JP6863939B2 - refrigerator - Google Patents

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. The thicker the heat insulating material provided in the heat insulating space, the thicker the heat insulating material. The heat insulation performance is improved, and the power saving of the refrigerator can be achieved.

On the other hand, in refrigerators, there is a high demand for a large internal volume for the installation space, so the thickness of the heat insulating space of the refrigerator cabinet is being reduced. At that time, in order to secure sufficient heat insulating performance even if the thickness of the heat insulating space is reduced, a vacuum heat insulating material having excellent heat insulating performance is provided in the heat insulating space instead of a part or all of the foam heat insulating material such as urethane. (For example, see Patent Document 1 below).

By the way, in a 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.

These multiple lead wires connect the electric components and the control board through the heat insulating space of the cabinet, and the heat insulating space is provided with the vacuum heat insulating material and the refrigerant pipe of the refrigerating cycle incorporated in the cabinet. There is. Therefore, it is necessary to provide a plurality of lead wires in the heat insulating space of the cabinet so as not to come into contact with the vacuum heat insulating material or the refrigerant pipe. It is difficult to arrange the lead wire in the heat insulating space.

Japanese Unexamined Patent Publication No. 6-147744

Therefore, while avoiding contact with the vacuum heat insulating material and the refrigerant pipe of the refrigerating cycle, lead wires for connecting the electric components provided inside or outside the cabinet and the control board are easily arranged in the heat insulating space of the cabinet. The purpose is to provide a refrigerator that can.

The refrigerator of the present embodiment has an inner box, an outer box, a cabinet having 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. It is provided with a lead wire for electrically connecting the control board and the electric component provided in the above, and a refrigerating cycle in which the compressor, the condenser and the cooler are connected by the refrigerant pipe, and the lead wire is the heat insulating space of the inner box. Arranged along the side, the lead wire is arranged at a corner formed by the side plate and the back plate of the inner box, and the refrigerant pipe is arranged with the inner box and the vacuum heat insulating material in the heat insulating space. The lead wire and the refrigerant pipe are embedded in the foam heat insulating material outside the lead wire so as not to come into contact with each other, and the lead wire and the refrigerant pipe are placed in the front-rear direction between the vacuum heat insulating material provided on the back surface of the cabinet and the inner box. It is sandwiched and arranged so as to be sandwiched in the width direction between the vacuum heat insulating material provided on the left side wall or the right side wall of the cabinet and the inner box.

It is sectional drawing of the refrigerator which concerns on one Embodiment of this invention. It is sectional drawing of the refrigerating room which removed the heat insulating door. It is a figure which shows the refrigerating cycle of the refrigerator of FIG. It is a block diagram which shows the electric composition of the refrigerator of FIG. It is a perspective view of the inner box seen from the back direction. It is sectional drawing of the holder. It is sectional drawing of the holder which concerns on the modification. It is a rear view of the inner box which shows the arrangement of the refrigerating pipe body and the freezing pipe body with respect to the inner box. It is a perspective view which shows the installation structure of a heat dissipation pipe and a dew-proof pipe from the rear direction.

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

As shown in FIGS. 1 and 2, the refrigerator 1 according to the present embodiment includes a cabinet 2 having an opening on the front surface. The cabinet 2 is configured to have a heat insulating material in a heat insulating space 8 formed between the outer box 4 made of steel plate and the inner box 6 made of synthetic resin. A plurality of storage chambers are provided inside the cabinet 2. Specifically, as shown in FIG. 1, a refrigerating chamber 10 and a vegetable compartment 12 are provided inside the cabinet 2 in this order from the top. Below that, an ice making chamber 14 and a small freezing chamber (not shown) are provided side by side, and a freezing chamber 16 is provided below these. An automatic ice making device 18 is provided in the ice making chamber 14.

The refrigerating chamber 10 and the vegetable compartment 12 are both storage chambers that are cooled to a refrigerating temperature range (for example, 1 to 4 ° C.), and are partitioned above and below by a partition wall 20 made of synthetic resin. .. A hinge-opening / closing heat insulating door 10a is provided at the front opening of the refrigerator compartment 10. On the front surface of the heat insulating door 10a, an operation panel 13 having a display unit for displaying the temperature inside the refrigerator, a sound unit for emitting a buzzer sound or a voice, and an operation unit for adjusting the temperature inside the refrigerator, and an operation panel 13 for adjusting the temperature inside the refrigerator, and the door being opened by the user's operation. A door 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 the heat insulating door 10a is formed by projecting a pressing member (not shown) forward in response to the operation of the door opening switch 17. Press forward to open the door.

Further, in the refrigerating room 10, there is a refrigerating room temperature sensor 11 that detects the temperature inside the refrigerating room 10, a door sensor 21 that detects the opening and closing of the heat insulating door 10a, and an internal light 23 that illuminates the inside of the refrigerating room 10. It is provided.

A drawer-type heat insulating door 12a is provided at the front opening of the vegetable compartment 12. Two upper and lower storage cases 22 constituting a storage container are 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 storage rooms that are all cooled to a freezing temperature range (for example, -10 to -20 ° C.), and include a vegetable room 12, an ice making room 14, and a 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, the front opening of the small freezer is also provided with a drawer-type heat insulating door to which a storage container is connected. The front opening of the freezing chamber 16 is also provided with a drawer-type heat insulating door 16a to which the upper and lower two-stage storage containers 32 are connected.
Door sensors 24 and 25 for detecting the opening and closing of the heat insulating doors 14a and 16a are provided on the front surfaces of the ice making chamber 14, the small freezing chamber, and the freezing chamber 16. Further, on the back surface of the freezing chamber 16, a freezing chamber temperature sensor 26 for detecting the temperature inside the freezing chamber 16 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, in the freezing cycle 50, the refrigerating chamber 10 which is a storage chamber in the refrigerating temperature zone, the refrigerating cooler 52 for cooling the vegetable compartment 12, the ice making chamber 14 which is the storage chamber in the freezing temperature zone, and the small It includes a freezing chamber and a freezing cooler 54 for cooling the freezing chamber 16. As shown in FIG. 1, a machine room 34 is provided on the back side of the lower end portion 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 for cooling them (see FIG. 4), and the like are arranged.

A refrigerating cooler chamber 36 and a duct 38 are formed in the inner part of the storage chambers (refrigerating chamber 10 and vegetable compartment 12) in the refrigerating temperature zone of the cabinet 2. The refrigerating cooler room 36 is provided with a refrigerating cooler 52 and a refrigerating fan 53, and the refrigerating fan 53 allows the air in the refrigerating cooler room 36 cooled by the refrigerating cooler 52 to pass through the duct 38 to the refrigerating room. These storage chambers are cooled by supplying to 10 and the vegetable compartment 12.

Further, the refrigerating cooler room 36 is provided with a refrigerating water receiving unit 31 that receives the defrosted water generated from the refrigerating cooler 52. The defrosted water received by the refrigerated water receiving unit 31 is drained to an 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. It is designed to evaporate.

A refrigerating cooler chamber 40 and a duct 44 are provided in the inner part of the storage chamber (ice making chamber 14, small freezing chamber, freezing chamber 16) in the freezing temperature zone of the cabinet 2. The refrigerating cooler chamber 40 is provided with a refrigerating cooler 54 and a refrigerating fan 55, and the refrigerating fan 55 makes ice in the refrigerating cooler chamber 40 cooled by the refrigerating cooler 54 through a duct 44. By supplying to the chamber 14, the small freezing chamber, and the freezing chamber 16, these storage chambers are cooled.

Further, the freezing cooler chamber 40 is provided with a freezing water receiving unit 35 that receives the defrosted water generated from the freezing cooler 54. The defrosted water received by the frozen water receiving unit 35 is drained to an evaporating dish provided in the machine room 34 via a freezing drain hose 37 passing through the bottom heat insulating wall of the cabinet 2, and is generated in the machine room 34. It receives heat and evaporates.

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 rear surface of the upper surface 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, 25, an interior light 23, and a freezer compartment temperature. Electrical components provided inside or outside the cabinet 2 such as the sensor 26, the refrigerating fan 53, the refrigerating 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 are used. Based on the signal input from the switch or the switch and the control program stored in the memory in advance, the operation panel 13, the door opening device 15, the interior light 23, the refrigerating fan 53, the refrigerating fan 55, the compressor 56, the cooling fan 57, and the like. The operation of the three-way valve 70 is controlled to control the overall operation of the refrigerator 1.

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

A refrigerating capillary tube 72, a refrigerating cooler 52, a refrigerating accumulator 74, and a refrigerating 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 as decompression means are connected in order 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 refrigerating suction pipe 76 are united 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 refrigerating cooler 52 and the refrigerating cooler 54. The state of the refrigerating cooling operation in which the low-temperature refrigerant supplied via the capillary tube 72 is supplied to the refrigerating cooler 52 and the state of the refrigerating cooling operation in which the low-temperature refrigerant supplied through the capillary tube 72 is supplied to the refrigerating cooler 54 without being supplied to the refrigerating cooler 52. , Switch.

In this refrigeration cycle 50, the refrigerant is compressed by the compressor 56, changed into a high-temperature and high-pressure gaseous refrigerant, and becomes a liquid refrigerant while radiating heat through the condenser 58, the heat dissipation pipe 64, and the dew-proof pipe 66. .. The liquid refrigerant is sent to the refrigerated capillary tube 72 or the refrigerated capillary tube 78 by the three-way valve 70, is depressurized so as to be easily vaporized in each of the capillary tubes 72 and 78, and then in the refrigerated condenser 52 or the refrigerated condenser 54. Cold air is generated by vaporizing and removing heat from the surroundings. The refrigerant that has taken heat from the surroundings flows to each of the accumulators 74 and 80, and each of the accumulators 74 and 80 separates the gas-liquid mixture-like refrigerant into a gaseous refrigerant and a liquid refrigerant, respectively, and makes it gaseous. Only the refrigerant returns to the compressor 56 via the suction pipes 76 and 82 and is compressed again to become a high-temperature and high-pressure gaseous refrigerant.

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

The cabinet 2 is provided with flat vacuum heat insulating materials 7a, 7b, 7c, 7d, 7e 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, and the machine room 34. In places where there is no vacuum heat insulating material such as around the ceiling or at the corners of the cabinet 2, along with the heat insulating material 9 such as urethane foam, foamed styrol, and cardboard, the heat radiation pipe 64, the dew-proof pipe 66, the refrigerated capillary tube 72, and the refrigerated suction pipe 76 , Refrigerant pipes such as the refrigerating capillary tube 78 and the refrigerating 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 open to the front having a left side plate 4a, a right side plate 4b, a top plate 4c, a bottom plate 4d, and a back plate 4e. .. The left side plate 4a, the right side plate 4b, and the top plate 4c are formed by bending one 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, and the bottom plate 4d is folded with a stepped portion 4d-1 for forming the machine room 34. The 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 rear end portion is directed forward. 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 both left and right ends of the back plate 4e. ..

The inner box 6 made of synthetic resin is integrally molded by a vacuum forming machine, and the left side plate 4a, the right side plate 4b, the top plate 4c, the bottom plate 4d, and the left side plate 6a facing the back plate 4e, respectively, of the outer box 4 It has a box shape with an opening on the front surface having a right side plate 6b, a top plate 6c, a bottom plate 6d, and a back plate 6e.

The bottom plate 6d of the inner box 6 is formed with a step portion 6d-1 for forming the machine room 34 corresponding to the step portion 4d-1 of the bottom plate 4d of the outer box 4. On the back plate 6e of the inner box 6, a partition portion 6f forming a heat insulating partition wall 28 projects toward the front opening of the inner box 6.

At the front ends of the left side plate 6a and the right side plate 6b of the inner box 6, the flange portions 6a-1 and 4b-1 which are inserted and engaged with the flange portions 4a-1 and 4b-1 of the left side plate 4a and the right side plate 4b of the outer box 4 and 6b-1 is formed.

Further, as shown in FIGS. 1, 2, 5, and 8, the corner portion formed by the back plate 6e of the inner box 6 and another plate connected thereto is inside the inner box 6 rather than the corner portion. Chamfered portions 6ae, 6be, and 6ce protruding toward the direction are formed. Specifically, a chamfered portion 6ae connecting the left side plate 6a and the back plate 6e is provided along the vertical direction at the corner portion formed by the left side plate 6a and the back plate 6e of the inner box 6, and the inner box 6 is provided with a chamfered portion 6ae. A chamfered portion 6be connecting the right side plate 6b and the back plate 6e is provided along the vertical direction at the 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 formed. A chamfered portion 6ce connecting the top plate 6c and the back plate 6e is provided on the corner portion along the width direction of the refrigerator.

Among the electric components provided in the refrigerator 1, the electricity provided inside the cabinet 2 such as the refrigerating room temperature sensor 11, the door sensors 21, 24, 25, the freezing room temperature sensor 26, the refrigerating fan 53, and the refrigerating fan 55. The components and the electrical components provided on the outside of 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. Is 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, the plurality of lead wires 90 are divided into two on the outside of the chamfered portion 6ce (on the heat insulating space 8 side) connecting the top plate 6c and the back plate 6e, and one of them is on the right side. It is arranged along the chamfered portion 6ce with the other facing the plate 6b and the other facing the left plate 6a.

A plurality of lead wires 90 arranged along the chamfered portion 6ce toward the left side plate 6a or the right side plate 6b are provided along the chamfered portions 6ae and 6be by bending downward at the left end portion or the right end portion of the chamfered portion 6ce. Has been chamfered. A part of the plurality of lead wires 90 provided along the chamfered portions 6ae and 6be enters the inside of the inner box 6 through the introduction holes 6be-1 provided in the chamfered portions 6ae and 6be, and the refrigerating room temperature. It is connected to electrical components provided inside the cabinet 2 such as the sensor 11, and the rest penetrates the stepped portion 4d-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 components.

The plurality of lead wires 90 arranged along the chamfered portions 6ae, 6be, and 6ce are held in a aligned state by the holder 100 attached to the outside of the chamfered portions 6ae, 6be, and 6ce. ..

As shown in FIG. 6, the holder 100 has a hook-and-loop fastener 104 having a loop-shaped or coil-shaped raised portion 102 and a hook-and-loop fastener 104 having a hook portion 106 that engages with the raised portion 102 of the surface fastener 104. 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 out the hook portions 106 in parallel at intervals, and the lead wires 90 aligned with these storage portions 110 are provided. In the fitted state, 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 holder 100, the depth of the storage portion 110 is set to be 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 hook-and-loop fasteners 104 and 108. The lead wires 90 are held along the outside of the chamfered portions 6ae, 6be, and 6ce of the inner box 6 in a aligned state.

As shown in FIG. 2, the 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 holder 100 are vacuum heat insulating provided on the back wall 2e of the cabinet 2. It may be arranged so as to be sandwiched between the material 7e and the inner box 6 in the front-rear direction, and 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 heat in the refrigerator can be covered with the vacuum heat insulating materials 7a, 7b, 7e, so that the cold heat leakage to the outside can be prevented. It is possible to suppress the occurrence of dew condensation at the corners of the cabinet 2.

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 parallel to each other) has been described, but the present invention is not limited to this. , The pair of hook-and-loop fasteners 104, 108 may be composed of separate members. Further, in addition to the pair of surface fasteners 104 and 108, the holder 100 is provided with a groove-shaped storage portion 120 into which the lead wire 90 is fitted, as illustrated in FIG. 7, and is attached to the outside of the inner box 6. The lid portion 124 that sandwiches the lead wire 90 stored in the storage portion 120 between the inner box pasting portion 122 and the inner box pasting portion 122, and the lid portion 124 with respect to the inner box pasting portion 122. It may be a resin molded body provided with the locking portion 126 for fixing the above. In that case, the missing portion 128 may be provided on the surface of the ridge 127 that divides the storage portion 120 in the inner box sticking portion 122 so as to face the inner box 6.

Then, the refrigerated capillary tube 72 and the refrigerated suction pipe 76 of the refrigerating cycle 50 are integrated so as to be heat exchangeable with each other by brazing or the like to form the refrigerated pipe body 73 (see FIG. 2).

As shown in FIG. 8, the refrigerating pipe body 73 passes from a refrigerating cooler 52 provided along the back plate 6e inside the inner box 6 through a lead-out hole 6e-1 provided in the back plate 6e. It enters the heat insulating space 8 and is pulled out to one of the left and right chamfered portions, in this example, the outer surface (insulated space 8 side) of the chamfered portion 6ae connecting the left side plate 6a and the back plate 6e of the inner box 6. The refrigerated pipe body 73 pulled out to the outer surface of the chamfered portion 6ae rises along the chamfered portion 6ae and then extends along the chamfered portion 6ce toward the chamfered portion 6be on the opposite side in the width direction (right side when viewed from the front). Further, it bends downward and descends along the chamfered portion 6be, penetrates the stepped portion 4d-1 of the bottom plate 4d of the outer box 4, and enters the machine room 34. Then, in the machine room 34, the refrigerating capillary tube 72 is connected to one outlet of the three-way valve 70, and the refrigerating suction pipe 76 is connected to the suction side of the compressor 56. Since the inner box 6 is viewed from the back in FIG. 8, the orientation of the refrigerating pipe body 73 in the left-right direction is reversed.

Further, the refrigerated capillary tube 78 and the refrigerated suction pipe 82 of the refrigerating cycle 50 are also integrated so as to be heat exchangeable with each other by brazing or the like, like the refrigerated capillary tube 72 and the refrigerated suction pipe 76, to form the refrigerated pipe body 79 (FIG. 2).

The refrigerating pipe body 79 is provided on the lower surface of the partition portion 6f of the inner box 6 forming the heat insulating partition wall 28 of the cabinet 2 from the refrigerating 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 refrigerating 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 chamber in the refrigerating temperature zone (in this example, the lower side of the heat insulating partition wall 28). The refrigerated pipe body 73 is pulled out to the chamfered portion on the opposite side of the left and right chamfered portions, and in this example, to the outer surface of the chamfered portion 6be connecting the right side plate 6b and the back plate 6e of the inner box 6. The freezing pipe body 79 pulled 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 of the chamfered portion 6be, the refrigerating pipe body 79 is bent from the outside to the inside in the width direction of the refrigerator. As a result, in the freezing suction pipe 82 of the freezing pipe body 79, the upstream freezing suction pipe 82a close to the freezing cooler 54 becomes a refrigerator from the downstream freezing suction pipe 82b located on the downstream side (compressor 56 side). It is arranged on the outside in the width direction. Then, the refrigerating pipe body 79 provided along the outer surface 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 room 34.

The refrigerated suction pipe 76 included in the refrigerated pipe body 73 and the refrigerated suction pipe 82 included in the refrigerated pipe body 79 are the 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. , 7e and preferably arranged in the heat insulating space 8. By arranging the refrigerated suction pipe 76 and the frozen suction pipe 82 so as not to come into contact with 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 can be transferred to the vacuum heat insulating materials 7a and 7b. , 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 7e, and the occurrence of dew 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. It enters and is pulled out to the outer surface of one of the left and right chamfered portions 6ae from which the refrigerated pipe body 73 is pulled out (that is, the chamfered portion 6ae on the opposite side of the left and right other chamfered portion 6be from which the refrigerated pipe body 79 is pulled out). The refrigerated pipe body 73 pulled out to the outer surface of the chamfered portion 6ae descends along the chamfered portion 6ae, penetrates the stepped portion 4d-1 of the bottom plate 4d of the outer box 4, and enters the machine room 34.

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 4d-1 of the outer box 4 from the machine room 34 and enters the heat insulating space 8, and the back plate 4e of the outer box 4 The back plate heat radiating pipe 64A arranged along the right side plate 4b, the right heat radiating pipe 64B arranged along the right side plate 4b, the ceiling heat radiating pipe 64C arranged along the top plate 4c, and the left side plate 4a. It is composed of a left heat dissipation pipe 64D. The high-temperature and high-pressure refrigerant flowing out of the condenser 58 flows in the order of the back plate heat radiation pipe 64A, the right heat radiation pipe 64B, the ceiling heat radiation pipe 64C, and the left heat radiation pipe 64D, and then passes through the dew-proof pipe 66 in the machine room 34. Therefore, in the flow of air from the cooling fan 57, the air flows into the dryer 68 provided located upstream 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 housed in the recessed grooves 7e-1, 7b-1, 7a-1 provided on the outer box 4 side of the vacuum heat insulating materials 7e, 7b, 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 arranged in the heat insulating space 8 of the ceiling wall 2c and the top plate 4c of the outer box 4, and is buried in the heat insulating material 9 so as to come into contact with the top plate 4c. Has been done.

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

The dew-proof pipe 66 is arranged in the front opening of the cabinet 2 as the periphery of the door where dew condensation is likely to occur, and the heat of condensation suppresses dew condensation around the door.

As shown in FIGS. 1 and 2, the left heat radiation pipe 64D, the right heat radiation pipe 64B, and the back plate heat radiation 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 while being housed in the grooves 7a-1, 7b-1, 7e-1. The ceiling heat radiation pipe 64C is fixed with a metal foil tape or the like. Further, the vacuum heat insulating materials 7c and 7d are adhered to the outer surfaces of the top plate 6c and the bottom plate 6d of the inner box 6 with 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 flange portions 6a-1a and 6b-1a of the left side plate 6a and the right side plate 6b of the inner box 6 are formed. It is inserted and engaged with the flange portions 4a-1 and 4b-1 of the left side plate 4a and the right side plate 4b of the outer box 4.

After that, the holder 100 is attached to the chamfered portions 6ae, 6be, and 6ce of the inner box 6, and the plurality of lead wires 90 are wired in a state of being aligned by the holder 100. Then, after wiring the lead wire 90, the refrigerating pipe body 73 and the refrigerating pipe body 79 are arranged along the chamfered portions 6ae, 6be, and 6ce of the inner box 6 by 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 box 4, and further, 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 7e is pressed against the outer surface of the back plate 6e of the inner box 6.

After that, while the front openings of the outer box 4 and the inner box 6 are directed downward, the foaming jig is fitted in the inner box 6, and the injection (not shown) provided on the back plate 4e of the outer box 4 is performed. The cabinet 2 is formed by injecting a stock solution of a foam heat insulating material such as urethane foam from the holes and foaming and filling the heat insulating material 9 in the heat insulating space 8 where the vacuum heat insulating materials 7a, 7b, 7c, 7d, and 7e do not exist. Will be done.

In the refrigerator 1 of the present embodiment as described above, a plurality of electric components provided inside or outside 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 aligned state, even if the vacuum heat insulating materials 7a, 7b, 7c, 7d, and 7e are provided in a wide range of the heat insulating space 8, the vacuum heat insulating material is provided. The lead wire 90 can be easily arranged in the heat insulating space 8 of the cabinet 2 while avoiding contact with the materials 7a, 7b, 7c, 7d, 7e and the refrigerant pipe of the refrigerating cycle.

Further, since the holder 100 holds a plurality of lead wires 90 between the pair of hook-and-loop fasteners 104 and 108, the holder 100 can easily hold the lead wires 90 even if the wire diameters of the lead wires 90 are different. The holder 100 can be provided on the curved or bent surface of the inner box 6, and the lead wire 90 can be easily arranged in the heat insulating space 8.

Moreover, since a plurality of storage portions 110 into which the lead wires 90 are fitted are formed in parallel on the surface fastener 108 of the holder 100 at intervals, the surface fastener 108 is provided so that the storage portions 110 face outward. After being attached to the inner box 6, the plurality of lead wires 90 are pressed against the hook-and-loop fastener 108 provided with the storage portion 110 so that the operator can level them by hand, so that the plurality of lead wires 90 are attached to the storage portion 110. It can be loosely fitted and easily held by the holder 100 in a state where a plurality of lead wires 90 are aligned.

Further, in the refrigerator of the present embodiment, since the holder 100 is attached to the corner portion formed by the left side plate 6a and the right side plate 6b and the back plate 6e of the inner box 6, the left side wall 2a and the right side wall 2b of the cabinet 2 are attached. The 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 while ensuring the heat insulating performance, and the internal volume can be increased.

Further, in the present embodiment, chamfered portions 6ae and 6be protruding 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 to the back plate 6e. Since the holder 100 is attached to the chamfered portions 6ae and 6be, even a wide holder 100 can be easily attached to the corner of the inner box 6, and a plurality of lead wires 90 can be easily arranged. Can be done.

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, but the present invention is not limited to this, and the chamfered portions 6ae and 6be are arranged so as to partially protrude from the chamfered portions 6ae and 6be. May be.

Although the embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other embodiments, 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 scope and gist of the invention, as well as in the scope of the invention described in the claims and the equivalent scope thereof.

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, 102 ... Brushed part, 104 ... Hook-and-loop fastener, 106 ... Hook part, 108 ... Surface fastener, 110 ... Storage part

Claims (5)

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.
Lead wires that electrically connect the control board provided in the cabinet and electrical components,
A refrigeration cycle in which a compressor, condenser and cooler are connected by a refrigerant pipe,
A holder for holding the lead wire arranged along the heat insulating space side of the inner box, and
It is provided with a hole that penetrates the inner box.
The holders are provided at intervals in the vertical direction so as to sandwich the hole in the vertical direction.
The lead wire is arranged at a corner formed by the side plate and the back plate of the inner box.
The refrigerant pipe is embedded in the foam heat insulating material along the outside of the lead wire so as not to come into contact with the inner box and the vacuum heat insulating material in the heat insulating space .
The lead wire and the refrigerant pipe are sandwiched in the front-rear direction between the vacuum heat insulating material provided on the back surface of the cabinet and the inner box, and the lead wire and the refrigerant pipe are provided on the left side wall or the right side wall of the cabinet. A refrigerator arranged so as to be sandwiched in the width direction between the vacuum heat insulating material and 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 foamed heat insulating material and the inner box. A chamfered portion extending in the vertical direction is provided at a corner formed by the side plate and the back plate of the inner box.
The refrigerator according to any one of claims 1 to 3, wherein the lead wire is arranged 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 arranged on the first chamfered portion, and the lead wire is arranged.
The refrigerator according to claim 4 , wherein a duct for circulating air in the refrigerator is formed in front of the second chamfered portion and the back plate of the inner box.

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