JPH0510647A - Storing device - Google Patents

Abstract

PURPOSE:To provide an effective utilization of an inside part of a storing box by a method wherein some partitioned chambers composed of thermal conductive material partitioned into some small chambers are disposed in the storing box, a selection means for selecting an operation and a non-operation of an indoor fan is provided and the indoor fan is mounted in each of the small chambers. CONSTITUTION:After installing a refrigerator, an operating element 34a of a changing-over switch 34 is operated and it is selected whether a chamber RM2 is used for a defreezing operation or a cooling operation. That is, as the changing-over switch 34 is brought into continuity, indoor fans 30a and 30b cause indoor air to be circulated when a main power supply switch 72 is turned on so as to cause the chamber RM2 to become a forced convection chamber suitable for a defreezing operation. In turn, as the changing-over switch is changed over to a non-continuity state, the indoor fans 30a, 30b are not operated even if the main power supply 72 is turned on and the chamber RM2 becomes a natural convection chamber suitable for a refrigeration. When the indoor fans 30a, 30b are operated, cooled or heated air is circulated within the small chamber and other small chambers are cooled or heated through a heat conductive partition wall 27 with the circulated air.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to a storage cabinet that circulates warm air or cold air around the storage box to indirectly maintain a constant temperature inside the storage box.

[0002]

2. Description of the Related Art A refrigerator of this type includes a refrigerator and a warm storage. Conventionally, as a refrigerator of this type, Japanese Patent Laid-Open No. 2-1
The one disclosed in Japanese Patent No. 57576 is known.

In the device disclosed in the publication, a storage box is arranged in a heat insulation box, and an evaporator of a cooling mechanism and air cooled by the evaporator are blown between the heat insulation box and the storage box. A cooling fan is provided, and a convection fan that blows downward cooling air upward to cause convection is configured in the storage box.

In such a structure, when the cooling fan blows the air cooled by the evaporator to the outer circumference of the storage box,
The air in the storage box is cooled through the wall material of the storage box,
The perishables stored in the storage box are indirectly cooled.

[0005] Then, the convection fan blows the cool air, which tends to stay in the lower part of the storage box in a natural state, toward the upper part to make the temperature in the storage box uniform.

Further, Japanese Patent Laid-Open No. 63-185359 discloses a configuration in which two independent storage boxes are provided in a heat insulation box without the convection fan. The inside of each storage box is indirectly cooled by the cooled air that is blown to the outer circumference of the storage box.

[0007]

Thus, the refrigerator indirectly cooling the inside of the storage box is characterized in that the inside of the storage box is maintained at high humidity. It has been found that, if the chilled product is circulated, it is suitable for thawing a large-scale frozen product because the time can be shortened, but for normal refrigerated storage, there is less evaporation of water from the refrigerated product in the airless state.

[0008] However, like the former one, if the storage box is in one room, it is better to blow air to positively thaw the frozen product, but to store refrigerated products, it is better to keep the refrigerated product from the refrigerated product. This is preferable because the amount of water vapor is small. In addition, when a frozen product is stored, the temperature in the storage box may suddenly drop, and other fresh products may freeze.

On the other hand, even if a separate room is provided as in the latter case and used separately for refrigeration and thawing, the room for thawing is not suitable for refrigeration because it is maintained in a blown state.

By the way, the warm storage is used to hold the freshly cooked food in a warm state, and if the too hot food is to be stored in the warm storage and then cooled, the temperature should not be raised. It has an effect on cooking and has the same problem as thawing frozen foods in the refrigerator.

The present invention has been conceived in view of the above problems, and provides a storage container which can be stored in a storage box in an optimal state, such as refrigerating or thawing or warming or cooking. For the purpose of provision.

[0012]

In order to achieve the above object, the invention according to claim 1 is to dispose a storage box made of a heat conducting member in the heat insulation box, and to arrange the inner wall of the heat insulation box and the storage box. A storage main body having an air flow circulation passage formed between it and an outer wall, a heat exchange mechanism for bringing the air in the air flow circulation passage to a predetermined temperature, and a blower mechanism for blowing and circulating the air in the air flow circulation passage. A temperature control means for controlling the cooling operation of the heat exchange mechanism so that the temperature inside the storage box is within a predetermined range by providing a temperature sensor, and the inside air in the storage box of the storage main body. In a storage provided with an internal fan for circulation, a partitioning member made of a heat conducting member for partitioning the inside of the storage box into small chambers is arranged in the storage box, and selecting means for selecting whether to operate the internal fan or not. With a small It is constituted that installed the in-compartment fan within.

The invention according to claim 2 is the same as claim 1.
In the storage described in the above item (1), the selection means is composed of a timed switch that is deactivated after a predetermined time of activation.

[0014]

In the invention according to claim 1 configured as described above, the inside fan capable of selecting operation and non-operation is provided in the small chamber formed by the partition wall in the storage box,
It is suitable for thawing frozen foods and cooling hot foods by storing the frozen foods and hot dishes in the small chamber and operating the internal fan, and when the frozen foods are not stored, the internal fan is not operated. It is then suitable for storage.

When the internal fan is operating, the air cooled by the frozen material or warmed by the hot food is circulated in the small chamber, and the circulated air is used as a partition wall or wall material made of a heat conducting member. To cool or warm other small chambers in the storage box.

Next, in the invention according to claim 2 configured as described above, the selection means is constituted by a timed switch, and the fan in the refrigerator is operated to thaw the frozen product or cool the hot dish. After that, the fan in the same compartment is deactivated after a predetermined time, so that the fan is in a windless state suitable for storage.

[0017]

As described above, according to the present invention, it is possible to thaw a frozen food or cool a hot dish without adversely affecting the contents in the storage box, and at the same time, defrost the frozen food or a hot dish. It is possible to stop the operation of the internal fan and switch to normal storage except when cooling the storage box, and it is possible to provide a storage box that can more effectively use the inside of the storage box.

According to the second aspect of the present invention, since the small chamber used for thawing the frozen food and cooling the hot food becomes a windless condition after the end, which is a condition suitable for storage, the selection is made after the end. It is possible to save the trouble of operating the means to stop the operation of the internal fan.

[0019]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a front view of a refrigerator according to an embodiment of the present invention, FIG. 2 is a partially cutaway front view, and FIG. 3 is a partially cutaway top view.

In the figure, the refrigerator main body is provided with a heat insulating box 10 and a storage box 20, and the heat insulating box 10 has a heat insulating material 1 such as urethane foam between the inner wall of the outer box 11 and the outer wall of the inner box 12.
3 is filled, and a pair of left and right openings 1 is provided on the front surface.
4a and 14b are formed and the openings 14a and 1 are formed.
Insulating doors 15a and 15b for opening and closing 4b are attached by hinges so as to be opened and closed.

The storage box 20 is formed of a metal plate material such as stainless steel, which is a heat conducting member, in the form of a housing having an opening 21 on one surface thereof.
Both of the openings 14a and 14b are aligned as desired, and are fixedly supported on the outer peripheral edge of the inner surface of the front wall of the heat insulating box 10. At this time, the left and right side walls 22, 23, the upper wall 24, the bottom wall 25, and the rear wall 26 of the storage box 20 are held at a predetermined distance from the inner wall of the inner box 12 in the heat insulating box 10, and the gap is maintained by the air flow. A circulation passage W is formed.

In the storage box 20, a partition wall 27 made of a metal plate made of stainless steel, which is a heat conducting member, is fixed to the upper wall 24 and the bottom wall 25 of the storage box 20 at the upper and lower sides, respectively. The inside is divided into a room RM1 on the right side in the figure and a room RM2 on the left side in the figure. The partition wall 27 and the storage box 20 do not have to be hermetically sealed. Further, in this embodiment, the partition wall 27 is formed of a flat plate, but it may be formed of a plate material having a large surface area such as a corrugated plate to improve the heat exchange efficiency.

Each of the two internal fans 30a and 30b is constructed by fixing the fan 32 to the rotation axis of the fan motor 31, and is attached to the left side wall 22 via a supporting member so as to face the partition wall 27. Has been. A cover 40 for forming an air flow path is attached to the front surfaces of the internal fans 30a and 30b. The cover 40 has an exhaust port 41 formed in a portion facing the fan 32 and a lower portion. A suction port 42 is formed in the.
That is, the upper side end of the cover 40 contacts the upper wall 24, the left side end bent to have an L-shaped cross section contacts the left side wall 22 of the storage box, and the right side end of the cover 40 rear wall. 26
And the lower side forms the suction port 42 with a predetermined gap from the left side wall 22.

The left side wall 2 of the storage box 20 in the heat insulating box 10
An evaporator 51 of a cooling mechanism (heat exchange mechanism) 50 is fixed to the wall portion facing 2 with its air flow path oriented vertically, and between the evaporator 51 and the left side wall 22 of the storage box 20. Has an air circulation hole 61 formed in the upper part thereof, and a blower fan (blower mechanism) 62 is provided in the air circulation hole 61.
The shield plate 60 in which is disposed is fixed by its upper piece so as to hang from the upper wall of the inner box 12 in the heat insulating box 10.
A sufficient gap is formed between the lower side of the shielding plate 60 and the lower wall of the inner box 12, and the evaporator 51 is removed from the gap.
An air cooling flow path communicating with the upper air circulation hole 61 via the air flow path is formed.

As shown in FIG. 4, the cooling mechanism 50 includes a compressor 52 for compressing a refrigerant, a condenser 54 for condensing the compressed refrigerant under compression by an air cooling fan 53, and a condenser for condensing the same. A dryer 55 that dehumidifies the refrigerant, a capillary tube 56 that converts the dehumidified condensed refrigerant into a low-temperature low-pressure refrigerant, and an evaporator that cools by the heat of vaporization of the low-temperature low-pressure refrigerant and supplies the vaporized refrigerant to the compressor 52. 51 and is housed in an auxiliary box 10a formed on the left side of the heat insulating box 10 except for the evaporator 51. In the figure, a hot gas valve 57 for supplying the high-temperature compressed refrigerant compressed by the compressor 52 to the evaporator 51 at the time of defrosting is provided with an output side of the compressor 52 and the evaporator 5.
It is interposed in a pipe line connecting the input side of No. 1.

The compressor 52 is the compressor motor 5
2a and a compression mechanism 52b that is driven by being connected to the rotation axis of the compressor motor 52a,
The drive of the compressor motor 52a is controlled by the sequence control circuit 71 in the electric control circuit 70 as shown in FIG.

The electric control circuit 70 is connected to a commercial AC power source, and the main power source switch 72 for opening and closing the commercial AC power source and the internal power supply paths PW1 and PW2 is connected via a changeover switch (selecting means) 34. In-compartment fans 30a and 30b connected to the power supply paths PW1 and PW2, and the power supply paths PW1 and PW
2 and a sequence control circuit (temperature control means) 71 for controlling the temperature inside the chambers RM1 and RM2. The changeover switch 34 is for selecting whether or not to operate the internal fans 30a and 30b when the main power switch 72 is turned on. The operator 34a of the changeover switch 34 is provided on the front surface of the auxiliary box 10a. It is installed.

The sequence control circuit 71 includes a temperature sensor Th1 which conducts when the inside temperature T1 in the chamber RM1 exceeds a set upper limit temperature TH and a series circuit S1 in which an exciting coil of a relay R1 is connected in series. Temperature sensor Th that conducts when the internal temperature T1 becomes lower than the set lower limit temperature TL
2 and the exciting coil of the relay R3 are connected in series, the compressor motor 52a and the air cooling fan 5
And a series circuit S3 in which a make contact R2-2 of the relay R2 and a break contact R4-2 of the relay R4 are connected in series to a parallel circuit in which 3 and 3 are connected in parallel, and a forced release circuit R, respectively.
The relay R2 including 4-3 and R2-3 and the self-holding circuits S4 and S5 of the exciting coil in the relay R4 are connected to the power supply paths PW1 and PW2. The temperature sensors Th1 and Th2 are attached above the chamber RM1.

Next, the operation of this embodiment having the above structure will be described. After installing the refrigerator, the operator 34a of the changeover switch 34 is operated to select whether the room RM2 is for thawing or refrigerating. That is, when the operation switch 34a is operated to make the changeover switch 34 conductive, the internal fans 30a and 30b circulate the air in the internal compartment when the main power switch 72 is turned on, and forced convection suitable for thawing the chamber RM2. If the changeover switch 34 is set to the non-conducting state by setting it as a room, even if the main power switch 72 is turned on, the internal fan 30
The a and 30b do not operate, and the inside of the chamber RM2 becomes a natural convection chamber suitable for refrigeration.

Now, the changeover switch 34 is made conductive,
When the main power switch 72 is turned on, the internal temperature T1 is equal to or higher than the set upper limit temperature TH, so that the temperature sensor Th1 becomes conductive and energizes the exciting coil of the relay R1. Then, the make contacts R1-1 and R1-2 in the self-holding circuit S4 of the relay R2 are turned on, and the exciting coil of the relay R2 is energized, so that the make contact R2-1 is turned on and the relay R2 is held in the on state. Excuse me.

When the relay R2 is turned on, the make contact R2
-2 becomes conductive, the compressor motor 52a and the air-cooling fan 53 are energized via the break contact R4-2 of the relay R4, and the cooling mechanism 50 is started.

On the other hand, at the same time when the main power switch 72 is turned on, the blower fan 62 also starts blowing air, and through the air passage of the evaporator 51 from the gap between the lower side of the shield plate 60 and the lower wall of the inner box 12. Air is sucked, and the sucked air is started to be blown from the air circulation hole 61 to the air flow circulation passage W formed around the storage box 20. Therefore, the cooling mechanism 5
When 0 is started, the air sucked by the blower fan 62 is heat-exchanged when passing through the air flow path of the evaporator 51, and the cooled air is circulated through the air circulation hole 61 around the storage box 20. The air is blown to the passage W.

The cool air sent out from the air circulation hole 61 is the upper wall 24 of the storage box 20 and the inner box 1 of the heat insulation box 10.
It flows between the inner wall of 2 and the both wall materials are cooled. Since the wall material of the inner box 12 is filled with the heat insulating material 13 on the opposite surface, heat exchange is performed only for cooling the wall material, but for the upper wall 24, inside the chambers RM2, RM1. Since the temperatures T2 and T1 are higher, heat exchange is positively performed via the upper wall 24.

As a result, the cold heat of the cool air flowing in the air flow circulation passage W is taken by the air in the chambers RM2, RM1.
2, the temperatures T2 and T1 in the cold storage in RM1 decrease, and the temperature of the cool air in the air flow circulation passage W increases. In this way, as the cool air flows through the air circulation passage W, heat is exchanged through the upper wall 24, the right side wall 23, and the bottom wall 25, and the storage box 2
The inside of 0 is cooled. In addition, a part of the cool air flows along the rear wall 26 to cool the inside of the storage box 20.

In this way, heat is exchanged between the walls 22 to 27, the temperature inside the chamber in the chambers RM1 and RM2 gradually decreases, the temperature T1 inside the chamber falls below the set upper limit temperature TH, and the temperature sensor Th1. Even if is turned off, since the relay R2 is in the on state and is held by itself, the operation of the cooling mechanism 50 is continued.

However, when the internal temperature T1 becomes lower than the set lower limit temperature TL, the temperature sensor Th2 is turned on and the relay R3 is turned on.
Energize the excitation coil of. Then, similarly to the case of the self-holding circuit S4 described above, the relay R4 is turned on, the break contact R4-3 constituting the forced release circuit of the relay R2 is turned off, and the self-holding state of the relay R2 ends. Also, as in the case of the relay R2, the relay R4
Since the ON state of the break contact is self-maintained, the break contact R4-
2 is turned off, the make contact R2-2 is also turned off. Therefore, the compressor motor 52a and the air cooling fan 5
The power supply to 3 is stopped, and the cooling operation of the cooling mechanism 50 is released.

After that, the sequence control circuit 71 shown in FIG.
As shown in, the internal temperature T1 is controlled so as to be maintained within the range of the set upper limit temperature TH and the set lower limit temperature TL. In addition, the above-mentioned set upper limit temperature TH and set lower limit temperature in the refrigerator
The TL is adjusted within a few degrees, with 0 degrees Celsius as the standard.

As described above, the internal fan 3 in the room RM2
0a and 30b, since the changeover switch 34 is in a conductive state, the main power switch 72 is turned on and air is started at the same time, and the air in the refrigerator is sucked in from the lower suction port 42 of the cover 40 and the exhaust port. The air is exhausted from 41 toward the partition wall 27. That is, the air in the chamber RM2 first flows in parallel to the right direction in the drawing along the upper wall 24, abuts against the partition wall 27 to change its direction downward, flows along the partition wall 27, and then flows to the bottom wall. 25, it is turned again in the horizontal direction, flows leftward, and is sucked from the suction port 42.

As described above, in the room RM2, the strong wind is blown over the entire area of the inside of the room, and the room RM2 has a temperature of Celsius-
When the frozen mass frozen at about 30 degrees is accommodated, the air flow is cooled as it flows along the surface of the frozen mass, and the cooled air circulates in the chamber RM2, so that the internal temperature T2 is reduced. As shown by the alternate long and short dash line in FIG.

On the other hand, the inside of the chamber RM1 is cooled by the action of the cooling mechanism 50, and when the internal temperature T1 falls below the set lower limit temperature TL, the power supply to the compressor motor 52a and the air cooling fan 53 is stopped as described above. The cooling operation of the cooling mechanism 50 is canceled. However, even if the cooling operation of the cooling mechanism 50 is released, the blower fan 62 continues to blow air.

When the cooling operation of the cooling mechanism 50 is released,
The air circulating in the airflow circulation passage W is the evaporator 5
However, since the inside temperature T2 in the chamber RM2 is lowered by the frozen mass as described above, when the air in the air flow circulation passage W flows along the walls 24 and 25 around the chamber RM2. And is cooled by the cold heat in the chamber RM2.

That is, when the frozen mass is thawed, the cold heat in the chamber RM2 is released into the airflow circulation passage W in the chamber RM2 instead of the evaporator 51, even if the cooling mechanism 50 is not operated for cooling. The air in the air flow circulation passage W is cooled by operating the blower fan 62 regardless of the cooling operation of the cooling mechanism 50. Therefore,
Even if the cooling mechanism 50 is not operated, the inside of the chamber RM1 can be cooled.

FIG. 7 shows the relationship between the temperature (Tf) of the frozen mass, the temperature (T2) in the chamber RM2 and the temperature (T1) in the chamber RM1.

In the figure, when the internal temperature T1 gradually rises and the internal temperature T1 reaches the set upper limit temperature TH, the compressor motor 52a and the air-cooling fan 53 in the cooling mechanism 50 are energized to generate the internal temperature T1. Is gradually decreasing. At this time, the inside temperature T2 is rapidly lowered by accommodating an extremely low temperature frozen mass in the chamber RM2, and the temperature T1 inside the chamber RM1 is gradually decreased by the action of the cooling mechanism 50. When the temperature becomes lower than the lower limit temperature TL, the operation of the cooling mechanism 50 is canceled.

Even if the cooling mechanism 50 is deactivated, the room RM2
Although the cold heat in the inside is transferred to the room RM1, the air on the surface of the frozen mass is cooled to near the same temperature, but the internal fan 30
The air in the chamber RM2 is forcibly circulated by the action of a and 30b, and the internal temperature T2 is sufficiently higher than the temperature of the frozen mass,
Moreover, the temperature becomes lower than the set lower limit temperature TL, and the inside of the chamber RM1 is cooled. Therefore, the temperature in the room RM1 does not drop sharply like the temperature in the room RM2, and the set upper limit temperature
Cooled within the range between TH and lower limit temperature TL.

While the chamber RM2 is cooling the air in the air flow circulation passage W, the cold heat of the frozen mass gradually increases in the air flow circulation passage W.
The temperature Tf of the frozen mass rises because it is taken away by the air inside. Therefore, the cooling of the chamber RM1 gradually weakens and the temperature T
1 rises, and when the frozen mass is thawed, the set lower limit temperature
After TL, the temperature rises to the set upper limit temperature TH.

When the internal temperature T1 exceeds the set upper limit temperature TH, the cooling mechanism 50 is started as described above, and the room RM
2 is a normal refrigerator in which the inside temperature T2 is maintained between the set upper limit temperature TH and the set lower limit temperature TL, and stores the frozen mass that has been thawed. However, since the internal fans 30a and 30b are operating in the room RM2 at this time, it is not suitable for refrigeration.

In the above, the case where the changeover switch 34 is in the conductive state and the internal fans 30a and 30b are operated has been described, but the operation switch 34a can be operated to bring the changeover switch 34 into the non-conductive state.

Then, even if the main power switch 72 is turned on, the internal fans 30a and 30b do not operate, and the inside of the room RM2 is in a windless state, which is suitable for storing refrigerated goods.

FIG. 8 shows an electric control circuit of a refrigerator according to another embodiment of the present invention. In the refrigerator shown in the figure, the timer switch 3 is used instead of the changeover switch 34.
When the timer switch 35 is actuated, it conducts for a predetermined time and then becomes non-conducting.

In this structure, when the frozen mass is accommodated in the chamber RM2 and the timer switch 35 is actuated, the timer switch 35 becomes conductive and the internal fans 30a, 3
0b starts blowing air. Therefore, a strong wind is circulated in the chamber RM2, which is in a state suitable for thawing similarly to the above-described embodiment.

When the predetermined time has passed, the frozen mass is completely thawed, and the temperature T2 inside the chamber RM2 and the temperature T1 inside the chamber RM1 are reduced.
The difference with Therefore, timer switch 3
By setting the operation time in No. 5 to the time required for thawing, the timer switch 35 becomes non-conductive when thawing is completed.

When the timer switch 35 becomes non-conducting, the internal fans 30a and 30b stop blowing air, so that the room RM2 is in a no-air state and is in a state suitable for storing refrigerated goods.

That is, during the thawing, cold air is sent around the frozen mass to promote the thawing, and by the end of the thawing, there is no wind and the state is suitable for refrigeration. It is not necessary to operate the to stop the internal fans 30a and 30b.

In the above-mentioned embodiment, the case of thawing in the refrigerator has been described, but the storage of the present invention can be used as follows.

The chamber RM2 can be used for quick freezing instead of being used for thawing. When the food having a temperature higher than the internal temperature is stored in the room RM2, the internal fan 30a,
Since 30b blows a strong wind of cooled air around the food, cooling can be performed rapidly. In this case, the internal temperature T2 in the chamber RM2 rises due to the latent heat of the food, and the temperature change is transmitted to the chamber RM1 via the partition wall 27, so that the internal temperature T1 in the chamber RM1 is used as a reference. The temperature will be controlled.

In such a case, if the temperature control is performed based on the temperature T2 in the chamber RM2, the temperature T2 in the chamber rises immediately after the food is stored and the cooling mechanism 50 is activated. The room RM1 in which the temperature T1 has not changed is overcooled, but as described above, the room RM in which the internal fans 30a and 30b are not installed in this embodiment.
By performing the temperature control based on the inside temperature T1 of No. 1, even if the inside temperature T2 inside the chamber RM2 temporarily rises due to the rapid cooling, the cooling mechanism 50 is not immediately activated and the inside temperature of the chamber RM is reduced.
Prevent the situation where the inside of 1 becomes too cold.

Further, instead of applying the storage to a refrigerator, it can also be used as a warm storage. in this case,
A heater may be provided in place of the evaporator 51 in the cooling mechanism 50, and warm air may be blown into the airflow circulation passage W by the blower fan 62. In the case of such a configuration, the internal fans 30a and 30b blow air around the food that is too hot to take away heat, and warm the room RM1 through the partition wall 27.

On the other hand, in the above-mentioned embodiment, the chamber RM2
Although the internal fans 30a and 30b are installed inside, the room RM
The internal fans 30a and 30b may be provided in the inside of the unit 1 to form a thawing chamber. Further, although the two in-compartment fans 30a and 30b are arranged above and below, it is also possible to arrange only one fan below and blow air upward. Further, the blowing direction may be directed to the partition wall 27 so as to promote heat exchange by the partition wall 27.

Further, in the above-mentioned embodiment, the inside of the storage box is divided into two, but the number of divisions is arbitrary such as arranging a defrosting box in the center and dividing into three. . Further, the division direction is arbitrary, such as division in the vertical direction instead of division into the right and left.

Further, although the temperature sensors Th1 and Th2 are arranged in the chamber RM1 in the above embodiment, the temperature control may be carried out by arranging them in other parts. In the above embodiment, the sequence control circuit 71 controls the temperature sensor Th.
Although the cooling operation of the cooling mechanism 50 is controlled based on the detection results of 1 and Th2, a temperature sensor that measures the internal temperature T1 is used, and software control is performed by a microcomputer. The temperature control may be performed based on the above, and other accompanying control such as defrost control may be performed.

[Brief description of drawings]

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

FIG. 2 is a partially cutaway front view of the refrigerator.

FIG. 3 is a partially cutaway top view of the refrigerator.

FIG. 4 is a diagram showing a configuration of a cooling mechanism.

FIG. 5 is a circuit diagram of an electric control circuit.

FIG. 6 is a diagram showing a state of temperature control.

FIG. 7 is a diagram showing a temperature change during thawing.

FIG. 8 is a circuit diagram of an electric control circuit according to another embodiment.

[Explanation of symbols]

10 ... Insulation box 20 ... Storage box 27 ... Partition 30a, 30b ... In-compartment fan 34 ... Changeover switch 34a ... operator 35 ... Timer switch 50 ... Cooling mechanism 62 ... Blower fan 70 ... Electric control circuit 71 ... Sequence control circuit Th1, Th2 ... Temperature sensor W ... Air flow circulation passage RM1, RM2 ... Room TH ... Set upper limit temperature TL ... Lower limit temperature

Continuation of the front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display location F25D 11/02 Z 8511-3L G05D 23/00 G 9132-3H

Claims (2)

[Claims] 1. A storage main body in which a storage box made of a heat conducting member is disposed in an insulation box, and an air flow circulation passage is formed between an inner wall of the heat insulation box and an outer wall of the storage box, and the air flow. A heat exchange mechanism that brings the air in the circulation passage to a predetermined temperature, an air blowing mechanism that blows the air in the air circulation passage to circulate it, and a temperature sensor are provided so that the temperature in the storage box is within a predetermined range. In such a storage box, the storage box is provided with a temperature control means for controlling the cooling operation of the heat exchange mechanism, and an internal fan that circulates the internal air in the storage box of the storage main body. A partition wall composed of a heat conducting member for partitioning the inside into a small chamber is provided, and a selection means for selecting whether the internal fan is operated or not is provided, and the internal fan is installed in the small chamber formed by the partition wall. A store characterized by the fact that it has been done. 2. The storage according to claim 1, wherein:
A storage characterized in that the selection means is constituted by a time switch which is deactivated after a predetermined time of activation.