JP2002323386A - Temperature rise detector, frozen food container utilizing the detector, and temperature rise detecting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a temperature rise detector simply manufacturable at a low cost and capable of easily detecting whether each of frozen items, frozen blood, or the like has so far experienced thawing due to a temperature rise, and to provide a frozen food container utilizing the detector and a temperature rise detecting method. SOLUTION: This temperature rise detector 1 is equipped with a sealing container 2 for sealing a liquid therein, an absorption member 3 for covering the periphery of the container 2, and a housing body 4 for housing these sealing container 2 and absorption member 3. When the liquid is frozen, the container 2 is destructed by an expansion force of the liquid at the time of freezing and such a state is brought about that the liquid can leak out of the container 2. Thereafter, when the liquid is thawed and liquefied due to a temperature rise and absorbed into the absorption member 3, the state of absorption is checked through a transparent part of the housing body 4 to detect that a temperature rise from a frozen state has been experienced. By mounting the detectors on frozen items, it can be easily detected whether or not each of the frozen items has so far experienced thawing due to a temperature rise.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temperature rise detecting device for detecting the frozen state of frozen products such as frozen foods and blood, for example, a frozen food container using the device, and a temperature rise detecting method.

[0002]

BACKGROUND ART In recent years, many frozen foods such as fresh foods such as meat and fish are on the market. Regarding the distribution route of this frozen food, for example, it is common that, for example, a product produced at a factory of a manufacturer is shipped in a frozen state to a wholesaler, wholesaled from the wholesaler to a retailer, and consumers generally purchase from the retailer. .

[0003]

By the way, frozen foods have a value when they are kept frozen, and once thawed, they must be eaten as soon as they are frozen foods. . In addition, if freezing and thawing are repeated, such as freezing the frozen product again after it is thawed, the structure of the food or the like changes, the taste changes, and the product value decreases. Also, in some cases, the corroded material may be frozen, in which case,
It becomes a big problem in food hygiene. However, when a general consumer purchases frozen food, if the frozen food is displayed in a freezing display case or the like, the frozen storage state is believed to be perfect and the purchase is made with confidence. Certainly, if it is displayed in a display case for freezing, it is frozen, but has it been thawed in the past, that is, from the time of manufacture of the frozen food to the time it reaches the consumer? Until then, ordinary consumers do not know. In addition, blood for blood transfusion is also frozen, and even if the temperature rises during transportation or the like, it is not known that the temperature has risen if the blood is frozen again before use.

Conventionally, such recording of the temperature of each frozen food involves recording the temperature of the factory at the manufacturing stage, the temperature of, for example, a refrigerator car at the distribution stage, and the like. There is no indication of the history of decompression and decompression, so it is not limited to ordinary consumers,
Similarly, a wholesaler who purchases from a manufacturer or a retailer who purchases from a wholesaler is not sure. But you have to trust each other to do business. Therefore, there is a demand for the development of an apparatus that can detect whether or not individual frozen products, frozen blood, and the like have been thawed due to a rise in temperature in the past.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a temperature rise detecting device which can easily detect whether or not individual frozen products or frozen blood have been thawed due to a temperature rise in the past, and which can be manufactured simply and inexpensively. It is an object of the present invention to provide a frozen food container and a temperature rise detection method using the device.

[0006]

According to the present invention, there is provided a temperature rise detecting device for detecting a rise in temperature after installation, wherein a pre-colored liquid is frozen to form a solid. The solid material liquid that has been defrosted and liquefied by a rise in temperature is absorbed and colored by the absorbing member that covers the periphery of the solid material, and the temperature changes depending on the state of the absorption coloring change. A temperature rise detection device characterized in that rise can be detected.

[0007] In the present invention as described above, the solid material is formed by freezing a preliminarily colored liquid, and an absorbing member is provided to cover the periphery of the solid material. Is absorbed by the absorbing member. By checking the absorption state, a temperature rise from the production installation state is detected. By mounting the above-mentioned temperature rise detection device on a frozen product, it is possible to easily detect whether or not individual frozen products have been thawed due to a temperature rise in the past, and it is possible to manufacture easily and easily.

The invention according to claim 2 is a temperature rise detecting device for detecting that the temperature has risen from a frozen and frozen state, wherein a sealed container in which a liquid is sealed and a periphery of the sealed container are provided. Absorbing member that covers, while containing the enclosing container and the absorbing member, at least a part is provided with a transparent waterproof container, when the liquid in the enclosing container is frozen, The enclosing container is broken by the expansion force of the liquid, so that the liquid is allowed to leak from the enclosing container. The temperature rise detection device is characterized in that the state is confirmed by a transparent portion of the container and a temperature rise from a frozen state can be detected.

In the present invention, when the liquid enclosed in the enclosure is frozen, the enclosure is destroyed by the expansion force of the liquid at the time of freezing, and the liquid is allowed to leak from the enclosure. You. When the temperature rises and the liquid is thawed and liquefied, the liquid liquid is absorbed by the absorbing member. By confirming the absorption state in the transparent part of the container, the temperature rise from the frozen state is detected. Expansion force when the liquid freezes,
Since the temperature rise from the frozen state can be detected by utilizing the thawing and liquefaction of the liquid, individual temperature rises can be detected by mounting the temperature rise detection device on a container or the like that contains frozen products or frozen blood. It is possible to easily detect whether or not a frozen product or the like has been thawed due to a rise in temperature in the past. In addition, since the liquid can be formed by simply enclosing the liquid in the enclosing container, covering the liquid with the absorbing member, and storing these in the housing, the manufacturing can be performed simply and easily.

In the present invention, it is preferable to use a harmless liquid.
Any kind of liquid, such as water and a coloring liquid, may be used. As the coloring liquid, a solution in which a food coloring agent is dissolved is preferable. Also,
The absorbing member may be any material as long as it can efficiently absorb the liquid and is harmless. For example, absorbent cotton, tissue, soft cloth nonwoven paper, or the like can be used. Furthermore, it is preferable to use a sealed container that is easily broken by the expansion force of the liquid during freezing,
For example, it is conceivable to use a hard plastic or the like. In addition, this temperature rise detection device can be used by being attached to the inside of a bag containing frozen foods, for example, and used by being attached to a container containing fish and shellfish such as frozen tuna, meat, and blood for transfusion. It is also possible. In short, it can be used for all frozen products that need to be kept frozen until a desired time.

According to a third aspect of the present invention, in the temperature rise detecting device according to the second aspect, the liquid is a harmless colored liquid, and the color of the absorbing member is different from the color of the colored liquid. It is characterized by the following. In the present invention, since the liquid is formed of a harmless coloring liquid, even if the coloring liquid adheres to the frozen product for some reason, the frozen product is not affected. Further, since the color of the colored liquid and the color of the absorbing member are different, it is easy to confirm that the thawed liquefied liquid has been absorbed.

According to a fourth aspect of the present invention, in the temperature rise detecting device according to the third aspect, the coloring liquid is formed by coloring water with a food coloring agent, and the absorbing member is formed of absorbent cotton. It is characterized by having. In the present invention, since the coloring liquid is formed by dissolving food coloring, which is a coloring agent for food, with water, the color is bright and easy to see, and since the absorbing member is formed of absorbent cotton, the member is easily available. Easy to manufacture.

According to a fifth aspect of the present invention, in the temperature rise detecting device according to any one of the second to fourth aspects, the sealing container can be easily broken by the expansion force of the liquid when the liquid is frozen. Characterized in that a thin portion to be formed is formed. In the present invention, since the thin portion is formed in the enclosure, the thin portion is destroyed when the liquid is frozen. Therefore, the expansion strain can be concentrated and broken even with a small change in the freezing expansion, so that the liquid can be easily leaked. In the present invention described above, the thin portion of the sealed container refers to a portion that is easily destroyed when the liquid is frozen, and for example, forms a V-shaped groove or a U-shaped groove all around the container, or It refers to a portion where the thickness of the bottom is made smaller than the thickness of the side, or a recess is formed in the bottom.

According to a sixth aspect of the present invention, the temperature rise detecting device according to any one of the first, second, and fifth aspects is mounted and a frozen food is enclosed therein. A container for frozen food characterized by the following. In the present invention, since the temperature rise detection device is mounted on the frozen food container, the past temperature change of the food in the frozen food container can be easily known, and the consumer can purchase with confidence. be able to.

According to a seventh aspect of the present invention, in the container for frozen food according to the sixth aspect, the temperature rise detecting device comprises:
It is characterized by being mounted with its transparent part facing up. In the present invention, since the frozen food container is displayed so that the front side can be seen by the consumer, the consumer can easily see the container.

An eighth aspect of the present invention is a temperature rise detecting method for detecting that the temperature has risen from a frozen state, wherein an enclosure in which a liquid is enclosed and a periphery of the enclosure are covered. Absorbing member, accommodating the enclosure and the absorbing member, at least a part of a transparent waterproof container, comprising a temperature rise detection device for detecting a temperature rise, first of the temperature rise detection device The liquid in the enclosure is frozen, the enclosure is destroyed by the expansion force of the liquid during freezing, and the liquid is allowed to leak from the enclosure. When the liquid that has become capable of being thawed is liquefied and absorbed by the absorbing member, the absorbing state is confirmed by the transparent portion of the container, and a temperature rise from a frozen state is detected. It is a detection method.

According to the present invention, when the liquid enclosed in the enclosure is frozen, the enclosure is destroyed by the expansion force of the liquid at the time of freezing, and the liquid is allowed to leak from the enclosure. You. When the temperature rises and the liquid is thawed and liquefied, the liquid liquid is absorbed by the absorbing member, and by checking the state on the transparent part of the container, it is detected that the temperature has risen from the frozen state it can. Therefore, if such a temperature rise detection device is mounted on a container or the like containing frozen food or frozen blood, the past history of the temperature of the frozen food or the like can be known, so that it is easy to confirm freshness. it can.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, a temperature rise detection device 1 according to a first embodiment of the present invention includes a sealed container 2 in which a liquid is sealed, an absorbing member 3 that covers the periphery of the sealed container 2, And a container 4 for storing the container 2 and the absorbing member 3. As shown in FIG.
The enclosing container 2 is made of, for example, a thin hard plastic, and includes a main body 5 formed in a round cylindrical shape with a bottom, and a lid 6 to cover the main body 5. A V-shaped groove 5A, which is a thin portion, is formed on the outer periphery of the main body 5 over the entire periphery.

Inside the main body 5, a colored liquid 7, which is a liquid, is stored. The coloring liquid 7 is formed by dissolving a crimson in water. The coloring liquid 7 is boiled once and then cooled to remove air in the water. When dissolving the red food in water, additives such as salt and alcohol may be mixed in order to control the freezing and thawing temperature by the freezing point effect. Further, the lid 6 is filled with the coloring liquid 7 so that air does not enter the main body 5, and then covered and adhered and fixed to the main body 5.

In the enclosing container 2 having the above structure, when the coloring liquid 7 contained therein is frozen, the freezing and expanding force of the coloring liquid 7 at the time of freezing causes the main body 5 to be thinner than other parts. The V-shaped groove 5A is broken so that the colored liquid 7 can leak from the inside of the container 2. The absorbing member 3 that covers the enclosure 2 so as to wrap the enclosure 2 is formed of, for example, absorbent cotton, and is accommodated in the housing 4 with the enclosure 2 covered with the absorbing member 3.

As shown in FIG. 1, the container 4 is made of, for example, vinyl and is formed in a bag shape.
A is waterproof. The container 4 has at least one
In this embodiment, the entire surface is transparent.
As shown in (2), when the coloring liquid 7 is absorbed by the absorbing member 3, the color of the absorbing member 3 changes, and the state can be easily recognized.

Next, the operation of the temperature rise detecting device 1 having the above configuration will be described. First, the coloring liquid 7 is placed in the enclosure 2.
And cover the lid 4 so that air does not enter, and adhere the lid. Next, the enclosing container 2 is covered with the absorbing member 3 so as to be wrapped therein, and is housed in the housing 4 in that state, and then the housing 4 is closed. When using the temperature rise detection device 1, first, the entire device is frozen. Then, as shown in FIG. 2, the V-shaped groove 5A of the enclosing container 2 is destroyed by the freezing and expanding force of the coloring liquid 7 at the time of freezing, and becomes a state 5B as shown in FIG. Is in a leakable state.

In the temperature rise detecting device 1 in that state, when the temperature rises, the colored liquid 7 which can be leaked from the sealed container 2 is defrosted and absorbed by the absorbing member 3. As a result, the color of the absorbing member 3 changes, and this state is observed in the transparent portion on the surface of the container 4, indicating that there has been a temperature rise in the past.

According to such an embodiment, the following effects can be obtained. (1) The coloring liquid 7 is sealed in the sealing container 2, and the container 2 is wrapped in the absorbing member 3 and stored in the storage body 4. By utilizing the thawing and liquefaction of the coloring liquid 7, the temperature rise detecting device 1 can be used to detect that the temperature has risen from a once frozen state, so that the device 1 can be manufactured at room temperature and the configuration is simple. Therefore, it can be manufactured at low cost. (2) The temperature rise detection device 1 configured to detect the temperature rise from the frozen state using the expansion force of the enclosed colored liquid 7 during freezing and the thawing and liquefaction of the colored liquid 7. ,
By mounting on a frozen product, it is possible to easily detect whether or not each frozen product has been thawed due to a rise in temperature in the past, and it can be used as a guide when purchasing the frozen food.

(3) Since the coloring liquid 7 is formed by dissolving a harmless food coloring agent in water, even if the coloring liquid 7 adheres to the frozen product for some reason, the frozen product is not affected. (4) Since the colors of the coloring liquid 7 and the absorbing member 3 are different from each other, it can be seen at a glance that the coloring liquid 7 which has been defrosted and liquefied has been absorbed, and it is easy to confirm that the temperature has risen. . (5) Since the coloring liquid 7 is formed by dissolving the red food in water, the color is vivid and easy to see, and since the absorbing member 3 is formed of absorbent cotton, it is easy to obtain and easy to manufacture.

(6) Since the V-shaped groove 5A is formed in the main body 5 of the enclosure 2 and its portion is thin, the expansion strain concentrates on the V-shaped groove 5A when the coloring liquid 7 freezes, and the V-shaped groove 5A Destroyed. Therefore, it can be broken with a small freezing and expanding force,
Even in a small size, it is possible to reliably create a state in which the coloring liquid 7 can leak.

FIG. 6 shows a second embodiment of the present invention. This embodiment is a frozen food bag as a frozen food container equipped with the temperature rise detecting device 1 having the above-described configuration. It is 10. The inside of the bag 10 is filled with frozen food frozen in a freezing factory or the like, and the temperature rise detection device 1 is mounted on a part of the inside of the bag 10 where the picture 11 and the like are printed. ing. The part of the bag 10 where the temperature rise detection device 1 is mounted is transparent, so that a change in the temperature rise detection device 1 can be easily seen from the surface of the bag 10.

Such a bag for frozen food 10 is inspected in a frozen state and then shipped, and is displayed at a retailer's store or the like via a predetermined distribution channel. Up to that point, if the temperature rise detection device 1 in the bag 10 changes, that is, if the absorbing member 3 has absorbed the coloring liquid 7 and turned red, at any point in the distribution route from the factory or the like to the retailer's store or the like. This indicates that the temperature has risen and the frozen state has been released, indicating that the temperature has risen in the past.

According to such an embodiment, the following effects can be obtained. (7) Since the temperature rise detection device 1 is mounted on the frozen food bag 10, the past temperature change of the food in the frozen food bag 10 can be easily known, and the consumer can purchase with confidence. Can be.

The present invention is not limited to the above embodiments, but may be modified as follows as long as the object of the present invention can be achieved. For example,
In the first embodiment, the thin portion is the V-shaped groove 5A formed on the outer periphery of the main body 5 of the sealed container 2, but the shape is not limited to this, and the shape of the groove may be any shape such as a U-shaped groove. As the thin portion, the bottom or the entire lid of the main body 5 of the enclosure 2 may be made thinner, or a concave portion may be formed in the bottom or the lid.

In the first embodiment, the enclosure 2
Is formed of a hard plastic, but is not limited thereto. For example, it may be formed of a composite material of aluminum foil and vinyl. In short, any material can be used as long as the material is easily broken by the expansion force of the liquid during freezing.

Further, in the first embodiment, the enclosing container 2 is formed in a bag shape. However, the shape of the enclosing container 2 is not limited to this, as long as the absorbing member 3 that absorbs the coloring liquid 7 can be accommodated. , Any shape. Further, one side of the enclosing container 2 may be constituted by a frozen food bag, which is a container for frozen food, as long as waterproofness and transparency are maintained.

Further, in the second embodiment, the temperature rise detecting device 1 is mounted on a part of the inside of the frozen food bag 10 where the picture 11 and the like are printed, but is provided outside the bag 10. Is also good.

In the second embodiment, the temperature rise detecting device 1 is attached to the bag 10 for frozen food. However, the present invention is not limited to this, and may be attached to a container or the like containing frozen blood.

[0035]

As described above, according to the temperature rise detection device of the present invention, when the liquid sealed in the enclosure is frozen, the enclosure is destroyed by the expansion force of the liquid during freezing. Thus, the liquid is allowed to leak from the sealed container. When the temperature rises and the liquid is thawed and liquefied, the liquid liquid is absorbed by the absorbing member. By confirming the absorption state in the transparent part of the container, the temperature rise from the first frozen state is detected. The temperature rise from the frozen state can be detected using the expansion force of the liquid during freezing and the thawing and liquefaction of the liquid. In addition, it can be easily detected whether or not thawing has occurred due to a temperature rise in the past. In addition, since the liquid can be formed by simply enclosing the liquid in the enclosing container, covering the liquid with the absorbing member, and storing these in the housing, the manufacturing can be performed simply and easily.

Further, since the frozen food is sealed inside the frozen food container and the temperature rise detecting device is sealed, the past temperature change of the food in the frozen food container can be easily known. Yes, consumers can buy with confidence.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing a temperature rise detection device according to a first embodiment of the present invention.

FIG. 2 is a vertical cross-sectional oblique view showing the temperature rise detection device of the embodiment.

FIG. 3 is an exploded view of a partial cross section showing the sealed container of the embodiment.

FIG. 4 is a longitudinal sectional view showing a state in which the absorbing member of the embodiment has absorbed a coloring liquid.

FIG. 5 is an overall oblique view showing a state of observing a state in which the absorbing member has absorbed the coloring liquid in the container of the embodiment.

FIG. 6 is a view showing a bag for frozen food provided with a temperature rise detection device according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Temperature rise detection apparatus 2 Enclosure container 3 Absorbing member 4 Container 4A Heating part of container 5 Main body 5A V-shaped groove which is a thin part 5B Breakage part after freezing 6 Lid 7 Liquid coloring liquid 10 Container for frozen food Certain frozen food bags 11 Frozen food bag printing section 12 Transparent printing section

Claims (8)

[Claims] 1. A temperature rise detection device for detecting that a temperature rise has occurred after installation, comprising: a solid that has frozen a colored liquid; and an absorbing member that covers the periphery of the solid. The solid liquid defrosted by the temperature rise from the frozen state is absorbed by the absorbing member and colored, and the temperature rise from the frozen state can be detected by coloring the absorbing material. Detection device. 2. A temperature rise detection device for detecting a rise in temperature from a frozen state, comprising: a sealed container in which a liquid is sealed; an absorbing member covering a periphery of the sealed container; And at least a part thereof, which is transparent and waterproof, and accommodates the absorbing member. When the liquid in the enclosure is frozen, the expansion container expands due to the expansion force of the liquid during freezing. Is destroyed so that the liquid can leak from the inside of the enclosure, and the liquid thawing-liquefied by the temperature rise from the frozen state is absorbed by the absorbing member, and the absorbing state is changed to the transparent portion of the container. A temperature rise detection device characterized by being able to detect the temperature rise from a frozen state. 3. The temperature rise detecting device according to claim 2, wherein the liquid is a harmless colored liquid, and a color of the absorbing member is different from a color of the colored liquid. Detection device. 4. The temperature rise detection device according to claim 3, wherein the coloring liquid is formed by coloring water with a food coloring agent, and the absorbing member is formed of absorbent cotton. Temperature rise detection device. 5. The temperature rise detection device according to claim 2, wherein a thin portion is formed in the enclosure so that the enclosure can be easily broken by expansion force of the liquid when the liquid is frozen. A temperature rise detection device, characterized in that: 6. A frozen food product, wherein the temperature rise detecting device according to claim 1, 2 or 5, is mounted, and a frozen food is enclosed therein. container. 7. The frozen food container according to claim 6, wherein the temperature rise detection device is mounted with its transparent portion facing up. 8. A temperature rise detection method for detecting a rise in temperature from a frozen state, comprising: a sealed container in which a liquid is sealed; an absorbing member covering a periphery of the sealed container; And an absorbing member, and at least a part of the container is transparent and waterproof. The temperature rising detecting device detects a temperature rise, and the liquid in the sealed container of the temperature rising detecting device is first formed. Is frozen, and the liquid is allowed to leak from the inside of the enclosure while the enclosure is destroyed by the expansion force of the liquid at the time of freezing. Is absorbed by the absorbing member when thawing and liquefaction, the state of absorption is confirmed by the transparent portion of the container, and a temperature rise from a frozen state is detected.