EP3632286A1 - Waschmaschine, ein wasserenthärtungssystem umfassend - Google Patents

Waschmaschine, ein wasserenthärtungssystem umfassend Download PDF

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Publication number
EP3632286A1
EP3632286A1 EP19200702.9A EP19200702A EP3632286A1 EP 3632286 A1 EP3632286 A1 EP 3632286A1 EP 19200702 A EP19200702 A EP 19200702A EP 3632286 A1 EP3632286 A1 EP 3632286A1
Authority
EP
European Patent Office
Prior art keywords
salt tank
unit
washing device
water
salt
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.)
Granted
Application number
EP19200702.9A
Other languages
English (en)
French (fr)
Other versions
EP3632286B1 (de
Inventor
Aykut SEVER
Rustem Asik
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.)
Vestel Beyaz Esya Sanayi ve Ticaret AS
Original Assignee
Vestel Beyaz Esya Sanayi ve Ticaret AS
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 Vestel Beyaz Esya Sanayi ve Ticaret AS filed Critical Vestel Beyaz Esya Sanayi ve Ticaret AS
Publication of EP3632286A1 publication Critical patent/EP3632286A1/de
Application granted granted Critical
Publication of EP3632286B1 publication Critical patent/EP3632286B1/de
Active legal-status Critical Current
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4229—Water softening arrangements
    • A47L15/4231—Constructional details of the salt container or the ion exchanger
    • 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 
    • D06F39/007—Arrangements of water softeners
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4229—Water softening arrangements
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2401/00—Automatic detection in controlling methods of washing or rinsing machines for crockery or tableware, e.g. information provided by sensors entered into controlling devices
    • A47L2401/34—Other automatic detections
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/18—Water softening devices
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
    • A47L2501/26—Indication or alarm to the controlling device or to the user
    • 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
    • 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
    • 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
    • D06F2105/58—Indications or alarms to the control system or to the user
    • 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 
    • D06F33/47—Responding to irregular working conditions, e.g. malfunctioning of pumps 

Definitions

  • the present invention relates to a washing device comprising a water softening system.
  • Current washing machines and similar washing devices comprise a body; a washing compartment located in the body and in which washing, rinsing, drying and such processes are carried out; a door which is opened and closed to allow access into the washing compartment; a water feeding line for feeding water from a source, which may be a mains supply, into the washing compartment in order for use in said washing and rinsing processes; and a detergent drawer in which cleaning materials such as a solid or liquid detergent, fabric softener etc. are stored and, if needed, fed from the drawer into the washing compartment for use in washing and rinsing processes.
  • water softening capacity of the ion exchanger decreases over time depending on the hardness value of the mains water, amount of water passing through the ion exchanger, and capacity of the ion exchanger.
  • the ion exchanger reaches to a saturation point by the hardness elements that it draws thereon such that it is not able to perform function of water softening, it should be cleansed by regenerative materials (e.g. sodium chloride, NaCl) in order to re-perform the function of water softening.
  • Said regenerative materials are generally located inside a chamber and should be re-filled when they are fully consumed; and since access into the chamber is cumbersome and complex for the user in present applications, they cause difficulty of use.
  • the washing device comprises at least one body; at least one washing compartment located in the body and in which washing, rinsing, drying and such processes are carried out; at least a water feeding line for feeding water from a source which may be a mains supply; at least one ion exchanger for filtering items that are present in the mains water coming from the water feeding line and cause hardness, such as undissolved Calcium, Magnesium, and Manganese, to reduce hardness of the water;
  • the washing device of the invention enables that the salt tank is able to move out of the body of the washing device by means of the movement mechanism thereof, and the salt tank can be taken out of the washing device by means of the connection units thereof; therefore, salt loading and cleaning processes can be performed easily by the users.
  • An object of the present invention is to provide a washing device comprising a water softening system.
  • Another object of the present invention is to provide a washing device comprising a water softening system and having a salt tank which is attachable to and detachable from the washing device by the user in an easy manner.
  • Yet a further object of the present invention is to provide a washing device which comprises a water softening system and with which the user can load salt into the washing device in an easy and fast manner.
  • a washing device comprising a water softening system and having a salt tank which is attachable to and detachable from the washing device by the user in an easy manner and enables salt to be loaded in an easy and fast manner.
  • the washing device comprises at least one body (1); at least one washing compartment (not illustrated in figures) located in the body (1) and in which washing, rinsing, drying and such processes are carried out; at least one control unit (5) which enables a user to control the washing device and may, for example, be a control button; at least one warning unit (6) for giving an audible or visual warning to the user by the washing machine; at least one processing unit which is connected with the control unit (5) and the warning unit (6); at least one water feeding line (not shown in the figures) for feeding water from a source which may be a mains supply; and at least one ion exchanger (21) for filtering items that are present in the mains water coming from the water feeding line and cause hardness, such as undissolved Calcium, Magnesium, and Manganese, to reduce hardness of the water.
  • a control unit (5) which enables a user to control the washing device and may, for example, be a control button
  • at least one warning unit (6) for giving an audible or visual
  • the washing device further comprises:
  • opening of the second lid (11) by user provides access into the inner chamber (7) through the loading opening and enables regenerative material (salt) to be loaded.
  • regenerative material salt
  • the washing device comprises at least one door (3) which is opened and closed to allow access into the washing compartment, and located on a front surface (2) of the body; and at least one detergent drawer (4) in which liquid or solid cleaning materials are stored, and fed therefrom to the washing compartment if needed.
  • the movement mechanism (H) comprises at least one gear (15) (e.g. a rack and pinion gear) located on the fixed member (12) or the movable member (9), and at least one damper (17) contacting the gear (15) so as to enable salt tank (10) to be brought into the forward position in a slow and controlled way.
  • the damper (17) is, preferably, a wheel which is in contact with the gear (15), wherein the wheel is positioned inside a liquid fluid having a high viscosity value and is able to provide dampening effect accordingly.
  • the washing device comprises at least a first lid (8) which is located on a front surface (2) thereof and enables access to the body opening, and thus to the salt tank (10).
  • the first lid (8) is required to be opened in order to enable access to the salt tank (10).
  • the first lid (8) is preferably made of the same material with that of front surface (2) of the washing device, and the opening and units therein are prevented from being seen.
  • At least a third sealing unit (18) is located to provide sealing between the second lid (11) and the salt tank (10); and sealing between the salt tank (10) and the connection unit (13) is provided by means of at least a first sealing unit (19) located at the water inlet opening (10a), and by means of at least a second sealing unit (20) located at the water outlet opening (10b). Therefore, the salt tank (10) is allowed to have an air-tight and liquid-tight structure.
  • At least one locking unit (not shown in the figures) is provided between the connection unit (13) and the salt tank (10), which allows salt tank (10) to be connected to the connection unit (13) or to be released by rotating the salt tank (10) around an axis.
  • the first lid (8) is opened to reach the salt tank (10), and the salt tank (10) and the second lid (11) become visible.
  • a pushing force in the direction of clip (14) is applied to the salt tank (10) or the second lid (11) in order to eliminate mechanical locking between the clip (14) and the tab (141).
  • the movable member (9) Upon releasing the locking of the clip (14), the movable member (9), by the force generated by pushing unit (16), slides on the fixed member (12) so that it moves outwardly from the front surface (2).
  • the salt tank (10) which is brought into the forward position and extends outwardly from the front surface (2) is rotated, the locking unit is released and connection of salt tank (10) to the connection unit (13) is interrupted.
  • the salt tank (10) is taken out of the washing machine by user, and operations as salt filling or cleaning can be carried out easily.
  • the salt tank (10) After cleaning and/or salt filling operations, the salt tank (10) is rotated again at the same axis and the locking unit is brought into the locked position, and mechanical lock is provided with the connection unit (13) which is provided on the movable member (9).
  • a pushing force is applied by the user to the salt tank (10) until clip (14) and tab (141) are locked, so that the salt tank (10) is placed inside washing device again.
  • the washing device comprises at least a third sensor (90) which is located on the movement mechanism (H), controls whether locking unit is brought into locked position or not (whether the salt tank (10) and the connection unit (13) are locked to each other or not), the third sensor (90) being preferably connected with the processing unit, and sending a first signal to the processing unit when the locking unit is brought into the locked position such that the processing unit does not initiate the regeneration process before the locking unit is brought into the locked position, and that the processing unit gives an error message via the warning unit (6).
  • a third sensor (90) which is located on the movement mechanism (H), controls whether locking unit is brought into locked position or not (whether the salt tank (10) and the connection unit (13) are locked to each other or not)
  • the third sensor (90) being preferably connected with the processing unit, and sending a first signal to the processing unit when the locking unit is brought into the locked position such that the processing unit does not initiate the regeneration process before the locking unit is brought into the locked position, and that the processing unit gives an error message via the warning unit (6).
  • the contact unit (100) which is located on the salt tank (10) such that when the locking unit is brought into the locked position, the contact unit (100) contacts the third sensor (90) and by this way allows the third sensor (90) to send the first message to the processing unit.
  • the third sensor (90) may be a simple switching element, it may also be a light sensor, an ultrasonic sensor, an infrared sensor, an optical magnetic sensor or a pressure sensor.
  • the third sensor (90) is actuated by the contact unit (100).
  • the locking unit is brought into the locked position by rotation of the salt tank (10) about 180°, and in said embodiment, at least two symmetrical contact units (100) are provided on the salt tank (10).
  • the water inlet opening (10a) and the water outlet opening (10b) are coaxial.
  • outer diameter of the water inlet opening (10a) is smaller than outer diameter of the water outlet opening (10b) and is located at a middle part of the water outlet opening (10b).
  • water from the water inlet line (13a) is directly delivered to the channel (10c) through the water inlet opening (10a) and passed through the holes located on the channel (10c), and the solution formed at the inner chamber (7) exits through the water outlet opening (10b) with the effect of pressure of water.
  • a distance in the direction of the mutual axis is provided between the water inlet opening (10a) and the water outlet opening (10b), the distance being required to carry out transfer process to the connection unit (13).
  • the ion exchanger (21) is positioned in the body (1) such that it is located at a side wall of the body (1) and above the salt tank (10) (with respect to a base on which the washing device is placed). Transfer of the solution formed in the salt tank (10) into the ion exchanger (21) is performed directly with pressure of the mains, without using any pressure increase system (pump). Hydraulic connections made by the water inlet line (13a) and the water outlet line (13b) are realized by means of flexible hoses (not shown in the figures). Therefore, the salt tank (10) and the connection unit (13) are allowed to have a structure that can move outwardly from the body (1) via the movement mechanism (H).
  • the washing device comprises at least a first sensor (22) which is located on the water outlet line (13b), enables a salt level of the solution leaving the salt tank (10) to be measured, and is connected with the processing unit.
  • the measurement performed by the first sensor (22) is carried out by measuring conductivity of the solution passing through the water outlet line (13b), depending on the fact that the conductivity value of the salt water is different from that of the water.
  • a conductivity difference between a positive magnetic pole (22a) and a negative magnetic pole (22b) comprised by the first sensor (22) is read to detect saltiness level of the solution.
  • the processing unit provides the user with a warning by means of the warning unit (6).
  • the first sensor (22) is on the water outlet line (13b)
  • the positive magnetic pole (22a) and the negative magnetic pole (22b) are movable that is why they are provided on the moving structure with flexible cables.
  • the first sensor (22) may be positioned at the inner chamber (7) inside the salt tank (10), and may directly contact the solution so as to detect amount of salt at the inner chamber (7) with a conductivity or weight measurement. Since the salt tank (10) can fully be separated from the washing device, the positive magnetic pole (22a) and the negative magnetic pole (22b) is located at a surface of the salt tank (10) that contacts the connection unit (13).
  • the channel (10c) is divided into a plurality of rods (10f) parallel to each other, and by this way, it is enabled that the water is distributed at the inner chamber (7) in a more efficient manner, and the salt at the salt tank (10) is dissolved in a more efficient manner.
  • the washing device comprises at least one actuator (171) which is located on the movable member (9) and controls the movement mechanism (H) so as to allow salt tank (10) to move automatically between the forward and backward positions.
  • the actuator (171) may be an electric motor while it may also be a mechanism operating with a hydraulic pneumatic system.
  • the actuator (171) when a command is issued by user via control unit (5) regarding said operation, or when a forward pushing motion is applied to the salt tank (10), the actuator (171) enables movable member (9) to move in the forward direction and the salt tank (10) to be brought into the forward direction.
  • the actuator (171) may enable salt tank (10) to be brought automatically into the forward position.
  • the actuator (171) may be enabled that the salt tank (10) is brought into the backward position again by the actuator (171) according to the information received from the first sensor (22).
  • the actuator (171) is controlled by the processing unit.
  • At least one pin (23) is provided on the movable member (9), which enables movement of the movable member (9) to be stopped and fixed at this position when the salt tank (10) is brought into the forward position.
  • the pin (23) located on the movable member (9) forms a blockage between the movable member (9) and the front surface (2) so as to prevent movable member (9) from moving.
  • the pin (23) may be a clamp pin, a spring mechanism or a part acting as a lock.
  • amount of salt in the salt tank (10) can be measured by at least a second sensor (24) located on the fixed part (12). While the second sensor (24) may be a sensor capable of measuring weight, it may also be a sensor capable of measuring tension, extension or deformation.
  • the solution is prevented from flowing outwards through the water inlet opening (10a).
  • the check valve (25) is preferably made of a flexible plastic part, and consists of a single piece.
  • the check valve (25) allows one-way water passage (such that it allows water entry to the salt tank (10)). Due to the flexible material of which it is made, end part of the check valve (25) closes and becomes a sealed structure when a water pressure applies on it, thus allowing one-way water passage.
  • the end part of the check valve (25) is positioned at water entry direction of the salt tank (10).
  • the salt tank (10) comprises at least a fourth sealing unit (26) which prevents water from flowing to the outer environment through the water outlet opening (10b) when the salt tank (10) is taken out of the washing device, and at least one elastic unit (27) which blocks water passage and prevents salt water from flowing to outer environment by pushing the channel (10c) forward and contacting the fourth sealing unit (26) after salt tank (10) is separated from the connection unit (13).
  • the salt tank (10) acts as a bearing for the channel (10c); and the channel (10c) is able to move back and forth in the salt tank (10) at a distance of, for example, 2-5 mm.
  • the fourth sealing unit (26) and the elastic unit (27) are located between the salt tank (10) and the channel (10c) and restrict movement of the channel (10c).
  • the elastic unit (27) is crushed so that the contact between channel (10c) and the fourth sealing unit (26) is removed, thus allowing water passage.
  • elastic unit (27) may be a spring, it may also be made of a shape memory material or a material that deforms due to tension to be applied.
  • the fourth sealing unit (26) may be made of rubber or soft materials which are flexible and have a high deformability rate, as well as materials exhibiting water tightness property.
  • the salt tank (10) comprises at least a third lid (10d) which allows access to the inner chamber (7) by being brought into an opened or a closed position, and at least a fifth sealing unit (10e) which is located on the third lid (10d) and enables water tank (10) to be air-tight when the third lid (10d) is at the closed position.
  • the third lid (10d) is provided at a part of the salt tank (10) that is outside the body (1) and a surface of the salt tank (10) which is located at an upper part thereof with regard to a base on which the washing device is provided.
  • the third lid (10d) salt loading to the salt tank (10) is enabled to be performed without taking the salt tank (10) out of the washing device.
  • At least one concrete weight unit (28) which is located in the body (1) of washing device and helps dynamic balancing of the washing device, wherein a safety distance (D) is provided between the concrete weight unit (28), the salt tank (10) and the movement mechanism (H) in order to protect salt tank (10) and movement mechanism (H) against mechanical damages and breaks which may occur as a result of vibrations of the washing device.
  • the safety distance (D) is preferably 20 mm or more.
  • At least one protective unit (29) which is positioned in the body (1) of the washing device such that it is on the movement mechanism (H) and between the concrete weight unit (28) and the movement mechanism (H), and at least one impact dampening unit (30) on the protective unit (29).
  • the impact dampening unit (30) and the protective unit (29) provided at an upper part of the salt tank (10) and the movement mechanism (H) protect the movement mechanism (H) and the salt tank (10) against mechanical damages and breaks which may occur as a result of vibrations and oscillations of the washing device.
  • the protective unit (29) is connected to the body (1) and made of a metal material.
  • the impact dampening unit (30) provided thereon may be made of a sponge or rubber material, while it may be made of dedicated impact dampening foam materials.
  • the impact dampening unit (30) is capable of dampening an impact against a possible impact of the concrete weight unit (28) and prevents noise and voice occurrence in case of a possible contact.
  • the washing device comprises at least one discharge line (not shown in the figures) for discharging the cleaning liquid, at least one discharge pump (not shown in the figures), and at least one drainage cover (31) through which access to the discharge line is enabled, wherein the movement mechanism (H), the salt tank (10), the loading opening and the connection unit (13) are located, with respect to a middle axis (A) of the washing device, in the symmetry of the portion where the discharge line, the discharge pump and the drainage cover (31) are provided.
  • the first lid (8) located on the loading opening is positioned at a left side of the washing device with respect to the middle axis (A), and in symmetry of the drainage cover (31).
  • the movement mechanism (H), the salt tank (10) and the connection unit (13) are located at a lower part of the ion exchanger (21) and the washing compartment (at a part that is closer to a base of the washing device).
  • the washing device of the invention enables that the salt tank (10) is able to move out of the body (1) of the washing device by means of the movement mechanism (H) thereof, and the salt tank (10) can be taken out of the washing device by means of the connection units thereof; therefore, salt loading and cleaning processes can be performed easily by the users.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
EP19200702.9A 2018-10-02 2019-10-01 Waschmaschine, ein wasserenthärtungssystem umfassend Active EP3632286B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TR201814341 2018-10-02

Publications (2)

Publication Number Publication Date
EP3632286A1 true EP3632286A1 (de) 2020-04-08
EP3632286B1 EP3632286B1 (de) 2021-06-30

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112746437A (zh) * 2020-12-28 2021-05-04 珠海格力电器股份有限公司 一种防染色的洗涤方法及装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0021276A1 (de) * 1979-06-21 1981-01-07 Bauknecht Hausgeräte GmbH Haushaltgerät, insbesondere Geschirrspülmaschine mit einem Wasserenthärter
DE3520202A1 (de) * 1985-06-05 1986-12-11 Aweco Apparate- und Gerätebau GmbH & Co KG, 7995 Neukirch Haushaltswaschmaschine mit wasserenthaerter
US6158486A (en) * 1998-11-19 2000-12-12 Ecolab Inc. Closed package liquid dispensing system
WO2002020893A1 (en) * 2000-09-04 2002-03-14 Arçelik A.S. A washing machine with a removable detergent cartridge
US20170088442A1 (en) * 2011-12-13 2017-03-30 Ecolab Usa Inc. Urea sulfate and sodium chloride blend for regeneration of cation exchange resins

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0021276A1 (de) * 1979-06-21 1981-01-07 Bauknecht Hausgeräte GmbH Haushaltgerät, insbesondere Geschirrspülmaschine mit einem Wasserenthärter
DE3520202A1 (de) * 1985-06-05 1986-12-11 Aweco Apparate- und Gerätebau GmbH & Co KG, 7995 Neukirch Haushaltswaschmaschine mit wasserenthaerter
US6158486A (en) * 1998-11-19 2000-12-12 Ecolab Inc. Closed package liquid dispensing system
WO2002020893A1 (en) * 2000-09-04 2002-03-14 Arçelik A.S. A washing machine with a removable detergent cartridge
US20170088442A1 (en) * 2011-12-13 2017-03-30 Ecolab Usa Inc. Urea sulfate and sodium chloride blend for regeneration of cation exchange resins

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112746437A (zh) * 2020-12-28 2021-05-04 珠海格力电器股份有限公司 一种防染色的洗涤方法及装置

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