WO2012093337A2 - Household appliance, in particular laundry dryer - Google Patents

Household appliance, in particular laundry dryer Download PDF

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Publication number
WO2012093337A2
WO2012093337A2 PCT/IB2012/000171 IB2012000171W WO2012093337A2 WO 2012093337 A2 WO2012093337 A2 WO 2012093337A2 IB 2012000171 W IB2012000171 W IB 2012000171W WO 2012093337 A2 WO2012093337 A2 WO 2012093337A2
Authority
WO
WIPO (PCT)
Prior art keywords
casing
blower
drum
household appliance
flap gate
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/IB2012/000171
Other languages
French (fr)
Other versions
WO2012093337A3 (en
Inventor
Miran Razborsek
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.)
Gorenje dd
Original Assignee
Gorenje dd
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 Gorenje dd filed Critical Gorenje dd
Priority to EP12704547.4A priority Critical patent/EP2661521B1/en
Priority to RU2013134956/12A priority patent/RU2566931C2/en
Priority to PL12704547T priority patent/PL2661521T3/en
Priority to US13/996,062 priority patent/US20130269202A1/en
Priority to UAA201309352A priority patent/UA108416C2/en
Publication of WO2012093337A2 publication Critical patent/WO2012093337A2/en
Publication of WO2012093337A3 publication Critical patent/WO2012093337A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
    • D06F58/04—Details 
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/44—Fluid-guiding means, e.g. diffusers
    • F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
    • F04D29/48—Fluid-guiding means, e.g. diffusers adjustable for unidirectional fluid flow in reversible pumps
    • F04D29/483—Fluid-guiding means, e.g. diffusers adjustable for unidirectional fluid flow in reversible pumps especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/06—Chambers, containers, or receptacles
    • F26B25/14—Chambers, containers, receptacles of simple construction
    • F26B25/16—Chambers, containers, receptacles of simple construction mainly closed, e.g. drum
    • 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

Definitions

  • Household appliance in particular laundry dryer
  • the present invention refers to a household appliance, in particular a laundry dryer comprising a bi-directionally rotating drum to accommodate laundry to be dried, a generator of hot air circulating inside said drum, and a blower to supply said hot air into said drum.
  • a laundry dryer of the aforementioned kind is well known and, due to the arrangement of the blower in a helical casing in order to efficiently supply air into a drum of the laundry dryer, said blower is optimized for uni-directional rotation only that is in the direction of radial divergence of the casing and the blower.
  • the blower casing is formed in a manner to achieve optimal conditions with regard to the air flow efficiency with the air flow of the constant direction, whereas the air flow efficiency into opposite direction is significantly lower. In the latter case the air impacts the wall of the blower casing resulting in the air turbulence, flow reduction and lower air supply into said drum.
  • a channel is attached to a helical casing in which a blower is arranged, said blower supplying a drying air flow into a drum.
  • a flap gate is formed on the outer perimeter of said helical casing and in the area thereof being close to said blower, said flap gate being constantly pressed against said casing due to the gravitational force.
  • Fig. 1 shows a schematic view of a household appliance, in particular laundry dryer according to the invention
  • Fig. 2 a cross-sectional view of the household appliance of Fig. 1 along the line II-II with blower rotating into the first direction, and
  • FIG. 3 a cross-sectional view of the household appliance of Fig. 1 along the line II-II with blower rotating into the second direction.
  • a household appliance, in particular laundry dryer according to the invention comprises a housing 1 in which a rotating drum 2 is arranged to accommodate laundry to be dried.
  • a condenser 3 is arranged in the area under said drum 2, the first blower 4 being placed below said condenser forcing a flow Ti of the cooling air through said condenser 3 cooling therewith a flow T 2 of the hot and wet air flowing from said drum 2 and being taken from the laundry to be dried.
  • a channel 5 is directed from said condenser 3 conducting condensate removed from said flow T 2 , said condensate flowing further through a condensate pipeline 6 into a condensate receptacle 7.
  • a pumping means 8 is arranged in said condensate receptacle 7 forcing said condensate through pipeline 9 into a tank 10 above said drum 2. Said pumping means 8 is controlled in a manner known per se by means of electronic controller of the dryer according to the invention.
  • a second blower 11 is arranged in an extension of said channel 5 forcing an air flow T3, which comes from the condenser 3, via a channel 12 and through a heater 13 into said drum 2.
  • Said blowers 4, 11 are preferably arranged on the same axis and driven simultaneously by means of a single driving unit 14.
  • said drum 2 is driven by means of said driving unit 14 utilizing a transmission means 2a, such as a belt for example.
  • a steam generator 15 is arranged in the area below said drum 2, a water preferably a distilled water being fed into said generator 15 by means of a pump 16 which pumps said water from a water container 17 being arranged at the same level in the neighbourhood of the condensate receptacle 7.
  • Said container 17 is fed via a supply line 18 from said water tank 10 above the drum 2.
  • a sensor 19 being arranged in said water container 17 which in case of low water level in said container 17 transmits an appropriate signal to the display of the control panel of the laundry dryer, thus warning the user of the low water level.
  • the user himself must add water, preferably distilled water, into said water tank 10 above the drum 2 where from said water overflows via said supply line 18 into said container 17.
  • said container 17 is completely filled with water the surplus of the water flows via overflow 20 into said receptacle 7.
  • said channel 12 is associated to a helical casing 21 in which said blower 11 is arranged, said blower 11 forcing into said drum 2 said air flow T 3 supplied from the condenser 3.
  • Said helical casing 21 being associated to said channel 12 in a way that said casing 21 is placed in a leakproof manner entirely inside said channel 12.
  • Said helical casing 21 is formed in the area thereof being close to said blower and on the outer perimeter thereof with a flap gate 22 being capable of rotate preferably about an axis 23 arranged on said casing 21 and parallel with the axis of the driving unit 14.
  • Said rotating axis 23 of said flap gate 22 is placed onto said casing 21 preferably at the side where said blower 11 and said helical casing 21 diverge in radial direction. Furthermore, it is provided for according to the present invention that said flap gate 22 is arranged on said casing 21 on the side and in the manner that it is always pressed against said casing by the gravitational force when the household appliance is non- operating.
  • said flap gate 22 is lifted by said air flow T3, thus enabling unobstructed air flow via a freed opening 25 into said channel 12 and further into the drum 2.
  • said flap gate 22 drops due to the gravitational force back on the casing 21, thus closing said opening 25.
  • the invention has been presented and described on the basis of the embodiment of the laundry dryer with a heat exchanger comprising two blowers being preferably arranged on the same axis and driven simultaneously by means of a single driving unit.
  • the invention may be used with different embodiments of the laundry dryer, such as the laundry dryer comprising a heat pump, or with the embodiment comprising more than two blowers, without departing from the spirit and scope of the present invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Abstract

The present invention relates to a household appliance, in particular a laundry dryer comprising a bi-directionally rotating drum to accommodate laundry to be dried, a generator of hot air circulating inside said drum, and a blower to supply said hot air into said drum. It is provided for according to the invention that a channel (12) is attached to a helical casing (21) in which a blower (11) is arranged, said blower (11) supplying an air flow (T3) into a drum (2). A swingable flap gate (22) is formed on the outer perimeter of said helical casing (21) and in the area thereof being close to said blower (11), said flap gate (22) being always pressed against said casing (21) by the gravitational force.

Description

Household appliance, in particular laundry dryer
The present invention refers to a household appliance, in particular a laundry dryer comprising a bi-directionally rotating drum to accommodate laundry to be dried, a generator of hot air circulating inside said drum, and a blower to supply said hot air into said drum. A laundry dryer of the aforementioned kind is well known and, due to the arrangement of the blower in a helical casing in order to efficiently supply air into a drum of the laundry dryer, said blower is optimized for uni-directional rotation only that is in the direction of radial divergence of the casing and the blower. This means that the blower casing is formed in a manner to achieve optimal conditions with regard to the air flow efficiency with the air flow of the constant direction, whereas the air flow efficiency into opposite direction is significantly lower. In the latter case the air impacts the wall of the blower casing resulting in the air turbulence, flow reduction and lower air supply into said drum.
It is the object of the present invention to create a household appliance, in particular laundry dryer which will eliminate drawbacks of the known solutions.
The object as set above is solved by means of the features according to the characterizing portion of the claim 1. It is provided for according to the present invention that a channel is attached to a helical casing in which a blower is arranged, said blower supplying a drying air flow into a drum. A flap gate is formed on the outer perimeter of said helical casing and in the area thereof being close to said blower, said flap gate being constantly pressed against said casing due to the gravitational force.
A household appliance, in particular laundry dryer according to the invention is further described in detail on the basis of the preferred embodiment and with reference to the accompanying drawings, where
Fig. 1 shows a schematic view of a household appliance, in particular laundry dryer according to the invention,
Fig. 2 a cross-sectional view of the household appliance of Fig. 1 along the line II-II with blower rotating into the first direction, and
Fig. 3 a cross-sectional view of the household appliance of Fig. 1 along the line II-II with blower rotating into the second direction. A household appliance, in particular laundry dryer according to the invention comprises a housing 1 in which a rotating drum 2 is arranged to accommodate laundry to be dried. A condenser 3 is arranged in the area under said drum 2, the first blower 4 being placed below said condenser forcing a flow Ti of the cooling air through said condenser 3 cooling therewith a flow T2 of the hot and wet air flowing from said drum 2 and being taken from the laundry to be dried. A channel 5 is directed from said condenser 3 conducting condensate removed from said flow T2, said condensate flowing further through a condensate pipeline 6 into a condensate receptacle 7. A pumping means 8 is arranged in said condensate receptacle 7 forcing said condensate through pipeline 9 into a tank 10 above said drum 2. Said pumping means 8 is controlled in a manner known per se by means of electronic controller of the dryer according to the invention.
A second blower 11 is arranged in an extension of said channel 5 forcing an air flow T3, which comes from the condenser 3, via a channel 12 and through a heater 13 into said drum 2. Said blowers 4, 11 are preferably arranged on the same axis and driven simultaneously by means of a single driving unit 14. In addition, said drum 2 is driven by means of said driving unit 14 utilizing a transmission means 2a, such as a belt for example. Furthermore, a steam generator 15 is arranged in the area below said drum 2, a water preferably a distilled water being fed into said generator 15 by means of a pump 16 which pumps said water from a water container 17 being arranged at the same level in the neighbourhood of the condensate receptacle 7. Said container 17 is fed via a supply line 18 from said water tank 10 above the drum 2. A sensor 19 being arranged in said water container 17 which in case of low water level in said container 17 transmits an appropriate signal to the display of the control panel of the laundry dryer, thus warning the user of the low water level. In such an instance the user himself must add water, preferably distilled water, into said water tank 10 above the drum 2 where from said water overflows via said supply line 18 into said container 17. When said container 17 is completely filled with water the surplus of the water flows via overflow 20 into said receptacle 7.
It is provided for according to the present invention that said channel 12 is associated to a helical casing 21 in which said blower 11 is arranged, said blower 11 forcing into said drum 2 said air flow T3 supplied from the condenser 3. Said helical casing 21 being associated to said channel 12 in a way that said casing 21 is placed in a leakproof manner entirely inside said channel 12. Said helical casing 21 is formed in the area thereof being close to said blower and on the outer perimeter thereof with a flap gate 22 being capable of rotate preferably about an axis 23 arranged on said casing 21 and parallel with the axis of the driving unit 14. Said rotating axis 23 of said flap gate 22 is placed onto said casing 21 preferably at the side where said blower 11 and said helical casing 21 diverge in radial direction. Furthermore, it is provided for according to the present invention that said flap gate 22 is arranged on said casing 21 on the side and in the manner that it is always pressed against said casing by the gravitational force when the household appliance is non- operating.
When the drum 2 and the blower 11 rotates in the same direction, into direction of divergence of said blower 11 and said casing 21 (cf. arrow A in Fig. 2) in the embodiment shown, said flap gate 22 is pressed due to the gravitational force against said casing 21. Said blower 11 forces said air flow T3 through a pressure section 24 of said casing 21 and via said channel 12 into said drum 2. However, when the drum 2 and the blower 11 rotates in the direction which is opposite from the first mentioned direction, into direction of merging of said blower 11 and said casing 21 (cf. arrow B in Fig. 3) in the embodiment shown, said flap gate 22 is lifted by said air flow T3, thus enabling unobstructed air flow via a freed opening 25 into said channel 12 and further into the drum 2. When the drum 2 and the blower 11 rotates again into the first mentioned direction, said flap gate 22 drops due to the gravitational force back on the casing 21, thus closing said opening 25. The solution according to the present invention substantially increases conditions with the bi-directional rotation of the drum of the laundry dryer, resulting in laundry being dried more consistently. Furthermore, the solution according to the invention enables good energy utilisation of the laundry dryer in spite of the bi-directional rotation of the drum. The invention has been presented and described on the basis of the embodiment of the laundry dryer with a heat exchanger comprising two blowers being preferably arranged on the same axis and driven simultaneously by means of a single driving unit. However, the invention may be used with different embodiments of the laundry dryer, such as the laundry dryer comprising a heat pump, or with the embodiment comprising more than two blowers, without departing from the spirit and scope of the present invention.

Claims

Claims
1. A household appliance, in a particular laundry dryer comprising a bi-directionally rotating drum to accommodate laundry to be dried, a generator of hot air circulating inside said drum, and a blower to supply said hot air into said drum, characterized in that a channel (12) is attached to a helical casing (21) in which a blower (11) is arranged, said blower (11) supplying an air flow (T3) into a drum (2), a swingable flap gate (22) is formed on the outer perimeter of said helical casing (21) and in the area thereof being close to said blower (11), said flap gate (22) being arranged on said casing (21) on the side and in the manner that it is always pressed against said casing (21) by the gravitational force when the household appliance is non-operating.
2. A household appliance according to claim 1, characterized in that said helical casing
(21) is associated to said channel (12) in a way that said casing (21) is placed in a leakproof manner entirely inside said channel (12).
3. A household appliance according to claims 1 and 2, characterized in that flap gate
(22) is capable of rotate preferably about an axis (23) arranged on said casing (21) and parallel with the axis of the driving unit (14).
4. A household appliance according to claims 1 to 3, characterized in that said rotating axis (23) of said flap gate (22) is placed onto said casing (21) preferably at the side where said blower (11) and said helical casing (21) diverge in radial direction.
PCT/IB2012/000171 2011-01-04 2012-01-03 Household appliance, in particular laundry dryer Ceased WO2012093337A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP12704547.4A EP2661521B1 (en) 2011-01-04 2012-01-03 Household appliance, in particular laundry dryer
RU2013134956/12A RU2566931C2 (en) 2011-01-04 2012-01-03 Household appliance, in particular dryer for clothes
PL12704547T PL2661521T3 (en) 2011-01-04 2012-01-03 Household appliance, in particular laundry dryer
US13/996,062 US20130269202A1 (en) 2011-01-04 2012-01-03 Household appliance, in particular laundry dryer
UAA201309352A UA108416C2 (en) 2011-01-04 2012-03-01 HOUSEHOLD APPLIANCES, INCLUDING WHITE DRYER

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SIP-201100007 2011-01-04
SI201100007A SI23612A (en) 2011-01-04 2011-01-04 House appliance, especially laundry machine

Publications (2)

Publication Number Publication Date
WO2012093337A2 true WO2012093337A2 (en) 2012-07-12
WO2012093337A3 WO2012093337A3 (en) 2012-08-30

Family

ID=45688191

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2012/000171 Ceased WO2012093337A2 (en) 2011-01-04 2012-01-03 Household appliance, in particular laundry dryer

Country Status (7)

Country Link
US (1) US20130269202A1 (en)
EP (1) EP2661521B1 (en)
PL (1) PL2661521T3 (en)
RU (1) RU2566931C2 (en)
SI (1) SI23612A (en)
UA (1) UA108416C2 (en)
WO (1) WO2012093337A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012078797A (en) * 2010-09-09 2012-04-19 Jsr Corp Method for forming resist pattern

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SI23735A (en) 2011-05-04 2012-11-30 GORENJE@gospodinjski@aparati@d@d Laundry dryer with heat pump
EP4737634A2 (en) * 2021-02-08 2026-05-06 LG Electronics Inc. Laundry treating apparatus and method for controlling the same
KR20260028045A (en) * 2021-02-08 2026-03-03 엘지전자 주식회사 A laundry treating apparatus
CN117403426A (en) * 2022-07-08 2024-01-16 湖北美的洗衣机有限公司 A rear cover assembly and clothes drying equipment

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1680775A (en) * 1926-06-09 1928-08-14 Bbc Brown Boveri & Cie Reversible blower apparatus
DE3039685A1 (en) * 1980-10-21 1982-06-09 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart LAUNDRY DRYER WITH A RADIAL BLOWER
JP5097072B2 (en) * 2008-09-29 2012-12-12 パナソニック株式会社 Drum washing machine
KR20100041032A (en) * 2008-10-13 2010-04-22 삼성전자주식회사 Clothing dryer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012078797A (en) * 2010-09-09 2012-04-19 Jsr Corp Method for forming resist pattern

Also Published As

Publication number Publication date
EP2661521B1 (en) 2015-08-05
EP2661521A2 (en) 2013-11-13
WO2012093337A3 (en) 2012-08-30
US20130269202A1 (en) 2013-10-17
UA108416C2 (en) 2015-04-27
SI23612A (en) 2012-07-31
PL2661521T3 (en) 2015-11-30
RU2013134956A (en) 2015-02-10
RU2566931C2 (en) 2015-10-27

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