JP7355352B1 - ventilation system - Google Patents

Abstract

An object of the present invention is to provide a ventilation device that is inexpensive and easy to relocate. [Solution] A ventilation device 1 includes a casing 2, a fan 3 that is attached to the casing 2 and sucks air into the casing 2 and exhausts it to the outside, and a fan 3 that sucks air into the casing 2 and exhausts it to the outside. and an adsorption filter 4 disposed on the flow path of the air flow. The adsorption filter 4 includes a breathable filter container 41 that is detachable from the housing 2, and a granular adsorbent filled inside the filter container 41 so as to adsorb the solvent in the air passing through the filter container 41. 42. [Selection diagram] Figure 3

Description

The present disclosure relates to a ventilation device that adsorbs solvents or odorous substances contained in the air.

In workplaces where painting, degreasing, cleaning, printing, etc. are performed, organic solvents (hereinafter simply referred to as solvents) are frequently used. Since solvents are generally highly volatile, there is a risk that they may become vapor and be absorbed by workers. Therefore, in workplaces where solvents are used, it is desirable to use ventilation equipment to reduce the concentration of solvents in the air.

As an example of a ventilation system, Patent Document 1 below describes a ventilation system used in painting equipment for painting objects such as automobile bodies, which includes an air supply fan, an exhaust fan, and a ventilation system installed in the ceiling of a painting room. A device is disclosed that includes an air supply chamber with an air supply chamber, an air supply path that connects the air supply fan and the air supply chamber, and an exhaust path that connects the painting room and the exhaust fan. The air supply fan supplies conditioned air generated by the air conditioner to the painting room through the air supply path and the intake chamber. Air supplied to the painting room is exhausted from the painting room to the outside through an exhaust passage by an exhaust fan. As a result, the painting room is ventilated and the temperature and humidity of the painting room are adjusted to a temperature and humidity suitable for painting.

Patent No. 5351707

The ventilation device described in Patent Document 1 has a structure in which the air in the workplace itself is replaced using an air supply fan, an exhaust fan, etc. installed on the ceiling or wall of the workplace, and therefore tends to increase the size of the device. It is also necessary to install an exhaust duct to direct the air exhausted from the exhaust fan to the ceiling. For this reason, there are problems in that initial costs and power consumption increase, and relocation is difficult.

The present disclosure has been made in view of the above circumstances, and aims to provide a ventilation device that is inexpensive and easy to relocate.

In order to solve the above problem, a ventilation device according to one aspect of the present disclosure is a ventilation device that adsorbs solvents or odor substances contained in the air, and includes a housing, a ventilation device attached to the housing, The casing includes a fan that sucks air into the casing and exhausts the air to the outside, and an adsorption filter disposed on a flow path of the air flow inside the casing generated by the fan, and the adsorption filter is arranged in the casing. The filter includes a breathable filter container that can be attached to and removed from the filter container, and a granular adsorbent made of zeolite that is filled inside the filter container so as to adsorb a solvent in the air passing through the filter container. The container includes a frame body including a pair of opposing frame plates, and a pair of porous plates fixed to the pair of frame plates, each of the porous plates openings formed in each of the frame plates for ventilation. The filter container includes a punching plate having a large number of through holes, and a mesh plate in which wires are woven together in a mesh shape, and the filter container has a pair of perforated plates arranged in the direction of the air flow. Each of the frame plates includes an outer frame and a plurality of crosspieces connecting opposing edges of the outer frame, and the punching plate and the mesh plate The mesh plate is fixed to the frame plate while being stacked on top of each other in the thickness direction so that the mesh plate is located inside the filter container rather than the punching plate, and the particle size of the adsorbent is smaller than the diameter of the through hole of the punching plate. The opening of the mesh plate is smaller than the particle size of the adsorbent .

According to the present disclosure, it is possible to provide a ventilation device that is inexpensive, easy to relocate, and has excellent versatility.

1 is a perspective view showing the appearance of a ventilation device according to an embodiment of the present invention. FIG. 3 is a schematic perspective view showing the internal structure of the ventilation device. FIG. 3 is a side sectional view of the ventilation device. FIG. 3 is a front view of the ventilation device. FIG. 2 is an exploded perspective view showing the structure of an adsorption filter. It is a top view of the said adsorption filter. FIG. 3 is a perspective view showing the shape of a filter container in the adsorption filter. It is a partial schematic sectional view of the said filter container. It is an exploded perspective view showing the structure of the porous plate in the filter container. It is a schematic diagram showing an example of a filter regeneration device for regenerating the adsorption filter. It is a perspective view showing an example of use of the ventilation device. FIG. 7 is a perspective view showing another usage example of the ventilation device. FIG. 7 is a schematic diagram showing still another usage example of the ventilation device. FIG. 7 is a schematic diagram showing still another usage example of the ventilation device.

[Overall configuration of ventilation system]
FIG. 1 is a perspective view showing the external appearance of a ventilation device 1 according to an embodiment of the present invention, and FIG. 2 is a schematic perspective view showing the internal structure of the ventilation device 1. A ventilation device 1 shown in this figure is a device that adsorbs solvents contained in the air to reduce its concentration, and is used to ventilate a workplace where solvents are used. The ventilation device 1 can be applied to various workplaces where solvents are used, and as an example, the ventilation device 1 can be suitably used for ventilation in a workplace where painting or degreasing is performed. Further, the solvents that can be adsorbed by the ventilation device 1 are not particularly limited, and various volatile organic solvents such as methyl ethyl ketone (MEK), isopropyl alcohol (IPA), methanol, ethanol, toluene, xylene, and acetone can be adsorbed. The ventilation device 1 can be used for

The ventilation device 1 includes a housing 2, a fan 3, a first adsorption filter 4A, a second adsorption filter 4B, and a nonwoven filter 5. The housing 2 is a box-shaped member that constitutes the exterior of the ventilation device 1. The fan 3 is a blower that sucks air into the housing 2 and discharges it to the outside. The first adsorption filter 4A and the second adsorption filter 4B are filters that adsorb the solvent in the air passing through the housing 2. The nonwoven fabric filter 5 is a filter using a nonwoven fabric, and is used to filter dust and the like contained in the air.

The first adsorption filter 4A and the second adsorption filter 4B are arranged side by side in the order of the first adsorption filter 4A and the second adsorption filter 2B from the bottom in the vertical direction of the housing 2. The nonwoven fabric filter 5 is arranged further above the second adsorption filter 4B. In addition, below, when referring to the first adsorption filter 4A and the second adsorption filter 4B without distinguishing them, they will simply be referred to as the adsorption filter 4.

The housing 2 is a rectangular parallelepiped having four circumferential surfaces 11 to 14 (FIG. 1) extending in the vertical direction. A rectangular suction port 16 is formed at the bottom of each of the peripheral surfaces 11 to 14, respectively. The suction port 16 functions as an inlet for air sucked into the housing 2 . A prefilter 17 is attached to each suction port 16. The pre-filter 17 is, for example, a filter using a non-woven fabric, and is detachably attached to a position that covers the suction port 16 . Note that a breathable cover that further covers the prefilter 17 from the outside may be attached to the lower part of each of the peripheral surfaces 11 to 14. The cover may be hinged to the housing 2, for example, so as to be rotatable about one side thereof.

A plurality of casters 15 are attached to the lower surface of the housing 2. The casters 15 include wheels that can change direction, and support the housing 2 in a movable manner. That is, the ventilation device 1 of this embodiment is movable in an appropriate direction on the floor of the workplace.

FIG. 3 is a side sectional view of the ventilation device 1. As shown in FIGS. 1 to 3, the fan 3 is disposed at the top of the housing 2 and sucks air introduced into the housing 2 upward. That is, the fan 3 sucks the air introduced from each of the suction ports 16 on the four circumferential surfaces 11 to 14 of the housing 2 upward, thereby creating an air flow flowing from the bottom to the top (see the arrows in FIG. 3). is generated in the case 2. A discharge port 18 is formed on the top surface of the housing 2 and serves as an outlet for the air flow. The outlet 18 is covered by a breathable upper cover 19.

The fan 3 is supported on a partition wall 20 that partitions the housing 2 into upper and lower parts. An opening is formed in the center of the partition wall 20. The fan 3 includes a suction part 31 that faces the opening of the partition wall 20 from above, an impeller 32 that draws air sucked in from the suction part 31 in a centrifugal direction, and an electric motor that rotationally drives the impeller 32. include. The air drawn out in the centrifugal direction from the impeller 32 is discharged to the outside of the casing 2 through the discharge port 18.

The first adsorption filter 4A, the second adsorption filter 4B, and the nonwoven fabric filter 5 are arranged below the partition wall 20. In other words, the adsorption filter 4 and the nonwoven fabric filter 5 are arranged on the flow path of the air flow introduced into the housing 2 from the suction port 16 and directed toward the fan 3. Specifically, between the suction port 16 and the fan 3 in the housing 2, the first adsorption filter 4A, the second adsorption filter 4B, and the nonwoven fabric filter 5 are arranged in this order from the bottom.

Here, the casing 2 that accommodates each element in the above-mentioned positional relationship can be divided into three sections R1, R2, and R3 in the vertical direction. Hereinafter, they will be referred to as a first section R1, a second section R2, and a third section R3 in order from the bottom. The first section R1 is the lowest section and has a suction port 16. The third section R3 is the uppermost section with the partition wall 20 at the bottom, and has the discharge port 18. The second section R2 is an intermediate section between the first section R1 and the second section R2. The adsorption filter 4 and the nonwoven fabric filter 5 are accommodated in the second section R2, and the fan 3 is accommodated in the third section R3, so that the adsorption filter 4 and the nonwoven fabric filter 5 are placed on the flow path of the airflow rising toward the fan 3. A layout in which the nonwoven fabric filter 5 is arranged is realized.

As shown in FIG. 3, inside the second section R2, a first support section 21, a second support section 22, and a third support section 23 are provided in this order from the bottom. The first support section 21 is a support section that slidably supports the first adsorption filter 4A. The second support portion 22 is a support portion that slidably supports the second adsorption filter 4B. The third support part 23 is a support part that supports the nonwoven fabric filter 5 in a slidable manner. The first adsorption filter 4A, the second adsorption filter 4B, and the nonwoven fabric filter 5 are all supported via these support parts 21 to 23 so as to be slidable in the same direction. The first support part 21 has a sealing function to maintain airtightness between the casing 2 and the first adsorption filter 4A, and the second support part 22 maintains airtightness between the casing 2 and the second adsorption filter 4B. Has a sealing function.

In this embodiment, the first adsorption filter 4A, the second adsorption filter 4B, and the nonwoven fabric filter 5 are supported so as to be slidable in a direction orthogonal to the opposing circumferential surfaces 11 and 12 of the housing 2. Here, the direction in which each filter 4A/B, 5 slides, that is, the direction perpendicular to the circumferential surfaces 11, 12, is defined as the front-back direction, and the direction from one circumferential surface 12 to the other circumferential surface 11 is the forward direction, and the reverse direction is defined as the forward direction. Later. FIG. 4 is a front view of the ventilation device 1 seen from the front. As shown in FIGS. 3 and 4, a slot P1 for inserting and removing each filter 4A/B, 5 is provided in the vertically intermediate portion of the front surface of the second section R2, that is, the front peripheral surface 11 of the housing 2. ~P3 is formed. Each of the filters 4A/B, 5 is supported by each of the supporting parts 21 to 23, and is housed in the second section R2 in a state that it can be inserted and removed through the slots P1 to P3. A cover member 25 (FIG. 1) for covering the slots P1 and P2 is removably attached to the front surface of the second section R2. The ventilation device 1 shown in FIG. 4 is in a state with the cover member 25 removed.

The first support part 21 receives the first suction filter 4A inserted from the slot P1, and supports the received first suction filter 4A so as to be slidable in the front-rear direction. The second support portion 22 receives the second suction filter 4B inserted from the slot P2, and supports the received second suction filter 4B so as to be slidable in the front-rear direction. The third support part 23 receives the nonwoven fabric filter 5 inserted from the slot P3, and supports the received nonwoven fabric filter 5 so as to be slidable in the front-rear direction. Each of the supports 21 to 23 may include, for example, a rail member extending in the front-rear direction along the inner surfaces of the left and right side walls of the second section R2.

As shown in FIGS. 2 to 4, in this embodiment, the vertical dimension between the first adsorption filter 4A, the second adsorption filter 4B, and the nonwoven fabric filter 5 when attached to the housing 2 is The thickness is different. Specifically, the thickness of the second adsorption filter 4B is greater than the thickness of the nonwoven fabric filter 5, and the thickness of the first adsorption filter 4A is greater than the thickness of the second adsorption filter 4B. In other words, in this embodiment, the thickness of each filter is set such that the filter located on the upstream side (that is, the lower side) of the air flow in the housing 2 has a larger thickness.

As mainly shown in FIGS. 3 and 4, the ventilator 1 further includes a concentration measuring device 7, an alarm 8, and an operating section 9. The concentration measuring device 7 is a device that measures the concentration of the solvent in the air that has passed through the adsorption filter 4. The alarm device 8 is a device that issues an alarm according to the concentration of the solvent measured by the concentration measuring device 7. The operation unit 9 is an interface that accepts operator operations on the ventilation device 1.

The concentration measuring device 7 mainly includes an air pipe 71 and a concentration sensor 72 connected to the upper end of the air pipe 71, as shown in FIG. The concentration sensor 72 is a sensor that outputs an electric signal according to the concentration of solvent in the air, and is located in the upper part of the second section R2 in the housing 2, that is, between the nonwoven fabric filter 5 and the fan 3. is placed in the vertical center of the The air pipe 71 is a pipe for taking in sample air whose solvent concentration is to be measured, and has an intake port 71a at the end (lower end) opposite to the concentration sensor 72. The intake port 71a functions as an inlet for sample air guided to the concentration sensor 72. In this embodiment, the intake port 71a is arranged between the first adsorption filter 4A and the second adsorption filter 4B. That is, the concentration measuring device 7 detects the concentration of the solvent contained in the air that has passed through the first adsorption filter 4A, in other words, the air that has passed through the first adsorption filter 4A but has not passed through the second adsorption filter 4B. It is configured as follows.

The alarm device 8 is a device that issues an alarm in an appropriate manner that can be recognized by workers around the ventilation device 1, and is attached to the upper part of the housing 2. The alarm device 8 may include, for example, a sounding section that emits an alarm sound and a light emitting section such as a revolving light. The alarm device 8 is activated to warn the operator when the concentration of the solvent detected by the concentration sensor 72 exceeds a predetermined reference value.

The operation unit 9 is composed of, for example, a touch panel display, and is arranged at the upper part of the second section R2 in the housing 2 (see FIGS. 1 and 4). The operation unit 9 is capable of accepting predetermined operations including, for example, an operation for switching operation/stop of the fan 3 and an operation for changing the rotation speed of the fan 3 to adjust the air volume. Note that the operation section 9 may also function as a display section that displays the concentration of the solvent.

[Structure of adsorption filter]
FIG. 5 is an exploded perspective view showing the structure of the adsorption filter 4, and FIG. 6 is a plan view of the adsorption filter 4. In this embodiment, the only difference between the first adsorption filter 4A and the second adsorption filter 4B is the thickness dimension in the vertical direction. In other words, the structure shown in FIGS. 5, 6, etc. is common to the first adsorption filter 4A and the second adsorption filter 4B. Therefore, hereinafter, the structure of the adsorption filter 4 will be described in which the first adsorption filter 4A and the second adsorption filter 4B are collectively referred to.

As shown in FIGS. 5 and 6, the adsorption filter 4 includes a filter container 41 and an adsorbent 42 filled inside the filter container 41.

The filter container 41 is a box body that is rectangular in plan view and can be accommodated inside the housing 2 . That is, the filter container 41 is formed so that it can be attached to and detached from the corresponding support portion 21 (22) in the housing 2 through the slot P1 (P2).

The adsorbent 42 is a granular material made of a large number of particles capable of adsorbing a solvent in the air passing through the filter container 41 . The material of the adsorbent 42 is not limited to any material as long as it has the property of adsorbing a solvent, but for example, porous crystalline aluminosilicate, that is, zeolite is suitable.

FIG. 7 is a perspective view showing the filter container 41 alone, and FIG. 8 is a partial schematic sectional view of the filter container 41. Note that in FIG. 7, the filter container 41 is shown with the lid member 47 removed. As shown in FIGS. 5 to 8, the filter container 41 includes a frame body 45 constituting its skeleton, a pair of porous plates 46 attached to both sides of the frame body 45 in the thickness direction, and a frame body 45 that is detachable from the frame body 45. It includes a lid member 47 that can be attached, and a plurality of ribs 48 provided inside the frame body 45. Here, the filter container 41 is attached to the housing 2 with the lid member 47 positioned on the front side of the housing 2, as shown in FIGS. 2 and 3. Therefore, in the following description, the side to which the lid member 47 is attached to the filter container 41 or the adsorption filter 4 will be referred to as the front, and the opposite side will be referred to as the rear. Further, the direction perpendicular to the front-rear direction based on this definition in plan view is defined as the left-right direction or the width direction. The thickness direction is a direction perpendicular to both the front-rear direction and the left-right direction (width direction), and corresponds to the up-down direction when attached to the housing 2.

The frame body 45 includes a pair of frame plates 51 that face each other in the thickness direction, a pair of side plates 52 that connect the left and right side edges of both frame plates 51, and a bottom plate 53 that connects the rear edges of both frame plates 51. including. The side plates 52 and the bottom plate 53 are coupled to each frame plate 51 by means such as welding. In other words, the left and right side surfaces and rear end surface of the frame body 45 are closed by the pair of side plates 52 and the bottom plate 53.

The front end surface of the frame body 45 is open. The adsorbent 42 is filled into the frame body 45 from the open front end surface. In other words, the frame body 45 has a filling port S1 that functions as an inlet for the adsorbent 42 at its front end.

The frame plate 51 is formed in a lattice shape when viewed from above. Specifically, the frame plate 51 includes an outer frame 61 that is rectangular in plan view, a plurality of vertical bars 62 that connect the front edge and the rear edge of the outer frame 61, and connects the left and right side edges of the outer frame 61 to each other. A plurality of horizontal bars 63 are included. These outer frame 61, vertical bars 62, and horizontal bars 63 intersect with each other so as to partition a plurality of rectangular openings S2. In this embodiment, the frame plate 51 has two vertical bars 62 and two horizontal bars 63, thereby forming a total of nine openings S2.

The side plates 52 are formed to extend in the front-rear direction along both ends of the frame body 45 in the width direction, and connect the side edges of the pair of frame plates 51 to each other. The side plate 52 has a flange 52a extending inward in the width direction at its front end. A fastening hole h2 is formed in the flange 52a. The fastening hole h2 is a hole into which a fastening member for coupling the lid member 47 to the frame body 45 is screwed.

The rib 48 is formed to extend in the front-rear direction at the middle of the frame body 45 in the width direction. In this embodiment, ribs 48 are provided at two locations in the width direction corresponding to the vertical bars 62 described above. Each rib 48 is made of aggregate and has a height corresponding to the distance between a pair of frame plates 51, and is connected to each frame plate 51 by means such as welding. That is, the rib 48 connects the pair of frame plates 51 at the middle of the frame body 45 in the width direction.

The porous plate 46 is a breathable plate having a large number of holes. The porous plate 46 is fixed to the frame plate 51 by means such as welding so as to cover the plurality of openings S2 of the frame plate 51 from the inside of the filter container 41.

FIG. 9 is an exploded perspective view for explaining the structure of the porous plate 46. As shown in FIGS. 8 and 9, the porous plate 46 includes a punching plate 65 having a large number of through holes h1, and a mesh plate 66 in which wires are woven together in a mesh shape. The particle size of the adsorbent 42 is smaller than the diameter of the through hole h1 of the punching plate 65. Further, the opening of the mesh plate 66, that is, the maximum gap between adjacent wire rods, is smaller than the diameter of the through hole h1 of the punching plate 65 and smaller than the particle size of the adsorbent 42. The punching plate 65 and the mesh plate 66 are fixed to the frame plate 51 in a state where they are stacked on each other in the thickness direction. More specifically, the punching plate 65 and the mesh plate 66 are arranged so that the mesh plate 66 is located inside the punching plate 65, or in other words, the punching plate 65 is closer to the frame plate 51 than the mesh plate 66 is. It is fixed at 51.

As shown in FIGS. 5 and 6, the lid member 47 includes a main body 68 having a shape capable of closing the filling port S1 at the front end of the frame body 45, and a handle 69 protruding forward from the main body 68. The main body portion 68 is coupled to the front end of the frame body 45 via a fastening member screwed into the fastening hole h2 at the front end of the frame body 45, thereby closing the filling port S1. The handle 69 functions as a handle on which the operator puts his/her hand when taking out the adsorption filter 4 from the housing 2 .

The adsorption filter 4 having the above structure is attached to the casing 2 with its thickness direction aligned with the vertical direction, in other words, with the pair of porous plates 46 aligned in the direction of air flow inside the casing 2. It will be done. As a result, the air flow inside the housing 2 is introduced into the filter container 41 through the lower porous plate 46, and after passing through the adsorbent 42 in the filter container 41, the air flows from the upper porous plate 46 to the outside. is derived. Then, in the process in which the air flow passes through the adsorbent 42, the solvent in the air is adsorbed by the adsorbent 42. This reduces the concentration of solvent in the air and ventilates the work area.

[Replay filter]
If ventilation by the ventilation device 1 is continued for a long period of time, the adsorption capacity of the adsorbent 42 may decrease as a result of the accumulation of the amount of solvent adsorbed onto the adsorbent 42. Therefore, it is desirable to periodically regenerate the adsorption filter 4. Note that the regeneration of the adsorption filter 4 is a process of desorbing the solvent adsorbed by the adsorption material 42. In this embodiment, the filter container 41 is filled with the adsorbent 42, and the adsorbent 42 can be inserted into and removed from the housing 2 together with the filter container 41. In other words, in this embodiment, a cartridge-type adsorption filter 4 is used in which functions necessary for adsorption of a solvent are integrated into a replaceable form. Therefore, regeneration of the adsorption filter 4, that is, desorption of the solvent from the adsorption material 42, can be performed by a relatively simple operation that takes advantage of this fact.

FIG. 10 is a schematic diagram showing an example of a filter regeneration device 100 for regenerating the adsorption filter 4. As shown in FIG. As shown in this figure, the filter regeneration device 100 includes a heating furnace 101 that can accommodate the adsorption filter 4 and a hot air supply source 102 that supplies hot air to the heating furnace 101. The hot air supply source 102 is a device that pumps air while heating it, and may include, for example, an electric heater and a fan for blowing air. The heating furnace 101 is a furnace through which hot air supplied from a hot air supply source 102 passes, and accommodates and holds a plurality of adsorption filters 4 in a posture intersecting the flow direction of the hot air (vertical direction in the figure). In the illustrated example, the heating furnace 101 can accommodate two sets of the first adsorption filter 4A and the second adsorption filter 4B arranged vertically.

When the adsorption filter 4 is set in the heating furnace 101 as described above, the adsorbent 42 inside is heated by the hot air passing through the adsorption filter 4. As a result, the solvent adsorbed on the adsorbent 42 is desorbed, and the ability of the adsorbent 42 to adsorb the solvent is restored. The temperature of the hot air can be set as appropriate within a range that allows the solvent to be desorbed from the adsorbent 42, and can be set to about 200° C., for example. The adsorption filter 4 is set in the heating furnace 101 for an appropriate period of time sufficient to restore the solvent adsorption ability of the adsorbent 42, thereby regenerating the adsorption filter 4. The adsorption filter 4 thus regenerated is again attached to the housing 2 of the ventilation device 1 and used for adsorbing solvents.

[Effect]
As explained above, in this embodiment, the adsorption filter 4 including the adsorbent 42 capable of adsorbing a solvent and the fan 3 that generates airflow are built into the common housing 2, so that ventilation of the workplace It is possible to realize a compact ventilation device 1 in which the elements necessary for solvent adsorption) are integrated. Furthermore, since the ventilation device 1 can be carried to various workplaces simply by moving the housing 2, the cost required for ventilation can be significantly reduced compared to, for example, a case where built-in ventilation equipment is provided in each workplace. That is, according to this embodiment, it is possible to realize a ventilation device 1 that is inexpensive and easy to relocate.

Moreover, in this embodiment, a cartridge-type adsorption filter 4 including a breathable filter container 41 and an adsorbent 42 filled therein is used, and the filter container 41 is removable from the housing 2. Therefore, the adsorption performance of the adsorption filter 4 can be maintained easily and appropriately. That is, since there is a limit to the total amount of solvent adsorbed by the adsorbent 42, if the adsorption filter 4 is continuously used, the ability of the adsorbent 42 to adsorb the solvent may decrease. Even in such a case, according to the present embodiment, the adsorption filter 4 is removed from the housing 2 and introduced into the filter regeneration device 100 described above, and the adsorbent 42 is heated to desorb the solvent from the adsorbent 42. By performing this treatment (regeneration treatment), the ability of the adsorbent 42 to adsorb the solvent can be restored. By returning the adsorption filter 4 that has been regenerated in this way to the housing 2, it becomes possible again to adsorb a sufficient amount of solvent with the adsorption filter 4, and the adsorption performance of the adsorption filter 4 can be maintained. I can do it. On the other hand, if it is difficult to sufficiently restore adsorption performance through the above-described regeneration process due to progressive wear of the adsorbent 42, the adsorbent 42 itself in the filter container 41 may be replaced. Even in this case, according to this embodiment in which the adsorption filter 4 is made into a cartridge, the work of replacing the adsorption material 42 can be facilitated.

Furthermore, if the filter container 41 is filled with the adsorbent 42 at a sufficient filling rate, a layer of the adsorbent 42 with a stable thickness corresponding to the internal volume of the filter container 41 can be obtained. It is possible to avoid a situation where the filling thickness of 42 is insufficient. This makes it difficult for the solvent to break through due to concentration of airflow in areas where the filling thickness is insufficient, that is, the solvent adsorption rate decreases beyond the allowable level, and improves the adsorption performance of the adsorption filter 4. can be secured.

Further, in the present embodiment, the filter container 41 includes a frame body 45 including a pair of opposing frame plates 51, and a pair of porous plates 46 that ventilately cover the opening S2 of each frame plate 51. A pair of porous plates 46 are arranged vertically side by side. According to such a configuration, the airflow flowing vertically within the housing 2 is introduced into the adsorbent 42 through the lower porous plate 46, and is led out from the adsorbent 42 through the upper porous plate 46. I can do it. Thereby, the solvent contained in the air can be appropriately adsorbed by the adsorbent 42, and the concentration of the solvent in the air after passing through the adsorbent 42 can be sufficiently reduced.

Furthermore, in this embodiment, a laminate in which a punching plate 65 having a large number of through holes h1 and a mesh plate 66 in which wires are interwoven in a mesh shape is used as the perforated plate 46, so that the inside of the filter container 41 is It is possible to prevent the adsorbent 42 filled therein from leaking out from the porous plate 46 with a high probability. Furthermore, since the rigidity of the porous plate 46 is improved, deformation of the porous plate 46 when the filter container 41 is filled with the adsorbent 42 can be suppressed. Thereby, the filling thickness of the adsorbent 42 can be stabilized, and the adsorption performance of the adsorption filter 4 can be ensured favorably.

Particularly, in the case of this embodiment, the punching plate 65 and the mesh plate 66 are stacked such that the fine mesh plate 66 is relatively located inside the filter container 41. Such a positional relationship is advantageous in preventing leakage of the adsorbent 42 and improving the rigidity of the porous plate 46, and leads to stabilization of the filling thickness of the adsorbent 42. Thereby, the adsorption performance of the adsorption filter 4 can be further improved.

Furthermore, in this embodiment, since the rib 48 that connects the pair of frame plates 51 is provided at the middle part in the width direction of the filter container 41, the rigidity of the filter container 41 can be further improved, and the adsorption material 42 can be The above-mentioned effect of stabilizing the filling thickness can be enhanced.

Further, in this embodiment, the filling port S1 is formed at the front end of the frame body 45, and the lid member 47 is removably attached to a position that closes the filling port S1, so that the filter container 41 is filled with the adsorbent 42. This work can be easily carried out with the lid member 47 removed. Furthermore, by attaching the lid member 47 after filling the adsorbent 42, the adsorbent 42 can be confined and stably held within the filter container 41.

Further, in this embodiment, the suction port 16 is formed in the first section R1, which is the lower region of the casing 2, and the adsorption filter 4 is accommodated in the second section R2, which is the middle region in the vertical direction of the casing 2. Further, the fan 3 is housed in the third section R3, which is the upper region of the housing 2. According to such a configuration, it is possible to generate an air flow sucked in from below and directed upward into the housing 2, and it is also possible to appropriately arrange the adsorption filter 4 on the flow path of the air flow. Furthermore, since the height of the air suction port 16 can be made low, the solvent, which has a heavy specific gravity and tends to accumulate near the floor of the workplace, can be efficiently sucked into the housing 2 and adsorbed.

Furthermore, in this embodiment, the adsorption filter 4 is slidably supported by a plurality of (in this case, two) support parts 21 and 22 provided at a plurality of height positions in the second section R2. According to such a configuration, the air flow can be passed through the plurality of adsorption filters 4 (the first adsorption filter 4A and the second adsorption filter 4B) in sequence, and the concentration of the solvent in the air can be sufficiently reduced. .

In addition, in this embodiment, a concentration measuring device 7 that measures the concentration of the solvent in the air that has passed through the lower adsorption filter 4 (first adsorption filter 4A), and a concentration measuring device 7 that measures the concentration of the solvent in the air that has passed through the lower adsorption filter 4 (first adsorption filter 4A), Each housing 2 is equipped with an alarm device 8 that issues an alarm when the alarm occurs. According to such a configuration, it is possible to notify the worker that the concentration of the solvent in the workplace is increasing, and to prompt the worker to take necessary measures such as regenerating or replacing the adsorption filter 4. can.

[Example of use]
Since the ventilation device 1 of this embodiment has four suction ports 16 formed on each of the circumferential surfaces 11 to 14 of the housing 2, air is sucked in from these four suction ports 16 and passed through the adsorption filter 4. , it is possible to ventilate the air in a wide area around the housing 2. However, the use of the ventilation device 1 is not limited to this, and it can also be used to intensively ventilate a place where solvent is particularly likely to accumulate. In the usage example shown in FIG. 11, a hose 90 is connected to one of the four suction ports 16. Specifically, an adapter 91 having a connection port 91 a connectable to the base end of the hose 90 is attached to one suction port 16 . Further, the other three suction ports 16 are blocked by a shielding plate 93. In this way, the ventilation device 1 can be used to intensively ventilate areas where solvent tends to accumulate. That is, by arranging the tip 90a of the hose 90 in a place where the solvent tends to accumulate, the air in the place is sucked by the hose 90 and introduced into the housing 2, and the solvent in the air is adsorbed by the adsorption filter 4. be able to.

FIG. 12 is a diagram showing an example of use when performing ventilation using a plurality of ventilation devices 1. This figure shows an example in which a workshop where a helicopter body 200 is painted is ventilated using a total of six ventilation devices 1. Hoses 90 are connected to the two ventilation devices 1 located on the left and right sides of the body 200, and the distal ends 90a of each hose 90 are inserted into the inside of the body 200. Thereby, the solvent accumulated inside the body 200 can be sucked in through the hose 90 and efficiently adsorbed. On the other hand, the hoses 90 are not connected to the remaining four ventilation devices 1. That is, the four ventilation devices 1 are used for sucking in and adsorbing the solvent through the plurality of suction ports 16. Here, in the example of FIG. 12, the four ventilation devices 1 are respectively arranged near the four corners of the workplace. Therefore, for these four ventilation devices 1, shielding plates 93 are attached to two suction ports 16 near the outer periphery of the workplace. Thereby, the air (solvent) in the workplace can be efficiently sucked in from the remaining two suction ports 16 to which the shielding plate 93 is not attached.

[Modified example]
In the embodiment described above, an example has been described in which two adsorption filters 4 (first adsorption filter 4A and second adsorption filter 4B) are installed in the housing 2, but the number of adsorption filters 4 is not limited to two. That is, the number of adsorption filters 4 installed in the housing 2 may be one, or three or more.

In the embodiment described above, the two adsorption filters 4 are arranged in the housing 2 in a vertically aligned manner on the premise that the fan 3 generates a vertical air flow inside the housing 2. When a plurality of adsorption filters 4 are arranged in the housing 2, the adsorption filters 4 only need to be lined up along the direction of the air flow inside the housing 2, and the line-up direction can be changed as appropriate depending on the direction of the air flow.

In the embodiment described above, the thickness of the first adsorption filter 4A on the lower side corresponding to the upstream side of the air flow was made larger than the thickness of the second adsorption filter 4B on the upper side, but the thickness of both adsorption filters 4A and 4B was made the same. You can also do this.

In FIG. 12, as a preferred example of use, the ventilation system 1 is used in a workshop where the body 200 of a helicopter is painted. The ventilation system of the present disclosure can be applied to various workplaces.

FIG. 13 is a diagram illustrating a case where the ventilation device of the present disclosure is applied to a printing workplace. The workshop shown in this figure is a workshop where printing is performed using a large-sized inkjet printer 300 inside a building 301. An air conditioner 302 that generates conditioned air CA is attached to the building 301. Inside the building 301, the solvent used in the inkjet printer 300 may evaporate, and the evaporated solvent may be contained in the air. The ventilation system 1 is installed in the building 301 to adsorb the solvent contained in the air. By adsorbing the solvent to the ventilation device 1, the concentration of the solvent in the building 301 can be reduced. Further, since the ventilation device 1 is present in the building 301, the need to replace the air itself in the building 301 is reduced, and air conditioning loss caused by the air conditioner 302 can be reduced.

FIG. 14 is a diagram illustrating a case where the ventilation device of the present disclosure is applied to a workplace where soldering work is performed. A suction duct 400 for sucking solder flux is installed in the workplace shown in this figure. The suction duct 400 includes a plurality of suction ports 401 that open above a plurality of work sections SC in which an operator performs soldering, and a duct main pipe 402 to which the suction ports 401 are commonly connected. The end of the duct main pipe 402 is connected to the ventilation device 1 via an adapter 91. The ventilation device 1 receives solder flux introduced from the suction duct 400 and adsorbs the solvent in the flux. This allows the concentration of solvent in the soldering workshop to be reduced.

In the modified examples of FIGS. 13 and 14, an example has been described in which the ventilation device of the present disclosure is applied to a workplace that manufactures products other than helicopters, but the ventilation device of the present disclosure can also be applied to other workplaces. Is possible. For example, the ventilation system of the present disclosure can be applied to various workplaces where solvents are used, such as hospitals, nursing care facilities, various examination rooms, beauty salons, nail salons, etc., where solvents are used for purposes such as disinfection and deodorization. It is possible.

Furthermore, the ventilation device of the present disclosure is not limited to use for adsorbing solvents, but can also be used for adsorbing odorous substances that are causative substances of bad odors. In other words, the ventilation device of the present disclosure can also be used as a deodorization device that reduces the concentration of odorous substances. In this case, the ventilation device is preferably applied to, for example, pet-related facilities such as pet shops, veterinary hospitals, or nursing care facilities. In these facilities, ammonia, methane, formalin, etc. may exist as substances that cause bad odors (odorous substances). By using the ventilation device of the present disclosure, these odorous substances can be adsorbed and malodors can be reduced. Note that when the ventilation device of the present disclosure is used as a deodorizing device, a concentration measuring device that measures the concentration of the odorous substance to be adsorbed may be used instead of the concentration measuring device 7 shown in FIG. 3 and the like. In this way, an alarm will be issued when the odor substance exceeds the standard value, thereby informing the operator that the odor level is increasing.

1 Ventilation device 2 Housing 3 Fan 4 (4A, 4B) Adsorption filter 7 Concentration measuring device 8 Alarm 16 Suction port 21 First support part (support part)
22 Second support part (support part)
41 Filter container 42 Adsorbent 45 Frame body 46 Porous plate 47 Lid member 48 Rib 51 Frame plate 65 Punching plate 66 Mesh plate R1 1st section R2 2nd section R3 3rd section S1 Filling port S2 Opening h1 Through hole

Claims (6)

A ventilation device that adsorbs solvents or odorous substances contained in the air,
A casing and
a fan attached to the casing that sucks air into the casing and exhausts it to the outside;
an adsorption filter disposed on a flow path of the airflow within the housing generated by the fan,
The adsorption filter includes a breathable filter container that is detachable from the housing, and zeolite particles filled inside the filter container so as to adsorb the solvent in the air passing through the filter container. including an adsorbent,
The filter container includes a frame body including a pair of opposing frame plates, and a pair of porous plates fixed to the pair of frame plates,
Each of the perforated plates covers the openings formed in each of the frame plates in a ventilable manner, and includes a punching plate having a large number of through holes, and a mesh plate in which wires are woven together in a mesh shape,
The filter container is attached to the housing with the pair of porous plates aligned in the direction of the air flow,
Each of the frame boards includes an outer frame and a plurality of crosspieces connecting opposing edges of the outer frame,
The punching plate and the mesh plate are fixed to the frame plate while being stacked on each other in the thickness direction, with the mesh plate being located inside the filter container rather than the punching plate,
The particle size of the adsorbent is smaller than the diameter of the through hole of the punching plate, and the opening of the mesh plate is smaller than the particle size of the adsorbent. The ventilation device according to claim 1,
The filter container further includes a rib that connects the pair of frame plates at the middle of the frame body in the width direction,
In the ventilation device, the rib is provided at a position in the width direction corresponding to the crosspiece. The ventilation device according to claim 1,
A filling port that functions as an inlet for the adsorbent filled into the filter container is formed on one surface of the outer periphery of the frame body,
The filter container further includes a lid member that is removably attached to the frame body at a position that closes the filling port. The ventilation device according to any one of claims 1 to 3 ,
The casing includes a first section in which a suction port for sucking air is formed, a second section located above the first section and slidably supports the adsorption filter, and a second section in which the suction filter is slidably supported. a third compartment located on the upper side and housing the fan. The ventilation device according to claim 4 ,
A ventilation device, wherein support parts that slidably support the adsorption filter are provided at a plurality of height positions spaced apart in the vertical direction in the second compartment. The ventilation device according to any one of claims 1 to 3 ,
a concentration measuring device that measures the concentration of a solvent or an odorous substance in the air that has passed through the adsorption filter;
A ventilation device further comprising: an alarm that issues an alarm when the concentration measured by the concentration measuring device exceeds a predetermined reference value.