KR101396956B1 - Refrigerator - Google Patents

Abstract

An object of the present invention is to provide a refrigerator which is capable of suppressing inflow of cold air into the freezing compartment when the refrigerating compartment is solely cooled, thereby improving energy saving and food preservation.
There is provided a refrigeration system comprising a plurality of storage chambers and a first fan and a second fan for blowing cold air to each of a plurality of storage rooms, In the refrigerator, the air passage 4f in which the first blower 14 is installed and the air passage 3f in which the second blower 13 is installed are partially adjacent to each other with the boundary L therebetween, and the first blower The discharge side of the first blower 14 of the air passage 4f in which the second blower 13 is installed and the discharge side of the second blower 13 of the air passage 3f in which the second blower 13 is installed And an air volume control unit 37 for connecting the air paths 3f and 4f with each other.

Description

Refrigerator {REFRIGERATOR}

The present invention relates to a refrigerator.

There is known a refrigerator in which a plurality of storage rooms of different temperature zones are provided and air generated by heat exchange with a single cooler is blown by a plurality of blowing means corresponding to a plurality of storage rooms.

In the refrigerator disclosed in Patent Document 1, a refrigerator compartment fan and a freezer compartment fan are provided. The storage compartment temperature is detected by a temperature sensor provided in the refrigerating compartment and the freezer compartment, and the rotation speed of the refrigerator compartment fan and the freezer compartment fan So that the amount of air blown into the refrigerating compartment and the freezing compartment is adjusted.

In the refrigerator described in Patent Document 2, a damper is installed in the middle of the air passage of the refrigerating compartment to perform the operation of cooling the freezing compartment alone. Further, it is described that the temperature of each storage room is finely controlled independently by controlling the refrigerator compartment fan and the freezer compartment fan in accordance with the indoor detection temperature.

Japanese Patent No. 3494874 Japanese Patent No. 3073636

In the refrigerator described in Patent Document 1, when the amount of food to be input into the refrigerating compartment is large, the number of rotations of the freezing compartment fan is adjusted so that the refrigerating compartment is not excessively cooled to the freezing compartment to be cooled. Further, when one of the fans is driven, it is possible to prevent the reverse flow of the cold air flow, which is caused when the other fan is operated by the minimum fan rotation number to act like a valve and the other fan is stopped .

However, since a damper (cold flap) for blocking air blowing is not provided in the course of each air passage for blowing cool air to the refrigerating chamber and the freezing chamber, the operation of simultaneously cooling the refrigerating chamber and the freezing chamber becomes basic, It is difficult to suppress the reverse flow to the side where the fan is stopped.

In a refrigerator provided with a single cooler, it is important to operate the refrigeration cycle at the evaporation temperature (cooler temperature) adjusted to the temperature in the furnace in order to increase the energy saving. In particular, the efficiency of the refrigeration cycle can be increased by providing an operation mode (refrigerating chamber alone cooling operation) for cooling the refrigerating chamber alone and increasing the evaporation temperature.

However, Patent Document 1 does not disclose such energy saving operation. In the case of refrigerating room alone cooling operation in which energy saving is enhanced, the refrigerating compartment fan is operated and the freezing compartment fan is stopped. At this time, when the freezer compartment fan is completely stopped, a flow reversely flows in the blowing direction of the freezer compartment fan. That is, a part of the cool air circulating on the refrigerating compartment side flows into the freezing compartment from the freezing compartment cool air return port and flows from the discharge side (the downstream side of the cold air flow during the freezing compartment cooling operation) Backward flow phenomenon occurs. For this reason, it is described that the freezer compartment fan is rotated at a minimum number of revolutions to act like a valve to prevent a reverse flow phenomenon.

However, when a freezer compartment fan of about the same size as the refrigerator compartment fan is used, it is necessary to operate the freezer compartment fan at a low rotation speed of about 1/100 that of the conventional one to prevent backflow. Therefore, it is difficult to operate the fan rotation speed at the time of the normal freezing chamber cooling operation and the fan rotation speed at the time of preventing the reverse flow by using the same drive source (motor).

In addition, a configuration that realizes a low air flow rate by using a smaller freezing compartment fan than a refrigerating compartment fan can be considered. However, a high speed operation is performed to obtain a necessary air flow rate in a normal freezing compartment cooling operation, and noise also arises.

In addition, when the freezer compartment fan can not be operated at a sufficiently low speed in order to prevent a reverse flow phenomenon to the freezer compartment, it is preferable to cool the refrigerator compartment, but the freezing compartment fan is not suitable for cooling the freezer compartment There is a possibility that the freezing chamber is blown into the freezing chamber, thereby raising the temperature of the freezing chamber.

In the refrigerator described in Patent Document 2, since the damper is provided to block air blowing in the air passage of the refrigerating chamber, the operation of simultaneously cooling the freezing chamber and the refrigerating chamber and the operation of cooling the freezing chamber alone are performed.

However, there is no description about the refrigerating chamber alone cooling operation for enhancing energy saving, and there is no description about the flow of cold air in the refrigerating chamber and the freezing chamber when the refrigerating chamber is subjected to the single cooling operation.

As described above, Patent Documents 1 and 2 disclose a refrigerator having a refrigerator compartment fan for cooling the refrigerator compartment and a freezer compartment fan for cooling the freezer compartment. However, . Further, there is no description on the rapid cooling operation of the refrigerator compartment in which the refrigerator compartment is rapidly cooled in a short period of time as a cold air circulation as in the refrigerating compartment single cooling operation.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a refrigerator having improved energy saving and food preservation properties by suppressing the inflow of cold air into the freezing compartment when the refrigerating compartment is solely cooled .

In order to solve the above problems, for example, the configuration described in claims is adopted. The present invention includes a plurality of means for solving the above problems, for example, a refrigerator having a plurality of storage rooms, a first blower and a second blower for blowing cold air to each of the plurality of storage rooms, The blower is provided with a first blower and an air passage in which the second blower is installed and a part of which is adjacent to the first blower and a blower installed in the first blower, An air volume control section is provided in the boundary portion where the discharge side of the second air blower is adjacent to the air passage to be installed, the air volume control section connecting the air passages to each other.

According to the present invention, it is possible to provide a refrigerator with improved energy saving and food preservability by suppressing the inflow of cold air into the freezing compartment when the refrigerating compartment is solely cooled.

1 is a front view of a refrigerator according to an embodiment of the present invention;
2 is a front perspective view illustrating a cool air circulation path by removing a door of a refrigerator according to an embodiment of the present invention;
Fig. 3 is a cross-sectional view taken along the line AA of Fig. 2, showing the circulation path of cool air in the freezing chamber and the freezing chamber.
Fig. 4A is a diagram schematically showing the operation of each part during a refrigerating chamber-only cooling operation; Fig.
Fig. 4B is a diagram schematically showing the operation of each part during a frost use cooling operation using a frost as a cold heat source. Fig.
Fig. 5A is a diagram schematically illustrating a backflow phenomenon in a freezer compartment in a conventional refrigerator. Fig.
FIG. 5B is a view showing the relationship between the number of rotations of the refrigerator compartment fan in the conventional refrigerator and the amount of air in the refrigerator compartment and the freezer compartment. FIG.
6A is a front view of a fan supporting member according to an embodiment of the present invention.
6B is a sectional view taken along the line BB of Fig.
7A is a rear view of a partition part according to an embodiment of the present invention.
FIG. 7B is a DD sectional view of FIG. 7A. FIG.
FIG. 8 is a cross-sectional view of the fan supporting member of FIG. 6B and the partitioning portion of FIG.
FIG. 9A is a diagram schematically showing a cool air flow in a state in which cool air inflow into the freezing chamber is suppressed during a single cooling operation of the cold storage chamber according to the embodiment of the present invention; FIG.
9B is a view showing the relationship between the size of the air volume control unit according to the embodiment of the present invention and the air volume of the refrigerating chamber and the freezing chamber.
Fig. 9C is a diagram showing changes in temperature over time in the refrigerating compartment and the freezing compartment according to the embodiment of the present invention. Fig.
Figure 10 is a CC cross-sectional view of Figure 6a, according to another embodiment of the present invention.
11 is a view showing a different embodiment from FIG. 8;

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings.

1 is a front view of a refrigerator according to an embodiment of the present invention, and is a front view showing an opened state of a door. 2 is a front perspective view illustrating a cool air circulation path by removing a door of a refrigerator according to an embodiment of the present invention. Fig. 3 is a cross-sectional view taken along line A-A in Fig. 2, and shows the circulation path of the cool air between the freezing chamber and the refrigerating chamber.

On the other hand, in the present embodiment, when simply described as a refrigerator, it includes a freezing refrigerator having a refrigeration temperature chamber and a freezing temperature chamber.

The width of the refrigerator body 1 is 750 to 800 mm and the width of the cooler 16 for cooling the circulating cold air in the hearth is 500 mm . A defrost heater 41 as a heating means is provided in the lower portion of the cooler 16 in order to melt the frost that has grown on the cooler 16. The defrost water generated during the defrosting operation for heating the frost attached to the cooler 16 by the defrost heater 41 is discharged to the outside from the cylinder 28 which is the water receiving portion provided below the cooler 16 .

A freezing compartment 3 (a freezing temperature compartment and a compartment) of a refrigeration temperature range is disposed on the upper side of the heat insulating partition wall 9, and a refrigerating compartment 4 (refrigerated temperature compartment, storage compartment) That is, a plurality of storage rooms are provided.

In the freezing compartment 3, a shelf 19 for partitioning the storage space up and down is provided. Likewise, in the refrigerating compartment 4, a plurality of shelves 19 for vertically dividing the storage space are provided in the vertical direction.

In the lower portion of the refrigerating chamber (4), a storage case (20) suitable for storing fruits and vegetables such as vegetables and fruits is provided. The cold air is not directly blown into the storage case 20 and the cooler is wrapped around the storage case 20 and indirectly cooled. As a result, since cold air is not directly blown to the fruits or vegetables, drying can be suppressed. On the other hand, the storage case 20 does not necessarily have to have a completely closed structure, but may be structured such that cool air flows into the storage case 20 to some extent from the gaps.

Openings are respectively formed in the front surface of the freezing chamber 3 and the refrigerating chamber 4 (front side when viewing the refrigerator main body 1 from the front). The openings can be opened and closed by the freezing chamber door 7 and the freezing chamber door 8, respectively. On the storage space side of the refrigerator compartment door 8, a plurality of refrigerator compartment door compartments 10 are provided in the vertical direction. The refrigerator compartment door compartment 10 is in the form of a pocket having an opened top and is suitable for storing beverage containers 11 such as PET bottles and cans filled with soft drinks or mineral water, It is easy to insert and subtract.

The partition part 12 on the inner side of the freezing compartment 3 (rear side in the freezing compartment 3 when viewed from the front of the refrigerator body 1) is provided with a freezing compartment freezing compartment 2 and a freezing compartment freezing compartment (5). On the other hand, the freezer compartment cold air discharge port (2) is provided in plural in the vertical direction so as to discharge cold air corresponding to each of the plurality of storage spaces partitioned by the shelf (19).

The refrigerating compartment partitioning portion 39 of the refrigerating compartment 4 on the rear side of the refrigerating compartment 4 when viewed from the front side of the refrigerator main body 1 is provided with an air- And a plurality of first refrigerator compartment cool air discharge openings 6 are provided in the vertical direction. A plurality of first cold storage compartments 6 are provided communicating with first cold storage compartments 15 provided at a predetermined interval in the left and right direction to supply cold air to the left and right corners of the wide storage compartment .

Further, in the heat insulating partition wall 9, a second refrigerating compartment air passage 17 is provided in the front-rear direction. A second cold room discharge port (26) communicating with the refrigerating chamber (4) is formed at the front end of the second refrigerating compartment air passage (17). The second refrigerator compartment cold air discharge port 26 is formed in the vicinity of the upper portion of the refrigerator compartment door compartment 10 and the refrigerator compartment door compartment 10 is directly supplied with cold air.

The first refrigerator compartment air passage (15) and the second refrigerator compartment air passage (17) communicate with the air passage (21). The air passage 21 passes through the right side of the cooler 16 provided behind the freezing chamber 3 and widens in the width direction of the refrigerator main body 1 in the vicinity of the heat insulating partition wall 9. In the vicinity of the heat insulating partition wall 9 extending in the width direction, the air passage 21 is branched into the first refrigerating compartment air passage 15 and the second refrigerating compartment air passage 17.

A refrigerating compartment damper 40 serving as a refrigerating compartment cold air controlling means for controlling the supply amount of cold air to the refrigerating compartment 4 is provided in the air passage 21 before being branched into the first refrigerating compartment air passage 15 and the second refrigerating compartment air passage 17 .

A cold room cool air return port 25 is provided at a lower portion of the refrigerating compartment partition portion 39 and behind the storage case 20. The refrigerating compartment return air passage 27 communicating with the refrigerating compartment freezing compartment return opening 25 is located between the left and right first refrigerating compartment air compartments 15 and vertically at the center of the back of the refrigerating compartment 4.

A freezing compartment fan 13 (refrigeration temperature compartment blowing means, second blower) for blowing cool air to the freezing compartment 3 is provided above the cooler 16 inside the partitioning portion 12 of the freezing compartment 3, (Refrigerating temperature compartment blowing means, first blower) for blowing cool air to the left and right sides. The freezer compartment fan 13 and the refrigerating compartment fan 14 are fixed and supported at predetermined positions by the fan support member 18 and are not exposed to the storage space ahead of the partitioning portion 12. [

Fan front portions 13a and 14a are provided in the partitioning portion 12 in front of the freezing compartment fan 13 and the refrigerating compartment fan 14 (on the side of the freezing compartment 3). The fan front portions 13a and 14a are transparent or semitransparent window shaped members and the freezer compartment fan 13 and the refrigerating compartment fan 14 are connected to the freezing compartment 3 side Can be viewed from.

3, when the freezing chamber 3 is cooled, the cool air cooled by the cooler 16 is blown into the freezing chamber 3 from the freezing chamber cool air discharge opening 2 by operating the freezing compartment fan 13. The cool air blown into the freezing chamber 3 is returned to the cooler 16 from the freezing chamber cool air return port 5 and is again cooled by heat exchange. At this time, by closing the refrigerating compartment damper 40, it is possible to cool only the freezing compartment 3 without supplying cold air to the refrigerating compartment 4.

2 and 3, when the refrigerating compartment 4 is cooled, the cold air cooled by the refrigerating compartment 16 is supplied to the air passage 21, the refrigerating compartment damper 40, The refrigerant is divided into the first refrigerating compartment air passage 15 and the second refrigerating compartment air passage 17 so as to be blown out from the first refrigerating chamber discharge opening 6 and the second refrigerating chamber discharge opening 26 to the refrigerating chamber 4 . The cool air discharged from the first cold room discharge port (6) cools the stored object mounted on the shelf (19). The cool air discharged from the second cold room discharge port (26) cools the stored contents mainly in the refrigerator compartment door storage portion (10).

The cold room return chiller 25 is provided on the rear side of the storage case 20 and is returned to the chiller 16 from the lower side via the chill room return air passage 27 provided at the central portion on the back side of the chill chamber 4 .

When the freezing chamber 3 and the refrigerating chamber 4 are simultaneously cooled, the freezing compartment fan 13 and the refrigerating compartment fan 14 are operated and the refrigerating compartment damper 40 is opened to cool the inside of the compartment.

In consideration of the energy saving of the refrigerator, it is preferable that the cooler 16, which becomes the freezing temperature zone, is installed inside the freezing chamber 3. The cool air discharged by the freezer compartment fan 13 is discharged from the freezer compartment cool air discharge port 2 provided in the partition portion 12 in front of the freezer compartment fan 13 to the freezer compartment 3 and returned from the freezer compartment cool air return port 5 The ventilation resistance on the side of the freezing chamber 3 is liable to become relatively small because it is a cold circulation air passage.

On the other hand, the cool air circulating air passage on the refrigerating chamber 4 side is longer than the freezing chamber 3 side. In addition, if the food storage space of the refrigerating chamber 4 is enlarged, the ventilation resistance of the cold air passage is likely to increase.

The internal temperature is controlled by the program stored in the control device 50 based on the outputs of the temperature detector for the freezer room and the temperature detector (not shown) for the refrigerator room. The inside temperature is controlled by performing the cooling operation in which the freezer compartment fan 13, the refrigerating compartment fan 14, the refrigerating compartment damper 40 and the compressor 22 are controlled by the control device 50, respectively.

Here, in the case of a refrigerator that cools the freezer compartment 3 and the refrigerating compartment 4 with a single cooler 16, a refrigerating compartment freezing operation in which the refrigerating compartment 4 is solely cooled can be provided, The highly efficient operation of the refrigeration cycle can be performed by the evaporation temperature.

In this case, it is also conceivable to provide a damper for the freezer compartment, which blocks blowing to the freezer compartment 3 side, on the discharge side (the cool air downstream side of the freezer compartment fan 13) of the freezer compartment fan 13 . However, in a large-sized large refrigerator, it is not appropriate to increase the size of the freezer compartment damper in order to suppress the increase in the ventilation resistance. Therefore, it is not appropriate to secure the installation space and increase the hermeticity of the damper.

Next, in the air passage structure of the refrigerator according to the embodiment having the freezer compartment fan 13, the refrigerating compartment fan 14, and the refrigerating compartment damper 40 serving as the refrigerating compartment cold air adjusting means, , Using Figs. 4A and 4B. Here, the cool air flow when the backflow phenomenon (to be described later in detail) during the single cooling operation in the refrigerating compartment generated in the air passage configuration of the conventional refrigerator is suppressed by the air volume control unit 37 is shown.

Fig. 4A is a diagram schematically showing the operation of each part at the time of the refrigerating chamber-only cooling operation. Fig. A freezing compartment fan 13 for cooling the freezing compartment 3 and a refrigerating compartment fan 14 for cooling the refrigerating compartment 4, that is, a part of the air passage leading from the cooler 16 to the refrigerating compartment 4, A part of the air passage leading from the cooler 16 to the freezing chamber 3 is arranged adjacently with the boundary L therebetween (see FIG. 8). The discharge air passage 3f (air passage) on the side of the adjacent freezing chamber 3 and the discharge air passage 4f (air passage) on the side of the refrigerating chamber 4 are provided with projecting portions 23 and 24 facing each other as boundary portions And the protruding portions 23 and 24 are disposed so as to be in contact with each other so that the discharge air passages 3f and 4f are partitioned (see FIGS. 6B, 7B, and 8). An air volume control unit (not shown) for connecting the discharge air passage 3f on the side of the freezing compartment 3 and the discharge air passage 4f on the side of the refrigerating compartment 4 is provided at a portion of the boundary L where the projections 23, 37 are installed.

A refrigeration cycle is formed in which the compressor 22, the radiator 29, the throttle 30 (decompression means), and the cooler 16 are connected in this order by the pipe 31 through which the coolant flows. The radiator 29 is provided with a heat dissipating fan 32 for promoting heat dissipation. 4A, since the refrigerating compartment 4 is solely cooled, the compressor 22 is turned ON, the freezing compartment fan 13 is turned OFF, the refrigerating compartment fan 14 is turned ON, the refrigerating compartment damper 40 Is opened (open), and the cold air 33 passes through the refrigerator compartment damper 40 to cool the refrigerating compartment 4.

In order to increase the evaporation temperature of the cooler 16 and perform the energy saving operation, the compressor 22 is operated at low speed. That is, the refrigerator compartment 4 is kept at about 5 ° C and the freezer compartment 3 is kept at about -18 ° C. However, when the refrigerator compartment 4 is cooled alone, ) Can be operated at a low speed to increase the evaporation temperature, thereby enabling energy saving operation.

In the case where a large amount of food is put into the refrigerating chamber 4 or when the door opening time within a predetermined time becomes long in addition to the low speed operation of the compressor 22 for energy saving operation, The flow of cold air shown in the schematic diagram of Fig. 4A is obtained. However, in this case, the compressor 22 is operated at a high speed. On the other hand, these cooling operations are controlled by the control device 50 provided in the refrigerator main body 1.

Fig. 4B is a diagram schematically showing the operation of each part during the frost use cooling operation using frost as a cold heat source. Fig. On the other hand, the air passage structure is shown in Fig. Since the frost is a cold source, it is only the refrigerator temperature room that can be cooled. (In the case of a refrigerator with a vegetable storage room, it also includes a vegetable storage room.) 4A, the refrigerating compartment fan 14 is turned ON and the refrigerating compartment damper 40 is opened. However, the compressor 22 is turned OFF.

By operating the refrigerating compartment fan 14, the temperature of the cooler 16 is increased along with the temperature rise of the frost layer attached to the cooler 16. If the refrigerating chamber is subjected to a single cooling operation by turning on the compressor 22 after the temperature of the cooler 16 is raised, the efficiency of the refrigeration cycle is increased, and an energy saving effect can be obtained.

The frost use cooling operation is performed at a temperature detected by a temperature sensor provided in the cooler 16 and a temperature sensor provided in the freezing chamber 3 and the refrigerating chamber 4 and a temperature sensor provided in the outside of the refrigerator Accordingly, the number of rotations of the refrigerator compartment fan 14 is controlled. The frost utilization cooling operation also includes a defrosting operation for controlling energization of the defrost heater 41 provided below the cooler 16 while the refrigerator compartment fan 14 is operating. That is, by controlling the amount of heating of the heating means, the heating time, the amount of electric current, and the like, the frost-use cooling operation is controlled. However, since the defrosting operation is in progress, the compressor 22 is turned off. By operating the defrosting fan 14 while energizing the defrost heater 41, it is possible to cool the refrigerating chamber 4 by using the frost as a cold heat source. Conventionally, the energy of the defrosting energy It is possible to save money. The frost-use cooling operation in which the compressor 22 is stopped and the refrigerating compartment fan 14 is operated and the defrosting operation in which the refrigerating compartment fan 14 is activated while energizing the defrost heater 41 are all set as frost sources Cooling can be performed by blowing the cold air containing the moisture of the frost to the refrigerating chamber 4 so that the cooling suitable for the preservation of the vegetables provided in the refrigerating chamber 4 can be performed in addition to the energy saving operation.

By combining the operations of the freezer compartment fan 13, the refrigerating compartment fan 14, the refrigerating compartment damper 40 and the compressor 22 even in the single cooler 16, it is possible to improve the efficiency of the refrigeration cycle, Operation can be carried out. And a defrosting structure capable of performing defrosting operation in which the defrosting operation is performed while the defrosting fan 14 is operated and the defrosting heater 41 is energized in the same manner as the frost-only cooling operation. Also, the rapid cooling operation of the refrigerating chamber 4 for performing the high-speed operation of the compressor 22 can be performed in the same cold flow.

In addition to the cooling operation shown in Figs. 4A and 4B, the freezer compartment cooling operation (the refrigerator compartment damper 40 is CLOSE (closed)), the freezer compartment fan 13, And the refrigerating and freezing compartment cooling operation for cooling the freezing compartment 3 and the refrigerating compartment 4 at the same time by operating the refrigerating compartment fan 14 and the refrigerating compartment fan 14 (the opening of the refrigerating compartment damper 40 is open, .

Next, the reverse flow phenomenon that occurs when the refrigerating compartment 4 side is cooled in the air conditioner configuration of the conventional refrigerator will be described in detail with reference to Figs. 5A and 5B.

5A is a diagram schematically illustrating a backflow phenomenon in a freezer compartment in a conventional refrigerator. For the sake of simplicity, the configuration of the refrigeration cycle is omitted. 5B is a diagram showing the relationship between the number of revolutions of the refrigerator compartment fan in the conventional refrigerator and the amount of air in the refrigerator compartment and the freezer compartment. On the other hand, the freezer compartment fan 13 is in a stopped state.

4A and 4B, because the cooling airflow of the refrigerating compartment 104 is larger than the cooling airflow of the freezing compartment 103, Called reflux cooler 135 (not shown) which is not introduced into the cooler 116 from the cold room cool air return port 125 but flows into the freezing room 103 from the freezing room cool air return port 105 without passing through the cooler 116, (Dotted line arrow) is generated. The countercurrent cooling air 135 that flows into the freezing chamber 103 flows from the discharge side (downstream side of the normal cold air flow) of the freezer compartment fan 113 to the suction side (upstream side of the normal cold air flow) of the refrigerating compartment fan 114 Flows through the refrigerating compartment damper 140 and the refrigerating compartment cold air discharging opening 106, and is again blown into the refrigerating compartment 104. When the frost grows in the cooler 116, the backflow phenomenon appears more remarkably.

5B, the number of rotations of the refrigerating compartment fan 114 in each of the defrosting operation, the frost cooling operation, the defrosting operation of the refrigerating compartment fan 14, and the refrigerating compartment rapid cooling operation, N1 to N2, the refrigerating compartment air volume 55 on the refrigerating chamber 104 side increases linearly (in the positive flow direction). However, a part of the cold air circulating in the refrigerating compartment 104 flows in from the freezing compartment air conditioner return port 105 of the freezing compartment 103 and flows backward. Therefore, even if the freezing compartment fan 113 is stopped, As shown in Fig. However, the flow flows backward from the freezer compartment cool air return port 105.

The temperature of the circulating cool air is higher than that during the cooling operation of the freezing chamber, and the temperature of the freezing chamber is increased during the cooling operation of the cooling chamber by the reverse flow cooling system 135 There is a concern.

Since the cold air on the side of the refrigerating chamber 104 containing a large amount of water flows into the freezing chamber 103 as the reverse flow cooler 135, frost is likely to occur in the vicinity of the freezing chamber cool air return port 105, There is a case where the frost grows on the wall surface of the wall.

In this case, although the frost generated in the cooler 116 can be melted by the defrost heater, there is no means for melting the frost that has grown on the wall surface in the freezing chamber 103, thereby reducing convenience. Further, frost may grow on the surface of the frozen food, and the preservability of the food deteriorates.

A part of the cool air circulating on the refrigerating chamber 104 side does not pass through the cooler 116, so that the cooling performance of the refrigerating chamber 104 also deteriorates. Likewise, in the case of the frost use cooling operation in which the operation of the compressor is stopped and the cool air is blown into the refrigerating chamber 104 (FIG. 4B), the cool air temperature circulating on the refrigerating chamber 104 side becomes higher than when the compressor 122 is operated , The influence of the temperature rise due to the back flow into the freezing chamber 103 becomes larger.

Next, the structure of the air volume control unit 37 provided in each of the discharge side air passages of the freezer compartment fan 13 and the refrigerating compartment fan 14 will be described in detail.

6A is a front view of a fan supporting member according to an embodiment of the present invention. 6B is a cross-sectional view taken along line B-B of FIG. 6A. 7A is a rear view of a partition part according to an embodiment of the present invention. FIG. 7B is a sectional view taken along the line D-D in FIG. 7A. FIG. Fig. 8 is a cross-sectional view of the fan supporting member of Fig. 6B combined with the partitioning portion of Fig. 7B.

As shown in Fig. 8, a partitioning portion 12 is combined on the front side of the fan supporting member 18 so that the freezing compartment fan 13 and the refrigerating compartment fan 14 (not shown) can be blown to the freezing compartment 3 and the refrigerating compartment 4, (On the downstream side of the cool air flow than the fan) is formed adjacent to the cold air path. The freezer compartment fan 13 and the refrigerating compartment fan 14 are provided with a fan support member (not shown) for partitioning the air passage on the suction side (the upstream side of the cooling flow than the fan) and the discharge side (the downstream side of the cooling flow than the fan) 18). 6A and 6B), the air passage 21 is provided in the outer periphery of the refrigerating compartment fan 14 and the air passage 21 so that the air passage 21 communicates with the second refrigerating compartment cold air discharge port 26 and the first cold compartment cold air discharge port 26. [ (Not shown). On the other hand, the protruding portion 24 is also provided in the partitioning portion 12 so that the protruding portion 23 provided on the fan supporting member 18 and a part of the protruding portion 24 are brought into contact with each other so that the fan supporting member 18, The air passage abcd through which the cool air generated by the freezer compartment fan 13 passes and the air passage befc through which the cool air generated by the refrigerator compartment fan 14 pass are combined with each other at the boundary L (See Fig. 8).

That is, the cold air blown by the freezing compartment fan 13 into the freezing compartment 3 by the air passage abcd is blown from the freezing compartment cold air discharge opening 2 provided in the partitioning portion 12 to the freezing compartment 3. The protruding portion 24 and the protruding portion 23 need only contact with each other so as to partition the air passage abcd and the air passage befc. Or a seal member such as a sponge.

The fan support member 18 having the freezer compartment fan 13 and the refrigerating compartment fan 14 and the partitioning part 12 provided on each fan discharge side can be assembled or assembled into the refrigerator 16, And the fan support member 18 and the partitioning portion 12 are generally fixed by a screw or the like provided at a predetermined position.

The joining portions of the protruding portions 24 and the protruding portions 23 provided opposite to the partitioning portion 12 and the fan supporting member 18 are adhered to each other by an adhesive material or by welding (for example, hot plate welding, vibration welding, ultrasonic welding) In the case of fixing, since it is intended not to form a gap in the joint portion, it is premised that there is no gap.

On the other hand, when the protruding portion 23 and the protruding portion 24 are brought into contact with each other with the divided members being contacted with each other without using bonding or welding (for example, hot plate welding, vibration welding or ultrasonic welding) It can be regarded as doing. Therefore, when the protrusions 23 and 24 are brought into contact with each other with the divided members opposed to each other, a gap is formed on the contact surface. In other words, the air flow control portion 37 is formed in the discharge side air passage adjacent to the freezing compartment fan 13 and the refrigerating compartment fan 14, so that the reverse flow phenomenon that occurs when the refrigerating compartment 4 side is cooled can be suppressed.

The cold air blown to the refrigerating chamber 4 is blown by the refrigerating compartment fan 14 by the befc and is discharged from the first refrigerating chamber cold air discharge opening 6 through the air passage 21 to the second cold storage room cold air discharge opening 26, (4). Further, the sealing member 42 having flexibility is provided on the outer peripheral portion of the partitioning portion 12 to enhance the hermeticity.

The air volume control unit 37 may be provided between at least the freezer compartment fan 13 and the refrigerating compartment fan 14. For example, the outer peripheries of the air paths abcd and befc may be adhered or welded together.

The configuration in which the air volume control unit 37 is provided between the projections 23 and 24 when the projections 23 and 24 are provided on both the fan support member 18 and the partitioning member 12 has been described , But the present invention is not limited thereto. For example, when the protruding portion 23 protruding from the fan supporting member 18 toward the partitioning portion 12 is provided, the air flow control portion 37 may be provided between the protruding portion 23 and the partitioning portion 12, The air volume control unit 37 may be provided between the projection 24 and the fan support member 18 when the projection 24 projecting from the partition 12 to the fan support member 18 side is provided.

Next, Fig. 9A is a diagram schematically showing a cool air flow in a state where cool air inflow into the freezing chamber is suppressed in the single cooling operation of the refrigerating chamber according to the embodiment of the present invention.

The discharge side air ducts of the freezer compartment fan 13 that cools the freezing compartment 3 and the refrigerating compartment fan 14 that cools the refrigerating compartment 4 are arranged adjacent to each other and make contact with the projections 23 and 24 The discharge-side air passage is partitioned. Here, the air volume control section 37 is provided in a part of the partition of the fan discharge side constituted by the projecting section 23 and the protruding section 24 to generate the air volume control flow 38. [ The air volume control flow 38 which becomes a part of the discharge air of the refrigerating compartment fan 14 is introduced into the freezing compartment 3 from the freezing compartment refrigerant discharge port 2 via the air volume control unit 37, .

The air flow control flow 38 flows in the direction opposite to the flow of the reverse flow cooler 35 flowing backward from the freezing room cool air return port 5 to the freezing room 3 and thus has the effect of suppressing the occurrence of back flow Able to know. 8, in the refrigerator of the present embodiment, the fan supporting member 18 provided as a different member and the partitioning portion 12 are arranged inside the freezing compartment 3 (the refrigerator compartment 1 is viewed from the front The freezing compartment fan 13 can be separated from the freezing compartment fan 13 by the rib-shaped protrusion 23 provided on the fan support member 18 and the rib-shaped protrusion 24 provided on the partitioning compartment 12, And the cold air path befc by the refrigerating compartment fan 14 are formed adjacent to each other on the left and right sides (in the width direction of the refrigerator main body 1). Since the discharge side partition part of the freezer compartment fan 13 and the refrigerating compartment fan 14 formed by opposing the protruding part 23 and the protruding part 24 constitute the fan supporting member 18 and the partition part 12 with different members A gap is formed in a portion where the protruding portion 23 and the protruding portion 24 are in contact with each other so that the air volume control portion 37 can be formed. On the other hand, a plurality of gaps may be formed in the portions where the protruding portions 23 or the protruding portions 24 contact with each other, and the function of the air volume control portion 37 may be provided by combining them.

As described above, when the protruding portions 23, 24 made of the fan supporting member 18 and the partitioning portion 12 are made of different members, the air volume control portion 37 can be easily provided, and the freezing chamber freezing It is possible to alleviate adverse influences such as the temperature rise of the freezing chamber 3 due to the backflow chiller 35 flowing from the return port 5. [

On the other hand, when the air volume control portion 37 is provided, the partition portion 12 and the fan support member 18 may be integrally formed instead of the partition member 12 and the fan support member 18, respectively.

Next, the size of the air volume control unit 37 and the effect of suppressing the backflow will be described.

9B is a diagram showing the relationship between the size of the air volume control unit according to the embodiment of the present invention and the air volume of the refrigerating chamber and the freezing chamber.

Fig. 9B shows a change in the size of the air volume control unit 37 and measurement of the air volume at that time. The air flow rate increases in the direction of the normal cold air flow toward the upper side of the figure and increases toward the lower side in the reverse direction of the normal cold air flow.

9B, when the refrigerator compartment cooling operation (refrigerating compartment fan 14 operation and freezer compartment fan 13 stop) is performed, when there is no air volume controller 37 (size D1), that is, The protruding portion 23 provided on each of the partition 18 and the partitioning portion 12 and the contact portion of the protruding portion 24 are adhered to each other or the fan supporting member 18 and the partitioning portion 12 are integrated, When the cold air flow path abcd and the cold air flow path befc are formed, the freezing compartment air flow rate 56 in the reverse flow region becomes largest. If the air volume control section 37 is increased to D2, D3, and DO, the freezing compartment air volume 56 in the reverse flow direction is suppressed. The size of the air volume control part 37 differs depending on the operation of the target refrigerator. For example, in the case of a refrigerator having a room temperature of 600L used for review, the size of the air volume control part 37 corresponds to a hole D0), it is possible to almost suppress the backflow.

When a plurality of gaps are formed at the portions where the projecting portions 23 or the projecting portions 24 are in contact with each other, they may be equivalent to holes having a size of about 25 mm. On the other hand, the refrigerating compartment air volume 55 slightly decreases as the air volume control unit 37 becomes larger due to the influence of the air volume control flow 38 flowing through the air volume control unit 37. The upper limit value of the size of the air volume control unit 37 is set so that at least air is blown into the refrigerating chamber 4 Is smaller than the cross sectional area of the befc.

FIG. 9C is a diagram showing changes in temperature over time in the refrigerating chamber and the freezing chamber according to the embodiment of the present invention. FIG. The internal temperature of the freezing compartment 3 and the refrigerating compartment 4 is a value measured by a temperature sensor (not shown) installed in each compartment. Based on the internal preset value and the detection value of the internal temperature sensor, ) In accordance with the control method stored in the memory. In the freezer compartment cooling operation, the freezer compartment temperature 47 is cooled from the upper limit temperature TF1 (time t1) to the lower limit temperature TF2 (time t2). At this time, the refrigerator compartment damper 40 is CLOSE, the freezer compartment fan 13 is ON, and the refrigerator compartment fan 14 is OFF.

During the freezing compartment cooling operation, when the refrigerating compartment temperature reaches the upper limit temperature (TR2) from the temperature (TR1), the refrigerating compartment is operated alone. At this time, the refrigerator compartment damper 40 is opened, the refrigerator compartment fan 14 is turned on, and the freezer compartment fan 13 is turned off. The freezing compartment temperature 43 decreases with the lapse of time, but the temperature of the freezing compartment rises due to the influence of the reverse cooling fan 35. Thus, when the air volume control unit 37 is not provided, the freezer compartment temperature 45 is raised during the refrigerating chamber-only cooling operation. On the other hand, when the sizes of the air volume control unit 37 are set to D2 and D3 (see Fig. 9B), the temperature rise is relieved by the freezing room temperature 46 and the freezing room temperature 44 indicated by broken lines, respectively.

Next, FIG. 10 is a cross-sectional view taken along line C-C of FIG. 6A, and is a view according to another embodiment of the present invention. In this embodiment, the cutout portion 51 is provided in advance in a part of the protruding portion 23 so as to have the function of the air volume control portion 37. In this embodiment, since the size of the air volume control section 37 can be uniquely determined, the effect of suppressing the back flow is further enhanced. 10, the cutout portion 51 is provided on a part of the protruding portion 23 so as to be lower than the other portions. However, the cutout portion 51 may be provided on the protruding portion 24. 8, the partitioning portion 12 and the fan supporting member 18 are different members. However, the cutout portion 51 may be provided in advance on at least one or both of the projecting portions 23, 24 in advance The partitioning portion 12 and the fan supporting member 18 may be integrated.

Next, Fig. 11 is a diagram showing an embodiment different from Fig. A partitioning member 53 is provided in the discharge space of each of the freezing compartment fan 13 and the refrigerating compartment fan 14 in the partition space member 52 in which the fan support member 18 and the partitioning portion 12 are integrated, The discharge side cool air passage abcd of the freezer compartment fan 13 and the discharge side cool air passage befc of the refrigerator compartment fan 14 are provided adjacent to each other. The partitioning member (53) is provided with a variable air volume control unit (54) having a mechanism for varying the air volume. The variable air volume control unit 54 may be, for example, a damper capable of operating the flap 57 electrically. Since the size of the air volume control part provided in the partitioning member 53 assumes a hole of a size of the order of several tens of millimeters, the variable air volume control unit 54 becomes compact. In Fig. 11, an electric damper using a flap is exemplified as the variable air volume control unit 54. However, a method of adjusting the air passage cross sectional area of the air volume control unit 37 by a throttle blade mechanism, a butterfly valve, or the like may be employed.

It is also conceivable that the damper for the freezing chamber is provided in the middle of the air passage on the side of the freezing chamber and the damper for the freezing chamber is closed during the refrigerating chamber alone cooling operation to directly suppress the backflow chiller 35 to the freezing chamber. However, in order to install the damper for the freezer compartment in the freezer compartment, the damper for the freezer compartment is enlarged so that the ventilation resistance of the freezer compartment is not increased. In consideration of the installation space, it is preferable to provide the variable air volume control unit 54 in the partition member 53 to suppress the backflow into the freezing chamber 3. Since the frost grows in the cooler 16, the amount of air passing through the cooler 16 changes during the single cooling operation of the cold storage chamber, and the amount of air flowing backward from the freezing chamber cool air return port 5 to the freezing chamber 3 also changes .

When the refrigerator compartment only cooling operation is started, the variable air volume controller 54 assumes a temperature change of the freezer compartment temperature 44 shown in the graph of FIG. 9C and opens the flap at a predetermined opening degree. When the cooling operation time becomes long, the frost grows in the cooler 16, so that the phenomenon that the air volume of the reverse flow cooler 35 increases and rises as the freezing compartment temperature 46 is seen. In such a case, the flap opening degree of the variable air volume control section 54 is increased to increase the air flow rate control flow so that the temperature rise rate of the freezing chamber can be adjusted in advance. 9 (b), the maximum opening size of the variable air volume control section 54 is made smaller than the cross sectional area of the air passage becf blown into the refrigerating chamber 4 at least.

Since the frost cooling operation shown in Fig. 4B is also a cooling operation circulating through the refrigerating chamber 4, a part of the cool air circulating on the refrigerating chamber 4 side flows backward from the freezing room cool air return port 5 to the freezing chamber 3 A phenomenon occurs. When the temperature detected by the freezer compartment temperature sensor exceeds the predetermined value due to the back flow during the frost use cooling operation, the frost use cooling operation is stopped and the compressor 22 is stopped The control unit may be further provided with a control means for operating.

In the defrosting operation in which the refrigerator compartment cooling operation, the frost use refrigeration operation and the refrigerator compartment fan 14 are operated, the air volume controller 37 is provided for the purpose of suppressing a part of the reverse cooling air 35 circulating in the refrigerator compartment 4, Or a variable air volume control unit 54 are provided. In addition to the suppression of the reverse flow cooler 35, the amount of air blown into the freezing chamber 3 during the freezing operation can be increased. For example, in the case of rapid freezing operation, when the refrigerating compartment fan 14 is also operated in addition to the freezing compartment fan 13, and the refrigerating compartment damper 40 is opened, the air volume obtained when only the freezing compartment fan 13 is operated In addition, it can be increased by the amount of air passing through the air volume control unit 37 or the variable air volume control unit 54, so that the cooling performance during rapid freezing operation is enhanced.

As described above, according to the respective constructions described as the embodiments of the present invention, in a refrigerator having a single cooler, a refrigerator fan, a freezer compartment fan, and a refrigerator compartment damper, the refrigerator compares the freezer compartment So that the refrigerating chamber can be cooled only in the refrigerating compartment by increasing the energy saving. Further, it is possible to suppress frost generated on the surface of the freezer compartment or the frozen food by suppressing the back flow to the freezer compartment, which is generated when the refrigerating compartment is subjected to the sole cooling operation, so that energy conservation and preservability of frozen food can be improved.

In addition, not only the refrigerating chamber alone cooling operation in consideration of energy saving but also the refrigerating chamber rapid cooling operation in which the cold circulation path is similar can be realized.

1: Refrigerator body
2: freezing room cold air outlet
3: freezing room (freezing temperature room, storage room)
3f: Discharge air passage of the freezing chamber (freezer compartment blowing passage, air passage)
4: refrigerator room (refrigerator temperature room, storage room)
4f: discharge air passage (refrigerating compartment blowing passage, air passage)
5: Freezer cooler return port
6: First cold room cold air outlet
7: Freezer door
8: Refrigerator door
9: Insulation partition wall
10: Refrigerator compartment door storage part
11: Beverage container
12: partition part
13: freezer compartment fan (freezing temperature compartment blower, second blower)
13a, 14a: fan front part
14: fridge fan (cold room temperature chamber blower, first blower)
15: First refrigerating compartment air passage
16: Cooler
17: second refrigerator compartment
18: Fan support member
19: Shelf
20: storage case
21: Wind
22: Compressor
23, 24: protrusions (boundaries)
25: Cold room return to cold room
26: second cold room cold air outlet
27: Returning to the refrigerator compartment
28: Trough (water tray)
29: Radiator
30: throttle (decompression means)
31: Piping
33: cold air
35: reverse flow cooler
37:
38: Flow control flow
40: Refrigerating chamber damper (refrigerator room cooler adjusting means)
41: defrost heater (heating means)
42: seal material
43: Refrigerator room temperature
44, 45, 46, 47: Freezer temperature
50: Control device
51: Cutout section
52: partition member
53: partition member
54: variable air volume control unit
55: Refrigeration room air volume
56: Freezer room air volume
57: flap

Claims (4)

1. A refrigerator having a plurality of storage rooms, a first blower and a second blower for blowing cold air to each of the plurality of storage rooms,
Wherein the first blower is installed in a wind path and the air passage in which the second blower is installed is disposed adjacent to a part of the air passage with a boundary therebetween and the discharge side of the first blower of the air passage in which the first blower is installed, And an air volume control unit for connecting air paths to each other is provided on the boundary portion where the discharge side of the second blower of the air passage in which the second blower is installed is adjacent. A freezer compartment fan for blowing cool air to the freezer compartment; a freezer compartment blower installed with the freezer compartment fan; and a freezer compartment blower for blowing cool air to the freezer compartment, 1. A refrigerator comprising: an air duct; a fan support member for supporting the refrigerator compartment fan and the freezer compartment fan; and a partition provided in front of the refrigerator compartment fan and the freezer compartment fan,
The discharge side of the refrigerator compartment fan and the discharge side of the freezer compartment fan of the refrigerating compartment fan compartment are arranged so that at least a part of each other is adjacent to the fan support member and the partition part with a boundary portion therebetween,
The boundary between the refrigerator compartment blowing passage and the freezing compartment blowing passage is provided with one or both of a protruding portion protruding from the fan supporting member toward the partitioning portion or a protruding portion protruding from the partitioning portion toward the fan supporting member , And a part of the boundary portion is provided with an air flow rate control section which communicates the refrigerating compartment blowing passage with the freezing compartment blowing passage. 3. The method of claim 2,
The air-
When a protruding portion protruding from the fan supporting member toward the partitioning portion side is provided, a gap between the protruding portion and the partitioning portion,
When a protruding portion protruding from the partition portion toward the fan supporting member is provided between the protruding portion and the fan supporting member,
Wherein when the protrusions are provided on both sides of the fan support member and the partitioning portion, the protrusions are provided between the protrusions. 4. The method according to any one of claims 1 to 3,
Wherein the air volume control unit comprises a variable air volume control unit for varying the amount of cooling air passing through the air volume control unit.

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