JP7372644B2 - refrigerator - Google Patents

Description

The present invention relates to a refrigerator, and particularly to a refrigerator having a plurality of small storage compartments formed by partitioning storage compartments.

In a typical refrigerator, a storage chamber is formed inside a heat insulating box having a heat insulating structure, and the storage chamber is cooled to a refrigerating temperature range or a freezing temperature range. Specifically, the refrigeration cycle that cools the storage room consists of a compressor, a condenser, an expansion means, and an evaporator, and the evaporator cools the air in the cooling room. Then, the air cooled by the evaporator is blown into the storage chamber by the blower, thereby cooling the storage chamber to a predetermined temperature range.

The compressor and blower of the refrigeration cycle are controlled by a control device that is a CPU. Specifically, if the internal temperature of the storage compartment detected by the temperature sensor is higher than the ON set temperature, the control device operates the compressor and the blower to supply cold air to the storage compartment. On the other hand, if the internal temperature of the storage room is lower than the off set temperature, the control device stops the compressor and the blower. By operating the compressor and the blower in this manner, the internal temperature of the storage room is maintained within a predetermined temperature range.

Japanese Patent Application Publication No. 10-197129 JP2011-52934A

However, with the above-described method for cooling a refrigerator, it may be difficult to suitably cool a refrigerator having a small storage compartment in which the storage compartment is partitioned by a partition wall.

Specifically, when a user stores high-temperature food in one of the small storage compartments, the internal temperature of only the small storage compartment in which the high-temperature food is stored rises, and the internal temperature of the other small storage compartments increases. does not rise that much. Therefore, it is difficult to detect an increase in the temperature inside the small storage room using a temperature sensor that detects the temperature inside the storage room as a whole.

Further, even if the temperature sensor detects an increase in the internal temperature of the small storage room, the blower blows cold air to the entire storage room, so the small storage room cannot be intensively cooled.

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to provide a refrigerator that can selectively and intensively cool a small storage compartment formed into compartments. be.

The refrigerator of the present invention includes a plurality of small freezer compartments separated by a plate-shaped internal compartment wall to constitute a freezer compartment, and a refrigeration cycle cooler that cools air blown into the small freezer compartment. A blower that blows the air toward the freezer compartment, an air path through which the air blown from the blower passes, a movable shielding wall that blocks the air path, and an internal temperature of the small freezer room. a temperature sensor that detects the temperature sensor; and a control device that controls the refrigeration cycle, the blower, and the shielding wall based on the output of the temperature sensor; When the average temperature of the room is lower than the off set temperature, the compressor and the blower of the refrigeration cycle are stopped, and when the average temperature is higher than the on set temperature, the compressor and the blower are operated; If the internal temperature of any of the small freezer compartments detected by the temperature sensor is higher than the first ON set temperature that is set higher than the ON set temperature, the air flow connected to any of the small freezer compartments is The shielding wall installed in the passageway is opened, the compressor and the blower are operated to lower the internal temperature of the small freezer compartment, and the temperature of any of the small freezer compartments detected by the temperature sensor is reduced. If the internal temperature is higher than the second set temperature that is set higher than the first ON set temperature, the OFF set temperature is set to the low temperature side, and the internal temperature of any of the small freezer compartments is lowered. is characterized in that the air is blown into any of the small freezer compartments until the temperature becomes lower than the off set temperature set on the low temperature side.

In the refrigerator of the present invention, the control device may cause the internal temperature of any of the small freezer compartments detected by the temperature sensor to match the first on-set temperature even if the average temperature is lower than the on-set temperature. If the temperature is higher than the temperature, the shielding wall connected to one of the small freezer compartments is opened, and the compressor and the blower are operated.

In the refrigerator of the present invention, the control device further includes a shielding device that drives the shielding wall, and the shielding device includes a rotating plate in which a sliding groove is formed along the circumferential direction, and a rotating plate that is engaged with the sliding groove. The present invention is characterized in that it has a cam formed with a mating moving shaft and rotatably connected to the shielding wall, and a motor that rotates the rotary plate.

In the refrigerator of the present invention, the control device is characterized in that when opening the shielding wall connected to any of the small freezer compartments , the control device closes the other shielding walls.

In the refrigerator of the present invention, the shielding wall is arranged between each of the small freezer compartments and the blower.

The refrigerator of the present invention includes a plurality of small freezer compartments separated by a plate-shaped internal compartment wall to constitute a freezer compartment, and a refrigeration cycle cooler that cools air blown into the small freezer compartment. A blower that blows the air toward the freezer compartment, an air path through which the air blown from the blower passes, a movable shielding wall that blocks the air path, and an internal temperature of the small freezer room. a temperature sensor that detects the temperature sensor; and a control device that controls the refrigeration cycle, the blower, and the shielding wall based on the output of the temperature sensor; When the average temperature of the room is lower than the off set temperature, the compressor and the blower of the refrigeration cycle are stopped, and when the average temperature is higher than the on set temperature, the compressor and the blower are operated; If the internal temperature of any of the small freezer compartments detected by the temperature sensor is higher than the first ON set temperature that is set higher than the ON set temperature, the air flow connected to any of the small freezer compartments is The shielding wall installed in the passageway is opened, the compressor and the blower are operated to lower the internal temperature of the small freezer compartment, and the temperature of any of the small freezer compartments detected by the temperature sensor is reduced. If the internal temperature is higher than the second set temperature, which is set higher than the first ON set temperature, the OFF set temperature is set to the low temperature side, and the internal temperature of any of the small freezer compartments is increased. is characterized in that the air is blown into any of the small freezer compartments until the temperature becomes lower than the off set temperature set on the low temperature side. Thereby, according to the refrigerator of the present invention, the storage compartment can be selectively and intensively cooled. For example, when a user stores high-temperature items in a storage room such as a refrigerator, they can open the shielding device connected to the refrigerator and operate the compressor and blower of the refrigeration cycle to concentrate on the refrigerator. It is possible to supply cold air to cool the stored items. In other words, even in refrigerators with multiple storage compartments, such as the first storage compartment, second storage compartment, third storage compartment, and fourth storage compartment, the same applies when the storage compartments are divided into multiple small storage compartments. Can be controlled.

In the refrigerator of the present invention, the control device may cause the internal temperature of any of the small freezer compartments detected by the temperature sensor to match the first on-set temperature even if the average temperature is lower than the on-set temperature. If the temperature is higher than the temperature, the shielding wall connected to one of the small freezer compartments is opened, and the compressor and the blower are operated. Thereby, according to the refrigerator of the present invention, even when the average internal temperature of the storage compartment is lower than the ON setting temperature, it is possible to intensively cool the small storage compartment in which high-temperature stored items are stored.

In the refrigerator of the present invention, the control device further includes a shielding device that drives the shielding wall, and the shielding device includes a rotating plate in which a sliding groove is formed along the circumferential direction, and a rotating plate that is engaged with the sliding groove. The present invention is characterized in that it has a cam formed with a mating moving shaft and rotatably connected to the shielding wall, and a motor that rotates the rotary plate. Thereby, according to the refrigerator of the present invention, the shielding wall can be opened and closed with a simple configuration.

In the refrigerator of the present invention, the control device is characterized in that when opening the shielding wall connected to any of the small freezer compartments , the control device closes the other shielding walls. Thereby, according to the refrigerator of the present invention, by closing the other shielding walls, the small storage compartment to be cooled can be intensively cooled.

In the refrigerator of the present invention, the shielding wall is arranged between each of the small freezer compartments and the blower. Thereby, according to the refrigerator of the present invention, storage compartments such as refrigerator compartments can be selectively and intensively cooled.

1 is a front external view of a refrigerator according to an embodiment of the present invention. 1 is a side sectional view showing a schematic structure of a refrigerator according to an embodiment of the present invention. It is a figure showing a refrigerator concerning an embodiment of the present invention, and is an enlarged side sectional view showing the vicinity of a cooling room. It is a figure which shows the shielding device with which the refrigerator based on embodiment of this invention is equipped, (A) is an exploded perspective view which shows a shielding device, and (B) is a perspective view which shows a cam. It is a figure which shows the shielding device with which the refrigerator based on embodiment of this invention is equipped, (A) is an exploded perspective view which partially shows the shielding device, and (B) is an exploded perspective view which shows the structure in which a cam is accommodated. It is. It is a figure which shows the shielding device with which the refrigerator based on embodiment of this invention is equipped, (A) shows the shielding device in which each shielding wall was made into an open state, and (B) shows the shielding device in which each shielding wall was made into a closed state. Show the device. It is a front view of a freezer compartment supply air passage of a refrigerator according to an embodiment of the present invention. FIG. 1 is a block diagram showing a connection configuration of a refrigerator according to an embodiment of the present invention. It is a flowchart showing the cooling operation of the refrigerator according to the embodiment of the present invention. In the cooling operation of the refrigerator according to the embodiment of the present invention, it is a flowchart showing cooling of the upper right freezer compartment. In the cooling operation of the refrigerator according to the embodiment of the present invention, it is a diagram showing an air path when cooling the upper right freezer compartment. In the cooling operation of the refrigerator according to the embodiment of the present invention, it is a flowchart showing cooling of the lower right freezer compartment. In the cooling operation of the refrigerator according to the embodiment of the present invention, it is a diagram showing an air path when cooling the lower right freezer compartment. In the cooling operation of the refrigerator according to the embodiment of the present invention, it is a flowchart showing cooling of the upper left freezer compartment. In the cooling operation of the refrigerator according to the embodiment of the present invention, it is a diagram showing an air path when cooling the upper left freezer compartment. In the cooling operation of the refrigerator according to the embodiment of the present invention, it is a flowchart showing cooling of the lower left freezer compartment. In the cooling operation of the refrigerator according to the embodiment of the present invention, it is a diagram showing an air path when cooling the lower left freezer compartment.

Hereinafter, a refrigerator 10 according to an embodiment of the present invention will be described in detail based on the drawings. In the following description, the same members are basically given the same reference numerals, and repeated description will be omitted. Furthermore, in the following description, each direction of up, down, front, back, left, and right will be used as appropriate, but left and right refers to the left and right when the refrigerator 10 is viewed from the front.

FIG. 1 is a front external view showing a schematic structure of a refrigerator 10 of this embodiment. As shown in FIG. 1, the refrigerator 10 includes a heat insulating box body 11 as a main body, and a storage chamber for storing food and the like is formed inside the heat insulating box body 11. The storage compartments include a refrigerator compartment 15 at the top, a freezer compartment 17 at the bottom, and a vegetable compartment 20 at the bottom.

The freezer compartment 17 is divided into an upper right freezer compartment 171, a lower right freezer compartment 172, a lower left freezer compartment 173, and an upper left freezer compartment 174, which are small storage compartments. The upper right-hand freezer compartment 171, the lower right-hand freezer compartment 172, the lower left-hand freezer compartment 173, and the upper left-hand freezer compartment 174 are partitioned in a substantially cross shape by a plate-shaped compartment wall 18 made of synthetic resin. In the following description, the upper right freezer compartment 171, the lower right freezer compartment 172, the lower left freezer compartment 173, and the upper left freezer compartment 174 may be simply referred to as small freezer compartments.

The front surface of the heat insulating box 11 is open, and a heat insulating door 21 etc. is provided in the opening corresponding to each of the storage compartments so as to be openable and closable. Specifically, the heat insulating door 21 divides and closes the front surface of the refrigerator compartment 15 in the left and right direction, and the upper and lower outer ends of the heat insulating door 21 in the width direction are rotatably attached to the heat insulating box 11. .

Further, the front opening of the freezer compartment 17 is closed with a heat insulating door 23, and the front opening of the vegetable compartment 20 is closed with a heat insulating door 25. As the heat insulating door 23 and the heat insulating door 25, either a pull-out door or a revolving door can be adopted.

FIG. 2 is a side sectional view showing a schematic structure of the refrigerator 10. A heat insulating box body 11, which is the main body of the refrigerator 10, includes an outer box 12 made of steel plate with an open front, and an inner box 13 made of synthetic resin with an open front, disposed with a gap inside the outer box 12. It is composed of. A gap between the outer box 12 and the inner box 13 is filled and foamed with a heat insulating material 14 made of foamed polyurethane. Note that the above-described heat-insulating door 21 and the like also employ the same heat-insulating structure as the heat-insulating box 11.

The refrigerator compartment 15 and the freezer compartment 17 located below the refrigerator compartment 15 are separated by a heat insulating partition wall 42. The freezer compartment 17 and the vegetable compartment 20 are separated by a heat insulating partition wall 43.

On the back side of the refrigerator compartment 15, a refrigerator compartment supply air passage 29 is formed, which is partitioned by a partition body 65 made of synthetic resin and supplies cold air to the refrigerator compartment 15. The partition body 65 is formed with an air outlet 33 that allows cold air to flow into the refrigerator compartment 15 .

A freezer compartment supply air path 31 is formed on the back side of the freezer compartment 17 to allow cold air cooled by the cooler 45 to flow into the freezer compartment 17. A cooling chamber 26 is formed further to the back side of the freezer compartment supply air passage 31, and a cooler 45, which is an evaporator for cooling the air circulating inside the refrigerator, is arranged inside the cooling chamber 26. . The freezer compartment supply air passage 31 is a space surrounded from the front and rear by the front cover 67 and the partition body 66.

The cooler 45 is connected via a refrigerant pipe to a compressor 44, a radiator (not shown), and a capillary tube (not shown) as an expansion means, and constitutes a vapor compression type refrigeration cycle circuit.

FIG. 3 is a side sectional view showing the structure around the cooling chamber 26 of the refrigerator 10. The cooling chamber 26 is provided inside the heat insulating box 11 on the back side of the freezer compartment supply air passage 31. The cooling chamber 26 and the freezing chamber 17 are separated by a partition body 66 made of synthetic resin.

The freezer compartment supply air passage 31 formed in front of the cooling compartment 26 is a space formed between the cooling compartment 26 and a synthetic resin front cover 67 assembled in front of the cooling compartment 26, and is cooled by the cooler 45. This serves as an air path through which cold air flows into the freezer compartment 17. The front cover 67 is formed with an air outlet 34 that is an opening that blows out cold air into the freezer compartment 17 .

A return port 38 for returning air from the freezing compartment 17 to the cooling compartment 26 is formed on the lower back side of the freezing compartment 17. A return port 28 is formed below the cooling chamber 26, which is connected to the return port 38 and sucks the return cold air from each storage chamber into the cooling chamber 26. The cold air that returns via the return port 39 of the vegetable compartment 20 (see FIG. 2) and the vegetable compartment return air passage 37 also flows into the return port 28 .

A defrosting heater 46 is provided below the cooler 45 as a defrosting means for melting and removing frost attached to the cooler 45. The defrosting heater 46 is an electric resistance heating type heater.

At the upper part of the cooling chamber 26, an air blowing port 27, which is an opening connected to each storage chamber, is formed. The air outlet 27 is an opening through which cold air cooled by the cooler 45 flows, and allows the cooling chamber 26 to communicate with the refrigerator compartment supply air passage 29 and the freezer compartment supply air passage 31. A blower 47 is disposed in the air outlet 27 to send out cold air from the front toward the freezer compartment 17 and the like.

A shielding device 70 is provided outside the air outlet 27 of the cooling chamber 26 to appropriately block the air passage connected from the air outlet 27. The shielding device 70 is covered from the front with a front cover 67. The specific configuration of the shielding device 70 will be described later.

Although not shown in FIG. 3, a damper may be interposed in the refrigerator compartment supply air passage 29. By doing so, the shielding device 70 and the damper can suitably blow cold air into each storage room.

The configuration of the shielding device 70 will be described with reference to FIG. 4. 4(A) is an exploded perspective view of the shielding device 70, and FIG. 4(B) is a perspective view showing the cam 61.

Referring to FIG. 4(A), the shielding device 70 mainly includes a shielding wall 71, a support base 63, a rotating plate 73, and a shielding wall drive mechanism 60.

The shielding device 70 is a device that shields the air path of the cold air blown by the blower 47. When the shielding device 70 is in an open state, the air passages connecting the cooling chamber 26 and each storage room are communicated with each other, and when the shielding device 70 is in a closed state, the air passages are blocked.

The blower 47 is disposed at the center of the rear surface of the support base 63 via fastening means such as screws. The blower 47 includes, for example, a centrifugal fan such as a turbo fan and a blower motor that rotates the centrifugal fan, and blows cold air outward in the radial direction.

The shielding wall 71 is a rectangular plate-like member made of synthetic resin, and has a long side along the tangential direction of the outer edge of the rotating plate 73. The shielding wall 71 is rotatably attached near the peripheral edge of the support base 63. A plurality of shielding walls 71 (four in this embodiment) are provided. The shielding wall 71 is arranged in a path through which cold air blown by the blower 47 flows, and appropriately shields the air path.

A frame portion 83 is adjacent to the shielding wall 71 on the inside in the radial direction. The frame portion 83 is made of synthetic resin and is formed into a frame shape, and is arranged on the rear surface of the support base 63 so as to surround the blower 47 . The frame-shaped part 83 is arranged corresponding to the shielding wall 71, and the shielding wall 71 closes the opening of the frame-shaped part 83, thereby closing the air passage.

The shielding wall drive mechanism 60 that opens and closes the shielding wall 71 described above includes a rotating plate 73, a cam 61, and a drive motor (not shown) that rotates the rotating plate 73.

The rotating plate 73 has a substantially disc-shaped shape when viewed from the rear, and is rotatably disposed on the support base 63. A slide groove 80 for rotating the shielding wall 71 is formed in the rotating plate 73. The slide groove 80 is formed on the rear surface of the rotary plate 73 as a bottomed groove surrounded by ribs. When viewing the rotary plate 73 from the rear, the slide groove 80 is formed in a meandering manner along the circumferential direction. A gear groove for transmitting torque is formed on the peripheral edge of the rotating plate 73. The control device 50 drives the drive motor to rotate the rotary plate 73, thereby opening and closing the shielding wall 71.

Referring to FIG. 4(B), cam 61 is a flat rectangular parallelepiped-shaped member made of synthetic resin. The rotational connection portion 48 is formed by making the right end of the cam 61 protrude rearward. The rotary connection portion 48 is formed with a hole through which a pin 69 (described later) can be inserted. Further, a moving shaft 76 is formed which projects from the front surface of the left end side of the cam 61 in a substantially cylindrical shape. The moving shaft 76 engages with the slide groove 80 of the rotating plate 73 described above, and slides on the slide groove 80 under usage conditions. In order to enable this sliding movement, the diameter of the moving shaft 76 is set to be approximately the same as or slightly shorter than the radial width of the slide groove 80.

The related structure of the shielding wall 71, the support base 63, and the cam 61 will be described with reference to FIG. FIG. 5(A) is an exploded perspective view of the shielding wall 71, the support base 63, and the cam 61 seen from the right rear side, and FIG. 5(B) is an exploded perspective view of the rotating coupling portion 68 and the cam 61 seen from the right front side. It is an exploded perspective view.

Referring to FIG. 5(A), the shielding wall 71 is formed with a rotation connecting portion 68 that projects obliquely from the base end of the shielding wall 71. As shown in FIG. A hole through which a pin 69 can be inserted is formed in the rotation connecting portion 68 . Further, at the front end portions of both upper and lower side surfaces of the shielding wall 71, rotational connecting portions 64 that protrude in a substantially cylindrical shape are formed. The rotation connecting portion 64 is inserted into a cylindrical concave portion 85 formed in the inner wall of the frame portion 83 . With this configuration, the shielding wall 71 is rotatably provided on the support base 63.

A through hole 86 is formed by penetrating the support base 63 in a rectangular shape. The rotation connecting portion 68 of the shielding wall 71 is inserted into the through hole 86 from the rear. The rotation connecting portion 48 of the cam 61 is also inserted into the through hole 86 from the front. A pin 69 is inserted into the hole of the rotation connection part 68 of the shielding wall 71 and the hole of the rotation connection part 48 of the cam 61. With this configuration, the shielding wall 71 and the cam 61 are rotatably connected with the support base 63 in between.

Referring to FIG. 5(B), a cam storage portion 62 is formed on the front surface of the support base 63. The cam storage portion 62 is a rectangular area surrounded by ribs, and the above-described through hole 86 is formed inside the cam storage portion 62 . The cam 61 is housed inside the cam housing section 62 and slides. The direction in which the cam 61 slides inside the cam storage portion 62 is the left-right direction here, or in other words, the radial direction of the rotating plate 73 shown in FIG. 4(A).

With the above configuration, the moving shaft 76 slides within the slide groove 80 by driving the drive motor to rotate the rotary plate 73. As a result, the cam 61 slides within the cam storage portion 62. By sliding the cam 61, the shielding wall 71 can be rotated around the pin 69. Specifically, when the cam 61 is slid toward the peripheral edge of the support base 63, the shielding wall 71 rotates about the rotational connection portion 64 to be in an upright state, and the shielding wall 71 is moved toward the supporting base 63. The state is perpendicular to the main surface of the base body 63. On the other hand, when the cam 61 is slid toward the center of the support base 63, the shielding wall 71 rotates about the rotational connection portion 64 so as to be in a lying state, and the shielding wall 71 becomes the main body of the support base 63. It becomes approximately parallel to the surface.

Therefore, by forming the slide groove 80 on the peripheral edge side of the rotating plate 73, the shielding wall 71 can be brought into a closed state. On the other hand, if the slide groove 80 is formed on the center side of the rotary plate 73, the shielding wall 71 can be placed in an open state. By utilizing this principle and selecting the meandering shape of the slide groove 80, the open/closed state of the shielding wall 71 can be set arbitrarily. This allows the shielding wall 71 to be fully opened or fully closed without employing a complicated configuration.

A configuration in which the shielding device 70 opens and closes the air passage connected to the blower 47 will be described with reference to FIG. 6. FIG. 6(A) shows the shielding device 70 in a fully open state, and FIG. 6(B) shows the shielding device 70 in a fully closed state.

FIG. 6(A) is a front view of the shielding device 70 in a fully open state. The shielding device 70 has an upper right shielding wall 711, a lower right shielding wall 712, a lower left shielding wall 713, and an upper left shielding wall 714 as the aforementioned shielding walls 71.

Here, the upper right shielding wall 711 to the upper left shielding wall 714 are in a lying state. That is, the upper right shielding wall 711 to the upper left shielding wall 714 are in a state of lying so as to be substantially parallel to the main surface of the support base 63 shown in FIG. 4(A), and the blower 47 blows air. Do not block air. Therefore, the air blown by the blower 47 is blown toward the surroundings without being blocked by the upper right shielding wall 711 or the upper left shielding wall 714.

FIG. 6(B) is a front view of the shielding device 70 in a fully closed state. Here, the upper right shielding wall 711 to the upper left shielding wall 714 are in an upright state. That is, the upper right shielding wall 711 to the upper left shielding wall 714 stand upright with respect to the main surface of the support base 63 shown in FIG. 4(A), and shield the air blown by the blower 47. Therefore, the air blown by the blower 47 is blocked by the upper right shielding wall 711 to the upper left shielding wall 714, and is not blown toward the surroundings.

FIG. 7 is a diagram of the above-described freezer compartment supply air passage 31 seen from the front. By dividing the freezer compartment supply air passage 31 shown in FIG. 3 with the air passage partition wall 49, an upper right air passage 311 to an upper left air passage 314 are formed.

The upper right air passage 311 is an air passage that connects the blower 47 and the upper right freezer compartment 171 via the air outlet 341. By opening the upper right shielding wall 711, air flows through the upper right air passage 311.

The lower right air passage 312 is an air passage that connects the blower 47 and the lower right freezer compartment 172 via the outlet 342. By opening the lower right shielding wall 712, air flows through the lower right air passage 312.

The lower left air passage 313 is an air passage that connects the blower 47 and the lower left freezer compartment 173 via the air outlet 343. By opening the lower left shielding wall 713, air flows through the lower left air passage 313.

The upper left air passage 314 is an air passage that connects the blower 47 and the upper left freezer compartment 174 via the air outlet 344 . By opening the upper left shielding wall 714, air flows through the upper left air passage 314.

Further, a temperature sensor is individually installed in each small storage room. Specifically, an upper right temperature sensor 501 is disposed inside the upper right freezer compartment 171, and a lower right temperature sensor 502 is disposed inside the lower right freezer compartment 172. Further, a lower left side temperature sensor 503 is disposed in the lower left side freezing chamber 173, and an upper left side temperature sensor 504 is disposed in the upper left side freezing chamber 174.

FIG. 8 is a block diagram showing the connection configuration of the refrigerator 10. The refrigerator 10 includes a control device 50 that is a CPU, an upper right temperature sensor 501 to an upper left temperature sensor 504, a timer 92, a compressor 44, a blower 47, a motor 51, and a defrosting heater 46. The upper right temperature sensor 501 to the upper left temperature sensor 504 and the timer 92 are connected to an input terminal of the control device 50. The compressor 44, the blower 47, the motor 51, and the defrosting heater 46 are connected to an output terminal of the control device 50.

The upper right temperature sensor 501 to the upper left temperature sensor 504 measure the temperature inside the upper right freezer compartment 171 to the upper left shielding wall 714 shown in FIG. Specifically, the upper right temperature sensor 501 measures the internal temperature of the upper right freezer compartment 171 and transmits information indicating the internal temperature to the control device 50. The lower right temperature sensor 502 measures the internal temperature of the lower right freezer compartment 172 and transmits information indicating the internal temperature to the control device 50. The lower left side temperature sensor 503 measures the internal temperature of the lower left side freezer compartment 173 and transmits information indicating the internal temperature to the control device 50 . The upper left temperature sensor 504 measures the internal temperature of the upper left freezer compartment 174 and transmits information indicating the internal temperature to the control device 50.

The timer 92 measures the cooling time for cooling the refrigerator compartment 15, the upper right-hand freezer compartment 171 to the upper left-hand freezer compartment 174, and the vegetable compartment 20, the operating time of the defrosting heater 46, etc., and controls information indicating the time. and transmit it to device 50.

The compressor 44 compresses the refrigerant used in the refrigeration cycle, as described above, according to instructions from the control device 50.

The blower 47 blows the cold air cooled by the cooler 45 of the refrigeration cycle toward each storage room, as described above, in accordance with instructions from the control device 50.

The motor 51 rotates the rotating plate 73 of the shielding device 70 shown in FIG. 4A by a predetermined angle in accordance with instructions from the control device 50, and drives the opening/closing operation of the shielding wall 71 of the shielding device 70.

The defrosting heater 46 warms the air inside the cooling chamber 26 by being energized according to instructions from the control device 50 .

Based on the flowchart shown in FIG. 9 and with reference to the above-mentioned figures, a method of operating the refrigerator 10 for effectively cooling the upper right freezer compartment 171 to the upper left freezer compartment 174 shown in FIG. 7 will be described.

FIG. 9 is a flowchart showing an overall method of operating the refrigerator 10, and FIGS. 10 to 17 are a flowchart and an air path diagram showing a method of intensively cooling each small cooling chamber. Specifically, FIGS. 10 and 11 are a flowchart and an air path diagram showing a method for preferentially cooling the upper right freezing chamber 171. 12 and 13 are a flowchart and an air path diagram showing a method for preferentially cooling the lower right freezing chamber 172. FIGS. 14 and 15 are a flowchart and an air path diagram showing a method for preferentially cooling the upper left freezer compartment 174. FIGS. 16 and 17 are a flowchart and an air path diagram showing a method of preferentially cooling the lower left freezer compartment 173.

First, a method of operating the refrigerator 10 according to the present embodiment will be schematically explained. When refrigerator 10 cools freezer compartment 17, control device 50 controls compressor 44, blower 47, and shielding device 70 based on predetermined on-set temperature and off-set temperature. Specifically, when the internal temperature of the freezer compartment 17 rises to the ON set temperature, the control device 50 operates the compressor 44 and the blower 47, and fully opens the shielding device 70 as shown in FIG. 6(A). state. On the other hand, when the internal temperature of the freezer compartment 17 falls to the off set temperature, the control device 50 stops the operation of the compressor 44 and the blower 47. Through such cooling control, the freezing chamber 17 is cooled to a predetermined freezing temperature range.

Furthermore, in this embodiment, referring to FIG. 7, the internal temperatures of the upper right-hand freezer compartment 171 to the upper left-hand freezer compartment 174, which are small storage compartments, are individually measured, and the small storage compartments with high temperatures are prioritized. It is cooling down. By doing so, even when stored items such as high-temperature foods are stored in either the upper right-hand freezer compartment 171 or the upper left-hand freezer compartment 174, the stored items can be effectively cooled. .

Here, each set temperature used when explaining the operating method of the refrigerator 10 will be explained. In the following, the first to fifth on-set temperatures and the first to fifth off-set temperatures will be used.

The first ON set temperature and the first OFF set temperature are set temperatures that are referenced when the entire freezing chamber 17 is operated for cooling.

The second ON set temperature and the second OFF set temperature are set values of the upper right temperature sensor 501 that detects the internal temperature of the upper right freezer compartment 171. In other words, the second ON set temperature and the second OFF set temperature are set temperatures to be referred to when performing cooling operation of the upper right freezer compartment 171.

The third ON set temperature and the third OFF set temperature are set values of the lower right temperature sensor 502 that detects the internal temperature of the lower right freezer compartment 172. In other words, the third ON set temperature and the third OFF set temperature are set temperatures to be referred to when performing cooling operation of the lower right freezer compartment 172.

The fourth ON set temperature and the fourth OFF set temperature are set values of the upper left side temperature sensor 504 that detects the internal temperature of the upper left side freezer compartment 174. In other words, the fourth ON set temperature and the fourth OFF set temperature are set temperatures to be referred to when performing a cooling operation of the upper left freezer compartment 174.

The fifth ON set temperature and the fifth OFF set temperature are set values of the lower left side temperature sensor 503 that detects the internal temperature of the lower left side freezer compartment 173. In other words, the fifth ON set temperature and the fifth OFF set temperature are set temperatures to be referred to when operating the lower left freezer compartment 173 for cooling.

Here, the initial values of the first to fifth on-set temperatures are, for example, -16°C. Further, the initial values of the first to fifth off set temperatures are, for example, -20°C.

Further, in the following explanation, flags F1 to F5 indicating the temperature environment inside the refrigerator are used.

F1 is a flag that determines whether or not the entire freezer compartment 17 requires cooling operation. If F1 is set to 1, the control device 50 operates the compressor 44 and the blower 47 to cool the entire freezer compartment 17, and fully opens the shielding device 70 as shown in FIG. 6(A). state. On the other hand, if F1 is set to 0, there is no need to perform a cooling operation on the entire freezer compartment 17, so the control device 50 stops the compressor 44 and the blower 47, and as shown in FIG. 6(B). The shielding device 70 is brought into a fully closed state.

F2 is a flag indicating whether or not the upper right freezer compartment 171 requires rapid cooling. F3 is a flag indicating whether or not the lower right freezer compartment 172 requires rapid cooling. F4 is a flag indicating whether or not the upper left freezer compartment 174 requires rapid cooling. F5 is a flag indicating whether or not the lower left freezer compartment 173 requires rapid cooling. If these flags are 0, it indicates that the corresponding small freezer compartment does not require rapid cooling. On the other hand, if these flags are 1, it indicates that the corresponding small freezer compartment requires rapid cooling.

Referring to FIG. 9, in step S10, control device 50 starts normal cooling operation. That is, the control device 50 performs the cooling operation so that the freezing chamber average temperature T17 of the freezing chamber 17 falls within a predetermined freezing temperature range.

Specifically, referring to FIG. 7, the internal temperature of the upper right freezing compartment 171 measured by the upper right temperature sensor 501 is T171, and the internal temperature of the lower right freezing compartment 172 measured by the lower right temperature sensor 502 is T171. T172, the internal temperature of the lower left freezer compartment 173 measured by the lower left temperature sensor 503 is T173, and the internal temperature of the upper left freezer compartment 174 measured by the upper left temperature sensor 504 is T174, the average of the freezer compartment 17 Temperature T17 is calculated using the following equation 1.
Formula 1: T17=(T171+T172+T173+T174)/4

The control device 50 operates the compressor 44 and the blower 47 when the average temperature T17 of the freezer compartment 17 rises to the first ON setting temperature. Further, the control device 50 causes the shielding device 70 to be fully opened as shown in FIG. 6(A) by rotating the rotary plate 73 shown in FIG. 4 using the motor. Thereby, the freezer compartment 17 is entirely cooled. On the other hand, when the internal temperature of the freezer compartment 17 falls to the first off set temperature, the control device 50 stops the operation of the compressor 44 and the blower 47.

In step S11, it is determined whether the internal temperature of any of the small freezer compartments is equal to or higher than the first ON set temperature plus 6°C.

Specifically, it is determined whether any of Expressions 2 to 5 below are satisfied.
Formula 2: T171≧2nd ON setting temperature +6deg
Formula 3: T172 ≧ 3rd ON setting temperature + 6deg
Formula 4: T174 ≧ 4th ON setting temperature + 6deg
Formula 5: T173 ≧ 5th ON setting temperature + 6deg

If any of the above equations 2 to 5 is satisfied, that is, if step S11 is YES, the control device 50 moves to step S12. On the other hand, if none of Equations 2 to 5 are satisfied, that is, if step S11 is NO, the control device 50 moves to step S13.

In step S12, since one of the small freezer compartments has reached a high temperature, the control device 50 sets the rapid cooling mode and sets the rapid cooling time to 150 minutes.

In step S13, the control device 50 determines whether the rapid cooling mode is set. If the rapid cooling mode is set, that is, if step S13 is YES, the control device 50 subtracts from 150 minutes in step S14. The control device 50 performs the rapid cooling described below until the rapid cooling time exceeds 150 minutes, that is, until step S15 becomes YES. On the other hand, if the rapid cooling mode is not set, that is, if step S13 is NO, the control device 50 moves to step S18.

In step S15, while the rapid cooling time has not elapsed for 150 minutes, that is, while step S15 is NO, the control device 50 sets all flags F2, F3, F4, and F5 to 0 in step S16. Determine whether it is set. On the other hand, if the rapid cooling time has elapsed for 150 minutes, that is, if step S15 is YES, the control device 50 moves to step S17.

If all of F2, F3, F4, and F5 are set to 0 in step S16, that is, if step S16 is YES, the control device 50 moves to step S17. On the other hand, if any of F2, F3, F4, and F5 is not set to 0, that is, if step S16 is NO, the control device 50 moves to step S24.

In step S24, the control device 50 changes the first off set temperature to -28°C and changes the first on set temperature to -26°C in order to perform rapid cooling.

In step S17, the control device 50 cancels the rapid cooling mode when a predetermined time has elapsed or when the internal temperature of each small freezer compartment has been cooled to a certain level or below. Further, the control device 50 sets flags F2, F3, F4, and F5 to 0. Further, in step S17, the control device 50 changes the first off set temperature to the normal setting, and returns the first on set temperature to the normal setting. Furthermore, in step S17, the control device 50 returns all on-set temperatures and all off-set temperatures to normal settings. That is, the first to fifth on-set temperatures are set to -16°C. Further, the control device 50 sets the first to fifth off set temperatures to -20°C.

In step S18, it is determined whether the internal temperature of any of the small freezer compartments is equal to or higher than the temperature obtained by adding 2° C. to the ON set temperature of each compartment.

Specifically, it is determined whether any of Expressions 6 to 9 below are satisfied.
Formula 6: T171≧2nd ON setting temperature + 2deg
Formula 7: T172 ≧ 3rd ON setting temperature + 2deg
Formula 8: T174≧4th ON setting temperature + 2deg
Formula 9: T173 ≧ 5th ON setting temperature + 2deg

If any of the above equations 6 to 9 is satisfied, that is, if step S18 is YES, the control device 50 moves to step S19. On the other hand, if none of Equations 6 to 9 are satisfied, that is, if step S18 is NO, the control device 50 moves to step S25.

In step S19, the control device 50 determines whether 0 is set in F1. If F1 is set to 0, that is, if step S19 is YES, the control device 50 moves to step S20. On the other hand, if F1 is not set to 0, that is, if step S19 is NO, the control device 50 moves to step S22.

In step S20, the shielding device 70 brings the shielding wall 71 into a fully closed state, and further sets F1 to 1. Specifically, as shown in FIG. 6(B), the shielding device 70 closes all of the upper right shielding wall 711 to the upper left shielding wall 714. In step S20, by closing all of the upper right shielding wall 711 to the upper left shielding wall 714, in steps S28 to S31, which will be described later, cold air is intensively supplied only to the small freezer compartment to be cooled. Can blow air.

On the other hand, if the above-mentioned step S18 is NO, it is determined in step S25 whether the average internal temperature T17 of the freezer compartment 17 is equal to or higher than the first ON setting temperature. If the average internal temperature T17 is equal to or higher than the first ON setting temperature, that is, if step S25 is YES, the control device 50 moves to step S21. On the other hand, if the average internal temperature T17 is less than the first ON setting temperature, that is, if step S25 is NO, the control device 50 moves to step S32.

In step S32, the control device 50 determines whether the average internal temperature T17 of the freezer compartment 17 is equal to or lower than the first off setting temperature.

If the average internal temperature T17 of the freezer compartment 17 is equal to or lower than the first off set temperature, that is, if step S32 is YES, the control device 50 moves to step S33. On the other hand, if the average internal temperature T17 of the freezer compartment 17 is not below the first off set temperature, that is, if step S32 is NO, the control device 50 moves to step S23.

In step S33, since the entire freezer compartment 17 has been sufficiently cooled, the control device 50 sets the flag F1 to 0. Further, the control device 50 turns off the compressor 44 and the blower 47. Further, the control device 50 closes the upper right shielding wall 711 to the upper left shielding wall 714 of the shielding device 70, as shown in FIG. 6(B). Thereby, the control device 50 interrupts the cooling operation of the freezer compartment 17. After step S33 ends, the control device 50 moves to step S23.

In step S21, as shown in FIG. 6(A), the control device 50 fully opens the upper right shielding wall 711 to the upper left shielding wall 714 of the shielding device 70.

In step S22, the compressor 44 and the blower 47 are turned on. Thereby, referring to FIG. 2, the blower 47 blows the cold air cooled by the cooler 45, and the freezer compartment 17 is cooled.

In step S23, the control device 50 determines whether 1 is set in F1. If F1 is set to 1, that is, if step S23 is YES, the control device 50 moves to step S26. On the other hand, if F1 is not set to 1, that is, if step S23 is NO, the control device 50 returns to step S10.

In step S26, the control device 50 determines whether all of the internal temperatures T171 to T174 of the upper right-hand freezer compartment 171 to the upper left-hand freezer compartment 174 are equal to or lower than the respective ON set temperatures.

Specifically, in step S26, the control device 50 determines whether all of Expressions 10 to 13 below are satisfied.
Equation 10: T171 ≦ 2nd ON set temperature equation 11: T172 ≦ 3rd ON set temperature equation 12: T174 ≦ 4th ON set temperature equation 13: T173 ≦ 5th ON set temperature

If all of Expressions 10 to 13 are satisfied, that is, if step S26 is YES, the control device 50 moves to step S27. On the other hand, if all of Expressions 10 to 13 are not satisfied, that is, if step S26 is NO, the control device 50 moves to step S28.

In step S27, the control device 50 opens all of the upper right shielding wall 711 to the upper left shielding wall 714, and cools the freezer compartment 17 as a whole. Further, the control device 50 sets F1 to 0. After that, the control device 50 returns to step S10.

In steps S28 to S31, the control device 50 cools the upper right freezer compartment 171 to the upper left shielding wall 714 according to the internal temperature of each small freezer compartment.

Steps S28 to S31 will be explained with reference to FIGS. 10 to 17. FIG. 10 and FIG. 11 are a flowchart and an air path diagram showing step S28 of intensively cooling the upper right freezer compartment 171. FIG. 12 and FIG. 13 are a flowchart and an air path diagram showing step S29 of intensively cooling the lower right freezer compartment 172. FIGS. 14 and 15 are a flowchart and an air path diagram showing step S30 of intensively cooling the upper left freezer compartment 174. FIGS. 16 and 17 are a flowchart and an air path diagram showing step S31 of intensively cooling the lower left freezer compartment 173.

Step S28 will be described in detail with reference to FIGS. 10 and 11. FIG. 10 is a flowchart showing step S28 in detail, and FIG. 11 is a diagram showing the air path configuration in step S28. Step S28 intensively cools the upper right freezer compartment 171.

Referring to FIG. 10, step S28 described above includes steps S281 to S288, and the upper right shielding wall 711 is rapidly cooled.

In step S281, the control device 50 determines whether F2 is set to 1. F2 is a flag that determines whether rapid cooling is necessary in step S28; if F2 is set to 1, rapid cooling is necessary; if F2 is set to 0, rapid cooling is not necessary. . If F2 is set to 1, that is, if step S281 is YES, the control device 50 moves to step S282. On the other hand, if F2 is not set to 1, that is, if step S281 is NO, the control device 50 moves to step S285.

In step S282, the control device 50 sets the second off set temperature to -28°C. Here, the second off set temperature is the off set temperature set for performing cooling in step S28.

In step S283, the control device 50 determines whether the internal temperature of the upper right freezer compartment 171 is equal to or lower than the second off set temperature. If the internal temperature of the upper right freezer compartment 171 is equal to or lower than the second off set temperature, that is, if step S283 is YES, the control device 50 moves to step S284. On the other hand, if the internal temperature of the upper right freezer compartment 171 is not equal to or lower than the second off set temperature, that is, if step S283 is NO, the control device 50 moves to step S29 and stops cooling the upper right freezer compartment 171. continue.

In step S284, the control device 50 closes the upper right shielding wall 711, further sets the flag F2 to 0, and ends the rapid cooling in step S28.

On the other hand, in step S285, the control device 50 determines whether the internal temperature of the upper right freezer compartment 171 is equal to or higher than the second ON set temperature plus 2°C. Here, the temperature obtained by adding 2° C. to the second on-set temperature is the first on-set temperature described in the claims. If the internal temperature of the upper right freezer compartment 171 is equal to or higher than the second on set temperature plus 2° C., that is, if step S285 is YES, the control device 50 moves to step S286. On the other hand, if the internal temperature of the upper right freezer compartment 171 is not equal to or higher than the second on set temperature plus 2° C., that is, if step S285 is NO, the control device 50 returns to step S10.

Here, in step S285, the temperature obtained by adding 2° C. to the second on-set temperature, which is the small storage room on-set temperature set for the upper right-hand freezer compartment 171, was set as the first on-set temperature. The first on-set temperature may be a temperature obtained by adding 2° C. to the first on-set temperature set for the entire unit 17. The same applies to steps S295, S305, and S315, which will be described later.

In step S286, the control device 50 determines whether the internal temperature of the upper right freezer compartment 171 is equal to or higher than the second ON set temperature plus 6°C. Here, the temperature obtained by adding 6° C. to the second ON set temperature is the second set temperature. If the internal temperature of the upper right freezer compartment 171 is equal to or higher than the second on set temperature plus 6° C., that is, if step S286 is YES, the control device 50 moves to step S287. On the other hand, if the internal temperature of the upper right freezer compartment 171 is not equal to or higher than the second ON set temperature plus 6° C., that is, if step S286 is NO, the control device 50 moves to step S288.

Here, in step S286, the temperature obtained by adding 6° C. to the second on setting temperature set for the upper right freezing compartment 171 was set as the second on setting temperature. The first on-set temperature may be a temperature obtained by adding 6° C. to the first on-set temperature. The same applies to steps S296, S306, and S316, which will be described later.

In step S287, the control device 50 sets a flag F2 to 1.

In step S288, the control device 50 opens the upper right shielding wall 711, and proceeds to step S29.

FIG. 11 is a diagram illustrating the air path configuration in step S288. Here, the upper right shielding wall 711 is in an open state, while the lower right shielding wall 712 to the upper left shielding wall 714 are in a closed state. By configuring the shielding device 70 in this way, the cold air blown from the blower 47 can be introduced into the upper right freezer compartment 171 via the upper right air passage 311 and the air outlet 341. Therefore, even if the user stores high-temperature objects in the upper right-hand freezer compartment 171, the objects can be effectively cooled by intensively cooling the upper right-hand freezer compartment 171.

Step S29 will be described in detail with reference to FIGS. 12 and 13. FIG. 12 is a flowchart showing step S29 in detail, and FIG. 13 is a diagram showing the air path configuration in step S29. Here, the method for cooling the lower right freezing chamber 172 shown in FIG. 12 is the same as the method for cooling the upper right shielding wall 711 shown in FIG. 10.

Referring to FIG. 12, step S29 includes steps S291 to S298, and rapidly cools the lower right freezing chamber 172.

In step S291, the control device 50 determines whether F3 is set to 1. F3 is a flag that determines whether rapid cooling is necessary in step S29; if F3 is set to 1, rapid cooling is necessary; if F3 is set to 0, rapid cooling is not necessary. . If F3 is set to 1, that is, if step S291 is YES, the control device 50 moves to step S292. On the other hand, if F3 is not set to 1, that is, if step S291 is NO, the control device 50 moves to step S295.

In step S292, the control device 50 sets the third off set temperature to -28°C. Here, the third off set temperature is the off set temperature set for performing cooling in step S29.

In step S293, the control device 50 determines whether the internal temperature of the lower right freezer compartment 172 is equal to or lower than the third off setting temperature. If the internal temperature of the lower right freezer compartment 172 is equal to or lower than the third off set temperature, that is, if step S293 is YES, the control device 50 moves to step S294. On the other hand, if the internal temperature of the lower right freezer compartment 172 is not lower than the third off set temperature, that is, if step S293 is NO, the control device 50 moves to step S30 and stops the cooling of the lower right freezer compartment 172. continue.

In step S294, the control device 50 closes the lower right freezer compartment 172, further sets the flag F3 to 0, and ends the rapid cooling in step S29.

On the other hand, in step S295, the control device 50 determines whether the internal temperature of the lower right freezer compartment 172 is equal to or higher than the third ON set temperature plus 2° C. (first set temperature). If the internal temperature of the lower right freezer compartment 172 is equal to or higher than the third on set temperature plus 2° C., that is, if step S295 is YES, the control device 50 moves to step S296. On the other hand, if the internal temperature of the lower right freezer compartment 172 is not equal to or higher than the third on set temperature plus 2° C., that is, if step S295 is NO, the control device 50 returns to step S10.

In step S296, the control device 50 determines whether the internal temperature of the lower right freezer compartment 172 is equal to or higher than the third ON set temperature plus 6° C. (second set temperature). If the internal temperature of the lower right freezer compartment 172 is equal to or higher than the third on set temperature plus 6° C., that is, if step S296 is YES, the control device 50 moves to step S297. On the other hand, if the internal temperature of the lower right freezer compartment 172 is not equal to or higher than the third on set temperature plus 6° C., that is, if step S296 is NO, the control device 50 moves to step S298.

In step S297, the control device 50 sets a flag F3 to 1.

In step S298, the control device 50 opens the lower right shielding wall 712, and proceeds to step S30.

FIG. 13 is a diagram illustrating the air path configuration in step S298 described above. Here, the lower right shielding wall 712 is in an open state, while the upper right shielding wall 711, the lower left shielding wall 713, and the upper left shielding wall 714 are in a closed state. By configuring the shielding device 70 in this way, the cold air blown from the blower 47 can be introduced into the lower right freezer compartment 172 via the lower right air passage 312 and the blower outlet 342. Therefore, even if the user stores high-temperature stored items in the lower right-hand freezer compartment 172, the stored items can be effectively cooled by intensively cooling the lower right-hand freezer compartment 172.

Step S30 will be described in detail with reference to FIGS. 14 and 15. FIG. 14 is a flowchart showing step S30 in detail, and FIG. 15 is a diagram showing the air path configuration in step S30. Here, the method for cooling the upper left freezing chamber 174 shown in FIG. 14 is the same as the method for cooling the upper right shielding wall 711 shown in FIG. 10.

Referring to FIG. 14, step S30 described above includes steps S301 to S308, and rapidly cools the upper left freezer compartment 174.

In step S301, the control device 50 determines whether F4 is set to 1. F4 is a flag that determines whether rapid cooling is necessary in step S30; if F4 is set to 1, rapid cooling is necessary; if F4 is set to 0, rapid cooling is not necessary. . If F4 is set to 1, that is, if step S301 is YES, the control device 50 moves to step S302. On the other hand, if F4 is not set to 1, that is, if step S301 is NO, the control device 50 moves to step S305.

In step S302, the control device 50 sets the fourth off set temperature to -28°C. Here, the fourth off set temperature is the off set temperature set for performing cooling in step S30.

In step S303, the control device 50 determines whether the internal temperature of the upper left freezer compartment 174 is equal to or lower than the fourth off setting temperature. If the internal temperature of the upper left freezer compartment 174 is equal to or lower than the fourth off set temperature, that is, if step S303 is YES, the control device 50 moves to step S304. On the other hand, if the internal temperature of the upper left freezer compartment 174 is not equal to or lower than the fourth off set temperature, that is, if step S303 is NO, the control device 50 moves to step S31 and stops cooling the upper left freezer compartment 174. continue.

In step S304, the control device 50 closes the upper left shielding wall 714, further sets the flag F4 to 0, and ends the rapid cooling in step S30.

On the other hand, in step S305, the control device 50 determines whether the internal temperature of the upper left freezer compartment 174 is equal to or higher than the fourth ON set temperature plus 2° C. (first set temperature). If the internal temperature of the upper left freezer compartment 174 is equal to or higher than the fourth ON set temperature plus 2° C., that is, if step S305 is YES, the control device 50 moves to step S306. On the other hand, if the internal temperature of the upper left freezer compartment 174 is not equal to or higher than the fourth ON set temperature plus 2° C., that is, if step S305 is NO, the control device 50 returns to step S10.

In step S306, the control device 50 determines whether the internal temperature of the upper left freezer compartment 174 is equal to or higher than the fourth ON set temperature plus 6° C. (second set temperature). If the internal temperature of the upper left freezer compartment 174 is equal to or higher than the fourth ON set temperature plus 6° C., that is, if step S306 is YES, the control device 50 moves to step S307. On the other hand, if the internal temperature of the upper left freezer compartment 174 is not equal to or higher than the fourth ON set temperature plus 6° C., that is, if step S306 is NO, the control device 50 moves to step S308.

In step S307, the control device 50 sets a flag F4 to 1.

In step S308, the control device 50 opens the upper left shielding wall 714, and proceeds to step S31.

FIG. 15 is a diagram illustrating the air path configuration in step S308. Here, the upper left shielding wall 714 is in the open state, while the upper right shielding wall 711 to the lower left shielding wall 713 are in the closed state. With the shielding device 70 having such a configuration, the cold air blown from the blower 47 can be introduced into the upper left freezer compartment 174 via the upper left air passage 314 and the air outlet 344. Therefore, even if the user stores high-temperature stored items in the upper left freezing compartment 174, the stored items can be effectively cooled by intensively cooling the upper left freezing compartment 174.

Step S31 will be described in detail with reference to FIGS. 16 and 17. FIG. 16 is a flowchart showing step S31 in detail, and FIG. 17 is a diagram showing the air path configuration in step S31. Here, the method for cooling the lower left-hand freezer compartment 173 shown in FIG. 16 is the same as the method for cooling the upper-right shielding wall 711 shown in FIG. 10.

Referring to FIG. 16, step S31 described above includes steps S311 to S318, and rapidly cools the lower left freezing chamber 173.

In step S311, the control device 50 determines whether F5 is set to 1. F5 is a flag that determines whether rapid cooling is necessary in step S31; if F5 is set to 1, rapid cooling is necessary; if F5 is set to 0, rapid cooling is not necessary. . If F5 is set to 1, that is, if step S311 is YES, the control device 50 moves to step S312. On the other hand, if F5 is not set to 1, that is, if step S311 is NO, the control device 50 moves to step S315.

In step S312, the control device 50 sets the fifth off set temperature to -28°C. Here, the fifth off set temperature is the off set temperature set for performing cooling in step S31.

In step S313, the control device 50 determines whether the internal temperature of the lower left freezer compartment 173 is equal to or lower than the fifth off set temperature. If the internal temperature of the lower left freezer compartment 173 is equal to or lower than the fifth off set temperature, that is, if step S313 is YES, the control device 50 moves to step S314. On the other hand, if the internal temperature of the lower left freezer compartment 173 is not lower than the fifth off set temperature, that is, if step S313 is NO, the control device 50 moves to step S29 and stops the cooling of the lower left freezer compartment 173. continue.

In step S314, the control device 50 closes the lower left shielding wall 713, further sets the flag F5 to 0, and ends the rapid cooling in step S31.

On the other hand, in step S315, the control device 50 determines whether the internal temperature of the lower left freezer compartment 173 is equal to or higher than the fifth ON set temperature plus 2° C. (first set temperature). If the internal temperature of the lower left freezer compartment 173 is equal to or higher than the fifth on set temperature plus 2° C., that is, if step S315 is YES, the control device 50 moves to step S316. On the other hand, if the internal temperature of the lower left freezer compartment 173 is not equal to or higher than the fifth ON set temperature plus 2° C., that is, if step S315 is NO, the control device 50 returns to step S10.

In step S316, the control device 50 determines whether the internal temperature of the lower left freezer compartment 173 is equal to or higher than the fifth ON set temperature plus 6° C. (second set temperature). If the internal temperature of the lower left side freezer compartment 173 is equal to or higher than the fifth on-setting temperature plus 6° C., that is, if step S316 is YES, the control device 50 moves to step S317. On the other hand, if the internal temperature of the lower left freezer compartment 173 is not equal to or higher than the fifth on set temperature plus 6° C., that is, if step S316 is NO, the control device 50 moves to step S318.

In step S317, the control device 50 sets a flag F5 to 1.

In step S318, the control device 50 opens the lower left shielding wall 713, and proceeds to step S31.

FIG. 17 is a diagram illustrating the air path configuration in step S318. Here, the lower left shielding wall 713 is in the open state, while the upper right shielding wall 711, the lower right shielding wall 712, and the upper left shielding wall 714 are in the closed state. By configuring the shielding device 70 as described above, the cold air blown from the blower 47 can be introduced into the lower left side freezing chamber 173 via the lower left side air passage 313 and the blower outlet 343. Therefore, even if the user stores high-temperature stored items in the lower left-hand freezer compartment 173, the stored items can be effectively cooled by intensively cooling the lower left-hand freezer compartment 173.

According to this embodiment, even if the average internal temperature of the freezer compartment 17 is lower than the ON set temperature, the internal temperature of any of the upper right-hand freezer compartment 171 to the upper left-hand freezer compartment 174, which are small freezer compartments, is constant. If the temperature exceeds that level, the small freezer compartment is being intensively cooled. Therefore, the high-temperature stored items stored in a specific small freezer compartment can be effectively cooled, and it is possible to suppress the internal temperature of other small freezer compartments from rising.

Additionally, if the internal temperature of the small freezer compartment is 6°C or more higher than the on-set temperature, the off-set temperature is lowered to -28°C and cooling operation is performed. By doing so, the effect of intensively cooling the small freezer compartment can be made remarkable.

Furthermore, in this embodiment, since the shielding wall 71 is opened and closed by the shielding device 70 shown in FIG. 4, the shielding wall 71 is opened and closed with a simple configuration, and cold air is effectively blown into the desired small freezer compartment. be able to.

The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention.

For example, in the present embodiment described above with reference to FIG. A small freezer compartment was intensively cooled. Here, it is also possible to apply such a configuration to the refrigerator compartment 15. That is, the refrigerating room 15 can be divided into a plurality of small refrigerating compartments, and any one of the refrigerating compartments can be intensively cooled in response to a rise in internal temperature.

Furthermore, in the embodiment described above, as shown in FIG. 7, the cold air blown from the blower 47 to the upper right-hand freezer compartment 171 or the upper left-hand freezer compartment 174, which are small storage rooms, is appropriately shielded by the shielding device 70. The cold air blown into each storage room can also be appropriately shielded by the shielding device 70. That is, the configuration and control method of the shielding device 70 described above can be applied when blowing cold air to the refrigerator compartment 15, the freezer compartment 17, and the vegetable compartment 20. Specifically, referring to FIG. 1, temperature sensors are placed in each of the refrigerator compartment 15, the freezer compartment 17, and the vegetable compartment 20. Then, if the internal temperature of each storage compartment measured by the temperature sensor is higher than the first ON set temperature, which is set higher than the ON set temperature, the control device 50 opens the shielding wall connected to each storage compartment. The compressor 44 and blower 47 are operated as follows. For example, if the internal temperature of the refrigerator compartment 15 measured by the temperature sensor is higher than the first ON set temperature that is set higher than the ON set temperature of the refrigerator compartment 15, the control device 50 A shielding wall connected to, for example, the upper left shielding wall 714 shown in FIG. 7 is opened. In this state, the blower 47 blows air into the refrigerator compartment 15, so that the refrigerator compartment 15 can be selectively and intensively cooled.

10 Refrigerator 11 Insulation box body 12 Outer box 13 Inner box 14 Insulation material 15 Refrigerator compartment 17 Freezer compartment 171 Upper right freezer compartment 172 Lower right freezer compartment 173 Lower left freezer compartment 174 Upper left freezer compartment 18 Internal compartment wall 20 Vegetable compartment 21 Insulation door 23 Insulation door 25 Insulation door 26 Cooling room 27 Air outlet 28 Return port 29 Refrigerator room supply air path 31 Freezer room supply air path 311 Upper right air path 312 Lower right air path 313 Lower left air path 314 Upper left air path 33 Air outlet 34, 341, 342, 343, 344 Air outlet 37 Vegetable compartment return air path 38 Return port 39 Return port 42 Heat insulating partition wall 43 Heat insulating partition wall 44 Compressor 45 Cooler 46 Defrosting heater 47 Blower 48 Rotating connection part 49 Air duct partition wall 50 Control device 501 Upper right temperature sensor 502 Lower right temperature sensor 503 Lower left temperature sensor 504 Upper left temperature sensor 51 Motor 60 Shielding wall drive mechanism 61 Cam 62 Cam storage section 63 Support base 64 Rotation connection section 65 Partition body 66 Partition body 67 Front cover 68 Rotating connection part 69 Pin 70 Shielding device 71 Shielding wall 711 Upper right shielding wall 712 Lower right shielding wall 713 Lower left shielding wall 714 Upper left shielding wall 73 Rotating plate 76 Moving shaft 80 Slide groove 83 Frame-shaped part 85 Concave-shaped part 86 Through hole 92 Timer

Claims (5)

A plurality of small freezer compartments are separated by plate-shaped internal compartment walls to constitute a freezer compartment, a refrigeration cycle cooler that cools air blown into the small freezer compartment, and a refrigerator that cools the air blown into the freezer compartment. an air blower that blows air toward the air blower, an air path through which the air blown from the air blower passes, a movable shielding wall that shields the air path, and a temperature sensor that detects the internal temperature of the small freezer compartment. , a control device that controls the refrigeration cycle, the blower, and the shielding wall based on the output of the temperature sensor,
The control device includes:
If the average temperature of the small freezer compartment detected by the temperature sensor is lower than the off set temperature, the compressor and the blower of the refrigeration cycle are stopped, and if the average temperature is higher than the on set temperature, the compressor is stopped. operating the machine and the blower;
If the internal temperature of any of the small freezer compartments detected by the temperature sensor is higher than the first on-set temperature, which is set higher than the on-set temperature, the operating the compressor and the blower with the shielding wall interposed in the air passage in an open state, lowering the internal temperature of the small freezer compartment;
If the internal temperature of any of the small freezer compartments detected by the temperature sensor is higher than a second set temperature that is set higher than the first on set temperature, the off set temperature is set to a lower temperature side. and blowing the air into any of the small freezer compartments until the internal temperature of any of the small freezer compartments becomes lower than the off set temperature set on the low temperature side. Refrigerator. The control device includes:
Even if the average temperature is lower than the ON set temperature, if the internal temperature of any of the small freezer compartments detected by the temperature sensor is higher than the first ON set temperature, any of the small freezers The refrigerator according to claim 1, wherein the compressor and the blower are operated with the shielding wall connected to the freezer compartment open. further comprising a shielding device that drives the shielding wall,
The shielding device includes a rotating plate having a sliding groove formed along a circumferential direction, a cam having a moving shaft that engages with the sliding groove and rotatably connected to the shielding wall, and the rotating plate. 3. The refrigerator according to claim 1, further comprising a motor that rotates the refrigerator. The control device includes:
The refrigerator according to any one of claims 1 to 3, wherein when the shielding wall connected to any of the small freezer compartments is opened, the other shielding walls are closed. . The refrigerator according to claim 1, wherein the shielding wall is disposed between each of the small freezer compartments and the blower.

Images