CN110494706B - Vacuum heat insulation box body and refrigerator using same - Google Patents
Vacuum heat insulation box body and refrigerator using same Download PDFInfo
- Publication number
- CN110494706B CN110494706B CN201880021971.0A CN201880021971A CN110494706B CN 110494706 B CN110494706 B CN 110494706B CN 201880021971 A CN201880021971 A CN 201880021971A CN 110494706 B CN110494706 B CN 110494706B
- Authority
- CN
- China
- Prior art keywords
- vacuum
- vacuum heat
- heat insulator
- insulated cabinet
- present
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/06—Arrangements using an air layer or vacuum
- F16L59/065—Arrangements using an air layer or vacuum using vacuum
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Refrigerator Housings (AREA)
- Thermal Insulation (AREA)
Abstract
The vacuum heat insulation box body comprises an outer plate, an inner plate and a vacuum heat insulator (3b) arranged in the outer plate and the inner plate. The vacuum heat insulator (3b) is provided with a core material (3bc) and a reinforcing member (3bca) therein. The vacuum heat insulator (3b) is vacuum-sealed inside by a sealing member (3ba) and a base member (3 bd).
Description
Technical Field
The present invention relates to a vacuum heat insulating box used in a refrigerator or the like, a refrigerator using the same, and a foam molding die for foam molding a core material used for the vacuum heat insulating box.
Background
In recent years, energy saving has been actively promoted as a countermeasure against global environmental problems, and the performance of heat insulation technology is expected to advance. As a conventional technique for such heat insulation, as shown in fig. 16 and 17, a structure has been proposed which includes a vacuum insulation panel 34 provided in a space inside a door frame 30 and a reinforcing member 35 provided in contact with a side surface of the door frame 30. With this structure, the heat insulating performance can be improved. The vacuum insulation panel is a structure in which the inside of a panel-shaped container is evacuated to improve the insulation performance (see, for example, patent document 1).
However, in the above-described conventional structure, the space inside the door frame 30 is composed of the vacuum insulation panel 34 and the reinforcing member 35 provided in contact with the side surface of the door frame 30, and the reinforcing member 35 is a separate component independent from the vacuum insulation panel 34. The heat insulating performance in the vicinity of the reinforcing member 35 is different from that of the vacuum heat insulating panel 34. Therefore, the conventional structure described above has a problem that the door frame 30 is warped due to deterioration of heat insulating performance and a temperature difference between the inside and the outside of the refrigerator.
In the conventional art, the space inside the door frame 30 has a structure including the vacuum insulation panel 34 and the reinforcing member 35 provided in contact with the side surface of the door frame 30, but air, water, and gas generated inside the vacuum insulation panel 34 or air, water, and gas entering from the outside are not considered. Therefore, the degree of vacuum in the vacuum insulation panel 34 cannot be maintained for a long period of time, and thus there is a problem that the insulation performance is also deteriorated.
In the conventional structure described above, the flat plate-shaped vacuum insulation panel 34 and the heat insulating member 37 are combined and arranged in the heat insulating space inside the door frame 30. In such a structure, the vacuum insulation panel 34 and the heat insulating member 37 are independent components, and therefore, there is a problem that the heat insulating performance is also deteriorated.
Documents of the prior art
Patent literature
Patent document 1: japanese patent laid-open publication No. 2013-119966
Disclosure of Invention
The present invention has been made in view of the above-described conventional problems, and provides a vacuum heat-insulating box (for example, a door body) capable of achieving both improvement in heat-insulating performance and improvement in rigidity such as warp deformation due to a difference in internal and external temperatures.
Specifically, an exemplary vacuum insulated box of the present invention includes an outer panel, an inner panel, and a vacuum insulator disposed between the outer panel and the inner panel. The vacuum heat insulator according to an embodiment of the present invention includes a core member and a reinforcing member inside, and the inside is vacuum-sealed by a sealing member and a base member.
According to such a configuration, the heat insulating performance can be improved, and even if a temperature difference occurs between the inside and outside surfaces of the vacuum heat insulating box, warping deformation of the vacuum heat insulating box can be suppressed for a long time by the vacuum heat insulating body having the core member and the reinforcing member inside.
In the vacuum insulation box according to an embodiment of the present invention, the core member and the reinforcing member are integrally formed. According to such a configuration, since the reinforcing member is integrally molded with the open-cell urethane foam of the core member to enhance the flexural rigidity, the warping deformation due to the thermal shrinkage caused by the difference in the ambient temperature between the inner and outer surfaces of the vacuum heat-insulating box can be further suppressed.
In the vacuum insulation box according to an example of the present invention, the reinforcing member is made of a material that is less susceptible to change due to thermal shrinkage than the core member. According to such a configuration, since the reinforcing member is made of a material that changes less due to thermal shrinkage than the open-cell urethane foam of the core member, it is possible to reliably suppress warp deformation due to thermal shrinkage caused by a difference in the ambient temperature between the inside and outside surfaces of the vacuum heat-insulating box.
In addition, an exemplary vacuum insulation box of the present invention includes an outer panel, an inner panel, and a vacuum insulation body disposed in an interior between the outer panel and the inner panel. The vacuum heat insulator has a core material therein. The vacuum heat insulator is configured to be vacuum-sealed inside by a sealing member and a base member. The inner panel is configured such that the wall thickness of the outer peripheral portion is larger than the wall thickness of the interior of the garage. According to such a configuration, the thickness of the inner panel can be set to suppress warp deformation due to thermal shrinkage caused by a difference in the ambient temperature between the inside and outside surfaces of the vacuum heat-insulating box.
In the vacuum insulation box according to an example of the present invention, the base member is formed by laminating thermoplastic resins of different materials. With such a configuration, the shape can be freely formed by vacuum forming or the like. Further, according to such a configuration, it is possible to prevent the infiltration of gas such as water and air from the outside after vacuum sealing, and to maintain the degree of vacuum, so that the heat insulating performance can be maintained for a long period of time.
In the vacuum heat insulating box according to an example of the present invention, the sealing member is laminated such that both surfaces of the aluminum foil are laminated with the resin films. According to such a structure, it is possible to prevent the infiltration of water, air, and other gases from the outside after vacuum sealing, and to maintain the degree of vacuum, so that the heat insulating performance can be maintained for a long period of time.
In the vacuum insulation box according to an example of the present invention, in an aspect having at least one of the above features, the vacuum insulation box includes an adsorbing member provided inside the vacuum insulation box. According to such a configuration, since the gas such as water and air generated from the inside after vacuum sealing and the gas such as water and air entering from the outside can be adsorbed to the adsorbing member, the degree of vacuum is not deteriorated, and therefore the heat insulating performance can be maintained for a long period of time.
Further, a refrigerator according to an exemplary embodiment of the present invention includes at least one vacuum heat insulating box having the above-described features. With such a configuration, it is possible to provide a refrigerator with high reliability that can maintain heat insulation performance for a long period of time and can suppress deformation of appearance.
Further, the present invention provides a vacuum heat insulating box capable of maintaining the improvement of productivity and heat insulating performance for a long period of time.
Specifically, an exemplary vacuum insulated box of the present invention includes an outer panel, an inner panel, and a vacuum insulator disposed inside the outer panel and the inner panel. The vacuum heat insulator has a core material and a suction member therein. The adsorption member is disposed on the high-temperature side of the vacuum heat insulator. The vacuum heat insulator is vacuum-sealed inside by a sealing member and a base member.
According to such a configuration, since the suction member of the core member disposed in the vacuum heat insulator is disposed on the outer plate side (high temperature side) of the core member, the vacuum heat insulator box (for example, a door body) can increase the suction speed in accordance with the suction speed of the suction member and the ambient temperature characteristic. With this configuration, the degree of vacuum in the vacuum heat insulator can be maintained for a long period of time in a state where the refrigerator is assembled and operated. Further, by providing the vacuum heat insulating box configured as described above, a refrigerator with high reliability can be provided.
In the vacuum insulation box according to an example of the present invention, the core member may be formed of open-cell urethane foam as a porous structure. The core material may have an adsorption member recess for disposing the adsorption member. With this configuration, the suction member can be easily arranged, and defective products in the assembly process can be prevented.
In the vacuum insulation box according to an example of the present invention, the adsorption member may be configured to adsorb water, air, and gas generated inside the vacuum insulation box and water, air, and gas entering from the outside. With this structure, the degree of vacuum in the vacuum heat insulator can be maintained for a long period of time, and the heat insulating performance can be maintained for a long period of time.
Further, a refrigerator according to an embodiment of the present invention includes at least one vacuum heat insulating box having the above-described characteristics of the vacuum heat insulator. With this structure, it is possible to provide a refrigerator with high productivity and high reliability in which heat insulating performance can be ensured over a long period of time.
The present invention also provides a foam molding die for manufacturing a vacuum insulation box, which is configured such that the entire space inside the vacuum insulation box is efficiently and integrally foam-molded from open-cell polyurethane foam.
Specifically, the foam molding die according to an example of the present invention is a foam molding die for open-cell foamed polyurethane, and the foam molding die includes a main body portion and a lid portion. The main body and the lid are configured to be openable and closable, and the mating surface of the main body and the lid of the foam molded product has a gas releasing structure.
With such a configuration, gas generated during foaming of the open-cell polyurethane foam can be easily released, and a foam-molded article of the open-cell polyurethane foam free from appearance shape defects can be secured. Thus, according to this structure, an excellent vacuum heat insulating box can be provided.
In the foam molding die according to an example of the present invention, the main body is formed of a split die. In this case, the mating face of the split mold may have a gas releasing structure. With such a configuration, the gas generated during the foaming of the open-cell polyurethane foam can be released more easily, and a foam molded article in which the open-cell polyurethane foam is formed without a defect in the appearance shape can be secured.
In the foam molding die according to an example of the present invention, the lid portion is formed by a split die. In this case, the mating face of the split mold may have a gas releasing structure. With such a configuration, the gas generated during the foaming of the open-cell polyurethane foam can be released more easily, and a foam molded article in which the open-cell polyurethane foam is formed without a defect in the appearance shape can be secured.
A foam molded article according to an example of the present invention is molded by a foam molding die having at least one of the above-described features. With such a configuration, a desired vacuum heat insulator having a foam molded product as a core material can be obtained.
Further, an exemplary vacuum insulation box of the present invention includes a foam molded product molded by a foam molding die having at least one of the above-described features. According to such a structure, a vacuum heat insulating box having a high heat insulating performance can be provided, which can obtain a vacuum heat insulating box having a complicated shape.
A refrigerator according to an embodiment of the present invention includes the vacuum heat insulating box. With this structure, a refrigerator having high heat insulation performance and energy saving can be provided.
Drawings
Fig. 1 is a perspective view of a refrigerator including a vacuum insulated box according to embodiment 1 of the present invention.
Fig. 2 is a perspective view of a refrigerating chamber door including a vacuum insulation box of embodiment 1 of the present invention.
Fig. 3 is a sectional view of a refrigerating chamber door including a vacuum insulation box of embodiment 1 of the present invention.
Fig. 4 is an enlarged sectional view of a portion a of fig. 3 of the refrigerating chamber door of embodiment 1 of the present invention.
Fig. 5 is a component development view of the refrigerating compartment door of embodiment 1 of the present invention.
Fig. 6 is an enlarged sectional view of part B of fig. 5 of the refrigerating chamber door of embodiment 1 of the present invention.
Fig. 7 is a sectional view of a vacuum insulator according to embodiment 1 of the present invention.
Fig. 8 is an enlarged sectional view of a portion C in fig. 7 of the vacuum insulator according to embodiment 1 of the present invention.
Fig. 9 is a developed view of components of the vacuum heat insulator according to embodiment 1 of the present invention.
Fig. 10 is an enlarged cross-sectional view of a portion D in fig. 9 of the vacuum insulator according to embodiment 1 of the present invention.
Fig. 11 is a perspective view of a core member and a reinforcing member of a vacuum insulation box according to embodiment 1 of the present invention.
Fig. 12 is a perspective view of a core member and a suction member of a vacuum insulation box according to embodiment 2 of the present invention.
Fig. 13 is a graph showing a relationship between an ambient temperature and a suction rate of a suction member disposed in a core member of a vacuum insulation box according to embodiment 2 of the present invention.
Fig. 14 is a view for explaining a foam molding type structure of a core member of a vacuum insulation box according to embodiment 3 of the present invention.
Fig. 15 is another view for explaining a foam molding type structure of a core material of a vacuum insulation box according to embodiment 3 of the present invention.
Fig. 16 is a part development view of a conventional vacuum insulation box.
Fig. 17 is a sectional view of a conventional vacuum insulated box.
Detailed Description
Embodiments of the present invention will be described below with reference to the drawings. In all the drawings, the same or corresponding portions are denoted by the same reference numerals, and redundant description is omitted. In all the drawings, components for explaining the present invention are removed and shown, and other components are not shown. The present invention is not limited to the following embodiments.
(embodiment mode 1)
Fig. 1 is a perspective view of a refrigerator having a vacuum insulated cabinet according to embodiment 1 of the present invention, fig. 2 is a perspective view of a refrigerating chamber door having a vacuum insulated cabinet according to embodiment 1 of the present invention, and fig. 3 is a sectional view of a refrigerating chamber door having a vacuum insulated cabinet according to embodiment 1 of the present invention. Fig. 4 is an enlarged sectional view of part a of fig. 3 of the refrigerating chamber door of embodiment 1 of the present invention, fig. 5 is an expanded view of components of the refrigerating chamber door of embodiment 1 of the present invention, and fig. 6 is an enlarged sectional view of part B of fig. 5 of the refrigerating chamber door of embodiment 1 of the present invention. Fig. 7 is a sectional view of a vacuum insulator according to embodiment 1 of the present invention, fig. 8 is an enlarged sectional view of a portion C of fig. 7 of the vacuum insulator according to embodiment 1 of the present invention, and fig. 9 is an expanded view of components of the vacuum insulator according to embodiment 1 of the present invention. Fig. 10 is an enlarged sectional view of a portion D of fig. 9 of a vacuum insulation panel according to embodiment 1 of the present invention, and fig. 11 is a perspective view of a core and a reinforcing member of a vacuum insulation box according to embodiment 1 of the present invention.
As shown in fig. 1, a refrigerator 1 according to embodiment 1 of the present invention includes: a refrigerator main body 2 forming an external appearance; a refrigerating chamber door 3; an ice making chamber door 4; a vegetable room door 5; and a freezing chamber door 6. As shown in fig. 2 and 3, the refrigerating chamber door 3 as a vacuum heat insulating box is composed of an outer plate 3a, an inner plate 3c, and a vacuum heat insulator 3 b.
Next, the structure of the refrigerating chamber door 3 as a vacuum heat insulation box will be described in further detail.
In fig. 3 to 5, the refrigerating chamber door 3 includes an outer plate 3a, an inner plate 3c, and a vacuum insulator 3b disposed in a space between the outer plate 3a and the inner plate 3 c. The refrigerating chamber door 3 has a gasket 3d at its peripheral edge for sealing the inside and outside of the refrigerating chamber 1.
As shown in fig. 6, the inner panel 3c of the refrigerating chamber door 3 is integrally formed by injection molding of an inner panel warehouse interior 15 and an inner panel outer peripheral portion 14 constituting a side portion of the refrigerating chamber door 3.
As shown in fig. 6, the inner panel 3c has a partial wall structure such that the thickness T2 of the outer peripheral portion on the outside of the refrigerator compartment is larger than the thickness T1 of the interior of the refrigerator compartment on the inside of the refrigerator compartment. Specifically, as shown in fig. 6, the inner panel 3c is configured such that the thickness T2 of the inner panel outer peripheral portion 14 on the outside of the refrigerator compartment is larger than the thickness T1 of the inner panel compartment interior 15 on the inside of the compartment, which is the inner panel 3c, with the recess 13 of the anchor portion 12 for fixing the gasket 3d as a boundary.
As shown in fig. 7 and 8, the vacuum heat insulator 3b of the refrigerating chamber door 3 as the vacuum heat insulating box is provided with a core member 3bc and a reinforcing member 3bca therein. The vacuum heat insulator 3b has a structure in which the inside thereof is vacuum-sealed by a sealing member 3ba and a base member 3 bd.
The core member 3bc and the reinforcing member 3bca are integrally formed. Specifically, the reinforcing member 3bca disposed in the vacuum heat insulator 3b is provided in advance in the foaming mold before foam molding of the open-cell polyurethane as the core member 3bc in the foaming mold, and is formed integrally with the open-cell polyurethane when foam molding of the open-cell polyurethane is performed.
As shown in fig. 7 and 9 to 11, a reinforcing member 3bca and an adsorbing member 3bb foamed and molded integrally with open cell urethane are disposed on a core member 3bc of a vacuum heat insulator 3 b. The core material 3bc is provided with a suction member recess 3bcb and a reinforcing member positioning pin mark in a part thereof. Specifically, the reinforcing members 3bca are arranged in a pair on the left and right sides of the inner side of the inner panel 3c (see fig. 5) in the longitudinal direction of the core 3 bc. The reinforcing member 3bca is formed in a curved surface shape extending from the planar portion on the inner side of the core 3bc along the convex portion 10 (see fig. 8 and 10). Further, a flange portion 11 is formed by bending at an end portion in the short side direction of the reinforcing member 3 bca. The flange portion 11 is extended from the end portion in the short side direction of the reinforcing member 3bca and is disposed inside the core 3bc so as to enter the core 3 bc.
As shown in fig. 9, a plurality of suction member recesses 3bcb for accommodating the suction members 3bb are formed in the core member 3bc in the vacuum heat insulator 3b on the outer panel 3a (see fig. 5) side. The suction member recesses 3bcb are provided for positioning and managing the number of suction members 3bb during the vacuum seal assembly work of the vacuum heat insulator 3 b.
In addition, in the core material 3bc, in order to make the positioning of the reinforcing member 3bca when the core material 3bc is foam-molded in the polyurethane foam mold easy to understand, as shown in fig. 10, the core material 3bc has a reinforcing member positioning pin mark 3 bcc.
The reinforcing member 3bca can be made of a material that is less susceptible to change due to thermal contraction than the core member 3bc, for example, a metallic sheet metal.
The base member 3bd (see fig. 8 and 9) is formed by laminating thermoplastic resins of different materials.
The sealing member 3ba is formed by laminating resin films on both sides of an aluminum foil.
The operation and action of the vacuum insulated box (refrigerating chamber door 3) configured as described above will be described below.
First, the "warping phenomenon" of the refrigerating chamber door 3 as a vacuum heat-insulated box will be described. The heat from the outside of the refrigerating compartment is cut off inside the refrigerating compartment of the refrigerator main body 2 by the heat insulating structure of the refrigerating compartment door 3 and the gasket 3d, and the temperature inside the refrigerating compartment is cooled to a predetermined temperature by temperature control of the refrigerating system.
Here, for the sake of simplicity, the "warping phenomenon" will be described below, taking a case where the temperature is high particularly in summer as an example. The refrigerating chamber door 3 is configured to thermally expand the outside of the refrigerating chamber door 3 when the outside air temperature of the environment outside the refrigerating chamber is 30-40 ℃. On the other hand, the room temperature inside the refrigerating compartment is controlled to be in the range of about 0 to 10 ℃, and heat shrinkage occurs inside the refrigerating compartment of the refrigerating compartment door 3. Thereby, a force of "warping" is generated in such a manner that the outside of the refrigerator is expanded to act on the refrigerating compartment door 3.
However, in the present embodiment, the inner plate 3c of the refrigerating chamber door 3 is configured such that the thickness T2 (see fig. 4) of the outer peripheral portion, which is the outside of the refrigerating chamber, is larger than the thickness T1 (see fig. 4) of the interior of the refrigerator, which is the inside of the refrigerating chamber. That is, the inner panel 3c is formed as an offset wall having portions with different thicknesses. Specifically, the inner panel 3c is configured such that the thickness T2 of the inner panel outer peripheral portion 14 on the outside of the refrigerator compartment is larger than the thickness T1 of the inner panel compartment interior 15 on the inside of the compartment, which is the inner panel 3c, with the recess 13 for fixing the anchor portion 12 of the gasket 3d as a boundary. With this configuration, heat shrinkage inside the inner panel 3c can be reduced, and heat shrinkage occurring inside and outside the refrigerating compartment can be alleviated, so that occurrence of warpage of the entire refrigerating compartment door 3 can be prevented.
In the present embodiment, the core 3bc and the reinforcing member 3bca are provided inside the vacuum insulator 3b of the refrigerating chamber door 3 as the vacuum insulation box. The vacuum heat insulator 3b has a structure in which the inside thereof is vacuum-sealed by the sealing member 3ba and the base member 3 bd. With such a structure, the vacuum heat insulator 3b has an improved flexural rigidity, and the inside thereof is vacuum-sealed, thereby increasing the rigidity. With this configuration, heat shrinkage due to a temperature difference between the inside and outside of the refrigerator can be reduced, and the occurrence of warpage in the entire refrigerator door 3 can be suppressed.
In addition, when the core material 3bc is formed, the reinforcing member 3bca is integrally molded with the open-cell polyurethane at the same time as the open-cell polyurethane is foamed, so that the core material 3bc and the reinforcing member 3bca are integrally formed. With such a configuration, the bending rigidity of the vacuum heat insulator 3b can be further improved, and the occurrence of warpage in the entire refrigerating compartment door 3 can be suppressed.
The reinforcing member 3bca can be made of a material that is less susceptible to change due to thermal contraction than the core member 3bc, for example, a metallic sheet metal. With such a configuration, the flexural rigidity of the vacuum heat insulator 3b can be more reliably increased, and the occurrence of warpage in the entire refrigerating compartment door 3 can be suppressed.
The base member 3bd constituting the vacuum heat insulator 3b is formed by laminating thermoplastic resins of different materials. The base member 3bd has gas barrier properties against water, air, and the like. According to such a configuration, the vacuum-sealed vacuum container can be formed into a free shape by vacuum forming or the like, and the vacuum-sealed vacuum container can prevent the infiltration of water or gas such as air from the outside, and can maintain the degree of vacuum. This also enables the heat insulating performance to be maintained for a long period of time.
Further, both surfaces of the extra thin aluminum foil constituting the sealing member 3ba of the vacuum heat insulator 3b are laminated by resin films. The sealing member 3ba has gas barrier properties against water, air, and the like. With this configuration, it is possible to prevent the infiltration of water and gas such as air from the outside after vacuum sealing, and to maintain the degree of vacuum. This also enables the heat insulating performance to be maintained for a long period of time.
Further, the vacuum heat insulator 3b accommodates the suction member 3bb therein. With such a configuration, water, air, and the like generated inside the vacuum insulation box, or water, air, and the like immersed from the outside can be adsorbed by the adsorbing member 3 bb. Thus, according to such a configuration, since the gas such as water and air generated from the inside of the vacuum heat insulation box after vacuum sealing and the gas such as water and air entering from the outside can be adsorbed to the adsorbing member 3bb, the degree of vacuum does not deteriorate, and therefore, the heat insulation performance can be maintained for a long period of time.
The suction member recess 3bcb of the core material 3bc provided in the vacuum heat insulator 3b is provided for positioning and quantity control in the vacuum seal assembly work of the vacuum heat insulator 3 b.
The reinforcing member positioning pin mark 3bcc is used to facilitate positioning when the reinforcing member 3bca is set in the urethane foam mold during foam molding of the core member 3 bc.
The suction member recess 3bcb of the core member 3bc provided in the vacuum heat insulator 3b and the reinforcing member positioning pin marks 3bcc for facilitating positioning when the reinforcing member 3bca is provided in the urethane foam mold can improve the work efficiency in assembling. Further, by the suction member recess 3bcb and the reinforcing member positioning pin mark 3bcc, it is possible to reliably perform manufacturing without defective products.
The adsorbing member 3bb adsorbs water, air, and the like generated inside the vacuum heat insulator 3b or water, air, and the like entering from the outside, and can maintain the degree of vacuum of the vacuum heat insulator 3b for a long period of time and also maintain the heat insulating performance for a long period of time.
In the present embodiment, the refrigerating chamber door 3 is used as an example of the vacuum heat insulation box, but the present invention is not limited thereto, and the present invention can be applied to the ice making chamber door 4, the vegetable chamber door 5, the freezing chamber door 6, and the like.
(embodiment mode 2)
Fig. 12 is a perspective view of a core member and a suction member of a vacuum heat insulator constituting a vacuum heat insulating box according to embodiment 2 of the present invention. Fig. 13 is a graph showing a relationship between an ambient temperature and an adsorption rate of an adsorption member disposed in a vacuum heat insulator of a vacuum heat insulating box according to embodiment 2 of the present invention. Note that the same components as those in embodiment 1 of the present invention are denoted by the same reference numerals, and detailed description thereof is omitted.
As shown in fig. 12, the suction member 3bb is disposed on the outer panel 3a side (high temperature side) (see fig. 5) in the vacuum insulator 3 b. Specifically, the suction member recesses 3bcb for accommodating the suction members 3bb are provided in a plurality of locations on the outer plate 3a side (high temperature side) of the core member 3bc in the vacuum heat insulator 3 b. The suction member recesses 3bcb are provided for positioning and managing the number of suction members 3bb during the vacuum seal assembly work of the vacuum heat insulator 3 b.
The core material 3bc is formed of an open-cell urethane foam as a porous structure. When the core member 3bc is formed, the suction member recess 3bcb for accommodating the suction member 3bb is formed simultaneously with the foaming of the open-cell urethane.
The adsorbing member 3bb adsorbs water, air, and the like generated inside the vacuum heat insulator 3b, or water, air, and the like entering from the outside.
As shown in fig. 13, the higher the temperature, the higher the adsorption speed of the adsorption member.
The operation and action of the refrigerating chamber door 3 as an example of the vacuum heat insulating box configured as described above will be described below.
The suction member 3bb of the core member 3bc disposed in the vacuum heat insulator 3b is disposed on the outer plate 3a side (high temperature side) of the core member 3 bc. With such a configuration, the adsorption rate can be increased according to the adsorption rate of the adsorption member 3bb and the ambient temperature characteristic. With this configuration, the vacuum degree in the vacuum heat insulator 3b can be maintained for a long period of time in the assembled refrigerator or the refrigerator operation state. This makes it possible to provide a refrigerator with high reliability.
The core material 3bc is formed of an open-cell urethane foam as a porous structure. When the core member 3bc is formed, the suction member recess 3bcb for accommodating the suction member 3bb is formed simultaneously with the foaming of the open-cell urethane. With this configuration, the suction member 3bb can be easily arranged, and defective products in the assembly process can be prevented.
The suction member 3bb is housed in the suction member recess 3 bcb. With such a configuration, no unevenness is generated between the core 3bc and the outer panel 3a, and the assembling property of the refrigerating chamber door 3 can be improved.
The adsorbing member 3bb adsorbs water, air, and the like generated inside the vacuum heat insulator 3b, or water, air, and the like entering from the outside. Thus, according to such a configuration, the degree of vacuum in the vacuum insulator 3b can be maintained for a long period of time, and the heat insulating performance can be maintained for a long period of time.
(embodiment mode 3)
Fig. 14 is a view for explaining a foam molding type structure of a core member of a vacuum insulation box according to embodiment 3 of the present invention. Fig. 15 is a view for explaining a foam molding type structure of a core material of a vacuum insulation box according to embodiment 3 of the present invention. Note that the same components as those in embodiment 1 and embodiment 2 of the present invention are denoted by the same reference numerals, and detailed description thereof is omitted.
The following describes the open cell foam molding die 7 for open cell foam polyurethane.
As shown in fig. 14, the open cell foam molding die 7 of the open cell foam polyurethane is composed of a foam molding upper die 7a and a foam molding lower die 7b, and has a vertically divided die structure.
As shown in fig. 15, the foam molding upper mold 7a and the foam molding lower mold 7b are each configured to be divided into a plurality of parts. Specifically, the part of the foam molding upper mold 7a where the suction member concave part 3bcb (see fig. 9 and 12) is formed is a dividing line between the foam molding upper mold 7a and the upper surface dividing mold 7 ab. The lower foam molding die 7b has a lower surface dividing die 7ba (4 surfaces) having side portions divided. The lower surface dividing mold 7b of the foam molding lower mold 7b is divided into diagonal (oblique side) dividing lines (of the foam molding lower mold 7 ba) at portions corresponding to the corners of the core material 3bc (see fig. 7 and 11).
According to the above configuration, gas generated during foam molding of the open-cell polyurethane is easily released. Further, the mold joint between the upper foam molding mold 7a and the lower foam molding mold 7b has a gas releasing effect. This makes it possible to form a foam molded article having no wall defect due to insufficient outgassing on the surface shape of the molded article.
The foam molding upper mold 7a has a structure divided into a plurality of parts. With such a configuration, since gas generated during foam molding of the open-cell polyurethane is easily released, a foam molded article having no wall defect due to a failure in releasing gas on the surface shape of the molded article can be molded.
The lower foam molding die 7b has a structure divided into a plurality of parts. With such a configuration, since gas generated during foam molding of the open-cell polyurethane is easily released, a foam molded article having no wall defect due to a failure in releasing gas on the surface shape of the molded article can be molded.
Further, the surface of the molded article after the molding of the open-cell polyurethane is easily released by the mold-dividing structure from the gas generated during the foam molding of the open-cell polyurethane. With this configuration, burrs can be generated at the divided portions where the gas mark is released. With this configuration, a foam molded article can be molded without causing wall defects due to insufficient outgassing on the surface shape of the molded article.
Industrial applicability of the invention
As described above, the present invention provides a vacuum heat insulation box capable of improving heat insulation performance and suppressing warp deformation of the vacuum heat insulation box for a long time even if a temperature difference occurs between the inside and outside of the vacuum heat insulation box. Thus, the present invention is not limited to refrigerators, and can be applied to heat insulation structures for automobiles, heat pump water heaters, electric rice cookers, bathtubs, and exterior walls and roofs of houses.
Description of the reference numerals
1 refrigerator
2 refrigerator body
3 refrigerating room door (vacuum heat insulation box)
3a outer plate
3b vacuum insulator
3ba seal member
3bb adsorption part
3bc core material
3bca reinforcing element
3bcb adsorption component concave part
3bcc reinforcement member locating pin mark
3bd base part
3c inner plate
3d gasket
4 Ice making room door
5 vegetable room door
6 freezing chamber door
7 continuous bubble foaming forming die
7a foaming forming upper die
7ab upper surface cuts apart mould
7b foaming forming lower die
7ba lower surface segmentation mould
10 convex part
11 flange part
12 anchoring part
13 recess
14 inner panel outer peripheral portion
And 15, the interior of the plate warehouse.
Claims (13)
1. A vacuum heat insulation box body is characterized in that:
comprising an outer plate, an inner plate, and a vacuum insulator disposed between the outer plate and the inner plate,
the vacuum heat insulator has a core material and a reinforcing member, the core material is a foam molded product of an open cell foam polyurethane, the reinforcing member is integrally molded with the open cell foam polyurethane,
the vacuum heat insulator has a structure in which the interior is vacuum-sealed by a sealing member and a base member.
2. The vacuum insulated cabinet of claim 1, wherein:
the reinforcing member is made of a material that changes less due to heat shrinkage than the core material.
3. The vacuum insulated cabinet of claim 2, wherein:
the reinforcing member is made of a material that changes less due to heat shrinkage than the core material.
4. A vacuum heat insulation box body is characterized in that:
comprises an outer plate, an inner plate, and a vacuum heat insulator disposed between the outer plate and the inner plate,
the vacuum heat insulator has a structure in which the interior is vacuum-sealed by a sealing member and a base member, the core member is a foam molded product of an open cell foam polyurethane, and a reinforcing member is integrally molded with the open cell foam polyurethane at the time of foam molding of the open cell foam polyurethane,
the outer peripheral portion of the inner panel has a wall thickness greater than the inner wall thickness.
5. The vacuum insulated cabinet of any one of claims 1 to 4, characterized in that:
the base member is formed by laminating thermoplastic resins of different materials.
6. The vacuum insulated cabinet of any one of claims 1 to 4, characterized in that:
the sealing member is formed by laminating resin films on both surfaces of an aluminum foil.
7. The vacuum insulated cabinet of claim 5, wherein:
the sealing member is formed by laminating resin films on both surfaces of an aluminum foil.
8. The vacuum insulated cabinet of any one of claims 1 to 4, characterized in that:
an adsorption member is provided inside the vacuum heat insulator.
9. The vacuum insulated cabinet of claim 5, wherein:
an adsorption member is provided inside the vacuum heat insulator.
10. The vacuum insulated cabinet of claim 6, characterized in that:
an adsorption member is provided inside the vacuum heat insulator.
11. The vacuum insulated cabinet of claim 7, wherein:
an adsorption member is provided inside the vacuum heat insulator.
12. The vacuum insulated cabinet of claim 8, wherein:
an adsorption member is provided inside the vacuum heat insulator.
13. A refrigerator, comprising:
the vacuum insulated cabinet of any one of claims 1 to 12.
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017066971A JP2018168949A (en) | 2017-03-30 | 2017-03-30 | Vacuum heat insulation housing and refrigerator |
| JP2017066972A JP6850967B2 (en) | 2017-03-30 | 2017-03-30 | Foam molding mold |
| JP2017-066972 | 2017-03-30 | ||
| JP2017-066970 | 2017-03-30 | ||
| JP2017066970A JP2018169097A (en) | 2017-03-30 | 2017-03-30 | Vacuum heat insulation housing and refrigerator |
| JP2017-066971 | 2017-03-30 | ||
| PCT/JP2018/012673 WO2018181440A1 (en) | 2017-03-30 | 2018-03-28 | Vacuum heat insulation case and refrigerator using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110494706A CN110494706A (en) | 2019-11-22 |
| CN110494706B true CN110494706B (en) | 2022-05-17 |
Family
ID=63676259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880021971.0A Active CN110494706B (en) | 2017-03-30 | 2018-03-28 | Vacuum heat insulation box body and refrigerator using same |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110494706B (en) |
| WO (1) | WO2018181440A1 (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB757520A (en) * | 1952-10-23 | 1956-09-19 | Gen Electric | Improvements in and relating to insulating structures |
| JP2002257465A (en) * | 2001-02-27 | 2002-09-11 | Toshiba Corp | Heat insulation door structure of refrigerator |
| JP2008185220A (en) * | 2008-04-24 | 2008-08-14 | Hitachi Appliances Inc | Vacuum heat insulation material |
| JP2013119966A (en) * | 2011-12-06 | 2013-06-17 | Toshiba Corp | Heat insulation box |
| JP2015096740A (en) * | 2013-11-15 | 2015-05-21 | パナソニックＩｐマネジメント株式会社 | Vacuum heat insulation housing |
| CN205102494U (en) * | 2015-01-16 | 2016-03-23 | 三菱电机株式会社 | Refrigerator |
| WO2016113423A1 (en) * | 2015-01-15 | 2016-07-21 | Kingspan Holdings (Irl) Limited | Vacuum insulating panel |
| CN205448472U (en) * | 2015-02-23 | 2016-08-10 | 三菱电机株式会社 | Insulated box , insulated door and refrigerator |
-
2018
- 2018-03-28 WO PCT/JP2018/012673 patent/WO2018181440A1/en active Application Filing
- 2018-03-28 CN CN201880021971.0A patent/CN110494706B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB757520A (en) * | 1952-10-23 | 1956-09-19 | Gen Electric | Improvements in and relating to insulating structures |
| JP2002257465A (en) * | 2001-02-27 | 2002-09-11 | Toshiba Corp | Heat insulation door structure of refrigerator |
| JP2008185220A (en) * | 2008-04-24 | 2008-08-14 | Hitachi Appliances Inc | Vacuum heat insulation material |
| JP2013119966A (en) * | 2011-12-06 | 2013-06-17 | Toshiba Corp | Heat insulation box |
| JP2015096740A (en) * | 2013-11-15 | 2015-05-21 | パナソニックＩｐマネジメント株式会社 | Vacuum heat insulation housing |
| WO2016113423A1 (en) * | 2015-01-15 | 2016-07-21 | Kingspan Holdings (Irl) Limited | Vacuum insulating panel |
| CN205102494U (en) * | 2015-01-16 | 2016-03-23 | 三菱电机株式会社 | Refrigerator |
| CN205448472U (en) * | 2015-02-23 | 2016-08-10 | 三菱电机株式会社 | Insulated box , insulated door and refrigerator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110494706A (en) | 2019-11-22 |
| WO2018181440A1 (en) | 2018-10-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101597554B1 (en) | Vacuum insulation panel and refrigerator with vacuum insulation panel | |
| US8881398B2 (en) | Method and apparatus for insulating a refrigeration appliance | |
| EP2622292B1 (en) | Vacuum insulation panel and a refrigerator with a vacuum insulation panel | |
| US7815269B2 (en) | Refrigerator | |
| KR100980175B1 (en) | Refrigerator | |
| KR101620397B1 (en) | Vacuum insulation panel and refrigerator with vacuum insulation panel | |
| JP2006242439A (en) | Refrigerator and its manufacturing method | |
| JPH11159693A (en) | Vacuum heat insulating panel and manufacture therefor and heat insulating box body using it | |
| KR100617666B1 (en) | Refrigerator | |
| JP2011102679A (en) | Refrigerator | |
| KR20120046621A (en) | Refrigerator with vacuum insulation panel | |
| JP2009024922A (en) | Refrigerator | |
| US20180328648A1 (en) | Heat insulating material and insulating case for refrigerator | |
| KR100691917B1 (en) | Refrigerator | |
| CN110494706B (en) | Vacuum heat insulation box body and refrigerator using same | |
| EP3372928A1 (en) | Refrigerator | |
| JP7182040B2 (en) | Vacuum Insulated Enclosures and Refrigerators | |
| JP6850967B2 (en) | Foam molding mold | |
| JPH11159950A (en) | Heat insulating box body for refrigerator | |
| JP2018169097A (en) | Vacuum heat insulation housing and refrigerator | |
| JP2018168949A (en) | Vacuum heat insulation housing and refrigerator | |
| JP6340549B2 (en) | refrigerator | |
| JP6970933B2 (en) | Vacuum insulated housing | |
| JP2013178071A (en) | Heat insulating box, refrigerator and method for manufacturing heat insulating box | |
| WO2018008446A1 (en) | Heat insulation box manufacturing method and heat insulationn box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |