WO2024053035A1 - 冷蔵庫 - Google Patents

冷蔵庫 Download PDF

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Publication number
WO2024053035A1
WO2024053035A1 PCT/JP2022/033644 JP2022033644W WO2024053035A1 WO 2024053035 A1 WO2024053035 A1 WO 2024053035A1 JP 2022033644 W JP2022033644 W JP 2022033644W WO 2024053035 A1 WO2024053035 A1 WO 2024053035A1
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WO
WIPO (PCT)
Prior art keywords
inner box
region
wiring
internal space
refrigerator
Prior art date
Application number
PCT/JP2022/033644
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English (en)
French (fr)
Japanese (ja)
Inventor
逸人 水野
立峻 杉浦
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 JP2024545352A priority Critical patent/JPWO2024053035A1/ja
Priority to PCT/JP2022/033644 priority patent/WO2024053035A1/ja
Publication of WO2024053035A1 publication Critical patent/WO2024053035A1/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
    • F25D23/00—General constructional features
    • F25D23/08—Parts formed wholly or mainly of plastics materials

Definitions

  • the present disclosure relates to a refrigerator.
  • Patent Document 1 discloses a refrigerator in which an inner box and an outer box are provided with gas vent holes for releasing carbon dioxide gas generated when urethane foam is injected to the outside of the refrigerator main body.
  • the diameter of the degassing hole is approximately 1 mm in order to suppress leakage of urethane foam to the outside while allowing carbon dioxide gas to be released.
  • the inner box is provided with a vent hole, the appearance of the inner box will be poor, and the urethane foam may be exposed through the vent hole.
  • the gas vent hole is covered with a sealing member from the side in contact with the urethane foam, but with this method, the gas vent hole and the sealing member are visible to the user, resulting in poor appearance.
  • the present disclosure has been made in view of the above circumstances, and provides a refrigerator that can discharge carbon dioxide gas generated when urethane foam is injected without impairing the design of the refrigerator body.
  • the refrigerator according to the present disclosure includes an outer box and an inner box, an internal space is formed between the outer box and the inner box, and a wiring is provided in either or both of the inner box and the outer box.
  • a refrigerator body in which a hole is formed, a vacuum insulation material disposed in the internal space, a foam filled between the vacuum insulation material and the outer box, and between the vacuum insulation material and the inner box.
  • urethane a wiring routed from the internal space to the outside of the internal space through the wiring hole, and a degassing member attached to the wiring and having a structure through which carbon dioxide gas passes, The degassing member is located across the internal space and the outside of the internal space via the wiring hole.
  • the degassing member attached to the wiring is located across the internal space and the outside of the internal space via the wiring hole. Therefore, carbon dioxide gas generated when urethane foam is injected is discharged from the internal space via the gas venting member. Therefore, there is no need to provide a gas vent hole, and it is possible to provide a refrigerator that can discharge carbon dioxide gas without impairing the design of the refrigerator main body.
  • FIG. 1 is a front view of the refrigerator according to Embodiment 1.
  • FIG. 1 is a perspective view of a refrigerator according to Embodiment 1.
  • FIG. 1 is a schematic front cross-sectional view of a refrigerator main body according to Embodiment 1.
  • FIG. 4 is a schematic cross-sectional view taken along the line AA shown in FIG. 3 of the refrigerator main body according to the first embodiment.
  • FIG. 3 is a perspective view of the upper part of the inner box according to the first embodiment.
  • FIG. 3 is a rear perspective view of the vicinity of the ceiling surface of the inner box according to the first embodiment.
  • FIG. 3 is a diagram showing a mounting portion provided on the ceiling surface portion of the inner box according to the first embodiment.
  • FIG. 3 is an enlarged view of the degassing member according to the first embodiment.
  • FIG. 2 is a rear view of the refrigerator main body according to the first embodiment.
  • 7 is a rear perspective view showing a heat dissipation pipe and a ceiling vacuum insulation material provided on the ceiling surface of the inner box shown in FIG. 6.
  • FIG. 11 is a schematic cross-sectional view of the inner box according to Embodiment 1 taken along the line CC shown in FIG. 10.
  • FIG. FIG. 3 is a rear perspective view showing a first area around the ceiling surface of the inner box according to the first embodiment.
  • FIG. 7 is a schematic cross-sectional view taken along the line BB shown in FIG. 6 of the inner box according to the first embodiment.
  • FIG. 3 is a diagram showing outer box holes provided in the outer box according to the first embodiment.
  • FIG. 7 is a schematic cross-sectional view taken along the line BB shown in FIG. 6 of the inner box according to the second embodiment.
  • a refrigerator 100 according to an embodiment will be described with reference to the drawings.
  • the same components will be described with the same reference numerals, and repeated description will be given only when necessary.
  • the present disclosure may include any combination of combinable configurations among the configurations described in each embodiment below. Further, in the drawings, the size relationship of each component may differ from the actual one.
  • the forms of the constituent elements shown in the entire specification are merely examples, and are not limited to the forms described in the specification. In particular, the combinations of components are not limited to those in each embodiment, and components described in other embodiments can be applied to other embodiments.
  • FIG. 1 is a front view of refrigerator 100 according to Embodiment 1
  • FIG. 2 is a perspective view of refrigerator 100 according to Embodiment 1. Note that although the following explanation will be given using a 6-door refrigerator 100 as an example, the first embodiment can also be applied to a refrigerator 100 with 5 doors or less, or 7 doors or more.
  • the refrigerator 100 includes a refrigerator main body 101 that is a heat insulating box that forms an outer shell. Inside the refrigerator body 101, a plurality of storage chambers each having an opening on the front side of the refrigerator body 101 are provided. Specifically, as shown in FIG. 1, the refrigerator 100 is provided with a refrigerator compartment 1, an ice-making compartment 2, a small-sized freezer compartment 3, a freezer compartment 4, and a vegetable compartment 5.
  • the refrigerator compartment 1 is provided at the top of the refrigerator 100, and its front opening is freely openable and closable with two double doors, a refrigerator compartment left door 6 and a refrigerator compartment right door 7.
  • a panel 83 indicating the status of the refrigerator 100 is provided on the surface of the left door 6 of the refrigerator compartment.
  • the panel 83 is a touch panel that also serves as an input section and a notification section.
  • the input section is an operation switch for setting the temperature of the refrigerator compartment 1, the small freezer compartment 3, the freezer compartment 4, and the vegetable compartment 5.
  • the notification section displays various information in addition to the temperatures of the refrigerator compartment 1, the small freezer compartment 3, the freezer compartment 4, and the vegetable compartment 5.
  • an ice-making compartment 2 which is opened and closed by an ice-making compartment door 31, and a small-sized freezer compartment 3, which is opened and closed by a small-sized freezing compartment door 32, are arranged in parallel.
  • the ice making compartment 2 is configured such that when the ice making compartment door 31, which is a drawer door, is pulled out, the storage compartment is pulled out to the user side.
  • the small-sized freezer compartment 3 is configured such that when the small-sized freezer compartment door 32 is pulled out, the storage compartment is pulled out to the user side.
  • a vegetable compartment 5 is provided at the bottom of the refrigerator 100, and a freezer compartment 4 is provided above the vegetable compartment 5.
  • This freezer compartment 4 is provided below the ice making compartment 2 and the small freezer compartment 3 which are arranged in parallel on the left and right, and above the vegetable compartment 5.
  • the freezer compartment 4 is configured such that when the freezer compartment door 33 is pulled out, the storage compartment is pulled out to the user side.
  • the vegetable compartment 5 is configured such that when the vegetable compartment door 34 is pulled out, the storage compartment is pulled out to the user side.
  • the refrigerator compartment 1 is placed above and the vegetable compartment 5 is placed below with the ice making compartment 2, small freezer compartment 3, and freezer compartment 4 in between. but not limited to.
  • the vertical positions of the freezer compartment 4 and the vegetable compartment 5 may be reversed.
  • the refrigerator 100 only needs to have at least one of a refrigerator compartment 1, an ice-making compartment 2, a small-sized freezer compartment 3, a freezer compartment 4, and a vegetable compartment 5.
  • hinges 82 are provided at the left and right upper corners of the front surface of the refrigerator main body 101.
  • the hinge 82 supports the left door 6 of the refrigerator compartment and the right door 7 of the refrigerator compartment so that they can be opened and closed.
  • FIG. 3 is a schematic front cross-sectional view of the refrigerator main body 101 according to the first embodiment.
  • the refrigerator main body 101 includes an inner box 8 and an outer box 9, and constitutes a heat insulating box body having an opening on the front side.
  • a refrigerator compartment 1 an ice-making compartment 2, and a small-sized freezer compartment 3 are partitioned by a partition 10, and an ice-making compartment 2 and a small-sized freezer compartment 3 are partitioned by a partition 11.
  • the ice making compartment 2, the small-sized freezer compartment 3, and the freezing compartment 4 are divided by a partition 12, and the freezing compartment 4 and the vegetable compartment 5 are divided by a partition 13.
  • the inner box 8 is composed of a left side part 14a, a right side part 14b, a ceiling part 15, a floor part 16, a back part 30, and an inner box corner part 17.
  • the four inner box corner parts 17 are each an angle formed by the left side part 14a and the ceiling surface part 15, an angle formed by the left side part 14a and the floor surface part 16, an angle formed by the right side part 14b and the ceiling surface part 15, or an angle formed by the right side surface part 14b. This is the angle formed by the floor surface portion 16.
  • FIG. 4 is a schematic cross-sectional view taken along the line AA shown in FIG. 3 of the refrigerator main body 101 according to the first embodiment.
  • an internal space 90 is formed between the outer box 9 and the inner box 8.
  • a vacuum heat insulating material 40 is arranged in an internal space 90 between the inner box 8 and the outer box 9.
  • the refrigerator main body 101 of the first embodiment is provided with a plurality of vacuum insulation materials 40, and depending on the placement location, a ceiling vacuum insulation material 41, a back vacuum insulation material 42, a floor vacuum insulation material 43, and There are cases where the names are distinguished and explained, such as the side vacuum insulation material 44.
  • a ceiling vacuum insulation material 41 is disposed between the inner box 8 and the outer box 9 of the ceiling surface section 15.
  • a back vacuum insulation material 42 is arranged between the inner box 8 and the outer box 9 on the back side of the refrigerator main body 101.
  • a floor vacuum heat insulating material 43 is arranged between the inner box 8 and the outer box 9 in the floor section 16.
  • FIG. 5 is a perspective view of the upper part of the inner box 8 according to the first embodiment.
  • FIG. 5 shows the upper part of the inner box 8 viewed diagonally from below.
  • FIG. 6 is a rear perspective view of the vicinity of the ceiling surface portion 15 of the inner box 8 according to the first embodiment.
  • FIG. 7 is a diagram showing a mounting portion 27 provided on the ceiling surface portion 15 of the inner box 8 according to the first embodiment.
  • the refrigerator main body 101 includes an internal light 18 on the ceiling surface portion 15 of the inner box 8.
  • the lower surface that is, the surface exposed inside the inner box 8 is referred to as a surface 15a.
  • the interior light 18 is attached to the surface 15a.
  • the interior light 18 includes a bottom plate (not shown) and a cover part 49 attached to form a space between the bottom plate and the bottom plate, and a substrate 46 shown in FIG. is accommodated.
  • the cover portion 49 protrudes into the interior of the inner box 8.
  • the interior light 18 has a rectangular substrate 46, as shown in FIG. 7, for example.
  • the board 46 is attached to the ceiling surface part 15 with the longitudinal direction of the board 46 coinciding with the left-right direction of the inner box 8.
  • a plurality of LEDs (Light Emitting Diodes) 47 for internal lighting are provided at intervals on one surface of the substrate 46, that is, the surface on the inside of the inner box 8.
  • the mounting portion 27 for the interior light 18 has a convex shape in which a portion of the ceiling surface portion 15 of the inner box 8 projects upward.
  • the mounting portion 27 inside the inner box 8 is recessed corresponding to this convex shape, and the board 46 is accommodated in the recessed area.
  • the attachment portion 27 of this embodiment is arranged so that its longitudinal direction coincides with the left-right direction.
  • the wiring 20 connects the control board (not shown) that controls the operation of the refrigerator 100 and the board 46.
  • the wiring 20 is provided on the back surface 15b of the ceiling surface portion 15.
  • the back surface 15b is a surface of the ceiling surface portion 15 opposite to the surface 15a, and is a part of the outer surface of the inner box 8.
  • the wiring 20 passes through a wiring hole 24 provided in the attachment part 27 and extends to the inside of the refrigerator.
  • the wiring 20 is on the side of the refrigerator compartment 1 and extends below the surface of the mounting portion 27 where the wiring hole 24 is provided.
  • a terminal 23 is connected to the end of the wiring 20.
  • the terminal 23 is located below the attachment part 27 and is connected to the board 46.
  • connection terminals 48 are provided on the board 46.
  • the connection terminal 48 is provided on the surface of the board 46 opposite to the surface on which the LED 47 is provided.
  • the terminal 23 of the wiring 20 is connected to the connection terminal 48 .
  • a control board (not shown) supplies power to the LED 47 via the wiring 20.
  • the wiring 20 passes through the wiring hole 24 and is disposed across the inside and outside of the inner box 8.
  • the cover part 49 is fixed to the mounting part 27 with screws (not shown).
  • a mounting portion 27 having a longitudinal direction on the left and right is provided in front of the center in the depth direction of the ceiling surface portion 15 of the inner box 8.
  • the arrangement of the interior light 18 and the attachment part 27 is not limited to this.
  • an example is given in which the interior light 18 is provided on the ceiling surface part 15, but the interior light 18 is provided on the left side surface 14a, the right side surface 14b, the floor surface 16, or the back surface 30 of the inner box 8. It's okay to be beaten.
  • the wiring 20 located on the back surface 15b of the ceiling surface portion 15 of the inner box 8 is arranged along the inner box corner 17 from the back side of the inner box 8 to near the center of the inner box 8 in the front-rear direction (FIG. 6 reference).
  • the wiring 20 goes to the board 46 of the interior light 18.
  • the wiring 80 branches from the middle of the wiring 20.
  • the wiring 80 is connected to a panel 83 provided inside the refrigerator door via a hinge 82 (see FIG. 2).
  • a degassing member 21 having a structure through which carbon dioxide gas passes is attached to the portion of the wiring 20 located in the wiring hole 24 and its surroundings.
  • the degassing member 21 runs the wiring 20 from a part of the wiring 20 protruding into the storage compartment of the refrigerator main body 101, through the wiring hole 24, to a part of the refrigerator main body 101 where gas lock is expected to occur. wrapped around.
  • the wiring 20 is for the interior light 18, the wiring 20 is not limited to this, and the wiring 20 may be a wiring 20 other than the wiring 20 for the interior light 18.
  • the degassing member 21 is, for example, an ether-based flexible urethane foam.
  • FIG. 8 is an enlarged view of the degassing member 21 according to the first embodiment.
  • FIG. 8 shows, as an example, an enlarged view of region D shown in FIG. 13, which will be described later.
  • the degassing member 21 has holes 25 inside thereof that are large enough to allow carbon dioxide gas and air to pass through, but not urethane.
  • the carbon dioxide gas generated during urethane foaming passes from the back surface 15b of the inner box 8 (see FIG. 6) through the holes 25 of the degassing member 21, through the wiring holes 24 formed in the inner box 8, and into the inner box 8. It is distributed to the inside of the refrigerator (refrigerating room 1).
  • the degassing member 21 has 35 or more air bubbles 25 on a straight line of 25 mm.
  • the degassing member 21 is a sponge-like member. With this structure, carbon dioxide gas generated during urethane foaming in the refrigerator body 101 and air inside the refrigerator body 101 can be released from the inner box 8 to the outside.
  • the degassing member 21 is a sheet-like member having a predetermined thickness, one surface of which is an adhesive surface, and is attached to the wiring 20 in a folded manner with the wiring 20 sandwiched therebetween.
  • the degassing member 21 is a tape-shaped member having a predetermined thickness, one surface of which is an adhesive surface, and is attached so as to be wrapped around the wiring 20.
  • the shape of the degassing member 21 is not limited to this, and may be tubular.
  • the gas venting member 21 formed in a tube shape has an opening for wiring formed in the center of the tube. The degassing member 21 may be attached around the wiring 20 by inserting the wiring 20 into the opening.
  • the thickness of the degassing member 21 is, for example, 2 mm to 10 mm. If the thickness of the degassing member 21 is thicker than 10 mm, the degassing member 21 will be removed in the first region 52 between the inner box 8 and a deformed portion 51 of the ceiling vacuum insulation material 41 (see FIG. 11), which will be described later. Compressed.
  • the first region 52 is a region in the internal space 90 where the distance between the inner box 8 and the vacuum insulation material 40 (ceiling vacuum insulation material 41 in FIG. 11) is equal to or less than a predetermined distance. For example, in FIG. 11, in the first region 52, the distance between the inner box 8, the vacuum insulation material 40, and the ceiling vacuum insulation material 41 is 3 mm or less.
  • the second region 53 is a region where the gap between the attachment portion 27 and the ceiling vacuum insulation material 41 is narrow. In the second region 53, the degassing member 21 is compressed. Therefore, the effect of degassing by the degassing member 21 is reduced. If the thickness of the degassing member 21 is thinner than 2 mm, there will be fewer holes 25 for degassing, and a sufficient degassing effect will not be obtained.
  • the thickness of the gas venting member 21 corresponds to the thickness before the gas venting member 21 is attached to the wiring 20, and when the gas venting member 21 is attached to the wiring 20, This corresponds to the thickness of the degassing member 21 around the wiring 20 when the member 21 is not compressed.
  • FIG. 9 is a rear view of the refrigerator main body 101 according to the first embodiment.
  • a side vacuum insulation material 44 is provided between the inner box 8 and the outer box 9 on the left side part 14a and between the inner box 8 and the outer box 9 on the right side part 14b.
  • a ceiling vacuum insulation material 41, a back vacuum insulation material 42, a floor vacuum insulation material 43, and a side vacuum insulation material 44 are attached to the outer box 9 from the inside.
  • the refrigerator main body 101 In the step of filling the refrigerator main body 101 with the urethane foam 60, the refrigerator main body 101 is laid down with the front part 101a (see FIG. 6) in which the storage chamber opening is formed facing downward. Then, the liquid urethane foam material is filled through four injection ports 45a, 45b, 45c, and 45d formed on the back surface 35 of the outer box 9.
  • the liquid urethane foam material is produced by mixing and reacting an isocyanate component with a premix component consisting of a polyol, a foaming agent, a catalyst, and a blowing agent, while foaming the flow path between the inner box 8 and the outer box 9. Filled.
  • the gel time which is the time from when the urethane foam 60 is injected until it hardens, is less than 25 seconds.
  • the foaming ratio when the gel time is reached is set to about 80%.
  • the foamed urethane material flows between the inner box 8 and the outer box 9 while flowing through the gaps between the inner box 8 and the ceiling vacuum insulation material 41, the back vacuum insulation material 42, the floor vacuum insulation material 43, and the side vacuum insulation material 44. Filled.
  • FIG. 10 is a rear perspective view showing the heat radiation pipe 50 and the ceiling vacuum insulation material 41 provided on the ceiling surface portion 15 of the inner box 8 shown in FIG.
  • FIG. 11 is a schematic cross-sectional view of the inner box 8 taken along the line CC shown in FIG. 10 according to the first embodiment. Specifically, FIG. 11 schematically shows a cross section along the straight line indicated by arrow C shown in FIG. 10, as viewed in the direction of arrow C.
  • FIG. 12 is a rear perspective view showing the first region 52 around the ceiling surface portion 15 of the inner box 8 according to the first embodiment. In FIG. 12, the broken line indicates the first region 52.
  • a ceiling vacuum insulation material 41 is placed on the ceiling surface portion 15 of the inner box 8.
  • a heat radiation pipe 50 is arranged in a rectangular shape on the ceiling vacuum insulation material 41.
  • a compressor compresses incoming refrigerant to form high temperature vapor.
  • the hot steam is sent to a condenser.
  • the condenser condenses and liquefies the high temperature steam.
  • the liquefied refrigerant radiates heat through the heat radiation pipe 50, is lowered to a boiling point through an expansion valve, and is then led to a cooler that is an evaporator.
  • the refrigerant evaporates and takes the heat of vaporization from the air around the cooler. Refrigerant leaving the cooler returns to the compressor.
  • the heat dissipation pipe 50 is attached to the inner surface of the outer box 9 and arranged in the internal space 90 between the ceiling vacuum insulation material 41 and the outer box 9.
  • the ceiling vacuum insulation material 41 has a depression 41a formed in the upper surface below the heat radiation pipe 50, and a deformed portion 51 that is convex downward, that is, convex toward the inner box 8. has.
  • the ceiling vacuum insulation material 41 is attached to the outer box 9 with a heat dissipation pipe 50 sandwiched between the deformed portion 51 and the outer box 9. Due to the deformed portion 51 of the ceiling vacuum insulation material 41 and the inner box 8, the interval between the inner box 8 and the ceiling vacuum insulation material 41 is 3 mm or less along the arrangement of the heat radiation pipe 50, which is a narrow area where the interval is narrower than the surrounding area.
  • a first region 52 is formed. As shown in FIG. 12, in this embodiment, the first region 52 is a region that is a combination of a region 52a and a region 52b. The region 52a is formed directly below the heat dissipation pipe 50 (see FIG. 10) arranged in a rectangular shape on the ceiling vacuum insulation material 41.
  • the region 52b is formed directly below the heat radiation pipe 50 (see FIG. 10), which is arranged to extend from the rectangular heat radiation pipe 50 toward the side vacuum insulation material 44.
  • the first region 52 is a region between the deformable portion 51 and the inner box 8 in the internal space 90 .
  • the first region 52 may be arranged along a straight line, a continuous straight line, a curved line, or a combination of two or more of these.
  • a region inside the first region 52 is indicated by a broken line as an inner region 60a in FIG.
  • the ceiling surface portion 15 of the inner box 8 is provided with the mounting portion 27 described with reference to FIGS. 6 and 7.
  • the mounting portion 27 has a ceiling surface portion 15, which is a part of the plate surface constituting the inner box 8, in a shape that is raised upward and is concave with respect to the inside of the inner box 8. It also has a convex shape toward the outer box 9.
  • the mounting portion 27 is provided so as to narrow the length between the inner box 8 and the outer box 9 in the internal space 90.
  • the second area 53 is a narrow area formed in the ceiling surface part 15 by the mounting part 27 and the ceiling vacuum insulation material 41, where the distance between the inner box 8 and the ceiling vacuum insulation material 41 is 3 mm or less, which is narrower than the surrounding area. be.
  • the second region 53 is located inside the rectangular first region 52, that is, in the inner region 60a, and is a region where the distance between the inner box 8 and the ceiling vacuum insulation material 41 is 3 mm or less, which is narrower than the surrounding area. .
  • the ceiling surface part 15 has a first region 52 in which the gap between the inner box 8 and the ceiling vacuum insulation material 41 is 3 mm or less, and a region surrounded by the first region 52, and a space between the inner box 8 and the ceiling vacuum insulation material 41.
  • a second region 53 having a gap of 3 mm or less is formed.
  • the space through which the urethane stock solution flows is narrow, so when the urethane stock solution passes through the first region 52, the flow of the foamed urethane 60 is suppressed.
  • the flow of the urethane foam 60 is suppressed in front of the first region 52.
  • the amount of urethane that reaches the inside of the rectangular first region 52 is limited. Therefore, at the periphery of the inner region 60a of the first region 52, compared to the outside of the first region 52, the generated carbon dioxide gas and air are less likely to be pushed out of the refrigerator by the urethane foam 60, and the carbon dioxide gas and air accumulate. Gas lock is likely to occur due to voids created by Further, in addition to the interior surrounded by the first region 52, gas lock is likely to occur due to voids in a region where the dimension between the inner box 8 and the vacuum heat insulating material 40 is 3 mm or less.
  • the amount of urethane foam 60 that reaches the second region 53 and the peripheral region 60b is further limited.
  • a peripheral region of the second region 53 which is a part of the inner region 60a and is located between the first region 52 and the second region 53 in the traveling direction of the urethane foam 60, is referred to as a peripheral region. This is indicated by a broken line as a region 60b.
  • the liquid urethane foam 60 injected from the back side of the refrigerator main body 101 flows toward the front, but in the direction of movement of the urethane foam 60 in the inner region 60a beyond the first region 52, there is a narrow region called the urethane foam 60.
  • the urethane foam 60 is difficult to flow beyond the second region 53, and the urethane foam 60 is difficult to reach the rear of the second region 53, which is the front side of the second region 53 in the direction of movement of the urethane foam 60. . Furthermore, in addition to the urethane foam 60 flowing from the back side toward the front surface, the urethane foam 60 flowing from the left and right sides of the first region 52 easily reaches the vicinity of the left and right ends of the second region 53 . The urethane foam 60 from the left and right sides of the first area 52 does not easily reach the center of the second area 53 on the left and right sides.
  • the areas where voids are likely to occur are summarized as follows. 1. In the direction of travel of the urethane foam 60, the region beyond the narrow region where the dimension between the inner box 8 or outer box 9 and the vacuum insulation material 40 is 3 mm or less 2. If the narrowed region has a shape that "surrounds" something, whether circular or rectangular, then the enclosed region3. In the traveling direction of the urethane foam when it is filled, the dimension between the inner box 8 or the outer box 9 and the vacuum insulation material 40 becomes 3 mm or less after the urethane foam passes the first constriction area. If there is a second stenosis area, the area on the near side of the second stenosis area.
  • the rectangular first region 52 is illustrated as the narrowing region. In place of the first region 52, for example, if a narrowed region such as a long or dotted region extending transversely to the traveling direction of the urethane foam 60 is provided, the end beyond this narrowed region is the void. Areas where this is likely to occur 1. becomes.
  • FIG. 13 is a cross-sectional view taken along line BB in FIG. Specifically, FIG. 13 schematically shows a cross section along the straight line indicated by arrow B shown in FIG. 6, as viewed in the direction of arrow B. As shown in FIG. 13, a part of the degassing member 21 attached to the wiring 20 is positioned in the wiring hole 24. Moreover, the degassing member 21 is arranged so as to straddle both sides of the wiring hole 24 in the penetrating direction of the wiring hole 24, that is, the internal space 90 and the outside thereof.
  • the degassing member 21 is overlapped with the left and right center portions of the periphery of the attachment portion 27 behind the attachment portion 27, so that the degassing member 21 is placed in the first area where voids are likely to occur. 52 and a rear peripheral area 60b of the second area 53. By doing so, the air and carbon dioxide in the inner region 60a and the peripheral region 60b flow out of the inner space 90 via the degassing member 21.
  • the wiring hole 24, which is a hole through which the wiring 20 passes, is used as a gas vent hole. Since the wiring hole 24 is covered by the substrate 46 and the cover part 49 and is hidden from the storage room side of the refrigerator, the user does not feel that the design is degraded.
  • the wiring hole 24 may be located at a location other than the left and right center portions of the mounting portion 27, and may be provided at a location where the inner box 8 side is covered with a member such as the cover portion 49.
  • the seal 22 for preventing urethane leakage is arranged so as to cover the wiring hole 24 and the gas venting member 21 in the internal space 90. It is attached to the inner box 8.
  • the seal 22 prevents urethane from passing through the wiring hole 24 and leaking to the storage chamber side of the inner box 8 during urethane foaming.
  • the seal 22 does not cover all of the degassing member 21, but covers a part of the degassing member 21. By doing so, the degassing member 21 is closed by the seal 22 and the pores 25 can remain, so that deterioration of the degassing effect is suppressed.
  • a plastic film is used for the seal 22, it is even better if the seal 22 has a structure having holes 25 through which carbon dioxide gas passes, since the carbon dioxide gas can escape more easily to the outside of the refrigerator main body 101.
  • the wiring hole 24 can also be used as a gas vent hole. Therefore, even if it is a place where it is not preferable to form a gas vent hole, if a wiring hole 24 is provided nearby, the gas generated inside the refrigerator main body 101 will pass through the gas venting member 21 wrapped around the wiring 20. Allows carbon dioxide gas to escape outside the body. As a result, it is possible to prevent urethane from being unfilled due to carbon dioxide voids.
  • the locations where it is not preferable to form gas vent holes are locations that are visible to the user and where there are no plans to separately attach components.
  • the wiring hole 24 for the wiring 20 is provided in the refrigerator main body 101, and gas lock may occur in the wiring 20 passing through the wiring hole 24 from the outside of the internal space 90, that is, from the inside of the inner box 8.
  • the degassing member 21 was provided up to the expected target area.
  • the degassing member 21 has holes 25, which serve as a degassing structure, through which carbon dioxide gas passes.
  • the way to wrap the degassing member 21 around the wiring 20 is to place the wiring 20 along the longitudinal direction in the center of the rectangular seal 22, fold the seal 22 with the wiring 20 in between, and glue both ends. be.
  • Another method is to wrap a degassing member 21 with a width of about 10 mm around the wiring 20.
  • the degassing member 21 does not necessarily need to be attached to the wiring 20 so as to cover the entire outer periphery of the wiring 20, and one end of the degassing member 21 is on the storage chamber side, and a gas lock occurs at a part of the other end. It is sufficient if it is attached to the wiring 20 so as to overlap with the area.
  • FIG. 14 is a diagram showing an outer box hole 81 provided in the outer box 9 according to the first embodiment. As shown in FIG. 14, an outer box hole 81 is provided in a region 82a covered by a hinge 82 (see FIG. 2) provided on the upper left side of the front surface of the refrigerator main body 101.
  • the wiring 80 branches from the wiring 20 on the inner box corner 17 (see FIG. 3) formed by the ceiling surface 15 and side surface of the inner box 8.
  • the wiring 80 passes through an outer box hole 81 provided in a region 82a of the outer box 9 covered by the hinge 82, and extends from the inside of the outer box 9 toward the outside space.
  • the wiring 80 passes through the inside of the left door 6 of the refrigerator compartment through a hinge 82 and connects to a panel 83 of the left door 6 of the refrigerator compartment, and a rotary wire provided between the left door 6 of the refrigerator compartment and the right door 7 of the refrigerator compartment. It is connected to a heater (not shown) provided inside the partition to supply power.
  • the wiring 80 is provided with a degassing member 21 and a seal 22 (not shown).
  • the degassing member 21 is provided from the outside space side through the outer box hole 81 to a target area in the vicinity of the first area 52 and the second area 53 inside the refrigerator main body 101. That is, the degassing member 21 provided in the wiring 80 is located across the internal space 90 and the outside of the internal space 90 via the outer box hole 81, which is a wiring hole provided in the outer box 9. .
  • the carbon dioxide gas generated in the internal space 90 passes through the degassing member 21 located in the outer box hole 81 and flows out from the internal space 90 to the outside of the refrigerator main body 101.
  • the degassing member 21 attached to the wiring 20 or the wiring 80 is located inside and outside the wiring hole 24. Therefore, carbon dioxide gas generated when the urethane foam 60 is injected is discharged from the internal space 90 via the degassing member 21. Therefore, there is no need to provide a gas vent hole, and it is possible to provide a refrigerator 100 that can discharge carbon dioxide gas without impairing the design of the refrigerator main body 101.
  • a part of the degassing member 21 is provided in the inner region 60a and the peripheral region 60b, which are the target regions. Therefore, it is possible to provide a refrigerator 100 that suppresses gas lock due to carbon dioxide gas generated inside a place where it is difficult to make a hole due to the design, and suppresses a decrease in insulation performance due to the occurrence of an unfilled area of urethane in the refrigerator main body 101.
  • the inner space 90 includes a seal 22 that covers the wiring hole 24 and is attached to the inner box 8.
  • the seal 22 covers a portion of the degassing member 21. Therefore, the seal 22 prevents urethane from passing through the wiring hole 24 and leaking to the storage chamber side of the inner box 8 during urethane foaming.
  • Embodiment 2 In the second embodiment, compared to the first embodiment, the thickness of the degassing member 21 wound around the wiring 20 around the wiring 20 is different between the connection terminal 48 side and the other side.
  • the degassing member 21 is wound around the wiring 20 with a substantially uniform thickness. In such a configuration, when the outer circumference of the gas venting member 21 is larger than the opening of the wiring hole 24 at the end of the gas venting member 21 provided around the wiring 20, the wiring 20 is inserted into the wiring hole 24. The end of the degassing member 21 collides with the wiring hole 24 when it is inserted into and passed through. Therefore, it may be difficult to pass the wiring 20 through the wiring hole 24.
  • the thickness of the degassing member 21 is adjusted to a certain level at the tip of the degassing member 21. Make it thinner than.
  • the thickness of the degassing member 21 refers to the thickness in the direction along the diameter of the wiring 20.
  • FIG. 15 is a schematic cross-sectional view taken along the line BB shown in FIG. 6 of the inner box 8 according to the second embodiment. Specifically, FIG. 15 schematically shows a cross section along the straight line indicated by arrow B shown in FIG. 6, as viewed in the direction of arrow B.
  • the thickness of a portion 21b of the degassing member 21 in the internal space 90 of the refrigerator main body 101 is T2.
  • the thickness of the portion 21a inside the inner box 8 of the refrigerator main body 101, that is, outside the internal space 90, is T1.
  • Thickness T2 is thicker than thickness T1.
  • the cross-sectional area of the portion 21b of the degassing member 21 in the internal space 90 of the refrigerator main body 101 is greater than or equal to the opening area of the wiring hole 24.
  • the cross-sectional area of the wiring hole 24 and the cross-sectional area of the portion 21a of the degassing member 21 on the outside, which is inside the inner box 8 of the refrigerator main body 101, are less than or equal to the opening area of the wiring hole 24.
  • the other configurations are the same as in FIG. 13.
  • the portion 21a of the degassing member 21 in the internal space 90 of the refrigerator main body 101 can be smoothly inserted into the wiring hole 24. can be passed through. Also, the portion 21b of the internal space 90 of the degassing member 21 comes into contact with the wiring hole 24, and the length of the wiring 20 to be drawn out from the wiring hole 24 is determined, so that the wiring 20 can be attached to the inner box 8. It becomes easier.
  • a portion 21b of the degassing member 21 in the internal space 90 of the refrigerator main body 101 has an internal cavity 25 in a second region 53 (FIG. 11) formed in the gap between the inner box 8 and the ceiling vacuum insulation material 41.
  • the thickness and shape can be freely set as long as they are not crushed by
  • the portion 21b of the degassing member 21 in the internal space 90 of the refrigerator main body 101 may have a shape that extends into a flat plate along the inner box 8 with the wiring 20 interposed therebetween. Thereby, the ability to guide carbon dioxide gas to the outside of the refrigerator during urethane foaming can be enhanced.

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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)
PCT/JP2022/033644 2022-09-08 2022-09-08 冷蔵庫 WO2024053035A1 (ja)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6063765U (ja) * 1983-10-04 1985-05-04 三菱電機株式会社 冷蔵庫
JPS6099487U (ja) * 1983-12-12 1985-07-06 三菱電機株式会社 冷蔵庫
JP2012021665A (ja) * 2010-07-12 2012-02-02 Hitachi Appliances Inc 冷蔵庫
JP2016023890A (ja) * 2014-07-23 2016-02-08 株式会社東芝 冷蔵庫
JP2017089959A (ja) * 2015-11-09 2017-05-25 三菱電機株式会社 冷蔵庫

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6063765U (ja) * 1983-10-04 1985-05-04 三菱電機株式会社 冷蔵庫
JPS6099487U (ja) * 1983-12-12 1985-07-06 三菱電機株式会社 冷蔵庫
JP2012021665A (ja) * 2010-07-12 2012-02-02 Hitachi Appliances Inc 冷蔵庫
JP2016023890A (ja) * 2014-07-23 2016-02-08 株式会社東芝 冷蔵庫
JP2017089959A (ja) * 2015-11-09 2017-05-25 三菱電機株式会社 冷蔵庫

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