Latent heat storage material and a method of manufacturing same, and cold storage pack, logistic packaging container, human body cooling tool, refrigerator, and food cooling tool all containing same
US-2021214599-A1 · Jul 15, 2021 · US
Latent heat storage material, cold storage tool, distribution packing container, and cold storage tool for food
US12404436B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12404436-B2 |
| Application number | US-202118265152-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 29, 2021 |
| Priority date | Dec 4, 2020 |
| Publication date | Sep 2, 2025 |
| Grant date | Sep 2, 2025 |
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Abstract
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Provided is a latent heat storage material capable of keeping an object to be refrigerated, such as frozen food or ice cream, cold at a temperature of −20° C. or lower for a long period of time, and of reducing power consumption required at a time of solidification. The latent heat storage material contains 5 to 21 parts by weight of ammonium chloride, 2 to 13 parts by weight of potassium chloride, 5 to 23 parts by weight of urea, and 43 to 88 parts by weight of water. The total of the ammonium chloride, the potassium chloride, the urea, and the water is 100 parts by weight, and the latent heat storage material has a main melting point in a range from −20° C. to −23° C.
First claim
Opening claim text (preview).
The invention claimed is: 1. A latent heat storage material, comprising: 5 to 21 parts by weight of ammonium chloride; 2 to 13 parts by weight of potassium chloride; 5 to 23 parts by weight of urea; and 43 to 88 parts by weight of water, wherein a total of the ammonium chloride, the potassium chloride, the urea, and the water is 100 parts by weight, and the latent heat storage material has a main melting point in a range from −20° C. to −23° C. 2. The latent heat storage material according to claim 1 , comprising: 12 to 15 parts by weight of the ammonium chloride; 5 to 8 parts by weight of the potassium chloride; 9 to 13 parts by weight of the urea, and 64 to 74 parts by weight of the water. 3. The latent heat storage material according to claim 1 , further comprising: a supercooling inhibitor. 4. The latent heat storage material according to claim 3 , wherein the supercooling inhibitor contains at least one selected from the group consisting of ammonium aluminum sulfate dodecahydrate, potassium aluminum sulfate dodecahydrate, calcium carbonate, aluminum oxide, and activated carbon. 5. A cold storage tool, comprising: the latent heat storage material according to claim 1 ; and a cold storage tool main body configured to store the latent heat storage material in a liquid-tight manner. 6. The cold storage tool according to claim 5 , wherein the cold storage tool main body includes a plurality of storage portions and a joint portion, the joint portion joining two adjacent storage portions, to each other, of the plurality of storage portions, and each of the plurality of storage portions stores the latent heat storage material in a liquid-tight manner. 7. A distribution packing container, comprising the cold storage tool according to claim 5 . 8. A cold storage tool for food, comprising the cold storage tool according to claim 5 .
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Classifications
Shape of the element · CPC title
portable, i.e. adapted to be carried personally · CPC title
Compositions of cold storage materials · CPC title
Stationary cabinets · CPC title
Thermal energy storage · CPC title
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- What does patent US12404436B2 cover?
- Provided is a latent heat storage material capable of keeping an object to be refrigerated, such as frozen food or ice cream, cold at a temperature of −20° C. or lower for a long period of time, and of reducing power consumption required at a time of solidification. The latent heat storage material contains 5 to 21 parts by weight of ammonium chloride, 2 to 13 parts by weight of potassium chlor…
- Who is the assignee on this patent?
- Sharp Kk
- What technology area does this patent fall under?
- Primary CPC classification C09K5/066. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Sep 02 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).