JPH11148760A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator which achieves improvements in the temperature controlling performance when controlling the supply of cooled air to two storage chambers with two baffles. SOLUTION: A baffle for an ice temperature chamber is provided to control the supply of cooled air to an ice temperature chamber 10, a baffle for a cold storage compartment to control the supply of cooled air to a cold storage compartment 11 and a damper device 46 comprising a damper motor is provided to drive the baffles. The damper motor is controlled based on temperatures of the ice temperature chamber 10 and the cold storage compartment 11. The damper device 46 is so arranged to allow the opening or closing of the baffle for the ice temperature chamber alone with the baffle for the cold storage compartment closed while the baffle for the ice temperature chamber is opened or closed to open the baffle for the cold storage compartment alone.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a first storage room partitioned in an insulated box and a second storage room having a higher temperature than the first storage room, which is cooled by a cooler. The present invention relates to a refrigerator which supplies cold air into each storage room by a blower and controls the supply of cold air to each room by a damper device.

[0002]

2. Description of the Related Art Conventionally, a refrigerator of this type is divided into a plurality of insulated boxes, for example, as shown in Japanese Utility Model Publication No. 6-12301 (F25D23 / 00).
A refrigerator (about + 3 ° C. to about + 5 ° C.) is formed, and each room is cooled by distributing and supplying cool air from a cooler to a blower. In addition, there has been developed one in which an ice temperature room (about 0 ° C. to −3 ° C.) whose temperature is lower than that of the refrigerator is further formed in the refrigerator room or at a position partitioned therefrom.

[0003] In this case, the control of the compressor and the blower is usually performed based on the temperature of the freezing room, whereby the freezing room is kept at a predetermined freezing temperature. This is performed by baffles of a damper device that opens and closes ducts for supplying cool air to the chamber.

Conventionally, a so-called gas-filled damper that opens and closes a baffle with a bellows filled with gas has been used as this damper device. However, in recent years, in order to improve the temperature control performance of a refrigerator room or an ice green room, A baffle that opens and closes each baffle by a drive device such as a motor based on the output of a temperature sensor that detects the temperature in each of them has been developed.

Further, as this damper device, a device that drives two baffles for controlling the supply of cold air to a refrigerator compartment and an ice compartment by a single motor is mainly used. In this case, the output of the motor is transmitted to each baffle by gears and cams, and both baffles are closed (closed / closed), only one is opened (opened / closed), and both are opened (opened / closed).
Open), and open only the other (closed / open).

According to this configuration, there is an advantage that it is not necessary to provide a motor for driving each baffle.

[0007]

However, in such a damper device, the above four states are cyclically created by rotating the motor in one direction or rotating forward or backward.
In some cases, one baffle can be opened and closed independently, but one baffle must be opened and closed to open the other baffle. In such a case, if the temperature control of the refrigerator compartment is performed by one of the baffles, the baffle of the refrigerator compartment opens and closes unnecessarily every time the baffle of the ice temperature compartment is operated. Occurs.

The present invention has been made to solve the above-mentioned conventional technical problem, and has a refrigerator in which the temperature control performance when controlling the supply of cold air to two storage rooms with two baffles is improved. The purpose is to provide.

[0009]

SUMMARY OF THE INVENTION A refrigerator according to the present invention includes a first storage compartment defined in a heat insulating box and a second storage compartment having a higher temperature than the first storage compartment. A damper device comprising first and second baffles and driving means for driving both baffles, and a temperature of each storage room. Control means for controlling the driving means based on the, the damper device can open and close only the first baffle in a state where the second baffle is closed, and,
Opening and closing the first baffle to open only the second baffle, controlling the supply of cool air to the first storage chamber by the first baffle, and providing the second baffle to the second storage chamber. It controls the supply of cool air.

[0010]

Next, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a front view of the refrigerator 1 of the present invention, FIG. 2 is a front view of the refrigerator 1 without the heat-insulating door, FIG.
FIG. 5 is a longitudinal sectional side view of the refrigerator 1 of the present invention, FIG. 5 is another longitudinal sectional side view of the refrigerator 1, and FIG.

The refrigerator 1 has a front-opening heat-insulating box 6 formed by filling a heat-insulating material 4 such as foamed polyurethane between an outer box 2 made of a steel plate and an inner box 3 made of a hard resin such as ABS by an in-situ foaming method. It is composed of The interior of the heat insulating box 6 is divided into upper and lower four chambers by an upper partition wall 8, a middle partition wall 7, and a lower partition wall 9 attached to the inner box 3, respectively, and the upper part of the upper partition wall 8 is refrigerated. A room 11 (second storage room), a vegetable room 12 below the lower partition 9, an ice temperature room 10 (first storage room) between the upper partition 8 and the middle partition 7, and a lower portion between the lower partition 9 and the middle partition 7. Partition wall 9
The space between is defined as a freezing room 13. A pre-partitioning member 15 is attached to an opening edge in the middle between the middle partition wall 7 and the lower partition wall 9.

The front opening of the refrigerator compartment 11 is openably and closably closed by a double door type heat-insulating door 14, and the freezer compartment 13 and the vegetable compartment 12 are connected to the container 1 having the top opening.
Insulated drawer door 1 with 6A, 17A, 18A
6, 17 (the upper and lower freezer compartments 13) and 18 are openably and closably closed. Ice greenhouse 10
Is also openably and closably closed by a drawer-type heat-insulating door 19 provided with a container 19A having an upper surface opening.

In the upper left corner of the freezer compartment 13, an automatic ice maker 21 is installed. The automatic ice maker 21 includes an ice tray (not shown) and an ice maker motor for rotating and twisting the ice tray. Further, the interior of the freezer compartment 13 is partitioned forward and rearward by a partition plate 22 and a cooler front plate 23, and a cooling chamber 24 is defined behind the cooler front plate 23. A cooler 26 is provided vertically. A blower 29 is provided above the center of the cooler 26,
A defrost heater 31 is provided below the cooler 26.

A plurality of freezing chamber discharge ports 13A are formed in the upper part and the central part of the partition plate 22.
The freezer compartment inlets 13B, 13B are provided on the lower left and right sides of the partition plate 22.
However, the freezer compartment suction port 1
3C and 13C are formed adjacent to each other.

On the other hand, the cooler front plate 23 is provided behind the partition plate 22 at a small interval, and a grill 23A on which the fan 32 of the blower 29 faces is formed above the cooler front plate 23. The space between the partition plate 22 on the front side of the fan 32 and the cooler front plate 23 communicates with the freezing chamber discharge ports 13A. An opening 23B is provided at the lower central portion of the cooler front plate 23.
Is formed and communicates with the freezing chamber suction ports 13C, 13C and the cooling chamber 24. In addition, the freezer compartment inlet 13B, 1
3B communicates with the lowermost part of the cooling chamber 24 via the lower end of the cooler front plate 23.

Here, the cooler 26 is provided as shown in FIGS.
As shown in FIG. 3, a plurality of aluminum fins 27 are provided at predetermined intervals and extend vertically.
Is a so-called plate fin type heat exchanger comprising a refrigerant pipe 28 penetrating these fins 27... The fin density (pitch) at the lower end of the cooler 26 is reduced, and further, except for the central portion. The fin density at the left, right, front and rear is also sparse.

That is, the vertical dimension of each fin 27.
The two or three fins 27 are continuously short, the left and right fins 27 sandwiching them are long, and the vertical dimension of the short fins 27 in the center is further reduced every other fin. Each fin 27 located on the left and right
The front and rear width is also narrowed every other sheet.

As a result, a region 26A having a low fin density is provided at the lower edge of the cooler 26, and the region 26A is provided at the center thereof.
A fin-density region 26B that rises continuously from A and extends slightly below the center in the upper and lower directions, and the left and right front and rear edges (cooling in which the edge of the fin 27 extending in the vertical direction through which cool air flows) are located. .. Are also formed in the outer part of the vessel 26). The area 26B corresponds to a position below the blower 29, and the opening 23B corresponds to a front side of the area 26B (FIG. 8).

A guide duct 39 is formed above the blower 29 so as to vertically pass through a rear portion of a molded heat insulating material 38 made of styrene, which will be described later, inserted into the partition wall 7. The lower part communicates with the space in front of the fan 32, and the upper part is connected to a branch duct 42 formed in the molded heat insulating material 41. The branch duct 42 includes an ice greenhouse baffle 44 as a first baffle and a refrigerator compartment baffle 4 as a second baffle.
One is connected to the refrigerator compartment rear duct 47 and the other is connected to the ice hot room duct 48 via the damper device 46 provided with the third and third components. The refrigerator compartment baffle 43 is a refrigerator compartment rear duct 4.
7, an ice greenhouse baffle 44 is located at an inlet of an ice greenhouse duct 48 to be described later.

The baffle 44 for the ice greenhouse and the baffle 43 for the cold room are always provided with a rear duct 47 for the cold room and a duct 48 for the ice green room by springs 44A, 43A such as coil springs.
Is biased to close. A gear box 45 is provided between the baffle 44 for the ice greenhouse and the baffle 43 for the refrigerator compartment.
The gear box 45 has a CW (clockwise) rotation (shown by an arrow in FIG. 26) and a CC
A damper motor 46M capable of W (counterclockwise) rotation (indicated by an arrow in FIG. 26) is provided. The output of the damper motor 46M is transmitted to each ice greenhouse baffle 44 and the refrigerator compartment baffle 43 via a gear (not shown), and the rotation of the single damper motor 46M causes the ice greenhouse baffle 44 and the refrigerator compartment baffle 43 to rotate. Are driven to open and close.

A rear duct plate 49 is attached to the back of the refrigerator compartment 11 at a distance from the back of the inner box 3.
The refrigerator compartment rear duct 47 extending vertically is formed between the rear duct plate 49 and the inner box 3. On the front surface of the rear duct plate 49, a refrigerator outlet 11A is formed.
In the refrigerating room 11, a plurality of shelves 51 are provided. Further, at the lower right corner of the rear duct plate 49 on the rear side of the refrigerator compartment 11, a rear refrigerator compartment suction port 61 is formed, and this rear refrigerator compartment suction port 61 is formed and heat-insulated on the rear side of the rear plate 62 of the ice warm room 10. The members 38 and 41 communicate with the upper part of the return duct 63 formed on the side.

Further, a water supply tank 52 for supplying water to the automatic ice making machine 21 is accommodated in a lower left corner of the refrigerator compartment 11. As shown in FIGS. 17 to 19, the water supply tank 52 has a tank body 53 that is long and narrow and opens on the upper surface, a cover 54 that closes the upper surface opening of the tank body 53,
The cover 54 includes a cover member 56 attached to the cover 54 and the like.

In this case, a rectangular recess 54A is formed at the front of the cover 54, and a rectangular injection port 57 is also formed at the bottom of the recess 54A. The lid member 56 includes hinge portions 56A, 5A on both sides of the trailing edge.
6A is rotatably supported by the cover 54 behind the inlet 57 so as to openably close the inlet 57.

The lid member 56 has a concave shape along the inner surface of the concave portion 54A, so that the lid member 56 can be sufficiently fingered. At the rear of the cover 54, a water-absorbing cylinder 54B descends into the tank body 53, and the water-absorbing cylinder 54B communicates with a connecting portion 54C that opens rearward at the rear end of the cover 54.

When installing the water supply tank 52, the water supply tank 52 is inserted into the refrigerator compartment 11 from the front, and the connecting portion 54C is detachably connected to a water supply pipe 59 provided at the back thereof. The water supply pipe 59 communicates with the automatic ice making machine 21, and the water in the tank main body 53 is sucked up from the water absorbing cylinder 54 B and supplied to the ice making tray of the automatic ice making machine 21 via the connecting part 54 C and the water supply pipe 59. The ice making operation is performed there. The generated ice will be stored in the freezing room 13.

When the water in the tank main body 53 is exhausted by the ice making operation, the water supply tank 52 is moved to the refrigerator compartment 11.
In this case, the water supply tank 52 can be easily pulled out by inserting a finger into the recessed lid member 56, hooking the finger, and pulling the finger forward.

Then, the lid member 56 is pivoted upward from the near side to open the injection port 57 and replenish water into the tank body 53. In this case, the lid member 56 can be easily opened and closed. Therefore, the injection work is also facilitated. After replenishment, the lid member 56 is closed and carried. In this case,
Since the lid member 56 is located along the inner surface of the concave portion 54A of the cover 54 and closes the injection port 57 (FIG.
9) It is possible to prevent water from leaking from the injection port 57 due to shaking at the time of transportation.

On the other hand, the upper partition wall 8 is composed of an upper plate 66 and a lower plate 67 made of a hard resin and a molded heat insulating material 68 provided along the lower surface of the upper plate 66 as shown in FIGS. The ice greenhouse duct 48 is formed between the formed heat insulating material 68 and the lower plate 67. Ice greenhouse duct 4
Numeral 8 is configured to expand forward from a rear entrance 48A by a blind alley-shaped partition wall 69 provided on the upper surface of the lower plate 67, and the lower plate 67 located in the middle and front thereof has an ice greenhouse. A plurality of discharge ports 71 are formed.

The lower plate 67 on the front and right side of the partition wall 69 is also provided.
Are provided, and two refrigerating chamber suction ducts 77 and 78 are arranged side by side in the upper partition wall 8 outside the ice greenhouse duct 48. The front of the upper plate 66 has left and right refrigerator compartment suction ports 79 and 81 formed on the left and right, and the left refrigerator compartment front suction port 7.
Numeral 9 communicates with the suction portion 77A of the left refrigerator compartment suction duct 77, and the right refrigerator compartment front suction port 81 communicates with the suction portion 78A of the right refrigerator compartment suction duct 78. Also,
The rear end of each refrigerator compartment suction duct 77, 78 communicates with the return duct 63.

In this case, the passage cross-sectional area of the left refrigerator compartment suction duct 77 is formed larger than the passage cross-sectional area of the right refrigerator compartment suction duct 78, and the suction portion 77 A is also connected to the suction portion 7.
8A (FIG. 15). Here, since the refrigerator compartment suction ducts 77 and 78 are formed so as to detour from the front side of the ice greenhouse duct 48 to the right side, the passage length of the refrigerator compartment suction duct 77 on the left side is equal to the passage length of the refrigerator compartment suction duct 78 on the right side. It is longer than long.

A narrow communication passage 83 is formed between the partition wall 72 and the partition wall 69. The communication passage 83 connects the front end of the ice greenhouse duct 48 and the suction portion 77A of the refrigerator compartment suction duct 77. ing. An ice greenhouse suction port 84 is formed on the right side of the back plate 62 of the ice greenhouse 10 and communicates with the return duct 63.

On the other hand, the upper end of the vegetable compartment duct member 86 is connected to the right part of the molded heat insulating material 38, and the right side of the cooling room 24 is lowered downward to form a vegetable compartment duct 87 inside. . The upper end of the vegetable compartment duct 87 communicates with the return duct 63, and the lower end is opened at a vegetable compartment discharge port 88 at the upper right rear of the vegetable compartment 12.

A vegetable compartment suction duct 91 is formed in the lower partition wall 9. The vegetable compartment suction duct 91 is connected to the vegetable compartment 1.
2, opened at the vegetable compartment suction port 92 opened at the top of the back,
In addition, it communicates with the lower end of the cooling chamber 24.

Next, the partition wall 7 is shown in FIGS.
As shown in FIG.
And the formed heat insulating material 38 inserted between the upper and lower plates 131 and 132. In this case, the formed heat insulating material 38 is formed in a shape sandwiched by the upper and lower plates 131 and 132, and the left and right side surfaces of the partition wall 7 are provided with the upper and lower plates 1.
The front and rear inflow holes 13 are cut out by cutting
3, 134 are formed.

The lower plate 132 located at the rear edge of the rear inflow hole 134 is integrally formed with claws 136 that protrude outward (left and right directions) and then extend rearward. A central raised portion 38A and left and right concave portions 38B, 38B are formed on the upper and lower surfaces of the molded heat insulating material 38, and the raised portion 38A comes into contact with the inner surfaces of the upper and lower plates 131, 132 to maintain the interval. Play a role. Thus, spaces G are formed on the left and right sides of the protruding portion 38A on the left and right sides of the upper and lower plates 131 and 132, respectively, and these spaces G communicate with the front and rear inflow holes 133 and 134.

Further, an electric heater 119 for preventing frost is attached to the inner surface of the upper plate 131. in this case,
The electric heater 119 is disposed such that a portion corresponding to the raised portion 38A of the molded heat insulating material 38 is particularly dense (indicated by 119A in the figure).

On the other hand, on the left and right wall surfaces of the inner box 3, rail sections 141 extending in the front-rear direction are formed so as to project toward the outer box 2.
A rear outflow hole 144 is formed at the rear of the rail portion 141. Further, a protruding portion 143 further protruding toward the outer box 2 is formed integrally with a front portion of the rail portion 141.
A front outflow hole 142 is formed in the outer end wall of the overhang portion 143.

With the above configuration, when attaching the partition wall 7 to the inner box 3, the partition wall 7 is inserted from the front of the inner box 3 so as to correspond to the rail portion 141 of the inner box 3. that time,
The claw 136 must pass through the front outflow hole 142, but since the front outflow hole 142 is formed on the wall surface of the overhang portion 143, the front outflow hole 142 is located outside the claw 136 as is clear from FIG. Accordingly, the claw 136 does not engage with the front outflow hole 142 when the intermediate partition wall 7 is inserted, and the insertion workability is improved.

When the partition 7 is further inserted, the claws 136
Eventually, it reaches the rear outflow hole 144, passes through it, and
Project to the side. When the partition wall 7 is inserted to a predetermined position, the claw 136 finally engages with the rear edge of the rear outflow hole 144. In the figure, reference numeral 146 denotes each of the holes 133, 134, and 14.
The sealing material is located above and below 2, 144 between the partition wall 7 and the inner box 3.

In this state, the partition wall 7 is fixed to the inner box 3, the front inflow hole 133 corresponds to the front outflow hole 142, and the rear inflow hole 134 corresponds to the rear outflow hole 144. , The space G and the space between the inner and outer boxes 3, 2 are communicated. Then, the foam insulation 4 between the outer box 2 and the inner box 3
Is filled, the foamed heat insulating material 4 has front and rear outflow holes 142, 1
After exiting from 44, the space G from the front and rear inflow holes 133, 134
・ Enter inside. Thereafter, the foamed heat insulating material 4 is solidified between the upper plate 131 and the formed heat insulating material 38 and between the lower plate 132 and the formed heat insulating material 38 and adheres to them, so that the three members are firmly fixed. .

In the above configuration, the lower partition wall 9 is assumed to have the same structure, although the shape is different.

Next, as shown in FIG. 16, the pre-partitioning member 15 has a main body 93 made of hard resin, a molded heat insulating material 94 provided in the main body 93, a front plate 96 made of steel plate, and a back surface. It is composed of an attached high-temperature refrigerant pipe 97 for preventing dew condensation, and the lower wall of the main body 93 has a shape in which the front part 93A is low and the rear part 93B is stepped high.

At the rear end of the front portion 93A, an engagement portion 93C is formed integrally at a position slightly above the lower surface of the front portion 93A and protrudes rearward with a space below the rear portion 93B. . The base portion 98A of the seal member 98 is attached to the engaging portion 93C by engaging from behind, and the soft fin piece 98B projects forward and downward.

The soft fin piece 98B of the seal member 98 is to be tightly sealed to the rear surface of the front edge of the container 17A with the heat insulating door 17 closed, and in this case, the base 98A of the seal member 98 is closed. The lower surface is substantially flush with the lower surface of the front portion 93A of the main body 93. That is, the base portion 98A of the sealing member 98 or the mounting portion thereof (the member 15 before the partitioning).
Is not projected downward, so that the container 17
A does not get caught, and the vertical dimension of the container 17A can be enlarged by that amount to expand the effective volume.

This structure is similarly formed on the other partition walls 7, 8, and 9. Also, 104
Is a refrigerator compartment temperature sensor for detecting the temperature in the refrigerator compartment 11, attached to the rear duct plate 49, and 106 is an ice temperature compartment temperature sensor for detecting the temperature in the ice compartment 10;
It is attached to the lower plate 67.

Further, a machine room 99 is formed at a lower portion of the heat insulating box 6, and a compressor 101 and a condenser (not shown) constituting a well-known refrigerating cycle are provided at a rear portion inside the machine room 99. , A machine room blower and the like are installed.
A kick plate 102 is attached to the lower side of the heat insulating door 18 at the front end of the machine room 99. The kick plate 102 has an air inlet 103 for ventilating the inside of the machine room 99. ing.

Next, FIG. 20 shows the control device 10 of the refrigerator 1.
8 shows a block diagram of an electric circuit of FIG. Control device 10
8 is constituted by a general-purpose microcomputer 110, and the microcomputer 110 includes a freezing room 13
Freezer compartment temperature sensor 109 for detecting the temperature inside the refrigerator, the refrigerator compartment temperature sensor 104, and the ice compartment temperature sensor 10
6. An outside air temperature sensor 111 for detecting the outside air temperature around the refrigerator 1 installed, an ICE sensor 112 for detecting the temperature of the ice tray of the automatic ice maker 21, a setting circuit 113 including a volume for temperature setting, etc. Current detection circuit 114 for detecting the current supplied to each motor to be activated, and a door switch circuit 116 comprising a plurality of switches for detecting the opening and closing of each of the heat insulating doors 14, 14, 16, 17, 18, 19
Output is input.

A compressor motor 101M composed of a DC motor for driving the compressor 101 is connected to the output of the microcomputer 110 via a driver 122.
A blower motor 29M composed of a DC motor for driving the blower 29 is connected via a driver 123, and a machine room blower motor 117 composed of a DC motor for driving the machine room blower is connected via a driver 124. An ice maker motor 21M comprising a DC motor for rotating the ice tray 21 is connected via a driver 126,
A pump motor 118 comprising a DC motor for driving a pump for supplying water from the water supply tank 52 to the ice tray of the automatic ice making machine 21 is connected via a driver 127, and a reversible damper motor comprising a DC motor of the damper device 46. 46M are connected via the driver 128, respectively.

A relay circuit 129 driven by a DC power supply is connected to the output of the microcomputer 110. The relay circuit 129 is connected to the defrost heater 31, the electric heater 119 of the partition wall 7, and the lower heater. Electric heaters 121 similarly provided in the partition wall 9 for preventing frost are connected.

The operation of the above configuration will be described. The microcomputer 110 drives the compressor motor 101M, the machine room blower motor 117, and the blower motor 29M based on the output of the freezing room temperature sensor 109 when the temperature in the freezing room 13 has reached a predetermined upper limit temperature. I do. Thus, when the compressor 101 and the blower 29 are operated, the cool air in the cooling chamber 24 cooled by the cooler 26 is sucked upward by the fan 32 of the blower 29, and the front freezing chamber discharge ports 13A,. It is blown out into the freezer compartment 13.

Then, the containers 16A, 17 in the freezer compartment 13
After circulating and cooling the inside of A, the cool air returns to the cooling chamber 24 from the lower freezing chamber suction ports 13B, 13B, 13C, 13C. When the temperature in the freezer compartment 13 drops to a predetermined lower limit temperature, the microcomputer 110
M, the machine room blower motor 117 and the blower motor 29M are stopped. Thereby, the freezing compartment 13 is set at the set temperature (−2
(About 0 ° C.).

Here, the cool air flowing from the freezer compartment suction ports 13B, 13B flows into the cooler 26 from a region 26A at the lower end of the cooler 26 and rises between the fins 27. The cool air flowing in from the ports 13C, 13C is in a region 26 slightly lower than the central portion above and below the cooler 26.
B flows into the cooler 26.

As will be described later, since the humid cold air circulating in the refrigerator compartment 11, the ice warming compartment 10, and the vegetable compartment 12 flows from the vegetable compartment suction duct 91 from the region 26A at the lower end of the cooler 26, cooling is performed. A large amount of frost adheres and grows in the region 26A of the cooler 26, but the cool air flowing from the freezing chamber suction ports 13C, 13C flows from above (downstream side) into the region 26B having a low fin density of the cooler 26, and thereafter Since the fin density is introduced into the region below the dense blower 29, the flow of the cool air flowing from the region 26B is not hindered by the frost that has grown in the region 26A.

The left and right front and rear edges of the cooler 26 (the outer portion of the cooler 26 where the edges of the fins 27 extending in the vertical direction through which the cool air flows) are also located in the low-fin density regions 26
.. Are configured, even if the area 26A is blocked by the growth of frost, the area 26C
Frost blockage is delayed by the presence of

Therefore, even in such a case, the cool air can be introduced from the region 26C into the cooler 26 and heat exchange can be performed, so that the heat exchange between the fins 27 and the flowing cool air is generally maintained, and the cooler 26 is cooled. Can significantly improve the cooling capacity.

Further, since the left and right regions 26C other than the central portion of the cooler 26 corresponding to the blower 29 constitute the region 26C, the fin density of the portion of the cooler 26 where the cool air flows most becomes dense as described above. Therefore, when the frost grows while maintaining the heat exchange efficiency in a state where there is no or little frost, the flow of the cool air is maintained from the regions 26B and 26C as described above, and the heat exchange is secured. Will be able to do it.

A part of the cool air blown out from the blower 29 flows into the guide duct 39 and is divided in two directions by the branch duct 42, and one of the cool air is refrigerated through the refrigerator compartment baffle 43 provided in the damper device 46. It flows into the room rear duct 47. The cold air flowing into the refrigerator compartment rear duct 47 is blown into the refrigerator compartment 11 from the refrigerator compartment discharge port 11A, and circulates through the inside of the refrigerator compartment for cooling. Then, the refrigerator compartment suction port 61 and the refrigerator compartment front suction port 79, It flows into 81.

The other part of the flow branched by the branch duct 42 flows into the ice greenhouse duct 48 via the ice greenhouse baffle 44 provided in the damper device 46. Then, the cold air flowing into the ice greenhouse duct 48 is blown out from the ice greenhouse discharge ports 71 into the ice greenhouse 10, circulates through the inside and cools, and then flows into the ice greenhouse suction port 84.

The microcomputer 110 controls the driving of the damper motor 46M, and the refrigerator compartment 1 to which the refrigerator compartment temperature sensor 104 and the ice compartment temperature sensor 106 output respectively.
By driving the baffles 44 and 43 based on the temperature in the ice bath 1 and the temperature in the ice chamber 10, the closing and closing (steps S150 and S151) → opening and closing (steps S152 and S152)
153) → open / open (step S154) → close / open (step S155).

Here, the opening and closing operation of the baffles 44 and 43 will be described with reference to FIG. Step S150 in which both the ice greenhouse baffle 44 and the refrigerator compartment baffle 43 are closed (closed
In the closed state, the damper motor 46M is in the locked state, and only the CW rotation is possible from this state. When the damper motor 46M rotates CW, the ice greenhouse baffle 44 and the refrigerator compartment baffle 43 are closed (Step S).
After step 151 (close / close), only the ice greenhouse baffle 44 is opened (step S152 (open / close)). The damper motor 46M is capable of both CCW rotation and CW rotation between step S150 and step S151 and between step S151 and step S152.
Between C. 52 and step S153, only CW rotation is permitted.

Step S153 (opening / opening) in which both the ice greenhouse baffle 44 and the refrigerator compartment baffle 43 are open.
In CCW rotation of damper motor 46M is locked,
Only CW rotation is allowed. And the damper motor 46
When M rotates CW, the ice greenhouse baffle 44 and the refrigerating room baffle 43 are opened, and after step S154 (open / open), only the ice greenhouse baffle 44 is closed, step S155.
(Closed / open). In this state, the damper motor 46M can perform CCW rotation and CW rotation, but only CCW rotation is allowed between step S155 and step S150.

As described above, when both the ice greenhouse baffle 44 and the refrigerator compartment baffle 43 are closed and locked in step S150 (closed / closed), the damper motor 46M proceeds to step S151 (closed / closed). S152 (open
CW rotation and CCW rotation are possible during the period of (closed).
Only 4 can be opened and closed. Also, both the ice greenhouse baffle 44 and the refrigeration room baffle 43 are opened and step S153 is performed.
When (open / open) is locked, step S154 (open / open)
Open) and step S155 (close / open) for CW rotation and CC
Since it is configured to be able to rotate W, the baffle 4 for the refrigerator compartment
3 is configured such that only the ice greenhouse baffle 44 can be opened and closed with the 3 opened.

However, step S150 (closed
When only the refrigerator compartment baffle 43 is opened from the state where both baffles 43 and 44 are closed in (closed), step S151,
Step S152, step S153, step S15
4. Step S155 must be sequentially performed.
In the process, the ice greenhouse baffle 44 is opened and closed.

Based on the above operation, the microcomputer 110 drives the damper motor 46M based on the output of the refrigerator compartment temperature sensor 104, and
Is opened and closed, and the inside of the refrigerator compartment 11 is set at + 3 ° C. which is the set temperature of the refrigerator compartment 11 set by the R volume of the setting circuit 113.
Maintain a refrigeration temperature of about + 5 ° C. Also, based on the output of the ice greenhouse temperature sensor 106, the damper motor 46
M, and opens and closes the ice greenhouse baffle 44, and
For example, 0 ° C., which is the set temperature of the ice greenhouse 10 set in the container 19A in 0 by the H volume of the setting circuit 113,
Maintain an ice temperature range of about -3 ° C.

In this case, when opening the baffle 43 as described above, the baffle 44 is always opened and closed. Therefore, when the baffle 44 controls the supply of cold air to the refrigerator compartment 11 and the baffle 43 controls the supply of cool air to the ice temperature chamber 10, the cooling of the refrigerator compartment 11 is not required. In other words, the baffle opens and closes when cooling of the ice greenhouse 10 is requested, and cool air flows into the refrigerator compartment 11.

In this state, the refrigerating room 11 is supercooled. However, in the present invention, the baffle 43 is used for the refrigerating room, the baffle 44 is used for the ice room, and the ice room 10 is used for the refrigerating room 11.
Since the temperature is lower than this, there is no fear of such supercooling.

On the other hand, the cool air flowing into the post-refrigeration room suction port 61 and the ice temperature chamber suction port 84 flows into the return duct 63 as it is, but the cool air flowing from the cooling chamber front suction ports 79 and 81 is cooled by the cold room. The air flows into the return duct 63 through the suction ducts 77 and 78, respectively. Also, ice greenhouse duct 48
A part (a small amount) of the cool air flowing into the inside flows into the refrigerator compartment suction duct 77 directly through the communication passage 83 without passing through the ice temperature chamber 10, joins with the cool air from the suction port 79, and returns. It will flow into the duct 63.

Here, as described above, the passage length of the left refrigerator compartment suction duct 77 is longer than the passage length of the right refrigerator compartment suction duct 78. Therefore, at the same passage cross-sectional area and suction area, the flow path resistance of the refrigerator compartment suction duct 77 becomes larger than the flow path resistance of the refrigerator compartment suction duct 78, so that the amount of cold air sucked from the refrigerator compartment front suction port 79 is refrigerated. This is smaller than the amount of cold air sucked from the front suction port 81.

If the amount of the intake cold air differs between the left and right sides of the refrigerator compartment 11, the cooling effect of the front part of the refrigerator compartment 11 is deviated left and right, and in the embodiment, the left side is less cooled than the right side. However, as described above, the passage cross-sectional area of the left refrigerator compartment suction duct 77 is formed larger than the passage cross-sectional area of the right refrigerator compartment suction duct 78, and the suction portion 77A is formed to be larger than the suction portion 78A. The flow path resistance of the two ducts 77 and 78 is made substantially uniform. Therefore, the amount of cool air flowing into the inlets 79 and 81 in front of the refrigerating compartment is substantially uniform, and the refrigerating compartment 11
The inside can be cooled uniformly.

Next, the cool air flowing into the return duct 63 flows into the vegetable compartment duct 87, descends there, and is discharged into the vegetable compartment 12 through the vegetable compartment discharge port 88. Then, after circulating in the vegetable compartment 12 and indirectly cooling the inside of the container 18A, it is sucked in from the vegetable compartment suction port 92, passes through the vegetable compartment suction duct 91 formed in the lower partition wall 9, and enters the cooling chamber 24. Return to the bottom of. Then, it flows again into the region 26A of the cooler 26 as described above.

As a result, the vegetables in the container 18A are kept cool at a temperature of about + 3 ° C. to + 5 ° C. in a state in which drying is prevented.
3, that is, low-temperature cold air (as it is cooled by the cooler 26) that has not passed through the ice green room 10 or the cold room 11. Even when the load in the inside increases and the cold air temperature rises, the cooling capacity in the vegetable compartment 12 is ensured.

In the embodiment, the front outflow hole 142 is formed in the overhang portion 1.
43, but is not limited thereto, and may be formed on the front wall surface of the overhang portion 143 or the upper and lower wall surfaces. Further, in the embodiment, the temperature control of the refrigerator compartment 11 and the ice compartment 10 is performed by the damper device 46, but the present invention is also effective when applied to two storage compartments in other temperature zones.

[0073]

As described above in detail, according to the present invention, there is provided a first storage compartment partitioned and formed in the heat insulating box, and a second storage compartment having a higher temperature than the first storage compartment. In a refrigerator configured to supply cool air cooled by a cooler into each storage room by a blower, a damper device including first and second baffles and driving means for driving both baffles; Control means for controlling the driving means based on this, this damper device can open and close only the first baffle in a state where the second baffle is closed,
And in the case of a structure that opens and closes the first baffle to open only the second baffle, the supply of cool air to the first storage chamber is controlled by the first baffle, and the second baffle controls the supply of cool air. Since the supply of the cool air to the second storage room is controlled, it is not necessary to open and close the second baffle for the second storage room when supplying the cool air to the first storage room.

As a result, it is possible to prevent the supercooling of the second storage room having a relatively high temperature from occurring, and to realize smooth temperature control of both storage rooms.

[Brief description of the drawings]

FIG. 1 is a front view of a refrigerator according to the present invention.

FIG. 2 is a front view of the refrigerator of the present invention excluding a heat insulating door.

FIG. 3 is a front view of the refrigerator excluding a heat insulating door from which a container and the like are removed.

FIG. 4 is a vertical sectional side view of the refrigerator of the present invention.

FIG. 5 is another longitudinal side view of the refrigerator of the present invention.

FIG. 6 is still another longitudinal side view of the refrigerator of the present invention.

FIG. 7 is a perspective view of a freezer compartment of the refrigerator according to the present invention.

FIG. 8 is a transparent front view of a partition plate at the back of the freezer compartment of the refrigerator of the present invention.

FIG. 9 is an enlarged vertical sectional side view of a lower part of a cooler of the refrigerator of the present invention.

FIG. 10 is another enlarged vertical sectional side view of the lower part of the cooler of the refrigerator of the present invention.

FIG. 11 is a front view of a refrigerator of the refrigerator of the present invention.

FIG. 12 is a plan view of a refrigerator of the refrigerator of the present invention.

FIG. 13 is a side view of a refrigerator of the refrigerator of the present invention.

FIG. 14 is an exploded perspective view of an upper partition wall of the refrigerator of the present invention.

FIG. 15 is a plan sectional view of an upper partition wall of the refrigerator of the present invention.

FIG. 16 is a longitudinal sectional side view of a pre-partitioning member of the refrigerator of the present invention.

FIG. 17 is an exploded perspective view of a water supply tank for an automatic ice maker of the refrigerator of the present invention.

FIG. 18 is a vertical sectional side view of a water supply tank for an automatic ice maker of the refrigerator of the present invention.

FIG. 19 is a vertical sectional front view of a water supply tank for an automatic ice maker of the refrigerator of the present invention.

FIG. 20 is a block diagram of an electric circuit of the control device of the refrigerator of the present invention.

FIG. 21 is a perspective view of a partition wall of the refrigerator of the present invention.

FIG. 22 is an exploded perspective view of a partition wall of the refrigerator of the present invention.

FIG. 23 is an enlarged vertical sectional front view of a side wall of a partition wall of the refrigerator according to the present invention.

FIG. 24 is a plan view showing a state where the refrigerator of the present invention is attached to the inner box of the partition wall.

FIG. 25 is a perspective view of a refrigerator damper device of the present invention.

FIG. 26 is a block diagram illustrating an operation of the refrigerator damper device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Refrigerator 6 Insulated box 7 Middle partition wall 8 Upper partition wall 9 Lower partition wall 10 Ice greenhouse 11 Refrigeration room 11A Refrigeration room discharge opening 12 Vegetable room 13 Freezing room 13A Freezing room discharge opening 13B, 13C Freezing room suction opening 24 Cooling room Reference Signs List 26 Cooler 38 Molded heat insulating material 43 Cold room baffle 43A, 44A Spring 44 Ice greenhouse baffle 45 Gear box 46 Damper device 46M Damper motor 48 Ice green room duct 63 Return duct 77, 78 Cold room suction duct 79, 81 In front of cold room Suction port 87 Vegetable room duct 104 Cold room temperature sensor 106 Ice greenhouse temperature sensor 108 Control device 110 Microcomputer 111 Outside air temperature sensor 113 Setting circuit

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Taira Muto 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Motoharu Kobayashi 2-chome, Keihanhondori, Moriguchi-shi, Osaka No. 5-5 Sanyo Electric Co., Ltd. (72) Inventor Hideki Oyu 2-5-5-Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd.

Claims (1)

[Claims] 1. A first storage compartment defined in a heat insulating box and a second storage compartment having a higher temperature than the first storage compartment, and cool air cooled by a cooler is blown by a blower. In a refrigerator supplied to a storage room, a damper device including first and second baffles and a drive unit for driving both baffles, and a control unit for controlling the drive unit based on a temperature of each of the storage rooms The damper device can open and close only the first baffle in a state where the second baffle is closed, and open and close the first baffle to open only the second baffle And a supply of cool air to the first storage room is controlled by the first baffle, and a supply of cool air to the second storage room is controlled by the second baffle.