WO2019193627A1 - 冷凍冷蔵庫 - Google Patents

冷凍冷蔵庫 Download PDF

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Publication number
WO2019193627A1
WO2019193627A1 PCT/JP2018/014105 JP2018014105W WO2019193627A1 WO 2019193627 A1 WO2019193627 A1 WO 2019193627A1 JP 2018014105 W JP2018014105 W JP 2018014105W WO 2019193627 A1 WO2019193627 A1 WO 2019193627A1
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WO
WIPO (PCT)
Prior art keywords
heater
partition plate
refrigerator
surface member
insulating layer
Prior art date
Application number
PCT/JP2018/014105
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
荒木　正雄
大矢　恵司
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to SG11202009229UA priority Critical patent/SG11202009229UA/en
Priority to CN201880091906.5A priority patent/CN111936807B/zh
Priority to PCT/JP2018/014105 priority patent/WO2019193627A1/ja
Priority to MYPI2020004945A priority patent/MY196105A/en
Priority to AU2018417350A priority patent/AU2018417350B2/en
Priority to JP2020512115A priority patent/JP6899959B2/ja
Priority to TW108110667A priority patent/TWI689692B/zh
Publication of WO2019193627A1 publication Critical patent/WO2019193627A1/ja

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/04—Preventing the formation of frost or condensate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/02—Doors; Covers

Definitions

  • the present invention relates to a refrigerator-freezer provided with a double door.
  • Patent Document 1 In recent years, in refrigerators and refrigerators, there is one that suppresses dew condensation on the partition plate by mounting a heater unit on the partition plate that closes the gap between the doors and energizing the heater according to the ambient room temperature and humidity (for example, Patent Document 1).
  • Patent Document 1 by using a synthetic resin member as the surface member of the partition plate, the occurrence of dew condensation due to a temperature drop at the contact portion with the gasket provided between the door and the partition plate is suppressed.
  • the surface member made of synthetic resin is easily deformed in the height direction, and a reinforcing plate is required for reinforcement, which complicates the structure of the partition plate.
  • the temperature in the freezer varies depending on the position in the height direction.
  • the heater pattern arranged in the partition plate is adjusted (for example, see Patent Document 2).
  • the heat rise in the upper area of the heater is set to be smaller than that in the area other than the upper area, thereby suppressing the temperature rise in the upper part of the chamber.
  • the partition plate is provided on one door and is formed short with respect to the opening of the refrigerating chamber so that it can be rotated when the door is opened. A gap is formed between the two. Further, in order to close the gap between the upper part and the lower part, fins are formed in the upper and lower parts of the gasket. Since the upper and lower fin portions are exposed to the refrigerator compartment, the temperature is relatively lower than the partition plate surface, and dew is likely to occur. In order to prevent dew condensation, it is conceivable to adjust the calorific value distribution in the height direction by a heater pattern as in Patent Document 2 in order to avoid a complicated structure of the partition plate.
  • This invention was made in order to solve the above problems, and it aims at providing the refrigerator-freezer which can suppress dew condensation at the edge part of a partition plate, suppressing the increase in an electricity supply rate. To do.
  • the refrigerator-freezer has an opening, a refrigerator body in which a storage chamber is formed, two doors that can be opened and closed arranged alongside the opening, and a gap between the two doors. And a partition plate that closes the gap from the storage chamber side, the partition plate having a surface member facing the door and a cord-like heater disposed up to the end of the surface member
  • a heater unit, and the heater includes a heat generating portion that generates heat when energized and a basic insulating layer that covers the heat generating portion, and two or more layers are provided between the basic insulating layer and the surface member. An additional insulating layer is provided.
  • the insulating coating structure of the heater inside the partition plate is made to have one basic insulating layer and two or more additional insulating layers, thereby reducing the diameter and improving the degree of freedom of the heater pattern.
  • the heater can be turned up to the end of. Therefore, the temperature can be raised at the end of the partition plate, and dew condensation at the end of the partition plate can be suppressed while suppressing an increase in the electrical conductivity.
  • FIG. 2 is a cross-sectional view showing an AA cross section of FIG. 1.
  • FIG. 1 is a disassembled perspective view which shows the structure of the partition plate which concerns on Embodiment 1 of this invention.
  • refrigerator-freezer (refrigerator 100) of the present invention will be described with reference to the drawings.
  • FIG. 1 is a front view showing a refrigerator according to Embodiment 1 of the present invention.
  • FIG. 2 is a top perspective view showing a state in which the right door in the region R1 of FIG. 1 is opened.
  • FIG. 3 is a cross-sectional view showing the AA cross section of FIG.
  • a schematic configuration of the refrigerator 100 will be described with reference to FIGS.
  • the arrow X direction represents the width direction of the refrigerator 100
  • the arrow Y direction represents the depth direction of the refrigerator 100
  • the arrow Z direction represents the height direction of the refrigerator 100.
  • the refrigerator 100 includes a box-shaped refrigerator main body 10 having an open front surface, and a plurality of doors that block the opening 10a of the refrigerator main body 10.
  • the refrigerator main body 10 forms an outer shell of the refrigerator 100 as a box body by an outer box and an inner box (not shown), and a foam heat insulating material (not shown) is formed in a space between the outer box and the inner box. Filled.
  • the foamed heat insulating material fills and integrates the gap between the outer box and the inner box, and the outer box and the inner box function as a heat insulating box.
  • a space inside the inner box is partitioned by a plurality of partitions.
  • storage rooms such as a refrigerator room 1, an ice making room 2, a switching room 3, a freezer room 4, and a vegetable room 5 are formed from the upper part of the refrigerator body 10.
  • Each storage room is set to a different temperature zone depending on the application, and a temperature sensor (not shown) composed of, for example, a thermistor is installed in each storage room. Openable and closable doors are provided in front of each storage room.
  • the door of the refrigerating room 1 is formed by a double door rotating rotary door, and has a left door 7 arranged on the left side of the front surface of the refrigerating room 1 and a right door 8 arranged on the right side of the front surface of the refrigerating room 1. .
  • the ice making room 2, the switching room 3, the freezing room 4 and the vegetable room 5 are each provided with a drawer type door 6.
  • connecting hinges for connecting the refrigerator main body 10 and the door of the refrigerator compartment 1 are provided at both side ends of the outer box in the width direction (arrow X direction).
  • a connection hinge provided at the left end of the outer box connects the refrigerator body 10 and the left door 7.
  • a connection hinge provided at the right end of the outer box connects the refrigerator body 10 and the right door 8.
  • Each connection hinge has a hinge shaft, and the left door 7 and the right door 8 are opened from the center of the refrigerator main body 10 to both sides using each hinge shaft as a rotation axis.
  • An inter-door gap Gd is provided at the boundary between the left door 7 and the right door 8 so that the left door 7 and the right door 8 do not come into contact with each other in a rotation locus in which the left door 7 and the right door 8 rotate.
  • an outside air temperature sensor that detects the outside air temperature and an outside air humidity sensor that detects the outside air humidity are installed on the hinge portion 7a to which the connection hinge at the upper part of the left door 7 is attached.
  • the position where the outside air temperature sensor and the outside air humidity sensor are provided is not limited to the hinge portion 7a, and may be any place where the surrounding environment such as temperature and humidity can be detected. In particular, it is desirable that the detected value is installed at a position where it is not easily affected by the operation of the refrigerator 100.
  • the refrigerator 100 also includes a partition plate 9 that closes the inter-door gap Gd and partitions the refrigerator compartment 1 from the external space, and two gaskets 22 and 23 that tightly contact the partition plate 9 and the doors of the refrigerator compartment 1.
  • the partition plate 9 is a plate-like member extending in the height direction (arrow Z direction) along the door gap Gd, and covers the door gap Gd from the refrigerator compartment 1 side.
  • the partition plate 9 is installed on the inner plate 7 b of the left door 7.
  • FIG. 4 is an exploded perspective view showing the structure of the partition plate according to Embodiment 1 of the present invention.
  • the configuration of the partition plate 9 will be described with reference to FIGS.
  • the partition plate 9 includes a surface member 30 facing the inner plate 7 b of the left door 7, a heater unit 40 disposed in the surface member 30, and a heater cover 50 covering the heater unit 40 disposed in the surface member 30.
  • the surface member 30 is formed of, for example, a sheet metal or the like, and transmits heat from the heater unit 40 to the left door 7, the right door 8, the two gaskets 22, 23, and the like.
  • the heater unit 40 is composed of a planar aluminum foil heater, for example, and heats the surface member 30 by energization.
  • the heater cover 50 is made of resin or the like.
  • FIG. 5 is a cross-sectional view showing a state before the heater unit according to Embodiment 1 of the present invention is attached to a surface member.
  • FIG. 6 is a partially enlarged view of a region R2 in FIG.
  • the heater unit 40 includes a cord-like heater 41, a heat shield part 42 made of aluminum foil or the like, and a double-sided tape for attaching the heater 41 and the heat shield part 42 to the surface member 30. 43.
  • the double-sided tape 43, the heater 41, and the heat shield part 42 are arranged in this order from the surface member 30 toward the heater cover 50.
  • the heater 41 has a heat generating portion that generates heat when energized, and is arranged in a meandering manner so as to form a plurality of folded portions 41a.
  • the double-sided tape 43 affixes and holds the heater 41 and the heat shield part 42 having a meandering pattern (contouring) inside the surface member 30.
  • the heat shield part 42 covers a heater disposed inside the surface member 30.
  • the heat shield part 42 reflects the heat of the heater 41 to the surface member 30 side and suppresses heat transfer to the refrigerator compartment 1 side.
  • the heat shield part 42 is formed in a size larger than the area of the region where the heater 41 is arranged so that the pattern of the heater 41 can be fixed. For this reason, normally, in the width direction (arrow X direction) and the height direction (arrow Z direction), the heat shield portion 42 is provided with a blank portion from the heater 41 to the end of the heat shield portion 42.
  • the margin 45 that protrudes from the pattern at the upper end and lower end of the heat shield 42 is the central side.
  • the heater unit 40 is attached to the surface member 30 in the other state.
  • the partition plate 9 further includes a heat insulating material 61 disposed on the refrigerator compartment 1 side of the heater cover 50 and a back cover 60.
  • the heat insulating material 61 is made of polystyrene foam or the like, and suppresses the heat of the heater unit 40 from leaking from the heater cover 50 into the refrigerator compartment 1.
  • the back cover 60 is formed of resin or the like and is attached to the heater cover 50 to hold the heat insulating material 61.
  • An upper hinge 62 and an upper cover 63 are attached to the upper end portion of the back cover 60 by screws 64, and a spring 65, a lower hinge 66, and a lower portion are attached to the lower end portion of the back cover 60.
  • a side cover 67 is attached by screws 64.
  • Bearing portions 60 a for attaching the upper hinge 62 and the lower hinge 66 are formed at both ends of the back cover 60.
  • the upper hinge 62 and the lower hinge 66 connect the left door 7 and the partition plate 9 so that the partition plate 9 rotates in conjunction with the opening / closing operation of the left door 7.
  • the upper hinge 62 and the lower hinge 66 have shaft portions 62 a and 66 a that serve as the rotation shaft of the partition plate 9, and the shaft portions 62 a and 66 a are inserted into the bearing portions 60 a of the back cover 60.
  • the spring 65 biases the partition plate 9 toward the left door 7 side.
  • the upper cover 63 and the lower cover 67 cover the end of the partition plate 9 in the height direction (arrow Z direction), and are attached to the back cover 60 so that the upper hinge 62 and the lower hinge 66 are respectively attached. Hold.
  • a cover groove 63 a is formed in the upper part of the upper cover 63.
  • the heater unit 40 is affixed to the inside of the surface member 30 and is fitted by the heater cover 50 and the claw 31, the heat insulating material 61 is placed on the heater cover 50, and the back cover 60 to which a partition plate hinge or the like is attached is attached to the heater cover 50.
  • the partition plate 9 is formed.
  • the partition plate 9 is attached to the left door 7 by fixing the upper hinge 62 and the lower hinge 66 to the inner plate 7b of the left door 7 with attachment screws, respectively.
  • the partition plate 9 is formed on the left door 7 so that the center in the width direction (arrow X direction) of the surface member 30 coincides with the center of the inter-door gap Gd formed at the boundary between the left door 7 and the right door 8. It is attached. Grooves 16 are formed in the inner plate 7b of the left door 7 and the inner plate 8b of the right door 8, respectively.
  • the gasket 22 is provided between the surface member 30 and the inner plate 7b of the left door 7, and is fitted into the groove 16 of the inner plate 7b.
  • the gasket 23 is provided between the surface member 30 and the inner plate 8b of the right door 8, and is fitted into the groove 16 of the inner plate 8b.
  • a magnet 24 is embedded in each gasket 22, 23. When the left door 7 and the right door 8 are closed, the surface member 30 and each gasket 22 are brought into close contact with each other by the magnet 24.
  • the inner plate 7b of the left door 7 and the inner plate 8b of the right door 8 have protrusions 7c and 8c that protrude in the depth direction (arrow Y direction) so as to sandwich the partition plate 9 in the width direction (arrow X direction).
  • a packing 25 is installed between the protruding portion 7 c of the left door 7 and the partition plate 9.
  • the gasket 23 provided on the right door 8 has a rear extension 18 extending between the protruding portion 8 c of the right door 8 and the right side surface of the partition plate 9, and the partition plate is formed by the rear extension 18. Heat leakage around 9 is suppressed.
  • a guide portion 15 that guides the rotation of the partition plate 9 is provided on the ceiling 11 of the refrigerator compartment 1.
  • the guide portion 15 includes a base portion 15b attached to the ceiling 11, and a protrusion 15a (see FIG. 7) extending downward from the base portion 15b.
  • the protrusion 15 a of the guide portion 15 is accommodated in the cover groove portion 63 a formed in the upper cover 63.
  • the partition plate 9 rotates smoothly.
  • the partition plate 9 When the left door 7 is opened, the partition plate 9 has the projection 15a of the guide portion 15 in contact with the edge of the cover groove portion 63a formed in the upper cover 63, and the partition plate 9 rotates with the shaft portions 62a and 66a as the rotation shaft. Move. At this time, since the right side portion of the partition plate 9 turns backward due to the urging force of the spring 65, the partition plate 9 can be prevented from coming into contact with the right door 8. On the other hand, when the left door 7 is closed, the right portion of the partition plate 9 that has been turned backward is guided to the guide portion 15 and is rotated so as to exit from the left door 7 to the right. When both the left door 7 and the right door 8 are closed, the inter-door gap Gd is closed, and the entry of outside air into the refrigerator compartment 1 from the outside is suppressed.
  • FIG. 7 is a longitudinal sectional view showing the upper part of the partition plate in the CC section of FIG.
  • FIG. 8 is a longitudinal sectional view showing the lower part of the partition plate in the DD section of FIG.
  • the partition plate 9 is formed shorter than the entrance of the refrigerator compartment 1 in the height direction (arrow Z direction).
  • the frontage of the refrigerator compartment 1 is the distance between the floor 12 and the ceiling 11 of the refrigerator compartment 1.
  • a gap Gt is formed between the upper end of the partition plate 9 and the base portion 15b of the guide portion 15 provided on the ceiling 11, and the gap Gb is formed between the lower end of the partition plate 9 and the floor surface 12. Is formed.
  • the gasket 22 provided in the left door 7 has an upper fin 22t formed at the upper part in the height direction (arrow Z direction) and a lower fin 22b formed at the lower part. Is formed to be longer than the length of the partition plate 9.
  • the gasket 23 provided in the right door 8 has an upper fin 23t formed in the upper portion and a lower fin 23b formed in the lower portion, and the entire length of the gasket 23 is the length of the partition plate 9. It is formed to be longer than that.
  • the position of the gasket 23 in a state where the right door 8 is closed is represented by a one-dot chain line.
  • the upper fins 22t and 23t and the lower fins 22b and 23b are referred to as fin portions unless particularly distinguished.
  • Each upper fin 22t, 23t extends above the ceiling 11 of the refrigerator compartment 1 so as to cover the gap Gt formed in the upper part of the partition plate 9.
  • the upper fin 22t extends from the left door 7 to the right so as to cover the inter-door gap Gd
  • the upper fin 23t extends from the right door 8 to the left so as to cover the inter-door gap Gd. It extends to. That is, in the upper gap Gt where the partition plate 9 is not disposed, the two upper fins 22t and 23t overlap to close the inter-door gap Gd.
  • Each lower fin 22b, 23b extends below the floor 12 of the refrigerator compartment 1 so as to cover the gap Gb formed at the lower part of the partition plate 9.
  • the lower fin 22b extends from the left door 7 to the right so as to cover the door gap Gd
  • the lower fin 23b covers the right door 8 so as to cover the door gap Gd. It extends from the left side. That is, in the lower gap Gb where the partition plate 9 is not disposed, the two lower fins 22b and 23b overlap to close the inter-door gap Gd.
  • FIG. 1 At the upper end and the lower end of the surface member 30, flanges 32 extending toward the refrigerator compartment 1 are formed, and each flange 32 is provided with a screw hole 32a. Recessed screw accommodating portions 51 are formed at the upper end portion and the lower end portion of the heater cover 50, respectively. And the surface member 30 and the heater cover 50 are being fixed by inserting the screw 64 in the screw hole 32a in the upper end part and lower end part of the partition plate 9, and accommodating in the screw accommodating part 51.
  • each screw accommodating part 51 the heat insulating material 61 side is opened, and the wall surface part 51a facing the surface member 30 is formed in a semi-cylindrical shape.
  • the screw accommodating portion 51 is made of resin, and the screw 64 and the heater unit 40 are separated from each other to prevent the heater unit 40 from being damaged.
  • a gap Gc (for example, 1.8 mm) larger than the thickness of the heater unit 40 in the depth direction (arrow Y direction) is provided between the surface member 30 and the wall surface part 51a of the screw accommodating part 51.
  • the end of the heater unit 40 is disposed at Gc.
  • the gap Gc is the shortest distance between the surface member 30 and the wall surface portion 51a.
  • the heater unit 40 can be pasted from the upper end to the lower end of the surface member 30 by maximizing the pattern upper and lower end distance Lp (see FIG. 12) of the heater 41 by the screw accommodating portion 51 formed in the heater cover 50. it can.
  • the upper fins 22t and 23t are exposed to the refrigerator compartment 1 in the upper gap Gt, and the lower fins 22b and 23b are exposed to the refrigerator compartment 1 in the lower gap Gb.
  • the temperature is lower than that of the overlapping region overlapping with the partition plate 9.
  • the heater 41 is disposed up to the upper end and the lower end of the surface member 30, it is possible to suppress a temperature drop by overlapping a part of the heater 41 in the fin portion.
  • the refrigerator 100 is provided with the control part 90 which controls the driving
  • the control unit 90 is built in, for example, the refrigerator main body 10.
  • the control unit 90 controls a compressor, a damper device, and the like (not shown) so that the temperature of each storage room detected by each temperature sensor becomes a preset temperature preset for each storage room.
  • the opening and closing of the damper device is controlled based on the difference between the temperature of the refrigerator compartment 1 detected by the temperature sensor and the set temperature of the refrigerator compartment 1, and the amount of cold air blown into the refrigerator compartment 1 is adjusted.
  • control unit 90 calculates the energization rate Pr of the heater unit 40 based on the temperature of the refrigerator compartment 1, the outside air temperature, and the outside air humidity (outside air relative humidity Hout), and issues an energization instruction.
  • the energization rate Pr may be calculated by a known method.
  • FIG. 9 is an explanatory diagram showing an example of the energization rate of the heater unit according to Embodiment 1 of the present invention.
  • FIG. 10 is an explanatory diagram showing another example of the energization rate of the heater unit according to Embodiment 1 of the present invention.
  • Energization of the heater unit 40 is controlled so that the energization rate Pr is such that the surface member 30 of the partition plate 9 and the gaskets 22 and 23 around the surface member 30 are not dewed.
  • the energization rate Pr is a rate of energization time to the heater 41. For example, when energizing for 5 seconds out of 10 seconds, the energization rate Pr is expressed as 50%.
  • the energization rate Pr is calculated, for example, by giving the detected outside air relative humidity Hout to a plurality of calculation formulas set with the outside air temperature as a parameter. Further, the reference energization rate varies depending on the structure such as the thickness of the partition plate 9 and the thermal conductivity of the material, the rated wattage of the heater 41, the set temperature of the refrigerator compartment 1, and the like.
  • the calculation formula is set for each of three stages: when the outside air temperature is 20 ° C. or lower, when it is higher than 20 ° C. and lower than 30 ° C., and when it is higher than 30 ° C. and lower than 40 ° C.
  • the energization rate Pr increases linearly as the outside air relative humidity Hout increases.
  • FIG. 9 illustrates the energization rates Pr1, Pr2, and Pr3 in three temperature zones.
  • three levels are set for each of the case where the outside air temperature is 20 ° C. or lower, the case where it is higher than 20 ° C. and 30 ° C. or lower, and the case where it is higher than 30 ° C. and lower than 40 ° C.
  • the energization rate Pr increases logarithmically as the outside air relative humidity Hout increases.
  • FIG. 10 illustrates the energization rates Pr4, Pr5, and Pr6 in three temperature zones.
  • the calculation formula is stored in advance in the control unit 90 as a program.
  • Each coefficient may be determined in advance through experiments or the like.
  • the temperature range of the outside air temperature for setting the calculation formula is not limited to the above three stages, and may be set in increments of 5 ° C., for example.
  • FIG. 11 is a schematic diagram showing an insulating layer configuration of the heater unit according to Embodiment 1 of the present invention. Based on FIG. 11, the electrical insulation structure of the heater unit 40 will be described.
  • the heater 41 has a core wire 71 made of a conducting wire or the like and a resistance wire 72 made of a nichrome wire or the like.
  • the heater unit 40 used in the refrigerator 100 is required to have a double insulation structure in the Electrical Appliance and Material Safety Law.
  • the heater unit 40 since the heater unit 40 is attached to the back surface of the non-chargeable metal part (surface member 30) that may be touched by a person, the heater unit 40 itself needs to have a double insulation structure.
  • the Electrical Appliance and Material Safety Law stipulates that: (1) Basic insulation: No matter the thickness as long as the coating thickness is 0.3 mm or more or the withstand voltage is 1.5 kV / min or more. (2) Additional insulation: Any thickness as long as the coating thickness is 0.4 mm or more, or two layers and each withstand voltage 1.5 kV / min or more.
  • a heater having a basic insulating layer and an additional insulating layer that satisfy a thickness regulation by winding a single resistance wire around a core wire in a spiral and extruding it twice with PVC (Polyvinyl chloride). was produced.
  • a core wire having a diameter of 0.6 mm wound with a resistance wire having a diameter of 0.08 mm is covered with a basic insulating layer having a thickness of 0.70 mm, and the basic insulating layer has a thickness. It is covered with an additional insulating layer of 1.00 mm.
  • the finished outer diameter Dh is about 3 mm, and the minimum bend R is about 5 mm.
  • the minimum bending R is usually set larger than the finished outer diameter Dh.
  • the insulating layer is made of a fluorine-based material (ETFE: Ethylene Tetra Fluoro Ethylene), and the coating thickness is reduced while satisfying the withstand voltage regulations of the Electrical Appliance and Material Safety Law. Can do.
  • the heater 41 is formed by covering a core wire 71 having a diameter of 0.14 mm around which three resistance wires 72 having a diameter of 0.05 mm are wound with a base insulating layer 73 having a thickness of 0.08 mm. Is coated with two additional insulating layers 74 and 75. Each of the additional insulating layers 74 and 75 has a thickness of 0.15 mm, and the finished outer diameter Dh of the heater 41 is 0.9 mm.
  • the heater 41 In the heater 41, three resistance wires 72 are arranged side by side and spirally wound around the core wire 71.
  • the reason why the number of the resistance wires 72 is three is that the heater 41 is lengthened in order to increase the degree of freedom in patterning in a state where the heater rating is about the same as the conventional one.
  • the number of resistance wires 72 may be changed according to the required heater rating and pattern.
  • FIG. 12 is a schematic diagram showing a pattern of the heater unit according to Embodiment 1 of the present invention.
  • the heater rating is 100V and 11.1W.
  • the cord-like heater 41 is sandwiched between the heat shield portion 42 and the double-sided tape 43 and is stuck and fixed to the surface member 30.
  • the pattern upper and lower end distance Lp (for example, 781 mm), which is the distance between the uppermost turn 41t and the lowermost turn 41b, is longer than the pattern upper and lower end distance (for example, 754 mm) in the conventional heater. It is formed to become. This is because the heater is brought as close as possible to the upper gap Gt and the lower gap Gb of the partition plate 9.
  • the heater cover 50 is formed with a screw accommodating portion 51, the blank portion 45 of the heater unit 40 is bent toward the center side, and the heater 41 is reduced in diameter. Thereby, a part of pattern can be arrange
  • Table 2 compares the distance between the pattern of the heater 41 and the end face of the partition plate 9 with respect to the heater pattern of FIG. As shown in Table 2 and FIGS. 7 and 8, the distance Lt between the uppermost turn 41t of the pattern and the upper end surface of the partition plate 9 is 6.2 mm in the heater unit 40, and 15.5 in the conventional example. It becomes. The distance Lb between the lowermost turn 41b of the pattern and the lower end surface of the partition plate 9 is 4.2 mm in the heater unit 40 and 9.2 mm in the conventional example.
  • the distances Lt and Lb can be reduced within 7 mm, and the overlapping area with the patterns on the upper fins 22t and 23t and the lower fins 22b and 23b can be widened. Therefore, when compared with an equivalent energization rate, the temperature of the fin portion can be increased as compared with the conventional case, and dew can be suppressed.
  • FIG. 13 is a diagram showing a heat generation density distribution of the heater unit according to Embodiment 1 of the present invention.
  • the horizontal axis represents the height position Zp in the partition plate 9, and the vertical axis represents the heat generation density Hd [W] of the heater unit 40.
  • the heat generation density distribution of the heater unit 40 is indicated by a solid line, and the heat generation density distribution of the conventional heater unit is indicated by a broken line.
  • the scale 1 represents the upper end of the partition plate 9, and the scale 31 represents the lower end of the partition plate 9.
  • the height position Zp of the partition plate 9 is divided into 29 between the upper end and the lower end of the partition plate 9, and the heat generation density at each height position Zp is calculated.
  • the heat generation density distribution of the heater unit 40 and the heat generation density distribution of the conventional example are calculated using the same rated W number.
  • the heater unit 40 has a higher heat generation density Hd at the height position Zp (for example, the scales 1 to 3 and the scales 29 to 31) overlapping the fins than the conventional example.
  • Hd the heat generation density
  • the reason why the heat generation density Hd is smaller than the conventional one at the center position of the partition plate 9 (for example, the scale 16) is that the heat generation density Hd is collected at the upper and lower ends with the same rating. In this way, by increasing the heat generation density Hd at the upper end portion and the lower end portion of the partition plate 9 as compared with the central portion, the dew resistance can be increased with a minimum heater input, that is, with a current rate.
  • the pattern was adjusted so that the heat generation density Hd in the region overlapping the fin portion was about 0.6 to 0.7 W. This is for improving the temperature distribution described later in consideration of the surface temperature of the partition plate 9 and the temperature of the fin portion when the refrigerator compartment 1 is 3 ° C. and the clearance between the upper and lower ends of the partition plate is about 5 mm.
  • the heat generation density Hd in the region overlapping with the fin portion may be changed, but at least 0.5 W or more at the top and bottom, in other words, the heater rating of 4.5 % Or more is desirable.
  • FIG. 14 is a diagram showing the temperature of the partition plate surface and the fin portion according to Embodiment 1 of the present invention.
  • the horizontal axis represents the vertical part Zh, the left side is the ceiling 11 side of the refrigerator compartment 1, and the right side is the floor 12 side of the refrigerator compartment 1.
  • the vertical axis represents the temperature Th of the partition plate 9, the upper fins 22t and 23t, or the lower fins 22b and 23b. This is a measurement result at a heater rating of 100 [V] and 11.1 [W] under an environmental condition where the outside air temperature is 30 ° C. and the outside air relative humidity is Hout 75%.
  • the temperature data 83 in the conventional example indicated by a broken line is a result when the energization rate Pr is 53%.
  • the temperature Tp of the central portion of the partition plate 9 is 35 ° C.
  • the temperature Tp of the upper fins 22t and 23t and the lower fins 22b and 23b (fin portions) is about 27 ° C. ing.
  • the dew point temperature is 25.8 ° C. or more in each part, the temperature difference between the fin part and the center part is large, and the temperature distribution is poor.
  • the energization rate is set in accordance with the fin portion, the temperature is excessively increased in the central portion, and the heater input is wasted.
  • the temperature data 84 indicated by a one-dot chain line is a result when the energization rate Pr is 53% in the heater unit 40.
  • the temperature of the fin portion is increased, the temperature of the central portion of the partition plate 9 is decreased, the temperature difference of the partition plate 9 as a whole is small, and the temperature distribution is good. Even in the fin portion where the temperature is the lowest among the partition plate 9 and the fin portion, there is a margin with respect to the dew point temperature Td.
  • the temperature data 85 indicated by a solid line is a result when the energization rate Pr is adjusted so that the temperature of the fin portion is equal to that of the conventional example. In this case, the energization rate Pr was changed from 53% to 34%, which was reduced by 19%. Since the rating is 11.1 W, the heater input is reduced by about 20% (2 W).
  • the heater 41 includes the heat generating portion (resistance wire 72) and the basic insulating layer 73 that covers the heat generating portion, and the basic insulating layer 73, the surface member 30, and the like. Two or more additional insulating layers 74 and 75 are provided between them. And the heater 41 is arrange
  • the insulation coating structure of the heater 41 inside the partition plate 9 is made up of three layers including one basic insulating layer and two additional insulating layers, thereby reducing the diameter of the heater 41 and reducing the minimum bend R. The degree of freedom can be increased, and the heater 41 can be put up to the end of the partition plate 9.
  • the temperature can be raised at the end portion of the partition plate 9, and the end of the partition plate 9 can be suppressed while reducing the temperature difference in the height direction (arrow Z direction) of the partition plate 9 to suppress the increase in the power supply rate Pr.
  • the dew at the part can be suppressed.
  • a heater pressing portion (wall surface portion 51 a) that extends inward so as to sandwich the end portion of the heater 41 while forming a preset gap Gc with the surface member 30 is formed at the end portion of the heater cover 50. Is formed. Thereby, the lifting of the heater unit 40 can be suppressed, and the screw 41 and the heater 41 can be separated from each other to prevent the heater 41 from being damaged.
  • the heater 41 is disposed up to the end of the partition plate 9, and the partition plate 9 The temperature drop at the end can be suppressed.
  • the heater unit 40 has a heat shield part 42, and the heat shield part 42 has a blank portion 45 protruding from the pattern of the heater 41 at the end of the partition plate 9 folded back toward the center.
  • the pattern of the heater 41 can be provided to the full length of the surface member 30, and the amount of heat generated at the end can be increased to further suppress dew condensation.
  • the refrigerator 100 further includes gaskets 22 and 23 having fins, and the heater 41 extends to the overlapping region of the surface member 30 overlapping the fins. Thereby, it can arrange
  • FIG. FIG. 15 is a schematic diagram showing an insulating layer configuration of a heater unit according to Embodiment 2 of the present invention.
  • the insulation structure of the heater unit 140 is different from that in the first embodiment. Assuming that the insulation withstand voltage is maintained, the insulation specification is changed while ensuring the degree of freedom of the heater pattern. This is different from the case of the first embodiment.
  • items not particularly described are the same as those in the first embodiment, and the same functions and configurations are described using the same reference numerals.
  • the second additional insulating layer is formed of the insulating sheet 175.
  • the insulating sheet 175 is preferably composed of, for example, a polyethylene sheet having a thickness of 25 ⁇ m that has an insulation withstand voltage of 1.5 kV / min or more (actually about 5 kV / min).
  • a double-sided tape 143, an insulating sheet 175, and a double-sided tape 143 are laminated in this order from the surface member 30 side between the surface member 30 and the cord-shaped heater 141.
  • the insulating sheet 175 is affixed in advance to the inside of the surface member 30 by the double-sided tape 143 in view of the balance between the workability of manufacturing the heater unit 140 and the workability of assembling the partition plate 9 using the heater unit 140. It is good to keep. Note that instead of using two double-sided tapes 143, the heat shield 142 and the insulating sheet 175 may be glued and pasted together.
  • the partition plate 9 is provided with a triple insulation structure from the surface member 30 that may be touched by a person, and the refrigerating chamber 1 side of the heater 141 is covered with the heat insulating material 61 and the back cover 60 so as to be insulative. Is secured. That is, on the refrigerator compartment 1 side, a triple insulation structure is provided from the back cover 60 that may be touched by a person.
  • the insulating sheet 175 is used as the second additional insulating layer, when the heater 141 is manufactured, extrusion is only required twice, and the manufacturing process can be reduced. Further, in the heater 141, one additional insulating layer covering the heater 141 can be omitted as compared with the case of the first embodiment, so that the finished outer diameter Dh can be reduced (for example, 0.6 mm). Also in this case, the minimum bending R of the heater 141 can be about 2 mm, the degree of freedom of the pattern of the heater 141 can be increased, and the heater 141 can be arranged up to the upper end portion and the lower end portion of the partition plate 9.
  • Two insulating sheets 175 may be provided as an additional insulating layer between the surface member 30 and the heater 141, and the insulating coating of the heater 141 may be only one layer of the basic insulating layer 173. According to such a configuration, since the coating is small, the finished outer diameter Dh of the heater 141 can be further reduced, and the extrusion process of the heater 141 can be performed only once, so that the manufacturing process can be further reduced. Also in this case, a laminate of two insulating sheets 175 may be attached to the surface member 30 in advance.
  • one of the two or more additional insulating layers is formed on the heater 141 so as to cover the basic insulating layer 173, and the other layer is the heater 141 and the surface member.
  • 30 is an insulating sheet 175 disposed between the two. As in the case of the first embodiment, this increases the degree of freedom of the pattern and arranges it at the end of the partition plate 9 to suppress dew at the end of the partition plate 9 and add one layer. By providing an insulating layer outside the heater 141, the heater 141 can be further reduced in diameter to facilitate wiring.
  • FIG. FIG. 16 is a schematic diagram showing an insulating layer configuration of a heater unit according to Embodiment 3 of the present invention.
  • the insulation structure of the heater unit 240 is different from that in the first embodiment.
  • items that are not particularly described are the same as those in Embodiment 1, and the same functions and configurations are described using the same reference numerals.
  • each resistance wire 272 wound around the core wire 271 is covered with the basic insulating layer 273. Since the resistance wire 272 is thin, it is difficult to form the basic insulating layer 273 by extrusion molding. In this case, each resistance wire 272 may be covered with the basic insulating layer 273 by bumping.
  • the additional insulating layers 274 and 275 are formed by extrusion as in the first embodiment.
  • the finished outer diameter Dh can be suppressed to about 0.6 mm, the minimum bending R of the heater 241 can be set to about 2 mm, and the degree of freedom of the pattern can be secured to the same extent as in the first embodiment. Therefore, it is possible to suppress dew condensation at the upper end portion and the lower end portion of the partition plate 9 while reducing the energization rate.
  • a two-layer insulation coating may be set on the resistance wire (the basic insulation layer and the first additional insulation layer), and one additional insulation layer may be coated on the outside.
  • the basic insulating layer 273 is provided so as to cover the resistance wire 272, and the two or more additional insulating layers 274 and 275 cover the basic insulating layer 273. It is formed on the heater 241. As in the case of the first embodiment, this increases the degree of freedom of the pattern and arranges it at the end of the partition plate 9 to suppress dew at the end of the partition plate 9 and generate heat by energization.
  • the heat generating portion can be directly insulated with the basic insulating layer 273 and reliably insulated.
  • a refrigerator has a refrigerator compartment 1, an ice making compartment 2, a switching compartment 3, a freezer compartment 4, and a vegetable compartment 5 from the upper part of the main body.
  • the heater unit 40 may be provided with three or more additional insulating layers.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Refrigerator Housings (AREA)
  • Surface Heating Bodies (AREA)
PCT/JP2018/014105 2018-04-02 2018-04-02 冷凍冷蔵庫 WO2019193627A1 (ja)

Priority Applications (7)

Application Number Priority Date Filing Date Title
SG11202009229UA SG11202009229UA (en) 2018-04-02 2018-04-02 Refrigerator-freezer
CN201880091906.5A CN111936807B (zh) 2018-04-02 2018-04-02 制冷冰箱
PCT/JP2018/014105 WO2019193627A1 (ja) 2018-04-02 2018-04-02 冷凍冷蔵庫
MYPI2020004945A MY196105A (en) 2018-04-02 2018-04-02 Refrigerator-Freezer
AU2018417350A AU2018417350B2 (en) 2018-04-02 2018-04-02 Refrigerator-freezer
JP2020512115A JP6899959B2 (ja) 2018-04-02 2018-04-02 冷凍冷蔵庫
TW108110667A TWI689692B (zh) 2018-04-02 2019-03-27 冷凍冰箱

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JP2022104679A (ja) * 2020-12-29 2022-07-11 アクア株式会社 冷蔵庫
CN115143707A (zh) * 2022-07-11 2022-10-04 长虹美菱股份有限公司 一种冰箱抽屉、冰箱及温度控制方法

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000161841A (ja) * 1998-11-30 2000-06-16 Mitsubishi Electric Corp 冷蔵庫
JP2001041637A (ja) * 1999-07-23 2001-02-16 Sanyo Electric Co Ltd 低温貯蔵庫
JP2003347017A (ja) * 2002-05-29 2003-12-05 Mitsui Kozan Material Kk 被覆ヒーター線及び電熱ヒーター
JP2011146368A (ja) * 2009-12-15 2011-07-28 Panasonic Corp 面状採暖具の製造方法
JP2013221715A (ja) * 2012-04-18 2013-10-28 Mitsubishi Electric Corp 冷蔵庫
JP2014020572A (ja) * 2012-07-12 2014-02-03 Hitachi Appliances Inc 冷蔵庫
US9157676B2 (en) * 2012-03-16 2015-10-13 Samsung Electronics Co., Ltd. Refrigerator
JP2016011766A (ja) * 2014-06-27 2016-01-21 株式会社東芝 冷蔵庫
JP2017020754A (ja) * 2015-07-15 2017-01-26 日立アプライアンス株式会社 冷蔵庫

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4859898B2 (ja) * 2008-09-18 2012-01-25 三菱電機株式会社 冷凍冷蔵庫
CN101846430B (zh) * 2009-03-26 2011-11-09 株式会社东芝 冰箱
JP5788159B2 (ja) * 2010-09-29 2015-09-30 株式会社東芝 冷蔵庫
JP5957684B2 (ja) * 2011-12-02 2016-07-27 パナソニックＩｐマネジメント株式会社 冷蔵庫
JP2013185731A (ja) * 2012-03-07 2013-09-19 Panasonic Corp 冷蔵庫
JP6334186B2 (ja) * 2014-02-05 2018-05-30 東芝ライフスタイル株式会社 冷蔵庫
CN206449987U (zh) * 2014-04-24 2017-08-29 松下知识产权经营株式会社 冷藏库
JP5961822B2 (ja) * 2014-04-24 2016-08-02 パナソニックＩｐマネジメント株式会社 冷蔵庫
JP6382637B2 (ja) * 2014-08-22 2018-08-29 東芝ライフスタイル株式会社 冷蔵庫
JP6334418B2 (ja) * 2015-01-15 2018-05-30 日立アプライアンス株式会社 冷蔵庫
JP2016200309A (ja) * 2015-04-08 2016-12-01 日立アプライアンス株式会社 冷蔵庫
JP5934953B1 (ja) * 2015-04-24 2016-06-15 パナソニックＩｐマネジメント株式会社 冷蔵庫
KR20170017691A (ko) * 2015-08-07 2017-02-15 히타치 어플라이언스 가부시키가이샤 단열 부품 및 냉장고
JP2018004214A (ja) * 2016-07-07 2018-01-11 東芝ライフスタイル株式会社 冷蔵庫

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000161841A (ja) * 1998-11-30 2000-06-16 Mitsubishi Electric Corp 冷蔵庫
JP2001041637A (ja) * 1999-07-23 2001-02-16 Sanyo Electric Co Ltd 低温貯蔵庫
JP2003347017A (ja) * 2002-05-29 2003-12-05 Mitsui Kozan Material Kk 被覆ヒーター線及び電熱ヒーター
JP2011146368A (ja) * 2009-12-15 2011-07-28 Panasonic Corp 面状採暖具の製造方法
US9157676B2 (en) * 2012-03-16 2015-10-13 Samsung Electronics Co., Ltd. Refrigerator
JP2013221715A (ja) * 2012-04-18 2013-10-28 Mitsubishi Electric Corp 冷蔵庫
JP2014020572A (ja) * 2012-07-12 2014-02-03 Hitachi Appliances Inc 冷蔵庫
JP2016011766A (ja) * 2014-06-27 2016-01-21 株式会社東芝 冷蔵庫
JP2017020754A (ja) * 2015-07-15 2017-01-26 日立アプライアンス株式会社 冷蔵庫

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CN111936807B (zh) 2022-02-18
AU2018417350B2 (en) 2021-11-11
JPWO2019193627A1 (ja) 2021-01-14
AU2018417350A1 (en) 2020-09-03
TWI689692B (zh) 2020-04-01
CN111936807A (zh) 2020-11-13
MY196105A (en) 2023-03-14
TW201942532A (zh) 2019-11-01
JP6899959B2 (ja) 2021-07-07

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