EP4234794A1 - Waschmaschine mit internem warmwasserspeicher und verfahren zu ihrem betrieb - Google Patents

Waschmaschine mit internem warmwasserspeicher und verfahren zu ihrem betrieb Download PDF

Info

Publication number
EP4234794A1
EP4234794A1 EP23153229.2A EP23153229A EP4234794A1 EP 4234794 A1 EP4234794 A1 EP 4234794A1 EP 23153229 A EP23153229 A EP 23153229A EP 4234794 A1 EP4234794 A1 EP 4234794A1
Authority
EP
European Patent Office
Prior art keywords
compartment
water
washing machine
detergent
tub
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.)
Pending
Application number
EP23153229.2A
Other languages
English (en)
French (fr)
Inventor
Juan Carlos Mur Mur
Francisco Gabriel Rodríguez Suescun
Alberto Romeo Carnicero
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP4234794A1 publication Critical patent/EP4234794A1/de
Pending legal-status Critical Current

Links

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 
    • D06F39/02—Devices for adding soap or other washing agents
    • 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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/44—Control of the operating time, e.g. reduction of overall operating time
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/16—Washing liquid temperature
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/18—Washing liquid level
    • 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
    • D06F2105/02—Water supply
    • 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
    • D06F2105/02—Water supply
    • D06F2105/04—Water supply from separate hot and cold water inlets
    • 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
    • D06F2105/42—Detergent or additive supply
    • 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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/46—Control of the energy or water consumption
    • 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

Definitions

  • the invention relates to a washing machine with an internal hot water reservoir and a process for its operation.
  • the invention relates more particularly to a washing machine with a tub in which a drum is rotatable arranged, comprising a tap water supply and an aqueous liquid container for providing an aqueous detergent solution into the tub, and a process for the operation of this washing machine.
  • bithermic washing machines are known. Such washing machines are especially useful when their users have a solar thermal system, a hybrid boiler or a heat pump for the production of domestic hot water. By taking advantage of hot water produced with renewable sources and thus at very low energy cost, it is possible to reduce the consumption of washing machines.
  • Such washing machines have a double water connection so as to allow intelligent management of energy resources. Namely, in addition to presenting a connection for cold water which must then be heated by the electrical resistance of the appliance itself, a bithermic washing machine has an additional connection capable of withdrawing the already hot water produced at low cost.
  • the publication KR 20130017219A relates to a supply water control device of a drum washing machine and a method to supply heated water to a detergent case, thereby easily dissolving detergent.
  • a heater is mounted on a supply water case. Water is heated by the heater.
  • a temperature sensor detects water temperature in the supply water case.
  • a valve supplies the water to a detergent case.
  • washing machine in which a more efficient use can be made of a detergent that should be used in the washing process.
  • the washing machine should allow a more energy efficient operation.
  • the overall efficiency of the operation of the washing machine should be improved.
  • a further object was the provision of a process for operating this washing machine.
  • washing machine and the process for its operation pursuant to the independent claims.
  • Preferred embodiments of the washing machine according to the invention are indicated especially in the dependent claims.
  • Preferred embodiments of the process correspond to preferred embodiments of the washing machine and vice versa, even if not expressly stated herein.
  • the invention is thus directed to a washing machine with a tub in which a drum is rotatable arranged, comprising a tap water supply and an aqueous liquid container for providing an aqueous detergent solution into the tub, wherein the aqueous liquid container contains a first compartment and a second compartment, wherein the first compartment contains an electrical resistance heater and no supply device for detergent and wherein the second compartment does not contain a heating device, but a supply device for detergent, wherein the first compartment and the second compartment are separated by a wall, and wherein a siphon is provided in the first compartment and the second compartment such that it allows to automatically deliver water from the first compartment into the second compartment when the water level h in the first compartment is equal or higher than a preset water level height h max .
  • a preferred embodiment of the washing machine contains a load determination system for determining the load of the drum with laundry items to be washed.
  • the load determination system is a motor load determination system (MLD).
  • a total amount of water in the first compartment at the water level height h max is in the range of from 0.5 to 1.5 liter.
  • a first compartment valve is provided at a first water entrance to the first compartment.
  • the first water entrance is in general connected to a water supply.
  • the water supply can be a cold water supply or a hot water supply.
  • the first compartment valve is adapted to provide hot water to the first compartment.
  • a temperature sensor is provided in the first compartment of the washing machine.
  • a washing machine of the invention contains preferably a control unit that is adapted to open a first compartment valve to a tub water supply until a preset amount of water is introduced into the first compartment.
  • the washing machine of the present invention contains a triple valve for providing the aqueous liquid container with cold and/or hot tap water.
  • the invention is moreover directed to a process for the operation of a washing machine with a tub in which a drum is rotatable arranged, comprising a tap water supply and an aqueous liquid container for providing an aqueous detergent solution into the tub, wherein the aqueous liquid container contains a first compartment and a second compartment, wherein the first compartment contains an electrical resistance heating and no supply device for detergent and wherein the second compartment does not contain a heating device, but a supply device for detergent, wherein the first compartment and the second compartment are separated by a wall, and wherein a siphon is provided in the first compartment and the second compartment such that it allows to automatically deliver water from the first compartment into the second compartment when the water level in the first compartment is equal to or higher than a preset water level height h max .
  • the process comprises the steps
  • the temperature T of the water in the first compartment is measured and the heating of the water in step (b) is effected until a preset temperature T set is reached.
  • an aqueous detergent solution having a temperature in the range of from 30 °C to 60 °C can be provided to the tub of the washing machine.
  • the process comprises in addition the step (d), (d) bringing the introduced warm water in the second compartment in contact with a detergent and cold water to form a warm aqueous detergent solution which is immediately thereafter transported to a tub of the washing machine.
  • a process is moreover preferred, wherein a load determination for determining a load with laundry items to be washed is conducted in a time interval ⁇ t LD that overlaps with the time interval ⁇ t abc that is used for carrying out the steps (a), (b) and (c). It is then preferred that a motor load detection MLD is carried out as a load determination and that steps (a) to (c) are performed during a time interval ⁇ t MLD used for the motor load detection MLD.
  • the time interval ⁇ t MLD is usually in the range of from 60 to 120 seconds, for example 80 seconds.
  • the heating of the water in the first compartment is effected by means of an electrical resistance heater.
  • an electrical resistance heater is used with a power in the range of from 1500 to 2500 watts, preferably 1700 to 1900 watts, for example 1800 watts.
  • the present invention provides several advantages. Advantages of the invention include an improvement of the utilization of detergent. In embodiments of the invention, this improvement is especially useful if a determination of the load with laundry items to be washed is conducted ahead of the performance of the washing process, especially if a motor load detection MLD is carried out ahead of the washing process.
  • the invention applies in this regard simple, cheap and quickly assembled means.
  • Another advantage is a faster economic return on the investment made for the purchase of a renewable plant that can be used in embodiments of the present invention where at least a part of the water is provided as already warm water to the first compartment. Those who have invested in the installation of a solar thermal system will be able to further exploit this technology.
  • a further advantage of the present invention is the simple and thus cheap realization of the transfer of the warm, detergent containing aqueous liquid into the tub.
  • the transport of the water from the first chamber to the second chamber can be achieved by a pressure difference between the first and the second chamber. No specific electronic pump and thus no electronic control is required.
  • the time used for a motor load detection is efficiently used to heat the water and provide a warm detergent solution. Thus, time is won for improving the efficiency of the used detergent before it comes into contact with clothes.
  • the invention allows to improve the properties of the detergent from the very first moment in a washing process. It is useful mainly for powder detergents since powder detergents especially need a heating action for activating the active part of the detergents (tensoactive or surfactant), although the present invention is compatible with all detergent types such as liquid detergents.
  • the energy efficiency of a washing machine according to the invention is improved because the detergent can be activated with a smaller amount of water and in a shorter time.
  • the detergent can enter the drum activated and mixed with water making easier the cleaning of the clothes.
  • FIG. 1 A non-limiting example for important parts of a washing machine of the present which make a technical contribution to the invention and in which the process of the present invention can be implemented are shown in Fig. 1 .
  • Fig. 1 thus shows an aqueous liquid container 1 which is used in an embodiment of the washing machine of the present invention in which the process of the present invention can be carried out.
  • the washing machine which is not shown here has a tub in which a drum is rotatable arranged and which comprises a tap water supply and the aqueous liquid container 1 for providing an aqueous detergent solution 12 into the tub which cannot be seen here.
  • the aqueous liquid container 1 contains a first compartment 2 and a second compartment 3 which are separated by a wall 4.
  • the first compartment 2 contains an electrical resistance heater 5 and the second compartment 3 contains a supply device for detergent which cannot be seen here.
  • a siphon 6 is provided in the first compartment 2 and the second compartment 3 such that it allows to automatically deliver water 11 from the first compartment 2 into the second compartment 3 when the water level h in the first compartment 2 is equal or higher than a preset water level height h max .
  • the total amount of water in the first compartment 2 at the water level height h max is in the range of from 0.5 to 1.5 liter.
  • a first compartment valve 13 is provided at a first water entrance 7 to the first compartment 2.
  • the first compartment valve 13 is adapted to provide hot water to the first compartment 2.
  • a temperature sensor 14 is also provided in the first compartment 2.
  • the washing machine of this embodiment contains a control unit that is adapted to open the first compartment valve 13 to a tub water supply until a preset amount of water is introduced into the first compartment 2.
  • the washing machine contains a triple valve for providing the aqueous liquid container 1 with cold and/or hot tap water.
  • a process for the operation of the washing machine comprising the steps
  • the temperature T of the water 11 in the first compartment 2 is measured and the heating of the water 11 in step (b) is effected until a preset temperature T set is reached.
  • an electrical resistance heater is used with a power of 1800 watts.
  • 1 l of water in the first compartment 2 is heated to 60 °C and the heated water is then transferred to the second compartment 3 where an additional amount of 4.5 I water with a temperature of 21.5 °C is added.
  • the 1 liter of water is automatically delivered to the first compartment when the washing program is started thanks to the "theory of communicating vessels".
  • the washing machine demands water, hot water from the first compartment enters the washing machine through a siphon.
  • the additional amount of water 15 is introduced in the form of dropping water which comes from separate valves which are two in the case of cold water variants and three in the case of hot & cold water variants.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Control Of Washing Machine And Dryer (AREA)
EP23153229.2A 2022-02-25 2023-01-25 Waschmaschine mit internem warmwasserspeicher und verfahren zu ihrem betrieb Pending EP4234794A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22382164 2022-02-25

Publications (1)

Publication Number Publication Date
EP4234794A1 true EP4234794A1 (de) 2023-08-30

Family

ID=80461338

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23153229.2A Pending EP4234794A1 (de) 2022-02-25 2023-01-25 Waschmaschine mit internem warmwasserspeicher und verfahren zu ihrem betrieb

Country Status (1)

Country Link
EP (1) EP4234794A1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE527197A (de) * 1954-03-12 1954-03-31
KR20060128397A (ko) * 2005-06-10 2006-12-14 주식회사 대우일렉트로닉스 드럼세탁기의 세제 자동 투입장치
KR20130017219A (ko) 2011-08-10 2013-02-20 주식회사 대우일렉트로닉스 드럼 세탁기의 급수 제어 장치 및 방법
US20170191207A1 (en) * 2016-01-04 2017-07-06 John McCLOY Washing Machine Fill Reservoir

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE527197A (de) * 1954-03-12 1954-03-31
KR20060128397A (ko) * 2005-06-10 2006-12-14 주식회사 대우일렉트로닉스 드럼세탁기의 세제 자동 투입장치
KR20130017219A (ko) 2011-08-10 2013-02-20 주식회사 대우일렉트로닉스 드럼 세탁기의 급수 제어 장치 및 방법
US20170191207A1 (en) * 2016-01-04 2017-07-06 John McCLOY Washing Machine Fill Reservoir

Similar Documents

Publication Publication Date Title
EP2034081B1 (de) Verfahren zum Reinigen eines Dampfgenerators
CN100451478C (zh) 一种公共浴池余热回收热泵洗澡机
CN101790341A (zh) 洗碗机
CN105986393A (zh) 一种滚筒洗衣机及其开门控制方法
CN201136991Y (zh) 洗衣机
PL2096203T3 (pl) Pralka do gospodarstwa domowego z pompą cieplną
CN105506920B (zh) 滚筒洗衣机及其熨衣方法
US20120073608A1 (en) Dishwasher comprising a heat exchanger and corresponding control method
EP3036364A1 (de) Haushaltsgerät mit spülwasserbehälter
WO2008007889B1 (en) Laundry machine and controlling method thereof
CN104775266A (zh) 一种热泵洗干一体机及控制方法
CN101839468B (zh) 可去除钙质水垢的蒸汽站
EP4234794A1 (de) Waschmaschine mit internem warmwasserspeicher und verfahren zu ihrem betrieb
CN107034631B (zh) 一种洗衣机及其控制方法
CN202166203U (zh) 电辅助直接或间接式强制或自然循环太阳能热水机
CN104819557B (zh) 家用热水系统
JP3632651B2 (ja) 給湯装置
CN104928881A (zh) 一种洗衣机及其控制方法
CN101701411A (zh) 洗涤水的温度控制方法
JP5200578B2 (ja) 給湯装置
KR101867521B1 (ko) 순간식 보일러의 절수 장치
JP2010190466A (ja) 給湯装置
CN109682066A (zh) 余热回收利用系统及其控制方法
JP2013181709A (ja) 給湯装置
CN201948805U (zh) 饮水机

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20240229

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR