CN102889741B

CN102889741B - Refrigerator

Info

Publication number: CN102889741B
Application number: CN201110302421.6A
Authority: CN
Inventors: 山崎康位
Original assignee: Hitachi Appliances Inc
Current assignee: Hitachi Global Life Solutions Inc
Priority date: 2011-07-19
Filing date: 2011-09-28
Publication date: 2015-05-13
Anticipated expiration: 2031-09-28
Also published as: KR101303440B1; JP5414751B2; KR20130010815A; JP2013024439A; CN102889741A

Abstract

An object of the invention is to provide a refrigerator with a vacuum heat insulation material having an increased width in accordance with the large-sized refrigerator and inhibiting decrease in heat insulation efficiency. The refrigerator is provided with a heat insulation unit comprising the vacuum heat insulation material and a foamed heat insulation material, and the vacuum heat insulation material comprises a plurality of fiber aggregates each having a projection part of 30-60 mm; a core material formed by combining the plurality of fiber aggregates such that spaces are formed between the projection parts; and a packaging material which is used for accommodating the core material and is compressed to fill the spaces between the projection parts.

Description

Refrigerator

Technical field

The present invention relates to refrigerator.

Background technology

In recent years, from the energy-saving aspect of refrigerator, vacuum heat insulation materials is must obligato parts.

Vacuum heat insulation materials the core material with spacer function is inserted to have in the outsourcing material of gas-barrier property, reduces pressure and the material closed to inside.

In addition, nearest refrigerator because food is sufficient, the demand such as universal of a large amount of shopping and there is the tendency that maximizes.With the maximization of refrigerator, vacuum heat insulation materials also needs to maximize, but needs large-scale manufacturing equipment like that, therefore cannot increase the tabular size of vacuum heat insulation materials simply.In addition, large-scale manufacturing equipment refers to the drying oven etc. of the moisture that the raw cotton removing vacuum heat insulation materials comprises.Make drying oven maximization nature can produce large cost of equipment, and can energy consumption be produced in the occasion manufacturing undersized vacuum heat insulation materials.

In realistic situation, the width of vacuum heat insulation materials is made about 500mm by each manufactory, if exceed this size, cannot deal with existing equipment.

That is, with maximization, the energy-saving of refrigerator, such as, by the occasion of the width expansion of refrigerator to 700mm ~ 800mm, the back part etc. vacuum heat insulation materials being disposed in refrigerator is difficult to.

In order to deal with this problem, there is the scheme by combining multiple core material to manufacture the vacuum heat insulation materials increasing width.As the program, such as, there are Japanese Unexamined Patent Publication 5-248592 publication (patent document 1), Japanese Unexamined Patent Publication 7-332585 publication (patent document 2).

Prior art document

Patent document 1: Japanese Unexamined Patent Publication 5-248592 publication

Patent document 2: Japanese Unexamined Patent Publication 7-332585 publication

But the slab core material shown in these patent documents is by use organic bond and the densification plank of solid or calcium silicates formed body.

In addition, the slab core material shown in these patent documents increases the occasion of width in the multiple core material of combination, in order to suppress, from the radiant heat that distributes of the straight ground of the seam of slab core material, to need to make slab core material overlap with the shape of complexity.

Summary of the invention

Therefore, the object of the present invention is to provide to possess and as one man increase width with large-scale refrigerator, and inhibit the refrigerator of the vacuum heat insulation materials of the decline of heat-insulating property.

In order to solve above-mentioned problem, such as, adopt the structure described in protection domain.The application comprises the method for the above-mentioned problem of multiple solution, if enumerate one of them example, in the refrigerator then possessing vacuum heat insulation materials and foamed thermal insulating in insulation, above-mentioned vacuum heat insulation materials possesses: the fiber assembly of stacked more than three layers also has multiple fiber assemblies of the protuberance of 30 ~ 60mm; The core material of the plurality of fiber assembly is combined in the mode forming space between each above-mentioned protuberance; And hold the outsourcing material of this core material, compress in above-mentioned outsourcing material, with the above-mentioned space between the above-mentioned protuberance of landfill.

Effect of the present invention is as follows.

According to the present invention, can provide to possess and as one man increase width with large-scale refrigerator, and suppress the refrigerator of the vacuum heat insulation materials of the decline of heat-insulating property.

Accompanying drawing explanation

Fig. 1 is the longitudinal section of the refrigerator of embodiments of the present invention.

Fig. 2 is the sectional view of the vacuum heat insulation materials of Fig. 1.

Fig. 3 is the key diagram of raw cotton before the compression of the vacuum heat insulation materials of Fig. 2, decompression.

The raw cotton of Fig. 3 loads in outsourcing material and the figure reduced pressure by Fig. 4.

Fig. 5 is that key diagram is amplified in the P portion of Fig. 4.

Fig. 6 is the figure raw cotton of Fig. 3 being configured in the state in inner bag or outsourcing material.

Fig. 7 is the figure of the configuration that the raw cotton different from Fig. 6 is described.

Fig. 8 is the sectional elevation of the refrigerator of embodiments of the present invention.

Fig. 9 is that use two utilizes binding agent or adds thermocompression bonding method and the slab core material of compression molding core material to be loaded in outsourcing material and to reduce pressure, thus manufactures the key diagram of the occasion of vacuum heat insulation materials.

Figure 10 will utilize binding agent or add thermocompression bonding method and compression molding, the slab core material with multiple step difference load in outsourcing material and reduce pressure, thus manufactures the key diagram of the occasion of vacuum heat insulation materials.

Figure 11 is the key diagram using fiber assembly to manufacture the occasion of vacuum heat insulation materials.

In figure:

1-casing, 2-outer container, 2a-top board, 2b-backplate, 2c-base plate, 2d-side plate, case in 3-, 4-adiabatic space, 5-foamed thermal insulating, 5a-stoste, 6-vacuum heat insulation materials, 7-core material, 8-inner bag, 9-outsourcing material, 10-raw cotton, 11-fiber assembly, 12-protuberance, 13-space, 14-radiating tube, 15-second vacuum heat insulation materials, 16-groove, 17-recess.

Detailed description of the invention

In order to improve the wall thickening realizing vacuum heat insulation materials for the purpose of heat-insulating property, the raw cotton such as such as stacked more than three mineral wools, and use binding agent or heat etc. together, compression molding is carried out to mineral wool and makes slab core material, and this core material is made the vacuum heat insulation materials of the maximization dealing with refrigerator.As this conventional example, there is the scheme shown in Fig. 9 ~ Figure 11.Below these schemes are described in the drawings.

With regard to the material shown in Fig. 9, plural fiber assembly 51a, 51b are loaded in outsourcing material 53, and reduce pressure, stacked three raw cotton of this fiber assembly 51a, 51b, and the raw cotton end being positioned at the one deck in outside is extended 30 ~ 60mm and becomes protuberance 52.

In the drawings, protuberance before decompression is the state of solid line, if but start decompression, resistance then due to the space surrounded by protuberance is little, therefore the distortion such as core material bending are produced, with state end minus pressure condition bending sharp bottom the installation of the protuberance 52 shown in dotted line, and terminate the sealing operation of outsourcing material.

As shown in Figure 9, outsourcing material caves in F portion the vacuum heat insulation materials produced significantly, not only reduces later treatability and performance, also becomes and probably gives the state of larger infringement at bending part sharply to outsourcing material.

This be due to fiber assembly 51a, 51b use in advance binding agent or heat and compression molding, therefore the free degree of raw cotton is low, and protuberance 52 does not play the effect of landfill space.

In addition, the material shown in Figure 10 combinationally uses two slab core materials that binding agent or heat etc. are beforehand with stepped, and load in outsourcing material, reduces pressure, seal afterwards to outsourcing material.

Like this, there will not be the large depression shown in Fig. 9, with regard to the combination of stage portion, because the cutting of raw cotton or stacked etc. key element increase of rocking cause size S not necessarily, therefore must increase the target size in S portion, cause photothermal through increase.

In addition, the material shown in Figure 11 arranges protuberance 54 a side of two fiber assemblies, and is combined in the stage portion 55 of the opposing party by protuberance 54, therefore the problem of Fig. 9, Figure 10 is solved, but because the fiber assembly of combination is not symmetric shape, therefore productivity is poor, and cost increases.

Above, because the vacuum heat insulation materials shown in Fig. 9 ~ Figure 11 utilizes binding agent or heat etc. slab core material solid to be turned to the shape of regulation, therefore cannot be applicable to recycling.In addition, to when reducing pressure in outsourcing material, there is end face at slab core material especially in the possibility of the Q portion equivalent damage outsourcing material of protuberance 52,54 or Fig. 9.

In addition, need the fiber assembly preparing complicated shape, cause productivity difference and cost increase.

In addition, as shown in Figure 9, form the occasion of recess (F) on the way, likely hinder the flowing of foamed thermal insulating.

On the other hand, for the present invention, in the refrigerator that insulation possesses vacuum heat insulation materials and foamed thermal insulating, above-mentioned vacuum heat insulation materials possesses: the fiber assembly of stacked more than three layers also has multiple fiber assemblies of the protuberance of 30 ~ 60mm; The core material of the plurality of fiber assembly is combined in the mode forming space between each above-mentioned protuberance; And hold the outsourcing material of this core material, compress in above-mentioned outsourcing material, with the above-mentioned space between the above-mentioned protuberance of landfill.

Thus, coordinate the maximization of refrigerator, do not need to prepare special equipment, just can manufacture the wide vacuum heat insulation materials of width.

In addition, in the manufacture of this vacuum heat insulation materials, make to be positioned at owing to adopting outermost raw cotton to manufacture protuberance structure than the wide 30 ~ 60mm of other raw cotton, as long as therefore to inner bag interpolation fashionable with above-mentioned protuberance for coincidence benchmark in position carries out combining, workability, can not hinder the flowing of foamed thermal insulating when being disposed in adiabatic space.In addition, the refrigerator possessing the vacuum heat insulation materials not having large recess can be obtained.

Below, figure is utilized to be described embodiments of the present invention.In addition, Fig. 1 is the longitudinal section of the refrigerator of embodiments of the present invention, Fig. 2 is the sectional view of the vacuum heat insulation materials of Fig. 1, Fig. 3 is the key diagram of raw cotton before the compression of the vacuum heat insulation materials of Fig. 2, decompression, the raw cotton of Fig. 3 loads in outsourcing material and figure reduce pressure, Fig. 5 are the P portion amplification key diagrams of Fig. 4 by Fig. 4.

First, in FIG, 1 is the casing forming refrigerator main body.This casing 1 comprises outer container 2, interior case 3, foamed thermal insulating 5 and vacuum heat insulation materials 6 etc.

The maximization of refrigerator main body has the tendency of being undertaken by the A/F (width) of expansion refrigerator main body.Enlarged openings width with expand top board 2a, the backplate 2b of outer container 2, base plate 2c width corresponding.

Vacuum heat insulation materials 6 needs as one man to expand in the direction of the width with the top board 2a, backplate 2b and the base plate 2c that expand along with the expansion of the width of refrigerator.Also considered such as to configure two vacuum heat insulation materials and be applicable to top board 2a, backplate 2b and base plate 2c side by side, but at cost or to utilize the heat of outsourcing material to expand in (heat bridge) etc. be not preferred method.

On this basis, in fig. 2 the vacuum heat insulation materials 6 of present embodiment is described.Vacuum heat insulation materials 6 manufactures in the following manner: load in inner bag 8 using at least any one and the adsorbent (not shown) of the resin fibre layer as organic fiber aggregate or the mineral wool layer as inorganic fibre mat aggregate, make the slab core material of compressive state, utilize the outsourcing material 9 with gas-barrier property to wrap up, and reduce pressure in inside and outside packaging material material 9 to internal bag.In addition, as the resin fibre layer of core material 7, styroflex (polypropylene or polyethylene terephthalate etc.) resin fibre can be used.

Vacuum heat insulation materials 6 utilizes the outsourcing material 9 with gas-barrier property to wrap up core material 7 and adsorbent, to be arranged on vacuum packing machine and decompression to about vacuum 2.2Pa, after maintenance certain hour, close outsourcing material 9.If the thermal conductivity measuring apparatus of the automatic γ HC-074 model utilizing Ying Hongjing chance society to make measures the thermal conductivity factor by vacuum heat insulation materials obtained above, be then 2.2 ~ 2.5mw/mk, show the heat-insulating property of about more than 10 times compared with urethanes foamed thermal insulating etc.Therefore, if be used on the casing of refrigerator using this vacuum heat insulation materials 6 as heat-insulating material, then, compared with untapped refrigerator, significantly energy-saving effect can be obtained.

Then, to forming the inner bag 8 of vacuum heat insulation materials 6, outsourcing material 9 is described.

8 is inner bags.This inner bag 8 generally uses polyethylene film, but also can use polypropylene film, polyethylene terephthalate film, polybutene-terephthalate film etc., as long as hygroscopicity is low and can be thermally welded, is vented few material, is not limited to polyethylene film.

In addition, use the synthetic zeolite of physical adsorption type as adsorbent, as long as but the adsorbent of adsorption moisture or gas, also can use the chemical reaction type adsorbent such as silica gel or calcium oxide, calcium chloride, strontium oxide strontia.

With regard to outsourcing material 9, the low polypropylene film of hygroscopicity is being set as superficial layer, arrange aluminium coated as damp course at polyethylene terephthalate film, gas shielding layer arranges aluminium coated on ethylene-vinyl alcohol copolymer, and pastes for relative with the aluminium coated of damp course.Being pressed into regard to laminated structure with regard to outer covering material 54, is the four-layer structure of above-mentioned material, but if having the polyamide film or polyethylene terephthalate film etc. of equal gas-barrier property, heat-resisting, thorn intensity, is then not limited to said structure.

In addition, core material 7 can be do not utilize binding agent and solid, can be loaded by raw cotton 10 described later in inner bag 8 and reduce pressure, and becomes board-like material for compressive state.

At this, be the occasion of general inorfil at raw cotton 10, use the natural fibers such as mineral wool, glass fibre, alumina fibre, aluminosilicate fiber or kapok.

Then, Fig. 3 is used to be described fiber assembly 11.In addition, the raw cotton 10 forming this fiber assembly 11 cuts the material of necessary sized from the spool raw cotton being wound as reel, such as thickness is 100mm, width is 500mm.

Raw cotton 10b, 10c layer of the raw cotton 10a layer of length T1 of fiber assembly 11 overlap shown in Fig. 3, length T2.The raw cotton 10a of the layer of length T1 is positioned at stacked in the outer part than raw cotton 10b, 10c layer of length T2.

In addition, the difference of T1 and T2 is 30 ~ 60mm.In the present embodiment the position of outstanding this size 30 ~ 60mm is called protuberance 12.

In addition, produce skirt materials due to cutting reel raw cotton, but this end material also can be used to manufacture fiber assembly.

The plural fiber assembly had by making end extend the protuberance 12 of 30 ~ 60mm to be combined in the mode in formation space, centre with protuberance 12 and loads in inner bag, making the core material of tabular by compressing, to load in outsourcing material and to reduce pressure.Thus, the vacuum heat insulation materials utilizing the mode of the raw cotton landfill space 13 of protuberance and other parts to be out of shape is obtained.Thereby, it is possible to corresponding with in the wide adiabatic plane being assembled in large-scale refrigerator.

In addition, the reason that protuberance 12 makes 30 ~ 60mm be, raw cotton is more than 300mm under laminated arrangement, in the occasion that the size of protuberance is little, due to cut lengths and the stacked accumulation of rocking generation raw cotton of raw cotton.In addition, if excessive, then there is the danger that heat-insulating property declines.

The thickness of slab that has of manufacture like this is that in refrigerator, be disposed in adiabatic space be that about 30mm ~ 40mm locates for the vacuum heat insulation materials of 15mm.Its reason is, if adiabatic space is the position of below 30mm, even then improve the foamed thermal insulating of mobility, also there is the danger of polyurethane flowing when hindering foaming.

As illustrated in fig. 3 conjugate fiber aggregate 11,11 time, form the space 13 surrounded by the end of protuberance 12 and raw cotton 10b.By using the fiber assembly 11 of two same shapes manufactured by identical production line, and a side of fiber assembly reversally being combined, easily can expand the width of vacuum heat insulation materials.

In addition, be the raw cotton of 100mm by stacked threeply degree, the vacuum heat insulation materials that thickness of slab is 15mm can be made.

The fiber assembly 11,11 combined like this is loaded in inner bag 8, this inner bag 8 is bled and compresses, thus utilize raw cotton, such as raw cotton 10a, 10b landfill space of protuberance 12 and other parts, and also utilize the compression landfill space of raw cotton when reducing pressure.

Fig. 5 is the P portion enlarged drawing of Fig. 4.Under the state of Fig. 3, under the state that the position surrounded in the end by protuberance 12 and raw cotton 10b has space 13, if reduce pressure in outsourcing material 9, air then in space 13 is drawn, and protuberance 12 is also pulled to side, space 13 certainly, the end of raw cotton 10b is also pulled to side, space 13, thus landfill space 13 as shown in Figure 5.Its reason is, because raw cotton 10 does not utilize the solid such as binding agent or heat, therefore raw cotton utilizes the negative pressure in space 13 to be out of shape.

Thus, space 13 can not become the recess sharply illustrated in fig. 8 in conventional example, and convenience and heat-insulating property can not be made to worsen.

Then, in Fig. 6, Fig. 7, the combined method of fiber assembly is described.In addition, Fig. 6 be the figure of the combined method of the raw cotton of key diagram 3, Fig. 7 in order to key diagram 5, be the figure of the combined method that the raw cotton different from Fig. 5 is described.

In the drawings, 11 represent fiber assembly, and 12 represent protuberance, 13 representation spaces.With vacuum heat insulation materials 6 expansion width, such as expand about 750mm to, prepare T3 be of a size of 400mm, T4 is of a size of two fiber assemblies of 500mm.When this fiber assembly 11 is loaded in outsourcing material 9, so that flow chart can be carried out by the mode in the combination section of the longitudinal direction of the open view fiber assembly 11 of outsourcing material 9 (space 13).

Thus, due to can assembled state be observed, while to be configured in vacuum packaging equipment and to seal, therefore, it is possible to undesirable conditions such as accumulations when reducing assembling.That is, the combination shown in Fig. 7 of conventional example is owing to being cannot by the flow chart in the combination section of the longitudinal direction of the open view fiber assembly of outsourcing material (space 13), therefore has position to be difficult to overlap and the possibility that causes undesirable condition to increase.

At this, the core material of vacuum heat insulation materials has the effect guaranteed heat-insulating property He guarantee thickness of slab.In order to ensure these, tabular ground forms the supervision amount of the raw cotton of core material with about 1200g/m ²manage.Usually, thickness of slab is that the vacuum heat insulation materials of 5mm is by manufacturing raw cotton one deck boil down to 5mm.Therefore, in order to obtain the vacuum heat insulation materials that thickness of slab is 10mm, then stacked two-layer raw cotton, in order to obtain the vacuum heat insulation materials that thickness of slab is 15mm, then stacked three layers of raw cotton.

Present embodiment is applicable to the above-mentioned occasion obtaining the vacuum heat insulation materials thicker than thickness of slab about 15mm like that.In addition, the occasion being 4mm at one deck can obtain the vacuum heat insulation materials that thickness of slab is about 12mm.

Then, according to Fig. 8, the combination combination section of vacuum heat insulation materials 6 and the example of radiating tube are described.

In the drawings, 1 is casing, and 2 is outer containers, and 2b is backplate, and 2d is side plate, and 3 is interior casees, and 5 is foamed thermal insulatings, and 5a is the stoste of foamed thermal insulating 5, and 6 is vacuum heat insulation materials, and 12 is protuberances.

14 is radiating tubes, and this radiating tube 14 is arranged on side plate 2d, using side plate 2d as heat sink.But this radiating tube 14 becomes obstacle when stickup the second vacuum heat insulation materials 15.Therefore, the second vacuum heat insulation materials 15 is provided with as shown in figure the groove 16 for absorbing above-mentioned radiating tube 14.

If vacuum heat insulation materials 6 of the present invention, even if then do not arrange special groove, utilize the recess 17 being formed at the joint area being equivalent to adiabatic zone, radiating tube 4 can be configured.That is, as shown in Figure 6 illustrates, assemble in the mode forming space 13 between the protuberance 12 of fiber assembly 11, if to load in inner bag 8 and to compress, then form recess 17 in the outside of protuberance 12, radiating tube 14 can be configured at this.

During decompression, protuberance 12 integrally to side, space 13 depression, owing to having the raw cotton entering 13, space from raw cotton 10b, 10c side, therefore becomes the recess 17 of about 1 ~ 3mm.If utilize recess 17, then can configure the radiating tube 14 that diameter is about 4mm.

Usually, with regard to casing 1 filling with foam insulation materials 5 to refrigerator, be fixed in frothing clamp in backplate 2b mode upwards, stoste 5a is injected backplate 2d side, between outer container 2 as shown by arrows and interior case 3, or between vacuum heat insulation materials and interior case 3, start foaming upward, thus fill the foamed thermal insulatings such as urethane foam in adiabatic space.

In this process, above-mentioned vacuum heat insulation materials 6 is arranged and is fixed in adiabatic space.

The present invention owing to forming as above, therefore, it is possible to obtain following effect.

That is, insulation possess vacuum heat insulation materials and foamed thermal insulating refrigerator in, above-mentioned vacuum heat insulation materials possesses: multiple fiber assemblies with the protuberance of 30 ~ 60mm; The core material of the plurality of fiber assembly is combined in the mode forming space between each above-mentioned protuberance; And hold the outsourcing material of this core material, compress in above-mentioned outsourcing material, with the above-mentioned space between the above-mentioned protuberance of landfill.

In addition, above-mentioned multiple fiber assembly is contained in inner bag after configuring in the mode forming the above-mentioned space between above-mentioned protuberance at long side direction, be contained in above-mentioned outsourcing material with the state be contained in this inner bag, making thickness is more than 12mm, and width is more than 500mm.

Thus, coordinate the maximization of refrigerator, special equipment need not be prepared, just can obtain the vacuum heat insulation materials of width expansion.

In addition, make being positioned at outermost raw cotton the structure forming protuberance than the wide 30 ~ 60mm of other raw cotton owing to becoming, therefore when inserting in inner bag, as long as be that coincidence benchmark in position carries out combining with protuberance, improve workability, and the flowing of foamed thermal insulating can not be hindered when being disposed in adiabatic space.In addition, the refrigerator possessing the vacuum heat insulation materials not having large recess can be obtained.

In addition, form recess in the outside of above-mentioned protuberance, arrange radiating tube at this recess.Thus, the trough setting avoiding radiating tube especially in the processing of vacuum heat insulation materials side is not needed.

Claims

1. a refrigerator, possesses vacuum heat insulation materials and foamed thermal insulating in insulation, and above-mentioned vacuum heat insulation materials possesses core and holds the outsourcing material of this core, and the feature of above-mentioned refrigerator is,

Above-mentioned vacuum heat insulation materials also possesses multiple fiber assemblies of the protuberance with 30 ~ 60mm,

Above-mentioned core combines the plurality of fiber assembly in the mode forming space between each above-mentioned protuberance and forms,

Compress in above-mentioned outsourcing material, with the above-mentioned space between the above-mentioned protuberance of landfill.

2. refrigerator according to claim 1, is characterized in that,

Above-mentioned multiple fiber assembly is contained in inner bag after configuring in the mode forming the above-mentioned space between above-mentioned protuberance at long side direction, be contained in above-mentioned outsourcing material with the state be contained in this inner bag, making thickness is more than 12mm, and width is more than 500mm.

3. refrigerator according to claim 1 and 2, is characterized in that,

Form recess in the outside of above-mentioned protuberance, in this recess, arrange radiating tube.