JPH027543Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is a simple disposable cooling agent that can be used to prevent sleepiness while driving or studying, or to cool affected areas due to sudden fever, sprains, bruises, etc. Regarding Patsuku.

[Conventional technology]

It has long been known that inorganic salts as cryogens cause an endothermic reaction when they chemically react with water.
In order to make use of this to create a disposable coolant pack, a hermetically sealed outer pack container was filled with a cryogen and a water bag.

However, once the water bag is crushed, the chemical reaction between the cryogen and water proceeds rapidly, resulting in a short cooling time.
Moreover, when rapid cooling is required, it is impossible to control the temperature and time in accordance with various purposes, such as maintaining a constant low temperature for a long period of time.

[Problem that the invention attempts to solve]

In order to solve the above-mentioned drawbacks, the present invention consists of a water-permeable bag filled with cryogen and a plurality of water bags placed in a flexible pack container, and the number of water bags to be crushed as needed. By limiting the cooling temperature and time, it is possible to freely control the temperature and time, and by changing the water permeability of the water permeable bag, it is possible to provide a coolant pack that can extend the cooling duration.

[Means for solving problems]

The coolant pack of the present invention has a structure in which a water-permeable cryogen bag filled with a cryogen made of inorganic salts and a continuous water bag including a plurality of breakable water bags are placed in a sealed outer package container. It belongs to.

[Effect]

By crushing the water bladder, water and cryogen mix to cause an endothermic chemical reaction, which removes heat from the surrounding area and produces a cooling effect.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to a specific example shown in the accompanying drawings.

In Figures 1 to 3, two flexible, water-impermeable sheets such as vinyl are stacked one on top of the other,
Inside the airtight outer package container 1 whose four sides are tightly sealed by heat sealing parts 1a, there is a cryogen bag 3 made of water-permeable non-woven fabric and filled with granular cryogen 2;
Two water bags 5a and 5b are made by sealing two pieces of crushable and water-impermeable vinyl 4 with a heat seal part 4a.
A continuous water bag 7 filled with water 6 is placed in the water bags 5a and 5b.

By the way, the chemicals used as cryogens are:
There is ammonium nitrate, but there are also potassium nitrate,
Any material can be used as long as it is a water-added cooling agent that reacts with water, such as sodium nitrate and ammonium chloride.

In addition, the materials for the sealed outer packaging container 1 include:
Use a pressure-resistant material such as nylon or polyethylene to prevent chemicals from leaking easily during use.

Furthermore, as the material constituting the continuous water bags 7, a material that is weak against impact and has pressure resistance, such as high-density polyethylene or stretched polypropylene, is used.
As for the size of the water bags a and 5b, as shown in FIG. , 5b from being crushed.

Next, an example of use of the above embodiment will be described.

(Rapid Cooling) When rapidly cooling an affected area due to sprains, bruises, etc., hold the outer pack container 1 and hit the entire body strongly to cool the two water bags 5a and 5b of the internal continuous water bag 7. Crush. As a result, the water 6 penetrates the cryogen bag 3 and reacts with the cryogen 2, producing a cooling effect. In Figure 4, the solid line shows the temperature state when 40g of ammonium nitrate is placed in cryogen bag 3 and 15g each in water bags 5a and 5b, totaling 30g of water, is mixed at room temperature of 20℃ and water temperature of 10℃. , the temperature rapidly drops to -4°C in about 5 minutes after crushing the water bags 5a and 5b, and drops to 0°C in about 25 minutes.
becomes.

(Long-term cooling) When you want to cool slowly for a long time, such as when driving a car or when you have a fever, you can do so by crushing one of the water bags 5a and 5b, and then crushing the remaining water bag at an appropriate time. Cooling is performed. This temperature state is the fourth
As shown by the dotted line in the figure, by crushing one of the water bags 5a and 5b, 15g of water 6 penetrates the cryogen bag 3 and reacts with 30g of cryogen 2, and the temperature drops to -1.5 after about 5 minutes.
The temperature drops to ℃. However, because the amount of water 6 is small,
The inside of the cryogen bag 3 becomes saturated and the dissolution reaction stops, and the temperature rises to 5° C. after about 25 minutes. Next, by crushing the remaining water bag at the point marked * in Figure 4, the dissolution reaction between the water and the cryogen starts again, and the temperature drops to -2.5°C after about 30 minutes, and remains at 0°C after about 40 minutes. The following temperature conditions persist.

Figure 5 shows the temperature gradient that changes depending on the coarseness of the nonwoven fabric used for the cryogen bag 3, and
At 20℃ and water temperature of 10℃, the solid line is the experimental result when 40g of ammonium nitrate and 30g of water were directly mixed, and the dotted line is the temperature when mixed with water using mesh #180 in the cryogen bag. The slope and the dashed line show the results using a #250 cryogen bag, and by changing the mesh of cryogen bag 3, the duration of temperature can be changed.

[Effect of idea]

As described above, according to the present invention, a low temperature can be obtained anywhere with the simple operation of tapping the pack, and it can be used in a wide range of applications such as sports, leisure, and first aid for sprains, bruises, etc. There are advantages.

In addition, by crushing all the water bags inside the pack, it is possible to rapidly obtain a low temperature in a short period of time.If necessary, you can crush a part of the water bag and use it by hitting the remaining water bag at an appropriate time. It becomes possible to freely control the temperature and duration according to the purpose.

Furthermore, by changing the mesh of the cryogen bag, the duration of temperature can be changed.
There is also the advantage that manufacturers can create products with various temperature changes.

In the above-mentioned embodiment, two water bags were used, but
It is also possible to have three or more, and the entire coolant pack can be reduced in size by making the material of the continuous water bags pressure-resistant and stacking the continuous water bags and cryogen bags in the pack container. You can also do that.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway front view showing an embodiment of the coolant pack according to the present invention, and Fig. 2 is a -
Fig. 3 is a cross-sectional plan view taken along the - line in Fig. 1, Fig. 4 is a diagram showing the temperature state of the coolant, and Fig. 5 is a diagram showing cooling when using cryogen bags with various water permeability. FIG. 3 is a diagram showing the temperature gradient of the agent. In the figure, 1...Outer packaging container, 1a...Heat sealing part, 2...Cryogen, 3...Cryogen bag, 4...Vinyl, 4a...Heat sealing part, 5a, 5b...
...Water bag, 6...Water, 7...Continuous water bag.

Claims (1)

[Scope of utility model registration request] This coolant pack includes a water-permeable cryogen bag filled with a cryogen made of inorganic salts and a continuous water bag including a plurality of breakable water bags arranged in a sealed outer package.