EP3660194B1 - Wärmeaustauschvorrichtung und wäschetrocknungsgerät mit wärmeaustauschvorrichtung - Google Patents

Wärmeaustauschvorrichtung und wäschetrocknungsgerät mit wärmeaustauschvorrichtung

Info

Publication number
EP3660194B1
EP3660194B1 EP19208789.8A EP19208789A EP3660194B1 EP 3660194 B1 EP3660194 B1 EP 3660194B1 EP 19208789 A EP19208789 A EP 19208789A EP 3660194 B1 EP3660194 B1 EP 3660194B1
Authority
EP
European Patent Office
Prior art keywords
tub
pipe
rear wall
drum
heat exchange
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.)
Active
Application number
EP19208789.8A
Other languages
English (en)
French (fr)
Other versions
EP3660194A1 (de
Inventor
Yun(PLC2) Liu
Lijun Chen
Fei Lu
Yuting ZHU
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 EP3660194A1 publication Critical patent/EP3660194A1/de
Application granted granted Critical
Publication of EP3660194B1 publication Critical patent/EP3660194B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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 
    • 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
    • D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air 
    • 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
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
    • 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
    • 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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/26—Casings; Tubs
    • D06F37/267—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups
    • 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
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
    • D06F58/04—Details 

Definitions

  • the present invention belongs to the technical field of household appliances, and relates to a laundry drying appliance and a heat exchange apparatus thereof.
  • Heated high-temperature drying air enters the laundry processing barrel assembly under action of the fan, to heat wet laundry in the drum, thereby evaporating moisture in the laundry.
  • the drying air carrying the evaporated moisture then enters the condensing passage, in which the moisture in the drying air is condensed to become liquid again and be separated from the drying air.
  • the drying air then becomes cooled and dried again, and enters the heating passage again under driving of the fan, to start a new cycle of circulation, and so on, so that the laundry in the drum are eventually dried.
  • a cooling water inlet pipe is connected to the condensing passage. In the drying procedure, cooling water flows into the condensing passage from the inlet pipe, so that heat is exchanged with the drying air entering the condensing passage, thereby condensing the moisture in the drying air.
  • U.S. Patent No. US6279357B1 discloses a washer-dryer.
  • the washer-dryer has a roller that is mounted in a tub using a tripod.
  • a rear wall of the tub has a groove.
  • the roller rotates, and wet air leaves the roller and is stirred under rotation of the roller. Flowing water contacts the wet air, so that an effect of condensing the air is improved before the air is heated and returns to the roller along a circulation passage.
  • EP 3 330 432 A1 describes a laundry drying machine that includes a drying compartment and a condensation compartment.
  • a first heat exchange apparatus is disposed in the condensation compartment.
  • a second heat exchange apparatus is disposed on a separation wall that separates the drying compartment from the condensation compartment. The second heat exchange apparatus may exchange heat with air in both the drying compartment and the condensation compartment to accelerate condensation of water in the air.
  • US 3 922 798 A describes a clothes dryer having a refrigeration system wherein the compressor, condenser and evaporator are rotatable with the dryer drum.
  • WO 2015 070901 A1 describes a laundry dryer with heat exchanger modules with a plurality of heat exchange layers.
  • the invention is a laundry drying appliance as defined in claim 1.
  • the laundry drying appliance comprises a heat exchange apparatus.
  • the heat exchange apparatus of the laundry drying appliance includes a tiled pipe in which a fluid passage is formed, the pipe having an inlet and an outlet, thereby forming a fluid passage for flowing of a cooling medium in the pipe, where the pipe is made of metal or a material whose thermal conductivity is not inferior to metal.
  • the pipe may be folded and bent, and an acute angle may be formed between each two adjacent bent sections. A periphery of the pipe can contact process air, so a heat exchange area is large, and heat exchange efficiency is relatively high.
  • the pipe includes several sections formed through bending or folding, each section being fixed using a connecting bracket.
  • the pipe is folded and bent, and mutually bent sections are parallel to each other.
  • the pipe is folded and bent, and has several mutually bent sections, and after the heat exchange apparatus being vertically or obliquely mounted relative to a horizontal plane, at least partial sections of the pipe are inclined downward relative to the horizontal plane along a direction in which the cooling medium flows.
  • the e-laundry drying appliance includes a drum horizontally or obliquely disposed, the drum being rotatably located in a tub, and a wall of the drum having several densely-distributed holes to allow circulation of process air used in drying flows between the drum and the tub, a rear wall of the drum being connected to a drive shaft that drives the drum to rotate, and the drive shaft passing through a bearing located on a rear wall of the tub, the tub being connected to a process air passage, and the process air passage being provided with a fan therein, where an air inlet of the process air passage is located on the rear wall of the tub or near the rear wall of the tub, the heat exchange apparatus according to any of the foregoing embodiments being mounted between the rear wall of the tub and the rear wall of the drum, wherein the tub comprises a guiding apparatus, which is arranged close to an outlet of the pipe inside the tub and which is extending towards a bottom of the tub.
  • the heat exchange apparatus is fixed to the rear wall of the tub.
  • a laundry drying appliance 1 includes a tub 2 and a drum 4 that is located in the tub 2 and that may be driven by a motor 3 to rotate, the tub and the drum constituting a main drying chamber.
  • a wall 41 of the drum 4 has dense holes 42, so that air circulation is suitable between an interior of the drum 4 and the tub 2.
  • a rear wall 43 of the drum is connected to a drive shaft 44 that drives the drum to rotate.
  • the drive shaft 44 is connected to the motor 3 in a driving manner after passing through a bearing 23 located on the rear wall 22 of the tub.
  • the drum 4 is horizontally disposed. In other implementations, the drum may also be obliquely disposed in an oblique tub.
  • a central axis of the drum 4 being horizontal or oblique is used as a reference for terms "horizontally" and "obliquely".
  • the tub 2 is connected to a process air passage 5.
  • An air inlet 51 of the process air passage 5 is connected to a side wall 21 of the tub 2, and is close to the rear wall 22 of the tub 2.
  • An air outlet 52 of the process air passage 5 is connected to a washer 6 mounted on a front side of the tub 2. Space of the process air passage 5 and space of the tub 2 are in communication.
  • the inlet of the process air passage 5 may also be connected to the rear wall 22 of the tub 2.
  • a fan 7 and a heating apparatus 8 are provided inside the process air passage 5. After the fan 7 is started, air can be driven to enter the process air passage 5 from the air inlet 51 of the process air passage 5, and passes through the heating apparatus 8, and is blown out through the air outlet 52 to enter a front portion of the tub 2, so as to enter the drum 4 to fully contact laundry and then passes through the hole 42 on the wall 41 of the drum. Relatively much airflow passes through the hole 42 and then enter a gap 9 that is between the rear wall 22 of the tub and the rear wall 43 of the drum and whose pressure is relatively low, and then aim at the air inlet 51 of the process air passage 5 along the gap 9, and finally enter the process air passages 5, thereby completing a cyclic flow.
  • the heat exchange apparatus 10 is mounted in the gap between the rear wall 22 of the tub and the rear wall 43 of the drum, through which relatively dense process air passes, so that the heat exchange apparatus 10 exerts higher heat exchange efficiency.
  • a dedicated heat exchange passage is not required, more space is saved, thereby reducing a volume and manufacturing costs of the laundry drying appliance 1.
  • the heat exchange apparatus 10 has a flat structure and is fixed to the tub 2, for example, may be fixed to the rear wall 22 of the tub.
  • the heat exchange apparatus 10 includes a fluid passage 11 defined by a material having relatively good thermal conductivity, and the fluid passage 11 having a passage inlet 12 that passes through a wall 20, for example, the rear wall 22 of the tub 2.
  • a passage outlet 13 is located inside the tub 2.
  • a cooling medium is supplied to the fluid passage 11 through the passage inlet 12. Heat is exchanged between the cooling medium and the process air contacting the heat exchange apparatus 10 using a thermally conductive passage wall, to reduce the temperature of the process air.
  • the cooling medium with an increased temperature is discharged from a bottom of the tub 2.
  • the cooling medium may be water.
  • the fluid passage 11 can continuously provide a cooling medium to the heat exchange apparatus 10.
  • the cooling medium flows in the fluid passage 11, and heat can be sufficiently exchanged with the process air through the passage wall, so that the cooling medium is fully utilized.
  • the cooling medium flows in the fluid passage 11, no splash enters the drum 4 under blowing of the airflow, and therefore laundry in the drum 4 is prevented from being wet, and the cooling medium is not inhaled into the process air passage 5 by the fan 7.
  • the heat exchange apparatus 10 with the flat structure in which the fluid passage 11 is arranged may be designed to have a relatively thin thickness as required, so that a requirement on a width of the gap 9 between the rear wall 22 and the rear wall 43 of the drum is relatively low, thereby more helping air pass through the gap.
  • a heat exchange apparatus 100 includes a tiled pipe 160 in which a fluid passage 110 is formed.
  • the pipe 160 is fixed using a connecting bracket 170.
  • An inlet 161 of the pipe 160 passes through a rear wall 22 of a tub.
  • the outlet 162 of the pipe 160 is located inside the tub 2, and is close to a guiding apparatus 17 provided on the rear wall 22 of the tub.
  • the guiding apparatus 17 extends toward a bottom of the tub 2.
  • the guiding apparatus 17 may be a protruding rib.
  • the pipe 160 is made of metal or a material whose thermal conductivity is not inferior to that of metal.
  • the pipe 160 is spread into an annular structure, and has a rounded through hole 150.
  • the heat exchange apparatus 100 is fixed to the rear wall 22 of the tub 2 in various feasible manners, for example, welding, gluing, screwing, or injection molding.
  • An annular flat structure formed by the pipe 160 through coiling is coaxial with the bearing 23 on the rear wall 22 of the tub 2, and therefore is also disposed substantially coaxially with the drum 4.
  • the drive shaft 44 passes through the through hole 150 of the heat exchange apparatus 10.
  • the heat exchange apparatus 10 is disposed in such way that a size of the rear wall 22 of the tub can be fully utilized to spread the heat exchange apparatus, so that a heat exchange area is maximized, thereby improving heat exchange efficiency. In addition, in this manner, mounting of the tub 2 and the drum 4 and a drive system are not affected.
  • an acute angle may be implemented between each two adjacent bent sections of the pipe.
  • the flat body is vertically or obliquely mounted relative to a horizontal plane in a manner in which the tub and a drum are disposed, and the inlet of the fluid passage is higher than other portions of the fluid passage.
  • at least partial sections of the pipe are inclined downward relative to the horizontal plane along a direction in which a fluid flows.
  • the cooling medium is tap water. The cooling water can generate relatively large potential energy in an inclined bent area, and a relatively large turbulent flow in generated in a bent section. Therefore, precipitation and accumulation of sediments in water in the bending section are reduced, so that a water flow in the fluid passage is smoother, thereby avoiding blockage of the fluid passage.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Claims (9)

  1. Wäschetrockengerät, das eine Trommel (4) umfasst, die horizontal oder schräg angeordnet drehbar in einem Laugenbehälter (2) des Wäschetrockengeräts liegt, wobei eine Wand (41) der Trommel (4) mehrere dicht verteilte Löcher (42) aufweist, die ein Zirkulieren von zum Trocknen benutzten Prozessluftströmungen zwischen der Trommel (4) und dem Laugenbehälter (2) ermöglichen, eine Rückwand der Trommel (4) mit einer Antriebswelle (44) verbunden ist, die die Trommel (4) zum Drehen bringt, und die Antriebswelle (44) durch ein Lager (23) an einer Rückwand (22) des Laugenbehälters (2) verläuft, wobei der Laugenbehälter (2) mit einem Prozessluftkanal (5) verbunden ist, der mit einem Gebläse (7) versehen ist, wobei ein Lufteinlass (51) des Prozessluftkanals (5) an oder in der Nähe der Rückwand (22) des Laugenbehälters (2) liegt, die Wärmetauschvorrichtung (10, 100, 200) eine Rohrschlange (160, 260) umfasst, in der ein Fluidkanal (11, 110) ausgebildet ist, wobei das Rohr (160, 260) einen Einlass (161) und einen Auslass (162) aufweist und so der Fluidkanal (11, 110) zum Strömen eines Kühlmittels in dem Rohr gebildet wird, wobei das Rohr (160, 260) aus Metall oder einem Material hergestellt ist, dessen Wärmeleitfähigkeit der von Metall in nichts nachsteht, und zwischen der Rückwand (22) des Laugenbehälters (2) und der Rückwand (43) der Trommel (4) angebracht ist, dadurch gekennzeichnet, dass der Auslass (162) des Rohrs (160, 260) in dem Laugenbehälter (2) und in der Nähe einer Führungsvorrichtung (17) liegt, die an der Rückwand (22) des Laugenbehälters (2) vorgesehen ist, wobei die Führungsvorrichtung (17) zu einem unteren Teil des Laugenbehälters (2) hin verläuft.
  2. Wäschetrockengerät nach Anspruch 1, dadurch gekennzeichnet, dass die Wärmetauschvorrichtung an der Rückwand (22) des Laugenbehälters (2) befestigt ist.
  3. Wäschetrockengerät nach Anspruch 2, dadurch gekennzeichnet, dass zwischen dem Rohr (160, 260) und der Rückwand (22) des Laugenbehälters ein Montageabstand (18) besteht.
  4. Wäschetrockengerät nach Anspruch 1, dadurch gekennzeichnet, dass zum Ermöglichen einer Luftzirkulation zwischen Wänden (163) des Rohrs (160, 260) ein Spalt (164) besteht.
  5. Wäschetrockengerät nach Anspruch 4, dadurch gekennzeichnet, dass das Rohr (160, 260) mehrere Abschnitte umfasst, die durch Biegen oder Zusammenfalten gebildet sind, wobei jeder Abschnitt mithilfe einer Verbindungshalterung (170) befestigt ist.
  6. Wäschetrockengerät nach Anspruch 1, dadurch gekennzeichnet, dass das Rohr (160, 260) in eine ringförmige Anordnung verteilt ist.
  7. Wäschetrockengerät nach Anspruch 1, dadurch gekennzeichnet, dass das Rohr (160, 260) zusammengefaltet und gebogen und zwischen jedem von zwei benachbarten gebogenen Abschnitten ein spitzer Winkel ausgebildet ist.
  8. Wäschetrockengerät nach Anspruch 1, dadurch gekennzeichnet, dass das Rohr (160, 260) zusammengefaltet und gebogen ist und zueinander gebogene Abschnitte (2600) parallel zueinander verlaufen.
  9. Wäschetrockengerät nach Anspruch 1, dadurch gekennzeichnet, dass das Rohr (160, 260) zusammengefaltet und gebogen ist und mehrere zueinander gebogene Abschnitte aufweist und, wenn die Wärmetauschvorrichtung in Bezug auf eine horizontale Ebene vertikal oder schräg angebracht ist, zumindest Teile von Abschnitten des Rohrs in Bezug auf die horizontale Ebene in einer Kühlmittelströmungsrichtung nach unten geneigt sind.
EP19208789.8A 2018-11-30 2019-11-13 Wärmeaustauschvorrichtung und wäschetrocknungsgerät mit wärmeaustauschvorrichtung Active EP3660194B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811451043.6A CN111254671B (zh) 2018-11-30 2018-11-30 热交换装置及具有热交换装置的衣物烘干器具

Publications (2)

Publication Number Publication Date
EP3660194A1 EP3660194A1 (de) 2020-06-03
EP3660194B1 true EP3660194B1 (de) 2025-10-08

Family

ID=68581365

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19208789.8A Active EP3660194B1 (de) 2018-11-30 2019-11-13 Wärmeaustauschvorrichtung und wäschetrocknungsgerät mit wärmeaustauschvorrichtung

Country Status (2)

Country Link
EP (1) EP3660194B1 (de)
CN (1) CN111254671B (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117702438B (zh) * 2023-11-16 2025-09-23 珠海格力电器股份有限公司 一种衣物处理设备

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015070901A1 (en) * 2013-11-13 2015-05-21 Electrolux Appliances Aktiebolag Heat pump laundry dryer

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US3922798A (en) * 1974-08-19 1975-12-02 Gen Electric Clothes dryer
GB2338543B (en) 1998-06-18 2002-08-07 Gen Domestic Appliances Ltd Washer dryer
CN101113560A (zh) * 2006-07-28 2008-01-30 南京乐金熊猫电器有限公司 衣物烘干机
CN201390910Y (zh) * 2009-01-05 2010-01-27 上海凯奥机器有限公司 工业干衣机排风热量回收器
CN103015140A (zh) * 2012-12-21 2013-04-03 无锡小天鹅股份有限公司 干衣机
CN203247439U (zh) * 2013-04-22 2013-10-23 无锡小天鹅股份有限公司 一种有效提高全自动洗干一体机烘干效率的冷凝系统
CN104711833B (zh) * 2013-12-13 2018-04-06 博西华电器（江苏）有限公司 干衣机
CN105463804B (zh) 2014-07-15 2019-02-26 博西华电器（江苏）有限公司 干衣机
KR102366933B1 (ko) * 2015-07-30 2022-02-23 엘지전자 주식회사 세탁물 처리장치
CN105200748B (zh) * 2015-09-01 2018-10-16 无锡小天鹅股份有限公司 干衣机
CN106968090B (zh) * 2016-01-14 2020-12-01 博西华电器（江苏）有限公司 干衣机
EP3192912A1 (de) * 2016-01-14 2017-07-19 BSH Hausgeräte GmbH Wäschetrockner mit einem kühlwasserkreislauf
JP2019017532A (ja) * 2017-07-13 2019-02-07 三星電子株式会社Ｓａｍｓｕｎｇ Ｅｌｅｃｔｒｏｎｉｃｓ Ｃｏ．，Ｌｔｄ． 洗濯乾燥機
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Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015070901A1 (en) * 2013-11-13 2015-05-21 Electrolux Appliances Aktiebolag Heat pump laundry dryer

Also Published As

Publication number Publication date
CN111254671A (zh) 2020-06-09
EP3660194A1 (de) 2020-06-03
CN111254671B (zh) 2023-10-27

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