CN101993683A - Cold storage agents for extending functions of refrigerator and freezer - Google Patents

Abstract

The invention relates to cold storage agents for extending functions of a refrigerator and a freezer. One cold storage agent is composed of stearate, surfactant and water, and the other cold storage agent contains the stearate, the surfactant, ammonia chloride and water. The two cold storage agents can provide different temperature ranges under low temperature, and can be singly used or co-used; and when in co-use, the time for maintaining the deep low temperature of the melting points of the two cold storage agents can be greatly prolonged. The cold storage agents can be used for food and beverage during traveling and vaccine transportation, have large cold-storage amount, stable properties, no toxicity, insipidity, low cost and low price and is convenient for reuse, the cold-solid expansion is lowered and the preparation method is simple.

Description

Refrigerator ice box function is extended the cold storage agent of use outward

Technical field:

The present invention relates to refrigerator ice box function and extend the cold storage agent of use outward.

Background technology:

Along with improving constantly of China's people's lives, refrigerator, ice box have entered huge numbers of families.But refrigerator and ice box all can not be taken to the open air use.

In travelling for fresh-keeping foodstuff or health and epidemic prevention department for the transportation vaccine of working, need the domestic portable mini-bar, health and epidemic prevention department adopts small-sized low temperature carrying case, all need cold storage agent in these devices, the temperature range of the low-temperature receiver of the needed small-sized low temperature environments of department such as general civilian and health and epidemic prevention is greatly between 0 ℃ to-20 ℃.

Chinese patent literature CN1063302A sets up body structure with adequately expanded polyvinyl alcohol in water and borax crosslinking reaction, absorbs large quantity of moisture then, expand into runny gel, as cold storage agent.

The problem that above-mentioned cold storage agent exists is that the price of manufacturing process complexity, cost height, product is expensive, the bad acceptance of user.

The report (seeing Chinese patent literature CN106117990A) of making cold storage agent with the aqueous solution of Repone K is arranged in Chinese patent literature, its advantage is that preparation is convenient, but needed raw material Repone K price is higher, and most importantly temperature can only reach-12 ℃, can not reach lower temperature.

Summary of the invention:

The objective of the invention is to be to study and make the temperature of solidification with fixed or narrow range or the cold storage agent of temperature of fusion, thoroughly overcome the problem of above-mentioned existence.Cold storage agent of the present invention can provide different cryogenic temperature scopes, therefore adopt this cold storage agent can divide the function of refrigerator, ice box different low humidity temperature sections to stretch out, make the scope that is provided conform to the demand of departments such as general civilian and health and epidemic prevention as low-temperature receiver.After in the different low temperature icehouses of refrigerator, ice box, freezing several different cold storage agent of the present invention admittedly respectively, use separately or be used, can be used as " low-temperature receiver " of different cryogenic small portable cold insulation devices, when being used, can prolong the cryogenic cold insulation time that relates to, another object of the present invention is that to develop cold storage capacity big, chemistry and physical properties are stable, the cold storage agent that again can be safely repeatedly uses repeatedly, and make its compounding process simple, easily row, cost is low, product price is cheap, the user is satisfied.

The present invention learns with thermal conduction study, dissolving and thermodynamic (al) " balancing each other " relevant principle is a foundation, developed similar and the cold storage agent that concentration range is different of several compositions, during selected one suitable concentration, they can have temperature of solidification definite or close limit and melting temperature.For example can be respectively 0 ℃ to-0.5 ℃ ,-13 ℃ to-14 ℃ ,-16 ℃ to-17 ℃, between 0 ℃ to-20 ℃, and can make things convenient for the solid cold-storage of frozen ground with general refrigerator, ice box respectively.

A kind of cold storage agent of the present invention, by the stearate of 0.0002%-1.0% (weight percentage), the tensio-active agent of 0.0004%-2.0% (weight percentage), all the other water is formed, and this cold storage agent is called for short XL1 series.

Another kind of cold storage agent of the present invention, by the stearate that contains 0.0002% (weight percentage), the tensio-active agent of 0.004%-2.0% (weight percentage), the ammonia chloride of 10%-29% (weight percentage) or sodium-chlor and water, this cold storage agent is called for short XL2 series.

For the zero pour (or fusing point) that makes cold storage agent more decreases, be reduced to about-18 ℃, be good in cold storage agent XL2, to add 5%-28% (weight percentage) saltpetre, thereby form cold storage agent XL3 series.A kind of cold storage agent in XL1 series is with the hard hydrochlorate by 0.015%-0.7% (weight percentage), and all the other are consisted of good by water.Cold storage agent in XL2 series is again containing the hard hydrochlorate of 0.015%-0.7% (weight percentage), the tensio-active agent of 0.015%-1% (weight percentage), and the ammonia chloride of 10-27.5% (weight percentage) or sodium-chlor and water are good.

Used stearate is that calcium stearate, aluminum stearate, Zinic stearas, Magnesium Stearate are wherein a kind of, again with Magnesium Stearate for better.

Used surperficial dissolubility agent can be an anion surfactant, cationic surfactant, wherein a kind of of wherein a kind of or washing powder of nonionic surface active agent, dish detergent, aniorfic surfactant is wherein a kind of of dodecylbenzene sulphur sodium, Witco 1298 Soft Acid ammonium, dinaphthyl methane, and cationic surfactant is that cetyl trimethylammonium bromide, cetyl trimethyl ammonia chloride, dodecyl pyridine hydrochloride are wherein a kind of; Nonionic surface active agent is that aliphatic acid polyethenoxy ether, fatty alcohol-polyoxyethylene ether, triglycerin monostearate are wherein a kind of, this inexpensive nontoxic finely powdered thing suspends in water equably, its a large amount of micro mists freeze at water and disturb the regularly arranged of water molecules in the crystal when solid, the frost heave degree is descended, thereby exempt the damage of cold storage agent to container, help repeatedly using repeatedly, the function of tensio-active agent be make stearate (as Magnesium Stearate) can be in water stable suspersion.

Specific embodiments:

The invention will be further described below in conjunction with embodiment

Embodiment 1

Cold storage agent in this enforcement is a kind of cold storage agent in the XL1 series, it puts into 2000 milliliters container simultaneously by the Sodium dodecylbenzene sulfonate of the Magnesium Stearate, 0.10% (weight percentage) of 0.03% (weight percentage), add 998.7 gram tap water again, be stirred to the semi-transparent liquid of the uniform oyster white of formation with agitator, experiment shows this cold storage agent after freezing admittedly about-10%, and the volumetric expansion amount that the volume expansion ratio pure water is frozen into water descends about 20%; Under 25 ℃ to 29 ℃ conditions of temperature, frozen that to put into 3500 gram initial temperature in the small-sized sealable double-layer plastic case that solid XL1 makes low-temperature receiver be 6 ℃ beverage filling 550 grams, can make beverage keep refrigerant mouthful below 12 ℃ for up to 17 hours, this cold storage agent is when dissolving for-0.5 ℃ to 0 ℃, and heat of fusion is 332kj/kg.

Embodiment 2

Cold storage agent in an embodiment is the cold storage agent in the XL2 series, and it contains the hard magnesium of 0.03% (weight percentage), the Sodium dodecylbenzene sulfonate of 0.10% (weight percentage) (tensio-active agent), the ammonia chloride of 19% (weight percentage) and water.

With embodiment 1 described method, with 0.3 gram Magnesium Stearate, 1 gram Sodium dodecylbenzene sulfonate and 808.7 gram tap water are made into the XL1 cold storage agent.

190 gram ammonium chlorides are placed 2000 milliliters container cup, the XL1 cold storage agent for preparing is joined in 2000 milliliters the container cup that fills 190 gram ammonium chlorides, the limit adds XL1 liquid, and (stirring as the electricity consumption agitator) stirred on the limit, is stirred to ammonium chloride and dissolves fully.

Transportation for vaccine, the low temperature environment that needs-20 ℃ to 0 ℃ or-20 ℃ to 8 ℃, experiment shows, totally 100 of the vaccines of 2 cubic centimetres every vial encapsulation, 720 gram XL2 cold storage agent with plastics square vase splendid attire freeze solid back as main cryogen, place the portable suitcase of double-layer plastic to carry outside jointly, are under 22 ℃ the condition at temperature, keeping-14 ℃ to 0 ℃ time in the case is 10 hours, keeps-14 ℃ to 8 ℃ time to be about 23 hours.Experimental result shows that when this XL2 cold storage agent dissolved, heat of fusion was 303kj/kg in-14 ℃ to-13 ℃ scope.

Embodiment 3

Cold storage agent in the present embodiment is the cold storage agent in the XL3 series, it contains the Magnesium Stearate of 0.03% (weight percentage), the Sodium dodecylbenzene sulfonate of 0.1% (weight percentage) and tensio-active agent, the ammonium chloride of 16% (weight percentage), the SODIUMNITRATE of 8% (weight percentage) and 758.7 gram tap water are mixed with the XL1 cold storage agent.

Again 160 gram ammonium chlorides and 80 gram saltpetre are placed 2000 milliliters container cup, the XL1 cold storage agent for preparing joins limit adding XL1 cold storage agent in 2000 milliliters the container cup that fills 180 gram ammonium chlorides and 80 gram saltpetre, stir on the limit, be stirred to ammonium chloride and saltpetre dissolves fully, experiment records this XL3 cold storage agent when dissolving for-17 ℃ to-18 ℃, and heat of fusion is 298kj/kg.

Claims (7)

1. a cold storage agent is characterized in that, by the stearate of 0.0002%-1.0% (weight percentage), and the tensio-active agent of 0.0004%-2.0% (weight percentage), all the other are formed by water.

2. according to a kind of cold storage agent of claim 1, it is characterized in that said stearate is a Magnesium Stearate.

3. according to the cold storage agent of claim 1, it is characterized in that said tensio-active agent is an aniorfic surfactant, wherein a kind of of cationic surfactant, nonionic surface active agent, a kind of or washing powder wherein, dish detergent.

4. according to a kind of cold storage agent of claim 3, it is characterized in that, said aniorfic surfactant is a Sodium dodecylbenzene sulfonate, the Witco 1298 Soft Acid ammonium, wherein a kind of of dinaphthyl methane-disulfonic acid sodium, aniorfic surfactant is a cetyl trimethylammonium bromide, palmityl trimethyl ammonium chloride, wherein a kind of of dodecyl pyridine hydrochloric acid, nonionic surface active agent is wherein a kind of of fatty alcohol-polyoxyethylene ether, triglycerin monostearate.

5. another kind of cold storage agent is characterized in that, contains the stearate of 0.0002%-1.0% (weight percentage), the tensio-active agent of 0.0004%-2.0% (weight percentage), the ammonium chloride of 1%-2% (weight percentage) or sodium-chlor and water.

6. according to the another kind of cold storage agent of claim 5, it is characterized in that said stearate is a hard magnesium.

7. according to the another kind of cold storage agent of claim 5 or 6, it is characterized in that, also contain the saltpetre of 5%-28% (weight percentage).