JP6385746B2 - refrigerator - Google Patents

Description

  Embodiments of the present invention relate to refrigerators.

  The refrigerator is constituted by a cabinet filled with a foam heat insulating material between an outer box and an inner box, and forms a storage chamber inside the cabinet. In the refrigerator, in order to reduce the wall thickness of the cabinet and improve the internal volume efficiency, a vacuum heat insulation panel is provided instead of a part of the foam insulation filled between the outer box and the inner box, In recent years, in order to further reduce the wall thickness of the cabinet, the vacuum heat insulation panel may be brought into surface contact with the outer box and the inner box.

  When the vacuum heat insulation panel is brought into surface contact with the outer box and the inner box in this way, it is necessary to fix the vacuum heat insulation panel to both the outer box and the inner box with an adhesive. On the other hand, the vacuum heat insulation panel is fixed to the outer box with an adhesive, and the recess provided between the inner box and the vacuum heat insulation panel is filled with the foam heat insulating material, and the foam heat insulation filled in the recess is adhesive. It is known that the vacuum heat insulation panel is fixed to the inner box by using (see, for example, Patent Document 1 below).

JP 2014-6039 A

  However, since the injection port for injecting the raw material for the foam insulation material is provided between the outer box and the inner box on the rear side of the cabinet, the injected stock solution for the foam insulation material is used for the left and right side walls and the ceiling wall of the cabinet. After filling the interior, the back wall of the cabinet is finally filled, so a recess for filling the foam insulation is provided between the vacuum insulation panel provided on the back wall of the cabinet and the back plate of the inner box. And it is hard to be filled with the foam heat insulating material in the said recessed part, and there exists a possibility that a vacuum heat insulation panel cannot be firmly fixed to the backplate of an inner box.

  Then, in the refrigerator which provided the vacuum heat insulation panel which surface-contacts an outer box and an inner box on the back wall of a cabinet, the refrigerator which can improve the adhesiveness of the inner box by a foam heat insulating material and a vacuum heat insulation panel is provided. With the goal.

The refrigerator of the present embodiment includes a cabinet provided with a vacuum heat insulation panel and a foam heat insulating material between an inner box and an outer box, a refrigeration cycle for cooling a storage room formed inside the inner box , An inner member provided on the inner side of the inner box, and a fixture for attaching the inner member to the inner box, the vacuum insulation panel is provided on a back wall of the cabinet, and the back plate of the outer box and the It has a back vacuum insulation panel that is in surface contact with the back plate of the inner box, and is opened at the corner formed by the back wall and the left and right side walls of the cabinet between the back vacuum insulation panel and the back plate of the inner box. And a recess having a size in the vertical direction larger than that in the width direction is formed, the recess is filled with the foamed heat insulating material , and the fixture is connected to the back plate of the inner box from the storage chamber side to the recess. And is fixed to the inner box .

It is sectional drawing of the refrigerator which concerns on one Embodiment. It is AA sectional drawing of FIG. It is a figure which shows the refrigerating cycle of the refrigerator of FIG. It is a perspective view which decomposes | disassembles and shows an outer case. It is a rear view of an inner box. It is a rear view of the inner box which shows the example of a change. It is a principal part expanded sectional view of the refrigerator which concerns on the other modification.

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

  The refrigerator 1 which concerns on this embodiment is provided with the cabinet 2 opened to the front, as shown in FIG.1 and FIG.2. The cabinet 2 has a heat insulating material in a heat insulating space formed between an outer box 4 made of steel plate and an inner box 6 made of synthetic resin. A plurality of storage rooms are provided inside the cabinet 2. Specifically, as shown in FIG. 1, a refrigerating room 10 and a vegetable room 12 are provided in order from the top, and an ice making room 14 is provided below the storage room 10. Small freezer compartments (not shown) are provided side by side, and a freezer compartment 16 is provided below them. An automatic ice making device 18 is provided in the ice making chamber 14.

  The refrigerator compartment 10 and the vegetable compartment 12 are both storage compartments that are cooled to a refrigeration temperature zone (for example, 1 to 4 ° C.), and are partitioned vertically by a partition wall 20 made of synthetic resin. . The front opening of the refrigerator compartment 10 is provided with a rotating heat insulating door 10a pivotally supported by a hinge.

  A drawer-type heat insulating door 12 a is provided at the front opening of the vegetable compartment 12. An upper and lower two-stage storage case 22 constituting a storage container is connected to the back surface of the heat insulating door 12a.

  The ice making room 14, the small freezing room, and the freezing room 16 are all storage rooms that are cooled to a freezing temperature zone (for example, −10 to −20 ° C.), the vegetable room 12, the ice making room 14, and the small freezing room. The space is partitioned vertically by a heat insulating partition wall 28 provided with a heat insulating material inside. A drawer-type heat insulating door 14a is provided at the front opening of the ice making chamber 14, and an ice storage container 30 is connected to the back surface of the heat insulating door 14a. Although not shown, a drawer-type heat insulating door connected to a storage container is also provided at the front opening of the small freezer compartment. Also at the front opening of the freezer compartment 16, a drawer-type heat insulating door 16 a to which two upper and lower storage containers 32 are connected is provided.

  A refrigeration cycle 50 (see FIG. 3) for cooling each storage chamber is incorporated in the cabinet 2. Although the details will be described later, the refrigeration cycle 50 includes a refrigeration room 10 that is a storage room in a refrigeration temperature zone, a refrigeration cooler 52 for cooling the vegetable compartment 12, an ice making room 14 that is a storage room in a refrigeration temperature zone, The freezing room and the freezing cooler 54 for cooling the freezing room 16 are comprised. As shown in FIG. 1, a machine room 34 is provided on the outer side of the outer box 4 of the cabinet 2, in this example, on the lower end of the back surface of the cabinet 2. In the machine room 34, a compressor 56 and a condenser 58 (see FIG. 3) constituting the refrigeration cycle 50 and a cooling fan 57 (not shown) for cooling them are disposed.

  A refrigerated cooler room 36 and a duct 38 are formed in the back of the storage room (the refrigerated room 10 and the vegetable room 12) in the refrigerated temperature zone of the cabinet 2. The refrigeration cooler chamber 36 is provided with a refrigeration cooler 52 and a refrigeration fan 53, and the refrigeration fan 53 introduces air in the refrigeration cooler chamber 36 cooled by the refrigeration cooler 52 into the duct 38.

  The duct 38 is provided in a space sandwiched between the back plate 6 e of the inner box 6 and the duct member 39, and the cold air cooled by the refrigeration cooler 52 is removed from the refrigeration cooler chamber 36 by the rotation of the refrigeration fan 53. When it is introduced, it is blown into the refrigerator compartment 10 from the outlet 39a while flowing upward from below.

  The duct member 39 forming the duct 38 is an inner member provided inside the inner box 6, and is, for example, a substantially flat plate member formed by injection molding a synthetic resin. The duct member 39 has an upward hook-shaped attachment portion 39b provided at the upper part of the back surface, and engages with a fixture 100, which will be described later, fixed to the back plate 6e of the inner box 6. The back plate 6e is fixed at a distance from the front.

  Here, the duct member 39 that forms the duct 38 with the back plate 6e of the inner box 6 is illustrated as an inner member that is engaged with the fixture 100 and provided on the inner side of the inner box 6. In addition to the duct member 39, any member may be used as long as it is fixed to the inner box 6 and provided inside thereof, such as a partition plate for partitioning the inside of the cabinet up and down, and an eve cover that covers the front surfaces of the coolers 52 and 54.

  Further, the refrigerated cooler chamber 36 is provided with a refrigerated water receiving portion 31 that receives defrost water generated from the refrigerated cooler 52. The defrost water received by the refrigerated water receiving part 31 is drained to the evaporating dish provided in the machine room 34 via the refrigerated drain hose 33 (see FIG. 7), and receives heat generated in the machine room 34. Evaporates.

  A refrigeration cooler room 40 and a duct 44 are provided at the back of the storage room (the ice making room 14, the small freezer room, the freezer room 16) in the freezing temperature zone of the cabinet 2. A refrigeration cooler 54 and a refrigeration fan 55 are provided inside the refrigeration cooler chamber 40. The refrigeration fan 55 provided in the refrigeration cooler chamber 40 supplies the air in the refrigeration cooler chamber 40 cooled by the refrigeration cooler 54 to the ice making chamber 14, the small freezer compartment, and the freezer compartment 16 through the duct 44. Cool these storage chambers.

  The refrigeration cooler chamber 40 is provided with a refrigerated water receiver 35 that receives defrost water generated from the refrigeration cooler 54. The defrost water received by the frozen water receiving part 35 is drained to an evaporating dish provided in the machine room 34 via a frozen drainage hose 37 passing through the bottom heat insulating wall of the cabinet 2 and is generated in the machine room 34. Evaporates in response to heat.

  A control board 46 on which a microcomputer or the like for controlling the refrigerator 1 is mounted is provided on the outside of the cabinet 2, for example, on the upper rear portion of the ceiling wall 2c of the cabinet 2. Electrical components provided inside or outside the cabinet 2 such as the refrigeration fan 53, the refrigeration fan 55, the compressor 56, the cooling fan 57, and the three-way valve 70 are electrically connected to the control board 46 by lead wires 90. Based on signals input from various sensors and switches and a control program stored in the memory in advance, the operation of the refrigeration fan 53, the refrigeration fan 55, the compressor 56, the cooling fan 57, and the three-way valve 70 is controlled. The overall operation of 1 is controlled.

  Next, the configuration of the refrigeration cycle 50 will be described in detail. As shown in FIG. 3, the refrigeration cycle 50 includes, in order from the discharge side of the compressor 56 that discharges a high-temperature and high-pressure gaseous refrigerant, an evaporation pipe 60, a condenser 58, a heat radiating pipe 64, a dew-proof pipe 66, and a dryer. 68 and the inlet side of the three-way valve 70 are connected.

  A refrigeration capillary tube 72, a refrigeration cooler 52, a refrigeration accumulator 74, and a refrigeration suction pipe 76 as decompression means are sequentially connected to one outlet of the three-way valve 70 by piping. A freezing capillary tube 78, a freezing cooler 54, a freezing accumulator 80, a freezing suction pipe 82, and a check valve 84 are sequentially connected to the other outlet of the three-way valve 70 by piping. The outlet side of the check valve 84 and the outlet side of the refrigeration suction pipe 76 are connected together and connected to the suction side of the compressor 56.

  The three-way valve 70 is a switching valve that switches the flow path so that the refrigerant liquefied by the condenser 58 is alternately supplied to the refrigeration cooler 52 and the refrigeration cooler 54. The three-way valve 70 switches from the compressor 56 to the condenser 58 and the refrigeration. The state of the refrigeration cooling operation in which the low-temperature refrigerant supplied through the capillary tube 72 is supplied to the refrigeration cooler 52, and the state of the refrigeration cooling operation in which the refrigerant is supplied to the refrigeration cooler 54 without being supplied to the refrigeration cooler 52. Switch.

  In the refrigeration cycle 50, the refrigerant is compressed by the compressor 56, converted into a high-temperature and high-pressure gaseous refrigerant, and becomes a liquid refrigerant while radiating heat through the condenser 58, the heat radiating pipe 64, and the dew prevention pipe 66. . The liquid refrigerant is sent to the refrigerated capillary tube 72 or the freezing capillary tube 78 by the three-way valve 70, and is decompressed so that it can be easily vaporized in each capillary tube 72, 78, and then in the refrigerating cooler 52 or the freezing cooler 54. Cold air is generated by evaporating and taking heat away from the surroundings. The refrigerant that has taken heat from the surroundings flows to the accumulators 74 and 80, respectively. In each accumulator 74 and 80, the gas-liquid mixture refrigerant is separated into a gaseous refrigerant and a liquid refrigerant, respectively. Only the refrigerant returns to the compressor 56 through the suction pipes 76 and 82 and is compressed again to become a high-temperature and high-pressure gaseous refrigerant.

  Next, a specific configuration of the cabinet 2 will be described with reference to the drawings.

  The left side wall 2a, the right side wall 2b, the ceiling wall 2c, the bottom wall 2d, and the back wall 2e of the cabinet 2 are flat vacuum heat insulating panels 7a and 7b in a heat insulating space formed between the outer box 4 and the inner box 6. , 7c, 7d, and 7e. Further, in the heat insulation space of the cabinet 2, the heat insulation pipe 64, the dew prevention pipe 66, the refrigeration capillary tube 72, the refrigeration suction pipe 76, the refrigeration capillary tube, as well as the foam insulation material 9 such as urethane foam, are provided in the heat insulation space. 78, refrigerant pipes such as the frozen suction pipe 82, lead wires 90 for electrically connecting the electrical components provided inside or outside the cabinet 2 and the control board 46, and defrosted water generated in the coolers 52 and 54 Drain hoses 33 and 37 are provided for discharging the gas to the machine room 34.

  Specifically, the steel plate outer box 4 constituting the outer shell of the cabinet 2 has a box shape opened to the front surface having the left side plate 4a, the right side plate 4b, the top plate 4c, the bottom plate 4d and the back plate 4e. . The left side plate 4a, the right side plate 4b, and the top plate 4c are formed by bending a single long steel plate into a substantially U shape. The bottom plate 4d and the back plate 4e are members provided separately from the left side plate 4a, the right side plate 4b, and the top plate 4c. The step plate 4d-1 for forming the machine room 34 is folded on the bottom plate 4d. A song is formed.

  Further, as shown in FIG. 2, in the left side plate 4a and the right side plate 4b, flange portions 4a-1 and 4b-1 projecting inward are formed at the front end portion, and the front end portion is directed forward. The flange portions 4a-2 and 4b-2 are formed. Further, flange portions 4e-1 and 4e-2 that are inserted and engaged with the flange portions 4a-2 and 4b-2 of the left side plate 4a and the right side plate 4b are formed at the left and right ends of the back plate 4e. . In addition, as shown in FIG. 4, the injection hole 15 is provided in the center part of the right and left both sides of the back plate 4e.

  The inner box 6 made of synthetic resin is integrally formed by a vacuum molding machine, and the left side plate 6a facing the left side plate 4a, right side plate 4b, top plate 4c, bottom plate 4d and back plate 4e of the outer box 4, respectively. It has a box shape opened to the front surface having the right side plate 6b, the top plate 6c, the bottom plate 6d and the back plate 6e.

  The bottom plate 6d of the inner box 6 is formed with a step portion 6d-1 for forming the machine chamber 34 corresponding to the step portion 4d-1 of the bottom plate 4d of the outer box 4.

  A flange portion 6a-1 inserted and engaged with flange portions 4a-1 and 4b-1 of the left side plate 4a and the right side plate 4b of the outer box 4 is provided at the front end portions of the left side plate 6a and the right side plate 6b of the inner box 6. 6b-1 is formed.

  Further, as shown in FIGS. 1, 2 and 5, the corner formed by the back plate 6e of the inner box 6 and another plate connected thereto projects inward of the inner box 6 from the corner. Chamfered portions 6ae, 6be, and 6ce are formed. Specifically, a chamfered portion 6ae for connecting the left side plate 6a and the back plate 6e is provided along the vertical direction at a corner portion formed by the left side plate 6a and the back plate 6e of the inner box 6. A chamfered portion 6be that connects the right side plate 6b and the back plate 6e is provided along a vertical direction at a corner portion formed by the right side plate 6b and the back plate 6e, and the top plate 6c and the back plate 6e of the inner box 6 are provided. A chamfered portion 6ce that connects the top plate 6c and the back plate 6e is provided in the corner portion formed along the refrigerator width direction.

  Further, as shown in FIGS. 2, 4 and 5, the inner box-side recess 6e-1 that sinks to the storage chamber side (that is, the front side) is vertically located on the left and right sides of the back plate 6e of the inner box 6. A plurality are provided at intervals in the direction.

  The inner box-side recess 6e-1 has a concave groove shape that extends along the refrigerator width direction, one end of which opens into the chamfered portions 6ae and 6be and the other end terminates in the back plate 6e of the inner box 6. Between the back wall 2e and the back vacuum insulation panel 7e provided on the back wall 2e of the cabinet 2 communicated with the corner 2ae connecting the left wall 2a and the back wall 2e in the cabinet 2 and the corner 2be connecting the right wall 2b and the back wall 2e. A recess 21 is formed. The recess 21 provided between the back plate 6e of the inner box 6 and the rear vacuum heat insulation panel 7e has a dimension Lh in the vertical direction at the portion opened to the corners 2ae and 2be of the cabinet 2 so that the inner box side recess 6e- 1 is set to be larger than the dimension Lw in the width direction.

  In addition, one or a plurality of through holes 6e-2 for venting gas from the storage chamber to the recess 21 are provided at the tip of each inner box side recess 6e-1 provided on the back plate 6e of the inner box 6. It has been.

  The inner box side recess 6e-1 is provided with a fixture 100 that engages with the mounting portion 39b of the duct member 39. This fixture 100 is provided by penetrating the back plate 6 e of the inner box 6 from the refrigerator compartment 10 to the recess 21, and a portion located in the recess 21 is formed on the back plate 6 e of the inner box 6 by the foam heat insulating material 9. Fixed.

  The electrical components provided inside or outside the cabinet 2 such as the refrigeration fan 53, the freezing fan 55, the compressor 56, the cooling fan 57, and the three-way valve 70 are heat insulating spaces of the chamfered portions 6ae, 6be, and 6ce of the inner box 6. The lead wire 90 arranged along the side is electrically connected to the control board 46 provided on the rear upper surface of the ceiling wall 2 c of the cabinet 2.

  The refrigerated capillary tube 72 and the refrigerated suction pipe 76 of the refrigeration cycle 50 are integrated so as to be able to exchange heat with each other by brazing or the like to constitute a refrigerated pipe body 73.

  As shown in FIG. 5, the refrigeration pipe body 73 is provided in the inner box side recess 6e-1 of the back plate 6e from the refrigeration cooler 52 provided along the back plate 6e inside the inner box 6. It enters into the heat insulating space through the lead-out hole 6e-3, passes through the inside of the concave portion 21, and the left and right chamfered portions, in this example, the outside of the chamfered portion 6ae connecting the left side plate 6a and the back plate 6e of the inner box 6. It is pulled out to the (insulation space side). The refrigeration pipe body 73 drawn out of the chamfered portion 6ae rises along the chamfered portion 6ae, and then extends toward the chamfered portion 6be on the opposite side in the width direction (right side when viewed from the front) along the chamfered portion 6ce. Further, it is bent downward and descends along the chamfered portion 6be, and enters the machine chamber 34 through the step portion 4d-1 of the bottom plate 4d of the outer box 4.

  In the refrigeration pipe body 73 that has entered the machine chamber 34, the refrigeration capillary tube 72 is connected to one outlet of the three-way valve 70, and the refrigeration suction pipe 76 is connected to the suction side of the compressor 56.

  In FIG. 5, since the inner box 6 is viewed from the back side, the direction of the refrigerated pipe body 73 in the left-right direction is reversed. In FIG. 5, a plurality of lead wires 90 provided along the chamfered portions 6ae, 6be, 6ce of the inner box 6 are omitted.

  In addition, the refrigeration capillary tube 78 and the refrigeration suction pipe 82 of the refrigeration cycle 50 are integrated so as to be able to exchange heat with each other by brazing or the like, similarly to the refrigeration capillary tube 72 and the refrigeration suction pipe 76, thereby constituting a refrigeration pipe body 79.

  As shown in FIG. 5, the refrigeration pipe body 79 enters the heat insulation space from the refrigeration cooler 54 through the lead-out hole 6e-3 provided in the inner box side recess 6e-1 of the back plate 6e. 21, the chamfered portion opposite to the one of the left and right chamfered portions from which the refrigerated pipe body 73 is drawn out, in this example, the outside of the chamfered portion 6be connecting the right side plate 6b and the back plate 6e of the inner box 6. It is pulled out to the (insulation space side).

  The refrigeration pipe body 79 drawn to the outside of the chamfered portion 6be is bent upward, rises along the outside of the chamfered portion 6be, and is bent downward at the upper end portion of the chamfered portion 6be. At that time, at the upper end portion of the chamfered portion 6be, the refrigeration pipe body 79 is bent from the outside in the refrigerator width direction toward the inside. Thus, the refrigeration pipe body 79 provided along the outside of the chamfered portion 6be penetrates the stepped portion 4d-1 of the bottom plate 4d of the outer box 4 and enters the machine chamber 34. The refrigeration pipe body 79 that has entered the machine chamber 34 has a refrigeration capillary tube 78 connected to the other outlet of the three-way valve 70, and a refrigeration suction pipe 82 connected to the suction side of the compressor 56 via a check valve 84. .

  As shown in FIG. 5, the refrigerated drain hose 33 connected to the refrigerated water receiving portion 31 enters the heat insulating space through the lead-out hole 6e-3 provided in the inner box side recess 6e-1 of the back plate 6e. The left and right chamfered portions 6ae from which the refrigerated pipe body 73 is drawn out through the recess 21 (that is, the chamfered portions 6ae opposite to the left and right other chamfered portions 6be from which the refrigerated pipe body 79 is pulled out) to the outer surface. Pulled out. The refrigerated drainage hose 33 drawn out to the outer surface of the chamfered portion 6ae descends along the chamfered portion 6ae, and enters the machine room 34 through the stepped portion 4d-1 of the bottom plate 4d of the outer box 4.

  In the present embodiment, the lead-out hole for drawing out the refrigerated pipe body 73, the frozen pipe body 79, and the refrigerated drainage hose 33 from the inner side of the inner box 6 to the recess 21 provided between the back plate 6e and the back vacuum insulation panel 7e. 6e-3 is provided in the inner box side recess 6e-1 separately from the through hole 6e-2 for venting gas, but the refrigerated pipe body 73 and the like are drawn out from the through hole 6e-2 for venting gas and the foam heat insulating material 9 The through-hole 6e-2 may also be used for degassing during filling and derivation of the refrigerated pipe body 73 and the like.

  The heat radiating pipe 64 and the dew proof pipe 66 are embedded in the heat insulating space of the cabinet 2 so as to be in contact with the outer box 4. In this example, the heat radiating pipe 64 penetrates the stepped portion 4d-1 of the outer box 4 from the machine room 34 and enters the heat insulating space, and a back plate heat radiating pipe 64E provided on the back wall 2e of the cabinet 2, It consists of a right heat radiating pipe 64B provided on the right side wall 2b, a ceiling heat radiating pipe 64C provided on the ceiling wall 2c, and a left heat radiating pipe 64A provided on the left side wall 2a.

  As shown in FIG. 2, the back plate heat radiating pipe 64E, the right heat radiating pipe 64B, and the left heat radiating pipe 64A are recessed grooves 7e-1, 7b- provided on the outer casing 4 side of the vacuum heat insulating panels 7e, 7b, 7a. 1, 7a-1, and comes into contact with the back plate 4e, the right side plate 4b, and the left side plate 4a of the outer box 4 that covers the outside of the vacuum heat insulating panels 7e, 7b, 7a.

  As shown in FIG. 1, the ceiling heat radiating pipe 64 </ b> C is provided between the vacuum heat insulation panel 7 c provided on the ceiling wall 2 c of the cabinet 2 and the top plate 4 c of the outer box 4. It is embedded so as to come into contact with 4c.

  As shown in FIGS. 1, 2, and 4, the left radiating pipe 64A, the right radiating pipe 64B, and the back radiating pipe are formed on the inner surfaces of the left side plate 4a, the right side plate 4b, and the back plate 4e of the outer box 4. The vacuum heat insulation panels 7a, 7b, 7e are bonded with an adhesive such as a surface adhesive tape or hot melt in a state where the 64E is stored in the concave grooves 7a-1, 7b-1, 7e-1, and the top plate 4c of the outer box 4 is bonded. A ceiling heat radiating pipe 64 </ b> C is fixed to the inner surface by a metal foil tape or the like. Further, vacuum heat insulating panels 7c and 7d are bonded to the outer surfaces of the top plate 6c and the bottom plate 6d of the inner box 6 by an adhesive such as double-sided adhesive tape or hot melt.

  Then, the inner box 6 is arranged inside the left side plate 4a, the right side plate 4b, and the top plate 4c of the outer box 4, and the flanges 6a-1a and 6b-1a of the left side plate 6a and the right side plate 6b of the inner box 6 are arranged. The left side plate 4a and the right side plate 4b of the outer box 4 are inserted and engaged with the flange portions 4a-1 and 4b-1.

  Thereafter, in the heat insulating space formed between the inner box 6 and the outer box 4, a place where the vacuum heat insulating panel 7 does not exist, for example, the corners 2ae, 2be, 2ce of the cabinet 2 or the side of the ceiling wall 2c on the outer box 4 side. , A recess 21 provided between the back plate 6e of the inner box 6 and the back vacuum insulation panel 7e, etc., a heat radiating pipe 64, a dew proof pipe 66, a refrigerated capillary tube 72, a refrigerated suction pipe 76, a freezing capillary A lead wire 90 that electrically connects the refrigerant pipe such as the tube 78 and the frozen suction pipe 82 and the electrical components provided inside or outside the cabinet 2 and the control board 46 is disposed.

  Then, the bottom plate 4d of the outer box 4 is attached to the left side plate 4a and the right side plate 4b of the outer case 4, and the back plate 4e of the outer box 4 is attached to the left side plate 4a, the right side plate 4b, and the bottom plate 4d to the back plate 4e. The provided vacuum heat insulation panel 7e is brought into pressure contact with the outer surface of the back plate 6e of the inner box 6.

  Thereafter, as shown in FIG. 4, the back plate 4e of the outer box 4 is fitted in a state in which a foaming jig (not shown) is fitted in the inner box 6 with the front openings of the outer box 4 and the inner box 6 facing downward. The stock solution of the foam heat insulating material 9 made of urethane foam is injected from the injection hole 15. The stock solution of the foam heat insulating material 9 injected between the outer box 4 and the inner box 6 from the injection hole 15 is the flange portions 4a-1, 4b-1, 6a- of the front opening portions of the outer box 4 and the inner box 6. After being received at 1, 6b-1, it expands by foaming and ascends and fills the interior of the left side wall 2a, right side wall 2b, ceiling wall 2c and bottom wall 2d of the cabinet 2.

  The foam heat insulating material 9 is filled in the left side wall 2a, the right side wall 2b, the ceiling wall 2c and the bottom wall 2d of the cabinet 2, and then the corner 2ae connecting the left side wall 2a and the back wall 2e, and the right side wall 2b. And the corner 2be that connects the back wall 2e, the corner 2ce that connects the ceiling wall 2c and the back wall 2e, and the corner 2de that connects the bottom wall 2d and the back wall 2e, and each corner 2ae, 2be, 2ce and 2de are filled. The foam heat insulating material 9 filled in the corners 2ae and 2be is further provided with a back vacuum insulating panel 7e provided on the back wall 2e of the cabinet 2 and an inner box side recess 6e provided on the back plate of the inner box 6. -1 flows into the recess 21 formed between them and the foam heat insulating material 9 is also filled in the recess 21.

  In the cabinet 2 thus obtained, the vacuum heat insulating panels 7a and 7b fixed to the outer box 4 side on the left side wall 2a and the right side wall 2b are bonded and fixed to the inner box 6 by the foam heat insulating material 9, and the ceiling wall 2c. In addition, vacuum heat insulating panels 7c and 7d fixed to the inner box 6 side on the bottom wall 2d are bonded and fixed to the outer box 4 by a foam heat insulating material 9.

  Moreover, in the back wall 2e of the cabinet 2, the back surface vacuum heat insulation panel 7e fixed to the back plate 4e of the outer box 4 and the back plate 6e of the inner box 6 are in surface contact, and a foam heat insulating material is formed in the surface contact portion. However, the back vacuum insulation panel 7e is bonded and fixed to the inner box 6 by the foam insulation 9 filled in the recess 21 formed between the back plate 6e of the inner box 6 and the back vacuum insulation panel 7e. Yes.

  In the present embodiment as described above, the concave portion 21 opened in the corners 2ae and 2be of the cabinet 2 provided between the back plate 6e of the inner box 6 and the back vacuum insulation panel 7e is set to have a vertical dimension Lh. Since it can be formed larger than the width dimension Lw and a large area can be provided in the corners 2ae and 2be, the foamed heat insulating material 9 can be reliably inflow-filled into the recess 21. Therefore, the back plate 6e and the back vacuum insulation panel 7e are filled with the foam insulation 9 filled in the recess 21 without bonding the back vacuum insulation panel 7e to the back plate 6e of the inner box 6 before foam filling of the foam insulation. Can be adhesively fixed.

  In addition, in this embodiment, the refrigerant pipes such as the refrigeration pipe body 73 and the refrigeration pipe body 79, the drainage hose 33 that drains the defrost water of the refrigeration cooler 52 to the outside of the cabinet 2, the lead wire 90, and the like are provided in the recess 21. It can be arranged inside the foam insulation 9 to be filled. Therefore, for example, the refrigerant pipe, the drainage hose 33, the lead wire 90, etc. can be drawn out to the corners 2ae, 2be of the cabinet 2 through the recess 21, and the refrigerant pipe, the drainage hose, the lead wire 90, etc. It becomes easy to arrange | position in the heat insulation space of the cabinet 2. FIG.

  Furthermore, in this embodiment, the through-hole 6e-2 which penetrates the backplate 6e of the inner box 6 from the storage chamber to the recessed part 21 is provided, and when the foam heat insulating material 9 is filled, the air in the recessed part 21 is supplied. Since it can discharge | emit from the through-hole 6e-2, the accumulation of the air in the recessed part 21 can be suppressed, and the foaming heat insulating material 9 can be filled to the front-end | tip of the recessed part 21. FIG.

  In addition, in this embodiment, although the case where the inner box side recessed part 6e-1 was provided with two or more intervals at the up-down direction was demonstrated, for example, as illustrated in FIG. Inner box side recesses 6e-1 may be provided on both the left and right sides of the back plate 6e, and the recesses 21 connected in the vertical direction may be formed between the back plate 6e and the back vacuum insulation panel 7e.

  By providing the inner box side recess 6e-1 connected in the vertical direction to the back plate 6e, the area opened to the corners 2ae and 2be is increased, and the foam heat insulating material 9 is further filled into the recess 21 by inflow filling. In addition, it is possible to arrange the refrigerant pipe, drainage hose, lead wire 90 and the like in the concave portion 21 along the vertical direction, and arrange it in the heat insulation space of the cabinet 2 while avoiding interference with other piping and wiring. It becomes easy to do.

  In the present embodiment, the recess 21 is formed between the back vacuum insulation panel 7e and the back plate 6e by providing the inner box side recess 6e-1 that is recessed forward in the back plate 6e of the inner box 6. For example, as shown in FIG. 7A, a panel-side recess 7e-2 that sinks to the outer box 4 side (that is, the rear) is provided on the surface facing the back plate 6e of the back vacuum insulation panel 7e, and the panel-side recess 7e- 2 and the back plate 6e of the inner box 6 are formed, or the back plate 6e of the inner box 6 is depressed forward as shown in FIG. In addition, a panel-side recess 7e-2 that sinks backward is provided at a position facing the inner-box-side recess 6e-1 of the back vacuum insulation panel 7e, and the panel-side recess 7e-2 and the inner-box-side recess 6e-1 You may form the recessed part 21 between these.

  As mentioned above, although embodiment of this invention was described, these embodiment was shown as an example and is not intending limiting the range of invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the invention described in the claims and equivalents thereof as well as included in the scope and gist of the invention.

DESCRIPTION OF SYMBOLS 1 ... Refrigerator, 2 ... Cabinet, 4 ... Outer box, 4a ... Left side plate, 4b ... Right side plate, 4c ... Top plate, 4d ... Bottom plate, 4e ... Back plate, 6 ... Inner box, 6a ... Left side plate, 6b ... Right side Plate, 6c ... Top plate, 6d ... Bottom plate, 6e ... Back plate, 6e-1 ... Inner box side recess, 6e-2 ... Through hole, 6e-3 ... Lead-out hole, 7 ... Vacuum heat insulating material, 7e ... Backside vacuum heat insulation Panel, 9 ... Foam insulation, 10 ... Cold room, 12 ... Vegetable room, 14 ... Ice making room, 15 ... Injection hole, 16 ... Freezing room, 21 ... Recess

Claims (3)

A cabinet provided with a vacuum insulation panel and foam insulation between the inner box and the outer box, a refrigeration cycle for cooling the storage chamber formed inside the inner box, and provided inside the inner box An inner member, and a fixture for attaching the inner member to the inner box ,
The vacuum heat insulation panel is provided on the back wall of the cabinet, and has a back vacuum heat insulation panel in surface contact with the back plate of the outer box and the back plate of the inner box,
Between the back vacuum heat insulation panel and the back plate of the inner box, there is an opening at a corner formed by the back wall and the left and right side walls of the cabinet, and a vertical dimension is larger than a width dimension. Formed, and the recess is filled with the foam insulation ,
The refrigerator in which the fixing tool is fixed to the inner box through the back plate of the inner box from the storage chamber side to the recess .   The refrigerator according to claim 1, wherein a through hole is provided through the back plate of the inner box from the storage chamber side to the recess. The recessed portion is formed between a panel-side recessed portion recessed to the outer box side provided in the rear vacuum heat insulating panel and an inner box-side recessed portion recessed to the storage chamber side provided in the inner box. Item 3. The refrigerator according to Item 1 or 2 .

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