US20230331625A1 - Insulation materials for a vacuum insulated structure and methods of forming - Google Patents
Insulation materials for a vacuum insulated structure and methods of forming Download PDFInfo
- Publication number
- US20230331625A1 US20230331625A1 US18/211,899 US202318211899A US2023331625A1 US 20230331625 A1 US20230331625 A1 US 20230331625A1 US 202318211899 A US202318211899 A US 202318211899A US 2023331625 A1 US2023331625 A1 US 2023331625A1
- Authority
- US
- United States
- Prior art keywords
- glass flakes
- insulation material
- vacuum insulated
- porous glass
- powder
- 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
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
- F25D23/02—Doors; Covers
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C11/00—Multi-cellular glass ; Porous or hollow glass or glass particles
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B32/00—Thermal after-treatment of glass products not provided for in groups C03B19/00, C03B25/00 - C03B31/00 or C03B37/00, e.g. crystallisation, eliminating gas inclusions or other impurities; Hot-pressing vitrified, non-porous, shaped glass products
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C11/00—Multi-cellular glass ; Porous or hollow glass or glass particles
- C03C11/005—Multi-cellular glass ; Porous or hollow glass or glass particles obtained by leaching after a phase separation step
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C15/00—Surface treatment of glass, not in the form of fibres or filaments, by etching
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C23/00—Other surface treatment of glass not in the form of fibres or filaments
- C03C23/008—Other surface treatment of glass not in the form of fibres or filaments comprising a lixiviation step
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
- C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
- C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
- C03C3/093—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium containing zinc or zirconium
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/097—Glass compositions containing silica with 40% to 90% silica, by weight containing phosphorus, niobium or tantalum
-
- 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
- F25D23/062—Walls defining a cabinet
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2203/00—Production processes
- C03C2203/20—Wet processes, e.g. sol-gel process
- C03C2203/30—Additives
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2203/00—Production processes
- C03C2203/20—Wet processes, e.g. sol-gel process
- C03C2203/34—Wet processes, e.g. sol-gel process adding silica powder
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2203/00—Production processes
- C03C2203/50—After-treatment
- C03C2203/52—Heat-treatment
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2204/00—Glasses, glazes or enamels with special properties
- C03C2204/04—Opaque glass, glaze or enamel
- C03C2204/06—Opaque glass, glaze or enamel opacified by gas
-
- 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
- F25D2201/00—Insulation
- F25D2201/10—Insulation with respect to heat
- F25D2201/12—Insulation with respect to heat using an insulating packing material
- F25D2201/126—Insulation with respect to heat using an insulating packing material of cellular type
-
- 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
- F25D2201/00—Insulation
- F25D2201/10—Insulation with respect to heat
- F25D2201/14—Insulation with respect to heat using subatmospheric pressure
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Thermal Insulation (AREA)
- Glass Compositions (AREA)
Abstract
A method of forming an insulation material for a vacuum insulated structure includes heating glass flakes to at least a glass transition temperature of the glass flakes to induce a phase separation of the glass into an acid insoluble silica phase and an acid soluble phase. The glass flakes can be derived from a glass composition containing (by weight): SiO2 from about 40% to about 80%, B2O3 from about 10% to about 40%, Na2O from about 1% to about 10%, Li2O from about 0% to about 3%, CaO from about 0% to about 10%, ZnO from about 0% to about 5%, P2O5 from about 0% to about 10%, and Al2O3 from about 0% to about 10%. The method also includes a step of etching the glass flakes to dissolve the acid soluble phase to form porous glass flakes.
Description
- This application is a division of U.S. patent Ser. No. 17/486,331, filed on Sep. 27, 2021, entitled “INSULATION MATERIALS FOR A VACUUM INSULATED STRUCTURE AND METHODS OF FORMING,” which claims priority to and the benefit under 35 U.S.C. § 119(e) of U.S. Provisional Application No. 63/093,941, filed on Oct. 20, 2020, entitled “INSULATION MATERIALS FOR A VACUUM INSULATED STRUCTURE AND METHODS OF FORMING,” the disclosures of which are hereby incorporated herein by reference in their entirety.
- The present disclosure generally relates to insulation materials for use in vacuum insulated structures, and more specifically, to insulation materials for use in vacuum insulated structures used in appliances, such as refrigerators and freezers, and methods of forming said insulation materials.
- According to another aspect of the present disclosure, a method of forming an insulation material for a vacuum insulated structure includes heating glass flakes to at least a glass transition temperature of the glass flakes to induce a phase separation of the glass into an acid insoluble silica phase and an acid soluble phase. The glass flakes can be derived from a glass composition containing (by weight): SiO2 from about 40% to about 80%, B2O3 from about 10% to about 40%, Na2O from about 1% to about 10%, Li2O from about 0% to about 3%, CaO from about 0% to about 10%, ZnO from about 0% to about 5%, P2O5 from about 0% to about 10%, and Al2O3 from about 0% to about 10%. The method also includes a step of etching the glass flakes to dissolve the acid soluble phase to form porous glass flakes.
- According to yet another aspect of the present disclosure, an insulation material for a vacuum insulated structure includes porous glass flakes with an acid insoluble silica phase, at least one opacifier, and at least one filler material.
- According to another aspect of the present disclosure, a method of forming an insulation material for a vacuum insulated structure includes heating glass flakes to induce a phase separation of the glass into an acid insoluble silica phase and an acid soluble phase. The glass flakes can be derived from a glass composition containing (by weight): SiO2 from about 40% to about 80%, B2O3 from about 10% to about 40%, Na2O from about 1% to about 10%, and CaO from about 0% to about 10%. The method also includes a step of etching the glass flakes to dissolve the acid soluble phase to form porous glass flakes.
- Aspects of the present disclosure relate to an insulation material containing porous glass flakes that can provide several advantages when used in vacuum insulated structures, such as those that are utilized in home appliances. For example, the porous glass flakes can be formed such that a desired additive is incorporated into the glass flakes at the time of forming the glass flakes rather than in a separate processing step at a later stage, which can provide cost and/or time savings. Aspects of the present disclosure also provide methods for forming porous glass flakes that have a deformed physical shape, which may decrease the degree to which the glass flakes align in stacks within the insulated structure, and thus decrease the solid conductivity of the insulation material. In some aspects, the porous glass flakes may exhibit a high strength compared to some conventional insulation materials, which can reduce the likelihood of bowing of the walls of a vacuum insulated structure that can occur during evacuation of the structure. In some aspects, the porous glass flakes may be less hygroscopic than some conventional insulation materials, which can facilitate faster evacuation of the structure in the process of decreasing the pressure within the structure to form a vacuum insulated structure.
- Transition metal oxides such as Cobalt oxide, Manganese oxide, and others can also be added from about 0% to about 10% total. The transition metal oxides add color to the glass, and therefore, may reduce radiative thermal conduction. Consequently, the transition metal oxides could act as opacifiers.
- These and other features, advantages, and objects of the present disclosure will be further understood and appreciated by those skilled in the art by reference to the following specification, claims, and appended drawings.
- In the drawings:
-
FIG. 1 is a front perspective view of an appliance, according to the present disclosure; -
FIG. 2 is a cross-sectional view of the appliance ofFIG. 1 including an insulation material, according to the present disclosure; and -
FIG. 3 is flow chart illustrating a method of forming an insulation material, according to the present disclosure. - The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles described herein.
- The present illustrated embodiments reside primarily in combinations of apparatus components and method steps relating to insulation materials for use in vacuum insulated structures, such as may be used in insulating home appliances. Vacuum insulated structures may be utilized in appliances to limit or control the transfer of heat. It can be challenging to identify materials that provide the desired thermal conductivity and which can be compacted efficiently to achieve the desired final vacuum density in the vacuum insulated structure. In some applications, it can be challenging to achieve a desired final vacuum density while also avoiding damage or deformation to the vacuum insulated structure (e.g., avoiding bowing of the walls of the vacuum insulated structure). Aspects of the present disclosure provide an insulation material that includes porous glass flakes. The porous glass flakes have a thermal conductivity suitable for use in vacuum insulated structures used in appliances and can also have sufficient strength to facilitate forming a desired vacuum in a vacuum insulated structure typically used in an appliance, while decreasing the likelihood of damage/deformation of the vacuum insulated structure during the evacuation process. In addition, the porous glass flakes of the present disclosure may be less hygroscopic than some conventional insulation materials, such as fumed silica, which may increase the rate at which a desired pressure can be reached within the vacuum insulated structure.
- Accordingly, the apparatus components and method steps have been represented, where appropriate, by conventional symbols in the drawings, showing only those specific details that are pertinent to understanding the embodiments of the present disclosure so as not to obscure the disclosure with details that will be readily apparent to those of ordinary skill in the art having the benefit of the description herein. Further, like numerals in the description and drawings represent like elements.
- As used herein, the term “about” means that amounts, sizes, formulations, parameters, and other quantities and characteristics are not and need not be exact, but may be approximate and/or larger or smaller, as desired, reflecting tolerances, conversion factors, rounding off, measurement error and the like, and other factors known to those of skill in the art. When the term “about” is used in describing a value or an end-point of a range, the disclosure should be understood to include the specific value or end-point referred to. Whether or not a numerical value or end-point of a range in the specification recites “about,” the numerical value or end-point of a range is intended to include two embodiments: one modified by “about,” and one not modified by “about.” It will be further understood that the end-points of each of the ranges are significant both in relation to the other end-point, and independently of the other end-point. In some aspects, the term “about” may encompass values within ±10%, ±5%, or ±1% of a specified value.
- For purposes of description herein, the terms “upper,” “lower,” “right,” “left,” “rear,” “front,” “vertical,” “horizontal,” and derivatives thereof shall relate to the disclosure as oriented in
FIG. 1 . Unless stated otherwise, the term “front” shall refer to the surface of the element closer to an intended viewer, and the term “rear” shall refer to the surface of the element further from the intended viewer. However, it is to be understood that the disclosure may assume various alternative orientations, except where expressly specified to the contrary. It is also to be understood that the specific devices and processes illustrated in the attached drawings, and described in the following specification are simply exemplary embodiments of the inventive concepts defined in the appended claims. Hence, specific dimensions and other physical characteristics relating to the embodiments disclosed herein are not to be considered as limiting, unless the claims expressly state otherwise. - The terms “including,” “comprises,” “comprising,” or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by “comprises a . . . ” does not, without more constraints, preclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.
- Referring to
FIGS. 1-2 ,reference numeral 10 generally designates a vacuum insulated structure in the form of a refrigeratingappliance 14. The vacuum insulatedstructure 10 of the present disclosure may be in the form of a vacuum insulated structural cabinet, as illustrated, or a vacuum insulated panel that may be used as an insulation member for theappliance 14. Theappliance 14 can be in the form of a refrigerating appliance having arefrigeration compartment 16 and afreezer compartment 18, as illustrated. It is generally contemplated that theappliance 14 can include first and second insulateddoor assemblies refrigeration compartment 16 and thefreezer compartment 18, respectively. The first and second insulateddoor assemblies appliance 14 to allow for selective access to therefrigeration compartment 16 and thefreezer compartment 18, respectively. Theappliance 14 can have additional components based on the type of appliance, the details of which are not germane to the aspects of the disclosure, examples of which include a controller, user interface, lights, a compressor, a condenser, an evaporator, an ice maker, a water dispenser, etc. Theappliance 14 can also be in the form of a refrigerating appliance including only a refrigeration compartment, only a freezer compartment, or any various combinations and configurations thereof. For example, in non-limiting examples, the refrigerating appliance can be a bottom mount refrigerator, a bottom mount French door refrigerator, a top mount refrigerator, a side-by-side refrigerator, a four-door French door refrigerator, and/or a five door French door refrigerator. While the vacuum insulatedstructure 10 is described in the context of a refrigerating appliance, it is understood that the vacuum insulatedstructure 10 can be used in a variety of appliances, examples of which include ovens, dishwashers, water heaters, laundry appliances, and any other appliances that may benefit from insulation. - The vacuum insulated
structure 10 can include aninner liner 30 coupled with anouter wrapper 32 to define a vacuum insulatedcavity 40 of acabinet body 42 of theappliance 14. In some embodiments, atrim breaker 34 can be provided for coupling theinner liner 30 with theouter wrapper 32, as illustrated. Thetrim breaker 34 serves as the connection interface between theinner liner 30 and theouter wrapper 32. Theinner liner 30,outer wrapper 32, andoptional trim breaker 34, can be considered a structural wrapper that defines the vacuum insulatedcavity 40. Aninsulation material 50 is disposed in the vacuum insulatedcavity 40. The vacuum insulatedcavity 40 may have a wide range of thicknesses configured to accommodatedifferent insulation materials 50. Theinsulation material 50 includes porous glass flakes, and optionally one or more additional materials, examples of which include opacifiers, fumed silica, perlite, precipitated silica, aerogel powder, silicon carbide, carbon black powder, graphite, rice husk, ash powder, diatomaceous earth, and cenospheres. - In some aspects, the first and/or second
insulated door assemblies structure insulation material 50 as described with respect to the vacuum insulatedstructure 10. The structure and/or materials of the inner liner and outer wrapper components of the first and secondinsulated door assemblies cavity 40 within which theinsulation material 50 is housed may be different than those of the body of theappliance 14, and thus are labeled with the suffix “a” and “b.” However, the body of theappliance 14 may also have the same or similar vacuuminsulated cavities 40 to that of the first and secondinsulated door assemblies insulated door assembly 20 can include a first doorinner liner 52 and a first doorouter wrapper 54, which together define a firstdoor insulating cavity 56. The secondinsulated door assembly 22 can include a second doorinner liner 60 and a second doorouter wrapper 62, which together define a seconddoor insulating cavity 64. Theinsulation material 50 may be present in one or both of the first and seconddoor insulating cavities insulation material 50 may be the same in the vacuum insulatedcavity 40 and the first and seconddoor insulating cavities cavity 40, the firstdoor insulating cavity 56, and the seconddoor insulating cavity 64 may have a different insulation material than the other of the vacuum insulatedcavity 40, the firstdoor insulating cavity 56, and the seconddoor insulating cavity 64. In some aspects, one or both of the first and secondinsulated door assemblies structure insulated door assemblies - The
inner liner 30,outer wrapper 32,optional trim breaker 34, first and second doorinner liners outer wrappers inner liner 30,outer wrapper 32, andoptional trim breaker 34 can be made from materials suitable for maintaining a vacuum within the vacuum insulated cavity 40 (i.e., maintain a predetermined lower pressure within the vacuum insulatedcavity 40, relative to ambient pressure). When the first and secondinsulated door assemblies structure inner liners outer wrappers door insulating cavities - While aspects of the
insulation material 50 are described with respect to the vacuum insulatedstructure 10 used to form thecabinet body 42 of theappliance 14, it will be understood that aspects of theinsulation material 50 can be used with one or both of the vacuum insulatedstructures insulated door assemblies cavity 40 may extend along theinner liner 30 at amachine compartment 61. A steppedportion 63 defined by theinner liner 30 may include a vacuum insulated area that insulates the interior of the appliance from heat generated within themachine compartment 61. - The
insulation material 50 includes porous glass flakes and may optionally include one or more additional filler materials. The porous glass flakes can be used alone or in combination with the one or more additional filler materials to provide theinsulation material 50 with the desired characteristics, such as thermal conductivity and vacuum density, based on the intended application of the vacuum insulatedstructure 10. The glass flakes are inert, and, therefore, are generally or completely resistant to corrosion. The glass flakes can be formed from a glass composition that is phase separable upon heating to temperatures at or above the glass transition temperature (Tg) of the glass flakes into an acid insoluble silica phase and an acid soluble phase. The phase-separated glass flakes can then be etched to dissolve the acid soluble phase and form porous glass flakes. In some aspects, the acid soluble phase is an acid soluble alkali phase. - The glass composition for forming the glass flakes can include, in percent by weight (wt %): about 40 wt % to about 80 wt % SiO2, about 10 wt % to about 40 wt % B2O3, about 1 wt % to about 10 wt % Na2O, about 0 wt % to about 3 wt % Li2O, about 0 wt % to about 10 wt % CaO, about 0 wt % to about 5 wt % ZnO, about 0 wt % to about 10 wt % P2O5, and about 0 wt % to about 10 wt % Al2O3. In some aspects, the glass composition for forming the glass flakes can also include one or more opacifiers. Non-limiting examples of suitable opacifiers include magnesium oxide, cobalt oxide, and carbon black powder. In some aspects, the opacifier is an additive adapted to absorb infrared radiation.
- In some aspects, the glass flakes can have an average thickness of from about 10 nm to about 10 μm. In some examples, the glass flake can have an average thickness of from about 10 nm to about 10 μm, about 50 nm to about 10 μm, about 100 nm to about 10 μm, about 250 nm to about 10 μm, about 500 nm to about 10 μm, about 750 nm to about 10 μm, about 1 μm to about 10 μm, about 2 μm to about 10 μm, about 5 μm to about 10 μm, about 8 μm to about 10 μm, about 10 nm to about 8 μm, about 50 nm to about 8 μm, about 100 nm to about 8 μm, about 250 nm to about 8 μm, about 500 nm to about 8 μm, about 750 nm to about 8 μm, about 1 μm to about 8 μm, about 2 μm to about 8 μm, about 5 μm to about 8 μm, about 10 nm to about 5 μm, about 50 nm to about 5 μm, about 100 nm to about 5 μm, about 250 nm to about 5 μm, about 500 nm to about 5 μm, about 750 nm to about 5 μm, about 1 μm to about 5 μm, about 2 μm to about 5 μm, about 10 nm to about 2 μm, about 50 nm to about 2 μm, about 100 nm to about 2 μm, about 250 nm to about 2 μm, about 500 nm to about 2 μm, about 750 nm to about 2 μm, about 1 μm to about 2 μm, about 10 nm to about 1 μm, about 50 nm to about 1 μm, about 100 nm to about 1 μm, about 250 nm to about 1 μm, about 500 nm to about 1 μm, about 750 nm to about 1 μm, about 10 nm to about 750 nm, about 50 nm to about 750 nm, about 100 nm to about 750 nm, about 250 nm to about 750 nm, about 500 nm to about 750 nm, about 100 nm to about 1000 nm, about 100 nm to about 900 nm, about 100 nm to about 800 nm, about 100 nm to about 700 nm, about 100 nm to about 600 nm, about 100 nm to about 500 nm, about 100 nm to about 400 nm, about 100 nm to about 300 nm, about 100 nm to about 200 nm, about 200 nm to about 1000 nm, about 200 nm to about 900 nm, about 200 nm to about 800 nm, about 200 nm to about 700 nm, about 200 nm to about 600 nm, about 200 nm to about 500 nm, about 200 nm to about 400 nm, about 200 nm to about 300 nm, about 300 nm to about 1000 nm, about 300 nm to about 900 nm, about 300 nm to about 800 nm, about 300 nm to about 700 nm, about 300 nm to about 600 nm, about 300 nm to about 500 nm, about 300 nm to about 400 nm, about 400 nm to about 1000 nm, about 400 nm to about 900 nm, about 400 nm to about 800 nm, about 400 nm to about 700 nm, about 400 nm to about 600 nm, about 400 nm to about 500 nm, about 500 nm to about 1000 nm, about 500 nm to about 900 nm, about 500 nm to about 800 nm, about 500 nm to about 700 nm, about 500 nm to about 600 nm, about 700 nm to about 1000 nm, about 800 nm to about 1000 nm, or about 900 nm to about 1000. To obtain the proper size glass flakes, the glass flakes may be separated by particle size distribution through a sieve.
- In some aspects, the glass flakes can have an aspect ratio of from about 100 to about 2,000. As used herein, the aspect ratio refers to the ratio of a length of the flake to an average thickness of the flake (length/thickness). The length of the flake is measured as the longest axis of the flake and the thickness is measured as the dimension perpendicular to the longest axis (the length). For example, the glass flakes can have an aspect ratio of from about 100 to about 2,000, about 250 to about 2,000, about 500 to about 2,000, about 750 to about 2,000, about 1,000 to about 2,000, about 1,500 to about 2,000, about 1,750 to about 2,000, about 100 to about 1,750, about 250 to about 1,750, about 500 to about 1,750, about 750 to about 1,750, about 1,000 to about 1,750, about 1,500 to about 1,750, about 100 to about 1,500, about 250 to about 1,500, about 500 to about 1,500, about 750 to about 1,500, about 1,000 to about 1,500, about 100 to about 1,000, about 250 to about 1,000, about 500 to about 1,000, about 750 to about 1,000, about 100 to about 750, about 250 to about 750, about 500 to about 750, about 100 to about 500, or about 250 to about 500.
-
FIG. 3 illustrates amethod 100 for forming aninsulation material 50 containing the porous glass particles according to aspects of the present disclosure. Themethod 100 can be used to form aninsulation material 50 for use in the vacuum insulatedstructures - The
method 100 ofFIG. 3 includes forming glass flakes atstep 102. The glass flakes atstep 102 can be formed using the glass composition described above according to any suitable method for forming glass flakes. In one example, the glass composition can be used to form a glass melt that is then poured onto a rotating disk. The rotating disk can be mounted within an enclosed box to which a vacuum is applied. Parameters such as the rate the glass melt is poured and the speed of the rotating disk can be selected to provide a glass sheet having the desired thickness. The glass sheet can then be broken into smaller fragments to form glass flakes. In another example, a glass melt can be formed from the glass composition and the glass melt can be inflated into a hollow glass film having a balloon-like shape by a blowing gas supplied through a nozzle. The hollow glass film can then be crushed (e.g., using pressure rolls) to form the glass flakes. In yet another example, glass flakes can be formed by drawing a thin sheet of glass from a glass melt and then breaking the sheet of glass to form glass flakes. - In some embodiments, the glass composition used to form the glass flakes at
step 102 can include one or more opacifiers, and optionally one or more additional additives. Non-limiting examples of suitable opacifiers include magnesium oxide, cobalt oxide, and carbon black powder. In this manner, the opacifiers and optional additives can be incorporated into the glass flakes, which may provide time and/or cost savings compared to adding the opacifiers and optional additives in a separate processing step at a later stage. - The glass flakes formed at
step 102 can be heat treated atstep 104 at a temperature at or above the glass transition temperature Tg of the glass flakes. The temperature and the heating time period of thestep 104 can be selected such that the glass phase-separates into an acid insoluble silica phase and an acid soluble phase. The phase-separated glass flakes can then be treated with an etchant in anetching step 106 to dissolve the acid soluble phase. Removal of the acid soluble phase creates pores in the acid insoluble phases of the glass, thus forming porous glass flakes atstep 108. The etchant can be any suitable material capable of dissolving the acid soluble phase, examples of which include hydrochloric acid, hydrofluoric acid, and nitric acid. - Without wishing to be limited by any theory, it is believed that the porosity of the glass flakes affects the thermal conductivity of the glass flakes. The components of the glass composition, parameters of the heat treatment at
step 104, and/or parameters of the etching atstep 106 can be selected to provide the glass flakes with the desired porosity. For example, the degree of phase separation induced during the heat treatment atstep 104 can be affected by parameters such as the temperature and heating time period. In another example, the degree to which the acid soluble phase is dissolved in theetching step 106 can be affected by parameters such as the type of etchant, etchant concentration, temperature, and etching time. - The
method 100 can optionally include anadditional heating step 110 before and/or after theetching step 106. Theadditional heating step 110 can include heating the glass flakes to a temperature at or below the glass transition temperature Tg of the glass flakes to deform the physical shape of the glass flakes. Deforming the shape glass flakes can provide the glass flakes with rounded edges and/or deviations in the cross-sectional shape of the flake (i.e., compared to the initial cross-sectional shape of the as-formed flake). Without wishing to be bound by any theory, it is believed that deforming the glass flakes decreases the degree to which the glass flakes align in stacks within the vacuum insulatedcavity 40. Alignment and stacking of the glass flakes can increase the solid conductivity of theinsulation material 50, which may be undesirable in some applications. - The
method 100 of forming theinsulation material 50 can also include anoptional step 112 of combining the porous glass flakes formed atstep 108 with additional filler materials and/or additives. For example, the porous glass flakes formed atstep 108 can be combined with other filler materials, examples of which include fumed silica, perlite, precipitated silica, aerogel powder, silicon carbide, carbon black powder, graphite, rice husk, ash powder, diatomaceous earth, and cenospheres, to form aninsulation material 50 having the desired characteristics, such as thermal conductivity, bulk density, and achievable final vacuum density. Additionally, or alternatively, the porous glass flakes formed atstep 108 can be combined with one or more additives, such as opacifiers, colorants, electrical conductivity additives, radiant energy reflectivity additives, infrared absorbing additives, etc. - In some embodiments, all of the
steps 102 through 108, andoptional steps 110 and/or 112, ofmethod 100 can be performed at a single processing location. In other embodiments, one or more of thesteps 102 through 108, andoptional steps 110 and/or 112, can be performed at an off-site location(s) with respect to the other steps. For example, the process of the forming the glass flakes atstep 102 may be performed off-site or purchased from a supplier and treated according to thesteps 104 through 108, andoptional steps 110 and/or 112, to form theinsulation material 50. In another example, the porous glass flakes can be formed according tosteps 102 through 108, andoptional step 110, off-site or purchased from a supplier, and then combined with additional filler materials and/or additives atstep 112 to form theinsulation material 50. - The
insulation material 50 according to the present disclosure can be used with any suitable vacuum insulated structure, such as the vacuum insulatedstructures FIGS. 1-2 . For example, with respect to the vacuum insulatedstructure 10, theinner liner 30 can be assembled with theouter wrapper 32 such that the walls of theinner liner 30 are spaced from the adjacent walls of theouter wrapper 32 to define the vacuum insulatedcavity 40. Thetrim breaker 34 can be coupled with the open ends of theinner liner 30 and theouter wrapper 32 to seal the vacuum insulatedcavity 40. In some embodiments, the open ends of theinner liner 30 andouter wrapper 32 include flanges that can be coupled to seal the vacuum insulatedcavity 40 in addition to or as an alternative to thetrim breaker 34. Sealing theinner liner 30,outer wrapper 32, andoptional trim breaker 34 can include any suitable combination of welds, adhesives, gaskets, seals, and/or connecting structures. Theinsulation material 50 can be filled into the sealed vacuum insulatedcavity 40 through one or more filling ports. The filled vacuum insulatedcavity 40 can then be evacuated through one or more evacuation ports to create a vacuum chamber within the vacuum insulatedcavity 40. For example, the vacuum insulatedcavity 40 can be fluidly coupled with an external vacuum system to draw air from the vacuum insulatedcavity 40 to obtain a lower pressure within the vacuum insulatedcavity 40 relative to ambient pressure (i.e., form a vacuum insulated structure). The vacuum insulatedstructures insulated door assemblies - In other embodiments, the vacuum insulated
structures insulation material 50 is filled. These vacuum insulated panels can then be used within the vacuum insulatedcavity 40, the firstdoor insulating cavity 56, and/or the seconddoor insulating cavity 64 of thecabinet body 42, the firstinsulated door assembly 20, and/or the secondinsulated door assembly 22, respectively. While the insulation material and vacuum insulated structures of the present disclosure are described in the context of home appliances, it is understood that the insulation material and vacuum insulated structures can be utilized in any other applications where sound and/or thermal insulation may be desired. - The following non-limiting aspects are encompassed by the present disclosure. To the extent not already described, any one of the features of the first through the twentieth aspects may be combined in part or in whole with features of any one or more of the other aspects of the present disclosure to form additional aspects, even if such a combination is not explicitly described.
- According to one aspect of the present disclosure, a vacuum insulated structure for use in an appliance includes an inner liner and an outer wrapper coupled to the inner liner. A vacuum insulated cavity is defined therebetween. An insulation material is disposed in the vacuum insulated cavity. The insulation material includes porous glass flakes.
- According to another aspect, an insulation material includes fumed silica, perlite, precipitated silica, aerogel powder, silicon carbide, carbon black powder, graphite, rice husk, ash powder, diatomaceous earth, and cenospheres.
- According to still another aspect of the present disclosure, the porous glass flakes have an aspect ratio of from about 100 to about 2,000.
- According to another aspect of the present disclosure, the porous glass flakes comprise an acid insoluble silica phase.
- According to another aspect, an insulation material includes at least one opacifier.
- According to yet another aspect, the porous glass flakes include at least one opacifier.
- According to still another aspect of the present disclosure, at least one opacifier of the porous glass flakes is selected from magnesium oxide, cobalt oxide, and carbon black powder.
- According to another aspect, the porous glass flakes have an average thickness of from about 10 nm to about 10 μm.
- According to still another aspect of the present disclosure, a vacuum insulated structure includes fumed silica and at least one opacifier.
- According to another aspect of the present disclosure, a method of forming an insulation material for a vacuum insulated structure includes heating glass flakes to at least a glass transition temperature of the glass flakes to induce a phase separation of the glass flakes into an acid insoluble silica phase and an acid soluble phase. The glass flakes are derived from a glass composition that includes (by weight): SiO2 from about 40% to about 80%, B2O3 from about 10% to about 40%, Na2O from about 1% to about 10%, Li2O from about 0% to about 3%, CaO from about 0% to about 10%, ZnO from about 0% to about 5%, P2O5 from about 0% to about 10%, and Al2O3 from about 0% to about 10%. Then, the glass flakes are etched to dissolve the acid soluble phase to form porous glass flakes.
- According to another aspect of the present disclosure, a method of forming an insulation material for a vacuum insulated structure includes combining the porous glass flakes with at least one of fumed silica, perlite, precipitated silica, aerogel powder, silicon carbide, carbon black powder, graphite, rice husk, ash powder, diatomaceous earth, and cenospheres.
- According to still another aspect, a method of forming an insulation material for a vacuum insulated structure includes a step of combining the porous glass flakes with at least one of fumed silica, perlite, precipitated silica, aerogel powder, silicon carbide, carbon black powder, graphite, rice husk, ash powder, diatomaceous earth, and cenospheres that further includes the porous glass flakes having an aspect ratio of from about 100 to about 2,000.
- According to yet another aspect of the present disclosure, a method of forming an insulation material for a vacuum insulated structure includes a step of step of combining the porous glass flakes with at least one of fumed silica, perlite, precipitated silica, aerogel powder, silicon carbide, carbon black powder, graphite, rice husk, ash powder, diatomaceous earth, and cenospheres that further includes the porous glass flakes having an average thickness of from about 10 nm to about 10 μm.
- According to another aspect of the present disclosure, a method of forming an insulation material for a vacuum insulated structure includes heating the glass flakes to a temperature less than the glass transition temperature of the glass flakes one of prior to the etching or subsequent to the etching to deform a shape of the porous glass flakes.
- According to still another aspect of the present disclosure, a method of forming an insulation material for a vacuum insulated structure includes applying at least one opacifier including transition metal oxides from about 0% to about 10% to the glass composition.
- According to still another aspect, a method of forming an insulation material for a vacuum insulated structure includes a step of applying at least one opacifier that further includes selecting the opacifier from magnesium oxide, cobalt oxide, and carbon black powder.
- According to another aspect of the present disclosure, an insulation material for a vacuum insulated structure includes porous glass flakes that have an acid insoluble silica phase, at least one opacifier, and at least one filler material.
- According to still another aspect of the present disclosure, at least one filler material is selected from fumed silica, perlite, precipitated silica, aerogel powder, silicon carbide, carbon black powder, graphite, rice husk, ash powder, diatomaceous earth, cenospheres, and combinations thereof.
- According to another aspect of the present disclosure at least one opacifier is incorporated into the porous glass flakes.
- According to yet another aspect of the present disclosure, at least one opacifier is selected from magnesium oxide, cobalt oxide, and carbon black powder.
- It will be understood by one having ordinary skill in the art that construction of the described disclosure and other components is not limited to any specific material. Other exemplary embodiments of the disclosure disclosed herein may be formed from a wide variety of materials, unless described otherwise herein.
- For purposes of this disclosure, the term “coupled” (in all of its forms, couple, coupling, coupled, etc.) generally means the joining of two components (electrical or mechanical) directly or indirectly to one another. Such joining may be stationary in nature or movable in nature. Such joining may be achieved with the two components (electrical or mechanical) and any additional intermediate members being integrally formed as a single unitary body with one another or with the two components. Such joining may be permanent in nature or may be removable or releasable in nature unless otherwise stated.
- It is also important to note that the construction and arrangement of the elements of the disclosure as shown in the exemplary embodiments is illustrative only. Although only a few embodiments of the present innovations have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited. For example, elements shown as integrally formed may be constructed of multiple parts or elements shown as multiple parts may be integrally formed, the operation of the interfaces may be reversed or otherwise varied, the length or width of the structures and/or members or connector or other elements of the system may be varied, the nature or number of adjustment positions provided between the elements may be varied. It should be noted that the elements and/or assemblies of the system may be constructed from any of a wide variety of materials that provide sufficient strength or durability, in any of a wide variety of colors, textures, and combinations. Accordingly, all such modifications are intended to be included within the scope of the present innovations. Other substitutions, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the desired and other exemplary embodiments without departing from the spirit of the present innovations.
- It will be understood that any described processes or steps within described processes may be combined with other disclosed processes or steps to form structures within the scope of the present disclosure. The exemplary structures and processes disclosed herein are for illustrative purposes and are not to be construed as limiting.
Claims (19)
1. A method of forming an insulation material for a vacuum insulated structure, comprising:
heating glass flakes to at least a glass transition temperature of the glass flakes to induce a phase separation of the glass flakes into an acid insoluble silica phase and an acid soluble phase, wherein the glass flakes are derived from a glass composition comprising (by weight):
SiO2 from about 40% to about 80%,
B2O3 from about 10% to about 40%,
Na2O from about 1% to about 10%,
Li2O from about 0% to about 3%,
CaO from about 0% to about 10%,
ZnO from about 0% to about 5%,
P2O5 from about 0% to about 10%, and
Al2O3 from about 0% to about 10%; and
etching the glass flakes to dissolve the acid soluble phase to form porous glass flakes.
2. The method of claim 1 , further comprising:
combining the porous glass flakes with at least one of fumed silica, perlite, precipitated silica, aerogel powder, silicon carbide, carbon black powder, graphite, rice husk, ash powder, diatomaceous earth, and cenospheres.
3. The method of claim 2 , wherein the step of combining the porous glass flakes with at least one of fumed silica, perlite, precipitated silica, aerogel powder, silicon carbide, carbon black powder, graphite, rice husk, ash powder, diatomaceous earth, and cenospheres further includes the porous glass flakes having an aspect ratio of from about 100 to about 2,000.
4. The method of claim 2 , wherein the step of combining the porous glass flakes with at least one of fumed silica, perlite, precipitated silica, aerogel powder, silicon carbide, carbon black powder, graphite, rice husk, ash powder, diatomaceous earth, and cenospheres further includes the porous glass flakes having an average thickness of from about 10 nm to about 10 μm.
5. The method of claim 1 , further comprising:
heating the glass flakes to a temperature less than the glass transition temperature of the glass flakes one of prior to the etching or subsequent to the etching to deform a shape of the porous glass flakes.
6. The method of claim 1 , further comprising:
applying at least one opacifier including transition metal oxides from about 0% to about 10% to the glass composition.
7. The method of claim 6 , wherein the step of applying at least one opacifier further includes selecting the opacifier from magnesium oxide, cobalt oxide, and carbon black powder.
8. An insulation material for a vacuum insulated structure, comprising:
porous glass flakes comprising an acid insoluble silica phase;
at least one opacifier; and
at least one filler material.
9. The insulation material of claim 8 , wherein the at least one filler material is selected from fumed silica, perlite, precipitated silica, aerogel powder, silicon carbide, carbon black powder, graphite, rice husk, ash powder, diatomaceous earth, cenospheres, and combinations thereof.
10. The insulation material of claim 8 , wherein the at least one opacifier is incorporated into the porous glass flakes.
11. The insulation material of claim 8 , wherein the at least one opacifier is selected from magnesium oxide, cobalt oxide, and carbon black powder.
12. The insulation material of claim 8 , wherein the porous glass flakes have an aspect ratio of from about 100 to about 2,000.
13. The insulation material of claim 8 , wherein the porous glass flakes have an average thickness of from about 10 nm to about 10 μm.
14. The insulation material of claim 8 , wherein the porous glass flakes are combined with fumed silica.
15. A method of forming an insulation material for a vacuum insulated structure, comprising:
heating glass flakes to induce a phase separation of the glass flakes into an acid insoluble silica phase and an acid soluble phase, wherein the glass flakes are derived from a glass composition comprising (by weight):
SiO2 from about 40% to about 80%;
B2O3 from about 10% to about 40%;
Na2O from about 1% to about 10%; and
CaO from about 0% to about 10%; and
etching the glass flakes to dissolve the acid soluble phase to form porous glass flakes.
16. The method of claim 15 , further comprising:
combining the porous glass flakes with at least one of fumed silica, perlite, precipitated silica, aerogel powder, silicon carbide, carbon black powder, graphite, rice husk, ash powder, diatomaceous earth, and cenospheres.
17. The method of claim 15 , further comprising:
heating the glass flakes to a temperature less than the glass transition temperature of the glass flakes one of prior to the etching or subsequent to the etching to deform a shape of the porous glass flakes.
18. The method of claim 15 , further comprising:
applying at least one opacifier including of transition metal oxides from about 0% to about 10% to the glass composition.
19. The method of claim 18 , wherein the step of applying at least one opacifier further includes selecting the opacifier from magnesium oxide, cobalt oxide, and carbon black powder.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18/211,899 US20230331625A1 (en) | 2020-10-20 | 2023-06-20 | Insulation materials for a vacuum insulated structure and methods of forming |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US202063093941P | 2020-10-20 | 2020-10-20 | |
US17/486,331 US11691908B2 (en) | 2020-10-20 | 2021-09-27 | Insulation materials for a vacuum insulated structure and methods of forming |
US18/211,899 US20230331625A1 (en) | 2020-10-20 | 2023-06-20 | Insulation materials for a vacuum insulated structure and methods of forming |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US17/486,331 Division US11691908B2 (en) | 2020-10-20 | 2021-09-27 | Insulation materials for a vacuum insulated structure and methods of forming |
Publications (1)
Publication Number | Publication Date |
---|---|
US20230331625A1 true US20230331625A1 (en) | 2023-10-19 |
Family
ID=78212011
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US17/486,331 Active US11691908B2 (en) | 2020-10-20 | 2021-09-27 | Insulation materials for a vacuum insulated structure and methods of forming |
US18/211,899 Pending US20230331625A1 (en) | 2020-10-20 | 2023-06-20 | Insulation materials for a vacuum insulated structure and methods of forming |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US17/486,331 Active US11691908B2 (en) | 2020-10-20 | 2021-09-27 | Insulation materials for a vacuum insulated structure and methods of forming |
Country Status (3)
Country | Link |
---|---|
US (2) | US11691908B2 (en) |
EP (1) | EP3998446B1 (en) |
CN (1) | CN114383370A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3443284B1 (en) * | 2016-04-15 | 2020-11-18 | Whirlpool Corporation | Vacuum insulated refrigerator structure with three dimensional characteristics |
Family Cites Families (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2106744A (en) | 1934-03-19 | 1938-02-01 | Corning Glass Works | Treated borosilicate glass |
US2221709A (en) | 1938-01-29 | 1940-11-12 | Corning Glass Works | Borosilicate glass |
US2286275A (en) | 1940-09-10 | 1942-06-16 | Corning Glass Works | Method of treating borosilicate glasses |
US3843341A (en) * | 1972-03-02 | 1974-10-22 | Ppg Industries Inc | Method of making thermally stable and crush resistant microporous glass catalyst supports |
US3923688A (en) | 1972-03-02 | 1975-12-02 | Ppg Industries Inc | Thermally stable and crush resistant microporous glass catalyst supports and methods of making |
US3972720A (en) | 1974-03-01 | 1976-08-03 | Ppg Industries, Inc. | Phase separatable borosilicate glass compositions |
US4966613A (en) | 1984-11-30 | 1990-10-30 | Ppg Industries, Inc. | Method of producing effective porous glass shapes |
US4778499A (en) | 1984-12-24 | 1988-10-18 | Ppg Industries, Inc. | Method of producing porous hollow silica-rich fibers |
US5071794A (en) * | 1989-08-04 | 1991-12-10 | Ferro Corporation | Porous dielectric compositions |
JPH08117575A (en) | 1994-10-18 | 1996-05-14 | Agency Of Ind Science & Technol | Porous glass film having ultrafine pore, manufacture thereof, and highly selective gas separation film |
JP3897850B2 (en) | 1997-02-27 | 2007-03-28 | 三菱電機株式会社 | VACUUM INSULATION PANEL, CORE MANUFACTURING METHOD, AND REFRIGERATOR USING VACUUM INSULATION PANEL |
JP4273466B2 (en) | 1997-02-27 | 2009-06-03 | 三菱電機株式会社 | Vacuum insulation panel, method for manufacturing the same, and refrigerator using this vacuum insulation panel |
US6773793B2 (en) | 2002-05-24 | 2004-08-10 | Electrolock, Inc. | Glass flake paper |
US7285508B2 (en) * | 2003-08-29 | 2007-10-23 | Nippon Sheet Glass Company, Limited | Glass flake |
US20080014435A1 (en) * | 2006-02-09 | 2008-01-17 | Nanopore, Inc. | Method for the manufacture of vacuum insulation products |
ES2424219T3 (en) * | 2009-02-13 | 2013-09-30 | Evonik Degussa Gmbh | A thermal insulation material comprising precipitated silica |
US8881398B2 (en) * | 2011-05-26 | 2014-11-11 | General Electric Company | Method and apparatus for insulating a refrigeration appliance |
KR101323490B1 (en) * | 2011-08-23 | 2013-10-31 | (주)엘지하우시스 | Vacuum insulation panel with moisture-gas adsorbing getter material and manufacturing method thereof |
KR101832763B1 (en) | 2011-11-02 | 2018-02-28 | 엘지전자 주식회사 | A refrigerator comprising a vacuum space |
KR101365657B1 (en) | 2012-08-07 | 2014-02-24 | 주식회사 경동원 | Low Density Insulation of Inorganic Powder with Supporting Structure Using Expended Perlite, its Manufacturing Method and Making Machine |
KR101800047B1 (en) | 2013-05-03 | 2017-12-20 | (주)엘지하우시스 | Envelope for vacuum insulation panel and high performance vacuum insulation panel applied the same |
DE102013008263B4 (en) | 2013-05-15 | 2017-04-27 | Va-Q-Tec Ag | Method for producing a vacuum insulation body |
EP3203133A1 (en) * | 2014-10-03 | 2017-08-09 | Toyo Seikan Group Holdings, Ltd. | Vacuum heat-insulation material |
GB2534185B (en) | 2015-01-15 | 2017-03-29 | Kingspan Holdings (Irl) Ltd | Vacuum insulating panel |
US10196296B2 (en) | 2015-01-17 | 2019-02-05 | Hamid Hojaji | Fluid permeable and vacuumed insulating microspheres and methods of producing the same |
EP3270032A4 (en) * | 2015-03-10 | 2018-10-17 | Toshiba Lifestyle Products & Services Corporation | Vacuum insulated panel, core material, and refrigerator |
EP3800412B1 (en) * | 2016-09-28 | 2024-05-01 | Whirlpool Corporation | Processes for making a super-insulating core for a vacuum insulating structure |
US10697698B2 (en) * | 2016-12-23 | 2020-06-30 | Whirlpool Corporation | Vacuum insulated panel for counteracting vacuum bow induced deformations |
EP3559571A4 (en) * | 2016-12-23 | 2020-08-26 | Whirlpool Corporation | Vacuum insulated structures having internal chamber structures |
CN114728839A (en) * | 2019-11-11 | 2022-07-08 | 日本电气硝子株式会社 | Method for producing porous glass material |
-
2021
- 2021-09-27 US US17/486,331 patent/US11691908B2/en active Active
- 2021-10-14 EP EP21202773.4A patent/EP3998446B1/en active Active
- 2021-10-20 CN CN202111219260.4A patent/CN114383370A/en active Pending
-
2023
- 2023-06-20 US US18/211,899 patent/US20230331625A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
EP3998446A2 (en) | 2022-05-18 |
US20220119304A1 (en) | 2022-04-21 |
EP3998446A3 (en) | 2022-07-06 |
US11691908B2 (en) | 2023-07-04 |
EP3998446B1 (en) | 2023-08-23 |
CN114383370A (en) | 2022-04-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20230331625A1 (en) | Insulation materials for a vacuum insulated structure and methods of forming | |
EP2554759A2 (en) | High-performance vacuum insulation panel and manufacturing method thereof | |
KR100507783B1 (en) | Heat insulation box, and vacuum heat insulation material used therefor | |
US20220136763A1 (en) | Vacuum insulated structure | |
CN102725602B (en) | Refrigerator | |
US11692763B2 (en) | Insulation materials for a vacuum insulated structure and methods of forming | |
US20220107236A1 (en) | Feature in vacuum insulated structure to allow pressure monitoring | |
US11543172B2 (en) | Trim breaker for a structural cabinet that incorporates a structural glass contact surface | |
EP3615872B1 (en) | Structural cabinet for an appliance | |
US20230287729A1 (en) | Insulated door assembly | |
CN208107450U (en) | A kind of aerogel vacuum thermal insulation plate | |
CN109780377A (en) | Vacuum heat-insulating plate and refrigerator with it | |
US20230167937A1 (en) | Core material for vacuum insulation structures including porous walled hollow glass microspheres | |
CN109707954A (en) | Vacuum heat-insulating plate and refrigerator with it | |
JP5945708B2 (en) | refrigerator | |
JP7129979B2 (en) | Vacuum insulation material manufacturing method | |
JPH113461A (en) | Heat insulating door of automatic vending machine | |
JP2011153630A (en) | Vacuum heat insulating material and refrigerator using the same |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STPP | Information on status: patent application and granting procedure in general |
Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION |