WO2017194531A1 - A laundry washing-drying machine comprising a water-cooled condenser - Google Patents

A laundry washing-drying machine comprising a water-cooled condenser Download PDF

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Publication number
WO2017194531A1
WO2017194531A1 PCT/EP2017/061040 EP2017061040W WO2017194531A1 WO 2017194531 A1 WO2017194531 A1 WO 2017194531A1 EP 2017061040 W EP2017061040 W EP 2017061040W WO 2017194531 A1 WO2017194531 A1 WO 2017194531A1
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WO
WIPO (PCT)
Prior art keywords
duct
drying
air
condenser
water
Prior art date
Application number
PCT/EP2017/061040
Other languages
French (fr)
Inventor
Mutlu IPEK
Vasi Kadir Ertis
Yusuf Koc
Sedat TOKGOZ
Original Assignee
Arcelik Anonim Sirketi
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 Arcelik Anonim Sirketi filed Critical Arcelik Anonim Sirketi
Publication of WO2017194531A1 publication Critical patent/WO2017194531A1/en

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    • 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 
    • D06F58/24—Condensing arrangements

Definitions

  • the present invention relates to a laundry washing-drying machine comprising a water-cooled condenser.
  • the cooling water may be dragged along by the drying air so as to reach the laundry, causing the drying performance to decrease.
  • the aim of the present invention is the realization of a laundry washing-drying machine the drying performance of that is improved.
  • the laundry washing-drying machine realized in order to attain the aim of the present invention, explicated in the claims, comprises a drum wherein the drying process is performed; a circulation duct wherein the process air, that provides the drying of the laundry in the drum, is circulated; a condenser that is disposed on the circulation duct and that dehumidifies the process air; at least one drying duct that is disposed in the condenser and wherein the process air passes, and a water spraying device that is connected to the water line, that extends into the condenser and that enables the condenser to be cooled by spraying water into the air duct.
  • the laundry washing-drying machine of the present invention comprises at least one fan that is disposed on the condenser and that generates an air flow perpendicularly to the flow of the process air in the drying duct.
  • an air curtain is formed in the drying duct and the air curtain exerts a thrust force on the droplets of the cooling water perpendicularly to the flow direction of the process air so as to prevent the droplets of the cooling water from being dragged out of the condenser.
  • the cooling water is prevented from being delivered to the laundry and the drying performance of the laundry washing-drying machine is improved.
  • the fan is positioned on the condenser in close proximity to the outlet of the drying duct from which the process air leaves the drying duct.
  • the droplets carried up to the outlet of the drying duct are enabled to be separated from the process air.
  • the condenser is provided with an air duct wherein the fan is disposed, that has at least one inlet opening through which the air drawn from the drying duct by means of the fan enters and at least one outlet opening that enables the air received from the inlet opening to be delivered back to the drying duct.
  • the process air carrying the droplets of the cooling water is enabled to be circulated in the drying duct and the efficiency of the air curtain is improved.
  • the inlet opening is disposed on the upper part of the condenser so as to provide that the dehumidified process air is taken into the air duct immediately before leaving the drying duct, and the outlet opening is disposed in the mid-section of the condenser so as to provide that the air circulating in the air duct is delivered almost to the mid-section of the drying duct.
  • the air delivered from the outlet opening back into the condenser is prevented from affecting the air flow profile at the inlet of the drying duct.
  • the air duct has at least one upright wall whereon the process air passing therethrough contacts.
  • the water droplets carried with the air taken into the air duct are enabled to hit the upright wall so as to accumulate thereon and to trickle down by gravity.
  • the water spraying device is disposed on the condenser so as to remain between the inlet opening and the outlet opening.
  • the air flow generated by the fan is prevented from affecting the flow of the cooling water.
  • the cooling water is prevented from being dragged along by the process air out of the drying duct and reaching the circulating duct.
  • the performance of the heater in the laundry washing-drying machine is prevented from decreasing and the drying performance is improved.
  • Figure 1 – is the schematic view of the laundry washing-drying machine related to an embodiment of the present invention.
  • Figure 2 – is the rear partial perspective view of the laundry washing-drying machine related to an embodiment of the present invention.
  • Figure 3 – is the schematic view of the condenser, the air duct and the water spraying device related to another embodiment of the present invention.
  • the laundry washing-drying machine (1) comprises a body (2); a drum (3) that is disposed in the body (2) and wherein the laundry is placed; a circulation duct (4) wherein the circulation of the process air that is passed over the laundry and provides drying of the laundry is realized; a condenser (5) that is disposed on the circulation duct (4) and that provides the condensation of the process air; at least one drying duct (6) that is disposed in the condenser (5) and through which the process air passes, and at least one water spraying device (7) that is connected to the water line and that provides the spraying of water into the drying duct (6).
  • the moisture-laden air coming from the laundry enters the drying duct (6) and is dehumidified by the condenser (5).
  • the dried air passes through the circulation duct (4) and is delivered back to the drum (3).
  • the water spraying device (7) is activated at certain intervals so that the water is delivered to the drying duct (6) and the condenser (5) is cooled down.
  • the laundry washing-drying machine (1) of the present invention comprises at least one fan (8) that is disposed on the condenser (5) and that generates an air flow perpendicular to the flow direction of the process air in the drying duct (6) so as to prevent the cooling water from being dragged out of the drying duct (6).
  • the fan (8) enables a secondary air flow to be generated in the drying duct (6) so as to be perpendicular to the flow direction of the process air.
  • the fan (8) is operated immediately before the water spraying device (7) is activated and enables, during the cooling process, a force to be exerted on the droplets of the cooling water carried by the process air out of the drying duct (6) in perpendicular to the flow direction of the process air.
  • the water droplets are pushed by means of the secondary air flow generated in the drying duct (6) toward the wall of the condenser (5) and hit on the wall of the condenser (5) and trickle down by gravity from the drying duct (6).
  • the flow rate of the secondary air flow can be kept at a much lower rate than the flow rate of the process air.
  • the cooling water is prevented from being carried out of the drying duct (6) in a simple and efficient manner without changing the flow profile of the process air.
  • the fan (8) is disposed on the upper part of the condenser (5) so as to be close to the outlet of the drying duct (6).
  • the process air moving along the drying duct (6) encounters the secondary air flow immediately before leaving the drying duct (6).
  • the secondary air flow creates an air curtain in front of the outlet of the drying duct (6) where the amount of water carried by the process air in the drying duct (6) is minimal.
  • the cooling water droplets dragged up to the outlet of the drying duct (6) are pushed toward the wall of the condenser (5), accumulate on the wall of the condenser (5) and trickle down.
  • the condenser (5) is provided with an air duct (11) wherein the fan (8) is disposed and that has at least one inlet opening (9) and at least one outlet opening (10) that open to the drying duct (6) so as to allow the air taken from the drying duct (6) by means of the fan (8) to be passed through the air duct (11) and then transferred back to the drying duct (6).
  • the fan (8) is disposed in the air duct (11) so as to be in front of the inlet opening (9).
  • Some of the process air carrying the cooling water is drawn by means of the fan (9) through the inlet opening (9) into the air duct (11), circulated in the air duct (11), and then delivered from the outlet opening (10) back to the drying duct (6).
  • the cooling water droplets are drawn into the air duct (11) and the efficiency of the air curtain created in the drying duct (6) is increased.
  • the inlet opening (9) opens to the upper part of the drying duct (6) so as to be close to the outlet of the drying duct (6) and the outlet opening (10) opens almost to the mid-section of the drying duct (6).
  • the air delivered from the outlet opening (10) into the drying duct (6) does not affect the flow of the moisture-laden air coming from over the laundry and entering into the drying duct (6).
  • the air duct (11) is U-shaped.
  • the cooling water droplets in the process air taken from the inlet opening (9) into the air duct (11) hit the wall of the air duct (11), accumulate in the air duct (11), trickle down by gravity over the upright wall of the air duct (11) and return through the outlet opening (10) to the drying duct (6).
  • the cooling water is prevented from remaining in the air duct (11) at the end of the drying process.
  • the water spraying device (7) sprays water between the inlet opening (9) and the outlet opening (10).
  • the air curtain created by the air duct (11) is prevented from affecting the flow of the water sprayed from the water spraying device (7).
  • the fan (8) is an axial fan.
  • the cooling water carried by the process air is enabled to be efficiently moved away from the outlet of the drying duct (6) and is prevented from reaching the circulation duct (4) and humidifying the laundry.
  • a laundry washing-drying machine (1) is realized wherein the drying process is performed faster and more efficiently and the energy consumption is reduced.

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

Abstract

The present invention relates to a laundry washing-drying machine (1) comprising a body (2); a drum (3) that is disposed in the body (2) and wherein the laundry is placed; a circulation duct (4) wherein the circulation of the process air that is passed over the laundry and provides drying of the laundry is realized; a condenser (5) that is disposed on the circulation duct (4) and that provides the condensation of the process air; at least one drying duct (6) that is disposed in the condenser (5) and through which the process air passes, and at least one water spraying device (7) that is connected to the water line and that provides the spraying of water into the drying duct (6).

Description

A LAUNDRY WASHING-DRYING MACHINE COMPRISING A WATER-COOLED CONDENSER
The present invention relates to a laundry washing-drying machine comprising a water-cooled condenser.
In state of the art laundry washing-drying machines comprising a condenser, the air heated by means of a heater is delivered on the laundry in the drum and then the moisture-laden air is passed through a heat exchanger where the water therein is condensed. The dried air is then heated again and delivered on the laundry and the cycle is repeated. In this type of washers/dryers, generally condenser systems without an aeration line are used, and the condenser is cooled with water by means of a water spraying device. The cooling water is delivered generally perpendicularly to the air flow direction into the condenser and trickles down by gravity. However, in cases wherein the water spraying device is positioned close to the fan due to space constraints or the drying air is cycled at a high flow rate, the cooling water may be dragged along by the drying air so as to reach the laundry, causing the drying performance to decrease.
In the state of the art Chinese Patent Document No. CN202116896, a condenser wherein the cooling water is prevented from being dragged along with the air by means of centrifugal force generated in the condenser is disclosed.
In the state of the art European Patent Document No. EP2883487, a condenser wherein the cooling water is prevented from being dragged out of the condenser is disclosed.
The aim of the present invention is the realization of a laundry washing-drying machine the drying performance of that is improved.
The laundry washing-drying machine realized in order to attain the aim of the present invention, explicated in the claims, comprises a drum wherein the drying process is performed; a circulation duct wherein the process air, that provides the drying of the laundry in the drum, is circulated; a condenser that is disposed on the circulation duct and that dehumidifies the process air; at least one drying duct that is disposed in the condenser and wherein the process air passes, and a water spraying device that is connected to the water line, that extends into the condenser and that enables the condenser to be cooled by spraying water into the air duct.
The laundry washing-drying machine of the present invention comprises at least one fan that is disposed on the condenser and that generates an air flow perpendicularly to the flow of the process air in the drying duct. By means of the fan, an air curtain is formed in the drying duct and the air curtain exerts a thrust force on the droplets of the cooling water perpendicularly to the flow direction of the process air so as to prevent the droplets of the cooling water from being dragged out of the condenser. Thus, the cooling water is prevented from being delivered to the laundry and the drying performance of the laundry washing-drying machine is improved.
In an embodiment of the present invention, the fan is positioned on the condenser in close proximity to the outlet of the drying duct from which the process air leaves the drying duct. Thus, the droplets carried up to the outlet of the drying duct are enabled to be separated from the process air.
In an embodiment of the present invention, the condenser is provided with an air duct wherein the fan is disposed, that has at least one inlet opening through which the air drawn from the drying duct by means of the fan enters and at least one outlet opening that enables the air received from the inlet opening to be delivered back to the drying duct. Thus, the process air carrying the droplets of the cooling water is enabled to be circulated in the drying duct and the efficiency of the air curtain is improved.
In another embodiment of the present invention, the inlet opening is disposed on the upper part of the condenser so as to provide that the dehumidified process air is taken into the air duct immediately before leaving the drying duct, and the outlet opening is disposed in the mid-section of the condenser so as to provide that the air circulating in the air duct is delivered almost to the mid-section of the drying duct. Thus, the air delivered from the outlet opening back into the condenser is prevented from affecting the air flow profile at the inlet of the drying duct.
In another embodiment of the present invention, the air duct has at least one upright wall whereon the process air passing therethrough contacts. Thus, the water droplets carried with the air taken into the air duct are enabled to hit the upright wall so as to accumulate thereon and to trickle down by gravity.
In another embodiment of the present invention, the water spraying device is disposed on the condenser so as to remain between the inlet opening and the outlet opening. Thus, the air flow generated by the fan is prevented from affecting the flow of the cooling water.
By means of the present invention, the cooling water is prevented from being dragged along by the process air out of the drying duct and reaching the circulating duct. Thus, the performance of the heater in the laundry washing-drying machine is prevented from decreasing and the drying performance is improved.
The laundry washing-drying machine realized in order to attain the aim of the present invention is illustrated in the attached figures, where:
Figure 1 – is the schematic view of the laundry washing-drying machine related to an embodiment of the present invention.
Figure 2 – is the rear partial perspective view of the laundry washing-drying machine related to an embodiment of the present invention.
Figure 3 – is the schematic view of the condenser, the air duct and the water spraying device related to another embodiment of the present invention.
The elements illustrated in the figures are numbered as follows:
  1. A laundry washing-drying machine
  2. Body
  3. Drum
  4. Circulation duct
  5. Condenser
  6. Drying duct
  7. Water spraying device
  8. Fan
  9. Inlet opening
  10. Outlet opening
  11. Air duct
The laundry washing-drying machine (1) comprises a body (2); a drum (3) that is disposed in the body (2) and wherein the laundry is placed; a circulation duct (4) wherein the circulation of the process air that is passed over the laundry and provides drying of the laundry is realized; a condenser (5) that is disposed on the circulation duct (4) and that provides the condensation of the process air; at least one drying duct (6) that is disposed in the condenser (5) and through which the process air passes, and at least one water spraying device (7) that is connected to the water line and that provides the spraying of water into the drying duct (6). The moisture-laden air coming from the laundry enters the drying duct (6) and is dehumidified by the condenser (5). The dried air passes through the circulation duct (4) and is delivered back to the drum (3). During the drying process, the water spraying device (7) is activated at certain intervals so that the water is delivered to the drying duct (6) and the condenser (5) is cooled down.
The laundry washing-drying machine (1) of the present invention comprises at least one fan (8) that is disposed on the condenser (5) and that generates an air flow perpendicular to the flow direction of the process air in the drying duct (6) so as to prevent the cooling water from being dragged out of the drying duct (6). The fan (8) enables a secondary air flow to be generated in the drying duct (6) so as to be perpendicular to the flow direction of the process air. The fan (8) is operated immediately before the water spraying device (7) is activated and enables, during the cooling process, a force to be exerted on the droplets of the cooling water carried by the process air out of the drying duct (6) in perpendicular to the flow direction of the process air. Thus, the water droplets are pushed by means of the secondary air flow generated in the drying duct (6) toward the wall of the condenser (5) and hit on the wall of the condenser (5) and trickle down by gravity from the drying duct (6). The flow rate of the secondary air flow can be kept at a much lower rate than the flow rate of the process air. Thus, the cooling water is prevented from being carried out of the drying duct (6) in a simple and efficient manner without changing the flow profile of the process air.
In an embodiment of the present invention, the fan (8) is disposed on the upper part of the condenser (5) so as to be close to the outlet of the drying duct (6). The process air moving along the drying duct (6) encounters the secondary air flow immediately before leaving the drying duct (6). The secondary air flow creates an air curtain in front of the outlet of the drying duct (6) where the amount of water carried by the process air in the drying duct (6) is minimal. Thus, the cooling water droplets dragged up to the outlet of the drying duct (6) are pushed toward the wall of the condenser (5), accumulate on the wall of the condenser (5) and trickle down.
In another embodiment of the present invention, the condenser (5) is provided with an air duct (11) wherein the fan (8) is disposed and that has at least one inlet opening (9) and at least one outlet opening (10) that open to the drying duct (6) so as to allow the air taken from the drying duct (6) by means of the fan (8) to be passed through the air duct (11) and then transferred back to the drying duct (6). The fan (8) is disposed in the air duct (11) so as to be in front of the inlet opening (9). Some of the process air carrying the cooling water is drawn by means of the fan (9) through the inlet opening (9) into the air duct (11), circulated in the air duct (11), and then delivered from the outlet opening (10) back to the drying duct (6). Thus, the cooling water droplets are drawn into the air duct (11) and the efficiency of the air curtain created in the drying duct (6) is increased.
In another embodiment of the present invention, the inlet opening (9) opens to the upper part of the drying duct (6) so as to be close to the outlet of the drying duct (6) and the outlet opening (10) opens almost to the mid-section of the drying duct (6). Thus, the air delivered from the outlet opening (10) into the drying duct (6) does not affect the flow of the moisture-laden air coming from over the laundry and entering into the drying duct (6).
In another embodiment of the present invention, the air duct (11) is U-shaped. The cooling water droplets in the process air taken from the inlet opening (9) into the air duct (11) hit the wall of the air duct (11), accumulate in the air duct (11), trickle down by gravity over the upright wall of the air duct (11) and return through the outlet opening (10) to the drying duct (6). Thus, the cooling water is prevented from remaining in the air duct (11) at the end of the drying process.
In another embodiment of the present invention, the water spraying device (7) sprays water between the inlet opening (9) and the outlet opening (10). Thus, the air curtain created by the air duct (11) is prevented from affecting the flow of the water sprayed from the water spraying device (7).
In another embodiment of the present invention, the fan (8) is an axial fan.
By means of the present invention, the cooling water carried by the process air is enabled to be efficiently moved away from the outlet of the drying duct (6) and is prevented from reaching the circulation duct (4) and humidifying the laundry. Thus, a laundry washing-drying machine (1) is realized wherein the drying process is performed faster and more efficiently and the energy consumption is reduced.

Claims (7)

  1. A laundry washing-drying machine (1) comprising a body (2); a drum (3) that is disposed in the body (2) and wherein the laundry is placed; a circulation duct (4) wherein the circulation of the process air that is passed over the laundry and provides drying of the laundry is realized; a condenser (5) that is disposed on the circulation duct (4) and that provides the condensation of the process air; at least one drying duct (6) that is disposed in the condenser (5) and through which the process air passes, and at least one water spraying device (7) that is connected to the water line and that provides the spraying of water into the drying duct (6), characterized by at least one fan (8) that is disposed on the condenser (5) and that generates an air flow perpendicular to the flow direction of the process air in the drying duct (6) so as to prevent the cooling water from being dragged out of the drying duct (6).
  2. A laundry washing-drying machine (1) as in Claim 1, characterized by the fan (8) that is disposed on the upper part of the condenser so as to be close to the outlet of the drying duct (6).
  3. A laundry washing-drying machine (1) as in Claim 1, characterized by an air duct (11) that is disposed on the condenser (5), wherein the fan (8) is disposed and that has at least one inlet opening (9) and at least one outlet opening (10) that open to the drying duct (6) so as to allow the air taken from the drying duct (6) by means of the fan (8) to be passed through the air duct (11) and then transferred back to the drying duct (6).
  4. A laundry washing-drying machine (1) as in Claim 3, characterized by the inlet opening (9) that opens to the upper part of the drying duct (6) so as to be close to the outlet of the drying duct (6) and by the outlet opening (10) that opens almost to the mid-section of the drying duct (6).
  5. A laundry washing-drying machine (1) as in Claim 3 or Claim 4, characterized by the U-shaped air duct (11).
  6. A laundry washing-drying machine (1) as in Claim 2, characterized by the water spraying device (7) that sprays water between the inlet opening (9) and the outlet opening (10).
  7. A laundry washing-drying machine (1) as in any one of the above claims, characterized by the fan (8) that is an axial fan.
PCT/EP2017/061040 2016-05-10 2017-05-09 A laundry washing-drying machine comprising a water-cooled condenser WO2017194531A1 (en)

Applications Claiming Priority (2)

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TRA2016/06164 2016-05-10
TR201606164 2016-05-10

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020015513A1 (en) * 2018-07-19 2020-01-23 青岛海尔滚筒洗衣机有限公司 Condenser for washer dryer combo and control method of washer dryer combo

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3017089A1 (en) * 1980-05-03 1981-11-05 Miele & Cie GmbH & Co, 4830 Gütersloh WASHING TREATMENT MACHINE SET UP FOR WASHING, SPIN, AND DRYING
EP1612318A2 (en) * 2004-07-02 2006-01-04 Samsung Electronics Co., Ltd. Moisture condensing unit
CN202116896U (en) 2011-03-31 2012-01-18 无锡小天鹅股份有限公司 Drying and condensing device of washing and drying integrating machine
WO2013088316A2 (en) * 2011-12-13 2013-06-20 BSH Bosch und Siemens Hausgeräte GmbH Method for operating a washer dryer with a sensor placed between a tub and a heat exchanger, and related washer dryer
EP2883487A1 (en) 2013-12-13 2015-06-17 BSH Hausgeräte GmbH Drying machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3017089A1 (en) * 1980-05-03 1981-11-05 Miele & Cie GmbH & Co, 4830 Gütersloh WASHING TREATMENT MACHINE SET UP FOR WASHING, SPIN, AND DRYING
EP1612318A2 (en) * 2004-07-02 2006-01-04 Samsung Electronics Co., Ltd. Moisture condensing unit
CN202116896U (en) 2011-03-31 2012-01-18 无锡小天鹅股份有限公司 Drying and condensing device of washing and drying integrating machine
WO2013088316A2 (en) * 2011-12-13 2013-06-20 BSH Bosch und Siemens Hausgeräte GmbH Method for operating a washer dryer with a sensor placed between a tub and a heat exchanger, and related washer dryer
EP2883487A1 (en) 2013-12-13 2015-06-17 BSH Hausgeräte GmbH Drying machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020015513A1 (en) * 2018-07-19 2020-01-23 青岛海尔滚筒洗衣机有限公司 Condenser for washer dryer combo and control method of washer dryer combo

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