EP1856319B1 - Vorrichtung zur zuführung von heissluft in trommelwaschmaschine mit trockenfunktion - Google Patents

Vorrichtung zur zuführung von heissluft in trommelwaschmaschine mit trockenfunktion Download PDF

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Publication number
EP1856319B1
EP1856319B1 EP05856292A EP05856292A EP1856319B1 EP 1856319 B1 EP1856319 B1 EP 1856319B1 EP 05856292 A EP05856292 A EP 05856292A EP 05856292 A EP05856292 A EP 05856292A EP 1856319 B1 EP1856319 B1 EP 1856319B1
Authority
EP
European Patent Office
Prior art keywords
motor
blower
blower cover
duct housing
duct
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
EP05856292A
Other languages
English (en)
French (fr)
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EP1856319A2 (de
Inventor
Hwan Joo Myung
Choong Hwi 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.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
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 LG Electronics Inc filed Critical LG Electronics Inc
Publication of EP1856319A2 publication Critical patent/EP1856319A2/de
Application granted granted Critical
Publication of EP1856319B1 publication Critical patent/EP1856319B1/de
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
    • 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
    • D06F58/20—General details of domestic laundry dryers 

Definitions

  • the present invention relates to a drum type washer with dry function, and more particularly, to an apparatus for supplying hot air in a drum type washer with dry function, by which a laundry within a drum can be dried in a manner of forcibly blowing the generated hot air to the drum.
  • a drum type washer with dry function is an apparatus for removing dirt or filth from a laundry inputted to a drum using a proper detergent and mechanical force through washing, rinsing, dewatering, and drying cycles.
  • FIG. 1 is a cross-sectional diagram of a drum type washer with dry function according to a related art
  • FIG. 2 is a perspective diagram of a hot air supplying device consisting of a drying duct and a blower according to a related art.
  • a tub 4 is installed within a cabinet 2 to be horizontally supported by a spring and damper (not shown in the drawing).
  • a cylindrical drum 5 is rotatably installed within the tub 4 to wash a laundry inputted thereto.
  • a motor 7 is installed under the tub 7.
  • a drive pulley (not shown in the drawing) connected to the motor 7 via a belt 6 is provided in rear of the tub 4 to rotate the drum forward or reversely.
  • a water supply hose 9 connected to a water supply source is provided to one side of an upper part of the cabinet 2 to supply a detergent to the tub 4 via a detergent box 8.
  • a drain hose 11 connected to a drain pump 10 is provided to one side of a lower part of the cabinet 2 to drain water within the tub 4 outside.
  • a door (not shown in the drawing) opening/closing a front portion of the drum 5 is revolvably provided to a front portion of the cabinet 2.
  • a condensing duct 40 is provided to one side of the tub 4. One end of the condensing duct 40 communicates with a lower lateral part of the tub 4 and the other end of the condensing duct 40 communicates with the drying duct 30. Hence, the condensing duct 40 forms a circulation path together with the drying duct 30 and the tub 4.
  • a water supply nozzle is provided to one side of the condensing duct 40 to remove humidity from air introduced from the tub 4 in a manner of flowing cooling water.
  • the drying duct 30, as shown in FIG. 2 consists of a metallic upper housing 31, a metallic lower housing 32, and a blower cover 33 connected to one side of the upper housing 31. Moreover, a motor 35 and the blower 34 are assembled to each other centering on the same axis by leaving the blower cover 33 in-between.
  • the heater 36 is attached within the drying duct 30 to heat air flowing within the duct.
  • a motor guide 37 is provided to the blower cover 33 to have a recess for receiving the motor 35 therein.
  • a power cable guide slot is provided to the motor guide 37 to guide a power cable 39 of the motor 35.
  • a flange 33a is provided to an outer circumference of the blower cover 33 to be loaded on an outer circumference of the lower housing 32, and a plurality of locking holes 33b are provided to both sides of the flange 33a for screw-coupling with the lower housing 32.
  • the above-configured drying duct and blower 30 and 34 according to the related art are manufactured by iron-casting.
  • a locking place of the lower housing configuring the drying duct is varied according to a washing capacity of the washer, and a size of the blower drive motor and an installation direction of the power cable 39 are changed as well.
  • the blower cover 33 needs to be modified to correspond to the washing capacity of the washer. If the blower cover is applied to a specific washing capacity only, the product cost is raised as well as maintenance and management get difficult.
  • the upper and lower housings 31 and 32 configuring the drying duct 30 of the related art drum type washer with dry function are manufactured by iron casting using steel.
  • the blower 34 and the blower cover 33 are made of steel or stainless steel by casting or metallic processing. Hence, the corresponding product costs are high to raise the product cost of the washer/dryer.
  • a rim 34a, a base 34b, and a blade 34c need to be separately formed to be assembled. Hence, the corresponding manufacturing process is considerably complicated to further raise the product cost.
  • the present invention is directed to a drum type washer with dry function that substantially obviates one or more problems due to limitations and disadvantages of the related art.
  • An object of the present invention is to provide a drum type washer with dry function, by which a manufacturing process of a drying duct is simplified and by which a product cost is lowered.
  • Another object of the present invention is to provide a drum type washer with dry function, by which compatibility of a blower cover is enhanced to cope with variable sizes of a drying duct and motor according to washing capacity.
  • an apparatus for supplying hot air in a drum type washer according to the present invention includes the features of claim 1.
  • an apparatus for supplying hot air in a drum type washer with dry function includes a first duct housing provided to a tub included in the drum type washer, a second duct housing provided to an upper side of the first duct housing, a blower cover provided to the upper side of the first duct housing adjacent to the second duct housing, the blower cover being formed of a synthetic resin based material, the blower cover having a recess, a heater provided between the first and second duct housings, a motor coupled with the recess of the blower cover, a blower under the blower cover, the blower being rotatably connected to the motor, and a motor guide protruding upward along an outer circumference of the recess of the blower cover, the motor guide including a plurality of bosses having screws locked therein for coupling with the motor, respectively and at least one escape recess for receiving a projected portion of a locking screw separately locked in the motor.
  • FIG. 1 is a cross-sectional diagram of a drum type washer with dry function according to a related art
  • FIG. 2 is a perspective diagram of a hot air supplying device consisting of a drying duct and a blower according to a related art
  • FIG. 3 is a projected perspective diagram of a hot air supplying apparatus according to one embodiment which does not form part of the invention but represents background art that is usefull for understanding the invention.
  • FIG. 4 is a graph of temperature measurement results at major parts of a blower and drying duct on a drying operation
  • FIG. 5 is a projected perspective diagram of a hot air supplying apparatus according to another embodiment of the present invention.
  • FIG. 6 is a projected perspective diagram of major parts of the hot air supplying apparatus of FIG. 5 ;
  • FIG. 7 is a perspective diagram of the hot air supplying apparatus of FIG. 6 .
  • FIG. 3 is a projected perspective diagram of a hot air supplying apparatus according to one embodiment of the present invention.
  • a hot air supplying apparatus 300 includes a lower housing 320 forming a air-flowing passage, an upper housing 310 assembled to a top portion of the lower housing 320, and a blower cover 330 assembled to a top portion of the lower housing 320 at one side of the upper housing 310 to contact with the upper housing 310. Additionally, the upper housing 320, the lower housing 310, and the blower cover 330 construct a drying duct for air-flowing.
  • the blower 340 is provided to one end of the lower housing 320, and more specifically, to a portion of the lower housing 320 communicating with the condensing duct 40 in FIG. 1 , and a heater 360 is provided to an opposite side to the lower housing 320 to heat air blown by the blower 340.
  • the lower housing 320 can be formed by casting using steel.
  • the upper housing 310 can be formed by pressing using a zinc plate or preferably by injection molding using a synthetic resin material such as a plastic material.
  • the upper housing 310 can be formed by casting using steel like the lower housing 320 as well.
  • the blower 340 is formed by injection molding of a synthetic resin material having a high heat resistant property.
  • the blower cover 330 is formed by injection molding of a synthetic resin material having a high heat-resistant property.
  • a recess 331 for receiving a motor 350 driving the blower 340 therein is provided to the blower cover 330.
  • a motor guide 370 protrudes from a circumference of the recess 331 to load the motor 350 therein and to fix the motor 350 thereto.
  • a rotational shaft of the motor 350 penetrates into the blower cover 330 to be coupled to the blower 340 for shaft-coupling.
  • FIG. 4 is a graph of temperature-measurement results at major parts of a blower and drying duct on a drying operation.
  • temperature sensors are attached to a portion A of the blower cover 300 having the blower 340 installed therein, a heater entrance B in the vicinity of a connecting part between the blower cover 330 and the upper housing 310, and a portion C of the upper housing 310 provided over the heater 360, respectively.
  • a drying cycle is then carried out to measure temperature variations of the respective portions A, B, and C according to time.
  • the vicinity A of the blower 340 has a maximum temperature of 75°C and the entrance B of the heater 360 has a temperature of about 80°C.
  • the vicinity of the blower cover 330 in the vicinity of the blower 340 has a prescribed amount of heat dissipation and cooling effects attributed to a rotation of the blower 340.
  • Air that passes through the blower 340 and the blower cover 330 is further passed through the condensing duct 40 in FIG. 1 to decrease in humidity and temperature.
  • the temperature is not so high as to break down the synthetic resin material having high heat-resistant property.
  • a synthetic resin having an excellent heat-resistant property such as PVDF (polyvinylidene fluoride), POM (polyactal copoymer), and the like is preferably used as a material having excellent resistant properties against moisture, strong alkalinity, and oxidation.
  • the POM can sustain excellent properties including mechanical strength, hardness, creep-proof, and the like as well as various kinds of mechanical feasibility by 100°C.
  • the PVDF has a melting point of 170 ⁇ 185°C and a continuously usable temperature of 120°C that is the lowest among fluoride resins. Yet, the PVDF has excellent processing features of injection molding, pressing forming, and the like as well as excellent mechanical and weathering properties.
  • blower 340, the blower cover 330, and the upper housing 310 are formed by an injection process using a highly heat-resistant synthetic resin, they can be manufactured by a single process unlike the casting method which requires multiple steps. Hence, it is able to lower product cost, thus reducing overall product cost.
  • a hot air supplying apparatus is explained with reference to FIGs. 5 to 7 as follows.
  • First of all configurations and materials of a lower housing 1320, an upper housing 1310, and a blower 1340 of a hot air supplying apparatus 1300 according to another embodiment of the present invention are substantially identical to those of the former hot air supplying apparatus 300 according to one embodiment of the present invention.
  • the hot air supplying apparatus 1300 according to another embodiment of the present invention differs from the apparatus 300 in configurations of a blower cover 1330 and a motor 1350 assembled to the blower cover 1330.
  • a recess 1331 is provided to the blower cover 1330 to receive the motor 1350 therein.
  • a motor guide 1370 protrudes upward along a circumference of the recess 1331.
  • a plurality of bosses 1371 are built in one body of the motor guide 1370 to fix the motor 1350 and the motor guide 1370 to each other.
  • a plurality of cable guide slots 1373 are provided to the motor guide 1370 to draw out a power cable 1352 of the motor 1350 that is loaded in the blower cover 1330.
  • each top end of the cable guide slots 1373 is fully open.
  • a motor cover 1355 is fixed to a top portion of the motor 1350 via a plurality of locking screws 1356. In doing so, each of the locking screws 1356 is slightly projected downward. Hence, it is preferable that a plurality of escape recesses 1372 are concavely provided to the motor guide 1370 to receive the corresponding locking screws 1356 therein, respectively. Each of the escape recesses 1372 plays a role in preventing a lower end of the projected locking screw 1356 from colliding with the motor guide 1370, thereby smoothing the corresponding locking.
  • the drum type washer with dry function is differently manufactured according to washing capacity such as 7.5kg, 10kg, and the like.
  • a size and configuration of the motor 1350 driving the blower 1340 are designed differently to correspond to the washing capacity.
  • the recess 1331 having the motor 1350 received therein has a depth enough for each of the various motors 1350 to be locked therein.
  • a position of the power cable 1352 for supplying power of the motor is varied according to the corresponding one of the various motors.
  • a plurality of the cable guide slots 1373 are provided along a circumference of the motor guide 1370 not to interfere with the position of the power cable 1352 of the motor.
  • a pump (not shown in the drawing) is provided to a lower part of the drum type washer with dry function.
  • a hose connected to the pump may traverse over the drying duct due to a configurational reason.
  • a guide part 1338 and a support recess 1339 are preferably provided to one side of the motor guide 1370 to support the hose or cable.
  • the support recess 1339 having an open top is provided to the guide part 1338.
  • a flange 1335 is provided to a circumference of the blower cover 1330 except the portion connected to the upper housing 1310 to be loaded on an outer circumference of the lower housing 1320.
  • a plurality of locking holes 1336 are provided to the flange 1335.
  • a plurality of the locking holes 1336 are preferably provided to leave a prescribed distance from each other to secure compatibility of the lower housing 1320 of which locking position through the locking holes 1336 varies according to capacity of the washer/dryer.
  • each of the locking holes 1336 may be a long hole 1337.
  • the blower 1340 and the blower cover 1330 are formed by injection molding using a synthetic resin material having an excellent heat-resistant property such as plastic.
  • the motor guide 1370 is formed by injection molding together with the blower cover 1330.
  • the motor guide 1370 can be separately formed by injection molding and assembled to the blower cover 1330.
  • the motor cover 1355 is assembled to the top portion of the motor 1350 using the locking screws 1356. In doing so, the locking screws 1356 are slightly projected downward.
  • the motor 1350 is inserted inside the recess 1331 of the blower cover 1331 to be loaded in the motor guide 1370.
  • the power cable 1352 of the motor 1350 is drawn out via the guide slot 1373.
  • the locking screws 1356 are inserted in the escape recesses 1372 of the motor guide 1370 to prevent interference with a surface of the motor guide 1370, respectively.
  • Screws 1358 are then locked via the locking holes 1357 of the motor 1350 and the bosses 1371 of the motor guide 1370, respectively to fixedly assemble the motor 1350 to the motor guide 1370.
  • the blower cover 1330 is loaded on the lower housing 1320. Subsequently, screws 1380 are locked via the locking holes 1336 and long holes 1337 of the flange 1335 and the locking holes 1322 of the lower housing 1320, respectively to assemble the blower cover 1330 to the lower housing 1320.
  • the locking screw 1356 projected from the motor 1350 avoids contacting with the motor guide 1370 and the power cable 1352 of the motor 1350 can be easily drawn out via one of the cable guide slots 1373 provided to various locations of the motor guide 1370.
  • it is able to fix the motor 1350 variously differing in size thereto using the same blower cover 1330 without modifying the structure of the blower cover 1330.
  • the present invention simplifies the manufacturing process and lowers the product cost, thereby enhancing user's economical advantage and reliability on the product and manufacturer.
  • blower cover is applicable despite modifications of the structures and sizes of the lower housing and motor according to the capacity of the washer, whereby the present invention enhances compatibility, lowers the product cost, and facilitates maintenance and management thereof.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Drying Of Solid Materials (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)

Claims (8)

  1. Vorrichtung zur Zuführung von Heißluft in eine Trommelwaschmaschine mit Trockenfunktion, die aufweist: ein erstes Kanalgehäuse (1320), das für einen Laugenbehälter vorgesehen ist, der in der Trommelwaschmaschine enthalten ist; ein zweites Kanalgehäuse (1310), das an einer Oberseite des ersten Kanalgehäuses (1320) vorgesehen ist; eine Gebläseabdeckung (1330), die an einer Oberseite des ersten Kanalgehäuses (1320) benachbart zum zweiten Kanalgehäuse (1310) vorgesehen ist, und wobei die Gebläseabdeckung (1330) eine Aussparung (1331) aufweist; eine Heizvorrichtung (1360), die zwischen dem ersten und zweiten Kanalgehäuse (1320, 1310) vorgesehen ist; einen Motor (1350), der mit der Aussparung (1331) der Gebläseabdeckung (1330) gekoppelt ist; ein Gebläse (1340), das unter der Gebläseabdeckung (1330) vorgesehen ist, wobei das Gebläse (1340) drehbar mit dem Motor (1350) verbunden ist; und eine Motorführung (1370), die längs eines Außenumfangs der Aussparung der Gebläseabdeckung (1330) nach oben vorsteht,
    dadurch gekennzeichnet, daß
    die Gebläseabdeckung (1330) aus einem auf Kunstharz beruhenden Material ausgebildet ist, daß
    die Motorführung (1370) mehrere runde Vorsprünge (1371), in denen jeweils Schrauben zur Kopplung mit dem Motor (1350) gesichert sind; und mindestens eine Fluchtaussparung (1372) zur Aufnahme eines vorstehenden Abschnitts einer Sicherungsschraube (1356) aufweist, die getrennt im Motor gesichert ist; und daß
    die Vorrichtung ferner einen Flansch (1335) aufweist, der für einen Umfang der Gebläseabdeckung (1330) vorgesehen ist, wobei mehrere Sicherungslöcher (1336) für den Flansch vorgesehen und an vorgeschriebenen Abständen vom anderen Loch vorgesehen sind.
  2. Vorrichtung nach Anspruch 1, wobei das Gebläse (1340) aus einem Spritzmaterial aus einem auf Kunstharz beruhenden Material ausgebildet ist.
  3. Vorrichtung nach Anspruch 1, wobei das zweite Kanalgehäuse (1310) aus einem Spritzmaterial aus einem auf Kunstharz beruhenden Material ausgebildet ist.
  4. Vorrichtung nach Anspruch 1, wobei das zweite Kanalgehäuse (1310) aus Zink ausgebildet ist.
  5. Vorrichtung nach Anspruch 1, wobei die Motorführung (1370) in einem Körper der Gebläseabdeckung (1330) durch Spritzgießen aufgebaut ist.
  6. Vorrichtung nach Anspruch 1, wobei die Motorführung (1370) getrennt ausgebildet ist, um an die Gebläseabdeckung (1330) montiert zu werden.
  7. Vorrichtung nach Anspruch 6, wobei die Motorführung (1370) aus einem Spritzmaterial aus einem auf Kunstharz beruhenden Material besteht.
  8. Vorrichtung nach Anspruch 1, wobei eine Form des Sicherungslochs kreisförmig, quadratisch, oval oder rechteckig sein kann.
EP05856292A 2005-03-09 2005-03-09 Vorrichtung zur zuführung von heissluft in trommelwaschmaschine mit trockenfunktion Not-in-force EP1856319B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/KR2005/000648 WO2006095935A2 (en) 2005-03-09 2005-03-09 Apparatus for supplying hot air in drum type washer with dry function

Publications (2)

Publication Number Publication Date
EP1856319A2 EP1856319A2 (de) 2007-11-21
EP1856319B1 true EP1856319B1 (de) 2009-10-07

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EP05856292A Not-in-force EP1856319B1 (de) 2005-03-09 2005-03-09 Vorrichtung zur zuführung von heissluft in trommelwaschmaschine mit trockenfunktion

Country Status (6)

Country Link
EP (1) EP1856319B1 (de)
CN (1) CN100590250C (de)
AT (1) ATE445041T1 (de)
AU (1) AU2005328773B2 (de)
DE (1) DE602005017078D1 (de)
WO (1) WO2006095935A2 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109537257A (zh) * 2019-01-03 2019-03-29 曾庆兰 一种家电系统的风导系统
KR20220113024A (ko) * 2021-02-05 2022-08-12 엘지전자 주식회사 의류처리장치

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT218167Z2 (it) * 1988-05-30 1992-04-08 Zanussi A Spa Industrie Dispositivo di riscaldamento per macchina combinata per il lavaggio e l'asciugatura della biancheria.
KR100446773B1 (ko) * 2002-04-24 2004-09-01 엘지전자 주식회사 드럼형 건조세탁기의 통기장치

Also Published As

Publication number Publication date
EP1856319A2 (de) 2007-11-21
WO2006095935A3 (en) 2007-03-08
DE602005017078D1 (de) 2009-11-19
CN100590250C (zh) 2010-02-17
ATE445041T1 (de) 2009-10-15
WO2006095935A2 (en) 2006-09-14
CN101142354A (zh) 2008-03-12
AU2005328773B2 (en) 2009-08-20
AU2005328773A1 (en) 2006-09-14

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