JPS6339543A - Gas generator - Google Patents

Abstract

PURPOSE:To control an amount of gas evolved and generation period readily, by arranging a great number of microcapsules containing a gas generating agent which is reacted with a specific gas component and evolves a desired gas on a synthetic resin film. CONSTITUTION:Microcapsules having structure wherein a gas generating agent which is reacted with a specific gas component to evolve a desired gas is coated with a covering material 10 having permeability to a specific gas component are arranged between an outer coating film and a permeable film, etc., fixed by an adhesive, etc., and attached to an inner peripheral face of a container. A reaction rate and an amount of reaction are changed by varying material of the capsule, film thickness l1 and diameter D1 thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is applicable to storage containers for fresh foods such as vegetables, which generate oxygen gas, or so-called 11! The present invention relates to a gas generator, such as an A-ken gas generator, which is suitably used in fields that require the supply of oxygen, such as masks.

Conventional technology Generally speaking, when preserving fresh foods such as vegetables,
Since the supply source for sustaining its life is in a state of depletion, various measures have been taken to maintain the state at the time of harvest. For example, CA (Control
lled ALmospl+ere) storage method is one of the methods. The CAJi'i method is a method in which a relatively large amount of carbon dioxide and a small amount of P! ! This is a method of storing fresh foods such as vegetables in a container filled with raw material. According to this method, it is possible to suppress the respiratory effects that degrade the quality of fresh foods, and also to some extent prevent the evaporation of water.

#S10 is a diagram for explaining the conventional CA storage method. Vegetables 2 are stored in a sealed container 1, and activated carbon 3 is attached to the inner surface of the container 1 to absorb all the hormones and ethylene gas that deteriorate the quality of the plants. Bamboo and other plants have a respiration function that absorbs oxygen and releases carbon dioxide.

Therefore, when the vegetables 2 are stored in the container 1 and smuggled, the respiration effect can be suppressed by injecting a large amount of carbon dioxide and a small amount of oxygen, as described above. Therefore, quality deterioration can be prevented.

Problems to be Solved by the Invention In such a configuration, for example, if the vegetables 2 have absorbed all the small amount of oxygen initially sealed in the container 1,
Vegetable 2 is no longer capable of performing respiratory functions, so
Its quality deteriorates rapidly.

Therefore, it becomes difficult to preserve vegetables 2 for a long period of time while suppressing respiratory effects. In order to solve the problem described in Section 1, it is sufficient to supply a desired amount of ffi elements into the container 1.However, as a method for generating oxygen gas for this purpose, conventional methods include methods using oxygen cylinders, chemicals, etc. A method of temporarily generating oxygen was used. If these means are used, the device will be large and its operation will be complicated.

In addition, the same applies to animals in general, including humans, with regard to respiration that requires the supply of oxygen. For example, during times of illness or exercise, air with a predetermined amount of oxygen gas content is higher than that of ordinary fire. By inhaling
Body, 'T! It is known to be effective in recovering from 4.

Even in such cases, the only way to generate a large amount of oxygen is to use an acid cylinder as described above.

The objective of the present invention is to provide a large generation V device which is simple in construction and allows easy control of the amount and duration of gas generation.

Means for Solving Problem α The present invention provides a gas generating agent that reacts with a specific gas component to generate a predetermined type of gas, and coats the gas generating agent with a coating through which the specific gas component can pass. This gas generating device is characterized in that the microcapsules are formed into microcapsules, and a large number of the microcapsules are arranged on a layer film for synthesis.

Function According to the present invention, a covering material that covers the gas generating agent,
By arbitrarily selecting the thickness and diameter of the microcapsules, the degree of contact between the gas generating agent and the specific gas component can be arbitrarily changed.

Therefore, by arbitrarily selecting the above-mentioned conditions, it is possible to generate the predetermined 4Ill neck gas in a desired amount and obtain a desired gas generation interval.

Furthermore, if a porous material is selected for the covering, the above-mentioned effect can be achieved by arbitrarily selecting the diameter, number, and density of the pores.

Furthermore, by arranging a large number of microcapsules on a synthetic resin, the gas-generating crli of the present invention is formed in the form of a film, and the usability of the microcapsules as a gas-generating means is greatly expanded.

Embodiment FIG. 1 is a cross-sectional view of an oxygen gas generating film 5 of a gas generator according to an embodiment of the present invention. Oxygen gas generating film 5 is available for free! It consists of an L film 6, a ventilation film 7, and a large number of, for example, spherical microcapsules 9 containing an oxygen gas generating agent to be described later, and the large number of microcapsules 9 are arranged between the exterior film 6 and the first ventilation film 7. and are bonded to each other by abrasion.

The outer VC film 6 is made of, for example, a plastic film coated with vinylidene chloride, etc., and has the property of not allowing various gases to pass through. The ventilation film 7 is made of a semipermeable membrane such as cellophane, and is made of a material such as a semipermeable membrane such as cellophane, which prevents the passage of various gases, such as oxygen molecules and water vapor. It has great breathability, allowing water to pass through.

Therefore, the a-element gas generating film 5 has a structure in which one side (the exterior film 6 side) has gas barrier properties and the other side (the ventilation film 7 side) has air permeability.

FIG. 2 is a cross-sectional view of the microcapsule 9.

The microcapsule 9 contains the oxygen gas generating agent 8 in the capsule 1.
The material forming the capsule 10, which has a structure covered by 0, must not react with the contents, that is, the oxygen gas generating agent 8, and must not be inadvertently eluted, for example, be water-soluble. is selected. For example, cellulose acetate may be used.

Further, as the oxygen generating agent 8, for example, finely divided potassium superoxide KO2 is selected.

The microcapsules 9 having such a configuration can be formed into capsules 10 by, for example, coming into contact with water vapor in the atmosphere.
gradually dissolves, and the internal components, such as potassium superoxide KO,
Again, upon contact with this water vapor, oxygen gas is generated. This process can be expressed as a chemical reaction equation as follows.

In addition, potassium hydroxide KO generated by this reaction
H and R2CO2 dioxide in the atmosphere undergo a reaction as shown by the following chemical reaction formula.

2KOII+CO□→K1C0,+tt,o...
(2) Although the above are the main reactions, the reaction shown by the following chemical reaction formula is also taking place at the same time, albeit to a small extent.

The reaction rate and reaction 1 in the above reaction are determined by the amount of atmosphere that comes into contact with the oxygen gas generation M8. In other words, the material and film thickness of the capsule 10! 1 and its diameter D1, the reaction rate and the amount of reaction change correspondingly. Therefore, by arbitrarily selecting the above-mentioned conditions for the capsule 10, the time and amount of oxygen gas generation can be controlled.

FIG. 3 is a sectional view of the plant growing device 11 as an example of application of this embodiment. The Tr forming device 11 has an open box-shaped container 12 made of a transparent material such as vinyl chloride, and
The container 12 is provided with a film-like lid 13 made of plastic film coated with vinylidene chloride or the like, and specially designed to prevent various gases from passing through. The R container 12 has a rectangular plate-shaped bottom 14 and a bottom g1.
4 is erected from the periphery.

A floor member 19 made of a fibrous or porous material, such as rock wool or a so-called sponge, is arranged on the bottom 14 in the container 12. This floor member 1
9 is impregnated with water for growing plants 20. In addition, one floor member may contain 20 plants, such as daikon radish, for example.
is subjected to IIPR and YTr&.

Inside the container 12, an AIY gas generating agent pack 21 and an ethylene gas absorbent pack 22 are fixed, for example, over the entire circumference of the inner peripheral surface of the container 12, having a shape that follows the shape of the inner peripheral surface. Ru. This oxygen gas generating agent pack 21 contains a large number of the aforementioned microcapsules 9. Note that water vapor for generating oxygen gas is generated based on evaporation of water impregnated in the floor member 19, transpiration of the plants 20, or the like.

The ethylene gas absorbent pack 22 is constructed by storing an ethylene gas absorbent such as activated carbon or artificial zeolide in a breathable film. This ethylene gas absorbent pack 22 also absorbs carbon dioxide gas generated depending on the type of plant grown by the growing device 11.

The cultivation device i11, which is an application example of the present embodiment, has the above-mentioned configuration and is based on the so-called water cultivation technique.

Furthermore, as described above, inside the translucent container 12,
When exposed to sunlight, the plant 10 performs photosynthesis and produces W! Although ``&'' is greatly affected, in this photosynthetic process, ethylene gas in the air is absorbed and oxygen gas is also generated.

Therefore, by reducing the 115 degrees of ethylene gas in t, 312 and increasing the oxygen gas concentration, the photosynthetic action of the plants 20 is suppressed, and their growth is suppressed. on the other hand,
The plants 20 are replenished with the water impregnated in the floor member 19, so that the plants 20 can be placed on, for example, a distribution mechanism while maintaining the desired growth state and suppressing further growth.

FIG. 4 shows the plant repair arrangement rr1 of the second application example of this embodiment.
FIG. 11a is a cross-sectional view of FIG. This application example is similar to the first application example shown in FIG. 3, and hereinafter, parts with the same configuration will be given the same reference numerals. This applied example is characterized in that the W1 gas generating film 5 shown in the first figure is used to configure the W1 gas generating film 113a without using the oxygen gas generating agent pack 21 in the first applied example.

′;! In L13a, an outer film 6 is arranged on the outer side of the container 12, and a ventilation film 7 is arranged on the inner side of the container 12.
It is placed so that it faces. Therefore, by attaching the lid 13a having such a configuration to the container 12, the same effects as in the first application example can be obtained. That is, water vapor from water impregnated into one floor member passes through the ventilation film 7 of '513A and dissolves the capsules 10 of the microcapsules 9 stored therein, and the water vapor reaches 1L! 2 element reacts with the emitted gas 8 to form Pl! The cables generate scratches. This oxygen gas passes through the ventilation film 7 and is given to the plants 20 to suppress their growth.

Figure 5 shows the plant growing device 1 of the third application example of a 1m example of real fruit.
It is a sectional view of 1b. This application example is similar to the second application example, and is characterized in that the lid 13b lacks ('!i). The outer VC film 6 is made of the same material as the container 12, that is, vinyl chloride, and has a IIη configuration in which J7 is chosen to be equal to the thickness of the container 12.
3b will have the same hardness as the container 12, making handling convenient. It goes without saying that it also has the effect of generating oxygen gas.

In addition, in the second and third application examples, the oxygen gas generating means is
There is an advantage that the structure is simpler than that of the first application example by incorporating it in a and 13b.

Figure ttsG is a side view showing the state in which the oxygen mask 25 according to the second embodiment of the present invention is attached. The oxygen mask 25 consists of a facepiece 2G and a main body 27, an exhalation hole (not shown) is formed in the prefix 2G, and a check valve is provided in the exhalation hole.

FIG. 7 is a sectional view taken along the section line ■--■ in FIG. 6. The main body 27 has a suction fr! that communicates with the face contact body 26.
28, and a cylindrical body portion 29 integrally formed with the suction pipe 28.
Inside the body g29, an oxygen gas generating means 30 is provided.
and l! ! ! Two disk-shaped filters 31 and 32 are arranged at both ends in the vertical direction in FIG. 7 of the raw gas generation stage 30.
is stored.

The oxygen gas generating means 30 has the same configuration as the oxygen gas generating film 5 shown in the first diagram, and includes an oxygen γ gas generating film 5 in which ventilation filters 7 are arranged on both sides of the microcapsules 9.
c and a storage bag 33 for storing the oxygen gas generating film 5c, and the storage bag 33 is made of a breathable material such as a mesh material. The oxygen gas generating film 5C having the above-described configuration is laminated inside the storage bag 33,
It will be stored.

A thread 34 is provided on the inner circumferential surface of the end of the body 29 opposite to the suction ff28, and this thread 34 has an oxygen gas generating means 30 housed in the body 29 and two filters 3.
The cap 35 is screwed together so that 1.32 does not come out. Moreover, rt, 37 is attached to this cap 35.

Pt58 is a bottom view of FIG. 7 with the cap 35 and 137 removed, and FIG. 9 is a perspective view of the lid 37. The cap 35 has a substantially cylindrical shape, and a thread 38 is formed on the outer periphery of the cap 35 .

From the inner circumferential surface of the end of the cap 35 in the direction in which it is screwed, two ribs 136 extend in the opposite directions.

Further, at the end of the inner peripheral surface of the cap 35 in the direction opposite to where the lip 3G is arranged, a locking groove 39 for locking the ¥i37 is formed over the entire circumference.

5 37 consists of a shaft part 40 and 7 run parts 41, and the pongee 1
1140 is formed with a locking protrusion 42 that protrudes radially outward over the entire circumference. When attaching the lid 37 to the cap 35, this locking protrusion 42 is locked and fixed to the three locking grooves of the cap 35. In this state, the end surface 4 (
]a is in close contact with the opposite end of the suction pipe 28 of the body 29 and the cap 35, thereby preventing air from entering and exiting. A lid (not shown) similar to the M3'7 is also provided on the face contact body 2G side, and is attached to the face contact body 2G with the same configuration as the lid 37.

When the oxygen mask 25 having such a configuration is used, the two lids are removed. As a result, air flows into the oxygen gas generating means 30 through the filter 32, and the water vapor in the air reacts with the oxygen gas generating device 618 in the oxygen gas generating film 5c to generate oxygen. Here, a person passes through the face contact body 26, 6. When one pump of oxygen is pumped, the generated oxygen is sent to the person's mouth along with the air through the filter 31 through the suction pipe 28. In addition, since the exhalation hole of the face contact body 26 is provided with a reverse valve, the exhaled air is passed through the inhalation pipe 2.
It does not flow into 3.

In this way, by using the P12 bare mask 25, it is possible to inhale air with a predetermined higher oxygen gas content than normal large air. In addition, in the oxygen gas generation means 30, as described above, the capsules 10 constituting the microcapsules 9 in the oxygen gas generation film 5C are
By changing the material, film thickness, diameter, etc., it is possible to obtain the desired oxygen gas generation (1) and oxygen gas generation period.

In this embodiment, cellulose acetate was selected as the material for the capsule 10, but it may also be made of gelatin or wafer, for example.

Alternatively, a porous t-covering material that is not water-insoluble and is made of, for example, vinyl acetate alcohol may be selected. In this case, by selecting the number and size of the holes, the desired amount and period of oxygen gas generation can be obtained.

Further, in this example, potassium oxide was selected as the oxygen gas generating agent 8, but for example, calcium hydroxide,
According to the present invention, the desired amount of gas generation of a predetermined type of gas can be achieved by changing the conditions for covering the limbs with the gas generating agent. and the gas generation period can be obtained. Therefore, according to the present invention, the gas generation Vcr! It becomes possible to control the amount of gas generation and the period of gas generation in accordance with the usage of No. 1. In addition, the microcapsules are placed on a synthetic resin film, making them convenient to handle.
Furthermore, the range of use is greatly expanded.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a P11 accumulation film 5 according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of a microcapsule 9, and FIG. FIG. 4 is a sectional view of the plant growth device 11a of the Pt52 application example of the first embodiment, and FIG. 5 is the plant growth device 11a of the third application example of the first embodiment. 1111, FIG. 6 is a side view showing the attached state of the oxygen mask 25 of the second embodiment of the present invention, FIG. 7 is a sectional view taken from the section line ■-■ in FIG. The figures are a bottom view of FIG. 7 with the lid 37 removed from the cap 35, FIG. 9 is a perspective view of the lid 37, and FIG. 10 is a diagram for explaining the prior art. 5... Oxygen gas generating film, 6... External ¥c film, 7... Ventilation film, 8... Oxygen gas generating agent,
9...Microcapsule, 10...Capsule agent Patent attorney Number of strokes Keiichi Figure 1 Figure 3 Figure 4 Figure 5V n Figure 7

Claims (1)

[Scope of Claims] A gas generating agent that reacts with a specific gas component to generate a predetermined type of gas is coated with a coating through which the specific gas component can pass, forming a large number of microcapsules. A gas generating device characterized in that the microcapsules described above are arranged on a synthetic resin film.