KR101178380B1 - Cooling insulation sturecture - Google Patents

Abstract

The present invention relates to a cold storage structure, wherein the cold air of the second cold storage unit is provided to the first cold storage unit for a longer time through a heat transfer unit provided at a predetermined interval between the first cold storage unit and the second cold storage unit. It can be easily delivered, thereby allowing the first cold storage portion of the cold storage portion to dissipate the cold air of a constant temperature for a longer time, as well as the replacement cycle of the cold storage portion is long, so that the user hasssed with the replacement of the cold storage portion. There is an effect that can minimize the feeling of regret.

Description

COOLING INSULATION STURECTURE}

The present invention allows the cold air of the second cold storage unit to be easily transferred to the first cold storage unit for a longer time through the heat transfer unit provided at a predetermined interval between the heat insulating portion provided between the first cold storage unit and the second cold storage unit. As a result, the first cold storage unit of the cold storage unit may emit cold air at a constant temperature for a longer time, and the replacement cycle of the cold storage unit is also longer, thereby minimizing the user from having to worry about replacing the cold storage unit. It relates to a cold storage structure.

In general, the cold pack is a product that is filled in a sealed pack of the coolant, and serves to lower the temperature of other things in the summer by reducing the temperature by dissipating cold air around.

For example, in order to store food in a box at low temperature, it may be used by putting it in a freezing box or the like, and wearing it on a vest so that the user may work coolly in the summer.

These cold packs are determined according to the characteristics of the coolant and the pack containing the coolant performance, in particular, the duration of the cold hold.

Accordingly, the industry has continued to improve the characteristics of the coolant and the pack containing it.

The present inventors can easily transfer the cold air of the second cold storage unit to the first cold storage unit for a longer time through the heat transfer unit provided at a predetermined interval between the heat insulating portion provided between the first cold storage portion and the second cold storage portion. As a result, the first cold storage unit of the cold storage unit may emit cold air at a constant temperature for a longer time, and the replacement cycle of the cold storage unit is also longer, thereby minimizing the user from having to worry about replacing the cold storage unit. We propose a cold storage structure.

The present invention allows the cold air of the second cold storage unit to be easily transferred to the first cold storage unit for a longer time through the heat transfer unit provided at a predetermined interval between the heat insulating portion provided between the first cold storage unit and the second cold storage unit. As a result, the first cold storage unit of the cold storage unit may emit cold air at a constant temperature for a longer time, and the replacement cycle of the cold storage unit is also longer, thereby minimizing the user from having to worry about replacing the cold storage unit. It is an object of the present invention to provide a cool structure.

The present invention for achieving the above object is composed of a first cooler and a second cooler having a lower freezing point than the first cooler, the first cooler is accommodated inside the second cooler A cold storage part in which a second cold storage part surrounds the first cold storage part; A heat insulation part provided between the first cold storage part and the second cold storage part; A heat transfer part provided in the heat insulation part to transfer cold air of the second cold storage part to the first cold storage part; It provides a cold structure comprising a; a heat insulating body for accommodating the heat insulating portion and the second cold storage portion so that the first cold storage portion is exposed to the outside.

Here, it is preferable that the insertion space is opened in the upper and lower sides is formed inside the first cold storage portion, the heat insulating body is wrapped around the outer peripheral surface portions of both sides of the heat insulating portion, the second cold storage portion and the first cold storage portion.

Furthermore, the present invention includes a first cold storage unit and a second cold storage unit having a lower freezing point than the first cold storage unit, and the first cold storage unit is configured to accommodate the second cold storage unit inside the first cold storage unit. 2, a cold storage unit surrounding the cold storage unit; A heat insulation part provided between the first cold storage part and the second cold storage part; A heat transfer part provided in the heat insulation part to transfer cold air of the second cold storage part to the first cold storage part; It provides a cold storage structure comprising a; a heat insulating body surrounding the second cold insulating portion and the heat insulating portion.

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The present invention allows the cold air of the second cold storage unit to be easily transferred to the first cold storage unit for a longer time through the heat transfer unit provided at a predetermined interval between the heat insulating portion provided between the first cold storage unit and the second cold storage unit. As a result, the first cold storage unit of the cold storage unit may not only radiate cold air at a constant temperature for a longer time, but also the replacement cycle of the coolant becomes longer, thereby minimizing the user from having to worry about replacing the cold storage unit. It is effective.

When the coolant having a lower freezing point than the first cooler is accommodated in the second cooler, the second cooler may be used more easily than the cold air of the first cooler in the first cooler. It has the effect of being able to deliver over time.

In addition, there is an effect that can be more easily formed by using the one or more cold packs.

In addition, there is an effect that it is easier to form the first cold storage using one or more cold packs.

Furthermore, through the cold pack made of the present cold structure, there is an effect that it can be more easily maintained in a low temperature state for a long time without degrading the quality of food, beverages and the like.

In addition, through the cold box made of the present cold structure there is an effect that can be stored in a state that is more easily maintained in a low temperature state for a long time without lowering the quality of the freshness, such as food, beverages, drugs.

In addition, it is possible to more easily control the cold air temperature inside the heat insulation body according to the type of storage stored in the heat insulation body through the cold air discharge hole formed in the heat insulation cover provided on the upper end of the heat insulation body of the cold box. It works.

1 is a cross-sectional view schematically showing a cool structure as a first embodiment of the present invention,
2 is a cross-sectional view schematically showing a cool structure as a second embodiment of the present invention;
3 is a cross-sectional view schematically showing a cool structure as a third embodiment of the present invention;
4 is a perspective view schematically showing a cool structure as a fourth embodiment of the present invention;
5 is a cross-sectional view taken along the line AA of FIG. 4,
6 is a perspective view schematically showing a cold storage structure as a fifth embodiment of the present invention;
7 is a cross-sectional view taken along the line BB of FIG. 6,
8 is a perspective view schematically showing a cool structure as a sixth embodiment of the present invention;
9 is a cross-sectional view taken along the line C-C of FIG.
FIG. 10 is a cross-sectional view schematically illustrating a state in which a second cold storage unit and a first cold storage unit are formed of at least one cold pack.
11 is a sectional view schematically showing a cool pack made of the present cool structure,
12 is a sectional view schematically showing a cool box made of the present cool structure,
13 and 14 are cross-sectional views schematically illustrating a state in which an insulation cover is provided at an upper end of the insulation body of FIG. 12.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It is to be understood that the scope of the present invention is not limited to the following embodiments, and various modifications may be made by those skilled in the art without departing from the technical scope of the present invention.

1 is a cross-sectional view schematically showing a cool structure as a first embodiment of the present invention.

As shown in FIG. 1, the cold storage structure of the first embodiment of the present invention includes a cold storage part 10, a heat insulating part 30, a heat transfer part 50, and a heat insulating body 70.

First, the cold storage unit 10 is composed of a first cold storage unit 110 and a second cold storage unit 130.

The second cold storage unit 130 may be provided in a lower direction of the first cold storage unit 110 while maintaining a predetermined distance from the first cold storage unit 110.

The freezing point fp ₁ of the second cold storage unit 130 is lower than the freezing point fp ₂ of the first cold storage unit 110 (fp ₁ <fp ₂ ).

Next, the heat insulating part 30 is horizontally provided between the first and second cool parts 110 and 130 to be in contact with the first and second cool parts 110 and 130, respectively.

The heat insulating part 30 may be made of a material having high thermal conductivity such as a sponge or a thin styrofoam material, a thin urethane material, a thin cloth material, a thin nonwoven material, and a thin plastic material. It is not limited to this.

Next, the heat transfer part 50 is provided in the heat insulation part 30 to transfer the cool air of the second cold storage unit 130 to the first cold storage unit 110.

The heat transfer part 50 may be provided in plural in the left and right directions at predetermined intervals in the heat insulation part 30 to contact the first and second cold storage parts 110 and 130, respectively.

The heat transfer part 50 may be made of a metal material including copper, aluminum, or the like, a synthetic resin material including a plastic having a thermal conductivity, a glass material having high thermal conductivity, a ceramic material having excellent thermal conductivity, and the like, but is not necessarily limited thereto. Of course, it can be made of more various materials.

However, when the heat transfer part 50 is made of a metal material including copper, aluminum, or the like, since the heat transfer part 50 may be corroded over time, the heat transfer part 50 may have a thermal conductivity. It is preferable to be made of a non-metallic material such as a synthetic resin material, such as a plastic having a high temperature, a glass material with high thermal conductivity and a ceramic material with excellent thermal conductivity.

The cold air conductivity of the heat transfer part 50 may be adjusted according to the thickness, the number of the heat transfer parts 50, and the contact area between the first and second cool parts 110 and 130.

As the thickness of the heat transfer part 50 is thin, the number is large, and the contact area is large, the cold air conductivity of the heat transfer part 50 is increased.

As the thickness of the heat transfer part 50 is thicker, the number is smaller, and the contact area is smaller, the cold air conductivity of the heat transfer part 50 becomes smaller.

Next, the heat insulating body 70 accommodates at least the second cold storage unit 130 of the cold storage unit 10 to prevent heat exchange between the cold and the outside air of the cold storage unit 10.

The heat insulation body 70 may be made of a material having a low thermal conductivity such as a thick styrofoam material, but is not necessarily limited thereto.

For example, as shown in FIG. 1, the adiabatic body 70 may cover both a lower outer peripheral surface portion of the first cold storage part 110 and a lower outer peripheral surface and lower outer peripheral surface of both lower cooling parts 130. .

The upper and lower height values h ₁ of both side surfaces of the heat insulation body 70 are arranged so that the heat insulation body 70 surrounds a portion of the outer peripheral surface of the lower both sides of the first cold storage unit 110. The height value h ₂ and the vertical height value h ₃ of the heat insulating part 30 may be greater than the sum of the sums. (H ₁ > h ₂ + h ₃ )

2 is a cross-sectional view schematically showing a cool structure as a second embodiment of the present invention.

As another example, as shown in FIG. 2, the heat insulation body 70 may surround both the outer circumferential surfaces of both sides of the first cold storage part 110 and the lower outer circumferential surface and the lower both outer circumferential surfaces of the second cold insulation part 130. .

In order to cover the entire outer circumferential surface of both sides of the first cold storage unit 110, the upper and lower height values h ₁ of both side surfaces of the thermal insulation body 70 are vertical heights of the second cold storage unit 130. value (h _2), the vertical height level of the insulating portion (30) (h _3), wherein the same as the vertical height value sum (h ₄₎ value of the first cold storage unit 110 or may be as large as a smile. ( h1 ≥ h ₂ + h ₃ + h ₄ )

3 is a cross-sectional view schematically showing a cool structure as a third embodiment of the present invention.

As another example, as shown in FIG. 3, the heat insulation body 70 surrounds both an upper outer circumferential surface and both outer circumferential surfaces of the first cold storage part 110, and a lower outer circumferential surface and both outer circumferential surfaces of the second cold insulation part 130. Can be.

At this time, as shown in Figure a) of the heat insulating body 70, the upper and lower sides of the cold air discharge hole 71 for discharging the cold air of the first cooling unit 110 to the outside is left and right directions Plurally formed vertically at regular intervals,

As shown in b) of FIG. 3, the cold air discharge holes 71 may be formed at both sides of each of the upper sides of the heat insulating body 70.

The cold air temperature inside the heat insulating body 70 may be adjusted according to the number of the cold air discharge holes 71.

As the number of the cold air discharge holes 71 increases, the cool air of the first cold storage unit 110 can be discharged in a larger amount to the outside, so that a large amount of cold air is inside the heat insulating body 70. It becomes impossible to stay and the cold air temperature inside the heat insulation body 70 becomes high.

As the number of the cold air discharge holes 71 decreases, the cold air of the first cold storage part 110 may be discharged in a smaller amount to the outside, and thus a large amount of cold air inside the heat insulation body 70. It is possible to stay so that the cold air temperature inside the heat insulation body 70 can be lowered.

On the other hand, although not shown in Figure 3, both sides of the central portion of the heat insulating body 70 may be provided with a detachable means including a zipper lock, Velcro, snap button.

By the detachable means, the heat insulation body 70 may be separated and coupled in a bisected state, whereby the user may have the second cooling unit 130 and the heat insulation unit inside the heat insulation body 70 of FIG. 3. 30 and the first cold storage unit 110 can be accommodated more easily.

Next, the coolant 131 having a lower freezing point than the coolant 111 accommodated in the first cooler 110 may be accommodated in the second cooler 130 of the cooler 10.

As the coolant 111 accommodated in the first cold storage unit 110, when water is used, as the coolant 131 accommodated in the second cold storage unit 130, sodium chloride, alcohols, glycols, An aqueous solution in which a freezing point lowering agent such as sugars and urea is dissolved may be used, or a known coolant, dry ice, liquid nitrogen, or the like may be used, but is not necessarily limited thereto.

The freezing point of the coolant 131 accommodated in the second cooler 130 may be lower than that of the coolant 111 accommodated in the first cooler 110.

For example, as the coolant 111 accommodated in the first cold storage unit 110, when using an aqueous solution in which a low concentration of the ice-lowering agent is dissolved in water, the coolant 131 accommodated in the second cold storage unit 130. As an example, an aqueous solution obtained by dissolving a high-density freezing point depressant in water can be used.

When the coolant 131 having a lower freezing point than the coolant 111 of the first cooler 110 is accommodated in the second cooler 130 of the cooler 10, the second cooler 130 is The cold storage unit having a lower temperature than the cold air of the coolant 111 of the first cold storage unit 110 may be easily transferred to the first cold storage unit 110 for a long time.

4 is a perspective view schematically showing a cold storage structure as a fourth embodiment of the present invention, and FIG. 5 is a cross-sectional view taken along line AA of FIG. 4.

Next, the overall shape of the cold storage part 10, the heat insulating part 30, the heat transfer part 50 and the heat insulating body 70 may be formed in a square shape, but is not necessarily limited thereto, and FIGS. As shown in Figure 5 may be formed in a variety of shapes, such as can be formed in any one of a circular or oval shape.

When the overall shape of the cold storage part 10, the heat insulating part 30, the heat transfer part 50 and the heat insulating body 70 is formed in any one of a circular or oval shape,

As shown in FIG. 5, the first cold storage unit 110 may be accommodated inside the second cold storage unit 130 while maintaining a predetermined distance from the second cold storage unit 130.

That is, the second cold storage unit 130 is the first cold storage unit 110 so that the first cold storage unit 110 is located at a predetermined interval inside the second cold storage unit 130. Will be wrapped.

The heat insulation part 30 may be vertically provided between the first cold storage part 110 and the second cold storage part 130 to be in contact with the first cold storage part 110 and the second cold storage part 130.

The heat transfer part 50 may be provided in the vertical direction at a predetermined interval in the interior of the heat insulating part 30 so as to contact the first and second cold storage parts 110 and 130, respectively.

The heat insulation body 70 may be accommodated in a state in which the heat insulation body 30 and the second heat insulation unit 130 are wrapped so that the first cold storage unit 110 may be exposed to the outside.

FIG. 6 is a perspective view schematically illustrating a cool structure according to a fifth embodiment of the present invention, and FIG. 7 is a cross-sectional view taken along line BB of FIG. 6.

Next, as shown in FIGS. 6 and 7, the cross section into which the beverage product, such as a beer bottle, can be inserted vertically is formed in the shape of any one of circular or elliptical shapes inside the first cold storage part 110. The open insertion space 112 is formed, and as shown in FIG. 7, the heat insulating body 70 is formed of the heat insulating part 30, the second cold insulating part 130, and the first cold insulating part 110. Part of the outer circumferential surface of each side can be wrapped.

6 and 7 vertically inserts a beverage product such as a beer bottle into the insertion space 112 formed inside the first cold storage unit 110 of FIG. 6 and FIG. 7 to store the beverage product such as a beer bottle in a cold state for a longer time. .

FIG. 8 is a perspective view schematically illustrating a cool structure according to a sixth embodiment of the present invention, and FIG. 9 is a cross-sectional view taken along line CC of FIG. 8.

Next, as shown in FIGS. 8 and 9, the second cooling unit 130 may be accommodated inside the first cooling unit 110 while maintaining a predetermined distance from the first cooling unit 110. Can be.

That is, the first cold storage unit 110 is the second cold storage unit 130 so that the second bobbin portion 130 is located in the state spaced at a predetermined interval inside the first cold storage unit 110. Will be wrapped.

The heat insulation part 30 may be vertically provided between the first and second cool parts 110 and 130 to be in contact with the first and second cool parts 110 and 130.

The heat transfer part 50 may be provided in the vertical direction at a predetermined interval in the interior of the heat insulating part 30 so as to contact the first and second cold storage parts 110 and 130, respectively.

The heat insulation body 70 may be fixed to the upper and lower surfaces of the second cold storage unit 130 and the heat insulating part 30 by bonding or the like so as to surround the second cold insulating part 130 and the heat insulating part 30. Can be.

10 is a cross-sectional view schematically illustrating a state in which the second cold storage unit 130 and the first cold storage unit 110 are formed of one or more cold packs 133 and 113.

Next, as shown in FIG. 10, the second cooling unit 130 of the cooling unit 10 may be formed of one or more known cooling packs 133.

Next, as shown in FIG. 10, the first cold storage unit 110 of the cold storage unit 10 may also be formed of one or more known cold packs 113.

The freezing point fp ₃ of the coolant 133a accommodated in the one or more cold packs 133 forming the second cold storage unit 130 is one or more of the cold packs forming the first cold storage unit 110. It may be lower than the freezing point fp ₄ of the coolant 113a accommodated inside the 113. (Fp ₃ <fp ₄ )

The cold pack 133 forming the second cold storage unit 130 may be stacked in multiple stages in the vertical direction.

The cold pack 113 forming the first cold storage unit 110 may also be stacked in multiple stages in the vertical direction.

The second cold storage unit 130 may be more easily formed using one or more of the cold packs 133, and the first cold storage unit 110 may be more than one of the cold packs 113. There is an advantage that can be easily formed.

11 is a sectional view schematically showing a cold pack 1 made of the present cold storage structure.

Next, as shown in Figure 11 through the present cooling structure consisting of the cooling unit 10, the heat insulating portion 30, the heat transfer portion 50 and the heat insulating body 70, the cold pack as shown in FIG. ) Can be achieved.

Through the cold pack (1) made of the present cold structure there is an advantage that can be more easily maintained in a low temperature state for a long time without lowering the quality of the freshness, such as food, beverages.

12 is a sectional view schematically showing a cold storage box 2 made of the present cold storage structure.

Next, as shown in FIG. 12, through the present cooling structure including the cooling unit 10, the heat insulating unit 30, the heat transfer unit 50, and the heat insulating body 70, the cold storage box 2 as shown in FIG. 12. ) Can be made.

As shown in FIG. 12, the heat insulation body 70 of the cold storage box 2 covers both the outer circumferential surfaces of both sides of the first cold storage part 110 and the lower outer circumferential surface and the lower both outer circumferential surfaces of the second cold insulation part 130. Can be.

Through the cold storage box (2) made of the present cold structure there is an advantage that can be stored in a state that is more easily maintained in a low temperature state for a long time without lowering the quality of the freshness, such as food, beverages, medicines.

13 and 14 are cross-sectional views schematically illustrating a state in which the heat insulation cover 90 is provided at the upper end of the heat insulation body 70 of FIG. 12.

Next, as shown in FIG. 13, the heat insulation cover 90 may be detachably mounted on the upper end of the heat insulation body 70 of the cold storage box 2.

The insulation cover 90 may be made of a material having a low thermal conductivity such as a thick styrofoam material, but is not necessarily limited thereto.

Meanwhile, although not shown in FIG. 13, the lower end of the other end of the heat insulating cover 90 may be hinged to the other end of the heat insulating body 70 in order to prevent loss of the heat insulating cover 90 in advance. have.

In order to adjust the temperature of the cold air in the heat insulating body 70 according to the type of storage stored in the heat insulating body 70 by the user in the heat insulating cover 90 to the cold air of the first cold storage unit 110 Cold air discharge hole 91 to be discharged to the outside may be formed.

As shown in a) of FIG. 13, one cold air discharge hole 91 having an upper and a lower side open at a center of an upper surface of the heat insulating cover 90 may be formed.

Alternatively, as shown in b) of FIG. 13, a plurality of the cold air discharge holes 91 having upper and lower sides opened on the upper surface of the heat insulating cover 90 may be formed at predetermined intervals in the left and right directions.

Alternatively, as shown in c) of FIG. 13, the cold air discharge holes 91 may be formed on both sides of the heat insulating cover 90, respectively.

Alternatively, as shown in d) of FIG. 13, the cold air discharge holes 91 may be formed on both sides of the heat insulating body 70, both sides of which are open.

The cold air temperature inside the heat insulation body 70 may be adjusted according to the number of the cold air discharge holes 91.

As the number of the cold air discharge holes 91 increases, the cool air of the first cold storage unit 110 may be discharged in a larger amount to the outside, and thus, a large amount of cold air may flow into the heat insulation body 70. It becomes impossible to stay and the cold air temperature inside the heat insulation body 70 becomes high.

As the number of the cold air discharge holes 91 decreases, the cold air of the first cold storage unit 110 may be discharged in a smaller amount to the outside, and thus a large amount of cold air inside the heat insulation body 70. It is possible to stay so that the cold air temperature inside the heat insulation body 70 can be lowered.

According to the kind of storage stored in the heat insulation body 70 through the cold air discharge hole 91 formed in the heat insulation cover 90 provided on the upper end of the heat insulation body 70 of the cold box (2) There is an advantage that it is possible to more easily adjust the cold air temperature inside the heat insulation body (70).

Next, as shown in FIG. 14, the heat insulating cover 90 may include a lower heat insulating cover 910 and an upper heat insulating cover 930.

The lower insulation cover 910 is a horizontal plate 911 in which the cold air discharge hole 91 is formed; One side and the other vertical plate (913, 915) is formed vertically on both ends of the horizontal plate 911, the lower end is seated on the upper end of the heat insulation body 70;

The horizontal plate 911 may have a plurality of cold air discharge holes 91 having upper and lower sides opened at predetermined intervals in a horizontal direction.

The upper side of the one side and the other vertical plate (913, 915) may be extended vertically in a predetermined length in the upper direction of the horizontal plate (911).

The lower side of the one side and the other vertical plate (913, 915) may be extended up and down by a predetermined length in the lower direction of the horizontal plate (911).

An upper storage space 917 may be formed between the one side and the upper side of the other vertical plates 913 and 915.

In the storage space 917, a storage including food, beverages, medicines, and the like may be stored.

The upper insulation cover 930 may be detachably mounted to the upper side surfaces of the one side and the other vertical plate (913, 915).

Meanwhile, although not shown in FIG. 14, the lower end of the other end of the upper insulating cover 930 may be hinged to the upper side of the other vertical plate 915 to prevent loss of the upper insulating cover 930 in advance. It may be.

The present invention configured as described above is the first through the heat transfer unit 50 is provided at a predetermined interval in the heat insulating portion 30 provided between the first cold storage unit 110 and the second cold storage unit 130. The cold air of the second cold storage unit 130 can be easily transmitted to the first cold storage unit 110 for a longer time, and thus the first cold storage unit 110 of the cold storage unit 110 for a longer time Not only can it emit cold air at a constant temperature, but also the replacement cycle of the cold storage unit 10 becomes long, so that the user can minimize the inconvenience of replacing the cold storage unit 10. .

One; Cold pack, 2; Cold Storage Box,
10; Cold storage unit 110; First cold storage part,
111, 113a, 131, 133a; Coolant, 113, 133; Cold Pack,
130; A second cold storage part 30; Heat Insulation,
50; Heat transfer portion, 70; Heat Insulation,
71, 91; Cold air outlet, 90; Insulation Cover,
910; Lower insulation cover, 911; Horizontal Plate,
913; One vertical plate, 915; Other vertical plate,
917; Storage space, 930; Upper insulation cover.

Claims (7)

The first cold storage unit 110 and the second cold storage unit 130 having a freezing point lower than the first cold storage unit 110, the first cold storage unit 110 inside the second cold storage unit 130. Cooling part 10 is the second cooling unit 130 is wrapped around the first cooling unit 110 to accommodate ();
A heat insulation part 30 provided between the first cold storage part 110 and the second cold storage part 130;
A heat transfer part (50) provided in the heat insulation part (30) to transfer the cold air of the second cool part (130) to the first cool part (110);
And a heat insulation body 70 accommodating the heat insulation portion 30 and the second heat insulation portion 130 in a state in which the first insulation portion 110 is exposed to the outside. Insulation structure.
The method of claim 1,
An insertion space 112 is formed in the upper and lower sides of the first cold storage part 110 and is opened.
The heat insulation body 70 is a cold structure, characterized in that it wraps around the outer circumferential surface portion of the both sides of the heat insulating portion 30, the second cold insulating portion 130 and the first cold insulating portion (110).
The first cold storage unit 110 and the second cold storage unit 130 having a freezing point lower than the first cold storage unit 110, the second cold storage unit 130 inside the first cold storage unit 110. Cooling unit 10 is the first cold storage unit 110 is wrapped around the second cold storage unit 130 so that can be accommodated;
A heat insulation part 30 provided between the first cold storage part 110 and the second cold storage part 130;
A heat transfer part (50) provided in the heat insulation part (30) to transfer the cold air of the second cool part (130) to the first cool part (110);
Insulating structure, characterized in that it comprises a; heat insulating body (70) surrounding the second insulated portion (130) and the heat insulating portion (30). delete delete delete delete

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