Refrigerator

Abstract

The invention provides a refrigerator capable of inhibiting condensation in a vegetable chamber. A refrigerator (1) is provided with: a refrigerating chamber (21); a cooler chamber (102) that accommodates a cooler (201) that generates cold air to be supplied to the refrigerating chamber (21); a vegetable chamber (51) disposed below the refrigerating chamber (21) and accommodating a container (52); the freezing chamber (61) is arranged below the vegetable chamber (51) and is adjacent to the vegetable chamber (51); a cooler chamber (509) arranged behind the vegetable chamber (61) and accommodating a cooler (501) for generating cold air to be supplied to the vegetable chamber (51) and the freezing chamber (61); a first air path for guiding the cold air generated by the cooler (501) to a discharge port of the vegetable chamber (51); and a second air path for guiding the cold air generated by the cooler (501) to a discharge port of the freezing chamber (61).

Description

Technical Field

[0001] The present invention relates to a cold storage. Background Art

[0002] Patent Document 1 describes: "The cold storage of the present embodiment includes: a storage chamber formed with an air outlet for cold air; a cooler for cooling the storage chamber; and a fan device for supplying the cold air cooled by the cooler from the air outlet into the storage chamber. For one of the above coolers, there are two or more of the fan devices for the cooler."

[0003] Prior Art Documents

[0004] Patent Documents

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 2021-156571 Summary of the Invention

[0006] Technical Problem to be Solved by the Invention

[0007] In the cold storage described in Patent Document 1, the cold air used in the refrigerating chamber flows into the vegetable chamber, and the vegetable chamber is cooled (paragraph 0015). Therefore, the cold air flowing into the vegetable chamber becomes high humidity due to the moisture in the refrigerating chamber, and dew condensation may occur in the vegetable chamber.

[0008] The problem to be solved by the present invention is to provide a cold storage capable of suppressing dew condensation in the vegetable chamber.

[0009] Technical Solution for Solving the Problem

[0010] The cold storage of the present invention includes: a refrigerating chamber; a first cooler chamber for housing a first cooler that generates cold air to be supplied to the refrigerating chamber; a vegetable chamber disposed below the refrigerating chamber for housing containers; a freezer disposed adjacent to the vegetable chamber below the vegetable chamber; and a second cooler chamber disposed behind the vegetable chamber for housing a second cooler that generates cold air to be supplied to the vegetable chamber and the freezer; a first air passage for guiding the cold air generated by the second cooler to the air outlet of the vegetable chamber; and a second air passage for guiding the cold air generated by the second cooler to the air outlet of the freezer. Brief Description of the Drawings

[0011] Figure 1 is a front view of the cold storage of the present invention.

[0012] Figure 2 is Figure 1 the A-A cross-sectional view of.

[0013] Figure 3It is a schematic diagram of the air passage structure through which the cold air generated by the second cooler flows.

[0014] Figure 4 It is a view taken along the Figure 2 section line B-B and observed from the front side.

[0015] Figure 5 It is Figure 4 an enlarged view of part C.

[0016] Figure 6 It is a sectional view showing the vicinity of the vegetable compartment.

[0017] Figure 7 It is Figure 6 an enlarged view of part D.

[0018] Figure 8 It is a view taken by cutting near the vegetable compartment and observed from the front diagonal side.

[0019] Figure 9 It is a perspective view of the plate heater.

[0020] Figure 10 It is a top view of the vegetable compartment.

[0021] Figure 11 It is a module diagram showing the specific hardware structure of the control device.

[0022] Figure 12 It is a view of the vegetable compartment with the container stored, observed from the front.

[0023] Figure 13 It is a view of the vegetable compartment with the container removed, observed from the front.

[0024] Figure 14 It is a view of the vegetable compartment with the back cover and the container removed, observed from the front.

[0025] Figure 15 It is a sectional view showing the vicinity of the return port in the vegetable compartment, cut in the front-rear direction.

[0026] Figure 16 It is Figure 15 an enlarged view of part F.

[0027] Figure 17 It is an exploded perspective view showing the structure of the back side of the vegetable compartment.

[0028] Figure 18 It is a view showing the structure of the back of the vegetable compartment extracted.

[0029] Figure 19 It is Figure 18 an enlarged view of part G.

[0030] Figure 20 It is a perspective view of the container.

[0031] Figure 21 It is a perspective view of the upper container.

[0032] Figure 22 It is a perspective view of the lower container.

[0033] Figure 23 It is Figure 20 the H-H sectional view of the container shown.

[0034] Explanation of reference numerals:

[0035] 1 Refrigerator

[0036] 10 Heat insulation box

[0037] 102 Cooler chamber (first cooler chamber)

[0038] 11 Inner box

[0039] 111 Groove

[0040] 112 Support part

[0041] 12 Outer box

[0042] 13 Heat insulation member

[0043] 2 Door

[0044] 201 Cooler (first cooler)

[0045] 21 Refrigerating chamber

[0046] 22 Shelf

[0047] 23 Chilled food chamber

[0048] 3 Door

[0049] 300 Air passage

[0050] 301 Heat insulation wall

[0051] 302 Heat insulation wall

[0052] 303 Cover

[0053] 304 Housing

[0054] 305 Vacuum heat insulation member

[0055] 31 Ice making chamber

[0056] 32 Outlet

[0057] 4 Door

[0058] 41 Freezer

[0059] 43 Return port

[0060] 44 discharge ports

[0061] 5 doors

[0062] 500 control device

[0063] 501 cooler (second cooler)

[0064] 503 heat insulation wall (first heat insulation wall)

[0065] 5031 tank

[0066] 504 heating mechanism

[0067] 505 fan

[0068] 506 discharge port

[0069] 507 discharge port

[0070] 508 air damper

[0071] 509 cooler chamber

[0072] 51 vegetable chamber

[0073] 510 return port

[0074] 511 air passage (first air passage)

[0075] 512 heat insulation member

[0076] 513 heat insulation member

[0077] 514 rear panel

[0078] 52 container

[0079] 52a upper container

[0080] 52a1 handle part

[0081] 52a2 flange

[0082] 52a3 inner box sliding part

[0083] 52a4 container sliding part

[0084] 52a5 rib

[0085] 52b lower container

[0086] 52b1 flange

[0087] 52b2 sliding bearing part

[0088] 521 rear cover

[0089] 522 air passage

[0090] Upper space of 523

[0091] Lower space of 524

[0092] Connecting port of 525

[0093] Air passage of 526

[0094] Air passage of 527

[0095] Connecting port of 528

[0096] Heat insulation wall of 531

[0097] Outlet of 532

[0098] Heat insulation member of 533

[0099] Support member of 541

[0100] Electric heating wire of 542

[0101] Corner of 552

[0102] Space of 561

[0103] Space of 562

[0104] Rear wall of 571

[0105] Heater of 572

[0106] Door

[0107] Heat insulation wall (second heat insulation wall) of 601

[0108] Air passage (second air passage) of 602

[0109] Temperature sensor of 603

[0110] Freezer compartment

[0111] Outlet of 611

[0112] Return port of 612

[0113] Container

[0114] Side wall surface of 621

[0115] Side wall surface of 622

[0116] Fin-shaped seal

[0117] Diagonal line L1

[0118] Axis L2

[0119] Angle θ Detailed implementation mode

[0120] Hereinafter, embodiments for implementing the present invention (referred to as embodiments) will be described with reference to the accompanying drawings. And in the description of one embodiment below, descriptions of other embodiments applicable to one embodiment will also be appropriately made. The present invention is not limited to the following one embodiment, and different embodiments can be combined with each other, or arbitrarily deformed within the range not significantly impairing the effects of the present invention. In addition, the same reference numerals are assigned to the same components, and repeated descriptions are omitted. Moreover, components having the same function are given the same name. The illustrated content is merely schematic content, and for the convenience of illustration, it may sometimes be changed from the actual structure within the range not significantly impairing the effects of the present invention, or a part of the components may be omitted or deformed between the drawings. In addition, in the same embodiment, it is not necessarily required to have all the structures.

[0121] Figure 1 is a front view of the refrigerator 1 of the present invention. The refrigerator 1 has doors 2, 3, 4, 5, and 6. The door 2 is a double-opening door that can rotate about a rotating shaft (not shown) provided at each of the left and right ends of the refrigerator 1. The doors 3, 4, 5, and 6 are pull-out doors. Heat insulation members are arranged inside the doors 2, 3, 4, 5, and 6.

[0122] Figure 2 is Figure 1 the A-A cross-sectional view of. The refrigerator 1 has a refrigerating chamber 21 closed by the door 2, an ice-making chamber 31 closed by the door 3, a vegetable chamber 51 closed by the door 5, and a freezing chamber 61 (a large freezing chamber) closed by the door 6. Although not shown in Figure 2 , the refrigerator 1 also has a freezing chamber 41 (a small freezing chamber, Figure 3 ) closed by the door 4. The freezing chamber 41 is adjacent to the ice-making chamber 31 in the left-right direction (horizontal direction). The refrigerating chamber 21, the ice-making chamber 31, the freezing chamber 41, the vegetable chamber 51, and the freezing chamber 61 are formed in the heat-insulating box body 10. The heat-insulating box body 10 has an inner box 11, an outer box 12, and a heat-insulating member 13. The refrigerating chamber 21, the ice-making chamber 31, the freezing chamber 41, the vegetable chamber 51, and the freezing chamber 61 are all formed inside, for example, a resin inner box 11. Between the inner box 11 and an outer box 12 made of, for example, metal that constitutes the outer contour of the refrigerator 1, a heat-insulating member 13 such as a vacuum heat-insulating member or foamed polyurethane formed on-site is arranged.

[0123] The refrigerating chamber 21 is a storage chamber fixed to the refrigerating temperature range (for example, 3°C to 8°C) (a storage chamber in the refrigerating temperature range). The refrigerating chamber 21 is adjacent to the ice-making chamber 31 and the freezing chamber 41 above them. Shelves 22 on which foods and the like can be placed are arranged inside the refrigerating chamber 21. In addition, an ice fresh-keeping chamber 23 fixed to a temperature range of 0°C to 2°C is arranged inside the refrigerating chamber 21.

[0124] The ice-making chamber 31 and the freezer compartment 41 are both storage compartments (storage compartments in the freezing temperature range) fixed in the freezing temperature range (for example, -20°C to -18°C). The ice-making chamber 31 and the freezer compartment 41 are arranged adjacent to the refrigerating chamber 21 and the vegetable compartment 51 (adjacent in the vertical direction) below the refrigerating chamber 21 and above the vegetable compartment 51. The sum of the capacities of the ice-making chamber 31 and the freezer compartment 41, that is, the capacity of the storage compartment in the freezing temperature range arranged above the vegetable compartment 51 is smaller than the capacity of the freezer compartment 61. That is, the ice-making chamber 31 and the freezer compartment 41 are storage compartments in the freezing temperature range with a smaller capacity than the freezer compartment 61.

[0125] The vegetable compartment 51 is a storage compartment (storage compartment in the refrigerating temperature range) fixed in the refrigerating temperature range (for example, 3°C to 8°C). The vegetable compartment 51 is arranged adjacent to the ice-making chamber 31, the freezer compartment 41, and the freezer compartment 61 below the refrigerating chamber 21, the ice-making chamber 31, and the freezer compartment 41 and above the freezer compartment 61. Containers 52 capable of storing vegetables, beverages, etc. are stored in the vegetable compartment 51. By arranging the vegetable compartment 51 at a relatively high position at a certain distance from the ground, users can easily take out vegetables, etc.

[0126] The freezer compartment 61 is a storage compartment (storage compartment in the freezing temperature range) fixed in the freezing temperature range (for example, -20°C to -18°C). The freezer compartment 61 is arranged adjacent to the vegetable compartment 51 below the refrigerating chamber 21 and the vegetable compartment 51. Containers 62 capable of storing frozen items such as frozen foods are stored in the freezer compartment 61.

[0127] The refrigerator 1 has a cooler chamber 102 and a cooler chamber 509. The cooler chamber 102 (the first cooler chamber) houses a cooler 201 (the first cooler, an evaporator) that generates cold air supplied to the refrigerating chamber 21. The cooler 201 is provided in the refrigerator 1 and is a structure for cooling the refrigerating chamber 21. The cooler 201 is set to assume the temperature of the storage compartment in the refrigerating temperature range (for example, -15°C to 0°C). The cooler chamber 102 and the cooler 501 are arranged on the back surface of the refrigerating chamber 21.

[0128] The cooler chamber 509 (second cooler chamber) houses a cooler 501 (second cooler; evaporator) that generates cold air supplied to the vegetable chamber 51 and the freezer chamber 61. The cooler 501 is at a relatively low temperature compared to the cooler 201 and is set to the temperature of a storage chamber in the assumed freezing temperature range (e.g., -28°C to -20°C). Therefore, the cooler 501 generates cold air that can be supplied to the storage chamber in the freezing temperature range. However, the cold air generated by the cooler 501 and capable of being supplied to the storage chamber in the freezing temperature range is also supplied to the vegetable chamber 51, the details of which will be described later. The cooler 501 is provided in the refrigerator 1 and is a structure that cools the vegetable chamber 51 and the freezer chambers 41 and 61. The cooler 501 and the cooler chamber 509 are arranged behind the vegetable chamber 51. However, the cooler 501 and the cooler chamber 509 do not need to be arranged only behind the vegetable chamber 51, as long as at least a part of the cooler 501 and the cooler chamber 509 is arranged behind the vegetable chamber 51. In the example of the present invention, the cooler 501 and the cooler chamber 509 are arranged in a range including the back side (rear) of the vegetable chamber 51, and in this embodiment, they straddle the rear of the vegetable chamber 51 and the rear of the freezer chamber 61. However, the cooler 501 and the cooler chamber 509 may also be arranged only on the back side (rear) of the vegetable chamber 51.

[0129] In the example of the present invention, the cooler 501 is arranged across the vegetable chamber 51 and the freezer chamber 61 on the back side of the vegetable chamber 51 and the freezer chamber 61. Thereby, for the freezer chamber 61, which has a larger capacity compared to the ice-making chamber 31 and the freezer chamber 41 and requires a large air volume, cold air can be supplied with a large air volume. Moreover, for the ice-making chamber 31 and the freezer chamber 41 in the freezing temperature range, the cold air of the cooler 501 can also be supplied without significantly reducing the air volume.

[0130] Figure 3 It is a schematic diagram of the air duct structure through which the cold air generated by the cooler 501 flows. The refrigerator 1 includes an air duct 300, an air duct 511 (first air duct), and an air duct 602 (second air duct). In addition, the refrigerator 1 has outlets 32, 44, 506, 507, and 611.

[0131] The outlet 32 is provided in the ice-making chamber 31. The outlet 44 is provided in the freezer chamber 41. The outlets 506 and 507 are provided in the vegetable chamber 51. Figure 3In [the figure], for the sake of simplifying the illustration, the discharge ports 506 and 507 are illustrated as an integrated opening, but in reality, they are independent openings. The discharge port 611 is provided in the freezer compartment 61. The air duct 300 is an air duct that guides the cold air generated by the cooler 501 to the discharge ports 32 and 44. The air duct 511 is an air duct that guides the cold air generated by the cooler 501 to the discharge ports 506 and 507. The air duct 602 is an air duct that guides the cold air generated by the cooler 501 to the discharge port 611. Discharge is performed by the rotation of the fan 505, and the cold air flows as shown by the solid arrows.

[0132] In the refrigerator 1 of the present invention, the cold air generated by the cooler 501 is directly discharged to the vegetable compartment 51. Thereby, dry cold air can be discharged to the vegetable compartment 51, and dew condensation in the vegetable compartment 51 can be suppressed. In addition, low-temperature cold air can be directly discharged to the vegetable compartment 51, and the cooling speed of the vegetable compartment 51 can be increased. Moreover, above and below the vegetable compartment 51, the ice-making compartment 31 and the freezer compartments 41 and 61 in the freezing temperature zone are arranged adjacent to the vegetable compartment 51. Therefore, although separated by the heat insulation walls 302 and 601, the vegetable compartment 51 is slightly cooled by the ice-making compartment 31 and the freezer compartments 41 and 61. Therefore, the discharge amount of the cold air directly discharged to the vegetable compartment 51 can be reduced, and the energy efficiency can be improved.

[0133] The refrigerator 1 has return ports 43, 510, and 612. The return port 43 is provided in the freezer compartment 41. The cold air in the freezer compartment 41 returns to the cooler chamber 509 through the return port 43 as shown by the dashed arrow. The return port 510 is provided in the vegetable compartment 51. The cold air in the vegetable compartment 51 returns to the cooler chamber 509 through the return port 510 as shown by the dashed arrow. The return port 612 is provided in the freezer compartment 61. The cold air in the freezer compartment 61 returns to the cooler chamber 509 through the return port 612 as shown by the dashed arrow.

[0134] Return Figure 2 Moreover, the refrigerator 1 has heat insulation walls 301, 302, 601, and 503. The heat insulation wall 301 is a structure that vertically separates the refrigerating compartment 21 from the ice-making compartment 31 and the freezer compartment 41. The heat insulation wall 302 is a structure that vertically separates the ice-making compartment 31 and the freezer compartment 41 from the vegetable compartment 51. The heat insulation wall 601 (second heat insulation wall) is a structure that vertically separates the vegetable compartment 51 from the freezer compartment 61. The heat insulation wall 503 (first heat insulation wall) is a structure that separates the cooler chamber 509 from the vegetable compartment 51 front and back.

[0135] Figure 4 is a view taken along the Figure 2 section line B-B and viewed from the front side. Figure 5 is Figure 4Enlarged view of part C. The heat insulation wall 302 has a lid 303, a housing 304, and a plate-shaped vacuum heat insulation member 305. The vacuum heat insulation member 305 is housed in the bottomed housing 304, and the lid 303 is arranged to cover the vacuum heat insulation member 305. The heat insulation wall 302 that separates the vegetable compartment 51 and the freezer compartment 41 is a component (separate) different from the heat insulation box body 10, and the heat insulation wall 302 is fitted into a groove 111 formed on the inner surface of the inner box 11 that constitutes the heat insulation box body 10. By making the heat insulation wall 302 a component separate from the heat insulation box body 10, it is possible to easily install a rear covering member 521 ( Figure 13 ) etc. arranged on the back surface of the heat insulation wall 302 onto the heat insulation box body 10. At the fitting part, a sealing member (not shown), such as a packing, is arranged between the heat insulation wall 302 and the inner surface of the inner box 11. Additionally, although not described, the heat insulation wall 601 is also a component (separate) different from the heat insulation box body 10.

[0136] Figure 6 It is a cross-sectional view near the vegetable compartment 51. Figure 7 It is Figure 6 Enlarged view of part D. Figure 8 It is a view of cutting near the vegetable compartment 51 and observing from the front side at an oblique angle. Cold air discharge ports 506, 507 for discharging cold air to the vegetable compartment 51 are provided on the back wall 571. The back wall 571 is the surface of the rear covering member 521 facing the vegetable compartment 51 side. The discharge port 506 (the first discharge port) is arranged at a position above the upper end of the container 52 (drawer container), and is an opening for discharging cold air in at least one direction of the horizontal direction or the obliquely upward direction. The discharge port 506 preferably faces the lower surface of the heat insulation wall 302 (the top surface of the vegetable compartment 51) and discharges cold air obliquely upward.

[0137] The container 52 is arranged in the refrigerator 1. The upper end of the container 52 is open. An ice-making compartment 31 and a freezer compartment 41 are arranged adjacent to the vegetable compartment 51 above the vegetable compartment 51. Therefore, the heat insulation wall 302 that separates the vegetable compartment 51 from the ice-making compartment 31 and the freezer compartment 41 is easily cooled by the ice-making compartment 31 and the freezer compartment 41. Additionally, as described above, the heat insulation wall 302 is separate from the heat insulation box body 10, and even if there is the above-mentioned sealing member between them, cold air can flow from the ice-making compartment 31 and the freezer compartment 41 into the vegetable compartment 51 through the gap formed between the heat insulation wall 302 and the heat insulation box body 10. Since there is high-humidity cold air in the vegetable compartment 51, dew condensation is likely to occur on the lower surface of the heat insulation wall 302 (the surface facing the vegetable compartment 51). Especially, dew condensation is likely to occur on the lower surface of the heat insulation wall 302 on the back side near the cooler 501.

[0138] Therefore, by configuring the discharge port 506 in this way, as shown in Figures 6 - 8As shown by the medium thick solid line arrow, the cold air can be discharged in a manner of licking (adhering to) the lower surface of the heat insulation wall 302. That is, the cold air flows forward between the upper opening (upper end) of the container 52 and the top surface of the vegetable compartment 51 (the lower surface of the heat insulation wall 302). At this time, the cold air is discharged horizontally, preferably upward, so as not to enter the interior of the container 52 (especially the upper space 523). The cold air discharged from the discharge port 506 is dry cold air directly supplied from the cooler compartment 509. Therefore, the vicinity of the top surface of the vegetable compartment 51 can be dried, and condensation on the top surface of the vegetable compartment 51 can be suppressed.

[0139] In addition, the container 52 is divided into front and rear parts, and the container 52 has a front space 561 and a rear space 562. In addition, the space 562 is further divided into an upper space 523 and a lower space 524. In the present embodiment, the container 52 is composed of an upper container 52a corresponding to the upper space 523 (forming the upper space 523 inside) and a lower container 52b corresponding to the front space 561 and the lower space 524 (forming the space 561 and the lower space 524 inside).

[0140] The cold air from the discharge port 506 flowing from the rear to the front between the container 52 and the heat insulation wall 302 collides with the inner surface of the door 5. As a result, the cold air flows into the interior of the space 561 adjacent to the inner surface of the door 5 from above the space 561. Thereby, the interior of the space 561 located at the position farthest from the discharge port 506 can be cooled. Moreover, the space 561 and the lower space 524 are communicated through a communication port 525 disposed at the rear side of the space 561. Therefore, the cold air flowing into the space 561 from above flows into the lower space 524 through the communication port 525. The cold air inside the lower space 524 is discharged to the outside of the container 52 through a communication port 528 formed at the rear side of the lower space 524. By having the discharge port 506, dry cold air can also flow into the lower space 524 where it is difficult for the cold air to directly flow from the discharge ports 506 and 507 due to the rear wall of the container 52, and condensation inside can be suppressed.

[0141] In another embodiment, the discharge port 506 is disposed near the upper end of the container 52 and discharges gas obliquely upward. The vicinity of the upper end of the container 52 mentioned here means being close to the upper end of the container 52 (at the same height as the upper end, above the upper end, or below the upper end) to such an extent that most of the cold air discharged from the discharge port 506 does not blow onto the container 52. More specifically, the position near the upper end is a position where the axis extending from the opening constituting the discharge port 506 (the axis extending in the direction perpendicular to the opening) does not overlap with the container 52. By configuring in this way, condensation on the lower surface of the heat insulation wall 302 can also be suppressed.

[0142] On the other hand, the discharge port 507 (second discharge port) provided at a position lower than the discharge port 506 is provided in the heat insulation wall 503 within the height range of the container 52. The discharge port 507 discharges cold air toward the heat insulation wall 601 (second heat insulation wall) in the manner shown by the dashed line in Figures 6 - 8 . That is, the discharge port 507 is disposed at a position lower than the upper end of the container 52 and discharges cold air in at least one of the horizontal direction or the obliquely downward direction. Since the specific gravity of the cold air is large, for example, the cold air discharged in the horizontal direction goes downward due to its own weight and goes in the direction of the heat insulation wall 601. Therefore, as a result, the cold air is discharged toward the heat insulation wall 601.

[0143] Below the vegetable compartment 51, a freezer compartment 61 is provided adjacent to the vegetable compartment 51. Therefore, dew condensation may also occur on the upper surface (bottom surface of the vegetable compartment 51) of the heat insulation wall 601 that separates the vegetable compartment 51 and the freezer compartment 61. Therefore, by discharging dry cold air toward the upper surface of the heat insulation wall 601, the vicinity of the upper surface of the heat insulation wall 601 can be dried, and dew condensation on the heat insulation wall 601 can be suppressed.

[0144] As described above, the discharge port 506 (first discharge port) and the discharge port 507 (second discharge port) are connected to the cooler chamber 509 that houses the cooler 501 for cooling the vegetable compartment 51. Therefore, a part of the cold air supplied to the storage compartments (ice making compartment 31, freezer compartments 41, 61) in the freezing temperature zone is supplied to the vegetable compartment 51. Since there is high-humidity cold air in the vegetable compartment 51, by directly supplying dry cold air from the cooler chamber 509, dew condensation in the vegetable compartment 51 can be suppressed as described above.

[0145] In addition, the refrigerator 1 has a damper 508 that switches the presence or absence of discharge of the cold air passing through the discharge ports 506 and 507. By opening the damper 508, the discharge ports 506 and 507 communicate with the cooler chamber 509, and the cold air is discharged from the discharge ports 506 and 507. On the other hand, by closing the damper 508, the communication between the discharge ports 506 and 507 and the cooler chamber 509 is released, and the discharge of the cold air from the discharge ports 506 and 507 is stopped. The opening and closing of both the discharge ports 506 and 507 can be switched by one damper 508 as in the present embodiment, or the opening and closing of the discharge ports 506 and 507 can be switched by two dampers 508.

[0146] The cold air discharged per unit time from the discharge port 507 is more than the cold air discharged per unit time from the discharge port 506. Thereby, vegetables and the like stored in the container 52 can be sufficiently indirectly cooled in a state of being separated by the wall surface of the container 52. Moreover, the cold air can flow along the lower surface of the heat insulation wall 301 through the discharge port 506 with a relatively small air volume, and dew condensation on the lower surface can be suppressed.

[0147] The amount (air volume) of the cold air discharged from the discharge ports 506 and 507 can be adjusted, for example, by changing the ratio of the cross-sectional areas of the air passages 526 connected to the discharge port 506 and the air passages 527 connected to the discharge port 507. For example, when the cold air discharged from the discharge port 507 per unit time is more than the cold air discharged from the discharge port 506 per unit time, it is sufficient to make the cross-sectional area of the air passage 527 connected to the discharge port 507 larger than the cross-sectional area of the air passage 526 connected to the discharge port 506. In addition, when two air dampers 508 are used, the air dampers 508 may be opened and closed in such a way that the opening time of the discharge port 507 is longer than the opening time of the discharge port 506 per unit time.

[0148] In addition, a fin-shaped seal (packing) 7 may be provided at the lower rear end of the upper container 52a. The fin-shaped seal 7 is provided over substantially the entire width of the lower rear end of the upper container 52a in order to block the gap between the lower rear end of the upper container 52a and the upper rear end of the lower container 52b except for a part (except for the vicinity of the left and right ends in the present embodiment). Thereby, it is possible to suppress the excessive intrusion of the cold air from the outlet 507 into this gap.

[0149] Figure 9 It is a perspective view of the heating mechanism 504 provided in the heat insulation wall 601 that separates the vegetable compartment 51 and the freezer compartment 61. The refrigerator 1 has a heating mechanism 504 in the heat insulation wall 601 that heats the bottom surface of the vegetable compartment 51. The heating mechanism 504 is provided in the heat insulation wall 601 that separates the vegetable compartment 51 and the freezer compartment 61. In the example of the present invention, the heating mechanism 504 is a plate heater and is built in the heat insulation wall 601. Since the freezer compartment 61 is arranged below the vegetable compartment 51, the heat insulation wall 601 is easily cooled by the cold air in the freezer compartment 61. Therefore, due to the high-humidity cold air present in the vegetable compartment 51, condensation easily occurs on the upper surface of the heat insulation wall 601. Then, by heating the heat insulation wall 601 using the heating mechanism 504, it is possible to suppress the condensation on the upper surface of the heat insulation wall 601. In addition, the heating mechanism 504 can also be used for heating the vegetable compartment 51 when the vegetable compartment 51 is too cold.

[0150] The heating mechanism 504 has a support member 541 and a heating wire 542 disposed on the upper surface of the support member 541. The heating wire 542 is connected to the power supply (not shown) of the refrigerator 1. By the control device 500 ( Figure 2When the heating wire 542 is energized, the heating wire 542 generates heat, and can heat the upper surface of the heat insulation wall 531, that is, the bottom surface of the vegetable compartment 51. The heating mechanism 504 can always heat the vegetable compartment 51, or can heat intermittently at any timing, for example. In the case of intermittent heating, specifically, when the cold air passing through the discharge port 507 is discharged, the discharged cold air goes to the bottom surface of the vegetable compartment 51, so the bottom surface is likely to condense. Therefore, for example, the heating mechanism 504 can be used for heating when the cold air passing through the discharge port 507 is discharged. Thereby, supercooling near the bottom surface can be suppressed.

[0151] Figure 10 It is a plan view of the vegetable compartment 51. The discharge port 506 is arranged at a position deviated to either the left or the right from the center in the left-right direction of the vegetable compartment 51 when viewed from above. In the illustrated example, the discharge port 506 is arranged to be deviated to the left. The discharge port 506 also discharges cold air to the side wall surface 622 on the opposite side of the side wall surface 621 of the vegetable compartment 51 close to the discharge port 506. Thereby, the cold air can also reach the side wall surface 622 where the cold air is difficult to reach because it is relatively far from the discharge port 506. In the example of the present invention, the discharge port 506 discharges cold air in at least two directions, namely, the front direction of the refrigerator 1 and the direction of the side wall surface 622. Among them, the discharge port 506 mainly discharges cold air in the front direction of the refrigerator 1.

[0152] Figure 11 It is a block diagram showing the specific hardware structure of the control device 500. The control device 500 is a control device that controls the operation of the refrigerator 1. The control is, for example, the control of a refrigeration cycle (not shown) including coolers 201 and 501, the rotation control of the fan 505, the opening and closing control of the damper 508, the energization control of the heating mechanism 504, etc.

[0153] The control device 500 includes, for example, a CPU (Central Processing Unit) 1001, a RAM (Random Access Memory) 1002, a ROM (Read Only Memory) 1003, an I / F (Inter Face) 1004, a bus 1005, etc. The CPU 1001, the RAM 1002, the ROM 1003, and the I / F 1004 are connected via the bus 1005, for example. The control device 500 is realized by expanding a prescribed program stored in the ROM 1003 in the RAM 1002 and executing the program by the CPU 1001. The transmission and reception of signals and information between the control device 500 and various devices (such as servers) and an external network are performed by the I / F 1004 in terms of hardware.

[0154] The control device 500 discharges cold air through the discharge port 506 according to the temperature of the vegetable compartment 51. At the same time, the control device 500 discharges cold air into the vegetable compartment 51 at regular intervals. As described above, the cold air generated by one cooler 501 is discharged into the ice-making compartment 31, the freezer compartments 41, 61, and the vegetable compartment 51. Therefore, when the room temperature of the vegetable compartment 51 is within the set temperature range and cold air is not discharged into the vegetable compartment 51, but cold air is discharged into the freezer compartments 41, 61 because the room temperatures of the freezer compartments 41, 61 are not within the set temperature range, condensation may occur in the vegetable compartment 51. In addition, the relatively low-temperature and dry cold air discharged in the vegetable compartment 51 accumulates at the bottom, but the relatively high-temperature and high-humidity cold air rises and easily stays near the top surface of the vegetable compartment 51. Thus, the control device 500 discharges cold air into the vegetable compartment 51 at regular intervals regardless of the temperature of the vegetable compartment 51. Thereby, it is possible to suppress the relatively high-temperature and high-humidity cold air from staying near the top surface of the vegetable compartment 51 and to suppress condensation in the vegetable compartment 51.

[0155] The temperature of the vegetable compartment 51 is measured by, for example, a temperature sensor 603 provided in the vegetable compartment 51 ( Figure 13 ). In addition, the fixed time for discharging cold air, that is, the regular interval, may be constant. For example, it may also be changed according to the season, the room temperature, and other environments where the refrigerator 1 is placed. For example, it can be relatively short in winter when the temperature is low and relatively long in summer when the temperature is high.

[0156] Figure 12 FIG. is a view of the vegetable compartment 51 when viewed from the front with the container 52 stored therein. As described above, the discharge port 506 is located at a position higher than the upper end of the container 52 or is disposed near the upper end of the container 52. Therefore, in the Figure 12 showing the state where the door 6 closing the vegetable compartment 51 is removed, the discharge port 506 can be seen from the front side in most cases. In the illustrated example, since the discharge port 506 is disposed at a position higher than the upper end of the container 52, the discharge port 506 can be seen from the front side.

[0157] Figure 13 FIG. is a view of the vegetable compartment 51 when viewed from the front with the container 52 removed. By removing the container 52, the discharge port 507, the temperature sensor 603, and the return port 510 disposed on the back side of the container 52 are exposed on the front side. A heat insulating wall 503 is disposed on the back side of the vegetable compartment 51. As described above, on the surface of the heat insulating wall 503 facing the vegetable compartment 51, a back wall 571 of the back covering member 521 is provided. The back wall 571 has a rectangular shape in the front view of the vegetable compartment 51 and has four corners 552.

[0158] On the rear wall 571 of the vegetable compartment 51, an outlet 506 and a return port 510 for returning the cold air of the vegetable compartment 51 are arranged on or near the diagonal line L1 in the front view of the vegetable compartment 51. The diagonal line L1 is a line segment connecting two diagonally opposite corners 552 to each other. In the example of the present invention, the outlet 506 and the return port 510 are arranged near the diagonal line L1. Thereby, the outlet 506 and the return port 510 can be made as far apart as possible, and the dew condensation suppression effect on the top surface of the vegetable compartment 51 can be improved. In addition, the vicinity of the diagonal line L1 means between the diagonal line L1 and an axis L2 extending in a direction intersecting at an angle θ with respect to the diagonal line L1, for example, within ±20°.

[0159] In the illustrated example, the outlet 506 is arranged near the corner 552. In addition, the return port 510 is arranged near the corner 552 opposite to the corner 552 where the outlet 532 is arranged.

[0160] Figure 14 It is a view of the vegetable compartment 51 when viewed from the front with the rear cover 521 and the container 52 removed. A heat insulating member 513 as a vacuum heat insulating member is provided immediately behind the rear cover 521. The heat insulating member 513 has a shape that avoids the outlets 506 and 507, for example, a polygonal shape (a pentagonal shape in the illustrated example).

[0161] Figure 15 It is a sectional view showing the vicinity of the return port 510 in the vegetable compartment 51 cut in the front-rear direction. Figure 16 It is Figure 15 An enlarged view of part F. The refrigerator 1 successively has a cooler chamber 509 accommodating a cooler 501, a heat insulating member 513 as a vacuum heat insulating member, a rear cover 521 formed with a return port 510 for returning the cold air to the cooler chamber 509, and a vegetable compartment 51 from the rear to the front of the refrigerator 1. The high-humidity cold air in the vegetable compartment 51 flows into the return port 510 as shown by the thick solid arrows in Figure 16 and flows in the air passage 522. Thereby, the high-humidity cold air is concentrated around the return port 510.

[0162] As described above, the cooler 501 in the freezing temperature zone is arranged behind the vegetable compartment 51 and the freezer compartment 61 in a manner that straddles the vegetable compartment 51 and the freezer compartment 61. Therefore, although the heat insulation wall 503 arranged on the back side of the vegetable compartment 51 is provided with a heat insulation member 513, due to the cooler 501, the return port 510 arranged on the front side of the cooler 501 is easily cooled by the cooler 501. In addition, as described above, the heat insulation member 513 (the first heat insulation member) is a vacuum heat insulation member. For example, a vacuum heat insulation member has a core material inside and is arranged in a manner that covers the core material with a foil made of a metal (such as aluminum). Thus, the surface of the heat insulation member 513 is formed of metal, and the return port 510 arranged on the front side of the heat insulation member 513 is easily cooled by the cooler 501 arranged on the back side of the heat insulation member 513. If the return port 510 is cooled, at least one of the phenomena of dew condensation and frost formation is likely to occur near the return port 510 and in the air duct 522 through which high-humidity cold air circulates.

[0163] Then, between the air duct 522 connecting the return port 510 and the cooler chamber 509 and the heat insulation member 513 (the first heat insulation member), a heat insulation member 512 (the second heat insulation member) with a lower heat conductivity than the surface of the heat insulation member 513 is arranged. Thereby, it is possible to suppress the cooling of the high-humidity cold air passing through the heat insulation member 513, and it is possible to suppress dew condensation and frost formation at the return port 510, the surface of the heat insulation member 513, the air duct 522, etc.

[0164] The heat insulation member 512 is, for example, polystyrene foam (expanded polystyrene), a resin component, rubber, etc. The heat insulation member 512 may also be, for example, a heat insulation member that improves the heat insulation effect by including an air layer.

[0165] The air duct 522 is at least formed in front of (directly in front of) the heat insulation member 513 which is a vacuum heat insulation member. Thus, the high-humidity cold air passing through the air duct 522 can be suppressed from being cooled by the heat insulation member 512, and thus dew condensation and frost formation can be suppressed.

[0166] The return port 510 is arranged at a position overlapping with the part where the heat insulation member 513 is projected toward the front side of the refrigerator 1. That is, when observing the vegetable compartment 51 from the front side of the refrigerator 1, the return port 510 overlaps with the heat insulation member 513. Therefore, the high-humidity cold air around the return port 510 is easily cooled by the heat insulation member 513. However, by arranging the heat insulation member 512 between the return port 510 and the heat insulation member 513, it is possible to suppress the cooling of the high-humidity cold air around the return port 510, and it is possible to suppress dew condensation and frost formation.

[0167] In the example of the present invention, further, the air duct 522 is at least also located below the heat insulation member 513 (the first heat insulation member). Moreover, a heat insulation member 512 (the second heat insulation member) is arranged between the air duct 522 and the heat insulation member 513. Thereby, it is possible to suppress the cooling of the high-humidity cold air flowing below the heat insulation member 513, and it is possible to suppress dew condensation and frost formation.

[0168] Figure 17 is an exploded perspective view showing the structure of the back side of the vegetable compartment 51. However, in Figure 17 , the back cover member 521 is removed, and an exploded perspective view of the structure shown above Figure 14 is shown. In the vegetable compartment 51, from the front side to the back side of the refrigerator 1, there are provided, for example, a resin back cover member 521, a heat insulating member 512, a heat insulating member 513 as a vacuum heat insulating member, a heat insulating member 533 such as a foamed heat insulating member (polystyrene foam, etc.) having a portion in which the heat insulating member 513 is embedded, and a resin back panel 514, for example. Among them, the heat insulating walls 503 are constituted by the heat insulating members 512, 513, and 533 ( Figure 2 ).

[0169] The heat insulating member 533 is provided on the back side of the heat insulating member 513. Thereby, heat transfer from the heater 572 ( Figure 16 ) disposed on the opposite side of the heat insulating member 513 as viewed from the heat insulating member 533 can be suppressed. The heater 572 is a structure for defrosting the cooler 501. The power (heat generation amount per unit time) of the heater 572 is larger than the power (heat generation amount per unit time) of the above-described heating mechanism 504. In addition, a return port 612 is formed in the back panel 514. A groove 5031 into which the L-shaped heat insulating member 512 is inserted is formed in the heat insulating member 533.

[0170] Figure 18 is a view showing the structure of the back of the vegetable compartment 51 extracted. Figure 19 is Figure 18 an enlarged view of part G. The heat insulating member 512 is a pre-formed foamed heat insulating member. Thereby, the heat insulating member 512 can be arranged according to the structure of the air passage 522. The pre-formed foamed heat insulating member is not a so-called on-site foam that foams inside the heat insulating box 10 (refrigerator 1), but a pre-formed foamed heat insulating member that can be installed in the heat insulating box 10 (refrigerator 1) while remaining in its original state.

[0171] In addition, the heat insulating member 512 is exposed to the air passage 522. Thereby, the distance between the heat insulating member 513 and the air passage 522 can be shortened, and the heat insulating member 512 can be enlarged to improve the heat insulating effect.

[0172] The heat insulating member 512 has a bent structure that supports the front surface and the lower surface of the plate-shaped heat insulating member 513. With such a heat insulating member 512, the heat insulating member 513 can be fixed without using additional components for fixing the heat insulating member 513. However, components for fixing the heat insulating member 513 (such as tapes, etc.) can also be used assistively. In the example of the present invention, the heat insulating member 512 has an L shape, and the heat insulating member 512 is supported near the corner of the heat insulating member 512.

[0173] Figure 20 It is a perspective view of the container 52. In the container 52, an upper container 52a forming an upper space 523 and a lower container 52b forming a lower space 524 are arranged and configured in the vertical direction. Figure 21 It is a perspective view of the upper container 52a. Figure 22 It is a perspective view of the lower container 52b. Figure 23 It is Figure 20 The H-H sectional view of the container 52 shown.

[0174] A handle portion 52a1 is formed on the front wall of the upper container 52a. The handle portion 52a1 is formed to be recessed with respect to the flange portion 52a2 at the upper edge of the upper container 52a. Inner box sliding portions 52a3 formed at the upper parts of the left and right side walls of the upper container 52a are formed at substantially the same height position continuously with the flange portion 52a2. The inner box sliding portions 52a3 slide in the front-rear direction on support portions 112 (refer to Figure 5 ) formed on the left and right side walls of the inner box 11 when the door 5 is opened and closed. In addition, the heights of the upper ends of the front wall and the rear wall of the upper container 52a are formed to be lower than the heights of the upper ends of the left and right side walls. Thereby, the cold air (refer to Figure 6 , Figure 7 ) from the discharge port 506 provided at the rear of the upper container 52a can be efficiently guided to the space in front of the vegetable compartment 51 (the side closer to the user than the front wall of the upper container 52a).

[0175] At the lower parts of the left and right side walls of the upper container 52a, a plurality of (three in this embodiment) container sliding portions 52a4 are formed in the front-rear direction and are in contact with the sliding receiving portions 52b2 of the lower container 52b. Ribs 52a5 that are not in contact with the sliding receiving portions 52b2 are formed between the respective container sliding portions 52a4. In the lower container 52b, flange portions 52b1 that protrude upward with respect to the sliding receiving portions 52b2 are formed at the upper edges of the left and right side walls. The lower ends of the ribs 52a5 are formed at positions lower than the upper ends of the flange portions 52b1. The flange portions 52b1 and the sliding receiving portions 52b2 are formed to extend in the front-rear direction.

[0176] When the upper container 52a is pulled out or pushed back in the state where the door 5 is open, the container sliding portions 52a4 on the upper container 52a side slide in the front-rear direction in a state of being in contact with the sliding receiving portions 52b2 on the lower container 52b side. In addition, the ribs 52a5 are formed in a substantially L-shaped cross section so as to cover the upper side and the outer side of the flange portions 52b1. Thereby, it is possible to suppress the cold air from the discharge port 506 from invading the lower space 524 through the gap S generated between the upper container 52a and the lower container 52b.

[0177] The present invention includes the following technical ideas (including appendices).

[0178] [Technical Idea 1]

[0179] In an existing refrigerator, the cold air used in the refrigerating chamber flows into the vegetable chamber, and the vegetable chamber is cooled (paragraph 0015). Therefore, the cold air flowing into the vegetable chamber becomes high humidity due to the moisture in the refrigerating chamber, and condensation may occur in the vegetable chamber.

[0180] The problem to be solved by Technical Idea 1 is to provide a refrigerator capable of suppressing condensation in the vegetable chamber.

[0181] [Appendix 1-1]

[0182] A refrigerator, characterized by comprising:

[0183] A refrigerating chamber;

[0184] A first cooler chamber for accommodating a first cooler that generates cold air supplied to the refrigerating chamber;

[0185] A vegetable chamber for accommodating containers, disposed below the refrigerating chamber;

[0186] A freezer chamber adjacent to the vegetable chamber below the vegetable chamber; and

[0187] A second cooler chamber disposed behind the vegetable chamber, the second cooler chamber accommodating a second cooler that generates cold air supplied to the vegetable chamber and the freezer chamber;

[0188] A first air passage for guiding the cold air generated by the second cooler to the discharge port of the vegetable chamber; and

[0189] A second air passage for guiding the cold air generated by the second cooler to the discharge port of the freezer chamber.

[0190] [Appendix 1-2]

[0191] The refrigerator according to Appendix 1-1, characterized in that:

[0192] The second cooler is disposed so as to straddle the vegetable chamber and the freezer chamber,

[0193] and has a storage chamber with a freezing temperature zone adjacent to the vegetable chamber above the vegetable chamber and having a smaller capacity than the freezer chamber.

[0194] [Appendix 1-3]

[0195] The refrigerator according to Appendix 1-1, characterized by including:

[0196] The first heat-insulating wall that separates the second cooler chamber and the vegetable chamber;

[0197] The second heat-insulating wall that separates the vegetable chamber and the freezer chamber; and

[0198] An air outlet that is provided on the first heat-insulating wall within the height range of the container and is used to discharge cold air to the second heat-insulating wall.

[0199] [Supplementary Note 1-4]

[0200] The refrigerator according to Supplementary Note 1-1, characterized in that:

[0201] The container is divided into front and rear parts,

[0202] and has an air outlet for discharging cold air to the vegetable chamber,

[0203] the air outlet is arranged at a position above the upper end of the container and discharges cold air in at least one of the horizontal direction or the obliquely upward direction, or is arranged near the upper end of the container and discharges cold air in the obliquely upward direction.

[0204] [Supplementary Note 1-5]

[0205] The refrigerator according to Supplementary Note 1-1, characterized in that:

[0206] A heating mechanism capable of heating the bottom surface of the vegetable chamber is provided on the heat-insulating wall that separates the vegetable chamber and the freezer chamber.

[0207] [Technical Idea 2]

[0208] In an existing refrigerator, a freezer chamber is arranged above and adjacent to a vegetable chamber. However, in order to improve the assemblability of the refrigerator, sometimes a heat-insulating wall of a component separated from the heat-insulating box body is installed on the heat-insulating box body. In this case, the cold air in the freezer chamber may leak into the vegetable chamber through the gap of the later-installed heat-insulating wall. As a result, when the high-humidity air in the vegetable chamber comes into contact with the heat-insulating wall that separates the freezer chamber and the vegetable chamber, condensation may occur on the top surface of the vegetable chamber.

[0209] The problem to be solved by Technical Idea 2 is to provide a refrigerator capable of suppressing condensation on the top surface of the vegetable chamber.

[0210] [Supplementary Note 2-1]

[0211] A refrigerator, comprising:

[0212] A container;

[0213] A heat-insulating box body that forms a vegetable chamber for accommodating the container and a freezer chamber adjacent to the vegetable chamber above the vegetable chamber,

[0214] A heat insulation wall that separates the vegetable compartment and the freezer compartment and is a separate component from the heat insulation box body; and

[0215] A first air discharge port that discharges cold air to the vegetable compartment,

[0216] The first air discharge port is arranged at a position above the upper end of the container and discharges cold air in at least one of the horizontal direction or the obliquely upward direction, or is arranged near the upper end of the container and discharges cold air in the obliquely upward direction.

[0217] [Supplementary Note 2-2]

[0218] The refrigerator according to Supplementary Note 2-1, characterized in that:

[0219] On the rear wall of the vegetable compartment, when viewed from the front of the vegetable compartment, the first air discharge port and a return port for returning the cold air in the vegetable compartment are arranged on or near the diagonal line.

[0220] [Supplementary Note 2-3]

[0221] The refrigerator according to Supplementary Note 2-1, characterized in that:

[0222] It has a second air discharge port, which is arranged at a position lower than the upper end of the container and discharges cold air in at least one of the horizontal direction or the obliquely downward direction,

[0223] The first air discharge port and the second air discharge port are connected to a cooler chamber for accommodating a cooler for cooling the vegetable compartment.

[0224] [Supplementary Note 2-4]

[0225] The refrigerator according to Supplementary Note 2-3, characterized in that:

[0226] The cold air discharged per unit time from the second air discharge port is more than the cold air discharged per unit time from the first air discharge port.

[0227] [Supplementary Note 2-5]

[0228] The refrigerator according to Supplementary Note 2-1, characterized in that:

[0229] The first air discharge port is arranged at a position that is offset to either the left or the right from the center in the left-right direction of the vegetable compartment when viewed from above the vegetable compartment,

[0230] Moreover, cold air is discharged to the side wall surface opposite to the side wall surface of the vegetable compartment on the side closer to the first air discharge port.

[0231] [Supplementary Note 2-6]

[0232] The refrigerator according to Supplementary Note 2-1, characterized in that:

[0233] It has a control device that discharges cold air through the first row of outlets according to the temperature of the vegetable compartment and discharges cold air into the vegetable compartment at regular intervals.

[0234] [Supplementary Note 2-7]

[0235] The refrigerator according to Supplementary Note 2-1, characterized in that:

[0236] It has a first cooler for cooling the refrigerating compartment and a second cooler for cooling the vegetable compartment and the freezing compartment.

[0237] The second cooler is arranged on the back side of the vegetable compartment and the freezing compartment so as to straddle the vegetable compartment and the freezing compartment.

[0238] [Technical Idea 3]

[0239] In an existing refrigerator, the return air duct of the vegetable compartment is provided on the side of the vacuum heat insulating member ( Figure 15 ). Since there is a cooler behind the vacuum heat insulating member ( Figure 9 ), the vacuum heat insulating member is easily cooled by the cooler. As a result, if the high-humidity cold air in the vegetable compartment flows into the return air duct provided near the cooled vacuum heat insulating member, the high-humidity cold air is cooled in the return air duct, and condensation may occur.

[0240] The problem to be solved by Technical Idea 3 is to provide a refrigerator that can suppress condensation caused by the return cold air from the vegetable compartment.

[0241] [Supplementary Note 3-1]

[0242] A refrigerator, characterized in that:

[0243] From the rear to the front of the refrigerator, it successively has: a cooler chamber housing a cooler, a first heat insulating member serving as a vacuum heat insulating member, a back covering member forming a return port for returning cold air to the cooler chamber, and a vegetable compartment.

[0244] A second heat insulating member having a lower thermal conductivity than the surface of the first heat insulating member is arranged between the air duct connecting the return port and the cooler chamber and the first heat insulating member.

[0245] [Supplementary Note 3-2]

[0246] The refrigerator according to Supplementary Note 3-1, characterized in that:

[0247] The cooler generates cold air that can be supplied to the storage compartments in the freezing temperature zone.

[0248] [Supplementary Note 3-3]

[0249] The refrigerator described in Attachment 3-1 is characterized in that:

[0250] The air passage is formed at least on the front surface of the vacuum heat insulating member.

[0251] [Attachment 3-4]

[0252] The refrigerator described in Attachment 3-1 is characterized in that:

[0253] The second heat insulating member is a pre-formed foamed heat insulating member.

[0254] [Attachment 3-5]

[0255] The refrigerator described in Attachment 3-1 is characterized in that:

[0256] The return port is arranged at a position overlapping with the part where the first heat insulating member is projected toward the front side of the refrigerator.

[0257] [Attachment 3-6]

[0258] The refrigerator described in Attachment 3-1 is characterized in that:

[0259] The air passage is arranged at least below the first heat insulating member,

[0260] The second heat insulating member is arranged between the air passage and the first heat insulating member.

[0261] [Attachment 3-7]

[0262] The refrigerator described in Attachment 3-6 is characterized in that:

[0263] The second heat insulating member is exposed to the air passage.

[0264] [Attachment 3-8]

[0265] The refrigerator described in Attachment 3-1 is characterized in that:

[0266] The second heat insulating member has a curved structure that supports the front surface and the lower surface of the plate-shaped first heat insulating member.

Claims

1. A cold storage, characterized in that, comprising: a refrigerating chamber; a first cooler chamber for housing a first cooler that generates cold air supplied to the refrigerating chamber; a vegetable chamber for housing containers, disposed below the refrigerating chamber; a freezer compartment adjacent to the vegetable chamber and disposed below the vegetable chamber; and a second cooler chamber disposed behind the vegetable chamber, the second cooler chamber housing a second cooler that generates cold air supplied to the vegetable chamber and the freezer compartment; a first air passage for guiding the cold air generated by the second cooler to an outlet of the vegetable chamber; and a second air passage for guiding the cold air generated by the second cooler to an outlet of the freezer compartment.

2. The cold storage according to claim 1, wherein: the second cooler is disposed so as to straddle the vegetable chamber and the freezer compartment, and has a storage chamber in a freezing temperature zone that is adjacent to and above the vegetable chamber and has a smaller capacity than the freezer compartment.

3. The cold storage according to claim 1, characterized in that, comprising: a first heat insulating wall that separates the second cooler chamber and the vegetable chamber; a second heat insulating wall that separates the vegetable chamber and the freezer compartment; and an outlet disposed on the first heat insulating wall within the height range of the container for discharging cold air to the second heat insulating wall.

4. The cold storage according to claim 1, wherein: the container is divided into front and rear parts, has an outlet for discharging cold air to the vegetable chamber, the outlet is disposed at a position above the upper end of the container and discharges cold air in at least one of a horizontal direction or an obliquely upward direction, or is disposed near the upper end of the container and discharges cold air in an obliquely upward direction.

5. The cold storage according to claim 1, wherein: a heating mechanism capable of heating the bottom surface of the vegetable chamber is provided on the heat insulating wall that separates the vegetable chamber and the freezer compartment.

6. The cold storage according to claim 1, characterized in that comprising: a container; a heat insulating box body that forms the vegetable chamber for housing the container and the freezer compartment adjacent to and above the vegetable chamber, a heat insulating wall that separates the vegetable chamber and the freezer compartment and is a separate component from the heat insulating box body; and a first outlet as the outlet for discharging cold air to the vegetable chamber, the first outlet is disposed at a position above the upper end of the container and discharges cold air in at least one of a horizontal direction or an obliquely upward direction, or is disposed near the upper end of the container and discharges cold air in an obliquely upward direction.

7. The cold storage according to claim 1, wherein: from the rear to the front of the cold storage, there are sequentially provided: the first cooler chamber, a first heat insulating member as a vacuum heat insulating member, a back covering member formed with a return port for returning cold air to the cooler chamber, and the vegetable chamber, a second heat insulating member having a lower thermal conductivity than the surface of the first heat insulating member is disposed between the air passage connecting the return port and the first cooler chamber and the first heat insulating member.

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