EP2177659B1 - System and method for heating washing water for use in a textile laundry - Google Patents
System and method for heating washing water for use in a textile laundry Download PDFInfo
- Publication number
- EP2177659B1 EP2177659B1 EP09172993A EP09172993A EP2177659B1 EP 2177659 B1 EP2177659 B1 EP 2177659B1 EP 09172993 A EP09172993 A EP 09172993A EP 09172993 A EP09172993 A EP 09172993A EP 2177659 B1 EP2177659 B1 EP 2177659B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- washing water
- washing
- heating
- heat exchanger
- hollow shaft
- 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
Links
- 238000005406 washing Methods 0.000 title claims description 137
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 89
- 238000010438 heat treatment Methods 0.000 title claims description 67
- 239000004753 textile Substances 0.000 title claims description 29
- 238000000034 method Methods 0.000 title claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 239000000446 fuel Substances 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 3
- 230000008021 deposition Effects 0.000 description 4
- 239000000356 contaminant Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Images
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
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/04—Heating 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
- D06F31/00—Washing installations comprising an assembly of several washing machines or washing units, e.g. continuous flow assemblies
- D06F31/005—Washing installations comprising an assembly of several washing machines or washing units, e.g. continuous flow assemblies consisting of one or more rotating drums through which the laundry passes in a continuous flow
-
- 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
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/08—Liquid supply or discharge arrangements
- D06F39/083—Liquid discharge or recirculation 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
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/10—Temperature of washing liquids; Heating means therefor
-
- 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
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/22—Condition of the washing liquid, e.g. turbidity
- D06F34/24—Liquid temperature
Definitions
- the invention relates to a system for heating washing water for use in a textile laundry, comprising at least one washing chamber adapted to receive textile for washing, at least one first feed conduit for washing water connecting to the at least one washing chamber, at least one first discharge conduit for washing water connecting to the at least one washing chamber and at least one heat exchanger for heating the washing water to be used.
- the invention further relates to a method for heating washing water for use in a textile laundry, in particular by making use of the system according to the invention.
- Industrial textile cleaning is a service industry which responds to the need to be able to reuse textile in an attractive and hygienic manner.
- diverse types of textile usually formed by clothing, bedclothes and towels and so on, are here washed in a wet manner, wherein use is made of washing water which is provided with detergents and which is brought at increased temperature into intensive contact with the textile for cleaning.
- the alkaline washing water is here generally first heated by means of steam generated by a steam boiler, after which the washing water can actually be applied.
- the washing water is generally discharged after use. Discharge generally takes place via the sewage system or the surface water, usually after sand, textile fibres and other components have been separated by filtering from the waste water to be discharged.
- a significant drawback of the steam boiler is that the use of a steam boiler is unfavourable from an energy viewpoint.
- the steam boiler moreover produces a relatively large amount of noise during operation.
- the steam boiler also has the drawback that it develops an increased pressure during operation, whereby there is a permanent risk of rupture and/or exploding of the steam boiler.
- European patent application EP1849394 discloses a system for washing laundry, comprising a washing chamber adapted to receive textile for washing, wherein steam discharged by the washing chamber is led through a heat exchanger for heating washing water discharged by the washing chamber.
- NL - C2-1 028 933 discloses a heat exchanger with an axially rotatable, hollow shaft arranged in a reservoir.
- the invention has for its object to provide an improved system for heating washing water for use in a textile laundry.
- the invention provides for this purpose a system of the type formulated in claim 1.
- the washing water can be heated in a relatively safe and efficient manner without the use of a steam boiler being necessary here.
- a substantial energy-saving of up to about 40% can in this way be realized.
- the washing water is recirculated in the washing water circuit, wherein the washing water is heated in the heat exchanger, fed via the first feed conduit to the washing chamber and discharged via the discharge conduit to the heat exchanger, where the washing water to be used again is heated.
- the system comprises an electrical or fuel driven heating means for heating the heating medium for guiding through the hollow shaft of the heat exchanger. From an energy and economic viewpoint it is generally particularly advantageous to recirculate the heating medium in a heating circuit, wherein the heating means are connected to the hollow shaft of the heat exchanger via a second feed conduit and a second discharge conduit.
- the heating means can be of electrical nature, and comprise for instance one or more heating coils.
- the heating medium will however generally be heated by burning a fuel, such as for instance natural gas or fuel oil. Circulation of the heating medium in the heating circuit generally takes place by making use of a circulation pump. It would however also be possible to envisage no separate heating means being applied for the purpose of heating the heating medium; it is for instance also possible to envisage the hollow shaft being connected to a conduit already provided with relatively hot water.
- the system comprises a temperature sensor for detecting the temperature of the washing water for guiding into the washing chamber. By detecting the washing water temperature before it is guided into the washing chamber it is possible to monitor whether the washing water has a correct optimum temperature.
- the heat exchanger further comprises a temperature sensor for detecting the inlet temperature of the washing water, a temperature sensor for detecting the outlet temperature of the washing water, a temperature sensor for detecting the inlet temperature of the heating medium, and a temperature sensor for detecting the outlet temperature of the heating medium.
- the full process of heating the washing water can be tracked by arranging a temperature sensor at multiple critical locations in the system.
- the system can furthermore be regulated on the basis of the information collected by the temperature sensors, for instance by modifying the flow rate of the circulation pump of the washing water circuit, modifying the flow rate of the circulation pump of the heating circuit, modifying the power of the heating means and/or modifying the rotation speed of the hollow shaft.
- the hollow shaft of the heat exchanger is preferably coupled to drive means, in particular an electric motor, for axially rotating the hollow shaft. Control of the system according to the invention generally takes place by applying a control unit.
- the hollow shaft of the heat exchanger In order to increase the heat-exchanging surface area between the heating medium and the washing water for heating it is favourable for the hollow shaft of the heat exchanger to be provided with at least one hollow disc protruding relative to the hollow shaft.
- the hollow disc will be at least partially filled with the heating medium, whereby the surface area to volume ratio of the hollow shaft can be increased.
- the hollow shaft of the heat exchanger is provided with a plurality of hollow discs mutually connected in series and protruding relative to the hollow shaft.
- the hollow discs will generally be arranged substantially transversely of the shaft. It can however also be advantageous to have the hollow discs enclose an angle differing from 90° with the shaft, whereby turbulence, and therefore an improved mixing, can be realized in the reservoir.
- the washing water volume of the reservoir of the heat exchanger is preferably greater than the washing water volume of the washing chamber.
- the washing water volume of the reservoir is preferably at least 1.5 times greater than the washing water volume of the washing chamber.
- the washing water volume is understood to mean the volume of washing water which will be present during operation in respectively the reservoir and the washing chamber.
- the system will generally comprise a plurality of washing chambers connected in series, which together form a wash line, so that a complete washing process for washing textile can be performed as fully as possible.
- the textile will here generally be prewashed in a first washing chamber, after which the main wash will take place in a subsequent washing chamber. In a chamber following thereon the textile will generally be rinsed and then optionally treated with a neutralizing acid solution.
- the wash line here preferably forms a so-called continuous batch tunnel washer (CBW), wherein the textile is guided through the different washing chambers by means of an axially rotatable transport screw, in particular a worm (Archimedes) screw.
- CBW continuous batch tunnel washer
- An example of a continuous batch tunnel washer is described in the international patent application WO 03016608 .
- the system comprises at least one outlet for removing washing water from the system.
- the system will generally comprise a plurality of outlets, wherein the at least one washing chamber is provided with at least one outlet, and wherein the reservoir of the heat exchanger is provided with at least one outlet. In this way used, and generally contaminated, washing water can be removed relatively simply from the system.
- washing water for heating and the heating medium are guided in mutual counterflow through the heat exchanger.
- the circulation of the washing water in the washing water circuit preferably take place by applying a circulation pump.
- the pump is preferably coupled here to the first feed conduit for pumping washing water from the heat exchanger into the washing chamber.
- the invention also relates to a method for heating washing water for use in a textile laundry, in particular by making use of a system according to the invention, according to claim 8.
- the pump flow rate of the pump is regulated on the basis of the detected inlet temperatures and outlet temperatures.
- FIG. 1 shows a schematic view of an embodiment of a system 1 for heating wasting water.
- System 1 comprises a washing chamber 2 in which textile 3 for washing is received. Washing chamber 2 is coupled to a first feed conduit 4 and a first discharge conduit 5 for respective feed and discharge of washing water 6. Washing water 6 is heated in a reservoir 7 of a heat exchanger 8 coupled to first feed conduit 4 and first discharge conduit 5.
- An axially rotatable hollow shaft 9 provided with a plurality of hollow discs 10 is arranged in reservoir 7 for throughflow of a relatively hot liquid heating medium 11.
- a first circulation pump 12 connected to first feed conduit 4 pumps washing water 6 out of washing chamber 2 to reservoir 7.
- An additional pump (not shown) can optionally be used to pump washing water 6 out of the reservoir to washing chamber 2.
- washing chamber 2 is provided with a closable outlet 13 to enable optional removal of washing water 6 from system 1.
- reservoir 7 is also provided with a closable outlet 14 to enable removal of washing water 6 from system 1.
- Hollow shaft 9 connects to a second feed conduit 15 and to a second discharge conduit 16 for respective feed and discharge of heating medium 11.
- Second feed conduit 15 and second discharge conduit 16 connect to each other via a heating element 17.
- a second circulation pump 18 circulates heating medium 11 in the formed (second) circuit.
- the inlet temperature of heating medium 11 in the heat exchanger amounts to 90°C, and the outlet temperature of heating medium 11 in the heat exchanger to 70°C.
- Washing water 6 is guided into heat exchanger 8 at a temperature of 58°C and is heated two degrees in heat exchanger 8 to 60°C. This latter temperature is generally an ideal temperature for a main wash program during washing of textile 3. About three litres of washing water 6 will generally be employed here per kilogram of textile 3 for the purpose of washing the textile 3. When 50 kilograms of textile 3 have to be washed, about 150 litres of washing water 6 will therefore then be required.
- the washing water volume in reservoir 7 preferably amounts to at least 1.5 times the washing water volume in washing chamber 2 in order to enable buffering of sufficient heated washing water 6, whereby the washing water volume in reservoir 7 amounts to about 225 litres.
- the embodiment according to figure 1 does not form part of the invention.
- FIG. 2 is a schematic view of an embodiment of a system 19 according to the invention.
- System 19 comprises a plurality of washing chambers 20 which are connected in series and together form a wash line 21, in particular a continuous batch tunnel washer, which is adapted to clean textiles and similar goods.
- the washing chambers are designated with the Roman numerals I to VI.
- An axially rotatable, helical transport screw 22 is arranged in wash line 21 for displacement from the first washing chamber (1) 20 to the last washing chamber (VI) 20.
- the first two washing chambers (I and II) 20 here form prewash chambers
- the following two washing chambers (III and IV) 20 here form main wash chambers.
- the subsequent washing chamber (V) 20 forms a rinsing chamber and the final washing chamber (VI) 20 forms a neutralization chamber. It is noted that only one exemplary embodiment is shown here. Many variants to this modular structure of wash line 21 can be envisaged.
- the prewash chambers (I and II) 20 and the main wash chambers (III and IV) 20 are coupled to a first feed conduit 23 and a first discharge conduit 24 for respective feed and discharge of washing water 25. Washing water 25 is heated by applying a special heat exchanger 26 as also shown in figure 1 .
- Heat exchanger 26 comprises a reservoir 27 for washing water 25, and an axially rotating, profiled hollow shaft 28 arranged in reservoir 27 for passage of relatively hot mains water 29.
- the mains water 29 is pumped through hollow shaft 28 and through a heating element 31 using a circulation pump 30.
- First discharge conduit 24 is also provided with a circulation pump 32 for pumping washing water 25 out of washing chambers 20 to reservoir 27 of heat exchanger 26.
- First feed conduit 23 and first discharge conduit 24 are provided with temperature sensors 33 to enable detection of the inlet temperature and the outlet temperature of washing water 25.
- Temperature sensors 34 are also arranged in or close to heat exchanger 26 for the purpose of there detecting the current inlet temperatures and outlet temperatures of washing water 25 and the relatively hot mains water 29. Temperature sensors 33, 34 are coupled to a control unit (not shown) to enable regulating of system 19 on the basis of the detected temperatures.
- Regulation parameters here are for instance the flow rate of circulation pump 30, 32, the power of heating means 31, the rotation speed of hollow shaft 28 and the rotation speed of transport screw 22.
- textile can be cleaned in relatively safe, advantageous, and therefore efficient manner.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
- Control Of Washing Machine And Dryer (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL2002095A NL2002095C (nl) | 2008-10-14 | 2008-10-14 | Systeem en werkwijze voor het verwarmen van in een textielwasserij te gebruiken waswater. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2177659A1 EP2177659A1 (en) | 2010-04-21 |
EP2177659B1 true EP2177659B1 (en) | 2012-09-12 |
Family
ID=40829851
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09172993A Active EP2177659B1 (en) | 2008-10-14 | 2009-10-14 | System and method for heating washing water for use in a textile laundry |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2177659B1 (es) |
ES (1) | ES2394898T3 (es) |
NL (1) | NL2002095C (es) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CZ306443B6 (cs) * | 2015-03-13 | 2017-01-25 | Vladimír Kšenzuliak | Zařízení pro ohřev prací lázně ve velkokapacitních pracích strojích |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010029873A1 (de) * | 2010-06-09 | 2011-12-15 | BSH Bosch und Siemens Hausgeräte GmbH | Hausgerät, insbesondere Haushaltsreinigungsgerät |
NL2005282C2 (nl) * | 2010-08-27 | 2012-02-28 | Christeyns N V | Werkwijze en inrichting voor het wassen van textiel. |
NL2006599C2 (nl) * | 2011-04-14 | 2012-10-16 | Christeyns N V | Systeem en werkwijze voor het voor het verwarmen van in een textielwasserij te gebruiken procesmedium. |
JP2024510120A (ja) | 2021-02-24 | 2024-03-06 | オームアイキュー,インコーポレイテッド | 動的流体加熱器および洗浄装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1455685A (fr) * | 1964-12-01 | 1966-10-14 | Flii Donini S A S Officine Ele | Dispositif de chauffage, en particulier pour machines à laver |
DE19644924A1 (de) * | 1996-10-29 | 1998-04-30 | Kaercher Gmbh & Co Alfred | Mobile Wäschereieinrichtung |
US20030110815A1 (en) | 2001-08-17 | 2003-06-19 | Russell Poy | Continuous tunnel batch washer apparatus |
DE102004023126A1 (de) * | 2004-05-11 | 2005-12-08 | Wartmann, Thomas, Dipl.-Ing. | Waschmaschine mit Wärmerückgewinnung |
NL1028933C2 (nl) * | 2005-05-02 | 2006-11-03 | Ems Rotor B V | Werkwijze en systeem voor het behandelen van in wasserijen gebruikt alkalisch waswater. |
DE102006020003A1 (de) * | 2006-04-26 | 2007-10-31 | Herbert Kannegiesser Gmbh | Verfahren zur Rückgewinnung der von Wäschereimaschinen abgegebenen Wärmeenergie |
-
2008
- 2008-10-14 NL NL2002095A patent/NL2002095C/nl active
-
2009
- 2009-10-14 ES ES09172993T patent/ES2394898T3/es active Active
- 2009-10-14 EP EP09172993A patent/EP2177659B1/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CZ306443B6 (cs) * | 2015-03-13 | 2017-01-25 | Vladimír Kšenzuliak | Zařízení pro ohřev prací lázně ve velkokapacitních pracích strojích |
Also Published As
Publication number | Publication date |
---|---|
ES2394898T3 (es) | 2013-02-06 |
EP2177659A1 (en) | 2010-04-21 |
NL2002095C (nl) | 2010-04-15 |
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