JP2018194295A - refrigerator - Google Patents

Abstract

To provide a refrigerator in which contact between a vacuum heat insulation material and a refrigerant pipe possessed by a refrigeration cycle is avoided and lead wires connecting electrical components provided inside or outside a cabinet and a control board are simply disposed in a heat insulation space of the cabinet.SOLUTION: A refrigerator comprises: a cabinet 2 in which heat insulation materials 7 and 9 are provided in a heat insulation space 8 formed between an inner casing 6 and an outer casing 4; a control board 46 provided outside the cabinet 2; electrical components provided inside or outside the cabinet 2; lead wires 90 electrically connecting the control board 46 and the electrical components; and a holder 100 being stuck at a heat insulation space 8 side of the inner casing 6 and bundling and holding a plurality of lead wires 90.SELECTED DRAWING: Figure 2

Description

  Embodiments of the present invention relate to refrigerators.

  The refrigerator cabinet is composed of an inner box, an outer box, and a heat insulating material provided in a heat insulating space formed between the inner box and the outer box, and the thicker the heat insulating material provided in the heat insulating space, The heat insulation performance is improved and the power saving of the refrigerator can be achieved.

  On the other hand, in the refrigerator, since the demand for increasing the internal volume with respect to the installation space is also high, the thickness of the heat insulating space of the refrigerator cabinet is reduced. At that time, in order to ensure sufficient heat insulation performance even if the thickness of the heat insulation space is reduced, a vacuum heat insulation material having excellent heat insulation performance is provided in the heat insulation space in place of part or all of the foam heat insulation material such as urethane. (For example, refer to Patent Document 1 below).

  By the way, in the refrigerator, electrical components provided inside or outside the cabinet such as a lighting device, an operation display panel, a door opening / closing mechanism, and a temperature sensor are provided outside the cabinet via a plurality of lead wires. It is electrically connected to the control board.

  The plurality of lead wires connect the electrical components and the control board through the heat insulation space of the cabinet, and the heat insulation space is provided with a vacuum heat insulating material and a refrigerant pipe for a refrigeration cycle incorporated in the cabinet. Yes. Therefore, it is necessary to provide a plurality of lead wires in the heat insulating space of the cabinet so as not to contact the vacuum heat insulating material and the refrigerant pipe, but since the vacuum heat insulating material is provided in a wide range of the heat insulating space for power saving, It is difficult to arrange the lead wires in the heat insulation space.

JP-A-6-147744

  Therefore, while avoiding contact with the vacuum heat insulating material and the refrigerant pipe of the refrigeration cycle, lead wires for connecting the electrical components provided inside or outside the cabinet and the control board are simply arranged in the heat insulation space of the cabinet. An object is to provide a refrigerator that can.

  The refrigerator of the present embodiment includes an inner box, an outer box, a foam heat insulating material and a vacuum heat insulating material provided in a heat insulating space formed between the inner box and the outer box, and the cabinet, A lead wire that electrically connects a control board and an electrical component provided in the cabinet, and a refrigeration cycle in which a compressor, a condenser, and a cooler are connected by a refrigerant pipe, and the refrigerant pipe is disposed in the heat insulation space. It is embedded in the foam heat insulating material so as not to contact the inner box and the vacuum heat insulating material, and the lead wire is disposed along the heat insulating space side of the inner box.

It is sectional drawing of the refrigerator which concerns on one Embodiment of this invention. It is sectional drawing of the refrigerator compartment which removed the heat insulation door. It is a figure which shows the refrigerating cycle of the refrigerator of FIG. It is a block diagram which shows the electric constitution of the refrigerator of FIG. It is a perspective view of the inner box seen from the back direction. It is sectional drawing of a holder. It is sectional drawing of the holder which concerns on the example of a change. It is a rear view of an inner box which shows arrangement of a refrigeration pipe body and a frozen pipe body to an inner box. It is a perspective view which shows the installation structure of a heat radiating pipe and a dew prevention pipe from a back direction.

  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 includes a heat insulating material in a heat insulating space 8 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 refrigerator room 10 and a vegetable room 12 are provided in the cabinet 2 in order from the top, Below that, an ice making chamber 14 and a small freezer compartment (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. . A hinge opening / closing type heat insulating door 10 a is provided at the front opening of the refrigerator compartment 10. On the front surface of the heat insulating door 10a, there is an operation panel 13 provided with a display unit for displaying the internal temperature, a sound unit for emitting a buzzer sound and sound, and an operation unit for adjusting the internal temperature, and the door is opened by a user operation. An opening switch 17 for operating the device 15 is provided.

  As shown in FIG. 1, the door opening device 15 is provided on the upper surface of the ceiling wall of the cabinet 2, and receives the operation of the door opening switch 17 to project a pressing member (not shown) forward, thereby insulating the door 10 a. Press forward to open the door.

  In the refrigerator compartment 10, a refrigerator compartment temperature sensor 11 for detecting the inside temperature of the refrigerator compartment 10, a door sensor 21 for detecting the opening and closing of the heat insulating door 10a, and an interior lamp 23 for illuminating the inside of the refrigerator compartment 10 are provided. Is provided.

  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. 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.
Door sensors 24 and 25 that detect opening and closing of the respective heat insulating doors 14 a and 16 a are provided on the front surfaces of the ice making chamber 14, the small freezer compartment, and the freezer compartment 16. In addition, a freezer compartment temperature sensor 26 that detects the internal temperature of the freezer compartment 16 is provided on the back surface of the freezer compartment 16.

  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 back side of the lower end of the cabinet 2. In the machine room 34, a compressor 56 and a condenser 58 (see FIG. 3) constituting the refrigeration cycle 50, a cooling fan 57 (see FIG. 4) for cooling them, and the like 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 transmits the air in the refrigeration cooler chamber 36 cooled by the refrigeration cooler 52 through the duct 38. By supplying to 10 and the vegetable compartment 12, these storage compartments are cooled.

  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. 8), and receives the 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. The refrigeration cooler chamber 40 is provided with a refrigeration cooler 54 and a refrigeration fan 55. The refrigeration fan 55 converts the air in the refrigeration cooler chamber 40 cooled by the refrigeration cooler 54 into ice through the duct 44. By supplying the chamber 14, the small freezer compartment, and the freezer compartment 16, these storage rooms are cooled.

  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. As shown in FIG. 4, the control board 46 includes a refrigerator compartment temperature sensor 11, an operation panel 13, a door opening device 15, a door opening switch 17, door sensors 21, 24 and 25, an interior light 23, a freezer compartment temperature. Electrical components provided inside or outside the cabinet 2 such as the sensor 26, the refrigeration fan 53, the refrigeration fan 55, the compressor 56, the cooling fan 57, and the three-way valve 70 are electrically connected by lead wires 90, and various sensors Based on a signal input from the switch and a control program stored in advance in the memory, the operation panel 13, the door opening device 15, the interior lamp 23, the refrigeration fan 53, the refrigeration fan 55, the compressor 56, the cooling fan 57, and The operation of the refrigerator 1 is controlled by controlling the operation of the three-way valve 70.

  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.

  In the cabinet 2, flat vacuum heat insulating materials 7a, 7b, 7c, 7d, and 7e are provided in the heat insulating space 8 in the left side wall 2a, the right side wall 2b, the ceiling wall 2c, the bottom wall 2d, and the back wall 2e. In addition to the heat insulating material 9 such as urethane foam, polystyrene foam or corrugated cardboard, a heat radiating pipe 64, a dew proof pipe 66, a refrigerated capillary tube 72, and a refrigerated suction pipe 76 are provided in a place where there is no vacuum heat insulating material such as a corner of the cabinet 2 or the corner. In addition, refrigerant pipes such as the frozen capillary tube 78 and the frozen suction pipe 82, and lead wires 90 for electrically connecting the electrical components provided inside or outside the cabinet 2 and the control board 46 are provided.

  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. .

  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. On the back plate 6 e of the inner box 6, a partition part 6 f that forms the heat insulating partition wall 28 protrudes toward the front opening of the inner box 6.

  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.

  In addition, as shown in FIGS. 1, 2, 5 and 8, the corner formed by the back plate 6e of the inner box 6 and the other plates connected to the inner plate 6 has a more inner portion than the corner. Chamfered portions 6ae, 6be, 6ce projecting in the direction 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.

  Among the electrical components provided in the refrigerator 1, the electricity provided inside the cabinet 2 such as the refrigerator compartment temperature sensor 11, door sensors 21, 24, 25, the freezer compartment temperature sensor 26, the refrigerator fan 53, and the refrigerator fan 55. Electrical components provided outside the cabinet 2 such as the compressor 56, the cooling fan 57, and the three-way valve 70 are lead wires 90 arranged along the chamfered portions 6ae, 6be, and 6ce of the inner box 6. Are electrically connected to the control board 46 provided at the rear of the upper surface of the ceiling wall 2c of the cabinet 2.

  Specifically, as shown in FIG. 5, for example, the plurality of lead wires 90 are divided into two on the outer side (the heat insulating space 8 side) of the chamfered portion 6ce that connects the top plate 6c and the back plate 6e, and one of the lead wires 90 is on the right side. It is arranged along the chamfered portion 6ce with the other side facing the plate 6b and the other side facing the left side plate 6a.

  The plurality of lead wires 90 arranged along the chamfered portion 6ce toward the left side plate 6a or the right side plate 6b are bent downward at the left end portion or the right end portion of the chamfered portion 6ce and provided along the chamfered portions 6ae, 6be. It has been. The plurality of lead wires 90 provided along the chamfered portions 6ae and 6be partially enter the inside of the inner box 6 through the introduction holes 6be-1 provided in the chamfered portions 6ae and 6be, and the temperature of the refrigerator compartment. Connected to the electrical components provided inside the cabinet 2 such as the sensor 11, the remainder penetrates the stepped portion 4 d-1 of the outer box 4 and enters the machine room 34 to the outside of the cabinet 2 such as the compressor 56. It is connected to the provided electrical component.

  And the some lead wire 90 arrange | positioned along chamfering part 6ae, 6be, 6ce is hold | maintained in the state aligned with the holder 100 stuck on the outer side of chamfering part 6ae, 6be, 6ce. .

  As shown in FIG. 6, the holder 100 includes a surface fastener 104 including a loop-like or coil-like raised portion 102 and a hook-and-loop portion 106 that engages with the raised portion 102 of the surface fastener 104. 108, and either one of the pair of hook-and-loop fasteners 104 and 108 is attached to the outside of the chamfered portions 6ae, 6be, and 6ce with a double-sided adhesive tape or the like.

  In this example, the hook-and-loop fastener 108 is provided with a plurality of storage portions 110 formed by thinning the hook portions 106 in parallel at intervals, and lead wires 90 aligned with these storage portions 110 are provided. The hook portion 106 of the hook-and-loop fastener 108 is locked to the raised portion 102 of the hook-and-loop fastener 104 in the fitted state. The holder 100 is set such that the depth of the storage portion 110 is larger than the outer diameter of the lead wire 90 held by the holder 100, and the lead wire 90 is sandwiched between the pair of surface fasteners 104, 108. The lead wire 90 is held along the outer side of the chamfered portions 6ae, 6be, and 6ce of the inner box 6 in an aligned state.

  A plurality of lead wires 90 provided in a state of being aligned with the chamfered portions 6ae, 6be, and 6ce of the inner box 6 by the holding tool 100 are vacuum-insulated on the back wall 2e of the cabinet 2, as shown in FIG. It may be arranged so as to be sandwiched between the material 7e and the inner box 6 in the front-rear direction. In addition to such an arrangement, the vacuum heat insulating material 7a provided on the left side wall 2a or the right side wall 2b of the cabinet 2 is further provided. , 7b and the inner box 6 may be arranged so as to be sandwiched in the width direction. With such an arrangement, the outside of the lead wire 90 provided along the inner box 6 and easily cooled by the cold in the warehouse can be covered with the vacuum heat insulating materials 7a, 7b, 7e, so that cold heat leakage to the outside can be prevented. While being able to suppress, generation | occurrence | production of the dew condensation in the corner | angular part of the cabinet 2 can be suppressed.

  In the present embodiment, the case where the pair of hook and loop fasteners 104 and 108 constituting the holder 100 are connected in the longitudinal direction (the direction in which the storage portions 110 are arranged in parallel) has been described, but the present invention is not limited to this. The pair of surface fasteners 104 and 108 may be formed of separate members. In addition to the pair of hook-and-loop fasteners 104 and 108, the holder 100 includes a groove-shaped storage portion 120 into which the lead wire 90 is fitted, for example, as illustrated in FIG. The inner box attaching portion 122, the lid portion 124 that holds the lead wire 90 stored in the storage portion 120 between the inner box attaching portion 122, and the lid portion 124 with respect to the inner box attaching portion 122. The resin molding provided with the latching | locking part 126 which fixes can be used. In that case, a lacking portion 128 may be provided on the surface of the protrusion 127 that partitions the storage portion 120 in the inner box pasting portion 122 that faces the inner box 6.

  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 (see FIG. 2).

  As shown in FIG. 8, the refrigeration pipe body 73 passes from the refrigeration cooler 52 provided along the back plate 6e inside the inner box 6 through the lead-out hole 6e-1 provided in the back plate 6e. It enters into the heat insulation space 8 and is drawn out to the outer surface (the heat insulation space 8 side) of the chamfered portion 6ae connecting the left and right chamfered portions, in this example, the left side plate 6a and the back plate 6e of the inner box 6. The refrigerated pipe body 73 drawn to the outer surface 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 machine room 34, the refrigerated pipe body 73 has a refrigerated capillary tube 72 connected to one outlet of the three-way valve 70 and a refrigerated suction pipe 76 connected to the suction side of the compressor 56. In FIG. 8, since the inner box 6 is viewed from the back, the horizontal direction of the refrigerated pipe body 73 is reversed.

  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 forming a refrigeration pipe body 79 (FIG. 2).

  The refrigeration pipe body 79 is provided on the lower surface of the partition 6f of the inner box 6 that forms the heat insulating partition wall 28 of the cabinet 2 from the refrigeration cooler 54 provided along the back plate 6e inside the inner box 6. It enters the heat insulating partition wall 28 through the lead-out hole 6f-1.

The refrigeration pipe body 79 that has entered the heat insulating partition wall 28 from the lead-out hole 6f-1 passes through the side of the heat insulating partition wall 28 that is close to the storage room in the refrigeration temperature zone (the lower side of the heat insulating partition wall 28 in this example). 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, is pulled out to the outer surface of the chamfered portion 6be that connects the right side plate 6b and the back plate 6e of the inner box 6. The refrigeration pipe body 79 drawn out to the chamfered portion 6be is bent upward, rises along the outer surface 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. As a result, in the refrigeration suction pipe 82 of the refrigeration pipe body 79, the upstream side refrigeration suction pipe 82a close to the refrigeration cooler 54 is more refrigerator than the downstream side refrigeration suction pipe 82b located on the downstream side (compressor 56 side). It is arranged outside in the width direction. The refrigeration pipe body 79 thus provided along the outer surface of the chamfered portion 6be penetrates the step portion 4d-1 of the bottom plate 4d of the outer box 4 and enters the machine chamber 34.

  The refrigeration suction pipe 76 included in the refrigeration pipe body 73 and the refrigeration suction pipe 82 included in the refrigeration pipe body 79 are vacuum heat insulating materials 7a and 7b provided on the left side wall 2a, the right side wall 2b, and the back wall 2e of the cabinet 2. It is preferable to arrange | position in the heat insulation space 8 away from 7e. By arranging the refrigerated suction pipe 76 and the frozen suction pipe 82 so as not to contact the vacuum heat insulating materials 7a, 7b, and 7e in this way, the cold heat of the refrigerated suction pipe 76 and the frozen suction pipe 82 is reduced to the vacuum heat insulating materials 7a and 7b. , 7e, it becomes difficult to conduct to the outer box 4 in contact with the vacuum heat insulating materials 7a, 7b, 7e through the metal film layer constituting the outer skin of the outer casing 7e, and the occurrence of condensation on the surface of the outer box 4 can be suppressed.

  As shown in FIG. 8, the refrigerated drain hose 33 connected to the refrigerated water receiving portion 31 passes through the outlet hole 6e-2 provided below the outlet hole 6e-1 in the back plate 6e and enters the heat insulating space 8. The left and right chamfered portions 6ae from which the refrigerated pipe body 73 is drawn out (that is, the chamfered portions 6ae opposite to the left and right chamfered portions 6be from which the refrigerated pipe body 79 is pulled out) are drawn out. The refrigeration pipe body 73 drawn out to the outer surface of the chamfered portion 6ae descends along the chamfered portion 6ae and enters the machine chamber 34 through the stepped portion 4d-1 of the bottom plate 4d of the outer box 4.

  The heat radiating pipe 64 and the dew proof pipe 66 are embedded in the heat insulating space 8 of the cabinet 2 so as to be in contact with the outer box 4. In this example, as shown in FIGS. 2 and 9, the heat radiating pipe 64 penetrates the stepped portion 4 d-1 of the outer box 4 from the machine room 34 and enters the heat insulating space 8, and the back plate 4 e of the outer box 4. Radiating pipe 64A arranged along the right side plate 4b, right radiating pipe 64B arranged along the right side plate 4b, ceiling radiating pipe 64C arranged along the top plate 4c, and arranged along the left side plate 4a. Left heat radiating pipe 64D. The high-temperature and high-pressure refrigerant that has flowed out of the condenser 58 flows in the order of the back plate heat radiating pipe 64A, the right heat radiating pipe 64B, the ceiling heat radiating pipe 64C, and the left heat radiating pipe 64D, and then passes through the dew proof pipe 66 in the machine room 34. In the flow of the cooling fan 57, the air flows into the dryer 68 provided on the upstream side of the compressor 56.

  The back plate heat radiating pipe 64A, the right heat radiating pipe 64B, and the left heat radiating pipe 64D are stored in the recessed grooves 7e-1, 7b-1, and 7a-1 provided on the outer casing 4 side of the vacuum heat insulating materials 7e, 7b, and 7a. Then, it 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 materials 7e, 7b, and 7a. The ceiling heat radiating pipe 64C is provided between the vacuum heat insulating material 7c disposed in the heat insulating space 8 of the ceiling wall 2c and the top plate 4c of the outer box 4, and is embedded in the heat insulating material 9 so as to be in contact with the top plate 4c. Has been.

  The back plate heat radiating pipe 64A, the right heat radiating pipe 64B, and the left heat radiating pipe 64D are outside the vacuum heat insulating materials 7e, 7b, 7a in the heat insulating space 8 (on the outer box 4 side) and close to the peripheral edge thereof. May be arranged. The front end portions of the left and right side walls 2a and 2b of the cabinet 2 and the corner portions of the left and right side walls 2a and 2b and the back wall 2e are difficult to provide a vacuum heat insulating material, compared with the places covered with the vacuum heat insulating material. Although it is difficult to ensure heat insulation performance, the heat insulation performance is ensured by arranging the back plate heat radiation pipe 64A, the right heat radiation pipe 64B, and the left heat radiation pipe 64D close to the outer peripheral edge of the vacuum heat insulating material 7e, 7b, 7a. It is possible to suppress the occurrence of condensation at the front end and corner of the difficult cabinet 2.

  The dew proof pipe 66 is disposed at the front opening of the cabinet 2 as a door periphery where condensation easily occurs, and the condensation heat suppresses the dew condensation around the door.

  1 and 2, the left radiating pipe 64D, the right radiating pipe 64B, and the back radiating pipe 64A are recessed 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 insulating materials 7a, 7b, 7e are adhered to the inner surface of the top plate 4c of the outer box 4 with an adhesive such as a surface adhesive tape or hot melt in a state of being accommodated in the grooves 7a-1, 7b-1, 7e-1. The ceiling heat radiating pipe 64C is fixed with a metal foil tape or the like. Further, vacuum heat insulating materials 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 a 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, the holder 100 is affixed to the chamfered portions 6ae, 6be, and 6ce of the inner box 6, and a plurality of lead wires 90 are wired with the holder 100 being aligned. And after wiring of the lead wire 90, the refrigeration pipe body 73 and the freezing pipe body 79 are arrange | positioned along the chamfer part 6ae, 6be, 6ce of the inner box 6 using a fixing jig not shown. 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 insulating material 7 e is pressed against the outer surface of the back plate 6 e of the inner box 6.

  Thereafter, the front opening of the outer box 4 and the inner box 6 is directed downward, and a foaming jig is fitted in the inner box 6 so that an injection (not shown) provided on the back plate 4e of the outer box 4 is performed. A stock solution of foam heat insulating material such as urethane foam is injected from the hole, and the heat insulating material 9 is foamed and filled in places where the vacuum heat insulating materials 7a, 7b, 7c, 7d, and 7e are not present in the heat insulating space 8, thereby forming the cabinet 2. Is done.

  In the refrigerator 1 of this embodiment as described above, a plurality of electrical components provided on the inner side or the outer side of the cabinet 2 and the control board 46 are connected by the holder 100 attached to the heat insulating space 8 side of the inner box 6. Since the lead wires 90 can be arranged along the inner box 6 in a state where the lead wires 90 are aligned, even if the vacuum heat insulating materials 7a, 7b, 7c, 7d, 7e are provided over a wide area of the heat insulating space 8, the vacuum heat insulating The lead wire 90 can be simply arranged in the heat insulating space 8 of the cabinet 2 while avoiding contact with the refrigerant pipes of the materials 7a, 7b, 7c, 7d, 7e and the refrigeration cycle.

  In addition, since the holder 100 holds the plurality of lead wires 90 between the pair of surface fasteners 104 and 108, the holder 100 can be easily held even if the wire diameters of the lead wires 90 are different. The holder 100 can also be provided on the curved or bent surface of the inner box 6, and the lead wire 90 can be easily disposed in the heat insulating space 8.

  In addition, since the plurality of storage portions 110 into which the lead wires 90 are fitted are formed in parallel at intervals in the surface fastener 108 of the holder 100, the surface fastener 108 is arranged so that the storage portion 110 faces outward. After being affixed to the inner box 6, the plurality of lead wires 90 are pressed onto the storage unit 110 by pressing down the plurality of lead wires 90 so that the operator can level them by hand on the surface fastener 108 provided with the storage unit 110. It is possible to hold the holding tool 100 in a state where the plurality of lead wires 90 are easily aligned and loosely fitted.

  Moreover, in the refrigerator of this embodiment, since the holder 100 is affixed to the corners formed by the left side plate 6a or the right side plate 6b of the inner box 6 and the back plate 6e, the left side wall 2a and the right side wall 2b of the cabinet 2 are used. In addition, a vacuum heat insulating material can be provided over a wide range of the back wall 2e, and the thickness of the heat insulating space 8 can be suppressed and the internal volume can be increased while ensuring the heat insulating performance.

  Furthermore, in this embodiment, chamfered portions 6ae and 6be projecting inward of the inner box 6 from the corners are formed at the corners formed by the back plate 6e of the inner box 6 and other plates connected thereto. Since the holder 100 is affixed to the chamfered portions 6ae and 6be, even the wide holder 100 can be easily affixed to the corner of the inner box 6, and a plurality of lead wires 90 can be easily disposed. Can do.

  In the above-described embodiment, the case where the entire holder 100 fits in the chamfered portions 6ae and 6be has been described as an example. However, the present invention is not limited to this, and the chamfered portions 6ae and 6be are arranged so as to partially protrude. May be.

  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, 6 ... Inner box, 7 ... Vacuum heat insulating material, 8 ... Heat insulating space, 9 ... Heat insulating material, 46 ... Control board, 90 ... Lead wire, 100 ... Holder ... Brushed part, 104 ... Hook fastener, 106 ... Hook part, 108 ... Hook fastener, 110 ... Storage part

Claims (6)

A cabinet having an inner box, an outer box, and a foam heat insulating material and a vacuum heat insulating material provided in a heat insulating space formed between the inner box and the outer box;
A lead wire for electrically connecting a control board and an electrical component provided in the cabinet;
A refrigeration cycle in which a compressor, a condenser, and a cooler are connected by a refrigerant pipe, and
The refrigerant pipe is embedded in the foam heat insulating material so as not to contact the inner box and the vacuum heat insulating material in the heat insulating space,
The refrigerator in which the lead wire is disposed along the heat insulating space side of the inner box.   The refrigerator according to claim 1, wherein the vacuum heat insulating material is provided on the heat insulating space side of the outer box, and the foam heat insulating material is provided between the vacuum heat insulating material and the inner box.   The refrigerator according to claim 1 or 2, wherein the lead wire is provided between the refrigerant pipe embedded in the foam heat insulating material and the inner box.   The refrigerator according to any one of claims 1 to 3, wherein the lead wire is disposed at a corner portion formed by a side plate and a back plate of the inner box. A chamfer extending in the vertical direction is provided at the corner formed by the side plate and the back plate of the inner box,
The refrigerator according to claim 4, wherein the lead wire is disposed in the chamfered portion. The chamfered portion includes a first chamfered portion that bends inward in the width direction from the side plate of the inner box, and a second chamfered portion that bends inward in the width direction from the first chamfered portion,
The lead wire is disposed on the first chamfered portion,
The refrigerator according to claim 5, wherein a duct for circulating the air in the cabinet is formed in front of the second chamfered portion and the back plate of the inner box.

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