JP2009024921A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator capable of securing both of energy-saving performance and large capacity without degrading heat insulating performance of a casing and an inner volume. <P>SOLUTION: In this refrigerator, radiation property of a radiation pipe can be improved, and heat leakage to the refrigerator from the radiation pipe and electric components can be significantly reduced by disposing a vacuum heat insulating material over the radiation pipe and the electric components such as a control board and a power source board in a state of being bent in the three-dimensional shape. Further as a thickness of a bent portion is not reduced, and heat insulating performance of the vacuum heat insulating material is not deteriorated, the heat insulating performance of the casing is improved, and the power consumption can be reduced. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a refrigerator in consideration of expansion of the internal volume and energy saving.

  In recent years, from the viewpoint of global environmental protection such as prevention of global warming, energy saving is also demanded for refrigerators. In addition, as the recent social background tends to work together and become a nuclear family, the number of households buying foods on weekends is increasing, so the need for larger refrigerators is increasing year by year. Yes.

  A conventional refrigerator has a compressor for circulating a refrigerant, and electric parts such as a control board and a power supply board, and these are self-heated and rise in temperature when the refrigerator is operated.

  For example, FIG. 5 is a cross-sectional view showing a conventional refrigerator disclosed in Patent Document 1, which is composed of an outer box 102 made of a top plate and a rear plate 103, an inner box 105 made of synthetic resin, and a heat insulating material 106. In the box body 101, a box-like box body 104 that is open on the top surface and the back surface is provided in a notch portion provided on the rear side of the top surface portion of the outer box 102, and an electrical component 107 such as a control board is accommodated therein. Some of them are closed with a closing plate 108 made of metal. According to the present invention, by providing the box 104 having a box shape open to the top surface and the back surface at the rear portion of the top surface, it becomes possible to use electric components having large self-heating, and the selection range of the electric components has been expanded. It is said.

  FIG. 6 is a cross-sectional view showing the refrigerator disclosed in Patent Document 2, and FIG. 7 is an enlarged cross-sectional view of a substrate portion arranged at the rear portion of the top surface of the box 212. The refrigerator includes a box body 212 including an outer box 213, an inner box 214, and a heat insulating material 215 filled between the outer box 213 and the inner box 214, and a ceiling wall 212 a and a rear wall of the box body 212. A receding portion 212c is formed by receding the outer box 213 at the corner where 212b intersects toward the heat insulating material, and the control board 220 is arranged on the box body 212 which is the receding portion and the ceiling wall 212a in the vicinity thereof, A cover 225 is provided so as to cover the control board 220. At this time, the heat insulation thicknesses t1, t2, and t3 between the ceiling wall 212a and the inner box 214, the receding box body 212 and the inner box 214, and the back wall 212b and the inner box 214 are substantially the same. Because it is set, heat penetration into the cabinet due to heat generation of the control board is suppressed.

  Further, Patent Document 3 relates to a vacuum heat insulating material. In a vacuum heat insulating material made of a core material and a jacket material whose fiber material is formed using a binder, after the vacuum heat insulating material is manufactured, a die press or the like is used. The groove is formed, but by providing the groove according to the refrigerant pipe arrangement of the refrigerator, the vacuum heat insulating material can be arranged so as to cover the refrigerant pipe, so that the coverage of the vacuum heat insulating material is improved and consumed. The effect of reducing the amount of electric power is obtained.

  The vacuum heat insulating material shown in Patent Document 4 is a material in which a core material made of a sheet-like molded body made of inorganic fibers is covered with a gas barrier film and the inside is sealed under reduced pressure. A groove is provided in the core material portion. Since it is bent and can be arranged over a plurality of surfaces other than the flat part, the coverage of the vacuum heat insulating material is increased and the heat insulating performance of a refrigerator or the like can be improved.

JP-A-5-87443 JP 2006-112658 A JP 2004-11708 A JP 2001-336691 A

  Although the refrigerator of patent document 1 is improving the heat dissipation of a self-heating component, the box body 104 which makes the box shape open | released to the top | upper surface and the back surface in the notch part provided in the back | upper surface part of the outer box 102 is provided. Since the electrical component 107 such as the control board is housed, the heat insulation thickness between the box body 104 and the inner box 105 is reduced, the heat leakage into the cabinet due to the self-heating component is increased, and the heat insulation performance is improved. It was a structure that lacked consideration for deterioration.

  In the refrigerator of Patent Document 2, the heat insulation thicknesses t1, t2, and t3 of the ceiling wall 212a and the inner box 214, the box body 212 and the inner box 214 as the retreating part, and the back wall 212b and the inner box 214 are set to substantially the same thickness. By setting, it has a structure that suppresses the amount of heat leakage such as heat intrusion into the warehouse due to heat generation of the control board, which was a problem of Patent Document 1, but instead of securing the heat insulation thickness, the control board 220 and its Since the cover 225 protrudes upward from the ceiling wall 212a, there is a problem that the appearance design is impaired. Further, when the height of the entire refrigerator is increased, there is a problem in the installation property such as the installation height. On the other hand, when the refrigerator is lowered, there is a problem that the internal volume is reduced as in the case of Patent Document 1.

  Since the vacuum heat insulating material of Patent Document 3 forms a groove by a die press or the like, it can be arranged so as to cover the refrigerant piping of the refrigerator, but the formation of the groove reduces the core material thickness of the groove, There was a problem in that the heat insulating performance deteriorated in the portion, and the effect diminished with respect to the coating area of the vacuum heat insulating material. Moreover, since the fiber material of the core material is cut by processing the groove in the core material in a state where atmospheric pressure is applied by a die press or the like, the heat insulation performance is further deteriorated and deterioration with time is large. There was also a problem. In addition, since a space is formed around the groove and the refrigerant pipe, it has been raised as one of the factors that deteriorate the heat accumulation performance of the refrigerator box body due to gas accumulation during foaming urethane filling or convection.

  Since the vacuum heat insulating material of patent document 4 processes a groove | channel in a core material similarly to patent document 3, the heat insulation performance deteriorates by the thickness reduction of a core material, or the inorganic fiber of a groove part being cut | disconnected, etc. was there.

  The present invention provides an energy-saving refrigerator that suppresses deterioration of the amount of heat leakage from a box and increases the internal volume.

  In order to solve the above problems, the present invention provides a refrigerator in which a heat insulating material is disposed in a space formed by an outer box and an inner box, and a recess for storing a self-heating component is provided in a part of the outer box. By disposing a vacuum heat insulating material on the surface of the concave portion on the heat insulating material side, heat leakage into the cabinet due to a self-heating component such as a control board is suppressed. Depending on the size of the self-heating component, the depth of the recess may be increased, and in this case, the heat insulation thickness of the refrigerator box becomes thin and heat leakage into the cabinet increases, so a vacuum heat insulating material should be arranged. Insulation performance can be improved.

  Further, a heat insulating material is disposed in a space formed by the outer box and the inner box, and a heat radiating pipe disposed so as to be in contact with the inner surface of the outer box, and a rear side or a rear part of the outer box top surface portion. In the refrigerator provided with a recess for storing either or both of an electrical component such as a control board and a power supply board, a self-heating component such as a compressor, etc., a part of the projection surface of the heat radiation pipe and the inner box side of the recess By placing the vacuum heat insulating material on the top, it is possible to suppress the heat leakage into the cabinet by the heat radiating pipe arranged on the top surface for heat radiation, and to improve the heat radiation performance toward the ceiling of the outer box Is. In addition, heat leakage from the self-heating component into the cabinet can be greatly reduced.

  In addition, since the concave portion is a molded product made of a non-combustible synthetic resin material, it can have a structure that only fits into a notch provided in the outer box of the refrigerator, and the assemblability can be improved. Further, it is difficult to transfer heat generated from the self-heating component in the direction of the interior.

  In addition, since the vacuum heat insulating material is disposed so as to straddle the concave portion and the steel plate portion, not only serves to reinforce the molded product made of the synthetic resin material, but also from the synthetic resin material at the time of filling with urethane foam. It is possible to prevent urethane leakage from the fitting portion between the formed product and the outer box made of steel plate. Since there is a step in the steel plate portion, which is the outer box in the vicinity of the concave portion, the vacuum heat insulating material has a three-dimensional shape arranged across the step, and this serves as a guide plate for urethane flow . In addition, the synthetic resin member can be prevented from being deformed by the reaction heat of urethane that generates heat during filling with urethane foam. Originally, the purpose of using a molded product made of a synthetic resin material in the concave portion is to thermally insulate from the steel plate on which the heat radiating pipe is arranged, to have good assemblability with the steel plate, and from the self-heating parts. This is to lower the thermal conductivity and prevent electrical insulation in order to prevent heat leakage into the inside. Since the reaction heat temperature at the time of urethane foaming may be 100 to 130 ° C., the resin part may be deformed by heat in some cases. Normally, when synthetic resin material is used, ribs etc. are provided on the back surface (insulating material side) of the recess to reinforce it thermally and strongly. However, thermal deformation of the synthetic resin material can be achieved by placing a vacuum heat insulating material. Ribs are not required because the temperature is not reached. Even if the power supply board breaks out for some reason, it does not spread to the outside because it is provided with a metallic cover, and the recess is made of a non-flammable synthetic resin material. It does not spread. The vacuum heat insulating material disposed on the back surface (the heat insulating material side) of the concave portion also uses inorganic fibers as the core material, and therefore does not basically burn, so damage can be minimized.

  In addition, the vacuum heat insulating material is made of at least a core material made of inorganic fibers and a gas barrier outer packaging material, and the core material has a thickness of 6 to 15 mm, and thus made of the nonflammable synthetic resin material. The deformation due to heat at the time of urethane foaming of the molded product can be suppressed, and as described above, the reinforcing rib can be removed, and the shape of the part can be simplified. Further, if the thickness of the core material is at least 6 mm, the heat insulating performance of the refrigerator can be secured. In addition, although it can be used also about the thickness of the said core material exceeding 15 mm, since the flow space of urethane at the time of foaming urethane filling may become narrow, it is not preferable.

Further, a heat insulating material is disposed in a space formed by the outer box and the inner box, and a heat radiating pipe is disposed on the inner surface of the top surface of the outer box, and a self-heating component is disposed on the rear surface or rear surface of the outer box. In the refrigerator
Since a vacuum heat insulating material is disposed on a part of the projection surface of the heat radiating pipe and the self-heating component, the same effect as described above can be obtained.

  The vacuum heat insulating material includes a core material compressed and sealed by covering at least a flexible inorganic fiber laminate with an inner bag made of a synthetic resin film, and a synthetic resin film having a gas barrier film formed on at least a heat-welded layer. A laminated film composed of two or more layers, and an outer packaging material in which the heat-welding layers are faced to each other and the end portions are welded, and the ear portion of the inner bag is disposed in the ear portion of the outer packaging material, Since the inside of the material is sealed by reducing the pressure after releasing the sealing of the inner bag, since the core material has no hardened layer due to bonding between fibers or a binder, the above three-dimensional shape is relatively It can be made easily. For example, as described in Patent Document 4, in order to bend a core material in which inorganic fibers are formed into a sheet-like molded body, it is necessary to process a groove serving as a base point of bending. However, the vacuum heat insulating material of the present invention is a core material. Since the material is not molded, it has flexibility, and can easily be molded into an L-bending, a substantially Z-bending, or a shape in which a concave portion and a convex portion are partially paired. Since a groove or the like is not processed in the bent portion, there is no portion where the core material thickness is reduced, and there is no portion where the heat insulation performance is deteriorated. There are various methods and means for forming these three-dimensional shapes, such as the use of an automatic folding machine or jig, vacuum forming in a forming mold, etc., but the method and means are not particularly limited.

  In the present invention, the self-heating component means that the temperature rises to a high temperature during operation of the refrigerator such as a condenser, a heat radiating pipe, etc., in addition to an electric component such as a control board and a power supply board, and a compressor. Although parts are shown, it is not limited to these.

  According to the present invention, it is possible to suppress heat entering the interior from a heat generating member such as an electric component such as a control board or a heat radiating pipe, and the heat insulation thickness of the box is reduced by the arrangement of the electric parts such as the control board. However, since the heat insulation performance can be maintained without increasing the heat insulation thickness at the expense of the internal volume, it is possible to provide a refrigerator with high internal volume efficiency and high energy efficiency.

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

(Embodiment 1)
In the refrigerator shown in Embodiment 1 shown in FIG. 1, a refrigerator compartment 14, freezer compartments 15 a and 15 b, and a vegetable compartment 16 are formed in a box 10. The arrangement of the refrigerator compartment 14, the freezer compartments 15a and 15b, and the vegetable compartment 16 is not particularly limited to this.

  The box 10 includes an outer box 11 and an inner box 12, and a heat insulating portion is provided in a space formed by the outer box 11 and the inner box 12 to insulate each storage chamber in the box 10 from the outside. Yes. A vacuum heat insulating material 40 is disposed on either the outer box 11 side or the inner box 12 side, and a space other than the vacuum heat insulating material 40 is filled with a foam heat insulating material 13 such as rigid urethane foam. Arrangement | positioning of the vacuum heat insulating material 40 is a top | upper surface, a side surface, a back surface, a bottom surface, a door surface, etc., However It is not limited to these in particular.

  In addition, a refrigerator 18 is provided on the back side of the freezer compartments 15a and 15b to cool the refrigerator compartment 14, the freezer compartments 15a and 15b, the vegetable compartment 16 and the like to a predetermined temperature. A refrigeration cycle is configured by connecting a condenser and a capillary tube (not shown) including the cooler 18 and the compressor 20. Above the cooler 18, a blower 17 that circulates cold air cooled by the cooler 18 in the refrigerator and maintains a predetermined low temperature is disposed.

  Further, as the heat insulating material for partitioning the refrigerator compartment 14, the freezer compartment 15 a, the freezer compartment 15 b, and the vegetable compartment 16 of the refrigerator, heat insulating partitions 21 and 22 are arranged, respectively, and are configured by the expanded polystyrene 23 and the vacuum heat insulating material 40. The heat insulating partitions 21 and 22 may be filled with a foam heat insulating material 13 such as rigid urethane foam, and are not particularly limited to the foamed polystyrene 23 and the vacuum heat insulating material 40.

  In addition, an interior lamp 35 having a case 35a protruding toward the heat insulating material 13 is arranged on a part of the top surface of the inner box 12, so that the interior when the refrigerator door is opened is bright and easy to see. It is. The interior lamp 35 is not particularly limited, such as a light bulb, a fluorescent lamp, or a xenon lamp. Since the thickness of the heat insulating material 13 between the case 35a and the outer box 11 becomes thin due to the arrangement of the interior lamp 35, the vacuum heat insulating material 40 is arranged to ensure the heat insulating performance.

  Moreover, the recessed part 30 for accommodating electrical components 31, such as a board | substrate for controlling the operation | movement of a refrigerator, and a power supply board, is formed in the top-surface rear part of the box 10, and the cover 32 which covers the electrical component 31 is formed. Is provided. The height of the cover 32 is arranged so as to be substantially the same as the top surface of the outer box 11 in consideration of appearance design and securing the internal volume. Although it does not specifically limit, when the height of the cover 32 protrudes from the top | upper surface of an outer case, it is desirable to set it in the range within 10 mm. In connection with this, since the recessed part 30 is arrange | positioned in the state which only the space which accommodates the electrical component 31 in the heat insulating material 13 side is dented, from a viewpoint of ensuring internal volume, inevitably the heat insulating material between the recessed part 30 and the inner box 12 is provided. The thickness of 13 will become thin. For this reason, the vacuum heat insulating material 40 is arrange | positioned in the surface at the side of the heat insulating material 13 of the recessed part 30, and the heat insulation performance is ensured and strengthened. In the first embodiment, the vacuum heat insulating material 40 is a single vacuum heat insulating material formed in a substantially Z shape so as to straddle the case 35a of the interior lamp 35 and the electrical component 31 described above. The cover 32 is made of a steel plate in consideration of fire from the outside or ignition for some reason.

  Here, the arrangement of the vacuum heat insulating material 40 in the first embodiment will be described with reference to FIG. FIG. 2 is an enlarged cross-sectional view of a portion A in FIG. In the first embodiment, as shown in FIG. 2, the box body 10 in which the heat radiating pipe 50 is fixed to the inner surface of the top surface portion of the outer box 11 with the aluminum tape 50 a is used. The vacuum heat insulating material 40 is bent and formed into a substantially Z shape so as to straddle the surface of the concave portion 30 on the heat insulating material 13 side and the heat radiating pipe 50, and is pasted through an adhesive member 52 having flexibility and heat insulating properties. . In the first embodiment, heat leakage to the interior is further reduced by heat insulation at a portion near the high temperature portion such as the concave portion 30 where the heat radiating pipe 50 and the electric component 31 are arranged. It is not limited to.

  Although details of the vacuum heat insulating material 40 will be described later, since a binder is not used for the core material, the vacuum heat insulating material 40 has flexibility and can be easily folded without processing a groove or the like. When the core material is molded to a certain thickness with a binder, a hardened layer with a high binder concentration is often formed on the surface of the core material. Further, the heat insulation performance is deteriorated, for example, the thickness of the core material is reduced or the core material is cut. Since the core material of the first embodiment has a large repulsive force against the atmospheric pressure as well as flexibility, buckling does not occur in the inner part of the bend, so there is no decrease in the core material thickness at the bent part. Therefore, a bent shape can be obtained without deteriorating the heat insulation performance. In the first embodiment, bending is performed twice using a bending jig to obtain a substantially Z shape, but the bending method is not particularly limited to this. In the first embodiment, one piece of the vacuum heat insulating material 40 which is bent and formed into a three-dimensional shape is disposed. However, in consideration of assembling property and handling property, two vacuum heat insulating materials 40 or It may be divided into a plurality of sheets. However, in this case, since the heat insulation performance deteriorates due to the influence of heat (heat bridge) transmitted through the jacket material, it is important to increase the core material area.

  Next, the structure of the vacuum heat insulating material 40 used in Embodiment 1 will be described with reference to FIG. The vacuum heat insulating material 40 includes a core material 41, an inner packaging material 42 for holding the core material 41 in a compressed state, and a jacket material having a gas barrier layer that covers the core material 41 held in a compressed state by the inner packaging material 42. 43 and the adsorbent 44. The covering material 43 is disposed on both surfaces of the vacuum heat insulating material 40, and is configured in a bag shape in which portions of a certain width are bonded together by thermal welding from the ridgeline of the same size laminate film. In the first embodiment, the core material 41 is glass wool having an average fiber diameter of 4 μm as a laminate of inorganic fibers that are not bonded or bound with a binder or the like. About the said core material 41, since outgas decreases by using the laminated body of an inorganic fiber material, it is advantageous in heat insulation performance, but it is not limited to this in particular, For example, a ceramic fiber, rock wool, Inorganic fibers such as glass fibers other than glass wool may be used. Depending on the type of the core material 41, the inner packaging material 42 may be unnecessary. The laminate structure of the covering material 43 is not particularly limited as long as it has gas barrier properties and can be thermally welded. In the first embodiment, the outer layer material 43 has a three-layer structure of a surface layer, a gas barrier layer, and a heat welded layer. Laminate film, surface layer is provided with metal vapor deposition layer on resin film with low hygroscopicity, gas barrier layer is provided with metal vapor deposition layer on resin film with high oxygen barrier property, and metal vapor deposition layer faces surface layer and gas barrier layer Are pasted together. For the heat-welded layer, a film having low hygroscopicity was used as in the surface layer. Specifically, the surface layer is a biaxially stretched polypropylene film with aluminum vapor deposition or a biaxially stretched polyethylene terephthalate film with aluminum vapor deposition, and the gas barrier layer is a biaxially stretched ethylene vinyl alcohol copolymer resin film or aluminum with aluminum vapor deposition. A biaxially stretched polyvinyl alcohol resin film with vapor deposition was used, and the heat-welded layer was an unstretched polyethylene film or an unstretched polypropylene film. A gas barrier layer such as a metal foil or a resin film provided with a gas barrier film such as an inorganic layered compound or a resin gas barrier coating material, or a heat welding layer such as a polybutylene terephthalate film or polybutylene terephthalate with high oxygen barrier A co-extruded film of the above resin may be used. The purpose of placing a resin with low hygroscopicity on the surface layer and the heat-welded layer is that the above gas barrier layer film with high oxygen barrier property deteriorates due to moisture absorption. It suppresses the entire amount of moisture absorption. Thereby, also in the vacuum evacuation process of the vacuum heat insulating material 40, since the amount of moisture brought in by the jacket material 43 is small, the vacuum evacuation efficiency is greatly improved, leading to high performance. The laminate structure of the jacket material 43 is not particularly limited to a three-layer structure as long as it has moisture resistance, gas barrier properties, and heat weldability. Here, the laminate of each layer is generally dry-laminated using a two-component curable urethane adhesive, but is not particularly limited to this method, and is a method by coextrusion or thermal lamination. Alternatively, a combination method may be used.

  Moreover, although the polyethylene film which can be heat-welded in Embodiment 1 and the synthetic zeolite was used for the adsorbent 44 in the first embodiment, the encapsulating material 42 is not limited to these materials. The inner packaging material 42 may be a polypropylene film, a polyethylene terephthalate film, a polybutylene terephthalate film, etc., as long as it has a low hygroscopic property and can be thermally welded and has little outgas, and the adsorbent 44 may be any material that adsorbs moisture or gas. good.

The vacuum heat insulating material 40 according to Embodiment 1 having the above-described configuration was used in which the thickness of the core material 41 was set to 10 mm and the density of the core material 41 was set to about 250 (kg / m ³ ). As described above, the core material 41 is easy to bend because there is no binding of fibers by a binder or the like, and since there is no processing of a groove or the like in the bent portion, the thickness of the core material 41 is not reduced. There is no part to get worse. By disposing the vacuum heat insulating material 40, heat leakage into the cabinet due to the electrical component 31 and the heat radiating pipe 50 can be reduced, and furthermore, the heat radiating characteristics of the heat radiating pipe 50 can be improved. An energy saving effect of about 3% was obtained compared to the amount of power consumed when no was placed.

(Embodiment 2)
In the refrigerator shown in Embodiment 2 shown in FIG. 4, a recess 30 for storing an electrical component 31 such as a substrate for controlling the operation of the refrigerator or a power supply substrate is formed in the upper rear portion of the box 10. A cover 32 covering the electrical component 31 is provided. The height of the cover 32 is the same as that of the first embodiment except that the height of the cover 32 is substantially the same as the upper surface of the top plate 11a of the outer box 11 and is arranged so as not to be seen from the front of the box 10 in consideration of the appearance design. Therefore, the description is omitted.

  In Embodiment 2, since the recessed part 30 is arrange | positioned in the back surface, the workability | operativity at the time of maintaining the electrical component 31 is improving. As in the first embodiment, the recess 30 is formed of a non-combustible synthetic resin material, and is disposed in a state where only the space for housing the electrical component 31 is recessed on the heat insulating material 13 side. In order to compensate for the reduced thickness, a vacuum heat insulating material 40 is arranged to secure and enhance the heat insulating performance. In this embodiment, the vacuum heat insulating material 40 is a single large size vacuum heat insulating material formed in a substantially Z shape so as to straddle the recess 30 and the rear plate 11b of the outer box 11.

  Moreover, although the heat radiating pipe 50 is fixed to the inner surface of the top plate 11a of the outer box 11 with the aluminum tape 50a, the vacuum heat insulating material 40 is made of an adhesive having flexibility and heat insulating properties in order to suppress heat leakage into the cabinet and enhance heat dissipation. Affixed via member 52. The arrangement of the vacuum heat insulating material 40 is not limited to this arrangement as described above.

  In the second embodiment, the recess 30 is disposed on the upper portion of the rear plate 11b. However, the present invention is not limited to this, and a refrigerator disposed in the middle portion of the rear plate 11b or the like may be used. Further, a heat radiating pipe (not shown) may be disposed on the inner surface side of the rear plate 11b, and the vacuum heat insulating material 40 may be disposed across the surface of the recess 30 on the heat insulating material 13 side and the heat radiating pipe (not illustrated). .

  In the present embodiment, an energy saving effect of about 4% is obtained compared to the amount of power consumption when the vacuum heat insulating material 40 is not disposed on the inner surface of the top plate 11a.

  As described above, the refrigerator according to the present invention greatly reduces the heat leakage from the part where the self-heating parts are arranged during operation, and reduces the volume of the interior and the power consumption. Because it can, not only refrigerators, cooling equipment with large heat generation parts such as control boards and power supply boards, such as control boards and power supply boards placed on the top, side, back and bottom, compressors, condensers, heat radiation pipes, etc. Applicable in general.

The schematic sectional drawing of the refrigerator in the 1st Embodiment of this invention. The layout of the vacuum heat insulating material in the 1st Embodiment of the present invention. Sectional drawing of the vacuum heat insulating material in the 1st Embodiment of this invention. The schematic sectional drawing of the refrigerator in the 2nd Embodiment of this invention. 1 is a schematic sectional view of a conventional refrigerator. FIG. 2 is a schematic cross-sectional view of a conventional refrigerator. The principal part enlarged view of FIG.

Explanation of symbols

10, 104, 212 Box 11, 102, 213 Outer box 11a Top plate 11b, 103 Rear plate 12, 105, 214 Inner box 13, 106, 215 Heat insulating material 14 Refrigerated room 15a, 15b Freezer room 16 Vegetable room 17 Blower 18 Cooler 20 Compressor 21, 22 Heat insulation partition 23 Expanded polystyrene 30 Recess 31, 107 Electrical component 32, 225 Cover 35 Interior lamp 35 a Case 40 Vacuum heat insulation material 41 Core material 42 Enclosure material 43 Cover material 44 Adsorbent 50 Heat radiation pipe 50a Aluminum tape 52 Adhesive member 101 Refrigerator box 108 Closure plate 212a Ceiling wall 212b Back wall 212c Retreating part 220 Control board

Claims (7)

In a refrigerator in which a heat insulating material is arranged in a space formed by an outer box and an inner box,
A refrigerator having a recess for storing a self-heating component in a part of the outer box, and a vacuum heat insulating material disposed on a part of a projection surface of the recess toward the inner box.   A heat insulating material is arranged in a space formed by the outer box and the inner box, a heat radiating pipe arranged so as to be in contact with the inner surface of the outer surface of the outer box, and a control board on the rear side or the rear part of the outer surface of the outer box In a refrigerator provided with a recess for storing either or both of an electrical component such as a power supply board, a self-heating component such as a compressor, etc., a part of the projection surface of the heat radiating pipe and the recess toward the inner box side A refrigerator characterized in that a vacuum heat insulating material is disposed in the refrigerator.   The refrigerator according to any one of claims 1 and 2, wherein the recess is a molded product made of a synthetic resin material having nonflammability.   The refrigerator according to any one of claims 1 to 3, wherein the vacuum heat insulating material has a three-dimensional shape so as to straddle the concave portion and the steel plate portion of the outer box.   The refrigerator according to any one of claims 1 to 4, wherein the vacuum heat insulating material is made of at least a core material made of inorganic fibers and a gas barrier outer packaging material, and the core material has a thickness of 6 to 15 mm. . A heat insulating material is arranged in a space formed by the outer box and the inner box, and a heat radiation pipe and / or a condenser is arranged on the top surface of the outer box, and the top back side or the back part of the outer box In a refrigerator in which one or both of electric parts such as a control board and a power supply board and self-heating parts such as a compressor are arranged,
A refrigerator characterized in that a three-dimensional vacuum heat insulating material is disposed on one or both of the heat radiating pipe and the condenser and a part of the inner box side projection surface of the self-heating component.   The vacuum heat insulating material includes at least two layers of a synthetic resin film in which a core material compressed and sealed by covering at least a flexible inorganic fiber laminate with an inner bag made of a synthetic resin film and a heat-welded layer and a gas barrier film are formed. A laminated film having a gas barrier layer combined as described above is composed of an outer cover material in which the heat-welding layers are faced to each other and the end portions are welded, and the ear portion of the inner bag is disposed in the ear portion of the outer packaging material, The refrigerator according to any one of claims 1 to 6, wherein the inside of the outer jacket material is sealed by reducing the pressure after releasing the sealing of the inner bag.

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