JP3198567B2 - refrigerator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigeration room having a ceiling surface and a ridge line formed by a back surface or a side surface of the refrigeration room, which is partially recessed toward the heat insulating material. Refrigerators facing the return air duct that connects the rooms.

[0002]

2. Description of the Related Art Conventionally, this type of structure will be described with reference to FIG. 4. Reference numeral 22 denotes a refrigerator main body, and the main body 22 has a freezer compartment 23 at an upper portion and a refrigerator compartment 24 at a lower portion. 25 and 26 are doors for closing the front openings of the chambers 23 and 24, 25 is a freezer door, 26 is a refrigerator door, and 27 is an inner box forming the freezer 23 and the refrigerator 24 above. Yes, 29 indicates an outer box, and 28 indicates a heat insulating material.

[0003] Reference numeral 30 denotes a partition wall for partitioning the freezer compartment 23 and the refrigerator compartment 24, 31 denotes a cooler provided on the back wall of the freezer compartment 23,
Reference numeral 32 denotes a partition plate for partitioning the cooler 31 and the freezing room 23, 3
Reference numeral 6 denotes a radiation type defrosting tube heater installed below the cooler 31; 37, a dew tray installed below the cooler 31 and the defrosting tube heater 36; At this time, the defrost water received by the dew receiving tray 37 is discharged to the outside via the outlet 37a.

Reference numeral 38 denotes a return air passage formed integrally with the dew tray 37. Although not shown in the drawing, the return air passage 38 is a return air passage for returning the cool air forcedly circulated to the refrigerator compartment 24 to the lower part of the cooler 31, and is directed to the refrigerator compartment 24 side, which is one end of the return air passage 38. The connection port is located closer to the center of the refrigerator than the ridge line formed by the ceiling surface and the back surface of the refrigerator compartment 24.

[0005] The other end is located below the cooler 31. 39 is a cover piece provided above the return air passage 38;
Reference numeral 40 denotes a heat insulating sheet affixed to the upper surface of the cover piece 39, and the cover piece 39 with the heat insulating sheet 40 prevents the cool air immediately below the cooler 31 from entering the return air path 38 into the return air path 38. 41 is not shown in the refrigerator compartment 24,
It is a shelf for a food storage attached by a shelf rib or the like.

Incidentally, a conventional example of this kind includes Japanese Utility Model Publication No. 61-933.
No. 1 is shown.

[0007]

The conventional refrigerator having such a configuration has the following problems. When the storage material Y placed on the shelf 41 abuts against the back wall surface of the inner box 27, the storage material Y closes the opening end 38a of the return air passage 38. That is, when the height is slightly lower than the height of the storage Y, the opening end 38a of the return air passage 38 is closed by the storage Y or the air path resistance is increased even if it is not closed, so that the function of the refrigerator is lost. Was a factor. The present invention has been made in view of such a point. The purpose is to increase the cooling air circulation and
It is to provide a refrigerator with good efficiency.

[0008]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a storage room.
And a freezing room provided above the storage room,
Cooling provided at the rear of the chamber with a cooler inside
Chamber, and attached to the cooler provided below the cooler
A dew receiving section for receiving the water in which the molten frost has melted;
An opening located below the cooler and above the dew receiving portion
And a concave portion provided on the ceiling surface or the back surface of the storage room
Provided in communication with the opening provided on the
An air flow through which air in the storage chamber flows to the cooler room.
This is achieved by a refrigerator with a road . Further, the concave
And an inclined surface formed on the concave surface of the portion. Further, provided in the storage room,
This is achieved by including a shelf located on the refrigerator front side of the recessed surface .

[0009]

According to the above-mentioned structure, a storage object placed in a storage room can be stored.
Therefore, the opening of the air passage where the air in the storage chamber returns is closed.
To keep the refrigerator functioning.
Dripping.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to an embodiment shown in the drawings. FIG. 1 is a vertical sectional view of a refrigerator provided with an embodiment of the present invention, and FIG. FIG.
FIG. 3 is a sectional view taken along line AA of FIG. In the figure, 1 is a refrigerator main body, and this refrigerator main body 1 has a freezer compartment 2 and a refrigerator compartment 3 therein. 4 and 5 are doors for closing the front openings of the chambers 3 and 4, 4 is a freezer door, 5 is a refrigerator door, 6 is the room 3,
4 shows an inner box forming 4;

The refrigerator main body 1 is composed of the inner box 6, the heat insulating material 7, the outer box 8, and the like. Reference numeral 9 denotes a partition wall for partitioning between the freezer compartment 3 and the refrigeration compartment 4;
It is installed in a cooling room provided on the back wall of the vehicle. Reference numeral 11 denotes a partition plate for partitioning the cooler 10 from the freezer compartment 2;
Is provided with an outlet 12 and an inlet 13. 19 is a blower for circulating cool air installed at the upper part of the cooler 10;
Numeral 0 denotes the fan, which is opposed to the outlet 12 and blows out the cool air passing through the cooler 10 from the cooling chamber side to the freezing chamber 2 side.

After cooling the freezing chamber 2, the cool air blown into the freezing chamber 2 is sucked into the cooling chamber containing the cooler 10 again through the suction port 13. On the other hand, part of the cool air that has passed through the cooler 10 reaches the refrigerator compartment from the discharge port 14 through a cool air passage (not shown) provided in the partition plate 11. Then, after cooling the refrigerator compartment 3, it circulates as indicated by an arrow P and returns to the cooler 10 via a return air passage described later.

Reference numeral 15 denotes a radiation type defrosting tube heater provided below the cooler 10; 16 denotes a dew tray installed below the cooler 10 and the defrosting tube heater 15; The frost adhering to the vessel 10 receives the defrost water generated when the frost is melted by the previous defrost tube heater. Although not shown in the figure, the defrost water accumulated in the dew tray 16 is discharged to the outside via a water introduction port 16a provided in the dew tray 16.

Reference numeral 17 denotes a return air passage. This return path 17
Is formed integrally with the above-mentioned dew tray 16, and one opening end 17 a is formed by partially recessing the ridge of the inner box 6 formed by the ceiling surface and the back surface of the refrigerator compartment 3 toward the heat insulating material 7. It faces the box recess 6a. Reference numeral 6b denotes an inclined surface of the inner box recess which is inclined at a gentler angle than the rear side of the refrigerator compartment 3 which forms a part of the inner box recess 6a. The inclined surface 6b of the inner box recess is designed to easily draw in the circulating cool air as indicated by the arrow P described above. 6c is an inclined surface of the inner box concave portion, but is an embodiment in which the shelf 21 is located in the middle of the inclined surface.

Further, another open end 17 of the return air passage 17 is provided.
b is connected to an opening 16c provided in the middle of a rear wall 16b (a wall communicating with the heat insulating material 7) of the dew receiving tray 16. Therefore, the return air path 17 is located in the heat insulating material 7 as shown in FIG. In other words, on the extension of the return air passage 17 is the heat insulating material 7, not the cooler 10. The cool air returning from the refrigerator compartment 3 described above is sucked through the opening end 17a of the return air passage 17 and the cooler 10 through the other opening 17b.
It is something that is sucked into the side.

Reference numeral 18 denotes a roof provided on the rear wall 16b of the dew tray 16 to which one end of the return air passage 17 is connected. The roof 18 is provided with defrost water dripping from the cooler 10 so that the return air path 17
It is to prevent entering. Of course, when the operation of the refrigerator is stopped, the cool air falling from the cooler 10 is also prevented from entering the return air passage 17 to some extent.

In the case of a refrigerator having such a configuration,
Even when the storage object X placed on the shelf 21 is hit against the back of the inner box 6, the open end 1 of the return air passage 17 on the refrigerator compartment side is provided.
Since the ridge of the inner box 6 formed by the ceiling surface and the back surface of the refrigerator compartment 3 is partially recessed toward the heat insulating material 7, the opening end 17 a of the return air passage 17 on the refrigerator compartment side is provided. Is the storage X
And the circulating cool air at that time can be circulated as indicated by arrows Q, R, and S, and therefore does not impair the airflow resistance of the return airflow path 17 without being blocked until it is closed. a.

Further, since the return air path 17 for returning the cool air that has cooled the refrigerator compartment 3 to the cooler 10 is not located below the projection surface of the cooler 10 first, the defrost water is removed when the cooler 10 is defrosted. Of course, it is difficult for the cool air flowing down from the cooler 10 to enter the return air passage 17 when the operation of the refrigerator is stopped. Of course, at this time
The roof 18 functions to prevent water and cold air from entering.

On the other hand, air containing moisture entering the return air passage 17 by natural convection from the refrigerator compartment side returns to the cooler 10 without being cooled in the middle of the return air passage 17. This is because the return air passage 17 is buried in the foamed in-situ heat insulating material as described above.

For the above reasons, a refrigerator having the structure of the present invention can surely achieve the above-mentioned object.

[0021]

According to the present invention , the circulation of cold air is increased.
A refrigerator with high cooling efficiency can be provided.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a refrigerator provided with an embodiment of the present invention.

FIG. 2 is an enlarged view of the vicinity of a return air path in FIG.

FIG. 3 is a sectional view taken along line AA of FIG. 2 of the refrigerator provided with the embodiment of the present invention.

FIG. 4 is an enlarged view of the vicinity of a return wind path showing a conventional example.

[Explanation of symbols]

1 ... refrigerator body, 2 ... freezer room, 3 ... refrigerator room, 4, 5 ...
Door, 6: inner box, 7: heat insulating material, 8: outer box, 9: partition wall, 1
0 ... Cooler, 11 ... Partition plate, 12 ... Outlet, 13 ... Suction port, 14 ... Discharge port, 15 ... Defrosting tube heater, 16 ... Dew tray, 17 ... Return air path, 18 ... Roof, 19 ... Blower, 20
... Fan, 21 ... Shelves

──────────────────────────────────────────────────続 き Continued on the front page (56) References JP-A 2-140282 (JP, U) JP-A 63-110886 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) F25D 17/08 304

Claims (3)

(57) [Claims] 1. A storage room, a freezer room provided above the storage room, a cooler room provided at a rear part of the freezer room and having a cooler disposed inside thereof, and a lower part of the cooler. A dew receiving portion provided for receiving water in which frost attached to the cooler is melted, an opening located below the cooler of the cooler chamber and above the dew receiving portion, and a ceiling surface of the storage room or A refrigerator provided with an air passage provided in communication with an opening provided on a concave surface of a concave portion provided on a back surface and for allowing air in the storage chamber to flow to the cooler room. 2. The refrigerator according to claim 1, further comprising an inclined surface formed on a concave surface of the concave portion . 3. The recessed surface provided in the storage chamber.
The refrigerator according to claim 1 , further comprising a shelf disposed on a front side of the refrigerator.