JP6081556B2 - refrigerator - Google Patents

Description

  Embodiments of the present invention relate to a refrigerator.

In order to improve the heat insulation performance and save energy, the refrigerator is filled with a vacuum heat insulating material in the space between the outer box and the inner box constituting the heat insulation box that is the main body of the refrigerator. A vacuum heat insulating material is also filled between the inner plate and the outer plate constituting the door that opens and closes the front opening.

However, since the vacuum heat insulating material is not conventionally provided at the end of the door corresponding to the front end near the door of the side wall portion constituting the heat insulation box, that is, at the end of the door Since there is a gasket etc. and vacuum heat insulating material can not be arranged, the heat insulation of this end is impaired, the heat insulation effect as a whole refrigerator is reduced, and condensation occurs at the end of the door There is.

This invention is made | formed in view of the above, The place made into the objective is providing the refrigerator which can improve the heat insulation performance of the edge part of the door which opens and closes the front opening part of a heat insulation box.

The refrigerator of the embodiment includes a refrigerator main body configured as a heat insulating box body with a vacuum heat insulating material between an inner box and an outer box, and a door that opens and closes a front opening of the heat insulating box body, The refrigerator is configured to include a vacuum heat insulating material between an inner plate and an outer plate, and gasket mounting portions are provided at both ends of the door behind the rear surface of the vacuum heat insulating material of the door, respectively. In the gasket mounting portion, gaskets are respectively provided to face the side walls constituting the heat insulation box, and both end portions on the side wall side constituting the heat insulation box of the vacuum heat insulating material of the door are provided on the side walls. and outwardly extending from the position of the inner plate surface, the vacuum heat insulating material of the door, extends so as to cover at least a portion of the distal end portion extending toward the door of the vacuum heat insulating material of the inner wall Yes .

It is a perspective view which shows the whole refrigerator structure concerning one Embodiment of this invention. It is a cross-sectional view of the refrigerator shown in FIG. FIG. 3 is a cross-sectional view showing in detail an internal structure of a corner portion surrounded by a dotted circle A in the cross-sectional view of the refrigerator shown in FIG. 2. It is a figure which overlaps and shows the temperature characteristic of the corner | angular part of the 1st freezer compartment door and left side plate-shaped part in the said embodiment of this invention on the structure of a corner | angular part. It is a figure which shows the temperature characteristic of the corner | angular part of the 1st freezer compartment door and the left side plate-shaped part in the past on the structure of a corner | angular part.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention (hereinafter referred to as embodiments) will be described with reference to the drawings.

FIG. 1 is a perspective view showing the overall structure of a refrigerator according to an embodiment of the present invention. The refrigerator 1 shown in the figure has a heat insulating box 3 whose main body has a vacuum heat insulating material sandwiched between an inner box and an outer box.
The heat insulating box 3 includes an upper surface plate-like portion 5 constituting an upper surface wall serving as a ceiling, a bottom plate-like portion 7 constituting a bottom wall, a left plate-like portion 9 constituting a left wall, and a right wall. Constituting right side plate 11
And a back plate portion 13 constituting the back wall.

In FIG. 1, the right side plate portion 11, the back plate portion 13, and the bottom plate portion 7 are hidden behind. Further, when the top plate-like portion 5, the bottom plate-like portion 7, the left-side plate-like portion 9, the right-side plate-like portion 11 and the back-side plate-like portion 13 are collectively described, they are simply referred to as plate-like portions. .

In addition, on the front opening side of the heat insulating box 3 surrounded by the plurality of plate-like portions in the up / down / left / right and back portions, a double-folding type refrigerator compartment door 15, a drawer-type vegetable compartment door 17, a drawer-type ice making compartment door 19,
A drawer-type first freezer compartment door 21 and a drawer-type second freezer compartment door 23 are attached. The second freezer compartment door 23 is provided next to the ice making compartment door 19. It should be noted that the refrigerator compartment door 15, the vegetable compartment door 17, the ice making compartment door 19, the first freezer compartment door 21, and the second freezer compartment door 23 have a refrigerator compartment and a vegetable inside the heat insulating box 3, respectively. A room, an ice making room, a first freezing room, and a second freezing room are provided.

FIG. 2 is a cross-sectional view of the refrigerator 1 shown in FIG. Specifically, for example, the refrigerator 1 in FIG.
It is the cross-sectional view which cut | disconnected the middle of the 1st freezer compartment door 21 horizontally. As shown in the figure, the heat insulating box 3 of the refrigerator 1 is configured in a U shape whose cross section is surrounded by a left plate portion 9, a right plate portion 11 and a back plate portion 13, and this U shape. A second freezer compartment door 21 is attached to the front opening on the front side of the heat insulating box 3 having a shape.

FIG. 3 is a cross-sectional view of the refrigerator 1 shown in FIG. 2, where the front end of the left plate-shaped portion 9 and the left end of the second freezer compartment door 21, which are portions surrounded by a dotted circle A, correspond to each other. It is sectional drawing which shows the internal structure of the corner | angular part which touches in detail. As shown in FIG. 3, the first freezer compartment door 21 includes a door outer plate 31 and a door inner plate 3.
3 with a vacuum heat insulating material 35 interposed therebetween.

Usually, in the vacuum heat insulating material, an extra length portion of a film such as a laminate film covering the core material is generated in the surroundings for manufacturing reasons. The end of the vacuum heat insulating material 35 shown in FIG.
This is because the extra length portion of the end portion, that is, the ear portion is bent and brought into close contact with the vacuum heat insulating material surface. Specifically, in the vacuum heat insulating material 35, the ear portion is bent from the end of the vacuum heat insulating material 35 toward the door inner plate 33 and is formed so as to be in close contact with the surface portion. That is, FIG.
Then, the ear portion is in close contact with the side surface of the gasket portion 41 of the vacuum heat insulating material 35 so that the film overlaps and reinforces the contact surface portion. Note that the folded portion is firmly sealed by an internal adhesive.

In addition, the left side plate-like portion 9 constituting the side wall portion of the refrigerator 1 is similarly left-side outer plate 91 and left-side inner plate 93.
Between which the vacuum heat insulating material 95 is sandwiched.

In addition, a gasket 41 is attached to the left end of the inside of the first freezer compartment door 21, and in front of the gasket 41, that is, on the right side of the gasket 41 in FIG. The throat part 4 as a protruding part that bends diagonally so as to face and protrudes greatly
3 is provided. The throat portion 43 is filled with a foam heat insulating material 37. The throat portion 43 functions as a cold air leakage prevention portion by closing the cold air escape area, and further increases the refrigeration efficiency.

The gasket 41 has a magnet 45 attached to an end that abuts the front end of the left plate-shaped portion 9, and the magnet 45 causes the end of the first freezer compartment door 21 to be magnetically attached to the front end of the left plate-shaped portion 9. It is supposed to be. In addition, an air cushion portion 47 is provided inside the magnet 45.
Is provided to buffer the impact on the left plate 9 when the first freezer compartment door 21 is closed.

A gasket mounting portion 49 is provided between the air cushion portion 47 and the door inner plate 33 of the first freezer compartment door 21, and an arrowhead extending from the air cushion portion 47 inside the gasket mounting portion 49. The insertion part 51 of a shape is inserted. The gasket mounting portion 49 may be formed integrally with the door inner plate 33, for example, as an extension of the door inner plate 33.

In addition, fin portions 53 and 55 are attached between the gasket attachment portion 49 and the air cushion portion 47 and on both sides of the gasket attachment portion 49, and the fin portions 53 and 55 are connected to the first freezer compartment. The leakage of cold air is prevented, and condensation inside the first freezer compartment door 21 due to the leaked cold air is suppressed.

FIG. 4 and FIG. 5 are diagrams showing the temperature characteristics of the corners of the first freezer compartment door 21 and the left side plate-like portion 9 described above in the present invention and the prior art on the corner structure. 4 and 5, the symbol a is a temperature of 22.6 ° C., the symbol b is a temperature of 16.8 ° C., the symbol c is a temperature of 11.0 ° C., and the symbol d is a temperature of 5.2. ° C, symbol e is temperature -0.6 ° C, symbol f is
The temperature is −6.4 ° C., and the same temperature range indicated by a line connecting a plurality of points indicating the same temperature is shown as a graph.

First, the conventional temperature characteristic will be described with reference to FIG. 5. In the conventional temperature characteristic shown in FIG. 5, the vacuum heat insulating material of the first freezer compartment door 21 is the first as shown by reference numeral 101. It does not extend to the left end of the freezer compartment door 21, but terminates at the throat portion in front. Therefore, in this conventional temperature distribution, the temperature 22.6 ° C. indicated by the symbol a and the temperature 1 indicated by the symbol b.
The condensation temperature range between 6.8 ° C. occurred at a corner without a conventional vacuum heat insulating material, and there was a possibility that condensation occurred at this corner.

On the other hand, in the embodiment of the present invention shown in FIG. 4, the vacuum heat insulating material 3 of the first freezer compartment door 21.
5 extends to the left end portion of the first freezer compartment door 21 so as to cover the front end portion extending toward the door of the vacuum heat insulating material 95 in the left side plate-like portion 9 which is a side wall portion. . Therefore, in the temperature distribution in the embodiment of the present invention, the dew condensation temperature zone between the temperature 22.6 ° C. indicated by the symbol a and the temperature 16.8 ° C. indicated by the symbol b is the first freezer compartment door 21. In the vacuum insulation 35
The condensation temperature zone at this corner is closed in the vacuum heat insulating material 35, that is, is confined in the vacuum heat insulating material 35, and there is no possibility that condensation occurs at the end of the first freezer compartment door 21. There is nothing.

In the refrigerator of the present embodiment configured as described above, the vacuum heat insulating material 35 constituting the first freezer compartment door 21 is sandwiched between the door outer plate 31 and the door inner plate 33, and the first Extending to the left end portion of the freezer compartment door 21, the tip end portion is covered so as to cover the tip end portion extending toward the door of the vacuum heat insulating material 95 in the left side plate-like portion 9 which is a side wall portion constituting the heat insulation box. Since it extends beyond it, the heat insulation performance in the left end part of the 1st freezer compartment door 21 improves, and a condensation temperature zone is confined in this part, and it can also prevent that condensation occurs.

In addition, extending beyond the front-end | tip part so that the front-end | tip part extended toward the door of the vacuum heat insulating material 95 in the left side plate-shaped part 9 which is a side wall part is specifically, 1st The left end portion of the vacuum heat insulating material 35 of the freezer compartment door 21 is extended to, for example, 3 mm or more outside the center position of the gasket mounting portion 49 of the gasket 41, whereby the heat insulating performance of this portion can be improved. At the same time, it is possible to prevent condensation from occurring in this portion.

Also, foam insulation (EPS, etc.) is provided inside the throat portion 43 that functions as a cold air leakage prevention portion.
In the case of the configuration in which the thermal insulation performance is present, the heat insulation performance can be expected to be improved not only by that, but also by extending outward from the position where the foam heat insulating material in the throat portion 43 extends.

Further, as described above, the left end of the vacuum heat insulating material 35 of the first freezer compartment door 21 is extended outward from the center position of the gasket mounting portion 49, and the left end of the first freezer compartment door 21. It is possible to increase the coverage of the vacuum heat insulating material with respect to the front view size, which is the size seen from the front of the heat insulating box 3, by extending to the part, and the first freezer compartment door 21 and the left side Plate-shaped part 9
The heat insulating performance of the corners of the refrigerator 1 can be improved. As a result, the heat insulating performance of the refrigerator 1 can be improved, and condensation can be prevented.

In addition, in the said embodiment, although the corner | angular part between the 1st freezer compartment door 21 and the left side plate-shaped part 9 was demonstrated, it is not limited to this, Other doors and the left side plate-shaped part 9 and The same applies to the corners between the other doors and the right side plate-like part 11.

Moreover, in the said embodiment, the upper surface plate-shaped part 5, the bottom surface plate-shaped part 7, the left-side plate-shaped part 9, and the right-side plate-shaped part 11 which comprise the outer box and inner box of a refrigerator are each divided | segmented separately, and these are each divided | segmented. Are connected at the corners which are the engaging parts of the refrigerator to constitute the heat insulation box of the refrigerator, that is, each of the outer box plate members constituting the outer box of the heat insulation box is divided separately. The present invention is not limited to this, and the outer box plate members may be integrally connected to form a single plate. Moreover, it is not limited to what each of the board member for inner boxes which comprises the inner box 20 of the heat insulation box 3 is divided | segmented separately, It is connected integrally and forms in a box shape. It may be configured.

Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 Refrigerator 3 Heat insulation box 5 Top surface plate-like part 7 Bottom surface plate-like part 9 Left side plate-like part 11 Right side plate-like part 13 Back surface plate-like part 15 Refrigeration room door 17 Vegetable room door 19 Ice making room door 21 First freezer compartment door 23 Second freezer compartment door 31 Door outer plate 33 Door inner plate 35 Vacuum insulation material 37 of first freezer compartment door Foam insulation material 41 Gasket 43 Throat portion 45 Magnet 47 Air cushion portion 49 Gasket attachment portion 51 Insertion portion 53 , 55 Fin 91 Left outer plate 93 Left inner plate 95 Vacuum insulation of left plate

Claims (5)

A refrigerator main body configured as a heat insulating box with a vacuum heat insulating material between the inner box and the outer box, and a door that opens and closes the front opening of the heat insulating box, the door including an inner plate and an outer plate A refrigerator configured with a vacuum heat insulating material between,
At both ends of the door, a gasket mounting portion is provided behind the rear surface of the vacuum heat insulating material of the door, respectively.
In the gasket mounting portion, a gasket is provided to face each of the side walls constituting the heat insulating box,
Both end portions of the side wall constituting the heat-insulating main body of the vacuum heat insulating material of the door, and extend outside the position of the inner plate surface of the side wall,
The refrigerator in which the vacuum heat insulating material of the door extends so as to cover at least a part of a front end portion extending toward the door of the vacuum heat insulating material in the side wall .   The side wall-side end portion of the heat insulation box of the door vacuum heat insulating material is a gasket mounting portion for attaching gaskets respectively provided on the left and right end portions of the door to the door in order to improve the sealing performance of the door. The refrigerator according to claim 1, which extends outward from the center.   An ear portion formed around the vacuum heat insulating material of the door is folded inside the vacuum heat insulating material, and a folded tip of the ear portion is located inside a center of an insertion portion for attaching the gasket to the door. Item 3. The refrigerator according to Item 2.   The refrigerator according to any one of claims 1 to 3, wherein the door is provided with a protrusion that extends into the refrigerator, and the protrusion retains heat insulation.   5. The device according to claim 1, further comprising: a cold air leakage prevention portion that protrudes toward the inside of the cabinet in order to prevent cold air leakage from the door, wherein a vacuum heat insulating material end portion of the door extends outward from the cold air leakage prevention portion. The refrigerator of Claim 1.

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