CN111189277A - Refrigerator with a door - Google Patents
Refrigerator with a door Download PDFInfo
- Publication number
- CN111189277A CN111189277A CN202010034507.4A CN202010034507A CN111189277A CN 111189277 A CN111189277 A CN 111189277A CN 202010034507 A CN202010034507 A CN 202010034507A CN 111189277 A CN111189277 A CN 111189277A
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- Prior art keywords
- heat insulating
- insulating material
- storage
- box
- wall
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- 238000009413 insulation Methods 0.000 claims abstract description 111
- 239000011810 insulating material Substances 0.000 claims abstract description 109
- 239000006260 foam Substances 0.000 claims description 109
- 239000012774 insulation material Substances 0.000 claims description 10
- 230000005855 radiation Effects 0.000 claims description 6
- 238000007710 freezing Methods 0.000 description 67
- 230000008014 freezing Effects 0.000 description 67
- 230000003014 reinforcing effect Effects 0.000 description 35
- 238000005192 partition Methods 0.000 description 21
- 235000013311 vegetables Nutrition 0.000 description 18
- 239000007788 liquid Substances 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 238000002347 injection Methods 0.000 description 10
- 239000007924 injection Substances 0.000 description 10
- 239000000853 adhesive Substances 0.000 description 9
- 230000001070 adhesive effect Effects 0.000 description 9
- 238000000465 moulding Methods 0.000 description 9
- 238000010257 thawing Methods 0.000 description 9
- 229920003002 synthetic resin Polymers 0.000 description 7
- 239000000057 synthetic resin Substances 0.000 description 7
- 239000002184 metal Substances 0.000 description 6
- 238000007664 blowing Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 5
- 235000013305 food Nutrition 0.000 description 5
- 239000012212 insulator Substances 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 5
- 210000000078 claw Anatomy 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 238000009429 electrical wiring Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000011550 stock solution Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Refrigerator Housings (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
The invention provides a refrigerator, which is provided with a heat insulation wall with a thickness corresponding to a storage temperature zone of a storage chamber, and has stable heat insulation performance. The refrigerator of the present embodiment includes a heat insulating box having a plurality of storage compartments having different storage temperature zones, and the heat insulating material constituting the heat insulating wall of the heat insulating box uses a vacuum heat insulating panel. The thickness of the heat insulation wall corresponding to the storage chamber with a high storage temperature zone in the storage chamber is different from the thickness of the heat insulation wall corresponding to the storage chamber with a low storage temperature zone.
Description
The present application is a divisional application of an invention patent application having an application number of 2015100678160, an application date of 2015, 2, 9 and an invention name of "refrigerator".
Technical Field
The present embodiment of the invention relates to a refrigerator.
Background
For example, in the case of a household refrigerator, a storage compartment having a refrigerating temperature zone and a storage compartment having a freezing temperature zone are generally provided. In the heat insulating box of a refrigerator, a foam heat insulating material made of foam polyurethane is used as a heat insulating material of a heat insulating wall, and a vacuum heat insulating panel having superior heat insulating performance to the foam heat insulating material is used.
Prior art documents
Patent document
Patent document 1: japanese patent laid-open publication No. 2014-6039
Disclosure of Invention
In the heat insulating wall constituting the heat insulating box, the thickness of the rear wall as, for example, a storage compartment is basically: the same applies regardless of the portion corresponding to the storage compartment of the refrigerated temperature zone or the portion corresponding to the storage compartment of the frozen temperature zone. Therefore, there is a problem that the heat insulating performance required for the heat insulating wall cannot be secured or the thickness exceeds a required thickness.
Accordingly, the present invention provides a refrigerator including a heat insulating box having a plurality of storage compartments having different storage temperature zones, and a heat insulating material constituting a heat insulating wall of the heat insulating box using a vacuum heat insulating panel, wherein the refrigerator has a heat insulating wall having a thickness corresponding to the storage temperature zone of the storage compartment, and has stable heat insulating performance.
A refrigerator according to claim 1 of the present invention includes a heat insulating box having a plurality of storage compartments having different storage temperature zones, and a heat insulating material constituting a heat insulating wall of the heat insulating box uses a vacuum heat insulating panel. The thickness of the heat insulation wall corresponding to the storage chamber with a high storage temperature zone in the storage chamber is different from the thickness of the heat insulation wall corresponding to the storage chamber with a low storage temperature zone.
According to the above configuration, since the thickness of the heat insulating wall corresponding to the storage chamber having a high storage temperature zone is different from the thickness of the heat insulating wall corresponding to the storage chamber having a low storage temperature zone, the refrigerator of the present invention has the heat insulating wall having the thickness corresponding to the storage temperature zone of the storage chamber, and the heat insulating performance is stable.
A refrigerator according to claim 2 of the present invention is the refrigerator according to claim 1, wherein a foam heat insulating material is used as the heat insulating material of the heat insulating wall, and the thickness of the heat insulating wall is different between a portion where the foam heat insulating material is present and a portion where the foam heat insulating material is absent.
The refrigerator according to claim 3 of the present invention is the refrigerator according to claim 2, wherein the heat insulating wall is only used for the heat insulating wall of the storage chamber having a high storage temperature zone in the storage chamber, without using a foam heat insulating material or a portion having a small amount of heat insulating material.
The refrigerator according to claim 4 of the present invention is the refrigerator according to claim 2 or 3, wherein the heat insulating material in the heat insulating wall is not a foam heat insulating material or a part with a small amount of heat insulating material is used only for the rear wall of the storage room.
A refrigerator according to claim 5 of the present invention is the refrigerator according to any one of claims 1 to 4, wherein a thin plate is provided between the inner panel on the storage chamber side and the vacuum insulation panel in a portion of the insulation wall where no foam insulation material is used.
A refrigerator according to claim 6 of the present invention is the refrigerator according to any one of claims 1 to 5, wherein a convex portion for attaching a component protruding toward the storage compartment is provided on an inner panel existing on the storage compartment side in the heat-insulated box.
A refrigerator according to claim 7 of the present invention is the refrigerator according to any one of claims 2 to 6, wherein the heat-insulating box body is provided with air vents at narrow portions where the foamed heat-insulating material present on the inner panel on the storage compartment side enters and at portions where the foamed heat-insulating material ends, and the air vents are closed by a thin plate.
A refrigerator according to claim 8 of the present invention is the refrigerator according to any one of claims 1 to 7, wherein a convex portion protruding toward a storage compartment side is provided on an inner panel existing on the storage compartment side in the heat-insulated box, and the convex portion is located around the vacuum heat-insulating panel.
A refrigerator according to claim 9 of the present invention is the refrigerator according to any one of claims 1 to 8, wherein a convex portion protruding toward the storage compartment side is provided on an inner panel existing on the storage compartment side in the heat-insulated box, and a concave portion surrounded by the convex portion is used as a cold air duct.
A refrigerator according to claim 10 of the present invention is the refrigerator according to any one of claims 1 to 9, wherein a depth dimension of the storage chamber having a high storage temperature zone is longer than a depth dimension of the storage chamber having a low storage temperature zone.
The refrigerator according to claim 11 of the present invention is the refrigerator according to any one of claims 1 to 10, wherein the cold air flowing through the cold air duct does not flow to a portion where the vacuum insulation panel does not exist, in the cold air duct formed inside the heat insulation box.
A refrigerator according to claim 12 of the present invention is the refrigerator according to any one of claims 2 to 11, wherein an inclined portion is provided in the inner panel on the storage compartment side of the heat insulating box so as to be positioned at a boundary portion between a portion of the heat insulating wall where the foamed heat insulating material is present and a portion where the foamed heat insulating material is absent.
A refrigerator according to claim 13 of the present invention is the refrigerator according to any one of claims 2 to 12, wherein a thin plate for preventing penetration of a foam heat insulating material is provided between the inner panel on the storage compartment side and the vacuum heat insulating panel at a boundary portion between a portion of the heat insulating wall of the heat insulating box where the foam heat insulating material is present and a portion where the foam heat insulating material is not present.
A refrigerator according to claim 14 of the present invention is the refrigerator according to any one of claims 1 to 13, wherein an inner plate of the heat-insulating box on the storage compartment side has a reinforcing molded portion.
A refrigerator according to claim 15 of the present invention is the refrigerator according to claim 14, further comprising a cover covering the reinforcing molding part.
A refrigerator according to claim 16 of the present invention is the refrigerator according to any one of claims 1 to 15, wherein the inner panel of the heat insulating wall of the heat insulating box body on the storage compartment side and the vacuum heat insulating panel are bonded to each other by an adhesive.
A refrigerator according to claim 17 of the present invention is the refrigerator according to any one of claims 1 to 15, wherein a portion of the heat insulating wall of the heat insulating box, which is present between the inner panel on the storage compartment side and the vacuum heat insulating panel and is not bonded with an adhesive, is covered with a cover from the storage compartment side.
The refrigerator according to claim 18 of the present invention is the refrigerator according to any one of claims 2 to 17, wherein the foam heat insulating material is provided so as to surround the periphery of the vacuum heat insulating panel.
A refrigerator according to claim 19 of the present invention is the refrigerator according to any one of claims 2 to 18, wherein the foam heat insulating material is thick at the corner of the heat insulating box.
The refrigerator according to claim 20 of the present invention is the refrigerator according to any one of claims 2 to 19, wherein the foam heat insulating material overlaps the vacuum heat insulating panel in a thick portion of the heat insulating box.
A refrigerator according to claim 21 of the present invention is the refrigerator according to any one of claims 1 to 20, wherein an electric wiring storage box for storing electric wiring is provided at a corner portion of the heat insulating box.
The refrigerator according to claim 22 of the present invention is the refrigerator according to any one of claims 1 to 21, wherein a heat radiation pipe is disposed at a step portion formed on the vacuum insulation panel.
A refrigerator according to claim 23 of the present invention is the refrigerator according to any one of claims 2 to 22, wherein a chamfered portion is provided in the heat insulating box on the inner panel on the storage compartment side, the chamfered portion guiding the raw liquid of the foamed heat insulating material to the side wall of the heat insulating box when the raw liquid is poured.
A refrigerator according to claim 24 of the present invention is the refrigerator according to any one of claims 2 to 23, wherein a guide member having a guide surface for guiding the raw liquid to a side wall of the heat insulating box is provided in the heat insulating box at a position corresponding to an injection target of the inlet for injecting the raw liquid of the foamed heat insulating material.
A refrigerator according to claim 25 of the present invention is the refrigerator according to any one of claims 1 to 24, wherein an angle of the inner panel on the storage compartment side is different from an angle of the outer panel on the opposite side of the storage compartment at a corner of the heat-insulating box.
A refrigerator according to claim 26 of the present invention is the refrigerator according to claim 25, wherein an angle of the inner panel is formed to be gentler than an angle of the outer panel at a corner of the heat insulating box.
A refrigerator according to claim 27 of the present invention is the refrigerator according to claim 23 or 24, wherein an injection port for injecting a raw liquid of a foamed heat insulating material is formed in a vicinity of a corner portion of the outer panel of the heat insulating box.
A refrigerator according to claim 28 of the present invention is the refrigerator according to any one of claims 25 to 27, wherein an outer side of a corner portion of the outer panel of the heat insulating box is formed flat, and the flat portion is bolt-fastened.
A refrigerator according to claim 29 of the present invention is the refrigerator according to any one of claims 1 to 28, wherein a soft tape is provided at a connecting portion where an inner panel on a storage compartment side of the heat-insulating box and an outer panel on an opposite side of the storage compartment are connected.
A refrigerator according to claim 30 of the present invention is the refrigerator according to any one of claims 1 to 29, wherein a metal reinforcing plate is fixed to a metal bottom plate of an outer plate constituting a bottom portion of the heat insulating box by spot welding.
A refrigerator according to claim 31 of the present invention is the refrigerator according to any one of claims 1 to 30, further comprising a reinforcing plate provided at a rear portion of the storage compartment having a low storage temperature zone in the storage compartment, and a drain tube for receiving defrosting water of a cooler, wherein the reinforcing plate is fixed to the drain tube by being engaged with the drain tube.
A refrigerator according to claim 32 of the present invention is the refrigerator according to any one of claims 1 to 31, further comprising a drain tube for receiving defrosted water of the cooler, and the drain tube is fixed to left and right side walls of the heat insulating box by fixing portions.
Drawings
Fig. 1 is a schematic longitudinal sectional side view of a refrigerator according to an embodiment.
FIG. 2 is a front view of the insulated box.
FIG. 3 is a rear view of the insulated box.
FIG. 4 is a longitudinal cross-sectional side view of the insulated box.
Fig. 5 is a perspective view of the heat insulation box as viewed from the bottom surface side of the back.
FIG. 6 is a cross-sectional top view taken along line X6-X6 of FIG. 2.
FIG. 7 is a cross-sectional top view taken along line X7-X7 of FIG. 2.
FIG. 8 is a cross-sectional top view taken along line X8-X8 of FIG. 2.
FIG. 9 is an enlarged transverse cut-away top view of the refrigerated compartment portion.
Fig. 10 is an enlarged transverse cross-sectional top view of the freezing chamber portion.
Fig. 11 is an enlarged sectional view of the portion Y11 of fig. 4.
Fig. 12 is a perspective view of a vacuum insulation panel for a rear wall.
Fig. 13 is an enlarged sectional view of the portion Y13 of fig. 4.
Fig. 14 is a transverse sectional plan view of the vicinity of the electric wiring storage box.
Fig. 15 is a perspective view from the front side of the single electrical wiring housing box.
Fig. 16 is a perspective view of the bottom plate and the reinforcing plate.
Fig. 17 is a perspective view seen from the front side of the inner box.
Fig. 18 is a perspective view seen from the back side of the inner box.
Fig. 19 is a cross sectional plan view of a fixing portion of the drain cylinder.
Fig. 20 is a longitudinal sectional side view showing a mounting portion of a reinforcing plate for a freezing chamber.
Fig. 21 is a longitudinal sectional side view showing a method of mounting a reinforcing plate for a freezing chamber.
Description of the symbols:
1-heat insulation box body, 2-outer box (outer plate), 3-inner box (inner plate), 4-refrigerating chamber (storage chamber of refrigerating temperature zone), 5-vegetable chamber (storage chamber of refrigerating temperature zone), 6-ice making chamber (storage chamber of freezing temperature zone), 7-small freezing chamber (storage chamber of freezing temperature zone), 8-main freezing chamber (storage chamber of freezing temperature zone), 15-heat insulation partition wall, 20-cooler for refrigerating, 21-cooler for freezing, 26-cold air pipeline, 32-pipeline cover (cover), 39-drainage cylinder, 41-control device, 43-left side wall, 44-right side wall, 45-top wall, 46-bottom wall, 47-rear wall, 47 a-rear wall for refrigerating temperature zone, 47 b-rear wall for freezing temperature zone, 50-bolt, 53-left side plate, 54-right side plate, 55-top plate, 56-bottom plate, 57-back plate, 58-reinforcing plate, 59-side reinforcing plate, 60-inlet, 63-left side plate, 64-right side plate, 65-top plate, 66-bottom plate, 67-back plate, 68-middle partition, 70-vacuum insulation panel, 71-foam insulation material, 72, 73, 74, 75-vacuum insulation panel, 76 a-chamfer, 77-guide member, 77 a-guide surface, 78-chamfer, 79-member mounting projection, 80-projection, 81-air vent, 82-sheet, 83-reinforcing forming portion, 84-sheet, 85-inclined portion, 86-sheet, 87 a-step portion, 87 b-groove portion, 88-heat pipe, 89-groove portion, 90-tray supporting projection, 91-reinforcing molding portion, 93-electrical wiring storage box, 94-fixing portion, 98-reinforcing plate, 99-fixing portion, 100-engaging claw, 103-soft tape
Detailed Description
Hereinafter, a refrigerator according to an embodiment will be described with reference to the drawings.
First, as shown in fig. 1, a heat-insulated box 1 of a refrigerator is constituted by a heat-insulated wall in which a heat-insulating material is provided in a space between an outer box 2 made of a steel plate and an inner box 3 made of a synthetic resin, and a plurality of storage compartments are provided therein, and the detailed configuration will be described later. Specifically, refrigerating room 4 and vegetable room 5 are provided from the upper layer, ice making room 6 and small freezing room 7 (see fig. 2) are provided side by side below the refrigerating room, and main freezing room 8 is provided below the freezing room. An automatic ice making device 9 is provided in the ice making chamber 6.
The refrigerating chamber 4 and the vegetable chamber 5 are storage chambers having a refrigerating temperature zone (for example, a positive temperature zone of 1 to 4 ℃), and are vertically separated by a partition wall 10 made of synthetic resin. A hinged openable and closable heat insulating door 4a is provided on the front surface of the refrigerating compartment 4 so as to be rotatable in the front-rear direction. A door shelf 4b is provided on the rear surface of the heat insulation door 4 a. A sliding heat insulating door 5a is provided on the front surface of the vegetable compartment 5. A lower case 11 constituting a storage container is connected to the rear surface of the heat insulating door 5 a. An upper case 12 having a smaller shape than the lower case 11 is provided on the upper portion of the lower case 11. A refrigerated food compartment 13 is provided in the lowermost portion (upper portion of the partition wall 10) of the refrigerating compartment 4. A refrigerating case 14 is provided in the refrigerated food compartment 13 so as to be able to be pulled out and pushed in.
A refrigeration cycle for cooling the storage compartments is incorporated in the heat-insulating box 1. The refrigeration cycle circuit is configured to include: a refrigerator cooler 20 that cools the refrigerating room 4 and the vegetable room 5, which are storage rooms in a refrigerating temperature range, and a freezer cooler 21 that cools the ice making room 6, the small freezer room 7, and the main freezer room 8, which are storage rooms in a freezing temperature range. A machine chamber 22 is provided on the rear side of the lower end portion of the heat-insulated box 1. In the machine room 22, a compressor 23, a condenser (not shown), a cooling fan (not shown) for cooling them, a defrosting water evaporation tray 24, and the like, which constitute a refrigeration cycle, are provided.
On the back side of the storage compartments (refrigerating compartment 4, vegetable compartment 5) in the refrigerating temperature zone in the heat-insulated box 1, as described below, a refrigerating cooler 20, a cold air duct 26 for supplying cold air generated by the refrigerating cooler 20 into the refrigerating compartment 4 (and vegetable compartment 5), a refrigerating side air blowing fan 27 for circulating the cold air, and the like are provided. A refrigerating side cooler chamber 28 also serving as a blowing duct is provided behind the lowermost refrigerated food chamber 13 of the refrigerating chamber 4, and a refrigerating cooler 20 is provided in the refrigerating side cooler chamber 28. An air inlet 29 for sucking air into the vegetable compartment 5 is provided in a lower front portion of the cooler compartment 28 on the refrigerating side. A refrigerating side water receiving unit 30 that receives the defrosting water of the refrigerating cooler 20 is provided at a lower portion of the rear portion side of the refrigerating side cooler chamber 28. The water received by the cold storage side water receiving unit 30 is guided to the defrosting water evaporating pan 24 in the machine chamber 22 through a drain hose 30a (see fig. 18) and evaporated.
A refrigerating side air blowing fan 27 and an air blowing duct 31 are provided behind the refrigerated food compartment 13. The lower end of the air duct 31 communicates with the upper portion of the refrigerating side cooler compartment 28, and the upper end of the air duct 31 communicates with the lower end of the cold air duct 26. Cold air duct 26 extends upward along the back surface of refrigerating room 4, and is covered with duct cover 32 from the front. The duct cover 32 is provided with: a plurality of cold air outlets 33 for supplying cold air flowing through the cold air duct 26 into the refrigerating chamber 4 and the refrigerating chamber 13. Although not shown, communication ports for communicating refrigerating room 4 with vegetable room 5 are formed in the right and left corner portions of the rear portion of partition wall 10 constituting the bottom plate of refrigerating room 4.
In this configuration, when the refrigerating side blower fan 27 is driven, air in the vegetable compartment 5 is sucked into the refrigerating side cooler compartment 28 through the suction port 29 as indicated by an arrow in fig. 1, and the sucked air is blown out to the blower duct 31 side. The air blown out to the air duct 31 side is blown out into the refrigerating compartment 4 and the refrigerated food compartment 13 from the plurality of cold air discharge ports 33 through the cold air duct 26. A part of the cold air blown out into the refrigerator compartment 4 is supplied into the vegetable compartment 5 again. Then, the air is finally sucked into the air duct 31 through the cooling side cooler chamber 28, and thus circulated. In this process, the air flowing through the inside of the refrigerating-side cooler chamber 28 is cooled by the refrigerating cooler 20 to become cold air, and the cold air is supplied to the refrigerating chamber 4 and the vegetable chamber 5, whereby the refrigerating chamber 4 and the vegetable chamber 5 are cooled to the temperature of the refrigerating temperature zone.
A freezing side cooler room 35, which also serves as an air supply duct, is provided on the inner side of the storage rooms (ice making room 6, small freezing room 7, main freezing room 8) in the heat insulating box 1 in the freezing temperature range. The refrigeration cooler 21 and a defrosting electric heater (not shown) are disposed so as to be located below the refrigeration-side cooler chamber 35. The freezing-side air supply fan 36 is disposed above the freezing-side cooler chamber 35. On the front surface side of the freezing-side cooler compartment 35, a cold air discharge port 37 is provided corresponding to each storage room (ice making compartment 6, small freezing compartment 7, main freezing compartment 8), and a suction port 38 is provided at the lower portion.
A drain tube 39 that receives defrost water when the freezing cooler 21 defrosts is provided below the freezing cooler 21. The drain tube 39 communicates with the defrosting water evaporation tray 24 in the machine chamber 22 via a drain pipe 40 penetrating a bottom heat insulating wall of the heat insulating box 1. Accordingly, the defrosting water received by the drain cylinder 39 is also led out to the defrosting water evaporating tray 24 via the drain pipe 40, and is evaporated in the defrosting water evaporating tray 24.
In this configuration, when the freezing side air blowing fan 36 is driven, the cold air generated by the freezing cooler 21 is circulated as follows: is supplied from each cold air discharge port 37 into the ice making chamber 6, the small freezing chamber 7, and the main freezing chamber 8, and then returned from the suction port 38 into the freezing side cooler chamber 35. Thereby, the ice making compartment 6, the small freezing compartment 7, and the main freezing compartment 8 are cooled to the temperature of the freezing temperature zone. A controller 41 for controlling the operation of the refrigerator is provided on the upper surface side of the heat insulating wall at the top of the heat insulating box 1.
Next, a specific structure of the heat insulation box 1 will be described with reference to fig. 2 to 21. The heat-insulating box body 1 has a left side wall 43, a right side wall 44, a top wall 45, a bottom wall 46, a rear wall 47, and the heat-insulating partition wall 15, and has an opening formed in the front surface. These walls 43 to 47 and the heat insulating partition wall 15 constitute a heat insulating wall of the heat insulating box 1.
The outer box 2 constituting the outer panel of the heat-insulated box 1 is made of steel plate, and has a left side plate 53, a right side plate 54, a top plate 55, a bottom plate 56, and a back plate 57, and is open at the front. In this case, the left side plate 53, the right side plate 54, and the top plate 55 are formed by bending a single strip of steel plate into a substantially U-shape. A crank-shaped bent portion 56 for forming the machine chamber 22 is formed in the bottom plate 56 in a bent manner. As shown in fig. 16, the bottom plate 56 is reinforced by fixing reinforcing plates 58 made of a metal plate to the left and right sides of the front portion and the left and right sides of the rear upper portion by spot welding. Further, metal side reinforcing plates 59 (see fig. 5) are fixed to the left and right sides of the bottom plate 56 by spot welding, and are reinforced.
Coupling pieces 53a and 54a (see fig. 6 to 8) protruding inward are formed at the front end portions of the left and right side plates 53 and 54, respectively, and coupling pieces 53b and 54b directed forward are formed at the rear end portions thereof, respectively. Coupling pieces which are inserted into and engaged with the coupling pieces 53b and 54b of the left side plate 53 and the right side plate 54 are formed at both left and right end portions of the back plate 57. As shown in fig. 3 and 5, injection ports 60 for injecting a stock solution of a foam heat insulating material described later are formed in upper and lower portions of both right and left side portions of the back plate 57. The injection ports 60 are formed at 4 locations. The back plate 57 is provided with a plurality of reinforcing molded portions 61 extending in the vertical direction.
The inner box 3 constituting the inner panel of the heat-insulating box 1 is made of synthetic resin and is integrally molded by a vacuum molding machine. The inner box 3 has a left side plate 63, a right side plate 64, a top plate 65, a bottom plate 66, and a back plate 67 corresponding to the left side plate 53, the right side plate 54, the top plate 55, the bottom plate 56, and the back plate 57 of the outer box 2, and has an intermediate partition 68 forming an outer shell of the heat insulating partition wall 15, and an opening on the front surface. A flange portion protruding sideward is formed on a peripheral edge portion of the front surface opening portion. A bent portion 66a for forming the machine chamber 22 is formed in the bottom plate 66 so as to correspond to the bent portion 56a of the bottom plate 56 of the outer box 2. The flange portions of the left and right side plates 63 and 64 are inserted into and engaged with the coupling pieces 53a and 54a of the left and right side plates 53 and 54 of the outer box 2.
As shown in fig. 6 to 8, a vacuum insulation panel 70 and a foamed insulation panel 71 made of foamed polyurethane are provided as insulation panels inside the left side wall 43. The vacuum insulation panel 70 extends in the up-down direction along the left sidewall 43 and is adhered to the inner surface of the left side plate 53 of the outer case 2 by an adhesive. The foam insulation 71 is disposed between the vacuum insulation panel 70 and the left side panel 63 of the inner box 3 and around the vacuum insulation panel 70.
Inside the right side wall 44, as well as the left side wall 43, a vacuum insulation panel 72 and a foam insulation panel 71 are provided as insulation materials. The vacuum insulation panel 72 extends in the up-down direction along the right side wall 44 and is adhered to the inner surface of the right side plate 54 of the outer case 2 with an adhesive. The foam insulation 71 is disposed between the vacuum insulation panel 72 and the right side plate 64 of the inner box 3 and around the vacuum insulation panel 72.
As shown in fig. 1 and 4, a vacuum insulation panel 73 and a foam insulation panel 71 are also provided as insulation materials inside the ceiling wall 45. A portion of the vacuum insulation panel 73 is adhered to the top panel 65 of the inner box 3 with an adhesive. The foam insulation 71 is disposed between the vacuum insulation panel 73 and the top panel 55 of the outer box 2, between the vacuum insulation panel 73 and the top panel 65 of the inner box 3, and around the vacuum insulation panel 73.
Inside the bottom wall 46, vacuum insulation panels 74 and foam insulation 71 are also provided as insulation. The vacuum insulation panel 74 is L-shaped when viewed from the side, and is bonded to the upper surface of the bottom plate 56 of the outer box 2 by an adhesive. The foam insulation 71 is disposed between the vacuum insulation panel 74 and the bottom panel 66 of the inner case 3, between the vacuum insulation panel 74 and the bottom panel 56 of the outer case 2, and around the vacuum insulation panel 74.
Inside the rear wall 47, a vacuum insulation panel 75 and a foam insulation panel 71 are provided as insulation materials. The vacuum insulation panel 75 extends in the up-down direction along the rear wall 47. Rear wall 47 has different thicknesses between rear wall 47a for a refrigerating temperature range corresponding to refrigerating room 4 and vegetable room 5 as storage rooms of a refrigerating temperature range and rear wall 47b for a freezing temperature range corresponding to ice making room 6, small freezing room 7, and main freezing room 8 as storage rooms of a freezing temperature range. The rear wall 47a for the refrigerating temperature zone is basically a vacuum insulation panel 75 as an insulation material between the back panel 57 of the outer box 2 and the back panel 67 of the inner box 3, and a part of a foam insulation material 71 is added as described later. In the rear wall 47b for the freezing temperature zone, a vacuum insulation panel 75 and a foam insulation 71 are basically used in combination as an insulation material between the back panel 57 of the outer box 2 and the back panel 67 of the inner box 3, and the foam insulation 71 is provided between the back panel 67 of the inner box 3 and the vacuum insulation panel 75.
In this way, since the rear wall 47 is formed of the heat insulating material for the freezing temperature zone rear wall 47b in combination with the vacuum insulation panel 75 and the foam heat insulating material 71, the heat insulating material is formed to be substantially thicker than the rear wall 47a for the refrigerating temperature zone using only the vacuum insulation panel 75. Accordingly, as shown in fig. 4, depth L1 of refrigerating room 4 and vegetable room 5, which are storage rooms in the refrigerating temperature range, is set to be larger than depth L2 of ice making room 6, small freezing room 7, and main freezing room 8, which are storage rooms in the freezing temperature range (L1 > L2). The heat insulating partition wall 15 is filled with a foam heat insulating material 71 as a heat insulating material inside the intermediate partition portion 68 of the inner box 3.
Here, a method of filling the foam heat insulating material 71 into each heat insulating wall of the heat insulating box 1 will be briefly described. The outer casing 2 and the inner casing 3 are combined, and vacuum insulation panels 70, 72, 73, 74, 75 corresponding to the respective insulation walls are disposed. Then, the stock solution of the foamed heat insulating material is injected from the injection ports 60 formed in 4 places of the back plate 57 of the outer box 2, which is the upper surface, with the opening of the heat insulating box 1 facing downward. The injected liquid flows down from the space inside the left and right side walls 43, 44, reaches the connection portion between the front portions of the left and right side plates 53, 63 and the connection portion between the front portions of the right and right side plates 54, 64, and foams are formed from these portions and spread into the surrounding space. The expanded foam heat insulating material 71 is expanded into the spaces of the left and right side walls 43 and 44, the space of the top wall 45, the space of the bottom wall 46, and the space of the heat insulating partition wall 15, and is finally expanded into the space of the rear wall 47.
At this time, chamfered portions 76 (see fig. 6 and 9) having a more gentle angle than 90 degrees are formed at the corners of the right and left rear portions of the heat-insulating box 1 so as to be positioned at the corners of the inner box 3. Chamfered portions 76a having different angles are also provided at the corners of the inner box 3. Therefore, the raw liquid of the foam heat insulating material injected from the injection port 60 is easily introduced into the space between the left side wall 43 and the right side wall 44 along the chamfered portions 76 and 76 a. As shown in fig. 8, a guide member 77 having an inclined guide surface 77a is disposed at a corner of the heat insulating box 1, inside the injection tip of the injection port 60 near the bottom of the heat insulating box 1. By providing the guide member 77, the raw liquid of the foam heat insulating material injected from the injection port 60 is easily guided to the space between the left side wall 43 and the right side wall 44, as in the case of the chamfered portions 76 and 76 a.
At the corner portions of the right and left rear portions of the heat insulating box 1, corner portions 78 at both right and left end portions of the back plate 57 of the outer box 2 are bent at substantially 90 degrees. Therefore, in the corner portions of the right and left rear portions of the heat-insulated box 1, the chamfered portions 76 and 76a which become the corner portions of the inner box 3 and the corner portion 78 of the back plate 57 of the outer box 2 are different in bending angle, and the angle of the chamfered portions 76 and 76a of the inner box 3 is formed to be gentler than the angle of the corner portion 78 of the outer box 2. At the corners of the rear portions of the insulation box 1, left and right, and upper and lower, there is no vacuum insulation panel, and the thickness of the foamed insulation 71 becomes thick. Further, in a portion where the thickness of the foamed heat insulating material 71 is particularly large, as shown in fig. 8 and 10, the vacuum insulation panel 75 and the foamed heat insulating material 71 are overlapped.
Flat portions are formed at the lower end portions of the back plate 57 on both the left and right sides so as to be positioned outside the corner portions 78, and the lower end portion of the back plate 57 is fixed to the side reinforcing plate 59 by bolts 50 (see fig. 5 and 8) using the flat portions.
As shown in fig. 2, a projection 79 for mounting components is provided on the upper left and right sides of the back plate 67 of the inner box 3 at a position corresponding to the refrigerating chamber 4, and a projection 80 extending downward is provided so as to be continuous with the projection 79. These projections 79 and 80 project forward, and the space inside is filled with the foam heat insulating material 71. The left and right projections 79 and 80 are L-shaped as a whole, and the left and right projections face each other. The cold air duct 26 is a concave portion surrounded by the left and right convex portions 79, 80. Mounting holes 79a for mounting components are formed in the left and right component mounting protrusions 79, and the duct cover 32 is mounted through the mounting holes 79 a.
The left and right protrusions 79, 80 are positioned around the vacuum insulation panel 75 of the rear wall 47. A plurality of air holes 81 are formed in the front surfaces of the projections 79 and 80. The air leakage holes 81 function as air leakage holes when the foam insulation 71 is filled with foam. The portion where the air leakage holes 81 are formed is a narrow portion into which the foam heat insulating material 71 enters when the foam heat insulating material 71 is filled with foam, and is a portion at the end of travel. Before the foam heat insulating material 71 is filled in the air escape holes 81, they are closed with a thin plate 82 as shown in fig. 18. The thin plate 82 is permeable to air, but has a function of preventing the foam heat insulating material 71 from leaking. Further, by attaching the thin plate 82 to the back surface side of the convex portion 80, the following functions are provided: even if there is a burr generated when the convex portion 80 and the air leakage hole 81 are formed, the burr can be prevented from damaging the vacuum insulation panel 75.
Further, 2 reinforcing molding portions 83 extending in the vertical direction are provided at the back plate 67 of the inner box 3 at positions sandwiched by the left and right convex portions 79, 80. The reinforcement molding portion 83 has a small forward projection dimension, and the foam heat insulating material 71 does not reach the back side, thereby forming a space. In a state where the duct cover 32 is attached to the convex portion 79 for component attachment, the left and right convex portions 79, 80 and the reinforcing molding portion 83 are covered with the duct cover 32 and are not visible from the front. At this time, the convex portions 79 and 80 also function as reinforcing molded portions. In the rear wall 47a for the refrigerating temperature zone of the rear wall 47, the back plate 67 of the inner box 3 and the vacuum insulation panel 75 are not bonded by the adhesive, and the back plate 67 of the unbonded portion is covered with the duct cover 32 from the front.
As shown in fig. 18, a thin plate 84 is attached to the back surface of the back plate 67 of the inner box 3 from the portion surrounded by the convex portions 79, 80 to the lower side. The thin plate 84 also has a function of preventing the vacuum insulation panel 75 from being damaged by the burr for forming on the back plate 67 side.
As shown in fig. 1, 4, and 13, the rear wall 47 is provided with an inclined portion 85 inclined so as to be low in front and high in rear at a connecting portion with the heat insulating partition wall 15, and the rear plate 67 of the inner box 3 is provided with a foamed heat insulating material 71 on the rear surface of the inclined portion 85, wherein the heat insulating partition wall 15 is a boundary portion between the rear wall 47a for a refrigerating temperature zone where the foamed heat insulating material 71 is not present and the rear wall 47b for a freezing temperature zone where the foamed heat insulating material 71 is present. As shown in fig. 18, a thin plate 86 is attached to a portion from the upper end of the inclined portion 85 to the upper side on the back surface of the back plate 57 of the inner box 3. The thin plate 86 serves to prevent the foam insulation 71 from being impregnated between the back plate 57 and the vacuum insulation panel 75 when foam filling of the foam insulation 71 is performed.
As shown in fig. 1, 4, 11, and 12, the vacuum insulation panel 75 of the rear wall 47 has a stepped portion 87a extending in the width direction at the upper end portion and the lower end portion on the rear surface side, and has 2 groove portions 87b extending in the vertical direction and communicating with the stepped portion 87a, and the heat radiation pipe 88 is disposed in the stepped portion 87a and the groove portions 87 b. With this configuration, it is not necessary to form a recess for installing the heat radiation pipe 88 on the back plate 57 side of the outer box 3. At this time, the upper and lower stepped portions 87a are formed by alternately removing the core material of the vacuum insulation panel 75, and 2 groove portions 87b are formed in a concave shape by press forming using a press roll. Further, 2 groove portions 89 extending in the vertical direction are also formed outside the vacuum insulation panel 70 of the left side wall 43 and the vacuum insulation panel 72 of the right side wall 44, and the heat radiation pipes 88 are also arranged in these groove portions 89 (see fig. 6 to 10).
The left and right side walls 43 and 44 are provided with a plurality of tray supporting protrusions 90 on the left and right side plates 63 and 64 of the inner box 3 so as to be positioned at locations corresponding to the refrigerating compartment 4. These tray supporting projections 90 extend in the front-rear direction and are arranged in a plurality of stages in the vertical direction. Further, reinforcing molded portions 91 extending in the vertical direction are provided on the left side plate 63 and the right side plate 64 of the inner box 3 so as to be positioned in front of the portion corresponding to the refrigerating compartment 4. The space on the back surface of the tray supporting protrusion 90 and the reinforcing molding part 91 is also filled with the foam heat insulating material 71.
As shown in fig. 2, an electrical wiring storage box 93 is provided at a corner portion of the left rear portion of heat insulation box 1 so as to be located on the lower rear side of refrigerating room 4. The electric wiring storage case 93 is attached to the inner case 3 before the foam heat insulating material 71 is filled with foam, and after the foam heat insulating material 71 is filled with foam, the back surface of the electric wiring storage case 93 is covered with the foam heat insulating material 71 as shown in fig. 14. The electric wiring storage case 93 stores electric wirings of electric components not shown.
In fig. 1 and 2, the drain tube 39 is disposed on the rear side of the main freezing chamber 8 so as to be positioned above the machine chamber 22. The drain tube 39 is made of, for example, synthetic resin, has a rectangular container shape elongated in the left-right direction, and has pin-shaped fixing portions 94 protruding laterally on both left and right side portions as shown in fig. 19. Convex portions 95 protruding toward the drain cylinder 39 are provided on the left and right side plates 63, 64 of the inner box 3 so as to be positioned at locations corresponding to the drain cylinder 39, and attachment holes 96 are formed in the surfaces of the convex portions 95 on the drain cylinder 39 side. Before the foam filling of the foam heat insulating material 71, the left and right fixing portions 94 of the drain tube 39 are inserted into the mounting holes 96 on the inner box 3 side. At this time, since the inner case 3 can be sufficiently elastically deformed in a state before the foam heat insulating material 71 is filled with foam, the fixing portions 94 can be easily inserted into the mounting holes 96. Then, in a state where the drain tube 39 is attached to the inner box 3, the foam heat insulating material 71 is foam-filled in each heat insulating wall of the heat insulating box 1, whereby the drain tube 39 is fixedly provided between the left side wall 43 and the right side wall 44 of the heat insulating box 1 by the fixing portion 94.
Further, a reinforcing plate 98 made of synthetic resin is provided above the drain tube 39 of the inner box 3. The reinforcing plate 98 is made of, for example, synthetic resin, and as shown in fig. 20 and 21, a pin-shaped fixing portion 99 protruding upward is provided at an upper portion, and, for example, 2 engaging claws 100 are integrally provided at a lower portion. The reinforcing plate 98 is installed as follows.
That is, before the foam-filled heat insulating foamed material 71 is filled, as shown in fig. 21, the front end portions of the 2 engaging claws 100 of the reinforcing plate 98 are inserted into the gap between the rear wall 39a of the drain pipe 39 and the back plate 67 of the inner box 3, and are hooked on the flange portion 39b (see fig. 20) of the upper end portion of the rear wall 39a, and the upper portion of the reinforcing plate 98 is pivoted rearward as shown by the arrow in fig. 21 with the hooked portion as a fulcrum. Then, the upper fixing portion 99 is inserted into: and is temporarily fixed by being inserted into a mounting hole 101 formed in the lower surface of the intermediate partition 68 of the inner box 3 forming the outer shell of the heat insulating partition wall 15. At this time, since the inner case 3 can be easily elastically deformed even before the foam heat insulating material 71 is filled with the foam, the fixing portion 99 can be easily inserted into the mounting hole 101. By filling the foam heat insulating material 71 with foam in the heat insulating box 1 in this state, the reinforcing plate 98 can be firmly attached to the inside of the inner box 3.
Therefore, the reinforcing plate 98 is fixed to the drain pipe 39 by engagement. In this case, although the mounting hole 101 needs to be provided in the intermediate partition 68 of the inner box 3 for mounting the reinforcing plate 98, it is not necessary to provide a mounting hole in the back plate 67.
As shown in fig. 17 and 18, a soft tape (softtape)103 is attached to a plurality of places such as a flange portion at the peripheral edge of the opening of the inner box 3 and a place corresponding to the partition portion of the storage room. The flexible band 103 is used to prevent the foam heat insulator 71 from leaking to the outside in a state where the flange portion of the inner box 3 is connected to the connecting pieces 53a and 54a of the outer box 2. Refrigerant pipes 104 such as suction pipes of the refrigeration cycle are disposed at corners and the like of the right and left rear portions of the heat-insulating box 1.
In packaging the refrigerator having the above-described configuration, although not shown, a cushioning material is preferably disposed on the upper surface of the control device 41 of the top wall 45 of the heat-insulating box 1 in the packaging box.
According to the above embodiment, the following operational effects can be obtained.
In a refrigerator having a heat insulating box 1 having a plurality of storage compartments having different storage temperature zones, and a structure in which a heat insulating material constituting a heat insulating wall of the heat insulating box 1 is a vacuum heat insulating plate, the thickness of the heat insulating wall corresponding to a storage compartment having a high storage temperature zone among the storage compartments is different from the thickness of the heat insulating wall corresponding to a storage compartment having a low storage temperature zone. Specifically, rear wall 47 of heat-insulated box 1 has a thickness of rear wall 47a for a refrigerating temperature range corresponding to the storage compartments (refrigerating compartment 4, vegetable compartment 5) as refrigerating temperature ranges of the storage compartments having a high storage temperature range, which is thinner than thickness of rear wall 47b for a freezing temperature range corresponding to the storage compartments (ice-making compartment 6, small freezing compartment 7, main freezing compartment 8) as freezing temperature ranges of the storage compartments having a low storage temperature range. At this time, as the heat insulating material of the rear wall 47a for the refrigerating temperature zone, the heat insulating performance can be secured basically only by the vacuum heat insulating panel 75, and thus the thickness can be formed thin. The heat insulating performance is ensured by the vacuum heat insulating panel 75 and the foam heat insulating material 71 in combination as the heat insulating material of the rear wall 47b for the freezing temperature zone, and the vacuum heat insulating panel 75 and the foam heat insulating material 71. Therefore, the refrigerator can be provided with the heat insulation wall with the thickness corresponding to the storage temperature zone of the storage chamber, and the heat insulation performance is stable.
In the heat insulating wall of the heat insulating box 1, the heat insulating material is used only as the rear wall 47a for the refrigerating temperature zone, which is the rear wall of the storage room having the refrigerating temperature zone with a high storage temperature zone, without using the foamed heat insulating material 71 or using a small amount of the heat insulating material. The rear wall 47a for the refrigerating temperature zone can ensure insulation performance substantially only with the vacuum insulation panel 75.
The rear wall 47a for a refrigerating temperature zone, which is not provided with the foamed heat insulating material 71 in the heat insulating wall, is provided with a thin plate 84 between the back plate 67 of the inner box 3 and the vacuum heat insulating panel 75. The back plate 67 of the inner box 3 is often provided with a projection 79 for mounting a component, and burrs and the like are likely to be generated during molding. When the back plate 67 and the vacuum insulation panel 75 are in direct contact, the burrs or the like may damage the vacuum insulation panel 75, but the damage to the vacuum insulation panel 75 can be prevented by providing the thin plate 84 between them.
A back plate 67 of the inner box 3, which is an inner plate of the rear wall 47, is provided with a projection 79 for component mounting. The duct cover 32 can be attached by the convex portion 79.
In the back plate 67 which is the inner plate of the rear wall 47, an air leakage hole 81 is provided in a narrow portion where the foamed heat insulating material 71 enters and a portion which becomes the end point of travel, and the air leakage hole 81 is closed by a thin plate 82 having air permeability. This makes it easy to cause gas to escape from the air escape holes 81 when the foam heat insulating material 71 is filled with foam, and the foam heat insulating material 71 can be filled with foam satisfactorily. In addition, the vacuum insulation panel 75 can be prevented from being damaged by burrs generated when the air leakage holes 81 are formed.
The rear panel 67 of the inner box 3, which is the inner panel of the rear wall 47, is provided with projections 79, 80 projecting toward the storage compartment side, and these projections 79, 80 are positioned around the vacuum insulation panel 75. The foam heat insulating material 71 enters the back surfaces of the projections 79, 80, and the vacuum insulation panel 75 can be wrapped with the foam heat insulating material 71.
The rear panel 67 of the inner box 3, which is the inner panel of the rear wall 47, is provided with protruding portions 79, 80 protruding toward the storage compartment, and a recessed portion surrounded by these protruding portions 79, 80 is used as the cold air duct 26. The cold air duct 26 can be formed well.
Depth L1 of the storage compartments (refrigerating compartment 4, vegetable compartment 5) having a high storage temperature range is set to be longer than depth L2 of the storage compartments (ice making compartment 6, small freezing compartment 7, main freezing compartment 8) having a low storage temperature range. This ensures a large effective internal volume of the storage compartment with a high storage temperature.
The cold air duct 26 formed inside the heat insulation box 1 does not allow the cold air flowing through the cold air duct 26 to flow to a portion where the vacuum insulation panel 75 is not present. This has the advantage of reducing the heat loss of the cold air flowing through the cold air duct 26.
In the back plate 67 of the inner box 3, which is an inner plate of the rear wall 47, an inclined portion 85 is provided so as to be positioned at a boundary portion between the rear wall 47b for a freezing temperature zone where the foam heat insulating material 71 is present and the rear wall 47a for a refrigerating temperature zone where the foam heat insulating material 71 is not present of the rear wall 47. Thereby, the foam insulation 71 is easily inserted into the back surface of the inclined portion 85, and the vacuum insulation panel 75 and the back plate 67 can be firmly connected by the foam insulation 71. Further, by forming the boundary portion as the inclined portion 85 when forming the inner box 3, the formability can be improved as compared with a case where the boundary portion is formed as a corner portion of substantially 90 degrees. Further, the inner boxes 3 are easily stacked when stacked, and the handling property can be improved.
At the boundary portion between the rear wall 47b for the freezing temperature zone where the foam heat insulating material 71 exists and the rear wall 47a for the refrigerating temperature zone where the foam heat insulating material 71 does not exist in the rear wall 47, and between the back plate 67 of the inner box 3 and the vacuum insulation panel 75, a thin plate 86 for preventing the foam heat insulating material 71 from being impregnated is provided. This prevents the back plate 67 from being deformed due to the foam heat insulating material 71 being impregnated therein.
The back plate 67 of the inner box 3 is provided with a reinforcing molded part 83, and the left side plate 63 and the right side plate 64 are also provided with a reinforcing molded part 91. Thus, the strength of the back plate 67, the left side plate 63, and the right side plate 64 made of synthetic resin can be increased by providing the reinforcing molding parts 83 and 91. Since the duct cover 32 is provided on the back plate 67 as a cover for covering the reinforcing molded part 83 from the front, the appearance can be improved.
The ceiling wall 45 of the heat insulating wall of the heat insulating box 1, which is the ceiling plate 65 serving as the inner panel, and the vacuum heat insulating panel 73 are bonded by an adhesive. This prevents the top plate 65 and the vacuum insulation panel 73 from being peeled off. The heat insulating wall of the heat insulating box 1 is configured such that the rear wall 47a for the refrigerating temperature zone, which is not bonded by the adhesive between the inner box 3 and the vacuum heat insulating panel 75, is covered with the duct cover 32 from the storage compartment side. Thereby, the duct cover 32 can make the appearance look good.
In each heat insulating wall of the heat insulating box 1, a foam heat insulating material 71 is present so as to surround the vacuum heat insulating panels 70, 72, 73, 74, 75. Thereby, the vacuum insulation panels 70, 72, 73, 74, 75 can be protected by the foam insulation 71.
The foam heat insulating material 71 at the corner of the heat insulating box 1 is thick (see fig. 6 to 10). Since it is difficult to dispose the vacuum insulation panel at the corner of the insulation box 1, the foam insulation 71 is preferably used as the main insulation material. In addition, in the heat insulating wall, the portion of the heat insulating material where the vacuum heat insulating panel is not present is mainly made of the foam heat insulating material 71, and the foam heat insulating material 71 is thick. In the heat insulating box 1, the foam heat insulating material 71 overlaps the vacuum heat insulating panel at a thick portion of the foam heat insulating material 71 (see fig. 10). This further improves the heat insulating performance of the overlapping portion.
An electrical wiring storage case 93 is provided at a corner of the heat insulating box 1. This enables effective use of the corner portion. That is, since the wiring or the like is disposed in the space filled with the foam heat insulating material 71, the wiring or the like can be prevented from being damaged by contact with the vacuum heat insulating plate or the like, and the wiring process can be performed linearly in the vertical direction by the corner portion, and thus, the manufacturability is good.
A heat pipe 88 is disposed at a step portion 87a of the vacuum insulation panel 75 formed at the rear wall 47 (see fig. 11). Thus, it is not necessary to form a recess for installing the heat radiation pipe 88 on the back plate 57 side of the outer case 2.
In the corner of the heat-insulating box 1, the angles of the chamfered portions 76 and 76a which become the corners of the inner box 3 are made to be gentler than the angle of the corner 78 which becomes the corner of the outer box 2, and are made to be different. Thereby, the width dimension of the rear wall 47 in the left-right direction of the vacuum insulation panel 75 can be set as large as possible.
An injection port 60 for injecting the raw liquid of the heat insulating foam material 71 is formed near the corner 78 of the back plate 57 of the heat insulating box 1. This makes it possible to easily pour the raw liquid of the foam heat insulator 71 into the left and right side walls 43 and 44. The outer side of the corner 78 of the back plate 57 of the heat insulating box 1 is formed flat, and is fixed by the bolt 50 at the flat portion. Thereby, the back plate 57 can be firmly fixed. A soft band 103 is provided at a connecting portion between the flange portion of the inner box 3 and the outer box 2 of the heat insulating box 1. This can prevent the foam heat insulating material 71 from leaking to the outside when the foam heat insulating material 71 is filled with foam.
A metal reinforcing plate 58 and a side reinforcing plate 59 are fixed to the metal bottom plate 56 of the outer plate constituting the bottom of the heat insulating box 1 by spot welding. This can reinforce the bottom plate 56, and the fixing operation can be easily performed.
The refrigerator has a reinforcing plate 98 provided at the rear part of a storage room in a freezing temperature range and a drain tube 39 for receiving defrosted water of the freezing cooler 21, and an engaging claw 100 of the reinforcing plate 98 is engaged and fixed to an end part of a rear wall 39a of the drain tube 39. Thus, the reinforcing plate 98 can be attached to the back plate 67 of the inner box 3 without providing an attachment hole in the back plate 67. The drain cylinder 39 is constituted by: since the fixing portions 94 having a convex shape are provided on both the left and right sides and are fixed to the left and right side walls 43 and 44 via the fixing portions 94, the drain tube 39 can be firmly attached to the heat insulating box 1.
Other embodiments
In the above embodiment, the rear wall 47 of the heat insulating wall of the heat insulating box 1 is configured as follows: the thickness of the refrigerating temperature zone rear wall 47a and the thickness of the freezing temperature zone rear wall 47b are different, but the thickness is not limited to this, and the thickness of the left side wall 43 and the thickness of the right side wall 44 may be different, for example.
Further, although the following constitution is adopted for the rear wall 47: although the thickness of the rear wall 47a for a refrigerating temperature zone mainly composed of the vacuum insulation panel 75 as the heat insulator is different from the thickness of the rear wall 47b for a freezing temperature zone obtained by using the vacuum insulation panel 75 and the foam heat insulator 71 as the heat insulator in combination, the thickness of the vacuum insulation panel 75 of the rear wall 47a for a refrigerating temperature zone and the thickness of the rear wall 47b for a freezing temperature zone may be different from each other.
In the above embodiment, the example in which two coolers, i.e., the refrigerating cooler 20 and the freezing cooler 21, are provided is given, but the present invention is not limited thereto, and 1 cooler may be used.
As described above, according to the refrigerator of the present embodiment, it is possible to provide the following refrigerator: in a refrigerator having a heat insulating box having a plurality of storage compartments with different storage temperature zones, and a heat insulating material constituting a heat insulating wall of the heat insulating box using a vacuum heat insulating panel, the heat insulating wall has a thickness corresponding to the storage temperature zone of the storage compartment, and the heat insulating performance is stable.
While several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These new embodiments can be implemented in other various forms, and various omissions, substitutions, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are also included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalent scope thereof.
Claims (10)
1. A refrigerator is provided with a heat insulation box body, the heat insulation box body is provided with a plurality of storage chambers with different storage temperature zones, a heat insulation material forming a heat insulation wall of the heat insulation box body uses a vacuum heat insulation plate,
the thickness of the heat insulation wall corresponding to the storage chamber with high storage temperature zone is different from the thickness of the heat insulation wall corresponding to the storage chamber with low storage temperature zone,
the vacuum heat insulation plate is provided with a heat radiation pipe.
2. The refrigerator according to claim 1, wherein:
a foam heat insulating material is also used as the heat insulating material of the heat insulating wall, and the thickness of the heat insulating wall is different between a portion where the foam heat insulating material is present and a portion where the foam heat insulating material is absent.
3. The refrigerator according to claim 2, wherein:
the heat insulating material is used only for the heat insulating wall of the storage chamber having a high storage temperature zone in the storage chamber, without using a foam heat insulating material or a part having a small amount of heat insulating material.
4. The refrigerator according to claim 2 or 3, wherein:
the heat insulating material in the heat insulating wall is used only for the rear wall of the storage chamber without using a foam heat insulating material or using a small amount of heat insulating material.
5. The refrigerator according to any one of claims 1 to 3, wherein:
in the portion of the heat insulating wall where the foam heat insulating material is not used, a thin plate is provided between the inner panel on the storage compartment side and the vacuum heat insulating panel.
6. The refrigerator according to any one of claims 1 to 3, wherein:
in the heat-insulating box, a protruding portion for attaching a component protruding toward the storage compartment is provided on an inner panel existing on the storage compartment side.
7. The refrigerator according to claim 2 or 3, wherein:
in the heat insulating box, an air leakage hole is formed in a narrow part where the foamed heat insulating material present on the inner panel on the storage compartment side enters and a part which becomes a traveling end point, and the air leakage hole is closed by a thin plate.
8. The refrigerator according to any one of claims 1 to 3, wherein:
in the heat-insulated box, a convex portion protruding toward the storage compartment is provided on an inner panel existing on the storage compartment side, and the convex portion is located around the vacuum heat-insulated panel.
9. The refrigerator according to any one of claims 1 to 3, wherein:
in the heat-insulated box, a convex portion protruding toward the storage compartment is provided on an inner panel existing on the storage compartment side, and a concave portion surrounded by the convex portion is used as a cold air duct.
10. The refrigerator according to any one of claims 1 to 3, wherein:
the depth of the storage chamber with a high storage temperature zone is longer than that of the storage chamber with a low storage temperature zone.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014114201A JP6655277B2 (en) | 2014-06-02 | 2014-06-02 | refrigerator |
| JP2014-114201 | 2014-06-02 | ||
| CN201510067816.0A CN105135804A (en) | 2014-06-02 | 2015-02-09 | Refrigerator |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510067816.0A Division CN105135804A (en) | 2014-06-02 | 2015-02-09 | Refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111189277A true CN111189277A (en) | 2020-05-22 |
Family
ID=54721252
Family Applications (8)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010034542.6A Pending CN111219929A (en) | 2014-06-02 | 2015-02-09 | Refrigerator with a door |
| CN202010034507.4A Pending CN111189277A (en) | 2014-06-02 | 2015-02-09 | Refrigerator with a door |
| CN202010034595.8A Pending CN111219931A (en) | 2014-06-02 | 2015-02-09 | Refrigerator with a door |
| CN201811000412.XA Pending CN109186171A (en) | 2014-06-02 | 2015-02-09 | Refrigerator |
| CN202010050605.7A Pending CN111219932A (en) | 2014-06-02 | 2015-02-09 | Refrigerator with a door |
| CN201510067816.0A Pending CN105135804A (en) | 2014-06-02 | 2015-02-09 | Refrigerator |
| CN202010034503.6A Pending CN111219928A (en) | 2014-06-02 | 2015-02-09 | Refrigerator with a door |
| CN202010034556.8A Pending CN111219930A (en) | 2014-06-02 | 2015-02-09 | Refrigerator with a door |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010034542.6A Pending CN111219929A (en) | 2014-06-02 | 2015-02-09 | Refrigerator with a door |
Family Applications After (6)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010034595.8A Pending CN111219931A (en) | 2014-06-02 | 2015-02-09 | Refrigerator with a door |
| CN201811000412.XA Pending CN109186171A (en) | 2014-06-02 | 2015-02-09 | Refrigerator |
| CN202010050605.7A Pending CN111219932A (en) | 2014-06-02 | 2015-02-09 | Refrigerator with a door |
| CN201510067816.0A Pending CN105135804A (en) | 2014-06-02 | 2015-02-09 | Refrigerator |
| CN202010034503.6A Pending CN111219928A (en) | 2014-06-02 | 2015-02-09 | Refrigerator with a door |
| CN202010034556.8A Pending CN111219930A (en) | 2014-06-02 | 2015-02-09 | Refrigerator with a door |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6655277B2 (en) |
| CN (8) | CN111219929A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109564054A (en) * | 2016-08-10 | 2019-04-02 | 松下知识产权经营株式会社 | Freezer |
| JP2018025349A (en) * | 2016-08-10 | 2018-02-15 | パナソニックＩｐマネジメント株式会社 | refrigerator |
| CN106871540A (en) * | 2017-02-14 | 2017-06-20 | 合肥美的电冰箱有限公司 | Refrigerator |
| KR20210007643A (en) * | 2019-07-12 | 2021-01-20 | 엘지전자 주식회사 | Refrigerator |
| JP2021181845A (en) * | 2020-05-18 | 2021-11-25 | 東芝ライフスタイル株式会社 | refrigerator |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN111219930A (en) | 2020-06-02 |
| JP2015227762A (en) | 2015-12-17 |
| CN111219928A (en) | 2020-06-02 |
| CN111219929A (en) | 2020-06-02 |
| CN111219932A (en) | 2020-06-02 |
| CN111219931A (en) | 2020-06-02 |
| CN109186171A (en) | 2019-01-11 |
| JP6655277B2 (en) | 2020-02-26 |
| CN105135804A (en) | 2015-12-09 |
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Application publication date: 20200522 |