CN109890256A

CN109890256A - Thermally insulated container

Info

Publication number: CN109890256A
Application number: CN201780059170.9A
Authority: CN
Inventors: 佐藤义治; 大泽秀斗
Original assignee: Zojirushi Corp
Current assignee: Zojirushi Corp
Priority date: 2016-09-26
Filing date: 2017-09-11
Publication date: 2019-06-14
Anticipated expiration: 2037-09-11
Also published as: CN109890256B; JP6518017B2; DE112017004804T5; DE112017004804B4; WO2018056095A1; JPWO2018056095A1

Abstract

When the present invention provides a kind of manufacture it is damaged less, the excellent glass system thermally insulated container of impact strength.The thermally insulated container (1) has: glass system inner pressurd vessel (2)；The glass system outer container (3) for surrounding the outside of inner pressurd vessel (2) and being connect at opening portion (1h) with inner pressurd vessel (2)；And configure the spacer (10) between inner pressurd vessel (2) and outer container (3), wherein, spacer (10) is made of calcium silicates based material or diatomite based material, and it is 175N or less that load required for 0.1mm is compressed in the case where compression speed is 0.1mm/ minutes.

Description

Thermally insulated container

Technical field

The present invention relates to thermally insulated containers, more particularly to glass system thermally insulated container.

Background technique

In the past, there is the thermally insulated container for having used glass container.The thermally insulated container be for example loaded into outer packing shell and It is the structure that opening portion is closed with The lid component, for the temperature of the contents such as hot water to be maintained at desired temperature for a long time Product (such as patent document 1).

In addition, Patent Document 2 discloses a kind of glass system vacuum insulation vessels, wherein by glass system inner pressurd vessel and outside The space of container is vacuum-evacuated to be set to vacuum heat-insulating layer, and liner is configured between inner pressurd vessel and outer container (spacer).

The certainly preferred lower material of pyroconductivity of spacer.In addition to this, think that spacer needs have all the time Flexibility and buffering.That is, spacer should prevent from generating due to the heat because of inner pressurd vessel and outer container in the manufacture of thermally insulated container Deformation is thus damaged, and needs to have the flexibility for ensuring the space between inner pressurd vessel and outer container.Moreover, spacer also needs With preventing the resiliency for falling etc. the corresponding container breakage of impact with the product as caused by user when in use.

Existing technical literature

Patent document

Patent document 1: Japanese Unexamined Patent Publication 2000-201834 bulletin

Patent document 2: Japanese Unexamined Patent Publication 2002-58605 bulletin

Summary of the invention

Problems to be solved by the invention

In order to improve spacer as described above, the present inventors have carried out research repeatedly to spacer in detail.That is, Think, the resiliency etc. when flexibility and use when the manufacture that spacer needs to have thermally insulated container is soft to a certain degree Raw material be preferable.Therefore, the previous calcium silicates based material known as construction material is since pyroconductivity is lower, so having A possibility that suitable for thermally insulated container.However, since calcium silicates based material is harder than previous spacer, it is believed that it is being insulated Being applicable in the spacer of container is unsatisfactory.

But inventors have made intensive studies, as a result, it has been found that, by using the calcium silicates system material with particular stiffness The impact of material or diatomite based material as spacer, when can obtain not only preventing breakage when manufacture, but also use Intensity also excellent thermally insulated container, is able to solve the above subject, so as to complete the present invention.

The present invention is completed in view of afore-mentioned, the purpose is to when a kind of manufacture is provided it is damaged less, impact strength Excellent glass system thermally insulated container.

Means for solving the problems

The above subject can be realized by following means.That is, the present invention is as described below.

(1) a kind of thermally insulated container, has: glass system inner pressurd vessel；Surround the outside of the inner pressurd vessel and at opening portion The glass system outer container being connect with the inner pressurd vessel；And to contact with two containers between the inner pressurd vessel and the outer container The spacer that mode configures, wherein vacuum is configured to by the space that the inner pressurd vessel and the outer container surround,

The spacer is made of calcium silicates based material or diatomite based material, is to push for 0.1mm/ minutes in compression speed Load required for contracting 0.1mm is 175N or less.

(2) thermally insulated container according to (1), wherein the spacer connects with the inner pressurd vessel and the outer container At least one face in the face of touching is formed male and fomale(M&F).

(3) thermally insulated container according to (1) or (2), wherein the spacer with the inner pressurd vessel and the outer appearance The surface roughness at least one face in the face of device contact is calculated as 20~50 μm with arithmetic average height Sa.

(4) thermally insulated container according to any one of (1)~(3), wherein the spacer is in compression speed Load required for 0.1mm/ minutes lower compression 0.5mm is 1500N or more.

(5) thermally insulated container according to any one of (1)~(4), wherein the material of the spacer is calcium silicates system Material, the calcium silicates based material obtain in such a way: will be made of the homogeneous mixture of following (A)~(D) Slurry carries out dehydration forming, by obtained molding in 6kg/cm²Steaming processing is carried out under above compressed steam and makes silicon Acid starting material and the reaction of lime raw material, are then heated to 330 DEG C or more under atmospheric pressure and remove the water being detached from from molding,

(A)CaO/SiO₂100 parts by weight of mixture of lime raw material and silicic acid raw material that molar ratio is 0.6~1.2

(B) 50~170 parts by weight of eakleite as obtained from hydrothermal synthesis

(C) 15~150 parts by weight of fibrous wollastonite

(D) 2~8 times of amounts of water whole solid content.

Invention effect

According to the present invention it is possible to which it is exhausted to provide that container when being able to suppress manufacture is damaged, impact strength when using is excellent Heat container.

Detailed description of the invention

Fig. 1 is the mian part cross-section diagram of the thermally insulated container of embodiments of the present invention.

Fig. 2 is the perspective view of spacer shown in FIG. 1.

Fig. 3 is to indicate container side and spacer along sectional schematic diagram, (a) of the part of line A-A shown in Fig. 2 Amplification profile diagram, (b) of the state of surface contact be indicate container side shriveled the state on the surface of spacer amplification it is disconnected Face figure.

Fig. 4 is the figure in the measurement region for the surface roughness for indicating spacer.

Fig. 5 is the figure in the measurement region for the surface roughness for indicating spacer.

Fig. 6 is the 3D rendering of spacer (1) and the determination data of contour curve.

Fig. 7 is the 3D rendering of spacer (1) and the determination data of contour curve.

Fig. 8 is the 3D rendering of spacer (7) and the determination data of contour curve.

Fig. 9 is the 3D rendering of spacer (7) and the determination data of contour curve.

Specific embodiment

Hereinafter, to an embodiment of the invention referring to Fig.1~Fig. 3 is illustrated.In addition, Fig. 1 is by thermally insulated container Vertical cross section figure, Fig. 2 of mian part after being cut off relative to axle center (central axis) CL with 120 degree of angle vertical (axis direction) It is the perspective view of spacer.In addition, Fig. 3 is the amplification profile diagram for showing schematically the surface of spacer.

As shown in Figure 1, thermally insulated container 1 has: glass system inner pressurd vessel 2；Surround the outside of the inner pressurd vessel 2 and in opening portion 1h Locate the glass system outer container 3 connecting with the inner pressurd vessel 2；And between inner pressurd vessel 2 and outer container 3 in a manner of being contacted with two containers The spacer 10 of configuration.Moreover, being configured to vacuum by the space 4 that inner pressurd vessel 2 and outer container 3 surround.

Thermally insulated container 1 forms the space between two containers in its manufacture to connect glass system inner pressurd vessel 2 and outer container 3 4 mode forms.Then, the space 4 between two containers is exhausted from the exhaust portion 3e for the bottom side for being set to outer container 3, is sealed It closes exhaust portion 3e and is arranged to vacuum.

Here, it before by the overlapping of two containers 2,3, is bonded and is isolated with bonding agent in the outer surface of the bottom 1a of inner pressurd vessel 2 Object 10.Spacer 10 configures 3 according in a manner of the equally spaced axle center CL for surrounding inner pressurd vessel 2, forms outer container 3 and content Space 4 between device 2.Then, outer container 3 is matched in a manner of coating inner pressurd vessel 2 postpones, withs while appropriate heating along interior The mode that the form of container 2 squeezes forms.Then, it is vented from exhaust portion 3e, by exhaust portion 3e heat welded to maintain space 4 Vacuum.The thermally insulated container 1 manufactured in this wise be in general come with the state being packed into appropriate outer packing shell 20 using.

The quantity of spacer 10 can be suitably changed according to the size of thermally insulated container, and preferably 2 or more, more preferably 3~10, further preferably 3~5.Particularly preferably 3, this is because one side inner pressurd vessel 2 is opposite with outer container 3 Position stability it is high, on the other hand can reduce the position that heat transfer occurs as far as possible.

As shown in Fig. 2, the spacer 10 has defined thickness d 2, all there is the circle of contact surface 10s with front and back The mode of columnar component is formed.Moreover, contact surface 10s is configured in a manner of contacting with inner pressurd vessel 2 and outer container 3.? It is Nian Jie with inner pressurd vessel 2 after one face or two sides coating adhesive as described above on contact surface 10s, and configure with it is outer Between the bottom 1b of container 3.

Spacer 10 is made of calcium silicates based material or diatomite based material, is in the case where compression speed is 0.1mm/ minutes Compressing load required for 0.1mm is 175N material below.

Calcium silicates based material in the present invention refers to the material containing calcium silicates, is containing calcium oxide (CaO) and silicic acid (SiO ₂) material of the hydrate of compound that is combined into.Calcium silicates for example containing eakleite, tobermorite, wollastonite, The mixture of other calcium silicate hydrates and they.

As calcium silicates based material, the calcium silicates system material more preferably recorded in Japanese Unexamined Patent Application 55-167167 bulletin Material, obtains in the manner as described below: slurry made of the homogeneous mixture following (A)~(D) is dehydrated Molding, by obtained molding in 6kg/cm²Steaming processing is carried out under above compressed steam and makes silicic acid raw material and lime Raw material reaction, is then heated to 330 DEG C or more under atmospheric pressure, removes the water being detached from from molding.

(A)CaO/SiO ₂100 parts by weight of mixture of lime raw material and silicic acid raw material that molar ratio is 0.6~1.2

(B) 50~170 parts by weight of eakleite as obtained from hydrothermal synthesis

(C) 15~150 parts by weight of fibrous wollastonite

(D) 2~8 times of amounts of water whole solid content

Lime raw material, silicic acid raw material, eakleite and fibrous wollastonite can be enumerated in Japanese Unexamined Patent Application 55- Those of recorded in No. 167167 bulletins, it is preferably also the same.Calcium silicates based material can be according to tekiaki 55-167167 public affairs The method of report obtains.

Calcium silicates based material can be further containing reinforcing fiber and additive etc..

Spacer 10 for example can by the calcium silicates based material of plate by machining or Punching Technology to be molded into Desired shape.As the calcium silicates based material of plate, Lumiboard, Ecolux, NA Luxe, HILAC, Mitsubishi Histaika ()、Chiyoda Cera Board() etc. in the form of calcium silicate board just commercially available.

Diatomite based material in the present invention refers to the material containing diatomite, can further containing reinforcing fiber and add Add agent etc..Diatomite is mainly the soft rock or soil formed by a kind of fossil of i.e. shell of diatom of algae, with dioxy SiClx is principal component, sometimes also containing aluminium oxide, iron oxide, oxide of alkali metal etc. other than silica.Diatomite Based material can be obtained from commercially available product, the diatomite based material of plate can be molded by machining or Punching Technology Desired shape.

Calcium silicates based material or diatomite based material had always been considered as harder in the past and were not suitable as buffer component, but It the use of load required for 0.1mm is compressed in the case where compression speed is 0.1mm/ minutes is 175N as spacer 10 in the present invention Calcium silicates based material below.The load required for compression 0.1mm in the case where compression speed is 0.1mm/ minutes of spacer 10 is excellent It is selected as 10N~175N, more preferably 45N~175N, further preferably 45N~120N.By that will be in compression speed Load required for 0.1mm/ minutes lower compression 0.1mm is set as 175N hereinafter, in the manufacture of thermally insulated container, will in Container 2 is inserted into outer container 3 and can prevent breakage when manufacturing double container.

The manufacture of double container is for example performed in the following way: being bonded in the outer surface of the bottom of inner pressurd vessel with bonding agent The outer surface of bottom is bonded in the inner pressurd vessel insertion outer container of spacer by spacer.It is bonded on the inner pressurd vessel of insertion When spacer and outer container contact, it is if it is load required for 0.1mm is compressed in the case where compression speed is 0.1mm/ minutes 175N spacer below can then play 10 bring pooling feature of spacer, and can play prevents inner pressurd vessel 2 and outer container 3 broken The effect of damage.

The material of spacer 10 in the present invention is preferably calcium silicates based material.

Spacer 10 compression speed be 0.1mm/ minute under compression 0.1mm required for load can be by suitably becoming More state of the composition of calcium silicates based material, shape, contact surface etc. adjusts.

The shape of spacer 10 is not particularly limited, but in the present embodiment, and spacer 10 is cylindrical shape, and diameter is excellent It is selected as 6.6~7.0mm, more preferably 6.7~6.9mm.In addition, the thickness (height) of spacer 10 be preferably 3.6~4.2mm, More preferably 3.7~4.0mm.It sets in this way, spacer 10 can allow for the addendum modification of the compression to 0.05mm or more. Therefore, in the manufacture of thermally insulated container, such as even if make between inner pressurd vessel 2 and outer container 3 because of the heat treatment such as annealing Narrower intervals 0.05mm or more (upper limit is about 6mm), spacer 10 will not destroy, and be able to suppress inner pressurd vessel 2 and/or outer container 3 breakage.

Spacer 10 is preferably, as shown in figure 3, the face contacted with inner pressurd vessel 2 and outer container 3 at least one of The contact surface 10s in face is formed male and fomale(M&F).

Can be made following spacer 10: grinding calcium silicate board and after assigning bumps, pass through machining or Punching Technology And form male and fomale(M&F).It can also will be ground after calcium silicate board machining or Punching Technology.Sand paper (example can be used in grinding Such as No. 120, No. 80, preferably No. 30), contact surface 10s can be set to the male and fomale(M&F) of desired roughness.

Bumps can also be formed by transferring concaveconvex shape with mold etc. when calcium silicates based material is shaped to plate Face.

The surface roughness of contact surface 10s is more preferably 20~50 μm in terms of arithmetic average height Sa, is more preferably 20~45 μm.

The surface roughness of contact surface 10s in terms of arithmetic average height Sa if it is above-mentioned range, in thermally insulated container Manufacture when, sufficient pooling feature can be played when the spacer that is bonded on inner pressurd vessel and outer container contact.

Arithmetic average height Sa refers to be expanded to two-dimensional roughness parameter i.e. arithmetic average roughness Ra three-dimensional and obtains The parameter arrived is three-dimensional roughness parameter (three-dimensional short transverse parameter).Arithmetic average height can be from using laser microscope The data of the surface shape of equal measurements are calculated according to the method that iso standard (ISO 25178) is recorded.

On spacer 10, the surface roughness of at least one of the contact surface 10s contacted with inner pressurd vessel 2 or outer container 3 Ra is preferably 20~200 μm, more preferably 25~50 μm.

Surface roughness Ra is the arithmetic average roughness found out according to JIS B0601:2013.

In addition, maximum height Rz is preferably 70~250 μm, more preferably 130~230 μm.

Maximum peak heights Rp is preferably 30~200 μm, more preferably 35~150 μm, further preferably 45~120 μm.

Maximum valley depth Rv is preferably 30~200 μm, more preferably 35~170 μm, further preferably 40~150 μm.

Average height Rt is preferably 60~300 μm, more preferably 100~250 μm, further preferably 130~230 μm.

10 mean roughness RzJIS are preferably 50~150 μm, more preferably 60~120 μm.

Maximum height Sz is preferably 150~300 μm, more preferably 170~300 μm.

The aspect ratio Str of surface texture is preferably 0.1~0.35, more preferably 0.1~0.3.

Arithmetic average curvature, that is, Spc of peak maximum is preferably 4.0~7.0 (1/mm), more preferably 5.0~6.5 (1/mm).

The developed area ratio Sdr at interface is preferably 0.01~0.1, more preferably 0.02~0.05.

Maximum height Rz, maximum peak heights Rp, maximum valley depth Rv, average height Rt, 10 mean roughness RzJIS are It is found out according to JIS B0601:2013.In addition, the arithmetic average of the aspect ratio Str of maximum height Sz, surface texture, peak maximum The developed area at curvature, that is, Spc and interface ratio Sdr can be found out according to ISO 25178.

So, on spacer 10, the contact surface 10s contacted with inner pressurd vessel 2 or outer container 3 is formed bumps Face, thus the contact condition of inner pressurd vessel 2 or outer container 3 and contact surface 10s becomes numerous point contact (referring to Fig. 3 (a)).It is tied Fruit is can to speculate to generate desirable influence to pooling feature.This is because: on spacer 10, (Fig. 3 (b) when applying impact Shown in arrow direction impact), such as with inner pressurd vessel 2 carry out point contact convex portion top 11t such as Fig. 3 (b) shown in that Sample, convex portion shrivel phenomenon.As a result, playing pooling feature using the breakage of convex portion.On the other hand, due to every It is harder material from object itself, so big deformation will not occur, 6 breakage of interconnecting piece of opening portion 1h etc will not occurs Deformation, can play effective buffering effect.

Spacer 10 compression speed be 0.1mm/ minute under compression 0.5mm required for load be preferably 1500N or more, More preferably 1800N~2200N.It is set by the way that load required for 0.5mm will be compressed in the case where compression speed is 0.1mm/ minutes For 1500N or more, the more excellent thermally insulated container of impact strength can be made.When the big impact such as falling to thermally insulated container application When, big deformation, which will not occur, for the interconnecting piece of inner pressurd vessel 2 and outer container 3 can absorb impact, as a result, can for example play The effect for preventing the interconnecting piece 6 of inner pressurd vessel 2 and outer container 3 damaged.

In the case where thermally insulated container breakage due to the impacts such as falling, the support shape for being due to inner pressurd vessel 2 can be speculated State.That is, in thermally insulated container 1 when falling etc., since the quality of the content W of (inside of inner pressurd vessel 2) in container is by inner pressurd vessel 2 Support, moreover, inner pressurd vessel 2 is isolated with the interconnecting piece 6 of outer container 3 by it with the bottom 1b of the side opposite with the interconnecting piece 6 Object 10 supports, so being easy the interconnecting piece 6 with outer container 3 that is concentrating on inner pressurd vessel 2 with the stress to accompany is fallen.Herein, To think in the past, spacer 10 worries the breakage of the contact site of spacer 10 and inner pressurd vessel 2 if hard, thus preferably Compare the material with flexibility.But spacer 10 is if it is the material with flexibility, then flexible deformation when product is fallen Amount becomes larger, and the stress of interconnecting piece 6 can not be inhibited to concentrate, and thinks that interconnecting piece 6 can be damaged in most cases.Present embodiment every From object 10 since so the stress for being able to suppress interconnecting piece 6 is concentrated, it is strong that impact can be made with hardness more than special value Spend excellent thermally insulated container.

As described above, the spacer 10 of present embodiment is by using on the basis of the specific numerical value that compression test determines And preferred spacer, then it is able to suppress the breakage when manufacture of thermally insulated container, in addition, being capable of providing impact strength when use Excellent thermally insulated container.

Embodiment

Hereinafter, being further elaborated with according to embodiment to the present invention, but the present invention is not limited to embodiments below.

(surface roughness)

It will be according to No. #24 sand of calcium silicate board for the method production recorded in Japanese Unexamined Patent Application 55-167167 bulletin Punching Technology is carried out after paper grinding, is thereby preparing for the spacer (1) of the calcium silicates based material of shape shown in Fig. 2.It is dimensioned to Diameter is 6.8mm, with a thickness of 3.8mm.To 10 (sample 1-1~1- in the spacer (1) of the calcium silicates based material of preparation 10) measurement surface roughness is (according to JIS B0601:2013 and ISO 25178, to the arrow between connection 2 × print of Fig. 4 Region, measurement surface roughness Ra, maximum height Rz, maximum peak heights Rp, maximum valley depth Rv, average height Rt, 10 points Mean roughness RzJIS；The aspect ratio of arithmetic average height Sa, maximum height Sz, surface texture are measured to the region 1 of Fig. 5 The developed area ratio Sdr of Str, the arithmetic average curvature Spc of peak maximum and interface), it is recorded in table 1.

Measurement uses contactless 3D analyzer (Keyence corporation, VR-3000).

Other than being processed calcium silicate board without being ground, prepare calcium silicates based material as described above Spacer (7) is recorded in table 1 10 therein (sample 2-1~2-10) measurement surface roughnesses.

In addition, the determination data of the 3D rendering of each sample and contour curve is shown in Fig. 6~9.

Table 1

(embodiment 1)

Glass system thermally insulated container is manufactured using the spacer (1) of calcium silicates based material.

The spacer (1) used is will be according to the silicon for the method production recorded in Japanese Unexamined Patent Application 55-167167 bulletin The spacer that shape shown in Fig. 2 obtained from Punching Technology is carried out after No. #24 sand paper grinding of sour calcium plate, is dimensioned to straight Diameter is 6.8mm, with a thickness of 3.8mm.

Spacer (1) the elasticity of compression test (experimental condition 1) as a result, compression speed be 0.1mm/ minute pushing Load required for contracting 0.1mm is about 100N.

(experimental condition 1)

Testing machine: the Techno Graph TG-10kN of Minebea Co. Ltd. system

Compression speed: 0.1mm/ minutes

Compression distance: until from contact test sample compression to 0.2mm

Contact position: it is tested since the position for applying 1N to test specimen

Test fixture:

Load cell: 5000N

Fixture: diameter 100mm × 25mm

In addition, the elasticity of compression test (experimental condition 2) of spacer (1) as a result, being 0.1mm/ point in compression speed It is 1500N that load required for 0.5mm is compressed under clock.

(elasticity of compression experimental rig and experimental condition 2)

Testing machine: the Techno Graph TG-10kN of Minebea Co. Ltd. system

Compression speed: 0.1mm/ minutes

Compression distance: until from contact test sample compression to 1.0mm

Test fixture:

Load cell: 5000N

Fixture: diameter 100mm × 25mm

Thermally insulated container is as shown in Figure 1, height dimension (H) is 180mm, maximum gauge (D1) is 160mm, opening portion internal diameter (D2) be 45mm, opening portion outer diameter (D3) be 65mm, container glass thickness (D4) is 1.5mm, manufactured 1319.

3 spacers of spacer (1) are bonded to the bottom surface for being set to inner pressurd vessel in advance, which is put into outer container In, in this state, formed in a manner of being connected while heating opening portion, squeezing the opening portion at the same time, It is vented from exhaust portion, by the exhaust portion heat welded, to manufacture thermally insulated container.

The fixation of spacer uses bonding agent, is respectively coated with 0.015g in the single side of spacer.

In the thermally insulated container that 1319 manufacture, damaged is 3.

Drop test is carried out under conditions of following using 5 thermally insulated containers manufactured in the above described manner.

Outer packing shell be it is metal, in the state of using lid to close opening portion and 2.2 liters of water are being added as content It in the state of object, allows the bottom of finished goods container towards floor from the height of 0.5m, falls to it and be laid on concrete floor With a thickness of on the lauan board of 30mm.

In 5 thermally insulated containers of the invention, breakage is 0 due to drop test.

(embodiment 2,3, comparative example 1~4)

Spacer is changed to spacer documented by table 2, in addition to this similarly to Example 1 manufacture embodiment 2,3, The thermally insulated container of comparative example 1~4 carries out drop test.

Table 2

In addition, above embodiment says the thermally insulated container for having used the spacer made of calcium silicates based material It is bright, even if calcium silicates based material, which is replaced with diatomite based material, can also play same effect.

More than, an embodiment of the invention is illustrated, however, the present invention is not limited thereto, can be suitably changed. Spacer is if it is with specific hardness, as long as not had an impact to thermal insulation, size and shape, the number of setting and position It sets etc. and to be just not particularly limited.For example, spacer is set as cylinder, however, you can also not be in embodiment above-mentioned Cylinder.In addition, the shape of thermally insulated container is not also by any restrictions of shape shown in Fig. 1.

Industrial availability

In accordance with the invention it is possible to provide, container when can inhibit manufacture is damaged, the excellent insulation of impact strength when use Container.

The present invention is illustrated in detail and referring to specific embodiment above, but for those skilled in the art It is apparent that various changes or amendment can be added without departing from the spirit and scope of the present invention for member.

The application is complete on the basis of Japanese patent application (Patent 2016-187513) filed on September 26th, 2016 At, content is incorporated herein by.

Symbol description

1 thermally insulated container

2 inner pressurd vessels

3 outer containers

4 spaces

6 interconnecting pieces

10 spacers

10s contact surface

CL central axis

W content

Claims

1. a kind of thermally insulated container, has: glass system inner pressurd vessel；Surround the outside of the inner pressurd vessel and at opening portion with it is described The glass system outer container of inner pressurd vessel connection；And matched in a manner of being contacted with two containers between the inner pressurd vessel and the outer container The spacer set, wherein vacuum is configured to by the space that the inner pressurd vessel and the outer container surround,

The spacer is made of calcium silicates based material or diatomite based material, compresses in the case where compression speed is 0.1mm/ minutes Load required for 0.1mm is 175N or less.

2. thermally insulated container according to claim 1, wherein the spacer connects with the inner pressurd vessel and the outer container At least one face in the face of touching is formed male and fomale(M&F).

3. thermally insulated container according to claim 1 or 2, wherein the spacer with the inner pressurd vessel and the outer appearance The surface roughness at least one face in the face of device contact is calculated as 20~50 μm with arithmetic average height Sa.

4. thermally insulated container described in any one of claim 1 to 3, wherein the spacer is in compression speed Load required for 0.1mm/ minutes lower compression 0.5mm is 1500N or more.

5. thermally insulated container according to any one of claims 1 to 4, wherein the material of the spacer is calcium silicates system Material, the calcium silicates based material obtain in such a way: will be made of the homogeneous mixture of following (A)~(D) Slurry carries out dehydration forming, by obtained molding in 6kg/cm²Steaming processing is carried out under above compressed steam and makes silicon Acid starting material and the reaction of lime raw material, are then heated to 330 DEG C or more under atmospheric pressure and remove the water being detached from from molding,

(B) 50~170 parts by weight of eakleite as obtained from hydrothermal synthesis

(C) 15~150 parts by weight of fibrous wollastonite

(D) 2~8 times of amounts of water whole solid content.