WO2002099347A1 - Corps de caisson isole, refrigerateur comprenant le corps de caisson et procede de recyclage des materiaux utilises pour le corps de caisson isole - Google Patents
Corps de caisson isole, refrigerateur comprenant le corps de caisson et procede de recyclage des materiaux utilises pour le corps de caisson isole Download PDFInfo
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- WO2002099347A1 WO2002099347A1 PCT/JP2002/005398 JP0205398W WO02099347A1 WO 2002099347 A1 WO2002099347 A1 WO 2002099347A1 JP 0205398 W JP0205398 W JP 0205398W WO 02099347 A1 WO02099347 A1 WO 02099347A1
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- WIPO (PCT)
- Prior art keywords
- box
- heat
- heat insulating
- urethane foam
- vacuum
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/06—Walls
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/06—Walls
- F25D23/062—Walls defining a cabinet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2201/00—Insulation
- F25D2201/10—Insulation with respect to heat
- F25D2201/12—Insulation with respect to heat using an insulating packing material
- F25D2201/126—Insulation with respect to heat using an insulating packing material of cellular type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2201/00—Insulation
- F25D2201/10—Insulation with respect to heat
- F25D2201/14—Insulation with respect to heat using subatmospheric pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
- F25D2400/04—Refrigerators with a horizontal mullion
Definitions
- the present invention relates to a heat insulating box, a refrigerator having the same, and a method of recycling materials for the heat insulating box.
- the present invention relates to a refrigerator using a heat insulating box made of rigid urethane foam and a vacuum heat insulating material, and a method of recycling a material for the heat insulating box.
- Japanese Patent Laid-Open Publication No. 57-57 discloses a technology in which a vacuum heat insulating material is disposed between an inner box and an outer box of a heat insulating box and is integrally foamed with hard urethane foam to form a box with high heat insulating performance. It is described in Japanese Patent Publication No. 9 6852.
- Japanese Patent No. 2858573 discloses a technique in which a polymer material is chemically decomposed by using water in a supercritical state or a subcritical state, and is decomposed into oil.
- rigid urethane foam can be obtained in a short time by using the technology disclosed in Japanese Patent Application Laid-Open No. Hei 10-310663. It is possible to recover available raw material derivatives.
- Another important issue in achieving recycling is to recycle the raw materials of the polyurethane resin obtained by chemical decomposition and the available raw material derivatives for use as refrigerator insulation. there were.
- An object of the present invention is to provide a heat-insulating box capable of securing strength and high thermal insulation performance even if a large amount of vacuum heat-insulating material is used to solve the above-mentioned problems. Furthermore, in order to improve the material recycling rate of used heat insulation boxes and contribute to recycling, a new method for producing recycled materials, and heat insulation boxes and refrigerators using recycled materials are provided. It is intended to be another purpose.
- the heat-insulating box of the present invention is formed from a rigid urethane foam having a flexural modulus of at least 8. OMPa and a density of at most 6 OK g / m3, and a vacuum heat insulating material.
- the rigid urethane foam has a flexural modulus of 8.0 MPa or more, sufficient strength is secured as a box, and there is no problem such as the box being unable to withstand the weight of the stored items and being deformed.
- the rigid urethane foam has a higher density to increase rigidity, but the density is 6 OK g / m3 or less, so there is no decrease in heat insulation performance due to an increase in solid heat conduction. Therefore, even if a large amount of vacuum insulation material is used, there is no problem in the quality of the insulation box, and energy saving is achieved by excellent insulation performance. It is possible to realize energy.
- Another heat-insulating box of the present invention is made of rigid urethane foam and a vacuum heat-insulating material, and the covering rate of the vacuum heat-insulating material used exceeds 40% with respect to the surface area of the outer box, and is 80% or less. It is assumed that.
- the energy-saving effect can be enhanced by the vacuum insulation material covering ratio exceeding 40% of the outer box surface area. By keeping the coverage at 80% or less, it is possible to prevent the use of vacuum insulation materials in a nonstandard form and the unreasonable installation work in areas with poor work efficiency while maintaining a sufficient heat insulation effect. .
- the recycling method of the present invention includes a crushing step of crushing the heat insulating box, a sorting processing step of sorting the crushed members, and a foaming heat insulating material processing step of powdering the separated rigid urethane foam mass.
- a rigid polyurethane foam made from tolylene diisocyanate yarn and raw material can be industrially recycled as a raw material for a rigid urethane foam.
- a crude material group obtained by supercritical water or subcritical water treatment is fractionated, and a tolylene diisocyanate composition synthesized from tolylene diamine, which is one of the fractionation components, and a tolylene diamine polyether polyol. It can be easily synthesized and recycled as a raw material for producing rigid urethane foam.
- FIG. 1 is a cross-sectional view of a heat insulating box according to Embodiments 1 and 3 of the present invention.
- FIG. 2 is a process chart according to Embodiment 2 of the present invention.
- FIG. 3 is a perspective view of a refrigerator showing a cutout according to Embodiment 4 of the present invention.
- FIG. 4 is a front sectional view of a refrigerator according to a fifth embodiment of the present invention.
- FIG. 5 is a side sectional view of a refrigerator according to a fifth embodiment of the present invention.
- FIG. 6 is a sectional view of a vacuum heat insulating material of a refrigerator according to a fifth embodiment of the present invention.
- FIG. 7 is a sectional view of a vacuum heat insulating material of a refrigerator according to a sixth embodiment of the present invention.
- FIG. 8 is a front sectional view of a refrigerator according to a seventh embodiment of the present invention.
- FIG. 9 is a side sectional view of a refrigerator according to Embodiment 7 of the present invention.
- the heat insulating box of the present invention comprises a rigid urethane foam having a bending elastic modulus of 8.0 MPa or more and a density of 60 kg / m 3 or less, and a vacuum heat insulating material.
- the coating rate of the vacuum insulation material exceeds 40% of the outer box surface area. Even if the covering rate of the vacuum insulation material exceeds 40% of the outer box surface area, the rigidity of the rigid urethane foam is more than 8.0MPa. There is no problem such as the box body not being able to withstand the distortion caused by the deformation.
- the power density which increases the density of the rigid urethane foam to increase rigidity, is set to 60 Kg Zm3 or less, so there is no decrease in heat insulation performance due to the increased effect of solid heat conduction. Therefore, even if a large amount of vacuum insulation material is used, there is no problem with the quality of the heat insulation box, and energy savings can be realized by excellent heat insulation performance.
- the coverage of the vacuum heat-insulating material exceeds 40% of the surface area of the outer case and has three or more doors.
- the rigidity of the rigid urethane foam is 8. OMPa or more.
- the box body being unbearable and deforming.
- the heat insulation performance is not degraded due to the effect of solid heat conduction because the density is set to 6 OKg ZmS or less. Therefore, even if a large amount of vacuum heat insulating material is used, the quality of the heat insulating box does not have any problem, and energy saving can be realized by excellent heat insulating performance.
- the rigid urethane foam is made of Since it is obtained by mixing and reacting an isocyanate component composed of a nitrate composition and a premix component composed of a polyol, a foam stabilizer, a catalyst, and a foaming agent, an aromatic ring is obtained by using tolylene diisocyanate.
- the reactive groups are close to each other, and a resin with a high elastic modulus can be obtained. Therefore, it is not necessary to increase the density extremely, and it is possible to maintain excellent heat insulation performance without being adversely affected by solid heat conduction. Therefore, even if the heat insulation box is configured so that the coverage of the vacuum heat insulation material exceeds 40% of the surface area of the outer box, the strength and the high heat insulation performance can be exhibited together.
- the insulation rate of the vacuum insulation material exceeds 40% of the outer box surface area and the insulation box body has three or more doors, it can exhibit both strength and high heat insulation performance. .
- the foaming agent of the rigid polyurethane foam is water, so that carbon dioxide gas is generated by the reaction with the isocyanate and used for foaming, and at the same time, strong reaction bonding due to its small molecular weight. Is formed in the resin molecular structure. Therefore, there is no need for an extreme density gap, and the heat insulation performance is not adversely affected by the density gap, and excellent heat insulation performance can be maintained. Therefore, even if the insulation box is configured so that the coverage of the vacuum insulation material exceeds 40% of the outer box surface area, the strength and the high insulation performance can be exhibited at the same time.
- the only gas released from the rigid urethane foam during disposal is carbon dioxide, which has the advantage that it can be safely handled even if it is broken.
- the insulation rate of the vacuum insulation material exceeds 40% of the outer box surface area and the insulation box body has three or more doors, the strength and the high insulation performance can be exhibited together. .
- the raw material production method of the present invention includes a crushing step of crushing the heat-insulating box, and a sorting process in which the waste pieces crushed by the crushing step are input and sorted into iron, non-ferrous metal, resin dust, and the like.
- Aminolysis reaction of powder Rigid polyurethane foam raw material is liquefied by cropping and dali-colysis reaction operation, and after removing the resin particles that become impurities and the metal fine particles by a filter, a chemical treatment operation by reaction with supercritical water or subcritical water is performed.
- a raw material group produced by a waste treatment method consisting of a compound and a raw material production process that decomposes into a plurality of amines is fractionated in the raw material production process, and one of the fractionation components, tolylenediamine, is converted to tolylenediocyanate. Since it is synthesized into a composition or a tolylenediamine-based polyether polyol, the rigid polyurethane foam starting from the tolylene diisocyanate composition used as a heat insulating material is once again used as a raw material for the rigid polyurethane foam. It can be recycled and industrialized.
- fractionation of am materials obtained by supercritical water or subcritical water treatment to obtain tolylene diisocyanate composition and tolylene diamine polyether polyol synthesized from tolylene diamine one of the fractionation components Therefore, it can be easily synthesized as a raw material for producing rigid urethane foam and recycled.
- still another heat insulating box of the present invention comprises a tolylene disocyanate composition or a tolylene diamine polyether polyol polyether polyol obtained by the above method as a main raw material, and a foam stabilizer and a catalyst as an auxiliary agent.
- a foaming agent is mixed and injected between the inner box and the outer box, and foamed and hardened to form a rigid urethane foam.Therefore, it is decomposed and synthesized from a rigid urethane foam made from a tolylene diisocyanate composition.
- the refrigerator of the present invention displays the type of the raw material of the rigid urethane foam, and can determine the type of the raw material of the rigid polyurethane foam used in the waste refrigerator.
- the resource can be easily recycled by making the selection.
- Another heat-insulating box of the present invention comprises a rigid urethane foam and a vacuum heat-insulating material having a vacuum insulating material covering ratio of more than 40% to 80% or less of the outer box surface area. If the covering material exceeds about 40% of the surface area of the outer box, the heat absorption load of the heat-insulating box can be effectively suppressed if the materials are arranged from the place where the heat gradient passing through inside and outside the box is large. Energy saving effect. More preferably, the coverage is 50%.
- the effect of using a large amount of vacuum heat insulating material does not saturate, and the heat absorption load can be effectively reduced in a state where the use value of the vacuum heat insulating material is high. It is possible to reduce energy consumption and increase the energy saving effect. For this reason, the use of non-standard forms of vacuum heat insulating material and the work of arranging it in areas where work efficiency is low are strongly emphasized, and the investment effect is not significantly reduced. It is possible to prevent imbalance between the increase in initial cost and the reduction in running cost due to energy saving.
- Another heat insulating box of the present invention is one in which vacuum heat insulating materials are arranged on both sides, a top surface, a back surface, and a bottom surface and a front surface. Since vacuum insulation is placed on all the surfaces, the use of vacuum insulation on the six projected surfaces in the insulation box effectively increases the coverage to more than 40% of the outer box surface area, %, The energy saving effect can be enhanced.
- the entire heat-insulating layer thickness is 2 Omm to 5 Omm except for the door formed of the rigid urethane foam and the vacuum heat-insulating material.
- the application of vacuum insulation materials is also used to increase the volumetric efficiency of the inner volume relative to the outer volume of the heat-insulating box. It can increase the value of vacuum insulation material.
- all of the heat-insulating layer thickness except for a door formed of hard urethane foam and vacuum heat-insulating material in a region where the temperature inside the heat-insulating box is maintained at a freezing temperature is provided.
- rigid urethane foam can be filled to a thickness within the range that can maintain fluidity, due to reduced urethane fluidity, heat insulation due to urethane foam roughness and poor filling Does not cause performance degradation. For this reason, the heat insulation effect as a multi-layer heat insulation layer with the vacuum heat insulating material in the freezing temperature range is not reduced, and the energy saving effect is effectively exhibited in the freezing temperature range where the temperature gradient inside and outside the heat insulating box is large. Can be.
- the application of vacuum heat insulating material can also be used to increase the internal volume of the insulating box in the freezing temperature region.
- the utility value of the vacuum heat insulating material can be further increased.
- the thickness of the heat insulating layer except for the door formed of the hard urethane foam and the vacuum heat insulating material in the region where the temperature inside the heat insulating box is maintained at the refrigeration temperature is 20 mm or more. 4 Omm, so that the hard urethane foam can be filled to a thickness that can maintain the fluidity, and ⁇ due to the decrease in the flowability of the urethane ⁇ ⁇ Insulation performance due to roughness and poor filling of the polyurethane foam Does not cause a drop.
- the thermal insulation effect as a multilayer insulation layer with the vacuum insulation material in the refrigeration temperature range is not reduced, and energy is saved by applying vacuum insulation material in the refrigeration temperature range where the temperature gradient inside and outside the heat insulation box is relatively small. It is possible to realize a heat-insulating box that balances the effect of improving the internal volume efficiency inside and outside the heat-insulating box.
- the thickness of the vacuum heat insulating material is 10 mm to 2 O mm, and the rigid urethane foam is filled even in a relatively thin portion having a wall thickness of 20 to 3 O mm. Since the thickness can be ensured within the range that can maintain fluidity, the area where the vacuum heat insulating material can be installed can be expanded without impairing the heat insulating properties of the multilayer heat insulating layer, and the coverage rate can be increased and the energy saving effect can be exhibited .
- Another heat insulation box of the present invention comprises a core material and a gas barrier film covering the core material. Since the core material is an inorganic fiber aggregate, and the inorganic fiber is used, the generation of gas over time in the vacuum heat insulating material is small, and the vacuum heat insulating material is manufactured. At this time, the process of first enclosing the powder in the inner bag so that the powder is used as the core material is omitted, which improves the production efficiency and the working environment. For this reason, even if the coverage is increased and a large amount of vacuum heat insulating material is used, a heat insulating box excellent in reliability over time and excellent in productivity can be provided.
- the heat conductivity of the vacuum heat insulating material when the heat conductivity of the rigid urethane foam is 0.015 WZmK is 0.010 W / m'K ⁇ . 0.03 OW / mK, where the ratio between the two is 1/15 to lZ5, and when the thickness of the multilayer insulation layer between the rigid urethane foam and the vacuum insulation material is small,
- the heat insulating performance as a multi-layer heat insulating layer can be maintained, and an insulation box to achieve a high coverage ratio.
- the energy saving effect can be achieved as expected in response to the demand for the installation of vacuum insulation materials even in places where the body is relatively thin.
- Another heat insulation box according to the present invention is characterized in that the vacuum heat insulation material is rigid between the outer case and the inner case.
- the entire outer surface of the vacuum insulation material is hard.
- the strength of the heat-insulated box is not reduced by peeling compared to the case where the outer or inner box of the heat-insulated box is in direct contact with the vacuum heat insulator.
- the projected area of heat passage between the outside and the inside of the insulation box can be more effectively covered on the inside, and the actual coverage rate is the same even when the used area is the same. Can be increased. .
- Another heat insulating box of the present invention is characterized in that a surface where a vacuum heat insulating material is buried in a hard polyurethane foam in the middle between an outer box and an inner box is at least a side surface of the heat insulating box, True Since the heat insulating material does not come into direct contact, the foaming agent of the hard polyurethane aggregates in the gap between the outer case and the vacuum heat insulating material, and the outer case cannot be deformed due to expansion and contraction due to changes in environmental temperature. . For this reason, it is possible to prevent the appearance of the side surface of the heat-insulating box body, which is conspicuous from the outside, from being deteriorated, and the quality and value from being lowered.
- Another refrigerator of the present invention comprises the heat insulating box of the present invention, a cooling chamber formed in the heat insulating box, and a cooling device for cooling the cooling chamber.
- FIG. 1 shows an insulated box according to one embodiment of the first embodiment.
- the heat-insulating box 1 has an inner box 2 made of a synthetic resin and an outer box 3 made of a metal, and a rigid urethane foam 5 and a vacuum heat insulating material 6 are arranged in a space 4 formed by these in a multilayer structure. ing.
- the vacuum heat insulating material 6 is bonded and fixed to the outer box 3 in advance, and the raw material of the rigid urethane foam 5 is injected to perform integral foaming.
- the coverage of the vacuum heat insulating material 6 with respect to the surface area of the outer box 2 was set at 50% 3 ⁇ 4 ⁇ 80%.
- Rigid urethane foam 5 is composed of 100 parts by weight of a polyester having a hydroxyl value of 380 111 ⁇ 011 / ⁇ , 3 parts by weight of a catalyst, 3 parts by weight of a foam stabilizer, 2 parts by weight of water as a foaming agent, and other components.
- a premix prepared by adding and mixing 0.5 part by weight of formic acid as a reaction modifier and an isocyanate comprising a tolylene succinate composition are mechanically mixed.
- the rigid polyurethane foam on the side surface of the heat-insulating box 1 shown in Example 1 had a density of 45 Kg m3, a flexural modulus of 8.5 MPa, and a thermal conductivity of 0.022 W / mK. It is. These physical properties are 1.3 times the density, 1.5 times the flexural modulus, and almost the same thermal conductivity as conventional rigid urethane foam.
- the density was increased to 55 Kg / m 3
- the flexural modulus was 10.OMPa
- the thermal conductivity was 0.023 W / m ⁇ K.
- both box strength and heat insulation performance are satisfied.
- FIG. 2 is a process chart showing a raw material manufacturing method according to the second embodiment.
- the transported heat insulation box 1 of the refrigerator passes through the crushing step 200 first, and then proceeds to the sorting processing step 300.
- This sorting process step 300 is performed by discarding the crushed pieces in the crushing step 200. Goods are separated into heavy and light wastes, and each is separated and collected for each specified material.
- the rigid urethane foam 5 and the foaming gas contained in the refrigerator are collected in the foam insulation material treatment step 400 in the light waste sorting process.
- the discharged rigid urethane foam 5 proceeds to a re-raw material production step 500, where it is decomposed and formed into a raw urethane foam starting compound, diamines.
- the waste of the heat insulation box 1 transported to the waste treatment facility is fed into the crushing step 200 in step 21.
- the waste material charged is transferred to the pre-shredder 1 by a conveyor (step 22).
- step 23 The waste crushed by the pre-shredder in the 3fi crushing of step 23 is fed into the crusher.
- the coarsely crushed waste in the previous process is further finely crushed by a single-shaft cascading machine with an output of about 1000 horsepower.
- step 25 light waste excluding heavy iron, non-ferrous metal, and rubber is separated by a vibrating conveyor placed below the car shredder take-out section, and in step 26, a solid conveyor is used. Transfer.
- the magnetic separator in step 27, the vibration conveyor in step 28, and the magnetic separation drum in step 29 separate the waste into those containing ferrous metals and those that do not.
- step 27 7 the light-weight dust risen in steps 26 and 27 is collected and transferred to the dust collection process (not shown) via a duct.
- step 29 The waste separated in step 29 is conveyed by a conveyor (step 30), and is manually separated on this conveyor into iron and other parts (step 31).
- the iron selected by the manual sorting in Step 31 is transferred to a truck for accumulation and transport by a conveyor (Step 32), and non-iron waste such as motor scraps and cables are separated by manual sorting.
- Step 9 The waste containing no ferrous metals separated in step 9 and the waste are transported by conveyor During the steps (Steps 52 and 54), non-ferrous metals are selected by hand sorting (Step 53), and the remaining waste including rubber and dust is separated and collected.
- the crushing step 200 of the present invention is performed in each of the steps from step 21 to step 24, and the screening step 300 is performed in step 25 from step 25. 2 and corresponds to each means and process from step 52 to step 54.
- the rigid urethane foam 5 separated in the crushing step 200 is sucked into the cyclone of the foam insulation material processing step 400 through a duct (step 33).
- a relatively large mass of rigid polyurethane foam 5 is separated and collected (step 35).
- the foaming agent gas in the rigid urethane foam collides with the cyclone park filter together with the small pieces of the rigid urethane foam (Step 36), and the foaming agent gas passes through and is collected by the recovery device (Step 3). 7). If the blowing agent gas is carbon dioxide, do not collect. In the case of cyclopentane, it is a recovery device for the explosion-proof system.
- the blocks and pieces of the rigid urethane foam 5 separated by the cyclone (step 35) and the bag filter (step 36) are sent to the foam volume reducer (step 41).
- the foam volume reduction machine (Step 41) is composed of a press or screw-type compression machine. It is forgiving. At the time of compression milling, the foaming agent gas dissolved in the rigid polyurethane foam can be vaporized by heating and efficiently recovered. ⁇ '
- the foaming new heat material treatment step 400 corresponds to each means step from step 33 to step 41, respectively.
- the rigid polyurethane foam 5 powdered in the foam insulation material treatment step 400 is sent to a reaction tank, and the glycolis reaction operation is performed by mixing and heating with ethylene glycol, monoethanolamine, or tolylenediamine.
- a liquefied substance is generated by the aminolysis reaction operation (step 42).
- impurity solid particles are removed by filtration through a filter (Step 43), introduced into the reactor together with high-temperature and high-pressure water, and maintained in a supercritical or subcritical state to cause a decomposition reaction (Step 44). .
- Step 45 From the effluent after the decomposition reaction, water, carbon dioxide and the like are removed in a dehydration tower (Step 45), and then raw materials of the rigid urethane foam 5 are obtained.
- the raw material production process 500 corresponds to each means and process from step 42 to step 45, respectively.
- the decomposition product is fractionated (step 46), and is synthesized from tolylenediamine, one of the components obtained by fractionation, into a tolylenediisocyanate composition or a tolylenediamine-based polyether polyol.
- Step 46 the decomposition product is fractionated (step 46), and is synthesized from tolylenediamine, one of the components obtained by fractionation, into a tolylenediisocyanate composition or a tolylenediamine-based polyether polyol.
- Rigid urethane foam was obtained by using the tolylenediamine obtained in Embodiment 2 as a starting material, and having a hydroxyl value of 38 Omg KOH / g, 100 parts by weight of tolylenediamine-based polyether polyol, and 3 parts by weight of a catalyst.
- FIG. 3 shows a refrigerator according to an example of the fourth embodiment.
- 1 2 is a refrigerator, hard
- -Arm 5 is configured as heat insulating material.
- 3 is the display stuck on the refrigerator It is a control plate and specifies the type of raw material for rigid polyurethane foam 5.
- the display management board 13 may be a recording medium such as a smart media or a par code. When the refrigerator is crushed, the recorded information is read and a processing method of the hard urethane foam can be selected.
- a heat insulating box and a refrigerator provided with the heat insulating box according to the fifth embodiment will be described with reference to FIGS.
- the refrigerator main body 101 shown in FIGS. 4 and 5 has an insulated box 102 including a door 103, an inner box 104 made of synthetic resin, and an outer box 100 made of metal such as an iron plate.
- Hard urethane foam 107 and vacuum heat insulating material 108 are arranged in a multi-layer structure in space 106 formed with force 5.
- the vacuum heat-insulating material 108 is bonded and fixed to the outer box 105 in advance, and the raw material of the rigid urethane foam 107 is poured into the heat-insulating box to perform integral foaming.
- Vacuum insulation material 108 is placed on both sides, top surface, back surface, and bottom surface of the heat-insulating box body 102, and covers 80% of the surface area of the outer box 105. It is occupied and arranged.
- the heat-insulating box 102 has a freezing room 109, a refrigerating room 110, and a vegetable room 111 as cooling rooms.
- the freezer compartment 109 is generally set in the freezing range between 115 ° C and 125 ° C, and the refrigerator compartment 110 and the vegetable compartment 111 is set in the cold range between 0 ° C and 1 ° C. Is done.
- the cooling system consists of a compressor 1 1 2, a condenser 1 1 3, a cooler 1 1 4, 1 1 5.
- the refrigerator main unit 101 includes a heat insulation box 102 including a freezer room 109, a refrigerator room 110, and a vegetable room 111, a compressor 112 for cooling these cooling rooms, and a condenser. It is composed of a cooling device including 1 13 and a cooler 1 14 and 1 15.
- the vacuum heat insulating material 108 is obtained by heating and drying an inorganic fiber aggregate 116 such as glass wool, inserting the same into the outer cover material 117, and evacuating the inside to seal the opening. It is formed by stopping.
- the fiber diameter is 0.1 ⁇ ! Inorganic in the range of ⁇ 1.0 ⁇ m
- the thermal conductivity is adjusted to 0.001 5WZm ⁇ K using fiber assembly 1 16.
- the thermal conductivity ratio is set to be 1/10.
- the outer cover material is made of polyethylene terephthalate (12 ⁇ thick) as a surface protective layer on one side, aluminum foil (6 ⁇ thick) in the middle, and high-density polyethylene in the heat seal layer. (50 ⁇ thick) laminated film, on the other side, a surface protection layer of polyethylene terephthalate (12jum thick), middle part of aluminum-vinyl alcohol copolymer resin composition (15 ⁇ thick) with aluminum deposited inside
- the laminated film layer and heat seal layer are made of high-density polyethylene (50 / im thick).
- a nickel resin layer is formed on the surface protective layer in order to improve the scratch resistance.
- the thickness of the insulation layer of the heat insulation box 102 is 25 to 5 Omm in the freezing area of the freezer compartment 09, including the thin portion of the opening except for the door 1.03.
- the distribution is 25 to 4.Omm, and the true heat insulating material 108 having a thickness of 15 mm is disposed in the heat insulating layer, and the rigid urethane foam 107 is filled. Care is taken to ensure a minimum thickness of 1 Omm.
- the above-mentioned use efficiency will be poor and the use value will be saturated.
- the effect of improving the heat insulation performance with respect to charging is significantly reduced. Therefore, as in the present embodiment, a large amount of the vacuum heat insulating material 108 is used by keeping the covering ratio of the vacuum heat insulating material 108 to the surface area of the outer box 105 at 80%. As a result, the effect of improving heat insulation does not saturate, and the heat absorption load can be effectively suppressed in a state of high use value, and the energy saving effect can be enhanced.
- a coverage rate of 80% is a large size vacuum insulation material that can cover both sides, top, back, bottom, and front of the heat-insulating box 102, that is, each surface of the door 103.
- the insulating box body 102 is used without being forced to use a non-standard form of the vacuum insulating material 108 and to arrange the work in a portion where the working efficiency is low, thereby significantly reducing the investment effect.
- the value as the life cycle cost can be increased without breaking the balance between the increase in the initial cost of the refrigerator body 1 and the reduction in the running cost due to energy saving.
- the coverage of the vacuum heat insulating material 10'8 with respect to the surface area of the outer box 105 is set to 80%, but the peripheral portion of each surface is about 50 mm and the partition between the cooling chambers. Because the thickness of the heat insulation layer is wrapped and does not form a projection surface to the inside of the storage, consideration should be given to avoiding these parts, and taking into consideration the filling adhesion of the rigid urethane foam 107 around the opening. Considering that the installation position of the vacuum heat insulator 108 should be kept slightly behind, there is a restriction such as a decrease in the workability of the attachment, but almost the same heat insulation effect can be maintained even at a coverage of about 75%.
- the outer dimensions of the heat-insulating box 102 are set to a height of 180 mm, a ⁇ of 675 mm, and a depth of 65 mm.
- the heat absorption load of the heat-insulating box is reduced when it is disposed from the inside and outside of the heat-insulating box 102 with a large heat gradient and the coverage exceeds about 40% of the surface area of the outer box 105. It can be effectively suppressed and the energy saving effect can be enhanced. More preferably, it is 50% or more.
- the temperature gradient inside and outside the refrigerator at the door 103 should be relatively smaller than the other parts of the heat-insulating box 102 involved in the exhaust heat of the compressor 112 and the condenser 113, and the door 103 Warehouse supported by Because of the strength required for the inner storage items and the mechanical peeling of the vacuum insulation material 108 by opening and closing the door, dare to lay out the vacuum insulation material 108 on the door 103. Thus, it is conceivable that the application effect of the vacuum heat insulating material 108 can be efficiently obtained in another main body portion of the heat insulating box 102. At this time, the coverage of the vacuum heat insulating material 108 is about 53%.
- the thickness of the heat-insulating layer of the heat-insulating box 102 formed of the rigid urethane foam 107 surrounding the freezer compartment 109 in the freezing area and the vacuum heat-insulating material 108 except for the door 103 is the opening thickness.
- the insulation layer thickness of the heat insulation box 102 excluding the door 103 has a distribution of 25 to 4 O mm including the thin part of the wall of the opening.
- the vacuum heat insulating material 108 having a thickness of 15 mm is provided therein, the thickness to be filled with the rigid urethane foam 107 is at least 1 O mm. Therefore, without impairing the flowability of the rigid urethane foam 107 during foaming, it does not cause deterioration in heat insulation due to foam roughness or poor filling.
- the thickness of the vacuum heat insulating material 108 is ensured and the heat insulating property of the rigid polyurethane foam 107 is maintained while the heat insulating property of the rigid polyurethane foam 107 is sufficiently exerted, so that the heat insulating performance of the multilayer heat insulating layer is effective.
- the inner volume of the freezing room 109 having a relatively small volume ratio can be reduced by applying the vacuum insulating material 108. It can also be used to increase the layout without affecting the layout, and the use value of the vacuum insulation material 108 can be further increased.
- the reason why the thickness of the heat insulating layer of the door 103 is not stipulated in these ranges is to secure the strength of the door 103 that supports the items stored in the warehouse, and to provide the recesses such as the handle, the operation unit for functions, and the display unit. This is because there may be cases where the existence of
- the thickness of the vacuum heat insulating material 108 is up to about 10 mm, the influence of the so-called heat bridge via the outer cover material 117 is relatively small, and the heat insulating performance of a single product can be generally maintained. Even if the wall thickness of the heat insulating layer is set to a minimum of 20 mm, the thickness of the rigid urethane foam 107 can be maintained at 1 O mm, and the intended heat insulating effect can be obtained.
- the thickness of the vacuum heat insulating material 108 is suitably from 10 mm to 20 mm.
- the vacuum heat insulating material 108 has a core material of an inorganic fiber aggregate 116 and a fiber diameter of 0.1 ⁇ ! Since the thermal conductivity of the vacuum insulation material 108 is set to 0.01 SWZm ', the thermal conductivity of the hard urethane foam 107 is set to 0.01 S A similar metric gives a thermal conductivity of 0.005 WZm ⁇ K and 1 Z10. Therefore, if the coverage is increased to nearly 80%, the heat insulation performance will be extremely high, and a great energy saving effect will be obtained. In addition, since the inorganic fiber aggregate 116 is used, gas generation over time in the vacuum heat insulating material 108 is small, and powder is used as a core material when the vacuum heat insulating material 108 is produced. In this way, the process of first enclosing the powder in the inner bag is omitted, which improves production efficiency and the working environment.
- the thermal conductivity of the vacuum heat insulating material 108 is harder. If the thermal conductivity of the system is 0.015 W / m ⁇ K, it is 0.0015 ⁇ 111 '1: and 1
- the range of the ratio of Z5 may be used.
- the vacuum heat insulating material 108 is required to secure a thickness that does not hinder the fluidity of the rigid urethane foam 107. Even if the thickness is reduced, the heat insulation performance as a multilayer heat insulation layer can be maintained, and the vacuum heat insulation material 108 is also provided at the relatively thin wall of the heat insulation box 102 in order to achieve high coverage. Energy savings can be achieved as expected in response to demands.
- the heat insulating box and the refrigerator provided with the heat insulating box according to the sixth embodiment will be described with reference to FIG.
- the description of the same configuration as that of the fifth embodiment will be omitted, and only different points will be described. '
- reference numeral 118 denotes a sheet-like inorganic fiber aggregate made of glass wool or the like. These sheet-like inorganic fiber aggregates 11'8 each having a thickness of 5 mm are overlapped and sealed in a gas-parallel outer covering material 119, and vacuum degassing is performed. Thus, the vacuum heat insulating material 120 is formed.
- a thin sheet-shaped core material Since a thin sheet-shaped core material is used, it can be easily used by adjusting it to a required thickness with two or more layers. Also, depending on the required shape, there are three layers, some places five layers, etc., and even within one vacuum insulation material, the number of layers can be different and a different form of vacuum insulation material can be formed. The heat insulating property of the multilayer heat insulating layer can be effectively improved while securing the thickness.
- a bent portion can be formed to form a three-dimensional vacuum heat insulating material 120 conforming to the shape of the heat insulating box, and the coverage of the surface area of the outer box 105 can be rationally increased.
- the foaming agent when foaming the rigid polyurethane foam 107 agglomerates in the gap between the heating material 120 and the outer box 105, causing the surface of the outer box 105 to deform due to expansion and contraction due to environmental temperature changes. Can be suppressed.
- An adhesive may be used between the layers in order to fix each layer. However, it is more preferable to simply use the sheets in a stacked manner in order to minimize gas generation or to reduce material cost and man-hour.
- the vacuum heat insulating material 122 is disposed on the intermediate layer having a wall thickness of the heat insulating box 122, and the entire periphery thereof is in close contact with the rigid urethane foam 107. Only the back surface of the door 103 and the heat insulating box 122 are adhered to the outer box 105 as in the fifth embodiment.
- the outer surface of the vacuum insulation material I 21 is in close contact with the hard polyurethane foam 107, so that the outer box 105 and the inner box 104 are not in direct contact with the vacuum insulation material. There is no decrease in the strength of the heat-insulated box 122 due to peeling.
- the projected area of heat transmission between the outside and the inside of the heat insulating box 122 can be more effectively covered on the inner side. Even if the area is the same, it is reasonable to increase the substantial coverage.
- the side surface of the outer box 105 does not directly contact the vacuum heat insulating material 121 on the side surface of the heat insulating box 122, hard urethane is placed in the gap between the outer box 105 and the vacuum heat insulating material 121.
- the foaming agent of form 107 aggregates and expands and contracts due to changes in environmental temperature. Does not deform. For this reason, the appearance of the side surface of the heat-insulating box body 122, which is conspicuous from the outside, can be impaired, and the quality and value of the refrigerator can be prevented from being reduced.
- the rear and bottom surfaces of the door 103 and the heat insulating box 122 are adhered to the outer box 105.
- the door 103 is formed of an intermediate layer.
- urethane does not easily flow to the surface layer.
- the middle layer arrangement is used for cooling system piping and cooler drains for defrost water of 114, 115. This is because it is difficult to design, and there are manufacturing reasons for assembling the back and bottom plates and the vacuum insulation material 121 as an integrated product. It goes without saying that such an arrangement of the vacuum heat insulating material 121 on the intermediate layer of the heat insulating layer may be formed over the entire area of the heat insulating box 122.
- the heat insulating box of the present invention is made of a rigid urethane foam and a vacuum heat insulating material. Even when the covering rate of the vacuum heat insulating material exceeds 50% of the outer box surface area, the bending elastic modulus of the rigid urethane foam is 8.0MPa. Because of the above, there is no problem with the strength of the box, and there is no problem that the box cannot be deformed because it cannot withstand the distortion due to the weight of the stored items. In addition, since the density is 60 KgZm3 or less, there is no decrease in heat insulation performance due to the effect of increased solid heat conduction. Therefore, even if a large amount of vacuum heat insulating material is used, there is no problem in the quality of the heat insulating box, and energy saving can be realized by the excellent heat insulating performance.
- the recycling method of the present invention makes it possible to industrially recycle hard urethane foam starting from the tolylene disocyanate composition used as a heat insulating material into a raw material for hard urethane foam.
- a crude material group obtained by supercritical water or subcritical water treatment is fractionated to obtain a tolylene disocyanate composition and a tolylene diamine polyether polyol synthesized from tolylene diamine, one of the fractionation components. It can be easily synthesized as a raw material for producing rigid urethane foam and recycled.
- the refrigerator of the present invention includes: a heat insulating box of the present invention; a cooling chamber formed in the heat insulating box; It consists of a cooling device that cools the cooling chamber.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Refrigerator Housings (AREA)
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2002258258A AU2002258258B2 (en) | 2001-06-04 | 2002-05-31 | Insulated box body, refrigerator having the box body, and method of recycling materials for insulated box body |
DE60233941T DE60233941D1 (de) | 2001-06-04 | 2002-05-31 | Isolierter kastenförmiger körper, kühlvorrichtung mit dem kastenförmigen körper und verfahren zum recycling von materialien für den isolierten kastenförmigen körper |
EP02728216A EP1400770B1 (en) | 2001-06-04 | 2002-05-31 | Insulated box body, refrigerator having the box body, and method of recycling materials for insulated box body |
US10/479,208 US7316125B2 (en) | 2001-06-04 | 2002-05-31 | Insulated box body, refrigerator having the box body, and method of recycling materials for insulated box body |
KR1020037015362A KR100574807B1 (ko) | 2001-06-04 | 2002-05-31 | 단열 상자체와 이것을 갖는 냉장고 및 단열 상자체용재료의 재활용 방법 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001167998A JP3478810B2 (ja) | 2001-01-15 | 2001-06-04 | 断熱箱体、原料製造方法、および冷蔵庫 |
JP2001-167998 | 2001-06-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002099347A1 true WO2002099347A1 (fr) | 2002-12-12 |
Family
ID=19010296
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2002/005398 WO2002099347A1 (fr) | 2001-06-04 | 2002-05-31 | Corps de caisson isole, refrigerateur comprenant le corps de caisson et procede de recyclage des materiaux utilises pour le corps de caisson isole |
Country Status (8)
Country | Link |
---|---|
US (1) | US7316125B2 (ja) |
EP (1) | EP1400770B1 (ja) |
KR (1) | KR100574807B1 (ja) |
CN (1) | CN1244791C (ja) |
AU (1) | AU2002258258B2 (ja) |
DE (1) | DE60233941D1 (ja) |
TW (1) | TW536612B (ja) |
WO (1) | WO2002099347A1 (ja) |
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2002
- 2002-05-31 EP EP02728216A patent/EP1400770B1/en not_active Expired - Lifetime
- 2002-05-31 CN CNB028112768A patent/CN1244791C/zh not_active Expired - Fee Related
- 2002-05-31 WO PCT/JP2002/005398 patent/WO2002099347A1/ja active IP Right Grant
- 2002-05-31 DE DE60233941T patent/DE60233941D1/de not_active Expired - Lifetime
- 2002-05-31 KR KR1020037015362A patent/KR100574807B1/ko active IP Right Grant
- 2002-05-31 AU AU2002258258A patent/AU2002258258B2/en not_active Ceased
- 2002-05-31 US US10/479,208 patent/US7316125B2/en not_active Expired - Lifetime
- 2002-06-03 TW TW091111869A patent/TW536612B/zh not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0868591A (ja) * | 1994-08-29 | 1996-03-12 | Toshiba Corp | 断熱箱体 |
JP2885673B2 (ja) * | 1995-11-29 | 1999-04-26 | 東北電力株式会社 | 化石燃料又は高分子物質の改質及び/又は低分子化方法 |
JPH10310663A (ja) * | 1997-05-09 | 1998-11-24 | Takeda Chem Ind Ltd | ポリウレタン樹脂の分解回収方法 |
JPH11159950A (ja) * | 1997-11-28 | 1999-06-15 | Toshiba Corp | 冷蔵庫の断熱箱体 |
JP2000065287A (ja) * | 1998-08-20 | 2000-03-03 | Tokuyama Corp | 断熱成形体 |
Non-Patent Citations (1)
Title |
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See also references of EP1400770A4 * |
Also Published As
Publication number | Publication date |
---|---|
DE60233941D1 (de) | 2009-11-19 |
AU2002258258B2 (en) | 2005-03-10 |
US7316125B2 (en) | 2008-01-08 |
KR100574807B1 (ko) | 2006-04-27 |
CN1513104A (zh) | 2004-07-14 |
US20040174106A1 (en) | 2004-09-09 |
EP1400770A1 (en) | 2004-03-24 |
TW536612B (en) | 2003-06-11 |
EP1400770A4 (en) | 2006-04-26 |
KR20040005984A (ko) | 2004-01-16 |
CN1244791C (zh) | 2006-03-08 |
EP1400770B1 (en) | 2009-10-07 |
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