predetermined amount. This imparts a predetermined viscosity to the adhesive and removes the odor of the solvent. Generally, the initial moisture content of the adhesive is about 70% by weight, and this is reduced to 10% by weight or less, preferably about 3% by weight, at the outlet of the dryer 36. Also, the thicker the adhesive layer is, the more likely it is to foam during the drying process.
At moderate temperature (approximately 60-100℃) for a long time (approximately 10
It is desirable that the process be carried out over a period of ~30 minutes).

After drying, the substrate 12 is cut to size for the finished air conditioner filter. The substrate after the adhesive has dried has considerable strength, so it is possible to cut it accurately. Furthermore, cutting before impregnating activated carbon has the advantage of extending the life of the cutting blade. However, it is also possible to cut the substrate after impregnating the activated carbon.

More specifically, at the outlet of the dryer 36,
A first cutter 38 is installed, which cuts the substrate 12 in a direction perpendicularly transverse to the longitudinal axis from the conveyor 22 to the dryer 36. Following this, a direction changing mechanism 44 is provided to transfer the substrate 12 cut by the cutter 38 from the roller conveyor 42 to a roller conveyor 46 in a conveying direction perpendicular thereto. At the end of the conveyor 46, a second
A cutting machine 48 is installed, which cuts the substrate 12 in a direction perpendicularly transverse to the longitudinal axis of the conveyor 46, thereby cutting the substrate 12 into the predetermined dimensions described above.

Following the second cutting machine 48, there is an impregnating machine 54 for adhering activated carbon to the substrate 12 of a predetermined size through the adhesive.
is placed. The applicator 54 advances the base body 12 by means of a vibrating conveyor mechanism that constitutes its bottom wall. Coating machine 54
An activated carbon feeder 5 is provided on the side of the impregnation device 54 to feed activated carbon toward the base 12 so as to fall from above.
2 is arranged. A sieve part 56 is installed at the rear of the impregnation machine 54 to remove a part of the activated carbon.

At the exit of the applicator 54, a belt conveyor 5 is provided.
8 are arranged at right angles to the conveyor 44. A friction machine 62 is installed at the end of the conveyor 58 to remove a portion of the activated carbon by friction, and a vibrating sieve 64 is installed after that.

[0025] The activated carbon impregnated onto the substrate 12 includes those that are firmly fixed to the substrate and those that are weakly attached. Activated carbon that adheres weakly will be exposed to subsequent contact,
Since it may easily fall off due to vibration or the like and contaminate the environment, it is desirable to remove it during the manufacturing process. The falling off method includes a method using an impact force such as a vibrating conveyor, a method using a centrifugal force, a method using a friction method such as a brush or a coarse file, etc., and it is possible to arbitrarily select one or more of these methods. . In the illustrated apparatus, the sieving section 56 and the sieving machine 64 use the impact force of the vibrating conveyor, and the friction machine 62 uses the rotational friction force of the file to remove unnecessary activated carbon.

[0026] Following the sieving machine 64, a packaging section 66 of a known type is arranged. The filter base from which unnecessary activated carbon has been removed is then packaged as a completed deodorizing filter for an air conditioner in a form suitable for shipping using a bag, cardboard, or a combination thereof. Further, here, the completed filter can be surrounded with a ventilation material such as a non-woven fabric or a net using means such as heat sealing to improve the appearance and quality. Each of the above parts will be explained in more detail below. [Introduction and expansion]

FIG. 3 is a schematic side view showing an enlarged view of the conveyors 22, 23, the spreading machine 24, etc. Conveyor 22, 23
is a free roller type having a large number of rollers 102 arranged in parallel. The spreading machine 24 has both conveyors 22 and 23.
placed in the middle. The filter base 12 is introduced from the conveyor 22 side in an unstretched state, is stretched by the stretching machine 24, and then discharged to the conveyor 23 side.

The spreading machine 24 includes a casing 112 having an opening (not shown) corresponding to the passage of the base body 12, and a steam pipe 114 and an air supply pipe 116 are respectively attached to the casing 112. Steam piping 114 is connected to a suitable steam source (not shown), and air supply piping 116 is connected to blower 11.
Connected to 8. The steam and air introduced into the casing 112 are guided into the duct 122 and expand the unexpanded base 12 passing through the center of the casing 112 by applying heat and moisture to the unexpanded base 12 . Further, a drain pipe 124 is attached to the bottom of the spreading machine 24.

A brake 104 is provided at the entrance of the spreading machine 24, facing the conveyor 22. The substrate 12 is slowed down by a brake 104 on the inlet side of the spreading machine 24, while on the exit side of the spreading machine 24, the speed is reduced by a pin conveyor 26.
It is forcibly pulled. Therefore, in combination with the heat and moisture applied by the stretching machine 24, the stretching of the base body 12 is facilitated.

After the conveyor 23, a pin conveyor 26
will be placed. As shown in FIG. 4, the conveyor 26 includes two endless belts 132 stretched on both sides of the base 12 in the conveyance direction and driven by a motor 138. A plurality of bars 134 are stretched between both belts 132, and a plurality of pins 136 are installed on the bars 134. conveyor 2
6 transports the base body by hooking pins 136 on the lattice of the base body 12 after being expanded.

[0031] At the entrance of the conveyor 26, a pressure belt member 106 is disposed opposite the conveyor 26. Crimp belt member 1
06 is driven by a dedicated motor (not shown) via a transmission, and operates in synchronization with the pin conveyor 26 to assist in securely engaging the pins 136 with the grid of the base body 12. [Application section and blow-off section]

FIG. 5 is a schematic side view showing the soaking machine 28 and the blowing machine 32 on an enlarged scale. Dipping machine 28 and blowing machine 3
2 is a common casing 142 divided by a partition wall 144
A high-viscosity (approximately 10 to 50 poise) adhesive 143 is stored on the dipping machine 28 side. At the bottom of the casing 142, there is a pipe 1 for removing the drain in each divided tank.
66 and piping 168 are respectively attached.

A rotary bar 152 having four rectangular frames pivoted at 90° intervals is disposed above the adhesive bath, and is continuously driven by a motor 154 in the direction of the arrow in FIG. be done. The base body 12 is attached to the roller 1 at the entrance of the dipping machine 28.
46, guide 156 of blower 32 and exit roller 14
8 in a cross-linked state, and is forcibly immersed in the adhesive bath by the rotating bar 152. This immersion
is carried out approximately parallel to the aperture direction of the lattice, and therefore,
A thick adhesive layer can be quickly formed over the entire substrate 12 without forming bubbles.

In the blower 32, two high pressure air pipes 162 are arranged above the guide 156. Each tube 1
62 includes a plurality of downward jet nozzles 16 in a staggered arrangement.
4 is attached, from which high-speed air (about 30 to 250 m/sec) is applied to the base 12 passing through the guide 156.
) is sprayed continuously. This removes the excess adhesive that forms a film on the lattice of the base 12. [Drying section]

FIG. 6 is a schematic side view showing an enlarged view of the inside of the dryer 36. As shown in FIG. The dryer 36 includes a casing 172 that forms a closed space for drying, and the interior thereof is surrounded by a partition wall 174.
It is divided into three rooms 176 by. A pin conveyor (not shown, conveyor 2
6) passes through all the chambers, and the substrate 12 with the coating agent attached thereon is conveyed.

A heating member 178 is disposed in each chamber 176 facing the conveyor, and these members are composed of a plurality of far-infrared lamps. Additionally, three dampers 182 are installed at the top of the casing 172, corresponding to each room. On the other hand, at the bottom of the casing 172, there are three
Two suction pipes 184 are connected, and these are connected to an exhaust fan 186. Therefore, during the heating process, the operation of the fan 186 forms an airflow from the damper 182 to the suction pipe 186, and moisture generated from the adhesive due to heating is removed from the interior space of the casing 172.

This heat drying treatment is carried out at a moderate temperature (approximately 60 to 100° C.) for a long time (approximately 10 to 30 minutes) in order to prevent foaming of the adhesive coating layer. Generally, the initial moisture content of the adhesive is about 70% by weight, and this is reduced to 10% by weight or less, preferably about 3% by weight, at the outlet of the dryer 36. [Cutting section]

FIGS. 7(a) and 7(b) are an enlarged front view and side view of the first cutting machine 38. Cutting machine 3
8 has a structure in which the base body 12 is pressed against the conveyor 42 side with a bar 194 and the base body 12 is cut while driving the rotary blade 192 of the cutter in the transverse direction. The rotary blade 192 and the bar 194 operate synchronously by the structure described below.

A pedestal 196 is arranged below the substrate passage, and columns 198 are fixed on both sides of the pedestal 196. Three transverse shafts 204 are bridged between both columns via mounting portions 202, and cylinders 206 are reciprocatably mounted thereon. Further, a vertical shaft 208 is disposed in the cylinder 206, and an upper and lower cylinder 212 is movably mounted along the vertical shaft 208. Further, below the cylinder 212,
A motor 216 for the rotary blade 192 is attached via the frame 214. Therefore, the rotary blade 192 can be reciprocated by the action of the cylinder 202, and can be moved up and down by the action of the cylinder 206. On the other hand, a cylinder 218 is installed in the center of the frame, and this cylinder rod is connected to the horizontal frame 222.
and is connected to the pressing bar 194 via the vertical frame 224. Therefore, the bar 194 can be moved up and down by the action of the cylinder 218. Guides 226 are engaged with both vertical frames 224 to assist in reliable movement of the bar 194.

A slit 228 is formed in the center of the pressing bar 194 along its longitudinal direction, and the peripheral edge of the rotary blade 192 projects downward from the bar 194 through the slit 228 . When not cutting, the rotary blade 192 and bar 194 are in the position shown to allow passage of the substrate 16. On the other hand, during cutting, the rotary blade 192 and the bar 194 are lowered in synchronization, and the rotary blade 192 moves in the transverse direction along the slit of the bar 194 while the bar 194 presses the base 12 against the conveyor 42 side. While cutting, the base body 12 is cut.

FIG. 8 shows the direction changing mechanism 4 after the first cutting machine 38.
4. FIG. Conveyor 42 following cutting machine 38
The conveyor 46, which has a conveying direction perpendicular thereto, is a driven roller conveyor type having a number of belt-driven rollers 232 arranged in parallel.

A first cutting machine 3 is installed on both sides of the conveyor 42.
A photosensor 231 is disposed at a position a predetermined length from 8. Base 12 with sensor 231 cut by first cutting machine 38
When the tip of the cutter is detected, the conveyor 42 stops and the first cutter 38 performs a new cut. This makes it possible to cut the base body to a predetermined size.

An end wall 234 is installed at the end of the conveyor 42, and perpendicular thereto, a pusher 238 is installed on the side of the conveyor 42, which is attached to a rod of a cylinder 236. After the substrate 12 cut by the cutter 38 collides with the end wall 234, it is pushed by the pusher 238 and transferred to the conveyor 46.

Subsequently, the substrate 12 is cut into the first cutter by the second cutting machine 48.
The cutting direction is perpendicular to the cutting direction. Second cutting machine 4
The structure of the cutting machine 8 and the method of determining dimensions of the substrate using the sensor are almost the same as those of the first cutting machine 38. Both cutting machines 38, 4
By cutting at 8, the base body 12 is dimensioned for the finished filter. [Attachment part]

FIGS. 9(a) and 9(b) are schematic side and rear views showing the applicator 54 in an enlarged manner, and FIG. 10 is a perspective view with a portion thereof omitted. Impregnator 54 includes a trough 242 that forms an activated carbon bath and sieve section 56 . A vibrating feeder 252 from an activated carbon feeder 52 is disposed above the activated carbon bath, and supplies activated carbon to the substrate so as to fall from above.

Both side walls 244 of the lower bulge of the trough 242
A vibrator 246 is attached to the trough 2.
42 itself is supported by a spring seat 248. The vibrator 246 includes an eccentric rotor that rotates in the direction of the arrow in FIG. 9(b), and this rotation applies a reciprocating driving force to the trough 242 in the direction of the arrow P in FIG. 9(a). As a result, the trough 242 vibrates in the direction of the same arrow, and its bottom wall 254
functions as a vibrating conveyor to move the board forward.

A sieve portion 56 is formed at the rear of the applicator 54, bordering the reversely inclined wall 256 at the center of the trough 242. The sieve portion 56 consists of a 10 mesh wire gauze 262 that covers the bottom wall opening 258 of the trough 242. In the sieve section 56, the activated carbon weakly adhering to the substrate is removed by the vibrating action of the trough 242 described above, and is collected through the wire mesh 262 into the case 264 below. By this primary brushing off of the activated carbon, environmental pollution on the subsequent belt conveyor 58 due to the activated carbon falling off can be largely avoided. [Cleaning Department]

FIG. 11 is a schematic side view showing the main part of a friction machine 62 that removes a portion of activated carbon by friction. In the friction machine 62, the base 12 is connected to the inlet drive roller 2.
72 and a driven roller 274, an exit side drive roller 276, and a driven roller 278. An endless file belt 288 is placed between both roller pairs above and below with the substrate 16 in between.
, 298 are arranged. The belt 288 is driven by a drive roller 282 that is pivotally supported at both ends of the length-adjustable frame 284.
, is stretched between the driven rollers 286, and similarly, the belt 29
8 is stretched between a driving roller 292 and a driven roller 296 which are pivotally supported at both ends of a frame 294 whose length is adjustable.

Both belts 288 and 298 rotate in the direction of the arrow in the figure at a much higher speed than the conveyance speed of the base 12. As a result, the activated carbon that protrudes above and below the base 12 is scraped off by friction, and the activated carbon that is weakly attached is peeled off from the base due to the vibrations applied to the base at this time.

FIG. 12 is an enlarged schematic side view showing the sieving machine 64 disposed immediately after the friction machine 62. As shown in FIG. The sieving machine 64 has basically the same structure as the sieving part 56 of the impregnating machine 54, and brushes off the activated carbon by the impact force of the vibrating conveyor.

[0051] In the center of the trough 302 of the sieving machine 64, there is a
A wire mesh 312 of 0 mesh is provided, over which the substrate passes. A vibrator 306 similar to the applicator 54 is attached to both side walls 304 of the lower bulging portion of the trough 302, and the trough 302 itself is supported by a spring seat 308. The vibrator 306 has a built-in eccentric rotor,
This rotation causes the trough 302 to vibrate, and the wire mesh 312
functions as a vibrating conveyor to move the board forward.

Activated carbon debris and weakly adhesive activated carbon generated by the friction machine 62 are reliably removed by the sieve 64. Therefore, the activated carbon is prevented from accidentally falling off during subsequent packaging or use. [Complete view of the device of the second embodiment]

FIG. 13 is a plan view showing the entire second embodiment of the apparatus for manufacturing a deodorizing filter for air conditioners according to the present invention. In the figure, the same members as those in FIG. 1 are given the same reference numerals, and their explanations will be omitted.

The apparatus of the second embodiment uses a humidifier-type spreading machine 25, and the cleaning section is removed from the apparatus line, and a batch processing type cleaning drum 70 (see FIG. 15) is used. This device differs greatly from the device of the first embodiment in terms of its usage. In FIG. 13, a reservoir 68 is arranged instead of the cleaning section. Also in the same figure,
Although the sieve section 56 of the activated carbon impregnator 54 is shown,
By employing the cleaning drum 70, its use becomes optional. Expanding machine 25 and cleaning drum 7
0 will be discussed later in the next section.

Further, at the outlet of the dipping machine 28, an air blowing machine 35 having a plurality of holes bored in a pipe is arranged below the conveyor 34. The blower 35 blows up the adhesive that tends to accumulate on the underside of the substrate when the excess adhesive is removed by the blower 32 of the dipping 28 with air.
Make sure the adhesive spreads evenly over the entire substrate.

[0056] Also, at the entrance of the applicator 54, a reversing rod 53 is installed.
will be placed. The reversing rod 53 rotates the base body cut to a predetermined size from horizontally to 90° so that its longitudinal direction faces in the direction in which the line advances. As a result, the applicator 5
It becomes possible to narrow the spread width of the activated carbon in 4 and to efficiently attach it. [Example of changing the stretching machine and dryer conditions]

FIG. 14 is an enlarged schematic side view showing the spreading machine in the second embodiment of the apparatus together with the introduction section. In the same figure, the same members as those in FIG. 3 are given the same reference numerals, and their explanations will be omitted.

The spreading machine 25 includes a casing 125 having an opening (not shown) corresponding to the passageway of the base body 12. A humidifier 127 is connected to the casing 125 via piping 126. The humidifier 127 uses ultrasonic waves to
The casing 12 is of the type that excites moisture, that is, the casing 12
5. Supply moisture at room temperature in the form of a mist or mist. The moisture supplied into the casing 125 is
By being applied to the unstretched base 12 passing through the center of 5, it assists the stretching of the base. For example, if the substrate is made of kraft paper, the water content of the paper under normal conditions is 8w.
t% to 10 to 20wt%, preferably 17wt%
to rise to.

The advantage of this humidifier-type spreading machine 25 is that it can be used, for example, in cases where the joints between the raw materials of the substrate are connected with double-sided tape.
If steam is used as in the above, there is a risk that the above-mentioned connection part will come off, but with this spreading machine 25, there is no possibility that the above-mentioned connection part will come off. This is a major factor in improving the yield of filter products. Furthermore, along with the change in the spreading machine, the setting conditions of the dryer 36 are also changed. In this second embodiment, drying of the substrate is performed at about 90-130° C. for about 10-30 minutes. [Cleaning Drum] FIG. 15 is a schematic front view showing an activated carbon cleaning drum 70 used in the apparatus of the second embodiment.

The drum 70 has a casing 7 in the shape of an octagonal short column.
The rotating body 74 has an octagonal short column shape and has a lattice-like rotating body (for example, a radius of about 70 cm) that is pivotally supported within the rotating body 2 . The rotating body 74 is driven by a motor 78 connected to its support shaft 76 via a belt 82. Five rods 84 (for example, about 10 cm in length) are arranged on the inner vertically facing surfaces of the rotating body 74 in a direction perpendicular to the plane of the paper in FIG. 15 . Further, a chute 86 is provided below the casing 72 around the rotating body 74, and an activated carbon recovery container 88 is provided at the outlet of the chute 86.

The rotating body 74 stores about 200 substrates impregnated with activated carbon, that is, primary products of filters, and rotates at 32 rpm.
It is run for 10 to 30 minutes, preferably 15 minutes. As the rotating body 74 operates, the activated carbon-impregnated substrate is scraped up above the drum by the rod 84, and as it falls under gravity, activated carbon debris and weakly adhesive activated carbon are brushed off. The activated carbon that has been shaken off passes through the grid of the rotating body 74 itself and is collected into a container 88 along a chute 86. Therefore, activated carbon is prevented from accidentally falling off from the activated carbon-impregnated substrate during subsequent packaging or use.

The activated carbon-impregnated substrate can be fed from the reservoir 68 shown in FIG. 13 to the cleaning drum 70 manually or by using an auto feeder (not shown). When using an auto feeder,
Preferably, the drum 70 is set to automatically start when a predetermined number of substrates have been accumulated.

Although the present invention has been described above in detail with reference to the preferred embodiments shown in the drawings, those skilled in the technical field to which the manufacturing apparatus of the present invention pertains will understand that the above-mentioned embodiments may be modified within the scope of the spirit of the present invention. Various changes will be possible.

[0064]

[Effects of the Invention] According to the present invention, after the filter base is immersed in an adhesive bath and the adhesive is applied, the excess adhesive that forms a film on the grid of the base is blown off with air. This makes it possible to use high-viscosity adhesives.

Furthermore, in the embodiment in which the above-mentioned dipping is carried out generally parallel to the opening direction of the grid of the substrate, even if a high viscosity adhesive is used, the dipping is carried out over the entire substrate without forming bubbles. This makes it possible to quickly form a thick adhesive layer. Furthermore, since activated carbon is attached after drying the adhesive, the viscosity of the adhesive is further improved, and activated carbon can be attached quickly and reliably.

[0066] Furthermore, when cutting the substrate after drying the adhesive and before impregnating activated carbon, the substrate itself has considerable strength due to the drying of the adhesive, and cutting must be performed accurately. I can do it. In addition, problems such as abrasion of the cutting blade due to activated carbon do not occur, and its life can be extended.

Furthermore, at the final stage of the manufacturing process, activated carbon debris and activated carbon with weak adhesion are reliably removed. Therefore, the activated carbon is prevented from falling off inadvertently during use.
It becomes possible to avoid problems such as environmental pollution and deterioration of performance.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing the entire first embodiment of a manufacturing apparatus for a deodorizing filter for air conditioners according to the present invention.

FIG. 2 is a plan view showing an example of a deodorizing filter manufactured by the apparatus according to the present invention.

FIG. 3 is a schematic side view showing an enlarged introduction section and a spreading machine.

FIG. 4 is a perspective view showing a pin conveyor.

FIG. 5 is an enlarged schematic side view showing a dipping machine and a blowing machine.

FIG. 6 is a schematic side view showing an enlarged view of the inside of the dryer.

[Figure 7] (a) is an enlarged front view of the cutting machine, (b)
is its side view.

FIG. 8 is a perspective view showing a direction changing mechanism after the first cutting machine.

FIG. 9(a) is a schematic side view showing an enlarged applicator;
b) is its rear view.

FIG. 10 is a perspective view of the applicator with some parts omitted.

FIG. 11 is a schematic side view showing the main parts of the friction machine.

FIG. 12 is an enlarged schematic side view showing the sieving machine immediately after the friction machine.

FIG. 13 is a plan view showing the entire second embodiment of the apparatus for manufacturing a deodorizing filter for air conditioners according to the present invention.

FIG. 14 is an enlarged schematic side view showing the spreading machine together with the introduction part in the second embodiment device.

FIG. 15 is a schematic front view showing a cleaning drum used with the second embodiment apparatus.

[Explanation of symbols]

22, 23... Free roller conveyor, 24, 25... Stretching machine, 26... Pin conveyor, 28... Dipping machine, 32... Blowing machine, 36... Dryer, 38... First cutting machine, 44... Direction changing mechanism, 48 ...Second cutting machine, 52...Activated carbon supply machine, 54...
Coating machine, 62... Friction machine, 64... Sieving machine, 66... Packing section, 70... Cleaning drum.

Claims (10)

[Claims] Claim 1: A stretched lattice-shaped filter substrate is immersed in a bath of a high viscosity adhesive, the adhesive is applied to the entire surface, the excess of the adhesive is removed, and then the adhesive is applied. A method for producing a deodorizing filter for an air conditioner, comprising: supplying activated carbon to the entire substrate after drying it by heating, and adhering the activated carbon to the entire substrate via the adhesive. 2. The adhesive has an initial viscosity of about 10 to 50
2. The method according to claim 1, wherein the poise is poise. Claim 3: The moisture content of the adhesive after drying is 10
3. The method according to claim 1 or 2, wherein the amount is less than %. Claim 4: Elimination of excess of the adhesive is about 30 to 2
4. The method according to claim 1, wherein the method is performed using air at a wind speed of 50 m/sec. 5. Claims 1 to 4 further comprising the step of cutting the substrate after heating the adhesive and before impregnating the activated carbon.
The method described in any of the above. 6. The method according to claim 1, further comprising the step of cutting the substrate after impregnating the activated carbon. 7. The method according to claim 1, further comprising the step of stretching the unstretched substrate before immersing the substrate in the adhesive bath. 8. The method according to claim 1, further comprising the step of forcibly removing the activated carbon weakly attached to the substrate after impregnating the activated carbon. 9. An introduction section for continuously introducing an unexpanded lattice filter substrate, a stretching section for expanding the substrate following the introduction section, and applying a high-viscosity adhesive to the expanded substrate. a blowing section that removes excess adhesive on the substrate with air; a drying section that dries the adhesive on the substrate by heating; and a drying section that applies activated carbon to the substrate through the adhesive. 1. An apparatus for producing a deodorizing filter for an air conditioner, comprising: an attaching section for attaching the adhesive to the substrate; and a cutting section for cutting the substrate into appropriate dimensions at least after the adhesive has dried. 10. The apparatus according to claim 9, wherein the cutting section is disposed between the drying section and the applying section.