TW536614B - Refrigerator - Google Patents

Abstract

A vacuum heat-insulation board made of inorganic fiber is employed as an incombustible heat-insulator to increase the incombustibility of an insulating material used in a refrigerating body. Further, by improving the incombustibility of an insulating material, it becomes possible to use combustible refrigerant in a refrigerator and yet to keep it with assured safety and energy saving at the same time.

Description

536614 A7

536614 A7 ----------- B7 V. Description of the Invention (2) A ~~~-It is important to be in shape: the conventional thermal insulation materials cannot cope with these problems. The present invention is to solve the above-mentioned conventional problems. The purpose of the present invention is to find a kind of month-saving refrigerator. The refrigerator is installed in the refrigerator box and uses a refractory vacuum insulation made of a refractory plate-shaped inorganic fiber formed body. To prevent it from being burned to the refrigerator cabinet due to external fire, and can still be used safely even though flammable refrigerant is used. DISCLOSURE OF THE INVENTION In order to solve the foregoing problem, the refrigerator of the present invention is provided with a vacuum insulation body and a foamed resin insulation body in a heat insulation box. The vacuum heat insulation system covers a plate-shaped inorganic fiber formed body with a gas barrier film and makes Internal decompression. By arranging a refractory vacuum insulation body composed of the aforementioned plate-shaped inorganic fiber formed body in the heat insulation box, the fire resistance is more improved than when only a foamed resin body is used, and as a result, the fire resistance of the heat insulation box can be improved. . Therefore, it can achieve the effect of promoting the fire resistance of the thermal insulation box to the external fire, and can obtain a refrigerator with a higher safety than the conventional ice phase. In addition, by arranging a vacuum insulation body, the amount of foamed resin body used in the heat insulation box can be reduced, and the heat insulation box can be thinned due to the improved heat insulation performance. As a result, the total amount of the foamed resin to be used can be further reduced. Therefore, as the amount of the foamed resin body used decreases, in the event of post-firing to the heat-insulating material, the amount of organic gas generated is reduced, and a refrigerator with higher safety can be obtained. In addition, since a plate-shaped inorganic fiber formed body is used, a refrigerator box having excellent flatness, light weight, and productivity can be obtained. In addition, the refrigerator of the present invention has a thermal insulation material in a space formed by an inner box and an outer box, and is formed by a plate-shaped inorganic fiber on the side of the box outside the space. (Mm) C Please read the notes on the back before filling this page)%,., A ^ 1 丨 -line 丨 -5- 536614 A7 ----—_ —_ B7_ V. Description of the invention-_ 冓 成Vacuum insulation body. At this time, by arranging a refractory vacuum heat insulator on the outer side of the refrigerator, even if it is burned from the outside of the refrigerator, the vacuum heat insulator is also difficult to burn, so it is difficult to ignite the foamed resin body, and to further enhance the box body. Fire resistance. In addition, since the door body also uses a heat-insulating material composed of a refractory plate-shaped inorganic fiber formed body, the fire resistance of the heat-insulating portion of the refrigerator door body to the external firing of the refrigerator can be improved. Moreover, the refrigerator of the present invention has a partition body that separates the interior of the refrigerator independently, and a vacuum insulation body composed of a plate-shaped inorganic fiber formed body is arranged in the partition box. Therefore, even if any one of the freezer compartment or the refrigerating compartment in the refrigerator is burned due to external burning, it is difficult to burn the partition box to prevent the burning from spreading to the other room, and a highly safe refrigerator can be obtained. . Moreover, the refrigerator of the present invention is a person who arranges a plate-shaped inorganic fiber formed body in a closed space formed between the outer box and the inner phase of the refrigerator box and decompresses the space, and the closed space does not have foaming resin. body. Therefore, the fire resistance can be greatly improved, and the safety can be jumped because no organic gas is generated by the foamed resin body during the post-firing, and the heat insulation performance can be greatly improved because the heat insulation box itself can be used as a vacuum heat insulation box. . The plate-like inorganic fiber forming system contains at least silicon dioxide. Due to the use of inorganic fibers containing sulphur dioxide, a vacuum thermal insulator with good thermal properties and low cost can be obtained. The plate-like inorganic fiber forming system contains at least alumina. Due to the use of inorganic fibers with an oxide inscription or an increase in the content of the oxide inscription, this paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm)-6-5. Description of the invention (4) The heat resistance is further improved, Moreover, the wealth of the vacuum insulation body constructed in this way is further improved. Brief Description of the Drawings Fig. 1 is a sectional view of a refrigerator according to an embodiment of the present invention. Fig. 2 is a cross-sectional view of the vacuum heat insulator according to the embodiment of the present invention. Fig. 3 is a sectional view of a refrigerator according to a second embodiment of the present invention. BEST MODE FOR IMPLEMENTING THE INVENTION Hereinafter, an embodiment of the present invention will be described with reference to the drawings. (Embodiment 1) FIG. 1 is a sectional view of a refrigerator according to Embodiment 1 of the present invention. Refrigerator body! T is composed of an adiabatic box 2, a partition box 3, a door body 4, and a compressor 5, a condenser 6, a capillary tube 7, and an evaporator 8 which are used to constitute a cold old battery. The aforementioned heat-insulating box 2 and door body 4 are composed of an outer box 9 formed by press-molding an iron plate or the like, and an inner box 10 formed of an ABS resin or the like. The space formed by the aforesaid heat-insulating box 2 and door body 4 is the inside of the refrigerator, and is divided by the partition box 3 as the upper and lower spaces. The upper part forms the refrigerating compartment 11 and the lower part forms the freezing compartment 12. Therefore, the compressor 5, the condenser 6, the capillary 7, and the evaporator 8 are sequentially formed into f pieces and connected to form a cold; eastern circulation. Isobutane with HC refrigerant is enclosed in the intermediate cooling beam cycle of this embodiment as the refrigerant. The aforementioned evaporator 8 is provided in the freezing to 12 and is configured to send cold air into the refrigerating compartment u through the baffle 13. Further, the evaporator 8 may be provided at two places of the refrigerating compartment 11 and the freezing compartment 12 and connected in parallel or in parallel to form a refrigeration cycle. The space 14 of the heat insulation box and the space 15 of the door body 4 are provided with a vacuum 536614.

Thermal insulator and foamed resin insulator 17. The foamed resin insulator 17 in this embodiment is a hard urethane foam, and cyclopentane is used as a foaming agent to make the wool / bag. A vacuum insulator 16 is disposed in the 'dividing box 3'. / The vacuum heat insulator 16 in this embodiment is made of a plate-shaped inorganic fiber, and the core material is covered with a gas barrier film, and the inner 4 is decompressed to form the vacuum heat insulator 16. The The constituent materials of the plate-shaped inorganic fiber formed body are not particularly limited, and there are oxidation domain dimension, m dimension, stone dioxide fiber, oxidized fiber, glass weave, rock wool, sulfur fiber, silicon carbide fiber, and potassium titanate. Inorganic fibers such as fibers and magnesium sulfate fibers can also be made into a single material. In addition, the fiber diameter of inorganic fibers is preferably 10 μηι or less, more preferably 5 μηι or less, and 3 μηι in terms of thermal insulation performance. The following is particularly desirable. Although it may be only fibrous, an inorganic binder or an organic binder may be used to form an aggregate. The aforementioned inorganic binder is not particularly limited, and colloidal silica, water glass, low Known materials such as melting point glass, alumina sol, silicone resin, etc. In addition, the aforementioned organic bonding j is not particularly limited, and thermosetting resins such as various resins, epoxy resins, and urea resins can be used; , Methacrylic acid ester, ethyl acrylate, butyl acrylate, cyanoacrylic acid, methyl methacrylate, ethyl methacrylate, butyl methacrylate, etc. Dilute acid resin; polyesters such as polyethylene terephthalate, butylene terephthalate, polyethylene terephthalate, etc .; poly housewives, polyethylene, polystyrene, polyvinyl acetate , Polyvinyl alcohol, polypropylene span, or thermoplastic resins such as polyamide resins, etc. This paper size applies to China National Standard (CNS) A4 specification (210X297 mm) (Please read the precautions on the back before reading) (Fill in this page) •, ^ τ— [Line ----- -8- V. Description of the invention (6) The content of organic viscose, if it is caused by fire resistance, or inorganic fiber: after a period of time, From the viewpoints of density or density, it is preferably less than 10%, and more preferably less than 5%. These adhesives can also use two or more kinds of this compound. Furthermore, the commonly used plasticizers can be used. Agent, heat-stable d-light urns, fillers, etc. are used after mixing. For the above examples, you can mix It can be used together or diluted with water or a known organic solvent. The inorganic fibers can be coated by coating the adhesive or its diluent, or immersed in the aforementioned adhesive or its diluent to make the fibers stick. After the adhesive is attached, if the adhesive is a diluent, the solvent is dried as needed to form a plate-shaped inorganic fiber formed body by compression or heating. The inorganic fiber is dispersed in the aforementioned adhesive by rhenium inorganic fibers. In the diluent, it can be prepared by further copying. Σ Although the density of the plate-shaped inorganic fiber formed body produced as described above is not particularly limited3, it is preferable from the viewpoint of maintaining the shape of the formed body ' It is more than 80 kg / m, and from the viewpoint of thermal insulation performance, it is preferable to be less than or equal to 4:00, and more preferably more than 150 kg / m3 and less than 300 kg / m3. The one shown in FIG. 2 is a cross-sectional view of the vacuum heat insulator 16. The plate-shaped inorganic fiber molded body 18 is filled in a gas barrier film 9 as an outer cover material, and the internal pressure is reduced to about 30 Pa. There is no particular limitation on the material composition of the gas-barrier film that covers the core material to provide an air-tight part inside. For example, the outer layer is I-p-ethylene dibenzoate, and the middle layer is Aluminum (hereinafter referred to as A1) foil, the innermost layer is a plastic laminated film composed of a high-density polyethylene resin, the outermost layer is a polyethylene terephthalate resin, and the middle layer is ethylene glycol with an eighth vapor deposition layer. &Quot; Description of the invention (埽 -vinyl alcohol copolymer resin (commercially produced ρνΛ τ VAL 'KURARAY Co., Ltd.), the innermost layer is high-density polyethylene resin, etc. The structure of the plastic laminated film is made into a bag-like outer cover material. The characteristics of the transfer material «L only ^ ^, the outermost layer is used to correspond to the impact temple 'the middle layer is used to ensure the sclera barrier of the Yangbanyangyang, and the innermost layer is used to close by heat and close. Therefore, if both Afc and t A are used to achieve these goals, then all known materials

枓 can be used, and then in the ancient, soil L. In law, stab resistance can be improved by attaching the outermost layer with 4 grease resistance, etc., or two layers of ethylene-vinyl alcohol copolymer resin with A1 瘵 coating on the middle layer. The innermost layer of heat fusion is preferably a high-density polyethylene resin if it has a tightness or chemical reactivity, but other than that, a polypropylene resin or a polyacrylonitrile resin may be used. Straight, the shape of the outer cover material can be a square sealed bag, a triangular bag, a cylindrical bag, an L-shaped bag, etc., and there are no particular restrictions. For the purpose of dehydration and deaeration of the core material, heat treatment may be performed before inserting the outer cover material. At this time, the heating temperature should be above 100 ° C if the dewatering is the lowest possible. When the reliability of the vacuum heat insulator 16 is further improved, a getter such as a gas adsorbent or a moisture adsorbent may be used. The adsorption mechanism may be any of "physical adsorption", "chemical adsorption", "storage", "acquisition", and the like, but is preferably a substance that can function as a non-evaporable getter. Specifically, it is a physical adsorbent such as synthetic zeolite, activated carbon, activated alumina, silica gel, sodalite, and hydrotalcite. 536614 A7 ---------— 67 __—___ • V. Description of the Invention (8) ^ ~-The aforementioned chemical adsorbent can use oxides of alkali metals or alkaline earth metals, or alkali metals or alkaline earth metals The hydroxides, etc., in particular, can be used as bell oxides, nitrous oxides, oxidized words, A oxide dances, M oxides, chlorine oxide locks, barium oxides, and barium hydroxides. In addition, calcium sulfate, magnesium sulfate, sodium sulfate, sodium carbonate, potassium carbonate, calcium chloride, lithium carbonate, unsaturated fatty acids, iron compounds, and the like can also effectively work. In addition, it is more effective to use barium, town, contract, record, titanium, titanium, and other materials or alloyed getter materials. Furthermore, since the aforementioned getter substance adsorbs and removes at least nitrogen, oxygen, moisture, and carbon dioxide, it is more effective to mix and use various kinds. In this way, the thermal conductivity of the real thermal insulator 16 produced by using the plate-shaped inorganic fiber formed body as a core material to display the thermal insulation performance is 0.0043 W / mK under a reduced pressure condition of 3. In addition, the thermal conductivity of a vacuum heat insulator made of open-cell urethane or powdered silicon dioxide as a core material is 0.0065 W / mK to 0.0075 W / mK at 30 Pa. Therefore, the vacuum thermal insulator 16 of this embodiment has a thermal insulation performance of about 15 times or more compared with the conventional vacuum thermal insulator. In this way, since the thermal insulation performance is very high, the thin vacuum thermal insulation body 16 can also ensure complete thermal insulation performance, so that the inner volume of the refrigerator body 丨 can be enlarged. Also, since the core material having a plate-shaped inorganic fiber formed body is used in the vacuum insulation body 6, a vacuum insulation body 6 having a thin and excellent planarity can be obtained, so that the heat insulation wall 2 can be formed into a thin and flat surface. Good sex. In addition, cutting, bending, dents, protrusions, and formation of through-holes are also very good in processability, so it can be easily manufactured with the shape of the refrigerator body 1 as the paper size and applicable Chinese National Standard (CNS) A4 specifications 210X297 mm)

Order I 1 ------- (Please read the precautions on the back before filling this page) -11- V. Description of the invention (9) A vacuum insulator 16 can be modeled as a vacuum insulator 16. For example, it is used by being bent along three sides of the heat insulation box 2 of the refrigerator body i, and by forming the shape, the edge portion of the refrigerator box can also be covered with a vacuum heat insulation body, so it can be made further-fire resistance Insulation box 2 of refrigerators with good and excellent heat insulation properties. Also, in the heat insulation box 2, parts that need to be thinner than other parts can be formed by one sheet, and the rest is formed by stacking two sheets. Easily made into the desired shape. In addition, since the core material of the vacuum heat insulator 16 is plate-shaped, it can also widely respond to any demand when laminated to a necessary thickness. In addition, when arranging the required piping or wires of the refrigerator body 丨 on the vacuum insulation body 16, a groove may be formed in the shape of the piping on the plate-shaped inorganic fiber formed body, and then the vacuum insulation body 16 may be made, or After the vacuum insulation is made, a groove is set, and a pipeline is arranged in the groove. In addition, the vacuum insulation body can also be directly pressed to form a groove with respect to the pipeline and the like along the inside of the case, and the vacuum insulation body 16 can also be arranged on the inside of the case. In this way, since the fiber aggregate is used, it can be easily formed, and the groove can be easily set. In addition, due to the use of inorganic fibers, the performance of the vacuum heat insulator 16 due to temperature rise when the resin foam 17 is foamed and filled in the space 14 formed by the refrigerator body 丨 the outer box 9 and the internal phase ο may be deteriorated. Vacuum insulation materials that are more organic than core materials can be controlled. At this time, the vacuum insulation using inorganic powder needs to be filled with powder in the inner bag before inserting the inorganic powder into the outer cover material. If the inorganic powder is not previously filled in the inner bag, the powder will be scattered when the outer material is evacuated. When filling the inner bag with powder to make a vacuum insulation, the size of the paper must be adjusted when the shape of the vacuum insulation is processed (_Α4⑽⑽536536) Description of the invention Adjust the shape of ㈣ before using it. For the core material, the shape processing only needs to cut or bend the plate-shaped core material to the required shape to obtain the vacuum insulation body of the desired shape, and the powdered vacuum insulation body is used to adjust the inner bag to the desired shape. On the other hand, because the inner bag is broken or the powder is on one side, the shape processing is limited, and the operation efficiency is extremely low. In this way, since the vacuum insulation material 16 which is a plate-shaped inorganic fiber formed body is a plate-shaped formed body, Compared with the use of inorganic powder, the work efficiency will be greatly improved when the vacuum insulation body 16 is made. In addition, the private order required when filling the powder in the inner bag can be omitted, and there is no concern about powder scattering, so the operating environment The core material does not fly away when the vacuum insulation body 16 is broken, so it does not cause deterioration of the working environment when the refrigerator is destroyed, and it is easy to destroy the vacuum insulation. The refrigerator of 16. In addition, since a non-powdered and fibrous material is used to form a molded body, the number of contact points between the fibers increases when the molded body is formed, and it is possible to produce a solidified product with an adhesive and the like, and it is easy to manufacture. In this embodiment, the heat insulation box 2 has a vacuum heat insulator 6 and a foamed resin heat insulator 17. The foamed resin heat insulation system can use hard amine ethyl acetate foam and phenol foam. Or styrene foam, etc., but it is not specifically specified. Moreover, the foaming agent used when foaming rigid ethyl amine foam foam is not specified, but from the viewpoint of protecting the ozone layer and preventing global warming Among them, it is preferably cyclopentane, isopentane, n-pentane, isobutane, n-butane, water (obstructing acid gas foaming), azo compounds, argon, etc., especially in terms of thermal insulation performance, and Cyclopentane is particularly ideal. This type of vacuum is used to place the vacuum heat insulator 16 on the outer box 9 side of the heat insulation box 2 and the foam resin heat insulator on the inner box 10 side. 7. This paper size applies to China National Standard (CNS) A4 (210X297 mm) ( (Please read the notes on the back before filling in this page)

-13- 536614 A7 _ B7 V. Description of the invention (11) The vacuum heat insulator 16 is arranged on the inner surface of the outer box 9, and then foamed and filled with the foamed resin heat insulator in the space 14 formed by the outer box 9 and the inner box 10. 17 to form a thermal insulation wall. Alternatively, the vacuum insulator 16 and the foamed resin insulator 17 may be integrally foamed, and the vacuum insulator 16 may be placed in the space formed by the outer case 9 and the inner case 10 with the vacuum insulator 16 at the side of the outer case 9 14 in. By arranging the refractory vacuum heat insulator 16 on the outer side of the refrigerator body 丨, the refractory resistance of the heat-insulating material to the external firing of the refrigerator body 1 can be further improved, and the safety can be improved. In addition, arranging a plurality of refractory vacuum heat insulators formed of a plate-shaped inorganic fiber formed body 18 on the back, side, and top surfaces of the refrigerator body 1 can improve the fire resistance of the heat insulation box 2 as a whole. Become a high security filial piety. Moreover, it can be effectively placed close to the cost surface or the heat insulation performance surface by being arranged on the side corresponding to the freezer compartment 12 or more on the side surface, the back surface, or the bottom surface of the heat insulation box 2. In this embodiment, a plate-shaped inorganic fiber molded body 18 is used for the door body 4 mounted on the refrigerator. The vacuum heat insulator 16 ′ used in the door body 4 has a vacuum heat insulator 16 using a plate-shaped inorganic fiber formed body 18 adhered to the inner or outer side of the door body 4, and the remaining space is filled with a foamed resin heat insulator 17. method. In addition, there is a method of first forming a multi-layer heat insulation plate by using the vacuum heat insulator 16 and the foamed resin heat insulator 17 and sandwiching the heat insulation plate inside the door body 4 or pasting it with glue V or the like. Further, there is a method of arranging a plate-shaped inorganic fiber molded body 18 inside the door body 4 and vacuum-evacuating the inside of the door body 4 to form the door body 4 itself as a vacuum heat insulator. Since the refractory vacuum heat insulator 16 is used in the door body 4, if the surroundings of the refrigerator body 丨 fire and burn, the effect that it is difficult to extend to the door body 4 can be achieved. This paper size applies to China National Standard (CNS) A4 (210X297 mm) (Please read the precautions on the back before filling this page)

-14- 536614

V. Description of the Invention (l2) Furthermore, in this embodiment, a partition box 3 for separating the interior of the refrigerator body independently is provided, and a vacuum insulation body 16 is provided in the partition box 3. It is also possible to form a partition box by arranging only the vacuum heat insulator 16 inside the partition box 3 and covering the outer frame 20 of the partition box made of ABS; bi-resin or pp resin. Also, the vacuum insulation body, the foamed resin insulation body and the partition box outer frame can be integrally formed to form the partition box body, or at this time, the partition box outer frame and the inner box can be integrally formed. Alternatively, a vacuum insulation body and a foamed resin insulation body can be made into a heat insulation plate in advance and placed in the outer frame of the separation box to form a separation box body, as long as the separation box body is a vacuum insulation body composed of a plate-shaped inorganic fiber formed body. That is, there is no particular limitation. By constructing the partition box as described above, and arranging a vacuum insulation body composed of a plate-shaped inorganic fiber formed body on the inner box side of the heat insulation box, a highly safe refrigerator can be manufactured, which fires and burns on the outside At this time, even if the door at the front of the refrigerating compartment is opened to burn the inside of the box, the fire can still be prevented from burning to another space separated by the partition box. Also, the refrigerator body 1 divided by the partition box 3 can be divided into a refrigerating compartment 11 and a freezing compartment 12, and the positional relationship among them is not limited to only the top cold; the east, the intermediate freezer, the bottom freezer, etc. In addition, large refrigerators and the like also have partition boxes in the horizontal direction, and any one of the left and right rooms can be a refrigerating room and a freezing room. The configuration method of the vacuum insulation body 16 of this embodiment mode is to apply the hot melt liquid to one side of the vacuum insulation body 16 or the vacuum insulation body 6 inside the outer box 9 or to the above two sides, Then, the vacuum heat insulator 16 is tightly pressed into the outer box 9, and the vacuum heat insulator 16 is adhered to the heat insulator 2 by applying pressure. Then, the space 14 formed by the outer phase 10 and the inner box 9 is made of hard amine formic acid paper. Standards are applicable to China National Standard (CNS) A4 specifications (210X297 public directors) (Please read the precautions on the back before filling this page)

-15- 536614 A7 ___B2___ V. Description of the invention (13) —- B_ Foam resin heat insulator 17 composed of B_foam is filled with foam. (Please read the precautions on the back before filling in this page.) Also, when the vacuum heat insulator 16 is arranged on the side of the heat insulation box 2, in order to make the vacuum heat insulator 16 fit the shape of the heat insulation box 2, for example, along the machine room ^ Shape, a vacuum insulation ㉙! 6 with a cutout can be arranged in the lower right of Figure 1. At this time, the vacuum insulation body can cover the entire side surface of the heat insulation box: it can cover only the heat insulation box portion corresponding to the freezer compartment 9 with large heat leakage, and most of the vacuum heat insulation bodies can also cover the sides. In addition, the vacuum heat insulator 16 provided on the heat insulation part of the heat insulation part 2 of the heat insulation box 2 of the freezer compartment 12 and the machine room 21 provided at the lower part of the back of the refrigerator body 1 is bent into a shape along the machine room 21. Since the vacuum heat insulator μ uses the inorganic fiber formed body 18 as a core material, the bending process is very easy and the productivity is excellent. The manufacturing method of the vacuum heat insulator 16 shown in Fig. 2 is shown below. The vacuum heat insulator 16 is formed by inserting a plate-shaped inorganic fiber formed body 5 having a thickness of 5 mm into a cover material 19 after drying at 14 ° C for 1 hour, and evacuating the inside to seal the opening portion. The aforementioned plate shape The chemical composition of the inorganic fibers used in the inorganic fiber formed body is about 60% of silicon dioxide, about 18% of alumina, about 17% of calcium oxide, and about 5% of the remaining inorganic matter, and the fiber diameter is about ㈤ ~ 3μηι. In contrast, an acrylic adhesive of about 5% is used as the adhesive, and the density of the formed body under atmospheric pressure is described as a cover material 19, and one side is made of polyethylene terephthalate (12 μΠ1) As a surface protection layer, the middle part is an aluminum foil (6 μιη), and a laminated film composed of 咼 density polyethylene (50 μηι) as a heat-seal layer, and the other side is made of I-ethylene dibenzate (2 μΐΏ). As the surface protective layer, the Chinese paper standard is applicable to China National Standard (0 ^ 5) A4 specification (210X297 male I) -16- 536614 V. Description of the invention (14) is composed of ethylene · ethinol copolymer resin (J 5 pm) with aluminum coating on the inside, A laminated film composed of high-density polyethylene (50 μηι) as a heat-seal layer. In addition, the outer cover material 19 is formed on the surface protective layer to improve abrasion resistance. In addition, the outer layer The shape of the bag of the material 19 is a square seal. (Embodiment Mode 2) Figure 3 is a cross-sectional view of a refrigerator according to Embodiment Mode 2 of the present invention. The refrigerator body is outside the head 22, the inner box 23 and its space. A plate-shaped inorganic fiber formed body j 8 is configured by a heat-insulating box 24. In the heat-insulating box 24, two or more plate-shaped inorganic fibers are overlapped and used. The outer box 22 and the inner box 23 are formed by thickness. It consists of a 0.5-sided iron plate, and the seams are sealed by welding to ensure the airtightness of the inner part. Also, a partition box ㈣ is also formed by an iron plate or the like. The partition box 25 is also equipped with a plate-shaped inorganic fiber molding. Body 18. In addition, the above-mentioned outer box 22 and the partition box 25 are provided with exhaust holes%, "so that the interior can be evacuated by vacuum, thereby the interior of the heat-insulating box 24 and the partition box 25 is drawn straight. After emptying, the exhaust holes 26 and 27 are sealed by welding to ensure the airtightness inside. 'In order to obtain the flatness of the back of the refrigerator, the protrusions of the aforementioned exhaust holes 26 can be cut off within the range that can maintain air tightness. The door body 28 is formed by an iron frame with a thickness of M legs and is internally formed. After arranging the plate-shaped inorganic fiber formed body, ρ is vacuum-evacuated, and the vent hole 29 is sealed with a dazzle connection. The evaporator 8 is arranged in the box of the refrigerator body and is frozen with the outside. The circulating parts are connected by pipes. At this time, the j ° / I e green and the heat insulation box 24 are insulated, and the joints between the inner box 23 and the outer box 22 of the box 24 are melted. Paper standards (where) from the standard (21 () > < 297) 536614 A7 ----~~ --_ B7 V. Description of the invention (15) — ~ ---—— The airtightness of the heat insulation box 24 is maintained. The plate-shaped inorganic fiber formed body 18 is formed into a depression along the shape of the aforementioned pipeline, and the pipeline is buried there. The shape of the plate is very easy to defend, and the depression can be easily formed. The content rate of this inorganic fiber is about 18. Since the addition of aluminum and the increase in crystallinity will increase the heat resistance temperature, if a plate-shaped inorganic fiber formed body 18 made of inorganic fibers with a higher content rate is used in a refrigerator, 'It can be made-a refrigerator with high security. In addition, in order to maintain the vacuum degree inside the thermal insulation box 24 or the door body 28, a gas adsorbent may be arranged inside. With such a structure and the absence of a foamed resin insulator on the heat insulation wall, the safety of the refrigerator is greatly improved. This is because in the event of external firing of the refrigerator, it is possible to suppress fire to thermal insulation due to non-organic thermal insulation materials, or to suppress the generation of organic gases from foamed resin insulation. At this time, the outer box and the inner box have good gas barrier properties and have excellent low thermal conductivity substances, but actually very thin metal plates such as iron plates and stainless steel plates have effective effects. When the interior of the outer box and the inner box are evacuated, the flatness of the surface of the refrigerator can be maintained. In production, it is only necessary to insert a plate-shaped inorganic fiber formed body instead of an inorganic powder into the outer box and the inner box, and then evacuate the interior, so the productivity or workability is excellent. In addition, due to the use of inorganic fibers, no gas is generated in the vacuum insulation body over a period of time, and the long-term reliability of the insulation box is also improved. In addition, by forming the plate-shaped inorganic fiber formed body into a structure containing at least silicon dioxide, a plate-shaped inorganic fiber formed body having excellent heat resistance and low cost can be obtained. In addition, by making the plate-shaped inorganic fiber formed body into a paper containing at least alumina, the paper size is in accordance with the Chinese National Standard (CNS) A4 (210X297 mm) (Please read the precautions on the back before filling in this page)

-18- 536614 A7 ______B7 V. Description of the invention (π) " ~~-Structure, and the more the alumina content, the older the heat resistance of the thermal insulation material, the higher the fire resistance of the plate-shaped inorganic fiber formed body . In addition, the shaped inorganic fiber formed body may have other components, and the remaining inorganic substances may be calcium oxide, hafnium oxide, iron oxide, titanium oxide, oxidized side, sodium oxide, residual oxide, sulfuric acid, magnesium sulfate, silicon carbide, and titanium. Sour acid, chromium oxide, zinc oxide, etc. are not specified. ^ In addition, the refrigerator of this embodiment uses HC refrigerant, which has less influence on global warming, as the refrigerant. As mentioned above, if a flammable refrigerant is used, it is more important to take measures against fires than when the conventional HCFC refrigerant or CFC refrigerant is used, but by using the thermal insulation of the inorganic fiber formed body described in this embodiment Can provide a more secure refrigerator. Therefore, a refrigerator that can coexist with safety and global environmental protection will be provided. INDUSTRIAL APPLICABILITY The refrigerator of the present invention as described above is configured to use a plate-shaped inorganic fiber formed body in a heat-insulating box, and further has a vacuum heat-insulating body covered with a gas-barrier film and decompressing the inside. . Therefore, the fire resistance is improved as compared with the use of a heat insulating material having only a foamed resin body, and as a result, the fire resistance of the heat insulation box is improved. Therefore, the refractory effect of the adiabatic cabinet on the external burning can be achieved, and a refrigerator with higher safety than the conventional refrigerator can be obtained. [Nomenclature of components] 1 ... Fridge body 5 ... compressor 2 ... insulation box 6 ... condenser 3 ... partition box 7 ... capillary tube 4 ... door fan 8 ... evaporator China National Standard (CNS) A4 specification (210X297 mm) (Please read the notes on the back before filling this page), OK | I line — -19- 536614 A7 B7 V. Description of the invention (Π) 9… Outer box 10 … Inner box 11 ... refrigerating chamber 12 ... freezer chamber 13 ... stretcher board 14 .. space for thermal insulation box 15 .. space for door body 16 .... vacuum heat insulator 17..foam resin insulation Body 18... Plate-shaped inorganic fiber formed body 19... Gas barrier film (outer cover material) 20 .. Outer frame of partition box 21.... Machine room 22. Outer box 2 3. Inner box 24.. Box 25 .. Separated boxes 26, 27, 29 ... J non-gas 28 .. Door body 30, 31 ... Seam part (Please read the precautions on the back before filling this page) This paper size Applicable to China National Standard (CNS) A4 specification (210X297 mm) -20-

Claims (1)

A refrigerator is provided with a refrigeration cycle that connects a compressor, a condenser, a capillary tube, and an evaporator in a ring; and the 'refrigeration cycle described above is provided with a flammable refrigerant and has a free surface. For the inner box formed inside the refrigerator and the outer box facing the outside of the refrigerator, at least the space of the aforesaid box is provided with a heat-insulating material composed of a plate-shaped inorganic fiber formed body, and the heat-insulating material is a loan The gas-barrier film covers the aforementioned plate-shaped inorganic fiber formed body, and a vacuum insulator having a reduced internal pressure. For example, the refrigerator in the scope of application for patent item i, wherein a space of the heat insulation box is further provided with a foamed resin body. For example, the refrigerator in the second scope of the patent application, wherein the above-mentioned outer side of the heat-insulating box is provided with the aforementioned vacuum heat-insulating material. For example, in the refrigerator of any one of the scope of application for patents, the space of the aforementioned heat insulation box of the door body installed on the ice phase is provided with the aforementioned vacuum insulation material. For example, the refrigerator in the scope of application for the second patent, which has a partition box 将 which separates the interior of the refrigerator into a separate iL space, and the space of the partition box is provided with the aforementioned vacuum heat insulator. If applied, the refrigerator of item 5 of the monthly patent scope, wherein the partition box system is integrally formed by the aforementioned insulated box. A refrigerator is provided with a refrigerating cycle which connects a compressor, a condenser, a capillary tube and an evaporator in a ring; and the refrigerator also has an inner box facing the inside of the refrigerator and a refrigerator facing the outside of the refrigerator. The thermal insulation box formed by the outer box, and at least one thermal insulation material consisting of plate-shaped shields, stacked fiber formed bodies, etc. shall be checked in the 536614 A8 B8 C8 D8 patent application space of the aforementioned thermal insulation box, and the interior shall be reduced. 8. If the refrigerator in the scope of application of item i or item 7 of the patent application, the fiber forming system contains at least stone dioxide. 9. If the refrigerator in the scope of the application for item 1 or item 7, the fiber forming system contains at least an oxide name. Which the plate-shaped inorganic which the plate-shaped inorganic (Please read the precautions on the back before filling in this page} , Yiding | This paper size applies to China National Standard (CNS) A4 specifications (210X297 mm) -22-