JP2020101351A - refrigerator - Google Patents

Abstract

To solve problems that a freezing chamber return air channel is formed on a heat insulation partition wall, a number of components increases, and costs for the whole refrigerator is hard to be reduced.SOLUTION: In a refrigerator 10, a freezing chamber return air channel 30 is configured by using a heat insulation partition wall 19 arranged on a rear side of a freezing chamber 15, partition walls 21 and 25, and a cooling air forced plate 51 arranged at a lower end 21A of the partition wall 21. By this configuration, the freezing chamber return air channel 30 is not a tunnel shape penetrating the heat insulation partition wall 19, can reduce a number of components, and can reduce costs for the whole refrigerator. The cooling air forced plate 51 is reinforced by a rib 53, thereby suppressing generation of noise by the cooling air forced plate 51.SELECTED DRAWING: Figure 1

Description

The present invention relates to a refrigerator that cools and stores foods and the like in a storage chamber, and particularly relates to a refrigerator that reduces the cost of the entire refrigerator by changing the freezer compartment return air passage from inside the heat insulating partition wall to inside the refrigerator.

A structure shown in FIG. 7 is known as a conventional refrigerator-freezer 100. FIG. 7 is a sectional view illustrating a conventional refrigerator-freezer 100.

As shown in FIG. 7, in the refrigerator-freezer 100, a freezing compartment 101 is arranged on the upper stage and a refrigerating compartment 102 is arranged on the lower stage. The freezing compartment 101 and the refrigerating compartment 102 are vertically partitioned by a heat insulating partition wall 103. A cooling chamber 104 is arranged behind the freezing chamber 101, and a cooler 105 and a blower 106 are arranged in the cooling chamber 104.

The heat insulating compartment wall 103 is provided with a freezer compartment return air passage 107 for returning the cool air that has cooled the freezer compartment 101 to the cooling chamber 104 and a refrigerating compartment return air passage 108 for returning the cool air that has cooled the refrigerating compartment 102 to the cooling chamber 104. It is set up.

With this structure, the cool air cooled by the cooler 105 of the cooling chamber 104 is blown to the freezing chamber 101 and the refrigerating chamber 102 by the blower 106. Then, the cold air that has cooled the freezing compartment 101 and the refrigerating compartment 102 to the set temperature returns to the cooling compartment 104 via the freezing compartment return air passage 107 and the refrigerating compartment return air passage 108 (for example, refer to Patent Document 1). ..

Japanese Patent No. 36555950

In the refrigerator-freezer 100, a freezer compartment return air passage 107 and a refrigerating compartment return air passage 108 are formed so as to penetrate through the heat insulating partition wall 103. Then, the cool air that has cooled the freezing chamber 101 returns to the side of the defrosting heater 109 arranged below the cooler 105 and the region below it, and is sucked into the cooling chamber 104 from below the cooler 105.

The refrigerator-freezer 100 has a problem that it is difficult to reduce the manufacturing cost because the work of forming the freezer compartment return air passage 107 on the heat insulating partition wall 103 is required. Further, since the freezer compartment return air passage 107 is formed in the heat insulation partition wall 103, it is necessary to attach an aluminum sheet, an aluminum tape, or the like to the freezer compartment return air passage 107, which increases the number of parts, and There is a problem that it is difficult to reduce the overall cost.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a refrigerator that reduces the cost of the entire refrigerator by changing the freezer compartment return air passage from inside the heat insulating partition wall to inside the refrigerator.

The refrigerator of the present invention is provided with a refrigerating chamber and a freezing chamber formed by partitioning the inside of the heat insulating box with a heat insulating partition wall, and a cooler for cooling the cold air supplied to the refrigerating chamber and the freezing chamber. A cooling chamber in which a blower that blows the cool air toward the refrigerating chamber and the freezing chamber is disposed above the cooler, and a partition wall that partitions a front surface in the depth direction of the cooling chamber. And a freezing compartment return air passage for returning the cool air from the freezing compartment to the cooling compartment, wherein the space width in the depth direction of the cooling compartment is larger than that of the blower in the arrangement area of the cooler. The installation area is formed wider, and the freezer compartment return air passage is arranged outside the heat insulating partition wall on the freezer compartment side.

Further, in the refrigerator of the present invention, the lower end of the partition wall is located above the outer peripheral surface of the heat insulating partition wall on the freezer compartment side, and at least the partition wall in the area where the cooler is disposed, It is characterized in that a protruding portion protruding toward the freezer compartment is formed.

Further, in the refrigerator of the present invention, at the lower end of the partition wall, a cold air forced plate that guides the cold air in the freezer return air passage to a space below the cooler is disposed, and the cold air forced plate is It is characterized in that it is inclined toward the cooling chamber side with respect to the partition wall.

Further, the refrigerator of the present invention is characterized in that the cold air forced plate is provided with ribs.

The refrigerator of the present invention includes a refrigerating chamber and a freezing chamber inside an insulating box, a cooler for cooling the cold air circulating in the refrigerator, and a cooling chamber provided with a blower for blowing the cool air into the refrigerator, and a cooling chamber. A partition wall that divides the front surface in the depth direction of the chamber and a freezing chamber return air passage that returns cold air from the freezing chamber to the cooling chamber are provided. Further, the space width in the depth direction of the cooling chamber is wider in the cooler installation area than in the blower installation area. The freezer compartment return air passage is formed outside the heat insulating partition wall on the freezer compartment side. With this structure, in the refrigerator, the freezer return air passage is provided outside the heat insulating partition wall, so that the cost of the entire refrigerator can be reduced. Further, in the cooling chamber, the amount of cold air sucked into the cooler becomes stable, and the cooling efficiency is prevented from deteriorating.

Further, in the refrigerator of the present invention, the lower end of the partition wall is located above the outer peripheral surface of the heat insulating partition wall on the freezer compartment side, and at least in the partition wall in the area where the cooler is disposed, toward the freezer compartment side. A protruding portion that protrudes is formed. With this structure, the protrusion is formed on the partition wall, so that the amount of cold air sucked into the cooler in the cooling chamber is stabilized without increasing the number of parts.

Further, in the refrigerator of the present invention, a cold air forcing plate that guides the cool air in the freezer compartment return air passage to the space below the cooler is arranged at the lower end of the partition wall. The cold air forced plate is inclined toward the cooling chamber side with respect to the partition wall. With this structure, in the freezer compartment return air passage, the cold air blown from the freezer compartment collides with the cold air compulsion plate, and the force of the cool air is reduced. Then, the cold air is forcibly guided to the lower side of the defrosting heater in the cooling chamber by the cold air forcing plate, so that the amount of suction of the cool air into the cooler in the cooling chamber becomes stable.

Further, in the refrigerator of the present invention, the cold air forced plate is provided with ribs. With this structure, in the freezer return air passage, the cold air blown from the freezer collides with the cold air forced plate, but the durability of the cold air forced plate is increased, and the generation of noise due to the cold air forced plate is prevented. It

It is a figure which shows the refrigerator which concerns on embodiment of this invention, (A) is the perspective view which looked at the refrigerator from the front, (B) is a side sectional drawing of a refrigerator. It is a front view explaining the air duct of the cold air which circulates in the refrigerator concerning the embodiment of the present invention. It is an (A) perspective view and a (B) sectional view explaining the structure of the partition wall of the refrigerator concerning the embodiment of the present invention. It is sectional drawing explaining the air path of the cool air from the freezer compartment of a refrigerator which concerns on embodiment of this invention to a cooling compartment. It is a (A) perspective view and a sectional view (B) explaining a partition wall of a refrigerator concerning other embodiments of the present invention. It is sectional drawing explaining the air path of the cool air from the freezer compartment of a refrigerator which concerns on other embodiment of this invention to a cooling compartment. It is sectional drawing explaining the conventional refrigerator-freezer.

Hereinafter, a refrigerator 10 according to an embodiment of the present invention will be described in detail with reference to the drawings. In the description of the present embodiment, the same reference numerals are used for the same members in principle, and repeated description will be omitted. In the following description, the up-down direction indicates the height direction of the refrigerator 10, the left-right direction indicates the width direction of the refrigerator 10, and the front-back direction indicates the depth direction of the refrigerator 10. The left-right direction indicates the left-right direction when the refrigerator 10 is viewed from the front.

FIG. 1A is a perspective view illustrating a schematic structure of a refrigerator 10 according to an embodiment of the present invention. FIG. 1(B) is a side sectional view for explaining the schematic structure of the refrigerator 10 according to the embodiment of the present invention. FIG. 2 is a front view illustrating an air passage for cold air circulating in the refrigerator 10 according to the embodiment of the present invention. The direction in which cold air circulates is shown by an arrow.

As shown in FIG. 1A, the refrigerator 10 includes a heat insulating box 11 as a main body, and a storage chamber for storing food and the like is formed inside the heat insulating box 11. As the storage chambers, a freezing chamber 15 (see FIG. 1B) and a refrigerating chamber 16 (see FIG. 1B) are formed from the top.

The front surface of each storage chamber of the heat insulating box 11 is open, and a heat insulating door 17 and a heat insulating door 18 are provided in the opening so as to be opened and closed. The heat insulating door 17 is a door whose upper and lower ends at the right end when viewed from the front are rotatably supported by the heat insulating box 11 and which closes the opening of the freezer compartment 15 from the front so as to be openable and closable. Similarly, the adiabatic door 18 is a door whose upper and lower ends at the right end when viewed from the front are rotatably supported by the adiabatic box 11, and which closes the opening of the refrigerating chamber 16 from the front in an openable and closable manner.

As shown in FIG. 1(B), a heat insulating box body 11 which is the main body of the refrigerator 10 is provided with an outer box 12 made of a steel plate having an opening on the front side, and a space is provided inside the outer box 12, and And an inner box 13 made of synthetic resin having an opening. A heat insulating material 14 made of foamed polyurethane is filled and foamed in the gap between the outer box 12 and the inner box 13. The heat insulating door 17 and the heat insulating door 18 that close the freezing chamber 15 and the refrigerating chamber 16 also have the same heat insulating structure as the heat insulating box 11.

A cooling chamber 20 is formed behind the freezing chamber 15. Inside the cooling chamber 20, a cooler 22 which is an evaporator for cooling the air circulating in the refrigerator 10 is arranged. The cooler 22 is connected to a compressor 23, a radiator (not shown), and a capillary tube (not shown) via a refrigerant pipe (not shown), and constitutes a vapor compression refrigeration cycle circuit.

Between the freezing chamber 15 and the cooling chamber 20, a blower chamber 26 partitioned by partition walls 21 and 25 made of synthetic resin is formed. The partition wall 21 partitions the cooling chamber 20 and the blower chamber 26, and the partition wall 25 partitions the freezing chamber 15 and the blower chamber 26. A blower port 27 through which the cool air supplied to the blower chamber 26 passes is formed in the upper portion of the partition wall 21, and the cool air supplied to the freezing chamber 15 and the refrigerating chamber 16 is once blown to the blower chamber 26. It

A blower 24 is provided above the cooler 22 in the cooling chamber 20 and near the blower port 27. The blower 24 is, for example, an axial flow blower. By operating the blower 24, the cool air cooled by the cooler 22 circulates in the freezer compartment 15 and the refrigerating compartment 16. Then, the freezing compartment 15 is cooled to the freezing temperature zone, and the refrigerating compartment 16 is cooled to the refrigeration temperature zone. A suction port 28 is formed in the lower part of the partition wall 21 for sucking the cool air returned from the freezing chamber 15 and the refrigerating chamber 16 into the cooling chamber 20.

As shown in the figure, an outlet 29 for blowing cold air to the freezing compartment 15 is formed in the upper portion of the partition wall 25, and cold air in the freezing compartment 15 is returned to the freezing compartment return air passage 30 in the lower portion of the partition wall 25. A return port 31 for blowing air to is formed. The freezer compartment return air passage 30 is formed along the outer peripheral surface of the heat insulating partition wall 19 on the freezer compartment 15 side, and communicates with the cooling room 20 via the suction port 28. A defrost heater 32, which is energized during the defrosting operation and removes the frost formed on the cooler 22, is disposed below the cooler 22 in the cooling chamber 20.

Further, the heat insulating partition wall 19 partitions the freezing compartment 15 and the refrigerating compartment 16 in the height direction inside the compartment. A refrigerating compartment return air passage 33 that connects the refrigerating compartment 16 and the cooling compartment 20 is formed inside the heat insulating partition wall 19. Then, the cool air blown to the refrigerating compartment 16 returns to the cooling compartment 20 via the refrigerating compartment return air passage 33. The heat insulating partition wall 19 also has a heat insulating structure like the heat insulating box 11 described above.

As shown in FIG. 2, the region surrounded by the alternate long and short dash line 41 is the freezing chamber 15, and the region surrounded by the alternate long and short dash line 42 is the refrigerating chamber 16. The area indicated by the dotted line 43 indicates the blower chamber 26 and the refrigerating compartment blow air passage 47 through which the cool air from the cooling chamber 20 (see FIG. 1B) is blown.

As illustrated, the cool air cooled by the cooler 22 (see FIG. 1B) in the cooling chamber 20 is blown to the blower chamber 26 by the operation of the blower 24 (see FIG. 1B). .. A part of the cool air blown to the blower chamber 26 is blown to the freezing chamber 15 via the air outlet 29 of the partition wall 25. Then, the cold air that has circulated in the freezer compartment 15 is blown to the freezer compartment return air passage 30 (see FIG. 1B) via the return port 31 of the partition wall 25.

On the other hand, a part of the cool air blown to the blower chamber 26 is blown to the refrigerating chamber blower air passage 47 via the circulation port 46. Then, the cool air is blown into the refrigerating compartment 16 from the outlet 45 provided in the partition wall 44 of the refrigerating compartment 16. After that, the cold air circulated in the refrigerating compartment 16 passes through the refrigerating compartment return air passage 33 (see FIG. 1(B)) formed inside the heat insulating partition wall 19 (see FIG. 1(B)), and then the cooling compartment 20. Return to.

At this time, a part of the cool air rises along the wall portion in the blower chamber 26, and is blown from the circulation port 46 provided at the upper portion of the blower chamber 26 to the refrigerating chamber air blowing path 47 and the refrigerating chamber 16. .. With this structure, the amount of cold air blown to the refrigerating compartment 16 is adjusted, and the refrigerating compartment 16 is prevented from being excessively cooled.

FIG. 3A is a perspective view illustrating a schematic structure of the partition wall 21 of the refrigerator 10 according to the embodiment of the present invention. FIG. 3B is a cross-sectional view illustrating the schematic structure of the partition wall 21 of the refrigerator 10 according to the embodiment of the present invention, and is a cross-section taken along the line AA shown in FIG. FIG. 4 is a cross-sectional view illustrating the flow of cold air from the freezer compartment 15 to the cooling compartment 20 of the refrigerator 10 according to the embodiment of the present invention.

As shown in FIG. 3(A), the partition wall 21 is a plate-shaped body that partitions the front side of the cooling chamber 20, a blower port 27 is formed in the central region of the upper part thereof, and cold air is forced at the lower end part thereof. A plate 51 is arranged. The cold air forced plate 51 forcibly guides the cold air flowing in the freezer compartment return air passage 30 (see FIG. 1B) below the defrost heater 32 (see FIG. 1B).

Here, the cold air that has circulated in the freezer compartment 15 (see FIG. 1B) has a short circulation path, and because it is in a dry state, its specific gravity is light, and a certain amount of air is maintained even in the freezer compartment return air passage 30. ing. Then, the cold air forced plate 51 and the partition wall 21 in the vicinity thereof collide with the cold air to weaken the momentum of the cool air and forcibly guide the cold air to the lower side of the defrost heater 32 (see FIG. 1B). Therefore, some strength is required.

Therefore, in the present embodiment, a reinforcing rib 53 is formed at the center of the cold air forced plate 51. With this structure, the cold air forced plate 51 has an improved durability and can endure the collision with the cold air, and at the same time, the cold air forced plate 51 can be prevented from vibrating and generating noise. The ribs 53 may be provided also at both ends of the cold air forced plate 51 in the lateral width direction.

As shown in FIG. 3(B), the partition wall 21 is provided at its lower portion with a projecting portion 52, a part of which projects toward the freezer compartment 15 (see FIG. 1(B)). The protruding portion 52 of the partition wall 21 is formed corresponding to the region where the cooler 22 (see FIG. 1B) is provided, and the protruding width W1 is, for example, 2 mm. That is, the lower side of the partition wall 21 has a larger cross-sectional area than the upper side of the partition wall 21 in which the blower 24 (see FIG. 1(B)) is arranged, and the amount of cool air flowing is large. As shown in FIG. 3(A), the protruding portion 52 of the partition wall 21 is formed in a rectangular parallelepiped shape in accordance with the region where the cooler 22 is arranged, and is continuously formed to the lower end 21A of the partition wall 21. There is.

Further, as illustrated, the cold air forced plate 51 is formed so as to be inclined toward the cooling chamber 20 (see FIG. 1B) side with respect to the partition wall 21. Specifically, the lower end 51</b>A of the cold air forced plate 51 is located on the inner side of the cooling chamber 20 with respect to the partition wall 21. With this structure, the cold air forced plate 51 can reliably guide the cool air flowing through the freezer compartment return air passage 30 to below the defrost heater 32 (see FIG. 1B).

As shown in FIG. 4, as shown by an arrow 61, the cool air blown into the freezer compartment 15 circulates inside the compartment and is blown from the return port 31 of the partition wall 25 to the freezer compartment return air passage 30. Then, as indicated by an arrow 62, the cold air collides with the cold air forcing plate 51 and the partition wall 21, and is sucked into the cooling chamber 20 through the suction port 28 while weakening the momentum.

In the present embodiment, in order to reduce the manufacturing cost and the number of parts, the freezer compartment return air passage 30 is formed not outside the heat insulating partition wall 19 but outside the heat insulating partition wall 19. That is, the freezer compartment return air passage 30 is configured by the outer peripheral surface of the heat insulating partition wall 19, the partition walls 21 and 25, and the cold air forced plate 51.

As described above with reference to FIGS. 3A and 3B, the protrusion 52 of the partition wall 21 is formed corresponding to the region where the cooler 22 is disposed. In the cooling chamber 20, the cross-sectional area of the cooling chamber 20 is larger on the lower side where the cooler 22 is arranged than on the upper side where the blower 24 (see FIG. 1B) is arranged. , The amount of cold air flowing increases.

Further, the cold air forced plate 51 is formed wider than the protruding portion 52 of the partition wall 21 in the lateral width direction of the cooling chamber 20. Then, in the area where the cooler 22 is disposed, the cool air that has returned to the cooling chamber 20 is weakened in its momentum, similarly to the structure in which the conventional return air passage is formed in the heat insulating partition wall 19 in a tunnel shape. It is sucked from the lower side of the cooler 22.

With the above structure, the cooling air sucked into the cooling chamber 20 does not stay in the freezing chamber return air passage 30, and the amount of suction into the area where the cooler 22 is provided is stable, so that the cooling efficiency deteriorates. Is prevented.

In the present embodiment, the cold air forced plate 51 and the rib 53 are formed integrally with the partition wall 21, but the present invention is not limited to this case, and even when they are fixed to the partition wall 21 as separate bodies. good.

Next, a refrigerator 70 according to another embodiment of the present invention will be described in detail with reference to the drawings. The refrigerator 70 is different from the refrigerator 10 described with reference to FIGS. 1 to 4 mainly in the structures of the partition wall 71 and the freezer compartment return air passage 72. Therefore, in the following description of the refrigerator 70, the same reference numerals are used for the same constituent members as those of the refrigerator 10, and repeated description is omitted, and the structures of the partition wall 71 and the freezer compartment return air passage 72 are omitted. I will explain mainly. In the description of the refrigerator 70, the description of FIGS. 1 to 4 will be appropriately referred to.

FIG. 5A is a perspective view illustrating a schematic structure of the partition wall 71 of the refrigerator 70 according to the embodiment of the present invention. FIG. 5B is a cross-sectional view for explaining the schematic structure of the partition wall 71 of the refrigerator 70 according to the embodiment of the present invention, and is a cross-section taken along line BB shown in FIG. 5A. FIG. 6 is a cross-sectional view illustrating the flow of cold air from the freezing compartment 15 to the cooling compartment 20 of the refrigerator 70 according to the embodiment of the present invention.

As shown in FIG. 5(A), the partition wall 71 is a plate-like body that partitions the front side of the cooling chamber 20 (see FIG. 6), and a blower port 27 is formed in the upper central region thereof. The lower end 71A of the partition wall 71 is arranged up to substantially the same position as the lower end of the cooler 22 (see FIG. 6). The cold air forced plate 51 (see FIG. 3A) of the refrigerator 10 is not arranged at the lower end 71A of the partition wall 71.

Further, at the lower part of the partition wall 71, a projecting portion 73 is formed, a part of which projects toward the freezer compartment 15 (see FIG. 6). The protruding portion 73 of the partition wall 71 is formed so as to correspond to the region where the cooler 22 is disposed. The projecting portion 73 of the partition wall 71 is formed in a rectangular parallelepiped shape in accordance with the area where the cooler 22 is disposed, and is continuously formed to the lower end 71A of the partition wall 71.

Here, the cold air that has circulated in the freezer compartment 15 (see FIG. 6) has a short circulation path, and its specific gravity is light due to the dry state, and a certain amount of air is maintained even in the freezer compartment return air passage 72 (see FIG. 6). doing. As described above, the partition wall 71 is not provided with the cold air forced plate 51 (see FIG. 3A), and noise caused by the flow of cold air is not generated. Therefore, the structure of the partition wall 71 is preferable to the structure of the partition wall 21 (see FIG. 3A) of the refrigerator 10 from the viewpoint of noise.

As shown in FIG. 5B, the projecting width W2 of the projecting portion 73 of the partition wall 71 is, for example, 5 mm, which is more than that of the projecting portion 52 of the partition wall 21 of the refrigerator 10 (see FIG. 3B). , Projects toward the freezer compartment 15 side. Further, as shown in FIG. 5(A), the projecting portion 73 of the partition wall 71 is formed in a rectangular parallelepiped shape in accordance with the region where the cooler 22 is disposed, and is continuously formed up to the lower end 71A of the partition wall 71. There is. In the cooling chamber 20, the cross-sectional area of the cooling chamber 20 is larger on the lower side where the cooler 22 is arranged than on the upper side where the blower 24 (see FIG. 1B) is arranged. , The amount of cold air flowing increases.

As shown in FIG. 6, the freezer compartment return air passage 72 communicates with the freezer compartment 15 via the return port 31 of the partition wall 25, and communicates with the cooling chamber 20 via the suction port 74 of the partition wall 71. Then, as indicated by an arrow 81, the cool air blown to the freezer compartment 15 circulates inside the compartment and is blown from the return port 31 of the partition wall 25 to the freezer compartment return air passage 72. Then, as indicated by an arrow 82, the cool air is sucked into the periphery of the defrost heater 32 below the cooler 22 of the cooling chamber 20.

As described above, the lower end 71A of the partition wall 71 is arranged up to substantially the same position as the lower end of the cooler 22, and the cold air forced plate 51 (see FIG. 3(A)) is attached to the lower end 71A of the partition wall 71. Not provided. Therefore, the cold air flowing through the freezer compartment return air passage 72 flows into the cooling chamber 20 through the suction port 74 while maintaining the wind speed and the air pressure in the freezer compartment return air passage 72. That is, in the structure of the freezer compartment return air passage 72 of the refrigerator 70, the air volume of the cool air sucked into the cooling chamber 20 is larger than that in the structure of the freezer compartment return air passage 30 of the refrigerator 10.

Therefore, in the present embodiment, a protruding portion 73 having a wider width in the depth direction is formed in the lower portion of the partition wall 71, and in particular, the cross-sectional area of the cooling chamber 20 in the region where the cooler 22 is disposed is widened to allow the flowing cool air. The amount of wind is increasing. The protruding portion 73 is formed up to the vicinity of the upper end of the cooler 22. With this structure, in the cooling chamber 20, the air volume of the cool air flowing through the arrangement area of the cooler 22 is larger than the air volume of the cool air flowing through the arrangement area of the blower 24 (see FIG. 1B). Then, the cool air vigorously flows into the cooling chamber 20 from the freezer return air passage 72, but as shown by an arrow 83, the amount of suction into the cooler 22 is stabilized and the cooling efficiency is prevented from being deteriorated. It Further, as shown by an arrow 84, cold air is also prevented from staying in the freezer compartment return air passage 72.

In this embodiment, the protrusions 52 and 73 formed on the partition walls 21 and 71 are formed up to the vicinity of the upper end of the cooler 22 to stabilize the amount of cold air sucked into the cooling chamber 22 and cool the cooling chamber 22. Although the structure for preventing deterioration of efficiency has been described, the structure is not limited to this structure. For example, the protruding portions 52 and 73 may be formed below the vicinity of the blower 24 and above the cooler 22. In this case, the amount of cold air drawn into the cooling chamber 22 can be further stabilized. In addition, various modifications can be made without departing from the scope of the present invention.

10,70 Refrigerator 11 Insulation box body 15 Freezing room 16 Refrigerating room 19 Insulation partition wall 20 Cooling room 21,25,71 Partition wall 21A, 71A Lower end 22 Cooler 24 Blower 26 Blower chamber 27 Blower port 28,74 Suction port 29 Blow Outlet 30,72 Freezer compartment return air duct 31 Return port 32 Defrost heater 33 Refrigerator compartment return air duct 51 Cold air forced plate 52,73 Projection portion 53 Rib

Claims (4)

A refrigerating room and a freezing room formed by partitioning the inside of the heat insulating box with a heat insulating partition wall,
A cooler for cooling the cold air supplied to the refrigerating compartment and the freezing compartment is arranged, and a blower for blowing the cool air toward the refrigerating compartment and the freezing compartment is arranged above the cooler. A cooling room to be installed,
A partition wall that partitions the front surface in the depth direction of the cooling chamber,
A freezing compartment return air passage for returning the cold air from the freezing compartment to the cooling compartment,
The space width in the depth direction of the cooling chamber is formed wider in the area where the cooler is arranged than in the area where the blower is arranged.
The freezer compartment return air passage is arranged outside the heat insulating partition wall on the freezer compartment side. The lower end of the partition wall is located above the outer peripheral surface of the heat insulating partition wall on the freezer compartment side,
The refrigerator according to claim 1, wherein at least the partition wall in the disposition region of the cooler is formed with a protrusion that protrudes toward the freezer compartment. At the lower end of the partition wall, a cold air forced plate that guides the cold air in the freezer compartment return air passage to the space below the cooler is disposed,
The refrigerator according to claim 2, wherein the cold air forced plate is inclined toward the cooling chamber side with respect to the partition wall. The refrigerator according to claim 3, wherein the cold air forced plate is provided with ribs.

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