WO2018088310A1 - 除湿エレメント及びそれを有する除湿装置 - Google Patents

除湿エレメント及びそれを有する除湿装置 Download PDF

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Publication number
WO2018088310A1
WO2018088310A1 PCT/JP2017/039658 JP2017039658W WO2018088310A1 WO 2018088310 A1 WO2018088310 A1 WO 2018088310A1 JP 2017039658 W JP2017039658 W JP 2017039658W WO 2018088310 A1 WO2018088310 A1 WO 2018088310A1
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WIPO (PCT)
Prior art keywords
dehumidifying
air
cylindrical case
space
hollow fiber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2017/039658
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English (en)
French (fr)
Japanese (ja)
Inventor
尾原正昭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMC Corp
Original Assignee
SMC Corp
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Filing date
Publication date
Application filed by SMC Corp filed Critical SMC Corp
Priority to KR1020197013660A priority Critical patent/KR102432606B1/ko
Priority to US16/342,583 priority patent/US11141693B2/en
Priority to CN201780068586.7A priority patent/CN109922874B/zh
Priority to EP17869975.7A priority patent/EP3539643B1/en
Publication of WO2018088310A1 publication Critical patent/WO2018088310A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26—Drying gases or vapours
    • B01D53/268—Drying gases or vapours by diffusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
    • B01D53/228—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion characterised by specific membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/02—Hollow fibre modules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/02—Hollow fibre modules
    • B01D63/04—Hollow fibre modules comprising multiple hollow fibre assemblies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
    • B01D2053/221—Devices
    • B01D2053/223—Devices with hollow tubes
    • B01D2053/224—Devices with hollow tubes with hollow fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/80—Water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/08—Flow guidance means within the module or the apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/19—Specific flow restrictors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/20—Specific housing
    • B01D2313/201—Closed housing, vessels or containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/21—Specific headers, end caps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/44—Cartridge types
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2315/00—Details relating to the membrane module operation
    • B01D2315/22—Membrane contactor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F2003/1435—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification comprising semi-permeable membrane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F2003/144—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by dehumidification only

Definitions

  • the present invention relates to a dehumidifying element using a hollow fiber membrane and a dehumidifying device having the dehumidifying element.
  • the dehumidified air As a dehumidifying device for dehumidifying the dehumidified air and supplying it to a fluid pressure device or the like, the dehumidified air is circulated in the hollow fiber membrane, and the water vapor contained in the dehumidified air is outside the hollow fiber membrane. Conventionally, it is known to dehumidify the air to be dehumidified by allowing the permeated water vapor to be discharged to the outside using purge air.
  • Patent Document 1 and Patent Document 2 a plurality of hollow fiber membranes are accommodated in a cylindrical case of a dehumidifying element, and air to be dehumidified is circulated in the hollow fiber membrane, and the cylindrical shape
  • a dehumidifying device that dehumidifies dehumidified air by supplying and discharging purge air into and from the case is disclosed.
  • the dehumidifying element has a circular or annular cross section formed in the cylindrical case of the dehumidifying element.
  • the plurality of hollow fiber membranes are accommodated in a twisted state.
  • the bent hollow fiber membranes are unevenly distributed in a state where they are in close contact with each other, and the flow of purge air tends to be uneven. And when such a state arises, it becomes impossible to ensure sufficient contact area of purge air and a hollow fiber membrane, As a result, the dehumidification effect will also fall.
  • the technical problem of the present invention is to reduce the dehumidification efficiency by suppressing the uneven distribution of the hollow fiber membrane in the dehumidifying space in the cylindrical case in the dehumidifying element using the hollow fiber membrane and the dehumidifying device having the same. It is to prevent.
  • a dehumidifying element includes a hollow cylindrical case having cylindrical openings at both ends in the axial direction, and dehumidified air accommodated in the axial direction inside the cylindrical case.
  • Inside the cylindrical case a dehumidification space formed so as to be interposed between the pair of potting materials, an air supply hole for supplying purge air to the dehumidification space, and the purge air from the dehumidification space
  • a dehumidifying element having an exhaust hole for discharging air, wherein the dehumidifying space in the cylindrical case is provided with a guide member that divides the dehumidifying space into a plurality of regions around the axis.
  • the plurality of hollow fiber membrane is characterized in that it is accommodated in a space for wet ⁇ each distributed
  • the air supply hole is opened at a position closer to one potting material side than the axial center in the dehumidifying space, and the exhaust hole is from the axial center in the dehumidifying space. Is also located near the other potting material side.
  • the air supply hole and the exhaust hole may be provided in the cylindrical case.
  • the exhaust hole preferably has a larger diameter than the air supply hole.
  • a plurality of the guide members are arranged in a radial direction around the axis.
  • the guide member is a guide plate extending in the axial direction of the cylindrical case.
  • the pair of the air supply hole and the exhaust hole is respectively opened in a region divided by the plurality of guide plates, and more preferably, the plurality of guide plates are the entire dehumidifying space. Extending in the axial direction.
  • a hollow inner tube having tube openings at both ends is accommodated along the axial direction in the cylindrical case, and both end portions of the inner tube penetrate the potting material.
  • the dehumidifying space may be formed between the inner casing and the cylindrical case.
  • a cap member is attached to the axial end of the cylindrical case, and the cap member has an introduction port for inputting the dehumidified air from the outside. And having an introduction flow path for supplying dehumidified air from the introduction port to one of the cylinder openings, and a lead-out port for outputting the dehumidified dry air to the outside, A lead-out flow path for leading the dry air from the other of the cylindrical openings to the lead-out port, and a purge flow branched from the lead-out flow path and supplying a part of the dry air as the purge air to the air supply holes A road is provided.
  • the guide member arranged to form a plurality of regions in the dehumidifying space in the cylindrical case when viewed from the axial direction of the cylindrical case.
  • a plurality of hollow fiber membranes for circulating dehumidified air are accommodated in the dehumidifying space in a state of being distributed to the plurality of regions. Therefore, the uneven distribution of the hollow fiber membrane in the dehumidifying space can be suppressed, and a larger contact area between the purge air and the hollow fiber membrane can be secured, and as a result, the dehumidification efficiency can be prevented from being lowered.
  • FIG. 5 is a schematic cross-sectional view along the line VLV in FIG. 4.
  • FIG. 6 is a schematic cross-sectional view taken along line VI-VI in FIG. 5.
  • a dehumidifying device 50 includes a dehumidifying element 1 having a hollow fiber membrane 3 for dehumidifying dehumidified air, and airtight and opposite ends of the dehumidifying element 1 in the axial direction. It has the 1st cap member 51 and the 2nd cap member 52 which were attached so that attachment or detachment was possible.
  • the first cap member 51 is formed with an introduction flow path 55 having an introduction port 53 and a lead-out flow path 56 having a lead-out port 54, and high-humidity dehumidified air input to the introduction port 53 from the outside. Is supplied to the dehumidifying element 1 through the introduction channel 55, and the dry air dehumidified by the dehumidifying element 1 is output from the outlet port 54 to the outside through the outlet channel 56. Yes.
  • the first cap member 51 extends downward from the side wall of the dehumidifying element 1 on the outer peripheral surface on one end side (upper end side in the drawing), that is, on the one end side of the cylindrical case 2.
  • An annular mounting wall 57 that covers the outer peripheral surface in an airtight manner is integrally provided.
  • a dehumidifying element is formed between the mounting wall 57 and the dehumidifying element 1 (cylindrical case 2) by branching from the outlet channel 56 and using a part of the dry air as purge air having a lower humidity than the dehumidified air.
  • An annular purge flow path 58 for supplying the gas to the inside 1 is formed.
  • An orifice 59 is provided between the outlet channel 56 and the purge channel 58 to reduce the purge air flowing from the outlet channel 56 to the purge channel 58 below the pressure of the dry air flowing through the outlet channel 56.
  • a variable orifice is preferably arranged.
  • the dehumidifying element 1 is a hollow cylindrical cylindrical case 2 extending in the axis L direction, and is accommodated in the cylindrical case 2 along the axis L direction.
  • a plurality of hollow fiber membranes 3 and a hollow inner tube 4 having a smaller diameter than the cylindrical case 2 and coaxially accommodated in the cylindrical case 2 are provided.
  • the cylindrical case 2 has a first cylindrical opening 21 at the first end 23 at one end in the direction of the axis L, and a second cylindrical opening 22 at the second end 24 at the other end.
  • the inner tube 4 has a first tube opening 41 at a first end 43 at one end in the axis L direction and a second tube opening 42 at a second end 44 at the other end.
  • the first and second cylinder openings 21 and 22 are provided between the first end 23 of the cylindrical case 2 and the first end 43 of the inner casing 4 and the An annular shape is formed between the second end 24 of the cylindrical case 2 and the second end 44 of the inner tube 4.
  • the first end 23 of the cylindrical case 2 is provided with a first potting material 5 having an annular cross section that fits into the first cylindrical opening 21 and closes the first cylindrical opening 21.
  • a second potting material 6 having an annular cross section that is fitted into the second cylinder opening 22 and closes the second cylinder opening 22 is provided at the second end 24 of the cylindrical case 2.
  • a first end 33 of the hollow fiber membrane 3 is fixed to the first potting material 5 by penetrating in the direction of the axis L and reaching the first tube opening 21, and The first end portion 43 is also fixed by penetrating airtightly in the direction of the axis L.
  • the second potting material 6 is fixed by the second end portion 34 of the hollow fiber membrane 3 penetrating in the direction of the axis L and reaching the second tube opening portion 21, and the inner tube 4. Similarly, the second end portion 44 is fixed by penetrating airtightly in the direction of the axis L.
  • a space extending in the direction of the axis L from the first potting material 5 to the second potting material 6 between the inner surface of the cylindrical case 2 and the outer surface of the inner tube 4 is a plurality of hollow fibers accommodated therein.
  • the membrane 3 forms a dehumidifying space 7 having an annular cross section for dehumidifying the air to be dehumidified.
  • a plurality of guide plates (eight in this embodiment) as guide members 47 are arranged radially. These guide members 47 are for arranging the plurality of hollow fiber membranes 3 in the space 7 in a plurality of bundles so as not to be unevenly distributed, as shown in FIG.
  • the interior of the space 7 is partitioned into a plurality of (eight in the present embodiment) regions in the circumferential direction by the plurality of guide members 47.
  • these guide plates 47 are formed in a rectangular shape in which the axial direction L of the cylindrical case 2 is the longitudinal direction and the radial direction is the short direction, and the entire dehumidifying space 7 is viewed from the axial L direction. When viewed, they are arranged in the radial direction at equal angular intervals, whereby a plurality (eight in this embodiment) of fan-shaped regions having substantially the same area are formed in the dehumidifying space 7.
  • the plurality of hollow fiber membranes 3 are divided into substantially equal bundles that are not twisted, and the bundles of the hollow fiber membranes 3 are respectively arranged in the plurality of regions.
  • the widths of the guide plates 47 in the short direction are slightly smaller than the distance between the inner wall of the cylindrical case 2 and the outer wall of the inner tube 4.
  • a slight gap 49 is formed between both ends in the direction and the inner wall of the cylindrical case 2 and the outer wall of the inner tube 4.
  • the gap 49 does not necessarily have to be formed as long as a pair of a purge air supply hole 35 and an exhaust hole 36, which will be described later, is formed in each of the above regions as in this embodiment.
  • the plurality of guide plates 47 are attached to the cylindrical case 2 and the inner tube 4 in an airtight manner on the inner walls of the first end portion 23 and the second end portion 24 of the cylindrical case 2.
  • the outer rings 25a and 25b and the inner rings 45a and 45b that are airtightly fitted to the outer walls of the first end 43 and the second end 44 of the inner tube 4 are formed. That is, as shown in FIGS. 4 and 5, a plurality of (in this embodiment) the inner circumferences of the outer rings 25 a and 25 b extend in the circumferential direction (around the axis L) and are adjacent in the vertical direction (axis L direction).
  • Two annular grooves 26a and a plurality of (same number as the guide plate 47) positioning grooves 26b extending in the vertical direction and adjacent in the circumferential direction are formed, respectively.
  • a plurality of annular grooves 46a extending in the direction and adjacent in the vertical direction, and a plurality of positioning grooves 46b extending in the vertical direction and adjacent in the circumferential direction are formed.
  • the positioning grooves 26b of the outer rings 25a and 25b and the positioning grooves 46b of the inner rings 45a and 45b are formed to face each other at the same angular position with the axis L as the center.
  • the outer rings 25a and 25b and the inner rings 25a and 45b having such a configuration are formed by the first and second potting materials 5 and 6 entering the annular grooves 26a and 46a.
  • the outer peripheral wall and the inner peripheral wall are respectively fitted in the state of being locked in the direction of the axis L. 4 and 5, the first end 47a at one end in the longitudinal direction and the second end 47b at the other end of the guide plate 47 are embedded in the potting materials 5 and 6, and each end
  • the guide plates 7 are positioned radially as described above by fitting both end portions in the width direction of the portions 47a and 47b into the positioning grooves 26b and 46b of the outer rings 25a and 25b and the inner rings 45a and 45b. In the state, it is fixed by the potting materials 5 and 6. As a result, in the present embodiment, the guide plate 47 is extended across the entire direction of the axis L of the dehumidifying space 7.
  • annular step portions 23a, 24a are formed on the inner side walls of the first and second end portions 23, 24 of the cylindrical case 2, respectively, and the outer ring 25a, 25b is respectively fitted.
  • the guide plate 47 may be formed integrally with the inner tube 4, for example.
  • the inner rings 45a and 46b are not necessarily provided.
  • the dehumidifying element 1 is connected to the purge flow path 58 for supplying purge air to the dehumidifying space 7 and for discharging the purge air from the dehumidifying space 7 to the outside.
  • the exhaust holes 36 are respectively opened on one end side and the other end side in the axis L direction of the dehumidifying space 7.
  • the air supply hole 35 and the lead-out hole 36 are provided in the cylindrical case 2, and the center O in the axis L direction of the dehumidifying element 1 (that is, the center O in the axial direction of the dehumidifying space 7). It is opened between the first potting material 5 and between the center O and the second potting material 6.
  • a pair of the conduction hole 35 and the exhaust hole 36 is opened at equal angular intervals (45 degrees interval in the present embodiment) in the circumferential direction of the cylindrical case 2, thereby the plurality of guide plates 47.
  • a pair of the conduction holes 35 and the exhaust holes 36 are provided in a plurality of regions (eight regions in this embodiment) formed in the dehumidifying space 7.
  • the exhaust hole 36 has a larger diameter, that is, a larger area than the air supply hole 35, thereby preventing an increase in the pressure of the purge air flowing through the dehumidifying space 7.
  • the dehumidifying efficiency of the dehumidifying element 1 is improved.
  • the sizes of the air supply holes 35 and the exhaust holes 36 are not necessarily different, and may be the same size.
  • a connecting rod 61 for fixing the first and second cap members 51 and 52 to the dehumidifying element 1 is inserted into the inner tube 4 in the axis L direction.
  • a first male screw portion 62 and a second male screw portion 63 are formed at one end and the other end of the connecting rod 61 in the axis L direction.
  • the first cap member 51 has a first female threaded portion 64 formed on the inner surface side thereof, and the second cap member 52 is formed in an annular shape.
  • the female screw portion 65 of the fastening bolt 66 provided with two female screw portions 65 is inserted.
  • first male screw portion 62 of the fastening rod 61 is screwed to the first female screw portion 64
  • second male screw portion 63 is screwed to the second female screw portion 65, so that the fastening bolt
  • the first and second cap members 51 and 52 and the dehumidifying element 1 are fastened together by being tightly fastened at 66.
  • the introduction channel 55 formed in the first cap member 51 is connected to the first tube opening 41 of the inner tube 4 provided in the dehumidifying element 1.
  • a concave portion is formed on the inner surface side of the second cap member 52, and the second pipe opening portion 42 of the inner pipe 4 is formed by the connection flow path 60 formed by the concave portion. It is connected to the second cylinder opening portion 22 at a position adjacent to the portion 42 in the radial direction and in which the plurality of hollow fiber membranes 3 are opened.
  • the purge flow path 58 branched from the outlet flow path 56 is connected to the dehumidification space 7 through the air supply holes 35, and at the same time, the dehumidification space 7 is connected to the exhaust gas.
  • the hole 36 is open to the atmosphere.
  • the dehumidifying device 50 having such a flow path configuration, the high-humidity to be dehumidified flowing into the introduction flow path 55 from a pipe (not shown) connected to the introduction port 53 of the first cap member 51. Air is guided to the connection flow path 60 of the second cap member 52 through the inner tube 4. Next, the dehumidified air is reversed in the connection flow path 60 and introduced into the plurality of hollow fiber membranes 3 from the second cylinder opening 22 of the dehumidifying element 1, During the flow, the dehumidification space 7 is dehumidified by the water vapor partial pressure difference (water vapor concentration difference) with the purge air flowing around the hollow fiber membrane 3.
  • water vapor partial pressure difference water vapor concentration difference
  • the dehumidified dry air flows out from the first cylinder opening 21 of the dehumidifying element 1 to the outlet channel 56 and is connected to the outlet port 54 through a pipe (not shown) to obtain a desired pneumatic device or the like. Is output. Further, a part of the dehumidified dry air flowing through the outlet channel 56 is branched from the outlet channel 56 as the purge air, and is depressurized by the orifice 59, and then the purge channel 58 and the air supply hole 35. To the dehumidifying space 7 of the dehumidifying element 1.
  • the purge air removes water vapor of the dehumidified air that has permeated to the outside of the hollow fiber membrane 3 while flowing in the dehumidifying space along the axis L, and then passes through the exhaust hole 36 to the atmosphere. Is exhausted.
  • the dehumidifying space 7 is divided into the same number (eight in this embodiment) of regions by a plurality of (eight in this embodiment) guide plates 47 arranged in a radial pattern.
  • the plurality of hollow fiber membranes 3 are accommodated in a substantially equally distributed manner in each of these regions. Therefore, uneven distribution of the hollow fiber membrane 3 in the dehumidifying space 7 can be suppressed, and a larger contact area between the purge air and the hollow fiber membrane 3 can be secured.
  • the water vapor of the dehumidified air that has permeated to the outside of the hollow fiber membrane 3 can be more efficiently removed by the purge air, and a reduction in dehumidification efficiency can be prevented.
  • the pairs of the air supply holes 35 and the exhaust holes 36 are provided in each region formed by the guide plate 47, the flow of the purge air is made more uniform, and the water vapor is more efficiently removed and discharged. Is possible.
  • the dehumidifying element 1 using a plurality of guide plates 47 extending in the radial direction as the guide member has been described.
  • the guide member has the axis L as the entire dehumidifying space 7 of the cylindrical case 2.
  • Other configurations may be employed as long as they are arranged so as to form a plurality of regions in the dehumidifying space 7 when viewed from the direction.
  • the guide member 47 has a rod-like shape standing from the outer wall of the inner tube 4 spirally along the axis L direction so that the dehumidifying space 7 is radially arranged when viewed from the axis L direction.
  • the plurality of hollow fiber membranes 3 can be distributed and accommodated in a plurality of regions formed by guide pins adjacent to each other when viewed from the direction of the axis L. As a result, the uneven distribution of the hollow fiber membrane 3 in the dehumidifying space 7 can be suppressed.
  • a pair of air supply holes 35 and exhaust holes 36 for supplying and discharging purge air to and from the dehumidifying space 7 is provided for each region divided by the guide plate 47. 7, if the flow of the purge air between the regions and the smooth supply / discharge of the purge air from the air supply holes 35 and the exhaust holes 36 are sufficiently ensured, the number of pairs of these holes 35 and 36 is set in the above region. The number may be less than the number, or the number of the holes 35 and 36 may be different from each other.
  • the first cap member 51 is provided with both the introduction channel 55 for the air to be dehumidified and the lead-out channel 56 for the dry air, but the introduction channel 55 and the lead-out flow are provided in the first cap member 51.
  • Any one of the channels 56 may be provided, and any one of the other channels may be provided in the second cap member 52.
  • the inner tub 4 may be omitted, or the inner tub 4 is used as the purge flow path 58 by closing one end of the inner ring 4 in an airtight manner.
  • the purge ring air supply hole 35 may be provided in the inner ring 4.
  • the cap members 51 and 52 may not necessarily be detachable from the dehumidifying element 1.
  • the guide member 47 does not necessarily have to be arranged in the radial direction centered on the axis L.
  • the guide member 47 may be arranged in a lattice shape. Good.

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CN108993103B (zh) * 2018-09-30 2023-11-10 天津华电北宸分布式能源有限公司 一种除湿过滤装置
CN115282746B (zh) * 2022-08-04 2024-07-09 中元汇吉生物技术股份有限公司 除湿组件、滚筒除湿组件和分析仪
KR20250122744A (ko) * 2024-02-07 2025-08-14 엘지전자 주식회사 제습모듈과, 제습모듈의 제조방법 및 제습모듈을 포함하는 제습기
KR20250122747A (ko) * 2024-02-07 2025-08-14 엘지전자 주식회사 제습모듈 및 이를 포함하는 제습기
KR20250122743A (ko) * 2024-02-07 2025-08-14 엘지전자 주식회사 제습기

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TWI765930B (zh) 2022-06-01
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KR20190077402A (ko) 2019-07-03
EP3539643A1 (en) 2019-09-18
TW201829048A (zh) 2018-08-16
US20200179871A1 (en) 2020-06-11
JP2018075513A (ja) 2018-05-17
CN109922874B (zh) 2021-12-24
KR102432606B1 (ko) 2022-08-16
CN109922874A (zh) 2019-06-21
JP6780817B2 (ja) 2020-11-04

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