JP2002090025A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a refrigerator, in which cooling efficiency is improved and energy saving can be attained. SOLUTION: The refrigerator includes a storage chamber 10 for holding stores, a cooler 25 for generating cool air for cooling the chamber 10, a cool-air delivery path 27 for conducting the cool air to the chamber 10, a cool air return path 28 for conducting the cool air in the chamber 10 to the cooler 25, and a member 42, which forms partly the path 28, and releases at least partly the cold by the cool air flowing in the path 28.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator, and more particularly, to a refrigerator that discharges cold air generated by a cooler into a storage room and discharges cold generated by the cool air into the storage room.

[0002]

2. Description of the Related Art A conventional refrigerator of this type is disclosed, for example, in Japanese Patent Application Laid-Open No. 10-122719. According to this refrigerator, a cool air circulating air passage is provided behind the refrigerator compartment, and a cooler (evaporator) constituting a wall surface of the cool air circulating air passage is arranged facing the refrigerator compartment. Then, cold heat is released from the cooler toward the refrigerator compartment, and the refrigerator compartment is cooled by natural convection.

[0003] A blower is provided above the cooler. When performing rapid cooling in the refrigerator compartment, the cool air generated in the cooler by driving the blower is discharged into the refrigerator compartment through the cool air circulation air passage. Then, the cool air in the refrigerating compartment flows into the cool air circulating air passage through a suction hole provided in the cooler, thereby forming a cool air circulating passage.

Thus, during normal use, the cooling heat generated by the cooler is released from the entire surface of the cooler to cool the refrigerator compartment by natural convection, thereby preventing the driving noise of the blower.

[0005]

However, according to the above-mentioned conventional refrigerator, the cold heat discharged from the cooler and the cool air discharged from the cool air circulation air passage are circulated in the refrigerator compartment to exchange heat. At this time, the cool air having a temperature lower than the temperature in the refrigerator compartment flows into the cool air circulation passage from the suction hole without completely exchanging heat with the air in the refrigerator compartment.

[0006] Since the temperature of the cool air returning to the cooler (hereinafter referred to as "return cool air") is low, the evaporating temperature of the cooler becomes low. The cooling capacity of the cooler is determined by the operation coefficient εr shown in equation (1).
Is represented by Where L is work, Q is heat absorbed,
T1 is the condensation temperature, and T2 is the evaporation temperature. A is the heat equivalent of work and is given by 1/427 (kcal / kgm).

Εr = Q / AL = T2 / (T1-T2) (1)

Accordingly, when the evaporation temperature T2 is low, the operating coefficient εr of the cooler is low and the amount of absorbed heat Q
Therefore, there is a problem that cooling efficiency is reduced and wasteful energy is consumed.

Further, since the cooler is provided with the suction hole, the short circuit allows the air cooled by the cool heat discharged from the cooler and the cool air sent into the refrigerator compartment to immediately return to the cool air circulation air passage from the suction hole. Tends to occur. Therefore, heat exchange with air in the refrigerator compartment is not sufficiently performed,
Since the temperature of the return cold air is lower, the cooling efficiency is further reduced.

Further, since the cooler is arranged facing the refrigerator compartment, the surface temperature of the refrigerator on the refrigerator compartment side is, for example, −10.
When the temperature reaches ℃, frost and dew condensation are generated on the surface of the cooler, and there is also a problem that the inside of the refrigerator is dried and the stored items are deteriorated.

An object of the present invention is to provide a refrigerator that can improve cooling efficiency and save energy. Another object of the present invention is to provide a refrigerator capable of preventing dew condensation and drying in a refrigerator compartment.

[0012]

SUMMARY OF THE INVENTION To achieve the above object, the present invention provides a cooler for generating cool air, a cool air discharge passage for guiding cool air generated by the cooler into a storage room, A cool air return passage that guides cool air to the cooler,
A member that forms at least a part of the cool air return passage and that discharges at least a part of the cold generated by the cool air flowing through the cool air return passage into the storage chamber.

According to this configuration, the cool air generated by the cooler is discharged into the storage chamber through the cool air discharge passage.
The cool air exchanges heat with the air in the storage chamber to form a circulation path returning to the cooler through the cool air return passage. And
Cold heat generated by the cool air passing through the cool air return passage is released into the storage chamber via the member, and the cool air returning to the cooler is heated.

Further, according to the present invention, in the refrigerator having the above-described structure, the storage room includes first and second storage rooms separated by a partition wall, and the cool air discharged from the cool air discharge passage into the first storage room is discharged to the first storage room. The storage device is characterized in that it passes through two storage rooms and returns to the cooler through the cool air return passage.

The present invention also provides a cooler for generating cool air,
Forming a cold air discharge passage that guides the cool air generated by the cooler into the storage chamber, a cool air return passage that guides the cool air in the storage chamber to the cooler, and at least a portion of the cool air return passage; A member for releasing at least a part of the cold heat generated by the cool air flowing through the passage into another storage chamber.

According to this configuration, the cool air generated by the cooler is discharged into the storage chamber through the cool air discharge passage.
The cool air exchanges heat with the air in the storage chamber to form a circulation path returning to the cooler through the cool air return passage. And
Cold heat generated by the cool air passing through the cool air return passage is released into another storage chamber via the member, and the cool air returning to the cooler is heated.

Further, the present invention is characterized in that in the refrigerator having the above-described structure, a heat insulating material is provided on a surface of the member facing the inside of the cold air return passage. According to this configuration,
Cold heat generated by the cool air passing through the cool air return passage is released from the member into the storage room or another storage room via the heat insulating material.

Further, according to the present invention, in the refrigerator having the above-mentioned structure, at least a part of the cool air discharge passage is formed by the member, and at least a part of the cold generated by the cool air flowing through the cool air discharge passage is stored in the storage chamber. It is characterized by being released. According to this configuration, the cold generated by the cool air generated by the cooler is discharged to the storage room through the cool air discharge passage.

Further, the present invention is characterized in that in the refrigerator having the above-mentioned structure, a heat insulating material is provided on a surface of the member facing the inside of the cool air discharge passage. According to this configuration,
Cold heat generated by the cool air passing through the cool air discharge passage is released from the member into the storage chamber via the heat insulating material.

Further, the present invention is characterized in that the heat insulating material in the cool air discharge passage and the heat insulating material in the cool air return passage have different heat insulating properties in the refrigerator having the above structure. According to this configuration, the cold heat due to the cool air passing through the cool air discharge passage is released from the member through the heat insulating material into the storage chamber,
Cold heat generated by the cool air passing through the cool air return passage is released from the member into the storage room or another storage room via heat insulating materials having different heat insulating properties.

According to the present invention, in the refrigerator having the above-described structure, the cool air discharge passage is arranged above the cooler, and the cool air return passage is arranged below the cooler. According to this configuration, when the blowing means for circulating the cool air is stopped, the low-temperature cool air generated by the cooler flows down due to its large specific gravity. Then, cold heat is released from the member constituting the cool air return passage disposed below the cooler into the storage room or another storage room. Thereby, even when the air blowing means is stopped, the temperature in the storage room or another storage room is made uniform by the cold heat transmitted from the members and discharged from the whole.

When the cool air discharge passage is constituted by the above-mentioned members, the cool air exchanged with the air in the storage chamber is more than the upper member constituting the cool air discharge passage through which the cool air generated by the cooler passes. The lower member constituting the cool air return passage passing therethrough has a higher temperature. At this time, when the blowing means for circulating the cool air is stopped, the cool air generated by the cooler flows down and the lower member is cooled. Accordingly, the temperature of the member becomes uniform, and the temperature in the storage room or another storage room is made uniform by the cold heat released from the member.

According to the present invention, there is provided a refrigerator having the above-mentioned structure, further comprising: a freezing room having a lower room temperature than the storage room; and a freezer cooling device for generating cool air for cooling the freezing room. I have. According to this configuration, the storage room is, for example, a refrigerator room, and a dedicated cooler is provided in each of the refrigerator room and the freezing room. Thereby, the evaporation temperature of the cooler for the refrigerator compartment can be increased, and the cooling efficiency can be improved.

Further, the present invention is characterized in that the storage room is illuminated when the storage room is opened, and that an illumination lamp is provided near the member. According to this configuration, when the storage room is opened by opening the opening / closing door, the illuminating lamp is turned on, and the temperature of the member is raised by the radiant heat of the illuminating lamp, thereby preventing dew condensation due to moisture entering from the outside.

[0025]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are a side sectional view and a front view showing the refrigerator of the first embodiment. The refrigerator 1 has an inner box 2b disposed inside an outer box 2a covering the outer surface, and a gap between the outer box 2a and the inner box 2b is filled with a heat insulating material 2c such as urethane foam. The interior of the refrigerator 1 is divided into a refrigerator compartment 11, a vegetable compartment 12, and a freezer compartment 13 in this order from above.

The vegetable compartment 12 and the freezer compartment 13 are separated by a partition frame 17 and a partition plate 19 made of a heat insulating material.
The freezer compartment 13 is further divided into an upper portion and a lower portion by a partition frame 18 made of a heat insulating material. The refrigerator compartment 11 and the vegetable compartment 12 are partitioned by a partition frame 16 made of a heat insulating material and partition plates 31 and 32 made of a resin molded product.

At the lower part of the refrigerator compartment 11, there is provided an ice temperature compartment 14, which is an isolation compartment partitioned by a partition plate 46. The refrigerator compartment 11 is provided with a plurality of shelves 45 on which foods and the like are placed. The front surface of the refrigerator compartment 11 can be opened and closed by a rotary heat-insulating door 3. The front of the vegetable compartment 12, the upper part of the freezer compartment 13 and the lower part of the freezer compartment 13 can be opened and closed by sliding heat insulating doors 4, 5, 6, respectively.
5, 56 can be drawn out.

A compressor 20 is provided at a rear portion of the freezing chamber 13. The compressor 20 is connected to coolers 21 and 25 provided in cool air passages 23 and 29 to form a refrigeration cycle. FIG. 3 shows a circuit diagram of a refrigeration cycle. A condenser 71 is connected to the compressor 20, and refrigerant flows through the capillary tubes 72 and 73 and the cooler 2 as indicated by an arrow A1.
A first refrigeration cycle returning to the compressor 20 through 5 is constituted. Further, as indicated by an arrow A2, the refrigerant passes through the capillary tubes 72 and 74 and the cooler 21 and the compressor 2
A second refrigeration cycle returning to zero is configured. 77 is a cooling fan for cooling the condenser 71.

The first refrigeration cycle and the second refrigeration cycle are configured in parallel, and when the on-off valve 78 is opened, the first refrigeration cycle and the second refrigeration cycle are simultaneously operated. Therefore, cooling by the coolers 21 and 25 is performed, and the blower 2
The drive of 2 and 26 sends out cold air to the freezer compartment 13 and the refrigerator compartment 11.

When the on-off valve 78 is closed, the second refrigeration cycle is operated, cooling is performed by the cooler 21, and only the freezing chamber 13 is cooled by driving the blower 26. A dedicated cooler 2 for each of the refrigerator compartment 11 and the freezer compartment 13
Since the cooling units 5 and 21 are provided, the cooling temperature of the cooling unit 25 can be set high to prevent dew condensation and icing in the cooling unit 25, the member 42, and the refrigerator compartment 11. When the indoor temperatures of the refrigerator compartment 11 and the vegetable compartment 12 are within a predetermined range, the compressor 20 and the cooling fan 77 are reduced in output to operate the second refrigeration cycle, thereby conserving energy. Is available.

Further, since the coolers 21 and 25 are arranged in parallel, the connection of the piping through which the refrigerant flows can be simplified. That is, many of the welding locations can be provided in the machine room in which the compressor 20 is disposed, so that productivity and maintainability are improved. Reference numerals 75 and 76 denote temperature sensors for detecting the temperatures in the refrigerator compartment 11 and the freezer compartment 13, respectively.
The compressor 20 is driven by the detection at 76.

Incidentally, a three-way valve 79 shown by a broken line in the figure may be provided in place of the on-off valve 78. Switching between the case where the first refrigeration cycle and the second refrigeration cycle are simultaneously operated by switching the three-way valve 79 and the case where only the second refrigeration cycle is operated to cool the refrigerator compartment 11 and the refrigerator compartment 13. Can be.

1 and 2, a defrost heater 6 for defrosting the coolers 21 and 25 is provided below the coolers 21 and 25.
1, 62 are provided. 63 and 64 are drain receiving members. The cooler 21 is arranged in the cool air passage 23, and the wall surface of the cool air passage 23 is formed by the inner box 2b and the evaporative cover 33 made of a resin molded product. Blower 22
Is disposed above the cooler 21 in the cool air passage 23.
The cool air passage 23 communicates with the freezer compartment 13 through discharge ports 13a, 13c and a return port 13b provided on the back plate 33a of the freezer compartment 13.

The cooler 25 is arranged in the cool air passage 29, and the blower 26 is arranged above the cooler 25. The cool air passage 29 includes a cool air discharge passage 27 that guides cool air generated by the cooler 25 to the refrigerator compartment 11 and a cool air in the refrigerator compartment 11 through the cooler 2.
5 and a cool air return passage 28 returning to the position shown in FIG.

The wall surface of the cool air return passage 28 is formed by a member 42 forming the back wall of the refrigerator compartment 11 and the ice compartment 14 and the inner box 2b. The cold air discharge passage 27 is divided into front and rear parts by a partition wall 27a.
7d, and a rear portion 27e composed of a partition wall 27a and an inner box 2b. The cooler 25 and the pressure chamber 27 are formed by the partition wall 27a.
b are isolated from each other, and a blower 26 is attached to the partition wall 27a. The member 42 is formed by sheet metal working of a metal plate such as aluminum or stainless steel as shown in FIG.

The ceiling of the refrigerator compartment 11 has a cool air discharge passage 2
7 is provided with a ceiling cool air discharge passage 57.
The wall surface of the ceiling cool air discharge passage 57 is formed by the upper plate 43 made of a resin molded product and the inner box 2b. Discharge ports 42a and 43a are provided in the member 42 and the upper surface plate 43. A transparent lighting cover 53 is provided at the center of the ceiling of the refrigerator compartment 11.
An illumination lamp 51 covered with is provided to illuminate the refrigerator compartment 11.

On the left side of the cool air return passage 28, an ice maker 67
A water supply pump 66 for supplying water is provided, and an ice temperature duct 60 that branches from the discharge side of the blower 26 and guides cool air to the back of the ice temperature chamber 14 is provided on the right side. Further, behind the vegetable compartment 12, an electric circuit 58 for driving the compressor 20, the blowers 23 and 26, and the like is provided via the heat insulating material 2c.

In the refrigerator 1 having the above configuration, the compressor 20
When the second refrigeration cycle is operated by the drive of, cooling by the cooler 21 is performed, and the blower 22 is driven.
Thereby, the air in the freezing compartment 13 is sucked into the cool air passage 23 from the return port 13b. The air is cooled by exchanging heat with the cooler 21 and discharged to the freezing compartment 13 through the discharge ports 13a and 13c. As a result, the inside of the freezer compartment 13 becomes, for example, -20
Cool to ° C.

By operating the first refrigeration cycle, the blower 2
6 is driven, the air in the vegetable compartment 12 returns to the return port 12b.
Is sucked into the cool air return passage 28. The air is cooled 2
The cooling air flows through the cool air discharge passage 27 and is discharged from the discharge ports 42 a and 43 a into the refrigerator compartment 11.

The cold air in the refrigerator compartment 11 is supplied between the shelves 45 and between the shelves 45.
Is discharged to the front inside the vegetable compartment 12 through the communication passage 12a. Then, the inside of the vegetable compartment 12 is cooled down from the front of the storage container 54, and the cool air is circulated from the return port 12b to the cool air return passage 28. Discharge port 42a,
The cool air discharged from the refrigerator compartment 43a to the refrigerator compartment 11 is
Food is deprived of cold heat before it flows into the area. Thereby, the inside of the refrigerator compartment 11 is cooled to, for example, 3 ° C.
2 is cooled to, for example, 5 ° C.

A part of the cool air sent from the blower 26 is immediately discharged through the ice temperature duct 60 from the discharge port 60a into the ice temperature chamber 14. Thereby, the temperature in the ice greenhouse 14 can be maintained at, for example, -1 ° C.
The ice warm room 14 becomes a chilled room when the amount of cold air discharged inside is made small and the room temperature is around 0 ° C., and becomes a vegetable room when the amount of cold air is further reduced and the room temperature is around 5 ° C. The amount of cool air can be changed by opening and closing a door pivotally supported so as to cover the discharge port 60a.

In the refrigerator of the present embodiment, the refrigerator compartment 11 and the vegetable compartment 12 can be regarded as one storage compartment, and the schematic configuration is as shown in FIG. The temperature of the cool air generated by the cooler 25 is, for example, −20 ° C. The cool air passes through the cool air discharge passage 27 in the direction of arrow A1 by the blower 26.

At this time, since the member 42 is made of metal, a part of the cold heat of the cold air is exchanged with the member 42, and the temperature of the member 42 becomes, for example, about -5.degree. Cold heat is released. For this reason, the discharge ports 42a and 43a pass through the cool air discharge passage 27 and the ceiling cool air discharge passage 57.
The temperature of the cool air discharged in the direction of arrow A2 from (see FIG. 1) is, for example, about −10 ° C.

The cool air discharged into the storage room 10 and the released cold heat exchange heat with the air in the storage room 10 to form the storage room 1.
0 is cooled to about 3 ° C. At this time, since the heat exchange with the cold air in the storage room 10 is not completely performed, the return port 12b
The temperature of the cool air flowing into the cool air return passage 28 in the direction indicated by the arrow A3 from FIG. The temperature in each room is determined by the evaporation temperature of the cooler 25, the cooling capacity of the cooler 25, the amount of air blown by the blower 26, and the volume of each room.

As described above, since the member 42 is made of metal, a part of the cool heat of the cool air passing through the cool air return passage 28 is
2 and is discharged into the storage room 10 as B2. Therefore, since the storage room 10 can be cooled by further removing heat from the storage room 10 (the refrigerator room 11, the vegetable room 12, and the ice temperature room 14 in FIG. 1), the cooling efficiency can be improved. Further, since the temperature of the return cool air is increased, the operation coefficient of the cooler 25 increases. Therefore, the amount of heat absorbed becomes larger for the same work amount, so that energy saving can be achieved.

In FIG. 1, the member 42 is a vegetable room 1
2 is arranged upward from the rear upper part,
A cool air return passage may also be provided on the front surface of 8 via a heat insulating wall, and the member 42 may be arranged to extend downward. This way,
Although the volume of the vegetable compartment 12 is reduced, the cooling efficiency can be further improved.

Moreover, since the cold is emitted from the entire surface of the member 42, the room can be uniformly cooled, and the member 42 is used as a reflector for illuminating light for illuminating the inside of the refrigerator compartment 11 from above. Illumination can be uniform. At this time, by disposing the illuminating lamp 51 near the member 42, the illuminating lamp 51 is turned on when the heat insulating door 3 is opened, and the temperature of the member 42 is increased by the radiant heat. Therefore, it is possible to prevent the dew condensation on the member 42 due to the invasion of the humidity of the outside air.

The present invention is not limited to this embodiment, and the same effect as described above can be obtained by a member that emits cold heat instead of the member 42 made of metal. For example, the member 42 may be a material having high thermal conductivity, and may be a ceramic material, a resin material impregnated with a metal filler, or the like. When the thickness of the member 42 is large, the cold storage capacity is increased, and the strength is also increased. When the thickness is small, the efficiency of discharging cold heat is improved, which is advantageous for weight reduction. Therefore, a thin plate or a thick plate may be selected and provided at an appropriate time in accordance with the purpose.

An uneven shape may be formed on the surface of the member 42 by press working or the like. By doing so, the member 42
Surface area can be increased, and the amount of chilling and the amount of cold heat released can be increased to perform more uniform cooling.
The concavo-convex shape is a linear shape, so that
2 can be improved.

The member 42 is replaced with a jelly-like or liquid cold insulator 42c as shown in FIG.
It may be a cold storage member sealed with g. In this way, the member 42 is stored more cold by the cool heat of the cool air flowing through the cool air passage 29, and is released as cool heat according to the temperature distribution in the refrigerator compartment 11. Therefore, the refrigerator compartment 11 is uniformly cooled.

Further, the cold storage member absorbs heat and dissipates heat during the stop of the compressor 20 and fluctuations in the cool air temperature in the cool air passage 29, so that the cool air temperature in the cool air passage 29 can be kept constant. Then, the temperature in the refrigerator compartment 11 can be stably and uniformly maintained at a constant temperature.

In FIG. 6, the cool air discharge passage 27 is disposed above the cooler 25 and the cool air return passage 28 is connected to the cooler 2.
It is arranged below 5. When the temperature in the storage room 10 becomes equal to or lower than a predetermined temperature (for example, 3 ° C.) and the blower 26 is stopped, the temperature of the upper part of the member 42 that comes into contact with the cool air generated by the cooler 25 becomes the member that comes into contact with the return cool air. 42 is lower than the temperature below.

The cool air around the cooler 25 flows down the cool air return passage 28 because of its low temperature and large specific gravity. Thereby, the temperature of the lower portion of the member 42 is lowered, so that the temperature of the member 42 can be made uniform, and the temperature of the cool air around the cooler 25 that has flowed down is raised by heat exchange to be close to the temperature in the storage room 10. Become. Accordingly, the temperature inside the storage room 10 can be made more uniform by the cold heat discharged from the member 42 and the cool air discharged from the return port 12b, and the cool air flowing back into the storage room 10 from the return port 12b. Can be prevented from being too cold due to direct contact.

Further, the return port 12b is connected to the discharge ports 42a, 43
Since it is arranged at a position distant from “a”, it is possible to prevent a short circuit in which the discharged cool air flows into the return port 12b without circulating through the refrigerator compartment 11, thereby improving the heat exchange efficiency. The cooler 25 and the member 42 are replaced with the ceiling surface 11a and the side wall 11b of the refrigerator compartment 11 (refer to FIG. 2).
And the same effect as above can be obtained.

FIG. 7 is a schematic view showing a refrigerator according to the second embodiment. The same parts as those in the first embodiment of FIG. 6 described above are denoted by the same reference numerals. The difference from the first embodiment is that the ceiling cool air discharge passage 57 (see FIG. 6) is omitted. Other configurations are the same as those of the first embodiment. Further, a freezing chamber similar to that of the first embodiment may be provided.

According to the present embodiment, the cool air of, for example, −20 ° C. generated in the cooler 25 is blown by the blower 26 into the arrow A1.
Through the cool air discharge passage 27. At this time, since the member 42 is made of metal, a part of the cold heat of the cold air is exchanged with the member 42, and the temperature of the member 42 becomes about -5 ° C.
Inside, cold heat is released like B1. And the member 42
The cold air of about −10 ° C. is discharged in the direction of arrow A2 from the discharge port 42a (see FIG. 1) formed at the bottom.

The cold air discharged into the storage room 10 and the discharged cold heat exchange heat with the air in the storage room 10 to form the storage room 1.
0 is cooled to about 3 ° C. At this time, since the heat exchange with the cold air in the storage room 10 is not completely performed, the return port 12b
The temperature of the cool air flowing into the cool air return passage 28 in the direction of arrow A3 from FIG. Then, a part of the cool heat of the cool air passing through the cool air return passage 28 is exchanged with the member 42, and the cool heat is released into the storage room 10 as indicated by B2. Therefore, the same effect as in the first embodiment can be obtained.

Here, if the ceiling cool air discharge passage 57 (see FIG. 6) is provided, the cool air is discharged from the rear surface of the refrigerator 11 by the member 42 and the cool air is discharged through the discharge port 42a. Cool air is discharged from the front part of the cooling air outlet 11 through the cooling air discharge passage 57 through the outlet 43a. Therefore, the entire refrigerator compartment 11 can be cooled uniformly.

Also, the member 42 is not provided with the discharge port 42a,
If the discharge port 43a of the upper surface plate 43 is formed only in front of the refrigerator compartment 11, the discharged cool air flows down the front of the refrigerator compartment 11 and becomes an air curtain when the heat insulating door 3 is opened to suppress the entry of outside air. As a result, it is possible to suppress a rise in the temperature inside the refrigerator. Further, the cool air is not discharged while passing through the cool air discharge passage 27 and is sufficiently exchanged with the member 42 to be discharged into the storage room 10 as cold heat. Then, the temperature of the cool air discharged from the ceiling cool air discharge passage 57 can be raised to approach the temperature of the member 42, so that the inside of the storage room 10 can be cooled more uniformly.

Therefore, it is more desirable to provide the cool air discharge passage 57 (see FIG. 6) as in the first embodiment.
The blower 26 is disposed above the cooler 25 so as to be provided close to the ceiling cool air passage 57, and the discharge port 43a arranged in the back of the ceiling cool air passage 57 (in front of the refrigerator compartment).
Cool air can be sent efficiently up to.

Next, FIG. 8 is a schematic view showing a refrigerator according to the third embodiment. The same parts as those in the second embodiment shown in FIG. 7 are denoted by the same reference numerals. The difference from the second embodiment is that the surface of the member 42 facing the cool air return passage 28 and the cool air discharge passage 27 is insulated. That is, the material 35 is provided.
Other configurations are the same as in the second embodiment. Also, the first
A freezing compartment similar to the embodiment may be provided.

According to the present embodiment, the cold generated by the cool air passing through the cool air discharge passage 27 and the cool air return passage 28 is supplied to the heat insulating material 35.
Through the surface of the member 42 as indicated by arrows B1 and B2. Thereby, even when dew condensation or frosting occurs on the member 42 due to the low temperature of the cool air passing through the cool air discharge passage 27 and the cool air return passage 28, the heat insulating material 35 can prevent such occurrence. Has become.

Further, since the temperature of the cool air passing through the cool air return passage 28 is higher than the temperature of the cool air passing through the cool air discharge passage 27, the heat insulating material 35 disposed on the surface of the member 42 facing the cool air return passage 28 is used. It is made thin and has a heat insulation characteristic different from that of the cold air discharge passage 27 side. Thereby, it is possible to prevent the heat insulation effect from being excessive and the cool heat released into the storage room 10 from being reduced more than necessary. The heat insulation properties may be varied according to the thermal conductivity of the heat insulating material.

Since the temperature of the cool air passing through the cool air return passage 28 is high, the heat insulating material 35 may be provided only on the cool air discharge passage 27 side. Further, the storage room facing the cool air return passage 28 includes the ice temperature room 14 shown in FIG. 1 described above, and when the room temperature is set higher than that of the refrigerator room 11, the release of the cool heat from the member 42 is suppressed. Therefore, the heat insulating material 35 may be provided only on the cold air return passage 28 side. Further, even when the member 42 is partially used (for example, the case shown in FIG. 9 described later), the same effect can be obtained by providing the heat insulating material.

Next, FIG. 9 is a schematic diagram showing a refrigerator according to a fourth embodiment. The same parts as those in the second embodiment shown in FIG. 7 described above are denoted by the same reference numerals. The difference from the second embodiment is that the member 42 that emits cold heat into the storage room 10 is located on the cold air return passage 28 side. Only the cold air discharge passage 27 side is omitted. Other configurations are the same as in the second embodiment. Further, a freezing chamber similar to that of the first embodiment may be provided.

According to the present embodiment, the effect of uniformly cooling the inside of the storage room 10 is reduced because the cold air is not released by the cool air passing through the cool air discharge passage 27, but the cool air of the cool air passing through the cool air return passage 28 is reduced. The part is heat-exchanged with the member 42 and discharged into the storage chamber 10 as indicated by B2.

Therefore, similarly to the first embodiment, the storage room 10 (cooling room 11 and vegetable room 12) can be further deprived of heat from the storage room 10 by the cool air passing through the cool air return passage 28, so that the storage room 10 can be cooled. Cooling efficiency can be improved. Further, since the temperature of the return cool air is increased, the operation coefficient of the cooler 25 increases. Therefore, the amount of heat absorbed becomes larger for the same work amount, so that energy saving can be achieved. It should be noted that another storage room is provided at a different location communicating with the cooler 25, and the cool air return passage of the other storage room is connected to the member 4.
2, the same effect can be obtained.

Next, FIG. 10 is a schematic view showing a refrigerator according to a fifth embodiment. The same parts as those in the first embodiment of FIG. 1 described above are denoted by the same reference numerals. The difference from the first embodiment is that the freezer compartment 13 is arranged above and the refrigeration compartment 1
1 is disposed below and partitioned by the partition plate 19, and the wall surface of the cool air return passage 23 a of the freezing compartment 13 is formed by a member 42 facing the refrigerating compartment 11. Other configurations are the same as those of the first embodiment. Further, the same vegetable room or ice temperature room as in the first embodiment may be provided in communication with the refrigerator room 11.

According to the present embodiment, a part of the cold heat of the cool air passing through the cool air return passage 23a of the freezing compartment 13 is exchanged with the member 42 and is discharged into the refrigerating compartment 11 like B3. Therefore, since the cooling can be performed by removing heat from the refrigerator compartment 11, the cooling efficiency of the refrigerator compartment 11 can be improved.
Further, since the temperature of the return cold air in the freezing compartment 13 is increased, the operation coefficient of the cooler 21 is increased, and the amount of absorbed heat is increased with respect to the same work amount.

In the embodiment of the present invention, the member 42
Is integrally formed on the side of the cool air discharge passage and the side of the cool air return passage, the member 42 may be divided and provided only at a necessary portion. For example, when the temperature of the ice temperature chamber 14 (see FIG. 1) is set higher than that of the refrigerator compartment 11, the member 42 behind the ice temperature chamber 14 may be removed. Even if you do this,
In the portion where the member 42 is arranged, the same effect as described above can be obtained.

Although the evaporators are used as the coolers 21 and 25, the same effect can be obtained by using a Peltier cooler or another cooler. Also,
The coolers 21 and 25 can obtain the same effect by using a series-type refrigeration cycle. The same effect can be obtained even when both the freezing room and the refrigerating room are cooled by one cooler. be able to.

[0072]

According to the present invention, a part of the cool heat of the cool air passing through the cool air return passage is exchanged with the members, and the cool heat is released into the storage room. Therefore, since the storage room can be cooled by removing heat from the storage room, the cooling efficiency can be improved. Further, since the temperature of the returned cool air is increased, the operation coefficient of the cooler is increased, and the amount of absorbed heat is increased with respect to the same work amount, so that energy can be saved.

Further, according to the present invention, a part of the cool heat of the cool air passing through the cool air discharge passage is exchanged with the members, and the cool heat is released into the storage room. Therefore, the storage room can be cooled uniformly.

Further, according to the present invention, by arranging a heat insulating material on the surface of the member facing the inside of the cool air discharge passage, it is possible to prevent condensation and frost formation on the member due to the low temperature cool air passing through the cool air discharge passage.

According to the present invention, the heat insulating material provided on the surface of the member facing the cool air return passage and the heat insulating material provided on the surface of the member facing the cool air discharge passage have different heat insulating properties. It is possible to prevent an excessive heat insulation effect of the cool air passing through the cold air return passage that is higher than the cool air passing through the cool air discharge passage, thereby preventing the cool heat released into the storage chamber from being reduced more than necessary.

According to the present invention, the cool air discharge passage is arranged above the cooler, and the cool air return passage is arranged below the cooler. Therefore, when the blower is stopped, the cool air around the cooler is discharged. It flows down at low temperature due to its large specific gravity. Thereby, the temperature of the lower part of the member is lowered to make the temperature of the member uniform, and the temperature of the cold air flowing down is raised by heat exchange to become close to the temperature in the storage room. Therefore, the temperature in the storage room can be made more uniform by the cold heat discharged from the member and the cool air discharged from the return port.

Further, according to the present invention, since a dedicated cooler is provided in each of the storage room and the freezing room, the cooling temperature of the cooler for cooling the storage room is set to be high, so that the cooler, the member, and the storage room are set. Dew condensation and icing can be suppressed.

Further, according to the present invention, a part of the cold heat of the cool air passing through the cool air return passage of the first storage room is exchanged with the members and released into the second storage room. Therefore, since cooling can be performed by removing heat from the second storage chamber, the cooling efficiency in the second storage chamber can be improved. Further, since the temperature of the return cold air in the first storage chamber is increased, the operating coefficient of the cooler for cooling the first storage chamber is increased, and the amount of absorbed heat is increased for the same work amount, so that energy saving can be achieved. it can.

Further, according to the present invention, by disposing the illuminating lamp near the member, the illuminating lamp is turned on when the opening / closing door is opened, and the radiant heat of the illuminating member raises the temperature of the member. Thereby, it is possible to prevent dew condensation on the member due to invasion of the moisture of the outside air.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing a refrigerator according to a first embodiment of the present invention.

FIG. 2 is a front view showing the refrigerator according to the first embodiment of the present invention.

FIG. 3 is a circuit diagram showing a cooling cycle of the refrigerator according to the first embodiment of the present invention.

FIG. 4 is a perspective view showing members of the refrigerator according to the first embodiment of the present invention.

FIG. 5 is a perspective view showing another configuration of the member of the refrigerator according to the first embodiment of the present invention.

FIG. 6 is a schematic view showing a refrigerator according to the first embodiment of the present invention.

FIG. 7 is a schematic view showing a refrigerator according to a second embodiment of the present invention.

FIG. 8 is a schematic view showing a refrigerator according to a third embodiment of the present invention.

FIG. 9 is a schematic view showing a refrigerator according to a fourth embodiment of the present invention.

FIG. 10 is a schematic view showing a refrigerator according to a fifth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Refrigerator 2a Outer box 2b Inner box 3, 4, 5, 6 Insulated door 11 Refrigerator room 12 Vegetable room 13 Freezer room 14 Ice hot room 20 Compressor 21, 25 Cooler 22, 26 Blower 23, 29 Cold air passage 27 Cold air discharge passage 23a, 28 cool air return passage 35 heat insulating material 36 heat insulating material 42 member 51 illumination light 54, 55, 56 storage container 57 ceiling cool air discharge passage 58 electronic circuit 61, 62 defrost heater 71 condenser 72, 73, 74 capillary tube 75, 76 Temperature sensor 77 Cooling fan 78 On-off valve 79 Three-way valve

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Zenichi Inoue 22-22 Nagaikecho, Abeno-ku, Osaka City, Osaka F-term (reference) 3L045 AA04 AA07 BA01 CA02 DA02 EA01 GA07 HA02 PA04 PA05

Claims (10)

[Claims] A cooler that generates cool air; a cool air discharge passage that guides cool air generated by the cooler into a storage chamber; a cool air return passage that guides cool air in the storage chamber to the cooler; A member that forms at least a part of a passage and that discharges at least a part of cold heat generated by the cool air flowing through the cool air return passage into the storage chamber. 2. The storage room includes first and second storage rooms separated by a partition wall, and cool air discharged from the cool air discharge passage into the first storage room passes through the second storage room and returns to the cool air. The refrigerator according to claim 1, wherein the refrigerator is returned to the cooler via a passage. A cooler that generates cool air; a cool air discharge passage that guides cool air generated by the cooler into a storage chamber; a cool air return passage that guides cool air in the storage chamber to the cooler; A member that forms at least a part of the passage and discharges at least a part of the cold heat generated by the cool air flowing through the cool air return passage into another storage chamber. 4. The refrigerator according to claim 1, wherein a heat insulating material is provided on a surface of the member facing the inside of the cold air return passage. 5. The cold air discharge passage at least partially formed by the member, and at least a part of the cold generated by the cool air flowing through the cool air discharge passage is discharged into the storage chamber. The refrigerator according to any one of claims 1 to 4. 6. The refrigerator according to claim 5, wherein a heat insulating material is provided on a surface of the member facing the inside of the cool air discharge passage. 7. The refrigerator according to claim 6, wherein the heat insulating material in the cool air discharge passage and the heat insulating material in the cool air return passage have different heat insulating properties. 8. The cool air discharge passage is arranged above the cooler, and the cool air return passage is arranged below the cooler. refrigerator. 9. The refrigerator according to claim 1, further comprising: a freezer compartment having a lower room temperature than the storage compartment; and a freezer compartment cooler for generating cool air for cooling the freezer compartment. A refrigerator according to any of the above. 10. The refrigerator according to claim 1, further comprising an illumination lamp illuminating the inside of the storage room when the storage room is opened and arranged near the member.