JP6590408B2 - Vacuum insulated container - Google Patents

Description

  The present invention relates to a vacuum heat insulating container having a sealed space evacuated between an outer plate and an inner plate.

  2. Description of the Related Art Conventionally, an insulated container that accommodates an object and maintains a cold state or a warm state has been used. As such a heat insulating container, a container using a heat insulating material such as urethane foam or polystyrene foam is known. However, when producing a heat insulating container using these heat insulating materials, a very thick heat insulating material is required in order to obtain sufficient heat insulating properties.

  Moreover, what has improved the heat insulation of a container (vacuum heat insulation container) by having the sealed space evacuated between the outer member and inner member of a container is known conventionally (for example, patent document 1). reference.). According to such a vacuum heat insulation container, heat insulation can be improved compared with the case where only a heat insulating material is used.

JP 2011-127673 A

  However, in recent years, a higher heat insulating performance than the conventional vacuum heat insulating container as described in Patent Document 1 has been demanded.

  This invention is made | formed in view of such a situation, and it aims at providing the vacuum heat insulation container with higher heat insulation performance.

In order to solve this problem, in the invention according to claim 1 of the present invention, the main body portion and the lid portion form an accommodation space, and the main body portion is formed in a predetermined container shape. A main body part seal formed by having an outer plate, a main body part inner side plate disposed oppositely on the inner side, and a main part airtight plate closing these upper end parts, and being enclosed and sealed and vacuumed The lid part has a lid part outer plate formed in a predetermined lid shape, a lid part inner plate disposed opposite to the inside, and a lid part airtight plate that closes the lower end parts thereof A lid portion sealed space formed by being enclosed and sealed and evacuated, and the body portion sealed space has a space between the body portion outer plate and the body portion inner plate. Placed away from both A main body part inner plate, and the cover part sealed space has a cover part inner plate disposed between the cover part outer plate and the cover part inner plate in a state of being separated from both. The main body has a pin disposed on and supported by the main body inner plate, and the pin is applied only to either the main body outer plate or the main body inner plate. The main body portion inner plate is in contact with and supported only on either the outer side or the inner side, and the lid portion has a pin disposed on the lid portion inner plate to support them. , said pins, said has become the lid outer plate or the lid inner plate abuts only one of the lid inner plate adapted to support the either one outer or inner only And characterized in that a vacuum insulating container.

In addition to the invention described in claim 1, the invention according to claim 2 of the present invention is configured such that the main body airtight plate and the lid airtight plate are arranged to face each other, and is constituted by an elastic member therebetween. The vacuum pipe container is characterized in that the vacuum pipe container has an airtight state between the main body and the lid by the hollow pipe member .

It An invention described in claim 3 of the present invention, in addition to the invention of claim 1 or 2, wherein the lid and the body portion, which is a vacuum insulated container has a cross section substantially circular It is characterized by.

According to the first aspect of the present invention, since the pins are disposed so as to contact only the inner plate side or only the outer plate side from the inner plate in order to support the inner plate, the rigidity of the container is reduced. Heat can be prevented from being transmitted through the pin in the sealed space while keeping.

According to the invention described in claim 2 of the present invention , it has a hollow pipe member made of an elastic member between a main body part having a vacuumed sealed space and a lid part. Since the space between the lid portions is maintained in an airtight state, a portion where the external space and the internal space are in contact with each other between the main body portion and the lid portion is closed, and the heat insulation performance can be further improved.

Further, according to the invention described in claim 3 of the present invention, by a vacuum insulated container itself has a cross section substantially circular and has a rigidity.

It is a longitudinal cross-sectional view of the vacuum heat insulation container which concerns on embodiment of this invention. It is the A section enlarged view of FIG. 1 in the vacuum heat insulation container which concerns on the same embodiment. It is a single-piece | unit perspective view of the main-body part inner plate in the vacuum heat insulation container which concerns on the embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  The vacuum heat insulating container 10 of this embodiment is used for, for example, a blood transport box or the like, and has a lower body portion 20 and an upper lid portion 30 as shown in FIG. The housing space 1 is formed by these. Further, the main body 20 and the lid 30 of this embodiment are formed in a substantially circular shape in cross section (not shown), and as shown in FIG. And the top surface 30a of the cover part 30 is formed in round shape. Moreover, the vacuum heat insulation container 10 of this embodiment has a vertical dimension of 385 mm and a horizontal dimension of 284 mm, and the inner shape of the accommodation space 1 has a vertical dimension of 347 mm and a horizontal dimension of 240 mm.

  Among these, as shown in FIG. 1, the main-body part 20 has the main-body part outer side plate 21 formed in the above-mentioned container shape, and the main-body-part inner side plate 22 arrange | positioned facing this inside. The main body part outer side plate 21 and the main body part inner side plate 22 of this embodiment are made of a stainless steel plate having a thickness of about 1.5 mm to 1.8 mm (preferably, a thickness of 1.8 mm). In addition, the upper end portions 21a and 22a have a main body airtight plate 23 that closes the upper end portions 21a and 22a. The airtight plate 23 of the main body is formed of a stainless steel plate having a thickness of about 0.3 mm to 0.5 mm (preferably, a thickness of 0.3 mm), and is formed in a substantially V-shaped longitudinal section by being recessed downward. The upper end portions of both the main body portion airtight plate 23 having a substantially V-shaped longitudinal section and the upper end portions 21a and 22a of the main body portion outer plate 21 and the main body portion inner plate 22 are welded. It is fixed to the main body part outer plate 21 and the main body part inner plate 22 without a gap.

The space enclosed by the main body outer side plate 21, the main body inner plate 22, and the main body airtight plate 23 is hermetically sealed by evacuating the interior using an exhaust pipe (not shown). It adapted to form a vacuum), in particular ^{10-4 Pa to 10} -3 Pa about (preferably ^forms a body portion closed space 24 having a ^10-4 about Pa).

  The main body sealed space 24 has a main body inner plate 25 disposed between the main body outer plate 21 and the main body inner plate 22 in a state of being separated from both. The main body inner plate 25 is made of a stainless steel plate having a thickness of about 0.5 mm to 0.6 mm (preferably, a thickness of 0.5 mm). As shown in FIG. It is comprised by two members, what is arrange | positioned by this and what is arrange | positioned at a bottom face part.

  Among these, as shown in FIG. 3, the body portion inner plate 25 at the side surface portion is formed in a substantially cylindrical shape along the shape of the body portion 20, and the outer surface is formed at the mirror surface portion 26. A plurality of holes 27 are provided in the surface of the main body inner plate 25 of the side surface portion. The hole 27 is formed with a diameter of 6.1 mm here, and a pin P as shown in FIGS. 1 and 2 is inserted into the hole 27 and fixed by adhesion or the like. The main body inner plate 25 is positioned and supported in the main body sealed space 24 by the pins P.

  Further, as shown in FIG. 1, the main body inner plate 25 at the bottom portion is formed in a substantially dish shape (or a substantially bowl shape) along the shape of the main body portion 20. Similarly, the outer surface is formed on the mirror surface portion 26. Also, a plurality of holes 27 similar to those of the above-described side surface portion are provided on the surface of the main body inner plate 25 at the bottom surface portion.

  Further, here, the pin P is made of atceram and has a diameter of 6 mm and a length of 10 mm, protrudes from the main body inner plate 25 toward the main body outer plate 21, and contacts the main body outer plate 21. Thus, the main body inner plate 25 is positioned and supported in the sealed space 24. In order to disperse the load applied to the pin P and prevent cracking of the pin P, an elastic body such as a spring is provided around the pin so as to contact both the main body inner plate 25 and the main body outer plate 21. It may be.

  Moreover, the cover part 30 has the cover part outer side plate 31 formed in the above-mentioned cover shape, and the cover part inner side plate 32 opposingly arranged inside this, as shown in FIG. The lid portion outer plate 31 and the lid portion inner plate 32 of this embodiment are formed of a stainless steel plate having a thickness of about 1.5 mm to 1.8 mm (preferably, a thickness of 1.8 mm) similar to the main body portion 20. ing. Moreover, the lower end portions 31a and 32a have a lid portion airtight plate 33 that closes the lower end portions 31a and 32a. The lid portion airtight plate 33 is formed of a stainless steel plate having a thickness of about 0.3 mm to 0.5 mm (preferably, a thickness of 0.3 mm) similar to the main body portion 20, and is paired with the main body portion 20. Are formed in a substantially inverted V shape with the same size and shape being recessed upward, and both the lower end portion of the lid airtight plate 33 having a substantially inverted V shape and the outer side of the lid portion. The plate 31 and the lower end portions 31a and 32a of the lid portion inner plate 32 are welded, so that the plate 31 and the lid portion inner plate 32 are fixed to each other without a gap.

And about the space enclosed and enclosed by these lid part outer side plates 31, the lid part inner side plate 32, and the lid part airtight plate 33, it is the same as that of the main-body part 20 by evacuating the inside using the exhaust pipe which is not shown in figure. It adapted to form a predetermined vacuum state (high vacuum), in particular ^{10-4 Pa to 10} -3 Pa about ^{(preferably, 10} -4 about Pa) forming a lid portion enclosed space 34 with is doing.

  In addition, the lid sealed space 34 has a lid inner plate 35 disposed between the lid outer plate 31 and the lid inner plate 32 in a state of being separated from both. The lid inner plate 35 is formed of a stainless steel plate having a thickness of about 0.5 mm to 0.6 mm (preferably, a thickness of 0.5 mm) similar to that of the main body 20, and as shown in FIG. It is formed in a substantially dish shape (or a substantially bowl shape) along the shape of the lid portion 30, and the outer surface is formed on a mirror surface portion 36 similar to the main body portion 20. A plurality of holes 37 similar to those of the main body 20 are provided on the surface of the lid inner plate 35. The hole 37 is formed with a diameter of 6.1 mm here, and a pin P as shown in FIGS. 1 and 2 is inserted into the hole 37 and fixed by adhesion or the like. The lid inner plate 35 is positioned and supported in the lid sealed space 34 by the pins P.

  Further, here, the material of the pin P is made of atceram as in the case of the main body part 20 and has a diameter of 6 mm and a length of 10 mm, protrudes from the lid part inner plate 35 toward the lid part outer plate 31, The lid portion outer plate 31 is brought into contact with the lid portion outer plate 31, whereby the lid portion inner plate 35 is positioned and supported in the lid portion sealed space 34. In order to disperse the load applied to the pin P and prevent the pin P from cracking, an elastic body such as a spring is provided around the pin so as to contact both the lid inner plate 35 and the lid outer plate 31. It may be.

  As shown in FIGS. 1 and 2, a hollow pipe member 40 formed of an elastic member such as silicon is provided between the main body hermetic plate 23 of the main body 20 and the lid hermetic plate 33 of the lid 30. is doing. The hollow pipe member 40 is fitted between the concave portion of the main body hermetic plate 23 and the concave portion of the lid hermetic plate 33, and the hollow pipe member 40 is brought into contact with and pressed against both of the hermetic plates 23 and 33. Thus, the size and shape are such that the space between the main body 20 and the lid 30 is maintained in an airtight state.

  Hereinafter, the heat insulating effect of the vacuum heat insulating container 10 according to this embodiment will be described.

  When the vacuum heat insulating container 10 of this embodiment is used, the inside of the sealed spaces 24 and 34 is set to, for example, a high vacuum (middle vacuum or low vacuum may be sufficient). For this reason, since heat conduction by the air convection in the sealed spaces 24 and 34 (heat conduction between the outer plates 21 and 31 and the inner plates 22 and 32) can be extremely reduced, sufficiently high heat insulation can be obtained. Can do.

  Further, when the inside of the sealed spaces 24 and 34 is set to a high vacuum, the outer plates 21 and 31 and the inner plates 22 and 32 tend to deform toward the sealed spaces 24 and 34 due to the negative pressure of the sealed spaces 24 and 34. Since the vacuum insulation container 10 of this embodiment has a substantially circular cross section, it has sufficient rigidity and can withstand negative pressure. Therefore, it is not necessary to use a support pin and an inner panel that supports the support pin and to prevent the sealed spaces 24 and 34 from being crushed by negative pressure, and the vacuum heat insulating container 10 is formed with a simpler structure. be able to.

  Moreover, it has substantially V-shaped airtight plates 23 and 33, both ends of the airtight plates 23 and 33 having a substantially V-shaped longitudinal section, and ends of the outer plates 21 and 31 and the inner plates 22 and 32. The portions 21a, 31a, 22a, and 32a are welded so that the outer heat passes through the airtight plates 23 and 33 when the heat is transmitted inward, and the length of the airtight plates 23 and 33 is longer. Therefore, when the outside heat is transmitted inward through the airtight plates 23 and 33, heat is radiated on the way as indicated by the white arrow in FIG. 2, and it is difficult to transmit to the inside. It has become. Moreover, since the thickness of the airtight plates 23 and 33 is formed thinner than the outer plates 21 and 31 and the inner plates 22 and 32, it is easier to dissipate heat (the thickness of the airtight plates 23 and 33 is strength and rigidity). Is as thin as possible because it facilitates heat dissipation). As a result, the vacuum heat insulating container 10 exhibits high heat insulating properties.

  Moreover, as shown in FIG. 2, it has the hollow pipe member 40 with low heat conductivity, such as a silicon | silicone, and the hollow pipe member 40 is a total of 4 with the surface of the airtight plates 23 and 33 of a longitudinal cross-section substantially V shape. By making contact in a form close to a line contact only at a location, it is difficult for outside heat and inside heat to be transmitted to the opposite side through air while securely sealing the main body 20 and the lid 30. Therefore, the outer side can generate heat convection (see arrow B in FIG. 2) and the inner side can generate heat convection in heat (see arrow C in FIG. 2), so that heat conduction is less likely to occur. Can be.

  In addition, if the space between the airtight plates 23 and 33 is sealed with a silicon member or the like that is completely filled with no gap instead of the hollow pipe member 40, the contact area between the silicon member and the airtight plates 23 and 33 increases. On the other hand, it has been found from experiments that heat is easily transmitted through the silicon member. Therefore, like the hollow pipe member 40 of this embodiment, a moderate gap is created in the periphery with a member having a substantially circular cross section such as a hollow pipe, and the seal between the main body 20 and the lid 30 with a small contact area. Is preferably performed. In addition, by creating a space in the interior with a hollow member such as a hollow pipe, it is possible to prevent heat from being easily transmitted through the silicon as in the case of a solid silicon member, thereby making it more difficult for heat to be transmitted. In addition, by using silicon having a lower thermal conductivity than rubber or the like among the same elastic members, the heat insulation is further improved.

  Moreover, it has the inner plates 25 and 35 arrange | positioned in the state spaced apart from both the outer side plates 21 and 31 and the inner side plates 22 and 32, and the outer surface of these inner plates 25 and 35 becomes the mirror surface parts 26 and 36. Therefore, it is possible to prevent heat from being reflected and transmitted to the inside, and to improve the heat insulation performance.

  Further, since the pin P is in contact with only the outer plates 21 and 31, heat is hardly transmitted from the outside to the inside through the pin P, and the heat insulation performance can be further improved.

  As described above, according to the vacuum heat insulating container 10 of this embodiment, the hollow pipe member 40 made of an elastic member is provided between the main body 20 having the sealed spaces 24 and 34 evacuated and the lid 30. Since the space between the main body 20 and the lid 30 is maintained in an airtight state, the portion where the external space and the internal space touch between the main body 20 and the lid 30 is blocked, thereby further improving the heat insulating performance. Can be improved.

  Further, according to this embodiment, the inner plates 23 and 33 are disposed in the sealed spaces 24 and 34 between the outer plates 21 and 31 and the inner plates 22 and 32 in a state of being separated from each other. Since the outer surfaces of 23 and 33 are mirror surface portions 26 and 36, heat reflection from the outside can be performed, and the heat insulation performance can be further improved.

  Further, according to this embodiment, the vacuum heat insulating container 10 itself has a substantially circular cross section and has rigidity, and the plurality of pins P support the inner plates 23 and 33 so that the inner plate 23 , 33 is disposed so as to abut only on the outer plate 21, 31 side, so that heat can be prevented from being transmitted through the pins P in the sealed spaces 24, 34 while maintaining the rigidity of the container 10. .

  The embodiment described above is described in order to facilitate understanding of the present invention, and is not described in order to limit the present invention.

  For example, in the above-described embodiment, the vacuum heat insulating container 10 is formed in a substantially circular cross section and a substantially rectangular cross section by the lower body portion 20 and the upper lid portion 30. The present invention is not limited to this, and it may be configured in other shapes as long as a predetermined rigidity capable of withstanding the pressure in the vacuum state of the sealed space can be maintained. Further, in the case of a shape that cannot withstand the vacuum pressure of the sealed space only by the rigidity of the container, it is necessary to provide support pins that are in contact with and support both the outer plate and the inner plate.

  In the above-described embodiment, the inner plates 25 and 35 are positioned and supported by the pins P that contact the outer plates 21 and 31. However, the present invention is not limited to this, and the pins are directed from the inner plate to the inner plate. The inner plate may be positioned and supported by a pin that abuts against the inner plate.

  In the above-described embodiment, the airtight plates 23 and 33 are formed in a substantially V-shaped cross section. However, the present invention is not limited to this and is configured in an appropriate shape such as a substantially U-shaped cross section. Also good. However, the deeper the V-shape or U-shape, the easier it is to radiate heat on the way, and thus heat is less likely to be transmitted from the outside to the inside of the container, which is preferable.

  In the above-described embodiment, the outer surfaces of the inner plates 25 and 35 are the mirror surface portions 26 and 36. However, the present invention is not limited to this, and the inner surface may be a mirror surface portion. In some cases, only the inner surface may be a mirror surface portion.

  In the embodiment described above, the main body portion inner plate 25 disposed in the main body portion 20 is composed of two members, a side surface portion and a bottom surface portion, and the lid inner plate 35 disposed in the lid portion 30. Is composed of one member, but is not limited to this. For example, the main body inner plate may be composed of one member or three or more members, and the lid inner plate may be composed of two or more members.

  Further, the material, shape, size, degree of vacuum, etc. of the vacuum heat insulating container are not limited to those of the above-described embodiment, and may be determined as appropriate according to the application.

  The vacuum heat insulation container of the present invention can be used for heat insulation containers for various purposes such as a storage box, a blood transport box, and a storage container.

DESCRIPTION OF SYMBOLS 1 Storage space 10 Vacuum heat insulation container 20 Main-body part 20a Bottom surface 21 Main-body part outer plate 21a Upper end part 22 of main-body part outer plate Main-body part inner plate 22a Upper-end part 23 of main-body part inner plate Main-body part airtight plate 24 Main-body airtight space 25 Main body Inner plate 26 Mirror surface portion 27 Hole 30 Lid portion 30a Top surface 31 Lid portion outer plate 31a Lower end portion of lid portion outer plate 32 Lid portion inner plate 32a Lower end portion of lid portion inner plate 33 Lid portion airtight plate 34 Lid portion sealing Space 35 Lid inner plate 36 Mirror surface 37 Hole 40 Hollow pipe member P Pin

Claims (3)

A housing space is formed by the main body and the lid,
The main body includes a main body outer plate formed in a predetermined container shape, a main body inner plate opposed to the inner side of the main body, and a main body airtight plate that closes these upper ends. It has a body part sealed space formed by being enclosed and sealed and evacuated,
The lid portion includes a lid portion outer plate formed in a predetermined lid shape, a lid portion inner plate disposed so as to face the inner side, and a lid portion airtight plate that closes the lower ends thereof, and It has an enclosed space that is enclosed and sealed and vacuumed,
The main body sealed space has a main body inner plate arranged in a state of being separated from both the main body outer plate and the main body inner plate,
The lid sealed space has a lid inner plate disposed in a state of being separated from both the lid outer plate and the lid inner plate.
The main body has a pin that is disposed on and supports the main body inner plate, and the pin abuts only on either the main body outer plate or the main body inner plate. The main body inner plate is supported only on either the outer side or the inner side,
The lid has a pin that is disposed on and supports the lid inner plate, and the pin abuts only on either the lid outer plate or the lid inner plate. A vacuum heat insulating container characterized in that the lid inner plate is supported only on either the outer side or the inner side .
The main body part airtight plate and the lid part airtight plate are arranged to face each other, and a hollow pipe member made of an elastic member is provided between them. Is kept in an airtight state, the vacuum heat insulating container according to claim 1. The lid portion and the body portion, the vacuum heat-insulating container according to claim 1 or 2, characterized in that has a cross section substantially circular.

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