JP2008246411A - Gas purification device - Google Patents

Abstract

To provide a compact gas purification device excellent in workability when replacing a chemical filter.
A purifying flow path section 40 having a chemical filter 50 for purifying gas, purifying gas flowing in from an upstream end 41 by a chemical filter, and flowing out the purified gas from a downstream end 42, and a purifying flow The housing portion 10 that houses the passage portion therein and the outer wall 11U that extends along the purification flow path portion of the housing portion is provided with a gas from the outside of the housing portion and purified by a chemical filter. An opening 30U for discharging the gas to the outside of the casing, and a communication channel 90 provided between the purification channel and the outer wall of the casing, and connecting the purification channel and the opening. The side surface 53U of the chemical filter constitutes a part of the inner surface 92 of the communication flow path portion, and the chemical filter is detachable so that it can be pulled out of the casing from the purification flow path section across the communication flow path section. Possible gas purification The device 1.
[Selection] Figure 5

Description

  The present invention relates to a gas purification device, and more particularly to a gas purification device that purifies a gas containing a relatively high concentration of chemical contaminants.

  In factories that handle chemical substances such as chemical factories and paint factories, a control room that centrally manages equipment in the factories may be installed on the site of the factories.

  In this case, for example, problems such as corrosion of computer wiring in the control room may occur due to acidic substances such as hydrogen sulfide, sulfur oxide, and chlorine released into the atmosphere on the factory premises.

Conventionally, there has been a method for dealing with such a problem, for example, by remodeling a control room into a clean room equipped with a chemical filter, a duct, and the like (for example, Patent Document 1).
JP 2004-278883 A

  However, in the above-mentioned prior art, in addition to the large-scale construction required for remodeling the existing control room, the chemical filter must be frequently replaced due to the relatively high concentration of acidic substances in the atmosphere. When this occurred, there was a problem in workability when replacing the chemical filter.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a compact gas purification device having excellent workability when replacing a chemical filter.

  A gas purification apparatus according to an embodiment of the present invention for solving the above problems includes a chemical filter that purifies gas, purifies the gas flowing in from an upstream end by the chemical filter, and purifies the purified gas. A purification flow path portion that flows out from the downstream end; a housing portion that houses the purification flow path portion; and a part of an outer wall that extends along the purification flow path portion of the housing portion, Between an opening for sucking gas from outside the casing or discharging gas purified by the chemical filter to the outside of the casing, and between the purification flow path and the outer wall of the casing And a communication flow path portion that connects the purification flow path portion and the opening, and the side surface of the chemical filter constitutes part of the inner surface of the communication flow path portion, and the communication flow The purification flow path across the road And it is provided detachably so that it can draw in the housing outer from.

  ADVANTAGE OF THE INVENTION According to this invention, the compact gas purification apparatus excellent in workability | operativity at the time of replacing | exchanging a chemical filter can be provided.

  Further, the opening is provided so as to be openable and closable at a position facing the side surface of the chemical filter in the outer wall of the housing part, and the chemical filter is disposed through the opening in the open state. It is good also as being provided so that attachment or detachment is possible so that it can pull out out of a housing | casing part. In this case, workability at the time of exchanging the chemical filter can be further improved. Further, the outer wall of the housing part is provided above the purification flow path part, the opening part is a discharge port part for discharging the gas purified by the chemical filter, Further, it may be possible to draw upward through the opening in the open state. In this case, workability at the time of exchanging the chemical filter can be further improved. Moreover, the said purification | cleaning flow path part is good also as having a blower in the upstream of the said chemical filter, and having a dust collection filter in the downstream of the said chemical filter. In this case, the gas can be purified more effectively. Moreover, it is good also as an indoor installation type installed in the room which should supply the gas purified with the said chemical filter. In this case, the gas in the room can be effectively purified simply by installing it in the existing room.

  Hereinafter, a gas purification apparatus according to an embodiment of the present invention will be described with reference to the drawings. The gas purification apparatus according to the present invention is not limited to this embodiment.

  1, FIG. 2, and FIG. 3 are a front view, a plan view, and a left side view, respectively, of an example of a gas purification device 1 (hereinafter referred to as “the present device 1”) according to the present embodiment. FIG. 4 is a cross-sectional view of the device 1 taken along line AA shown in FIG. FIG. 5 is a cross-sectional view of the device 1 taken along the line BB shown in FIG. The right side surface of the device 1 is symmetric with the left side surface shown in FIG.

  First, the outline | summary of this apparatus 1 is demonstrated. The apparatus 1 includes a chemical filter 50 for purifying gas, purifies the gas sucked from the outside by the chemical filter 50, and discharges the purified gas to the outside.

  In this embodiment, the case where this apparatus 1 is implement | achieved as an indoor installation type installed in the room (not shown) which should supply the purified gas is demonstrated as an example. That is, the present apparatus 1 sucks air in the room, removes chemical contaminants contained in the sucked air by the chemical filter 50, and discharges the purified air into the room.

  Therefore, according to this apparatus 1, the density | concentration of the chemical contaminant contained in the air in a room can be reduced effectively. That is, when the room to be installed is a control room equipped with a control device such as a computer that centrally manages the factory, the apparatus 1 is generated in the factory and included in the air in the control room. Contamination of the control device and wiring due to chemical contaminants can be effectively suppressed.

  Here, when the concentration of chemical pollutants contained in the air to be purified by the apparatus 1 is high (for example, when the concentration is in the order of ppm (parts per million)), the air is purified. Because the deterioration of the chemical filter 50 due to the rapid progress, it is necessary to replace the chemical filter 50 with high frequency. Therefore, as will be described later, the present apparatus 1 has a compact configuration with excellent workability when the chemical filter 50 is replaced.

  Next, details of the device 1 will be described. The apparatus 1 includes a purification flow path portion 40 having a chemical filter 50. This purification flow path part 40 purifies the gas which distribute | circulates the inside with the chemical filter 50. FIG.

  Here, as the chemical filter 50, any chemical filter can be selected and used depending on the purpose as long as it can remove chemical contaminants contained in the gas to be purified. That is, as the chemical filter 50, for example, a chemical filter that can remove chemical contaminants such as organic substances, acidic substances, and basic substances in gas by adsorption, a deodorization filter that can remove off-flavor components in gas by adsorption, A catalytic filter or the like that can decompose and remove chemical pollutants in the gas can be used.

  For example, activated carbon, ion exchange resin, zeolite, photocatalyst, manganese catalyst, copper manganese catalyst, or the like can be used as the functional agent provided in the chemical filter 50 to remove chemical contaminants in the gas. When using an ion exchange resin as a functional agent, for example, a high density ion exchange resin that effectively chemisorbs acidic substances and basic substances in gases on a structure with inorganic fibers having many voids as a skeleton. Those supported on can be suitably used.

  Moreover, as the chemical filter 50, those having an arbitrary skeleton structure can be used according to the purpose. That is, as the chemical filter 50, a honeycomb structure, a pleated structure, a pellet molded body, an extruded molded body, a porous molded body, or the like can be used, and the honeycomb is advantageous in that the pressure loss is small and the contaminant removal life is long. A structure can be suitably used.

  In the present embodiment, the chemical filter 50 is a plate-like honeycomb structure in which a functional material 52 capable of removing an acidic substance in a gas is filled in a metal rectangular frame portion 51. This chemical filter 50 stands upright so as to block the middle portion of the purification flow path portion 40 in the air flow direction from the upstream to the downstream in the purification flow path portion 40 (the direction indicated by the arrow X shown in FIGS. 4 and 5). Provided, and constitutes a part of the purification flow path section 40.

  The purification flow path section 40 purifies the gas flowing in from the upstream end 41 by the chemical filter 50 and causes the purified gas to flow out from the downstream end 42. In this purification flow path part 40, the chemical filter 50 is provided so that attachment or detachment is possible.

  FIG. 6 shows an example of the case where the chemical filter 50 is removed from the purification flow path section 40 or attached to the purification flow path section 40 in the apparatus 1 shown in FIG. As shown in FIG. 6, the chemical filter 50 includes an upstream surface 53B (hereinafter referred to as “inflow surface 53B”) into which gas before purification flows and a downstream surface 53F (hereinafter referred to as “inflow surface 53B”) from which purified gas flows out. It is provided so as to be slidable in a direction along the “outflow surface 53F”.

  Specifically, the left side wall 47L and the right side wall 47R of the purification flow path part 40 are respectively provided with a rail-shaped left guide part 44L and a right guide part 44R that are formed in an L shape in plan view and extend in the vertical direction. (See FIG. 4). The chemical filter 50 is provided such that the frame portion 51 can move in the vertical direction along the pair of left and right guide portions 44L and 44R.

  For this reason, the chemical filter 50 can be extracted from the purification flow path 40 by linearly pulling it upward from the purification flow path 40. Similarly, the chemical filter 50 can be installed in the purification flow path portion 40 by linearly inserting it downward with respect to a predetermined position of the purification flow path portion 40.

  The purification flow path unit 40 further includes a blower 60. As this blower 60, as long as it can be attached to a part of the purification flow path section 40, any type of blower can be selected and used according to the purpose. That is, as the blower 60, a turbo fan, an axial fan, a blower, or the like can be used, and a turbo fan can be preferably used in that it is relatively small and can effectively perform pressure feeding.

  In the present embodiment, the blower 60 is supported by a rotating shaft 61 so as to be rotatable about the rotating shaft 61 and is provided with a plurality of blades extending from the rotating shaft 61 while being twisted radially (see FIG. And a motor unit (not shown) that generates power for rotating the fin part.

  The blower 60 is arranged such that the rotation shaft 61 extends along the blowing direction of the purification flow path section 40. The blower 60 can cause the gas to flow through the purification flow path portion 40 by rotating the turbo fin portion around the rotation shaft 61. Further, the blower 60 can also suck external gas into the apparatus 1 and discharge purified gas from the apparatus 1 to the outside.

  In the example shown in FIGS. 4 to 6, the blower 60 is provided on the upstream side of the chemical filter 50. That is, the blower 60 is provided so as to block a gas inlet (not shown) formed at the upstream end 41 of the purification flow path section 40. Specifically, the purification flow path unit 40 has a front chamber 63 that houses the blower 60 on the upstream side of the chemical filter 50, and the upstream end 41 of the purification flow path unit 40 supports the blower 60. The part 62 is fixed. In addition, the blower 60 is independently supported by being separated from the chemical filter 50 by the support portion 62 in the front chamber 63.

  Further, the purification flow path section 40 further has a dust collection filter 70. As the dust collection filter 70, any filter can be selected and used depending on the purpose as long as it can remove particles of a desired type and size contained in the gas to be purified.

  That is, as the dust collection filter 70, a HEPA (High Efficiency Particle Air) filter or an ULPA (Ultra Low Penetration Air) filter can be used, and a HEPA filter can be preferably used. In the present embodiment, the dust collection filter 70 is a plate-like HEPA filter formed with a pleated structure.

  The dust collection filter 70 is provided on the downstream side of the chemical filter 50. That is, the dust collection filter 70 is erected so as to block an outlet (not shown) formed at the downstream end 42 of the purification flow path portion 40 in the blowing direction of the purification flow path portion 40. Specifically, the dust collection filter 70 is fixed to the downstream end 42 by a fixture 72 such as a bolt.

  Moreover, the purification flow path part 40 has the connection part 45 provided so that the chemical filter 50 and the dust collection filter 70 might be connected. The connecting portion 45 is a frame-like body that forms a gap between the chemical filter 50 and the dust collection filter 70.

  Thus, in the purification flow path part 40, the air blower 60, the chemical filter 50, and the dust collection filter 70 are provided in series at predetermined intervals in the air blowing direction. That is, in the present apparatus 1, the blower 60, the chemical filter 50, and the dust collection filter 70 are linearly provided independently of each other.

  And in the state in which the chemical filter 50 is installed in the purification flow path part 40 as shown in FIG. 5, the upper surface 64U of the front chamber 63, the upper side surface 53U of the chemical filter 50, the upper surface 46U of the connection part 45, The upper surface 71U of the dust collection filter 70 is disposed in close contact with each other, and as a whole, constitutes the upper surface 43U of one continuous purification flow path portion 40 extending along the blowing direction.

  Moreover, in this apparatus 1 shown in FIG.4 and FIG.5, the air blower 60 is arrange | positioned in the upstream of the chemical filter 50 and the dust collection filter 70. FIG. For this reason, in the purification | cleaning flow path part 40, the gas 60 can be effectively pumped through the chemical filter 50 and the dust collection filter 70 by the air blower 60.

  Moreover, this apparatus 1 is provided with the housing | casing part 10 which accommodates such a purification | cleaning flow path part 40 inside. The casing 10 is formed in a rectangular parallelepiped shape, and has an upper outer wall 11U, a left outer wall 11L, a right outer wall 11R, and a lower outer wall 11D as four outer walls extending along the purification flow path portion 40. That is, the upper outer wall 11U, the left outer wall 11L, the right outer wall 11R, and the lower outer wall 11D extend in the blowing direction in the purification flow path portion 40 at the upper, left, right, and lower sides of the purification flow path portion 40, respectively. ing.

  Moreover, the housing | casing part 10 has the front outer wall 11F and the rear outer wall 11B which are each arrange | positioned ahead of the purification | cleaning flow path part 40, and back. That is, the front outer wall 11F and the rear outer wall 11B are provided so as to block the downstream side and the upstream side of the purification flow path unit 40 in the blowing direction in the purification flow path unit 40, respectively. The end 42 and the upstream end 41 are disposed to face each other.

  Furthermore, an opening (not shown) is formed in the central portion of the front outer wall 11F, and a front plate 12 is provided so as to close the opening. Moreover, the housing | casing part 10 has lower outer wall 11D which supports the purification | cleaning flow path part 40 from the downward direction. A plurality of legs 13 for supporting the apparatus 1 from below are provided on the outer surface of the lower outer wall 11D.

  Further, the upper outer wall 11U and the front plate 12 are detachably provided. In other words, the upper outer wall 11U and the front plate 12 are respectively attached to other portions of the housing 10 by a reversible attachment mechanism such as screwing. For this reason, for example, the upper outer wall 11U and the front plate 12 can be removed from the housing portion 10 by releasing the attachment mechanism by removing a screw or the like.

  Therefore, in a state where the upper outer wall 11U covering the upper part of the purification flow path part 40 is removed from the housing part 10, the purification is performed by sliding the chemical filter 50 installed in the purification flow path part 40 upward. The chemical filter 50 can be taken out of the housing 10 from an opening portion of the housing portion 10 formed above the flow path portion 40.

  Similarly, in the open state of the upper outer wall 11U of the casing unit 10, the chemical filter 50 is moved from the outside of the casing unit 10 to a predetermined position of the purification flow path unit 40 through the opening of the casing unit 10. Can be attached to.

  On the other hand, in the state where the front plate 12 covering the front of the purification flow path part 40 is removed from the housing part 10, by removing the fixture 72 that fixes the dust collection filter 70 to the purification flow path part 40, The dust collection filter 70 can be taken out from the housing 10 through an opening formed in the front outer wall 11 </ b> F of the housing 10.

  Similarly, in the open state of the front plate 12 of the housing portion 10, the dust collection filter 70 is installed from the outside of the housing portion 10 to the downstream end 42 of the purification flow path portion 40 through the opening portion of the front outer wall 11F. can do.

  Further, on the outer surface of the front outer wall 11 </ b> F of the housing unit 10, a display unit 14 having a differential pressure gauge indicating a pressure state in the apparatus 1, an alarm indicator lamp for notifying abnormality, a power indicator lamp indicating an on / off state of the power source, and the like. Is provided. And as shown in FIG. 5, the electronic component 15 for operating the said display part 14 is provided in the inner surface of the front outer wall 11F corresponding to this display part 14. As shown in FIG. That is, the electronic component 15 is provided on the downstream side of the chemical filter 50. For this reason, in this apparatus 1, it can suppress effectively that the electronic component 15 is contaminated with the chemical contaminant contained in the gas made into purification | cleaning object.

  Each of the left outer wall 11L and the right outer wall 11R is provided with a left suction port portion 20L and a right suction port portion R for sucking gas from outside the housing portion 10 into the housing portion 10. . An opening is formed in the center of the left suction port portion 20L and the right suction port portion 20R, and a left pre-filter 21L and a right pre-filter 21R are provided so as to close the openings.

  A front discharge port portion 30F and an upper discharge port for discharging the gas purified by the chemical filter 50 from the inside of the housing portion 10 to the outside of the housing portion 10 are provided in a part of each of the front plate 12 and the upper outer wall 11U. A portion 30U is provided. A front opening 31F and an upper opening 31U are formed in the center of the front discharge port portion 30F and the upper discharge port portion 30U, respectively. The front opening 31F and the upper opening 31U are respectively provided with a front grill part 32F and an upper grill part 32U having a plurality of louvers.

  Here, as shown in FIGS. 2 and 4, the upper discharge port portion 30 </ b> U faces the upper side surface 53 </ b> U of the chemical filter 50 installed in the purification flow path portion 40 in the upper outer wall 11 </ b> U of the housing portion 10. It is provided in the position to do. That is, the upper discharge port portion 30U is provided immediately above the chemical filter 50.

  Furthermore, the upper discharge port portion 30U is provided so as to be openable and closable. That is, in the present embodiment, the upper grill portion 32U of the upper discharge port portion 30U is attached to the upper outer wall 11U by a reversible attachment mechanism such as screwing. For this reason, for example, the upper grill part 32U can be removed from the upper outer wall 11U and the upper discharge port part 30U can be opened by releasing the attachment mechanism by removing a screw or the like.

  In the open state of the upper discharge port portion 30U from which the upper grill portion 32U is removed, the upper opening 31U formed in the upper outer wall 11U is formed larger than the upper side surface 53U of the chemical filter 50. That is, the upper opening 31U is formed in a rectangular shape that is larger than the rectangular upper surface 53U of the chemical filter 50.

  Therefore, in the open state of the upper discharge port portion 30U, the chemical filter 50 installed in the purification flow path portion 40 is linearly slid upward to cause the chemical filter 50 to move above the upper discharge port portion 30U. It can be pulled out of the housing 10 from the opening 31U.

  Similarly, in the open state of the upper discharge port portion 30U, the chemical filter 50 is inserted from the outside of the housing portion 10 into a predetermined position of the purification flow path portion 40 through the upper opening 31U of the upper discharge port portion 30U. Can be installed.

  Further, the present apparatus 1 is provided between the purification flow path section 40 and the left outer wall 11L, the right outer wall 11R, and the rear outer wall 11B of the housing section 10, and the purification flow path section 40, the left suction port section 20L, and the right A suction flow path portion 80 that connects the suction port portion 20R is provided.

  The suction flow path portion 80 is provided around the purification flow path portion 40 in the housing portion 10. That is, the casing 10 has the purification flow from the front outer wall 11F to the position of the upstream end 41 of the purification flow path 40 on the left side of the left side wall 47L and the right side of the right side wall 47R. It has a left inner wall 16L and a right inner wall 16R that extend along the path portion 40.

  The left suction flow path 81L is provided between the left inner wall 16L and the left outer wall 11L of the housing portion 10, and the right suction flow path 81R is formed between the right inner wall 16R and the right outer wall 11R of the housing portion 10. It is provided in between. That is, the left suction channel 81L and the right suction channel 81R are respectively arranged in the air blowing direction of the purification channel unit 40 between the purification channel unit 40 and the left outer wall 11L and the right outer wall 11R of the housing unit 10. It extends. The left suction channel 81L and the right suction channel 81R communicate with the outside of the housing unit 10 via the left suction port 20L and the right suction port 20R, respectively.

  Further, the casing 10 extends in the vertical direction from the upper outer wall 11U to the lower outer wall 11D at the upstream end 41 of the purification flow path portion 40, and connects the upstream end of the left inner wall 16L and the upstream end of the right inner wall 16R. The rear inner wall 16B is provided. The rear suction flow path 81B is provided between the rear inner wall 16B and the rear outer wall 11B of the housing portion 10 so as to connect the left suction flow path 81L and the right suction flow path 81R, and is purified via the blower 60. It communicates with the inside of the flow path section 40. Thus, the suction flow path portion 80 is provided in a U shape (C shape) in plan view (see FIG. 4) so as to surround the left side, the right side, and the upstream side of the purification flow path portion 40. Yes.

  Further, the present apparatus 1 is provided between the purification flow path section 40 and the front outer wall 11F and front plate 12 and the upper outer wall 11U of the casing section 10, and the purification flow path section 40, the front discharge port section 30F and the upper A discharge flow path 90 that connects the discharge port 30U is provided.

  The discharge flow path section 90 is provided around the purification flow path section 40 in the housing section 10. That is, the front discharge flow path 91F is provided between the downstream end 42 of the purification flow path section 40 and the front outer wall 11F and the front plate 12 of the housing section 10, and the upper discharge flow path 91U is connected to the purification flow path section. Between the upper surface 43U of 40 and the upper outer wall 11U of the casing unit 10, the purification channel unit 40 is provided. The front discharge flow path 91F communicates with the inside of the purification flow path section 40 via the dust collection filter 70, and extends in the air blowing direction of the purification flow path section 40 connected to the downstream side of the front discharge flow path 91F. The upper discharge channel 91U communicates with the outside of the housing unit 10 through the upper discharge port 30U. As described above, the discharge flow path portion 90 is provided in an L shape in a side view (see FIG. 4) that is folded back from the downstream end 42 of the purification flow path portion 40 to the upstream side and extends along the purification flow path portion 40. It has been.

  Here, the upper surface 43U of the purification flow path portion 40 simultaneously constitutes an inner surface 92 of the upper discharge flow path 91U that extends in the blowing direction of the purification flow path portion 40 while facing the upper outer wall 11U. That is, in a state where the chemical filter 50 is installed in the purification flow path portion 40, the upper surface 64U of the front chamber 63, the upper side surface 53U of the chemical filter 50, the upper surface 46U of the connecting portion 45, and the dust collection filter 70 Each of the side surfaces 71U forms a different part of the inner surface 92 of the upper discharge channel 91U.

  The upper side surface 53U of the chemical filter 50 is a part of the inner surface 92 of the upper discharge channel 91U that faces the upper discharge port portion 30U provided on the upper outer wall 11U of the housing unit 10, that is, the upper discharge port portion. The part immediately below 30U is comprised.

  Therefore, the chemical filter 50 is inserted into a predetermined position of the purification flow path portion 40 through the upper outer wall 11U or the upper discharge port portion 30U in the open state, so that the upper side surface 53U of the chemical filter 50 remains as it is in the upper discharge flow path. A part of the inner surface 92 of 91 can be constituted. For this reason, since this apparatus 1 does not need to provide a special member in addition to the purification | cleaning flow path part 40 in order to provide the upper discharge flow path 91, it can be set as a compact structure.

  Further, in the present apparatus 1, the upper side surface 53 </ b> U of the chemical filter 50 is exposed in the upper discharge channel 91 provided between the upper outer wall 11 </ b> U and the purification channel unit 40. For this reason, in the present apparatus 1, the chemical filter 50 can be removed simply by moving the chemical filter 50 up and down across the upper discharge flow path 91F with the upper outer wall 11U or the upper discharge port portion 30U open. Or attachment can be performed simply and promptly.

  In this apparatus 1, when the blower 60 is operated, the gas outside the apparatus 1 (that is, the air in the room in which the apparatus 1 is installed) is supplied to the left inlet portion 20 </ b> L and the right inlet port. The air is sucked from the portion 20R into the housing portion 10 through the left pre-filter 21L and the right pre-filter 21R. The sucked gas flows into the rear suction channel 81B through the left suction channel 81L and the right suction channel 81R.

  The purification flow path section 40 sucks the gas flowing into the rear suction flow path 81B from the upstream end 41 via the blower 60. The sucked gas flows into the front chamber 63. The blower 60 pumps the gas flowing into the front chamber 63 and causes the gas to flow into the chemical filter 50 from the inflow surface 53 </ b> B of the chemical filter 50.

  The chemical filter 50 purifies the gas that has flowed into the chemical filter 50 with the functional material 52. That is, the chemical filter 50 scientifically processes the acidic substance contained in the gas passing through the inside thereof and effectively removes it from the gas. The gas purified by the chemical filter 50 flows out from the outflow surface 53F of the chemical filter 50 and flows into the space formed in the connecting portion 45 between the chemical filter 50 and the dust collection filter 70.

  The blower 60 further pumps the gas flowing into the connecting portion 45 and causes the gas to flow into the dust collection filter 70. The dust collection filter 70 purifies the gas flowing into the inside thereof. That is, the dust collection filter 70 captures the fine particles contained in the gas purified by the chemical filter 50 and effectively removes it from the gas. The gas purified by the dust collection filter 70 flows out of the dust collection filter 70.

  In this way, the purification flow path unit 40 causes the gas highly purified by the chemical filter 50 and the dust collection filter 70 to flow out of the purification flow path unit 40 from the downstream end 42. The purified gas that has flowed out of the purification flow path section 40 flows into the front discharge flow path 91F of the discharge flow path section 90.

  A part of the purified gas that has flowed into the front discharge channel 91F is discharged to the front outside the housing unit 10 from the front discharge port portion 30F, while the other part is upward in the front discharge channel 91F. And flows into the upper discharge channel 91F. That is, a part of the purified gas is folded back from the downstream side to the upstream side of the purification flow path portion 40 and flows into the upper discharge flow path 91F, and the inside of the upper discharge flow path 91F is directed from the front to the rear of the apparatus 1. In other words, it circulates in the direction opposite to the blowing direction of the purification flow path section 40.

  Then, the purified gas that has flowed into the upper discharge channel 91F is finally discharged from the upper discharge port portion 30U to the upper portion outside the housing portion 10. As described above, the present apparatus 1 can continuously perform the purification process of purifying the air in the room in which the present apparatus 1 is installed and supplying the purified gas into the room. .

  Furthermore, in the present apparatus 1, the chemical filter 50 can be easily replaced. That is, when the chemical filter 50 is taken out from the apparatus 1 through the upper discharge port portion 30U, the operator first removes the upper grill portion 32U (see FIG. 2) of the upper discharge port portion 30U from the upper outer wall 11U. It removes and the said upper discharge port part 30U is made into an open state (refer FIG. 6).

  Next, the operator puts his hand into the housing 10 from the upper opening 31U of the upper discharge port 30U, and the chemical filter 50 installed in the purification flow path 40 immediately below the upper discharge port 30U. Is pulled upward along the inflow surface 53B and the outflow surface 53F.

  Then, the operator further linearly slides the chemical filter 50 upward so as to cross the upper discharge flow path 91U, and the chemical filter 50 is moved from the upper opening 31U of the upper discharge port portion 30U to the housing portion 10. It can be taken out outside.

  On the contrary, when the worker attaches the chemical filter 50 to the apparatus 1 via the upper discharge port portion 30U, first, the upper discharge port portion 30U is opened, and the upper discharge port portion 30U is opened from the upper opening 31U. Then, the chemical filter 50 is inserted into the housing unit 10.

  Then, the operator inserts the chemical filter 50 into the housing portion 10 so as to cross the upper discharge passage 91U, and linearly slides downward along the guide portions 44L and 44R of the purification passage portion 40. By doing so, the chemical filter 50 can be fitted into the middle portion of the purification flow path portion 40 immediately below the upper discharge flow path 91U. The upper side surface 53U of the chemical filter 50 installed in the purification flow path portion 40 constitutes a part of the inner surface 92 of the upper discharge flow path 91U as it is.

  Such a replacement operation of the chemical filter 50 is not only when removing the upper discharge port 30U provided in a part of the upper outer wall 11U, but also when removing the upper outer wall 11U itself. The same can be done via 11U. Further, in the present apparatus 1, such a chemical filter 50 replacement operation can be performed even during the operation of the blower 60.

  As described above, the apparatus 1 has a compact configuration that can effectively purify the gas, and can easily and quickly replace the chemical filter 50. For example, workability can be further improved by providing a handle portion (not shown) having an appropriate shape on which the operator can hook the hand on the upper side surface 53U of the chemical filter 50.

  In the present apparatus 1, the blower 60 is provided separately from both the chemical filter 50 and the rear outer wall 11 </ b> B of the housing unit 10. For this reason, in this apparatus 1, the vibration of the housing | casing part 10 accompanying the action | operation of the air blower 60 can be suppressed effectively.

  Further, the present apparatus 1 sucks air in the room from the left and right sides of the casing 10 and cleans the air highly purified by the chemical filter 50 and the dust collection filter 70 in front and above the casing 10. Can be discharged. For this reason, for example, by arranging the apparatus 1 so that the rear outer wall 11B of the casing unit 10 is along a part of the inner surface of the wall constituting the room, the apparatus 1 can be compactly provided at the corner of the room. While being able to arrange | position, the highly purified air can be effectively supplied in the said room.

  Moreover, this apparatus 1 performs the purification | cleaning by the chemical filter 50 in one step. That is, the present apparatus 1 is provided with an integrally configured chemical filter 50 in one place of the purification flow path section 40, purifies the external gas with the chemical filter 50, and the purified gas that has once passed through the chemical filter 50. Is discharged out of the apparatus 1 in one pass. For this reason, the structure of this apparatus 1 can be made compact.

  Moreover, in this apparatus 1, the air blower 60, the chemical filter 50, and the dust collection filter 70 are arrange | positioned on the straight line. For this reason, this apparatus 1 can make the structure compact.

  FIG. 7 shows a cross-sectional view of another example of the apparatus 1 as viewed from above. In the present apparatus 1 shown in FIG. 7, at least one of the left suction port portion 20L and the right suction port portion 20R is provided to be openable and closable. Further, the chemical filter 50 has a left side surface 53L that constitutes a part of the inner surface 82L of the left suction channel 81L that faces the left suction port 20L, and a right side surface 53R that is the inner surface of the right suction channel 81R. A part of the 82R facing the right inlet 20R is configured.

  The chemical filter 50 is detachably provided so that the chemical filter 50 can be pulled out of the housing 10 through the left suction port 20L or the right suction port 20R in the open state. That is, in this example, in the state where the chemical filter 50 is installed in the purification flow path portion 40, the left side surface 64L and the right side surface 64R of the front chamber 63, the left side surface 53L and the right side surface 53R of the chemical filter 50, The left side surface 46L and the right side surface 46R of the connecting portion 45 and the left side surface 71L and the right side surface 71R of the dust collection filter 70 are disposed in close contact with each other, and as a whole, each air blowing direction (indicated by the arrow X shown in FIG. 7). The left side surface 43L and the right side surface 43R of the continuous purification flow path portion 40 extending along the direction) are configured.

  The left side surface 43L and the right side surface 43R of the purification flow path portion 40 also constitute an inner surface 82L of the left suction channel 81L and an inner surface 82R of the right suction channel 81R that face the left outer wall 11L and the right outer wall 11R, respectively. ing.

  On the other hand, the left suction port portion 20L and the right suction port portion 20R are respectively a left side surface 53L and a right side surface of the chemical filter 50 installed in the purification flow path portion 40 of the left outer wall 11L and the right outer wall 11R of the housing unit 10. It can be opened and closed at a position facing the surface 53R. For this reason, in the open state of the left suction port 20L or the right suction port 20R, the chemical filter 50 installed in the purification flow path 40 is linearly leftward or rightward along the inflow surface 53B and the outflow surface 53F. The chemical filter 50 can be pulled out of the housing 10 through the left suction port 20L or the right suction port 20R.

  Similarly, the chemical filter 50 can be inserted and installed in the purification flow path portion 40 in the housing portion 10 via the left suction port portion 20L or the right suction port portion 20R in the open state. Further, by providing at least one of the left outer wall 11L and the right outer wall 11R of the housing part 10 so as to be openable and closable, the chemical filter 50 can be replaced through an opening formed on the left or right side of the housing part 10. Work can be done as well.

[Example]
Next, a specific example of the purification process by the apparatus 1 will be described. In this example, the present apparatus 1 according to the example shown in FIGS. 1 to 6 was prepared. The casing 10 has a rectangular parallelepiped shape with a vertical length of 800 mm, a horizontal length of 800 mm, and a longitudinal length of 480 mm. Each of the left suction port portion 20L and the right suction port portion 20R has a vertical length of 660 mm and a front-back direction length of 160 mm. The vertical length of the front outlet 30F and the length of the upper outlet 30U in the front-rear direction are both 160 mm, and the horizontal length of the front outlet 30F and the upper outlet 30U are both 640 mm. there were.

  In this apparatus 1, a chemical filter (chemical guard AX, manufactured by NICHIAS Corporation) filled with a mold structure for removing an acidic substance as a functional material 52 was used as the chemical filter 50. The chemical filter 50 had a vertical length of 600 mm, a horizontal length of 600 mm, and a longitudinal length (a thickness of the purification flow path portion 40 in a blowing direction length) of 100 mm.

  Further, as the dust collection filter 70, a PTFE (Polytetrafluorethylene) HEPA filter was used. The dust collection filter 70 had a vertical length of 600 mm, a horizontal length of 600 mm, and a longitudinal length (a thickness of the purification flow path portion 40 in the blowing direction) of 50 mm. Further, as the pre-filters 21L and 21R, nonwoven fabric coarse dust filters were used. The prefilters 21L and 21R each had a vertical length of 585 mm, a longitudinal length of 155 mm, and a lateral length (thickness) of 10 mm.

This device 1 was installed in a room having a volume of 78.3 m ³ . The gas to be purified was air in a room at a temperature of 25 ° C. and a relative humidity of 50% RH (relative humidity) containing hydrogen sulfide gas and chlorine gas at a concentration of 1 ppm.

  And when this apparatus 1 purifies this air at a processing speed at which the room is ventilated three times per hour, hydrogen sulfide gas and chlorine gas contained in the purified gas discharged from the front outlet 30F Was measured by chromatography, and 80% removal expected life was evaluated.

  The flow velocity of the gas passing through the chemical filter 50 is 0.3 m / second per unit area, and the flow velocity of the gas discharged from the front discharge port portion 30F and the upper discharge port portion 30U is the unit area of the opening portion, respectively. 1.1 m / sec and 0.6 m / sec.

Moreover, the 80% removal prediction lifetime of the chemical filter 50 was evaluated by the following method. That is, the predicted life of 80% removal is obtained when the concentration C _i (μg / m ³ ) of hydrogen sulfide gas or chlorine gas in the air before passing through the chemical filter 50 is 100%. As a result, the concentration C _o (μg / m ³ ) of hydrogen sulfide gas or chlorine gas remaining in the purified air after passing through the chemical filter 50 is increased to 20%. It was evaluated as the use time until it becomes (use time until the removal rate of hydrogen sulfide gas or chlorine gas is reduced to 80%). Specifically, the predicted removal life of 80% is based on Fick's law using the surface area effective for gas purification in the chemical filter 50, the mass transfer coefficient of hydrogen sulfide gas or chlorine gas, etc. in addition to the above measurement conditions. Based on the theoretical model formula of the diffusion phenomenon, it was calculated by numerical analysis using the difference method. The removal rate (%) of hydrogen sulfide gas or chlorine gas was determined by the following formula (I).

  As a result, the hydrogen sulfide gas concentration and the chlorine gas concentration contained in the purified gas discharged from the front discharge port 30F were both 25 ppb (parts per billion). In addition, the expected lifetime for 80% removal was 3.5 months.

  In addition, this apparatus 1 is not restricted to the example mentioned above. That is, for example, in the present apparatus 1, the outer wall of the casing 10 that can be opened and closed in order to replace the chemical filter 50, or the gas purified by the chemical filter 50 is sucked from the outside of the casing 10. The opening for discharging to the outside of the casing 10 is not limited to the above-described example, and at least a part of the outer wall of the casing 10 or at least a part of the opening can be arbitrarily opened and closed. it can. Further, the number, shape, position, and size of the openings are not limited to the above-described example, and can be appropriately set.

  Further, in the present apparatus 1, the opening provided in a part of the outer wall of the housing 10 can be opened and closed like the upper discharge port 30U, the left suction port 20L, and the right suction port 20R in the above example. For example, it can be opened and closed by rotating around a hinge provided on a part of the outer wall.

  In the present apparatus 1, the chemical filter 50 may be provided on the upstream side of the blower 60 and the dust collection filter 70 may be provided on the downstream side of the blower 60 in the blowing direction of the purification flow path section 40. That is, in this case, the chemical filter 50 is provided so as to block the upstream end 41 of the purification flow path portion 40, and the dust collection filter 70 is provided so as to close the downstream end 42 of the purification flow path portion 40, and the blower 60 is provided between the chemical filter 50 and the dust collection filter 70. Therefore, in this case, the blower 60 can be effectively prevented from being contaminated by chemical contaminants contained in the gas to be purified, and the blower 60 can be effectively pumped to the dust collection filter 70. it can.

  Moreover, the combination of the chemical filter 50 and the dust collection filter 70 is not restricted to the above-mentioned example, It can set arbitrarily according to the objective. Further, at least one of the upstream side and the downstream side of the blower 60 of the purification flow path 40 is appropriately provided with a baffle plate for suppressing the occurrence of drift when gas passes through the chemical filter 50 and the dust collection filter. It can also be installed.

It is a front view about an example of the gas purification apparatus concerning this embodiment. It is a top view about an example of the gas purification apparatus concerning this embodiment. It is a left view about an example of the gas purification apparatus which concerns on this embodiment. It is an example of sectional drawing which cut | disconnected the gas purification apparatus which concerns on this embodiment with the AA line shown in FIG. It is an example of sectional drawing which cut | disconnected the gas purification apparatus which concerns on this embodiment by the BB line shown in FIG. It is sectional drawing which shows a part of process of the attachment or detachment operation of a chemical filter about an example of the gas purification apparatus which concerns on this embodiment. It is sectional drawing about the other example of the gas purification apparatus which concerns on this embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Gas purification apparatus, 10 Housing | casing part, 11F Front outer wall, 11U Upper outer wall, 11L Left outer wall, 11R Right outer wall, 11B Rear outer wall, 11D Lower outer wall, 12 Front board, 13 Foot part, 14 Display part, 15 Electronic component, 16L left inner wall, 16R right inner wall, 16B rear inner wall, 20L left inlet port, 20R right inlet port, 21L left prefilter, 21R right prefilter, 30F front outlet port, 30U upper outlet port, 31F front opening, 31U upper opening, 32F front grille part, 32U upper grille part, 40 purification flow path part, 41 upstream end, 42 downstream end, 43U top face, 43L left side face, 43R right side face, 44 guide part, 45 connecting part, 46U top face, 46L left side, 46R right side, 47L left side wall, 47R right side wall, 50 chemical filter, 51 frame, 52 functional material, 53U upper side 53B Inflow surface, 53F Outflow surface, 53L Left side, 53R Right side, 60 Blower, 61 Rotating shaft, 62 Support part, 63 Front chamber, 64U Top surface, 64L Left side, 64R Right side, 70 Dust collection filter, 71U Upper side , 71L Left side, 71R Right side, 72 Mounting member, 80 Suction channel, 81L Left suction channel, 81R Right suction channel, 81B Rear suction channel, 82L Left inner surface, 82R Right inner surface, 90 Drain channel unit , 91F Pre-discharge channel, 91U Upper discharge channel, 92 Inner surface.

Claims (5)

A purification flow path section that has a chemical filter for purifying gas, purifies the gas flowing in from the upstream end by the chemical filter, and causes the purified gas to flow out from the downstream end;
A housing portion that houses the purification flow path portion;
Provided in a part of an outer wall extending along the purification flow path portion of the casing portion, sucks gas from outside the casing portion or discharges gas purified by the chemical filter to the outside of the casing portion. An opening for
A communication flow path provided between the purification flow path and the outer wall of the housing, and connecting the purification flow path and the opening;
With
The chemical filter has a side surface that constitutes a part of the inner surface of the communication channel portion, and is detachable so that the chemical filter can be pulled out of the housing unit from the purification channel unit across the communication channel unit. The gas purification apparatus characterized by the above-mentioned. The opening is provided to be openable and closable at a position facing the side surface of the chemical filter in the outer wall of the casing.
The gas purification apparatus according to claim 1, wherein the chemical filter is detachably provided so as to be drawn out of the casing through the opening in the open state. The outer wall of the housing part is provided above the purification flow path part,
The opening is a discharge port for discharging the gas purified by the chemical filter,
The gas purification device according to claim 1 or 2, wherein the chemical filter can be drawn upward through the opening in the open state. The gas purification device according to any one of claims 1 to 3, wherein the purification flow path unit has a blower upstream of the chemical filter and a dust collection filter downstream of the chemical filter. . The gas purification apparatus according to any one of claims 1 to 4, wherein the gas purification apparatus is an indoor installation type installed in a room to which gas purified by the chemical filter is to be supplied.

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