EP2883487B1 - Drying machine - Google Patents

Drying machine Download PDF

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Publication number
EP2883487B1
EP2883487B1 EP14194927.1A EP14194927A EP2883487B1 EP 2883487 B1 EP2883487 B1 EP 2883487B1 EP 14194927 A EP14194927 A EP 14194927A EP 2883487 B1 EP2883487 B1 EP 2883487B1
Authority
EP
European Patent Office
Prior art keywords
air
condenser
inflow passage
cooling water
air inflow
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.)
Not-in-force
Application number
EP14194927.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2883487A1 (en
Inventor
Jun Liu
Wenfeng Pang
Yonggang Xu
Qi Zhang
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
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 BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP2883487A1 publication Critical patent/EP2883487A1/en
Application granted granted Critical
Publication of EP2883487B1 publication Critical patent/EP2883487B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/24—Condensing arrangements

Definitions

  • the present invention relates to a drying machine, comprising a tub for containing laundry, a condenser spatially communicated with the tub, and a fan that enables air to flow from the tub to the condenser, wherein the condenser has a body, an air inflow passage connected adjacent to a bottom portion of the body, and an air outlet adjacent to a top portion of the body, wherein the air inflow passage approximately extends along a tangential direction of a cross section of the body, so that air that enters the body from the air inflow passage rises along a side wall of the body in a centrifugal rotation manner.
  • a condenser of the drying machine includes a condensing duct, a condensate supply pipe, and a cyclone forming unit.
  • a drying process is usually as follows. With a heater placed in a heating tunnel, dry air is heated into dry hot air, which subsequently enters a laundry treatment drum to exchange heat and humidity with wet clothes, and takes moisture away from the clothes, thereby forming humid warm air.
  • the humid warm air passes through an outlet disposed at the laundry treatment drum to enter a condenser.
  • condensation in the condenser moisture in the humid warm air is condensed into liquid water and discharged from the air through a drainage tunnel. After the condensation, the air becomes dry cold air which is driven into the heating tunnel again by a fan, and the dry cold air becomes dry hot air after heating, and enters another circle. The circle repeats until the drying program ends.
  • the condenser may use various condensation methods.
  • a common method is to use water as a cooling medium to exchange heat with the humid warm air, thereby condensing moisture from the humid warm air.
  • Such condenser generally has a body in a passage shape, and a cooling water pipe which is connected to the body. Humid warm air passes the condenser upwards against a direction of gravity. At the same time, cooling water flows out from the top of the condensation device down to exchange heat with the humid warm air.
  • the limit of space that is, due to the limited spatial height of the body of the condenser, the heat exchange distance between the humid hot air and the cooling water is quite short.
  • the humid warm air ascending at a high speed may blow away the water flow after meeting the cooling water, or even blow water droplets into the fan and the subsequent air heating device.
  • An objective of the invention is to provide a drying machine with an improved condenser, which has better heat exchange performance and from that cooling water is not easily blown into a fan or an air heating device.
  • a drying machine including a tub for containing laundry, a condenser spatially communicated with the tub, and a fan that enables air to flow from the tub to the condenser, where the condenser has a body, an air inflow passage connected adjacent to a bottom portion of the body as determined with reference to a direction of gravity, and an air outlet adjacent to a top portion of the body, and the air inflow passage approximately extends along a tangential direction of a cross section of the body, so that air that enters the body from the air inflow passage rises along a side wall of the body in a centrifugal rotation manner.
  • a cooling water inlet pipe is connected to the condenser body in a centrifugal manner.
  • a centre position of the cooling water pipe at which the cooling water inlet pipe is connected to the condenser body is higher in a gravity direction than a centre position of the air inflow passage at which the air inflow passage is connected to the condenser body, and the cooling water inlet pipe and the condenser body are connected at a lower half portion of the condenser body.
  • the drying machine may be a machine having a clothes drying function, for example, a machine used only to dry clothes, or a washer-dryer.
  • the cooling water inlet pipe that is connected in a centrifugal manner enables the cooling water that flows in to flow downwards along an inner wall of the body spirally, and a water film is formed on the inner wall of the body, which is advantageous to heat exchange with the air, and makes it difficult for the air to blow the cooling water to generate water spray.
  • the cooling water is far away from the fan and the air heating device located at a downstream position in an air circulation direction of the condenser, and scattering water droplets are not easily blown into the fan and the air heating device.
  • better heat exchange performance is achieved when the cooling water is closer to a portion at which the airflow is concentrated.
  • the air inflow passage approximately extends along the tangential direction of the cross section of the body, so that the air that enters the body from the air inflow passage rises along the side wall of the body in a centrifugal rotation manner, and the air travels a longer distance in the condenser body to achieve more heat exchange; in addition, resistance loss caused because airflow directly impacts a wall surface is effectively reduced; and moreover, cooling water flows on the wall surface of the condenser, which prevents water droplets from being carried into the air and entering the fan and the air heating device.
  • a central axis of the air inflow passage approximately coincides with a tangent of a cross section of the condenser body at a portion which is connected to the air inflow passage.
  • At least a portion of the body which is adjacent to the air inflow passage is cylindrical-shaped.
  • the cylindrical shape is advantageous to the spiral ascending of the airflow because the air can flow closer to the wall surface with minimum resistance.
  • other suitable shapes such as an oval section structure, also satisfy the purposes of the present invention.
  • the air inflow passage is approximately horizontally arranged, which is more advantageous to rotation and circulation of airflow.
  • the cooling water inlet pipe approximately extends along the tangential direction of the cross section of the body. In this way, rotation of the water flow is more obvious and attachment between the water flow and the inner wall of the body is better.
  • the cooling water inlet pipe approximately extends horizontally, which is more advantageous to the rotation of the water flow along the inner wall of the body.
  • the cooling water inlet pipe is connected in such a way that the cooling water rotates in a centrifugal manner along the side wall of the body, and a rotation direction is the same as a centrifugal rotation direction of the air that enters the body from the air inflow passage. Therefore, the air encounters lower resistance when flowing, the cooling water is not easily blown to generate water spray, and better heat exchange performance is achieved when the air contact with the cooling water for a longer time.
  • a washer-dryer 1 has a laundry treatment drum assembly 3 located in a box body 2, where the laundry treatment drum assembly 3 includes a drum 5 which can rotate when being driven by a motor 4, and an outer tub 6 which is sleeved outside the drum 5.
  • the tub 6 is connected to and is spatially communicated with a condenser 9; the condenser 9 is further connected to a fan 11 and an air heating passage 10 in sequence; the other end of the air heating passage 10 is then spatially communicated with the tub 6, so that an air circulation path 7 is formed in the tub 6, the condenser 9, the fan 11, and the air heating passage 10.
  • a heater 12 in the air heating passage 10 heats drying air 8 that flows through the passage; the heated high-temperature drying air 8 enters the laundry treatment drum assembly 3 under the effect of the fan 11, heats wet clothes in the drum 5 to make moisture in the clothes evaporate; and the drying air 8 further carries the evaporated moisture and enters the condenser 9, and the moisture in the drying air 8 is condensed and becomes liquid again, and is separated from the drying air 8, and the drying air 8 then is at a low temperature and becomes dry, and is driven by the fan 11 to enter the heating passage 10 again, and a new cycle is started. The cycle repeats until the clothes in the inner drum 5 is finally dried.
  • the condenser 9 has a body 21, an air inflow passage 22 is connected adjacent to a bottom portion of the body 21, and an air outlet 23 is disposed adjacent to a top portion of the body.
  • the other end of the air inflow passage 22 is connected to the tub 6, and the air outlet 23 is communicated with the fan 11. Therefore, with the fan 11, the drying air 8 from the outer drum 6 is sucked into the body 21 of the condenser 9 through the air inflow passage 22 and leaves the condenser body 21 from the air outlet 23.
  • the air inflow passage 22 is horizontally arranged, and a central axis 220 of the air inflow passage 22 approximately coincides with a tangent of a cross section of the condenser body 21 at a portion 24, which is connected to the air inflow passage 22.
  • the portion 24 of the condenser body 21 which is connected to the air inflow passage 22 is cylindrical-shaped. Therefore, the drying air 8 that enters the condenser body 21 from the air inflow passage 22 rises along a side wall 210 of the condenser body 21 in a centrifugal rotation manner.
  • a cooling water inlet pipe 25 is connected to the condenser body 21 horizontally and approximately along a tangential direction of the cross section of the condenser body 21, so that cooling water 26 rotates in a centrifugal manner along the side wall 210 of the body after entering the condenser body 21.
  • a rotation direction of the cooling water 26 is the same as a centrifugal rotation direction of the drying air 8 that enters the body 21 from the air inflow passage 22.
  • a centre position of the cooling water pipe 25 at which the cooling water inlet pipe 25 is connected to the condenser body 21 is higher in a gravity direction than a centre position of the air inflow passage 22 at which the air inflow passage 22 is connected to the condenser body 21, and the cooling water inlet pipe 25 and the air inflow passage 21 are connected at a lower half portion 27 of the condenser body 21, close to the air inflow passage 22 and in particular, to an area in which the drying air 8 is relatively concentrated.
  • the cooling water inlet pipe 25 is connected to the portion 24 of the body 21 which is connected to the air inflow passage 22.
EP14194927.1A 2013-12-13 2014-11-26 Drying machine Not-in-force EP2883487B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310683210.0A CN104711833B (zh) 2013-12-13 2013-12-13 干衣机

Publications (2)

Publication Number Publication Date
EP2883487A1 EP2883487A1 (en) 2015-06-17
EP2883487B1 true EP2883487B1 (en) 2017-01-11

Family

ID=51951724

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14194927.1A Not-in-force EP2883487B1 (en) 2013-12-13 2014-11-26 Drying machine

Country Status (2)

Country Link
EP (1) EP2883487B1 (zh)
CN (1) CN104711833B (zh)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106192325B (zh) * 2015-04-29 2020-06-12 博西华电器（江苏）有限公司 电动干衣机
CN106192333B (zh) * 2015-04-29 2019-11-19 博西华电器（江苏）有限公司 干衣机
WO2017194531A1 (en) 2016-05-10 2017-11-16 Arcelik Anonim Sirketi A laundry washing-drying machine comprising a water-cooled condenser
CN111254671B (zh) * 2018-11-30 2023-10-27 博西华电器（江苏）有限公司 热交换装置及具有热交换装置的衣物烘干器具
CN111254672B (zh) * 2018-11-30 2023-09-15 博西华电器（江苏）有限公司 热交换装置及具有热交换装置的衣物烘干器具
CN111254668A (zh) * 2018-11-30 2020-06-09 博西华电器（江苏）有限公司 衣物烘干器具
CN109706685B (zh) * 2018-12-24 2020-09-15 珠海格力电器股份有限公司 烘干风道和洗衣干衣机
CN110815671B (zh) * 2019-11-19 2021-11-02 广东中讯通讯设备实业有限公司 一种mpp管材冷却定型套及其工作方法
CN111561341A (zh) * 2020-05-30 2020-08-21 中国铁建投资集团有限公司 一种隧道降温车
CN113756071B (zh) 2020-06-02 2023-06-30 青岛海尔洗涤电器有限公司 用于烘干设备的冷凝器及烘干设备
CN115110282A (zh) * 2021-03-18 2022-09-27 青岛海尔滚筒洗衣机有限公司 用于烘干设备的冷凝器及烘干设备

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US3990870A (en) * 1972-10-05 1976-11-09 Gerhard Miczek Means and method for separating and collecting particulate matter from a gas flow
JPS59212685A (ja) * 1983-05-17 1984-12-01 Masahiko Izumi 気体冷却除水滴装置
JP3710725B2 (ja) * 2001-05-23 2005-10-26 株式会社日立製作所 洗濯乾燥機および水冷式熱交換器
KR101236972B1 (ko) * 2004-07-02 2013-02-22 삼성전자주식회사 사이클론 응축장치 및 이 사이클론 응축장치를 구비한 세탁기 및 건조기
CN100532692C (zh) * 2004-10-27 2009-08-26 乐金电子(天津)电器有限公司 烘干装置
KR20070075485A (ko) * 2006-01-13 2007-07-24 엘지전자 주식회사 세탁물 처리 기기의 수냉식 응축기
KR20070075486A (ko) * 2006-01-13 2007-07-24 엘지전자 주식회사 세탁물 처리 기기의 수냉식 응축기
JP4108100B2 (ja) * 2006-04-07 2008-06-25 三洋電機株式会社 乾燥機
KR101821195B1 (ko) * 2009-08-11 2018-01-23 엘지전자 주식회사 건조기 및 그 제어방법

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Also Published As

Publication number Publication date
CN104711833B (zh) 2018-04-06
CN104711833A (zh) 2015-06-17
EP2883487A1 (en) 2015-06-17

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