EP4343244A1 - Procédé de nettoyage d'un système de tuyauterie d'un appareil de refroidissement et/ou de congélation - Google Patents

Procédé de nettoyage d'un système de tuyauterie d'un appareil de refroidissement et/ou de congélation Download PDF

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Publication number
EP4343244A1
EP4343244A1 EP23195623.6A EP23195623A EP4343244A1 EP 4343244 A1 EP4343244 A1 EP 4343244A1 EP 23195623 A EP23195623 A EP 23195623A EP 4343244 A1 EP4343244 A1 EP 4343244A1
Authority
EP
European Patent Office
Prior art keywords
cleaning agent
outlet
piping system
cleaning
introduction
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
EP23195623.6A
Other languages
German (de)
English (en)
Inventor
Lukas Muigg
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.)
Liebherr Hausgeraete Lienz GmbH
Original Assignee
Liebherr Hausgeraete Lienz 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
Priority claimed from DE102022128131.0A external-priority patent/DE102022128131A1/de
Application filed by Liebherr Hausgeraete Lienz GmbH filed Critical Liebherr Hausgeraete Lienz GmbH
Publication of EP4343244A1 publication Critical patent/EP4343244A1/fr
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/12—Arrangements of compartments additional to cooling compartments; Combinations of refrigerators with other equipment, e.g. stove
    • F25D23/126—Water cooler
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/22—Cleaning means for refrigerating devices

Definitions

  • pipeline systems for transporting fluids such as water are subjected to cleaning at regular intervals.
  • Cleaning processes for such piping systems in household appliances are known, with the introduction and discharge of the cleaning agent, in particular in the form of a cleaning liquid, into the piping system taking place in a time- and/or volume-controlled manner.
  • the cleaning liquid is introduced into the pipeline system until a water tank from which the cleaning liquid comes is empty.
  • the cleaning liquid is sometimes also left in the for a predetermined time Piping system initiated.
  • This predetermined time usually includes a safety factor to ensure that the entire, usually not completely characterizable, volume of the pipeline system is filled with the cleaning liquid.
  • the present invention is based on the object of providing an improved method for cleaning a pipeline system, in particular a refrigerator and/or freezer.
  • the cleaning agent can be liquid, solid, such as a tab, gel-like, etc.
  • the cleaning agent comprises an indicator, preferably colored, and that the introduction and/or discharge is terminated based on the color of the fluid flowing from the outlet.
  • a substance added to a cleaning agent ensures the success of a cleaning process of a piping system, which includes the steps of introducing the cleaning agent into the piping system, uniformly distributing the cleaning agent in the piping system and discharging the cleaning agent from the piping system , can be determined. It is preferably provided that the introduction and discharge take place until a user can perceive a change in color of the fluid flowing from the pipe system.
  • a liquid cleaning agent which comprises drinking water, a cleaning solution and at least one further substance, such as preferably an indicator.
  • the cleaning agent can also be or include a reactant.
  • the additional substance can be powdery, solid or liquid.
  • a user can use a cleaning agent with an indicator to see whether there is still corresponding cleaning agent in the pipe system after a rinsing process and therefore a further rinsing process needs to be carried out or whether - visible by changing the color of the emerging liquid during the rinsing process - a cleaning success or complete rinsing of the cleaning agent has taken place.
  • the cleaning agent is produced before introduction, preferably by introducing a cleaning substance and/or an indicator into water.
  • the cleaning agent remains in the pipeline system between introduction and discharge, preferably for a specific reaction time.
  • the detection of the indicator which preferably adjusts its color according to the concentration of H 3 O + ions in the cleaning agent, can be carried out using a sensor.
  • the sensor's functionality can be based on Lambert-Beer's law.
  • the sensor can preferably detect light with a wavelength of 300 nm to 800 nm, in particular 300 nm to 400 nm.
  • the cleaning agent changes color between introduction and discharge, the color change preferably taking place in relation to the concentration of H 3 O + ions in the cleaning agent.
  • the piping system is preferably a water system.
  • the piping system may include a water dispenser, such as a water dispenser.
  • the cleaning agent can be a neutral cleaning agent.
  • a cleaning agent is preferably neutral if the, preferably average, concentration of H 3 O + ions in the cleaning agent corresponds to the, preferably average, concentration of OH - ions.
  • the, preferably average, concentration of the H 3 O + ions can also be greater or smaller than the, preferably average, concentration of the OH - ions.
  • a neutral cleaning agent preferably includes an indicator that does not adapt its color to environmental conditions, for example.
  • the cleaning agent may also include an indicator that adapts its color, preferably to environmental conditions.
  • An environmental condition may be a concentration of H 3 O + ions.
  • the indicator may be or comprise an acid-base indicator and/or a complexing agent reaction indicator.
  • the invention also relates to a refrigerator and/or freezer with a piping system which is designed to be cleaned using a method according to the invention.
  • the pipeline system has an inlet and an outlet, with a sensor being arranged at the outlet which is designed to determine the intensity of a radiation which has irradiated a fluid flowing out of the outlet.
  • the invention further relates to a cleaning agent with an indicator which is designed to be used in a method according to the invention.
  • step S1 a case distinction is made as to whether the cleaning agent should be introduced into the pipeline system or discharged from the pipeline system. Expelling the cleaning agent from the piping system can be referred to as flushing.
  • step S2 The rinsing takes place in step S2 in which a, preferably colorless, fluid, for example water, is introduced into the pipe system in order to remove the cleaning agent from the pipe system.
  • a, preferably colorless, fluid for example water
  • Rinsing S2 continues until no more color can be seen at the outlet or until no more cleaning agent flows out of the outlet.
  • the color of the fluid flowing from the outlet is recognized via the query in step S3. This can be done by a user or by a sensor.
  • the introduction of the cleaning agent can be referred to as flooding.
  • the color of the fluid flowing from the outlet is recognized via the query in step S6. This can be done by a user or by a sensor.
  • step S7 The introduction of the cleaning agent is ended in step S7. This ensures that the pipe system is completely filled with cleaning agent. The cleaning agent can now remain in the pipe system for a reaction time until the system is flushed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Cleaning In General (AREA)
EP23195623.6A 2022-09-20 2023-09-06 Procédé de nettoyage d'un système de tuyauterie d'un appareil de refroidissement et/ou de congélation Pending EP4343244A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022124023 2022-09-20
DE102022128131.0A DE102022128131A1 (de) 2022-09-20 2022-10-25 Verfahren zur Reinigung eines Rohrleitungssystems eines Kühl- und/oder Ge-friergeräts

Publications (1)

Publication Number Publication Date
EP4343244A1 true EP4343244A1 (fr) 2024-03-27

Family

ID=87934125

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23195623.6A Pending EP4343244A1 (fr) 2022-09-20 2023-09-06 Procédé de nettoyage d'un système de tuyauterie d'un appareil de refroidissement et/ou de congélation

Country Status (1)

Country Link
EP (1) EP4343244A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19938010A1 (de) * 1999-08-11 2001-02-15 Bsh Bosch Siemens Hausgeraete Verfahren zur Steuerung, Regelung und Dokumentation eines Reinigungsvorganges
DE102010003090A1 (de) * 2010-03-19 2011-09-22 BSH Bosch und Siemens Hausgeräte GmbH Verfahren und Vorrichtung zum Reinigen einer Wasserleitung
DE102011077367A1 (de) * 2011-06-10 2012-12-13 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät, Reinigungsvorrichtung und Verfahren zum Reinigen einer Wasserleitung des Kältegeräts mittels der Reinigungsvorrichtung
DE102012111826A1 (de) * 2011-12-05 2013-06-06 Helmut Esselmann Gmbh & Co. Kg Reinigungsvorrichtung für Fahrzeuge, insbesondere Schankfahrzeuge
EP2770280A2 (fr) * 2013-02-20 2014-08-27 LG Electronics, Inc. Réfrigérateur

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19938010A1 (de) * 1999-08-11 2001-02-15 Bsh Bosch Siemens Hausgeraete Verfahren zur Steuerung, Regelung und Dokumentation eines Reinigungsvorganges
DE102010003090A1 (de) * 2010-03-19 2011-09-22 BSH Bosch und Siemens Hausgeräte GmbH Verfahren und Vorrichtung zum Reinigen einer Wasserleitung
DE102011077367A1 (de) * 2011-06-10 2012-12-13 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät, Reinigungsvorrichtung und Verfahren zum Reinigen einer Wasserleitung des Kältegeräts mittels der Reinigungsvorrichtung
DE102012111826A1 (de) * 2011-12-05 2013-06-06 Helmut Esselmann Gmbh & Co. Kg Reinigungsvorrichtung für Fahrzeuge, insbesondere Schankfahrzeuge
EP2770280A2 (fr) * 2013-02-20 2014-08-27 LG Electronics, Inc. Réfrigérateur

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