JP2965757B2 - Freezer refrigerator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in the structure of a cool air supply duct of a refrigerator in a refrigerator.

[0002]

2. Description of the Related Art In recent years, refrigerators of the type in which a refrigerating compartment is provided at an easily accessible height from the viewpoint of frequency of use are becoming mainstream.

FIGS. 5 and 6 show the structure of such a conventional refrigerator-freezer. There are three constant temperature rooms,
The upper row is the refrigerator compartment 22, the middle row is the freezer compartment 23, and the lower row is the vegetable compartment 2
It is 4. The cool air cooled by the evaporator 25 is sucked up by the rotation of the cool air circulation fan motor 26, and the pressure is increased to be introduced into the pressure chamber 27. The cool air introduced into the pressure chamber 27 is distributed to the freezer compartment and the refrigerating compartment, and the cool air supplied to the freezer compartment is circulated in the freezer compartment 23 and then circulated through the cool air return duct 30 to the evaporator 25. Come back to the bottom.

On the other hand, the cold air supplied from the pressure chamber 27 to the refrigerator compartment side passes through a refrigerator control damper 29 at the rear of the refrigerator compartment 22 and is introduced into a cool air supply duct 28. The introduced cool air rises in the cool air supply duct 28, and a plurality of blowout holes 28 a formed on a surface facing inward with the refrigerator compartment 22.
From the refrigerator compartment 22. After circulating in the refrigerator compartment 22, the cool air is introduced into the vegetable compartment 24 via a cool air return duct 31, and circulates in the vegetable compartment 24 and then returns to the cool air duct 32.
And returns to the lower part of the evaporator 25 via.

[0005] The cool air returning to the lower portion of the evaporator 25 is repeatedly cooled and circulated in the refrigerator to maintain each constant temperature chamber at a predetermined temperature.

[0006]

However, when a refrigerator is used, frost is formed on the evaporator and the passage resistance in the evaporator increases, or the power supply voltage applied to the fan motor for circulating cool air decreases. Sometimes. In such a case, the supply of the cool air is sufficient but the pressure of the cool air is insufficient, so that the cool air may not be able to rise to the upper part of the refrigerator compartment. At that time, in the conventional refrigerator-freezer, since the cool air supplied to the cool air supply duct of the cool room is sequentially supplied to the cool room from the lower blow-out hole, the cool air in the lower portion of the cool room and the cool air in the upper portion are too low. There was a drawback that the temperature distribution in the room deteriorated.

An object of the present invention is to provide a refrigerator-freezer in which the temperature distribution in the refrigerator compartment is always stable.

[0008]

SUMMARY OF THE INVENTION A refrigerator according to the present invention has two or more constant temperature rooms such as a refrigerator room and a freezer room, has a cool air supply device at the rear of the freezer room, and has a refrigerator room at the uppermost stage. in refrigerators, the cool air of the cool air supply duct cold air rose the forward rising of the refrigerating compartment is divided into a return path for inverting lowered, characterized in that a hole balloon for supplying cold air to the refrigerating chamber condensate path .

[0009]

The cool air supplied from the cool air supply device including the evaporator, the cool air circulation fan motor and the pressure chamber is distributed to the refrigerator compartment and the freezer compartment. The cool air introduced into the cool air supply duct of the refrigerating room rises once on the outward path where no blow hole is provided, and is supplied into the refrigerating room from the blow hole formed when descending on the return path. For this reason, even if the pressure of the cool air supply device decreases, the lower portion of the cool room does not have too much cool air and the upper portion does not have too much cool air, and the temperature distribution in the cool room is stable. Also cold
Since the air supply duct is formed by dividing,
Or even integrated on the refrigerator wall (urethane foaming agent, etc.)
Is easy to manufacture and cool
The rear surface of the storage room can be flattened, making it less convenient to use.
do not do. Divide the duct surface into two planes for the outbound and return trips
Refrigerator and freezer compartments
It is easy to design any outbound and inbound routes according to the conditions.
it can. In addition, by arranging return routes on the left and right of the outbound route,
The number of outlets can be increased, and evenly in the refrigerator
Cold air can be supplied.

[0010]

1 and 2 show the structure of a refrigerator-freezer according to an embodiment of the present invention. There are three constant temperature rooms, the upper stage is a refrigerator room 2, the middle stage is a freezing room 3, and the lower stage is a vegetable room 4
It has become. A cool air supply device including an evaporator 5, a cool air circulation fan motor 6 and a pressure chamber 7 is provided at the rear of the freezing room 2. A cool air supply duct 8 is provided at the rear of the refrigerator compartment 2.
It is provided on the refrigerator wall . A cold room control damper 9 is provided below the cool air supply duct 8 to adjust the amount of cool air introduced into the cool air supply duct 8. The cool air supply duct 8 has a forward path 8b in which the introduced cool air rises and a return path 8c in which the risen cool air reverses and descends,
The return path 8c is provided with a plurality of blowout holes 8a on the surface facing the refrigerator compartment 2 inward. Outgoing route 8b and return route 8c are duct surfaces
Are divided in a plane. This blowing hole 8a
Then, the cool air descending in the cool air supply duct 8 is supplied into the refrigerator compartment 2. Cooling air return ducts 10, 11, and 12 are provided at the bottom of the freezer compartment, at the side of the freezer compartment, and at the ceiling of the vegetable compartment, respectively.

The cool air cooled by the evaporator 5 is sucked up by the rotation of the fan motor 6 for circulating cool air, and the pressure is increased to be introduced into the pressure chamber 7. The cool air introduced into the pressure chamber 7 is distributed between the freezer compartment and the refrigerator compartment due to a difference in circuit resistance between the freezer compartment cool air circuit and the refrigerator compartment side cool air circuit.

The cool air supplied from the pressure chamber 7 to the freezing room side circulates in the freezing room 3 and returns to the lower part of the evaporator 5 via the cool air return duct 10.

On the other hand, the cold air supplied from the pressure chamber 7 to the refrigerator compartment side is supplied to a refrigerator control damper 9 at the rear of the refrigerator compartment 2.
Through the cooling air supply duct 8. The cool air introduced into the cool air supply duct 8 rises in the outward path 8b, rises to the top of the refrigerator compartment 2 and descends in the return path 8c. At this time, the cool air is blown out through the outlet hole 8a provided in the middle of the return path 8c.
Is supplied to each shelf in the refrigerator compartment 2. After circulating in the refrigerator compartment 2, the cool air is introduced into the vegetable compartment 4 through the cool air return duct 11.

The cool air introduced into the vegetable compartment 4 circulates in the vegetable compartment 4 and returns to the lower part of the evaporator 5 via the cool air return duct 12.

The cool air returning to the lower part of the evaporator 5 is repeatedly cooled and circulated in the refrigerator to maintain each constant temperature chamber at a predetermined temperature.

At this time, the temperature of the freezer compartment 3 to which the cool air introduced into the pressure chamber 7 is directly supplied is the lowest, and the temperature of the vegetable compartment 4 to which the cool air after circulation in the refrigerator compartment 2 is supplied is smaller than that of the refrigerator compartment 2. The minute temperature rises.

The cool air supply duct 8 has a structure in which the outward path 8b is provided on both sides as shown in FIG. 3 and a return path 8c provided with a blowout hole 8a is provided in the center, or as shown in FIG. The structure provided one by one may be sufficient.

[0018]

According to the present invention, the cool air introduced into the cool air supply duct of the cold room is supplied to the cold room through the outlet holes when going up the outward route and descending the backward route. Even if the temperature is not sufficient, a stable temperature distribution can be obtained without excessive cooling in the lower part of the refrigerator compartment and insufficient cooling in the upper part. In addition, the cool air supply duct is
Because it is formed by dividing, or even a refrigerator wall
Surface (urethane foam, etc.)
Manufacturing is simple, and the rear surface of the refrigerator compartment is
Rats can do it, so don't hurt usability. Outbound and return
Is achieved by dividing the duct surface into planes.
, So it is optional depending on the arrangement of the refrigerator compartment and freezer compartment.
It is possible to easily carry out outbound and return trip designs. Also, outbound
The number of outlets is increased by arranging return routes to the left and right of
It is possible to supply cold air evenly in the refrigerator compartment.
You.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a refrigerator-freezer according to an embodiment of the present invention.

FIG. 2 is a diagram showing a structure of a cool air supply duct according to an embodiment of the present invention.

FIG. 3 is a diagram showing a structure of a cool air supply duct according to another embodiment of the present invention.

FIG. 4 is a diagram showing a structure of a cool air supply duct according to another embodiment of the present invention.

FIG. 5 is a diagram showing a configuration of a conventional refrigerator-freezer.

FIG. 6 is a view showing a structure of a conventional cool air supply duct.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Freezer refrigerator main body 2 Refrigerator room 3 Freezer room 4 Vegetable room 8 Cold air supply duct 8a Blow-off hole 8b Outbound route 8c Return route

Claims (4)

(57) [Claims] 1. A refrigerator having two or more constant temperature chambers such as a refrigerator compartment and a freezer compartment, a cold air supply device provided at a rear portion of the freezer compartment, and a cold air supply duct of the refrigerator compartment provided at the top of the refrigerator compartment. is divided into a return path cold air cool air rises the forward rising is reversed downward, left and right forward this return path which is arranged in the central portion
Refrigerator, characterized in that it was placed in. 2. The return route arranged on the left and right sides respectively
The refrigerator according to claim 1, wherein a plurality of blowout holes are provided in a vertical direction . 3. The cold air supply duct is integrated on the refrigerator wall.
The refrigerator-freezer according to claim 1 or 2 , wherein the refrigerator is formed in a refrigerator. 4. The cooling air supply duct according to claim 4, wherein the forward path and the return path are routed in a cool air supply duct.
2. The method according to claim 1, which is formed by dividing in a plane.
Item 7. The refrigerator according to Item 3 .