JPH0894231A - Refrigerator - Google Patents

Abstract

PURPOSE: To simplify the air passageway in constitution and reduce the pressure loss therein without decreasing the cubic capacity. CONSTITUTION: Ducts 20, 22 which are passed in the same direction between insulating partitions 5, 6 separating the inside of an insulating casing 1 are provided. The air passageway to the cold storage chamber 7 comprises a discharge passageway 12, cold storage chamber 7, return passageway 14, and duct 20. The air passageway to the vegetable chamber 9 comprises a discharge passageway 13, duct 22, discharge passageway, and return passageway 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to a refrigerator formed in the order of a freezer compartment and a vegetable compartment.

[0002]

2. Description of the Related Art The inside of a conventional refrigerator has a freezer,
The refrigerator compartment and the vegetable compartment were arranged in this order, but in recent years, the refrigerator compartment, which is frequently used, has been formed on top, and the freezer compartment and the vegetable compartment are arranged in that order. In a conventional refrigerator, cool air cooled by a cooler is sent to each room by a fan device, and then returned from each room to the cooler through a dedicated return air passage.

A conventional refrigerator will be described below with reference to FIGS. 7 and 8. FIG. 7 is a perspective view showing the inside of a conventional refrigerator in which a refrigerating compartment, a freezing compartment, and a vegetable compartment are arranged from above on a heat insulating box, and FIG. 8 is a sectional view thereof. In FIGS. 7 and 8, reference numeral 1 denotes a heat-insulating box, which is an inner box 3 provided inside the outer box 2 with a space, and a heat-insulating material 4 made of urethane foam filled between the two boxes 2 and 3. The interior is partitioned by a first heat insulation partition wall 5 and a second heat insulation partition wall 6, and a refrigerating compartment 7, a freezing compartment 8 and a vegetable compartment 9 are formed from above. 10
Is a cooler chamber that accommodates a cooler 10a arranged at the back of the freezing chamber 8, 11 is a fan device for blowing cold air cooled by the cooler 10a, 12 is a refrigerating chamber discharge air passage, and 13
Is a vegetable compartment discharge air passage, 14 is a refrigerating compartment return air passage provided in the first heat insulating partition wall 5, 14a is a refrigerating compartment return duct embedded in the heat insulating material 4, and the second heat insulating partition wall 6 It communicates with the return air passage 14b formed in. Reference numeral 15 denotes a vegetable room return duct embedded in the heat insulating material 4, and communicates with the discharge air passage 15a formed in the second heat insulating partition wall 6. Reference numeral 16 is a return air passage from the vegetable compartment 9, 17 is a return air passage for the freezing compartment provided on the second heat insulating partition wall 18, and 18 is a damper device provided on the upper rear portion of the refrigerating compartment 7 for the refrigerating compartment 7 and the vegetables. The temperature of each room is controlled by controlling the supply of cold air to the room 9. The temperature of the freezer compartment 8 is controlled by turning on / off a compressor (not shown).

Cooling of the refrigerator compartment, the freezer compartment, and the vegetable compartment of the refrigerator constructed as described above will be described below.

First, the cool air cooled by the cooler 10a is blown by the fan device 11, and a part of the cool air is directly supplied from the freezer compartment 8 to the freezer compartment return air passage 17 to the cooler compartment 10 of the cooler compartment 10.
Return to a. On the other hand, the cold air to the refrigerating compartment 7 is discharged into the refrigerating compartment 1
Air is blown into the refrigerating compartment 7 through 2 and the return air passage 1 for the refrigerating compartment
4. Return to the cooler room 10 via the refrigerating room return duct 14a and the return air passage 14b. Cool air to the vegetable compartment 9 is supplied from the vegetable compartment discharge air passage 13 to the vegetable compartment return duct 15 and the discharge air passage 15
The air is blown into the vegetable compartment 9 via a and returns to the cooler compartment 10 via the return air passage 16 from the vegetable compartment 9.

[0006]

However, in the refrigerator having the above-described conventional structure, not only the structure of the cool air passage is complicated, but also the cold air circulating air passage circulating through the refrigerating compartment 7 and the vegetable compartment 9 are provided. Since the circulation air passage of the cool air circulating through the air passage becomes long, there are problems that the number of parts increases and that it takes time to assemble each air passage structure, resulting in high cost. Refrigerator room 7
Since the return air passage 14b and the vegetable compartment discharge air passage 13 are complicated and long, the pressure loss is large and the air passage area must be increased. On the other hand, if the air passage area is increased, heat insulation is ensured in order to ensure heat insulation. There is also a problem that it is necessary to make each wall of the box body 1 thick, which leads to a reduction in the amount of food to be stored. Furthermore, since the vegetable compartment discharge air passage 13 from the vegetable compartment return duct 15 is at the right end, cold air is concentrated and discharged, causing uneven temperature in the vegetable compartment 9 and a vegetable storage container (not shown). It had a problem that it was locally cooled.

The present invention solves the conventional problems.
By simplifying the air passage that circulates the cool air and by making the area of the return air passage from the refrigerating compartment and the vegetable compartment compact, it is possible to prevent the walls of the heat insulating box from becoming thicker and to discharge the air to the vegetable compartment. It is an object of the present invention to provide a refrigerator in which the cost can be reduced, the assembling time can be reduced, the food storage space can be increased, and the temperature of the vegetable compartment can be uniformed by providing the refrigerator over almost the entire width.

[0008]

In order to achieve this object, in the refrigerator of the present invention, the inside of the heat insulation box is provided with a first heat insulation partition wall having a return air passage from the refrigerating compartment and a vegetable compartment. The freezer compartment formed between the second heat insulation partition wall having a return air passage and a refrigerating compartment located above it, and a vegetable compartment located below the compartment. First and second ducts that communicate between the two heat insulating partition walls in the same direction, a fan device that circulates cold air cooled by a cooler in each of these chambers, a damper device that controls the supply of cold air, and a damper device. A discharge air passage to the refrigerating compartment and a discharge air passage to the vegetable compartment, which is provided on the back side of the refrigerating compartment, and the cool air duct to the refrigerating compartment is from the discharge air duct to the refrigerating compartment Via the first duct communicating with the return air passage from the refrigerating chamber, As an air passage to be returned to the waste container, the cold air passage to the vegetable compartment is discharged into the room from the second duct communicating with the discharge air passage to the vegetable compartment, through the return air passage from the vegetable compartment, This is an air duct that returns to the cooler.

Further, the first and second ducts may be integrally formed and the inside of the duct may be partitioned by a heat insulating material.

The air duct area ratio of the first and second ducts is preferably 3 (refrigerator compartment side): 1 (vegetable compartment side) or more.

It is also effective to dispose the first duct on the cooler side and the second duct on the outside of the refrigerator.

Further, it is effective to form a return air passage from the first duct to the cooler on the upper side and a discharge air passage from the second duct to the vegetable compartment on the lower side in the second heat insulating partition wall. .

In addition, the discharge air passage from the second duct to the vegetable compartment is preferably formed below the cooler over the entire width direction of the second heat insulating partition wall.

[0014]

In the refrigerator of the present invention configured as described above, the return cool air from the refrigerating compartment is supplied to the cooler through the first duct communicating with the return air passage formed in the first heat insulating partition wall. The cold air circulated back to the vegetable compartment is discharged into the room from the second duct communicating with the discharge air passage and returned to the cooler via another return air passage formed in the second heat insulation partition wall. The air passage structure is simple, the number of parts is small, and the assembly is easy. Further, the air passage structure is simple and the air passage can be made short so that the pressure loss is small, the air passage area is small, and the first and second ducts are formed in the same direction on the back wall side where the cooler chamber is provided. In particular, it is not necessary to increase the wall thickness.

Further, since the first and second ducts are integrally formed and the interior of the duct is partitioned by a heat insulating material,
The duct is easy to install and can be structurally very simple.

Further, since the structure of the air passage is simple and the length of the air passage is short, especially the discharge air passage to the vegetable compartment and the second duct have a small pressure loss, so that the air volume and the air velocity can be secured. To
The air duct area ratio of the first and second ducts can be set to 3 (refrigerator compartment side): 1 (vegetable compartment side) or more.

Further, since the first duct is arranged on the cooler side and the second duct is arranged on the outside of the refrigerator, the return air passage from the refrigerating chamber, the first duct and the second heat insulating partition wall. The return air passage to the cooler provided in the is communicated, and the discharge air passage to the vegetable compartment, the second duct, and the discharge air passage provided in the second heat insulation partition wall are in communication, and a simple air passage Can be configured.

Further, the return air passage from the first duct to the cooler is upward, the discharge air passage from the second duct to the vegetable compartment is downward via the heat insulating material, and the second heat insulating partition wall is provided. Since it is formed, the air passage can be formed without providing a special air passage component other than the second heat insulating partition wall.

In addition, since the discharge air passage from the second duct to the vegetable compartment is provided below the cooler in the entire width direction of the second heat insulating partition wall, cold air is dispersed, and It is possible to prevent temperature unevenness and local cooling of the vegetable storage container.

[0020]

Embodiments of the refrigerator according to the present invention will be described below with reference to FIGS. The same components as those described as the conventional example are designated by the same reference numerals, and detailed description thereof will be omitted.

FIG. 1 is a perspective view showing the inside of the refrigerator excluding the door, FIG. 2 is a front view showing the air passage portion, and FIG. 3 is an AA line in FIG.
2 is a sectional view taken along the line BB, and FIG. 4 is a sectional view taken along the line BB in FIG.
FIG. 5 is a cross-sectional view taken along the line CC of FIG. 2, and FIG. 6 is an enlarged view of a main part of the duct.

In FIG. 1 to FIG. 5, reference numeral 1 is a heat-insulating box body of the refrigerator body, which is an inner box 3 provided inside the outer box 2 with a space therebetween.
And a heat insulating material 4 made of urethane foam filled between the boxes 2 and 3. The inside of the heat insulating box 1 is divided into a refrigerating compartment 7, a freezing compartment 8 and a vegetable compartment 9 from above by a first heat insulating partition wall 5 and a second heat insulating partition wall 6. As shown in FIGS. 3 and 5, a recess is formed in the back of the freezer compartment 8 and is separated by a partition plate 24 to form a cooler compartment 10. 10b is a defrost heater. The fan device 11 has a function of circulating the cool air cooled by the cooler 10a in each chamber.

Reference numeral 25 denotes a discharge hole from the cooler chamber 10 to the refrigerating chamber 7 side, and a damper device 18 is arranged immediately above the discharge hole. Reference numeral 26 is a cover made of a heat insulator, and 30 is a heat insulator integrally covering the refrigerating compartment discharge air passage 12 and the vegetable compartment discharge air passage 13 provided on the back surface of the refrigerating compartment 7 communicating with the damper device 18. A cover, 12a is a blow-out hole to the refrigerating compartment 7, 14a is a suction hole provided in the refrigerating compartment return air passage 14 provided in the first heat insulating partition wall 5, 27 is the first heat insulating partition wall 5 and the second heat insulating partition wall 5. With a duct arranged between the heat insulation partition wall 6,
The first duct 20 and the second duct 22 are formed in the same direction. Reference numeral 21 denotes a return air passage to the cooler chamber 10 that communicates with the first duct 20, and 28 denotes a discharge air passage to the vegetable chamber 9 that communicates with the second duct 22 and has a discharge hole 28a.

The partition plate 24 in the freezer compartment 8 has a cold air discharge hole 29, and the second heat insulating partition wall 6 has a return air passage 1 for the freezer compartment 8.
7 and its suction hole 17a are provided. Further, the second heat insulating partition wall 6 is provided with a return air passage 16 from the vegetable compartment 9 and a suction hole 16a thereof.

The circulation of the cool air in the air passage configured as described above will be described below. A part of the cool air blown by the fan device 11 is a cool air discharge hole 29 to the freezer compartment 8.
Directly to the freezer compartment 8 through the suction holes 17a as shown in FIGS. 1 and 3 and returned to the cooler compartment 10 through the return air passage 17 of the freezer compartment 8. Further, the remaining cool air is divided from the discharge hole 25 toward the refrigerating compartment 7 side through the damper device 18 into the refrigerating compartment discharge air passage 12 and the vegetable compartment discharge air passage 13. First, the cold air to the refrigerating compartment 7 is sent into the refrigerating compartment 7 through the refrigerating compartment discharge air passage 12 and the blowout holes 12a.
From the suction hole 14a of the refrigerator compartment 7 to the return air passage 14 for the refrigerator compartment
Is guided to the first duct 20, which communicates with the first duct 20, and the return air passage 21 to the cooler 10a, and returns into the cooler chamber 10. On the other hand, the cold air to the vegetable compartment 9 is discharged into the vegetable compartment 13
After the cool air is guided to the discharge air passage 28 from the second duct 22 that communicates with and is sent from the discharge hole 28a into the vegetable compartment 9,
Return air passage 16 for the vegetable compartment from the suction hole 16a of the vegetable compartment 9
Is returned to the inside of the cooler chamber 10. In this case, the return cold air from the refrigerating compartment 7 and the return cool air from the vegetable compartment 9 have almost the same temperature distribution, and therefore even if they are independently returned to the cooler compartment 10, the frost formation of the cooler 10a is not biased. . Moreover, when the compressor is operated for a predetermined time, the defrost heater 10b located below the cooler 10a is energized to perform defrosting,
The air passage is configured so that frost does not remain on the cooler 10a and the cooling performance is not impaired. Therefore, the structure of the air passage that does not affect the cooling performance is simple, the number of parts can be reduced, and the assembly is easy. Further, since the air passage can be made shorter than the conventional one, the pressure loss is small and the air passage area can be small.

Therefore, the first and second ducts 20, 22
Can be formed in the same direction on the back wall side which is set thick to form the cooler chamber 10, and there is no fear that the inner volume of the heat insulating box 1 is narrowed.

The first duct 20 and the second duct 22 are
As shown in FIG. 6, a piece a31 made of a plastic material
It is composed of a piece b32 and a heat insulating material 33, and has a heater 34 on the outer peripheral portion. Piece a31 and piece b32 are
The entire lengths of both ends thereof are press-fitted to each other and fixed by a proper number of claws (not shown), and the heat insulating material 33 is fixed to the piece b32 with an adhesive or the like, and then the rib 31a of the piece a31 is used as a contact. Since it is assembled and the inside is divided to form the integral duct 27, the first heat insulating partition wall 5 and the second heat insulating partition wall 6 need only be attached once, and the installation is extremely easy, and the structure is simple. The cost can be reduced.

The structure of the air duct is simple and the length of the air duct is short. Especially, the second duct 22 connecting to the vegetable chamber discharge air duct 13 to the vegetable chamber 9 has a small pressure loss in the air duct. The air duct area ratio of the first duct 20 and the second duct 22 is preferably 3 (refrigerator compartment side): 1 (vegetable compartment side) or more so that the air volume can be secured. Can be downsized.

Refrigerating room return air passage 14 and first duct 20
And the return air passage 21 to the cooler chamber 10, and the discharge air passage 13 for the vegetable compartment, the second duct 22 and the discharge air passage 28 to the vegetable compartment 9, and the first duct 20 to the cooler. On the 10a side,
By disposing the second duct 22 outside the refrigerator, the pressure loss is small, and a simple and easy air passage structure can be obtained.

Cooler 10a communicating with the first duct 20
To the cooler chamber 10 provided in the second heat insulating partition wall 6 and the discharge air passage 28 to the vegetable chamber 9 provided in the second heat insulating partition wall 6 communicating with the second duct 22. When the return air passage 21 is provided on the upper side and the discharge air passage 28 is provided on the lower side, the air passage can be formed without providing a special air passage component other than the second heat insulating partition wall 6, so that the cost can be reduced. Can be achieved.

Vegetable room 9 communicated from the second duct 22
The discharge air passage 28 to the inside is formed over the entire width direction of the second heat insulating partition wall 6 below the cooler 10a, and if an appropriate number of discharge holes 28a to the room are provided, cold air is dispersed and the vegetable compartment 9
It is possible to prevent uneven temperature inside and to prevent local cooling of the vegetable storage container (not shown).

[0032]

According to the present invention constructed as described above, the following effects can be obtained.

Freezing formed inside the heat insulating box between a first heat insulating partition wall having a return air passage from the refrigerator compartment and a second heat insulating partition wall having a return air passage from the vegetable compartment. Room and
A refrigerating room located above it, a vegetable room located below it, first and second ducts that connect the first and second adiabatic partition walls in the same direction, and these rooms are cooled. For this purpose, a fan device that circulates the cool air cooled by the cooler, a damper device that controls the supply of the cool air, a discharge air passage to the refrigerating compartment provided above the damper device in the inner surface of the refrigerating compartment, and vegetables. The cool air in the refrigerating compartment is discharged from the refrigerating compartment to the cooler via the first duct communicating with the return air duct from the refrigerating compartment. Returning, the cold air to the vegetable compartment is discharged into the room from the second duct communicating with the discharge air passage to the vegetable compartment, and is returned to the cooler via the return air passage from the vegetable compartment. Since it is configured, the air passage structure is simple, the number of parts is small, and the assembly is easy. Also, since the air duct structure is simple and the air duct can be shortened, the pressure loss is small and the air duct area can be small, so the first and second ducts can be installed in the same direction on the back wall side where the cooler chamber is provided. It can be formed, and there is no fear that the inner volume of the heat insulating box is narrowed.

Further, if the first and second ducts are integrally formed and the interior is divided by a heat insulating material, the installation between the heat insulating partition walls is only required once, and the installation is extremely easy, and the structure is Easy and low cost.

Further, if the air duct area ratio of the first and second ducts is formed to be 3 (refrigerator compartment side): 1 (vegetable compartment side) or more, the size of the duct can be reduced.

Further, by disposing the first duct on the cooler side and the second duct on the outer side of the refrigerator, the pressure loss in each air passage is small and a simple and simple air passage structure can be realized.

Further, when the return air passage from the first duct to the cooler is located at the upper side and the discharge air passage from the second duct to the vegetable compartment is located at the lower position, the second heat insulating partition wall is formed. Since the air passage can be formed without providing a special air passage component on the second heat insulating partition wall, the cost can be reduced.

In addition, when the discharge air passage from the second duct to the vegetable compartment is formed below the cooler and over the entire width direction of the second heat insulating partition wall, the temperature unevenness of the vegetable compartment and the vegetable container can be prevented. Local cooling can be prevented. In the present invention, even if the vegetable compartment is a refrigerating compartment temperature zone, for example, a refrigerating compartment, or a chilled compartment at 0 ° C to 2 ° C, the present effect can be exhibited only by adjusting the amount of cold air.

[Brief description of drawings]

FIG. 1 is a perspective view showing the inside of a refrigerator according to an embodiment of the present invention, excluding a door of the refrigerator.

FIG. 2 is a front view showing an air passage part of the refrigerator.

FIG. 3 is a sectional view taken along line AA of FIG.

FIG. 4 is a sectional view taken along line BB in FIG.

5 is a cross-sectional view taken along the line CC of FIG.

FIG. 6 is an enlarged view of a main part of the duct of the refrigerator.

FIG. 7 is a perspective view showing the interior of the conventional refrigerator with the door removed.

FIG. 8 is a sectional view of the main part of the refrigerator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insulation box body 5 1st insulation partition wall 6 2nd insulation partition wall 7 Refrigerating room 8 Freezing room 9 Vegetable room 10a Cooler 11 Fan device 12 Refrigerating room discharge air path 13 Vegetable room discharge air path 14 Cold room Return air passage 16 Return air passage for vegetable room 18 Damper device 20, 22 Duct 21 Return air passage 28 Discharge air passage 33 Heat insulating material

Claims (6)

[Claims] 1. An inside of the heat insulating box is formed between a first heat insulating partition wall having a return air passage from the refrigerating compartment and a second heat insulating partition wall having a return air passage from the vegetable compartment. First and second ducts, which are divided into a freezing room, a refrigerating room above the freezing room, and a vegetable room below the freezing room, and the first and second heat insulating partition walls communicate with each other in the same direction. And a fan device for circulating cold air cooled by a cooler in each of these chambers, a damper device for controlling the supply of cold air, and a discharge air passage to the refrigerating chamber provided above the damper device to the deep inside of the refrigerating chamber. A discharge air passage to the vegetable compartment, the cool air passage of the refrigerating compartment passes through the interior of the discharge air passage to the refrigerating compartment, and through the first duct communicating with the return air passage from the refrigerating compartment. Then, as an air passage to be returned to the cooler, a cold air passage to the vegetable compartment is
A refrigerator in which the air is discharged from the second duct that communicates with the discharge air passage to the vegetable compartment, and is returned to the cooler in the future via the return air passage from the vegetable compartment. 2. The refrigerator according to claim 1, wherein the first and second ducts are integrally formed and the interior is partitioned by a heat insulating material. 3. The refrigerator according to claim 1, wherein the air duct area ratio of the first and second ducts is 3 (refrigerator compartment side): 1 (vegetable compartment side) or more. 4. The refrigerator according to claim 1, wherein the first duct is provided on the cooler side and the second duct is provided on the outside of the refrigerator. 5. The second heat insulating partition wall is formed by arranging a return air passage from the first duct to the cooler upward and a discharge air passage from the second duct to the vegetable compartment downward. Refrigerator according to 1. 6. The refrigerator according to claim 5, wherein the discharge air passage from the second duct to the vegetable compartment is located below the cooler and formed over the entire width direction of the second heat insulating partition wall.