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公开(公告)号：US20230341173A1
公开(公告)日：2023-10-26
申请号：US18342830
申请日：2023-06-28
Applicant: WHIRLPOOL CORPORATION
Inventor： Ashish Nigam , Shayta Roy
CPC classification number: F25D23/065 , C04B14/18 , C04B14/24 , F16L59/028 , C04B2103/56
Abstract: An appliance cabinet includes a structural envelope having an exterior surface and an interior surface that defines an insulating cavity, wherein the insulating cavity defines an at least partial vacuum. A plurality of silica-based agglomerates are disposed within the insulating cavity, wherein each agglomerate of the plurality of silica-based agglomerates includes silica-based powder insulation material that is water-densified and is at least substantially free of a material binder. A secondary insulation material is disposed within interstitial spaces defined between the plurality of silica-based agglomerates, wherein the plurality of silica-based agglomerates defines an interior structure that resists inward compressive forces exerted as a result of the at least partial vacuum defined within the insulating cavity.
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公开(公告)号：US11740009B2
公开(公告)日：2023-08-29
申请号：US17545026
申请日：2021-12-08
Applicant: WHIRLPOOL CORPORATION
Inventor： Ashish Nigam , Shayta Roy
IPC: F25D23/06 , C04B14/18 , C04B14/24 , F16L59/02 , C04B103/56
CPC classification number: F25D23/065 , C04B14/18 , C04B14/24 , F16L59/028 , C04B2103/56 , F25D2201/122 , F25D2201/14
Abstract: An appliance cabinet includes a structural envelope having an exterior surface and an interior surface that defines an insulating cavity, wherein the insulating cavity defines an at least partial vacuum. A plurality of silica-based agglomerates are disposed within the insulating cavity, wherein each agglomerate of the plurality of silica-based agglomerates includes silica-based powder insulation material that is water-densified and is at least substantially free of a material binder. A secondary insulation material is disposed within interstitial spaces defined between the plurality of silica-based agglomerates, wherein the plurality of silica-based agglomerates defines an interior structure that resists inward compressive forces exerted as a result of the at least partial vacuum defined within the insulating cavity.
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公开(公告)号：US20210180738A1
公开(公告)日：2021-06-17
申请号：US16758605
申请日：2017-12-18
Applicant: WHIRLPOOL CORPORATION
Inventor： Ashish Nigam , Devidas B. Raskar
IPC: F16L59/065 , F25D23/06
Abstract: The disclosure provides for a method for preparing a vacuum insulated panel. The method comprises forming an internal cavity between a liner and a wrapper and preparing filler material to be disposed in the internal cavity. The filler material comprises a first part and a second part. Preparing the filler material comprises treating a surface of the first part, wherein the treating prepares the surface to receive a coating comprising a first charge. The preparing further comprises coating the surface of the first part with a chemical comprising a first charge. The coating forms a first surface charge on the surface of the first part. The method further comprises mixing the first part with the second part forming the filler material. The second part comprises a material having a second surface charge opposite the first surface charge.
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公开(公告)号：US12163728B2
公开(公告)日：2024-12-10
申请号：US18342830
申请日：2023-06-28
Applicant: WHIRLPOOL CORPORATION
Inventor： Ashish Nigam , Shayta Roy
IPC: F25D23/06 , C04B14/18 , C04B14/24 , C04B103/56 , F16L59/02
Abstract: An appliance cabinet includes a structural envelope having an exterior surface and an interior surface that defines an insulating cavity, wherein the insulating cavity defines an at least partial vacuum. A plurality of silica-based agglomerates are disposed within the insulating cavity, wherein each agglomerate of the plurality of silica-based agglomerates includes silica-based powder insulation material that is water-densified and is at least substantially free of a material binder. A secondary insulation material is disposed within interstitial spaces defined between the plurality of silica-based agglomerates, wherein the plurality of silica-based agglomerates defines an interior structure that resists inward compressive forces exerted as a result of the at least partial vacuum defined within the insulating cavity.
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公开(公告)号：US11828402B2
公开(公告)日：2023-11-28
申请号：US17876024
申请日：2022-07-28
Applicant: WHIRLPOOL CORPORATION
Inventor： Abhay Naik , Ashish Nigam
IPC: F16L59/065 , F25D23/06 , F26B5/04
CPC classification number: F16L59/065 , F25D23/062 , B32B2307/304 , B32B2509/10 , F25D23/066 , F25D2201/1262 , F25D2201/14 , F25D2323/021 , F26B5/04
Abstract: An auger feeder includes a hopper having an inner hopper wall and an outer hopper wall where the inner hopper wall includes an air permeable surface. A space is positioned between the inner and outer hopper walls. A heater is coupled to an outside edge of the inner hopper wall or a n outside edge of the outer hopper wall while a feed screw is positioned along an inside edge of the inner hopper wall. The auger feeder additionally includes an evacuator coupled to a vacuum port that is positioned in the outer hopper wall. The auger feeder also includes an aperture exit positioned at a bottom of the inner and outer hopper walls.
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Patent Agency Ranking
公开(公告)号：US11655933B2
公开(公告)日：2023-05-23
申请号：US17550351
申请日：2021-12-14
Applicant: WHIRLPOOL CORPORATION
Inventor： Ashish Nigam , Devidas B. Raskar
IPC: F16L59/065 , F25D23/06
CPC classification number: F16L59/065 , F25D23/063 , F25D23/066 , F25D2201/14
Abstract: A method for preparing a vacuum insulated panel includes forming an internal cavity between a liner and a wrapper and preparing a filler material to be disposed in the internal cavity. The filler material includes a first part and a second part and is prepared by treating a surface of the first part. A coating is applied to the surface of the first part with a chemical having a first charge. The coating forms a first surface charge on the surface of the first part. The method further includes mixing the first part with the second part forming the filler material. The second part includes a material having a second surface charge opposite the first surface charge.
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公开(公告)号：US20220161181A1
公开(公告)日：2022-05-26
申请号：US17592165
申请日：2022-02-03
Applicant: WHIRLPOOL CORPORATION
Inventor： Gustavo Frattini , Ashish Nigam
Abstract: A vacuum insulated compartment includes an outer wrapper and an inner liner that is sealed to the outer wrapper. A cavity is defined therebetween. The cavity includes a negative pressure. An insulation material is disposed in the cavity. A getter assembly is disposed in the cavity and includes a primary getter material that is deposited on a plate. A cover layer is deposited over the primary getter material on the plate. A vessel is nested within the primary getter material. A secondary getter material is disposed within the vessel. A protective enclosure is disposed around the getter assembly.
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公开(公告)号：US20240271860A1
公开(公告)日：2024-08-15
申请号：US18646157
申请日：2024-04-25
Applicant: WHIRLPOOL CORPORATION
Inventor： Gustavo Frattini , Anna Jedralski , Ashish Nigam , Subrata Shannigrahi
CPC classification number: F25D23/064 , B29B9/16 , F25D2201/12 , F25D2201/14
Abstract: A filling system for a vacuum insulated structure includes a powder processor configured to load an internal cavity of the vacuum insulated structure with a heated and at least partially degassed vacuum insulation material. The powder processor includes a hopper with inner and outer hopper walls. The inner hopper wall includes an air permeable surface. A heater is positioned in a space defined between the inner and outer hopper walls. A feed screw is positioned along an inside edge of the inner hopper wall. A vacuum port is positioned on the outer hopper wall. An aperture exit is positioned at a bottom of the hopper. At least one evacuator is coupled to the vacuum port of the powder processor. The at least one evacuator is configured to couple to a vacuum port of the vacuum insulated structure and apply a vacuum to the internal cavity of the vacuum insulated structure.
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公开(公告)号：US11971209B2
公开(公告)日：2024-04-30
申请号：US17272695
申请日：2018-09-05
Applicant: WHIRLPOOL CORPORATION
Inventor： Gustavo Frattini , Anna Jedralski , Ashish Nigam , Subrata Shannigrahi
CPC classification number: F25D23/064 , B29B9/16 , F25D2201/12 , F25D2201/14
Abstract: A filling system for a vacuum insulated structure is provided having a powder processor including a hopper having an inner hopper wall and an outer hopper wall. The filling system also includes a vacuum insulated structure having a liner positioned inside a wrapper, a trim breaker coupling an outer liner edge and an outer wrapper edge to form a shell defining an internal cavity with at least one gas permeable feature positioned in the internal cavity configured to help apply a vacuum. A loading port is positioned on a surface of the shell. The powder processor loads the shell with a heated and at least partially degassed vacuum insulation material through the loading port while a vacuum is applied to the shell through the at least one gas permeable feature.
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公开(公告)号：US20220099238A1
公开(公告)日：2022-03-31
申请号：US17550351
申请日：2021-12-14
Applicant: WHIRLPOOL CORPORATION
Inventor： Ashish Nigam , Devidas B. Raskar
IPC: F16L59/065 , F25D23/06
Abstract: A method for preparing a vacuum insulated panel includes forming an internal cavity between a liner and a wrapper and preparing a filler material to be disposed in the internal cavity. The filler material includes a first part and a second part and is prepared by treating a surface of the first part. A coating is applied to the surface of the first part with a chemical having a first charge. The coating forms a first surface charge on the surface of the first part. The method further includes mixing the first part with the second part forming the filler material. The second part includes a material having a second surface charge opposite the first surface charge.
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