JP6314314B2 - refrigerator - Google Patents

Description

  The present invention relates to a heat insulating partition wall that partitions a heat insulating box of a refrigerator into a plurality of storage rooms.

  A conventional refrigerator includes an inner box, an outer box, a heat insulating box, and a partition wall that partitions the heat insulating box into a plurality of storage rooms, and the partition wall is attached to the inner box, and includes an inner box and an outer box. A technique is disclosed in which when a foamed heat insulating material is filled into the heat insulating box, the foamed heat insulating material is also integrally filled into the partition wall from the opening on the side surface of the partition wall. (For example, see Patent Document 1)

JP-A-11-101573

  However, in the conventional refrigerator, when the partition wall and the heat insulation box are integrally foamed, in order to fill the entire partition wall with the foam insulation through the opening on the side surface of the partition wall having a small thickness and a large area. In addition, it is necessary to inject the foam heat insulating material at a density higher than the reference density when only the heat insulating box is filled, and there is a problem that the foam heat insulating material easily leaks from the joint surface during filling and foaming.

  Also, when integrally foaming the partition wall and the heat insulation box, it is necessary to hold with a foaming jig so that the inner box, outer box and partition wall are not deformed by foaming pressure, but if the partition wall is uneven, There is a problem that the foaming jig itself has a complicated configuration to be deformed without being reliably pressed by the foaming jig, or to be reliably pressed, leading to an increase in cost.

  This invention solves the said conventional subject, and provides the refrigerator which can form the heat insulation box body provided with the heat insulation partition wall which divides a heat insulation box body into several storage chambers at low cost with high quality. For the purpose.

In order to solve the above-described conventional problems, the refrigerator of the present invention includes a heat insulating box having an outer box, an inner box, and a foam heat insulating material, a partition wall that partitions the heat insulating box into a plurality of storage rooms, A refrigerator provided with a door provided at the front opening of the storage room, wherein the partition wall is a single unit filled with foam heat insulating material inside the inner box, and between the outer box and the inner box intended to fill the foam insulation, the partition wall is formed by joining the upper and lower plates, the bonding surface when the upper and lower plates covering the upper and lower jigs when to fill the foam insulation is the vertical plate The upper and lower flanges are provided so as to be flush with the joint surface with the upper and lower flanges, and only one of the joint surfaces of the upper and lower plates is provided with an opening for filling the foam heat insulating material.

  This makes it possible to form an opening for filling foam insulation with one of the joint surfaces of the plate with a simple mold, and to provide heat insulation with a heat insulation partition wall that partitions the heat insulation box into a plurality of storage chambers. A box can be formed with high quality at low cost.

  Since the refrigerator of the present invention can form an opening for filling the foamed heat insulating material on one of the joint surfaces of the plate with a simple mold, a high-quality refrigerator can be provided at low cost.

Schematic perspective view of the refrigerator according to Embodiment 1 of the present invention. The schematic perspective view which shows the partition wall attachment state of the refrigerator of the embodiment The perspective view of the partition wall of the refrigerator of the embodiment GG sectional view of FIG. Schematic showing a jig when filling the partition wall of the refrigerator of the same embodiment with foam insulation State diagram when filling the partition wall of the refrigerator of the same embodiment with foam insulation Schematic which shows the jig | tool at the time of filling the heat insulation box of the refrigerator of the same embodiment with a foam heat insulating material. Sectional drawing of the principal part which shows the state which incorporated the partition wall of the refrigerator of the embodiment in the inner box The perspective view which shows the state which assembled the partition wall of the refrigerator of the embodiment Sectional drawing of the partition wall of the refrigerator of the embodiment (A) The perspective view which shows the foam heat insulating material inlet of the partition wall of the refrigerator of the embodiment, (b) The principal part perspective view which shows the comparative example of a foam heat insulating material inlet, (c) Of the foam heat insulating material inlet The principal part perspective view which shows another comparative example (A) Schematic cross-sectional view showing the penetration part of the partition wall of the refrigerator of the second embodiment, (b) Schematic cross-sectional view showing a comparative example of the penetration part of the partition wall (A) Schematic cross-sectional view showing the penetration part of the partition wall of the refrigerator of the embodiment, (b) Schematic cross-sectional view showing a comparative example of the penetration part of the partition wall

The invention described in claim 1 is a heat insulating box having an outer box, an inner box, and a foam heat insulating material, a partition wall that divides the heat insulating box into a plurality of storage chambers, and a front opening of the storage chamber. In the refrigerator comprising a door provided, the partition wall is a single unit filled with foam insulation material in the inner box and filled with foam insulation material between the outer box and the inner box in, the partition wall is formed by joining the upper and lower plates, and the junction surface of the upper and lower flange joint surfaces of the upper and lower plates when the upper and lower plates covering the upper and lower jigs when to fill the foam insulation Since the upper and lower flanges are provided so as to be on the same surface, and only one of the joint surfaces of the upper and lower plates is provided with an opening for filling the foamed heat insulating material, the joint surface of the plate can be formed with a simple mold. Form an opening to fill one side with foam insulation It is possible, it can be a heat insulating box body having a heat insulating partition wall for partitioning the heat-insulating main body into a plurality of storage chambers is formed in the high-quality low-cost.

The invention of claim 2 is the invention according to claim 1, by the partition wall having an opening U-shaped to only one of the bonding surfaces of the upper plate or the lower plate, Including the formation of the partition wall, the die can be simplified, and the cost can be further reduced.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the opening is disposed at a joint portion between the partition wall and the inner box, so that the opening for filling the foam heat insulating material is provided. The portion can be prevented from being directly exposed, and the design can be improved, and the heat insulating property can be prevented from being lowered due to water absorption of the foam heat insulating material.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments.

(Embodiment 1)
1 is a schematic perspective view of a refrigerator according to Embodiment 1 of the present invention, FIG. 2 is a schematic perspective view showing a partition wall mounting state of the refrigerator according to the embodiment, and FIG. 3 is a diagram of the partition wall of the refrigerator according to the embodiment. FIG. 4 is a cross-sectional view taken along the line GG of FIG. 3, FIG. 5 is a schematic view showing a jig used to fill the partition wall of the refrigerator according to the embodiment with foamed heat insulating material, and FIG. FIG. 7 is a schematic diagram showing a jig used to fill the heat insulating box of the refrigerator of the same embodiment with a foam heat insulating material, and FIG. FIG. 9 is a perspective view showing a state in which the partition wall of the refrigerator according to the embodiment is assembled, and FIG. 10 is a refrigerator according to the embodiment. Sectional drawing of the partition wall of FIG. 11, Fig.11 (a) is a perspective view which shows the foaming heat insulating material inlet of the partition wall of the refrigerator of the embodiment FIG. 11 (b) partial perspective view showing a comparative example of the foam insulation injection port, FIG. 11 (c) is a partial perspective view showing another comparative example of the foam insulation injection port.

  1 and 2, a refrigerator 1 includes a heat insulating box 1a having a foam heat insulating material filled between an inner box 2 and an outer box 3, a partition wall 4 that partitions the interior into a plurality of storage rooms, and a door (not shown). Composed. The partition wall 4 is provided with a refrigerating chamber 5 at the upper portion and a freezing chamber 6 at the lower portion, and is controlled to be cooled to a predetermined temperature by a refrigerating cycle (not shown) and a control function component.

  Here, as shown in FIG. 3, the partition wall 4 is a combination of the upper plate 7 and the lower plate 8 and filled with the foam heat insulating material 15 from the inlet 9 on the side surface, and previously filled with the foam heat insulating material 15. Is. And the partition wall 4 is inserted toward the back from the front opening part side of the inner box 2 of the heat insulation box 1a.

  Further, as shown in FIG. 4, an upper flange 10 formed integrally with the upper plate 7 and a lower plate 8 are respectively formed at the joints of the peripheral edges of the upper plate 7 and the lower plate 8 constituting the partition wall 4. And the lower flange 11 formed integrally with the upper flange 10 and the lower flange 11 as a joint surface.

  As shown in FIG. 9, the upper plate 7 and the lower plate 8 are engaged and fixed by a protrusion 21 formed integrally with the lower flange 11 and an engagement hole 22 formed in the upper flange 10. A plurality of protrusions 21 and engagement holes 22 are provided on the side surfaces of the peripheral edges of the upper plate 7 and the lower plate 8. Further, the protrusion 21 is formed in a cross shape in cross section, and has the same size as the diameter of the engagement hole 22. The protrusion 21 may be provided with a taper.

  Further, as shown in FIG. 5, when the foam insulating material 15 is filled from the side inlet 9 by combining the upper plate 7 and the lower plate 8, the upper plate 7 and the lower plate 8 are not deformed by the foam pressure of the heat insulating material. The periphery is covered with the jig 12, the lower jig 13, and the front jig 14, and the foamed heat insulating material 15 is filled into the inside from the injection port 9.

  The upper jig 12 and the lower jig 13 rotate with the front jig 14 as a fulcrum, and the joint surface between the upper jig 12 and the lower jig 13 is the joint surface between the upper flange 10 and the lower flange 11. And the same plane. Since it is set as the said structure, even when it provides the recessed part 16 in the partition wall 4, for example, it can hold down without using a complicated movable jig, and can be filled with the foam heat insulating material 15 reliably.

  Further, as shown in FIG. 6, when the periphery is covered with the upper jig 12, the lower jig 13, and the front jig 14, and the foam insulation 15 is filled from the inlet 9, the inlet 9 The jig is rotated and arranged so that the foam heat insulating material 15 is filled from above. Thereby, the foaming heat insulating material 15 can be reliably filled into the partition wall 4.

  Further, as shown in FIG. 10, the inner surfaces of the upper plate 7 and the lower plate 8 (the filling side of the foam heat insulating material 15) are peeled off so that each plate and the foam heat insulating material 15 are not peeled after the foam heat insulating material 15 is filled. A screw 23 as a prevention means is provided separately. Then, a screw 23 is screwed to a boss portion 24 as a support portion integrally formed with the upper plate 7 and the lower plate 8 to be engaged and supported. Further, the screw 23 is provided with an umbrella part 32 as an undercut part.

Further, as shown in FIG. 11 (a), the inlet 9 of the partition wall 4 is provided with an opening for filling a foamed heat insulating material provided on either the joint surface of the upper plate 7 or the lower plate 8. The entrance 9 is formed, and a U-shaped opening is formed from one of the joining surfaces of the upper plate 7 and the lower plate 8. And the opening part as the injection port 9 is arrange | positioned so that it may be located in the junction part with the inner case 2 in the back side of the partition wall 4. FIG.

  And the partition wall 4 filled with the foam heat insulating material 15 by itself is inserted toward the back from the front opening part of the heat insulation box 1a, and is arrange | positioned at the inner box 2 by making the injection port 9 into the back side. After that, as shown in FIG. 7, the heat insulating box body 1 a (the foam heat insulating material is not filled) composed of the inner box 2 and the outer box 3 is surrounded by the inner jig 17 and the outer jig 18. 1a is filled with foam insulation.

  In addition, when filling the inside of the heat insulation box 1a with the foam heat insulating material, the front opening portion of the heat insulation box 1a is directed downward and the back surface is directed upward. Fill.

  Moreover, you may arrange | position the opening part as the injection port 9 in the side surface side of the partition wall 4 if it is a junction part with the inner box except the front surface.

  Moreover, as shown in FIG. 8, the opening part 19 is provided in the back surface and side surface of the inner box 2 which opposes the partition wall 4 periphery with predetermined spacing. The opening 19 is a vertically long shape formed by straddling the joining surface (horizontal direction) of the upper flange 10 formed integrally with the upper plate 7 of the partition wall 4 and the lower flange 11 formed integrally with the lower plate 8 in the vertical direction. It is a slit-shaped opening.

  A space 31 is provided on the side of the partition wall 4 facing the opening 19 of the inner box 2. That is, in order to constitute the space portion 31, the opening 19 portion of the inner box 2 is formed in a convex curved shape. Further, a sealing material 20 is provided at the end of the space 31.

  And the heat insulation box 1a (the foam heat insulation material is in an unfilled state) composed of the inner box 2 and the outer box 3 is surrounded by the inner jig 17 and the outer jig 18, and the foam heat insulation is placed inside the heat insulation box 1a. In addition to constituting the heat insulating box 1a, the space 31 is filled with a part of the foam heat insulating material via the opening 19, and the partition wall 4 and the inner box 2 are joined by contacting them. is there.

  The operation and action of the above configuration will be described below.

  The refrigerator 1 includes a heat insulating box 1 a having a foam heat insulating material filled between the inner box 2 and the outer box 3, and a partition wall 4 that partitions the interior into a plurality of storage chambers. And the lower plate 8 are combined and filled with the foam heat insulating material 15 from the side inlet 9, and the foam heat insulating material 15 is filled in advance. The degree of freedom increases, and heat insulation and molding quality can be secured at low cost.

  The partition wall 4 filled with the foam heat insulating material 15 alone is inserted from the front opening of the heat insulating box 1a toward the back, and when the foam heat insulating material is filled into the heat insulating box 1a, the inner box The space 31 is partially filled with and brought into contact with the space 31 through the opening 19 to join the partition wall 4 and the inner box 2, so that the adhesiveness between the heat insulating box and the partition wall is improved and heat insulation is performed. The strength of the box can also be increased, and a high-quality refrigerator can be provided at a low cost.

  In addition, the upper flange 10 formed integrally with the upper plate 7 and the lower flange formed integrally with the lower plate 8 are respectively joined to the joint portions of the side edges of the upper plate 7 and the lower plate 8 constituting the partition wall 4. 11, and the upper flange 10 and the lower flange 11 are used as joint surfaces, so that the foam insulation material leakage when the inside of the partition wall 4 is filled with the foam insulation material 15 alone is reliably prevented with a simple structure. be able to.

  Further, the engagement between the upper plate 7 and the lower plate 8 constituting the partition wall 4 is engaged and fixed by the protrusion 21 formed integrally from the lower flange 11 and the engagement hole 22 formed in the upper flange 10. With a simpler structure, it is possible to reliably prevent the foam insulation material from leaking when the inside of the partition wall 4 is filled with the foam insulation material 15 alone.

  Moreover, since the space part 31 is provided in the partition wall 4 side facing the opening part 19 of the inner box 2, the adhesiveness of the heat insulation box 1a and the partition wall 4 can be improved reliably.

  In addition, the inner surfaces of the upper wall 7 and the lower plate 8 of the partition wall 4 (filling side of the foam heat insulating material 15) are provided as a peeling prevention means so that each plate and the foam heat insulating material 15 are not peeled after the foam heat insulating material 15 is filled. Since the screw 23 is provided separately, the mold for molding the upper plate 7 and the lower plate 8 does not need to be a complicated structure such as a movable mold, and can be simplified, and the cost can be reduced. While aiming, peeling of the foam heat insulating material in a partition wall can be prevented, and the intensity | strength of a partition wall can be raised.

  In addition, since the screw 23 is screwed to and supported by the boss portion 24 as a support portion integrally formed with the upper plate 7 and the lower plate 8, the mold during molding maintains a simple structure, The screw 23 as the peeling preventing means can be reliably engaged and supported by the upper plate 7 and the lower plate 8 separately.

  Moreover, since the screw 23 is provided with the umbrella part 32 as an undercut part, peeling of the foam heat insulating material 15 in the partition wall 4 can be prevented more reliably, and the strength of the partition wall 4 can be increased.

  In addition, although the partition wall 4 provided with the peeling prevention means mentioned above demonstrated what was filled with the foam heat insulating material 15 by itself, it is not limited to this, In the state which combined the upper plate 7 and the lower plate 8 The present invention can also be applied to a specification in which when the inside of the heat insulating box 1a is filled with the foam heat insulating material, the space between the upper plate 7 and the lower plate 8 is filled with the foam heat insulating material.

  In addition, the inlet 9 of the partition wall 4 is such that an opening for filling the foamed heat insulating material provided on either the joint surface of the upper plate 7 or the lower plate 8 forms the inlet 9. By forming a U-shaped opening from either one of the joint surfaces of the lower plate 8 or the lower plate 8, an opening for filling the foam insulation with one of the joint surfaces of the plate with a simple mold is formed. Therefore, cost reduction can be achieved.

  That is, FIG. 11B is a perspective view of the main part showing a comparative example of the foam heat insulating material injection port. If the injection port 9a is formed in a circular shape in the lower plate 8, a mold for molding the lower plate 8 is used. Need to have a complicated structure such as a movable type. FIG. 11 (c) is a perspective view showing the main part of another comparative example of the foam heat insulating material injection port, which is formed into a semicircular shape from the joint surface of the upper plate 7 and the lower plate 8 and combined to form a circular shape. In the case of the injection port 9b, the molding die does not need to have a complicated configuration such as a movable die, but in order to combine individually molded ones, the injection port 9b configured on the joint surface is displaced in a circular shape. May occur, and there may be a problem with the foam insulation injection.

  Therefore, by using a U-shaped opening from one of the joining surfaces of the upper plate 7 and the lower plate 8 as in the present embodiment, a foam insulation is provided on one of the joining surfaces of the plate with a simple mold. Can be formed, and the foamed heat insulating material can be reliably filled while reducing the cost.

Moreover, since the opening part as the injection port 9 is arrange | positioned so that it may be located in the junction part with the inner case 2 in the back side or side surface side of the partition wall 4, the opening part for filling the foam heat insulating material 15 is provided. Therefore, it is possible to prevent direct exposure, to improve designability, and to prevent deterioration of heat insulation due to water absorption of the foam heat insulating material.

  In the present embodiment, the refrigerator 1 has been described as having the refrigerator compartment 5 in the upper part and the freezer compartment 6 in the lower part by the partition wall 4, but is not limited to this, and three or more storages are provided. The present invention can also be applied to a refrigerator provided with a plurality of partition walls partitioning into a room.

(Embodiment 2)
FIG. 12A is a schematic cross-sectional view showing the through-hole of the partition wall of the refrigerator according to the second embodiment, FIG. 12B is a schematic cross-sectional view showing a comparative example of the through-wall of the partition wall, and FIG. The cross-sectional schematic which shows the penetration part of the partition wall of the refrigerator of the embodiment, 13 (b) is a cross-sectional schematic diagram which shows the comparative example of the penetration part of a partition wall. Note that the technical concept described in the first embodiment is assumed to be applicable, and a characteristic part of the present embodiment will be described.

  In FIG. 12A, a penetration part 26 serving as an air passage is provided on the back side of the partition wall 4 composed of the upper plate 7 and the lower plate 8. The heat insulating material 25 constituting the penetrating portion 26 is arranged so that the one obtained by molding the penetrating portion 26 in advance is sandwiched when the upper plate 7 and the lower plate 8 are assembled.

  Further, a rib 27 integrally formed from the upper plate 7 is provided at a boundary portion between the foam heat insulating material 15 and the heat insulating material 25 constituting the through portion 26.

  In addition, the rib located in the boundary part of the foam heat insulating material 15 and the heat insulating material 25 which comprises the penetration part 26 has the rib 28 comprised integrally from the upper plate 7, and a lower plate, as shown to Fig.13 (a). The ribs 29 may be configured integrally with the ribs 8, and the ribs 28 and the ribs 29 may be arranged so as to wrap in the vertical direction.

  The operation and action of the above configuration will be described below.

  On the back side of the partition wall 4 composed of the upper plate 7 and the lower plate 8, a through portion 26 as an air passage is provided, and a heat insulating material 25 constituting the through portion 26 is obtained by molding the through portion 26 in advance. Since the upper plate 7 and the lower plate 8 are disposed so as to be sandwiched, it is possible to prevent deformation of the penetrating portion (air passage portion) due to foaming pressure during foaming.

  That is, in the case of a specification that does not use the heat insulating material 25 that constitutes the through portion 26 as shown in a schematic cross-sectional view illustrating a comparative example of the through portion of the partition wall 12 (b), There is a possibility that a problem that a predetermined opening area cannot be secured due to deformation due to foaming pressure at the time of foaming of the foam heat insulating material 15 may occur. On the other hand, in the present embodiment, since the heat insulating material 25 in which the penetrating portion 26 is previously formed is arranged so as to be sandwiched when the upper plate 7 and the lower plate 8 are assembled, the penetrating portion (air passage portion) due to foaming pressure at the time of foaming. Can be reliably prevented.

  Moreover, the rib located in the boundary part of the heat insulating material 15 which comprises the foam heat insulating material 15 and the penetration part 26, as shown to Fig.13 (a), the rib 28 comprised integrally from the upper plate 7, and the lower plate By arranging the rib 29 integrally formed from 8 and wrapping the rib 28 and the rib 29 in the vertical direction, a long creepage distance can be secured by the rib, and deformation of the penetrating portion (air passage portion) at the time of foaming can be achieved. While being able to prevent, a sealing performance can be improved.

That is, in the case of a configuration in which a gap is generated between the ribs as shown in a schematic cross-sectional view showing a comparative example of the through portion of the partition wall 13 (b), in order to prevent leakage of the foam heat insulating material 15, the leakage prevention tape 30 Is necessary. On the other hand, in the present embodiment, the rib 28 integrally formed from the upper plate 7 and the rib 29 integrally formed from the lower plate 8 are arranged so as to wrap in the vertical direction. A long creepage distance can be secured, the sealing performance when foaming heat insulating material 15 is foamed can be improved, and leakage prevention of foam heat insulating material 15 can be realized with a simple structure.

  In the present embodiment, the partition wall 4 filled with the foam heat insulating material 15 alone described in the first embodiment is inserted from the front opening of the heat insulation box 1a toward the back surface, and the heat insulation box 1a When filling the inside with foam insulation, the space 31 is filled with a part of the foam insulation through the opening 19 of the inner box 2 and brought into contact with the partition wall 4 and the inner box 2 to join. Needless to say, the present invention is not limited to this. For example, the heat insulating material 25 that constitutes the through portion 26 is formed by sandwiching the previously formed through portion 26 when the upper plate 7 and the lower plate 8 are assembled. When the foam heat insulating material is filled in the heat insulating box 1a, the space of the upper plate 7 and the lower plate 8 can be simultaneously filled with the foam heat insulating material.

  As described above, the refrigerator according to the present invention can improve the heat insulating property and the molding quality, and can also increase the strength of the heat insulating box, so any cooling provided with the partition wall filled with the foam heat insulating material. Applicable to equipment use.

DESCRIPTION OF SYMBOLS 1 Refrigerator 1a Heat insulation box 2 Inner box 3 Outer box 4 Partition wall 5 Refrigeration room 6 Freezer room 7 Upper plate 8 Lower plate 9 Inlet 10 Upper flange 11 Lower flange 12 Upper jig 13 Lower jig 14 Front jig 15 Foaming Heat insulating material 16 Recessed portion 17 Inner jig 18 Outer jig 19 Opening portion 20 Sealing material 21 Projection 22 Engagement hole 23 Screw 24 Boss portion 25 Heat insulating material 26 Through portion 27, 28, 29 Rib 31 Space portion 32 Umbrella portion

Claims (3)

In a refrigerator comprising: a heat insulating box having an outer box, an inner box, and a foam heat insulating material; a partition wall that divides the heat insulating box into a plurality of storage rooms; and a door provided at a front opening of the storage room. The partition wall is a single unit filled with foam heat insulating material in the inner box, and is filled with foam heat insulating material between the outer box and the inner box. The partition wall has upper and lower plates. The upper and lower flanges are formed so that the joint surface when the upper and lower plates are covered with the upper and lower jigs when the foam insulation material is filled inside is flush with the joint surface with the upper and lower flanges of the upper and lower plates. A refrigerator comprising an opening for filling a foamed heat insulating material only on one of the joining surfaces of the upper and lower plates. The partition wall refrigerator according to claim 1, characterized in that with an opening U-shaped to only one of the bonding surfaces of the upper plate or the lower plate. The refrigerator according to claim 1 or 2, wherein the opening is disposed at a joint portion between the partition wall and the inner box.

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