JP2001317852A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a refrigerator in which a refrigerating chamber and a freezing chamber are provided respectively in the upper and lower parts, the cooling efficiency and the inner volumetric efficiency are improved, and food is stored without loss of good quality, and besides, the ease-of-use is improved. SOLUTION: A first evaporator 45 and a first fan 46 are provided in a first cooling chamber 74 of about L-shape in the top and the upper rear part in the refrigerating chamber 96 to cool the chamber 96 and a vegetable chamber 99. A freezing chamber 102 is cooled by a second evaporator 61 and a second fan 62 provided in the lower rear part to enhance the cooling efficiency and the inside volumetric efficiency. A low temperature chamber 105 is provided between the vegetable chamber 99 and the freezing chamber 102. The chamber 105 is stably and easily maintained at low temperature by cold-controlling by the evaporator 61 and fan 62 through a damper device 108.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator having a refrigerator compartment at the top and a freezer compartment at the bottom.

[0002]

2. Description of the Related Art Recent refrigerators are provided with a storage room controlled at a plurality of temperatures corresponding to foods to be stored. conventionally,
The mainstream was a refrigerator room at the top, a refrigerator room at the center, and a vegetable room at the bottom, but recently emphasizing ease of use,
Refrigerators with a refrigeration compartment at the top, a freezer compartment or a vegetable compartment at the center and at the bottom have been proposed and become the mainstream. Among them, a conventional example is disclosed in JP-A-5-71850.

Hereinafter, the conventional refrigerator will be described with reference to the drawings.

FIG. 10 is a sectional view of a conventional refrigerator, and FIG. 11 is a refrigeration cycle diagram of the conventional refrigerator.

In FIG. 10, 1 is a refrigerator main body, 2 is a refrigeration room provided on the upper part of the main body 1, 3 is a freezing room provided on the lower part, and 4 is a front opening of the refrigeration room 2 which can be opened and closed. The attached door 5 is a door that is openably and closably attached to the front opening of the freezer compartment 3, and the reference numeral 6 is a heat insulating partition wall that defines the refrigerator compartment 2 and the freezer compartment 3. Reference numeral 7 denotes a cooling chamber provided at a rear portion of the freezing chamber 3, which is internally provided with an evaporator 8 of a refrigeration cycle and a blower 9 for forced circulation.

Reference numeral 10 denotes a vegetable room provided in the lower part of the refrigeration room 2, and reference numeral 11 denotes a low-temperature room for mainly storing fresh foods such as meat and seafood. Reference numeral 12 denotes an air path control panel provided behind the vegetable room 10 and the low-temperature room 11, and has therein the refrigeration room 2
The room temperature is adjusted to a predetermined value (for example, 4
C) and the low-temperature chamber 11
The room temperature is adjusted to a predetermined value (for example, 0
(° C.).

Reference numeral 15 denotes a cool air discharge port from the cooling room 7 to the freezing room 3, and 16 denotes a cool air suction port from the freezing room 3 to the cooling room 7. 17 is provided at the rear of the refrigerating compartment 2 covered with a back plate 18, and is provided from the cooling compartment 7 to the damper device 1.
A cool air discharge air passage communicating with the refrigerator compartment 2 through
Is a cool air discharge port that opens into the refrigerator compartment 2 from the cool air discharge air passage 17. Reference numeral 20 denotes a cool air discharge air path communicating from the cooling chamber 7 to the low temperature chamber 11 via the damper device 14, and 21 denotes a cool air discharge air path from the cool air discharge air path 20.
It is a cool air discharge port that opens to the outside. Reference numeral 22 denotes a cool air intake air passage communicating from the refrigerator compartment 2 to the cooling compartment 7. 2
Reference numeral 3 denotes a cold air inlet of the cold air suction air passage 22 opened in the refrigerator compartment 2 and provided at the rear of the vegetable compartment 10 to cool the refrigerator compartment 2, the vegetable compartment 10 and the cold room 11 and cool the inside. It is configured to be inhaled.

Temperature detectors 24, 25, and 26 detect the temperatures in the refrigeration compartment 2, the freezing compartment 3, and the low-temperature compartment 11, and maintain the temperature of each compartment at an appropriate temperature through a temperature control device (not shown). It is. 27 is a back plate 18 of the refrigerator compartment 2
The cool air discharge air path 17 is an illuminating device provided in a space insulated from the back surface of the refrigerator compartment, and is configured to be turned on in conjunction with opening of the refrigerator compartment door 4. Reference numeral 28 denotes a machine room partitioned and formed at the lower rear of the refrigerator main body 1, reference numeral 29 denotes a compressor of a refrigeration cycle provided in the machine room 28, and reference numeral 30 denotes a condenser.

In FIG. 11, reference numeral 31 denotes a decompressor such as a capillary tube, which is provided with the compressor 29, the condenser 30, the evaporator 8, and the like.
Together with the ring to form a closed-loop refrigeration cycle.

[0010] Regarding the refrigerator configured as described above,
Next, the operation will be described.

The refrigerant compressed to a high pressure by the compressor 29 is radiated by the condenser 30 to become a liquid refrigerant, and is decompressed while passing through the decompressor 31 to absorb the heat in the cooling chamber 7 in the evaporator 8. Expands and evaporates. The vaporized refrigerant returns to the compressor 29, and this operation is repeated to cool the refrigerator.

That is, a part of the cool air generated by cooling the surrounding air by the heat absorbing action of the evaporator 8 is sent into the freezing room 3 from the cool air discharge port 15 by the blower 9, and after cooling the room, the cool air is cooled. It is returned to the cooling chamber 7 through the suction port 16. Compressor 2 until the temperature of temperature detector 24 decreases to the set value.
9. The operation of the blower 9 is continued, and then both are stopped until it rises to the set value. This operation is repeated intermittently to keep the room cooled to a predetermined value (for example, −18 ° C.).

A part of the cool air is sent into the refrigerator compartment 2 from the cool air discharge port 19 through the cool air discharge air passage 17, cools down the room, and is returned to the cooling chamber 7 through the cool air suction air passage 22 from the cool air suction port 23. It is. At this time, the damper device 13 is opened until the temperature of the temperature detector 24 falls to the set value, and then closed until the temperature rises to the set value. Is kept cool. At the same time, the vegetable compartment 10 is cooled and maintained at a predetermined value (for example, 6 ° C.) while preventing drying of the interior by indirect cooling from the outer periphery.

On the other hand, a part of the cool air is further discharged to the cool air discharge passage 2.
The cooling air is sent into the low-temperature chamber 11 from the cool air discharge port 21 through 0, and after cooling the room, it is joined to the cool air suction air passage 22 from the cool air suction port 23 and returned to the cooling chamber 7. At this time, until the temperature of the temperature detector 26 falls to the set value, the damper device 14
Is opened and then closed until it rises to the set value, and this action is repeated intermittently to set the room to a predetermined value (for example, 0
(° C).

When the door 4 of the refrigerator compartment is opened, the lighting device 27 is turned on to illuminate the interior of the refrigerator compartment 2 from the rear.

[0016]

However, in the above-mentioned conventional construction, since one chamber is cooled by one evaporator 8 and one blower 9, the cooling air flowing through the cooling chamber 2 and the cooling chamber 7 having a particularly large cooling load is cooled. Discharge air path 15 and cool air suction air path 19
However, there has been a problem that the cooling efficiency is reduced due to an increase in wind path resistance and heat loss. Furthermore, the cold air discharge air passage 15 has a large temperature difference from the inside of the refrigerator compartment 2 and requires a considerable heat insulating structure. There was also a problem of becoming smaller.

Further, it is necessary to increase the dimension of the evaporator 8 in the height direction in order to secure the cooling capacity with one evaporator 8, and as a result, the heat insulating partition wall 6 between the refrigerator compartment 2 and the freezer compartment 3 is required. There is a problem that the storage position (the central portion and the lower portion) of the refrigerator compartment 2 having a height that is easy to use is compressed and the usability is deteriorated.

Further, in order to cool a plurality of chambers having different storage temperatures with one evaporator 8, it is necessary to lower the temperature of the evaporator 8 by adjusting the design of the evaporating temperature to the freezing room 3 having the lowest temperature (for example, -30). ° C), refrigeration cycle efficiency (refrigeration capacity /
Input) and power consumption increases.

In addition, the refrigerator compartment 2, the vegetable compartment 10, and the low-temperature compartment 11, which have higher storage temperatures than the freezer compartment 3, are supplied with cold air at an unnecessarily low temperature, thereby promoting the drying of the stored food. Also, there is a problem that the storage quality of the stored food is deteriorated by causing partial supercooling near the cool air discharge ports 16 and 18.

The front part of the refrigeration compartment 2 is opened and closed by the door 4 and the door 4
Although the storage temperature tends to be high due to heat absorption due to heat absorption around the outside, the cold air discharged from the cold air discharge port 16 does not easily reach the front because the cold air discharge passage 15 is provided at the rear of the refrigerator compartment 2. The temperature unevenness in the refrigerator compartment 2 is further expanded, and the temperature in the front portion of the room is high and the temperature in the rear portion of the compartment is low,
There was also a problem that the storage quality of the stored food was not stabilized.

Further, since the lighting device 27 is provided on the rear surface in the refrigerator compartment 2, uneven illumination is caused only by lighting from the rear of the room, and the front portion is blocked especially when a large amount of food is stored. There was also an inconvenience that the lighting sometimes did not reach the room.

A first object of the present invention is to solve the above-mentioned conventional problems. A first object of the present invention is to provide a refrigerator having a refrigerator compartment at an upper portion and a freezer compartment at a lower portion. And to provide a power-saving refrigerator with high cooling efficiency.

It is a second object of the present invention to effectively secure the internal volume with a simple air path configuration.

Further, a third object of the present invention is to improve the usability of a storage area which is easily accessible by the user and is frequently used, and to improve the convenience.

A fourth object of the present invention is to improve storage quality by suppressing temperature rise, unevenness in temperature, drying, etc. of stored food.

A fifth object of the present invention is to provide a refrigerator having an efficient lighting device in a refrigerator.

[0027]

According to a first aspect of the present invention, there is provided a heat insulating partition wall for vertically partitioning the inside of a refrigerator body, a refrigerator compartment formed above the heat insulating partition wall, A vegetable compartment partitioned above the heat insulating partition wall and below the refrigerator compartment, a freezing compartment partitioned below the heat insulating wall, and a first evaporator provided in the refrigerator compartment;
A first blower provided above the first evaporator, a second evaporator provided in the freezing chamber, and a second blower provided above the second evaporator, The refrigerator compartment and the vegetable compartment are cooled by a first evaporator and a first blower, and the freezing compartment is cooled by the second evaporator and a second blower. A low-temperature chamber, which is arranged between the second evaporator and accommodates fresh food and the like, and a damper device that controls cool air sent from the second evaporator by the second blower, and controls the temperature of the low-temperature room with the damper device. The refrigerator compartment and the vegetable compartment are cooled by the first evaporator and the first blower, and the freezing compartment is cooled by the second evaporator and the second blower according to the respective storage temperatures and frozen. Cycle efficiency is increased, and cooling air passages are simplified in each room Are cooling efficiency is increased by the power consumption can be reduced.

Further, the difference in vapor pressure between the refrigerator compartment and the vegetable compartment can be reduced by the evaporator temperature which can be raised by a dedicated evaporator in accordance with the room temperature, and drying of the stored food is suppressed. The freezer compartment is also cooled independently of the refrigerator compartment by a dedicated evaporator, so that it is not directly affected by the refrigerator compartment and stable storage quality with little temperature rise can be obtained.

Further, the cooling air of the low-temperature room is supplied by the second evaporator for cooling the freezing room, and the cooling capacity of the low-temperature room is stabilized, and the cooling of the low-temperature room depends on the first evaporator having the high evaporation temperature. This prevents overcooling of the refrigerator compartment.

According to a second aspect of the present invention, there is provided a heat insulating partition wall for vertically partitioning the inside of the refrigerator main body, a refrigerator compartment formed above the heat insulating partition wall and provided with a plurality of shelves, Vegetable compartment partitioned below the refrigerator compartment at the top, and a freezer compartment partitioned below the heat insulating wall,
A door independently provided at the front of the refrigerator compartment, the vegetable compartment and the freezer compartment, a first cooling compartment provided from the upper rear to the top of the refrigerator compartment, and a vertical direction at the rear of the first cooling compartment. A first evaporator installed in the first evaporator, a first blower provided above the first evaporator, and a cool air discharge formed in an upper portion of the first cooling chamber and provided in a ceiling portion of the refrigerator compartment. An air path, a cool air discharge port formed in front of the cool air discharge air path, a machine room provided with a compressor of a refrigeration cycle at a lower rear portion of the refrigerator main body, and a rear side of the freezer room above the machine room. A second cooling chamber, a second evaporator vertically installed in the second cooling chamber, and a second blower provided above the second evaporator, The refrigerator compartment and the vegetable compartment are cooled by a first evaporator and a first blower, and the second evaporator and the second evaporator are cooled. A low-temperature chamber arranged between the vegetable compartment and the freezer compartment for storing fresh foods and the like, and cool air sent from the second evaporator by the second blower while cooling the freezing compartment with the blower. Is provided so as to control the temperature of the low-temperature chamber by the damper device, the second evaporator at the rear of the freezing room can be downsized, and the position of the heat insulating partition wall is lowered, Since the cold air discharge air passage and the first evaporator are housed in the upper rear part and the top part of the refrigerator compartment, which has been conventionally inconvenient, the usability of the frequently used storage area that is easily reachable by the user is improved.

In particular, the ineffective space at the back of the vegetable compartment is eliminated, so that the storage capacity is increased, and the usability of the vegetable compartment is improved by the easy-to-use height of the central part of the refrigerator.

Further, at a cold air temperature corresponding to the refrigerator room temperature,
Since cool air is discharged from the upper front surface of the refrigerating compartment, a rise in temperature at the front of the compartment and supercooling at the rear of the compartment are suppressed, and the storage quality is stabilized.

Further, the second evaporator for cooling the freezing room is supplied with cold air having a low evaporation temperature to stabilize the cooling capacity of the low temperature room, and the first evaporator having a high evaporation temperature depends on the cooling of the low temperature room. This prevents overcooling of the refrigerator compartment.

According to a third aspect of the present invention, in the first or the second aspect of the present invention, the low-temperature chamber has a heat insulating partition wall at the top and bottom, an air flow control panel provided with a damper device at the back, and a front part. Are formed by independent heat-insulating doors, respectively.
The convenient height allows food to be taken in and out independently, making it easy to use, and the surroundings are surrounded by a heat insulating material to increase the stability of the storage temperature. Furthermore, storing the air path control panel in the hard-to-use back part increases the storage capacity of the lower part of the refrigerator compartment.

According to a fourth aspect of the present invention, in the third aspect of the invention, the low temperature chamber is a temperature switching chamber capable of switching the temperature from a refrigeration temperature zone to a freezing temperature zone by a damper device. The food storage degree of freedom is increased in accordance with the eating habits of the person, and the ability to perform temperature switching without difficulty is obtained because the food is cooled by the second evaporator for cooling the freezer compartment.

[0036]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a refrigerator according to the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a perspective view of a refrigerator according to Embodiment 1 of the present invention, FIG. 2 is a sectional view of the refrigerator according to the embodiment, and FIG. 3 is freezing of the refrigerator according to the embodiment. It is a cycle diagram.

In FIGS. 1 and 2, reference numeral 32 denotes a refrigerator main body, which is constituted by an outer box 33 made of steel plate, an inner box 34 made of resin, and the heat insulating material 35 filled between the outer box 33 and the inner box 34. ing. Reference numeral 36 denotes a heat insulating partition wall which partitions the inside of the refrigerator main body 32 into upper and lower portions, and forms a refrigerator compartment 37 at an upper portion and a freezer compartment 38 at a lower portion. Reference numeral 39 denotes a rotatable door which is attached to the opening surface of the refrigerator compartment 37 so as to be openable and closable. Reference numeral 42 denotes a drawer-type door which is attached to an opening surface in the freezing chamber 38 so as to be openable and closable, and is configured so that the storage container 43 on the indoor side can be integrally pulled out.

Reference numeral 44 denotes a first L-shaped horizontal portion and a vertical portion extending from the top portion to the upper rear portion in the refrigerator compartment 37.
A first evaporator 45 provided in a vertical portion and a first blower 46 provided above the first evaporator 45;
Cold air inlet 47 formed below the first evaporator 45
And a cool air discharge air passage 49 provided on a horizontal portion and having a cool air discharge port 48 formed on the front surface. Reference numeral 50 denotes an illumination room which is formed on both sides of the first cooling chamber 44 in a substantially L-shape with a horizontal portion and a vertical portion separated by a partition wall 51. Lighting devices 52, 53
Is provided. Reference numeral 54 denotes a substantially L-shaped light-transmitting plate that covers the front surface of the lighting room 50 and transmits the light of the lighting devices 52 and 53.

Reference numeral 55 denotes a plurality of storage sections 56 provided at appropriate intervals in the main body side storage section 40 in the refrigerator compartment 37.
The lower end surface of the first cooling chamber 44 is installed so as to be substantially flush with one of the shelves 55.

Reference numeral 57 denotes a vegetable room provided below the main body side storage section 40 in the refrigerator compartment 37, and is provided with humidity control means 58 such as a moisture permeable membrane for maintaining the room at a high humidity. Reference numeral 59 denotes a storage room provided above the vegetable room 56.

Reference numeral 60 denotes a second cooling chamber provided at the rear of the freezing chamber 38 in a vertical direction, and has a second evaporator 6 therein.
1 and a second blower 62 provided above the second evaporator 61.

Reference numerals 63 and 64 denote the refrigerator compartment 37 and the freezer compartment 38, respectively.
This is a temperature detector that detects the temperature in the interior and maintains the temperature of each chamber at an appropriate temperature through a temperature control device (not shown). Reference numeral 65 denotes a machine room partitioned and formed at a lower rear portion of the refrigerator main body 32, reference numeral 66 denotes a refrigerating cycle compressor provided in the machine room 65, and reference numeral 67 denotes a condenser.

In FIG. 3, reference numeral 68 denotes a first decompressor such as a capillary tube, 69 denotes a switching valve provided downstream of the first decompressor 68 and switches the refrigerant flow path, and 70 denotes a branch from the switching valve 69. A second decompressor provided downstream of the apparatus. Then, the compressor 66, the condenser 67, the first decompressor 68, the switching valve 69, the first evaporator 45, and the second evaporator 61 are connected in a ring shape in this order, and the first refrigerant circuit 71 is a closed loop. Is configured. In addition, by the switching action of the switching valve 69, the gas is bypassed to the second evaporator 61 via the second decompressor 70, and the compressor 66, the condenser 67,
A second closed loop is connected in the order of the first decompressor 68, the switching valve 69, the second decompressor 70, and the second evaporator 61.
Is configured.

Regarding the refrigerator configured as described above,
Next, the operation will be described.

If the temperature detector 64 in the freezer compartment 38 is higher than the set value, the compressor 66 is operated, and the refrigerant compressed to a high pressure by the compressor 66 is radiated by the condenser 67 to become a liquid refrigerant, and becomes the first refrigerant. The pressure is reduced while passing through the pressure reducer 68 and reaches the switching valve 69. At this time, first, if the temperature detector 63 in the refrigerator compartment 37 detects a temperature higher than the set value, the switching valve 69 is switched to the first refrigerant circuit 71 side, and the refrigerant flows into the compressor 66 and the condenser 67. Circulates through the first decompressor 68, the switching valve 69, the first evaporator 45, and the second evaporator 61, and absorbs heat in the first cooling chamber 44 by the first evaporator 45. The portion expands and vaporizes, and then the second evaporator absorbs heat in the second cooling chamber and expands and vaporizes. The vaporized refrigerant returns to the compressor 66, and this operation is repeated to cool the refrigerator compartment 37 and the freezer compartment 38.

That is, the cool air generated by cooling the surrounding air by the heat absorbing action of the first evaporator 45 is supplied to the first blower 4.
Due to the forced ventilation action of 6, the air passes through the cool air discharge air passage 49 in the first cooling chamber 44 and is discharged from the cool air discharge port 48 on the front to the upper front of the refrigerator compartment 37. The discharged cool air is stored in each storage section 56 of the main body side storage section 40, the vegetable room 57, and the storage room 59.
After cooling the door storage section 41, the cooling air is returned into the first cooling chamber 44 through a cold air suction port 47 provided at the lower end of the first cooling chamber 44.

Then, the operation of the first blower 46 is continued until the temperature of the temperature detector 63 decreases to the set value, and thereafter, the operation is stopped until the temperature rises to the set value. Is kept at a predetermined value (for example, 4 ° C.).

As described above, the cooling in the refrigerating compartment 37 is not performed from a single evaporator provided in the freezing compartment through a long air passage or through a damper device as in the prior art, and the upper part of the refrigerating compartment is cooled. And a substantially L-shaped first cooling chamber 4 provided in the top portion
Since the exclusive first evaporator 45 and the cool air discharge air passage 49 are incorporated into the inside 4 for cooling, the air passage is simplified and the effective internal volume is expanded. Further, since the first cooling chamber 44 is provided at the upper rear portion and the top portion of the refrigerator compartment, which has been conventionally inconvenient, the influence on the actual internal volume is further reduced, and the frequently used storage area which is easily reachable by the user. The usability is improved.

Further, the lower end surface of the first cooling chamber 44 is
5 is provided so as to be substantially on the same plane as that of the storage compartment 56, so that there is no useless space having a halfway height that cannot be substantially used in the back part of the storage compartment 56, and the appearance is good.

The refrigerating compartment 37 has a dedicated first evaporator 4.
By providing the pressure reducing device 5, the evaporation temperature can be increased in accordance with the room temperature by appropriately setting the pressure reduction amount of the first pressure reducing device 68, and the vapor pressure difference between the room and the first evaporator 45 is reduced. Therefore, drying of the stored food is suppressed and storage quality is improved.

Further, since the cool air having a temperature closer to the room temperature is discharged from the cool air discharge port 48 provided in the upper front surface of the refrigerator compartment 37, the temperature rise in the front of the room and the excessive cooling in the rear of the room are suppressed. Conventionally, the temperature unevenness in the room where the front part is high and the rear part is low is reduced, and the storage quality is stabilized. Further, since the cooling is performed independently of the freezing compartment 38, the storage quality is improved without being affected by the temperature rise due to the defrosting of the second evaporator 61.

Further, since the drying in the refrigerator compartment 37 is suppressed, the atmosphere around the vegetable compartment 57 and the storage compartment 59 does not become low in humidity, so that the drying inside the compartment is suppressed. Therefore, the vegetable room 57 can store vegetables and fruits under high humidity conditions in combination with the humidity control action of the humidity control means 58, and the storage room 59 can also be used for divisional management of fresh foods such as meat and fish that do not like drying. Then it is convenient.

On the other hand, the cool air generated by cooling the surrounding air by the heat absorbing action of the second evaporator 61 is sent from the second cooling chamber 60 to the freezing chamber 38 by the forced ventilation action of the second blower 62.
It is discharged into. The discharged cool air cools the inside of the storage container 43 and then returns to the second cooling chamber 60. This cooling operation is performed until the temperature detector 64 is cooled to the set value. When the temperature reaches the set value, the compressor 66 and the second blower 62 are also stopped. Then, when the temperature rises to the set value, the compressor 66 and the second blower 62 are operated again, and thereafter, this operation is intermittently repeated, so that the inside of the freezing room 38 has a predetermined value (for example,-).
18 ° C.). As described above, the freezing compartment 38 is also cooled by the dedicated second evaporator 61 independently of the refrigerating compartment 37, and thus has a high storage temperature and a large storage load.
Stable storage quality without being directly affected by

Further, by using a dedicated evaporator for the freezer compartment, the size of the second evaporator at the rear of the freezer compartment can be reduced, and the position of the heat insulating partition wall 36 between the refrigerator compartment 37 and the freezer compartment 38 can be lowered. In addition, the easy-to-use height storage range (central and lower portions) in the refrigerator compartment 37 is expanded, and the usability is improved.

Next, when the temperature detector 63 of the refrigerator compartment 38 becomes lower than the set value during the operation of the compressor 66, the switching valve 69 is switched to the second refrigerant circuit 72 side, and the refrigerant is supplied to the compressor 6
6, condenser 67, first decompressor 68, switching valve 69, second
Circulates through the decompressor 70 and the second evaporator 61, and the second evaporator 61 absorbs heat in the second cooling chamber 60 and expands and vaporizes. The vaporized refrigerant returns to the compressor 66, and this circulation operation is repeated, so that only the second evaporator 61 exerts a cooling operation. Therefore, the operation of the second blower 62 and the freezing room 3
8 alone is cooled, and the temperature sensor 64 in the freezer compartment drops to the set value and the compressor 66 and the second blower 62 stop, or the temperature sensor 63 in the refrigerator compartment rises to the set value. The process is continued until it is switched to the first refrigerant circuit 71 side.

This operation is repeated intermittently to keep the inside of the freezing room 38 cooled to a predetermined value (for example, -18 ° C.). In this way, the freezing compartment 38 also sets the second decompressor 70 to an appropriate amount of pressure reduction, so that the second chamber can be cooled independently during the second cooling.
The evaporator 61 can be set at a lower evaporating temperature, and the cooling capacity can be increased by lowering the cool air temperature. Therefore, a rise in the temperature of the food stored in the freezing compartment 38 can be suppressed, and stable storage quality can be obtained.

As described above, the refrigerating room 37 is provided with the first evaporator 4.
5 and the first blower 46 and the freezer compartment 38 are provided with the second evaporator 6.
Since the first and second blowers 62 are cooled at a cool air temperature corresponding to the respective storage temperatures, the efficiency of the refrigeration cycle is increased by elevating the evaporation temperature particularly during cooling of the refrigerator compartment, and the cooling air passages are also provided in the respective compartments. Thus, the cooling efficiency is increased and the power consumption can be reduced.

In order to further increase the evaporating temperature of the first evaporator 45, the first decompressor 68 may be reduced in pressure and the second decompressor 70 may be decompressed in a larger amount. After reducing the amount of pressure reduction of the pressure reducer 68, another pressure reducer is added between the first evaporator 45 and the second evaporator 61 to lower the evaporation temperature of the second evaporator 61. Is also good. An appropriate combination and setting may be selected according to the target degree of the improvement of the efficiency of the refrigeration cycle and the improvement of the storage quality of food. Further, the switching valve 69 may be, for example, a three-way valve that selectively switches between the first refrigerant circuit 71 and the second refrigerant circuit 72. When the valve is opened, the valve almost flows to the first refrigerant circuit 71 due to a resistance difference. When closed, it may be configured to flow only to the second refrigerant circuit 72 side, and an inexpensive two-way valve may be used.

In the refrigerating room 37, the lighting devices 52 and 53 in the L-shaped lighting room 50 provided on both sides of the first cooling room 44 are turned on when the door 39 is opened.
At this time, a pair of left and right illuminating devices 52 provided in the horizontal portion irradiate light downward from the upper front surface of the refrigerator compartment 37 via the light transmitting plate 54. On the other hand, a pair of left and right illuminating devices 53 provided in the vertical portion irradiate light downward from the upper inner surface of the refrigerator compartment 37 via the light transmitting plate 54.

For this reason, the refrigerator compartment is illuminated three-dimensionally, and the unevenness of the illumination is reduced from the front to the back, and the illumination is blocked by the stored objects placed in front like the conventional lighting only from the back of the room. I don't have to. Further, since the lighting is compactly incorporated by utilizing the structure of the first cooling chamber 44, the space can be effectively used, and the appearance can be improved by the L-shaped lighting, and the assembly in the manufacturing process is easy. Can be done.

(Embodiment 2) FIG. 4 is a perspective view of a refrigerator according to Embodiment 2 of the present invention, and FIG. 5 is a sectional view of the refrigerator according to the embodiment.

In the following embodiments, portions common to the first embodiment will be omitted from the description of the first embodiment, and only different components will be described with new reference numerals.

In FIG. 4, reference numeral 73 denotes a refrigerator main body;
Reference numeral 74 denotes a first cooling chamber formed in a substantially L-shape in a horizontal portion and a vertical portion from the upper rear portion to the top portion in the refrigerator compartment 37,
A first evaporator 45 provided in a vertical portion and the first evaporator 4
5 comprises a first blower 46 provided above, a cool air inlet 47 formed below the first evaporator 45, and a cool air discharge passage 49 provided in a horizontal portion and having a cool air discharge port 48 formed on the front surface. Have been. 50 is the first cooling chamber 44
Are separated by a partition 51 on both sides of the horizontal portion and the vertical portion.
The lighting room is formed in a character shape, and a pair of left and right lighting devices 75 is provided near a bent portion of the lighting room 50. 5
Reference numeral 4 denotes a substantially L-shaped light-transmitting plate that covers the front surface of the lighting room 50 and transmits light of the lighting device 75.

In the above configuration, the door 3 of the refrigerator compartment
The lighting device 75 in the lighting room 50 provided in an L-shape on both sides of the first cooling room 74 is turned on at the time of opening the lighting room 9.
At this time, a pair of left and right illuminating devices 75 provided near the bent portion of the illuminating room 50 irradiate light downward from the upper rear part of the refrigerating room 37. Since it is provided in an L-shape over the room top surface and the upper rear surface, the refrigerator compartment 37 is three-dimensionally illuminated from the upper front surface and the upper rear surface.

For this reason, even if there is only one pair of lighting devices, the unevenness of the lighting is reduced from the front to the back in the refrigerator compartment, and the lighting is carried out by the stored object placed in front like the conventional lighting only from the back of the room. It is possible to achieve efficient and rational lighting without being interrupted. Further, since the lighting is compactly incorporated by utilizing the structure of the first cooling chamber 44, the space can be effectively used, and the appearance can be improved by the L-shaped lighting, and the assembly in the manufacturing process is easy. Can be done.

(Embodiment 3) In FIGS. 1 and 2, the temperature of the main body side storage section 40 of the refrigerator compartment 37 is set to be in a low temperature range of 0 to 3 ° C.

In such a configuration, the main body side storage section 4
All the foods stored in the storage room 59 are stored at a low temperature to enhance the storage property, and the storage room 59 is maintained at a low temperature in addition to the environment in which drying is suppressed, and is more suitable for the divided storage of meat, fish, etc., and the storage period Can be extended. In addition, since the vegetable compartment 57 is also maintained at a low temperature, most vegetables and fruits are suppressed from respiratory action and transpiration, and can be stored for a long time. As described above, fresh food such as meat, fish, and vegetables having high temperature dependency can be stored in the refrigerator compartment without using a special cooling air path configuration or a temperature control device such as a damper device.

It is possible to set the air direction of the cool air discharge port 48 to the direction of the door and to set the door storage section 41 in the same low-temperature zone. If so, it is possible to manage the temperature classification of the door storage section 41 and the main body storage section 40 which are originally high in temperature distribution by setting the wind direction closer to the main body side.

(Embodiment 4) In FIGS. 1, 2 and 3, when the refrigeration cycle circulates through the second refrigerant circuit 72 and no refrigerant flows through the first evaporator 45, or when the compressor 6
The first blower 46 is configured to operate for a predetermined time when the refrigerant is not flowing to the first evaporator 45 after the stop of the first blower 6.

In such a configuration, while the refrigerator compartment 37 is being cooled, that is, while the refrigerant is flowing into the first evaporator 45, moisture in the air from the refrigerator compartment 37 and from outside the refrigerator is removed from the first evaporator 45. When the first blower 46 is operated when the refrigerant is not flowing to the first evaporator 45, the attached frost is melted by the air in the refrigerator compartment and reduced as moisture in the air. . And this humid air is stored in the refrigerator compartment 37.
By circulating through the inside, the humidity in the refrigerator compartment 37 is kept high.

Therefore, the drying of the food stored in the refrigerator compartment 37, the vegetable compartment 57, and the storage compartment 59 is further suppressed, and the storage period can be further extended and the storage quality can be further improved.

The operation time of the first blower 46 may be determined in consideration of the necessity of humidity and the degree of influence on power consumption, and is not limited to the operation time but increases the temperature of the first evaporator 45. For example, a method of defining the value may be used.

(Embodiment 5) FIG. 6 is a perspective view of a refrigerator according to Embodiment 5 of the present invention, and FIG. 7 is a sectional view of the refrigerator according to the embodiment.

In FIGS. 6 and 7, reference numeral 76 denotes a refrigerator main body, and reference numeral 77 denotes a back plate connected to the back of the refrigerator compartment 37 by providing a step at the lower end of the first cooling compartment 74. A cool air suction air passage 78 is formed in the back space of the back plate 77 so as to extend vertically, and the upper end thereof communicates with the cool air inlet 47 of the first cooling chamber, and the lower end thereof is a rear part of the storage room 59 and the vegetable room 57. It communicates with the space. Reference numeral 79 denotes a cool air inlet formed in the back plate 77 corresponding to the storage compartment 56.

In such a configuration, the cool air discharged from the cool air discharge port 48 on the upper front surface of the refrigerator compartment 37 spreads to the lower part, cools the vegetable compartment 57 and the storage compartment 59, and is collected in the cool air suction air passage 78. The evaporator 45 is returned to the first evaporator 45. The cool air that has cooled each of the storage compartments 56 is sucked through a cool air suction port 79 at the back of the storage compartment 56, and the rear cool air suction air passage 78.
Through to the first evaporator 45.

As a result, the discharged cold air is not collected in the first cooling chamber 74 at the upper part of the refrigeration chamber 37, and the cooling operation is reliably performed to the lower part of the refrigeration chamber 37 before returning. high. Further, since the cool air circulates evenly in each of the storage sections 56 of the main body-side storage section 40, uneven cooling does not easily occur, and the storage quality of the stored food is stabilized.

Further, since the back surface of the back plate 77 is formed not in the discharge air path as in the conventional case but in the suction air path through which air having a temperature similar to the temperature of the refrigerator compartment passes, the back surface of the back plate 77 is formed. The thickness of the cold air suction air passage 78 can be reduced without requiring any heat insulating material. Therefore, infringement of the effective space in the refrigerator compartment 37 can be reduced. Since the temperature of the cold air intake air passage is close to the temperature of the refrigerator compartment, an illumination device can be provided in the air passage. This is effective when it is desired to enhance the illumination from the vicinity of the center of the refrigerator compartment to the lower part.

(Embodiment 6) FIG. 8 is a sectional view of a refrigerator according to Embodiment 6 of the present invention.

In FIG. 8, reference numeral 80 denotes a refrigerator main body;
A refrigerating room 82 is formed at the upper part and a freezing room 83 is formed at the lower part by the heat insulating partition wall 81. The first cooling chamber 74, which is formed in a substantially L-shape between a horizontal portion and a vertical portion, is provided from a top portion to an upper rear portion in the refrigerator compartment 82. Also,
In the rear part of the freezing chamber 83, the second cooling chamber 6 is vertically arranged.
0 is provided.

A low-temperature chamber 84 is provided at the bottom of the refrigeration room 82 and mainly stores fresh food such as meat, seafood and the like. Reference numeral 85 denotes a vegetable room provided in the refrigeration room 82 above the low temperature room 84, and 86 denotes an air path control panel provided behind the low temperature room 84. Then, the wind path control panel 86
And a damper device 87 that regulates the amount of cold air supplied to the low-temperature chamber 84 to maintain the room temperature at a predetermined value (for example, 0 ° C.). In the second cooling chamber 60, the second blower 62
Is provided with a cool air discharge air passage 88 communicating with the discharge side. Reference numeral 89 denotes a cool air intake air path for returning the cool air that has cooled the low temperature chamber 84 to the second evaporator 61.

Further, 90, 91 and 92 are the refrigerator compartment 8
2. A temperature detector that detects the temperatures in the freezing room 83 and the low-temperature room 84 and maintains the temperature in each room at an appropriate temperature through a temperature control device (not shown).

The refrigerator configured as described above
Next, the operation will be described.

If the temperature detector 91 of the freezing room 83 is higher than the set value, the compressor 66 is operated.
If the temperature detector 90 in the second 2 detects a temperature higher than the set value, the refrigerant circulates to the first evaporator 45 and the second evaporator 61, and the refrigerant flows through the first blower 46 and the second blower 62. The refrigerator compartment 82 and the freezer compartment 83 are cooled by the forced ventilation.

The cooling inside the refrigerator compartment 82 is performed by the first cooling compartment 74.
This is performed by discharging air from a cold air discharge port 48 on the front to the upper front surface of the refrigerating chamber 82 through a cold air discharge air passage 49 in the inside. The discharged cool air descends below the front of the refrigerator compartment and from the rear through the cool air inlet 47 to the first cooling chamber 74.
Collected inside. At this time, the vegetable room 85 is also cooled by the cooling action of the first evaporator 45 and the first blower 46 at the same time. For example, the refrigerator room 82 is maintained at 4 ° C. and the vegetable room 85 is maintained at 6 ° C.

On the other hand, the cool air cooled by the second evaporator 61 provided in the second cooling chamber 60 is discharged into the freezing chamber 83 to cool the freezing chamber 83 to, for example, -18 ° C. Then, a part of the cooled cool air is sent into the cool air discharge air passage 88 by the forced ventilation of the second blower 62. If the temperature of the temperature detector 92 in the low temperature chamber 84 is higher than the set value,
When the damper device 87 is opened and cool air is discharged, the low-temperature chamber 8 is released.
The inside of the second evaporator 6 is cooled by the cool air suction air passage 89.
Returned to 1. Thereafter, when the temperature of the temperature detector 92 decreases to the set value, the damper device 87 closes and the cooling operation stops. By repeating this operation intermittently, the inside of the low temperature chamber 37 is kept cooled to a predetermined value (for example, 0 ° C.).

As described above, since the cooling in the low temperature chamber 84 is performed based on the cooling action of the second evaporator 61 and the second blower 62 provided in the freezing chamber 83, the low evaporation for cooling the freezing chamber 84 is performed. The low-temperature cold air exchanged with the temperature can be used, and the temperature of the low-temperature chamber 84 can be easily maintained in a desired low-temperature zone. For this reason, fresh foods with high temperature dependency, such as meat and fish, can be stably stored, and the storage quality can be further improved. Further, the temperature can be set to a lower temperature than, for example, partial freezing at -3 ° C., so that fresh food can be stored for a long period of time, and the freedom of eating habits is expanded. further,
By not relying on the cooling of the low-temperature chamber 84 by the first evaporator 45 having a high evaporation temperature, it is possible to prevent the cooling time of the first evaporator 45 from being lengthened and the refrigerating chamber 82 from being overcooled more than necessary. (Embodiment 7) FIG. 9 is a sectional view of a refrigerator according to Embodiment 7 of the present invention.

In FIG. 9, 93 is a refrigerator main body,
Refrigeration room 96 provided with a rotary heat insulating door 95 at the upper part by a heat insulating partition wall 94, drawer type heat insulating door 97 at the lower part, vegetable room 99 provided with storage container 98, drawer type heat insulating door 100 at the lower part, storage A freezing room 102 having a container 101 and a low-temperature room 105 having a drawer-type heat-insulating door 103 and a storage container 104 at the upper portion thereof are formed.

Here, the first cooling chamber 74, which is formed in a substantially L-shape with a horizontal portion and a vertical portion, is provided from the top portion to the upper rear portion in the refrigerator compartment 96. Further, the second cooling chamber 60 is provided in a vertical direction at a rear portion inside the freezing chamber 102.

The low temperature room 105 and the freezer room 102
A heat insulating partition wall 106 is provided between the low temperature chambers 10 and 10.
5 is provided with an air path control panel 107 having a heat insulation structure. Inside the air path control panel 107, a damper device 108 for adjusting the supply amount of cool air to the low temperature chamber 105 to maintain the room temperature at a predetermined value (for example, 0 ° C.), and the damper device 108, The second of the freezer 102
A cooling air discharge air passage 109 communicating with the discharge side of the second blower 62 is provided in the cooling chamber 60. Also, 110
Is a cool air intake air path for returning the cool air that has cooled the low temperature chamber 105 to the second evaporator 61.

Further, 111, 112 and 113 detect the temperatures in the refrigerating room 96, the freezing room 102 and the low temperature room 105, and maintain the temperature of each room at an appropriate temperature through a temperature control device (not shown). It is a vessel.

[0092] Regarding the refrigerator configured as described above,
Next, the operation will be described.

If the temperature detector 112 in the freezer compartment 102 is higher than the set value, the compressor 66 is operated. At this time, if the temperature detector 111 in the refrigerator compartment 96 detects a temperature higher than the set value, the refrigerant Are the first evaporator 45 and the second evaporator 6
1 and the refrigerating compartment 96 and the freezing compartment 102 are cooled by the forced ventilation of the first blower 46 and the second blower 62.

The cooling in the refrigerating chamber 96 is performed by the first cooling chamber 74.
This is performed by discharging air from the cold air discharge port 48 on the front to the upper front surface of the refrigerating chamber 96 via the cold air discharge air passage 49 in the inside. The discharged cool air descends below the front of the refrigerator compartment and from the rear through the cool air inlet 47 to the first cooling chamber 74.
Collected inside. At this time, the vegetable room 99 is also cooled by the cooling action of the first evaporator 45 and the first blower 46 at the same time. For example, the refrigerator room 96 is maintained at 4 ° C. and the vegetable room 99 is maintained at 6 ° C.

On the other hand, the cool air cooled by the second evaporator 61 provided in the second cooling chamber 60 is discharged into the freezing chamber 102 to cool the freezing chamber 102 to, for example, -18 ° C. Then, a part of the cool air cooled by the second evaporator 61 is
Is blown into the cool air discharge air passage 109 by the forced ventilation action of the blower 62. Then, the temperature detector 11 in the low temperature chamber 105
If the temperature of 2 is higher than the set value, the damper device 108 is opened, cool air is discharged, and the inside of the low-temperature chamber 105 is cooled,
The air is returned to the second evaporator 61 from the cool air intake air passage 110.
Thereafter, when the temperature of the temperature detector 112 decreases to the set value, the damper device 108 closes and the cooling operation stops. By repeating this operation intermittently, the inside of the low temperature chamber 105 is cooled and maintained at a predetermined value (for example, 0 ° C.).

As described above, the cooling in the low-temperature chamber 105 is performed by the second evaporator 61 and the second blower 6 provided in the freezing chamber 102.
Since the cooling operation is performed based on the cooling operation of item 2, low-temperature cold air that has been heat-exchanged at a low evaporation temperature for cooling the freezing room can be used, and the temperature of the low-temperature room 105 can be easily maintained in a desired low-temperature zone.

The low-temperature chamber 105 is surrounded by heat-insulating partition walls 94 and 106 at the top and bottom, by the heat-insulating door 103 at the front, and by the air-path control panel 107 having heat insulation at the back, so that it can be protected from outside. Stable temperature control can be performed without being affected by heat. For this reason, fresh foods with high temperature dependency, such as meat and fish, can be stably stored, and the storage quality can be further improved. Further, the temperature can be set to a lower temperature than, for example, partial freezing at -3 ° C., so that fresh food can be stored for a long period of time, and the freedom of eating habits is expanded.

Further, by providing the independent exclusive door 103 in the low-temperature chamber 105 and using the storage container 104 by pulling it out, food can be taken in and out independently at a height that is easy to use, and the convenience is good. By storing the road control panel 107 in the back which is difficult to use, the storage of the lower part of the refrigerator compartment 96 is improved,
In the present embodiment, the depth of the vegetable room 99 can be sufficiently ensured, and the storage capacity is improved.

(Embodiment 8) In the low temperature chamber 105 shown in FIG. 9, a temperature switching device capable of switching the temperature from the refrigeration temperature zone to the freezing temperature zone by changing the opening rate of the damper device 108 with a temperature switching device such as a switch (not shown). The temperature detector 112 is selected by the user in selecting an arbitrary temperature zone.
Based on the detected temperature, the damper device 108 repeats the opening and closing operation to keep the room cooled to a desired temperature zone.

For this reason, low-temperature cold air that has been heat-exchanged at a low evaporation temperature for freezing room cooling is used because it is based on the cooling action of the second evaporator 61 and the second blower 62 provided in the freezing room 102. And a cooling capacity capable of easily switching a wide temperature range from refrigeration to freezing can be obtained. And
The degree of freedom of food storage can be increased in accordance with the user's eating habits.

[0101]

As described above, according to the first aspect of the present invention, the first compartment is formed in the refrigerator compartment by forming the refrigerator compartment and the vegetable compartment below and the freezer compartment below by the heat insulating partition wall. An evaporator and a first blower are provided, a second evaporator and a second blower are provided in a freezing room, and a refrigerator and a vegetable room are cooled by the first evaporator and the first blower, and a second evaporator is provided. The refrigerator and the second blower are configured to cool the freezing room, and are arranged between the vegetable room and the freezing room to store fresh foods and the like, and are sent from the second evaporator by the second blower. The cold room is controlled by a damper device for controlling the temperature of the cold room.
The evaporator, the first blower, and the freezing room are cooled by the second evaporator and the second blower according to the respective storage temperatures, thereby increasing the efficiency of the refrigeration cycle, and the cooling air passage is also simplified in each room. As a result, the cooling efficiency is increased and the power consumption can be reduced.

Further, since the refrigerator room and the vegetable room are provided with a dedicated first evaporator, the evaporation temperature can be raised in accordance with the room temperature, and the drying of the stored food is suppressed and the storage quality is improved.

Further, since the refrigerator compartment and the vegetable compartment are cooled independently of the freezer compartment, the storage quality is improved without being affected by the temperature rise due to the defrosting of the second evaporator.

Since the freezer compartment is also cooled by the dedicated second evaporator independently of the refrigerator compartment, the storage temperature is high and stable storage quality is not directly affected by the refrigerator compartment having a large storage load. can get.

Furthermore, low-temperature cold air that has been heat-exchanged at a low evaporation temperature for cooling the freezing room can be used, and the temperature of the low-temperature room can be easily maintained in a desired low temperature zone. For this reason,
Fresh foods with high temperature dependence, such as meat and seafood, can be stably stored, and the storage quality can be further improved.

Further, since the cooling of the low-temperature chamber does not depend on the first evaporator having a high evaporation temperature, the cooling time of the first evaporator is not made longer than necessary and the refrigerating chamber is not overcooled.

According to the second aspect of the present invention, a refrigerator room having a plurality of shelves on the upper side by a heat insulating partition wall and a vegetable room under the refrigerator room are provided.
A freezer compartment is formed at the bottom and independent doors are provided for each compartment,
A first evaporator and a first blower are provided in a vertical direction in a first cooling chamber provided from an upper rear portion to a ceiling portion of the refrigerating room, and a cool air discharge air passage is formed in an upper portion in the first cooling chamber and in a front surface. A second outlet in a vertical direction in a second cooling chamber provided with a cool air discharge port and provided in the rear of the freezing chamber above the machine room behind the lower part of the refrigerator main body;
The first evaporator and the first blower are provided.
The refrigerator is configured to cool the refrigerator compartment and the vegetable compartment with the blower, and the second evaporator and the second blower are configured to cool the freezer compartment. The low-temperature compartment is arranged between the vegetable compartment and the freezer compartment and stores fresh foods and the like. And a damper device for adjusting the cool air sent from the second evaporator by the second blower, so that the temperature of the low-temperature room is controlled by the damper device. The provision of the first cooling chambers at the rear and top portions reduces the effect on the substantial internal volume, and improves the usability of the frequently used storage range that is easily reachable by the user.

Further, by using a dedicated evaporator for the freezer compartment, the size of the second evaporator at the rear of the freezer compartment can be reduced, and the easy-to-use height storage area (central and lower portions) in the refrigerator compartment can be expanded to be convenient. Is improved.

In particular, the ineffective space at the back of the vegetable compartment is eliminated, and the storage capacity is increased, and the usability of the vegetable compartment is improved by the easy-to-use height of the central part of the refrigerator.

In addition, the temperature rise in the front part of the refrigerator compartment and the supercooling in the rear part of the compartment are suppressed, and the uneven temperature in the room where the front part is high and the rear part is low is reduced, and the storage quality is stabilized.

Furthermore, low-temperature cold air that has been heat-exchanged at a low evaporation temperature for cooling the freezing room can be used, and the temperature of the low-temperature room can be easily maintained in a desired low temperature zone. For this reason,
Fresh foods with high temperature dependence, such as meat and seafood, can be stably stored, and the storage quality can be further improved. Further, since the cooling of the low-temperature chamber is not dependent on the first evaporator having a high evaporation temperature, the cooling time of the first evaporator is not made longer than necessary and the refrigerating chamber is not overcooled.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the low-temperature chamber has a heat insulating partition wall at the top and bottom, an air path control panel provided with a damper device at the back, and a front part. Are formed by independent heat-insulating doors, respectively.
Low-temperature cold air that has been heat-exchanged at a low evaporation temperature for cooling the freezer compartment can be used, and the temperature of the low-temperature compartment can be easily maintained in a desired low temperature zone.

Further, since the periphery is surrounded by a heat insulating material, it is hardly affected by heat from the outside, and stable temperature control can be performed. For this reason, fresh foods with high temperature dependency, such as meat and seafood, can be stored for a long period of time, and the freedom of eating habits is expanded.

Furthermore, food can be taken in and out independently at a height that is easy to use, so that it is easy to use and the air path control panel is housed in a difficult-to-use deep part, so that the storage capacity at the lower part of the refrigerator compartment is enhanced.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the low-temperature chamber is a temperature switching chamber capable of switching a temperature from a refrigeration temperature zone to a freezing temperature zone by a damper device. Since the cooling is performed by the second evaporator for cooling, a cooling capacity for easily switching the temperature in a wide temperature range from refrigeration to freezing is obtained, and the degree of freedom of food storage according to the user's eating habits is increased.

[Brief description of the drawings]

FIG. 1 is a perspective view of a refrigerator according to a first embodiment of the present invention.

FIG. 2 is a sectional view of Embodiment 1 of the refrigerator according to the present invention.

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

FIG. 4 is a perspective view of Embodiment 2 of the refrigerator according to the present invention.

FIG. 5 is a sectional view of Embodiment 2 of the refrigerator according to the present invention.

FIG. 6 is a perspective view of a refrigerator according to a fifth embodiment of the present invention.

FIG. 7 is a sectional view of Embodiment 5 of the refrigerator according to the present invention.

FIG. 8 is a sectional view of Embodiment 6 of the refrigerator according to the present invention.

FIG. 9 is a sectional view of Embodiment 7 of the refrigerator according to the present invention.

FIG. 10 is a sectional view of a conventional refrigerator.

FIG. 11 is a refrigeration cycle diagram of a conventional refrigerator.

[Explanation of symbols]

 32 Refrigerator body 36 Insulated partition wall 37 Refrigerator room 38 Freezer room 40 Main body side storage unit 44 First cooling room 45 First evaporator 46 First blower 48 Cold air discharge port 49 Cold air discharge air passage 50 Lighting room 52, 53 Illumination device 54 Translucent plate 55 Shelf 57 Vegetable room 60 Second cooling room 61 Second evaporator 62 Second blower 66 Compressor 67 Condenser 68 First decompressor 69 Switching valve 70 Second decompressor 71 1st refrigerant circuit 72 2nd refrigerant circuit 74 1st cooling room 75 Illumination device 78 Cold air intake airway 79 Cold air intake 81 Insulated partition wall 82 Refrigeration room 83 Freezing room 84 Low temperature room 87 Damper device 92 Temperature of low temperature room Detector 94 Insulated partition wall 96 Refrigerator room 102 Freezer room 103 Insulated door 105 Low temperature room 106 Insulated partition wall 107 Air flow control panel 108 Damper device 113 Temperature of low temperature room Detector

Claims (4)

[Claims] 1. An insulated partition wall for vertically dividing the inside of a refrigerator main body, a refrigerator compartment defined above the thermal insulation partition wall, and a refrigerator compartment defined above the thermal insulation partition wall and below the refrigerator compartment. A vegetable compartment, a freezing compartment partitioned below the heat-insulating wall, and a first evaporator provided in the refrigerator compartment;
A first blower provided above the first evaporator, a second evaporator provided in the freezing chamber, and a second blower provided above the second evaporator, The refrigerator compartment and the vegetable compartment are cooled by a first evaporator and a first blower, and the freezing compartment is cooled by the second evaporator and a second blower. A low-temperature chamber, which is arranged between the second evaporator and accommodates fresh food and the like, and a damper device that controls cool air sent from the second evaporator by the second blower, and controls the temperature of the low-temperature room with the damper device. Refrigerator configured to do so. 2. A heat-insulating partition wall for vertically partitioning the inside of a refrigerator main body, a refrigerator compartment having a plurality of shelves formed above the thermal insulation partition wall, and a lower portion of the refrigerator compartment above the heat-insulation partition wall. , A freezer compartment defined below the heat insulating wall, a door provided independently at the front of the refrigerator compartment, the vegetable compartment and the freezer compartment, and an upper rear portion of the refrigerator compartment. A first cooling chamber provided to the top,
A first evaporator vertically installed at the rear of the cooling chamber of the first, and a first blower provided above the first evaporator,
A cool air discharge air passage formed at an upper portion of the first cooling chamber and provided at a ceiling portion of the refrigerator compartment, a cool air discharge port formed at a front surface of the cool air discharge air passage, and a lower rear portion of the refrigerator main body. A machine room provided with a compressor of a refrigeration cycle, a second cooling room provided above the machine room and behind the freezing room, and a second evaporator vertically installed in the second cooling room And a second blower provided above the second evaporator, wherein the first evaporator and the first blower cool the refrigerator compartment and the vegetable compartment, and the second evaporator And a second blower for cooling the freezer compartment, and a low-temperature compartment arranged between the vegetable compartment and the freezer compartment for storing fresh foods and the like, and the second evaporator sends air from the second evaporator to the second blower. A damper device is provided for adjusting the temperature of the low-temperature chamber. Refrigerator that is configured to control. 3. The low-temperature chamber according to claim 1, wherein the upper and lower portions are formed by heat insulating partition walls, the inner portion is formed by an air path control panel provided with a damper device, and the front portion is formed by independent heat insulating doors. refrigerator. 4. The refrigerator according to claim 3, wherein the low temperature chamber is a temperature switching chamber capable of switching a temperature from a refrigeration temperature zone to a freezing temperature zone by a damper device.