US20080006039A1 - Dehumidifier and centrifugal blower thereof - Google Patents

Dehumidifier and centrifugal blower thereof Download PDF

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Publication number
US20080006039A1
US20080006039A1 US11/599,286 US59928606A US2008006039A1 US 20080006039 A1 US20080006039 A1 US 20080006039A1 US 59928606 A US59928606 A US 59928606A US 2008006039 A1 US2008006039 A1 US 2008006039A1
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US
United States
Prior art keywords
air
fan
outlet ports
incline
dehumidifier
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.)
Abandoned
Application number
US11/599,286
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English (en)
Inventor
Jin Baek Kim
Jin Yong Mo
Young Jae Kim
Jai Kwon Lee
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.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Assigned to SAMSUNG ELECTRONICS CO., LTD. reassignment SAMSUNG ELECTRONICS CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LEE, JAI KWON, MO, JIN YONG, KIM, JIN BAEK, KIM, YOUNG JAE
Publication of US20080006039A1 publication Critical patent/US20080006039A1/en
Abandoned legal-status Critical Current

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Classifications

    • 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
    • F24F3/153—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 with subsequent heating, i.e. with the air, given the required humidity in the central station, passing a heating element to achieve the required temperature
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/06—Helico-centrifugal pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
    • F04D29/5826—Cooling at least part of the working fluid in a heat exchanger
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/663—Sound attenuation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • 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

Definitions

  • the present general inventive concept relates to a dehumidifier having a centrifugal blower, and, more particularly, to a dehumidifier wherein the structure of a centrifugal blower is modified to improve the blowing efficiency of the centrifugal blower.
  • a dehumidifier is an apparatus that removes moisture from air using movement of heat generated during condensation.
  • the dehumidifier includes a blowing fan to circulate room air.
  • a turbo fan is used as the blowing fan to blow a desired amount of air, noise is reduced as compared to when an axial fan is used as the blowing fan.
  • the dehumidifier includes a cabinet 1 having an outlet port 1 b formed in the front part thereof and an inlet port 1 a formed in the rear part thereof, a turbo fan 3 mounted in the cabinet 1 to forcibly move room air, and an evaporator 4 disposed between the inlet port la and the turbo fan 3 to remove moisture from the air through heat exchange.
  • FIG. 1 The flow direction of air in the dehumidifier is illustrated in FIG. 1 .
  • a turbo fan 3 When a turbo fan 3 is rotated by a fan motor 2 , room air is introduced through the inlet port 1 a. Moisture contained in the room air is removed as the air passes through the evaporator 4 and a condenser 5 . Subsequently, the air passes through the turbo fan 3 , and is discharged in the radial direction of the turbo fan 3 .
  • the air discharged from the turbo fan 3 in the radial direction is not naturally guided to the outlet port 1 b, but instead the air collides with the side surfaces of the cabinet 1 .
  • flow resistance is greatly generated in the dehumidifier, and therefore, the blowing efficiency is decreased, and flow noise is generated.
  • the above-mentioned problems become more serious.
  • the present general inventive concept provides a dehumidifier wherein the structure of a centrifugal blower is modified to improve the blowing efficiency of the centrifugal blower and to reduce noise.
  • a dehumidifier including a body having inlet and outlet ports and a centrifugal fan mounted in the body to circulate air.
  • the centrifugal fan includes a fan disk coupled to a fan motor such that the fan disk can be rotated, and the fan disk includes an incline that can be inclined toward the outlet ports to guide the flow of air passing through the centrifugal fan to the outlet ports.
  • the fan disk can further include a motor coupling part, which is coupled to the fan motor, and the incline can extend from the motor coupling part in the radial direction.
  • the incline can include a first incline part connected to the motor coupling part and a second incline part bent from the first incline part toward the outlet ports and extending a predetermined length.
  • the centrifugal fan can further include blades mounted at the outer circumference of the incline.
  • each outlet port can be disposed at opposite sides of a rear part of the body, and each outlet port includes an inclined outlet part extending toward each side of the rear part of the body while being inclined toward the interior of the body and a side outlet part formed in each side surface of the body while being connected to the inclined outlet part.
  • the body can include a protrusion protruding outward to maintain a predetermined distance between the outlet ports and a wall when the body is positioned adjacent to the wall.
  • the inlet ports can be formed in opposite sides of a front part of the body.
  • the dehumidifier can further include a heat exchanger mounted within the interior space of the body to remove moisture from the room air.
  • the heat exchanger can also include an evaporator to absorb heat and to condense moisture from the room air and a condenser to supply heat to the air passing through the evaporator.
  • the inlet ports can further include a filter mounted within each inlet port to remove foreign matter contained in the room air.
  • a dehumidifier including a body, outlet ports formed in opposite sides of a rear part of the body, and a centrifugal fan mounted in the body to circulate air
  • the centrifugal fan includes a motor coupling part, which is coupled to a fan motor, an incline extending from the motor coupling part in the radial direction and inclined toward the outlet ports to naturally guide the flow of air to the outlet ports, and blades mounted at the incline.
  • a centrifugal blower mounted in a dehumidifier to circulate air including a fan motor and a fan disk coupled to the fan motor such that the fan disk can be rotated, wherein the fan disk includes an incline that is inclined toward outlet ports of the dehumidifier to guide the flow of discharged air to the outlet ports.
  • a dehumidifier including a body having a front portion including at least two inlet ports to intake air at different angles with respect to each other and a rear portion including at least two outlet ports to discharge the air therein outside the body at different angles with respect to each other, and a heat exchanging unit to dehumidify the air in the body before the air is discharged through the at least two outlet ports.
  • the blower device can further include a disk-shaped portion that extends in a curved shape from a central portion toward the rear portion of the body, a motor coupling part disposed at the center of the blower device to couple with a motor, and blades extending along the outer periphery of the disk shaped portion and disposed to draw the dehumidified air into the blower device in an axial direction with respect to the disk-shaped portion and to blow the dehumidified air radially outward along a surface of the disk-shaped portion toward the at least two outlet ports.
  • a method of dehumidifying air using a dehumidifier having a hollow body having inlet ports and outlet ports includes introducing room air through the inlet ports, passing the room air through a heat exchanger to remove moisture from the air, and drawing the air through a centrifugal blower in a first direction and blowing the drawn air toward a plurality of directions other than the first directions and out of a plurality of outlet ports disposed at different angles in a rear portion of the body.
  • the method can further include passing the room air through the heat exchanger and passing the air first through a condenser to supply heat to the room air and then through an evaporator to absorb heat and condense moisture from the room air. Passing the room air through the inlet ports may also include passing the air through a filter to remove foreign matter contained in the room air.
  • FIG. 1 is a sectional view illustrating the flow direction of air in a conventional dehumidifier with a turbo fan;
  • FIG. 2 is a perspective view illustrating an external appearance of a dehumidifier according to an embodiment of the present general inventive concept
  • FIG. 3 is a side view, illustrating the structure of the dehumidifier according to an embodiment of the present general inventive concept
  • FIG. 5 is a view illustrating the operation of the dehumidifier according to an embodiment of the present general inventive concept.
  • FIG. 2 is a perspective view illustrating the external appearance of a dehumidifier according to an embodiment of the present general inventive concept
  • FIG. 3 is a side view illustrating the structure of the dehumidifier according to an embodiment of the present general inventive concept
  • FIG. 4 is a perspective view illustrating a centrifugal fan of the dehumidifier according to an embodiment of the present general inventive concept.
  • the dehumidifier includes a body 10 having inlet ports 11 , through which room air is introduced, and outlet ports 12 , through which the air is discharged, a heat exchanger 20 mounted in the body 10 to perform heat exchange with the room air introduced through the inlet ports 11 such that moisture is removed from the room air, a centrifugal blower 100 disposed at the rear of the heat exchanger 20 to circulate the air, and a water bucket 30 disposed below the heat exchanger 20 to collect water condensed during dehumidification.
  • the inlet ports 11 are formed in opposite sides of a front part of the body 10 . Inside each inlet port 11 is mounted a filter 13 to filter foreign matter contained in the room air.
  • the outlet ports 12 are formed in opposite sides of a rear part 10 a of the body 10 .
  • Each outlet port 12 includes an inclined outlet part 12 a, which extends toward each side part 10 b of the body 10 while being inclined toward the interior of the body 10 , and a side outlet part 12 b, which is formed in one side of each side surface 10 b of the body 10 while being connected to the inclined outlet part 12 a.
  • the outlet ports 12 are formed in the opposite sides of the rear part 10 a of the body 10 in an inclined fashion, and the outlet ports 12 are also formed in one side of each side surface 10 b of the body 10 , in consideration of blowing characteristics. Specifically, air is discharged from the centrifugal blower 100 in the radial direction of the centrifugal blower 100 , i.e., toward the side parts 10 b of the body 10 .
  • the outlet ports 12 are formed in the opposite sides of the rear part 10 a such that the inclined outlet parts 12 a are inclined toward the interior of the body 10 , and the outlet ports 12 a are also formed in one side of each side surface 10 b, as illustrated in FIG. 2 , air discharged from the centrifugal blower 100 is smoothly supplied into the interior of a room without a substantial flow resistance.
  • the body 10 has a first protrusion 14 formed between the two outlet ports 12 such that the first protrusion 14 protrudes to the rear of the body 10 .
  • the first protrusion 14 maintains a predetermined distance between the outlet ports 12 and the wall to prevent the outlet ports 12 from being blocked by the wall.
  • a second protrusion 15 is formed between the two inlet ports 11 such that the second protrusion 15 protrudes to the front of the body 10 .
  • the interior of the body 10 is partitioned into front and rear interior parts by an intermediate partition 16 .
  • the heat exchanger 20 and the water bucket 30 are disposed in the front interior part of the intermediate partition 16 .
  • a compressor 17 to compress refrigerant to a high temperature and a high pressure.
  • a blowing port 16 a In the upper part of the intermediate partition 16 is formed a blowing port 16 a, through which air is blown.
  • the centrifugal blower 100 is mounted in the blowing port 16 a.
  • a drain pan 18 having a drain port 18 a formed in one side thereof is mounted between the heat exchanger 20 and the water bucket 30 .
  • the drain pan 18 collects condensed water, which falls from the heat exchanger 20 , and discharges the collected water into the water bucket 30 located below the drain pan 18 .
  • the heat exchanger 20 includes an evaporator 21 and a condenser 22 .
  • the evaporator 21 is disposed at the rear of the inlet ports 11 to absorb heat from the room air introduced through the inlet ports 11 and, at the same time, to condense moisture.
  • the condenser 22 is disposed at the rear of the evaporator 21 to supply heat to the air passing through the evaporator 21 .
  • the centrifugal blower 100 includes a fan motor 200 fixed to the intermediate partition 16 by way of a motor mount 19 .
  • the centrifugal blower 100 also includes a centrifugal fan 300 (see FIG. 4 ) that is rotated by the fan motor 200 to induce the flow of air.
  • the centrifugal fan 300 includes a fan disk 310 coupled to the fan motor 200 such that the fan disk 310 can be rotated, a plurality of blades 320 mounted at the outer circumference of the front surface of the fan disk 310 , and a shroud 330 mounted to the front ends of the blades 320 .
  • the shroud 330 has an opening 331 formed in the center thereof, through which air is introduced.
  • the fan disk 310 has an incline 311 which is inclined toward the outlet ports 12 .
  • the incline 311 naturally guides the flow of air passing through the centrifugal fan 300 toward the outlet ports 12 such that the air discharged from the centrifugal fan 300 can be smoothly discharged from the body 10 without a substantial resistance.
  • the fan disk 310 has a motor coupling part 312 , which is coupled to the fan motor 200 .
  • the incline 311 of the fan disk 310 extends from the motor coupling part 312 in the radial direction.
  • the blades 320 are arranged along the outer circumference of the incline 311 .
  • the fan motor 200 is coupled to the motor coupling part 312 of the fan disk 310 through the opening 331 of the shroud 330 .
  • the incline 311 includes a first incline part 311 a inclined gently from the motor coupling part 312 to the rear of the centrifugal fan 300 and a second incline part 311 b bent from the first incline part 311 a toward the outlet ports 12 and extending a predetermined length.
  • FIG. 5 is a view illustrating the operation of the dehumidifier according to the present general inventive concept.
  • the centrifugal fan 300 When the operation of the dehumidifier is initiated, the centrifugal fan 300 is rotated by the fan motor 200 , and therefore, room air is introduced through the inlet port 11 .
  • the room air is cooled through heat exchange with the evaporator 21 as the air passes through the evaporator 21 .
  • moisture contained in the air is condensed, and is then collected in the drain pan 18 disposed below the evaporator 21 .
  • the air passes through the condenser 22 .
  • the air is supplied with heat, and is then introduced into the centrifugal fan 300 through the opening 331 of the shroud 330 .
  • the air introduced into the centrifugal fan 300 is guided along the fan disk incline 311 of the fan disk 310 , and then flows to the outlet ports 12 formed in the body 10 .
  • the air discharged from the centrifugal fan 300 is naturally discharged through the outlet ports 12 without substantial resistance. Consequently, the blowing efficiency is improved, and noise is reduced.
  • the condensed water which is collected in the drain pan 18 , is discharged through the drain port 1 8 a, and is received in the water bucket 30 .
  • the structure and the location of the outlet ports are modified in consideration of the blowing characteristics of the centrifugal blower. Consequently, air discharged from the centrifugal blower is smoothly discharged into a room without substantial flow resistance.
  • the protrusions are formed on the body of the dehumidifier such that the protrusions protrude to the front and rear of the body. Consequently, it is possible to prevent the outlet ports from being blocked by a wall of the room, even when the dehumidifier is positioned adjacent to the wall, and therefore, the blowing operation is smoothly performed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Drying Of Gases (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US11/599,286 2006-07-10 2006-11-15 Dehumidifier and centrifugal blower thereof Abandoned US20080006039A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020060064546A KR20080005777A (ko) 2006-07-10 2006-07-10 제습기와 제습기용 원심송풍기
KR2006-64546 2006-07-10

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US20080006039A1 true US20080006039A1 (en) 2008-01-10

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US11/599,286 Abandoned US20080006039A1 (en) 2006-07-10 2006-11-15 Dehumidifier and centrifugal blower thereof

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US (1) US20080006039A1 (zh)
JP (1) JP2008019850A (zh)
KR (1) KR20080005777A (zh)
CN (1) CN101105311A (zh)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140010657A1 (en) * 2012-07-05 2014-01-09 Visteon Global Technologies, Inc. Blower wheel with improved wheel hub to blade interface
US20140261764A1 (en) * 2013-03-15 2014-09-18 Water-Gen Ltd. Dehumidification apparatus
CN105201924A (zh) * 2015-08-18 2015-12-30 蚌埠市拓坚机电有限公司 一种自清洁负压风机
US20160040895A1 (en) * 2014-08-11 2016-02-11 Lee Wa Wong Water-Cooled Split Air Conditioning System
WO2019102466A1 (en) * 2017-11-23 2019-05-31 Water-Gen Ltd. Heat exchanger and apparatus for extraction of water from air and method of manufacture thereof
US20200224891A1 (en) * 2017-10-20 2020-07-16 Mitsubishi Electric Corporation Air conditioner
USD963154S1 (en) * 2020-07-31 2022-09-06 Mitsubishi Electric Corporation Sirocco fan

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CN101968065B (zh) * 2010-10-15 2012-05-23 南京埃科净化技术有限公司 一种高效率风机过滤器机组
KR101926374B1 (ko) * 2011-11-17 2019-03-07 코웨이 주식회사 제습공기청정기 및 이를 이용한 제습방법
KR101926375B1 (ko) * 2011-11-17 2018-12-07 코웨이 주식회사 살균기능이 구비된 제습형 공기 청정기
KR101988945B1 (ko) * 2011-11-17 2019-06-12 웅진코웨이 주식회사 제습형 공기 청정기
KR101651487B1 (ko) * 2014-11-05 2016-08-26 엘지전자 주식회사 공기청정기
JP6542693B2 (ja) * 2016-02-24 2019-07-10 パナソニック株式会社 溶媒分離方法、溶媒分離装置及び溶媒分離システム
KR102060145B1 (ko) * 2018-02-22 2019-12-27 엘지전자 주식회사 공기유동 가이드 어셈블리 및 이를 포함하는 현열교환기

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Cited By (16)

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Publication number Priority date Publication date Assignee Title
US20140010657A1 (en) * 2012-07-05 2014-01-09 Visteon Global Technologies, Inc. Blower wheel with improved wheel hub to blade interface
US10006721B2 (en) 2013-03-15 2018-06-26 Water-Gen Ltd. Closed-cycle condenser dryer with heat regeneration
US20140261764A1 (en) * 2013-03-15 2014-09-18 Water-Gen Ltd. Dehumidification apparatus
US9140396B2 (en) * 2013-03-15 2015-09-22 Water-Gen Ltd. Dehumidification apparatus
US11592194B2 (en) 2013-03-15 2023-02-28 Watergen Ltd. Planar element for forming heat exchanger
KR101624526B1 (ko) 2013-03-15 2016-05-26 워터-젠 리미티드 제습 장치
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JP2008019850A (ja) 2008-01-31
KR20080005777A (ko) 2008-01-15

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