WO2014087585A1

WO2014087585A1 - Refrigerator

Info

Publication number: WO2014087585A1
Application number: PCT/JP2013/006753
Authority: WO
Inventors: 平井　剛樹
Original assignee: パナソニック株式会社
Priority date: 2012-12-05
Filing date: 2013-11-18
Publication date: 2014-06-12
Also published as: DE212013000244U1; CN205351925U; JP6167278B2; JP2014112005A

Abstract

This refrigerator is equipped with a thermal insulated shell (21) which includes an expanded thermal insulating material (24) filling the space between an outer shell (23) and an inner shell (22), and which has a front surface opening (21a). The front surface opening (21a) has an outer shell front part (23a) of the outer shell (23) and an inner shell front part (22a) of the inner shell (22). The outer shell front part (23a) is provided with an outer shell planar part (23b) extending parallel to the opening surface of the front surface opening (21a) of the thermal insulated shell (21). The inner shell front part (22a) and the outer shell planar part (23b) on the thermal insulating material thereof are fastened by a fastening member (28), and the extent of application in the width direction of the fastening member (28) is determined prior to fastening the fastening member (28).

Description

refrigerator

The present invention relates to the structure of a heat insulating box of a refrigerator.

Conventionally, in order to simplify the structure of a heat insulating box of a refrigerator, there is one in which an outer box and an inner box are fixed with an adhesive or an adhesive. (For example, see Patent Document 1)
6 is a schematic perspective view of a conventional refrigerator, and FIG. 7 is a sectional view taken along line 7-7 of FIG.

6 and 7, the heat insulating box 2 of the refrigerator 1 is configured by filling and foaming a foam heat insulating material 5 between the outer box 3 and the inner box 4. The outer box 3 has the outer box front flange 3a folded back to form a folded portion 3b. The inner box 4 includes an inner box front flange 4a, and the outer surface of the inner box front flange 4a and the inner surface of the outer box front flange 3a excluding the folded portion 3b are fixed by an adhesive 6 such as an adhesive or an adhesive. is doing.

However, in this conventional refrigerator configuration, the application range (L1) and the application before the fixing agent 6 that fixes the outer surface of the inner box front flange 4a and the inner surface of the outer box front flange 3a excluding the folded portion 3b are fixed. The thickness (T1) is not clear. When the coating range (L1) is narrow or the coating thickness (T1) is small, there is a problem that the fixing strength cannot be secured.

The present invention ensures a predetermined fixing strength with respect to the fixing between the front part of the inner box and the flat part of the outer box.

Japanese Utility Model Publication No.58-111893

The refrigerator of the present invention foams and fills a heat insulating material between the outer box and the inner box, and provides a heat insulating box body having a front opening, and the front opening is the outer box front part of the outer box and the inner box of the inner box. And a front part. Further, the front part of the outer box includes an outer box flat part extending parallel to the opening surface of the front opening of the heat insulating box. Further, the front part of the inner box and the heat insulating material side of the flat part of the outer box were fixed by a fixing member, and the application range in the width direction of the fixing member before fixing the fixing member was 8 mm to 10 mm.

Thereby, a predetermined fixing strength can be secured with respect to the fixing between the front part of the inner box and the flat part of the outer box. Therefore, the heat insulation box can have predetermined rigidity, and the safety of the refrigerator can be ensured.

FIG. 1 is a front view of the refrigerator in the first embodiment of the present invention. FIG. 2 is a cross-sectional view taken along line 2-2 of FIG. FIG. 3 is a relational diagram showing the relationship between the application range of the fixing member of the refrigerator and the fixing strength depending on the coating thickness in the first embodiment of the present invention. FIG. 4 is a cross-sectional view of a main part of the refrigerator in the second embodiment of the present invention. FIG. 5 is a cross-sectional view of an essential part of the refrigerator in the third embodiment of the present invention. FIG. 6 is a schematic configuration perspective view of a conventional refrigerator. 7 is a cross-sectional view taken along line 7-7 of FIG.

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

(First embodiment)
FIG. 1 is a front view of the refrigerator in the first embodiment of the present invention. FIG. 2 is a cross-sectional view taken along line 2-2 of FIG. FIG. 3 is a relational diagram showing the relationship between the application range of the fixing member of the refrigerator and the fixing strength depending on the coating thickness in the first embodiment of the present invention.

1 and 2, the heat insulating box 21 of the refrigerator main body 20 includes an inner box 22 formed of, for example, an ABS sheet by male vacuum forming, and an outer box 23 formed of a metal magnetic material such as a steel plate. The heat insulating material 24 is formed from a heat insulating wall filled with foam. The heat insulating box 21 has a front opening 21a, and is divided into upper and lower parts by a partition wall 25, and has a refrigerator compartment 26 formed in the upper part, a freezer compartment 27 formed in the lower part, and a plurality of storage rooms.

The heat insulation box 21 includes a refrigeration cycle (not shown) that cools the refrigerator body 20 during operation, the storage set temperature of the refrigerator compartment 26 is set to a refrigeration temperature zone, and the storage preset temperature of the freezer compartment 27 is set to a refrigeration temperature zone. Is set.

Also, the front of each storage room is provided with a refrigerator compartment door 26a and a freezer compartment door 27a, which are connected to the heat insulation box 21 by covering the front opening 21a when fully closed, and form a heat insulation space, respectively.

The front opening 21a includes an inner box front part 22a and an outer box front part 23a.

The outer box front portion 23a is formed by being bent integrally with the outer surface of the heat insulating box 21 formed by the outer box 23, and has an outer box plane portion 23b extending in parallel with the opening surface of the front opening 21a of the refrigerator body 20. And the end surface of the outer box plane part 23b is arrange | positioned in each storeroom space. In addition, the outer case front part 23a of the refrigerator in this Embodiment is comprised only by the outer case plane part 23b.

The inner box front part 22a is arranged closer to the heat insulating material 24 than the outer box front part 23a.

The inner box front portion 22a is formed by integral molding with the upper and lower surfaces and both side surfaces of the inner box 22, and extends in parallel with the outer box plane portion 23b. The inner box plane portion 22b and the inner box 22 And an inner box step portion 22c that connects the upper and lower surfaces and both side surfaces. That is, the inner box stepped portion 22 c is formed in a stepped shape from the end of the inner box flat surface portion 22 b on the storage chamber side toward the back of the refrigerator main body 20.

Further, the inner box flat surface portion 22b is fixed to the heat insulating material 24 side of the outer box flat surface portion 23b by the fixing member 28 using an adhesive or an adhesive such as a double-sided tape around the entire front opening 21a.

At this time, the end surface of the outer box plane portion 23b is substantially the same as the end portion on the storage chamber side of the inner box plane portion 22b, or slightly outside the end portion on the storage chamber side of the inner box plane portion 22b. Therefore, it arrange | positions so that the outer case flat part 23b which is not fixed by the fixing member 28 may not be exposed to the inner case step part 22c.

Further, the application range (L2) in the width direction of the fixing member before fixing the fixing member 28 is set to 8 mm, and the coating thickness (T2) is set to 0.2 mm.

About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

First, since the inner box front part 22a and the outer box front part 23a are fixed by the fixing member 28 in the entire periphery of the front opening 21a, the heat insulating material 24 leaks even if the heat insulating material 24 is foam-filled. No.

Securing the flatness of each of the inner box plane part 22b and the outer box plane part 23b is necessary in order to fix them stably.

Since the outer box 23 uses a steel plate, it is relatively easy to ensure the flatness of the outer box flat portion 23b.

On the other hand, the inner box 22 formed by male vacuum molding tends to have the thinnest inner box plane part 22b due to the characteristics of molding, and the inner box plane part 22b is likely to be wavy and warped during molding. Become.

However, in the present embodiment, by providing the inner box step portion 22c, the length of the inner box plane portion 22b is shortened, and undulation and warpage are less likely to occur.

Also, by providing the inner box step portion 22c, the secondary moment of the cross section of the inner box front portion 22a increases, and the rigidity of the inner box front portion 22a increases. As a result, waving and warping of the inner box front portion 22a can be further prevented, and the inner member front portion 22a and the outer case flat surface portion 23b can be easily fixed by the fixing member 28.

Further, since the end surface of the outer box flat surface portion 23b is arranged so as not to be exposed to the inner box step portion 22c, it is difficult for the user to touch the end surface of the outer box flat surface portion 23b.

As described above, in the present embodiment, the flatness of the inner box plane portion 22b can be ensured without using a complicated mold structure or equipment for molding the inner box 22, and the refrigerator body 20 The appearance design can be kept stable.

Moreover, the inner box flat surface portion 22b and the outer box flat surface portion 23b can be easily fixed by the fixing member 28, and the stability of the appearance design can be further improved.

Furthermore, since the possibility that the user can touch the end surface of the outer box plane portion 23b can be reduced, the safety of the refrigerator body 20 can be ensured.

FIG. 3 shows the result of verification of the fixing strength by changing the application range and application thickness of fixing members such as various adhesives and double-sided tapes.

According to this, it can be seen that the degree of decrease in the fixing strength when the application range (L2) is changed from 8 mm to 5 mm is large.

Further, even if the coating range (L2) is expanded to 15 mm, it is not possible to obtain a fixing strength nearly double that when the coating range (L2) is 8 mm. Therefore, the coating range (L2) is about 8 mm, and at most 10 mm. Is considered sufficient.

The fixing strength between the inner box front portion 22a and the outer box flat surface portion 23b by the fixing member 28 greatly affects the rigidity of the heat insulating box body 21, and ensures the safety of the refrigerator main body 20 by providing a predetermined fixing strength. be able to.

On the other hand, limiting the application range of the fixing member 28 may naturally reduce the fixing strength, but it is natural that the material cost of the fixing member 28 and the increase in the number of application steps can be suppressed. In addition, it is preferable to reduce the coating range (L2) as much as possible because the length of the outer box flat surface portion 23b can be shortened and the refrigerator main body 20 looks smart. I can say that.

Therefore, the application range (L2) can be said to be a very important parameter when the inner box front part 22a and the outer box flat part 23b are fixed by the fixing member 28.

On the other hand, it can be seen that when the coating thickness (T2) is thinner than 0.2 mm, the fixing strength rapidly decreases.

This is because it is difficult to obtain a sufficient fixing area when the coating thickness (T2) is thin due to warpage or minute unevenness that occurs during the molding of the inner box front portion 22a, and the variation in fixing strength increases. This is thought to be a factor.

On the other hand, since the fixing strength does not increase even if the thickness is increased, the thinnest fixing member 28 may be selected in consideration of variations in fixing strength in order to suppress the increase in material cost and application man-hour of the fixing member 28. .

In this embodiment, since the fixing strength does not change greatly even when the coating thickness (T2) is 0.6 mm or more, the upper limit of the coating thickness (T2) is preferably 0.6 mm. From the results shown in FIG. 3, it is desirable that the lower limit of the coating thickness (T2) is 0.2 mm in order to secure the fixing strength.

(Second Embodiment)
FIG. 4 shows a cross-sectional view of the main part taken along line 2-2 of FIG. 1 of the refrigerator according to the second embodiment of the present invention. In addition, the same code | symbol is attached | subjected about the structure same as the 1st Embodiment of this invention, and detailed description is abbreviate | omitted.

In FIG. 4, the heat insulation box 101 of the refrigerator main body 100 has, for example, an inner box 102 formed of an ABS sheet by male vacuum forming, and an outer box 103 formed of a metal magnetic material such as a steel plate. . And the heat insulation wall which foam-filled the heat insulating material 104 was formed between the inner box 102 and the outer box 103, and the heat insulation box 101 has the front opening part 101a in the front.

The front opening 101a includes an inner box front part 102a and an outer box front part 103a.

The outer box front part 103a is integrally formed with the outer box 103 which is the outer surface of the heat insulating box 101, and has an outer box flat part 103b extending in parallel with the opening surface of the front opening 101a of the heat insulating box 101. And the end surface of the outer box plane part 103b is arrange | positioned in each storeroom space.

The inner box front part 102a is arranged closer to the heat insulating material 104 than the outer box front part 103a.

The inner box front portion 102a is formed by integral molding with the upper and lower surfaces and both side surfaces of the inner box 102, and has an inner box plane portion 102b extending in parallel with the outer box plane portion 103b. Furthermore, the inner box front part 102a has an inner box flat step part 102b and an inner box convex step part 102c that connects the upper and lower surfaces and both side faces of the inner box 102.

The inner box convex stepped portion 102c once protrudes from the end of the inner box flat surface portion 102b on the storage chamber side in the front direction of the refrigerator main body 100 and protrudes the same as or slightly forward of the end surface of the outer box flat surface portion 103b. After extending in a planar shape toward the storage chamber in the opening surface direction, the upper and lower surfaces and both side surfaces of the inner box 102 are connected.

Further, the inner box flat surface portion 102b is fixed to the heat insulating material 104 side of the outer case flat surface portion 103b and the entire circumference of the front opening 101a by a fixing member 105 using an adhesive or an adhesive such as a double-sided tape. .

At this time, the end surface of the outer box flat surface portion 103b is close to the inner box convex stepped portion 102c, and is arranged so that the end surface cannot be seen by the user.

Also, the application range (L3) in the width direction of the fixing member 105 before fixing the fixing member 105 is set to 8 mm to 10 mm, and the coating thickness (T3) is set to 0.2 mm to 0.6 mm.

First, since the inner box front part 102a and the outer box front part 103a are fixed to the entire circumference of the front opening 101a by the fixing member 105, the heat insulating material 104 leaks even if the heat insulating material 104 is foam-filled. There is no.

Further, in the present embodiment, by providing the inner box convex stepped portion 102c, the length of the inner box flat surface portion 102b is minimized, and undulation and warpage are less likely to occur.

Further, by providing the inner box convex stepped portion 102c, the second moment of the cross section of the inner box front portion 102a is increased, and the rigidity of the inner box front portion 102a is increased. The fixing by 105 is made easy.

Further, since the end surface of the outer box flat surface portion 103b is arranged so as not to be exposed to the inner box convex stepped portion 102c, the user does not see or touch the end surface of the outer box flat surface portion 103b.

As described above, in the present embodiment, the flatness of the inner box plane portion 102b can be ensured without using a complicated mold structure or equipment for molding the inner box 102, and the refrigerator main body 100 can be secured. The appearance design can be kept stable.

Further, the inner box flat surface portion 102b and the outer box flat surface portion 103b can be easily fixed by the fixing member 105, and the stability of the appearance design is further increased.

Further, since it is possible to prevent the user from being injured at the end face of the outer box plane portion 103b, the safety of the refrigerator main body 100 can be ensured.

Furthermore, since the end surface of the outer box plane part 103b is not visible to the user, even if a steel plate is used as the material of the outer box 103, it is possible to prevent the appearance design of the refrigerator main body 100 from being deteriorated due to the rust of the outer box plane part 103b.

Further, the amount of the fixing member 105 used is the same as that of the first embodiment, and similarly, the material cost and the application cost of the fixing member 105 are suppressed while securing the rigidity of the heat insulating box 101 and the safety of the refrigerator main body 100. is doing.

(Third embodiment 3)
FIG. 5 is a cross-sectional view of an essential part of the refrigerator in the third embodiment of the present invention. In addition, the same code | symbol is attached | subjected about the structure same as the 1st Embodiment or 2nd Embodiment of this invention, and description is abbreviate | omitted.

In FIG. 5, the heat insulation box 201 of the refrigerator main body 200 has, for example, an inner box 202 formed of an ABS sheet by male vacuum forming, and an outer box 203 formed of a metal magnetic material such as a steel plate. . And the heat insulation wall which foam-filled the heat insulating material 204 between the inner box 202 and the outer box 203 is formed, and the heat insulation box 201 has the front opening part 201a in the front.

The front opening 201a includes an inner box front part 202a and an outer box front part 203a.

The outer box front part 203 a is formed by being bent integrally with the outer box 203 which is the outer surface of the heat insulating box 201, and has an outer box flat part 203 b extending in parallel with the opening surface of the heat insulating box 201. And it has the outer box rising part 203c which was raised from the storage room side edge part of the outer case plane part 203b, and was curled in the back side of the refrigerator main body 200 and the heat insulating material 204 side. And the end surface of the outer box rising part 203c is arrange | positioned in each storeroom space.

The inner box front part 202a is arranged closer to the heat insulating material 204 than the outer box front part 203a.

The inner box front portion 202a is formed by integral molding with the upper and lower surfaces and both side surfaces of the inner box 202. The inner box plane portion 202b extending in parallel with the outer box plane portion 203b, the inner box plane portion 202b, and the inner box 202 An inner box concave stepped portion 202c that connects the upper and lower surfaces and both side surfaces is provided. Further, the inner box front portion 202a has an inner box recess 202d that extends parallel to the longitudinal direction of the inner box flat surface portion 202b and protrudes toward the heat insulating material 204 from the inner box flat surface portion 202b.

The inner box concave stepped portion 202c is formed in a stepped shape from the end on the storage chamber side of the inner box flat surface portion 202b toward the back of the refrigerator main body 200.

Further, the inner box flat surface portion 202b is fixed to the heat insulating material 204 side of the outer case flat surface portion 203b and the entire circumference of the front opening 201a by a fixing member 205 using an adhesive or an adhesive such as a double-sided tape. .

At this time, the outer box rising portion 203c is accommodated in the inner box concave step portion 202c, and is arranged so that the end surface of the outer box rising portion 203c is not visible to the user.

In addition, the application range in the width direction of the fixing member 205 before fixing the fixing member 205 in the present embodiment needs to consider that the inner box concave portion 202d does not contact the outer box flat surface portion 203b. Therefore, it is necessary to set the range (L4 + L5) where the inner box plane part 202b and the outer box plane part 203b contact each other to 8 mm to 10 mm and the coating thickness (T3) to 0.2 mm to 0.6 mm.

First, since the inner box front part 202a and the outer box front part 203a are fixed by the fixing member 205 over the entire circumference of the front opening 201a, the heat insulating material 204 leaks even if the heat insulating material 204 is foam-filled. There is no.

Further, in the present embodiment, by providing the inner box concave stepped portion 202c, the length of the inner box flat surface portion 202b is minimized, and undulation and warpage are less likely to occur.

In addition, by providing the inner box concave stepped portion 202c, the secondary moment of the cross section of the inner box front portion 202a is increased, and the rigidity of the inner box front portion 202a is increased. The fixation by 205 is made easy.

Furthermore, by providing the inner box concave portion 202d, the secondary moment of the cross section of the inner box flat surface portion 202b is increased, so that undulation and warpage are less likely to occur, and fixing by the fixing member 205 is facilitated.

Moreover, since the secondary moment of the cross section of the outer box front part 203a is increased by providing the outer box rising part 203c, and the rigidity of the outer box front part 203a is increased, the fixing by the fixing member 205 is further facilitated.

Further, the end surface of the outer box flat surface portion 203b is accommodated in the inner box concave step portion 202c, so that the user does not see or touch the end surface of the outer case flat surface portion 203b, and it is attractive and compact. A box front part 202a and an outer box front part 203a are arranged.

As described above, in the present embodiment, the flatness of the inner box plane portion 202b can be secured without using a complicated mold structure or equipment for molding the inner box 202, and Appearance design can be kept stable.

Also, the inner box flat surface portion 202b and the outer box flat surface portion 203b are easily fixed by the fixing member 205, and the stability of the appearance design is further increased.

Further, since it is possible to prevent the user from being injured at the end face of the outer box riser 203c, the safety of the refrigerator main body 200 can be ensured.

Furthermore, since the end surface of the outer box rising portion 203c is not visible to the user, even if a steel plate is used as the material of the outer box 203, the appearance design of the refrigerator main body 200 is prevented from being deteriorated due to the rust of the outer box rising portion 203c. it can.

Further, the concept of the application range and the application thickness of the fixing member 205 is the same as that of the first embodiment of the present invention, and in the same way, while securing the rigidity of the heat insulating box 201 and the safety of the refrigerator main body 200, The increase in material cost and application cost of the member 205 is suppressed.

As described above, the refrigerator of the present invention foam-fills the heat insulating material between the outer box and the inner box, provides the heat insulating box body having the front opening, and the front opening is the front of the outer box of the outer box. And an inner box front portion of the inner box. Further, the front part of the outer box includes an outer box flat part extending parallel to the opening surface of the front opening of the heat insulating box. Further, the front part of the inner box and the heat insulating material side of the flat part of the outer box were fixed by a fixing member, and the application range in the width direction of the fixing member before fixing the fixing member was 8 mm to 10 mm.

This makes it possible to have a predetermined fixing strength between the front part of the inner box and the flat part of the outer box, and the heat insulation box has a predetermined rigidity, thereby ensuring the safety of the refrigerator. In addition, it is possible to secure a predetermined fixing strength between the front part of the inner box and the flat part of the outer box without unnecessarily increasing the amount of the fixing member used, thereby suppressing an increase in the material cost of the fixing member and the coating man-hours. can do.

In the invention, the thickness of the fixing member applied before fixing the fixing member is set to 0.2 mm to 0.6 mm.

This allows the inner box front part and the outer box flat part to have a more stable predetermined fixing strength, thereby increasing the safety of the refrigerator. In addition, an increase in the material cost of the fixing member and the number of application steps can be suppressed.

As described above, the refrigerator according to the present invention can secure the rigidity of the heat insulation box while suppressing the increase in the amount of use of the fixing member between the inner box and the outer box and the number of coating steps. It can be applied to various heat insulation boxes provided.

DESCRIPTION OF SYMBOLS 1 Refrigerator 2,21,101,201 Heat insulation box 3,23,103,203 Outer box 3a Outer box front flange 3b Folding part 4,22,102,202 Inner box 4a Inner box front flange 5 Foam insulation 6

Adhesive

20, 100, 200 Refrigerator

main body

21a, 101a, 201a

Front opening

22a, 102a, 202a Inner box

front part

22b, 102b, 202b Inner box plane part 22c Inner

box step part

23a, 103a, 203a Outer box

front part

23b, 103b , 203b Outer

box plane part

24, 104, 204 Heat insulating material 26 Refrigerating room 27

Freezer room

28, 105, 205 Adhering member 102c Inner box convex stepped part 202c Inner box concave stepped part 202d Inner box recessed part 203c Outer box rising part

Claims

A heat insulating material is foam-filled between the outer box and the inner box, and a heat insulating box body having a front opening is provided, and the front opening includes an outer box front part of the outer box and an inner box front part of the inner box. The outer box front part includes an outer box plane part extending in parallel to the opening surface of the front opening part of the heat insulation box body, and the heat insulating material of the inner box front part and the outer box plane part A refrigerator in which the side is fixed by a fixing member, and the application range in the width direction of the fixing member before fixing the fixing member is 8 mm to 10 mm.
The refrigerator according to claim 1, wherein a thickness of the fixing member applied before fixing the fixing member is 0.2 mm to 0.6 mm.
The inner box front portion extends in parallel with the outer box plane portion, and protrudes forward from an end portion of the inner box plane portion on the storage chamber side, and the inner box plane portion and the inner box The refrigerator in any one of Claim 1 or 2 which consists of an inner-box convex step part which connects.
The inner box front part is formed in an inner box plane part extending in parallel with the outer box plane part, and is formed stepwise from the end of the inner box plane part on the storage chamber side toward the back. An outer box plane part that comprises a box flat part and an inner box concave step part that connects the inner box, the outer box front part extending in parallel with the front opening of the heat insulating box, and the outer box plane part The refrigerator according to claim 1, further comprising a curled outer box rising portion that is raised in a depth direction from an end portion on the storage chamber side and is accommodated in the inner box concave stepped portion.