JP2019109047A - refrigerator - Google Patents

Abstract

To provide a refrigerator that can improve heat insulation performance of an end part of a door for opening and closing a front face opening part of a heat insulation box body.SOLUTION: In the refrigerator, a vacuum heat insulation material 35 of the door 21 for opening and closing the front face opening part of the heat insulation box body constituted by holding a vacuum heat insulation material between an inner box and an outer box is extended beyond a tip part extended toward the door of a vacuum heat insulation material 95 provided in a left-side plate-like part 9 that is a side wall part constituting the heat insulation box body so as to cover the tip part.SELECTED DRAWING: Figure 3

Description

  Embodiments of the present invention relate to a refrigerator.

In order to improve the heat insulation performance and save energy of the refrigerator, the space between the outer case and the inner case constituting the heat insulation box to be the refrigerator main body is filled with a vacuum heat insulating material, and A vacuum heat insulating material is also filled between an inner plate and an outer plate which constitute a door for opening and closing the front opening.

  However, since the vacuum heat insulating material is not conventionally disposed at the end of the door corresponding to the front end near the door of the side wall constituting the heat insulation box, that is, at the end of this door There is a gasket, etc., and a vacuum heat insulating material can not be disposed, so the heat insulating property of this end is impaired, the heat insulating effect of the whole refrigerator is reduced, and the condensation is generated at the end of the door. There is.

  This invention is made in view of the above, The place made as 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 according to the embodiment has a refrigerator main body configured as a heat insulation box and a door for opening and closing a front opening of the heat insulation box, and is a refrigerator including a vacuum heat insulating material inside the door, An ear portion formed around the vacuum insulation of the door is folded back to the inside of the vacuum insulation, and a folded tip of the ear portion is a gasket provided at the end of the door to improve the sealing property of the door And the inner side of the center of the insertion part which attaches to a door.

It is a perspective view showing the whole structure of the refrigerator concerning one embodiment of the present invention. It is a cross-sectional view of the refrigerator shown in FIG. It is sectional drawing which shows in detail the internal structure of the corner | angular part of the part enclosed with the circle mark A of a dotted line in the cross-sectional view of the refrigerator shown in FIG. 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-like part in the said embodiment of this invention on the structure of a corner | angular part. It is a figure which overlaps and shows the temperature characteristic of the corner | angular part of the conventional 1st freezer compartment door and left side plate-like part on the structure of a corner | angular part.

  Hereinafter, modes for carrying out the present invention (hereinafter referred to as embodiments) will be described using 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 is composed of a heat insulating box 3 whose main body is formed by sandwiching a vacuum heat insulating material between an inner box and an outer box, and the heat insulating box 3 has an upper surface wall which becomes a ceiling. The upper surface plate-like portion 5 which constitutes, the bottom plate-like portion 7 which constitutes the bottom wall, the left side plate-like portion 9 which constitutes the left side wall, the right side plate-like portion 11 which constitutes the right side wall It consists of 13.

  In FIG. 1, the right side plate-like portion 11, the back plate-like portion 13 and the bottom plate-like portion 7 are hidden behind. In the case where the top plate 5, the bottom plate 7, the left plate 9, the right plate 11, and the back plate 13 are collectively referred to, they will be referred to simply as a plate. .

  In addition, on the front opening side of the heat insulation box 3 whose upper, lower, right, left, and back are surrounded by the plurality of plate-like parts, a double-opening refrigerator compartment door 15, a drawer-type vegetable room door 17, and a drawer-type ice room 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 side by side with the ice making cabinet door 19. In the heat insulation box 3 at the back of 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, there are provided a refrigerator compartment and vegetables. A chamber, an ice-making chamber, a first freezing chamber and a second freezing chamber are provided.

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

  FIG. 3 shows the front end portion of the left side plate-like portion 9 which is a portion surrounded by the dotted circle A in the cross sectional view of the refrigerator 1 shown in FIG. 2 and the left end portion of the second freezer compartment door 21 It is sectional drawing which shows the internal structure of the corner | angular part to contact in detail. As shown in FIG. 3, the first freezer compartment door 21 is configured by sandwiching the vacuum heat insulating material 35 between the door outer plate 31 and the door inner plate 33.

  Usually, in the vacuum heat insulating material, a surplus portion of a film such as a laminate film covering the core material is produced around the periphery for the reason of its production. The end of the vacuum heat insulating material 35 shown in FIG. 3 is substantially rectangular because it is folded and closely attached to the surface of the vacuum heat insulating material while forming the extra length part of the end, that is, the ear. Specifically, in the case of the vacuum heat insulating material 35, the ear portion is bent and formed from the end of the vacuum heat insulating material 35 to the side of the inner plate 33 of the door, and is formed in close contact with the surface portion. That is, in FIG. 3, 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 films overlap and reinforce the close contact surface portion. The folded portion is tightly sealed by the internal adhesive.

Further, the left side plate-like portion 9 constituting the side wall portion of the refrigerator 1 is similarly provided with the left side outer plate 91 and the left side inner plate 93.
And a vacuum heat insulating material 95 interposed therebetween.

  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 the same figure, inside the first freezer compartment. A throat portion 43 is provided as a projecting portion which is bent diagonally and greatly protrudes toward the end. The foam heat insulating material 37 is filled in the inside of the throat portion 43. The throat portion 43 functions as a cold air leakage prevention portion by blocking the cold air escape area, and further increases the refrigeration efficiency.

  A magnet 45 is attached to an end of the gasket 41 that abuts on the front end of the left side plate 9. The magnet 45 magnetically attaches the end of the first freezer compartment door 21 to the front end of the left side plate 9. It is supposed to Further, an air cushion portion 47 is provided inside the magnet 45 so as to buffer an impact on the left side plate-like portion 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 plug-in portion 51 is inserted. The gasket attachment 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, fins 53, 55 are attached between the gasket attachment 49 and the air cushion 47 on both sides of the gasket attachment 49, and the fins 53, 55 are attached to the first freezing chamber. The cold air is prevented from leaking, and the dew condensation inside the first freezer compartment door 21 due to the leaked cold air is suppressed.

  FIGS. 4 and 5 are diagrams showing the temperature characteristics of the corner of the first freezer compartment door 21 and the left side plate-like portion 9 according to the present invention and the prior art overlapped on the structure of the corner. 4 and 5, the symbol a is a temperature 22.6 ° C., the symbol b is a temperature 16.8 ° C., the symbol c is a temperature 11.0 ° C., and the symbol d is a temperature 5.2. ° C, symbol e is a temperature -0.6 ° C, symbol f is a point showing a temperature -6.4 ° C, and the same temperature zone indicated by a line connecting a plurality of points showing the same temperature as these Is shown as a graph.

  First, referring to FIG. 5, the conventional temperature characteristic will be described. In the conventional temperature characteristic shown in FIG. It does not extend to the left end of the freezer compartment door 21 and ends at the front throat. Therefore, in this conventional temperature distribution, a dew condensation temperature zone between the temperature 22.6 ° C. indicated by symbol a and the temperature 16.8 ° C. indicated by symbol b occurs at the corner portion without the conventional vacuum heat insulating material And there was a possibility that condensation would occur at this corner.

  On the other hand, in the embodiment of the present invention shown in FIG. 4, the vacuum heat insulating material 35 of the first freezer compartment door 21 extends to the left end of the first freezer compartment door 21 and is a left side plate which is a side wall part It extends so as to cover the tip of the vacuum heat insulating material 95 in the lower portion 9 which extends toward the door. 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. The dew condensation temperature zone of this corner is closed in the vacuum heat insulating material 35, that is, is confined in the vacuum heat insulating material 35, and the end of the first freezer compartment door 21 is generated. There is no possibility that condensation will occur on the part.

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

  In addition, specifically extending beyond the said 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-like part 9 which is a side wall part may specifically be 1st The left end portion of the vacuum heat insulating material 35 of the freezer compartment door 21 extends outside, for example, 3 mm or more from the center position of the gasket attachment portion 49 of the gasket 41, whereby the heat insulation performance of this portion can be improved. At the same time, condensation can be prevented from occurring on this part.

  Further, in the case where the foam heat insulating material (EPS or the like) is present inside the throat portion 43 which functions as a cold air leak prevention portion, it is not limited thereto, and the position is more than the extended position of the foam heat insulating material in the throat portion 43. The extension to the outside can also be expected to improve the heat insulation performance.

  Furthermore, as described above, the left end portion of the vacuum heat insulating material 35 of the first freezer compartment door 21 extends outside the center position of the gasket attachment 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 size in front view which is the size seen from the front of the heat insulating box 3 by extending it to the part. The heat insulation performance of the corner with the plate-like portion 9 can be improved, and consequently, the heat insulation performance of the refrigerator 1 can be improved, and condensation can be prevented.

  In the above embodiment, although the corner between the first freezer compartment door 21 and the left side plate portion 9 has been described, the present invention is not limited to this, and the other door and the left side plate portion 9 The same applies to the corner between the two and the corner between the other door and the right side plate-like portion 11.

  Moreover, in the said embodiment, the upper surface plate-like part 5 which comprises the outer case and inner case of a refrigerator, the bottom plate-like part 7, the left side plate-like part 9, and the right side plate-like part 11 are divided separately, respectively Connected at the corner that is the engaging part of the case 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 and configured as a single plate. Further, the inner box plate members constituting the inner box 20 of the heat insulating box 3 are not limited to those separately divided, but are integrally connected to form a box shape. It may be configured.

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

DESCRIPTION OF SYMBOLS 1 refrigerator 3 heat insulation box 5 top plate-like part 7 bottom plate-like part 9 left side plate-like part 11 right plate-like part 13 back plate-like part 15 cold storage room door 17 vegetable room door 19 ice room door 21 first freezer room door 23 second freezing room door 31 door outer plate 33 door inner plate 35 vacuum heat insulating material 37 of the first freezing room door foam insulating material 41 gasket 43 throat 45 magnet 47 air cushion 49 49 gasket attachment 51 insertion 53 , 55 fins 91 left outer plate 93 left inner plate 95 vacuum insulator of left plate-like portion

Claims (2)

A refrigerator comprising: a refrigerator main body configured as a heat insulation box; and a door for opening and closing a front opening of the heat insulation box, the inside of the door being provided with a vacuum heat insulating material,
An ear portion formed around the vacuum insulation of the door is folded back to the inside of the vacuum insulation, and a folded tip of the ear portion is a gasket provided at the end of the door to improve the sealing property of the door A refrigerator characterized in that it is inside the center of the insertion part which attaches to a door. In order to prevent cold air leakage from the door, there is provided a cold air leakage preventing portion projecting inside the storage, and the end of the vacuum heat insulating material of the door is extended outward from the cold air leakage preventing portion. Description refrigerator.