JP2018169154A - refrigerator - Google Patents

Abstract

To provide a refrigerator in which a suction pipe can be provided in a heat insulating space of a cabinet while a decrease in the inner volume of the cabinet is restrained.SOLUTION: A refrigerator comprises: a cabinet 2 in which a cooler chamber 40 is formed inside an inner box 6, and a machine chamber 34 is formed outside an outer box 4; a cooler 54 provided in the cooler chamber 40; a compressor 56 provided in the machine chamber 34; and a suction pipe 82 for returning a refrigerant flowing from the cooler 54, to the compressor 56. The suction pipe 82 goes into a heat insulating space 8 formed between the inner box 6 and the outer box 4, from a ceiling wall 28 or a side wall for partitioning the cooler chamber 40, passes through the heat insulating space 8, and is connected to the compressor 56.SELECTED DRAWING: Figure 7

Description

  Embodiments of the present invention relate to refrigerators.

  Conventionally, a refrigeration cycle incorporated in a refrigerator cabinet is configured such that the refrigerant compressed by the compressor sequentially flows through the condenser, capillary tube, cooler, and suction pipe and then returns to the compressor.

  In such a refrigeration cycle, the suction pipe connecting the cooler and the compressor raises the temperature of the refrigerant flowing out of the cooler appropriately and then returns the refrigerant to the compressor. In the back wall of the cabinet that divides the back of the chamber, it is arranged by being folded back to ensure the length necessary for the temperature rise of the refrigerant (for example, see Patent Document 1).

  By the way, in the refrigerator, since the request | requirement of the enlargement of the internal volume with respect to installation space is also high, reducing the thickness of the heat insulation space of the cabinet of a refrigerator is performed. At that time, in order to sufficiently secure the heat insulating performance even if the thickness of the heat insulating space is reduced, a vacuum heat insulating material that is superior in heat insulating performance to a foamed heat insulating material such as urethane is provided in a wide area of the heat insulating space.

JP 2002-71262 A

  However, if pipes that constitute a part of the refrigeration cycle, such as a suction pipe, are installed inside the back wall of the cabinet as described above, the thickness of the foam insulation is adjusted so that the pipe is completely embedded in the foam insulation. It must be secured, and the back wall of the cabinet becomes thick, and there is a limit to increasing the internal volume.

  Then, it aims at providing the refrigerator which can provide a suction pipe in the heat insulation space of a cabinet, suppressing the fall of the internal volume of a cabinet.

  The refrigerator of this embodiment has 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 a cooler chamber is provided inside the inner box. A cabinet having a machine room formed outside the outer box, a cooler provided in the cooler room, a compressor provided in the machine room, and a refrigerant flowing out of the cooler is compressed. A refrigeration cycle incorporated into the cabinet, and the suction pipe enters the heat insulation space from a ceiling wall or a side wall defining the cooler chamber and passes through the heat insulation space. Connected to the compressor.

It is sectional drawing of the refrigerator which concerns on 1st 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 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 of a heat insulation fixture. It is a perspective view which shows the installation structure of a heat radiating pipe and a dew prevention pipe from a back direction. It is sectional drawing of the refrigerator which concerns on 2nd Embodiment of this invention. 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 in a refrigerator concerning a 2nd embodiment.

(First embodiment)
Hereinafter, a first 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 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. . 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 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.
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 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, 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. 7), and receives heat generated in the machine room 34. Evaporates.

  A refrigeration cooler room 40 and a duct 44 are provided in the interior of the cabinet 2 at the back of the freezing temperature zone storage room (the ice making room 14, the small freezing room, the freezing room 16). The refrigeration cooler chamber 40 is partitioned by a heat insulating partition wall 28 at the upper side, partitioned by the back wall 2e of the cabinet 2 and divided by the left and right side walls 2a and 2b of the cabinet 2, and the front is covered. It is a space partitioned by a body 59, and a refrigeration cooler 54 and a refrigeration fan 55 are provided therein. 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. 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 refrigerator, etc. Refrigerant pipes such as the capillary tube 72, the refrigerated suction pipe 76, the frozen capillary tube 78, and the frozen suction pipe 82, and lead wires 90 that electrically connect the electrical components provided inside or outside the cabinet 2 and the control board 46 are provided. It has been.

  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. As shown in FIG. 5, the partition portion 6f opens to the left side plate 6a, the right side plate 6b, the back plate 6e, and the chamfered portions 6ae and 6be, which will be described later, and the inner box 6 and the inner box 6 through the opening. The heat insulating space 8 formed between the box 6 and the heat insulating partition wall 28 communicate with each other.

  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 7, 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.

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

  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.

  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. 7, 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 insulating space 8 and is pulled out to the outside of the chamfered portion 6ae connecting the left side plate 6a and the back plate 6e of the inner box 6 (in the side of the heat insulating space 8). 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. 7, since the inner box 6 is viewed from the back, the horizontal direction of the refrigerated pipe body 73 is reversed. Further, in FIG. 7, the plurality of lead wires 90 and the holder 100 provided along the chamfered portions 6 ae, 6 be, 6 ce 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. The refrigeration pipe body 79 enters the heat insulation space 8 through the heat insulation partition wall 28 that partitions the upper part of the refrigeration cooler chamber 40.

  That is, the refrigeration pipe body 79 is provided on the lower surface of the partition portion 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 outlet hole 6f-1 is closer to the refrigeration temperature zone storage chamber than the refrigeration temperature zone storage chamber 28 (in this example, the heat insulation partition wall 28). The chamfered portion on the opposite side to the left and right chamfered portions from which the refrigerated pipe body 73 is drawn out, in this example, the chamfered portion that connects the right side plate 6b and the backplate 6e of the inner box 6 It is pulled out to the outside of 6be (the heat insulating space 8 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, on the outside of the chamfered portion 6be, the upstream side refrigeration suction pipe 82a adjacent to the refrigeration cooler 54 is located outside the downstream side refrigeration suction pipe 82b located on the downstream side (compressor 56 side) in the refrigerator width direction. The upstream side frozen suction pipe 82a and the downstream side frozen suction pipe 82b run in parallel in the vertical direction.

  The refrigeration pipe body 79 thus provided along the outside 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. In the refrigeration pipe body 79 that has entered the machine chamber 34, the refrigeration capillary tube 78 is connected to the other outlet of the three-way valve 70, and the refrigeration suction pipe 78 is connected to the suction side of the compressor 56 via the check valve 84. .

  As shown in FIG. 7, the refrigerated drain hose 33 connected to the refrigerated water receiving portion 31 passes through the outlet hole 6 e-2 provided below the outlet hole 6 e-1 in the back plate 6 e 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 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 this embodiment, the refrigeration pipe body 73 and the refrigeration pipe body 79 provided along the outer sides of the chamfered portions 6ae, 6be, 6ce of the inner box 6 are fixed to the outer sides of the chamfered portions 6ae, 6be of the inner box 6. The heat insulating fixtures 130, 140 formed by molding a heat insulating material such as expanded polystyrene into a predetermined shape are provided in the heat insulating space 8 at predetermined intervals from the chamfered portions 6ae, 6be, 6ce (FIG. 2, FIG. 7, FIG. 8).

  Specifically, the heat insulation fixture 130 provided above the partition 6f of the inner box 6 is disposed facing the heat insulating space 8 side of the chamfers 6ae and 6be of the inner box 6, as shown in FIG. The base part 132 and the extension part 134 extended from the base part 132 along the heat insulation space 8 side of the right-and-left side plates 6a and 6b are provided. The heat insulating fixture 130 is fixed to the inner box 6 with an adhesive on a double-sided adhesive tape or the like provided on the base 132 and the extension 134, and the refrigeration pipe body 73 and the freezing pipe are provided by a groove 136 provided on the outside of the base 132. Hold the body 79. At this time, the refrigerated pipe body 73 and the refrigerated pipe body 79 arranged in parallel with each other may be held by the heat insulating fixture 130 after the pipe bodies are fixed to each other using the injection parts. Thereby, since the pipe bodies 73 and 79 can be handled integrally and arrange | positioned in an appropriate position, manufacturability can be improved.

  In addition, as shown in FIG. 8, the heat insulating fixture 140 provided in the partition portion 6 f of the inner box 6 includes a base portion 142 that faces the outside of the chamfered portion 6 be of the inner box 6, and an inner portion from the base portion 142. An insertion portion 144 that protrudes toward the box 6 is provided, and the insertion portion 144 is fixed to the inner box 6 by being inserted into the partition portion 6f through an opening that opens into the chamfered portion 6be. A curved groove 146 and a straight groove 148 are provided on the heat insulating space 8 side of the base 142. In this heat insulating fixture 140, a portion that is drawn out of the chamfered portion 6 be through the heat insulating partition wall 28 through the heat insulating partition wall 146 and bent upward is stored in the refrigeration pipe body 79, and the downstream side freezing is stored in the straight groove 148. A refrigerated pipe body 79 having a suction pipe 82b and a refrigerated pipe body 73 are accommodated.

  Thus, by providing the refrigeration pipe body 73 and the refrigeration pipe body 79 in the heat insulation space 8 apart from the inner box 6 by the heat insulation fixtures 130 and 140 made of a heat insulating material, the refrigeration suction pipe 76 included in the refrigeration pipe body 73, The cold heat of the frozen suction pipe 82 included in the frozen pipe body 79 is less likely to be transmitted to the inner box 6, and it is possible to suppress the occurrence of dew condensation inside the inner box 6.

  When the refrigeration pipe body 73 and the refrigeration pipe body 79 are provided in the heat insulating space 8 at predetermined intervals from the chamfered portions 6ae, 6be, and 6ce as described above, the refrigeration suction pipe 76 included in the refrigeration pipe body 73, The frozen suction pipe 82 included in the pipe body 79 is not in contact with the vacuum heat insulating materials 7a, 7b, and 7e provided on the left side wall 2a, the right side wall 2b, and the back wall 2e of the cabinet 2, and is separated from the heat insulating space 8 at a predetermined interval. It is preferable to arrange in. 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.

  In the present embodiment, the refrigeration pipe body 73 and the refrigeration pipe body 79 are held by the heat insulation fixtures 130 and 140. In addition, the lead wire 90 and the refrigeration drain hose 33 provided in the heat insulation space 8 are held. You may let them. At that time, the lead wire 90 and the refrigerated drain hose 33 are held by the heat insulating fixtures 130 and 140 so as to be closer to the refrigeration pipe body 79 having the downstream side refrigeration suction pipe 82b than the refrigeration pipe body 79 having the upstream side refrigeration suction pipe 82a. It is preferable to make it. As a result, the lead wire 90 and the refrigerated drain hose 33 are not easily affected by the cold of the upstream side refrigeration suction pipe 82a through which a relatively low temperature refrigerant flows from the refrigeration cooler 54, and the lead wire 90 is cooled. By doing so, it is possible to suppress the occurrence of dew condensation occurring in the inner box 6 or to prevent the defrost water flowing through the refrigerated drainage hose 33 from freezing.

  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 come into 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 of the outer box 4. 4e along the back plate radiating pipe 64A, the right radiating pipe 64B arranged along the right side plate 4b, the ceiling radiating pipe 64C arranged along the top plate 4c, and the left side plate 4a. The left heat radiating pipe 64D is arranged. 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. Into the dryer 68.

  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 the heat insulation performance, the heat insulation performance is secured 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, while arrange | positioning the refrigeration pipe body 73 and the frozen pipe body 79 on the outer side of the chamfer part 6ae, 6be, 6ce of the inner box 6 using the heat insulation fixtures 130, 140, The refrigeration pipe body 73 is inserted from the heat insulating space 8 side of the inner box 6 into the refrigeration cooler chamber 36 inside the refrigerator through the outlet hole 6e-1 provided in the back plate 6e of the inner box 6, and the refrigeration pipe body 79 is inserted into the inner box. After being aligned along the lower surface of the six partition portions 6f, it is inserted into the refrigeration cooler chamber 40 inside the warehouse through the lead-out hole 6f-1.

  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 present embodiment, the refrigeration suction pipe 82 is piped so as to enter the heat insulation space 8 from the refrigeration cooler 54 through the inside of the heat insulation partition wall 28 that partitions the upper part of the cooler chamber 40. The frozen suction pipe 82 can be piped to the corner of the heat insulating space 8 formed by the left and right side walls 2a, 2b and the back wall 2e without passing through the inside of the second back wall 2e. Therefore, the vacuum heat insulating material 7e can be provided over a wide range of the back wall 2e, the thickness of the back wall 2e can be suppressed while ensuring the heat insulating performance, and the internal volume with respect to the installation space can be increased.

  Further, in the present embodiment, the frozen suction pipe 82 is folded up and down at the corner of the heat insulating space 8 formed by the right side wall 2b and the back wall 2e of the cabinet 2, and the storage chamber is provided via the inner box 6. The freezing suction pipe 82 is not disposed in the heat insulating space 8 such as the left side wall 2a, the right side wall 2b, and the back wall 2e facing each other. Therefore, the refrigerant flowing through the refrigeration suction pipe 82 rises in temperature while providing a wide range of vacuum heat insulating material at a position facing the storage chamber via the inner box 6 that has a relatively large influence on the heat insulating performance of the cabinet 2. The required length can be secured.

  In the present embodiment, the refrigerated drain hose 33 for draining the defrost water generated by the refrigeration cooler 52 included in the refrigeration cycle 50 to the outside of the cabinet 2 is replaced with the heat insulating space 8 in which the refrigeration suction pipe 82 is disposed. Since the refrigerated drain hose 33 does not run in parallel with the refrigeration suction pipe 82 through which a relatively low-temperature refrigerant flows immediately after flowing out of the refrigeration cooler 54, the refrigerated drain hose 33 is provided at a corner different from the corner. There is no possibility that flowing defrost water freezes in the hose.

  In the present embodiment, the refrigeration suction pipe 82 provided inside the heat insulating partition wall 28 is chamfered through the side of the heat insulating partition wall 28 closer to the storage room in the refrigeration temperature zone than the storage room in the refrigeration temperature zone. 6be outside the heat insulation space 8 is pulled out, so that even if a refrigerant having a temperature close to the refrigeration temperature zone that has just flowed out of the refrigeration cooler 54 flows into the refrigeration suction pipe 82, condensation is unlikely to occur in the heat insulation partition wall 28. .

  Furthermore, in this embodiment, since the upstream side frozen suction pipe 82a is arranged outside the downstream side frozen suction pipe 82b in the width direction of the refrigerator, the back plate 6e of the inner box 6 and other plates connected thereto are connected. By providing a chamfered portion 6be that protrudes inward of the inner box 6 at the corner formed by the inner box 6, the upstream side freezing suction pipe 82a and the inner box 6 flow through a relatively low temperature refrigerant that has just flown out of the refrigeration cooler 54. It becomes easy to ensure a space | interval and generation | occurrence | production of the dew condensation to the inner box 6 can be suppressed.

  In the above-described embodiment, the case where the refrigeration suction pipe 82 enters the heat insulating space 8 of the cabinet 2 from the heat insulating partition wall 28 constituting the ceiling wall of the refrigeration cooler 54 has been described. The left side wall 2a or the right side wall 2b that defines one of the two may enter the heat insulating space 8, and the left side wall 2a or the right side wall 2b that defines the storage chamber is a plane perpendicular to the back wall 2e. Alternatively, it may be an inclined surface that goes forward as it goes outward in the width direction. Even in such a case, since the refrigeration cooler 54 is provided along the back plate 6a of the inner box 6, the side walls 2a, 2b and the back wall 2e hardly pass through the side walls 2a, 2b of the cabinet 2. The refrigeration suction pipe 82 can be piped to the corner of the heat insulating space 8 formed by the above, and a vacuum heat insulating material can be provided over a wide area of the heat insulating space 8 to increase the capacity of the installation space.

(Second Embodiment)
Next, a second embodiment will be described with reference to FIGS. In the second embodiment, a single cooler 154 cools the storage room in the refrigeration temperature zone and the storage room in the refrigeration temperature zone. It differs from 1st Embodiment cooled with the separate coolers 52 and 54. FIG.

  In the present embodiment, the interior of the cabinet 2 is partitioned vertically by two-stage heat insulation partition walls 28a and 28b, and a storage room in a refrigeration temperature zone, for example, the refrigerator room 10 is provided above the upper heat insulation partition wall 28a. A storage room in a freezing temperature zone, for example, an ice making room 14, a small freezing room, and a freezing room 16 are formed between the upper and lower two-stage heat insulating partition walls 28a and 28b, and refrigerated below the lower heat insulating partition wall 28b. A storage room in a temperature zone, for example, a vegetable room 12 is formed. A cooler room 120 and a duct 121 are provided at the back of a freezing temperature zone storage room (ice making room 14, small freezing room, freezing room 16) formed between the upper and lower heat insulating partition walls 28a and 28b. It has been. The cooler chamber 120 is provided with a cooler 154 and a blower fan 155, and the blower fan 155 stores the air in the cooler chamber 120 cooled by the cooler 154 in the freezing temperature zone via the duct 121. While supplying to the chambers 14 and 16, it supplies to the storage rooms 10 and 12 of a refrigeration temperature range, and these storage rooms are cooled.

  In the refrigerator 1 of this embodiment having such a configuration, the suction tube provided between the capillary tube 178 connected to the upstream side in the refrigerant flow direction of the cooler 154 and the suction side of the cooler 154 and the compressor 56. The pipe 182 is integrated so as to be able to exchange heat with each other by brazing or the like, thereby forming a pipe body 179.

  The pipe body 179 is provided in the cooler chamber 120 so as to divide the cooler chamber 120 from the cooler 154 provided along the back plate 6e of the inner box 6 or on the left and right sides of the cooler chamber 120. It enters the heat insulation space 8 from the left and right side walls 2a, 2b that divide the direction. The pipe body 179 that has entered the heat insulating partition wall 28a or the left and right side walls 2a, 2b is pulled out to the outside of either the left or right chamfered portion 6ae, 6be, for example, the right chamfered portion 6be. The pipe body 179 drawn to the outside of the chamfered portion 6be is bent upward and rises along the outside of the chamfered portion 6be, and is bent downward at the upper end portion of the chamfered portion 6be. The machine enters the machine chamber 34 through the step 4d-1 of the bottom plate 4d.

  Further, in the refrigerator 1, the water receiving part 135 that receives the defrosted water generated by the cooler 154 and the drainage that drains the defrosted water received by the water receiving part 135 to the machine room 34 provided outside the cabinet 2. A hose 137 is provided. The drainage hose 137 enters the heat insulating space 8 through the lead-out hole 6e-2 provided in the back plate 6e, and insulates the chamfered portion 6ae on the opposite side to the left chamfered portion 6be from which the pipe body 179 is drawn. It is pulled out to the space 8, descends along the chamfered portion 6 ae, enters the machine chamber 34 through the step portion 4 d-1 of the bottom plate 4 d of the outer box 4.

  Thus, even in the refrigerator according to the present embodiment in which the refrigerators 154 cool the storage rooms 10 and 12 in the refrigeration temperature zone and the storage rooms 14 and 16 in the refrigeration temperature zone, the cooler chamber 120 is located above or on the side. The suction pipe 182 enters the heat insulating space 8 from the heat insulating partition wall 28a or the left and right side walls 2a, 2b that divides the direction, and is connected to the compressor 56 provided in the machine chamber 34 through the heat insulating space 8 to thereby connect the first. The same effect as the embodiment is achieved.

  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, 7a-7e ... Vacuum heat insulating material, 8 ... Heat insulating space, 9 ... Heat insulating material, 10 ... Cold room, 12 ... Vegetable room, 14 ... Ice making room 15 ... Opening device, 16 ... Freezer compartment, 28 ... Thermal insulation partition wall, 34 ... Machine room, 35 ... Frozen water receiving part, 36 ... Refrigerated cooler room, 37 ... Frozen drain hose, 40 ... Refrigerator cooler room, 46 ... Control board, 50 ... Refrigeration cycle, 52 ... Refrigeration cooler, 54 ... Refrigeration cooler, 56 ... Compressor, 58 ... Condenser, 76 ... Refrigeration suction pipe, 79 ... Refrigeration pipe body, 82 ... Refrigeration suction pipe, 82a ... upstream side refrigeration suction pipe, 82b ... downstream side refrigeration suction pipe, 100 ... holder, 130 ... heat insulation fixture, 140 ... heat insulation fixture

Claims (6)

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; a cooler chamber is formed inside the inner box; A cabinet with a machine room formed on the outside;
A refrigeration cycle incorporated in the cabinet, having a cooler provided in the cooler chamber, a compressor provided in the machine chamber, and a suction pipe for returning the refrigerant flowing out of the cooler to the compressor. And comprising
The refrigerator in which the suction pipe enters the heat insulating space from a ceiling wall or a side wall that defines the cooler chamber, and is connected to the compressor through the heat insulating space.   The refrigerator according to claim 1, wherein the suction pipe is folded up and down at a corner of the heat insulating space formed by a side wall and a back wall of the cabinet. The suction pipe is disposed at a corner of the heat insulating space formed by the left and right side walls and the back wall of the cabinet,
A drainage hose for draining the defrost water of the cooler of the refrigeration cycle to the outside of the outer box is disposed at the corner of the heat insulating space formed by the left and right side walls and the back wall of the cabinet. The refrigerator according to claim 1 or 2. The cabinet has a heat insulating partition wall that partitions the inside of the inner box into a refrigerated storage room cooled to a refrigeration temperature zone and a refrigeration storage chamber cooled to a refrigeration temperature zone,
The upper part of the cooler chamber is partitioned by the heat insulating partition wall,
The refrigerator according to any one of claims 1 to 3, wherein the suction pipe enters the heat insulating space through a position close to the frozen storage chamber from the refrigerated storage chamber inside the heat insulating partition wall. The suction pipe is folded up and down at the corner of the heat insulating space formed by the side wall and the back wall of the cabinet, and is located upstream of the upstream suction pipe and downstream of the upstream suction pipe in the refrigerant flow direction. Side suction pipes run in parallel at the corners,
The refrigerator according to any one of claims 1 to 4, wherein the upstream suction pipe is provided outside the downstream suction pipe in the width direction of the cabinet. The refrigeration cycle includes a capillary tube connected to the cooler,
The capillary tube is inserted in a lead-out hole that is provided in a ceiling wall or side wall that partitions the cooler chamber and through which the suction pipe is inserted, and enters the heat insulating space from the ceiling wall or the side wall and passes through the heat insulating space. The refrigerator according to any one of claims 1 to 5, wherein the refrigerator is drawn to the outside of the outer box.

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