JP3478795B2 - refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator having high cooling efficiency, internal volume efficiency and lighting efficiency and being excellent in storage qualities and usability, in regard to the refrigerator provided with a refrigerating chamber in the upper part and a freezing chamber in the lower. SOLUTION: The refrigerating chamber 37 is cooled down by providing a first evaporator 45 and a first blower 46 in a first cooling chamber 74 provided in the shape of a letter L practically in the ceiling part and the upper rear part inside the chamber. The freezing chamber 38 is cooled down by a second evaporator 61 and a second blower 62 and thereby cooling efficiency is enhanced, while internal volume efficiency is enhanced by a simple air passage. Besides, it is possible to miniaturize the second evaporator 61 and to lower the position of a heat insulating section wall 36, and thereby the usability of a storing sphere having high frequency of use is improved. In the refrigerating chamber 37, drying of food is suppressed by the cooling by the first evaporator 45 of high evaporation temperature, while the nonuniformity of temperature in the front and the rear inside the chamber is eliminated by discharge of cooled air from the front of the first cooling chamber 74, thereby enhancing storage qualities. Besides, the inside of the refrigerating chamber 37 is lighted with easiness to see three-dimensionally by a pair of lighting units 75 provided in a bent part of a substantially L-shaped lighting chamber 50 provided in the first cooling chamber 74.

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 refrigerating room at the top and a freezing room at the bottom.

[0002]

2. Description of the Related Art In recent years, refrigerators are provided with storage chambers controlled at a plurality of temperatures according to the food they contain. conventionally,
The mainstream was a freezer room in the upper part, a refrigerating room in the center, and a vegetable room in the lower part, but recently, with emphasis on ease of use,
A refrigerator with a refrigerating room at the top and a freezer or vegetable room at the center and a lower room has been proposed and has become the mainstream. Among these, as a conventional example, there is one disclosed in Japanese Patent Laid-Open No. 5-71850.

The conventional refrigerator will be described below 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 refrigerating room provided at the upper part of the main body 1, 3 is a freezing room provided at the lower part, and 4 is openable and closable at the front opening of the refrigerating room 2. The attached door 5 is a door attached to the front opening of the freezing compartment 3 so as to be openable and closable, and 6 is a heat insulating partition wall that partitions and forms the refrigerating compartment 2 and the freezing compartment 3. Reference numeral 7 denotes a cooling chamber provided in the rear portion of the freezing chamber 3, which is internally provided with an evaporator 8 for a refrigeration cycle and a blower 9 for forced circulation.

Reference numeral 10 is a vegetable compartment provided in the lower part of the refrigerating compartment 2, and 11 is a low temperature compartment for storing fresh food such as meat and seafood. Reference numeral 12 is an air passage control panel provided behind the vegetable compartment 10 and the low temperature compartment 11, and inside the refrigerating compartment 2
Adjust the amount of cold air supplied to the room to keep the room temperature at a specified value (for example, 4
Damper device 13 for maintaining the temperature in the low temperature chamber 11
Adjust the amount of cold air supplied to the room to keep the room temperature at a specified value (for example, 0
A damper device 14 for maintaining the temperature at (° C.) is provided.

Reference numeral 15 is a cold air discharge port from the cooling chamber 7 to the freezing chamber 3, and 16 is a cold air suction port from the freezing chamber 3 to the cooling chamber 7. Reference numeral 17 denotes a back plate 18 which is provided at a rear portion of the refrigerating chamber 2 so as to extend from the cooling chamber 7 to the damper device 1
A cold air discharge air passage communicating with the refrigerating compartment 2 via 3;
Is a cold air discharge port that opens into the refrigerating chamber 2 from the cold air discharge air passage 17. Reference numeral 20 denotes a cold air discharge air passage communicating from the cooling chamber 7 to the low temperature chamber 11 via the damper device 14, and 21 denotes a cold air discharge air passage 20 to the low temperature chamber 11
It is a cold air discharge port that opens to the. Reference numeral 22 is a cold air suction air passage communicating from the refrigerating compartment 2 to the cooling compartment 7. Two
Reference numeral 3 denotes a cold air suction port of the cold air suction air passage 22 opened in the refrigerating compartment 2, which is provided at a rear portion of the vegetable compartment 10 to cool the cool air in the refrigerating compartment 2, the vegetable compartment 10 and the low temperature compartment 11. It is configured to inhale.

Reference numerals 24, 25 and 26 are temperature detectors for detecting the temperatures in the refrigerating room 2, the freezing room 3 and the low temperature room 11 respectively and maintaining the temperature of each room at an appropriate temperature through a temperature control device (not shown). Is. 27 is a back plate 18 of the refrigerating compartment 2
The cold air discharge air passage 17 is an illuminating device provided in a space which is insulated from the back air space, and is configured to be lit in conjunction with opening the door 4 of the refrigerating compartment. Further, 28 is a machine room partitioned and formed in the lower rear part of the refrigerator body 1, 29 is a compressor of a refrigeration cycle provided in the machine room 28, and 30 is a condenser.

Further, in FIG. 11, reference numeral 31 is a decompressor such as a capillary tube, which comprises the compressor 29, the condenser 30, and the evaporator 8.
Together with this, they are connected in a loop to form a closed loop refrigeration cycle.

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, which is decompressed while passing through the pressure reducer 31 and absorbs the heat in the cooling chamber 7 in the evaporator 8. It expands and vaporizes. The vaporized refrigerant returns to the compressor 29, and this operation is repeated to cool the inside of the refrigerator.

That is, the cool air generated by cooling the surrounding air by the heat absorbing action of the evaporator 8 is partly blown into the freezer compartment 3 from the cool air discharge port 15 by the blower 9 to cool the room and then cool the air. It is returned to the cooling chamber 7 through the suction port 16. Until the temperature of the temperature detector 24 drops to the set value, the compressor 2
9. The blower 9 continues to be operated, and then both are stopped until it rises to a set value, and this operation is repeated intermittently to keep the inside of the room cooled to a predetermined value (for example, -18 ° C).

Further, a part of the cool air is sent into the refrigerating chamber 2 through the cool air discharge port 17 through the cool air discharge port 19, and after cooling the room, is returned to the cooling chamber 7 through the cool air suction port 23 through the cool air suction air route 22. Be done. At this time, the damper device 13 is opened until the temperature of the temperature detector 24 drops to the set value, and then closed until it rises to the set value, and this operation is repeated intermittently to bring the room to a predetermined value (for example, 4 ° C.). Kept cool. In addition, the vegetable compartment 10 is cooled and maintained at a predetermined value (for example, 6 ° C.) while preventing the interior of the vegetable compartment from being dried by indirect cooling from the outer periphery.

On the other hand, a part of the cold air is the cold air discharge air passage 2
It is sent to the low temperature chamber 11 through the cold air discharge port 21 through 0, cools the chamber, merges with the cold air suction air passage 22 through the cold air suction port 23, and is returned to the cooling chamber 7. At this time, the damper device 14 is operated until the temperature of the temperature detector 26 drops to the set value.
Is opened and then closed until it rises to a set value, and this action is repeated intermittently to bring the room to a predetermined value (for example, 0
C.) is kept cooling.

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

[0016]

However, in the above-mentioned conventional configuration, in order to cool all the chambers by one evaporator 8 and blower 9, the cold air which connects the refrigerating chamber 2 and the cooling chamber 7 with a particularly large cooling load is communicated. Discharge air passage 15 and cold air intake air passage 19
However, there is a problem in that the cooling efficiency is reduced due to an increase in air passage resistance and heat loss. Further, since the cold air discharge air passage 15 has a large temperature difference from the inside of the refrigerating chamber 2, a considerable heat insulating structure is required. Therefore, the volume consumed in the air passage is increased and the effective inner volume for storing food is increased. There was also the problem of becoming smaller.

Further, in order to secure the cooling capacity in one evaporator 8, it is necessary to increase the size of the evaporator 8 in the height direction, and as a result, the heat insulating partition wall 6 between the refrigerating compartment 2 and the freezing compartment 3 is to be formed. There is a problem that the storage position (the central portion and the lower portion) of the refrigerating compartment 2 having a height that is easy to use is compressed due to the higher position 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 design the evaporation temperature of the evaporator 8 to match the temperature of the freezing chamber 3 having the lowest temperature (for example, -30). ℃), refrigeration cycle efficiency (refrigeration capacity /
However, there is a problem that the input power decreases and the power consumption increases.

Further, the cold air having a storage temperature higher than that of the freezing room 3, the vegetable room 10 and the low temperature room 11 are supplied with cold air having a lower temperature than necessary, thereby promoting the drying of the stored food. There is a problem that the storage quality of the stored food is deteriorated by causing partial supercooling in the vicinity of the cool air discharge ports 16 and 18.

In the front part of the refrigerating compartment 2, the door 4 is opened and closed and the door 4 is opened.
Although the storage temperature tends to be high due to the heat absorption from the surroundings, the cold air discharge air passage 15 is provided in the rear part of the refrigerating compartment 2 so that the cool air discharged from the cool air discharge port 16 does not easily reach the front part. , The temperature unevenness in the refrigerating compartment 2 is further expanded, and the temperature is high in the front part of the room and low in the rear part of the room,
There is also a problem that the storage quality of stored food is not stable.

Further, since the illumination device 27 is provided on the back surface of the refrigerating compartment 2, uneven illumination is caused only by the illumination from the rear of the compartment, and the front is obstructed especially when a large amount of food is stored. There was also the inconvenience that the lighting might not reach the room.

The present invention is to solve the above-mentioned conventional problems. A first object of the present invention is to provide a refrigerating chamber in the upper portion and a freezing chamber in the lower portion, and an appropriate refrigerating cycle constitution and a simple air passage constitution. It is to provide a power-saving refrigerator with high cooling efficiency.

A second object of the present invention is to effectively secure the internal volume with a simple air passage structure.

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

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

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

[0027]

In order to achieve this object, the refrigerator according to the present invention has a refrigerating compartment at the upper part of the body and a freezing compartment at the lower part of the body, which are formed by an insulating partition wall, and are formed at the upper rear part of the refrigerating compartment. A first evaporator vertically installed above the refrigerating chamber in the first L-shaped first cooling chamber provided at the top, a first blower provided above the first evaporator, and a first cooling chamber inside the first cooling chamber A cool air discharge air passage formed in the upper part and having a cool air discharge port only on the front surface, a machine room behind the main body and equipped with a compressor of the refrigeration cycle, and above the machine room and provided behind the freezing room It is composed of a second evaporator vertically installed in the second cooling chamber and a second blower provided above the second evaporator.

As a result, it is possible to provide a power-saving refrigerator having a high cooling efficiency and a refrigerator having a high internal volume with an appropriate refrigeration cycle configuration and a simple air passage configuration. In addition, it is possible to improve the usability of the storage range that is frequently used in the height direction and improve the convenience. In addition, the storage quality can be improved by suppressing the temperature rise of the stored food, the temperature unevenness before and after the inside of the refrigerator, and the drying.

Further, the refrigerator of the present invention has a substantially L-shape which is provided on both sides of the first cooling chamber and which is covered with a light-transmitting plate which is formed separately from the first evaporator and the cool air discharge air passage. Shaped lighting room,
It is composed of at least a pair of lighting devices provided in the lighting room.

As a result, uneven lighting in the refrigerating room is reduced, and the room is illuminated easily regardless of the food storage state.

[0031]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention comprises: a heat insulating partition wall for partitioning a refrigerator main body into upper and lower parts;
A partition wall is formed on the upper part of the refrigerator body by an insulating partition wall.
A refrigerator room with multiple shelves and a compartment at the bottom of the refrigerator body.
Imaged freezer compartment and the upper rear part of the refrigerator compartment to the top
And is formed in a substantially L-shape with the vertical and horizontal parts.
And a vertical portion in the first cooling chamber
The first steamer installed at the upper rear part of the refrigerating room
Generator and first blower provided above the first evaporator
And the cooling formed in the horizontal portion of the first cooling chamber.
Cold air discharge air passage provided at the top of the warehouse and the cold air discharge air
It is formed only on the front side of the passage and cools the upper front side of the refrigerating chamber.
The cool air discharge port that discharges the
There is a machine room equipped with a compressor for the refrigeration cycle, and the machine
A second cooling chamber above the machine room, behind the freezer compartment, and in front
The second evaporator installed vertically in the second cooling chamber.
And a second blower provided above the second evaporator.
The refrigerating compartment is provided with the first evaporator and the first blower, and the freezing compartment is cooled with the second evaporator and the second blower in accordance with the respective storage temperatures to enhance the efficiency of the refrigeration cycle. Further, the cooling air passage is also simplified in each room to improve the cooling efficiency and reduce the power consumption.

Further, the air passage is simplified and the effective internal volume is expanded. In addition, the second evaporator in the rear part of the freezer can be downsized, and the position of the heat insulation partition wall can be lowered, and the first evaporator is installed in the upper rear part of the refrigerating room and the cool air discharge air passage is installed in the top part which is not convenient to use. As a result, the user-friendly height of the storage range is improved and the usability of the storage range is improved.

In the refrigerating room, the vapor pressure difference is reduced by the amount that the evaporation temperature can be raised by a dedicated evaporator according to the room temperature.
The drying of the stored food is also suppressed. Further, since the cold air is discharged from only the upper front surface of the refrigerating compartment at a cool air temperature corresponding to the refrigerating compartment temperature, the temperature rise in the front part of the room and the supercooling of the rear part of the room are suppressed, and the storage quality is stabilized. Further, since the freezer compartment is also cooled independently of the refrigerating compartment by a dedicated evaporator, stable storage quality with less temperature rise can be obtained without being directly affected by the refrigerating compartment.

According to a second aspect of the present invention, the inside of the refrigerator main body is
Insulation partition wall divided into upper and lower parts, and above the insulation partition wall
A refrigerating room having a plurality of shelves formed into a compartment, and the heat insulation section
Vegetables partitioned above the wall and below the refrigerator
A chamber and a freezer compartment formed below the heat insulating wall,
Provided independently in front of the refrigerator compartment, vegetable compartment and freezer compartment
The door and the upper part of the refrigerating room from the top to the top
A first cooling chamber formed in a substantially L shape with a vertical portion and a horizontal portion
And the cooling provided in the vertical portion in the first cooling chamber.
A first evaporator installed in the upper rear part of the storage compartment;
A first blower provided above the evaporator of the
It is formed on the horizontal part of the cooling room and installed on the top of the refrigerating room.
Formed only on the cold air discharge air passage and on the front surface of the cold air discharge air passage.
Cold air discharge that discharges cold air to the front of the upper part of the refrigerating chamber
An outlet and a freezer cycle at the bottom rear of the refrigerator body
Machine room equipped with a compressor and a freezer above the machine room.
A second cooling chamber provided at the rear of the chamber, and the second cooling chamber
A second evaporator installed vertically in the
A first blower provided above the blower,
Of the refrigerator compartment and the vegetable compartment with an evaporator and a first blower
Cool and freeze with the second evaporator and second blower.
The refrigerating 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 their respective storage temperatures. As a result, the efficiency of the refrigeration cycle is increased, and at the same time, the vapor pressure difference in the refrigerating compartment and the vegetable compartment can be raised by the dedicated evaporator in accordance with the room temperature, so that the vapor pressure difference is reduced and the drying of the stored food is also suppressed.

Further, the first cooling chamber is integrated in the upper part of the refrigerating chamber,
It simplifies and eliminates the invalid space in the back of the vegetable compartment to expand the storage volume, and improves the usability of the vegetable compartment by providing an independent door at the height of the central part of the refrigerator.

According to a third aspect of the present invention, in the invention according to the first or second aspect, the temperature of at least the main body side storage section in the refrigerating chamber is set to a low temperature range of 0 to 3 ° C. The storage of fresh foods such as fish, meat, and vegetables, which have high temperature dependence, can be performed in the refrigerating room without using a special cooling air passage structure or a temperature control device such as a damper device.

According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the first blower is operated even when the refrigerant does not circulate in the first evaporator. With such a configuration, the frost on the first evaporator is melted by the air in the refrigerating chamber during the circulation of the refrigerant and is returned to the room, whereby the humidity in the refrigerating chamber is increased.

According to a fifth aspect of the present invention, in the invention according to the first aspect, the second aspect, or the fourth aspect, the compressor, the condenser, the first pressure reducer, the switching valve, the first evaporator, A first refrigerant circuit in which a second evaporator is annularly connected, and a bypass between the switching valve of the refrigerant circuit and the first pressure reducer via the second pressure reducer to the second evaporator. However, the compressor, the condenser, the first pressure reducer, the switching valve, the second pressure reducer, and the second evaporator are provided with a refrigeration cycle that constitutes a second refrigerant circuit connected in an annular manner. The switching of the cooling circuit between the refrigerating chamber and the freezing chamber can be easily performed with a single switching valve, and the evaporation temperature of the first evaporator is increased by setting the decompression amount of the first and second decompressors, and the discharge cold air temperature of the refrigerating chamber can be increased. And the difference between the set room temperature and the room temperature can be reduced.

[0039]

Embodiments of the 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 a refrigerator according to the same embodiment, and FIG. 3 is a refrigeration cycle diagram of the refrigerator according to the same embodiment. .

In FIGS. 1 and 2, reference numeral 32 denotes a refrigerator main body, which is composed of an outer box 33 made of a 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 that partitions the inside of the refrigerator body 32 into upper and lower parts, and defines a refrigerating room 37 in the upper part and a freezing room 38 in the lower part. Reference numeral 39 denotes a rotary door which is attached to the opening surface of the refrigerating chamber 37 so as to be openable and closable, and a door storage portion 41 is provided on the indoor side thereof so as to face the main body side storage portion 40. Reference numeral 42 is a drawer-type door that is attached to the opening surface of the freezer compartment 38 so as to be openable and closable, and is configured so that the indoor storage container 43 can be integrally withdrawn.

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

Reference numeral 55 designates a plurality of storage compartments 56 provided in the main body side storage portion 40 in the refrigerating compartment 37 at appropriate intervals.
The first cooling chamber 44 has a lower end surface that is substantially flush with one of the shelves 55.

Reference numeral 57 denotes a vegetable compartment provided below the main body side accommodating portion 40 in the refrigerating compartment 37, and is provided with a humidity adjusting means 58 such as a moisture permeable film for keeping the inside of the refrigerator at high humidity. Reference numeral 59 is a storage room provided above the vegetable room 56.

Reference numeral 60 denotes a second cooling chamber vertically provided in the rear portion of the freezing chamber 38, and has a second evaporator 6 inside.
1 and a second blower 62 provided above the second evaporator 61.

63 and 64 are the refrigerating room 37 and the freezing room 38.
It is a temperature detector that detects the temperature inside and maintains the temperature of each room at an appropriate temperature through a temperature control device (not shown). Further, reference numeral 65 is a machine room defined in the lower rear part of the refrigerator main body 32, 66 is a compressor of the refrigeration cycle provided in the machine room 65, and 67 is a condenser.

Further, in FIG. 3, 68 is a first pressure reducer such as a capillary tube, 69 is a switching valve provided downstream of the first pressure reducer 68 for switching the refrigerant flow path, and 70 is branched from the switching valve 69. Is a second pressure reducer provided downstream. Then, the compressor 66, the condenser 67, the first pressure reducer 68, the switching valve 69, the first evaporator 45, and the second evaporator 61 are annularly connected in this order to form a closed loop first refrigerant circuit 71. Is configured. Further, by the switching action of the switching valve 69, the bypass valve 69 is bypassed to the second evaporator 61 via the second pressure reducer 70, and the compressor 66, the condenser 67,
The second closed loop second in which the first pressure reducer 68, the switching valve 69, the second pressure reducer 70, and the second evaporator 61 are annularly connected in this order
Of the refrigerant circuit 72.

With respect to the refrigerator configured as described above,
Next, the operation will be described.

If the temperature detector 64 of 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, which is the first refrigerant. While passing through the pressure reducer 68, the pressure is reduced 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 is the compressor 66 and the condenser 67. , The first decompressor 68, the switching valve 69, the first evaporator 45, and the second evaporator 61, and the first evaporator 45 absorbs the heat in the first cooling chamber 44. The part 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 refrigerating chamber 37 and the freezing chamber 38.

That is, the cold air generated by cooling the ambient air by the heat absorbing action of the first evaporator 45 is the first blower 4
By 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 surface to the upper front surface of the refrigerating chamber 37. The discharged cool air is stored in each storage compartment 56 of the main body side storage unit 40, the vegetable compartment 57, the storage compartment 59.
After cooling the door storage portion 41, it is returned to the inside of the first cooling chamber 44 through the cold air suction port 47 provided at the lower end of the first cooling chamber 44.

The operation of the first blower 46 is continued until the temperature of the temperature detector 63 falls to the set value, and then stopped until it rises to the set value, and this operation is repeated intermittently to repeat the operation of the refrigerating chamber 37. The inside of the room is cooled and maintained at a predetermined value (for example, 4 ° C.).

As described above, the inside of the refrigerating chamber 37 is not cooled from the conventional evaporator provided in the freezing chamber through the long air passage and through the damper device as in the conventional case. And a substantially L-shaped first cooling chamber 4 provided at the top
Since the dedicated first evaporator 45 and the cool air discharge air passage 49 are incorporated in the inside of the cooling unit 4 for cooling, the air passage is simplified and the effective internal volume is expanded. In addition, since the first cooling chamber 44 is provided in the upper rear portion and the top portion of the refrigerating chamber, which has conventionally been inconvenient to use, the effect on the inner volume is further reduced, and the storage range that is frequently used and is easily accessed by the user. The usability of is improved.

Further, the lower end surface of the first cooling chamber 44 is the shelf 5
Since it is provided so as to be substantially on the same plane as 5, there is no needlessly made useless space of a halfway height in the back part of the storage compartment 56, and the appearance is good.

Further, the refrigerating room 37 is provided with the first evaporator 4 for exclusive use.
5, the evaporation temperature can be increased in accordance with the room temperature by appropriately setting the decompression amount of the first decompressor 68, and the vapor pressure difference between the room and the first evaporator 45 can be reduced. Therefore, the stored food is prevented from drying and the storage quality is improved.

Further, since the cool air having a temperature closer to the room temperature than the conventional one is discharged from the cool air discharge port 48 provided in the upper front surface of the refrigerating room 37, temperature rise in the front part of the room and supercooling of the rear part of the room are suppressed. Therefore, the temperature unevenness in the room, which is conventionally high in the front part and low in the rear part, is reduced, and the storage quality is stabilized. Furthermore, since it is cooled independently of the freezer compartment 38, the storage quality is improved without being affected by the temperature rise due to defrosting of the second evaporator 61.

Further, since the inside of the refrigerating room 37 is suppressed from being dried, the atmosphere around the vegetable room 57 and the storage room 59 does not have a low humidity and the inside of the room is suppressed from being dried. Therefore, the vegetable compartment 57 can store vegetables and fruits under the high humidity condition in combination with the humidity regulating function of the humidity regulating means 58, and the storage compartment 59 is also used for classification management of fresh foods such as meat and fish that do not like being dried. It will be convenient.

On the other hand, the cold air generated by cooling the surrounding air by the heat absorbing action of the second evaporator 61 causes the forced air blowing action of the second blower 62 to move the cold air from the second cooling chamber 60 to the freezing chamber 38.
Is discharged inside. The discharged cool air cools the inside of the storage container 43 and is then returned to the second cooling chamber 60. This cooling action is performed until the temperature detector 64 is cooled to the set value, and when the set value is reached, 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 repeated intermittently and the inside of the freezer compartment 38 reaches a predetermined value (for example, −).
Cooling is maintained at 18 ° C. In this way, the freezer compartment 38 is also cooled independently of the refrigerating compartment 37 by the dedicated second evaporator 61, so that the refrigerating compartment 37 has a high storage temperature and a large storage load.
Stable storage quality can be obtained without being directly affected by.

Further, by using the evaporator exclusively for the freezing compartment, the second evaporator at the rear part of the freezing compartment can be downsized, and the position of the heat insulation partition wall 36 between the refrigerating compartment 37 and the freezing compartment 38 can be lowered. The storage range (center portion and lower portion) of the refrigerating room 37 at a height that is easy to use is expanded, and usability is improved.

Next, when the temperature detector 63 of the refrigerating chamber 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 compressed by the compressor 6.
6, condenser 67, first pressure reducer 68, switching valve 69, second
It 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 it. The vaporized refrigerant returns to the compressor 66 and repeats this circulation action so that only the second evaporator 61 exerts a cooling action. Therefore, the freezer 3 is operated at the same time as the operation of the second blower 62.
Only 8 is cooled alone, the temperature detector 64 in the freezer drops to the set value and the compressor 66 and the second blower 62 stop, or the temperature detector 63 in the cold store rises to the set value. The process is continued until it is switched to the first refrigerant circuit 71 side.

By repeating this action intermittently, the inside of the freezing chamber 38 is cooled and maintained at a predetermined value (for example, -18 ° C). As described above, the freezing chamber 38 is also set to the second decompressor 70 by appropriately setting the decompression amount of the second decompressor 70, and thus the second decompressor 70 is not cooled during the single cooling.
The evaporation temperature of the evaporator 61 can be set lower, and the cooling temperature can be lowered to enhance the cooling capacity. Therefore, the temperature rise of the food stored in the freezer compartment 38 can be suppressed and stable storage quality can be obtained.

As described above, the refrigerating chamber 37 is provided with the first evaporator 4
5 and the first blower 46, the freezer compartment 38 is the second evaporator 6
Since the first and second blowers 62 are cooled to the cool air temperature corresponding to the respective storage temperatures, the evaporation temperature can be increased particularly when cooling the refrigerating chamber, so that the efficiency of the refrigeration cycle is increased and the cooling air passages are also provided in the respective chambers. It is possible to reduce the power consumption by increasing the cooling efficiency.

In order to further raise the evaporation temperature of the first evaporator 45, a combination may be adopted in which the pressure reduction amount of the first pressure reducer 68 is reduced and the pressure reduction amount of the second pressure reducer 70 is increased. After reducing the decompression amount of the decompressor 68, another decompressor is added between the first evaporator 45 and the second evaporator 61 to lower the evaporation temperature of the second evaporator 61. Good. Appropriate combinations and settings may be selected according to the target degree of improving the efficiency of the refrigeration cycle and improving 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, and when the valve is open, it flows almost to the first refrigerant circuit 71 side due to the resistance difference, An inexpensive two-way valve may be used so that it flows only to the second refrigerant circuit 72 side when closed.

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

Therefore, the refrigerating room is three-dimensionally illuminated, and the unevenness of the illumination from the front surface to the back surface is reduced, and the illumination is blocked by the storage items placed in the front like the conventional lighting only from the back surface of the room. It doesn't get lost. Since the structure of the first cooling chamber 44 is used to compactly incorporate the illumination, the space can be effectively utilized, the L-shaped illumination has a good appearance, and the assembly in the manufacturing process is easy. You can do it.

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

As for the subsequent embodiments, the first embodiment will be described.
The description of the first embodiment will be omitted for the parts common to the above, and only different configurations will be described with new reference numerals.

In FIG. 4, 73 is 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 refrigerating chamber 37,
The first evaporator 45 and the first evaporator 4 provided in the vertical portion
5, a first air blower 46, a cool air suction port 47 formed below the first evaporator 45, and a cool air discharge air passage 49 having a cool air discharge port 48 formed on the front surface in a horizontal portion. Has been done. Further, 50 is the first cooling chamber 44.
Is separated by partition walls 51 on both sides of the
The illumination chamber is formed in a character shape, and a pair of left and right illumination devices 75 are provided near the bent portion of the illumination chamber 50. 5
Reference numeral 4 is a substantially L-shaped translucent plate that covers the front surface of the illumination chamber 50 and transmits the light of the illumination device 75.

With the above-described structure, the refrigerator compartment door 3
At the same time when 9 is opened, the illumination device 75 in the illumination chamber 50 provided in the L-shape on both sides of the first cooling chamber 74 is turned on.
At this time, the pair of left and right lighting devices 75 provided in the vicinity of the bent portion of the lighting room 50 radiate light downward from the upper rear part of the refrigerating room 37, but the translucent plate 54 refrigerates from the installation position of the lighting device 75. Since it is provided in an L shape extending from the top surface of the room to the upper surface of the upper room, the refrigerating room 37 is illuminated three-dimensionally from the upper front surface and the upper room.

Therefore, even if there is only one pair of lighting devices, the unevenness of the illumination from the front surface to the inner surface of the refrigerating room is reduced, and the illumination is performed by the stored object placed in the front like the conventional illumination only from the inner surface of the refrigerating room. Highly efficient and rational lighting is possible without being blocked. Since the structure of the first cooling chamber 44 is used to compactly incorporate the illumination, the space can be effectively utilized, the L-shaped illumination has a good appearance, and the assembly in the manufacturing process is easy. You can do it.

(Embodiment 3) In FIGS. 1 and 2, the temperature setting of the main body side accommodating portion 40 of the refrigerating chamber 37 is set to a low temperature range of 0 to 3 ° C.

In such a structure, the main body side storage section 4
All foods stored in 0 are stored at low temperature to enhance the storability, and the storage room 59 is kept at a low temperature in addition to the environment where drying is suppressed, and is more suitable for the divided storage of meat, fish, etc. Can be extended. Further, since the vegetable compartment 57 is also maintained at a low temperature, most vegetables and fruits are suppressed in respiratory action and transpiration action and can be stored for a long period of time. As described above, fresh foods such as meat, fish and vegetables having high temperature dependency can be stored in the refrigerating room without using a special cooling air passage structure or a temperature control device such as a damper device.

It is possible to set the wind direction of the cool air discharge port 48 toward the door and set the door storage portion 41 to the same low temperature zone, but it is necessary to take care not to reduce the temperature of the beverage or the like directly to the mouth too much. In this case, by setting the wind direction toward the main body side, it is possible to manage the temperature classification of the door storage section 41 and the main body side storage section 40, which are originally high in temperature distribution.

(Embodiment 4) In FIGS. 1, 2 and 3,
When the refrigeration cycle circulates in the second refrigerant circuit 72 and no refrigerant flows in the first evaporator 45, or when the compressor 66 stops and no refrigerant flows in the first evaporator 45, the first The blower 46 is configured to operate for a predetermined time.

In such a structure, while the refrigerating chamber 37 is being cooled, that is, while the refrigerant is flowing to the first evaporator 45, the moisture in the air from the inside of the refrigerating chamber 37 or the outside of the refrigerator is the first evaporator 45. If the first blower 46 is operated when the refrigerant does not flow into the first evaporator 45, the attached frost is melted by the air in the refrigerating chamber and is reduced to water in the air. . Then, this moist air is stored in the refrigerating room 37.
By circulating the inside, the humidity in the refrigerating room 37 is kept high.

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

It should be noted that the operating time of the first blower 46 may be set in consideration of the necessity degree of humidity and the degree of influence on power consumption, and is not specified by the operating time, but rather the temperature rise of the first evaporator 45. It is also possible to take a method such as defining the value.

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

In FIGS. 6 and 7, reference numeral 76 is a refrigerator main body, and reference numeral 77 is a rear plate which is a rear surface of the refrigerating chamber 37 and which is connected to the lower end of the first cooling chamber 74 by providing a step portion. A cold air intake air passage 78 is vertically formed in the back surface space of the back plate 77, the upper end thereof communicates with the cold air intake port 47 of the first cooling chamber, and the lower end thereof is the rear portion of the storage chamber 59 and the vegetable chamber 57. It communicates with the space. Further, 79 is a cold air suction port formed in the back plate 77 corresponding to the storage compartment 56.

In such a structure, the cool air discharged from the cool air discharge port 48 on the front of the upper part of the refrigerating room 37 reaches the lower part to cool the vegetable room 57 and the storage room 59 and then is collected in the cool air intake air passage 78. 1 is returned to the evaporator 45. In addition, the cold air that has cooled each of the storage compartments 56 is respectively sucked through the cold air suction port 79 of the back part, and the rear cold air suction air passage 78 is also provided.
And is returned to the first evaporator 45 through.

Therefore, the discharged cool air is not collected in the first cooling chamber 74 at the upper part of the refrigerating chamber 37, and the lower part of the refrigerating chamber 37 is surely cooled before returning, so that the cooling efficiency is improved. high. In addition, since cold air is evenly circulated in each of the storage compartments 56 of the main body side storage portion 40, uneven cooling is less likely to occur, and the storage quality of the stored food is stable.

Furthermore, the back space of the back plate 77 is formed in the back space of the back plate 77 not by the discharge air path as in the conventional case but by the suction air path through which the air having a temperature close to the temperature of the refrigerating chamber passes. The thickness of the cold air intake air passage 78 can be reduced without the need for a heat insulating material. Therefore, it is possible to reduce the invasion of the effective space in the refrigerator compartment 37. Since the cold air intake air passage is close to the temperature of the refrigerating compartment, it is possible to provide a lighting device in the air passage, which is effective when it is desired to enhance the illumination from the central portion to the lower portion of the refrigerating compartment.

(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 body,
The heat insulation partition wall 81 defines a refrigerating compartment 82 in the upper part and a freezing compartment 83 in the lower part. The first cooling chamber 74, which is formed in a substantially L shape in a horizontal portion and a vertical portion, is provided from a top portion to an upper rear portion in the refrigerating chamber 82. Also,
The second cooling chamber 6 is vertically provided at the rear of the freezing chamber 83.
0 is provided.

Reference numeral 84 is a low temperature chamber which is provided at the bottom of the refrigerating chamber 82 and mainly stores fresh food such as meat and seafood. Reference numeral 85 is a vegetable compartment provided above the low temperature compartment 84 in the refrigeration compartment 82, and 86 is an air passage control panel provided behind the low temperature compartment 84. Then, the air passage control panel 86
A damper device 87 for maintaining the room temperature at a predetermined value (for example, 0 ° C.) by adjusting the amount of cold air supplied to the low temperature chamber 84, and the first freezing chamber 83 of the freezing chamber 83 via the damper device 87. The second blower 62 in the second cooling chamber 60
Is provided with a cold air discharge air passage 88. Further, reference numeral 89 is a cold air suction air passage for returning the cold air that has cooled the low temperature chamber 84 to the second evaporator 61.

Reference numerals 90, 91 and 92 denote the refrigerating chamber 8
2, a temperature detector that detects the temperature in the freezer compartment 83 and the low temperature compartment 84 and maintains the temperature of each compartment at an appropriate temperature through a temperature control device (not shown).

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

If the temperature detector 91 of the freezer compartment 83 is higher than the set value, the compressor 66 is operated, and at this time, the refrigerator compartment 8
If the temperature detector 90 in 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 of the first blower 46 and the second blower 62 is discharged. The refrigerating room 82 and the freezing room 83 are cooled by the forced ventilation.

Cooling in the refrigerating chamber 82 is performed by the first cooling chamber 74.
It is performed by being discharged to the upper front surface of the refrigerating chamber 82 from the cool air discharge port 48 on the front surface via the cool air discharge air passage 49 inside. The discharged cool air drops downward from the front part of the refrigerating chamber and from the rear part through the cool air suction port 47 to the first cooling chamber 74.
Will be recovered in. At this time, the vegetable compartment 85 is also cooled by the cooling effect of the first evaporator 45 and the first blower 46 at the same time, for example, the refrigerating compartment 82 is maintained at 4 ° C. and the vegetable compartment 85 is maintained at 6 ° C.

On the other hand, the cold 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 blown into the cool air discharge air passage 88 by the forced ventilation action of the second blower 62. Then, if the temperature of the temperature detector 92 in the low temperature chamber 84 is higher than the set value,
The damper device 87 is opened and cold air is discharged, so that the low temperature chamber 8
The inside of 4 is cooled, and the second evaporator 6 is supplied from the cold air intake air passage 89.
Set back to 1. After that, when the temperature of the temperature detector 92 decreases to the set value, the damper device 87 closes and the cooling action is stopped. By repeating this action intermittently, the inside of the low temperature chamber 37 is cooled and maintained at a predetermined value (for example, 0 ° C.).

As described above, since the cooling of 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 is performed. It is possible to use low-temperature cold air that has been heat-exchanged at a temperature, and it is possible to easily maintain the temperature of the low temperature chamber 84 in a desired low temperature zone. Therefore, fresh food such as meat and seafood having a high temperature dependency 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, a partial freezing of −3 ° C., and the fresh food can be stored for a long period of time, so that the degree of freedom of eating habits is widened. 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 becoming long 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,
A refrigerating room 96 having a rotary heat insulating door 95 at the upper part by a heat insulating partition wall 94, a pullout heat insulating door 97 at the lower part thereof, a vegetable room 99 having a storage container 98, a pullout heat insulating door 100 at the lower part, storage A freezer compartment 102 having a container 101 and a low temperature compartment 105 having a drawer type heat-insulating door 103 and a storage container 104 are sectioned and formed above the freezer compartment 102.

Here, the first cooling chamber 74, which is formed in a substantially L shape in the horizontal portion and the vertical portion, is provided from the top portion to the upper rear portion in the refrigerating chamber 96. Further, the second cooling chamber 60 is provided in the vertical direction in the rear part of the freezing chamber 102.

Then, the low temperature chamber 105 and the freezing chamber 102.
A heat insulating partition 106 is provided between the low temperature chamber 10 and
An air passage control panel 107 having an adiabatic structure is provided at the rear of the unit 5. Inside the air passage control board 107, a damper device 108 for adjusting the amount of cold air supplied to the low temperature chamber 105 to maintain the room temperature at a predetermined value (for example, 0 ° C.), and the damper device 108 are interposed. Second of the freezer compartment 102
In the cooling chamber 60, a cool air discharge air passage 109 communicating with the discharge side of the second blower 62 is provided. Also, 110
Is a cold air suction air passage for returning the cold air that has cooled the low temperature chamber 105 to the second evaporator 61.

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

With respect to 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 refrigerating compartment 96 detects a temperature higher than the set value, the refrigerant is discharged. Is the first evaporator 45 and the second evaporator 6
1 and the forced ventilation of the first blower 46 and the second blower 62 cools the refrigerator compartment 96 and the freezer compartment 102.

Cooling in the refrigerating chamber 96 is performed by the first cooling chamber 74.
It is performed by being discharged to the upper front surface of the refrigerating chamber 96 from the cool air discharge port 48 on the front surface through the cool air discharge air passage 49 inside. The discharged cool air drops downward from the front part of the refrigerating chamber and from the rear part through the cool air suction port 47 to the first cooling chamber 74.
Will be recovered in. At this time, the vegetable compartment 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 refrigerating compartment 96 is maintained at 4 ° C and the vegetable compartment 99 is maintained at 6 ° C.

On the other hand, the cold 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 cold air cooled by the second evaporator 61 is
The forced air is blown into the cool air discharge air passage 109 by the forced 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,
It is returned to the second evaporator 61 from the cold air intake air passage 110.
After that, when the temperature of the temperature detector 112 decreases to the set value, the damper device 108 closes and the cooling action is stopped. By repeating this action 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 second evaporator 61 and the second blower 6 which cool the inside of the low temperature chamber 105 are provided inside the freezing chamber 102.
Since it is performed based on the cooling action of No. 2, it is possible to use low-temperature cold air that has undergone heat exchange at a low evaporation temperature for cooling the freezing chamber, and it is possible to easily maintain the temperature of the low-temperature chamber 105 in a desired low temperature zone.

Further, since the low temperature chamber 105 is surrounded by the heat insulating partition walls 94 and 106 at the top and bottom, the heat insulating door 103 at the front part, and the air passage control panel 107 having heat insulating property at the back part, the low temperature chamber 105 is protected from the outside. Stable temperature control is possible because it is hardly affected by heat. Therefore, fresh food such as meat and seafood having a high temperature dependency 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, a partial freezing of −3 ° C., and the fresh food can be stored for a long period of time, so that the degree of freedom of eating habits is widened.

Furthermore, by providing the low temperature chamber 105 with an independent dedicated door 103 and pulling out the storage container 104 for use, food can be taken in and out independently at a height that is easy to use, and it is convenient and easy to use. By storing the road control panel 107 in the inner part where it is difficult to use, the storability of the lower part of the refrigerating room 96 is improved,
In this embodiment, a sufficient depth of the vegetable compartment 99 can be ensured and the storability can be improved.

(Embodiment 8) In the low temperature chamber 105 shown in FIG. 9, a temperature switching chamber capable of switching the temperature from the refrigerating temperature zone to the freezing temperature zone by changing the opening ratio of the damper device 108 by a temperature switching device such as a switch (not shown). And
The damper device 108 repeats the opening / closing operation based on the temperature detected by the temperature detector 112 in accordance with the user's arbitrary temperature band selection to keep the room cooled to a desired temperature band.

Therefore, since the cooling action of the second evaporator 61 and the second blower 62 provided in the freezer compartment 102 is used, low temperature cold air that has been heat-exchanged at a low evaporation temperature for cooling the freezer compartment is used. Therefore, it is possible to obtain a cooling capacity capable of easily switching a wide temperature range from refrigeration to freezing. And
The degree of freedom in food storage can be increased according to the eating habits of the user.

[0105]

As described above, the invention according to claim 1 includes a heat insulation partition wall for vertically partitioning the interior of the refrigerator body, and
A heat insulating partition wall forms a partition on the upper part of the refrigerator body.
The refrigerator compartment with multiple shelves and the bottom of the refrigerator body
The compartments formed in the freezer compartment and the ceiling from the upper rear of the refrigerator compartment
Is formed over the vertical part and is formed in a substantially L shape by the vertical part and the horizontal part.
First cooling chamber and the vertical inside the first cooling chamber
Part provided in the rear part above the refrigerating chamber
Evaporator and first air blow provided above the first evaporator
And a machine formed on the horizontal portion of the first cooling chamber.
Cold air discharge air passage provided at the top of the refrigerating chamber and the cold air discharge
It is formed only on the front surface of the air passage, and is cooled on the upper front surface of the refrigerating chamber.
Cold air outlet for discharging air and the lower rear part of the refrigerator body
And a machine room equipped with a compressor for a refrigeration cycle,
A second cooling chamber provided above the machine room and behind the freezer compartment;
Second evaporation vertically installed in the second cooling chamber
And a second blower provided above the second evaporator.
The refrigerating compartment is cooled by the first evaporator and the first blower, and the freezing compartment is cooled by the second evaporator and the second blower in accordance with the respective storage temperatures, so that the efficiency of the refrigeration cycle is improved. Further, the cooling air passage can be simplified in each room to enhance the cooling efficiency and reduce the power consumption.

Further, the air passage is simplified and the effective internal volume is expanded. Since the first cooling chamber is provided in the upper rear part and the top part of the refrigerating chamber, which has been inconvenient to use in the past, the effect on the actual internal volume is further reduced, and the storage range is frequently used due to the height easily accessible to the user. The usability of is improved.

Further, by using the evaporator exclusively for the freezing compartment, the second evaporator at the rear part of the freezing compartment can be miniaturized, and the storage range (center portion and lower portion) of the refrigerating compartment at an easy-to-use height is expanded to improve the usability. Is improved.

In addition, since the refrigerating compartment is provided with the dedicated first evaporator, the evaporation temperature can be increased according to the room temperature, the drying of the stored food is suppressed, and the storage quality is improved.

Further, temperature rise in the front part of the refrigerating room and supercooling of the rear part of the room are suppressed, and temperature unevenness in the room where the front part is high and the rear part is low is reduced and storage quality is stabilized. Further, since the cooling is performed independently of the freezer compartment, the storage quality is improved without being affected by the temperature increase due to the defrosting of the second evaporator.

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

According to a second aspect of the present invention, the inside of the refrigerator main body is
Insulation partition wall divided into upper and lower parts, and above the insulation partition wall
A refrigerating room having a plurality of shelves formed into a compartment, and the heat insulation section
Vegetables partitioned above the wall and below the refrigerator
A chamber and a freezer compartment formed below the heat insulating wall,
Provided independently in front of the refrigerator compartment, vegetable compartment and freezer compartment
The door and the upper part of the refrigerating room from the top to the top
A first cooling chamber formed in a substantially L shape with a vertical portion and a horizontal portion
And the cooling provided in the vertical portion in the first cooling chamber.
A first evaporator installed in the upper rear part of the storage compartment;
A first blower provided above the evaporator of the
It is formed on the horizontal part of the cooling room and installed on the top of the refrigerating room.
Formed only on the cold air discharge air passage and on the front surface of the cold air discharge air passage.
Cold air discharge that discharges cold air to the front of the upper part of the refrigerating chamber
An outlet and a freezer cycle at the bottom rear of the refrigerator body
Machine room equipped with a compressor and a freezer above the machine room.
A second cooling chamber provided at the rear of the chamber, and the second cooling chamber
A second evaporator installed vertically in the
A first blower provided above the blower,
Of the refrigerator compartment and the vegetable compartment with an evaporator and a first blower
Cool and freeze with the second evaporator and second blower.
The refrigerating 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 their respective storage temperatures. As a result, the efficiency of the refrigeration cycle is increased, and at the same time, the vapor pressure difference in the refrigerating compartment and the vegetable compartment can be raised by the dedicated evaporator in accordance with the room temperature, so that the vapor pressure difference is reduced and the drying of the stored food is also suppressed.

Further, the first cooling chamber is integrated in the upper part of the refrigerating chamber,
The refrigerator has been simplified to increase the storage capacity in the depth direction at the center of the refrigerator, which is easy to use, eliminates the invalid space in the back of the vegetable compartment, and improves the usability of the vegetable compartment with an independent door. It

According to a third aspect of the present invention, in the invention according to the first or second aspect, the temperature of at least the main body side storage section in the refrigerating chamber is set to a low temperature range of 0 to 3 ° C. It is possible to store fresh foods such as meat, fish, and vegetables, which are highly dependent on each other, in a refrigerating room without using a special cooling air passage structure or a temperature control device such as a damper device.

According to a fourth aspect of the invention, in the invention according to any one of the first to third aspects, the first blower is operated even when the refrigerant does not circulate in the first evaporator. With such a configuration, the frost on the first evaporator is melted by the air in the refrigerating chamber during the circulation of the refrigerant and is returned to the room, whereby the humidity in the refrigerating chamber is increased. Further, it is possible to further suppress the drying of the food stored in the refrigerating compartment, and further extend the storage period and improve the storage quality.

According to a fifth aspect of the invention, in the invention according to the first aspect, the second aspect, or the fourth aspect, the compressor, the condenser, the first pressure reducer, the switching valve, the first evaporator, A first refrigerant circuit in which a second evaporator is annularly connected, and a bypass between the switching valve of the refrigerant circuit and the first pressure reducer via the second pressure reducer to the second evaporator. However, the compressor, the condenser, the first pressure reducer, the switching valve, the second pressure reducer, and the second evaporator are provided with a refrigeration cycle that constitutes a second refrigerant circuit connected in an annular manner. The switching of the cooling circuit between the refrigerating room and the freezing room can be easily performed with a single switching valve, and the efficiency of the refrigeration cycle can be improved to reduce power consumption and improve the storage quality of the refrigerating room and the freezing room.

[Brief description of 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 the first embodiment of the refrigerator according to the present invention.

FIG. 3 is a refrigeration cycle diagram of Embodiment 1 of the refrigerator according to the present invention.

FIG. 4 is a perspective view of a refrigerator according to a second embodiment of the present invention.

FIG. 5 is a sectional view of a refrigerator according to a second embodiment of 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 a fifth embodiment of the refrigerator according to the present invention.

FIG. 8 is a sectional view of a sixth embodiment of the refrigerator according to the present invention.

FIG. 9 is a sectional view of a refrigerator according to a seventh embodiment of 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 Insulation partition wall 37 Refrigerator 38 Freezer 40 Main unit side storage 44 First cooling chamber 45 first evaporator 46 First Blower 48 Cold air outlet 49 Cold air discharge air passage 50 lighting room 52,53 lighting device 54 translucent plate 55 shelves 57 vegetable room 60 Second cooling chamber 61 Second evaporator 62 Second Blower 66 compressor 67 condenser 68 First decompressor 69 switching valve 70 Second decompressor 71 First Refrigerant Circuit 72 Second refrigerant circuit 74 First cooling chamber 75 Lighting device 78 Cold air intake air passage 79 Cold air intake 81 Insulation partition wall 82 Refrigerator 83 Freezer 84 Low greenhouse 87 Damper device 92 Low greenhouse temperature detector 94 Insulation partition wall 96 Refrigerator 102 Freezer 103 insulated door 105 low greenhouse 106 Insulation partition wall 107 Airway control panel 108 Damper device 113 Low greenhouse temperature detector

Claims (5)

(57) [Claims] 1. A heat insulation partition wall that divides the interior of the refrigerator body into upper and lower parts, a refrigerating chamber that is formed in the upper part of the refrigerator body and has a plurality of shelves by the heat insulation partition wall, and a lower part that is formed in the lower part of the refrigerator body. And a vertical portion and a horizontal portion, which are provided from the upper rear portion of the refrigerating chamber to the top portion and are substantially L-shaped.
A first cooling chamber formed Jo, the first cooling chamber
Installed in the vertical section and installed in the upper rear section of the refrigerator compartment
A first evaporator, a first blower provided above the first evaporator, and a cool air discharge air provided at the top of the refrigerating chamber formed in the horizontal portion of the first cooling chamber. And the upper part of the refrigerating chamber formed only on the front surface of the cold air discharge air passage
A cool air outlet for discharging cool air to the front, a machine room provided at the lower rear of the refrigerator body and having a compressor for a refrigeration cycle, and a second cooling room provided above the machine room and behind the freezer room. And a second evaporator vertically installed in the second cooling chamber, and a second blower provided above the second evaporator. 2. A heat-insulating partition wall that divides the interior of the refrigerator body into upper and lower parts, a refrigerating compartment having a plurality of shelves formed above the heat-insulating partition wall, and a lower portion of the refrigerating compartment above the heat-insulating partition wall. A vegetable compartment divided into compartments, a freezing compartment defined below the heat insulation wall, a door independently provided in front of the refrigerating compartment, the vegetable compartment, and the freezing compartment, and a rear upper portion of the refrigerating compartment. It is installed up to the top and the vertical and horizontal parts are approximately L
A first cooling chamber formed in a V shape, and the first cooling chamber
Installed in the vertical part of the
A first evaporator which, said first blower and said first made form <br/> to the horizontal portion of the cooling chamber ceiling portion of the refrigerating chamber provided above the first evaporator a cool air discharge air path provided in, is formed only on the front surface of the cool air discharge air path on said refrigeration compartment
A cool air discharge port for discharging cool air to the front of the unit, a machine room provided at the lower rear of the refrigerator main body and having a compressor for a refrigeration cycle, and a second cooling provided above the machine room and behind the freezing room. Chamber, a second evaporator vertically installed in the second cooling chamber, and a second evaporator provided above the second evaporator.
The first evaporator and the first fan cool the refrigerating compartment and the vegetable compartment, and the second evaporator and the second fan cool the freezer compartment. refrigerator. 3. The refrigerator according to claim 1, wherein the temperature setting of at least the refrigerator main body side storage section in the refrigerating chamber is set to a low temperature range of 0 to 3 ° C. 4. The refrigerator according to claim 1, wherein the first blower is operated even when the refrigerant does not circulate in the first evaporator. 5. A first compressor in which a compressor, a condenser, a first pressure reducer, a switching valve, a first evaporator, and a second evaporator are annularly connected.
Of the refrigerant circuit, the switching valve of the refrigerant circuit and the first pressure reducer are bypassed to the second evaporator via the second pressure reducer, and the compressor, the condenser, and the first pressure reducer are provided. A second device in which a vessel, a switching valve, a second pressure reducer, and a second evaporator are connected in an annular shape.
The refrigerating cycle which comprised the refrigerant circuit of said. The refrigerator of Claim 1, 2 or 4.