Nothing Special   »   [go: up one dir, main page]

US20040135480A1 - Refrigerator with an inner case containing nanosilver particles - Google Patents

Refrigerator with an inner case containing nanosilver particles Download PDF

Info

Publication number
US20040135480A1
US20040135480A1 US10/618,241 US61824103A US2004135480A1 US 20040135480 A1 US20040135480 A1 US 20040135480A1 US 61824103 A US61824103 A US 61824103A US 2004135480 A1 US2004135480 A1 US 2004135480A1
Authority
US
United States
Prior art keywords
refrigerator
sheet
inner case
nanosilver particles
nanosilver
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.)
Abandoned
Application number
US10/618,241
Inventor
Jin Kim
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.)
WiniaDaewoo Co Ltd
Original Assignee
Daewoo Electronics Co Ltd
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=36128652&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=US20040135480(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Daewoo Electronics Co Ltd filed Critical Daewoo Electronics Co Ltd
Assigned to DAEWOO ELECTRONICS CORPORATION reassignment DAEWOO ELECTRONICS CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KIM, JIN SOO
Publication of US20040135480A1 publication Critical patent/US20040135480A1/en
Priority to US11/248,235 priority Critical patent/US20060029758A1/en
Abandoned 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
    • F25D23/00—General constructional features
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
    • A61L2/23—Solid substances, e.g. granules, powders, blocks, tablets
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
    • A61L2/23—Solid substances, e.g. granules, powders, blocks, tablets
    • A61L2/232—Solid substances, e.g. granules, powders, blocks, tablets layered or coated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/02—Materials undergoing a change of physical state when used
    • C09K5/04—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
    • C09K5/041—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems
    • 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
    • F25D23/06—Walls
    • 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
    • F25D23/06—Walls
    • F25D23/065—Details
    • F25D23/066—Liners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/30—Fillers, e.g. particles, powders, beads, flakes, spheres, chips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • B32B2307/7145—Rot proof, resistant to bacteria, mildew, mould, fungi
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
    • B32B37/153—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state at least one layer is extruded and immediately laminated while in semi-molten state
    • 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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/042—Air treating means within refrigerated spaces
    • 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/04—Treating air flowing to refrigeration compartments
    • F25D2317/041—Treating air flowing to refrigeration compartments by purification
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
    • Y10T428/1355—Elemental metal containing [e.g., substrate, foil, film, coating, etc.]
    • Y10T428/1359—Three or more layers [continuous layer]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/256—Heavy metal or aluminum or compound thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/31931—Polyene monomer-containing

Definitions

  • the present invention relates to a refrigerator with an inner case for defining an inner space of the refrigerator; and, more particularly, to a refrigerator including an inner case divided into two parts one of which contains nanosilver particles exhibiting optimal antibacterial and/or antifungal functions.
  • silver (Ag) is well-known as a common antibacterial agent.
  • colloidal silver is known as being safe and effective against, bacteria, fungi, microbes, virus and the like.
  • silver ions When silver ions are absorbed into cells of virus, bacteria, fungi and the like, the silver ions prevent the growth of enzyme required in respiration thereof to render them dead. Further, silver ions prevent metabolism of the bacteria and suppress reproduction thereof.
  • Fine particles of silver can be produced by a physical process such as electrolysis, liquid phase reduction, and grinding.
  • the electrolysis has mainly been used hitherto in order to obtain stabilized nanosilver particles with a high purity.
  • pure silver (99.99%) is immersed into distilled water; and extremely fine particulates of silver are obtained by applying a low current at a low temperature.
  • a refrigerator serves to preserve food in a fresh state for an extended period of time in a food storage compartment by cooling air in the compartment using a refrigeration cycle.
  • refrigerant gas compressed under a high temperature and a high pressure by a compressor is condensed into liquid phase in a condenser; and the liquid is then pressure-reduced through an expansion valve and evaporated in an evaporator.
  • the evaporating refrigerant takes heat from the ambient air to cool it.
  • the cooled air is then forced into the food storage compartment by, e.g., a fan.
  • the inner case of the refrigerator is typically made of acrylonitrile butadiene styrene(“ABS”) copolymer since the styrene base resin such as the ABS copolymer has an excellent mechanical property, workability, appearance, gloss and the like.
  • ABS acrylonitrile butadiene styrene
  • the inner case of the refrigerator is manufactured by the ABS copolymer to a sheet and then performing a vacuum forming process on it.
  • the vacuum forming process is one type of plastic forming process, the vacuum forming process including extruding a resin to a sheet, heating and softening the sheet in a vacuum forming machine to form a softened sheet, and drawing the softened sheet to a mold so as to form it into a shape required by using a vacuum of air or a vacuum and a compact of air to manufacture a desired product.
  • This vacuum forming process is widely used to produce the inner case of the refrigerator.
  • Such an inner case is mixed with nanosilver particles by adding nanosilver particles to the ABS solvent contained in the master batch. This permits nanosilver to be wastefully used since nanosilver particles are added even in forming a portion of the inner case in which antifungal function is not required. Accordingly, such production is cost ineffective.
  • a primary object of the present invention to provide a refrigerator including an inner case capable of having reduced amount of nanosilver particles to be contained therein.
  • a refrigerator including: an inner case having an inner sheet for defining an inner space of the refrigerator and an outer sheet formed on the inner sheet, the inner sheet containing nanosilver particles therein.
  • the inner sheet and the outer sheet are bonded to each other by a double extrusion molding technique.
  • the drawing is a schematic cross sectional view of an inner case of a refrigerator in accordance with the present invention.
  • the case includes an inner case 10 , an outer case 30 for forming an appearance of the refrigerator and a heat insulating material 20 provided therebetween.
  • the inner case 10 has an inner sheet 12 for defining an inner space of the refrigerator and an outer sheet 14 formed on the heat insulating material 20 .
  • the inner sheet 12 may come into contact with food, the user or the air contaminants and thus the antifungal function is required, while the outer sheet 14 does not. Accordingly, nanosilver particles having antifungal function are contained in the only inner sheet 12 while the outer sheet 14 is made of a typical acrylonitrile butadiene styrene(“ABS”) copolymer. This reduces amount of the nanosilver particles to be used in the inner case 10 . Accordingly, it is preferable that the thickness of the inner sheet 12 is minimized so as to further decrease amount of nanosilver to be contained therein.
  • the inner sheet 12 and the outer sheet 14 are bonded to each other by, e.g., a double extrusion molding technique.
  • the size of the nanosilver particles is limited to about 15 ⁇ 300 nm in consideration of the current manufacturing technique and the efficiency of specific surface area per unit weight.
  • the concentration of the nanosilver added to the inner sheet 12 is limited to a range of about 1 ⁇ 500 ppm by weight such that the expensive nanosilver can efficiently be used and a target antibacterial ability can be obtained.
  • the concentration of the nanosilver is increased, the antibacterial ability is enhanced; however, it is found that, in the range of 50 ⁇ 500 ppm by weight, there is no significant difference in the antibacterial ability.
  • the sterilization or bacteriostasis can be performed stably and efficiently.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Mechanical Engineering (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Refrigerator Housings (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)

Abstract

A refrigerator includes an inner case has an inner sheet for defining an inner space of the refrigerator and an outer sheet formed on the inner sheet, the inner sheet containing nanosilver particles therein. The inner sheet and the outer sheet are bonded to each other by a double extrusion molding technique and the nanosilver particles contained in the inner sheet have a size of about 15˜300 nm and a concentration of about 1˜500 ppm.

Description

    FIELD OF THE INVENTION
  • The present invention relates to a refrigerator with an inner case for defining an inner space of the refrigerator; and, more particularly, to a refrigerator including an inner case divided into two parts one of which contains nanosilver particles exhibiting optimal antibacterial and/or antifungal functions. [0001]
    • BACKGROUND OF THE INVENTION
  • In general, silver (Ag) is well-known as a common antibacterial agent. In particular, colloidal silver is known as being safe and effective against, bacteria, fungi, microbes, virus and the like. When silver ions are absorbed into cells of virus, bacteria, fungi and the like, the silver ions prevent the growth of enzyme required in respiration thereof to render them dead. Further, silver ions prevent metabolism of the bacteria and suppress reproduction thereof. [0002]
  • Fine particles of silver can be produced by a physical process such as electrolysis, liquid phase reduction, and grinding. The electrolysis has mainly been used hitherto in order to obtain stabilized nanosilver particles with a high purity. In the electrolysis process, pure silver (99.99%) is immersed into distilled water; and extremely fine particulates of silver are obtained by applying a low current at a low temperature. [0003]
  • Meanwhile, a refrigerator serves to preserve food in a fresh state for an extended period of time in a food storage compartment by cooling air in the compartment using a refrigeration cycle. In the refrigerator, refrigerant gas compressed under a high temperature and a high pressure by a compressor is condensed into liquid phase in a condenser; and the liquid is then pressure-reduced through an expansion valve and evaporated in an evaporator. At this time, the evaporating refrigerant takes heat from the ambient air to cool it. The cooled air is then forced into the food storage compartment by, e.g., a fan. [0004]
  • A study on employing the above-described nanosilver for an antibacterial purpose in the refrigerator has been conducted, in which the inner case of the refrigerator, which defines an inner space of the refrigerator, serves the antibacterial purpose by making it of nanosilver. [0005]
  • The inner case of the refrigerator is typically made of acrylonitrile butadiene styrene(“ABS”) copolymer since the styrene base resin such as the ABS copolymer has an excellent mechanical property, workability, appearance, gloss and the like. The inner case of the refrigerator is manufactured by the ABS copolymer to a sheet and then performing a vacuum forming process on it. [0006]
  • The vacuum forming process is one type of plastic forming process, the vacuum forming process including extruding a resin to a sheet, heating and softening the sheet in a vacuum forming machine to form a softened sheet, and drawing the softened sheet to a mold so as to form it into a shape required by using a vacuum of air or a vacuum and a compact of air to manufacture a desired product. This vacuum forming process is widely used to produce the inner case of the refrigerator. [0007]
  • Such an inner case is mixed with nanosilver particles by adding nanosilver particles to the ABS solvent contained in the master batch. This permits nanosilver to be wastefully used since nanosilver particles are added even in forming a portion of the inner case in which antifungal function is not required. Accordingly, such production is cost ineffective. [0008]
    • SUMMARY OF THE INVENTION
  • It is, therefore, a primary object of the present invention to provide a refrigerator including an inner case capable of having reduced amount of nanosilver particles to be contained therein. [0009]
  • In accordance with an aspect of the present invention, there is provided a refrigerator including: an inner case having an inner sheet for defining an inner space of the refrigerator and an outer sheet formed on the inner sheet, the inner sheet containing nanosilver particles therein. [0010]
  • Preferably, the inner sheet and the outer sheet are bonded to each other by a double extrusion molding technique.[0011]
    • BRIEF DESCRIPTION OF THE DRAWING
  • The above and other objects and features of the present invention will become apparent from the following description of preferred embodiments given in conjunction with the accompanying drawing in which: [0012]
  • The drawing is a schematic cross sectional view of an inner case of a refrigerator in accordance with the present invention.[0013]
    • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • A preferred embodiment of the present invention will now be described in detail with reference to a drawing showing a schematic cross sectional view of a case of a refrigerator in accordance with the present invention. [0014]
  • As shown, the case includes an [0015] inner case 10, an outer case 30 for forming an appearance of the refrigerator and a heat insulating material 20 provided therebetween.
  • The [0016] inner case 10 has an inner sheet 12 for defining an inner space of the refrigerator and an outer sheet 14 formed on the heat insulating material 20. The inner sheet 12 may come into contact with food, the user or the air contaminants and thus the antifungal function is required, while the outer sheet 14 does not. Accordingly, nanosilver particles having antifungal function are contained in the only inner sheet 12 while the outer sheet 14 is made of a typical acrylonitrile butadiene styrene(“ABS”) copolymer. This reduces amount of the nanosilver particles to be used in the inner case 10. Accordingly, it is preferable that the thickness of the inner sheet 12 is minimized so as to further decrease amount of nanosilver to be contained therein. The inner sheet 12 and the outer sheet 14 are bonded to each other by, e.g., a double extrusion molding technique.
  • In the preferred embodiment of the present invention, the size of the nanosilver particles is limited to about 15˜300 nm in consideration of the current manufacturing technique and the efficiency of specific surface area per unit weight. [0017]
  • Further, the concentration of the nanosilver added to the [0018] inner sheet 12 is limited to a range of about 1˜500 ppm by weight such that the expensive nanosilver can efficiently be used and a target antibacterial ability can be obtained. As the concentration of the nanosilver is increased, the antibacterial ability is enhanced; however, it is found that, in the range of 50˜500 ppm by weight, there is no significant difference in the antibacterial ability. In addition, in the above concentration range of nanosilver, the sterilization or bacteriostasis can be performed stably and efficiently.
  • With such an inner case of the refrigerator, it is possible to reduce the product cost of the refrigerator since amount of nanosilver particles to be contained in the inner case thereof is reduced. [0019]
  • While the invention has been shown and described with respect to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims. [0020]

Claims (3)

What is claimed is:
1. A refrigerator comprising:
an inner case including an inner sheet for defining an inner space of the refrigerator and an outer sheet formed on the inner sheet, the inner sheet containing nanosilver particles therein.
2. The refrigerator of claim 1, wherein the inner sheet and the outer sheet are bonded to each other by a double extrusion molding technique.
3. The refrigerator of claim 1, wherein the nanosilver particles have a size of about 15˜300 nm and a concentration of about 1˜500 ppm.
US10/618,241 2003-01-14 2003-07-10 Refrigerator with an inner case containing nanosilver particles Abandoned US20040135480A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US11/248,235 US20060029758A1 (en) 2003-01-14 2005-10-13 Refrigerator with an inner case containing nanosilver particles

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2003-002294 2003-01-14
KR1020030002294A KR20040065353A (en) 2003-01-14 2003-01-14 Anti-biotic refrigerator with nano silver

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US11/248,235 Continuation-In-Part US20060029758A1 (en) 2003-01-14 2005-10-13 Refrigerator with an inner case containing nanosilver particles

Publications (1)

Publication Number Publication Date
US20040135480A1 true US20040135480A1 (en) 2004-07-15

Family

ID=36128652

Family Applications (2)

Application Number Title Priority Date Filing Date
US10/618,241 Abandoned US20040135480A1 (en) 2003-01-14 2003-07-10 Refrigerator with an inner case containing nanosilver particles
US11/248,235 Abandoned US20060029758A1 (en) 2003-01-14 2005-10-13 Refrigerator with an inner case containing nanosilver particles

Family Applications After (1)

Application Number Title Priority Date Filing Date
US11/248,235 Abandoned US20060029758A1 (en) 2003-01-14 2005-10-13 Refrigerator with an inner case containing nanosilver particles

Country Status (7)

Country Link
US (2) US20040135480A1 (en)
EP (1) EP1439357B1 (en)
JP (1) JP2004219040A (en)
KR (1) KR20040065353A (en)
CN (1) CN1517651A (en)
DE (1) DE60313943T2 (en)
MX (1) MXPA03006278A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070159078A1 (en) * 2005-12-26 2007-07-12 Samsung Electronics Co., Ltd. Organic light emitting diode display with improved heat dissipation
US20110127227A1 (en) * 2008-05-19 2011-06-02 Schott Vtf (Societe Par Actions Simplifiee) Glass or glass-ceramic plate-shaped part, particularly a flat surface or shelf

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1892678B (en) * 2005-07-06 2011-03-30 宸鸿光电科技股份有限公司 Contact control panel with antibiotic layer and manufacture method
US8869918B2 (en) 2009-10-07 2014-10-28 Longyear Tm, Inc. Core drilling tools with external fluid pathways
US9528337B2 (en) 2009-10-07 2016-12-27 Longyear Tm, Inc. Up-hole bushing and core barrel head assembly comprising same
DE102012223535A1 (en) * 2012-12-18 2014-06-18 BSH Bosch und Siemens Hausgeräte GmbH Wall for a household refrigeration appliance with a high-gloss polystyrene and / or silver particles having top coat and household refrigeration appliance with such a wall
CN103438657A (en) * 2013-07-27 2013-12-11 海信容声(广东)冰箱有限公司 Refrigerator with intelligent sterilization control function

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5897673A (en) * 1995-12-29 1999-04-27 Japan Exlan Company Limited Fine metallic particles-containing fibers and method for producing the same
US20020182102A1 (en) * 2001-06-01 2002-12-05 Fontenot Monica Carlise Container, shelf and drawer liners providing absorbency and odor control
US6632855B1 (en) * 1998-03-17 2003-10-14 Lucite International Uk Limited Biocidal plastic material
US20040121077A1 (en) * 2002-12-23 2004-06-24 Chan-Jung Park Method of providing antibacterial activity on a surface of a body using nano-sized metal particles
US20050042247A1 (en) * 2002-02-25 2005-02-24 Bsh Bosch Und Siemens Hausgerate Gmbh Inner part for a refrigerating device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4938958A (en) * 1986-12-05 1990-07-03 Shinagawa Fuel Co., Ltd. Antibiotic zeolite
JP3214914B2 (en) * 1992-08-28 2001-10-02 株式会社日立製作所 refrigerator
JPH08210761A (en) * 1995-02-06 1996-08-20 Matsushita Refrig Co Ltd Refrigerator
AU4662100A (en) * 1999-04-23 2000-11-10 Agion Technologies, Llc Cooler chest with antimicrobial properties
DE10120802A1 (en) * 2001-04-27 2002-10-31 Basf Ag Process for the production of coated nanoparticles
DE20214601U1 (en) * 2002-02-25 2003-01-09 BSH Bosch und Siemens Hausgeräte GmbH, 81669 München Inner section for cooling unit, comprises chemically coated surface which is resistant to bacteria and/or fungus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5897673A (en) * 1995-12-29 1999-04-27 Japan Exlan Company Limited Fine metallic particles-containing fibers and method for producing the same
US6632855B1 (en) * 1998-03-17 2003-10-14 Lucite International Uk Limited Biocidal plastic material
US20020182102A1 (en) * 2001-06-01 2002-12-05 Fontenot Monica Carlise Container, shelf and drawer liners providing absorbency and odor control
US20050042247A1 (en) * 2002-02-25 2005-02-24 Bsh Bosch Und Siemens Hausgerate Gmbh Inner part for a refrigerating device
US20040121077A1 (en) * 2002-12-23 2004-06-24 Chan-Jung Park Method of providing antibacterial activity on a surface of a body using nano-sized metal particles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070159078A1 (en) * 2005-12-26 2007-07-12 Samsung Electronics Co., Ltd. Organic light emitting diode display with improved heat dissipation
US20110127227A1 (en) * 2008-05-19 2011-06-02 Schott Vtf (Societe Par Actions Simplifiee) Glass or glass-ceramic plate-shaped part, particularly a flat surface or shelf

Also Published As

Publication number Publication date
JP2004219040A (en) 2004-08-05
MXPA03006278A (en) 2005-09-08
EP1439357A3 (en) 2005-04-13
KR20040065353A (en) 2004-07-22
DE60313943T2 (en) 2008-01-17
EP1439357A2 (en) 2004-07-21
DE60313943D1 (en) 2007-07-05
US20060029758A1 (en) 2006-02-09
CN1517651A (en) 2004-08-04
EP1439357B1 (en) 2007-05-23

Similar Documents

Publication Publication Date Title
US20040135480A1 (en) Refrigerator with an inner case containing nanosilver particles
CN1104608C (en) Refrigerator and temperature control method thereof
CN108368963A (en) Vacuum heat insulator, the manufacturing method with its heat insulation device and vacuum heat insulator
MX341749B (en) Refrigeration circuit.
US20040137213A1 (en) Refrigerator with a finish material containing nanosilver particles
EP1310751A2 (en) Domestic refrigerator with improved thermal insulation
US20040239004A1 (en) Method for producing an injection-molded material with an antibacterial function
JP3214914B2 (en) refrigerator
CN205561401U (en) Use box of distinguishing flavor of that removes in refrigerator
JPH11211325A (en) Refrigerator
EP1154210B1 (en) Static refrigerator with evaporator in air channel
CN108332002A (en) Vacuum heat insulation materials, the manufacturing method of vacuum heat insulation materials and refrigerator
JP2001248951A (en) Refrigerator, and manufacturing method for evaporator for refrigerator chamber for use in former
JP2011133096A (en) Heat insulating panel
JPH1026463A (en) Refrigerator
CN113410017A (en) Porous room-temperature magnetic refrigeration composite material and preparation method thereof
CN113679250A (en) Tea bar machine with cold-stored function
CN213238077U (en) Horizontal air-cooled refrigerator
CN103591754B (en) Case gallbladder and there is its refrigerating plant
KR100336129B1 (en) Duct of refrigerator
CN107449081A (en) A kind of intelligent air condition fan
CN106584025A (en) Processing technology for rear baffle for refrigerator compressor
KR20030037041A (en) kim-chi refrigerator having heat accumulating material
KR200346607Y1 (en) Evaporator of air conditioner
JP2006329554A (en) Cooling unit

Legal Events

Date Code Title Description
AS Assignment

Owner name: DAEWOO ELECTRONICS CORPORATION, KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KIM, JIN SOO;REEL/FRAME:014306/0953

Effective date: 20030616

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION