KR101059453B1

KR101059453B1 - Refrigerator

Info

Publication number: KR101059453B1
Application number: KR20100011331A
Authority: KR
Inventors: 히데오 구마쿠라; 도시히코 나가모리; 고헤이 스스키노
Original assignee: 히타치 어플라이언스 가부시키가이샤
Priority date: 2009-09-28
Filing date: 2010-02-08
Publication date: 2011-08-25
Also published as: JP2011069559A; JP5193980B2; CN102032736A; KR20110034532A

Abstract

An object of the present invention is to obtain a refrigerator in which a vacuum insulator is provided without improving the external appearance of the heat insulation door of the refrigerator and the heat insulation performance is improved.
As a means for solving such a problem, the storage compartment provided in the refrigerator main body 101, the heat insulation door 1 which opens and closes the opening of this storage compartment, the outer plate 2 which forms the outer surface of the heat insulation door 1, and heat insulation An inner plate 4 forming an inner surface of the door 1, a door frame 3 provided at the edges of the outer plate 2 and the inner plate 4, the outer plate 1, the inner plate 4, and the door frame 3 In the refrigerator provided with the foam insulation (7) filled in the space formed by) and the vacuum insulation material (5) provided between the outer plate (2) and the inner plate (4), between the vacuum insulation material (5) and the outer plate (1) And a support member 6 for supporting the vacuum insulator 5 so as to fill the foam insulation 7 between the vacuum insulator 5 and the inner plate 4.

Description

Refrigerator {REFRIGERATOR}

The present invention relates to a refrigerator.

In recent refrigerators, in order to save energy and save space, a vacuum insulator having high insulation is provided.

As a structure which installs a vacuum insulator together with a rigid urethane foam (urethanefoam), and installs it in a heat insulation door, patent document 1 attaches the vacuum insulator which attached the peeling member to the adhesive surface side with a rigid urethane foam to an inner case, and an outer side The structure which filled and filled rigid urethane foam in the space formed by the case and the inner case is disclosed.

Patent Literature 2 discloses a configuration in which a spacer is disposed on an upper surface of a vacuum insulator, a foam insulator is injected, and the vacuum insulator does not directly contact an inner plate.

Japanese Patent Publication No. 2005-16776 Japanese Patent Application Laid-open No. Hei 8-100991

In the structure of patent document 1, the vacuum heat insulating material is affixed on the inner board side in order to avoid torsion and depression of the door surface side. Here, the inner plate is made of resin, is easier to deform than the outer plate, and has a shape with many irregularities. Therefore, it is difficult to fix a vacuum heat insulating material to an inner board, and when a foamed heat insulating material which is a rigid urethane foam is injected, a cavity (void) is easily formed between a vacuum heat insulating material and an inner board. Due to this cavity formation, there was a problem that depression occurred on the inner plate side.

In addition, in order to prevent deformation of the inner plate and warpage of the entire door body, when a reinforcing iron plate or the like is attached to the inner plate side, there is a problem that the manufacturing cost and the amount of work increase.

In addition, the problem that heat insulation efficiency is lowered by a so-called heat bridge phenomenon, in which heat (cold air) inside the refrigerator is transmitted through an inner plate, by an outer packaging material of a good thermal conductor of a vacuum insulator, is reduced. There was.

Next, in the structure of patent document 2, there existed a subject that a spacer reduced the fluidity | liquidity of a rigid urethane foam, and was unable to ensure sufficient adhesive area.

In addition, there has been a problem that the double-sided tape is peeled off until the foaming of the rigid urethane foam is completed, and the vacuum insulator deviates from the predetermined position.

In addition, when an operation panel is arrange | positioned adjacent to a door outer plate, an operation panel accommodating part is located between the divided outer plates or the outer plate edge part. When the outer plate is a steel plate and the operation panel housing part is plastic, there is a problem that it is easy to deform at the boundary between the outer plate and the operation panel housing part due to the difference in rigidity and the influence of the shrinkage force of the rigid urethane foam.

In view of the above problems, an object of the present invention is to obtain a refrigerator in which a vacuum insulator is provided without improving the appearance of the heat insulation door of the refrigerator and the heat insulation performance is improved.

MEANS TO SOLVE THE PROBLEM In order to solve the said conventional subject, this invention provides the storage compartment provided in the refrigerator main body, the heat insulation door which opens and closes the opening of the said storage compartment, the outer plate which forms the outer surface of the said heat insulation door, and the inner surface of the said heat insulation door, And an inner plate, a door frame provided at the edges of the outer plate and the inner plate, a foam insulation filled in the space formed by the outer plate, the inner plate and the door frame, and a vacuum insulator provided between the outer plate and the inner plate. The refrigerator has a support member for supporting the vacuum insulator so that the foam insulation is filled between the vacuum insulator and the outer plate and between the vacuum insulator and the inner plate.

In addition, a storage compartment provided in the refrigerator main body, an insulation door for opening and closing the opening of the storage compartment, an outer plate forming an outer surface of the insulation door, an inner plate forming an inner surface of the insulation door, and an edge portion of the outer plate and the inner plate. A refrigerator provided with a door frame installed in a space, foam insulation filled in a space formed by the outer plate, the inner plate and the door frame, and a vacuum insulator provided between the outer plate and the inner plate, the refrigerator being provided on the outer plate A support for supporting the vacuum insulator so that the vacuum insulator is provided over the rear surface of the recess, and the foam insulation is filled between the vacuum insulator and the outer plate and between the vacuum insulator and the inner plate. It is characterized by having a member.

In addition, the vacuum insulator is disposed to be inclined with respect to the outer plate, the foamed heat insulating material is injected from the upper surface side of the vacuum insulator, characterized in that the foam filled to reach the outer plate surface from the lower end of the vacuum insulator. .

In addition, the support member is characterized in that it is fixed to the door frame or the adjacent door frame.

ADVANTAGE OF THE INVENTION According to this invention, the refrigerator which provided the vacuum heat insulating material and improved the heat insulation performance, without reducing the external appearance of the heat insulation door of a refrigerator can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS The external appearance of the refrigerator in Embodiment 1 of this invention.
2 is a cross-sectional view of a heat insulating door of a refrigerator in Embodiment 1 of the present invention.
3 is a perspective view of the support member in the first embodiment;
4A is an enlarged view of the upper periphery of the support member attachment part in Embodiment 1. FIG.
4B is an enlarged view of the lower periphery of the support member attachment portion in Embodiment 1. FIG.
5A is a top enlarged perspective view of the support member attachment structure in Embodiment 1. FIG.
5B is an enlarged bottom perspective view of the support member attachment structure in Embodiment 1. FIG.
6 is a perspective view of a heat insulating door of a refrigerator in Embodiment 1;
FIG. 7 is a cross-sectional view of the foaming jig and the thermal insulation door, illustrating a step of injecting rigid urethane foam when foaming the thermal insulation door of the refrigerator according to the first embodiment; FIG.
Fig. 8A is a sectional view of the insulated door of the refrigerator in the second embodiment of the present invention.
Fig. 8B is a sectional view of the heat insulation door of the refrigerator in the second embodiment of the present invention.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described, referring drawings.

Example 1

1 is a front view of a refrigerator according to an embodiment of the present invention. 2 is a cross-sectional view of the heat insulation door of the refrigerator in Embodiment 1 of the present invention. 3 is a perspective view of a support member attached in a heat insulating door of a refrigerator in Embodiment 1. FIG. 4A and 4B are enlarged views of the supporting member attaching portion of FIG. 2. 5A and 5B are enlarged perspective views of the structure with the supporting member attached to the heat insulation door of the refrigerator in the first embodiment. It is a perspective view of the heat insulation door of the refrigerator in Embodiment 1, and is a figure before filling hard urethane foam which is a heat insulating material. FIG. 7 is a cross-sectional view of the foaming jig and the thermal insulation door, illustrating a step of injecting the rigid urethane foam when foaming the thermal insulation door of the refrigerator according to the first embodiment. FIG.

In FIG. 1, 101 is a refrigerator body. The refrigerator main body 101 has a refrigerating chamber 102, a lower freezing chamber 105, a vegetable chamber 106, and the like sequentially from the top. An upper freezing chamber 104 is provided between the refrigerating chamber 102 and the lower freezing chamber 105, and an ice making chamber 103 is provided next to the upper freezing chamber 104.

Moreover, the heat insulation door which opens and closes the said front opening is provided in the front opening of each storage chamber, respectively. That is, the left refrigerating compartment door 102a and the right refrigerating compartment door 102b are provided in the front opening of the refrigerating compartment 102, and the upper freezer compartment 104, the lower freezer compartment 105, the ice-making compartment 103, and the vegetable compartment 106 are provided. The upper freezer door 104a, the lower freezer door 105a, the ice maker door 103a, and the vegetable chamber door 106a are respectively provided in the front opening of the.

The left refrigerator compartment door 102a and the right refrigerator compartment door 102b are the upper hinge 103 (left hinge 103a, right hinge 103b respectively provided in the upper part of the refrigerator main body 101), respectively. ), Etc., the shaft is rotatably supported. That is, the French door is comprised by the left-right opening type.

In addition, the lower freezer compartment door 105a, the upper freezer compartment door 104a, the ice making chamber door 103a, and the vegetable compartment door 106a are each withdrawable doors and can be taken out together with the containers of the respective storage compartments.

Moreover, the operation part 14 is provided in the left refrigerator compartment door 102a. The operation unit 14 sets the storage room temperature and various functions of the refrigerator by the user operating.

Subsequently, in FIG. 2, 1 is a heat insulation door covering the front opening of the refrigerator, and an outer plate 2, a door frame 3 made of synthetic resin, an inner plate 4 made of synthetic resin, a vacuum insulator 5, and a support member 6. ), A foamed heat insulating material (7) made of rigid urethane foam, and a warpage preventing mechanism (8).

The outer plate 2 is a steel plate in which a polyethylene terephthalate film subjected to a handle, a shape, or a metallic treatment is applied to the surface. The inner plate 4 is formed by vacuum forming a sheet material made of ABS resin, and integrally forms a gasket fixing groove 4a for fixing a door gasket (not shown) to the outer circumference.

In addition, since the vacuum heat insulating material 5 is a rectangular plate shape which consists of a core material which consists of glass wool, and the outer cover material which has gas barrier property which accommodates this core material, it is high by making a inside into a vacuum state. It is to exhibit insulation performance.

Moreover, in order to have gas barrier property, an outer cover material is the metal vapor deposition plastic film produced by vapor-depositing metals, such as aluminum, and the favorable heat conductor comprised by putting together other plastic film materials in laminated shape. Therefore, when a heat insulation door body is comprised by the arrangement which contacted the outer board 2 or the inner board 4, the heat of external air and the heat (cold air) of the inside of a refrigerator are each outer board 2 or an inner board. Heat conduction is carried out to the metal vapor-deposited plastic film via (4), and heat insulation phenomenon is greatly reduced by heat bridge phenomenon.

Therefore, the vacuum insulator 5 needs to be accommodated without contacting the outer plate 2 or the inner plate 4, and the arrangement of the vacuum insulator 5 is approximately halfway between the outer plate 2 and the inner plate 4, It is made to bury using the support member 6 (support holder) which supports the vacuum heat insulating material 5 in the foam heat insulating material 7.

The support member 6 is made of plastic such as ABS, and as shown in FIG. 3, the vacuum insulator () is formed by the plate-shaped first pressing portion 6a integrally molded with the main body of the support member 6. 5) is fixed at the front and rear.

This 1st press part 6a forms the attachment part 6b with a main body in substantially U shape, and when it inserts the vacuum heat insulating material 5, the 1st press part 6a is shown with the arrow of FIG. As shown, it is difficult to break even when opened. On the other hand, the shape of the other end of the 1st press part 6a is also formed in substantially U-shape similarly, and is a claw for locking so that it may not be removed after inserting the vacuum heat insulating material 5 in the front-end | tip. The hanging piece 6c and the hanging part 6d on which the hanging piece 6c hangs are added. Moreover, one 2nd press part 6e which inserts the vacuum heat insulating material 5 in the back surface comprises the projection left and right surfaces of the support member 6, and needs to hold | maintain the vacuum heat insulating material 5. . Therefore, the cross section is formed into an H shape to secure the strength.

The 1st press part 6a and the 2nd press part 6e make the structure of the metal mold | die cut out, and when seen from the projection surface, the left and right of the 1st press part 6a becomes the space 6f. Thereby, the mold structure has the effect which can be simplified without using a slide core, and the foam heat insulating material 7 can be filled to a corner, without inhibiting the flow of a rigid urethane foam. Moreover, in order to make 6 g of blowout holes also play the same role, it is preferable to install suitably in a water location.

Next, the attachment method at the time of attaching the support member 6 to the heat insulation door 1 of a refrigerator is demonstrated. In this embodiment, the upper end 6h and the lower end 6i of the support member are fixed to the inner surface of the door frame 3. In FIG. 4, the rib 3a and the rib 3b are arrange | positioned at the foam heat insulating material 7 side which is each inner surface in the door frame 3 above and below the heat insulation door 1. In FIG. This is considering that the urethane foam inside the refrigerator shrinks due to the temperature difference between the outside of the refrigerator and the inside of the refrigerator, and the insulation door 1 bends in a curved shape. That is, it is for providing the U-shaped or L-shaped bending prevention mechanism 8 for preventing a clearance gap between a door gasket (not shown) and a case body, and preventing cold air from leaking. In this embodiment, the upper end 6h and the lower end 6i of the support member are fixed to the space inside the warp prevention mechanism 8.

In addition, even when the warpage prevention mechanism 8 is not required, it is fixed to the space between the rib 3a and the rib 3b on the inner surface of the door frame 3, but in this case, the upper end of the supporting member ( Since 6h) and the lower end 6i and the rib 3a and the rib 3b can be rattled, the thicknesses of the upper end 6h and the lower end 6i are corrected. In addition, what is necessary is just to adjust the position of the vacuum heat insulating material 5 in the front-back direction, ie, the distance of the outer board 2 and the inner board 4, when making the support member 6.

Next, positioning in the left-right direction is demonstrated using the enlarged perspective view of the structure with a support member of FIG. 5A and FIG. 5B. FIG. 5: A is the figure which looked at the heat insulation door 1 from the back surface side, and is a figure which shows the state before assembling the support member 6 to the upper door frame 3. As shown in FIG. FIG. 5: B is a figure which showed the state before assembling to the lower door frame 3 similarly.

In Fig. 5A, 3c is a dial. The door frame engaging portion 3c is provided at a suitable interval (for example, 100 to 150 mm) on the rib 3a on the inner surface of the door frame 3, and is provided between the rib 3a and the rib 3b. It forms a claw which locks the bending prevention mechanism 8 (not shown in FIG. 5A) fixed to the space of the space | interval. The height of the door frame engaging portion 3c is usually slightly larger (for example, 1.5 to 2 mm) than the plate thickness (about 1 mm) of the bending prevention mechanism 8, but in the present embodiment, the support member 6 In order to serve as a claw to fix the pressure, the height of the door frame engaging portion 3c is made as high as the plate thickness of the support member 6 (about 2 mm).

When it is not necessary to use a bending prevention mechanism, about 2 mm may be sufficient as the height of the door frame hanging part 3c from the beginning. The attachment position in the left and right directions of the support member 6 can be fixed by inserting and fixing the door frame engaging portion 3c provided in this way into the angular groove 6j provided in the portion where the support member 6 mates. I'm making it possible. If the height of the door frame hanging portion 3c cannot be made very high due to the structure of the mold, as shown in FIG. 5B, the door frame hanging portion 3c is located on the rear surface side of the lower end 6i of the supporting member 6. There is also a method of fixing the attachment position in the left-right direction by providing a convex portion 6k that forms a small projection having pressed) from both sides.

In the present embodiment, the door frame 3 is configured up and down. However, in the case of an insulated door constituting the door frame 3 made of plastic from side to side, the left and right door frames may be similarly used. Moreover, in the case of the heat insulation door which comprises a door frame up, down, left and right, you may fix the support member 6 to the inner side surface or the edge part of a neighboring door frame.

In addition, although the quantity of use of the support member 6 depends on the magnitude | size of the vacuum heat insulating material 5, the injection position of the foam heat insulating material 7, or the mass and rigidity of the vacuum heat insulating material 5, as shown in FIG. It is suitable.

Thus, although the vacuum heat insulating material 5 is embedded in the foam heat insulating material 7, the injection of the rigid urethane foam which is the foam heat insulating material 7 is demonstrated.

In Fig. 7, 9 is a foam jig of an insulated door, 9a is a jig main body, and 9b is a retractable cover jig. After installing the heat insulation door 1 to the jig main body 9a, the urethane foam stock solution is inject | poured by the header 10 which injects a rigid urethane foam, and the cover jig 9b in which the inner board 4 was installed is closed. It is. At this time, the magnitude | size of the vacuum heat insulating material 5 should be as large as possible with respect to the projection area of the heat insulation door 1 from the heat insulation performance. However, when the vacuum insulator 5 is enlarged, the space for injecting the stock solution of hard urethane foam on the outer plate 2 surface is eliminated. Therefore, in this embodiment, as shown in FIG. 7, the vacuum heat insulating material 5 is inclined with respect to the surface of the outer plate 2, and the stock solution of hard urethane foam is inject | poured into the upper surface of the vacuum heat insulating material 5. As shown in FIG. The raw liquid injected in this way was able to reach the outer plate 2 only from one of the lower sides (lower end side of the inclined side) of the inclination of the vacuum insulator 5. Thereby, the raw liquid of the rigid urethane foam which reached the outer plate 2 surface flows from left to right in the structure shown in FIG. 7, and foams after reaching the back surface of the door frame of the right side. In other words, since the vacuum insulator 5 is not horizontally installed, the stock solution of the rigid urethane foam injected onto the vacuum insulator 5 does not flow down from the left and right sides of the vacuum insulator 5 to the outer plate 2. Since the stock solution of the hard urethane foam does not collide from the left and right on the surface of the outer plate 2, generation of a cavity (void) caused by turbulence can be prevented.

As mentioned above, the heat insulation door 1 in this Embodiment 1 makes the arrangement | positioning of the vacuum heat insulating material 5 about halfway between the outer board 2 and the inner board 4, and is made of the foamed heat insulating material 7 made of hard urethane foam. ), The vacuum insulator 5 does not thermally directly contact the outer plate 2 or the inner plate 4. Thereby, the heat bridge phenomenon which arises from the heat conduction of the heat of the outside air or the inside heat (cold air) to the metal vapor deposition plastic film of the vacuum heat insulating material 5 through the outer plate 2 or the inner plate 4 can be avoided. It is possible to supply a heat insulation door having good heat insulation efficiency.

In addition, since the vacuum insulator 5 does not directly contact the outer plate 2 or the inner plate 4, a cavity (void) generated in the boundary portion between the vacuum insulator 5 and the outer plate 2 or the inner plate 4. Due to the difference in shrinkage of the foamed heat insulating material 7 made of rigid urethane foam, it is possible to supply an insulated door which is inexpensive and excellent in appearance without deformation or crushing occurring on the surface of the outer plate 2 or the inner plate 4. have.

In addition, the vacuum insulator 5 is configured to be supported and fixed in the foamed heat insulator 7 made of rigid urethane foam by the support member 6, so that the workability is good and can be reliably embedded in the insulator without any deviation in position. have.

In addition, the support member 6 which supports the vacuum heat insulating material 5 is comprised so that it may be fixed to the inner side or the edge part of the door frame 3 which opposes up and down, left and right, or the neighboring door frame 3. Thereby, the attachment groove of the door gasket (not shown) provided in the outer peripheral part of the door inner board 4 and the support member 6 do not interfere. That is, there is no worry that the unfilled part of a rigid urethane foam will not arise in the heat insulating material side of the groove | channel with a gasket of a door inner board, and a gasket with a hard urethane foam can fully adhere to it, and it is hard to separate a gasket, and structurally The refrigerator provided with the highly reliable insulation door which obtained sufficient strength can be obtained.

Moreover, the vacuum heat insulating material 5 is inclined with respect to the surface of the outer plate 2 using the support member 6, and the stock solution of hard urethane foam is inject | poured into the upper surface of the vacuum heat insulating material 5. The raw liquid injected in this way was able to reach the outer plate 2 only from either the lower side (lower end side of the inclined side) of the inclination of the vacuum insulator 5, and thus the raw liquid that reached the outer plate 2 surface. Silver flows from one end side of the heat insulation door 1 (from left to right in FIG. 7), and foams after reaching the rear surface of the door frame on the opposite side. For this reason, since the flow of the undiluted | stock solution of a hard urethane foam becomes one direction, and the undiluted solution of a hard urethane foam does not collide from right and left on the outer plate 2 surface, generation | occurrence | production of a cavity (void) can be prevented, The outer plate 2 can be supplied with an insulated door having excellent appearance without distortion.

[Example 2]

Next, Embodiment 2 is described. In addition, about the component same as Embodiment 1, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.

8A and 8B are sectional views of the heat insulation door of the refrigerator in the second embodiment of the present invention, wherein the recesses for storing the temperature operation panel substrate in the refrigerator on the heat insulation door surface as the operability improving means are adjacent to the steel plate on the door surface. It is the figure arrange | positioned at a place.

In Fig. 8A, 11 is a recess for accommodating the operation panel substrate. The recessed part 11 is shape | molded with ABS and other plastics, 12 is an operation panel board | substrate, 14 is an operation part which operates the temperature in a refrigerator, etc. In addition, since the position (especially height) of the operation part 14 which operates the temperature in a refrigerator etc. is related to the operability of a panel, it is necessary to arrange | position it at the height which is easy to use. For this reason, in the recent refrigerator, the uppermost compartment is often the refrigerator compartment, and in view of ease of use, it is approximately the center of the refrigerator compartment door or about one third the height of the refrigerator compartment door. In other words, the operation part 14 does not necessarily have to be located in the upper and lower ends or the left and right ends of the heat insulation door 1, and in FIG. 8A of this embodiment, the outer plate 2 in which the recessed part 11 was made up and down or left and right by the steel plate It is arrange | positioned in the height position which it is easy to use so as to fit in between.

In addition, in order to accommodate the operation panel board | substrate 12, the recessed part 11 is made into the depth about 20 mm-30 mm generally. In addition, the flange 11a in contact with the outer surface is molded into a structure in which the outer plate 2 made of steel sheet is fitted, and after the temporary plate 2 is temporarily fixed, the position of the vacuum insulator 5 is changed. It is installed using the support member 6 adjusted to be approximately an intermediate position between the outer plate 2 made of steel plate and the inner plate 4, and the foamed heat insulating material 7 made of hard urethane foam is injected to operate with the outer plate 2. The recessed part 11 for panel substrate storage is foam-fixed. At this time, the vacuum heat insulating material 5 may be a size which covers almost the whole surface of the back surface of the recessed part 11 for operation panel board | substrate storage, or a size close to the projection area of the heat insulation door 1.

In this way, if the heat insulation door 1 is comprised, the foam heat insulation material 7 made of hard urethane foam will be foam-fixed around the vacuum heat insulation material 5 which becomes a center, and the outer plate 2 and door frame 3 which comprise the periphery of it are made. Since the inner plate 4 is foamed and fixed by the foam heat insulating material 7, it can be set as the heat insulation door which is hard to be influenced by the contraction force of the hard urethane foam by the external heat | fever or cold air in a refrigerator.

In addition, in FIG. 8B, although the position of the operation panel accommodating recessed part 11 was an example located in the upper and lower ends or left and right ends of the heat insulation door 1, it is an example which is set as the position which is easy to use at the height of the whole refrigerator. In addition, in this embodiment, since the difference with FIG. 8A is the position of the recessed part 11, and the other form and structure are the same, detailed description is abbreviate | omitted.

As mentioned above, the heat insulation door 1 in this Embodiment 2 makes the arrangement | positioning of the vacuum heat insulating material 5 about the middle of the outer plate 2 made of steel plate, and the inner plate 4 made of resin, and a rigid urethane foam The vacuum heat insulating material 5 is embedded in the foamed heat insulating material 7 made of the above-mentioned, and the vacuum heat insulating material 5 is a structure embedded so as to cover almost the entire surface of the back surface of the recessed part 11 for accommodating the operation panel substrate 12. Therefore, the vacuum heat insulating material 5 is arrange | positioned also at the projection back surface of the boundary part (A) point and (B) point of the outer plate 2 made of steel plate, and the recessed part 11 for operation panel storage, and the foam heat insulating material 7 The outer plate 2 made of steel sheet, the recess 11 for operating panel storage, and the vacuum insulator 5 are bonded to each other in a sandwich form by hard urethane foam with a certain distance by the adhesive force of the sheet. For this reason, the rigidity of a heat insulation door body rises and heat insulation is influenced by the influence of the shrinkage force of a hard urethane foam by the difference of material rigidity of the outer panel 2 made of steel plate, and the operation panel accommodating recessed part 11 made of plastic. The door 1 is folded from the boundary between the outer plate 2 made of steel plate and the recess 11 for accommodating the operation panel and can be supplied with a rigid heat-insulating door without bending.

As described above, an embodiment of the present invention includes a storage compartment provided in a refrigerator main body, an insulation door for opening and closing an opening of the storage compartment, an outer plate forming an outer surface of the insulation door, and an inner plate forming an inner surface of the insulation door; And a door frame provided at an edge portion of the outer plate and the inner plate, a foam insulation filled in a space formed by the outer plate, the inner plate and the door frame, and a vacuum insulator provided between the outer plate and the inner plate. And a supporting member for supporting the vacuum insulator so that the foam insulation is filled between the vacuum insulator and the outer plate, and between the vacuum insulator and the inner plate.

By setting it as such a structure, since a vacuum heat insulating material is embedded in hard urethane foam by the exclusive support member, workability | operation is favorable and it can be fixed reliably without the deviation of an attachment position. In addition, since the vacuum insulator does not directly contact the outer plate or inner plate thermally, the heat of the outside air or the internal heat (cold air) arises from the heat conduction to the metal-deposited plastic film of the vacuum insulator through the outer plate or the inner plate, The so-called heat bridge phenomenon can be avoided, and a heat insulation door having good heat insulation efficiency and excellent workability can be supplied. In addition, since the vacuum insulator does not directly contact the outer plate or the inner plate, deformation or dents occurring on the outer plate or inner plate surface due to the difference in shrinkage of the cavity or rigid urethane foam generated at the boundary between the vacuum insulator and the outer plate or inner plate. It is possible to supply an insulated door having low cost and excellent appearance.

Subsequently, a storage compartment provided in the refrigerator main body, an insulation door for opening and closing the opening of the storage compartment, an outer plate forming an outer surface of the insulation door, an inner plate forming an inner surface of the insulation door, and an edge portion of the outer plate and the inner plate. A refrigerator provided with a door frame installed in a space, foam insulation filled in a space formed by the outer plate, the inner plate and the door frame, and a vacuum insulator provided between the outer plate and the inner plate, the refrigerator being provided on the outer plate A support for supporting the vacuum insulator so that the vacuum insulator is provided over the rear surface of the recess, and the foam insulation is filled between the vacuum insulator and the outer plate and between the vacuum insulator and the inner plate. It is characterized by having a member.

With such a configuration, the vacuum insulator is also disposed on the projection back surface of the outer plate made of steel plate and the operation panel, and the outer plate made of steel plate and the operation panel and the vacuum insulator made of hard urethane foam have a certain distance to be hard. The urethane foam is bonded in a sandwich shape. For this reason, the rigidity of the insulation door body rises, and the difference of the material rigidity of the outer panel made of steel plate and the operation panel made of plastic, and the influence of the shrinkage force of the rigid urethane foam, It is possible to provide a thermally insulated door having a strong rigidity that is not folded and deformed at the boundary portion. In addition, the heat bridge phenomenon can be avoided, and a heat-insulating door can be provided which is free from deformation and crushing occurring on the outer or inner plate surfaces.

Subsequently, the vacuum insulator is disposed to be inclined with respect to the outer plate, and the foamed heat insulator is injected from an upper surface side of the vacuum insulator, and filled and foamed to reach the outer plate surface from a lower end of the vacuum insulator.

With such a configuration, since the flow of rigid urethane foam can be controlled on the outer shell surface, there is no turbulence of the rigid urethane foam on the outer shell surface, and a cavity (void) caused by turbulence is hardly generated, and an outer shell having excellent appearance is produced. The eggplant can supply an insulated door.

Subsequently, the supporting member is fixed to the opposite door frame or the adjacent door frame.

By setting it as such a structure, since a support member can be embedded in a rigid urethane foam, the attachment groove of the door gasket provided in the outer peripheral part of a door inner board and a support member do not interfere. That is, there is no worry that an unfilled portion of the rigid urethane foam will not occur on the heat insulating material side of the gasketed groove of the door inner plate, and the groove with the gasket can be sufficiently adhered by the rigid urethane foam, so that the gasket is easily separated or the strength of the inner sheet There is no problem such as weakness, and it is possible to supply a highly reliable heat insulated door having a sufficient strength in structure.

1: insulated door 2: outer plate
3: door frame 3a, 3b: rib
3c: door frame latching portion 4: inner plate
4a: gasket fixing groove 5: vacuum insulation
6: supporting member 6a: first pressing part
6b: Attachment part 6c: Hanging piece
6d: dialer 6e: second pusher
6f: space 6g: ejection hole
6h: top 6i: bottom
6j: angled hole 6k: convex portion
7: foam insulation 8: bending prevention mechanism
9: foam jig 9a: jig body
9b: cover jig 10: header
11 recess 11a flange
12: operation panel substrate 14: operation unit

Claims

A storage compartment installed in the refrigerator body,
An insulating door for opening and closing the opening of the storage compartment;
An outer plate forming an outer surface of the insulated door;
An inner plate forming an inner surface of the insulated door;
A door frame provided at edge portions of the outer plate and the inner plate;
Foam insulation filled in the space formed by the outer plate, the inner plate and the door frame,
In the refrigerator provided with the vacuum insulation material provided between the said outer plate and the said inner plate,
And a support member for supporting the vacuum insulator so that the foam insulation is filled between the vacuum insulator and the outer plate and between the vacuum insulator and the inner plate.

A storage compartment installed in the refrigerator body,
An insulating door for opening and closing the opening of the storage compartment;
An outer plate forming an outer surface of the insulated door;
An inner plate forming an inner surface of the insulated door;
A door frame provided at edge portions of the outer plate and the inner plate;
Foam insulation filled in the space formed by the outer plate, the inner plate and the door frame,
In the refrigerator provided with the vacuum insulation material provided between the said outer plate and the said inner plate,
A recess provided in the outer plate and accommodating a substrate;
And a support member for supporting the vacuum insulator so that the vacuum insulator is installed over the rear surface of the recess, and the foam insulation is filled between the vacuum insulator and the outer plate and between the vacuum insulator and the inner plate. Refrigerator.

The method according to claim 1 or 2,
And the vacuum insulator is disposed to be inclined with respect to the outer plate, and the foam insulator is injected from an upper surface side of the vacuum insulator and filled and foamed to reach the outer plate surface from a lower end of the vacuum insulator.

The method according to claim 1 or 2,
And the support member is fixed to the opposite door frame or the adjacent door frame.