JP2002081836A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator in which a displacement of temperature within the refrigerator is reduced and a cooling performance is improved. SOLUTION: This refrigerator comprises of a refrigerator chamber formed inside a box; a cooling unit for cooling air in the refrigerator chamber; a cold air passage arranged at the rear wall surface of the refrigerator chamber and formed over the refrigerator chamber in an upward or downward direction of it; and a cold air flowing-in port communicating between the cold air passage and the refrigerator chamber to cause cold air from the cooling unit to flow into the refrigerator chamber. This refrigerator is further comprised of an air passage arranged between a plurality of air passages described above to cause the air in the refrigerator chamber to flow therein; a blower for feeding air contained in the refrigerator chamber to the air passage; and a blowing-out port arranged in the air passage so as to cause the air in the air passage to be blown into the refrigerator chamber. An opening where the blower sucks air is arranged below the lower-most shelf in the shelves in the refrigerator installed in an upward or downward direction inside the refrigerator chamber.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator having a plurality of storage compartments in a refrigerator and cooling each of the storage compartments.

[0002]

2. Description of the Related Art Current refrigerators are provided with a plurality of storage compartments so that a user can select and use an appropriate storage compartment according to the storage. In particular, in recent years, a refrigerator room, a vegetable room, and a freezer room (including an ice making room) have become mainstream from the top according to the temperature set for the storage room. The refrigerator compartment has a hinged door at the front, and the vegetable compartment and the freezer compartment have a drawer door at the front.

In general, a refrigerator has a storage room in a refrigerator, which is provided with an outlet through which air in the storage room flows out and an outlet through which air flows into the storage room, thereby forming a circulation path of air in the refrigerator. . A heat exchanger is provided on the circulation path, and the air cooled by the heat exchanger is supplied to the storage room along the circulation path by an air flowing means such as a fan.

That is, in such a refrigerator, the storage room through which the cool air passes is cooled, and the stored material is cooled by contacting the cool air or contacting the air cooled by the cool air by heat conduction. ing. Therefore, if the flow of cool air is stagnant or obstructed, the temperature of the air and the temperature of the stored material will increase in this portion.

[0005] Further, in order to maintain the inside of the refrigerator at a desired temperature, cool air must be supplied at an appropriate timing and amount and cry. On the other hand, since the heat enters and leaks from outside the storage room and the stored items are cooled by exchanging heat with cold air, the temperature of the cold air is lower than the set temperature of the storage room. Is common. Particularly, in a refrigerator, the storage temperature which is generally considered to be appropriate is 3 to 6 ° C, but the temperature of the supplied cool air is about -10 to -18 ° C. In this case, the stored matter placed near the outlet of the cool air to the storage room is always exposed to the cool air having a low temperature when the cool air flows in, and the part touching the cool air is unnecessary. Cooling, and the freshness may be reduced or damaged, which may adversely affect the stored product.

An example of a conventional technique for solving such a problem is disclosed in Japanese Patent Application Laid-Open No. 9-79729.
In this conventional technique, as means for suppressing the temperature unevenness in the refrigerator compartment, a passage in which a fan is housed is provided in the refrigerator compartment in addition to a passage for supplying cool air from a cooler.
In particular, an air passage is provided between a plurality of vertically arranged cool air passages in the refrigerator compartment, and a fan, an air inlet of the fan, and an air outlet from the fan are provided on the passage. This passage is covered with a light-transmitting cover that also serves as an interior light cover. The outlet provided in the passage cover is arranged to discharge the air sucked by the fan into the space between the plurality of shelves in the refrigerator compartment. With such a configuration, the stagnation of cool air in the refrigerator compartment, particularly in the lower stage of the shelf, is reduced, and the temperature of the refrigerator compartment in the vertical direction is averaged.

[0007]

However, in such prior art, the arrangement of the suction port of the circulation fan and the cool air outlet has not been sufficiently considered. For this reason, the cooling capacity of the shelf with the air inlet for the refrigerator has been reduced. That is, in the above-described conventional technology, no consideration was given to the point that the cool air could not be supplied to all the shelves in the storage room, and the temperature deviation in the storage room was not removed.

When the flow rate of the circulating air is higher than the speed of the cool air supplied from the cooler, when the suction port for the circulating air is provided between the lower shelves, the suction port for the circulating air is provided. It is difficult for the air in the refrigerator to rotate around the front of the shelf or below the shelf. For this reason, no consideration has been given to the fact that the cooling capacity at this portion, particularly at the door pocket on the lower side of the door, which is cooled by the air in the storage room going downward from above, is reduced.

In a conventional refrigerator, air in a refrigerator compartment is generally supplied to a vegetable compartment having a set temperature close to the refrigerator compartment. In the above-mentioned conventional technology, no consideration has been given to the point of efficiently supplying air from the refrigerator compartment to the vegetable compartment when providing a circulation passage in the refrigerator compartment to circulate room air. In particular, there has not been sufficiently considered a configuration for improving the efficiency of the circulation of the cool air that returns the cool air from the refrigerator compartment to the heat exchanger (cooler) through the vegetable compartment.

[0010] In recent years, the amount of cold air (the amount of cold air flow) supplied to the storage room has been increasing. An appropriate configuration for improving the cooling efficiency in the refrigerator has not been sufficiently considered.

It is an object of the present invention to provide a refrigerator in which the temperature unevenness in the refrigerator is reduced to improve the cooling performance.

[0012]

SUMMARY OF THE INVENTION The object of the present invention is to provide a refrigerating chamber formed inside a box, a cooler for cooling air in the refrigerating chamber, and a refrigerating chamber provided on a rear wall surface of the refrigerating chamber. A refrigerator comprising: a plurality of cold air passages formed in a vertical direction; and a cool air inlet through which the cool air passage communicates with the refrigerator compartment and cool air from the cooler flows into the refrigerator compartment. An air passage disposed between the cold air passages, through which the air in the refrigerator compartment flows, a blower for blowing the air in the refrigerator compartment through the air passage, and air in the air passage provided in the air passage blows out to the refrigerator compartment. And an opening through which the blower sucks air is provided below a lowermost shelf of an internal shelf vertically arranged inside the refrigerator compartment. .

A refrigerating chamber formed inside the box,
A cooler that cools the air in the refrigerator, a plurality of cool air passages provided on a rear wall surface of the refrigerator and formed in a vertical direction of the refrigerator, and communicating the cool air passage with the refrigerator. In a refrigerator provided with a cool air inlet through which cool air from a cooler flows into the refrigerator compartment, an air passage arranged between the plurality of cool air passages and through which the air in the refrigerator compartment flows, An opening provided in the air passage and blowing air from the air passage to the refrigerator compartment is provided in the air passage, and an opening for the blower to suck air in the refrigerator compartment is provided in the refrigerator. This is achieved by being arranged behind a storage room provided at the lower part of the room.

[0014] Alternatively, this is achieved by providing an opening through which the blower sucks air in the refrigerator compartment, behind the chilled compartment provided below the refrigerator compartment.

[0015] It is further achieved by providing a space provided below the storage room and an opening through which the air in the refrigerator room flowing through the space is sucked by the transmitter.

Still further, this is attained by arranging the opening below the rotation axis of the blower. Furthermore, this is achieved by the fact that the opening of the opening has a wide shape.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings.
This will be described below. FIG. 1 is a perspective view illustrating the appearance of a refrigerator according to a first embodiment of the present invention. FIG. 2 is a vertical cross-sectional view schematically illustrating the structure of the refrigerator shown in FIG. FIG. 3 is a vertical cross-sectional view illustrating the outline of the structure of the refrigerator shown in FIG. 1 as viewed from the front. FIG. 4 is a front view of the refrigerator compartment of the refrigerator shown in FIG. FIG. 5 is a perspective view illustrating a configuration of a rear part of the refrigerator compartment of the refrigerator illustrated in FIG. 1. FIG. 6 is a diagram illustrating a configuration of a circulating duct portion of the refrigerator in the refrigerator illustrated in FIG. 1. FIG. 7 is a diagram showing the structure of components constituting the refrigerated indoor circulation duct shown in FIG. FIG. 8 is a diagram showing a structure of components constituting the refrigeration room circulation duct shown in FIG. 6. FIG. 9 is a diagram showing the structure of components constituting the refrigeration room circulation duct shown in FIG. FIG. 10 is a cross-sectional view schematically showing the structure of the rear part of the refrigerator compartment of the refrigerator shown in FIG.
FIG. 11 is a cross-sectional view schematically showing the structure of the rear part of the refrigerator compartment of the refrigerator shown in FIG. FIG. 12 is a longitudinal sectional view schematically showing the structure of the refrigerator compartment of the refrigerator shown in FIG. FIG.
FIG. 12 is a front view showing the structure of the lower part of the refrigerator compartment of the refrigerator shown in FIG. 11. FIG. 14 is an enlarged cross-sectional view showing the structure of the lower rear portion of the refrigerator compartment of the refrigerator shown in FIG.

In FIG. 1, reference numeral 1 denotes a refrigerator main body, which is provided with an upper storage room having an opening / closing door at the top of the refrigerator and a plurality of storage rooms having drawer doors below the upper storage room. In this embodiment, the upper storage room is a refrigerator room,
The plurality of storage rooms having drawer doors are respectively a vegetable room, a switching room, an ice making room, and a freezing room. The refrigerator 1 has an opening / closing door 10, a drawer door 20,
30, 40, and 50 are provided.

Hereinafter, the overall structure of the refrigerator according to the present embodiment will be described in more detail with reference to FIG. FIG. 2 is a vertical cross-sectional view schematically illustrating the structure of the refrigerator shown in FIG.

In FIG. 2, the refrigerator main body 1 includes a box formed by filling a heat insulating material 4 between an outer box 2 and an inner box 3. Has a refrigerator compartment 100 provided with an opening / closing door 10 in front of it.
Is provided. Below the refrigerator compartment 100, a vegetable compartment 200 arranged with a drawer door 20 in front of each compartment.
A switching room 300 provided with a drawer door 30 in the front and an ice making room 400 provided with a drawer door 40 in the front are provided below the vegetable room 200. Also,
At the lowermost part of the refrigerator 1, a freezing room 500 provided with a drawer door 50 in front thereof is provided. As described above, the refrigerator 1 is formed by foaming and filling the heat insulating material 4 between the outer box 2 made of a steel plate and the inner box 3 made of a resin, but the opening / closing door 10 and the drawer doors 20, 30, 40, 50
Also has the same structure as the refrigerator body 1.

The refrigerating room 100 is a storage room set at a temperature of about 2 degrees to about 8 degrees in the refrigerator. This refrigerator room 100
Inside, a plurality of partitioning shelves 101 are provided in a vertical direction, and the inside of the refrigerator compartment 100 is divided into a plurality of storage spaces. Further, the refrigerator compartment 100 is provided with partition shelves 104 and 105 for partitioning the inside of the refrigerator compartment 100 in the left-right direction, and at least one of them can change the height of the shelf surface in the vertical direction of the refrigerator compartment. Is configured.

Further, a plurality of detachably formed inner sides of the opening / closing door 10 for opening and closing the front side of the refrigerator compartment 100, that is, the side facing the refrigerator compartment 100 with the door 10 in a flat state. A storage pocket 103 is provided.

On the front side of the refrigerator 1 at the opening / closing door 10, an operation unit 120 for setting the operation state of the refrigerator 1, displaying the operation state, and the like is provided. This operation display section 1
Reference numeral 20 denotes an operation unit 121 for performing operations such as setting of the operation state of the refrigerator 1 and a display unit 122 for displaying the operation state of the refrigerator 1.

In the lower part inside the refrigerator compartment 100, an ice temperature compartment 150 is provided which is separated from the refrigerator compartment 100.
The ice greenhouse 150 can be set at a temperature within a range of about -1 degree which is suitable for storing fresh fish, meat, and other processed products. Instead of the ice greenhouse, a chilled room which is set to a temperature of about + 1 ° C. which is suitable for storing tofu, dairy products, chilled foods and the like may be arranged. The ice greenhouse 150 is provided with a storage tray 151 which can be pulled out in the front-rear direction of the refrigerator. Further, a front portion of the ice temperature chamber 150 is formed in front of the ice temperature chamber 150 together with the tray 151, and the ice temperature chamber door 1 opens and closes when the tray 151 is pulled out / stored.
52 are provided. The storage tray 151 and the ice temperature chamber door 152 form a storage space for the ice temperature chamber 150.

On one side of the ice temperature chamber 150, a water supply tank 102 for an automatic ice making device is provided side by side with the ice temperature chilled chamber 150.

The vegetable room 200 mainly stores vegetables,
The temperature is adjusted so as to be a suitable set temperature. On the other hand, the vegetable room 200 is a storage room in which plastic bottles and the like can be stored. The vegetable compartment 200 is provided with a vegetable compartment storage case 201 which forms a storage space in the storage. The vegetable room storage case 201 is provided with a drawer door 20 provided on the front surface of the vegetable room 200 by a rail or the like provided on the inner wall side of the vegetable room 200 of the refrigerator body 1.
It is provided movably in the front-back direction.

The vegetable room storage case 201 includes a first vegetable room storage case 202 attached to a rail or the like, and is located above the first vegetable room storage case 202.
And a second vegetable compartment storage case 203 that is movable in the front-rear direction of the refrigerator 1 along the upper edge of the vegetable compartment storage case 202. These storage cases are provided with the drawer door 20.
Is closed, the first vegetable compartment storage case 202 and the second vegetable compartment storage case 203 are placed in the vegetable compartment 200.
The inside is provided so as to form a storage space in each container. The second storage case 203 is located at the upper rear of the first storage case 202 and has the first storage case 203.
Is provided so as to form a storage space 204 in the front of the storage case 202. Further, the second storage case 203 is interlocked with the first storage case 202 or independently in a state where the drawer door 20 is opened, in the front-rear direction at the upper edge of the first storage case 202. It is provided so that it can slide and move.

With this structure, when the drawer door 20 is pulled out, the first storage case 202 is pulled out, so that food can be taken in and out. Further, the first storage case 202 and the second storage case 203 are configured to be removed from the drawer door 20 to perform cleaning.

Further, with the drawer door 20 closed,
A high storage space 204 is secured in the front in the first storage case 202, and has a structure suitable for a user to sort and store foods such as vegetables according to the size. The freshness of the food can be maintained, and the storability can be improved. In this example, the vegetable room 2
The storage volume of 00 is the second largest in comparison with other storage volumes.

The ice making room 400 is a storage room which is set at a temperature of about −18 ° C. and performs ice making and storage. The ice making room is provided with an ice making device 401 for making ice by collecting water supplied from the water supply tank 102, and an ice storage case 402 for receiving and storing the ice formed here below. The ice storage case 402 is provided so as to be movable in the front-rear direction together with the drawer door 40. The ice storage case 402 forms a storage space for the ice making chamber 400.
The ice making device 401 does not need to be particularly provided, and a shelf may be provided at an upper portion in the ice making room 400 and an ice tray may be provided on this shelf. In addition, since the cold air is supplied from the first blower fan 662 without passing through another storage room, the ice making room 400 has a storage room configuration with little odor transfer.

In the ice making room 400, the ice storage case 401 is pulled out by pulling out the drawer door 40.
Ice can be easily taken out and the drawer door 4
It is configured so that it can be removed and cleaned.

Further, an ice making device 401 is provided on the ceiling of the ice making room 400, and the ice made by the ice making device is dropped and stored in the ice storage case 402. And since the ice making room 400 is dedicated to ice making,
It has the smallest storage volume compared to other storage rooms.

The freezing room 500 is a storage room mainly for storing frozen foods, and is set to, for example, an inside temperature of about -18 to -25 degrees. In the freezer compartment 500, a freezer compartment storage case 501 is provided. Freezer compartment storage case 501
The freezer compartment storage case 501 constitutes a storage space for the freezer compartment 500. The freezer compartment storage case 501 is the first
And the first freezer compartment storage case 5, which is located above the first freezer compartment storage case 502.
And a second freezer compartment storage case 503 movable in the front-rear direction along the upper edge of the second freezer compartment 02. In these storage cases, the first freezer compartment storage case 502 and the second freezer compartment storage case 503 are in a state where the drawer door 50 is closed.
A storage space is formed in each case in the freezing room 500. In the second freezer compartment storage case 503, a metal tray for improving the freezing efficiency of the food to be stored is provided on the bottom surface, and mainly the food that needs quick freezing or the frequently used food is frequently used. The storage case is suitable for storing frozen food.

The first freezer compartment storage case 502 is supported by a drawer mechanism such as a rail connected to the drawer door 50, and can be drawn out and stored as the drawer door 50 moves in the refrigerator longitudinal direction. The second freezer compartment storage case 503 is located at the upper rear of the first freezer compartment storage case 502 and is provided so as to form a storage space 504 in the front inside the first freezer compartment storage case 502. . Further, it is provided so as to slide on the upper edge of the first freezer compartment storage case 502 in conjunction with the first freezer compartment storage case 502 or independently with the drawer door 50 opened.

With this two-stage structure, the first freezer compartment storage case 502 stores infrequently used stock foods,
If the frequently used food is stored in the second freezer compartment storage case 503, the second freezer compartment storage case
Since the food stored in the storage unit 03 can be taken in and out, the usability of the refrigerator can be improved. When the drawer door 50 is closed, the second freezer compartment storage case 503 is located behind the freezer compartment 500,
Separation and storage can be performed according to the size of the food to be stored, and the storage of food can be improved. Furthermore, this freezer 5
At 00, the freezer compartment storage case 501 is pulled out by pulling out the drawer door 50, and the freezer compartment storage case 501 can be removed from the drawer door 50 for cleaning. In addition, the freezing compartment 500 in this embodiment has a storage volume of a size substantially equal to that of the vegetable compartment 200.

The switching room 300 is provided with a temperature inside the refrigerator compartment 100 from a temperature inside the refrigerator compartment 100,
The temperature in the refrigerator can be set in a range of about +8 degrees to -18 degrees. By setting the temperature in the refrigerator freely, a wide range of foods from refrigerated foods to frozen foods can be stored.
Although not shown, the switching chamber 300 includes a storage case 301 movable in the front-rear direction via a rail or the like together with the drawer door 30 inside the storage room.
1 constitutes a storage space of the switching room 300.

In the switching room 300, the storage case 301 is pulled out by pulling out the drawer door 30, so that the food can be easily taken in and out, and the storage case 301 can be removed from the drawer door 30 for cleaning. It is configured to be able to. In this embodiment, the storage volume of the switching room 300 is the fourth largest as compared with other storage rooms.

In this embodiment, the switching room 300 is
0 and the freezing room 500, so that the switching room 3
Even if the inside temperature of 00 is variously changed, the storage rooms in the same or similar inside temperature zone are arranged close to each other, and the influence of the temperature on the storage rooms is reduced. Thereby, it is suppressed that a partition wall provided with a heat insulating material more than necessary is provided,
It is possible to secure a large internal volume.

Further, the refrigerator 1 is provided with a machine room 602 at a lower rear portion of the refrigerator, and a compressor 601 is provided in the machine room 602.
Is provided. The machine room 602 includes a freezer room 500
Is located just behind the inner wall surface of the freezing room 500.

The freezer compartment 5 is located above the machine room 602.
00 and a rear of the switching room 300 and the ice making room 400, and a first room provided at a position facing the freezing room 500 and the inner wall surfaces of the switching room 300 and the ice making room 400.
A cooler room 660 is provided. This cooler room 660
A first cooler 661 is housed therein, and a drain plate 614 is provided below the first cooler 661. Above the first cooler 662, a first cooling fan (blower) 661 that supplies cool air cooled by the first cooler 662 to the switching room 300, the ice making room 400, and the freezing room 500 is provided as described later. ing. These are arranged vertically.

As will be described later, the first cooling chamber 660
Is supplied to the freezing chamber 500, the switching chamber 300, and the ice making chamber 4 through a first cold air passage 606.
00 is supplied.

Further, a second cooler room 670 is arranged behind the vegetable room 200 and behind a wall surface provided with a heat insulating material provided behind the storage case 201 in the vegetable room. Inside the second cooler chamber 670, the second cooler 6
71 are arranged. Above the second cooler 671, the refrigerator compartment 100, the vegetable compartment 200, or the ice hot compartment 150
In addition, a second cooling fan 672 for supplying cool air cooled by the second cooler 671 is provided. This fan 6
72 is provided so as to face the wall surface behind the case.

As will be described later, the cooling chamber 100 and the second cooling chamber 670 are communicated with each other above the second cooling chamber 670 so that the cold air generated in the second cooling chamber 670 is cooled. A second cold air passage 607 into which the air flows is formed. The cool air supplied from the second cooling chamber 670 is
Is supplied to the refrigerator compartment 100 through the cold air passage 607.

Further, a third cool air passage 60 having a circulation fan 608 for circulating the cool air supplied to the cool room 100 in the cool room 100 is provided in the cool room 100.
9 is provided. The third cool air passage 609 includes a circulation fan 608 for guiding cool air and the circulation fan 60.
An outlet 623 provided with an outlet 610 for supplying the cool air guided by the cooling unit 8 into the refrigerator compartment 100;
0 and a circulation suction part 622 for taking in cool air from the refrigerator compartment 100.

As will be described later, the switching chamber 300
A cool air amount distributor 612 for adjusting the amount of cool air supplied to the switching chamber 300 is provided behind the switch room 300.

In this embodiment, the machine room 602, the first cooling room 660, the cool air distributor 612, and the second cooling room 670 are connected to the drawer doors 20, 30, 4
It is arranged in an ineffective space that is difficult to use as a storage space formed behind each storage room provided with 0 and 50.

That is, the drawer doors 20, 30, 40,
Due to its structure, 50 is designed so that it does not come off from the drawer mechanism such as a rail when it is pulled out to the front.
It is necessary to wrap these draw-out mechanisms and the housing. An invalid space that is difficult to use as a storage space is formed behind the wrapped portion, that is, behind the storage case that forms the storage space of each storage room.

In this embodiment, the machine room 602, the first cooling room 660, and the second cooling room 67
0, by arranging the cool air amount distributor 612, it is possible to efficiently arrange each device for performing a refrigeration cycle,
The whole refrigerator can be made compact and its usability can be improved.

In this embodiment, a first heat insulating partition having a heat insulating material inside is provided between the vegetable room 200 and the switching room 300 and the ice making room 400 arranged alongside the switching room 300. A wall 613 is provided. This allows
The vegetable room 200, the switching room 300, and the ice making room 40
The transfer of heat between 0 and 0 is reduced.

Next, the structure of the refrigerator compartment of the refrigerator according to the present embodiment will be further described with reference to FIG. FIG.
It is a front view of the refrigerator compartment of the refrigerator shown in FIG.

In the refrigerating compartment 100, the variable shelves 10 capable of changing the height of the shelves by a simple change simply by turning them upside down.
4 are provided. In this embodiment, a storage space formed above the ice temperature chamber 150 is formed by the three partitioning shelves 101. Then, the partition shelf 101 provided at the lowermost stage is divided into two right and left, and one side is fixed shelf 105,
By making the other side a variable shelf 104, the refrigerator compartment 10
The storage space formed in 0 is divided into four.

The refrigerator of this embodiment has a total storage volume V of 470 L, and a storage volume VR of the refrigerator compartment 100.
243 L, and the storage volume VV of the vegetable compartment 200 is 103
L, the storage volume VS of the switching room 300 is 26L, the storage volume VI of the ice making room 400 is 13L, and the freezing room 500
Is set to 85L.

Next, the flow of cool air in the refrigerator of this embodiment will be described with reference to FIG. FIG. 3 is a vertical cross-sectional view illustrating the outline of the structure of the refrigerator shown in FIG. 1 as viewed from the front.

First, the flow of cool air supplied to the freezing room 500, the switching room 300, and the ice making room 400 will be described with reference to FIG. The cool air cooled by the first heat exchanger 661 flows into the first cool air passage 606,
The first cool air passage 606 supplies cool air to the freezing room 500, the ice making room 400, and the switching room 300. The first cold air passage 606 is connected to the freezer compartment 500.
Passage 606a for supplying cold air to the ice making chamber 40
A branch passage 606b for supplying the cool air to the cooling chamber 0 and the cool air distributor 612 are formed by branching into a branch passage 606c for supplying the cool air adjusted by the cool air distributor 612 to the switching chamber 300. .

The cool air flowing into the first cool air passage 606 flows into the branch passage 606a and is guided by the first blower fan 662 to the branch passage 606b and the branch passage 606c. The branch passage 60
The cold air flowing into the cooling chamber 6a is supplied from the outlets 619 and 620 to the freezing chamber 500, and after cooling the freezing chamber 500, is guided to the cool air return port 690 and is introduced into the first cooling chamber 6a.
It returns to 60. The cool air flowing into the branch passage 606b flows from the outlet 681 to the ice making chamber 400.
After cooling the ice making chamber 400, it is guided to the cool air return port 691 and returns to the first cooling chamber 660 via the cool air return port 690. The cool air flowing into the branch passage 606c is supplied to the cool air distributor 61.
2, the amount of cool air is adjusted in accordance with the setting state of the switching room 300, and after adjusting the amount of cool air, cool air is supplied from the outlet 682 to the switching room 300, and after cooling the switching room 300, the cool air return port It is guided to 692 and returns to the first cooling chamber 660 via the cool air return port 690.

Next, the flow of cold air supplied to the refrigerator compartment 100 and the vegetable compartment 200 will be described.

The cool air cooled by the second heat exchanger 671 is guided by the second blower fan 672, flows forward from the second blower fan 672, and flows into the second cool air passage 607. . Further, the cold air passage 6
07, cool air is supplied to the refrigerator compartment 100 via a cool air outlet 611. The second cool air passage 607 is formed by branching into a plurality of passages behind the refrigerator compartment 100. In this embodiment, as shown in FIG. 3 and FIG. 4, the second cool air passage 607 is branched into two branch passages 607a and 607b which are Y-shaped when viewed from the front.

In the refrigerator according to this embodiment,
The third cool air passage 609 is formed at a central portion between the branch passages 607a and 607b branched right and left. That is, in the present embodiment, the refrigerating room 10
Third cool air passage 609 for supplying cool air while circulating cool air
Are provided between the branch passages 607a and 607b which are formed to branch right and left behind the refrigerator compartment 100.

One of the features of the refrigerator 1 of the present embodiment is that the refrigerator 100 is provided with a circulation fan 608 on the third cool air passage in order to improve the circulation of cool air in the refrigerator 100. , Temperature deviation in the refrigerator compartment 100 (temperature unevenness)
The point is that the cooling efficiency has been improved by reducing it. This refrigerator room 10
The configuration for circulating the room air provided at 0 will be described below with reference to FIG.

As described above, the third cool air passage 609 includes the circulation fan 608 for guiding the cool air, and the outlet 610 for supplying the cool air guided by the circulation fan 608 into the refrigerator compartment 100. It comprises a blow-out part 623 and a circulating suction part 622 formed below the refrigerator compartment 100 and taking in cool air from the refrigerator compartment 100.
The cool air in the refrigerator compartment 100 is guided to the third cool air passage 609 through the circulation fan 608, and is blown out from the plurality of outlets 610 into the refrigerator compartment 100, whereby the air in the refrigerator compartment 100 is cooled. It is configured to perform the circulation.

The outlet 610 is connected to the partition plates 101, 10
A plurality of openings are provided corresponding to the spaces between the shelves partitioned by 4,105. In this embodiment, the openings 610a, 610b, 610c, and 610d are provided from above. Further, an outlet 611 through which the cool air from the second cooler room 670 flows into the refrigerator compartment is provided corresponding to the space between the shelves, and in the present embodiment, 611a, 611 from the top.
11b, 611c, and 611d.

With this configuration, the cool air from the second cooler chamber supplied from the outlet 611 to the space between the shelves is mixed with the cool air blown out from the outlet 610 to form the mixed air. Is circulated in the refrigerating room 100, thereby reducing the non-uniformity of the temperature in the refrigerator and efficiently cooling the refrigerator. Note that 611d may be omitted.

A pair of lighting devices 110 is provided between the second cool air passage 607 and the third cool air passage 609.
Is provided. The lighting device 110 is disposed substantially at the center in the vertical direction in the refrigerator compartment 100. With such a configuration, the inside of the refrigerator compartment 100 can be efficiently illuminated. Further, the lighting device 110 is covered with a wall surface (front panel 112) formed of an opaque translucent material on the front surface, and the partition shelf 101 and the top plate of the ice temperature chilled room 150 are formed of a transparent material. By doing so, the inside of the refrigerator compartment 100 can be illuminated to every corner.

In this embodiment, the refrigerator compartment 100
In order to quickly eliminate temperature unevenness in the inside, the branch passage 6
07a and the branch passage 607b.
There is provided a cool air direction changing means 700 for changing the wind direction of the cool air circulation in 00. Thereby, for example, when hot food is stored in the refrigerator compartment 100, the refrigerator compartment 100
It is possible to quickly uniform the temperature unevenness generated in the inside.
The circulating cooling structure will be described later in detail.

The cool air guided by the second blower fan 672 flows into the branch passages 607a and 607b. The cool air that has flowed into the branch passages 607a and 607b flows into the refrigerating room side of the branch passages 607a and 607b, and
The cooling of the refrigerating room 100 is performed by flowing into the refrigerating room 100 from a plurality of outlets 611 formed in accordance with 1, 104, and 105.

The cool air supplied to the refrigerator compartment 100 flows forward while cooling the storage space of the refrigerator compartment 100 partitioned by the partition shelf 101, and flows into the refrigerator compartment opening / closing door 1.
0, and reaches the storage pocket 103 provided inside. The cool air that has reached the storage pocket 103 cools the space in the storage pocket 103 and the stored items, and then stores the storage pocket 103 and the plurality of partition shelves 10.
It descends along a vertically continuous gap formed between the front ends of the refrigerator compartments 1, 104, and 105, or descends through a notch opening such as a slit formed in the pocket 103. To reach. In particular, the air blown out to the space between the shelves immediately above the ice greenhouse 150 comes into contact with the stored goods stored between the shelves and cools them, and then reaches the storage pocket portion 103 inside the opening and closing door 10. As it descends, this part can be cooled.

Although not shown in FIGS. 2 and 3, cold air is supplied to the ice temperature chamber directly from the second cold air passage 607 from an outlet provided at the back of the ice temperature chamber 150. . The cold air that has flowed into the ice greenhouse is stored in the storage tray 152.
After cooling the inside, the air is blown out to the front side of the storage tray 152, mixed with the cool air descending from above and reaches the bottom of the refrigerator compartment 100.

The cool air reaching the bottom of the refrigerator compartment 100 is guided to a connecting passage 625 formed in the bottom of the refrigerator compartment 100 as shown in FIG.
After the cool air flows into the vegetable room 200 through the container and cools the vegetable room 200, the cool air returns to the second cool room 67 through the cool air return port 629 through the outside of the vegetable room storage case 201.
It returns to zero.

Next, the connection passage 625 into which the cool air that has cooled the refrigerator compartment 100 flows will be described with reference to FIG. In this embodiment, the connection passage 625 is connected to the refrigerator compartment 1.
A partition plate 170 that is a member that separates the food room 200 from the vegetable room 200.
Connecting passage 625a provided in front of
625b provided below the ice greenhouse tray 152 at the rear of 5a. These connection passages 625 are formed, for example, by a plurality of slit-shaped openings, and the cool air that has passed through these slits flows into the vegetable compartment 200 from the ceiling side of the vegetable compartment while descending.

The cool air flowing into the vegetable room 200 flows outside the vegetable room storage case 201, and then is guided to a cool air return port 629 provided on the rear wall of the vegetable room 200.
After passing through the cool air return port 629, the second cooling chamber 67
Returned to 0.

More specifically, the air in the refrigerator compartment 100 that has flowed into the connecting passage 625a is supplied to the upper front portion (in this embodiment, the upper front end portion) of the lid 205 covering the upper surface of the vegetable compartment container 201 and the partition plate. 170 flows toward the front of the refrigerator, and then flows downward through the space provided between the container 201 and the drawer door 20, and the bottom of the vegetable compartment 200 and the vegetable compartment container 2
01, flows toward the rear of the refrigerator, and returns to the second cooler room 670 provided on the back wall surface of the vegetable room.
Flow into 29. On the other hand, the air in the refrigerator compartment flowing into the connection passage 625b flows through the space between the lid 205 and the partition plate 170 toward the rear of the refrigerator, and then flows between the vegetable compartment container 201 and the back wall of the vegetable compartment 200. Flows downward through the refrigerator, partially mixes with the air flowing into the vegetable compartment 200 from the connection passage 625a, and flows into the return port 629. Between the connecting passages 625a and 625b, means for separating the space between the lid 205 and the partition plate 170 therebetween, for example, a rib on the plate may be provided.

As described above, in this embodiment, a space is provided between the vegetable room container 201 and the inner wall surface of the vegetable room 200, and the cool air flowing into the vegetable room 200 flows through this space.
A passage through which cool air flows while wrapping around the outside of the vegetable compartment storage case 201 is provided. The air that has flowed into the vegetable compartment 200 flows through this passage so as to wrap the vegetable compartment container 201, and efficiently cools the storage in the vegetable compartment container. Also,
The air in the refrigerator compartment 100 that has flowed into the vegetable compartment 200 mainly divides in two directions, flows around the vegetable compartment container 201 and returns to the second cooler compartment 670, so that the cold air in the refrigerator compartment 100 and the vegetable compartment 200 is cooled. The efficiency of circulation is improved.

The cold air that has reached the return port 629 at the rear of the vegetable compartment container after being divided in two directions,
Flows downward along a passage provided between the rear wall member provided with the heat insulating material and a partition wall provided with a heat insulating material provided behind the rear wall member, and flows into a second cooler chamber 670 provided on the partition wall. From the opening of the second cooler 671. A heater that is provided below the second cooler 671 and melts the lower portion attached to the cooler is provided at a position facing the opening. The return port 629 is provided above the opening, and the lower end of the return port 629 is above the lower end of the opening. Further, a wall surface is provided below the return port 629 and in front of the refrigerator at the opening, so that air is prevented from flowing into the storage room from the return port 629 through the opening.

Next, the structure of the circulating air blowing section 623 provided in the third cool air passage 609 and provided with the cool air direction changing means 700 for changing the direction of blowing cool air into the refrigerator compartment 100 will be described with reference to FIGS. This will be described with reference to FIG.

First, referring to FIG.
The back wall of will be described. FIG. 5 is an exploded view of parts on the rear wall of the refrigerator compartment 100. As shown in FIG. 4, the rear wall of the refrigerator compartment 100 includes a rear panel 111, which constitutes most of the rear wall, and a front panel 112 that covers the front of the rear panel 111.

The back panel 111 is mounted on the upper inner wall surface on the back side of the refrigerator, leaving a peripheral edge.
The rear panel 111 can be considered as being divided into a first flat portion 111a and a second flat portion 111b, and the first flat portion 111a has a lower end continuous with the upper end of the partition wall 170 shown in FIG. Thus, the upper portion of the rear wall of the vegetable compartment 200 is configured to cover the upper portion of the second cooling compartment 670. The first flat portion 111a constitutes a wall on the back side of the ice temperature chamber 150, and has an outlet 116 for cool air from the second cooler chamber to the ice temperature chamber, and the third air port 116 below the cold air outlet 116. An opening 622 which is a suction portion of the cooling passage 609 is provided. The second flat portion 111b formed above the first flat portion 111a is connected to the branch passages 607a and 607b to form the refrigerator compartment 1.
00 and the third cold air passage 60
9 in which the refrigeration compartment 10 in which the circulation outlet 623 is disposed
0 back wall.

The rear panel 111 has a recess 632 (see FIG. 2) formed on the inner rear wall of the housing 2 so as to form a space between the inner box 2 and the front surface of the recess 632. Attached to cover. In the space formed by the concave portion 632 and the back panel 111, the second cool air passage 607 is disposed, and the circulating fan 608 forming the third cool air passage 609, and the wind direction changing means 700 , A bearing 702 that supports a lower portion of the cylindrical duct 701 and communicates cool air from the circulation fan 608 to the cylindrical duct 701, and supports an upper portion of the cylindrical duct 701. In addition, a driving unit 703 for rotating the cylindrical duct 701 is provided.

The blow-out portion 623 composed of the cylindrical duct 701, the circulation fan 608, and the drive portion 703 is attached to the back panel 111 from the back side via screws or the like. The circulation outlet 6
The assemblability is improved by incorporating the back panel 111 with the attached 23 into the recess 632 formed on the back side of the refrigerator compartment 100. In this embodiment, the rear panel 111 is assembled into the housing 2 and then the front panel 112 is attached.
2, the rear panel 111 may be incorporated into the housing.

Further, as shown in FIG. 2, the cylindrical duct 701 is provided at a position where the upper part is protruded from the lower part thereof, so that the cylindrical duct 701 is arranged to be inclined toward the front side of the refrigerator in the refrigerator compartment 100. Correspondingly, the rear panel 111 and the front panel 112 are also formed to be inclined forward of the refrigerator. Thereby, the rear wall of the refrigerator compartment 100 can be provided to be inclined so as to protrude toward the hard-to-use space at the upper rear and to drive the relatively easy-to-use space at the lower rear to the rear. The cylindrical duct 701 in a rotating vertical position is arranged, and a circuit board 6 is provided at the upper rear of the cylindrical duct 701.
The arrangement of the refrigerator 16 does not impair the usability of the refrigerator.

Returning to FIG. 5, the second flat portion 111b has an opening 113 communicating with the outlet 610 of the third cool air passage 609 at the center thereof, and the lighting device 110 is provided on both sides thereof. Of the second cool air passage 607, on both sides of the concave portion 114,
It is provided in a slit shape.

The air outlet 611 is composed of an upper air outlet 611a arranged at an upper stage and air outlets 611b, 611c, 611d provided therebelow. The upper air outlet 611a has a large opening. In order to obtain the same, a plurality of horizontal slits are provided, and the other outlets except 611c are formed with openings smaller than the slits forming the upper outlet 611a. In this embodiment, the middle outlet 6
11c is provided with the largest opening area, and is formed so as to increase the cooling capacity of the shelf space in the refrigerator compartment 100 corresponding to the outlet. This shelf is provided above the ice greenhouse 150, and is located at a position most convenient for the user to place storage items. By increasing the amount of cold air blown out from the shelf, cooling can be performed in a short time even when cooling a large-sized or large-capacity storage product, thereby improving the usability of the user.

The first flat portion 111a constituting the back wall of the ice temperature chamber 150 has an outlet for supplying cool air to the ice temperature chamber 150, and a cold air return port 1 for the cold room.
16 and the circulation fan 6 on the back side.
08 is provided.

The front panel 112 is attached to the rear panel 111 so as to cover the interior lamp 110 as an illumination device and the opening 113. The front panel 112 is formed of a translucent material, and has a front surface or a back surface that is subjected to a graining process or the like so that the inside of the front panel 112 is hardly visible. Accordingly, the lighting device 110
Can be diffused and illuminated from the rear side of the refrigerator compartment 100.

In the center of the front panel 112, the vertically elongated concave outlet 610 is formed.
The outlet 610 has a slope 63 in which both sides are inclined inward.
6, a cylindrical portion 637 is formed inside the inclined surface 636. The cylindrical portion 637 projects forward in an arc shape. Further, the cylindrical portions 637 have outlets 610a, 610b, 610 provided in accordance with the arrangement of the partition shelves 101.
c, 610d. These air outlets are provided corresponding to air outlets 717 in the duct provided in the cylindrical duct 701 to be described later, and air blown out of these openings is supplied to the refrigerator compartment through air outlets 610a, b, c, and d. It is arranged to blow out to 100. In addition, the cylindrical portion 637 is formed in a concentric shape about the rotation axis of the cylindrical duct 701 disposed close to the rear thereof, and the inclined surface 636 is formed around the rotation axis. It has a fan-shaped open slope.

Next, the structure of the circulation fan 608, the cylindrical duct 701, and the drive section 703 constituting the third cool air passage 609 will be described with reference to FIGS. 6A and 6B are diagrams illustrating a configuration of a circulation duct portion of the refrigerator in the refrigerator illustrated in FIG. 1, wherein FIG. 6A is a diagram viewed from the front side, and FIG. 6B is a diagram viewed from the left side. 7A and 7B are diagrams showing the structure of components constituting the refrigeration room circulation duct shown in FIG. 6, wherein FIG. 7A is a plan view and FIG. 7B is a left side view. FIG. 8 is a diagram showing a structure of components constituting the refrigeration room circulation duct shown in FIG. 6. FIG. 9 is a diagram showing the structure of components constituting the refrigeration room circulation duct shown in FIG.
FIG. 10 is a cross-sectional view schematically showing the structure of the rear part of the refrigerator compartment of the refrigerator shown in FIG.

6 and 8, the circulation fan 608
And the cylindrical duct 701 are connected with the bearing 702 therebetween.

A motor 704 constituting a driving unit 703 for rotating the cylindrical duct 701 is connected via a link unit 705 above the cylindrical duct 701.

In this embodiment, the circulating fan 608 is sucked from a central portion 608a (front front portion) of the fan rotating shaft, blows out the sucked cool air to the surroundings, and collects the cool air with a fan cover 608b. Adopts a centrifugal fan structure that blows out from the peripheral side surface part 608c (above). By employing this centrifugal fan structure, the depth of the circulation fan 608 in the rotation axis direction (front-back direction) 608d can be reduced. In addition, the circulation outlet passage and the circulation fan 608 can be arranged in front and rear.

The motor 704 includes a cylindrical duct 701
, And is provided along the axis of rotation of the duct along the axis of rotation. The motor 704 is provided so that the rotational position of the duct 701 can be freely adjusted so that the direction of the cool air blown out of the duct 701 into the refrigerator compartment 100 can be set in a desired direction. A stepping motor is used. The bearing part 7
Numeral 02 is a member that supports and supports the lower portion of the cylindrical duct 701 and communicates cool air blown from the circulation fan 608 to the cylindrical duct 701. The circulation fan 608 is formed of another member or another material.

As shown in FIG. 6, the bearing 702
Is a circulating fan 6 arranged in a posture in which the rotation axis is horizontal.
08 and the cylindrical duct 701 arranged with the rotation axis inclined forward. Thus, the rotation of the circulation fan 608 can be stabilized, and the cylindrical duct 701 can be supported in an inclined posture. In addition, the circulation fan 608 is arranged rearward of the cylindrical duct 701 (left side in the drawing). Further, as described above, the cylindrical duct 701 is instructed in a forwardly inclined posture in which the upper side is inclined toward the front side of the refrigerator 1. Accordingly, the thickness (diameter) of the cylindrical duct 701 can be increased to secure the size of the cool air passage, the amount of cool air can be increased and the sound can be reduced, and the lower part of the cylindrical duct 701 can be reduced. A space can be secured in the front part, and the circulation suction part 623 communicating with the circulation fan 608 that takes in air from the front can be arranged.

In this embodiment, the circulation fan 60
8 is attached to the back panel 111 by an attachment rib, and the motor 704 is attached to the bearing 702 by an attachment rib. The bearing 702
May be attached to the back panel 111. Further, the cylindrical duct 701 has a lower part supported by the duct fitting part 708 of the bearing part 702, and an upper part supported by the motor 704 via the link part 705. That is, in the present embodiment, the cylindrical duct 70
1, the circulation fan 608 is provided at one end in the longitudinal direction,
By providing the drive section 703 at the other end, the drive section 703 can be arranged without obstructing the cool air passage, and the whole can be compactly assembled.
In addition, in this embodiment, the load applied to the motor 704 is reduced by suspending the cylindrical duct 701 with respect to the drive unit 703, and the swing operation of the cylindrical duct 701 is performed satisfactorily. be able to.

Next, referring to FIG.
Will be described in more detail. In FIG. 7, first, the bearing portion 702 has the cylindrical duct 701 on its upper side.
A duct fitting portion 708 is formed so as to fit into the cylindrical shape of the cylindrical duct 701 so that a lower end of the duct fitting portion is fitted inside. The duct fitting part 70
8, a bearing recess 710 supported by a cross-shaped beam member 709 is formed. On the other hand, the lower end of the cylindrical duct 701 is open, and a bearing projection 712a supported by a cross-shaped beam member 711 is formed substantially at the center of the opening. When the cylindrical duct 701 is fitted into the duct fitting portion 708, the bearing recess 710 and the bearing projection 712a are fitted, and the bearing projection 712a is rotated by the bearing recess 710. When the cylindrical duct 701 is rotatably supported, shaft deflection during rotation of the cylindrical duct 701 is suppressed. Further, the rotation of the cylindrical duct 701 becomes smoother. And, these beam members 70
The cool air blown from the circulation fan 608 passes through the space between 9 and 711 and flows into the inside of the cylindrical duct 701.

The cylindrical duct 701 has a plurality of projections 713 formed at substantially equal intervals along the outer periphery on the outer peripheral portion of the cylinder at a portion fitted into the duct fitting portion 708. The portion of the outer diameter of the projection 713 is
The duct fitting portion 708 is formed in such a size that a gap is obtained so as to fit inside the inner circumference. With this structure, the cylindrical duct 701 is attached to the duct fitting portion 708.
When inserted into the cylindrical duct 701, even if the rotating shaft is shaken due to, for example, an impact during use of the cylindrical duct 701, the rotating shaft is formed so that the rotating shaft does not shake more than a certain amount.
When the outer periphery of the cylindrical duct 701 and the inner periphery of the duct fitting portion 708 are in contact with each other and slide, the contact area is provided to reduce the contact area between them and reduce the resistance during rotation. is there.

The bearing 702 is connected to the circulating fan 608 while being connected to the circulating fan 608.
8, the concave portion 70 projecting downward on the side where the cylindrical duct 701 is inclined, that is, the front side of the refrigerator.
6 are formed. The recess 706 corresponds to the lower end of the cylindrical duct 701 below the front end of the refrigerator. A hole 70 is provided below the recess 706.
7 are formed. The recess 706 serves as a water reservoir for storing water droplets that have entered the inside of the cylindrical duct 701 from the inside of the refrigerator compartment 100 and water droplets formed by condensation of water contained in the cool air circulated through the circulation fan 608. The hole 707 is formed to drain the water accumulated in the recess 706 downward. In the present embodiment, since the cylindrical duct 701 is inclined toward the front side of the refrigerator, water droplets adhering to or entering the inside of the cylindrical duct 701 fall downward along the inner surface of the cylindrical duct 701. And easily accumulate on the front side of the refrigerator. The recess 706 and the hole 707 are for draining the water droplets efficiently.

As described above, in the present embodiment, the circulating blow-out portion 623 includes the rotating cylindrical duct 701, the circulating fan 608 as a rotating member, the cylindrical duct 701 and the circulating fan 608. And the bearing portion 702, which is a separate member disposed therebetween. The bearing 702 is formed with a recess 706 that functions as a water reservoir having a drain hole on the front side of the refrigerator, and is located above the recess 706 and tilted forward. Moisture dripping from the front lower end of the cylindrical duct 701 is accumulated, and moisture is drained from the water draining hole 707, and the moisture in the cylindrical duct 701 may enter the circulation fan 608. Is suppressed. In particular,
Since the cylindrical duct 701 is inclined forward to the front of the refrigerator, moisture easily collects at the front lower end of the cylindrical duct 701. With the above-described configuration, moisture is efficiently collected and drained. Is done. As a result, it is possible to prevent occurrence of an accident such as a failure due to intrusion of moisture into the circulation fan 608.

Next, the cylindrical duct 701 will be described with reference to FIGS. In this embodiment, the cylindrical duct 701 is divided into two parts 701 in the vertical direction.
a, 701b and a lower duct member 715 constituting a lower portion of the cylindrical duct 701. An upper end of one of the components 701a and 701b is formed to have a bearing projection 712b on an upper portion thereof, and a coupling portion having a smaller diameter than the upper end is formed on the other end. Further, a vertically long cool air outlet 717 for supplying cool air to the air outlet 610 is formed on the outer periphery of one of the components 701a and 701b. This cold air outlet 7
17, an upper cold air outlet 717a disposed above,
A first middle-stage cool air outlet 717b disposed below the upper-stage cool air outlet 717a, and a first middle-stage cool air outlet 717;
A second middle-stage cold air outlet 717c disposed below b and a lower-stage cold air outlet 717d disposed below the second middle-stage cold air outlet 717c are formed.

The cool air flowing inside the cylindrical duct 701 easily accumulates on the upper side of the cylindrical duct 701. For this reason, if the opening area of the cool air outlet 717 is the same, more cool air will flow out toward the upper opening, and the lower part of the partition 101 below the amount of cool air flowing out between the upper partition 101 will be described. (Including the variable shelf 104 and the fixed shelf 105)
The amount of cool air flowing out during the period decreases. on the other hand,
Usually, the height of the upper partition shelf 101 may be high, and the stored items are stored in the lower partition shelf 101.
(Including the variable shelf 104 and the fixed shelf 105). For this reason, when the opening area of the cool air outlet 717 of the cylindrical duct 701 is the same, more cool air is supplied to the upper partition shelf 101 with less storage, and the lower side with more storage is provided. Partition shelf 101 (variable shelf 1
04, including the fixed shelf 105) will tend to be supplied with less cool air, which will reduce the overall efficiency of storage cooling.

In order to solve such a problem, in the present embodiment, the opening area of the cold air outlet 717 is set so that the second middle cold air outlet 717c has the largest opening area and the upper cold air outlet 717a has the largest opening area. The first middle-stage cool air outlet 717b and the lower middle-stage cool air outlet 717d have substantially the same size and an opening area smaller than that of the second middle-stage cool air outlet 717c. Thereby, the partition shelf 101 (variable shelf 104, fixed shelf 10
5) of each partition 101
Cool air is supplied as uniformly as possible between the variable shelves 104 (including the fixed shelves 105) and between the partition shelves 101 (including the variable shelves 104 and the fixed shelves 105) from which the cool air is blown out from the outlet 717c. It is adjusted as follows.

As described above, a wind direction plate 718 is formed inside the cylindrical duct 701 so as to direct the direction of the cool air flowing through the inside of the cylindrical duct 701 from upward to the refrigerator compartment 100 side. Have been. The wind direction plate 718 traverses the cylindrical duct 701 at a position above the first middle-stage cold air outlet 717b and below the second middle-stage cold air outlet 717c. Lower stage cold air outlet 717c
It is provided with a strip-like shape provided so as to guide cold air to the air. By providing this wind direction plate 718,
The refrigerating chamber 1 blown upward from the circulating fan 608 and flowing through the inside of the cylindrical duct 701.
Since the cool air in the air flows into the air direction plate 718, the cool air can be easily changed in the direction of the refrigerating room 100 and easily flows out from the cool air outlet 717 of the cylindrical duct 701.

The lower duct member 715 has a bearing projection 712a supported by the beam member 711, and has a ring-shaped structure having the projection 713 on the outer periphery thereof.

The parts 701a and 701b are
The cylindrical duct 701 is formed by being bonded via an adhesive or a screw, and further, by fitting the lower duct member 715 into the connecting portion 716.

As described above, in this embodiment, since the cylindrical duct 701 has a divided structure, the mold structure at the time of resin molding can be simplified, and the ease of assembly and the reduction in manufacturing cost can be reduced. Can be planned. Further, since the lower duct member 715 has a structure separated from other members, the lower duct member 715 can be formed of a material having higher abrasion resistance and impact resistance, so that the weight can be reduced and the cost can be reduced.

The bearing portion 702 is formed of a material different from the cylindrical duct 701 and more excellent in abrasion resistance and impact resistance, so that the cylindrical portion 702 is formed of a lightweight and low-cost material. It can be combined with the duct 701.

Further, the motor 704 for rotating the cylindrical duct 701 includes:
, Water droplets inside the cylindrical duct 701 are prevented from entering the motor 704, and the occurrence of failure can be suppressed.

Next, with reference to FIGS. 10, 11, 12, and 13, the third cool air passage will be described in more detail. FIG.
FIG. 2 is a cross-sectional view schematically illustrating a structure of a rear part of the refrigerator compartment of the refrigerator illustrated in FIG. 1. FIG. 11 is a cross-sectional view schematically showing the structure of the rear part of the refrigerator compartment of the refrigerator shown in FIG. 1 or a cross-sectional view of the circulation suction part 622. FIG. 12 is a vertical cross-sectional view schematically showing the structure of the refrigerator compartment of the refrigerator shown in FIG. FIG.
It is a front view which shows the structure of the lower part of the refrigerator compartment of the refrigerator shown in FIG.

In FIGS. 10 and 11, as described above,
In this embodiment, the recess 63 is formed in the rear wall of the refrigerator compartment 100.
2, the circulation fan 608 and the cylindrical duct 7
The rear panel 111 to which the front panel 01 and the like are attached is assembled so that the front surface thereof substantially coincides with the rear wall of the refrigerator compartment 100.

At this time, the cylindrical duct 701 enters at a position corresponding to the position of the concave portion 632, and the third cold air passage 609 protrudes more than necessary inside the refrigerating room 100 to reduce the storage volume in the refrigerator. Has been suppressed. The third cool air passage 609 is a flat circulation suction passage 622 a formed behind the ice temperature chamber 150 provided below the refrigerator compartment 100 and formed to be long in the left-right direction of the ice temperature chamber 150, and this circulation suction passage. And a circulation outlet passage 622b extending substantially upward of the center of the 622a.

As shown in FIG. 13, the circulation fan 6
Reference numeral 08 is provided behind the center of the circulation suction passage 623a and is juxtaposed with the branch passages 607a and 607b in the left-right direction. That is, in this embodiment, a passage 622b is formed which is divided into front and rear parts with the rotation axis of the cylindrical duct 701 substantially at the center, and is connected to the front of the horizontally long circulation suction passage 623a to the inlet of the fan 608. ,
At the rear of the circulation suction passage 622a, the circulation fan 608 is provided at the center thereof, and on both sides of the circulation fan 608, the circulation fan 608 is provided from a lower portion of the circulation fan 608.
The branch passage 607 disposed so as to sandwich the
a, 607b.

According to this structure, the cold air at the bottom of the refrigerator compartment 100 (the space between the bottom of the ice warming compartment 150 and the partition 170) is sucked through the circulation suction passage 622a formed in the horizontal direction, and the central air is sucked. This cool air can be supplied to the circulation fan 608 that draws in from the portion, and the branch passages 607a and 607b that are going to spread in a Y-shape can be efficiently arranged on both sides of the circulation fan 608. Further, a cool air outlet 616 to the ice greenhouse 150 can be disposed in the passages 607a and 607b.
With 0, cool air can be supplied evenly, and the cooling performance of the ice greenhouse improves.

Further, since the lower portion of the circulation fan 608 has an arc shape when viewed from the front, the circulation fan 608 can be housed in the branch portion of the Y-shaped branch passages 607a and 607b. The mounting efficiency at the time can be improved.

Then, as shown in FIG. 11, the branch passages 607a and 607a are located at positions above the circulation fan 608.
07b so as to be juxtaposed in the left-right direction.
22b can be arranged to extend upward. Above the circulation suction passage 622b, the cylindrical duct 701 having a substantially cylindrical shape is provided so as to be rotatable about the central axis of the cylinder with the longitudinal direction (the central axis direction of the cylinder) as the vertical direction. I have. Here, a central portion of the concave portion 632 in which the cylindrical duct 701 is disposed is provided with a duct concave portion 632a that is further formed in a concave shape in accordance with the cylindrical duct 701.

That is, when the rear panel 111 is assembled inside the refrigerator, a duct recess 632a is formed on the inner wall on the rear side of the refrigerator compartment 100 at a position facing the cylindrical duct 701. I have. In a state where the back panel 111 is assembled inside the refrigerator 1,
The cylindrical duct 7 is provided inside the duct recess 632a.
01 is accommodated, and the cylindrical duct 701 is located on the refrigerator room 100 side, in this embodiment, on the front side of the refrigerator 1, and the cylindrical duct 701 is moved to the rear side of the refrigerator room 100 without excessive travel. Since it can be arranged on the side, a decrease in the storage volume of the refrigerator compartment 100 is reduced or prevented.

The concave portion 632a for the duct is set to have such a size that a gap can be obtained between the concave portion 632a and the cylindrical duct 701. This is to prevent the cylindrical duct 701 from coming into contact with the back wall even when the cylindrical duct 701 is shaken when rotated. Further, in the cylindrical duct 701, the circuit board 616 is disposed above the refrigerator 1 with a heat insulating material interposed therebetween. Therefore, the thermal influence from the circuit board 616 is reduced by providing the gap. In addition, cold air is blown out from the cylindrical duct 701 to the refrigerator compartment 100, and this refrigerator compartment 1
00, the movement of the cool air in the branch passage 6 is promoted.
The influence of heat on the refrigerator compartment 100 from the circuit board 616 behind the components 07a and 607b is also reduced.

For this reason, as in the prior art, the refrigerator compartment 100
It is not necessary to provide a bulging portion inside the inside, so that the storage capacity in the room is reduced and the usability is suppressed from being deteriorated.

Further, since the cylindrical duct 701 has a small width on the left and right, a sufficient space for disposing the lighting device 110 between the branch ducts 607a and 607b can be ensured. Furthermore, the branch passages 607a, 60
Since there is no circulation suction passage 623a at the front of 7b, the size of the passage can be secured, and at the front thereof, an outlet 611 having a slit-shaped depth can be provided.

As described above, in this embodiment, the cylindrical duct 701 is disposed so as to face the recess 632a formed on the rear wall of the refrigerator compartment 100. With this configuration, the cylindrical duct 701 is provided in the refrigerator compartment 100.
As a result, the projecting portion toward the inside of the refrigerator becomes smaller, and the decrease in the storage volume in the refrigerator compartment 100 is reduced. Alternatively, the front panel 112 can be constituted by a planar member, and the design in the refrigerator is improved. Conversely,
Since the size of the cylindrical duct 701 can be increased, the amount of air circulating into the refrigerator compartment 100 can be increased, and the uniformity of the temperature inside the refrigerator compartment 1 and the efficiency of cooling can be increased.

Further, the circulating fan 608 is a centrifugal fan that draws air from the front surface and blows the air upward.
Unlike the axial fan, the axial flow path of the fan rotation shaft is not required before or after the fan, so that the space of the air flow path flowing to the circulation fan 608 can be reduced, and the space in the refrigerator compartment 100 can be reduced. Reduction in reduction can be suppressed, and reduction in usability can be suppressed.

Referring to FIG. 14, two shelves were set on the shelf above the ice greenhouse.
The structure of the rear part of the divided shelf will be described. FIG.
FIG. 12 is an enlarged cross-sectional view showing the structure of the lower rear portion of the refrigerator compartment of the refrigerator shown in FIG. 11. In this embodiment, the ice greenhouse 150
Is provided with two shelf members 104 and 105 divided in the left-right direction of the refrigerator. A support leg for vertically supporting these partition plates is provided at a boundary between the two shelf partition plates. This support leg is located just in front of the cylindrical duct 701. Therefore, the outlet 610d provided in the front panel 112 is provided at a position on the right or left side of the support leg, avoiding the support leg.

The outlet 610d has outlets 610d 'and 610d''on the left and right sides of the support leg. FIG. 14 (a)
Is a diagram showing a state in which the duct 701 faces the left direction. In this case, the air flowing out of the outlet 717d is
It flows into the refrigerator compartment 100 through 610d '. Then, the liquid is discharged into a space between shelves separated by the partition plate 104 through an opening 104a formed on the back surface of the partition plate 104. Here, the opening 104a has the outlet 61 at the left end.
0d 'is formed on the left side of the left end. Further, the left end of the outlet 610d 'is located on the left side of the left end of the outlet 717d when the duct 701 is rotated to the left most.

When the duct 701 is directed rightward, air from 701d flows into the refrigerator through the outlet 610d '' as in FIG.
5 through the opening 105a formed in the back surface of the partition plate 1.
The liquid is discharged into the space between shelves separated by the line 05.

Similarly to the relationship shown in FIG. 14A, the relationship between the outlets 717d, 610d '', and 105a is such that the outlets are arranged from the right side in this order.

FIG. 14B is a diagram showing a state in which the duct 701 faces the front of the refrigerator.

In this state, the air blown out of the outlet 717d collides with the front panel 112 and collides with the outlet 61.
0d ', 610d''and 104a, 105
a to the space between the shelves.

Next, the configuration of the refrigeration cycle and this drive in this embodiment will be described with reference to FIGS. FIG. 15 is a schematic diagram showing a configuration of a refrigeration cycle of the refrigerator shown in FIG. FIG. 16 is a schematic diagram showing a relationship between a control circuit and a refrigeration cycle in the refrigerator shown in FIG.

FIG. 15 is a schematic diagram showing an example of a refrigeration cycle mounted in this embodiment. In this embodiment,
Cooler 6 for cooling the refrigerator compartment 100 and the vegetable compartment 200
71 and the fan 672 for the cooler,
Cooler 6 for cooling switching room 300 and ice making room 400
A refrigeration cycle equipped with a cooling fan 61 and a fan 662 for the cooler is mounted. This cycle is performed in the machine room 60
The refrigerant sent from the compressor 801 arranged in the
After being cooled and condensed by a condenser 802 (not shown), which is also arranged in the machine room, it is depressurized through decompression means (capillary tubes) 804 and 805 and then flows into the coolers 661 and 671.

Further, in this embodiment, the refrigerant from the condenser flows in two branches, one flows through the decompression means 804 and the refrigerator cooler 671, and the other flows into the decompression means 805 and the refrigerator cooler. 661. This branch is provided with a valve 803 for switching the refrigerant flow, and by switching this valve, it is possible to adjust to which cooler the refrigerant flows.

As shown in FIG. 16, this adjustment is performed based on a command from a control device provided on the circuit board 616. This control device includes a refrigerator compartment 100, a freezer compartment 500
The compressor 801 and the valve 803 and the cooler fans 662 and 67 receive the output from the temperature detection sensor provided therein.
2. A command is given to the third cool air passage fan 608 to adjust the driving of the refrigeration cycle. For example, when the temperature of the freezing room 500 becomes higher than a predetermined temperature and it is determined that cooling is necessary, the compressor 801 is driven or its rotation speed is increased so that the refrigerant flows to the freezing room cooler 661. Activate the valve. Further, the fan 662 for the freezer is driven,
Increase the number of revolutions. Further, the rotation speed of the third cool air passage fan 608 is variably adjusted.

When the temperature of the refrigerator compartment 100 becomes higher than the predetermined temperature and it is determined that cooling is necessary, the valve is operated so that the refrigerant flows to the cooler 671. further,
The refrigerating compartment is cooled by driving the fan 672 or increasing the rotation speed. If the cooling in these storage chambers advances and becomes lower than a predetermined temperature, the valve is switched to cool only another storage chamber, or the rotational speed of the compressor is reduced,
Command to stop.

[0129] The refrigerator of the present embodiment has coolers 661 and 67.
The storage room cooled by the cooling unit 1 is independent, and the circulation path through which the air to be cooled by the cooler flows is also independent. That is,
The storage room, the refrigerator room and the vegetable room, and the freezing room, the ice making room and the switching room are cooled independently. In this configuration, by adjusting the number of revolutions of the cooler fans 662 and 672 variably, the amount of air supplied to the storage room and circulated can be changed, and the temperature of the air cooled by the coolers 661 and 671 can be independently controlled. It can be changed.
Further, if an inverter for variably adjusting the rotation speed of the compressor is provided to change the supply amount of the refrigerant and increase the cooling capacity of the cooler, the temperature of the air can be lowered.

As described above, the size of the space cooled by the refrigerator cooler 671 is larger than the size of the space cooled by the freezer cooler 661, and is cooled by the refrigerator cooler 671. The temperature of the air supplied to the refrigerator compartment 100 can be higher than the temperature of the air supplied to the freezer compartment. In a conventional refrigerator having a single cooler, the temperature of the air from the cooler is about −18 to −25 ° C., but the cooler 67 for the refrigerator compartment by the refrigerating cycle of the present embodiment.
The temperature of the air cooled by 1 is 0-10 ° C,
The temperature of this cooler surface is also about -10 to -15 ° C,
It can be higher than before.

In a conventional refrigerator in which only one cooler is used and air cooled by the cooler is also supplied to the refrigerator compartment, the air supplied to the refrigerator compartment and the freezer compartment has a similar temperature. For this reason, in the conventional refrigerator, since the temperature difference between the set temperature of the refrigerator compartment and the temperature of the supplied air is large, there has been a problem that if a large amount is supplied into the refrigerator compartment or the vegetable compartment, the refrigerator may be too cold or freeze. Furthermore, if the temperature difference is large, and if it is supplied at a small flow rate in order to prevent overcooling, the temperature unevenness in the refrigerator compartment will increase.

In the present embodiment, the difference between the temperature of the air supplied to the refrigerator and the set temperature can be reduced by adjusting the amount of the air supplied to the refrigerator 100 to be large. For this reason, the speed of the air blown out to the refrigerating room is increased, and the air reaches far into the room, thereby reducing the temperature unevenness. Also, excessive cooling is reduced.

Further, since the direction of the air blown out from the third cool air passage and circulating in the room can be changed, even if the speed of the cool air from the cool air outlet 610 is low, the circulating air from the blow outlet 611 can be changed. The low temperature air is carried to the front of the refrigerator compartment. Therefore, the fan 672
Even if the number of rotations is low, the temperature unevenness in the chamber becomes small,
The inside of the refrigerator is cooled more uniformly in a shorter time. In addition, although the air from the refrigerator cooler 671 is at 0 ° C. or less, it is possible to reduce the possibility that the stored product is exposed to the low-temperature air blown out and becomes too cold. In particular, even if the temperature of the refrigerator compartment is set to around 0 ° C., the temperature of the most frequently used area near the central portion in the left-right direction of the refrigerator compartment becomes excessively low, and the adverse effect on the stored items is reduced. You.

Further, a means for variably adjusting the number of revolutions of the fan 608 for supplying air to the third cool air passage is provided, and the number of revolutions of the compressor 801 and the fan 662 for the cooler are provided.
Together with the provision of the means for variably adjusting the rotation speed of the 672, it becomes possible to adjust the temperature in the refrigerator more precisely and in a shorter time. Thereby, the power consumption of the refrigerator can be kept low.

As described above, the refrigerator according to this embodiment includes the freezing room 500, the switching room 300, and the ice making room 4
The first cooling chamber 660 for generating cool air to be supplied to the first cooling chamber
And the second cooling chamber 670 that generates cool air to be supplied to the refrigerator compartment 100. This allows, for example,
Cold air is supplied from the first cooling chamber 660 only to the freezing chamber 500, the switching chamber 300, and the lower freezing chamber of the ice making chamber 400, so that the food can be quickly frozen and the like can be efficiently performed. Also, from the second cooling chamber 670,
Since the cool air is supplied only to the refrigerator compartment 100 and the vegetable compartment 200, it is not affected by the cool air that cools the freezing compartment 500, so that the overcooling of each storage compartment can be reduced.

In the refrigerator according to the present embodiment, a third cool air passage 609 provided with the circulation fan 608 and the cool air direction changing means 700 is provided at the center of the refrigerator compartment 100. The lighting device 110 is provided on both sides of the passage 609, and the outlets 61 are provided on both sides of the lighting device 110.
By providing the branch passages 607a and 607b provided with 1, the respective devices are arranged side by side in the depth direction of the refrigerator compartment 100, and each device does not protrude in the depth direction of the refrigerator compartment 100 and The refrigerator compartment 100, which is difficult to remove
Since the inner rear wall can be used efficiently, the mounting efficiency of each device can be improved and the whole can be made compact.

The refrigerator compartment 100, which is used most frequently, is arranged at the uppermost portion. The vegetable compartment 200 is arranged below the refrigerator compartment 100, and the switching compartments arranged side by side are arranged below the vegetable compartment 200. A freezing room 500 is arranged at the lower part of the refrigerator 300 and the ice making room 400, the switching room 300 and the ice making room 400, that is, the lowermost part of the refrigerator. With such an arrangement, the storage room is arranged in accordance with the actual use of the refrigerator, so that food can be taken in and out without significantly changing the posture.

The refrigerator 1 according to the present embodiment extends in the vertical direction of the refrigerator between a plurality of branch passages 607 provided in the vertical direction of the refrigerator on the rear wall surface of the refrigerator 100 and through which cool air flows. A third cool air passage 609 is provided. The cool air passage 609 is connected to the circulation fan 608 and an outlet 610 through which air from the fan is blown out to the refrigerator compartment 100.
And this cold air direction changing means 700. The air blown from the outlet 610 of the wind direction changing means 700 communicates with the branch passage 607 of the refrigerator compartment 100 and is mixed with the cool air from the outlet 611 through which the cool air flows out from the cooler into the space between the shelves. Circulates inside. Thereby, supercooling due to low-temperature cold air from the outlet 611 is reduced,
Mixing of the air in the refrigerator is promoted, so that the temperature unevenness in the horizontal direction or the vertical direction in the refrigerator can be reduced, and the cooling performance can be improved.

Further, the cold air direction changing means 700 forms the air outlet 610 in a vertically long shape so that the cold room 1 can be cooled.
Cold air can be supplied to the storage space partitioned by each of the partitioning shelves 101 without being affected by the plurality of partitioning shelves 101 that vertically divide 00.

Further, the cool air direction changing means 700 is configured to change its direction by operating the operation section 121. For example, when food to be rapidly cooled is stored in the refrigerator compartment 100, the operation unit 12
1 by operating the cold air direction changing means 700
Can be operated to intensively apply cold air to the place where the food is stored, so that the food can be cooled efficiently.

In the prior art, the arrangement of the outlet of the cooled cool air flowing out of the cooler into the storage chamber and the outlet of the air circulating in the storage chamber were not sufficiently considered. That is, the outlet of the cool air flowing into the storage chamber from the cooler into the space between the shelves partitioned by a plurality of partitioning shelves arranged vertically in the storage room, and the suction port of the air passage circulating in the room are the same shelf. It cannot be provided to correspond to the interspace. This is because if these are provided in correspondence with the space between the same shelves, the low-temperature cold air flowing in from the cooler flows in the direction of the suction port before sufficiently reaching the storage arranged in the space between the shelves. You will be sucked. Then, the cool air having a low temperature flows into the passage of the circulating air and flows out into the space between the other shelves. Since the circulating air has a large flow rate, there is a possibility that the stored material may be supercooled. In addition, a steady low-temperature air flow from the outlet of the cool air to the inlet of the circulating air is generated, and the stored matter placed on the flow path is constantly exposed to the low-temperature air from the cooler.

For this reason, the outlet for the cool air from the cooler is not provided between the same shelf as the suction port for the circulating air, and there is a possibility that the cooling at the stage with the suction port is insufficient because the low-temperature air is not supplied. there were. In addition, there is a limit to the position and size of the circulating air suction port, and the air between the shelves provided with the suction port tends to concentrate on the suction port and flow easily. For this reason, the cooling efficiency of the storage material placed at a position deviated from the flow of the circulating air is lower than that of the storage material placed at the concentrated portion of the flow, resulting in uneven cooling.

When the suction port is provided so as to correspond to a space between one of the spaces partitioned by a plurality of shelves,
It is difficult for the circulating cold air to reach the storage space below the space between the shelves. For example, an ice greenhouse is provided below the refrigerator compartment,
If a circulating air inlet is provided between the shelves immediately above the ice greenhouse, the air will not easily reach the front of the ice greenhouse, so the cooling performance, especially in the storage pocket inside the door, will reduce the space in other storage rooms. Was lower than that.

In this embodiment, the circulation fan 608 or the suction port 6 for the internal air flowing into the circulation fan 608 is used.
22a is connected to an ice greenhouse 15 provided below the refrigerator compartment 100.
0. Further, a configuration is provided in which a space between a partition plate 170 for partitioning the refrigerator compartment and the vegetable compartment and the tray 152 of the ice temperature compartment 150 communicates with the suction port of the circulating air to be a passage through which air flows. In this configuration, the refrigerator compartment 1
The cold air from the cooler that has flowed into the space between the shelves in the room 00 and the air circulating in the cold room descends through the gap between the door pocket 103 in front of the ice room 150 and the case of the ice room 150, and It flows into the suction port 622 through the space between the tray 152 and the partition plate 170.

For this reason, since the circulating air inlet and the cool air outlet from the cooler could not be arranged in the same inter-shelf space in the past, the air flow was also supplied to the door pocket portion where the cooling performance was reduced. As a result, the cooling performance can be improved. Also, an outlet for circulating air or cool air from a cooler can be provided in the space between the shelves where the suction port has been provided, and the cooling performance in the space between the shelves can be improved.

In particular, in the refrigerating room 100, in addition to the above, the inside of the refrigerating room 100 can be cooled evenly by the circulating cool air supplied from the third cool air passage 609, and a lot of space can be stored in the storage space. Even when food is stored, shortage of cold air supply to the storage pocket 103 can be reduced.

When the suction port 622 is provided so as to face the space between the shelves of the refrigerator compartment, there is a possibility that foreign matter such as water droplets and debris of stored matter may enter the fan 608 from the suction port.

Therefore, in order to suppress the entry of this foreign matter,
When the suction port 622 is provided at a position distant from the area immediately before the fan entrance 608a, for example, at the side of the fan 608,
The air in the refrigerator had to change its flow direction many times after flowing into the suction port, so that the ventilation resistance increased and the cooling efficiency of the fan 608 decreased.

Since the circulation fan of this embodiment is disposed behind the ice greenhouse 150, the front of the fan air inlet 608a is covered with the ice greenhouse tray 152. The tray 152 prevents foreign matter such as water droplets and debris of stored matter from flowing into the fan from the front. Therefore, it is possible to provide the suction port 622 on the front side of the fan 608. In this case, the air from the suction port 622 can directly flow into the fan 608 from the front, the ventilation resistance is reduced, the circulation efficiency of the inside air is improved, and the cooling performance is improved. In addition, the size and number of rotations of the fan required to secure the same air volume of the fan 608 can be reduced, the storage volume in the refrigerator can be increased, and the manufacturing cost and noise can be reduced.

In this embodiment, the air inlet 608a of the circulation fan 608 is provided above the suction port 622. In this case, the air in the refrigerator below the ice greenhouse 150 sucked from the suction port 622 becomes the fan air inlet 608.
a, flows in the axial direction of the fan from the front of the fan 608, and is discharged upward again. Even in this case, the bending of the air flowing into the fan 608 is suppressed, the ventilation resistance is reduced, and the efficiency of the air blowing and circulation by the fan 608 is improved.

As a result, the cooling efficiency in the refrigerator is improved, and the production cost and noise can be reduced.

Further, since the noise from the inlet of the fan 608 is not directly transmitted to the refrigerator compartment, the noise of the refrigerator is reduced.

The circulating air suction port 622 of this embodiment is
The length of the opening of the refrigerator compartment in the left-right direction is
8 is formed larger than the diameter. This suction port 622
By forming the opening large, the resistance when air flows into the suction port is reduced. In addition, by increasing the substantial width of the space between the ice greenhouse tray 152 used as the air passage and the partition plate 170, the resistance of the air flowing through this passage can be reduced.

Further, in this embodiment, the flow direction of the circulating air can be variably adjusted, and the air flow below the ice greenhouse tray 152 as viewed from the circulating fan 608 concentrates, so that the direction of the portion where the flow rate is large also changes. . By increasing the size of the opening, even if the direction of the portion where the flow of air is concentrated (the flow rate is large) changes, the internal air flows smoothly from below the tray 152 to the opening, and the ventilation resistance is reduced.

As described above, when the circulation fan 608 operates, the low-temperature air in the ice temperature chamber 150 or the ice temperature
The cool air from the cooler 671 flowing into the ice warm room does not spread to the ice warm room, and the cool air outlet of the ice warm room passes through the inlet 62 below the cool air outlet.
There is a possibility that it will flow into 2. In this case, the low-temperature air in the ice hot room 150 and the low-temperature air from the cooler 671 flow into the third cool air passage 609 and are blown out between the shelves of the refrigerating room 100. There is a risk that the stored material will be overcooled. Further, in the configuration in which at least a part of the cold air in the refrigerator compartment 100 flows into the vegetable compartment 200 as in the present embodiment, it is difficult to adjust the temperature inside the vegetable compartment 200 to a desired temperature, and the stored vegetables may not be cooled. Will also have an adverse effect.

In this embodiment, as described above, the ice greenhouse 150
A rib portion is provided between the suction port 622 and the cold air inlet in the ice temperature chamber 150 on the rear wall of the air conditioner. In a state where the ice greenhouse tray 152 is housed in the ice greenhouse 150, the rib portion and the rear end of the ice greenhouse tray 152 are engaged with each other, so that the flow of cold air from the outlet to the inlet 622 is prevented. It is possible to reduce the adverse effect on the stored product due to the supercooling in the refrigerator or the inability to perform appropriate temperature control, and the temperature in the refrigerator can be kept more uniform.

[0157] The structure that achieves such an effect is not limited to the structure of the present embodiment. A concave portion is provided in the back wall of the ice greenhouse 150, and the concave portion and the ice green room tray 152 are provided.
A configuration bet in which the rear end portion is fitted. Conversely, a convex portion extending in the left and right direction of the ice greenhouse is provided on the back wall of the ice greenhouse 150,
The convex portion may be located above or below the rear end of the tray 152 when the ice greenhouse tray 152 is stored in the ice greenhouse, and may be configured to come into contact with the convex portion or overlap through a slight gap. Of course, a seal member for sealing between the tray 152 and the back wall of the ice temperature chamber 150 may be provided. With such a configuration, the passage distance of the air that is going to flow directly from the outlet of the ice temperature room to the suction port 622 increases, and the flow of this air is hindered.

Further, in this embodiment, the air supplied to the refrigerator compartment 100 is supplied to the vegetable compartment 200. However, a means for circulating indoor air is provided in the refrigerator compartment 100, and when such a means is provided, a configuration for appropriately supplying the air in the refrigerator compartment 100 to the vegetable compartment 200 will be described. The prior art has not been sufficiently studied.

In this embodiment, the refrigerator compartment 100 and the vegetable compartment 20
Connecting passages 625a and 625b passing through the partition plate 170 are provided on the front and rear sides of the partition plate 170 for separating the refrigerator compartment 100 from the refrigerator compartment 100 so as to communicate the refrigerator compartment 100 and the vegetable compartment 200. Connection passage 625
The air flowing into the vegetable compartment 200 via a and b flows through the vegetable compartment container 201 from the upper front surface and the front side to the bottom surface side, and from the upper surface of the vegetable compartment container 201 to the vegetable compartment container 201.
It becomes a flow flowing on the rear side, and flows so as to wrap the whole vegetable compartment 201. As described above, in the present embodiment, the vegetable room container 201 is cooled by the above-mentioned flow before and after. With this configuration, the cooling efficiency in the vegetable compartment is improved.

Further, in this embodiment, a second cooler room 670 is disposed at the rear of the vegetable room 200, and the cool air to the second cooler room 670 is provided on the back wall of the vegetable room 200 on the front side of the refrigerator. Return port 629 is provided. As above,
The flow around the vegetable room container 201 in the vegetable room 200 flowing into the cold air return port is divided into a flow descending behind the container 201 and a flow descending forward, and flows.
The configuration in which these flows flow into the return port 629 of the back wall of the vegetable room 200 reduces the resistance of the air flowing around the vegetable room, and the cooling efficiency inside the vegetable room 200 due to the air flow around the vegetable room container 201 is reduced. improves.

In the structure of this embodiment, the circulation fan 6
When the second cooling fan 08 and the second cooling fan 672 are driven at the same time, the air flowing to the third cool air passage 609 and the vegetable room 200 is both supplied from the air flowing through the bottom surface of the refrigerator room 100. In the above configuration of the present embodiment, since the flow resistance of the flow of the air flowing from the refrigerator compartment to the vegetable compartment through the connection passage is reduced, the air flow returning from the refrigerator compartment to the cooler compartment via the vegetable compartment causes the air to circulate. Cooling performance is improved. Since the flow resistance of the circulating air is reduced, the blowing efficiency of the fan for circulating the air inside the refrigerator, for example, the second cooling fan 672 is improved, so that a large amount of air can be blown at the same rotation speed and the same amount of air is blown. Since the number of rotations of the fan can be reduced, noise can be reduced and power consumption can be reduced. Further, the size of the fan can be reduced.

The flow of air discharged from the third cool air passage into the refrigerator compartment 100 flows upward from the lower circulation fan 608 through the duct 701, so that the air flows from the discharge port 610 to the refrigerator compartment 100. Even after flowing into the refrigerator, it is easy to flow toward the upper part of the refrigerator compartment due to inertia. In the case of circulating air having such an upward flow and flowing into the refrigerator compartment 100,
After flowing into the refrigerating compartment 100, it collides with the partition shelves 101, 104, and 105 arranged vertically and flows along the shelves, and then descends. For this reason, the air from the third cool air passage is unlikely to come into contact with the stored items arranged in the space between the shelves, and the stored items cannot be cooled sufficiently.

In the present embodiment, the outlets 717a, b, c, d provided in the circulation duct 701 or the outlets 610a, b, c, d provided in the front panel 112.
Are provided below the space between the shelves in the height direction. That is, the outlets 717a, b, c, d or 61
0a, b, c, d at least one of the lower ends of the outlets,
The shelf is provided closer to a shelf surface below the upper shelf surface between the shelves provided with the outlets. With such a configuration, the contact between the circulating air and the storage material arranged on the lower shelf surface is increased. The increased contact with air promotes the cooling of the stored items and improves the cooling performance of the refrigerator. In this embodiment, the outlet 71 provided in the circulation duct 701 is provided.
7a, b, c, d, or the outlets 610a, b, c, d provided in the front panel 112 are provided such that the cool air from these outlets is blown out from the second cool air passage.
They are arranged to collide with and mix with cold air from b, c, d. In other words, the lower end of at least one of the outlets 717a, b, c, d or 610a, b, c, d is an outlet from the second cool air passage provided between the shelves provided with the outlets. 611 is provided below the lower end.

The air discharged from the circulation duct 701 is
The flow rate of the cool air supplied from the second cooler chamber 670 through the outlet 611 is higher than the flow rate of the cool air, and is easily blown upward as described above. For this reason, the air from the circulation duct 701 flows with a large flow velocity to a distance farther than the air from the outlet 611. Further, in this embodiment, the circulation duct 701 is configured so that the direction of the outlet 717 can be changed in the left-right direction of the refrigerator. Therefore, in the present embodiment, the air from the circulation duct 701 directed to one of the left and right sides collides against the cool air from the outlet 611, and particularly, the cool air from the outlet 611 that easily flows downward. The circulating air is configured to collide upward from below. With this configuration, the mixing of the high-temperature air circulating in the refrigerator compartment and the low-temperature air from the cooler is promoted, and temperature unevenness in the refrigerator and supercooling due to cool air are reduced,
The cooling performance of the refrigerator is improved.

[0165]

As described above, according to the present invention, it is possible to provide a refrigerator in which the temperature deviation in the refrigerator is reduced and the cooling performance is improved.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating the appearance of a refrigerator according to a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view schematically illustrating the structure of the refrigerator shown in FIG.

FIG. 3 is a vertical cross-sectional view illustrating a schematic structure of the refrigerator shown in FIG. 1 as viewed from the front.

FIG. 4 is a front view of a refrigerator room of the refrigerator shown in FIG.

FIG. 5 is a perspective view illustrating a configuration of a rear part of the refrigerator compartment of the refrigerator illustrated in FIG. 1;

FIG. 6 is a diagram showing a configuration of a circulation duct portion of the refrigerator in the refrigerator shown in FIG.

FIG. 7 is a view showing the structure of components constituting the refrigeration room circulation duct shown in FIG. 6;

FIG. 8 is a diagram showing a structure of components constituting the refrigeration room circulation duct shown in FIG. 6;

FIG. 9 is a view showing the structure of components constituting the refrigerating room circulation duct shown in FIG. 6;

10 is a transverse sectional view schematically showing a structure of a rear part of the refrigerator compartment of the refrigerator shown in FIG.

11 is a cross-sectional view schematically showing a structure of a rear part of the refrigerator compartment of the refrigerator shown in FIG.

12 is a longitudinal sectional view schematically showing the structure of a refrigerator compartment of the refrigerator shown in FIG.

13 is a front view showing the structure of the lower part of the refrigerator compartment of the refrigerator shown in FIG.

14 is an enlarged cross-sectional view showing the structure of the lower rear portion of the refrigerator compartment of the refrigerator shown in FIG.

FIG. 15 is a schematic diagram showing a configuration of a refrigeration cycle of the refrigerator shown in FIG.

FIG. 16 is a schematic diagram showing a relationship between a control circuit and a refrigeration cycle in the refrigerator shown in FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Refrigerator, 10 ... Opening and closing door, 11 ... Handle part, 12
... Grip part, 13 ... Flat part, 14 ... Hand-held concave part, 15
... Side parts, 20, 30, 40, 50 ... Drawer doors, 22,
52: handle, 23, 53 ... recess, 21, 51: horizontal handle, 24, 45 ... handle, 32, 42 ... handle, 3
3, 43 ... recess, 31, 41 ... horizontal handle, 100 ... refrigerator compartment, 101 ... partition shelf, 102 ... water supply tank, 103 ...
Storage pocket, 104: variable shelf, 105: fixed shelf, 11
0: lighting device, 111: rear panel, 112: front panel, 113: opening, 114: recess, 116: cold air return port, 120: operation display unit, 121: operation unit, 122 ...
Display unit, 123: first button group, 124: second button group, 130 liquid crystal display panel, 140: half mirror, 1
50: ice temperature chilled chamber, 160: direction display means, 160a
... 1st display mark, 160b ... 2nd display mark, 160
c: Third display mark, 161, 162, 165, 16
6, 167: mark, 164: voice display, 170: partition plate, 180, 185: mark, 200: vegetable room, 300
... Switching room, 400 ... Ice making room, 500 ... Freezing room, 601 ...
Compressor, 602: machine room, 606: first cold air passage, 6
06a to 606c: branch passage, 607: second cool air passage, 607a, 607b: branch passage, 608: circulation fan, 609: third cool air passage, 610: air outlet, 611
... Blow-out port, 612 ... Cold air amount distributor, 613 ... First heat insulating partition wall, 614 ... Drain plate, 616 ... Circuit board, 619
… Outlet 620… outlet 622 circulating suction part 62
2a: circulation suction passage, 623: circulation outlet, 623a ...
Circulation suction passage, 625 ... connection passage, 629 ... cool air return port, 632 ... recess, 632a ... duct recess, 636 ...
Inclined surface, 637: cylindrical portion, 660: first cooling chamber, 661
... first heat exchanger, 662 ... first blower fan, 670 ... second cooling chamber, 671 ... second heat exchanger, 672 ... second blower fan, 681 ... outlet, 682 ... outlet, 700 ... cold air direction Changing means, 690 to 692 ... cool air return port, 701 ...
Cylindrical duct, 702: bearing, 703: drive, 7
04 ... motor, 705 ... link part, 706 ... dent part, 7
07 ... hole, 708 ... duct fitting part, 709, 711 ... beam member, 710 ... bearing recessed part, 712a ... bearing projection part, 713 ... projection part, 714 ... connection part, 715 ... lower duct member, 717 ... cold air flow Exit, 718 ... wind direction board.

Continued on the front page (72) Inventor Michihiro Saito 800, Tomita, Oita-machi, Ohira-machi, Shimotsuga-gun, Tochigi Prefecture Inside the cooling division of Hitachi, Ltd. Within the business division

Claims (6)

[Claims] 1. A refrigerator formed inside a box, a cooler for cooling air in the refrigerator, and a plurality of refrigerators provided on a rear wall surface of the refrigerator and formed in a vertical direction of the refrigerator. A cold air passage, and a cool air inlet through which the cold air passage communicates with the refrigerator compartment and cool air from the cooler flows into the refrigerator compartment, wherein the refrigerator is disposed between the plurality of cool air passages. It has an air passage through which air in the refrigerator compartment flows, a blower that blows air in the refrigerator compartment into the air passage, and an outlet provided in the air passage and through which the air in the air passage blows out to the refrigerator compartment. A refrigerator, wherein an opening for the blower to suck in air is provided below a lowermost shelf of a shelf in a refrigerator vertically arranged inside the refrigerator compartment. 2. A refrigerator formed inside a box, a cooler for cooling air in the refrigerator, and a plurality of refrigerators provided on a rear wall surface of the refrigerator and formed in a vertical direction of the refrigerator. A cold air passage, and a cool air inlet through which the cold air passage communicates with the refrigerator compartment and cool air from the cooler flows into the refrigerator compartment, wherein the refrigerator is disposed between the plurality of cool air passages. It has an air passage through which air in the refrigerator compartment flows, a blower that blows air in the refrigerator compartment into the air passage, and an outlet provided in the air passage and through which the air in the air passage blows out to the refrigerator compartment. An refrigerator in which an opening through which the blower sucks air in the refrigerator compartment is disposed behind a storage compartment provided at a lower portion of the refrigerator compartment. 3. A refrigerator formed inside a box, a cooler for cooling air in the refrigerator, and a plurality of coolers provided on a rear wall surface of the refrigerator and formed in a vertical direction of the refrigerator. A cold air passage, a cool air inlet through which the cold air passage communicates with the refrigerator compartment, and cool air from the cooler flows into the refrigerator compartment, and a chilled room provided at a lower portion of the refrigerator compartment. An air passage arranged between the plurality of cold air passages and through which air in the refrigerator compartment flows, a blower that blows air in the refrigerator compartment into the air passage, and air provided in the air passage and in the air passage are provided. A refrigerator having a blow-out port blown out to the refrigerator compartment, wherein an opening through which the blower sucks air is provided behind the chilled compartment. 4. The refrigerator according to claim 2, further comprising a space provided below the storage room, and an opening through which the air in the refrigerator compartment flowing through the space is sucked by the transmitter. 5. The refrigerator according to claim 1, wherein the opening is disposed below a rotation axis of the blower. 6. The refrigerator according to claim 1, wherein the opening of the opening has a wide shape.