The divisional application that the application is application number is 201110140316.7, the applying date is on 05 27th, 2011, denomination of invention is the application of " body of thermal insulating box in food storage storehouse ".
Detailed description of the invention
(1) first embodiment
Below, referring to figs. 1 through Fig. 6, the first embodiment is described.Fig. 1 (b) represents the surface structure of the body of thermal insulating box 1 of the refrigerator of present embodiment.This body of thermal insulating box 1 is configured to, and is formed as the substantially rectangular box like of the lengthwise of front openings as a whole, such as, between plastic interior case 2 and the outer container 3 of steel plate, and such as bonding installation multiple vacuum heat-insulating plates 7 described later.In addition, the installation of this vacuum heat-insulating plate 7, can also adopt the methods such as engaging or clamping except bonding.
Although not shown, but in this body of thermal insulating box 1, be assembled with the freeze cycle etc. of well-known structures, and the inner space of body of thermal insulating box 1 is divided into upper and lower multiple storeroom (Leng KURA room, refrigerating chamber, vegetable compartment etc. by the adiabatic demarcation strip of level) and form refrigerator main body.
Now, the rear side bottom of body of thermal insulating box 1 is provided with Machine Room, in Machine Room, is equipped with the compressor etc. forming freeze cycle.
Body of thermal insulating box 1 has these 5 wall portion of left and right sides wall portion, top wall portion, back wall portion and bottom wall part, but in the present embodiment, as shown in Fig. 1 (a) etc., these wall portion are made up of left side wall (A), right side wall (B), roof (C), back wall (D) and diapire each wall unit 4 of (E) respectively.
At this, when needs additional symbols 5 (left side wall with (A), right side wall (B), roof (C), back wall (D) and diapire with (E)) wall unit 4, symbol " 4 " after, add (A), (B), (C), (D), (E) respectively.
In addition, as shown in Fig. 4 (b), wherein bottom wall part (diapire wall unit 4 (E)) is configured to bending shape, has the part of the first half at the end forming refrigerator main body integratedly and extends obliquely upward from edge thereafter and become the inclined wall of the wall of the front side of Machine Room.
The upper end edge of inclined wall is docked with the lower end edge of above-mentioned back wall wall unit 4 (D).
As in Fig. 2, Fig. 3 also shown in part, above-mentioned each wall unit 4 (A) ~ 4 (E) is configured to respectively, sticking vacuum heat insulation plate 7 between interior case dividing body 5 and outer container dividing body 6.
Wherein interior case dividing body 5 is configured to the shape interior case 2 entirety split by above-mentioned 5 wall portion.
At this, such as, when representing that left side wall uses the interior case dividing body 5 of (A), be expressed as 5 (A).Equally when representing that right side wall uses the outer container dividing body 6 of (B), be expressed as 6 (B).
In this case, each interior case dividing body 5 by being that laminal products formed is formed by plastic shaping, but also can replace injection-molded article in the past, and makes case dividing body 5 in these be vacuum formed product.
Thereby, it is possible to by the thickness slimming fully of interior case 2 (interior case dividing body 5).As the gauge of this interior case dividing body 5, be preferably below 1.5mm, be such as formed as about 0.5mm in the present embodiment.
Above-mentioned vacuum heat-insulating plate 7 is also formed as the shape (shape than interior case dividing body 5 little enclose) corresponding with above-mentioned each interior case dividing body 5.In addition, outer container dividing body 6 is configured to the shape outer container 3 entirety split by above-mentioned 5 wall portion.
For case dividing body 5, outer container dividing body 6, vacuum heat-insulating plate 7 in these, when needs for each wall unit 4 (A) ~ (E) be distinguished as interior case dividing body 5, outer container dividing body 6, vacuum heat-insulating plate 7, as described above, after symbol, (A), (B), (C), (D), (E) is added respectively.
Fig. 3 as wall unit 4 representative and represent the structure of left side wall wall unit 4 (A).
Laminal interior case dividing body 5 (A), the on the other surface bonding steel plate outer container dividing body 6 (A) of bonding plastics on a face of vacuum heat-insulating plate 7 (A), and form this wall unit 4 (A).
Now, outer container dividing body 6 (A) is formed as roughly that lengthwise is rectangular-shaped as a whole, but interior case dividing body 5 (A) and vacuum heat-insulating plate 7 (A) are formed as the part corresponding with Machine Room by the shape of excising obliquely.
In addition, among outer container dividing body 6 (A), namely the corner portion of the rear portion side in bottom forms the part of Machine Room, is provided with the metal strengthening part 8 of the L font being called angle steel.
Although not shown, right side wall wall unit 4 (B) also possesses the structure symmetrical with left side wall wall unit 4 (A).Therefore, in Machine Room, there is not heat-insulating material in left and right sidewall, and be only provided with the outer container 3 (outer container dividing body 6) of steel plate.
Further, Fig. 4 represents the structure of diapire wall unit 4 (E), is also bonding interior case dividing body 5 (E) and outer container dividing body 6 (E) and form on two faces of vacuum heat-insulating plate 7 (E).
In this case, interior case dividing body 5 (E) and outer container dividing body 6 (E) are bent to form in advance as cross section roughly V shape.For vacuum heat-insulating plate 7 (E), the concave part also passing through the cross section V shape that will be formed at middle part, as folding line, is bent into the shape corresponding with interior case dividing body 5 (E) and outer container dividing body 6 (E) thus.
In this case, when the bonding process of three, although needing not shown pressing fixture (pressue device) etc. to give pressing force, can above-below direction in the diagram give pressure and carry out bonding process.
About back wall wall unit 4 (D), also as shown in a part of Fig. 2, bonding interior case dividing body 5 (D) and outer container dividing body 6 (D) on two faces of vacuum heat-insulating plate 7 (D) and form.Although not shown, end face wall unit 4 (C) also possesses the structure roughly the same with above-mentioned each wall unit 4.
As shown in Figure 1, above-mentioned body of thermal insulating box 1 is formed 5 wall unit 4 (A) ~ 4 (E) combination, but about the structure of the linking portion (butted part) of these wall unit 4 (A) ~ 4 (E) by aftermentioned.
At this, with reference to the structure of Fig. 5 and Fig. 6 simple declaration vacuum heat-insulating plate 7.As shown in Figure 5, vacuum heat-insulating plate 7 is configured to, and is accommodated in bag 10 by the core 9 of matt-like, and the inside of bag 10 is remained vacuum decompression state and seals.
Core 9 is configured to, and by the cotton of material high for heat-insulating property, such as thin glass fiber and mineral wool, is fixed as matt-like (rectangular plate-like).
Bag 10 is configured to, such as by aluminium-vapour deposition film or stacked aluminium foil and synthetic resin film and the high film severing of the gas barrier properties formed is oblong-shaped and superimposed 2, except a minor face, periphery (three limits) is carried out heat seal with " コ " shape, become and almost accommodate the bag-shaped of core 9 airtightly.
When manufacturing vacuum heat-insulating plate 7, first inserting core 9 from the opening portion (minor face) of bag 10 and accommodating.Bonding, the opening portion of bag 10 is connected with drawdown pump, vacuum exhaust is carried out to inside and makes it reduce pressure.
Bonding, under the state maintaining decompression, sealed by the opening portion of heat seal to bag 10.But, in this condition, as shown in Fig. 5 (a) and Fig. 6 (a), on four limits of bag 10, as the ear 10a of the heat seal amount of stretching out towards periphery from core 9, be set to larger width.
Therefore, as shown in Fig. 6 (b), the ear 10a of long side is turned back side upward, then, as shown in Fig. 5 (b) and Fig. 6 (c), the ear 10a of short brink is turned back side upward.
Then, by fixing two fold back portion with adhesive tape, vacuum heat-insulating plate 7 is obtained thus.In addition, the side (top side in Fig. 5, Fig. 6) that the ear 10a in vacuum heat-insulating plate 7 is folded back, is configured in interior case 2 (interior case dividing body 5) side.
In the present embodiment, when combination 5 wall unit 4 (A) ~ 4 (E) forms body of thermal insulating box 1, following package assembly is adopted.That is, Fig. 2 represents the structure (cross section) of link (docking) part of left side wall wall unit 4 (A) and back wall wall unit 4 (D) typically.
At this, back wall wall unit 4 (D) becomes a side side, and left side wall wall unit 4 (A) becomes the opposing party side.
First, at left side wall with in wall unit 4 (A), on outer container dividing body 6 (A), anterior lip portion 11 and reflex part 11a is provided integrally with in front face side (in figure left side), this anterior lip portion 11 inwardly bends case 2 side squarely, and this reflex part 11a turns back into U-shaped further continuously from the front end in this anterior lip portion 11.
On the other hand, in the front face side of interior case dividing body 5 (A), be integrally formed with insertion section 12 in the mode being bent into right angle, the linking part material 13 being formed U-shaped by cross section engages this insertion section 12 and above-mentioned reflex part 11a.
More specifically, forwards outstanding claw 13a is formed in the fastening part at linking part material 13 rear.The claw 12a of the insertion section 12 of case dividing body 5 (A) in claw 13a engages.
Under the state that the insertion section 12 of the reflex part 11a in the anterior lip portion 11 of this outer container dividing body 6 (A) and interior case dividing body 5 (A) is inserted in the gap of linking part material 13 respectively, the both sides of linking part material 13 act on elastic recovering force respectively in a direction close to each other.
Therefore, the reflex part 11 in the anterior lip portion 11 of outer container dividing body 6 (A) and the insertion section 12 of interior case dividing body 5 (A), be restricted to the state contacted with each other by the elastic recovering force of linking part material 13, prevent from extracting upward by the claw 13a of linking part material 13 and the claw 12a engaging power each other of interior case dividing body 5 (A).
So, form wall unit 4 (A) by the outer container dividing body 6 (A) and interior case dividing body 5 (A) having received vacuum heat-insulating plate 7A, such as, be equivalent to the first wall unit.
In addition, the rear flange portion 14 bent squarely is provided integrally with in the rearward end of outer container dividing body 6 (A).In this rear flange portion 14, the end (left lateral) of the outer container dividing body 6 (D) of overlapping back wall wall unit 4 (D), carries out screw thread by not shown screw at multiple position and fixes.In addition, also can be engaged by welding.
The interior case dividing body 5 (A) of left side wall wall unit 4 (A) (the first wall unit) is provided integrally with extension 15, this extension 15 be arranged in combine side with other wall unit 4 (D) (the second wall unit) described later edge (end), namely after edge (figure right side), and curve right angle and inner face side towards outer container dividing body 6 (A) extends.
The front end of this extension 15 bends further squarely, is provided with the installation portion 15a extended abreast with the inner face of outer container dividing body 6 (A).Bonding by encapsulant 16 between the inner face of this installation portion 15a and outer container dividing body 6 (A).The synthetic resin that sealing material 16 is soft compared with the synthetic resin of the base material with interior case dividing body 5 (A) or rubber are formed, the installation portion 15a of the interior case dividing body 5 (A) of blocking and outer container dividing body 6 (A) gap each other.
The vacuum heat-insulating plate 7 (A) be housed between interior case dividing body 5 (A) and outer container dividing body 6 (A) is, the both ends of the surface of fore-and-aft direction, are arranged with the form between interior case dividing body 5 (A) and outer container dividing body 6 (A) with gap.
Although not shown, but on two faces of vacuum heat-insulating plate 7 (A), be coated with bonding agent, under the state that the three of interior case dividing body 5 (A), vacuum heat-insulating plate 7 (A) and outer container dividing body 6 (A) overlaps, by giving pressing force by pressing fixture (pressue device) from side, two sides, carry out engaging (bonding) operation.
Now, flat adhesive-applying in vacuum heat-insulating plate 7 (A), except the ear 10a be folded back, vacuum heat-insulating plate 7 (A), in the part except fold back portion, is engaged by bonding and interior case dividing body 5 (A) and outer container dividing body 6 (A).Bonding agent is not limited to be coated in the whole of the flat except ear 10a, also can be coated in a part.
In addition, on interior case dividing body 5 (A), on the position that the ear 10a be folded back with vacuum heat-insulating plate 7 (A) is opposite, the order difference part (recess) 17,17 as the storage component for receiving ear 10a is formed.
In addition, although not shown, at the gap portion of the end face side of vacuum heat-insulating plate 7 (A), such as, configure the soft-member of the elastically deformables such as soft ribbons.
Relative to this, the back wall wall unit 4 (D) being such as equivalent to the second wall unit is same with the structure of above-mentioned left side wall wall unit 4 (A), bonding vacuum heat-insulating plate 7 (D) between interior case dividing body 5 (D) and outer container dividing body 6 (D) and forming.
Now, interior case dividing body 5 (D) is provided integrally with protuberance 18, this protuberance 18 abuts with the inner face i.e. inner face of interior case dividing body 5 (A) of wall unit 4 (A), and extend to inside-of-refrigerator (in figure left side), the details of protuberance 18 is by aftermentioned.
In addition, the inner face of wall unit 4 (A) (interior case dividing body 5 (A)) is provided with the location division 19 of overshooting shape, and the front end of protuberance 18 abuts with this location division 19 and is located.
Now, in the inner side of protuberance 18, such as, contain the heat-insulating material 20 formed by the products formed of foam styrene or urethanes etc.In addition, protuberance 18 is after extending to inside-of-refrigerator, extend along the inner face of interior case dividing body 5 (A) towards the inner face side of outer container dividing body 6 (D), and its front end bends squarely, form the installation portion 18a extended abreast with the inner face of outer container dividing body 6 (D).
Between the inner face of this installation portion 18a and outer container dividing body 6 (D), such as, encapsulant 21 by being formed by soft synthetic resin or rubber is bonding.In addition, although the diagram of eliminating, in order to improve air-tightness, be formed at outside extension 15, for making a concession in the spatial portion S of screw, be accommodated with the filler etc. of the rubber as thermal insulation member.
From forward observation, left side wall with wall unit 4 (A) and back wall wall unit 4 (D) each other, engage in the mode that left side is overlapped.Under the state that this left side wall is engaged each other with wall unit 4 (A) and back wall wall unit 4 (D), left side wall with the left side of the core 9 of the rear end face of the core 9 of the vacuum heat-insulating plate 7 of wall unit 4 (A) and the vacuum heat-insulating plate 7D of back wall wall unit 4 (D) each other, be formed with non-domain of the existence NC.
This non-domain of the existence NC is the non-existent region of core 9 in the vacuum heat-insulating plate of two wall unit 4, exists along the above-below direction of back wall with wall unit 4 (D).
Above-mentioned protuberance 18 has and the above-below direction length dimension identical to lower end from the upper end of non-domain of the existence NC, is accommodated with the heat-insulating material 20 of solid shape in protuberance 18.The heat-insulating property of this heat-insulating material 20 is lower than vacuum heat-insulating plate 7, and has and the above-below direction length dimension identical to lower end from the upper end of non-domain of the existence NC.
This heat-insulating material 20, above-below direction via non-domain of the existence NC is overall opposite with the space outerpace of body of thermal insulating box 1, observe from the side, overlapping with the core 9 of the vacuum heat-insulating plate 7 (A) of left side wall wall unit 4 (A), from forward observation, overlapping with the core 9 of the vacuum heat-insulating plate 7 (D) of back wall wall unit 4 (D).
So, by storage configuration heat-insulating material 20, heat-insulating property can be improved.
In the above-described embodiments, left side wall wall unit 4 (A) and back wall wall unit 4 (D) joint are each other illustrated, but other engage, such as roof wall unit 4 (C) is also same with back wall wall unit 4 (D) joint etc. each other, putting it briefly, is effective for the first wall unit and the second wall unit joint each other.
Below, the effect of the body of thermal insulating box 1 of present embodiment, effect are described.As shown in Fig. 1, Fig. 3 etc., become the interior case 2 of box like as a whole, be made up of the multiple interior case dividing body 5 divided according to each wall portion, and each vacuum heat-insulating plate 7 is configured to the shape corresponding respectively with each interior case dividing body 5.
Thus, each interior case dividing body 5 can be formed as fairly simple shape, therefore from multiple of case in box like the situation of sticking vacuum heat insulation plate is different respectively, when the plurality of interior case dividing body 5 engages vacuum heat-insulating plate 7 (by bonding installation) respectively, for case dividing body 5 in each, by a direction pressing or install just enough.As a result, do not need the equipment of complicated fixture and high price, the simplification of bonding process can be realized, boost productivity.
Especially in the present embodiment, left side wall is used, right side wall is used, roof is used, each interior case dividing body 5 (A) ~ 5 (D) of rear wall, and all become tabular, therefore bonding process transfiguration is easy.In addition, remaining diapire is with interior case dividing body 5 (E), as shown in Figure 4, etc., be configured to the tabular bent at 1 obtuse angle, place, therefore with diapire wall unit 4 (E) is divided into 2 plate parts and compared with situation about arranging, also be that structure becomes simple, bonding process transfiguration can be made equally easy.
And, in the present embodiment, outer container 3 is also formed accordingly, according to multiple outer container dividing bodies 6 that each wall portion is divided by with interior case dividing body 5, by multiple the three of outer container dividing body 6, vacuum heat-insulating plate 7 and interior case dividing body 5 is fitted and wall unit 4 combination that forms to form body of thermal insulating box 1 overall.
Therefore, the further transfiguration of assembling operation is easy, and required equipment can be made more miniaturized.In addition, when the part in body of thermal insulating box 1 there occurs unfavorable condition, can only exchange corresponding wall unit 4 etc., exchanging operation when unfavorable condition occurs also transfiguration is easy, and can place under repair by qurer.
In the present embodiment, as shown in Figure 2, as the structure of each wall unit 4, the edge of side is combined with other wall unit 4 at interior case dividing body 5, be provided with the extension 15 extended towards the inner face of outer container dividing body 6 integratedly, therefore, it is possible to locating effect when obtaining the bonding process carrying out wall unit 4.
In addition, because the installation portion 15a of extension 15 front end is bonding by encapsulant 16 with between outer container dividing body 6 inner face, the effect preventing extraneous gas from invading to wall unit 4 inside can also therefore be expected.
In the wall unit 4 of present embodiment, as shown in Figure 2, the form between the end face of vacuum heat-insulating plate 7 and interior case dividing body 5 and outer container dividing body 6 with gap is arranged in.
Therefore, even if the situation that the low temperature that the part forming refrigerating chamber in such as existing in case 2 (interior case dividing body 5) is such as reduced to-20 DEG C also shrinks, also can, by absorbing relative dimensional variations with the gap between vacuum heat-insulating plate 7, can prevent from acting on unnecessary power to vacuum heat-insulating plate 7.
Particularly, for vacuum heat-insulating plate 7, although the bight of the end face portion represented by symbol F in Fig. 6 (c) (edge part be bent of bag 10), sometimes easily damage (splitting) because impact waits, but can prevent this part from contacting with interior case dividing body 5 or outer container dividing body 6 and rubbing and damage.
Vacuum heat-insulating plate 7, at the periphery of interior case dividing body 5 side, so that bonding around bag 10 is had fold back portion by the form that ear 10a turns back, this fold back portion has concavo-convex, is difficult to bonding compared with other parts, and sometimes easily damaged.
In the present embodiment, in order to vacuum heat-insulating plate 7 is carried out bonding in the part except its fold back portion with interior case dividing body 5 and outer container dividing body 6, and the order difference part 17 that will be configured at as the ear 10a of reflex part as storage component, therefore, it is possible to guarantee compared with excellent adhesion property and prevent the unfavorable conditions such as the breakage of ear 10a.
And, in wall unit 4 assembling each other (docking) structure of present embodiment, as shown in Figure 2, in edge each other by the wall unit 4 (interior case dividing body 5) in the wall unit 4 that docks, be provided with and abut and the protuberance 18 extended to inside-of-refrigerator with the inner face of another wall unit 4, therefore be difficult to each other form gap, the right angle of easy forming unit at wall unit 4 when assembling, and heat-insulating property becomes better.
In addition, the mechanical strength as body of thermal insulating box 1 can also be improved.Now, on the inner face of another wall unit 4, be provided with the location division 19 engaged with the protuberance 18 be arranged on a wall unit 4 (interior case dividing body 5), therefore, it is possible to improve assembling property.
In addition, be configured with heat-insulating material 20 oppositely with the core 9 non-domain of the existence NC each other of the vacuum heat-insulating plate 7 at the junction surface of the first wall unit and the second wall unit.Therefore, by heat-insulating material 20, the situation that heat enters the inner space of body of thermal insulating box 1 from the space outerpace of body of thermal insulating box 1 by non-domain of the existence NC is suppressed for lower, therefore, it is possible to suppress power consumption for lower.
(2) second embodiments
Fig. 7 represents the second embodiment, be with the difference of the first embodiment: bonding multiple vacuum heat-insulating plate 7 between interior case and outer container and in the body of thermal insulating box formed, left and right sides wall portion and roof by by this three in one the link wall unit 31 of form that links form.In addition, in Fig. 7 (c), conveniently, link wall unit 31 is represented using the state of having reversed up and down (by the state of roof as downside).
As shown in Fig. 7 (a) etc., link wall unit 31 by a carton structure plate 32, undertaken bonding forming by bonding agent according to the vacuum heat-insulating plate 34 (A) of divided interior case dividing body 33 (A), 33 (B), 33 (C) and the shape corresponding with case dividing body 33 in these of each wall portion (left side wall, right side wall portions, top wall portion), 34 (B), 34 (C).
When assembling, carton structure plate 32 entirety becomes the tabular of growing crosswise in the drawings, at the bonding vacuum heat-insulating plate 34 (A) of the inner face side of carton structure plate 32,34 (B), 34 (C), and at this each vacuum heat-insulating plate 34 (A), the upper bonding interior case dividing body 33 (A) respectively of 34 (B), 34 (C), 33 (B), 33 (C) (with reference to Fig. 7 (b)).
In this case, each vacuum heat-insulating plate 34 (A), 34 (B), 34 (C) and each interior case dividing body 33 (A), 33 (B), 33 (C), with between wall portion (two places) there is the form in gap, be bonded on the assigned position of upper surface in the figure of carton structure plate 32.
In addition, when carrying out this bonding process, giving pressing force by fixture (pressue device) to a direction (in figure above-below direction), not needing the equipment of complicated fixture and high price.
After bonding, two places between the wall portion in carton structure plate 32, the operation bent squarely, as shown in Fig. 7 (c), forms and links wall unit 31.Therefore, by this second embodiment, also can realize the simplification of bonding process, boost productivity.
(3) the 3rd embodiments
Fig. 8 represents the 3rd embodiment, is the shape of diapire wall unit 41 with the difference of the first embodiment.This diapire wall unit 41 has the shape as lower part with being integrally constituted: the part forming the bottom (part except Machine Room) of refrigerator main body; Rear edge bottom this generally perpendicularly erects, and forms the part of the front wall portion of Machine Room; And substantially horizontally rearward extend from the upper end of this front wall portion, and form the part of the roof of Machine Room.That is, observe from the side, the roughly Z-shaped of 2 times of turning back with being configured to approximate right angle.
Also be configured in this wall unit 41, between interior case dividing body 42 and outer container dividing body 43, by adhesive bonds vacuum heat-insulating plate 44.
In this case, as shown in Figure 8, the bonding process of these parts, such as, by under the form of the angle of integral inclined 45 degree, can carry out while giving pressing force by fixture (pressue device) to a direction (in figure above-below direction).
Now, confirm following situation: if the height dimension H of entirety is roughly below 200mm, even if then have this shape repeatedly bent, also can carry out the bonding process of the pressing based on a direction.
Therefore, by the 3rd embodiment, also can not need the equipment of complicated fixture, high price, the simplification of bonding process can be realized, boost productivity.
In addition, vacuum heat-insulating plate 44 also entirety can be configured to 1 plate (having the bending part at two places), also can be split up into multiple (being 2 or 3 in this case) and be arranged between interior case dividing body 42 and outer container dividing body 43.Which kind of mode can both realize bonding process simplification, boost productivity.
(4) the 4th embodiments
Fig. 9 represents the 4th embodiment, is the installation method of heat-insulating material 20 with the difference of the first embodiment.
In the first embodiment, heat-insulating material 20 is received into and is arranged on as in the protuberance 18 on the interior case dividing body 5 (D) of the wall unit 4 (D) of the second wall unit, but in the 4th embodiment, be arranged on bonding for heat-insulating material 20 as on the interior case dividing body 5 (A) of the wall unit 4 (A) of the first wall unit and the interior case dividing body 5 (D) of wall unit 4 (D).That is, heat-insulating material 20 is directly configured in the inner space of body of thermal insulating box 1.
According to this structure, also the situation that heat enters the inner space of body of thermal insulating box 1 by non-domain of the existence NC can be suppressed for lower by heat-insulating material 20.
(5) the 5th embodiments
Figure 10 represents the 5th embodiment, by the configuration of heat-insulating material 20 relative to non-domain of the existence NC, such as, is applied to the wall unit 4 (A) of left side wall.
Vacuum heat-insulating plate 71 (A) and vacuum heat-insulating plate 72 (A) are configured in the wall unit 4 (A) of the left side wall of body of thermal insulating box 1 respectively, at vacuum heat-insulating plate 71 (A) and vacuum heat-insulating plate 72 (A) each other, the core 9 of vacuum heat-insulating plate 71 (A) and all non-existent non-domain of the existence NC of core 9 of vacuum heat-insulating plate 72 (A) is formed.
This vacuum heat-insulating plate 71 (A) side is equivalent to the first wall unit, and vacuum heat-insulating plate 72 (A) side is equivalent to the second wall unit.
In addition, in the part opposite with above-mentioned non-domain of the existence NC of interior case dividing body 5 (A), the bonding side, inner space being arranged on body of thermal insulating box 1 of heat-insulating material 20.
Observe from right side, this heat-insulating material 20 is positioned at distinguishes overlapping position with the core 30 of the core 9 of vacuum heat-insulating plate 71 (A) and vacuum heat-insulating plate 72 (A).Thereby, it is possible to reduce the space outerpace of heat from body of thermal insulating box 1 enters the inner space of body of thermal insulating box 1 situation by non-domain of the existence NC.
In addition, be not limited to above-mentioned each embodiment, suitably can change in the scope not departing from spirit.