JP2018071899A - refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively prevent heat leakage from a cutout portion formed on a folded portion of an outer box to take out a heat radiation pipe to the external of a heat insulating housing, while easily performing a closing work of a clearance of the cutout portion.SOLUTION: In a refrigerator, a side plate of an outer box has a flange portion folded to a front face side along a front side portion, and includes first and second folded portions folded to reciprocate into the U-shape to a rear face side continuously from a tip portion of the flange portion. A side front end portion of an inner box has an inner box flange portion inserted between the first and second folded portions, and a cutout portion for drawing out a radiation pipe toward a heat insulating partition wall through an outer face of the inner box flange portion, is formed with a prescribed width in a vertical direction on a position corresponding to the heat insulating partition wall of the second folded portion. A closing member having a sponge-like member elastically closely attached to the second folded portion around the cutout portion, is disposed to close the clearance formed by the cutout portion, from an inner side.SELECTED DRAWING: Figure 1

Description

  Embodiments of the present invention relate to a refrigerator.

  In general, a household refrigerator is provided with a heat insulation box configured by filling a heat insulating material such as urethane foam between an outer box made of steel plate and an inner box made of plastic, for example. A plurality of storage chambers such as a refrigerator compartment and a freezer compartment are provided by partitioning the inside of the heat insulation box with a heat insulation partition wall. Further, a heat radiating pipe constituting a part of the refrigerant flow path of the refrigeration cycle is disposed as a dew condensation preventing pipe for preventing condensation along the left and right peripheral flange portions of the heat insulating box and the front surface portion of the heat insulating partition wall. (For example, see Patent Document 1).

JP 2009-68777 A

  By the way, in assembling the heat insulation box as described above, heat insulation pipes are arranged (temporarily fixed) in the outer box in advance, and after combining with the inner box, the space formed by them is filled with urethane foam ( The urethane stock solution is injected, foamed and cured). In this case, the heat radiating pipe is previously drawn out from the heat insulating box to the side where the heat insulating partition wall is provided.For this purpose, a notch portion is provided in the folded portion on the back surface side of the flange portion of the outer box. The heat radiating pipe is pulled out from the notch.

  At this time, in order to prevent leakage at the time of filling the urethane foam, an adhesive called melt is applied so as to close the gap between the notches, and then the urethane foam is filled. However, in order to close the notch portion of the folded portion with the melt, an operation of applying the melt to a relatively wide range has to be performed, and there are problems such as poor workability and time. In addition, it has become a cause of heat leaks.

  So, in the folded part of the outer box, there is a notch part for drawing out the heat radiating pipe outside the heat insulating box body, while it is possible to easily close the gap of the notch part, A refrigerator capable of effectively preventing heat leakage from this portion is provided.

  The refrigerator of the embodiment includes a heat insulating box configured by filling a heat insulating material between the outer box and the inner box, and includes a heat insulating partition wall that partitions the inside of the heat insulating box, A heat radiating pipe is disposed along the inner surface of the outer box, and the side plate of the outer box has a flange portion that bends to the front side along the front side portion, and the tip of the flange portion. First and second folded portions that are folded back and forth so as to reciprocate in a U-shape on the back surface side from the portion, and the first and second end portions on the side front end of the inner box An inner box flange portion inserted between the folded portions, and the heat insulating pipe is passed through the outer surface of the inner box flange portion at a position corresponding to the heat insulating partition wall in the second folded portion. A notch for drawing out toward the partition wall is formed with a predetermined width in the vertical direction. Wherein to close the gap formed by the notch from the inside, closing member is provided with a sponge-like member which is elastically close contact with the second folded portion around the notch portion.

The front view which shows 1st Embodiment and shows the arrangement | positioning state of the heat radiating pipe in a heat insulation box schematically The perspective view of the principal part which shows the drawer | drawing-out part of the heat radiating pipe of a heat insulation box Transverse plan view of the notch part of the heat insulation box The perspective view of the state (b) which attached the notch part (a) and the obstruction | occlusion member which shows the flange part front surface of an outer box facing down Cross-sectional view showing hooking state (a) and mounting state (b) of hook of closing member FIG. 4 is a perspective view of the closing member in the direction of FIG. The perspective view of the closure member which shows a 2nd embodiment. The front view of the principal part of the heat radiating pipe which shows 3rd Embodiment

(1) First Embodiment Hereinafter, a first embodiment will be described with reference to FIGS. 1 to 6. First, with reference to FIG. 1, the whole structure of the refrigerator which concerns on this embodiment is described easily. FIG. 1 shows a refrigerator main body 1 with a door removed, and the refrigerator main body 1 is divided into a plurality of heat insulating box bodies 2 in a vertically long rectangular box shape whose front surface is opened by a heat insulating partition wall. The apparatus is configured to include a plurality of storage rooms.

  Specifically, in the heat insulation box 2, a refrigerated room 3, a vegetable room 4, an ice making room 5, an upper freezer room 6, and a lower freezer room 7 are provided in order from the upper stage. Among them, the ice making room 5 and the upper freezing room 6 are provided on the left and right sides. The refrigerator compartment 3 and the vegetable compartment 4 are vertically partitioned by a first heat insulating partition wall 8, and the vegetable compartment 4, the ice making chamber 5 and the upper freezer compartment 6 are separated by a second heat insulating partition wall. 9, the ice making chamber 5, the upper freezing chamber 6, and the lower freezing chamber 7 are partitioned by a third heat insulating partition wall 10. The ice making chamber 5 and the upper freezing chamber 6 are partitioned by a vertical partition wall 11.

  Although not shown, a door for opening and closing each storage chamber is provided on the front surface of the refrigerator body 1. Among them, the door of the refrigerator compartment 3 is a hinged opening / closing type, and the doors of the vegetable compartment 4, the ice making compartment 5, the upper freezer compartment 6, and the lower freezer compartment 7 are drawer type doors with a storage container connected to the back side. ing. An automatic ice making device is provided in the ice making chamber 5. Furthermore, a cooling mechanism including a refrigeration cycle, a cold machine circulation mechanism, and the like is incorporated in the refrigerator body 1. As is well known, the refrigeration cycle is configured by connecting a compressor, a condenser, a throttling device, an evaporator, and the like in a closed loop with a refrigerant pipe.

  And among the refrigerant pipes constituting the refrigeration cycle, the high-temperature part in the downstream portion of the condenser is arranged in, for example, a meandering manner along the inner surface of the side wall of the heat insulation box 2 (the back surface of the outer box described later), It arrange | positions along the peripheral flange part of the refrigerator main body 1, or the front part of each heat insulation partition wall 8-11, and functions as the thermal radiation pipe 12 for dew condensation prevention. At this time, although not shown in detail, each of the heat insulating partition walls 8 to 11 is configured by attaching a front cover to the front surface of the partition wall body, and between the front end surface portion of the partition wall body and the back surface of the front cover. The heat radiating pipe 12 drawn out from the heat insulating box 2 is arranged together with an iron plate or the like for gasket adsorption.

  Next, the heat insulation box 2 will be described with reference to FIGS. As shown in part in FIGS. 2 and 3, the heat insulating box 2 is composed of a steel plate outer box 13 and a plastic inner box 14, for example, urethane as a heat insulating material in a space formed by them. The foam 15 is filled. 2 and 3, the inner box 14 integrally has a flange portion 16 that is bent outward at a substantially right angle on the front side of the heat insulating box 2. The flange portion 16 is inserted and coupled between a first folded portion 18 and a second folded portion 19 of the outer box 13 described below.

  2 to 5 show the right side plate portion of the outer box 13, which will be hereinafter referred to as the side plate 13. The side plate 13 has a flange portion 17 that is bent inward at substantially right angles along the front side portion and disposed on the front surface of the heat insulating box 2. At the same time, the first folded portion 18 and the second folded portion 18 are folded back and forth continuously from the front end side portion of the flange portion 17 so as to reciprocate in a U shape as viewed from above on the back surface side of the flange portion 17. A folded portion 19 is provided. The distal end portion of the second folded portion 19 is bent slightly obliquely when viewed from the top.

  As shown in FIG. 4A, a notch portion 20 for drawing out the heat radiating pipe 12 is formed in the second folded portion 19 of the side plate (outer box) 13. The notch 20 has a substantially rectangular shape that is long in the vertical direction, and is provided so as to open at the tip of the second folded portion 19 while slightly expanding. This notch portion 20 is a portion corresponding to each of the heat insulating partition walls 8 to 10, that is, a portion where the heat radiating pipe 12 is drawn leftward from the heat insulating box body 2 to the front surface side of the heat insulating partition walls 8 to 10, And the predetermined width (vertical direction length) which is located in the part which is turned back in the U shape on the left end side of the heat insulating partition walls 8 to 10 after being pulled out and returns from the right side, and allows them to pass through both. It is formed with.

  Although not shown in detail, the heat radiating pipe 12 extends in a meandering manner along the inner surface (back surface) of the side plate 13 from the machine room portion at the bottom of the refrigerator body 1, and thereafter, in FIGS. 1 and 2. As shown also, the inner surface side of the flange portion 17 (the corner portion formed by the side plate 13 and the flange portion 17) is lowered from the upper portion of the side plate 13, and bent to the left at a right angle at the first heat insulating partition wall 8 portion. And pulled out from the notch 20 through the front surface of the flange 16 of the inner box 14. The heat radiating pipe 12 is pulled out to the left to extend the front surface portion of the first heat insulating partition wall 8, and then folded back to return from the notch portion 20 to the flange portion 17.

  The heat radiating pipe 12 descends again in the flange portion 17, and is pulled back to the left in the second heat insulating partition wall 9, and then folded back, and descends the front portion of the vertical partition wall 11 in the middle. To the right and return into the flange portion 17. Further, in the third heat insulating partition wall 10 portion, it is arranged such that it is pulled back to the left and then returned and returned. At this time, the heat radiating pipe 12 is partially fixed to the back surface side of the side plate (outer box) 13 in advance by welding or brazing, and in this state, the side plate (outer box) 13 and the inner box 14 are coupled. It has become so.

  In this embodiment, as shown in FIGS. 3, 4 (b), and 5, a gap portion formed by the notch portion 20 of the second folded portion 19 is formed inside the side plate 13. A closing member 21 is provided so as to be closed from the inside. As shown in FIG. 6, the closing member 21 includes a plastic support plate 22, a sponge-like member 23 mounted on the surface side of the support plate 22 (a surface facing left in FIG. 3), and the support plate 22. The arm portion 24 is provided integrally at both ends, and the double-sided tape 25 is provided as an adhesive member provided on the back side of the support plate 22.

  Among them, the support plate 22 has a rectangular thin plate shape that is long in the vertical direction, and the size in the longitudinal direction is larger than the size in the vertical direction of the notch 20. The sponge-like member 23 is formed in a rectangular parallelepiped block shape extending from the soft synthetic resin foam in the vertical direction, and is attached to the surface of the support plate 22 by adhesion or the like. As this sponge-like member 23, a soft tape having a large thickness can be employed. As shown in FIGS. 3 and 5B, the sponge-like member 23 is elastically brought into close contact with the left side surface of the second folded portion 19 around the notch portion 20. Yes.

  The arm 24 extends forward from the right side of the upper and lower ends of the support plate 22 to the outside of both end faces of the sponge-like member 23 and further bends slightly to the left. The hook 24a is integrally formed so as to be rounded in the direction. The hooks 24 a of these arm portions are configured to be hooked on the front end side of the second folded portion 19 at the upper and lower portions of the notch portion 20. The double-sided tape 25 is provided to adhere the back surface of the support plate 22 to the inner surface of the side plate 13.

  The closing member 21 configured in this way is attached to the side plate (outer box) 13 after the heat radiating pipe 12 is attached (temporarily fixed) to the side plate (outer box) 13 before being joined to the inner box 14. Mounted. In attaching the closing member 21, first, the hooks 24 a are arranged to be hooked on the front ends of the upper and lower portions of the notch portion 20 in the second folded portion 19. At this time, as shown in FIG. 5A, in a state where the hook 24a is merely hooked on the second folded portion 19, the sponge-like member 23 is separated from the notch portion 20, and the support plate 22 The back surface is also obliquely separated from the inner surface of the side plate 13.

  Therefore, from the state of FIG. 5A, the closing member 21 is rotated in the direction of arrow A in FIG. 5B with the hooked portion of the hook 24 as a fulcrum. As a result, as shown in FIG. 5B, the sponge-like member 23 is positioned so as to close the notch 20, and the back surface of the support plate 22 is bonded to the inner surface of the side plate 13 by the double-sided tape 25. Thus, the closing member 21 is attached. After this, the outer box 13 and the inner box 14 are joined, and the urethane foam 15 is filled. As is well known, the filling of the urethane foam 15 is performed by placing an assembly of the inner box 14 and the outer box 13 in a foaming mold, injecting a urethane stock solution therein, and foaming and curing.

  Next, the operation and effect of the above configuration will be described. In assembling the heat insulating box 2 in the present embodiment, when the heat radiating pipe 12 is attached to the back surface side of the side plate (outer box) 13, a part of the heat radiating pipe 12 is the second on the back surface side of the flange portion 17. It is pulled out through a notch 20 formed in the folded portion 19. Then, by attaching the closing member 21 to the side plate 13, the sponge-like member 23 of the closing member 21 comes into elastic contact with the second folded portion 19 around the notch portion 20. The gap formed by the portion 20 is closed.

  Thereafter, the side plate (outer box) 13 and the inner box 14 are combined, and the urethane foam 15 is filled into the space formed by the inner box 14 and the outer box 13. When the urethane foam 15 is filled, the gap formed by the notch 20 is blocked by the sponge-like member 23, so that leakage of the urethane stock solution from the gap is prevented in advance. In addition, at the time of use as a refrigerator, it is possible to prevent heat leak from a gap due to the notch 20.

  At this time, unlike the conventional case where the gap formed by the notch is filled with melt application, it is only necessary to attach the closing member 21, and the assembling work is extremely simple. Therefore, according to the first embodiment, the second folded portion 19 of the outer box 13 is provided with the notch portion 20 for drawing out the heat radiating pipe 12 outside the heat insulating box body 2. While it is possible to easily close the gap of the notch 20, it is possible to obtain an excellent effect that heat leak from this portion can be effectively prevented.

  Further, in particular, in the present embodiment, the closing member 21 is provided with the sponge-like member 23 and the double-sided tape 25 on both the front and back surfaces of the support plate 22, and at the upper and lower portions of the notch portion 20 in the second folded portion 19. The arm portion 24 having the hook 24a to be hooked is integrally provided. As a result, the sponge-like member 23 can be held by the support plate 22, and the hook 24a facilitates positioning work and attachment work when the closing member 21 is attached.

  At this time, in the present embodiment, as shown in FIG. 5, in the state where the closing member 21 is hooked on the second folded portion 19, the sponge-like member 23 is separated from the notch portion 20. In this state, the sponge member 23 is positioned so as to close the notch 20 by rotating the hook 24a as a fulcrum. Thereby, after hooking the hook 24a, the closing member 21 is rotated, so that it can be easily assembled and the gap of the notch 20 can be reliably closed. Further, in the present embodiment, the closing member 21 is bonded to the inner surface of the side plate (outer box) 13 with a double-sided tape 25 provided on the back side of the support plate 22. Thereby, the closure member 21 can be attached easily.

  Further, even if the heat radiating pipe 12 is displaced from a predetermined position and is about to jump out, the blocking member 21 can be pushed into a position close to the predetermined position, so that dew prevention can be reliably performed. it can. Although not shown, the closing member 21 may be in contact with the heat radiating pipe 12 in order to hold the heat radiating pipe 12 at a predetermined position.

(2) Second and Third Embodiments and Other Embodiments FIG. 7 shows a second embodiment and shows the configuration of the closing member 31. The occlusion member 31 of the second embodiment is different from the occlusion member 21 of the first embodiment in addition to the configuration including the support plate 22, the sponge member 23, the arm portion 24, and the double-sided tape 25. The soft tape 32 is provided in the portion where the heat radiating pipe 12 is disposed.

  The soft tape 32 has a plate shape slightly thinner than the sponge-like member 23, and the back side is an adhesive surface. The soft tape 32 covers the entire lower surface side of the sponge-like member 23 in FIG. 7 of the closing member 31 and is arranged so as to be bent so as to form an L-shaped cross section on the back surface side of the support plate 22 from there. It is bonded to the member 23 and the support plate 22. Thereby, the surface side of the soft tape 32 is drawn out through the portion of the heat radiating pipe 12 that is bent through the corner portion formed by the side plate 13 and the flange portion 17, and through the cutout portion 20. It comes in close contact with the part.

  Therefore, according to the second embodiment, by adding the soft tape 32 to the closing member 31, the gap between the sponge-like member 23 of the closing member 31 and the heat radiating pipe 12 is further filled. Further, it is possible to further prevent leakage of the urethane foam 15 from the portion and prevention of heat leakage. At the same time, the soft tape 32 is elastically adhered to the heat radiating pipe 12 to protect the heat radiating pipe 12 itself or a portion where the heat radiating pipe 12 contacts.

  FIG. 8 shows the third embodiment. The difference from the first embodiment is that a portion of the heat radiating pipe 12 drawn through the notch 20 and a heat insulating box in the vicinity thereof. 2, the soft tape 41 is provided in a portion that is in contact with any one of the two. According to the third embodiment, the soft tape 41 prevents leakage of the urethane foam 15 and heat leak between the heat radiating pipe 12 and any portion of the heat insulating box 2 with which it abuts. In addition, it is possible to protect the heat radiating pipe 12 itself or any part of the heat insulating box 2 with which the heat radiating pipe 12 contacts.

  Although not shown in the drawings, as still another embodiment, a soft tape may also be provided at the portion of the inner box flange portion 16 of the inner box 14 where the heat radiating pipe 12 is disposed. . According to this, the gap between the inner box flange portion 16 and the heat radiating pipe 12 is filled with the soft tape, and it is possible to prevent urethane leakage and heat leak from the portion, and the heat radiating pipe 12 or The inner box flange portion 16 can be protected.

  Further, the closing members 21 and 31 have been described by taking a substantially rectangular parallelepiped shape with corners as an example, but urethane is in contact between the second folded portion 19 and the outer box (side plate) 13. It is only necessary to prevent the leakage, and a C surface may be formed at the corner on the side of the heat radiating pipe 12 so that it can be smoothly attached when rotating in the direction of arrow A in FIG.

  In addition, the overall configuration of the refrigerator main body 1 such as the number and arrangement of each storage room, the configuration of the heat insulating box 2 and the heat insulating partition walls 8 to 11, the overall configuration, shape, and material of the closing members 21 and 31 depart from the gist. Various modifications can be made within the range not to be performed. The several embodiments described above have been presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  In the drawings, 1 is a refrigerator body, 2 is a heat insulating box, 8 to 10 are heat insulating partition walls, 12 is a heat radiating pipe, 13 is an outer box (side plate), 14 is an inner box, 15 is urethane foam (heat insulating material), 16 Is a flange portion, 17 is a first folded portion, 19 is a second folded portion, 20 is a notched portion, 21 and 31 are closing members, 22 is a support plate, and 23 is a sponge-like member. , 24 are arm portions, 24a is a hook, 25 is a double-sided tape (adhesive member), and 32 and 41 are soft tapes.

Claims (7)

A heat insulating box is formed by filling a heat insulating material between the outer box and the inner box, and a heat insulating partition wall that partitions the inside of the heat insulating box is provided, along the inner surface of the outer box in the heat insulating box. A refrigerator having a heat radiating pipe,
The side plate of the outer box has a flange portion that bends to the front side along the front side portion, and is folded back so as to reciprocate in a U shape continuously from the front end portion of the flange portion to the back surface side. Comprising a first and a second folded portion,
At the front side end portion of the inner box, there is an inner box flange portion inserted between the first and second folded portions,
A notch portion for drawing the heat radiating pipe through the outer surface of the inner box flange portion toward the heat insulating partition wall at a position corresponding to the heat insulating partition wall in the second folded portion is predetermined in the vertical direction. Formed in width,
A refrigerator provided with a closing member having a sponge-like member that is elastically adhered to the second folded portion around the notch so as to close a gap formed by the notch from the inside. The closing member is configured to include the sponge-like member on the surface side of a plastic support plate that is longer than the cutout portion.
2. The refrigerator according to claim 1, wherein the support plate integrally has a hook hooked to an upper and lower portion of the notch portion at a front end of the second folded portion.   In the state where the hook is hooked on the second folded portion, the closing member is separated from the notch portion, and from this state, the hook portion is rotated about the hook portion. The refrigerator according to claim 2, wherein the sponge-like member is positioned so as to close the notch.   The refrigerator according to claim 2 or 3, wherein an adhesive member that is bonded to the inner surface of the side plate of the outer box is provided on the back side of the support plate.   The refrigerator according to any one of claims 1 to 4, wherein the closing member is provided with a soft tape at a portion where the heat radiating pipe is disposed.   The refrigerator according to any one of claims 1 to 5, wherein a soft tape is provided on an inner box flange portion of the inner box at a portion where the heat radiating pipe is disposed.   7. The soft tape is provided at a portion of the heat radiating pipe that is in contact with either the portion drawn through the notch or the heat insulating box in the vicinity thereof. A refrigerator according to claim 1.

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