JPH05141840A - Cold storage box - Google Patents

Abstract

PURPOSE:To improve the volume efficiency of a refrigerating chamber and eliminate insufficient cooling caused by the clogging in a cooler by providing a heat insulation wall that divides a cooler and refrigerating chamber, the suction duct of a cold storage chamber that communicates with a coil cover and the cooler, and heat insulation wall that divides this duct and the cooler. CONSTITUTION:An outer box 2, inner box 3, foamed heat insulation material 4, upper cold storage chamber 22 and lower cold storage chamber 23 that are divided in the rear of the refrigerating chamber 23 and heat insulation wall 26 that divides the cooler 25 and refrigerating chamber 23, coil cover 27 that circulates cold air that exchanges heat with the cooler 25 to the cold storage chamber 22 and refrigerating chamber 23, and blower 24 are provided. A cold storage chamber suction duct communicates from the cold storage chamber 22 to the lower side face of the cooler 25, and the cold storage chamber suction duct and the cooler 25 are divided by a heat insulation wall, and a cold storage chamber suction duct is provided on both right and left sides of the cooler 25. Accordingly, the heat insulating material in the back face of the cooler can be made thinner and volume efficiency is improved, and the dispersion of frosting at the time of high laod, etc., can be made and insufficient cooling caused by clogging in the cooler can be eliminated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of an air passage for guiding cold air in a refrigerator or the like.

[0002]

2. Description of the Related Art Conventionally, a plurality of storage chambers such as a freezing chamber and a refrigerating chamber are provided, and a cold air discharge port of the freezing chamber is installed above a coil cover of the freezing chamber in an air passage for guiding cold air.

A conventional example (Japanese Utility Model Laid-Open No. 49-21465) will be described below with reference to FIGS. 4 and 5. Reference numeral 1 denotes a refrigerator body, which is composed of an outer box 2, an inner box 3 and a foaming heat insulating material 4 filled between the boxes 2 and 3. Reference numeral 5 denotes a refrigerating compartment discharge duct that guides cold air from the freezing compartment to the upper part of the refrigerating compartment, which forms a convex portion 6 on the refrigerating compartment box, and a heat insulator 7 installed on the back surface thereof and the refrigerating compartment box 3 through the heat insulator 7. It is composed of a duct plate 8 made of a steel plate screwed to.

Reference numeral 9 denotes a cold air intake port of the freezing room, which is 1
Reference numeral 0 is a cold air discharge port of the refrigerating room. Further, 11 is a refrigerating room suction duct, 12 is a refrigerating room cold air suction port, and 13 is a refrigerating room cold air return port. Reference numeral 14 is a cooler room provided in a superposed state in the front part of the refrigerating room suction duct 11, 16 is a cooler, 19 is a freezing room cold air suction port, 20 is a freezing room cold air discharge port, and 15 is driven by a fan motor. It is a blower.

In the refrigerator constructed as described above,
The cool air cooled by the cooler 16 is first discharged into the freezer compartment 18 from the freezer compartment discharge port 20 of the cooler compartment 14, circulates as shown by the solid arrow, and again the freezer compartment cool air intake opening at the lower part of the cooler compartment 16. 19 is sucked.

On the other hand, a part of the cold air discharged into the freezing compartment 18 enters the freezing compartment cold air intake 9 into the refrigerating compartment discharge duct 5 as indicated by the broken line arrow, and passes through the refrigerating compartment cold air discharge opening 10 to cool the refrigerating compartment 17. After cooling inside the refrigerating chamber, it enters the refrigerating chamber suction duct 11 through the refrigerating chamber cold air suction port 12,
It is sucked from the lower portion of the cooler 16 through the cold air return port 13 of the refrigerating chamber to keep the respective chambers 17 and 18 at an appropriate temperature.

[0007]

However, in the above-mentioned structure, since the cold air suction duct from the refrigerating chamber is installed on the back side of the cooler, the door is frequently opened and closed under a high load, or the door is forgotten to be closed. In order to prevent frost from forming inside the refrigerating room suction duct, it is necessary to secure a heat insulating thickness between the back of the cooler and the refrigerating room suction duct, and also between the refrigerating room suction duct and the outer case. There is a possibility that dew may condense on the surface of the outer box, and it is necessary to thicken the heat insulating material. As a result, the size from the outer box to the coil cover is considerably required, and there is a problem that the capacity of the freezing compartment cannot be secured sufficiently.

Further, since the suction duct for the refrigerating compartment is narrow, there is a problem that cold air is returned to a part of the cooler and frost is locally formed to cause poor clogging.

The present invention provides a refrigerator having improved freezing compartment volume efficiency and improved clogging.

[0010]

In order to solve the above problems, a refrigerator according to the present invention comprises an outer box, an inner box, a foam insulation material, an upper refrigerating compartment partitioned by partition walls, and a lower freezer compartment. A cooler installed on the back surface of the freezer compartment, a heat insulating wall A for partitioning the cooler and the freezer compartment, and a coil cover for circulating cold air heat-exchanged by the cooler to the refrigerating compartment and the freezer compartment. A blower, a refrigerating compartment suction duct communicating with the lower part of the cooler compartment from the refrigerating compartment, a heat insulating wall B partitioning the refrigerating compartment suction duct and the cooler, and the refrigerating compartment suction duct on both the left and right sides of the cooler It is installed on the side of the.

[0011]

The refrigerator of the present invention has the above-mentioned structure. The cool air, which has been heat-exchanged by the cooler, is circulated in the refrigerating chamber by the blower and is passed to the cooler through the refrigerating chamber suction ducts communicating with the lower side surfaces of the cooler. Return.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The same components as those of the conventional example will be described with the same reference numerals.

Reference numeral 1 denotes a refrigerator body, which is composed of an outer box 2, an inner box 3 and a foaming heat insulating material 4 filled between the boxes 2 and 3. 21 is a partition wall, and a refrigerating room 2 is provided above.
2. A freezer compartment 23 is formed in the lower part. Reference numeral 24 is a blower for forcibly circulating the cool air cooled by the cooler 25 to the refrigerating compartment 22 and the freezing compartment 23. Reference numeral 26 is a heat insulating material A for partitioning the cooler 25 and the freezer compartment 23, and 27 is the cooler 25.
The cover coil is a cover coil for distributing the cool air cooled by the cold air to the refrigerating compartment 22 and the freezing compartment 23, and is provided with a freezing compartment discharge port 28 and a freezing compartment suction port 29. Reference numeral 30 denotes a refrigerating compartment discharge duct that guides cool air to the refrigerating compartment 22 by the blower 24.

Reference numeral 31 is a refrigerating compartment cool air intake port communicating with the refrigerating compartment discharge duct 30, 32 is a refrigerating compartment cool air discharge port, and a plurality of refrigerating compartment cold air discharge ports are provided so as to uniformly discharge the cool air. Has been. Reference numeral 34 is a refrigerating compartment suction port, and 35 is a refrigerating compartment suction duct connected to the refrigerating compartment suction port 34, which are provided on both side surfaces of the cooler 25. Reference numeral 36 is a heat insulating material B that partitions the refrigerating compartment cold air intake port 31, the freezing compartment 23, and the refrigerating compartment suction duct 35. In addition, the refrigerating room suction duct 35,
It communicates with the lower parts of both side surfaces of the cooler 25.

In such a structure, the cool air that has been heat-exchanged and cooled by the cooler 25 is coiled by the blower 24.
7. A plurality of cold air discharge ports 28 provided in the freezing chamber 23
Is discharged inside. Then, it circulates in the freezer compartment 23, is sucked into the freezer compartment cool air suction port 29 again, and is sucked into the lower part of the cooler 25. On the other hand, in the refrigerating compartment 22, the cold air diverted by the cover coil 27 flows through the refrigerating compartment cold air intake duct 31 in the upper part of the cooler 25 through the refrigerating compartment discharge duct 30, and from the refrigerating compartment cold air discharge outlet 32. It is evenly discharged onto the plurality of shelves 33 in 22.

The cold air circulated in the refrigerating compartment 22 returns to the cooler 25 from the lower portions of both side surfaces of the cooler 25 through the refrigerating compartment suction duct 35 through the refrigerating compartment suction port 34 again.

Because of the above structure, the refrigerator compartment 22
Since the refrigerating room suction ducts 35 from inside are installed on both side parts of the cooler 25, it is not necessary to thicken the heat insulating material on the back side of the cooler 25, and a thin wall is achieved, so that the capacity in the freezing room 23 can be secured and the volume can be secured. The efficiency can be improved. Also the door
It is possible to disperse frost on the cooler 25 when the load is frequently opened and closed, and to eliminate the lack of cooling due to clogging of the cooler 25.

[0018]

As described above, the refrigerator of the present invention is
An outer box, an inner box, a foam insulation material filled between both boxes, an upper refrigerating compartment partitioned by partition walls, a lower freezer compartment, and a cooler installed on the back surface of the freezer compartment, A heat insulating wall A that divides the cooler and the freezer compartment, a coil cover that circulates the cold air that has been heat-exchanged in the cooler into the refrigerating compartment and the freezer compartment, a blower, and left and right side surfaces of the cooler from the refrigerating compartment. Since the refrigerating compartment suction duct communicating with the lower part, the heat insulating wall B partitioning the refrigerating compartment suction duct and the cooler, and the refrigerating compartment suction duct are installed on both left and right side surfaces of the cooler. It is not necessary to increase the thickness of the heat insulating material on the back surface of the cooler, and the wall thickness can be reduced, so that the volumetric efficiency of the freezer can be improved. Further, the frost dispersion on the cooler at the time of high load such as frequent door opening / closing can be achieved, and the insufficient cooling due to the clogging of the cooler can be eliminated.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a refrigerator showing an embodiment of the present invention.

FIG. 2 is a front view of the refrigerator with internal parts removed.

FIG. 3 is a transverse cross-sectional view around the cooler of the refrigerator.

FIG. 4 is a front view of the inside of a conventional refrigerator.

FIG. 5 is a vertical sectional view of a conventional refrigerator.

[Explanation of symbols]

 2 Outer Box 3 Inner Box 4 Foam Insulation 21 Partition Wall 22 Refrigerator 23 Freezer 24 Blower 25 Cooler 26 Insulation Wall A 27 Coil Cover 35 Refrigerator Suction Duct 36 Insulation Wall B

Claims (1)

[Claims] 1. An outer box, an inner box, a foamed heat insulating material filled between the boxes, and an upper refrigerating compartment defined by partition walls.
A lower freezer compartment, a cooler installed on the back surface of the freezer compartment, a heat insulating wall A for partitioning the cooler and the freezer compartment, and cold air heat-exchanged by the cooler is circulated to the refrigerator compartment and the freezer compartment. A cooling coil cover, a blower, a refrigerating compartment suction duct which is provided on both sides of the refrigerating compartment from the refrigerating compartment and communicates with a lower part of the cooler, and a heat insulating wall B for partitioning the refrigerating compartment suction duct and the cooler. And a refrigerator consisting of.