JPH08189746A - Refrigerator - Google Patents

Abstract

PURPOSE: To make the partitioning walls thin, and expand the internal capacity of a refrigerator by a method wherein return cold air from the refrigerating chamber is returned to the condenser from a suction port of the refrigerating chamber, which is located above a low temperature chamber in the refrigerating chamber and at the far end of the refrigerating chamber, through a refrigerating chamber return duct on the back part of the refrigerator. CONSTITUTION: A refrigerating chamber damper thermostat 18 is provided on the back part of a refrigerating chamber 2 of a refrigerator main body 29 to regulate the quantity of cold air to be fed by a blower 17, and the cold air is made to flow into a refrigerant chamber 2 from refrigerating chamber outlets 31 for respective stages being formed by shelves 3 which are provided in the refrigerating chamber 2, through a refrigerating chamber discharging duct 30 being provided on the back part of the refrigerating chamber 2. A refrigerating chamber suction port 32 which is provided above a low temperature chamber 13 and on the lowest stage on the back part of the refrigerating chamber 2 communicates with a lower part of a vegetable chamber 10 through a refrigerating chamber return duct 22, and the refrigerating chamber return cold air is made to flow in. Since the return cold air of the refrigerating chamber 2 flows through the refrigerating chamber return duct 22, the refrigerating chamber return duct is not required on partitioning walls, and therefore, the partitioning walls do not become thick, and the internal capacity of the refrigerator can be expanded.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a refrigerating room in order from the top,
The present invention relates to a refrigerator in which a freezer compartment is provided in the center and a vegetable compartment is provided in the lower part, and a low temperature compartment is provided in the refrigerating compartment.

[0002]

2. Description of the Related Art Refrigerators often have a freezing room at the top and a refrigerating room, a low temperature room, and a vegetable room at the bottom, but in recent years, the frequency of use of each room is higher in the refrigerating room than in the freezing room. Therefore, considering the opening and closing of the door and the taking in and out of food, it is possible to provide a refrigerator room, a freezer room, and a vegetable room from the top in a large refrigerator, and to arrange a low temperature room at the bottom of the refrigerator room for storing fish etc. for about a week. Has been.

A conventional refrigerator is disclosed in Japanese Patent Laid-Open No. 4-1039.
There is one disclosed in Japanese Patent Publication No. 84. A conventional refrigerator will be described below with reference to the drawings. FIG. 5 is a perspective view of a conventional refrigerator. FIG. 6 is a vertical sectional view of a conventional refrigerator.

In these figures, 1 is a refrigerator main body, 2 is a refrigerating room provided above the refrigerator main body 1, and a shelf 3 is arranged inside. A refrigerating room door 4 has a door shelf 5 inside, and a gasket 6 is arranged around the refrigerating room door to prevent cold air from flowing out of the room. 7 is a freezer provided in the center, 8
Is a freezer compartment door, and a gasket 9 is arranged around it to prevent cold air from flowing out of the room. 10 is a vegetable room at the bottom,
Reference numeral 11 denotes a vegetable compartment door, and a gasket 12 is arranged around the vegetable compartment door to prevent cold air from flowing out of the room. Reference numeral 13 is a low temperature room provided at the bottom of the refrigerating room 2 and is maintained at a partial freezing temperature of about -3 ° C. Further, a low temperature chamber door 14 is provided on the front surface portion. Reference numeral 15 is a communication opening to the refrigerating compartment 2 which is formed below the low temperature compartment door 14. Reference numeral 16 denotes a cooler provided at the back of the freezer compartment 7, and the cooled cool air is blown to each of the compartments by a blower 17. Reference numeral 18 denotes a refrigerating compartment damper thermostat provided at the back of the refrigerating compartment 2 for adjusting the amount of cool air sent by the blower 17 to further flow into the refrigerating compartment 2 through the refrigerating compartment discharge duct 19 through the refrigerating compartment discharge port 20. Two
Reference numeral 1 denotes a refrigerating compartment suction port provided at the bottom of the refrigerating compartment, which communicates with the lower portion of the vegetable compartment 10 via a refrigerating compartment return duct 22 and allows return cold air from the refrigerating compartment to flow in. Reference numeral 23 is a low temperature room damper thermostat provided at the back of the refrigerating room 2 and controls the amount of cold air sent by the blower 17 to further cool the room through the low temperature room discharge duct 24 and from the low temperature room discharge port 25 to the low temperature room 1.
Inflow to 3. The cold air discharged from the freezer outlet 26 is sucked through the freezer inlet 27. Reference numeral 28 denotes a vegetable compartment return duct, which cools the cold air flowing into the vegetable compartment 10 with a cooler 1
Return to the bottom of 6.

The operation of the refrigerator thus constructed will be described below. A part of the cool air blown by the blower 17 is sent directly to the freezer compartment 7 from the freezer compartment outlet 26. The sent cool air is returned to the cooler 16 through the freezer suction port 27. On the other hand, the remaining part of the cool air blown by the blower 17 is the refrigerating room damper thermostat 1.
An appropriate amount of cold air is adjusted through 8 to be uniformly sent to each stage in the refrigerating compartment 2 from the refrigerating compartment outlet 20 through the refrigerating compartment discharge duct 19 to maintain an appropriate temperature. The inflowing cold air is sent to the vegetable compartment 10 from the refrigerating compartment inlet 21 through the refrigerating compartment return duct 22 between the refrigerating compartment 2 and the freezing compartment 7. Further, the remaining part of the cool air blown by the blower 17 is adjusted to an appropriate amount of cool air through the low temperature chamber damper thermostat 23, and is sent to the low temperature chamber 13 through the low temperature chamber discharge duct 24 from the low temperature chamber discharge port 25 to obtain a proper temperature. keep. On the other hand, the cold air that has flowed in flows into the refrigerating chamber suction port 21 through the communication port 15 below the low temperature chamber door 14. The vegetable compartment 10 is cooled to an appropriate temperature by the return cold air of the refrigerating compartment 2 and the returning cool air of the low temperature compartment 13 and returns to the lower part of the cooler 16 through the vegetable compartment return duct 28. Due to the above action, the refrigerator compartment 2, the freezer compartment 7,
The vegetable compartment 10 and the low temperature compartment 13 are kept at proper temperatures.

[0006]

However, in the above conventional structure, the return cold air in the refrigerating compartment 2 is cooled by the refrigerating compartment 2 and the freezing compartment 7.
Since it flows through the refrigerating room return duct 22 in the partition wall, the partition wall becomes thick and the inside of the refrigerator becomes narrow. Further refrigerating room 2
There is also a drawback in that the returned cold air is concentrated on the lower part of the refrigerating compartment door 4 and significantly cools the food on the door shelf 5 on the rear surface of the refrigerating compartment door. Further, the returned cold air is a gasket 6 below the refrigerating compartment door 4.
There is also a drawback that the cooling efficiency is lowered because the heat that has entered from the cooling system is recovered and returned to the cooler 16.

The present invention solves the conventional problems and enables to increase the internal volume of the refrigerator without thickening the partition wall, and further to locally cool the portion of the door shelf 5 on the rear surface of the refrigerating compartment door. It is an object of the present invention to provide a refrigerator that can improve and reduce heat recovery from the lower portion of the refrigerator compartment gasket.

[0008]

In order to achieve this object, a refrigerator according to the present invention comprises a refrigerating room which is partitioned and formed by a heat insulating material and which is located above, a freezing room which is located in the center, and a vegetable room which is located below. A refrigerating compartment return duct is formed between the refrigerating compartment and the freezing compartment, a partition wall filled with a heat insulating material is formed, and a low temperature compartment provided at the bottom of the refrigerating compartment, and cooling And a blower that blows cold air that cools each of the chambers, a refrigerating compartment discharge duct that guides a part of the cool air blown by the blower to the refrigerating compartment, and a cool air of the refrigerating compartment discharge duct. Refrigerating chamber discharge port to be discharged to, the refrigerating chamber suction port provided in the deep inside of the refrigerating chamber above the low temperature chamber, and the refrigerating chamber back of the refrigerator for returning the cold air sucked from the refrigerating chamber suction port Has a duct

Further, the refrigerating compartment is provided with a refrigerating compartment discharge port at the uppermost stage thereof, and a refrigerating compartment suction port is provided at each stage other than the uppermost stage of the refrigerating compartment.

[0010]

In the refrigerator of the present invention, the cool air returned from the refrigerating compartment passes through the refrigerating compartment suction port provided at the upper part of the low temperature compartment in the refrigerating compartment and in the deep part of the refrigerating compartment and through the refrigerating compartment return duct at the back of the refrigerator. Since there is no refrigerating room return duct on the partition walls of the refrigerating room and the freezing room, the partition wall does not become thick. In addition, the returned cold air from the refrigerating compartment concentrates at the bottom of the refrigerating compartment door and significantly cools the food on the door shelf on the back side of the refrigerating compartment door or recovers the heat entering from the lower gasket of the refrigerating compartment door to the cooler. There is no problem and the cooling effect does not decrease.

Further, by providing a refrigerating compartment discharge port at the uppermost stage of the refrigerating room and providing a refrigerating chamber suction port at each stage other than the uppermost stage of the refrigerating room, the upper stage having a high temperature distribution is concentrated. The temperature distribution of the entire refrigerating room is improved by the effective cooling, and the returning cold air does not concentrate further, so partial overcooling is eliminated.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A refrigerator according to a first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows the first embodiment of the present invention.
It is a perspective view of the refrigerator of the Example. FIG. 2 is a vertical sectional view of the refrigerator of the embodiment. The same components as those of the conventional example are designated by the same reference numerals and the description thereof will be omitted.

In the figure, 29 is a refrigerator main body. 18
Is a refrigerating compartment damper thermostat provided at the back of the refrigerating compartment 2 as in the conventional example shown in FIGS.
From the refrigerating compartment discharge port 31 at each stage formed by the shelf 3 provided in the refrigerating compartment 2 through the refrigerating compartment discharge duct 30 provided at the back of the refrigerating compartment by adjusting the amount of cool air sent by It flows into the refrigerator compartment 2. 32 is the low temperature chamber 13
Is a suction port of the refrigerating compartment provided at the uppermost part of the back of the refrigerating compartment and communicates with the lower part of the vegetable compartment 10 via the refrigerating compartment return duct 33, and the refrigerating compartment return cold air flows in.

The operation of the refrigerator constructed as above will be described below. A part of the cool air blown by the blower 17 is a refrigerating room damper thermostat 18.
Cooling room discharge duct 3 that is adjusted to an appropriate amount of cold air through
Through 0, it is evenly sent from the refrigerating compartment discharge port 31 into the refrigerating compartment 2 and maintains an appropriate temperature, while the inflowing cold air is refrigerated from the refrigerating compartment suction port 32 provided at the back of the refrigerating compartment and at the upper part of the low temperature compartment to the back of the refrigerator. Vegetable room 10 through room return duct 33
Sent to

According to the above construction, the return cold air of the refrigerating compartment 2 flows through the refrigerating compartment return duct 33 formed at the back of the refrigerator, so that the partition wall has a refrigerating compartment return duct 22 as in the prior art.
Therefore, the partition wall does not become thick and the internal volume of the refrigerator can be expanded. Further, since the return cold air of the refrigerating compartment 2 is not concentrated on the lower part of the refrigerating compartment door 4, the food on the door shelf 5 on the back side of the refrigerating compartment door is not significantly cooled. Cooling device 1 by recovering heat from the inside
Since it does not change to 6, cooling efficiency does not decrease.

Next, a second embodiment of the refrigerator according to the present invention will be described with reference to the drawings. The same components as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.

FIG. 3 is a perspective view of the refrigerator according to the second embodiment of the present invention. FIG. 4 is a vertical sectional view of the refrigerator according to the second embodiment of the present invention.

In the figure, 34 is a refrigerator main body. 18
Is a refrigerating compartment damper thermostat provided on the back of the refrigerating compartment 2 as in the conventional example shown in FIGS. 5 and 6, and controls the amount of cool air sent by the blower 17 to discharge the refrigerating compartment on the back of the refrigerating compartment. Further, it is made to flow into the refrigerating compartment 2 from the refrigerating compartment discharge port 36 at the uppermost stage of the refrigerating compartment through the duct 35. Reference numeral 37 denotes a plurality of refrigerating compartment suction ports at the back of the refrigerating compartments provided in each stage other than the upper stage formed above the low temperature compartment 13 and formed by the shelves 3 in the refrigerating compartment 2 and via the refrigerating compartment return duct 38 to the vegetable compartment 10. It communicates with the bottom.

The operation of the refrigerator configured as described above will be described below. A part of the cool air blown by the blower 17 is a refrigerating room damper thermostat 18.
Cooling room discharge duct 3 that is adjusted to an appropriate amount of cold air through
Refrigerator 2 through the outlet 36 at the top of the refrigerator
It is sent to the upper part of the inside and the refrigerating room is kept at an appropriate temperature. On the other hand, the cold air that has flowed in is in the back of the refrigerating compartment from the refrigerating compartment suction port 37 provided at each stage formed by the shelves 3 in the refrigerating compartment 2 other than the uppermost stage, through the refrigerating compartment return duct 38 at the back of the refrigerator and the vegetable compartment. Sent to 10.

According to the above construction, the temperature distribution in the refrigerating compartment 2 tends to be higher in the upper part of the refrigerating compartment, and the refrigerating compartment discharge port 36 provided in the upper part of the refrigerating compartment causes the refrigerating compartment 2 to concentrate and discharge the temperature. As a result, there will be no temperature unevenness in the entire refrigerator compartment. In addition, a plurality of refrigerating room suction ports 37 are attached to each stage other than the upper stage, so that returning cold air will not be concentrated and too cold.

[0021]

As described above, the refrigerator of the present invention has a refrigerating room defined by heat insulating material and located at the upper side, a freezing room at the center, and a vegetable room located at the lower side,
There is no refrigerating compartment return duct between the refrigerating compartment and the freezing compartment, and a partition wall filled with a heat insulating material is formed, and the refrigerating compartment is cooled by a cooler provided at the bottom of the refrigerating compartment and a cooler. A blower that blows cold air to cool each of the chambers, a refrigerating compartment discharge duct that guides a part of the cool air blown by the blower to the refrigerating compartment, and a refrigerating compartment that discharges the cool air of the refrigerating compartment discharge duct to the refrigerating compartment. A refrigerating room, which is provided with a room discharge port, a refrigerating room suction port provided at an upper part of the low temperature room and in the deep part of the refrigerating room, and a refrigerating room return duct for returning cold air sucked from the refrigerating room suction port The return cold air does not flow in the partition wall between the refrigerating compartment and the freezing compartment but flows through the refrigerating compartment return duct formed at the back of the refrigerator, so that the partition wall does not become thick and the internal volume of the refrigerator can be expanded. Further, since the returned cold air of the refrigerating compartment does not concentrate on the lower part of the refrigerating compartment door, the food on the door shelf on the back side of the refrigerating compartment door is not significantly cooled. Further, the returning cool air does not return to the cooler by collecting the heat entering from the lower gasket of the refrigerating compartment door, so that the cooling efficiency does not decrease. Furthermore, the temperature distribution at each stage of the refrigerating room is improved by providing the refrigerating room discharge port provided at the uppermost stage of the refrigerating room and the refrigerating room suction port provided at each stage other than the uppermost stage to improve the temperature distribution at each stage of the refrigerating room. Eliminates temperature unevenness. In addition, multiple refrigerating room suction ports are attached to each stage other than the upper stage, so that returning cold air will not be concentrated and too cold.

[Brief description of drawings]

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

FIG. 2 is a vertical sectional view of the same.

FIG. 3 is a perspective view of a refrigerator according to a second embodiment of the present invention.

FIG. 4 is a vertical sectional view of the same.

FIG. 5 is a perspective view of a conventional refrigerator.

FIG. 6 is a vertical sectional view of the same.

[Explanation of symbols]

 2 Refrigerator room 3 Shelf 7 Freezer room 10 Vegetable room 13 Low greenhouse 16 Cooler 17 Blower 19, 30, 35 Cold room discharge duct 20, 31, 36 Cold room discharge port 21, 32, 37 Cold room suction port 22, 33, 38 Cold room return duct

Claims (2)

[Claims] 1. A refrigerating room which is partitioned and formed by a heat insulating material and which is located above, a freezing room located in the center, and a vegetable room located below, and a refrigerating room is provided between the refrigerating room and the freezing room. A plurality of shelves that form a partition wall filled with heat insulating material without a chamber return duct and divide the refrigerating chamber into a plurality of stages, a low temperature chamber provided at the bottom of the refrigerating chamber, and a cooling And a blower that blows cold air that cools each of the chambers, a refrigerating compartment discharge duct that guides a part of the cool air blown by the blower to the refrigerating compartment, and a cool air of the refrigerating compartment discharge duct. And a refrigerating room discharge port to discharge to
A refrigerator comprising a refrigerating compartment suction port provided at an upper portion of the low temperature compartment and in a deep part of the refrigerating compartment, and a refrigerating compartment return duct at a back of the refrigerator for returning cold air sucked from the refrigerating compartment suction port. 2. The refrigerator according to claim 1, wherein the refrigerating compartment is provided with a refrigerating compartment discharge port at the uppermost stage, and a refrigerating compartment suction port is provided at each stage other than the uppermost stage of the refrigerating compartment.