JPH10253244A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remarkably improve a heat insulating performance between both storing chambers by constructing a heat insulated partition wall in a refrigerator in which an inner side of each of the heat insulated boxes is defined by the heat insulated partition wall into a first storing chamber and a second storing chamber having a higher temperature than that of the first storing chamber. SOLUTION: A refrigerator 1 is constructed by a heat insulating box 6 filled with foamed polyurethane heat insulating material 4 between an outer box 2 and an inner box 3, an inner side of the heat insulating box 6 is defined by a partition plate 7 into an upper section and a lower section, wherein the upper area over the partition plate 7 is applied as a refrigerator camber 8. In addition, the lower area bellow the partition plate 7 is divided by a heat insulated partition wall 9 having a substantial L-shaped section into an upper part and a lower part, a space between the heat insulated partition wall 9 and the partition plate 7 is defined as a vegetable camber 17 and a space below the heat insulated partition wall 9 is defined as a freezing chamber 18. In this case, the heat insulated partition wall 9 is constructed by an upper case, a lower case and a vacuum heat insulating material held by these both cases. With such an arrangement as above, a heat insulating performance between both cambers 17, 18 is remarkably improved, and a reduction in temperature in the vegetable chamber 17 under the influence of temperature of the freezing chamber 18 is prevented or suppressed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator comprising a heat insulating box filled with a heat insulating material between an outer box and an inner box, wherein the heat insulating box is divided into a plurality of storage rooms by heat insulating partition walls. .

[0002]

2. Description of the Related Art Refrigerators of this type have conventionally been constructed of an insulated box in which an insulating material such as foamed polyurethane is filled between a steel sheet outer box and a hard resin inner box by an in-situ foaming method. By partitioning the inside of the insulation box (inside the storage)
A freezing room cooled to a freezing temperature such as -20 ° C or + 5 ° C
It has a refrigeration room that maintains the refrigeration temperature, etc., and a vegetable room for storing foods that do not want to be dried, such as vegetables.

[0003] In particular, in recent years, refrigerators and vegetable compartments in which food is frequently delivered are arranged in order from the top, and a refrigerator for long-term storage is a refrigerator arranged at the bottom of the refrigerator below the vegetable compartment. Is being developed.

In recent years, it has become necessary to reduce the wall thickness of the heat-insulating box in order to reduce the installation space of the refrigerator or to prevent the expansion of the refrigerator while expanding the effective volume in the refrigerator. For example, JP-B-61-17263 (B32B5 / 18) and JP-B-63-35911 (F25D23 / 06), or JP-B-2-544.
No. 79 (F16L59 / 06) has come to use a vacuum heat insulating material.

[0005] This vacuum heat insulating material is provided in a bag formed by welding the periphery of a film (gas barrier film) having a multilayer laminate structure for preventing gas (such as air) from permeating, into a fine powder of silica, pearlite, etc., and a glass. After inserting a heat insulating material made of fiber or open-cell foamed polyurethane, the gas in the bag is evacuated and sealed in a vacuum state.

According to such a vacuum heat insulating material, 0.005 to
Since a thermal conductivity of 0.010 Kcal / mh ° C. is achieved, especially when the heat insulating box is disposed on the inner surface of the outer box around the freezing room where a low temperature is required, even if the wall thickness of the heat insulating box is reduced, the heat insulating box is kept from the outer box It can be expected that the heat entering the freezer compartment can be effectively reduced.

[0007]

By the way, the heat insulating partition walls for partitioning the respective chambers are conventionally formed of a molded heat insulating material such as styrene foam. Therefore, particularly in the case of the structure in which the freezing room and the vegetable room are adjacent to each other as described above, the temperature of the vegetable room becomes significantly lower due to the temperature effect from the freezing room having the lowest temperature.

For this reason, an electric heater or the like is conventionally mounted on the side of the insulated partition wall on the side of the vegetable compartment, and the electric heater is energized especially in a season when the outside air temperature is low to compensate for the temperature in the vegetable compartment. Although measures have been taken to increase the thickness of the device itself, power consumption has been increased, or the effective volume in the refrigerator has been reduced by the heat insulating partition walls.

The present invention has been made to solve the above-mentioned conventional technical problem, and when the inside of the heat-insulating box is divided into a plurality of storage rooms by heat-insulating partition walls, the heat insulation between the rooms is improved. It is to provide an improved refrigerator.

[0010]

A refrigerator according to the present invention comprises a heat insulating box filled with a heat insulating material between an outer box and an inner box, and the first heat insulating box is divided by a heat insulating partition wall. And a second storage room having a higher temperature than the first storage room, wherein the heat insulating partition wall is formed of a vacuum heat insulating material.

According to the present invention, the first storage room and the second storage room having a higher temperature than the first storage room are formed by partitioning the inside of the heat insulating box by the heat insulating partition wall. In the refrigerator, since the heat insulating partition wall is made of the vacuum heat insulating material, the heat insulating performance between the two storage rooms is remarkably improved, and the temperature drop of the second storage room due to the temperature influence from the first storage room is prevented or suppressed. It becomes possible.

As a result, the electric heater provided on the heat-insulating partition wall as in the prior art can be removed or its capacity can be reduced, so that the number of parts can be reduced and the assembly work can be simplified by simplifying the structure. Improvement and reduction in production cost and power consumption can be achieved. Further, since the thickness of the heat insulating partition wall itself can be reduced, the effective volume in the refrigerator can be increased.

[0013] In addition to the above, the refrigerator according to the second aspect of the present invention is provided with a cooling room for installing a cooler and a blower, which is formed behind the two storage rooms, and the heat insulating partition wall connects the two storage rooms. At the same time as partitioning, the second storage room and the cooling room are also partitioned.

According to the second aspect of the present invention, in addition to the above, the heat insulating partition wall partitions the two storage chambers and is formed over the back of the two storage chambers to install the cooler and the blower. And the second storage room is also partitioned, so that when the cooling room where the temperature is reduced most is formed over the back of the second storage room, the influence of the temperature from the cooling room , The temperature of the second storage chamber can be effectively prevented or suppressed. In particular, since a total of three chambers are partitioned by the same heat insulating partition wall, the number of parts can be further reduced.

[0015]

Next, an embodiment of the present invention will be described in detail with reference to the drawings. 1 is a front view of the refrigerator 1 of the present invention, FIG. 2 is a front view of the refrigerator 1 without a door, FIG. 3 is a longitudinal side view of the refrigerator 1, FIG. 4 is a rear view of the refrigerator 1, and FIG. FIG. 6 is a sectional view taken along line AA of FIG. 5, FIG. 7 is a sectional view taken along line BB of FIG. 6, FIG. 8 is a sectional view taken along line CC of FIG. 6, and FIG. FIG.

The refrigerator 1 of the present invention comprises an outer box 2 made of a steel plate opening forward and an insulating box 6 formed by filling a foamed polyurethane insulating material 4 between inner boxes 3 made of a hard resin by an in-situ foaming method. The interior of the heat-insulating box 6 is vertically partitioned by a partition plate 7 provided at a substantially central portion,
The upper part of the partition plate 7 is a refrigerating room 8 (storage room) maintained at a refrigerating temperature (about + 5 ° C.).

The lower portion of the partition plate 7 is divided into upper and lower portions by a heat insulating partition wall 9 having a substantially L-shaped cross section as a whole. A vegetable compartment 17 (second storage compartment) for storage is provided, and a freezer compartment 18 (first storage compartment) below the heat insulating partition wall 9 is cooled to a freezing temperature (about −20 ° C.).

The refrigerator 21 has a plurality of upper and lower shelves 21.
・ The ice temperature (0 ° C to -3
(° C.) is formed. Also,
The front opening of the refrigerator compartment 8 is closed by a pivotable door 23 so as to be openable and closable.

Further, the refrigerator compartment duct 2 is provided at the back of the refrigerator compartment 8.
4 are formed vertically, and on the left and right sides thereof, a plurality of refrigerator air outlets 26 communicating with the upper end of the refrigerator compartment 24 and the refrigerator 8 are formed vertically. Further, an ice greenhouse cold air discharge port 25 is formed inside the ice greenhouse 22, and a cold storage room cool air return port 27 is formed at the back and bottom (partition plate 7).

A vegetable compartment cool air discharge port 31 communicating with the refrigerator compartment cool air return port 27 is formed in the upper rear portion of the vegetable compartment 17, and a vegetable compartment cool air return port 32 is formed in the upper right upper portion. . The front opening of the vegetable compartment 17 is openably and closably closed by a drawer-type door 33, and the door 33
A vegetable container 34 having an opening on the upper surface is attached to the back surface of the container, and the vegetable container 34 is disposed in the vegetable compartment 17 to store vegetables.

A cooling chamber 37 is defined at the back of the freezing chamber 18 by a partition plate 36. The cooling chamber 37 is arranged from the back of the freezing chamber 18 to the back of the vegetable compartment 17 (behind the heat insulating partition wall 9). ). In the cooling chamber 37, a cooler 38 that constitutes a cooling device is provided vertically behind the freezing chamber 18, and a blower 39 is provided in the cooling chamber 37 above the cooler 38. is set up. Reference numeral 41 denotes a defrost heater of the cooler 38.

The front opening of the freezer compartment 18 is openably closed by two drawer-type doors 42, 43 which are vertically open and closed. Attached, this container 44,
Reference numerals 46 are arranged above and below the freezer compartment 18 to store frozen food, ice cream, and the like.

The partition plate 36, the cooler 38 and the blower 3
A cooling air distribution duct 47 is formed between the cylinders 9, and freezing room cold air discharge ports 48, 49 communicating with the duct 47 and the freezing room 18 are formed in the partition plate 36 at the upper back of the containers 44, 46. Open correspondingly. In addition, a freezer compartment cool air return port 51 communicating with a lower portion of the cooling compartment 37 is formed behind the container 46.

At the upper part of the duct 47, a cool air distribution port 52 is formed on the side of the blower 39.
2 communicates with the lower end of the refrigerator compartment duct 24. In addition, beside the cooler 38, a cold air return duct 53 is provided in the refrigerator compartment / vegetable compartment.
The upper end of which is formed in the vegetable compartment cool air return port 3
The lower end thereof communicates with the inside of the cooling chamber 37 through a cold air return port 54 for opening the refrigerator compartment / vegetable compartment opened at the lower part of the cooling compartment 37. In FIG. 2, the heat insulating partition wall 9 and the partition plate 36 are removed.

On the other hand, the bottom wall 6A of the heat-insulating box 6 is formed such that the rear portion rises in a step-like manner, and a machine room 56 is formed outside the rear portion of the bottom wall 6A. This machine room 56
Inside, a compressor 57, an evaporating dish condenser 58, and a main condenser 59 constituting a cooling device are installed. In addition, since the bottom wall 6A has such a shape, the bottom of the freezing compartment 18 also has a shape in which the rear rises, so that the rear surface of the lower container 46 is located forward of the rear surface of the upper container 44. Becomes The cooler 38 is located above the raised bottom wall 6A.

On the other hand, a high-temperature refrigerant pipe 61 is alternately attached (attached) to the inner surface of the outer box 2 in a heat-exchange manner, and a high-temperature refrigerant pipe 62 is also provided on the inner surface of the outer box 2 located at the periphery of the opening of the heat insulating box 6. Have been. The discharge side of the compressor 57 is connected to the evaporating dish condenser 58, and the outlet of the evaporating dish condenser 58 is connected to the main condenser 59. The outlet of the main condenser 59 is connected to the high-temperature refrigerant pipe 61,
Is connected to a high-temperature refrigerant pipe 62 around the opening. The high-temperature refrigerant pipe 62 is connected to the cooler 38 via a capillary tube 63 (not shown), and the outlet of the cooler 38 is connected to the suction side of the compressor 57.

With the above configuration, when the compressor 57 is operated,
A high-temperature and high-pressure gas refrigerant is discharged from the compressor 57, flows into the evaporating dish condenser 58 and the main condenser 59 in order, releases heat, and is condensed. The refrigerant flowing out of the main condenser 59 flows into the high-temperature refrigerant pipe 61 to further radiate heat, and then flows into the high-temperature refrigerant pipe 62 to heat the periphery of the opening. Thereby, dew condensation on the periphery of the opening is eliminated.

The refrigerant flowing out of the high-temperature refrigerant pipe 62 is decompressed by the capillary tube, enters the cooler 38, and evaporates. At this time, heat is taken from the surroundings, and the air in the cooling chamber 37 is cooled. At this time, the temperature in the cooling chamber 37 is -3.
It drops to the lowest value, such as 0 ° C to -35 ° C. The refrigerant exiting the cooler 38 is sucked into the compressor 57 again.

As described above, the cool air cooled by the cooler 38 is sucked by the operation of the upper blower 39 and is blown out to the front distribution duct 47. The cool air blown out to the distribution duct 47 flows from the cool room discharge ports 48 and 49 to the freezer room 18.
Is discharged into each of the containers 44 and 46 and cooled to a freezing temperature of about −20 ° C. The cool air in the freezer compartment 18 returns from the freezer cool air return port 51 into the cooling compartment 37 on the suction side of the cooler 38.

The cool air blown out to the distribution duct 47 also flows into the refrigerator compartment duct 24 from the cool air distribution port 52 and rises there. It is discharged into the refrigeration room 8 and the ice temperature room 22. A not-shown damper that opens and closes at the temperature in the refrigerator compartment 8 is provided in the refrigerator compartment duct 24, whereby the refrigerator compartment 8 is maintained at a refrigerator temperature of about + 5 ° C. Is maintained at an ice temperature of about 0 ° C. to −3 ° C.

The cool air circulated in each of the chambers 8 and 22 flows into the cold room return port 27, enters the vegetable room 17 from the vegetable room cool air discharge port 31 and the like, and keeps the inside of the vegetable room container 34 cool from the surroundings. Then, the cool air circulated in the vegetable room 17 flows into the cool room / vegetable room cool air return duct 53 from the vegetable room cool air return port 32, flows down there, and returns to the cool room / vegetable room cool air return port 54.
It returns to the cooling chamber 37 on the suction side of the cooler 38.

On the other hand, the heat insulating partition wall 9 is shown in FIGS.
As shown in FIG. 2, the upper case 81 and the lower case 82 are each formed of a hard synthetic resin plate having a substantially L-shaped cross section, and a vacuum heat insulating material 83 having a substantially L-shaped cross section sandwiched between the two cases 81 and 82. ing. In this case, a flange 81F projecting rearward is formed at a rear upper end of the upper case 81, and a flange 82F standing up is formed continuously on both sides of the lower case 82 and the lower front edge. The periphery of the side surface of the vacuum heat insulating material 83 is surrounded by the flanges 81F and 82F.

On the other hand, the vacuum heat insulating material 83 is formed by folding a gas barrier film in which a heat-welding layer made of, for example, polyethylene or polypropylene and an aluminum layer and a surface protective layer are laminated from the inside, and two sides are brought into close contact with each other so that the heat-welding layers are mutually bonded. A bag is formed by welding, and in that state, a fine powder such as silica or pearlite, and a core material made of glass fiber or open-cell foamed polyurethane insulation are inserted. Is produced by evacuating the gas to a vacuum state, and then welding and sealing the heat-welding layers on the other side to each other, as a whole having a substantially L-shaped cross section as described above. .

Although the electric heater 84 is attached to the upper surface of the vacuum heat insulating material 83, it may be omitted. The electric heater 84 is a heater for temperature compensation of the vegetable compartment 17 and is energized as necessary at a low outside air temperature. Then, as shown by arrows in FIG. 11 or FIG. 12, the vacuum heat insulating material 83 is sandwiched from above and below by the two cases 81 and 82 and connected by the flanges 81F and 82F to complete the heat insulating partition wall 9.

When the heat insulating partition wall 9 is mounted in the inner box 3 as described above, its horizontal wall 9A is
And the freezing compartment 18 below the compartment, and the vertical wall 9B defines the vegetable compartment 17 and the cooling compartment 37 behind the compartment.

As described above, according to the present invention, since the heat insulating partition wall 9 for partitioning the vegetable room 17 and the freezing room 18 is constituted by the vacuum heat insulating material 83, the heat insulating performance between the two rooms 17 and 18 is remarkably improved. Vegetable room 1 due to temperature influence from freezing room 18
7 can be prevented or suppressed.

Thus, the electric heater 84 can be removed or its capacity can be reduced.
Therefore, it is possible to improve the assembly workability by reducing the number of parts and simplifying the structure, and to reduce the production cost and the power consumption. Further, since the thickness dimension of the heat insulating partition wall 9 itself can be reduced, the effective volume in the refrigerator can be increased.

In particular, since the heat insulating partition wall 9 partitions the vegetable compartment 17 and the freezing compartment 18 at the same time, it also partitions the cooling compartment 37 and the vegetable compartment 17 formed behind the both compartments. As described above, it is possible to effectively prevent or suppress the temperature drop of the vegetable compartment 17 due to the influence of the temperature from the cooling chamber 37 where the temperature drops most. In particular, since a total of three chambers are partitioned by the same heat insulating partition wall 9, the number of parts can be further reduced.

On the other hand, vacuum heat insulating materials 71, 71 are adhered to the inner surfaces of the side plates 2A, 2A of the outer box 2 corresponding to both sides of the freezing room 18, and the bottom plate of the outer box 2 corresponding to the lower part of the freezing room 18. A vacuum heat insulating material 72 is also attached to the inner surface of 2B,
It is embedded in the heat insulating material 4. A vacuum heat insulating material 73 is also attached to the inner surface of the back plate 2 </ b> C of the outer box 2 corresponding to the back of the cooling room 37 behind the freezing room 18, and is embedded in the heat insulating material 4.

Each of the vacuum heat insulating materials 71, 72, and 73 is formed by folding a gas barrier film in which a heat-welding layer made of, for example, polyethylene or polypropylene, an aluminum layer, and a surface protective layer are laminated from the inside in the same manner as described above. The heat welding layers are welded to each other to form a bag, and in that state silica, fine powder such as pearlite,
And, after inserting a glass fiber or a core material made of open-cell foamed polyurethane heat insulating material, evacuating the gas inside the bag in a predetermined evacuation device to make a vacuum state, and then performing the heat welding on the remaining one side Manufactured by fusing the layers together and sealing.

Of these, the upper portions of the vacuum heat insulating materials 71, 71 located on both sides of the freezing compartment 18 are provided with the vegetable compartment 1 as shown in FIG.
7, the lower end edge 71A of the vacuum heat insulating material 71, 71 has an inclined shape in which the rear portion gradually rises at a predetermined angle from the front portion. Thereby, the lower end edge 71A of the vacuum heat insulating material 71 has a shape similar to the shape of the bottom wall 6A, and the vacuum heat insulating materials 71, 71 cover substantially the entire area from the front part to the rear part of the bottom of the freezing chamber 18 avoiding the machine room 56. Will come to cover.

Thus, regardless of the shape of the bottom wall 6A of the heat insulating box 6 formed by the machine room 56, the vacuum heat insulating materials 71, 71 are provided.
Is attached to the bottom of the heat insulation box 6 with a large area, and the heat insulation effect can be improved. In particular, the vacuum heat insulating materials 71 and 7 are provided almost all over the side of the freezing room 18 where heat insulation is most desired.
1 can be provided, so that the wall thickness of the heat insulating box 6 is reduced to further reduce the installation space of the refrigerator 1, or to increase the effective volume, or to further increase the power consumption of the cooling device. Can be reduced.

Further, since the vacuum heat insulating material 71 itself has such a shape, the core material constituting the vacuum heat insulating material 71 has a tapered shape, so that the work of inserting into the gas barrier film becomes easy, and the vacuum heat insulating material 71 itself Also improves the assembly workability.

Further, the vacuum heat insulating material 72 located below the freezing compartment 18 is formed in a step shape along the shape of the bottom wall 6A.

On the other hand, the vacuum heat insulating material 73 located behind the freezing compartment 18 has a rectangular shape as a whole. As shown in FIG. 6, the core material has a size larger than the rear projection area of the region including the cooler 38 and the blower 39.

Here, the core material does not exist at the peripheral portion of the vacuum heat insulating material, and only the gas barrier film is used. Therefore, heat transfer at the peripheral portion of the vacuum heat insulating material increases, and the heat insulating performance deteriorates. (This is called a heat bridge.)

On the other hand, in the present invention, as described above, the core material of the vacuum heat insulating material 73 has a size larger than the rear projection area of the area including the cooler 38 and the blower 39. -3 without receiving
It becomes possible to effectively insulate the back of the cooler 38 having the lowest temperature such as 0 ° C. to −35 ° C., and it is possible to further improve the cooling capacity and the like.

In particular, the wall thickness of the heat insulating box 6 is reduced as shown in FIGS. 3 and 5 due to the installation of a motor and the like on the back of the blower 39, but the vacuum heat insulating material 73 must be provided as described above. As a result, it is possible to prevent the insulation performance of the blower 39 from lowering.

On the other hand, as shown in FIG. 9, the high-temperature refrigerant pipe 61 is provided on the left side plate 2A of the vacuum heat insulating material 71 on the left side.
The inner surface rises upward from below, bends forward in a crank shape, and then turns upward to extend rightward on the inner surface of the top plate 2D. Then, after turning downward, it is bent rearward in the shape of a crank, and descends on the inner surface of the side plate 2A behind the right vacuum insulating material 71.

The high-temperature refrigerant pipe 61 further rises from the inner surface of the back plate 2C on the side of the vacuum heat insulating material 73, bends in a meandering manner on the inner surface of the back plate 2C located above the vacuum heat insulating material 73, and then re-evacuates. The heat insulating material 73 has a shape that descends to the side.

As described above, since the high-temperature refrigerant pipe 61 is attached to the inner surface of the back plate 2C above the vacuum heat insulating material 73 attached behind the lower cooler 38 as shown in FIGS. Regardless of the presence of 71 or 73, the high-temperature refrigerant pipe 61
, The cooling capacity can be maintained by securing the heat radiation capacity (pipe length).

Next, the procedure for assembling the heat insulating box 6 of the refrigerator 1 as described above will be described. First, the vacuum heat insulators 71, 71, 72, 73 are respectively attached to the respective positions on the inner surface of the outer box 2, and the high-temperature refrigerant pipes 61, 62 are also attached to the inner surface of the outer box 2 at this time. At this time, the back plate 2 of the outer box 2
Urethane injection ports 75, 75 are formed on the left and right sides of the central portion of the C, and the high-temperature refrigerant pipe 61 is attached so as to avoid this.

After assembling the inner box 3 into the outer box 2, it is set in a predetermined foaming jig with the opening facing downward.
Next, a polyurethane undiluted solution is injected from the urethane injection ports 75, 75, and is filled between the two boxes 2, 3.
At this time, the thickness of the vacuum heat insulating materials 71, 71 is 15 m.
m, the thickness of the vacuum heat insulating material 73 is 20 mm, and the heat insulating thickness of the freezer compartment 18 (FIG. 8) of the heat insulating box 6 is 45 mm on the side wall and 40 mm to 50 mm on the back wall.

On the other hand, the refrigerator compartment 8 of the heat insulating box 6 (FIG. 7)
The insulation thickness of the side wall is 33mm, the back wall is 30mm ~ 4mm
Since the thickness is set to 0 mm, the thickness of the heat insulating material 4 minus the thickness of the vacuum heat insulating materials 71 and 73 is substantially the same or similar between the freezing compartment 18 and the refrigerating compartment 8. Therefore, the undiluted polyurethane solution that grows by reaction is also in both boxes 2,
The heat insulating material 4 turns substantially uniformly between the three, and the heat insulating material 4 is almost uniformly filled in each part of the heat insulating box 6.

In the embodiment, the freezing compartment 18 and the vegetable compartment 17 are partitioned by the heat insulating partition wall 9. However, the present invention is not limited to this, and the present invention is also effective when applied to a partition partitioning the freezing compartment and the refrigerator compartment. Needless to say.

[0056]

As described above in detail, according to the present invention, the first storage room and the second storage having a higher temperature than the first storage room are formed by partitioning the inside of the heat insulation box with the heat insulating partition wall. In the refrigerator including the first and second storage compartments, the heat insulating partition wall is made of a vacuum heat insulating material, so that the heat insulation performance between the two storage compartments is significantly improved, and the temperature of the second storage compartment from the first storage compartment is affected by the temperature of the first storage compartment. It is possible to prevent or suppress a decrease in temperature.

As a result, the electric heater provided on the heat insulating partition wall as in the prior art can be removed or its capacity can be reduced, so that the number of parts can be reduced and the assembling workability can be reduced by simplifying the structure. Improvement and reduction in production cost and power consumption can be achieved. Further, since the thickness of the heat insulating partition wall itself can be reduced, the effective volume in the refrigerator can be increased.

According to the second aspect of the present invention, in addition to the above, the heat insulating partition wall partitions the two storage chambers, and is formed at the back of the two storage chambers to install the cooler and the blower. And the second storage room is also partitioned, so that when the cooling room where the temperature is reduced most is formed over the back of the second storage room, the influence of the temperature from the cooling room , The temperature of the second storage chamber can be effectively prevented or suppressed. In particular, since a total of three chambers are partitioned by the same heat insulating partition wall, the number of parts can be further reduced.

[Brief description of the drawings]

FIG. 1 is a front view of a refrigerator according to the present invention.

FIG. 2 is a front view of the refrigerator of the present invention excluding a door.

FIG. 3 is a vertical sectional side view of the refrigerator of the present invention.

FIG. 4 is a rear view of the refrigerator of the present invention.

FIG. 5 is another longitudinal side view of the refrigerator of the present invention.

FIG. 6 is a sectional view taken along line AA of FIG. 5;

FIG. 7 is a sectional view taken along the line BB of FIG. 6;

FIG. 8 is a sectional view taken along line CC of FIG. 6;

FIG. 9 is a perspective exploded perspective view of the refrigerator of the present invention.

FIG. 10 is a side view of a heat insulating partition wall that partitions a vegetable room and a freezing room.

FIG. 11 is an exploded side view of a heat insulating partition wall.

FIG. 12 is an exploded perspective view of a heat insulating partition wall.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Refrigerator 2 Outer box 3 Inner box 4 Polyurethane heat insulation material 9 Heat insulation partition wall 17 Vegetable room 18 Freezer room 37 Cooling room 38 Cooler 39 Blower 83 Vacuum heat insulating material

Continued on the front page (72) Inventor Hideo Shiraishi 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Hidefumi Mogi 2-5-2-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd.

Claims (2)

[Claims] 1. A first storage room and a first storage room, comprising an insulation box body filled with a heat insulating material between an outer box and an inner box, and the heat insulation box body is partitioned by a heat insulating partition wall. A refrigerator comprising a second storage room having a higher temperature, wherein the heat insulating partition wall is formed of a vacuum heat insulating material. 2. A cooling room formed behind the two storage rooms for installing a cooler and a blower, wherein the heat-insulating partition walls separate the two storage rooms and simultaneously form the second storage room and the second storage room. The refrigerator according to claim 1, wherein the cooling chamber is also partitioned.