JP3226303B2 - 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 structure of an air passage for guiding cool air in a refrigerator or the like, and discharges cool air from a cool air discharge port provided for each food container provided in a coil cover to control the temperature of food in a refrigerator. An object of the present invention is to provide a refrigerator that maintains distribution at a uniform temperature and prevents the temperature of food stored in a food container from rising.

[0002]

2. Description of the Related Art Conventionally, a refrigerator has a plurality of storage compartments such as a freezer compartment and a refrigerator compartment, and a cold air discharge port of a freezer compartment is installed above a coil cover of the freezer compartment in an air passage for guiding cool air.

A conventional example (Japanese Utility Model Laid-Open No. 49-21465) will be described below with reference to FIGS. Reference numeral 1 denotes a refrigerator main body, which is composed of an outer box 2, an inner box 3, and a foaming heat insulating material 4 filled between the two boxes 2, 3. Reference numeral 5 denotes a refrigerating compartment discharge air passage for guiding the cold air from the freezing compartment to the upper portion of the refrigerating compartment, and a convex portion 6 is formed in the refrigerating compartment box. And a duct plate 8 made of a steel plate and screwed to the duct 3. Numeral 9 is a refrigerator air inlet, and numeral 10 is a refrigerator air outlet. Reference numeral 11 denotes a refrigerator air suction passage, reference numeral 12 denotes a refrigerator air intake port, and reference numeral 13 denotes a refrigerator air return port. 14 is a cooler room provided in a superposed state in front of the refrigerator air suction passage 11, 16 is a cooler, 19 is a freezer cold air inlet, 20 is a freezer cold air outlet, and 15 is a fan motor. It is a blower driven.

[0004] In the refrigerator configured as described above,
The cool air cooled by the cooler 16 is first discharged into the freezer compartment 18 through the freezer cool air discharge port 20 of the cooler compartment 14, circulates as indicated by the solid line arrow, and returns to the freezer compartment cool air below the cooler compartment 14 again. It is sucked through the suction port 19.

On the other hand, a part of the cool air discharged into the freezing room 18 enters the cool room discharge air passage 5 from the cool room cool air suction port 9 as shown by a broken line arrow, passes through the cool room cool air discharge port 10, and then enters the cold room. 17, after cooling the refrigerator compartment, enters the refrigerator compartment suction air passage 11 from the refrigerator compartment cold air suction port 12, passes through the refrigerator compartment cold air return port 13, and is sucked from the lower part of the cooler compartment 14. , 18 are kept at an appropriate temperature.

[0006]

However, in the above configuration, when a large amount of food is stored, the temperature distribution of the food in the refrigerator is poor, and a temperature difference occurs between the upper and lower portions, and the temperature of the food in the lower portion is particularly high. There has been a problem that the temperature of the stored food is high when the door body is frequently opened and closed, and the frozen food is melted when the temperature is extremely high.

In view of the above-mentioned conventional disadvantages, the present invention discharges cool air from a cool air discharge port of each food container provided on a coil cover to maintain a uniform temperature distribution of food in a refrigerator and a door body. It is intended to provide a refrigerator which prevents the stored food from being heated even if the frequency of opening and closing of the refrigerator is high.

[0008]

According to the present invention, there is provided a refrigerator according to the present invention, comprising: a refrigerator main body comprising an outer box, an inner box, and foam insulation filled between the outer box and the inner box; In the refrigerator main body, a refrigerator compartment partitioned by a partition wall at an upper portion, a freezing compartment partitioned at a lower portion, a cooler installed at the back of the freezer compartment, and an insulating wall partitioning the cooler and the freezer compartment A blower that circulates cold air that has exchanged heat with the cooler to the freezing compartment and the refrigerator compartment; and a coil cover disposed on an inner surface of the freezing compartment at a predetermined interval in front of the heat insulating wall and the blower. One end is opened to the back surface space of the coil cover, and the discharge side of the blower communicates with the discharge side of the blower and the refrigerator compartment; and one end is opened to the back space of the coil cover, and the suction side of the blower is opened. Refrigeration that communicates with the refrigerator compartment A return air path and a vertical path of the coil cover including a portion facing the heat insulating wall so as to supply cold air to a plurality of food containers provided vertically in the freezer compartment while forming the predetermined interval as an air path. A plurality of cool air outlets, and a cool air inlet provided in the coil cover for collecting cool air cooled in the freezer compartment, wherein the cool air inlet is disposed below the cool air outlet. And, while forming a projecting portion projecting across the width direction between the cold air suction port and the cold air discharge port on the surface of the coil cover to partition upper and lower portions, the projecting portion is close to the rear end of the food container, The cool air discharged from the cool air discharge port is guided into the food container and the bypass of the cool air flow between the cool air discharge port and the cool air suction port is suppressed.

[0009] The cold air suction port is formed by closing the front surface of a drain pipe for discharging the defrost water from the cooler to the outside of the refrigerator.

[0010]

The refrigerator according to the present invention has the above-mentioned construction, and cool air is discharged and supplied from a plurality of cool air discharge ports of the coil cover to a plurality of food containers provided in a vertical direction. By separating the convection discharge side and the suction side of the freezing room and suppressing the bypass of the cool air flow, the temperature distribution of the food stored in the food container is maintained at a uniform temperature and the temperature of the food container may increase. Thus, even if the door body is frequently opened and closed, the temperature of the food stored in the food container can be prevented from rising.

Further, since the cool air suction port closes the front of the drain pipe of the defrost water, the amount of frost formed on the cooler is reduced.

[0012]

An embodiment of the present invention will be described below with reference to the drawings. The same components as those of the conventional example are denoted by the same reference numerals, and description thereof will be omitted.

Reference numeral 1 denotes a refrigerator body, which comprises an outer box 2, an inner box 3, and a foam insulating material 4 filled between the two boxes 2, 3. Reference numeral 5 denotes a refrigerating compartment discharge air passage for guiding the cold air in the freezing compartment to the upper portion of the refrigerating compartment. Reference numeral 9 denotes a refrigerator air inlet, and reference numeral 10 denotes a refrigerator cold air outlet, which has a plurality of refrigerator air outlets for uniformly discharging cool air to a plurality of shelves 21 of the refrigerator.

Reference numeral 11 denotes a refrigerating room suction air passage;
Numeral denotes a refrigerator air inlet, and numeral 13 denotes a cool air return port, which is arranged to return to the side surface of the cooler 16. 14 is a cooler room provided in the side part of the refrigerating room suction air passage 11 in an insulated state, 16 is a cooler, 19 is a freezer room cool air inlet, 20 is a freezer room cool air outlet, and 15 is a fan motor. It is a blower driven. 22 is the cooler 16
A heat insulating wall for partitioning the refrigerator 1
The cold air exchanged in step 6 is circulated to the freezing room 18 and the refrigerator room 17.

Reference numeral 23 denotes a coil cover which is located in front of the cooler 16 and distributes cool air. A plurality of freezing chamber discharge ports 20 provided on the coil cover 23 are provided with a plurality of cooling air outlets 20 provided in the freezing chamber 18. Are disposed at positions where cold air is discharged and supplied to the food containers 24, respectively, and the projecting portion 25 provided on the coil cover 23 and the rear flange portion 27 of the lowermost food container 26
This defines a convection discharge side and a suction side of the freezer compartment.

Reference numeral 28 denotes a water receiving tray which receives defrost water obtained by periodically defrosting frost formed on the cooler 16 by an automatic timer, and drains the water from the drainage pipe 29 to the outside of the refrigerator. 30 is a freezer air inlet 1
9 is a blockage at the front of the drain pipe 29 of the defrost water.

With the above configuration, the cooler 16
The cool air cooled by the heat exchange is cooled by the fan 15 to the freezer compartment 18 through the plurality of freezer cool air outlets 20 provided in the coil cover 23 to the plurality of food containers 24 installed in the freezer compartment 18 respectively. Is discharged and supplied, and the circulating cool air in the freezing room 18 circulated as indicated by the solid line arrow is sucked into the lower part of the cooler room 14 again.

On the other hand, a part of the cool air discharged into the freezer compartment 18 enters the refrigerating compartment discharge air passage 5 from the freezer cool air discharge port 9 as shown by a broken line arrow, and is uniformly distributed on a plurality of shelves 21 of the refrigerating compartment 17. After entering the refrigerator compartment 17 through a plurality of refrigerator compartment cold air discharge ports 10 for discharging the cold air, and after cooling the refrigerator compartment, the refrigerator compartment cool air suction port 12 enters the refrigerator compartment suction air passage 11 and the refrigerator compartment cold air return port. 13, the air is sucked from the lower part of the cooler room 14, the refrigerator room 17 and the freezer room 18 are kept at an appropriate temperature, the temperature distribution of the food stored in the food containers 24 and 26 is maintained at a uniform temperature, and the door is opened. Even if the frequency of opening and closing the body is high, it is possible to prevent the temperature of the food stored in the food containers 24 and 26 from rising.

Further, the protrusion 25 provided on the coil cover 23 and the rear flange 27 of the lowermost food container 26 are provided.
Divides the discharge side and the suction side of the convection of the freezing room, so that the back of the lowermost food container 26 is not bypassed by the refrigerated room 18 circulating cold air, so it is stored in the lowermost food container 26. The temperature of the food stored in the food container 26 can be prevented from increasing even when the frequency of opening and closing the door body is high.

Further, the frost formed on the cooler 16 is periodically defrosted by an automatic timer, and a water tray 28 for receiving defrost water is provided.
Since the closing portion 30 is provided in the freezing compartment cool air suction port 19 corresponding to the front part of the drain pipe 29 for draining out of the refrigerator, the amount of frost formed on the cooler 16 is reduced, and clogging due to frost formation on the cooler 16 is prevented. Insufficient cooling can be eliminated.

[0021]

As described above, the refrigerator of the present invention has the following features.
An outer box, an inner box, a refrigerator body including a foam insulation material filled between the outer box and the inner box, a refrigerator compartment partitioned at the top by partition walls in the refrigerator body, and a lower compartment The freezer compartment, a cooler installed at the back of the freezer compartment, an insulating wall separating the cooler and the freezer compartment, and cool air exchanged by the cooler to the freezer compartment and the refrigerator compartment. A blower to be circulated, a coil cover disposed on the inner surface of the freezer compartment at a predetermined distance in front of the heat insulating wall and the blower, and one end opened to the back space of the coil cover and a discharge side of the blower. A refrigerating chamber discharge air path communicating with the refrigerating chamber, a refrigerating chamber return air path having one end opened to a back space of the coil cover and communicating between the suction side of the blower and the refrigerating chamber; And the frozen room A plurality of cold air outlets provided in the vertical direction of the coil cover including a portion facing the heat insulating wall so as to supply cold air to a plurality of food containers provided in the vertical direction, and cool air cooled in the freezer compartment is collected. A cold air suction port provided in the coil cover ;
Located below the cool air discharge port, on the surface of the coil cover
A protrusion extends across the width between the cool air inlet and the cool air outlet.
To form a projecting portion defining the upper and lower out, the
The protruding part is close to the rear end of the food container.
Introduces cool air discharged from the outlet, cool air outlet and cool air suction
It is arranged to suppress the bypass of the cool air flow between the entrance
To keep the refrigerator compartment and freezer compartment at the appropriate temperature,
Temperature distribution of food stored in multiple food containers
Can maintain a uniform temperature, and the frequency of opening and closing the door is high
At least, prevent the temperature of food stored in each food container from rising.
Can be.

Further, since the cool air discharged from the cool air discharge port does not pass through the back surface of the food container to the lower cool air suction port, it is possible to prevent the temperature of the food stored in the food container from increasing. Even if the door is frequently opened and closed, it is possible to prevent the temperature of the food stored in the food container from rising.

Further, the cool air suction port closes the front of the drain pipe for discharging the defrost water from the cooler to the outside of the refrigerator, so that the amount of frost formed on the cooler is reduced, and the cooler is clogged by the frost. Insufficient cooling can be eliminated.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a refrigerator showing one embodiment of the present invention.

FIG. 2 is a front view of the refrigerator with internal components installed.

FIG. 3 is a front view of the refrigerator with components inside the refrigerator removed.

FIG. 4 is a cross-sectional view around a cooler of the refrigerator.

FIG. 5 is a longitudinal sectional view around a cooler of the refrigerator.

FIG. 6 is a front view of the interior of a conventional refrigerator.

FIG. 7 is a sectional view of a main part of a conventional refrigerator.

[Explanation of symbols]

 2 Outer box 3 Inner box 4 Foam insulation material 5 Cold room discharge air path 7 Partition wall 11 Cold room return air path 15 Blower 16 Cooler 17 Cold room 18 Freezer 19 Freezer cold air inlet 20 Freezer cold air outlet 22 Thermal insulation Wall 23 Coil cover 24 Food container 25 Projection 26 Lowermost food container 27 Rear flange portion of lowermost food container 29 Drain pipe 30 Closed portion

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-1-203878 (JP, A) Fully open 49-21465 (JP, U) Fully open 1956-92075 (JP, U) (58) Investigation Field (Int.Cl. ⁷ , DB name) F25D 17/08 304 F25D 25/00

Claims (2)

(57) [Claims] 1. A refrigerator body comprising an outer box, an inner box, a foamed heat insulating material filled between the outer box and the inner box, and a refrigerator compartment partitioned at an upper part by a partition wall in the refrigerator body. A freezer compartment defined at a lower portion, a cooler installed at the back of the freezer compartment, an insulating wall separating the cooler from the freezer compartment, and a cooler that exchanges heat with the cooler into the freezer compartment. And a blower circulating to the refrigerator compartment, a coil cover arranged on the inner surface of the freezer compartment at a predetermined interval in front of the heat insulating wall and the blower, and one end is opened to a back space of the coil cover. A refrigerating chamber discharge air path communicating between the discharge side of the blower and the refrigerating chamber, a refrigerating chamber return air path opening one end to a back space of the coil cover and communicating between the suction side of the fan and the refrigerating chamber; The interval between the wind path A plurality of cold air outlets provided in the up and down direction of the coil cover including a portion facing the heat insulating wall so as to supply cold air to a plurality of food containers provided in the up and down direction in the freezing room; and a cold air suction port provided in the coil cover to recover, prior to
The cold air inlet is located below the cold air outlet, and
The cold air inlet and the cold air discharge are provided on the surface of the coil cover.
Projection that protrudes across the width direction between the mouth and separates the top and bottom
Part, and the protruding part is formed with the rear end of the food container.
Close and discharge cold from the cold air discharge port into the food container
And guide the air between the cool air discharge port and the cool air suction port.
Refrigerator arranged to suppress the bypass of cold airflow between them . 2. A refrigerator according to claim 1 the cold air suction port which closes the front of the water discharge pipe for discharging the defrosted water cooler outside-compartment.