WO2020134996A1 - 冰箱及其制造方法 - Google Patents

冰箱及其制造方法 Download PDF

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Publication number
WO2020134996A1
WO2020134996A1 PCT/CN2019/123957 CN2019123957W WO2020134996A1 WO 2020134996 A1 WO2020134996 A1 WO 2020134996A1 CN 2019123957 W CN2019123957 W CN 2019123957W WO 2020134996 A1 WO2020134996 A1 WO 2020134996A1
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WO
WIPO (PCT)
Prior art keywords
box
outer box
heat insulating
insulating material
inner box
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2019/123957
Other languages
English (en)
French (fr)
Inventor
山川贵志
青木均史
土田俊之
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Haier Refrigerator Co Ltd
Haier Smart Home Co Ltd
Aqua Co Ltd
Original Assignee
Qingdao Haier Refrigerator Co Ltd
Haier Smart Home Co Ltd
Aqua Co Ltd
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 Qingdao Haier Refrigerator Co Ltd, Haier Smart Home Co Ltd, Aqua Co Ltd filed Critical Qingdao Haier Refrigerator Co Ltd
Priority to CN201980092983.7A priority Critical patent/CN113614474B/zh
Publication of WO2020134996A1 publication Critical patent/WO2020134996A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • F25D23/06—Walls
    • 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 invention relates to a refrigerator and a manufacturing method thereof, in particular to a refrigerator including a vacuum heat insulating material as a heat insulating material and a manufacturing method thereof.
  • a storage compartment is formed inside a heat-insulating box, and a front opening of the storage compartment is closed by a heat-insulating door so as to be openable and closable.
  • the heat insulation box is composed of an outer box formed of a steel plate, an inner box formed of a synthetic resin plate disposed inside the outer box, and a heat insulation material filled between the outer box and the inner box.
  • foamed polyurethane is used as the heat insulation material filled in the heat insulation box of the refrigerator.
  • a heat insulating material with higher heat insulation than foamed polyurethane is preferable.
  • a vacuum heat insulating material is sometimes used as the heat insulating material built in the heat insulating box.
  • the vacuum heat insulation material is obtained by vacuum packaging fibrous inorganic materials such as glass fibers, and has a heat insulation effect more than ten times that of foamed polyurethane. With this configuration, the storage room can be well insulated from the outside by the vacuum heat insulating material, and the energy required for the cooling operation of the refrigerator can be reduced.
  • FIG. 10A is a horizontal cross-sectional view showing the refrigerator 100
  • FIG. 10B is a perspective view showing the refrigerator 100.
  • the refrigerator 100 includes an outer box 101 and an inner box 102, and a storage room 107 is formed inside the inner box 102.
  • a foam heat insulating material 103 and a vacuum heat insulating material 104 are arranged as heat insulating materials.
  • the vacuum heat insulating material 104 is attached to the inner surface of the outer box 101.
  • a duct 106 for circulating a refrigerant is arranged on the inner surface of the vacuum heat insulating material 104 in accordance with the pipes 106.
  • FIG. 10A shows a case where four grooves 105 are formed in the vacuum heat insulating material 104
  • FIG. 10B shows a case where two grooves 105 are formed.
  • the vacuum heat insulating material is disposed on the outer box side.
  • the surface area is larger than the inner box surface, which is the heat transfer surface in the heat introduction chamber, and there is a problem that the heat insulation effect of the four corners and the like where there is no vacuum heat insulation material cannot be sufficiently exerted.
  • the vacuum heat insulating material 104 needs to be adhered to the inner surface of the outer case 101 using an adhesive.
  • performing the bonding process may increase the manufacturing cost of the refrigerator 100.
  • the duct 106 for heat dissipation is provided on the inner surface of the outer box 101, it is necessary to form the groove 105 for the duct 106 in the vacuum heat insulating material 104, and thus the processing of the vacuum heat insulating material 104 and the manufacture of the refrigerator 100 The cost may become higher.
  • the grooves 105 formed in the vacuum heat insulating material 104 it is difficult to narrow the width between the grooves 105, so the pitch of the pipes 106 cannot be narrowed.
  • the manufacturing method becomes complicated, and further, the manufacturing cost may be rise.
  • the present invention has been made in view of the above facts, and its object is to provide a refrigerator including a vacuum heat insulating material with high heat insulation efficiency and a manufacturing method capable of easily manufacturing the refrigerator.
  • the refrigerator of the present invention includes: a heat-insulating box having a storage compartment formed therein; and a heat-insulating door closing the opening of the storage compartment, the heat-insulating box including an outer box forming the heat-insulating box The outer surface of the body; an inner box, which is arranged inside the outer box; and a heat insulating material, which is arranged between the outer box and the inner box, the outer box includes: an outer box rear panel, It extends along the width direction of the heat insulation box; and an outer box side panel that extends along the depth direction of the heat insulation box, the inner box includes: an inner box rear panel, which extends along the heat insulation box The width of the body extends; and the inner box side panel, which extends in the depth direction of the heat insulation box, the heat insulation material includes: a side vacuum heat insulation material, which is arranged outside the inner box side panel Near the surface; and a foam insulation material, which is foam-filled between the outer box and the inner box, and a spacer is installed at one end of the side vacuum heat
  • a rear vacuum heat insulating material is disposed between the outer box rear panel and the inner box rear panel, and the ends of the rear vacuum heat insulating material are arranged in the width direction It is outside the rear end of the side vacuum insulation material.
  • the spacer includes: a first adhesive surface that is bonded to the outer main surface of the side vacuum heat insulating material; and a second adhesive surface that is vacuum separated from the side surface The end face of the hot material is bonded.
  • the spacer is attached to the side of the side vacuum heat insulating material disposed on the opening side of the storage compartment.
  • the side vacuum heat insulating material is disposed near the side panel of the inner box without using an adhesive material.
  • the method for manufacturing a refrigerator of the present invention includes the following steps: preparing an outer box including an outer box side panel, an inner box including an inner box side panel, and a side vacuum insulation material, the side surface of the side vacuum insulation material in the longitudinal direction A spacer is installed; after arranging the inner box inside the outer box, insert the side vacuum insulation material into the space between the outer box side panel and the inner box side panel, and insert The spacer is disposed at the front end of the space so that the side vacuum insulation material is disposed on the side of the inner box side panel; and the space between the outer box and the inner box is filled Foam insulation material.
  • an injection hole formed in a rear panel of the outer box of the outer box is laid with the outer box and the inner box lying on their sides.
  • a liquid foam insulation material is injected into the space between the outer box and the inner box, and the spacer is separated from the injection hole by 200 mm or more in the horizontal direction.
  • the refrigerator of the present invention includes: a heat-insulating box having a storage compartment formed therein; and a heat-insulating door closing the opening of the storage compartment, the heat-insulating box including an outer box forming the heat-insulating box The outer surface of the body; an inner box, which is arranged inside the outer box; and a heat insulating material, which is arranged between the outer box and the inner box, the outer box includes: an outer box rear panel, It extends along the width direction of the heat insulation box; and an outer box side panel that extends along the depth direction of the heat insulation box, the inner box includes: an inner box rear panel, which extends along the heat insulation box The width of the body extends; and the inner box side panel, which extends in the depth direction of the heat insulation box, the heat insulation material includes: a side vacuum heat insulation material, which is arranged outside the inner box side panel Near the surface; and a foam insulation material, which is foam-filled between the outer box and the inner box, and a spacer is installed at one end of the side vacuum heat
  • the refrigerator according to the present invention includes the vacuum heat insulating material and has high heat insulating efficiency. Specifically, by arranging the side vacuum insulation material substantially in close proximity to the inner box and filling the foam insulation material near the inner surface of the outer box, unnecessary irregularities are not formed in the outer box, and the overall appearance of the refrigerator can be avoided Design decline. In addition, by arranging the spacer between the side vacuum heat insulating material and the outer box side panel, the position of the plate-shaped vacuum heat insulating material can be fixed to exert a predetermined heat insulating function.
  • a rear vacuum heat insulating material is disposed between the outer box rear panel and the inner box rear panel, and the ends of the rear vacuum heat insulating material are arranged in the width direction It is outside the rear end of the side vacuum insulation material.
  • the spacer includes: a first adhesive surface that is bonded to the outer main surface of the side vacuum heat insulating material; and a second adhesive surface that is vacuum separated from the side surface The end face of the hot material is bonded.
  • the spacer is compressed a little between the side vacuum insulation material and the outer box side panel, so that the side vacuum insulation material can be substantially adhered to the outside of the inner box side panel based on its rebound force surface.
  • the spacer is attached to the side of the side vacuum heat insulating material disposed on the opening side of the storage compartment.
  • the side of the side vacuum heat insulating material disposed on the opening side of the storage compartment can be brought close to the inner box side panel.
  • the side vacuum heat insulating material is disposed near the side panel of the inner box without using an adhesive material.
  • the step of applying the adhesive material can be omitted, and the side vacuum heat insulating material can be disposed near the side panel of the inner box without using a special adhesive device.
  • the manufacturing method of the refrigerator of the present invention includes: preparing an outer box including an outer box side panel, an inner box including an inner box side panel, and a side vacuum insulation material with a spacer installed on the side in the longitudinal direction; After the inner box is arranged inside the outer box, insert the side vacuum heat insulating material into the space between the outer box side panel and the inner box side panel, and arrange the space at the front end of the space Pieces, so that the side vacuum insulation material is disposed on the side of the inner box side panel; and the space between the outer box and the inner box is filled with a foam insulation material.
  • the manufacturing method of the refrigerator of the present invention after the inner box is disposed inside the outer box, that is, after the foam heat insulation material can be filled, between the outer box side panel and the inner box side panel
  • the space is equipped with side vacuum insulation materials and filled foam insulation materials. Therefore, it is possible to avoid the occurrence of so-called bursting, which refers to the damage to the outer surface of the side vacuum insulation material and the destruction of the vacuum state.
  • the side vacuum heat insulating material can be arranged at a predetermined position using a spacer, and thus the productivity of the refrigerator can be improved.
  • the side vacuum heat insulating material can be arranged at a predetermined position through the spacer, there is no need for an adhesive device or the like for adhering the side vacuum heat insulating material to the inner box using an adhesive material. Furthermore, since the side vacuum heat insulating material is disposed on the inner box side, it is possible to avoid the formation of an unfilled area that is not filled with foamed heat insulating material near the outer box, and it is possible to improve the overall design of the refrigerator.
  • an injection hole formed in a rear panel of the outer box of the outer box is laid with the outer box and the inner box lying on their sides.
  • a liquid foam insulation material is injected into the space between the outer box and the inner box, and the spacer is separated from the injection hole by 200 mm or more in the horizontal direction.
  • FIG. 1 is a diagram showing a refrigerator according to an embodiment of the present invention, (1A) is a perspective view of the refrigerator viewed from the front, and (1B) is a side sectional view of the refrigerator;
  • (2A) is a perspective view of the outer box viewed from the front
  • (2B) is a perspective view of the inner box viewed from the front;
  • 3 is a view showing a refrigerator according to an embodiment of the present invention
  • (3A) is a perspective view showing a spacer
  • (3B) is a cross-sectional view showing a structure in which a spacer is assembled to a side vacuum heat insulating material
  • (3C) is a view A perspective view of the structure in which the spacer is assembled on the side vacuum insulation material;
  • (4A) is a cross-sectional view of the middle portion of the refrigerator in the vertical direction
  • (4B) and (4C) are enlarged cross-sectional views of (4A);
  • FIG. 5 is a diagram showing a refrigerator according to an embodiment of the present invention, and is a front sectional view of the refrigerator;
  • FIG. 6 is a diagram showing a refrigerator according to an embodiment of the present invention, which is a cross-sectional view of the refrigerator from above;
  • FIG. 7 is a perspective view showing a method of manufacturing a refrigerator according to an embodiment of the present invention.
  • 8 is a diagram showing a method of manufacturing a refrigerator according to an embodiment of the present invention, (8A) to (8C) are cross-sectional views;
  • 9 is a diagram showing a method of manufacturing a refrigerator according to an embodiment of the present invention, (9A) is a side cross-sectional view, (9B) is a cross-sectional view taken along line A-A of (9A);
  • 10 is a diagram showing a refrigerator according to the background art, (10A) is an upper cross-sectional view, and (10B) is a perspective view.
  • the refrigerator 10 according to the embodiment of the present invention will be described in detail based on the drawings.
  • the up-down direction indicates the height direction of the refrigerator 10
  • the left-right direction indicates the width direction of the refrigerator 10
  • the front-back direction indicates the depth direction of the refrigerator 10.
  • the same reference numerals are used for the same members in principle, and redundant descriptions are omitted.
  • FIG. 1A is a perspective view of the refrigerator 10 viewed from the front
  • FIG. 1B is a side cross-sectional view of the refrigerator 10.
  • the refrigerator 10 is formed with a refrigerator compartment 12 and a freezer compartment 13 as storage compartments inside the heat-insulating box 11, the front opening of the refrigerator compartment 12 is closed by a heat insulation door 34, and the front opening of the freezer compartment 13 is The insulated door 35 is closed.
  • the heat insulation door 34 and the heat insulation door 35 are, for example, rotary doors, and the right end thereof is rotatably connected to the heat insulation box 11.
  • a pull-out type door may be used as the heat insulation door 34 and the heat insulation door 35.
  • a cooling compartment 27 is partitioned and an evaporator 26 is housed in the cooling compartment 27.
  • a machine room 14 is partitioned and formed in the rear of the lowermost part of the heat insulation box 11, and a compressor 29 is housed in the machine room 14.
  • the evaporator 26 and the compressor 29 are connected to an expansion unit and a condenser (not shown) via refrigerant piping to form a vapor compression refrigeration cycle.
  • a fan 28 is arranged above the cooling chamber 27, and the fan 28 sends the air inside the cooling chamber 27 cooled by the evaporator 26 to the refrigerator compartment 12 and the freezer compartment 13.
  • a damper 19 is inserted into the air duct of the refrigerator compartment 12.
  • a control device detects an indoor temperature sensor (not shown) of the refrigerator compartment to control the opening and closing of the damper 19.
  • the flow rate of cold air in the refrigerator compartment 12 is adjusted, and the indoor temperature of the refrigerator compartment 12 is kept constant. Therefore, the refrigerating compartment 12 is cooled to the refrigerating temperature range, and the freezing compartment 13 is cooled to the freezing temperature range.
  • the cold air after cooling the refrigerator compartment 12 and the freezer compartment 13 returns to the cooling compartment 27.
  • the flow of cold air is indicated by arrows.
  • a defrost heater 20 is provided for melting frost of the evaporator 26.
  • the heat insulation box 11 is composed of: an outer box 15 which forms the outer shape of the refrigerator 10 and is composed of a steel plate; an inner box 16 which is formed inside the outer box 15 and is composed of a box-shaped synthetic resin plate; and a partition
  • the hot material 17 is filled between the outer box 15 and the inner box 16.
  • the heat insulation material 17 a foam heat insulation material and a vacuum heat insulation material are used.
  • foamed heat insulating material for example, foamed polyurethane is used.
  • the vacuum heat insulating material refers to a product obtained by storing an aggregate of fibers such as glass in a bag and making the inside of the bag vacuum.
  • a side vacuum heat insulating material 22 and a rear vacuum heat insulating material 25 to be described later are used as the vacuum heat insulating material.
  • a rear vacuum heat insulation material 25 is arranged near the back of the heat insulation box 11.
  • the side vacuum heat insulating material 22 and the rear vacuum heat insulating material 25 are plate-shaped vacuum heat insulating materials.
  • FIG. 2A is a perspective view of the outer box 15 viewed from below the front side
  • FIG. 2B is a perspective view of the inner box 16 viewed from below the front side.
  • the outer box 15 includes an outer box rear panel 151 (refer to FIG. 4A) formed by bending a thin steel plate with a thickness of about 0.5 mm, and extends forward from the left-right end of the outer box rear panel 151 The outer box side panel 152, and the outer box upper panel 153 extending forward from the upper end of the outer box rear panel 151.
  • an outer box rear panel 151 (refer to FIG. 4A) formed by bending a thin steel plate with a thickness of about 0.5 mm, and extends forward from the left-right end of the outer box rear panel 151
  • the outer box side panel 152, and the outer box upper panel 153 extending forward from the upper end of the outer box rear panel 151.
  • the outer box side panel 152 and the outer box upper panel 153 are formed by bending a single steel plate into a U shape. 4B, by bending the rear end of the outer box side panel 152 into a groove shape, a groove 154 is formed. Furthermore, the widthwise end of the outer box rear panel 151 is an end 155 bent into an L shape. By inserting the end 155 of the outer box rear panel 151 into the groove 154 of the outer box side panel 152 and performing the foaming process described later, the outer box rear panel 151 and the outer box side panel 152 are joined.
  • a refrigerant pipe 18 is attached via an aluminum tape 32, and a refrigerant used in the vapor compression refrigeration cycle flows through the refrigerant pipe 18.
  • the inner box 16 is composed of a molded body made of synthetic resin vacuum-formed into a given shape.
  • the inner box 16 includes an inner box rear panel 161, an inner box side panel 162 extending forward from the left-right end of the inner box rear panel 161, and an inner box upper panel extending forward from the upper end of the inner box rear panel 161 163, and an inner box lower panel 164 extending forward from the lower end of the inner box rear panel 161.
  • a heat insulation partition wall 33 for partitioning the refrigerator compartment 12 and the freezer compartment 13 is formed in the middle portion of the inner box rear panel 161 in the vertical direction.
  • the thickness of the resin constituting the inner box 16 is preferably 0.5 mm or more and 2.0 mm or less, and more preferably 0.7 mm or more and 1.5 mm or less. By setting the thickness of the inner box 16 within this range, the strength of the inner box 16 can be ensured sufficiently, and the deformation of the inner box 16 can be prevented in the step of filling the foamed resin in the manufacturing process.
  • FIG. 3A is a perspective view showing the spacer 30,
  • FIG. 3B is a cross-sectional view showing a state where the spacer 30 is mounted on the side vacuum heat insulating material 22, and
  • FIG. 3C is an overall view showing a state where the spacer 30 is mounted on the side vacuum heat insulating material 22.
  • the perspective view of the composition is a perspective view showing the spacer 30,
  • FIG. 3B is a cross-sectional view showing a state where the spacer 30 is mounted on the side vacuum heat insulating material 22, and
  • FIG. 3C is an overall view showing a state where the spacer 30 is mounted on the side vacuum heat insulating material 22.
  • the perspective view of the composition is a perspective view showing the spacer 30,
  • FIG. 3B is a cross-sectional view showing a state where the spacer 30 is mounted on the side vacuum heat insulating material 22,
  • FIG. 3C is an overall view showing a state where the spacer 30 is mounted on the side vacuum heat insulating material 22.
  • the spacer 30 has a substantially rectangular parallelepiped shape in which each corner is chamfered.
  • the spacer 30 has a cross-sectional shape obtained by cutting the upper left portion of the paper surface.
  • the spacer 30 is formed with a first adhesive surface 301 and a second adhesive surface 302, the first adhesive surface 301 faces the left side of the paper surface and has a flat surface, and the second adhesive surface 302 and the first adhesive surface 301 crosses vertically and faces a flat surface above the paper surface.
  • the height L1 of the spacer 30 is preferably 10 mm or more and less than 50 mm.
  • the side vacuum heat insulating material 22 can be protected from the end (that is, the end 46) of the outer box side panel 152 .
  • the shape of the end portion 46 shown in FIG. 4C is the same regardless of the presence or absence of the side vacuum heat insulating material 22. Therefore, by setting the height L1 of the spacer 30 to 10 mm or more and less than 50 mm, it is possible to prevent a decrease in productivity.
  • the spacer 30 is composed of a foamed resin material such as foamed polyethylene.
  • a foamed resin material such as foamed polyethylene.
  • the spacer 30 is attached to the lower end of the side vacuum insulation material 22 on the paper surface.
  • the first bonding surface 301 of the spacer 30 is bonded to the lower end of the right side surface of the side vacuum insulation material 22 on the paper surface.
  • the second bonding surface 302 of the spacer 30 is bonded to the right side portion of the lower end surface of the side vacuum heat insulating material 22 on the paper surface.
  • the side vacuum heat insulating material 22 and the spacer 30 are bonded using an adhesive tape or an adhesive.
  • the side vacuum heat insulating material 22 has a substantially rectangular shape elongated in the vertical direction, and a plurality of spacers 30 are attached to the front side.
  • two spacers 30 are attached to the upper end and the lower end.
  • the side vacuum heat insulating material 22 can be positioned more stably and embedded in the heat insulating box 11.
  • the spacer 30 may be disposed on the rear side of the side vacuum insulation material 22 on the paper surface.
  • FIG. 4A is a horizontal cross-sectional view of the refrigerator 10 at an intermediate portion in the up-down direction
  • FIG. 4B is an enlarged cross-sectional view showing an enlarged schematic view of a portion where the gap 42 of FIG. 4A is formed
  • FIG. 4C is a portion where the spacer 30 of FIG. 4A is arranged.
  • FIG. 5 is a front sectional view of the refrigerator 10.
  • the side vacuum heat insulating material 22 is arranged to be substantially in close contact with the inner box side panel 162.
  • the side vacuum heat insulating material 22 continues from the vicinity of the front end of the inner box side panel 162 to the vicinity of the rear end of the inner box side panel 162, and is substantially in close contact with the outer surface of the inner box side panel 162.
  • some gaps may be formed between the outer surface of the inner box side panel 162 and the side vacuum heat insulating material 22.
  • a foam heat insulation material 23 is foamed and filled in the outer portion in the width direction.
  • the rear end of the side vacuum heat insulating material 22 is adhered to the inner box rear panel 161 via an adhesive tape 31.
  • the rear vacuum heat insulating material 25 is disposed on the inner surface of the outer box rear panel 151 and is separated from the inner box rear panel 161. Between the rear vacuum heat insulation material 25 and the inner box rear panel 161, a foam heat insulation material 23 is filled.
  • the width-direction end 41 of the rear vacuum heat insulating material 25 is arranged more outward in the width direction than the rear end 40 of the inner surface of the side vacuum heat insulating material 22. In this way, the gap 42 between the rear end of the side vacuum heat insulating material 22 and the front surface of the rear vacuum heat insulating material 25 can be reduced, the leakage of heat through the gap 42 can be reduced, and the cooling efficiency of the refrigerator 10 can be improved.
  • a spacer 30 is fixed to the front end of the side vacuum insulation material 22, and the spacer 30 is compressed between the side vacuum insulation material 22 and the outer box side panel 152.
  • a rebound force is generated from the compressed spacer 30 to the right (inward in the width direction), and the front end portion of the side vacuum heat insulating material 22 can be pressed against the inner box side panel 162.
  • the side vacuum heat insulating material 22 can be prevented from moving unexpectedly.
  • the outer box joint portion 44 is formed by bending the front end portion of the outer box side panel 152
  • the inner box joint portion 45 is formed by bending the front end portion of the inner box side panel 162.
  • the front end portion of the outer box side panel 152 and the front end portion of the inner box side panel 162 are joined.
  • an end 46 that widens toward the rear is formed at the end of the outer box joint 44.
  • the end portion 46 is an end surface of a steel plate. Therefore, if the end portion 46 is pressed against the side vacuum heat insulating material 22, the outer skin of the side vacuum heat insulating material 22 may be damaged.
  • the spacer 30 disposed at the front end of the side vacuum heat insulating material 22 is in contact with the end portion 46, the side vacuum heat insulating material 22 is not in contact with the end portion 46. This can prevent the side vacuum heat insulating material 22 from being damaged by the end portion 46.
  • FIG. 5 is a front sectional view of the refrigerator 10.
  • the thickness L3 of the heat insulating material 17 covering the freezing compartment 13 is longer than the thickness L2 of the heat insulating material 17 covering the refrigerator compartment 12. In this way, the heat leakage of the freezing compartment 13 cooled to the freezing temperature range can be reduced, and the indoor volume of the refrigerating compartment 12 cooled to the refrigerating temperature range can be ensured to be large.
  • the side vacuum insulation material 22 and the outer surface of the refrigerator compartment 165 are substantially in close contact with each other. Therefore, in principle, there is no foamed heat insulation material 23 between the refrigerator compartment 165 and the side vacuum insulation material 22.
  • a rail portion 49 that guides the storage container or its reinforcement plate is formed to protrude outward in the width direction.
  • the side vacuum heat insulating material 22 abuts on the rail portion 49.
  • the foam heat insulating material 23 is interposed between the side surface of the freezer compartment 166 and the side vacuum heat insulating material 22.
  • a flat surface is formed by the foamed heat insulation material 23 and the rail portion 49 filled between the freezer compartment 166 and the side vacuum heat insulation material 22.
  • the lower portion of the side vacuum heat insulating material 22 is in contact with the flat surface, so that the lower portion of the side vacuum heat insulating material 22 is flat.
  • the upper surface vacuum heat insulating material 24 is arranged on the upper surface of the refrigerator compartment 165.
  • FIG. 6 is a cross-sectional view of the refrigerator 10 from above.
  • the rear end of the side vacuum heat insulating material 22 is arranged behind the rear surface of the inner box rear panel 161. In this case, it is not easy to stick the rear end of the side vacuum heat insulating material 22 to the inner box rear panel 161 via the adhesive tape 31 shown in FIG. 4A.
  • the spacer 30 is also attached to the rear end of the side vacuum heat insulating material 22.
  • the spacer 30 attached to the rear end of the side vacuum insulation material 22 is also compressed between the outer surface of the side vacuum insulation material 22 and the inner surface of the outer box side panel 152.
  • the spacer 30 attached to the rear end of the side vacuum heat insulating material 22 and the spacer 30 attached to the front end of the side vacuum heat insulating material 22 have the same shape. With this arrangement, the rear end of the side vacuum heat insulating material 22 can be pressed against the inner box rear panel 161 side, and the entire side vacuum heat insulating material 22 can be closely attached to the inner box rear panel 161.
  • the design of the refrigerator 10 can be improved. Specifically, since the thermal expansion coefficient of the side vacuum heat insulating material 22 and the thermal expansion coefficient of the foam heat insulating material 23 are different, if the side vacuum heat insulating material 22 is attached to the outer box side panel 152, the following defects may occur Condition: The boundary between the side vacuum insulation material 22 and the foam insulation material 23 appears on the outer surface of the outer box side panel 152 like a step difference. In this embodiment, the boundary between the side vacuum insulation material 22 and the foam insulation 23 is away from the outer box side panel 152, so this boundary does not appear on the outer box side panel 152. Thereby, the design of the side surface of the refrigerator 10 is prevented from being lowered.
  • the side vacuum heat insulating material 22 is substantially in close contact with the outer box side panel 152, it is necessary to prevent air from remaining near the refrigerant piping 18.
  • a countermeasure such as forming a recess corresponding to the refrigerant pipe 18 on the outer surface of the side vacuum heat insulating material 22 is required.
  • the refrigerant piping 18 is embedded in the foam heat insulating material 23, so such a countermeasure is not necessary, the structure of the ice box 10 can be simplified, and the manufacturing cost can be reduced.
  • the side vacuum heat insulating material 22 does not approach the refrigerant piping 18, it is not necessary to form a groove for avoiding the refrigerant piping 18 on the outer surface of the side vacuum heat insulating material 22. That is, a simple flat side vacuum heat insulating material 22 can be used. Thereby, the refrigerant piping 18 is not restricted by the groove formed in the side vacuum heat insulating material 22, and therefore the refrigerant piping 18 can be arranged relatively freely.
  • FIGS. 7 to 9 The manufacturing method of the refrigerator 10 including the above structure will be described based on FIGS. 7 to 9 and further referring to the above-mentioned figures.
  • 7 is a perspective view showing a step of inserting the inner box 16 into the outer box 15.
  • FIG. 8 is a cross-sectional view sequentially showing a step of inserting the side vacuum heat insulating material 22 into the space 43 between the outer box 15 and the inner box 16.
  • FIG. 9 is a diagram showing a step of filling the space 43 with the liquid foam insulation 38.
  • the inner box 16 is embedded in the outer box 15.
  • the inner box 16 is fitted into the outer box 15 in a state where the outer box rear panel 151 shown in FIG. 4A is not attached.
  • the side vacuum heat insulating material 22 to which the spacer 30 shown in FIG. 3C is attached is also prepared.
  • FIG. 8A, 8B, and 8C are cross-sectional views sequentially showing a process of inserting the side vacuum heat insulating material 22 into the space 43 between the outer box 15 and the inner box 16.
  • a space 43 is formed between the outer box side panel 152 of the outer box 15 and the inner box side panel 162 of the inner box 16.
  • the cross section of the space 43 has a tapered shape with a narrower width in the left-right direction toward the front.
  • the side vacuum heat insulating material 22 is inserted into the space 43.
  • the side vacuum insulation material 22 is inserted into the space 43 with the side where the spacer 30 is provided as a lower end.
  • the spacer 30 is compressed between the outer side surface of the side vacuum heat insulating material 22 and the inner side surface of the outer box side panel 152. This situation is shown in Fig. 4C.
  • the spacer 30 has a substantially rectangular parallelepiped shape with chamfered corners. Thereby, the side vacuum heat insulating material 22 to which the spacer 30 of this shape is attached can be inserted well into the space 43 formed between the inner box side panel 162 and the outer box side panel 152.
  • the outer box rear panel 151 to which the rear vacuum heat insulating material 25 is pasted is fitted into the upper end of the outer box side panel 152.
  • FIG. 9A is a side cross-sectional view showing a filling step of foaming and filling the foam heat insulating material 23 between the inner box 16 and the outer box 15.
  • FIG. 9B is a diagram showing the filling step, and is a cross-sectional view taken along line A-A of FIG. 9A.
  • an injection hole 36 and an injection hole 37 are formed in the outer box rear panel 151.
  • the injection hole 36 is a hole portion for injecting the liquid foam heat insulation material 381
  • the injection hole 37 is a hole portion for injecting the liquid foam heat insulation material 382.
  • the foam insulation material 23 is foamed and filled with the inner box 16 and the outer box 15 lying on their sides so that the opening of the storage room faces downward.
  • a plurality of spacers 30 are provided on the lower surface of the side vacuum heat insulating material 22, and here, the spacer 30 arranged on the left side on the paper surface is referred to as a spacer 303, and is arranged on the right
  • the square spacer 30 is called a spacer 304.
  • the liquid foam heat insulating material 381 is injected from the injection hole 36, and at the same time, the liquid foam heat insulating material 382 is injected from the injection hole 37.
  • the liquid foamed heat insulating material 381 injected from the injection hole 36 reaches the front end of the space 43 via the space 43 between the side vacuum heat insulating material 22 and the outer box side panel 152. Thereafter, the injected liquid foamed heat insulating material 381 is filled between the outer box 15 and the inner box 16 while foaming.
  • a space 47 is formed in front of the side vacuum heat insulating material 22, and the space 47 becomes a path through which the liquid foam heat insulating material 381 flows.
  • FIG. 9A the paths through which the liquid foamed heat insulating material 381 and the liquid foamed heat insulating material 382 flow are indicated by arrows, and finally filled up to the central region 48.
  • the foam insulation 23 is filled between the outer box 15 and the inner box 16.
  • the horizontal distance L4 between the injection hole 36 and the spacer 303 is preferably 200 mm or more.
  • the horizontal distance L4 refers to the distance in which the injection hole 36 and the spacer 303 are separated in the horizontal direction when the outer box 15 and the inner box 16 lie horizontally.
  • the horizontal distance L4 is the distance from the right end on the paper surface of the injection hole 36 to the left end on the paper surface of the spacer 303.
  • the liquid foamed heat insulating material 381 reaches the spacer 303 while expanding and foaming to a certain degree in a liquid state, so the liquid foamed heat insulating material 381 can easily cross the spacer 303 and face the paper surface The right flows well.
  • the liquid foam insulation 381 will be blocked by the spacer 303, so referring to FIG. 9B, the liquid foam insulation 381 will enter the inner box side panel 162 and the side vacuum insulation 22 In between, the inner box side panel 162 has irregularities.
  • the horizontal distance L4 is 200 mm or more, it is possible to prevent the inner box side panel 162 from being uneven.
  • the height L5 of the spacer 303 is preferably 50 mm or less, and more preferably 40 mm or less. In this way, the liquid foamed heat insulating material 381 can easily flow over the spacer 303.
  • the spacer 304 is arranged on the right side of the paper plane with respect to the injection hole 37. With this arrangement, the liquid foam heat insulating material 382 injected from the injection hole 37 can be blocked by the spacer 304 so that it flows toward the region 48. As a result, a sufficient amount of liquid foam heat insulating material 382 can reach the area 48.
  • the height L6 of the spacer 304 is the same as that of the spacer 303, and is preferably 50 mm or less, and more preferably 40 mm or less.
  • the spacer 303 and the spacer 304 are substantially rectangular parallelepiped shapes obtained by chamfering each corner.
  • the spacer 303 and the spacer 304 do not hinder the flow of the liquid foamed heat insulating material 381 and the liquid foamed heat insulating material 382.
  • the liquid foamed heat insulating material 381 and the liquid foamed heat insulating material 382 reach between the inner box 16 and the outer box 15 to fill the foamed heat insulating material 23 as shown in FIG. 4A. Thereafter, as shown in FIG. 1, the heat insulation door 34, the heat insulation door 35, and each structural member are attached to the heat insulation box 11, thereby manufacturing the refrigerator 10.
  • the side vacuum heat insulating material 22 can be embedded in the heat insulation box 11 while preventing the side vacuum heat insulating material 22 from being damaged.
  • the side vacuum heat insulating material 22 is composed of vacuum-packed glass and other fibers. Therefore, if the side vacuum insulation material 22 comes into contact with a sharp member during the manufacturing process, the vacuum packaging of the side vacuum insulation material 22 may be damaged, and the side vacuum insulation material 22 may be damaged. In the present embodiment, the installation of the side vacuum heat insulating material 22 is completed only by inserting the side vacuum heat insulating material 22 into the space 43, and therefore, the side vacuum heat insulating material 22 is less likely to break due to contact with other members.
  • the operator when the side vacuum heat insulating material 22 is inserted with reference to FIG. 8B, the operator only needs to align the side vacuum heat insulating material 22 in the vertical direction. This eliminates the need for equipment for attaching the side vacuum heat insulating material 22 to the inner box side panel 162, which not only improves productivity, but also reduces manufacturing costs.
  • the side vacuum heat insulating material 22 is inserted from above into the space 43 formed between the outer box side panel 152 and the inner box side panel 162.
  • the spacer 30 disposed at the lower end of the side vacuum insulation material 22 is compressed between the side vacuum insulation material 22 and the outer box side panel 152, and the lower end of the side vacuum insulation material 22 is pressed against the inner box side panel The outer surface of 162. This makes it possible to easily arrange the side vacuum heat insulating material 22 on the side of the inner box 16 inside the space 43 without using special dedicated equipment.
  • the position and size of the spacer 303 are set to a range that does not hinder the flow of the liquid foamed heat insulating material 381 .
  • the liquid foamed heat insulating material 381 can flow well, and the formation of an unfilled area inside the heat insulating box 11 can be avoided.
  • the side vacuum heat insulating material 22 is disposed on the side of the inner box side panel 162, so a sufficient space 43 is ensured between the side vacuum heat insulating material 22 and the outer box side panel 152. .
  • the liquid foam heat insulating material 381 can be stably foam-filled into the space 43.

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Abstract

一种冰箱（10）及其制造方法，在冰箱（10）内箱侧面板（162）外表面布设侧面真空隔热材（22），发泡隔热材（23）发泡填充于内箱（16）与外箱（15）之间。间隔件（30）配置于侧面真空隔热材（22）的一端与外箱侧面板（152）之间。通过侧面真空隔热材（22）对贮藏室与外部适当地隔热，实现节能。

Description

冰箱及其制造方法 技术领域
本发明涉及一种冰箱及其制造方法，尤其涉及一种包括真空隔热材作为隔热材的冰箱及其制造方法。
背景技术
在一般的冰箱中，在隔热箱体的内部形成贮藏室，并利用隔热门以能开闭的方式封闭该贮藏室的前方开口。隔热箱体由如下构成：由钢板形成的外箱、配置于外箱的内侧且由合成树脂板形成的内箱、以及填充于外箱与内箱之间的隔热材。
一般采用发泡聚氨酯作为填充于冰箱的隔热箱体的隔热材。然而，为了应对冰箱的进一步的节能化，优选隔热性高于发泡聚氨酯的隔热材。
为此，存在采用真空隔热材来作为内置于隔热箱体的隔热材的情况。真空隔热材是将玻璃纤维等纤维状无机材料进行真空包装而得到的，具有发泡聚氨酯的十几倍以上的隔热效果。通过设为该构成，能通过真空隔热材将贮藏室与外部良好地隔热，能降低冰箱的冷却运行所需的能量。
参照图10来说明采用了真空隔热材的冰箱100的结构。图10A是表示冰箱100的水平剖视图，图10B是表示冰箱100的立体图。
参照图10A以及图10B，冰箱100包括外箱101以及内箱102，在内箱102的内部形成有贮藏室107。另外，在外箱101与内箱102之间，配置有发泡隔热材103以及真空隔热材104作为隔热材。真空隔热材104粘贴于外箱101的内表面。另外，在外箱101的内表面，配设有供冷媒流通的管道106。由此，在真空隔热材104的外表面，按管道106而形成有槽105。在图10A中示出在真空隔热材104形成有4个槽105的情况，在图10B中示出形成有2个槽105的情况。
(发明要解决的问题)
然而，关于上述冰箱，无论从冰箱的隔热的角度出发，还是从冰箱的制造方法的角度出发，都存在改善的余地。
具体而言，在日本第4111096号公报的专利文献记载的冰箱中，真空隔热材配置于外箱侧。由此，表面积大于热导入室内的传热面即内箱面，存在如下问题：无法充分发挥四个角落等没有真空隔热材的部分的隔热效果。
另外，在制造工序中，需要使用粘接剂将真空隔热材104粘贴于外箱101的内表面，但进行粘接工序有可能导致冰箱100的制造成本上升。
进而，由于在外箱101的内表面设置用于散热的管道106，因此需要在真空隔热材104形成 用于设置管道106的槽105，由此，真空隔热材104的加工、冰箱100的制造成本有可能变高。另外，关于形成于真空隔热材104的槽105，难以缩窄槽105彼此间的宽度，因此无法缩窄管道106的间距。
进而，另外，在将发泡隔热材103进行发泡填充的工序中，为了防止在外箱101产生凹凸，需要在槽105配置排气通道。这会导致制造工序的复杂化，造成制造成本上升。
另外，在将真空隔热材安装于外箱等后，若将外箱与内箱进行组合，则在组装作业中真空隔热材的包装有可能会破损。进而，若意图将真空隔热材粘贴于外箱或者内箱，则需要用于此的粘接剂涂敷装置、真空隔热材粘贴装置等，制造方法变得复杂，进而，制造成本有可能上升。
发明内容
本发明鉴于上述事实而提出，其目的在于，提供包括真空隔热材的隔热效率高的冰箱以及能容易地制造该冰箱的制造方法。
(用于解决问题的技术方案)
本发明的冰箱包括：隔热箱体，其在内部形成有贮藏室；以及隔热门，其封闭所述贮藏室的开口，所述隔热箱体包括：外箱，其形成所述隔热箱体的外表面；内箱，其配设于所述外箱的内部；以及隔热材，其配置于所述外箱与所述内箱之间，所述外箱包括：外箱后面板，其沿所述隔热箱体的宽度方向延伸；以及外箱侧面板，其沿所述隔热箱体的进深方向延伸，所述内箱包括：内箱后面板，其沿所述隔热箱体的宽度方向延伸；以及内箱侧面板，其沿所述隔热箱体的进深方向延伸，所述隔热材包括：侧面真空隔热材，其配设于所述内箱侧面板的外表面的附近；以及发泡隔热材，其发泡填充于所述外箱与所述内箱之间，在所述侧面真空隔热材的一端安装有间隔件，所述间隔件配置于所述侧面真空隔热材与所述外箱侧面板之间。
另外，关于本发明的冰箱，在所述外箱后面板与所述内箱后面板之间配设有后面真空隔热材，在宽度方向上，所述后面真空隔热材的端部配置得比所述侧面真空隔热材的后端靠外侧。
另外，关于本发明的冰箱，所述间隔件包括：第一粘接面，其与所述侧面真空隔热材的外侧主面粘接；以及第二粘接面，其与所述侧面真空隔热材的端面粘接。
另外，关于本发明的冰箱，所述间隔件安装于配置于所述贮藏室的所述开口那侧的所述侧面真空隔热材的侧边。
另外，关于本发明的冰箱，所述侧面真空隔热材不使用粘接材而配置于所述内箱侧面板的附近。
本发明的冰箱的制造方法包括以下工序：准备包括外箱侧面板的外箱、包括内箱侧面板的内箱、以及侧面真空隔热材，所述侧面真空隔热材在长边方向的侧面安装有间隔件；在将所述内箱 配置于所述外箱的内部后，向所述外箱侧面板与所述内箱侧面板之间的空间插入所述侧面真空隔热材，并在所述空间的前端配置所述间隔件，从而在所述内箱侧面板的那侧配设所述侧面真空隔热材；以及在所述外箱与所述内箱之间的所述空间填充发泡隔热材。
另外，关于本发明的冰箱的制造方法，在所述填充工序中，在使所述外箱以及所述内箱横卧的状态下，从在所述外箱的外箱后面板形成的注入孔向所述外箱与所述内箱之间的所述空间注入液状发泡隔热材，在水平方向上，使所述间隔件距离所述注入孔200mm以上。
(发明效果)
本发明的冰箱包括：隔热箱体，其在内部形成有贮藏室；以及隔热门，其封闭所述贮藏室的开口，所述隔热箱体包括：外箱，其形成所述隔热箱体的外表面；内箱，其配设于所述外箱的内部；以及隔热材，其配置于所述外箱与所述内箱之间，所述外箱包括：外箱后面板，其沿所述隔热箱体的宽度方向延伸；以及外箱侧面板，其沿所述隔热箱体的进深方向延伸，所述内箱包括：内箱后面板，其沿所述隔热箱体的宽度方向延伸；以及内箱侧面板，其沿所述隔热箱体的进深方向延伸，所述隔热材包括：侧面真空隔热材，其配设于所述内箱侧面板的外表面的附近；以及发泡隔热材，其发泡填充于所述外箱与所述内箱之间，在所述侧面真空隔热材的一端安装有间隔件，所述间隔件配置于所述侧面真空隔热材与所述外箱侧面板之间。由此，根据本发明的冰箱，包括真空隔热材且隔热效率高。具体而言，通过将侧面真空隔热材大致紧贴内箱进行配置，在外箱的内表面附近填充发泡隔热材，从而不会在外箱形成不需要的凹凸部分，能避免冰箱整体的外观设计性的下降。另外，通过将间隔件配置于侧面真空隔热材与外箱侧面板之间，能使板状真空隔热材的位置固定以发挥给定的隔热功能。
另外，关于本发明的冰箱，在所述外箱后面板与所述内箱后面板之间配设有后面真空隔热材，在宽度方向上，所述后面真空隔热材的端部配置得比所述侧面真空隔热材的后端靠外侧。由此，根据本发明的冰箱，能减小侧面真空隔热材与后面真空隔热材的间隙，能减小在该间隙发生的热泄漏。
另外，关于本发明的冰箱，所述间隔件包括：第一粘接面，其与所述侧面真空隔热材的外侧主面粘接；以及第二粘接面，其与所述侧面真空隔热材的端面粘接。由此，根据本发明的冰箱，间隔件在侧面真空隔热材与外箱侧面板之间被压缩一些，从而能基于其反弹力使侧面真空隔热材大致紧贴至内箱侧面板的外表面。
另外，关于本发明的冰箱，所述间隔件安装于配置于所述贮藏室的所述开口那侧的所述侧面真空隔热材的侧边。由此，根据本发明的冰箱，能使配置于贮藏室的开口侧的侧面真空隔热材的侧边接近内箱侧面板。
另外，关于本发明的冰箱，所述侧面真空隔热材不使用粘接材而配置于所述内箱侧面板的附近。由此，根据本发明的冰箱，能省去涂敷粘接材的工序，不必使用特殊的粘接装置而将侧面真空隔热材配置于内箱侧面板的附近。
本发明的冰箱的制造方法包括：准备包括外箱侧面板的外箱、包括内箱侧面板的内箱、以及在长边方向的侧面安装有间隔件的侧面真空隔热材；在将所述内箱配置于所述外箱的内部后，向所述外箱侧面板与所述内箱侧面板之间的空间插入所述侧面真空隔热材，并在所述空间的前端配置所述间隔件，从而在所述内箱侧面板的那侧配设所述侧面真空隔热材；以及在所述外箱与所述内箱之间的所述空间填充发泡隔热材。由此，根据本发明的冰箱的制造方法，在将内箱配置于外箱的内部后，即，在成为能填充发泡隔热材的状态后，在外箱侧面板与内箱侧面板之间的空间配设侧面真空隔热材、填充发泡隔热材。因此，能避免所谓胀破的发生，胀破是指因对侧面真空隔热材的外表面造成伤害而导致破坏真空状态。进而，通过向外箱侧面板与内箱侧面板之间的空间插入侧面真空隔热材，从而能使用间隔件将侧面真空隔热材配设于给定位置，因此能提高冰箱的生产率。另外，由于通过间隔件能将侧面真空隔热材配设于给定位置，因此不需要用于将侧面真空隔热材采用粘接材粘贴至内箱的粘贴设备等。进而，由于侧面真空隔热材配置于内箱侧，因此将避免在外箱的附近形成未填充发泡隔热材的部分即未填充区域，能提高冰箱整体的外观设计性。
另外，关于本发明的冰箱的制造方法，在所述填充工序中，在使所述外箱以及所述内箱横卧的状态下，从在所述外箱的外箱后面板形成的注入孔向所述外箱与所述内箱之间的所述空间注入液状发泡隔热材，在水平方向上，使所述间隔件距离所述注入孔200mm以上。由此，根据本发明的冰箱的制造方法，通过使间隔件距离注入孔200mm以上，能避免从注入孔注入的液状发泡隔热材的流动被间隔件所阻碍，能在内箱与外箱之间良好地填充发泡隔热材。
附图说明
图1是表示本发明的实施方式所涉及的冰箱的图，(1A)是从前方观察冰箱的立体图，(1B)是冰箱的侧面剖视图；
图2是表示本发明的实施方式所涉及的冰箱的图，(2A)是从前方观察外箱的立体图，(2B)是从前方观察内箱的立体图；
图3是表示本发明的实施方式所涉及的冰箱的图，(3A)是表示间隔件的立体图，(3B)是表示间隔件组装于侧面真空隔热材的结构的剖视图，(3C)是表示间隔件组装于侧面真空隔热材的结构的立体图；
图4是表示本发明的实施方式所涉及的冰箱的图，(4A)是冰箱的上下方向中间部的剖视图， (4B)以及(4C)是(4A)的放大剖视图；
图5是表示本发明的实施方式所涉及的冰箱的图，是冰箱的前方剖视图；
图6是表示本发明的实施方式所涉及的冰箱的图，是冰箱的上方剖视图；
图7是表示本发明的实施方式所涉及的冰箱的制造方法的立体图；
图8是表示本发明的实施方式所涉及的冰箱的制造方法的图，(8A)至(8C)是剖视图；
图9是表示本发明的实施方式所涉及的冰箱的制造方法的图，(9A)是侧方剖视图，(9B)是(9A)的切断面线A-A处的剖视图；
图10是表示背景技术所涉及的冰箱的图，(10A)是上方剖视图，(10B)是立体图。
标号说明：
10，冰箱；11，隔热箱体；12，冷藏室；13，冷冻室；14，机械室；15，外箱；151，外箱后面板；152，外箱侧面板；153，外箱上面板；154，槽；155，端部；16，内箱；161，内箱后面板；162，内箱侧面板；163，内箱上面板；164内箱下面板；165，冷藏室内箱；166，冷冻室内箱；17，隔热材；18，冷媒配管；19，风门；20，除霜加热器；22，侧面真空隔热材；23，发泡隔热材；25，后面真空隔热材；26，蒸发器；27，冷却室；28，风机；29，压缩机；30，间隔件；301，第一粘接面；302，第二粘接面；303，间隔件；304，间隔件；31，粘接胶带；32，铝带；33，隔热分隔壁；24，上面真空隔热材；34，隔热门；35，隔热门；36，注入孔；37，注入孔；38，液状发泡隔热材；381，液状发泡隔热材；382，液状发泡隔热材；40，端部；41，端部；42，间隙；43，空间；44，外箱接合部；45，内箱接合部；46，端部；47，空间；48，区域；49，导轨部；100，冰箱；101，外箱；102，内箱；103，发泡隔热材；104，真空隔热材；105，槽；106，管道；107，贮藏室
具体实施方式
以下，基于附图来详细说明本发明的实施方式所涉及的冰箱10。此外，在以下的说明中，上下方向表示冰箱10的高度方向，左右方向表示冰箱10的宽度方向，前后方向表示冰箱10的进深方向。另外，在本实施方式的说明时，对同一构件原则上使用同一标号，并省略重复的说明。
参照图1来说明冰箱10的概略构成。图1A是从前方观察冰箱10的立体图，图1B是冰箱10的侧方剖视图。
参照图1A以及图1B，冰箱10在隔热箱体11的内部形成有作为贮藏室的冷藏室12以及冷冻室13，冷藏室12的前面开口被隔热门34封闭，冷冻室13的前面开口被隔热门35封闭。隔热门34以及隔热门35例如是旋转式的门，其右侧的端部可旋转地连接于隔热箱体11。作为隔热门34以及隔热门35，还可以采用拉出式的门。
如图1B所示，在冷冻室13的后方，分隔形成有冷却室27，在冷却室27收纳有蒸发器26。另外，在隔热箱体11的最下部后方，分隔形成有机械室14，在机械室14收纳有压缩机29。蒸发器26以及压缩机29经由冷媒配管与未图示的膨胀单元以及冷凝器连接，形成了蒸气压缩制冷循环。
在冷却室27的上部配设有风机28，风机28将经蒸发器26冷却后的冷却室27内部的空气送至冷藏室12以及冷冻室13。在向冷藏室12的风道中插入安装有风门19。在此未图示的控制装置探测冷藏室的未图示的室内温度传感器，以控制风门19的开闭。由此，调整到冷藏室12的冷气流量，并将冷藏室12的室内温度保持恒定。因此，冷藏室12被冷却至冷藏温度范围，冷冻室13被冷却至冷冻温度范围。另外，对冷藏室12以及冷冻室13进行了冷却后的冷气返回至冷却室27。在图1B中，以箭头表示了冷气的流动。另外，在蒸发器26的下方，配设有除霜加热器20，用于将蒸发器26的结霜进行融化。
隔热箱体11由如下构成：外箱15，其形成冰箱10的外形，并由钢板构成；内箱16，其形成于外箱15的内侧，并由箱形的合成树脂板构成；以及隔热材17，其填充于外箱15与内箱16之间。
隔热材17采用发泡隔热材以及真空隔热材。发泡隔热材例如采用发泡聚氨酯。真空隔热材是指，将玻璃等纤维的集合体收纳至袋中并使该袋的内部成为真空状态后的产物。在本实施方式中，真空隔热材采用后述的侧面真空隔热材22以及后面真空隔热材25。在图1B中，在隔热箱体11的背部附近配设有后面真空隔热材25。侧面真空隔热材22以及后面真空隔热材25是呈板状的真空隔热材。
参照图2来说明外箱15以及内箱16的构成。图2A是从前侧下方观察外箱15的立体图，图2B是从前侧下方观察内箱16的立体图。
参照图2A，外箱15包括：将厚度为0.5mm左右的薄钢板进行弯折加工而成的外箱后面板151(参照图4A)、从外箱后面板151的左右方向端部朝前方延伸的外箱侧面板152、以及从外箱后面板151的上方端部朝前方延伸的外箱上面板153。
外箱侧面板152和外箱上面板153是将一片钢板弯曲为U字状而形成的。另外，参照图4B，通过将外箱侧面板152的后端弯折为槽形状，从而形成有槽154。进而，将外箱后面板151的宽度方向端部设为弯折加工成L字状的端部155。通过将外箱后面板151的端部155插入至外箱侧面板152的槽154内，并进行后述的发泡工序，从而将外箱后面板151与外箱侧面板152进行接合。
另外，在外箱侧面板152以及外箱上面板153的内表面，通过铝带32粘贴有冷媒配管18， 该冷媒配管18内流通有在蒸气压缩制冷循环中使用的冷媒。
参照图2B，内箱16由真空成形为给定形状的合成树脂制成的成形体组成。内箱16包括：内箱后面板161、从内箱后面板161的左右方向端部朝前方延伸的内箱侧面板162、从内箱后面板161的上方端部朝前方延伸的内箱上面板163、以及从内箱后面板161的下端朝前方延伸的内箱下面板164。另外，在内箱后面板161的上下方向上的中间部，形成有用于对冷藏室12与冷冻室13进行分隔的隔热分隔壁33。
构成内箱16的树脂的厚度优选为0.5mm以上且2.0mm以下，进一步地优选为0.7mm以上且1.5mm以下。通过将内箱16的厚度设为该范围，能确保内箱16的强度充分大，在制造工艺的填充发泡树脂的工序中，能防止内箱16变形。
参照图3来说明侧面真空隔热材22及限制其位置的间隔件30。图3A是表示间隔件30的立体图，图3B是表示在侧面真空隔热材22安装有间隔件30的状态剖视图，图3C是表示在侧面真空隔热材22安装有间隔件30的状态的整体构成的立体图。
参照图3A，间隔件30呈将各角部经倒角而成的大致长方体形状。在从图3A的纸面前方观察间隔件30的情况下，间隔件30呈将纸面左侧上方的部分切取后的截面形状。间隔件30，形成有：第一粘接面301、以及第二粘接面302，第一粘接面301面向纸面左方而呈平坦面，第二粘接面302与第一粘接面301垂直交叉且面向纸面上方而呈平坦面。
间隔件30的高度L1优选为10mm以上且小于50mm。通过将间隔件30的高度L1设为10mm以上，从而如参照图4C所在后描述那样，能保护侧面真空隔热材22不受外箱侧面板152的端部(也即端部46)的损害。另外，不管有无侧面真空隔热材22，图4C所示的端部46的形状均是相同的，因此通过将间隔件30的高度L1设为10mm以上且小于50mm，能防止生产率下降。
间隔件30由发泡聚乙烯等发泡树脂材料组成。通过采用发泡树脂材料作为间隔件30，从而在参照图8A将间隔件30插入后述的空间43时，间隔件30会适度压缩变形，此时通过从间隔件30产生的反弹力，能将侧面真空隔热材22压贴至内箱侧面板162。
参照图3B，间隔件30安装于侧面真空隔热材22的纸面下端。具体而言，间隔件30的第一粘接面301与侧面真空隔热材22的纸面右方侧面的下端粘接。另外，间隔件30的第二粘接面302与侧面真空隔热材22的纸面下端面的右侧部分粘接。侧面真空隔热材22与间隔件30使用粘接胶带或者粘接剂进行粘接。
参照图3C，侧面真空隔热材22呈在上下方向上较长的大致矩形形状，在前方侧边安装有多个间隔件30。在此，在侧面真空隔热材22的前方侧边，在上方端部以及下方端部安装有2个间隔件30。通过在侧面真空隔热材22安装多个间隔件30，能将侧面真空隔热材22更稳定地定位 而嵌入至隔热箱体11。另外，参照图6如后所述，间隔件30可以配置于侧面真空隔热材22的纸面上的后方侧边。
参照图4以及图5来说明冰箱10的截面构成。图4A是上下方向的中间部处的冰箱10的水平剖视图，图4B是将形成有图4A的间隙42的部分进行放大示意的放大剖视图，图4C是将配置有图4A的间隔件30的部分进行放大示意的放大剖视图。图5是冰箱10的前方剖视图。
参照图4A，在内箱侧面板162与外箱侧面板152之间的空间43中，侧面真空隔热材22布设为与内箱侧面板162大致紧贴。侧面真空隔热材22从内箱侧面板162的前端附近起连续至内箱侧面板162的后端附近，与内箱侧面板162的外表面大致紧贴。在此，在内箱侧面板162的外表面与侧面真空隔热材22之间，可以形成一些间隙。
在内箱侧面板162与外箱侧面板152之间的空间43中，在宽度方向上的外侧部分，发泡填充有发泡隔热材23。另外，侧面真空隔热材22的后端经由粘接胶带31而粘贴至内箱后面板161。
参照图4B，后面真空隔热材25配设于外箱后面板151的内表面，与内箱后面板161分离。在后面真空隔热材25与内箱后面板161之间，填充有发泡隔热材23。
后面真空隔热材25的宽度方向的端部41配置得比侧面真空隔热材22的内表面的后侧的端部40在宽度方向上靠外侧。如此，能减小侧面真空隔热材22的后端与后面真空隔热材25的前表面的间隙42，能减小热经由间隙42的泄漏，提高冰箱10的冷却效率。
参照图4C，在侧面真空隔热材22的前端固定有间隔件30，间隔件30在侧面真空隔热材22与外箱侧面板152之间被压缩。通过设为该结构，从被压缩的间隔件30朝右方(宽度方向内侧)产生反弹力，能将侧面真空隔热材22的前端部压贴至内箱侧面板162。由此，在制造工序中对发泡隔热材23进行发泡填充时，能防止侧面真空隔热材22无预期地移动。
通过对外箱侧面板152的前端部进行弯折加工而形成有外箱接合部44，通过对内箱侧面板162的前端部进行弯折加工而形成有内箱接合部45。另外，通过将内箱接合部45嵌合至外箱接合部44，从而将外箱侧面板152的前端部与内箱侧面板162的前端部进行了接合。
在此，在外箱接合部44的端部，为了使内箱接合部45的嵌合容易，形成有朝后方变宽的端部46。端部46是钢板的端面，因此若端部46被压贴至侧面真空隔热材22，则侧面真空隔热材22的外皮有可能破损。在本实施方式中，配置于侧面真空隔热材22的前端的间隔件30与端部46相接，因此侧面真空隔热材22不会与端部46相接。由此，能防止侧面真空隔热材22因端部46而破损。
间隔件30与端部46相接，因此在侧面真空隔热材22的前方形成空间47。由此，在冰箱10的制造工序中，在空间43发泡填充发泡隔热材23的工序中，经由空间47，使后述的液状发泡 隔热材38良好地流动。
图5是冰箱10的前方剖视图。参照该图，覆盖冷冻室13的隔热材17的厚度L3比覆盖冷藏室12的隔热材17的厚度L2更长。如此，能减少冷却至冷冻温度范围的冷冻室13的热泄漏，并且，能确保冷却至冷藏温度范围的冷藏室12的室内容积较大。
在此，侧面真空隔热材22与冷藏室内箱165的外表面大致紧贴，因此在冷藏室内箱165与侧面真空隔热材22之间，原则上不存在发泡隔热材23。
在冷冻室内箱166的外侧面，对收纳容器进行导向的导轨部49或者其加强板以朝宽度方向的外侧突出的方式形成。由此，在形成有导轨部49的部分，侧面真空隔热材22与导轨部49抵接。
另一方面，在未形成导轨部49的部分，发泡隔热材23介于冷冻室内箱166的侧面与侧面真空隔热材22之间。通过该结构，由填充于冷冻室内箱166与侧面真空隔热材22之间的发泡隔热材23、以及导轨部49，来形成平坦面。侧面真空隔热材22的下部与该平坦面抵接，从而侧面真空隔热材22的下部平坦。此外，在冷藏室内箱165的上表面配设有上面真空隔热材24。
参照图6来说明其他实施方式所涉及的冰箱10。图6是冰箱10的上方剖视图。
在此，侧面真空隔热材22的后端配置于比内箱后面板161的后表面靠后方。在该情况下，并不容易经由图4A所示的粘接胶带31将侧面真空隔热材22的后端粘贴至内箱后面板161。
故而，还在侧面真空隔热材22的后端安装有间隔件30。安装于侧面真空隔热材22的后端的间隔件30也在侧面真空隔热材22的外表面与外箱侧面板152的内表面之间被压缩。另外，安装于侧面真空隔热材22的后端的间隔件30与安装于侧面真空隔热材22的前端的间隔件30具有相同的形状。通过这样设置，能将侧面真空隔热材22的后端压贴至内箱后面板161侧，并使侧面真空隔热材22整体紧贴至内箱后面板161。
在本实施方式中，通过将侧面真空隔热材22配置于宽度方向的内侧，能提高冰箱10的外观设计性。具体而言，由于侧面真空隔热材22的热膨胀率与发泡隔热材23的热膨胀率是不同的，因此若将侧面真空隔热材22粘贴于外箱侧面板152，则可能出现如下不良状况：侧面真空隔热材22与发泡隔热材23的边界像台阶差一样出现在外箱侧面板152的外表面。在本实施方式中，侧面真空隔热材22与发泡隔热材23的边界是远离外箱侧面板152的，因此该边界不会出现在外箱侧面板152。由此，防止了冰箱10的侧面的外观设计性的下降。
假设使侧面真空隔热材22与外箱侧面板152大致紧贴，则需要在冷媒配管18的附近不能残留空气的对策。例如，需要在侧面真空隔热材22的外侧面形成与冷媒配管18对应的凹部那样的对策。在本实施方式中，冷媒配管18埋设于发泡隔热材23，因此不需要这样的对策，能简化冰 箱10的结构，降低制造成本。
进一步地，根据本实施方式，参照图4A，由于侧面真空隔热材22不接近冷媒配管18，因此无需在侧面真空隔热材22的外表面形成用于避开冷媒配管18的槽。即，能采用简单的平板状的侧面真空隔热材22。由此，冷媒配管18不受形成于侧面真空隔热材22的槽的限制，因此能较自由地配设冷媒配管18。
基于图7至图9，进而参照上述各图，来说明包括上述结构的冰箱10的制造方法。图7是表示在外箱15嵌入内箱16的工序的立体图。图8是依次表示将侧面真空隔热材22插入至外箱15与内箱16之间的空间43的工序的剖视图。图9是表示将液状发泡隔热材38填充至空间43的工序的图。
首先，参照图7的立体图，将内箱16嵌入外箱15的内部。在此，在未安装有图4A所示的外箱后面板151的状态下的外箱15中嵌入内箱16。进而，还准备安装有图3C所示的间隔件30的侧面真空隔热材22。
接下来，参照图8来进行侧面真空隔热材22的嵌入。图8A、图8B以及图8C是逐次表示将侧面真空隔热材22插入外箱15与内箱16之间的空间43中的工序的剖视图。
参照图8A，若在外箱15的内部配置内箱16，则在外箱15的外箱侧面板152与内箱16的内箱侧面板162之间形成空间43。空间43的截面呈左右方向上的宽度越往前方越窄的锥形形状。
参照图8B，接下来，在上述空间43中插入侧面真空隔热材22。具体而言，以设置有间隔件30的侧边为下端，将侧面真空隔热材22插入至空间43。若将侧面真空隔热材22的下端插入至空间43的下端，则间隔件30在侧面真空隔热材22的外侧面与外箱侧面板152的内侧面之间被压缩。该状况如图4C所示。
间隔件30如图3A所示，是将各角部进行倒角而成的大致长方体形状。由此，能将安装有该形状的间隔件30的侧面真空隔热材22很好地插入至在内箱侧面板162与外箱侧面板152之间形成的空间43中。
参照图8C，在侧面真空隔热材22的插入工序结束后，将粘贴有后面真空隔热材25的外箱后面板151嵌入外箱侧面板152的上端。
参照图9，接下来，在上述内箱16与外箱15之间对发泡隔热材23进行发泡填充。图9A是表示在内箱16与外箱15之间对发泡隔热材23进行发泡填充的填充工序的侧方剖视图。图9B是表示该填充工序的图，是在图9A的切断面线A-A处的剖视图。
参照图9A，在外箱后面板151形成有注入孔36以及注入孔37。注入孔36是用于注入液状发泡隔热材381的孔部，注入孔37是用于注入液状发泡隔热材382的孔部。在此，以使贮藏室 的开口朝向下方的方式，在使内箱16以及外箱15横卧的状态下进行发泡隔热材23的发泡填充。
如图9A所示，在侧面真空隔热材22的下表面设置有多个间隔件30，在此，将在纸面上配置于左方的间隔件30称为间隔件303，将配置于右方的间隔件30称为间隔件304。
在本工序中，从注入孔36注入液状发泡隔热材381，同时，从注入孔37注入液状发泡隔热材382。
参照图9B，从注入孔36注入的液状发泡隔热材381经由侧面真空隔热材22与外箱侧面板152之间的空间43而到达空间43的前端。其后，所注入的液状发泡隔热材381一边发泡一边填充至外箱15与内箱16之间。另外，在侧面真空隔热材22的前方形成有空间47，空间47成为液状发泡隔热材381所流通的路径。在图9A中，以箭头来表示液状发泡隔热材381以及液状发泡隔热材382所流动的路径，最终至中央区域48为止进行填充。若本工序结束，则如图4A等所示，在外箱15与内箱16之间填充发泡隔热材23。
如图9A所示，在本工序中，注入孔36与间隔件303的水平距离L4优选为200mm以上。在此，水平距离L4是指，在外箱15以及内箱16横卧的状态下，注入孔36与间隔件303在水平方向上分离的距离。换言之，水平距离L4是从注入孔36的纸面上的右方端部开始直到间隔件303的纸面上的左方端部为止的距离。通过如此设定水平距离L4，液状发泡隔热材381一边以一定程度液状的状态扩展发泡一边到达间隔件303，因此液状发泡隔热材381能容易越过间隔件303而朝着纸面右方良好地流动。
若不充分确保该水平距离L4，则液状发泡隔热材381会被间隔件303阻挡，因此参照图9B，液状发泡隔热材381会进入内箱侧面板162与侧面真空隔热材22之间，在内箱侧面板162产生凹凸。在本实施方式中，通过将水平距离L4确保为200mm以上，能防止在内箱侧面板162产生凹凸。
另外，间隔件303的高度L5优选为50mm以下，进而优选为40mm以下。如此，能使液状发泡隔热材381容易越过间隔件303而流动。
间隔件304配置得比注入孔37靠纸面右方侧。通过这样设置，能将从注入孔37注入的液状发泡隔热材382以间隔件304进行阻挡，从而使其朝区域48流动。由此，能使足够多的液状发泡隔热材382到达区域48。间隔件304的高度L6与间隔件303同样，优选为50mm以下，更优选为40mm以下。
进而，间隔件303以及间隔件304如图3A所示，是将各角部进行倒角而成的大致长方体形状。由此，间隔件303以及间隔件304不会阻碍液状发泡隔热材381以及液状发泡隔热材382的流动。
通过上述工序，使液状发泡隔热材381以及液状发泡隔热材382到达内箱16与外箱15之间，从而如图4A所示来填充发泡隔热材23。其后，如图1所示，将隔热门34、隔热门35以及各结构件安装于隔热箱体11，从而制造出冰箱10。
在本实施方式中，能在防止侧面真空隔热材22的破损的同时，将侧面真空隔热材22嵌入隔热箱体11。侧面真空隔热材22由经真空包装的玻璃等纤维组成。由此，若在制造工序中侧面真空隔热材22与锐利的构件接触，则侧面真空隔热材22的真空包装会破损，侧面真空隔热材22有可能破损。在本实施方式中，仅通过将侧面真空隔热材22插入空间43就完成侧面真空隔热材22的安装，因此侧面真空隔热材22与其他构件接触而发生破损的可能性小。
另外，在本实施方式中，参照图8B来进行侧面真空隔热材22的嵌入时，作业人员仅进行侧面真空隔热材22的上下方向上的对位即可。由此，无需用于将侧面真空隔热材22粘贴于内箱侧面板162的设备，不仅能提高生产率，而且能降低制造成本。
进而，如图8B所示，在本实施方式中，将侧面真空隔热材22从上方插入至在外箱侧面板152与内箱侧面板162之间形成的空间43。如此，配置于侧面真空隔热材22的下端的间隔件30在侧面真空隔热材22与外箱侧面板152之间被压缩，侧面真空隔热材22的下端被压贴至内箱侧面板162的外表面。由此，能在不使用特殊的专用设备的前提下，在空间43的内部，容易地将侧面真空隔热材22配置于内箱16的那侧。
进而，另外，在本实施方式中，在将液状发泡隔热材381进行发泡填充的工序中，将间隔件303的位置以及大小设为不妨碍液状发泡隔热材381的流动的范围。由此，能使液状发泡隔热材381良好地流动，能避免在隔热箱体11的内部形成未填充区域。
进而在本实施方式中，参照图9B，侧面真空隔热材22配置于内箱侧面板162的那侧，因此在侧面真空隔热材22与外箱侧面板152之间确保了充分的空间43。由此，在发泡填充工序中，能稳定地向空间43中发泡填充液状发泡隔热材381。
本发明不限于上述实施方式，此外，能在不脱离本发明的主旨的范围内进行各种变更实施。

Claims (10)

  1. 一种冰箱，其特征在于，包括：
    隔热箱体，其在内部形成有贮藏室；以及隔热门，其封闭所述贮藏室的开口；
    所述隔热箱体包括：外箱，其形成所述隔热箱体的外表面；内箱，其配设于所述外箱的内部；以及隔热材，其配置于所述外箱与所述内箱之间；
    所述外箱包括：外箱后面板，其沿所述隔热箱体的宽度方向延伸；以及外箱侧面板，其沿所述隔热箱体的进深方向延伸；
    所述内箱包括：内箱后面板，其沿所述隔热箱体的宽度方向延伸；以及内箱侧面板，其沿所述隔热箱体的进深方向延伸；
    所述隔热材包括：侧面真空隔热材，其配设于所述内箱侧面板的外表面的附近；以及发泡隔热材，其发泡填充于所述外箱与所述内箱之间，
    在所述侧面真空隔热材的一端安装有间隔件，所述间隔件配置于所述侧面真空隔热材与所述外箱侧面板之间。
  2. 根据权利要求1所述的冰箱，其特征在于，
    在所述外箱后面板与所述内箱后面板之间布设有后面真空隔热材，
    在宽度方向上，所述后面真空隔热材的端部配置得比所述侧面真空隔热材的后端靠外侧。
  3. 根据权利要求1或2所述的冰箱，其特征在于，
    所述间隔件包括：第一粘接面，其与所述侧面真空隔热材的外侧主面粘接；以及第二粘接面，其与所述侧面真空隔热材的端面粘接。
  4. 根据权利要求1至2中任一项所述的冰箱，其特征在于，
    所述间隔件安装于配置于所述贮藏室的所述开口的那侧的所述侧面真空隔热材的侧边。
  5. 根据权利要求1至2中任一项所述的冰箱，其特征在于，
    所述侧面真空隔热材不使用粘接材而配置于所述内箱侧面板的附近。
  6. 根据权利要求4所述的冰箱，其特征在于，所述外箱侧面板的前端部形成有外箱接合部，所述内箱侧面板的前端部形成有内箱接合部，所述内箱接合部嵌合至所述外箱接合部；
    所述间隔件与所述外箱接合部的端部相接。
  7. 根据权利要求1所述的冰箱，其特征在于，所述侧面真空隔热材与所述外箱侧面板之间填充有所述发泡隔热材；
    所述外箱侧面板的内表面粘贴有冷媒配管，所述冷媒配管埋设于所述发泡隔热材。
  8. 根据权利要求1所述的冰箱，其特征在于，所述侧面真空隔热材的后端配置于比所述内箱后面板的后表面靠后方，所述间隔件安装于所述侧面真空隔热材的后端。
  9. 一种冰箱的制造方法，其特征在于，包括以下工序：
    准备包括外箱侧面板的外箱、包括内箱侧面板的内箱、以及侧面真空隔热材，所述侧面真空隔热材在长边方向的侧面安装有间隔件；
    在将所述内箱配置于所述外箱的内部后，向所述外箱侧面板与所述内箱侧面板之间的空间插入所述侧面真空隔热材，并在所述空间的前端布设所述间隔件，从而在所述内箱侧面板的那侧配设所述侧面真空隔热材；以及
    在所述外箱与所述内箱之间的所述空间填充发泡隔热材。
  10. 根据权利要求9所述的冰箱的制造方法，其特征在于，
    在填充所述发泡隔热材的工序中，在使所述外箱以及所述内箱横卧的状态下，从在所述外箱的外箱后面板形成的注入孔向所述外箱与所述内箱之间的所述空间注入液状发泡隔热材，
    在水平方向上，使所述间隔件距离所述注入孔200mm以上。
PCT/CN2019/123957 2018-12-27 2019-12-09 冰箱及其制造方法 Ceased WO2020134996A1 (zh)

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