JP6071174B2 - refrigerator - Google Patents

Description

  Embodiments of the present invention relate to a refrigerator.

  Conventionally, in a refrigerator, a machine room is provided in the lower back portion of a cabinet in which a heat insulating space formed between an outer box and an inner box is filled with foam heat insulating material, and a refrigeration cycle for circulating a refrigerant in the machine room is configured. A compressor, a condenser, a refrigerant pipe connecting these, and the like are accommodated.

  The refrigerant pipe connected to the outlet side of the condenser prevents condensation from forming on the outer surface of the cabinet as a heat-dissipating pipe that forms part of the high-temperature refrigerant pipe through which the liquid refrigerant flows before being decompressed by the decompression device. In order to further dissipate the heat of the refrigerant or the refrigerant, it may be disposed along the heat insulating space side of the outer box (for example, Patent Document 1 below).

  The cabinet in which the heat radiating pipe is disposed on the heat insulating space side of the outer box is fixed to the outer box formed in a predetermined shape by pressing or the like, and the heat radiating pipe bent in advance in a predetermined shape is fixed with an aluminum foil tape or the like. This is formed by assembling an inner box and filling a heat insulating material into a heat insulating space formed between the outer box and the inner box.

JP 2010-38528

  However, it is difficult to bend the heat radiating pipe into a predetermined shape with a dimensional accuracy compared to the outer box, and the dimensional variation of the heat radiating pipe is large. May appear on the outer surface of the cabinet, which may damage the aesthetics of the refrigerator.

  The present invention has been made in consideration of the above circumstances, and an object of the present invention is to provide a refrigerator in which pipe marks are unlikely to appear on the outer surface of a cabinet.

The refrigerator according to the present embodiment includes a cabinet in which a heat insulating material is disposed between an inner box and an outer box, a refrigeration cycle, and a part of a high-temperature side refrigerant pipe of the refrigeration cycle. In a refrigerator comprising a heat radiating pipe disposed on the other side wall through a wall and a fixing means for fixing the heat radiating pipe to the outer box, the heat radiating pipe is attached to both ends of the ceiling wall in the width direction. A bending portion formed by bending in a plane parallel to the ceiling wall is provided, and the entire bending portion is disposed in a plane parallel to the ceiling wall and fixed to the outer box by the fixing means. It is characterized by not .

It is sectional drawing of the refrigerator which concerns on one Example of this invention. It is a figure which shows the refrigerating cycle of the refrigerator of FIG. It is a figure which shows the heat radiating pipe and vacuum heat insulating material which were arrange | positioned at the cabinet of the refrigerator of FIG. It is a top view of the cabinet of the refrigerator of FIG. It is the side view of the cabinet which abbreviate | omitted the outer case side surface of the refrigerator of FIG. It is a principal part enlarged view of FIG. It is a principal part expanded side view of the cabinet which abbreviate | omitted the outer case side of the refrigerator which concerns on a comparative example.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the refrigerator 10 according to the present embodiment includes a cabinet 16 provided with a heat insulating space between an outer box 12 made of a steel plate and an inner box 14 forming a storage space.

  The storage space formed inside the inner box 14 is partitioned into an upper refrigeration space 20 and a lower refrigeration space 40 by a heat insulating partition wall 17.

  The refrigerated space 20 is a space that is cooled to a refrigeration temperature (for example, 2 to 3 ° C.), and the interior is further divided vertically by a partition wall 21, and a plurality of mounting shelves are provided above the partition wall 21. A refrigerator compartment 22 is provided, and a vegetable compartment 24 in which a drawer-type storage container 26 is arranged below the partition wall 21 is provided.

  As shown in FIG. 1, the ceiling wall 16 c of the cabinet 16 that forms the ceiling surface of the refrigerator compartment 22 has an upper side (that is, a heat insulating space) at a position closer to the front than the central portion in the front-rear direction of the refrigerator compartment 22. A recess 30 is formed to be recessed to the side. An illuminating device 31 is housed in the recess 30, and the inside of the refrigerator compartment 22 is illuminated by a driving power supplied from a control board (not shown) of the refrigerator when the door 23 of the refrigerator compartment 22 is opened.

  A freezing space 40 disposed below the vegetable compartment 24 via the heat insulating partition wall 17 is a space cooled to a freezing temperature (for example, −18 ° C. or lower), and is small in size with an ice making room 42 equipped with an automatic ice making machine. Freezer compartments (not shown) are provided on the left and right, and a freezer compartment 46 is provided below them.

  A refrigeration cooler 52 that cools the air in the refrigeration space 20 and a refrigeration blower fan 53 that blows the cold air cooled by the refrigeration cooler 52 to the refrigeration chamber 22 and the vegetable compartment 24 are provided at the rear of the refrigeration space 20. Is provided. Further, at the rear part of the freezing space 40, a freezing cooler 54 that cools the air in the freezing space 40, and the cold air cooled by the freezing cooler 54 is sent to the ice making chamber 42, the small freezing chamber, and the freezing chamber 46. A refrigeration blower fan 55 is provided.

  The refrigeration cooler 52 and the refrigeration cooler 54 constitute a refrigeration cycle 50 together with a compressor 51 and a condenser 56 housed in a machine room 19 provided at the lower back of the cabinet 16.

  As shown in FIG. 2, the refrigeration cycle 50 includes a compressor 51 that discharges a high-temperature and high-pressure gaseous refrigerant, a condenser 56 that receives the gaseous refrigerant discharged from the compressor 51 and liquefies heat, and a condenser A switching valve 57 provided on the outlet side of the cooler 56 for switching the refrigerant flow path, a refrigerating cooler 52 and a refrigerating cooler 54, and a refrigerating decompression device 58 as a throttling means for the coolers 52 and 54. The refrigerating cooler 52 and the refrigerating cooler 54 are circulated by circulating the refrigerant discharged from the compressor 51 by connecting them with a refrigerant pipe. Cool down.

  In the refrigerator 10 having the above configuration, the cabinet 16 includes the outer box 12 and the inner box 14 by the foam heat insulating material 13 in a state where the heat radiating pipes 61 and 62 and the vacuum heat insulating materials 11 and 15 are disposed on the heat insulating space side of the outer box 12. And are integrated.

  Specifically, the heat radiating pipes 61 and 62 are refrigerant pipes connecting the outlet side of the condenser 56 and the inlet of the switching valve 57, and the high temperature side through which the liquid refrigerant before being decompressed by the decompression devices 58 and 59 circulates. It constitutes a part of the refrigerant pipe.

  The heat radiating pipe 61 is connected to the outlet side of the condenser 56, and enters the foaming space of the cabinet 16 through the outer box bottom plate 12 a forming the ceiling surface of the machine room 19 as shown in FIG. 3. The heat radiating pipe 61 that has entered the cabinet 16 is provided in a substantially annular shape along one of the side walls 16a of the cabinet 16 along its peripheral edge, and the end of the heat radiating pipe 61 penetrates the outer box bottom plate 12a again. It returns to the machine room 19 and is connected to the heat radiating pipe 62.

  The heat radiating pipe 62 penetrates the outer box bottom plate 12a from one of the left and right sides of the machine room 19 and enters the one side wall 16a of the cabinet 16, and extends upward at the rear end of the one side wall 16a. The switching provided in the machine room 19 is arranged so as to extend downward through the ceiling wall 16c of the cabinet 16 and return to the other side part of the machine room 19 extending downward. It is connected to the inlet of the valve 57.

  Of the heat radiating pipes 62 disposed on the side walls 16a and 16b of the cabinet 16, the portion 62a located outside the storage space, that is, the side surface heat radiating pipe 62a disposed on the side walls 16a and 16b that divides the storage space, The rear ends of the side walls 16a and 16b have a linear shape extending in the vertical direction toward the heat insulating space of the outer box 12. The upper end portions of the side surface heat radiating pipes 62 a disposed in the side walls 16 a and 16 b are bent forward and enter the ceiling wall 16 c of the cabinet 16.

  As shown in FIG. 4, the heat radiating pipe 62 disposed in the ceiling wall 16 c of the cabinet 16 includes bent portions 62 c at both ends in the width direction of the ceiling wall 16 c.

  The bending part 62c extends forward from the rear part of the ceiling wall 16c and is folded back to the vicinity of the center part in the front-rear direction, and has a folded shape protruding forward from the rear part of the ceiling wall 16c. The bent portion 62c having such a shape is provided so as to be elastically deformable in the width direction by elastically deforming so that a pair of side portions 62c-1 extending in the front-rear direction and facing each other in the width direction are close to each other. . The bent portions 62c provided at both ends in the width direction of the ceiling wall 16c are connected to the rear end portion of the ceiling wall 16c by ceiling heat radiating pipes 62b arranged linearly along the heat insulating space side of the outer box 12. Yes.

  Moreover, the vacuum heat insulating materials 11 and 15 are formed by sealing a core material made of cotton-like glass fiber in a vacuum state into a gas barrier container made of a laminated film containing an aluminum foil in a vacuum state. 11 is provided on the ceiling wall 16 c of the cabinet 16, and the vacuum heat insulating material 15 is provided on the left and right side walls 16 a and 16 b of the cabinet 16.

  The vacuum heat insulating material 11 provided on the ceiling wall 16c of the cabinet 16 is provided between the concave portion 30 provided on the ceiling wall 16c and the ceiling heat radiating pipe 62b in the front-rear direction, and provided in the heat radiating pipe 62 in the width direction. Between the bent portions 62c. That is, the vacuum heat insulating material 11 is disposed so as to avoid the upper position of the recess 30 provided in the ceiling wall 16c and avoid the bending portion 62c and the ceiling heat radiating pipe 62b.

  The vacuum heat insulating material 15 provided on one of the left and right side walls 16a and 16b of the cabinet 16 where the heat radiating pipe 61 is disposed is provided on the surface facing the outer box 12 as shown in FIG. A pair of concave grooves 15a which are depressed larger than the outer dimensions of 61 and extend in the vertical direction are provided. The vacuum heat insulating material 15 provided with the concave groove 15a is fixed to the outer box 12 so that the heat radiating pipe 61 is sandwiched between the outer casing 12 in the concave groove 15a.

  In order to manufacture such a cabinet 16, first, the heat radiating pipes 61 and 62, which are bent into a predetermined shape, are fixed to the heat insulating space side of the outer box 12 in which a steel plate is formed into a predetermined shape by pressing or the like. The heat radiating pipes 61 and 62 are fixed by fixing means 64 such as an aluminum foil tape or a good heat conductive hot melt adhesive so that the heat of the heat radiating pipes 61 and 62 is conducted well to the outer box 12.

  Specifically, the heat radiating pipe 62 disposed from one side wall 16a of the cabinet 16 to the other side wall 16b through the ceiling wall 16c is fixed to the side surface heat radiating pipe 62a and the ceiling heat radiating pipe 62b other than the bent portion 62c. 64, and the bending part 62c is not fixed with respect to the outer case 12, but can move freely.

  Next, the vacuum heat insulating materials 11 and 15 are fixed to the ceiling surface of the outer box 12 to which the heat radiating pipes 61 and 62 are fixed and the heat insulating space sides of the left and right side surfaces.

  Then, the outer box 12 in which the heat radiating pipes 61 and 62 and the vacuum heat insulating materials 11 and 15 are fixed to the foaming space side and the inner box 14 are assembled to form a heat insulating space between the outer box 12 and the inner box 14. Then, a stock solution of foam heat insulating material made of polyurethane home is poured into this heat insulating space. Thereby, the cabinet 16 in which the outer box 12 and the inner box 14 are integrated by the foam heat insulating material 13 in a state where the heat radiating pipes 61 and 62 and the vacuum heat insulating materials 11 and 15 are arranged on the heat insulating space side of the outer box 12. Is formed.

  As described above, in the refrigerator 10 of the present embodiment, the heat radiating pipes 62 disposed on the other side wall 16b from the one side wall 16a of the cabinet 16 through the ceiling wall 16c are wide at both ends in the width direction of the ceiling wall 16c. A bending portion 62c provided to be deformable in the direction is provided. Therefore, even if there is a variation in dimensions of the heat radiating pipe 62 bent into a predetermined shape, a dimensional error caused by bending can be absorbed by the bending portion 62c being bent and deformed in the width direction. Even if it fixes to, the swell (pipe trace) of the outer box 12 becomes difficult to appear on the outer surface of the cabinet 16, and the beauty of the refrigerator 10 is not spoiled.

  Moreover, in the refrigerator 10 of this embodiment, since the bending part 62c which made | formed the folding shape which protrudes ahead from the rear part of the ceiling wall 16c is arrange | positioned in the width direction both ends of the ceiling wall 16c, in the cabinet 16, It is possible to arrange the bent portion 62c having a temperature higher than the inside temperature in a position where the thickness of the heat insulating wall is large, and the heat of the bent portion 62c is difficult to leak to the inside of the warehouse, thereby improving the heat insulating performance of the cabinet 16. Can be made.

  Moreover, in the refrigerator 10 of the present embodiment, the vacuum heat insulating material 11 is disposed between the bent portions 62c provided at both ends in the width direction of the ceiling wall 16c, so that the portion of the ceiling wall 16c that faces the storage space The vacuum heat insulating material 11 can be disposed in a wide range, and the heat insulating performance of the cabinet 16 can be improved.

  Moreover, in the refrigerator 10 of this embodiment, the side surface radiation | emission pipe 62a provided in the side walls 16a and 16b of the cabinet 16 extends along the up-down direction at the rear end part of the side walls 16a and 16b in the heat insulation space side of the outer box 12. Since it has a linear shape, the vacuum heat insulating material 15 can be disposed over a wide range of the side walls 16a and 16b of the cabinet 16, and the heat insulating performance of the cabinet 16 can be improved. That is, as shown in FIG. 7, when the folded portion 65 protruding forward from the rear portion of the side wall 16a of the cabinet 16 is provided on the side surface heat radiating pipe 62a, the folded portions 65 are avoided and the side walls 16a and 16b are vacuumed. Although the heat insulating material 15 must be provided, in this embodiment, since the side surface heat radiating pipe 62a has a linear shape, the vacuum heat insulating material 15 can be disposed over a wide range of the side walls 16a and 16b of the cabinet 16. .

  Specifically, in the case where the folded portion 65 is provided on the side surface heat radiating pipe 62a as shown in FIG. 7, it is necessary to secure the bending radius of the pipe, so that the vertical dimension of the folded portion 65 is increased to some extent. The distance A from the upper end of the vacuum heat insulating material 15 to the upper end side 61a of the heat radiating pipe 61 disposed on the side wall 16a should be smaller than the distance B from the upper end side 61a to the outer box top plate 12b. Although difficult, in the present embodiment as shown in FIG. 6, the distance A from the upper end of the vacuum heat insulating material 15 disposed on the side walls 16a and 16b to the upper end side 61a of the heat radiating pipe 61 disposed on the side wall 16a. Can be made smaller than the distance B from the upper end side 61a to the outer box top plate 12b, and the vacuum heat insulating material 15 can be disposed in a wide range.

  Moreover, the above-described embodiment is presented as an example, and is not intended to limit the scope of the invention. These 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 are included in the scope and gist of the invention, and are also included in the invention described in the scope of claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 10 ... Refrigerator 11 ... Vacuum heat insulating material 12 ... Outer box 12a ... Outer box bottom plate 12b ... Outer box top plate 13 ... Foam heat insulating material 14 ... Inner box 15 ... Vacuum heat insulating material 15a ... Groove 16 ... Cabinet 16a, 16b ... Side wall 16c ... ceiling wall 17 ... heat insulating partition wall 19 ... machine room 20 ... refrigerated space 21 ... partition wall 22 ... refrigerated room 23 ... door 24 ... vegetable room 26 ... storage container 30 ... recess 31 ... lighting device 40 ... frozen space 42 ... ice making room 46 ... Freezing room 50 ... Refrigeration cycle 51 ... Compressor 52 ... Refrigeration cooler 53 ... Refrigeration blower fan 54 ... Refrigeration cooler 55 ... Refrigeration blower fan 56 ... Condenser 57 ... Switching valve 58 ... Refrigeration decompression device 59 ... Refrigerating decompression device 60 ... Check valve 61 ... Radiation pipe 62 ... Radiation pipe 62a ... Side surface radiation pipe 62b ... Ceiling radiation pipe 62c ... Bending part 64 ... Fixing means 65 ... Folding part

Claims (4)

A cabinet in which a heat insulating material is disposed between the inner box and the outer box, a refrigeration cycle, and a part of the high-temperature side refrigerant pipe of the refrigeration cycle, and the other side wall from one side wall of the cabinet through the ceiling wall In a refrigerator provided with a heat dissipating pipe disposed in and a fixing means for fixing the heat dissipating pipe to the outer box ,
Provided with a said radiating pipe is both widthwise end bending part formed by bending in a plane parallel to the top wall of the cabinet to the portion of the ceiling wall, entire deflection unit is disposed in a plane parallel to the top wall And a refrigerator that is not fixed to the outer box by the fixing means .   2. The refrigerator according to claim 1, wherein a portion of the heat radiating pipe disposed on the side wall and located outside the storage space has a linear shape extending in a vertical direction.   The refrigerator according to claim 1 or 2, wherein the bent portion has a folded shape protruding forward from a rear portion of the ceiling wall.   The refrigerator according to any one of claims 1 to 3, wherein a vacuum heat insulating material is disposed between the bent portions disposed at both ends in the width direction in the ceiling wall. .

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