EP3088820A1 - Haushaltskühl- und/oder -gefriervorrichtung - Google Patents

Haushaltskühl- und/oder -gefriervorrichtung Download PDF

Info

Publication number
EP3088820A1
EP3088820A1 EP16000838.9A EP16000838A EP3088820A1 EP 3088820 A1 EP3088820 A1 EP 3088820A1 EP 16000838 A EP16000838 A EP 16000838A EP 3088820 A1 EP3088820 A1 EP 3088820A1
Authority
EP
European Patent Office
Prior art keywords
evaporator
wettability
cell
deep
rear wall
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.)
Withdrawn
Application number
EP16000838.9A
Other languages
English (en)
French (fr)
Inventor
Dejan Dren
Bojan KRALJ
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.)
Gorenje gospodinjski aparati dd
Original Assignee
Gorenje gospodinjski aparati dd
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 Gorenje gospodinjski aparati dd filed Critical Gorenje gospodinjski aparati dd
Publication of EP3088820A1 publication Critical patent/EP3088820A1/de
Withdrawn legal-status Critical Current

Links

Images

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
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/04—Preventing the formation of frost or condensate
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/12—Sound

Definitions

  • the present invention relates to a household apparatus, preferably a refrigerating and/or deep-freezing apparatus comprising at least one cell with at least one food storage compartment having a temperature below or above freezing point, wherein said compartment is refrigerated by means of at least one evaporator.
  • the technical problem to be solved by the present invention is how to conceive such refrigerating and/or deep-freezing apparatus that will eliminate or considerably reduce a crackling noise originating from an evaporator area and will at the same time also eliminate drawbacks concerning hygiene of this compartment.
  • Refrigerating and/or deep-freezing in a refrigerating/deep-freezing apparatus is provided for by a circulating refrigerating system that comprises a compressor as a source of systems operation, an evaporator extracting heat from the interior of the apparatus, and a condenser that releases heat into the environment.
  • a refrigerating agent that circulates within the refrigerating system receives and transmits heat owing to changes in pressure and temperature.
  • a compartment is refrigerated in phases. In a refrigerating phase when the system detects an increased temperature in the compartment, a refrigerating system turns on, warm air circulates (in a forced or natural manner) through an evaporator and discharges heat.
  • the system turns off and a standby phase occurs.
  • the temperature on the surface of the evaporator and in its vicinity lies below freezing point during the refrigerating phase.
  • the air passes through the evaporator and its close vicinity, the moisture from the air condenses and gets discharged onto all surfaces in the area of the evaporator. Since the temperature is below the freezing point, the condensed water vapour on the surface and in the area of the evaporator freezes in the form of frost and ice.
  • said frost or ice gets at least partially melted and the water is discharged through dedicated channels outside from a cell.
  • the temperature can be increased and melting of the ice achieved due to the system being turned off for a longer period of time and/or by using additional heating bodies in the evaporator area.
  • the evaporator is fixed in the compartment of the apparatus dedicated to food storage, refrigeration and/or deep-freezing, usually close to the rear wall of a housing and protected towards the interior of the storage compartment by a panel that simultaneously functions also as a deflector for the circulating air. There is a minimal gap between the evaporator and the rear wall/protective panel and this provides for a better air circulation through the evaporator.
  • the temperature on the surface of the evaporator and in its direct vicinity, i. e. on the part of the wall of the protective panel adjacent to the rear wall of the housing and the evaporator, is lower than the temperature within the cell. This is why condensed water vapour of the circulating air is also deposited on these surfaces.
  • the frost and ice get melted and get mostly discharged as water through discharge channels.
  • a certain quantity of water remains on an individual surface in the form of drops, the size and shape of which depends on the wettability of each surface.
  • the water drops freeze and at the same time become deep-freezing seed crystals for the condensed water vapour that is discharged from the air when the latter passes through the evaporator.
  • the frozen drops multiply and since there is a minimal distance between each surface and the evaporator, they hit against the surface of the evaporator and/or frozen condensed water vapour discharged on the surface of the evaporator. The drops push each other and the evaporator/its surfaces away.
  • a crackling noise also occurs as a consequence of various temperature dilatations of various materials of constructional elements during the operation of the refrigerating apparatus.
  • Shear strengths appear in a drop of frozen condensed water vapour that links two opposite surfaces as a consequence of various temperature dilatations of each material in the area. The moment the shear forces exceed the adhesion forces that act between the frozen condensed water vapour and each surface, the frozen condensed water vapour gets detached from each surface and consequently a crackling noise appears.
  • the strength of the noise is proportional to the size of the contact surface. Reduced wettability of surfaces means smaller contact surfaces of individual drops and in fact lower necessary shear forces for detachment. This results in a reduced noise.
  • the housing Since a housing of a refrigerating apparatus is normally produced in a sandwich structure with a high thermal and low sound insulating substance in-between, the housing functions as a sound amplifier that yet additionally amplifies the crackling noise which occurs on the internal surface of the wall of the housing.
  • the technical problem that is solved by the invention is characterized in that all internal surfaces of walls of a cell that are located in the area of an evaporator, that are adjacent to the evaporator and that distant from the evaporator for a minimal required distance are preferably part of the surface of the rear wall of the cell and of a surface of a protective panel adjacent to the evaporator and fabricated in a way that their wettability is reduced, preferably considerably reduced compared to the wettability of the remaining surfaces of the internal walls of the cell.
  • Reduced wettability of a surface and/or of a part of a surface in the area of the evaporator is achieved in any known way and is not the object of the invention.
  • Reduced wettability can be achieved by applying a coating of a material having a considerably reduced wettability or by physically treating a contact surface with known methods for reducing wettability.
  • a further advantage of the surfaces with reduced wettability in the area of the evaporator is their cleaning and thus the hygiene of the refrigerating apparatus.
  • the evaporator is fixed in an area of the apparatus close to the rear wall of the housing and is protected towards the interior of the storage compartment by a panel that prevents the user to access the evaporator and at the same time acts as a deflector of the circulating air and directs hot air from the cell to pass through the evaporator.
  • the fixed evaporator and the protective panel do not enable cleaning of the surfaces in the area of the evaporator, especially the surface of the rear wall of the housing behind the evaporator. This results in an accumulation of impurities on these surfaces which impacts the quality of food in the refrigerating compartment.
  • the water gets more intensely discharged from the surfaces in the area of the evaporator.
  • the water on said surfaces also takes impurities with it and discharges them out from the storage compartment of the apparatus.
  • the presence of impurities on said surfaces represents additional condensation and deep-freezing seed crystals, so the reduction thereof yet additionally contributes to a smaller quantity of frost and ice on said surfaces.
  • FIG. 1 shows a longitudinal view of a refrigerating apparatus with an evaporator.
  • the evaporator 4 is fixed in the cell 2 of the apparatus, preferably close at a rear wall 6 of the housing 1 and at a minimal distance from the rear wall 6.
  • the evaporator 4 is protected towards the interior of the cell 2 by a panel 7 that is arranged at a certain distance from the evaporator 4.
  • the protective panel 7 which prevents the user from accessing the evaporator 4 is at the same time also a deflector of the air that passes through the evaporator 4.
  • the rear wall 6 with its internal surface 9 facing the interior of the cell 2 is adjacent to the evaporator 4; the protective panel 7 with its surface 10 facing the rear wall 6 is adjacent to the evaporator 4.
  • a part of the internal surface 9 of the rear wall 6 of the housing 1 that is arranged in the area of the evaporator 4, that is adjacent to it, is processed to have a surface with reduced wettability, preferably a considerably reduced wettability compared to the wettability of the surface of the remaining internal surface 9 of the rear wall 6 and other internal surfaces of the cell 2.
  • the surface 10 of the protective panel 7 is processed to have reduced wettability, preferably a considerably reduced wettability compared to the wettability of the opposite surface of the protective panel 7.
  • Reduced wettability of the surface and/or of a part of the surface is achieved in any known way such as by applying a coating of a material having a considerably reduced wettability, by physically processing the contact surface with known methods for reducing wettability, by nanotechnology, wherein the materials must comply with food standard requirements.

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)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
EP16000838.9A 2015-04-28 2016-04-13 Haushaltskühl- und/oder -gefriervorrichtung Withdrawn EP3088820A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SI201500111A SI25001A (sl) 2015-04-28 2015-04-28 Gospodinjski hladilni in/ali zamrzovalni aparat

Publications (1)

Publication Number Publication Date
EP3088820A1 true EP3088820A1 (de) 2016-11-02

Family

ID=56101248

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16000838.9A Withdrawn EP3088820A1 (de) 2015-04-28 2016-04-13 Haushaltskühl- und/oder -gefriervorrichtung

Country Status (2)

Country Link
EP (1) EP3088820A1 (de)
SI (1) SI25001A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119468545A (zh) * 2024-12-16 2025-02-18 珠海格力电器股份有限公司 一种换热器组件、空调器和控制方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012220157A (ja) * 2011-04-13 2012-11-12 Shinichi Nakayama 霜付き防止シート及び同シートの施工方法
CN103776228A (zh) * 2014-01-27 2014-05-07 澳柯玛股份有限公司 一种防凝露与防结霜的制冷电器
DE202015000328U1 (de) * 2015-01-15 2015-02-06 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012220157A (ja) * 2011-04-13 2012-11-12 Shinichi Nakayama 霜付き防止シート及び同シートの施工方法
CN103776228A (zh) * 2014-01-27 2014-05-07 澳柯玛股份有限公司 一种防凝露与防结霜的制冷电器
DE202015000328U1 (de) * 2015-01-15 2015-02-06 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 201278, 12 November 2012 Derwent World Patents Index; AN 2012-Q06624, XP002761233 *
DATABASE WPI Week 201444, 7 May 2014 Derwent World Patents Index; AN 2014-M65491, XP002761234 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119468545A (zh) * 2024-12-16 2025-02-18 珠海格力电器股份有限公司 一种换热器组件、空调器和控制方法

Also Published As

Publication number Publication date
SI25001A (sl) 2016-11-30

Similar Documents

Publication Publication Date Title
KR101696860B1 (ko) 제빙기를 포함하는 냉장고 및 이의 제상수 포집 방법
US3365908A (en) Display case
MX2020006419A (es) Maquina para hacer hielo de enfriamiento directo.
EP2724097B1 (de) Kühlvorrichtung mit schutz vor der vereisung von nahrungsmitteln im fach für frische lebensmittel
US2370267A (en) Refrigerating apparatus
US3638449A (en) Refrigeration apparatus
CN102007351A (zh) 包括位于分隔壁内的蒸发器的冷却器-冷冻器组合装置
US3310957A (en) Keeping insulation dry
EP3088820A1 (de) Haushaltskühl- und/oder -gefriervorrichtung
EP2789939A1 (de) Kühlschrank
JP6270375B2 (ja) 冷蔵庫
KR20180006570A (ko) 증발기 유닛 및 이를 구비한 냉장고
US10267553B2 (en) Household refrigerator with an icemaker unit and a cooling device having a pressure chamber for cooling the icemaker unit
KR100886168B1 (ko) 저장고 제어방법
WO2015165512A1 (en) Refrigeration appliance having an anti-condensation arrangement
US3081608A (en) Frozen food compartment for domestic refrigerator
JP2014095530A (ja) 冷蔵庫
JP7209145B2 (ja) 冷蔵庫
JP2013120047A (ja) 冷蔵庫
JP2007078264A (ja) 冷凍冷蔵庫
JP2012063026A (ja) 冷蔵庫
US2746270A (en) Defrosting arrangements for refrigerating systems
KR20090133015A (ko) 냉장고의 제상장치
CN108700362B (zh) 具有辐射供热装置的制冷器具
US12480697B2 (en) Ice maker appliance control methods

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

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 MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20170503