JP2008202915A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily secure the lateral width reference dimension of an outer box and to positively prevent dew formation on an outer box flange in a refrigerator. <P>SOLUTION: This refrigerator includes: the outer box 12 having the outer box flange 12b and a flange bent part 12c; an inner box 17 having an inner box flange 17a; a partition plate 15 provided extending over the outer box flange 12b and fixed through a fastener 20; an anti-dew pipe 11 having a first pipe part 11a and a second pipe part 11b; and a foaming thermal insulating material filling a gap between the outer box 12 and the inner box 17. In this refrigerator, one end 15a of the partition plate 15 is abutted on a portion C of the flange bent part 12c overlapping the outer box side plate 12a, and the other end 15a of the partition plate 15 is abutted on the first pipe part 11a, thereby holding the first pipe part 11a between the other end 15a of the partition plate 15 and the flange bent part 12c. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a refrigerator, and is particularly suitable for a refrigerator provided with a dew prevention pipe that prevents dew on the outer box flange and the partition plate.

  A conventional refrigerator will be described with reference to FIG. The refrigerator includes a steel plate outer box 51, an inner box 52, a steel plate partition plate 54, a dew prevention pipe 57, and a foam heat insulating material 58.

  The outer box 51 extends from the front edge of the outer box side plate 51a to the center side and is folded back to the back side to reach the outer box side plate 51a, and the outer box flange 56a is superposed on the outer box side plate 51a. And a flange bending portion 53 extending to the back side and reaching the center side. The inner box 52 has an inner box flange 52 a inserted into a groove formed by the outer box flange 56 a and the flange bending portion 53.

  The partition plate 54 is provided across the left and right outer box flanges 56 a, and both end portions thereof are overlapped on the back side of the outer box flange 56 a and fixed via screws 55. Specifically, a long hole 59 is formed in the outer box flange 56a, and a lower hole 60 is formed in the partition plate 54, and the partition is obtained by screwing the screw 55 from the front side through the long hole 59 into the lower hole 60. Both ends of the plate 54 are fixed to the outer box flange 56a. The securing of the lateral width reference dimension W1 of the outer box 51 is performed by fastening the partition plate 54 and the outer box flange 56a with screws 55 using a dimensioning jig.

  The dew prevention pipe 57 includes a first pipe portion 57 a inserted in a groove formed by the outer box flange 56 a and the flange bent portion 53, and a second pipe disposed on the back side of the partition plate 54. Part 57b. The foam heat insulating material 58 is filled between the outer box 51 and the inner box 52.

  As patent documents related to such a conventional refrigerator, for example, JP-A-2005-164194 (Patent Document 1) can be cited.

JP 2005-164194 A

  However, in the conventional refrigerator, the partition plate 54 is arranged so as to be movable in the left-right direction, and the partition plate 54 and the outer box flange 56a are fastened with screws 55 through the long holes 59 of the outer box flange 56a. In order to secure the width reference dimension W1 of the outer box 51, it is necessary to use a dimensioning jig one by one, and the workability is poor.

  In the conventional refrigerator, the first pipe portion 57a moves inside the groove formed by the outer casing flange 56a into which the first pipe portion 57a of the dew prevention pipe 57 is inserted and the flange bent portion 53, In some cases, the outer casing flange 56a and the flange bending portion 53 are not in close contact with each other, and the outer casing flange 56a cannot be reliably exposed.

  Further, in the conventional refrigerator, the first pipe portion 57a of the dew prevention pipe 57 and the partition plate 54 are arranged apart from each other, and the partition plate 54 cannot be heated by the first pipe portion 57a. There is a possibility that the dew condensation of the overlapping portion between the box flange 56a and the partition plate 54 cannot be sufficiently prevented.

  An object of the present invention is to provide a refrigerator capable of easily securing the width reference dimension of the outer box and reliably preventing the outer box flange from being exposed.

  In order to achieve the above-mentioned object, the present invention provides a double outer box flange extending from the front edge of the outer box side plate to the center side and then folding back to the outer box side plate. An outer box made of a steel plate having a flange bent portion that extends to the back side and extends to the back side by overlapping with the box side plate, and an inner box flange inserted into a groove formed by the outer box flange and the flange bent portion An inner box, a partition plate made of steel plate that is provided across the outer box flange on both the left and right sides, and whose both end portions are overlapped on the back side of the outer box flange and fixed via fasteners, and the outer box A dew-preventing pipe having a first pipe portion inserted into a groove formed by a flange and the flange bending portion, a second pipe portion disposed on the back side of the partition plate, and the outer box Foam break filled between the inner box and the inner box In the refrigerator comprising the material, one end of the partition plate is brought into contact with a portion of the flange bent portion that overlaps the outer box side plate, and the other end of the partition plate is connected to the first pipe. The first pipe portion is sandwiched between the other end portion of the partition plate and the flange bending portion.

A more preferable specific configuration example of the present invention is as follows.
(1) A partition bent portion protruding in the back direction is formed at both ends of the partition plate, and a side surface of one of the partition bent portions is brought into contact with an overlapping portion of the flange bent portion with the outer box side plate, The side surface of the partition bending portion is brought into contact with the first pipe portion.
(2) The dimension from one abutment part to the other abutment part of the partition plate is subtracted from the width standard dimension of the outer box, the plate thickness of the outer box side plate and the outer diameter of the first pipe part. The dimensions were
(3) A deformable copper pipe is used as the dew prevention pipe, and the first pipe portion is deformed and sandwiched between the other partition bent portion of the partition plate and the flange bent portion.

  According to the refrigerator of the present invention having such a configuration, the width reference dimension of the outer box can be easily secured, and the outer box flange can be reliably prevented from being exposed.

Hereinafter, a plurality of embodiments of the present invention will be described with reference to the drawings. The same reference numerals in the drawings of the respective embodiments indicate the same or equivalent.
(First embodiment)
The refrigerator of 1st Embodiment of this invention is demonstrated using FIGS. 1-10.

  First, the whole refrigerator will be described with reference to FIGS. As shown in FIGS. 1 and 2, the refrigerator includes a refrigerator body 1 and doors 6 to 10. The refrigerator body 1 is provided with a refrigeration cycle shown in FIG. In this refrigeration cycle, the compressor 13, the condenser 27, the dew prevention pipe 11, the capillary tube 14 and the evaporator 28 are connected in this order via the refrigerant pipe, and the refrigerant is circulated.

  As shown in FIG. 2, the refrigerator main body 1 has storage rooms in the order of a refrigerator compartment 2, a second freezer compartment 3, a first freezer compartment 4, and a vegetable compartment 5 from the top. The second freezing room 3 is divided into an ice making room 3a and a quick freezing room 3b. These storage chambers 2 to 5 are partitioned by a partition wall 23 (see FIGS. 8 and 9) provided in the inner box 17.

  As shown in FIG. 1, doors 6 to 10 that close the front opening of the chamber are provided on the front surface of the refrigerator body 1. The refrigerator compartment door 6 closes the front opening of the refrigerator compartment 2, the ice making compartment door 7 closes the front opening of the ice making compartment 3a, and the quick freezing compartment door 8 closes the front opening of the quick freezing compartment 3b. The first freezer compartment door 9 is a door for closing the front opening of the first freezer compartment 4, and the vegetable compartment door 10 is a door for closing the front opening of the vegetable compartment 5.

  As shown in FIGS. 4 to 7, the refrigerator main body 1 includes a steel plate outer box 12, an inner box 17, a steel plate partition plate 15, a dew prevention pipe 11, and a foam heat insulating material 18.

  The outer box 12 is formed as a gate-shaped outer plate made of left and right side plates 12a and a top plate by forming a single steel plate into a portal shape using a forming roll device or the like. The outer box 12 is formed in a box shape by combining a back plate and a bottom plate with the portal outer plate.

  The outer box 12 is superposed on a double outer box flange 12b extending from the front edge of the outer box side plate 12a to the center side and then folded back to the outer box side plate and from the outer box flange 12b to the outer box side plate 12a. And a flange bending portion 12c extending to the back side and reaching the center side. The outer box flange 12b and the flange bent portion 12c form a cross section in an R shape, and a groove is formed between the outer box flange 12b and the flange bent portion 12c. A U shape may be used instead of the R shape.

  The inner box 17 forms the refrigerator compartment 2, the second freezer compartment 3, the first freezer compartment 4, and the vegetable compartment 5 described above, and is produced by vacuum forming a synthetic resin thin plate. An inner box flange 17a is formed on the front edge of the inner box 17 over the entire circumference. By inserting the inner box flange 17a into a groove formed by the outer box flange 12b and the flange bending portion 12c, the inner box 17 is assembled to the portal outer plate.

  The foam heat insulating material 18 is composed of a rigid polyurethane foam filled between the outer box 12 and the inner box 17.

  The partition plate 15 covers the front surface of the partition wall 23, is provided across the outer box flanges 12b on the left and right sides, and forms a packing receiving surface for the doors on both sides. The left and right end portions of the partition plate 15 are overlapped on the back side of the outer box flange 12 b and are fixed via screws 20. Specifically, a long hole 21 is formed in the outer casing flange 12b, and a lower hole 24 is formed in the partition plate 15. A partition is formed by screwing the screw 20 into the lower hole 24 through the long hole 21 from the front side. Both ends of the plate 15 are fixed to the outer box flange 12b. A partition bent portion 15 a that protrudes in the back direction is formed at both left and right ends of the partition plate 15. The side surface of one partition bending portion 15a is in contact with the overlapping portion C with the outer box side plate 12a of the flange bending portion 12c, and the side surface of the other partition bending portion 15a is in contact with the first pipe portion 11a.

  The dew prevention pipe 11 is composed of a pipe that becomes hot during operation of the refrigeration cycle, specifically, a high temperature pipe between the condenser 27 and the capillary tube 14. The high-temperature refrigerant that has exited the condenser 27 during the operation of the refrigeration cycle enters the dew prevention pipe 11 from the inlet Q, exits the dew prevention pipe 11 from the outlet P, and flows to the capillary tube 14. The dew prevention pipe 11 is formed by bending a single pipe in a meandering manner.

  The dew prevention pipe 11 includes a first pipe portion 11a inserted in a groove formed by the outer box flange 12b and the flange bent portion 12c, and a second pipe disposed on the back side of the partition plate 15. The pipe portion 11b. The first pipe portion 11a is disposed over substantially the entire circumference of the outer box flange 12b, and prevents the dew condensation by heating the outer box flange 12b. The 2nd pipe part 11b is arrange | positioned so that it may reciprocate from the 1st pipe part 11a to the partition plate 15, and heats the partition plate 15 and performs dew prevention. The second pipe portion 11b is basically formed in a U shape.

  Next, an assembling procedure of the refrigerator body 1 and a specific arrangement structure of the dew prevention pipe 11 and the partition plate 15 will be described with reference to FIGS. 4 to 10.

  As shown in FIG. 8, the dew prevention pipe 11 is disposed on the peripheral edge of the inner box flange 17 a and the front surface of the partition wall 23. A step pressing portion 17b (see FIG. 7) is formed on the peripheral edge of the inner box flange 17a so as to protrude to the back side, and the first pipe portion 11a partially protrudes outward from the step pressing portion 17b. And the clip 22 is engaged at a plurality of positions. The clip 22 is striated and made of a very thin metal plate such as a stainless steel plate. Further, a recess 23a (see FIG. 9) is formed on the front surface of the partition wall 23 up to the left and right ends, and a notch 25 continuous with the recess 23a is formed at the peripheral edge of the inner box flange 17a. The pipe portion 11b is arranged in a state of being accommodated in the drawing recess 23a from the notch 25.

  Next, the partition plate 15 is attached so as to cover the partition wall 23 and the front surface of the second pipe portion 11b, and an assembly including the inner box 17, the dew prevention pipe 11 and the partition plate 15 is formed. The partition plate 15 is attached so as to be slightly movable left and right.

  This assembly is assembled to the left and right outer box side plates 12a and the portal outer plate constituting the top plate. This assembly is performed by inserting both ends of the inner box flange 17a, the first pipe portion 11a and the partition plate 15 into a groove formed by the outer box flange 12b and the flange bent portion 12c.

  By this assembly, in the portion corresponding to the partition plate 12, the side surface of the partition bent portion 15a of the left partition plate 15 is brought into contact with the overlapping portion C of the flange bent portion 12c and the outer box side plate 12a, and the right partition bent portion The side surface of 15a is brought into contact with the first pipe portion 11a, and the first pipe portion 11a is sandwiched between the right side partition bent portion 15a and the overlapping portion C.

  Here, the dimension (length dimension of the partition plate 15) W2 from the left contact portion to the right contact portion of the partition plate 15 is determined from the width reference dimension W1 of the outer box 12 and the thickness of the overlap portion C. (Dimension obtained by adding the plate thickness dimension of the outer box side plate 12a and the plate thickness dimension of the flange bent portion 12c) The dimension obtained by subtracting the outer diameter W3 of W4 and the first pipe portion 11a. As a result, the assembly can be assembled to the gate-shaped outer plate, and the width reference dimension W1 of the outer box 12 can be easily obtained by simply pressing the left and right outer box side plates 12a from both sides. In this state, the screw 20 is screwed into the lower hole 24 of the partition plate 15 through the long hole 21 of the outer box flange 12b from the front side, thereby fixing both ends of the partition plate 15 so as to be in close contact with the outer box flange 12b. Thereby, the width reference dimension W1 of the outer box 12 can be easily secured. As an example of specific dimensions of each member, the plate thickness (half of W4) of the outer box 12 is 0.5 mm, the outer diameter W3 of the dew prevention pipe 11 is 4.0 mm, and the partition plate 15 The diameter of the lower hole 24 is 4.0 mm, the diameter of the screw 20 is 4.0 mm, and the long hole 21 of the outer box flange 12b is 6.0 mm.

  In addition to the portion corresponding to the partition plate 12, as shown in FIG. 7, the first pipe portion 11a is sandwiched between the stepped portion 17b of the inner box flange 17a and the outer box flange 12b.

  9 and 10 are diagrams for simply explaining the arrangement relationship between the partition plate 15 and the first dew prevention pipe 11 and other members, and do not explain the assembly order.

  Next, the outer box bottom plate and the outer box back plate are assembled to the gate-shaped outer plate to form the outer box 12, and then the foamed heat insulating material 18 is formed by filling the rigid polyurethane foam between the outer box 12 and the inner box 17. To do. At this time, the flange bent portion 12c comes into contact with the back side of the inner box flange 17a so that there is no gap between the inner box flange 17a and the flange bent portion 12c. This prevents the rigid polyurethane foam from leaking out from the contact portion.

  According to the configuration of this embodiment, one end 15a of the partition plate 15 is brought into contact with the portion C that overlaps the outer box side plate 12a of the flange bending portion 12c, and the other end 15a of the partition plate 15a is connected to the first end 15a. Since the first pipe portion 11a is held between the other end portion 15a of the partition plate 15 and the flange bent portion 12c, the following effects are obtained. The lateral width of the outer box 12 can be regulated by the partition plate 15 and the first pipe portion 11a, and the reference dimension W1 of the outer box 12 can be easily ensured. Thereby, consistency with the refrigerator main body 1 and the doors 6-10 can be taken. Further, the heat of the first pipe portion 11a can be directly and reliably conducted to the end portion of the partition plate 15 and the flange bent portion 12c, and the outer casing flange 12a can be reliably prevented from being exposed.

  Further, partition bent portions 15a projecting in the back direction are formed at both ends of the partition plate 15, and the side surface of one partition bent portion 15a is brought into contact with the overlapping portion C with the outer box side plate 12a of the flange bent portion 12c, Since the side face of the other partition bending portion 15a is in contact with the first pipe portion 11a, the strength of the partition plate 15 can be secured and a reliable contact state can be obtained, and when the foam heat insulating material 18 is filled. The movement of the first pipe portion 11a can be prevented. Also from this point, the heat of the 1st pipe part 11a can be reliably transmitted to the outer box flange 12b and the flange bending part 12c.

Further, since both end portions of the partition plate 15 and the partition bent portion 15a are in contact with the strong portion composed of the outer box side plate 12a and the overlapping portion C, the partition plate 15 can be partitioned even if a great force is applied to the partition plate 15 during assembly. The plate 15 does not deform the outer box flange 12b.
(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 11 is a cross-sectional view of an essential part of the refrigerator according to the second embodiment of the present invention. The second embodiment is different from the first embodiment in the points described below, and the other points are basically the same as those in the first embodiment, and thus redundant description is omitted.

  In the second embodiment, a deformable copper pipe is used as the dew prevention pipe 11, and the first pipe portion 11a is pressed from both sides of the outer box by an operator when the first pipe portion 11a is assembled to the outer box 12. It is deformed within the tolerance range of the reference dimension W1, and is sandwiched between the other partition bent portion 15a of the partition plate 15 and the flange bent portion 12c.

  With such a configuration, the adhesion and contact area between the first pipe portion 11a and the partition bending portion 15a and the flange bending portion 12c are increased, and the heat of the first pipe portion 11a is transferred to the partition bending portion 15a and the flange bending portion 12c. Heating can be performed sufficiently.

It is a front view of the refrigerator of 1st Embodiment of this invention. It is a front view of the state which removed the door of the refrigerator of FIG. It is a figure which shows the refrigerating cycle of the refrigerator of FIG. It is a figure explaining the arrangement | positioning place of the dew prevention pipe of the refrigerator of FIG. It is AA sectional drawing of FIG. It is a principal part enlarged view of FIG. It is a BB cross-sectional enlarged view of FIG. It is a front view of the assembly | attachment body of the inner box and dew prevention pipe in 1st Embodiment. It is a perspective view for demonstrating simply the arrangement | positioning relationship between the partition plate in the 1st Embodiment, a dew prevention pipe, and another member. It is sectional drawing for demonstrating simply the arrangement | positioning relationship with the partition plate in the 1st Embodiment, a dew prevention pipe, and another member. It is principal part sectional drawing of the refrigerator of 2nd Embodiment of this invention. It is a cross-sectional view of the conventional refrigerator.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Refrigerator main body, 2 ... Refrigeration room, 3 ... Second freezing room, 3a ... Ice making room, 3b ... Rapid freezing room, 4 ... First freezing room, 5 ... Vegetable room, 6 ... Cold room door, 7 ... Ice making room door, 8 ... Rapid freezing room door, 9 ... First freezing room door, 10 ... Vegetable room door, 11 ... Dew prevention pipe, 11a ... First pipe part, 11b ... Second pipe part, 12 ... outer box, 12a ... side plate, 12b ... outer box flange, 12c ... flange bent part, 13 ... compressor, 14 ... capillary tube, 15 ... partition plate, 15a ... partition bent part, 17 ... inner box, 17a ... inner box Flange, 17b ... stepped portion, 18 ... heat insulating material, 20 ... screw, 21 ... long hole, 22 ... clip, 23 ... partition wall, 23a ... depression, 24 ... lower hole, 25 ... notch, 27 ... condenser, 28: Evaporator.

Claims (4)

A double outer box flange extending from the front edge of the outer box side plate to the center side and then folded back to the outer box side plate, overlapping from the outer box flange to the outer box side plate and extending to the back side, further center side An outer box made of a steel plate having a flange bending portion leading to
An inner box having an inner box flange inserted into a groove formed by the outer box flange and the flange bending portion;
A partition plate made of a steel plate that is provided across the outer box flange on both the left and right sides, and whose both ends are overlapped on the back side of the outer box flange and fixed via a fastener,
A dew prevention pipe having a first pipe portion inserted into a groove formed by the outer box flange and the flange bent portion, and a second pipe portion disposed on the back side of the partition plate;
In a refrigerator comprising a foam heat insulating material filled between the outer box and the inner box,
One end of the partition plate is brought into contact with a portion of the flange bent portion that overlaps the outer box side plate, the other end of the partition plate is brought into contact with the first pipe portion, and the first pipe A pipe part is sandwiched between the other end part of the partition plate and the flange bending part.   In claim 1, forming a partition bending portion projecting in the back direction at both ends of the partition plate, the side surface of the one partition bending portion is brought into contact with the overlapping portion of the flange bending portion with the outer box side plate, A refrigerator characterized in that a side surface of the other partition bending portion is brought into contact with the first pipe portion.   In Claim 1, the dimension from one contact part to the other contact part in the partition plate is determined from the width reference dimension of the outer box to the plate thickness of the outer box side plate and the outer diameter of the first pipe part. Refrigerator characterized by having the dimensions minus.   3. The deformable copper pipe according to claim 2, wherein a deformable copper pipe is used, and the first pipe portion is deformed and sandwiched between the other partition bent portion of the partition plate and the flange bent portion. A refrigerator characterized by that.

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