JP2001280790A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem of prior art that the temperature in a specific low temperature component provided in a refrigerating compartment rises as the temperature in the refrigerating compartment rises because the compressor of refrigeration system is controlled based on the temperature in a freezing compartment to bring about an environment unpreferable from the view point of freshness control of foods, and to provide a refrigerator effective for suppressing temperature rise in the specific low temperature component. SOLUTION: In a refrigerator provided, as one concrete means for solving the problem, with a specific low temperature component by sectioning the refrigerating compartment and cooling the refrigerating compartment and the specific low temperature component by circulating chill from a cooler by means of a fan, a technical means for providing a cold storage material is employed in the specific low temperature component.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator that cools a refrigerator compartment and a specific low-temperature room by circulating cool air cooled by a cooler with a blower, thereby suppressing a rise in the temperature of the specific low-temperature room. Related to refrigerators.

[0002]

2. Description of the Related Art A refrigerator having a specific low-temperature room partitioned and formed in a refrigerator room, a freezer room, a vegetable room, and a refrigerator room, and circulating cool air cooled by a cooler by a blower to cool the above-mentioned rooms. Prior art is shown in FIG. FIG. 6 is a longitudinal sectional view of the refrigerator. In this figure, reference numeral 50 denotes a refrigerator main body, which has a heat insulating structure in which a heat insulating material 51 is filled between an outer box and an inner box. Within the refrigerator main body 50, a refrigerator compartment 52, a vegetable compartment 53, and a freezer compartment 54 are provided in a partitioned manner from above, and the bottom of the refrigerator compartment 52 is partitioned by the refrigerator compartment 52 and a partition plate 55 above it. A specific low-temperature room 56 is provided, and the freezing room 54 is
7 and a lower freezer compartment 58. The front opening of the refrigerator compartment 52 is closed by a pivotable door 59 that is opened and closed by being laterally rotated by a hinge device on one side of the refrigerator main body 50.
The front opening of the vegetable compartment 53 is closed by a drawer-type door 61 that is pulled out forward together with a vegetable container 60 that is supported so as to be able to be pulled out in the front-rear direction with respect to left and right rails provided in the vegetable compartment 53. Like the vegetable compartment 53, the upper freezer compartment 57 and the lower freezer compartment 58 are respectively drawn out forward with containers 62 and 63 supported so as to be able to be pulled out in the front-rear direction with respect to left and right rails provided in the freezer compartment. It is closed at 64 and 65. An ice maker 80 is installed in the upper part of the upper freezer compartment 57, and a container 62 is a container for storing ice produced by the ice maker 80. The ice maker 80 is automatically supplied with water to an ice tray when a start switch is turned on. After a certain period of time or when the temperature of the ice tray is lowered due to the formation of ice, the motor is started to invert the ice tray to drop the ice into the container 62, and then the ice tray is returned and water is supplied again. To start the ice making operation. When the container 62 is filled with ice, it is detected by the detecting device and the ice making operation is stopped.

[0003] 66 is a refrigerant compressor of the refrigeration system, 67
Is a condenser for the refrigerant of the refrigeration system, and 68 and 69 are evaporators for the refrigerant of the refrigeration system. 70 is a first blower that circulates the cool air cooled by the first evaporator 68 to the upper freezer compartment 57 and the lower freezer compartment 58, and 71 is a cooler that cools the cool air cooled by the second evaporator 69 to the refrigerator compartment 52, the specific low-temperature compartment 56, and the vegetables. Second circulating to chamber 53
It is a blower. An air curtain dedicated duct 72 for forming an air curtain at the front opening of the refrigerator compartment 52 is provided.
Reference numeral 73 denotes a blower for forming the air curtain. As in the vegetable room 53, the specific low-temperature room 56 is provided with a container 74 supported so as to be able to be pulled out in the front-rear direction with respect to the left and right rails provided in the specific low-temperature room 56, respectively. It has a door 75 that pivots forward and opens. The specific low temperature chamber 56 is 0
A chilled room of about 1 ° C higher than 0 ° C, an ice greenhouse of about -1 to 2 ° C lower than 0 ° C and higher than the freezing temperature of food, and a thin ice layer on the surface of food It may be a partial room at about -4 ° C. As described above, the specific low-temperature chamber 56 is for cooling and storing food in a specific temperature range, and requires strict temperature control as compared with other rooms.

In such a configuration, in a normal state in which the doors of the respective rooms are closed, the compressor 66 operates in the refrigerator to cool the evaporators 68 and 69, and the blowers 70 and 71 operate to cool the respective rooms. Is circulated and each chamber is cooled. The temperature of the refrigerator compartment 52 is set to a predetermined temperature range by a cool air regulator (commonly called a damper device) that opens and closes a cool air duct 76 through which cool air is supplied from the blower 71 to the refrigerator compartment 52 according to the temperature of the refrigerator compartment 52. Is controlled. When a sensor provided in the freezer compartment detects a predetermined lower limit temperature of the freezer compartment, the compressor 66
And the blowers 70 and 71 are stopped, and when the temperature gradually rises and a sensor provided in the freezing room detects a predetermined upper limit temperature of the freezing room, the compressor 66 and the blowers 70 and 71 start operating. By such a cycle operation, each chamber maintains a cooling state.

In the above-described cooling state, the refrigerator compartment 5
When the second door 59 is opened, the blower 71 is shut down by the door switch that operates accordingly. On the other hand, an air curtain that flows from the air curtain duct 72 to the front opening of the refrigerator compartment 52 from top to bottom by the operation of the blower 73 is formed almost entirely across the width of the front opening of the refrigerator compartment 52. Suppress cold air leakage. The flow of air in this state is indicated by arrows in FIG. The refrigeration system is controlled by detecting the temperature of a sensor provided in the freezing room. If the sensor detects a predetermined upper limit temperature of the freezing room in this state, the compressor 66 and the blower 70 start operating. .

[0006]

In the above prior art, the compressor 66 of the refrigeration system is controlled not by the temperature of the refrigerator compartment 52 but by the temperature detection of a sensor provided in the refrigerator compartment. Even if the temperature of the refrigerator compartment 52 rises while the compressor 66 is stopped, the compressor 66 is not operated by itself. When the temperature of the refrigerator compartment 52 rises, the temperature of the specific low-temperature compartment 56 also rises due to the influence. Cold room 5
When the air curtain is formed by opening the second door 59, the outside air is caught in the air curtain and
2, the temperature of the specific low-temperature chamber 56 also rises due to the influence. From the viewpoint of food freshness management, such a rise in the temperature of the specific low-temperature chamber 56 is not preferable. In particular,
If the specific low temperature chamber 56 has a narrow proper storage temperature range like an ice greenhouse, the adverse effect on the food due to the temperature increase becomes large.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and has as its object to provide a refrigerator having an effect of suppressing a rise in temperature of a specific low-temperature room. For this reason, as one specific means for solving the above-mentioned problem, a specific low-temperature chamber is formed by partitioning the refrigerator into a refrigerator, and the cool air cooled by a cooler is circulated by a blower to the refrigerator and the refrigerator. In the refrigerator that cools the specific low-temperature room, technical means for providing a cold storage material in the specific low-temperature room is employed.

[0008] Further, as one specific means for solving the above-mentioned problems, a specific low-temperature chamber is formed by partitioning a refrigerator into a refrigerator, and cool air cooled by a cooler is circulated by a blower. In the refrigerator for cooling the refrigerator compartment and the specific low-temperature compartment, technical means for providing a cold storage material in a duct for supplying cool air to the specific low-temperature compartment is employed.

[0009] Further, the present invention provides, as one specific means for solving the above-mentioned problems, a specific low-temperature chamber which is divided into a refrigerator compartment, and cool air cooled by a cooler is circulated by a blower. Cooling the refrigerator compartment and the specific low-temperature compartment, and forming an air curtain at the front opening of the refrigerator compartment when the front door of the refrigerator compartment is opened. Technical means for providing a cold storage material in a duct for supplying cool air was adopted.

[0010] Further, the present invention, as one specific means for solving the above-mentioned problem, has a specific low-temperature chamber partitioned and formed in a refrigerator compartment, and cools air cooled by a cooler through a duct from a blower. In the refrigerator that cools each room, an air circulation path that forms an air curtain at the front opening of the refrigerator compartment with respect to the refrigerator compartment is provided, and the specific low-temperature room or the duct that supplies cool air to the specific low-temperature room is provided. A cooling means is provided, and when the front door of the refrigerating compartment is opened, the air is circulated to the specific low-temperature compartment by the blower through a duct through which cool normal cooling air flows.

[0011]

Next, an embodiment of a refrigerator according to the present invention will be described. 1 to 5 show one embodiment of the present invention. FIG. 1 is a front view of a two-evaporator type refrigerator, FIG. 2 is a longitudinal side view of the refrigerator of FIG. 1, and FIG. FIG. 4 is a vertical side view of a refrigerator of a single evaporator type, and FIG. 5 is a vertical side view of a refrigerator of another embodiment showing an air curtain state.

First, in FIGS. 1 to 3, reference numeral 1 denotes a refrigerator main body, which has a heat insulating structure in which a heat insulating material 2 is filled between an outer box and an inner box. In the refrigerator main body 1, a refrigerator compartment 3, a vegetable compartment 4, and a freezer compartment 5 are provided in a partitioned manner from the top, and a refrigerator compartment 3 and a partition plate (compartment wall) 6 above the refrigerator compartment 3 are provided at the bottom of the refrigerator compartment 3. A freezing compartment 5 is divided into an upper freezing compartment 8 and a lower freezing compartment 9. A front opening of the refrigerator compartment 3 is closed by a pivotable door 10 which is laterally pivoted by a hinge device on one side of the refrigerator body 1 and opened and closed.
The front opening of the vegetable compartment 4 is closed by a drawer-type door 12 which is pulled out forward together with a vegetable container 11 supported so as to be able to be pulled out in the front-rear direction with respect to left and right rails provided in the vegetable compartment 4. The upper freezing compartment 8 and the lower freezing compartment 9 are, like the vegetable compartment 4, respectively, containers 13 supported on the left and right rails provided in the freezing compartment so that they can be pulled out in the front-rear direction.
Pull-out doors 15, 16 which are drawn forward together with 14.
Is closed. On the left side in the upper freezer compartment 8, an ice maker 17 is installed at the upper part. The ice maker 17 automatically supplies water to the ice tray when the start switch is turned on, and after a certain period of time has elapsed or when the temperature of the ice tray has dropped due to ice formation,
After the motor is started and the ice tray is inverted to drop the ice into the lower ice container, the ice tray is returned, and water is supplied again to perform a cycle operation to start the ice making operation. When the ice container is filled with ice, this is detected by a detection device and the ice making operation is stopped. The ice container is supported so that it can be pulled out in the front-rear direction with respect to the left and right rails provided in the freezer compartment, and the ice container is drawn out with the pulling-out operation of the front door 15A.

Reference numeral 18 denotes a refrigerant compressor of the refrigeration system;
Is a condenser of the refrigerant of the refrigeration system, and 20 and 21 are evaporators (coolers) of the refrigerant of the refrigeration system. Reference numeral 22 denotes a first blower for circulating the cool air cooled by the first evaporator 20 to the upper freezing room 8 and the lower freezing room 9, and 23 denotes the cool air cooled by the second evaporator 21 to the refrigerator room 3, the specific low-temperature room 7 and the vegetables. Second circulating to room 4
It is a blower. An air curtain duct 24 for forming an air curtain at the front opening of the refrigerator compartment 3 is provided at the periphery of the refrigerator compartment 52, and 25 is a blower for forming the air curtain. Like the vegetable room 4, the specific low-temperature room 7 is provided with a container 26 supported so as to be able to be pulled out in the front-rear direction with respect to the left and right rails provided in the specific low-temperature room 7, respectively. It has a door 27 that pivots forward and opens.

The temperature of each compartment is about 3-5 ° C. in the refrigerator compartment 3, about 3-5 ° C. in the vegetable compartment 4, and about −1 in the upper freezer compartment 8 and the lower freezer compartment 9.
8 ° C to -20 ° C. The specific low-temperature room 7 is a chilled room at approximately 1 ° C. higher than 0 ° C., or an ice green room at approximately −1 to 2 ° C. lower than 0 ° C. and higher than the freezing temperature of food.
In addition, about the extent that a thin ice layer is formed on the surface of the food-
It may be a 4 ° C partial room. As described above, the specific low-temperature chamber 7 is for cooling and storing foods in a specific temperature range, and requires stricter temperature control than other rooms.

The present invention provides a refrigerator suitable for maintaining the temperature of the specific low-temperature chamber 7. One of the configurations is characterized in that a cold storage material 28 is provided in the specific low-temperature chamber 7.

In such a configuration, in a normal state in which the doors of the respective rooms are closed, the compressor 18 operates in the refrigerator to cool the evaporators 20 and 21, and the blowers 22 and 23 operate to cool the respective rooms. Is circulated and each chamber is cooled. The temperature of the refrigerator compartment 3 is set to a predetermined temperature range by a cool air controller (commonly referred to as a damper device) that opens and closes a cool air duct 29 for supplying cool air from the blower 23 to the refrigerator compartment 3 according to the temperature of the refrigerator compartment 3. Is controlled. When a sensor provided in the freezer compartment 5 detects a predetermined lower limit temperature of the freezer compartment 5, the operation of the compressor 18 and the blowers 22 and 23 is stopped, and the temperature is gradually increased and the sensor provided in the freezer compartment 5 becomes When the predetermined upper limit temperature is detected, the compressor 18 and the blowers 22 and 23 start operating. By such a cycle operation, each chamber maintains a cooling state.

In the above-described cooling state, the refrigerator compartment 3
When the door 10 is opened, the blower 23 is shut down by the door switch operated by the door 10. On the other hand, an air curtain which flows from the air curtain duct 24 to the front opening of the refrigerator compartment 3 from above to below by the operation of the blower 25 is formed substantially over the entire width of the front opening of the refrigerator compartment 3. Suppress cold air leakage. The flow of air in this state is shown by arrows in FIG. The refrigeration system is controlled by detecting the temperature of a sensor provided in the freezing room 5. If the sensor detects a predetermined upper limit temperature of the freezing room 5 in this state, the compressor 18 and the blower 22 operate. Start.

Since the compressor 18 of the refrigeration system is controlled not by the temperature of the refrigerator compartment 3 but by the temperature detection of a sensor provided in the refrigerator compartment 5, the compressor 18 and the blowers 22, 23 are stopped. Even if the temperature of the refrigerator compartment 3 rises, the compressor 18 and the blowers 22 and 23 are not operated by itself. When the temperature of the refrigerator compartment 3 rises,
The temperature of the specific low-temperature chamber 7 also tends to increase. In addition, refrigerator room 3
When the air curtain is formed by opening the door 10, the outside air is caught in the air curtain, the temperature of the refrigerator compartment 3 gradually rises, and the temperature of the specific low-temperature compartment 7 also tends to rise due to the influence. From the viewpoint of food freshness management, an increase in the temperature of the specific low-temperature chamber 7 is not preferable. However, in the present invention, since the cold storage material 28 is provided in the specific low-temperature chamber 7, the cold storage material 28 is cooled by the circulating cool air in the normal cooling operation state. Since the surrounding air is cooled, an increase in the temperature of the specific low-temperature chamber 7 is suppressed. Therefore, the temperature rise in the specific low-temperature room 7 is suppressed as compared with the prior art, and the maintenance of the freshness of the food in the specific low-temperature room 7 is improved.

The cold storage material 28 may be attached to the lower surface of the partition plate 6 of the specific low-temperature room 7 as shown in the figure, may be provided on the peripheral wall surface of the specific low-temperature room 7, or may be provided on the bottom surface of the specific low-temperature room 7. You may. Further, since there is a cool air duct for distributing the cool air from the blower 23 to the specific low-temperature room 7 and the refrigerator room 3, in this case, a cold storage material is provided in the cool air duct for the specific low-temperature room 7 that sends cool air to the specific low-temperature room 7. In addition, the air from the blower 25 passes through the cool air duct for the specific low-temperature
The same effect can be expected by adopting a configuration that circulates to

FIG. 4 shows a refrigerator of a single evaporator (cooler) type. Here, the same reference numerals as those in FIGS. 1 to 3 denote the same parts, and a description thereof will be omitted. In FIG.
The refrigeration system includes a refrigerant compressor 18, a refrigerant condenser 1
9. It has a refrigerant evaporator (cooler) 30. Evaporator 30
The cool air cooled in the above is circulated to each room by the blower 31, but from the duct 32 to the refrigerating room 3, from the duct 33 to the specific low-temperature room 7, from the duct 34 to the vegetable room 4, and from the upper freezing room 8.
Cold air circulates from the duct 35 to the lower freezing compartment 9. The cool air flowing to the refrigerator compartment 3 is configured to flow to the vegetable compartment 4 from the lower front side of the refrigerator compartment 3.

In this configuration, when the door 10 of the refrigerator compartment 3 is opened, the door switch operated thereby causes
The blower 31 is operated to operate each of the ducts 32, 33, 34,
The air in the refrigerator circulates to 35. Door 1 of refrigerator compartment 3
When the air curtain 0 is opened, the damper 37 that has closed the air curtain duct 36 is opened from the dotted line position to the solid line position in FIG. 5, and the air curtain flowing from the front opening of the refrigerator compartment 3 from top to bottom is almost refrigerated. It is formed so as to fill the entire width of the front opening of the chamber 3 and suppresses leakage of cool air from the refrigerator compartment 3.
The flow of air in this state is indicated by arrows in FIG. The opening and closing of the damper 37 is performed by an operating rod that operates by opening and closing the door 10, but may be configured to be operated by an electromagnet controlled by a switch that operates by opening and closing the door 10. Also, the damper 37 is not provided, and the air curtain duct 36 is always open regardless of whether the door 10 is opened or closed.
The air curtain may be formed even when 0 is closed.

In this configuration, since the cold storage material 28 is provided in the specific low-temperature chamber 7, the cold storage material 28 is cooled by circulating cool air in a normal cooling operation state, and the cold storage material 28 cools the surrounding air. The temperature rise in the specific low-temperature chamber 7 is suppressed. Therefore, the temperature rise in the specific low-temperature room 7 is suppressed as compared with the prior art, and the maintenance of the freshness of the food in the specific low-temperature room 7 is improved.

The cold storage material 28 may be provided on the lower surface of the partition plate 6 on the upper wall of the specific low-temperature chamber 7 as shown in the figure, or the partition wall of the specific low-temperature chamber 7 may be mainly composed of the cold storage material. . Further, in order to improve the cooling effect of the specific low-temperature room 7, the cold storage material 28 may be provided on the peripheral wall surface of the specific low-temperature room 7, and further provided on the bottom surface of the specific low-temperature room 7 so as to be in direct contact with the food to improve the cooling. You can also In addition, a cool storage material is provided in a cool air duct 33 for distributing cool air from the blower 31 to the specific low-temperature chamber 7, and air from the blower 31 is supplied to the cool air duct 33.
, The same effect can be expected.

According to a first technique of the present invention, in order to provide a refrigerator suitable for maintaining the temperature of a specific low-temperature room, a specific low-temperature room is formed by partitioning the refrigerator into a refrigerator, and cool air cooled by a cooler is blown by a blower. In the refrigerator that circulates in the refrigerator to cool the refrigerator compartment and the specific low-temperature compartment, a cold storage material is provided in the specific low-temperature compartment. For this reason, the cold storage material is cooled by the circulating cool air in the normal cooling operation state, and the cold storage material cools the surrounding air, so that the temperature rise in the specific low-temperature chamber is suppressed.
Therefore, the temperature rise in the specific low-temperature room is suppressed as compared with the prior art, and the maintenance of the freshness of the food in the specific low-temperature room is improved.

According to a second technique of the present invention, in order to provide a refrigerator suitable for maintaining the temperature of a specific low-temperature room, a specific low-temperature room is formed by partitioning the refrigerator into a refrigerator, and cool air cooled by a cooler is blown by a blower. In the refrigerator that circulates through the refrigerator to cool the refrigerating room and the specific low-temperature room, a cold storage material is provided in a duct that supplies cool air to the specific low-temperature room. For this reason, the specific low-temperature room can be widened as compared with the case where the cold storage material is provided in the specific low-temperature room. The purpose can be achieved by providing the cold storage material in the duct for supplying the cool air to the specific low-temperature chamber, so that the size of the cold storage material is not unnecessarily increased.

According to a third technique of the present invention, in order to provide a refrigerator suitable for maintaining the temperature of a specific low-temperature room, a specific low-temperature room is formed by partitioning the refrigerator into a specific low-temperature room. In the refrigerator that circulates at the refrigerator compartment and the specific low-temperature compartment, and forms an air curtain at the front opening of the refrigerator compartment when the front door of the refrigerator compartment is opened,
A cold storage material is provided in the specific low-temperature room or in a duct for supplying cool air to the specific low-temperature room. For this reason, the cold storage material is cooled by the circulating cool air in the normal cooling operation state, and the cold storage material cools the surrounding air, so that the temperature rise in the specific low-temperature chamber is suppressed. Therefore, the temperature rise in the specific low-temperature room is suppressed as compared with the prior art, and the maintenance of the freshness of the food in the specific low-temperature room is improved. Further, when the cold storage material is provided in the duct, the specific low temperature room can be made wider than when the cold storage material is provided in the specific low temperature room. The purpose can be achieved by providing the cold storage material in the duct for supplying the cool air to the specific low-temperature chamber, so that the size of the cold storage material is not unnecessarily increased.

According to a fourth technique of the present invention, in order to provide a refrigerator suitable for maintaining the temperature of a specific low-temperature room, a specific low-temperature room partitioned and formed in a refrigerating room is provided. In a refrigerator that cools each of the chambers through a duct from a blower, an air circulation path that forms an air curtain at a front opening of the refrigerator compartment is provided for the refrigerator compartment, and cool air is supplied to the specific low-temperature room or the specific low-temperature room. A cool storage material is provided in a duct to be supplied, and circulation of air to the specific low-temperature chamber by the blower when the front door of the refrigerator compartment is opened is performed through a duct in which cool air for normal cooling flows. In this way, since the cold air duct and the air curtain duct through which the cold air for normal cooling flows when the refrigerator compartment door is opened can be shared, there is no need to provide the air curtain duct particularly long as in the prior art. An air curtain blower is not required. Further, the circulating air is cooled by the cool storage material in the duct and circulated to the specific low-temperature room, so that the temperature rise in the specific low-temperature room is suppressed. Further, the specific low-temperature room can be widened as compared with the case where the cold storage material is provided in the specific low-temperature room. Further, since the object can be achieved by providing the cold storage material in the duct for supplying the cool air to the specific low-temperature chamber, the cold storage material does not become unnecessarily large.

According to the present invention, there is provided a refrigerator of a refrigeration system comprising a single compressor and a single cooler, a single compressor and two cooling units, The present invention can be applied to any of the refrigerators of the refrigeration system having the configuration of the vessel.

The present invention also relates to a refrigerator having a configuration in which the specific low-temperature room is provided not as a refrigerator room but as an independent storage room, such as a vegetable room or a freezer room, which can be pulled out forward by a dedicated door, such as a vegetable room or a freezer room. Alternatively, if a cold storage material is provided in a duct for supplying cool air to a specific low-temperature chamber, the same effect can be obtained.

[0030]

According to the first aspect of the present invention, the cold storage material is cooled by the circulating cold air in the normal cooling operation state, and when the supply of the cold air from the cooler to the refrigerator compartment is stopped, the cold storage material is cooled. Since the surrounding air is cooled, the temperature rise in the specific low-temperature room is suppressed. Therefore, the temperature rise in the specific low-temperature room is suppressed as compared with the prior art, and the maintenance of the freshness of the food in the specific low-temperature room is improved.

According to the second aspect of the present invention, the cold storage material can be widened in comparison with the case where the cold storage material is provided in the specific low temperature room, and the cold storage material is provided in the duct for supplying cool air to the specific low temperature room. Thereby, the object can be achieved, and the cool storage material is not unnecessarily increased.

According to the third aspect of the present invention, the cold storage material is cooled by circulating cool air in a normal cooling operation state, and the cold storage material cools the surrounding air, so that the temperature rise in the specific low-temperature chamber is suppressed. Therefore, the temperature rise in the specific low-temperature room is suppressed as compared with the prior art, and the maintenance of the freshness of the food in the specific low-temperature room is improved. In addition, when the cold storage material is provided in the duct, compared with the case where the cold storage material is provided in the specific low-temperature room,
The purpose can be achieved by providing a cold storage material in a duct for supplying cool air to the specific low-temperature room because the specific low-temperature room can be widened. Therefore, the size of the cold storage material is not unnecessarily increased.

According to the fourth aspect of the present invention, the cold air duct through which cold air for cooling normally flows and the air curtain dedicated duct can be used in common, so that there is no need to provide a specially long air curtain dedicated duct unlike the prior art. A curtain blower is not required. Further, since the circulating air is cooled by the cool storage material in the duct and circulated to the specific low-temperature room, the temperature rise in the specific low-temperature room is suppressed. Further, the specific low-temperature room can be widened as compared with the case where the cold storage material is provided in the specific low-temperature room. Further, since the object can be achieved by providing the cold storage material in the duct for supplying the cool air to the specific low-temperature chamber, the cold storage material does not become unnecessarily large.

[Brief description of the drawings]

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

FIG. 2 is a vertical sectional side view of a two-evaporator type refrigerator according to the embodiment of the present invention.

FIG. 3 is a vertical sectional side view of a refrigerator compartment showing an air curtain state according to the embodiment of the present invention.

FIG. 4 is a longitudinal sectional side view of a single evaporator type refrigerator according to another embodiment of the present invention.

FIG. 5 is a longitudinal sectional side view of a refrigerator compartment showing an air curtain state according to another embodiment of the present invention.

FIG. 6 is a vertical sectional side view of a two-evaporator type refrigerator according to the prior art.

FIG. 7 is a longitudinal sectional side view of a refrigerator compartment showing an air curtain state according to the prior art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Refrigerator main body 2 ... Insulation material 3 ... Refrigerator room 4 ... Vegetable room 5 ... Freezer room 6 ... Partition wall 7 ... Specific low temperature room 8 ... Upper freezer room 9 ... Lower freezer room 10 ... Refrigerator compartment door 11 ... Vegetable container 12 ... Vegetable compartment door 13 ... Freezer compartment container 14 ... Freezer compartment container 15 ... Upper freezer compartment door 16 ... Lower freezer compartment door 17 ... Ice maker 18 ... Compressor 19 ... Condenser 20 ... First Cooler 21 ... Second cooler 22 ... First blower 23 ... Second blower 24 ... Air curtain duct 25 ... Air curtain blower 26 ... Specific low-temperature room container 27 ... Specific low-temperature room door 28 ... Cold storage material 29 ... Duct 30 ... Cooler 31 ... Blower 32 ... Cool air duct for refrigerator compartment 33 ... Cool air duct for specific low temperature room 34 ... Cool air duct for vegetable room 35 ... Cool air duct for freezer room

Claims (4)

[Claims] 1. A refrigerator, wherein a specific low-temperature room is formed by being partitioned in a refrigerator room, and cool air cooled by a cooler is circulated by a blower to cool the refrigerator room and the specific low-temperature room. A refrigerator characterized by providing a cold storage material in the refrigerator. 2. A refrigerator, wherein a specific low-temperature room is formed by partitioning the refrigerator into a refrigerator, and cool air cooled by a cooler is circulated by a blower to cool the refrigerator and the specific low-temperature room. A refrigerator characterized by providing a cold storage material in a duct for supplying cold air to the refrigerator. 3. A specific low-temperature chamber is formed by partitioning the refrigerator into a refrigerator, and cool air cooled by a cooler is circulated by a blower to cool the refrigerator and the specific low-temperature chamber, and a front door of the refrigerator is provided. A refrigerator that forms an air curtain at the front opening of the refrigerator compartment when the refrigerator is opened, wherein a regenerator material is provided in the specific low-temperature room or in a duct that supplies cool air to the specific low-temperature room. 4. A refrigerator that has a specific low-temperature room partitioned and formed in a refrigerator room and cools each room through a duct from a blower with cool air cooled by a cooler, wherein the refrigerator room is provided with respect to the refrigerator room. An air circulation path forming an air curtain is provided at a front opening, a cold storage material is provided in the specific low-temperature room or a duct for supplying cool air to the specific low-temperature room, and the blower is provided when a front door of the refrigerating room is opened. Wherein the circulation of the air to the specific low-temperature chamber is performed through a duct through which cool air for normal cooling flows.