JPH08189744A - Refrigerator - Google Patents

Abstract

PURPOSE: To increase the cooling capability of a freezer chamber and refrigerating chamber, and reduce the consumption power. CONSTITUTION: A refrigerator is equipped with a blower 12 for a freezer chamber, which circulates cold air to a freezer chamber cold air discharging passage 15 communicating with a condenser 8 and freezer chamber 4 and a freezer chamber cold air returning passage 16, and a blower 13 for refrigerating chamber, which circulates cold air to a refrigerating chamber cold air discharging passage 17 communicating with the condenser 8 and refrigerating chamber 5 and refrigerating chamber cold air returning passage 18. Then, in the freezer chamber 4 and refrigerating chamber 5, temperature detectors 10, 11 and a control device are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a forced ventilation type refrigerator having at least a freezer compartment and a refrigerator compartment.

[0002]

2. Description of the Related Art A conventional forced ventilation type refrigerator (see, for example, Japanese Patent Laid-Open No. 103984/1992) will be described with reference to FIGS.

In the figure, reference numeral 101 denotes a refrigerator main body, and partition walls 102 and 103 form a drawer type freezer compartment 104 in the center, a refrigerating compartment 105 in the upper part, and a drawer type vegetable compartment 106 in the lower part. 107 is a compressor that constitutes a refrigeration cycle, 108 is a cooler, 109 is a condenser,
Reference numeral 110 denotes a blower that ventilates the cool air cooled by the cooler 108 to the freezer compartment 104, the refrigerating compartment 105, and the vegetable compartment 106, and 111 denotes the cool air discharged from the blower 110, the freezer compartment 104 and the refrigerating compartment 105. With a partition plate that distributes an appropriate amount to the blower,
A pressure chamber is formed by colliding with the partition plate 111 on the front side of 0, and cold air is dispersed to the freezing room cold air discharge port 112 and the refrigeration room cold air intake port 113 by an appropriately provided wind direction plate. Reference numeral 114 denotes the cooler 1 from inside the freezer compartment 104.
Cooling room cold air return air passage for returning cold air to 08, 115 is formed in the inner surface of the refrigerating room 105 and sends cold air into the refrigerating room 105, 116 is the cold room cold air intake A refrigerating compartment cold air communicating air passage 117 connecting the refrigerating compartment cold air discharging air passage 115 with 117 is provided in the air passage of the refrigerating compartment cold air communicating air passage 116 to adjust the amount of cold air flowing into the refrigerating compartment 105. , 118 from the bottom of the refrigerator compartment 105 through the vegetable compartment 106,
A cold air return air passage 119 for returning cold air to the compressor is provided in a part of the freezer compartment 104, and the compressor 107 and the blower 11 are provided.
Freezer temperature detector that sends a signal to control 0 operation, 12
Reference numeral 0 denotes a refrigerating compartment temperature detector that sends a signal for controlling the opening and closing of the damper of the damper device 117.

With such a configuration, a separately provided control device operates based on a signal from the freezer compartment temperature detector 119, and when it is determined that the temperature in the freezer compartment 104 is higher than a set value, the compressor. 107 is driven. The cold air cooled by the cooler 108 by the operation of the compressor 107 is
The blower 110, which operates in synchronization with the compressor 107, collides with the partition plate 111 and is dispersed. One of the dispersed cool air is supplied to the freezer compartment 104 through the freezer compartment cool air outlet 112.
And is circulated in the freezer compartment 104 to be cooled and circulated, and returned to the cooler 108 from the freezer compartment cool air return air passage 114 to the freezer compartment 1.
Cool the inside of 04 to an appropriate temperature.

The other cold air is the cold air intake 1 of the cold storage room.
From 13 is sent to the cold room ventilation air passage 116,
At this time, the control device operates based on the signal from the refrigerating compartment temperature detector 120, and when it is determined that the temperature in the refrigerating compartment 105 is higher than the set value, the damper of the damper device 117 is opened and the refrigerating compartment 105 is opened. Cold room 1 from the cold air discharge air passage 115
Cool air is sent into 05. The sent cool air is circulated in the refrigerating chamber 105 for cooling and is returned to the cooler 108 from the refrigerating chamber cool air return air passage 118 to keep the refrigerating chamber 105 at an appropriate temperature.

[0006]

However, in the above-mentioned conventional refrigerator, one blower 110 is configured to forcibly ventilate cold air into the freezer compartment 104, the refrigerating compartment 105, the vegetable compartment 106 and the like. As for the cold air blown to each room, it is difficult to secure the necessary and sufficient air flow rate, and it is not easy to satisfy the desired cooling capacity. Orientation has become a more significant problem.

Further, in order to distribute the cool air to the respective chambers, the cold air flow discharged from the blower 110 is made to collide with the front partition plate 111 to form a pressure chamber. In this method, the discharge resistance of the blower 110 is reduced. As a result of the increase, there is a problem that the cooling efficiency is reduced due to the reduction of the blown air amount itself and the required power of the blower 110 is increased. In addition, the passage resistance of the damper device 117 provided in the refrigerating compartment cold air communication air passage 116 increases the air passage resistance to the refrigerating compartment 105, further lowers the cooling efficiency, and as a result, lowers the cooling capacity of the refrigerator. There is a problem in that the power consumption is increased or the power consumption is increased.

Further, even when the refrigerating compartment temperature detector 120 requires cooling to the refrigerating compartment 105, the operation of the blower 110 depends on the request signal from the freezing compartment temperature detector 119, so the refrigerating compartment 105. There is also a problem that the timing of blowing air to the refrigerator is deviated, and the cooling of the refrigerator compartment 105 is hindered.

In view of the above-mentioned problems, the present invention improves the efficiency of air blowing by a blower, and the freezer compartment without increasing power consumption.
It is an object of the present invention to provide a forced ventilation type refrigerator capable of exerting a necessary and sufficient cooling capacity for a refrigerating room.

[0010]

To achieve the above object, the refrigerator of the present invention is provided with two forced air blowers, one of which is a cool air discharge air passage circulated through a freezer compartment. In the route to the cool air return air passage, the other blower is installed independently in the route from the cool air discharge air passage that circulates through the refrigerating compartment to the cold air return air passage, and the temperature detectors in the freezer compartment and the refrigerating compartment It is to control each blower independently.

The two blowers are preferably arranged in parallel along the flow from the cooler. It is also possible to provide a control device that is provided with two rotation speed varying means for the blowers and sets the rotation speed lower than usual when the blower for the freezer operates independently.

Further, a quick cooling switch is provided for each of the freezing compartment and the refrigerating compartment, and when the rapid cooling switch is turned on, 2
It is provided with a control device that independently sets the rotation speeds of the two blowers to higher than usual.

[0013]

In the refrigerator of the present invention configured as described above, the blowers provided for the freezing room and the refrigerating room are provided in the respective rooms through independent cool air discharge air passages and cool air return air passages. Since it is operated individually when necessary based on the signal from the temperature detector to perform the cooling action, there is no collision resistance for the cool mood flow of the freezer compartment and the refrigerator compartment, and there is no passage resistance of the damper device, and there is no discharge. The amount of cold air is sent into each chamber without being significantly attenuated, and the cool air discharged from the two blowers arranged in parallel along the flow from the cooler does not flow into the cool air discharge air passage of each other independently. Blown.

Further, when the blower for the freezer compartment operates independently, the number of rotations is reduced, the induced backflow from the discharge air passage of the refrigerator compartment is suppressed, and at the same time, excessive power is required for the cooling load of the freezer compartment only. Without it, the necessary and sufficient cooling action is performed.

Further, by operating the quick cooling switches provided for the freezing compartment and the refrigerating compartment respectively, the rotation speed of each blower can be independently increased, and the freezing compartment and the refrigerating compartment can be fed to the freezing compartment or the refrigerating compartment more than usual. The air volume is supplied.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A refrigerator according to an embodiment of the present invention will be described below with reference to FIGS.

In the drawing, 1 is a refrigerator main body, 2 and 3 are partition walls, 4 is a freezer compartment, 5 is a refrigerating compartment, 6 is a vegetable compartment, 7 is a compressor, 8 is a cooler, 9 is a compressor 7, and cooling is performed. A condenser that forms a refrigeration cycle in cooperation with the container 8, 10 a freezer temperature detector, 11 a refrigerating room temperature detector, 12 a freezer air blower,
Reference numeral 13 denotes a refrigerating room blower, and the blowers 12 and 13 are arranged in parallel along the flow direction from the cooler 8.
Reference numeral 14 is a partition plate for partitioning the freezer compartment 4 and the cooler 8, and at the same time, the freezer compartment cool air discharge air passage 15 opened to the front of the freezer compartment blower 12 and the freezer compartment cool air return air passage communicating with the lower part of the cooler 8. 16 are configured. Reference numeral 17 denotes a refrigerating compartment cold air discharge air passage formed independently of the freezing compartment cold air discharge air passage 15.
The cool air discharged from the refrigerating room blower 13 acts. Reference numeral 18 denotes a refrigerating room cold air return air passage for collecting return cold air from the refrigerating room 5 to the cooler 8 via the vegetable compartment 6, and 19 is a control device such as a microcomputer having a freezer temperature detector on the input side. 10, a refrigerator temperature detector 11, a freezer rapid cooling switch 20 provided on the front surface of the refrigerator body 1, and a refrigerator rapid cooling switch 21 are connected, and a compressor 7, a freezer fan 12, a refrigerator are provided on the output side. A drive means for driving the room blower 13 and a rotation speed varying means 2 for independently changing the rotation speeds of the freezer compartment blower 12 and the refrigerating compartment blower 13 independently.
2, 23 are connected. Reference numerals 24 and 25 are timers for setting a rapid cooling time in association with the freezing room rapid cooling switch 20 and the refrigerating room rapid cooling switch 21.

The rotation speed varying means 22 and 23 are
When the blower 12 for the freezer compartment is operated independently, the rotation speed is lowered, and when the quick cooling switch 20 for the freezer compartment and the quick cooling switch 21 for the refrigerating compartment are turned on, the rotation speed is independently increased. .

With such a structure, when the temperature of the freezer compartment 4 is high, the compressor 7 and the freezer compartment blower 12 are operated by the signal from the freezer compartment temperature detector 10, and the cool air cooled by the cooler 8 is discharged. Freezer cold air discharge air passage 15 opened at the front
It is sent into the freezer compartment 4 through the free passage via. And
While cooling the freezer compartment 4 to a predetermined temperature, the freezer compartment cold air return air passage 1
It is recovered by the cooler 8 via 6. At this time, the cold air discharged from the freezer compartment blower 12 does not collide with the partition plate 14 and is dispersed, so that the ventilation resistance is reduced, the cooling capacity to the freezer compartment 4 is increased, and at the same time, the required power of the freezer compartment blower 12 is increased. This contributes to the reduction of the power consumption of the refrigerator.

On the other hand, when the temperature of the refrigerating compartment 5 is high, the refrigerating compartment blower 13 is operated by a signal from the refrigerating compartment temperature detector 11, so that the cool air cooled by the cooler 8 is discharged into the refrigerating compartment cool air. Directly into the refrigerating chamber 5. Then, while cooling the refrigerating compartment 5 to a predetermined temperature, the refrigerating compartment 5 is recovered by the cooler 8 via the cool air returning air passage 18. At this time, since no damper device is provided in the air passage of the refrigerating compartment cool air discharge air passage 17, the blowing resistance is reduced, the cooling capacity to the refrigerating compartment 5 is increased, and at the same time, the refrigerating compartment blower 13 is provided.
The power required for the refrigerator is reduced, which contributes to the reduction of the power consumption of the refrigerator. Further, since the cooling action can be independently exerted without depending on the temperature condition of the freezer compartment 4, there is no possibility that the timing of cooling is missed and the cooling of the refrigerating compartment 5 is hindered.

Further, the discharged cool air from the two blowers arranged in parallel along the flow from the cooler 8 is blown independently without acting in the cool air discharge air passage of each other, so that one blower is used. There is no possibility that unnecessary cold air is sent to the freezer compartment 4 or the refrigerating compartment 5 via the other cool air discharge air passage during the stop of the above, and the room temperature becomes unstable.

When the freezer compartment blower 12 operates independently, the rotation speed varying means 2 is operated by the control device 19.
2 and 23 are operated to reduce the number of revolutions and suppress the induced backflow from the refrigerating compartment cool air discharge air passage 17, so that the refrigerating compartment 4 does not suck in the cool air having a high temperature and cools. The ability is not spoiled. At the same time, the cooling load of only the freezer compartment 4 does not require excessive power and a necessary and sufficient cooling action is performed, which also contributes to reduction of power consumption of the refrigerator.

Further, by operating the quick cooling switches 20 and 21 provided for the freezing chamber 4 and the refrigerating chamber 5, respectively, the rotation speed varying means 22, 23 for the time set in the timers 24, 25. With this, the number of revolutions of each blower is independently increased, the amount of blown air is increased, and the food stored in the freezer compartment 4 and the refrigerating compartment 5 is quickly cooled.

[0024]

According to the refrigerator of the present invention constructed as described above, the following effects can be obtained.

Since the two blowers act on independent circulation air passages, it is not necessary to send the discharge cold air of the blower for the freezer compartment to the refrigerating compartment side by resistance distribution, and the cooling capacity to the freezer compartment is enhanced, The power required for the blower is also reduced, leading to a reduction in power consumption.

Further, since the damper device is not provided, the resistance to blowing is small, the cooling capacity to the refrigerating room is enhanced, the required power of the blower is reduced, and the power consumption is reduced.
In addition, since the refrigerating compartment can be cooled without depending on the temperature condition of the freezing compartment, the cooling of the refrigerating compartment is not hindered.

In addition, 2 in parallel along the flow from the cooler
Since the two air blowers are arranged, the independence of the respective cool air discharge air passages is enhanced, the cold air inflow by the other air blower can be prevented, and the indoor temperature does not become unstable.

In addition, since the rotation speed is reduced during the independent operation of the freezer fan, backflow induction from the refrigerating room is suppressed, cooling of the freezing room is not hindered, and the load amount of only the freezing room is increased. Proper cooling reduces the power of the blower, further reducing power consumption.

Further, by operating the respective quick cooling switches for the freezer compartment and the refrigerating compartment, the number of revolutions of each blower can be independently increased, and the quick freezing and quick cooling effects of the food can be provided together. it can.

[Brief description of drawings]

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

FIG. 2 is a vertical sectional view of the refrigerator.

FIG. 3 is a control block diagram of the refrigerator.

FIG. 4 is a front explanatory view of a conventional refrigerator.

FIG. 5 is a vertical sectional view of the refrigerator

[Explanation of symbols]

 4 Freezer 5 Refrigerator 8 Cooler 10 Freezer temperature detector 11 Refrigerator temperature detector 12 Freezer fan 13 Refrigerator fan 15 Freezer cold air discharge air duct 16 Freezer cold air return air passage 17 Cold air cold air discharge Air passage 18 Cold room cold air return air passage 19 Control device 20 Freezing room rapid cooling switch 21 Refrigerating room rapid cooling switch 22, 23 Rotation speed varying means

Claims (4)

[Claims] 1. A cool air discharge air passage and a cool air return air passage, which communicate with a freezer compartment and a refrigerating compartment independently from a cooler constituting a refrigeration cycle, and cool air from the cooler, And two blowers for independently forced circulation in the freezer compartment and the refrigerator compartment through the cold air return air passage,
A refrigerator comprising temperature detectors respectively provided in the freezer compartment and the refrigerating compartment, and a control device for independently controlling the operation of the blower based on signals from the temperature detectors. 2. The refrigerator according to claim 1, wherein the two blowers are provided in parallel with the cooler. 3. The refrigerator according to claim 1, further comprising a rotation speed varying means for the two blowers, and a control device for setting the rotation speed lower than usual when the blower communicating with the freezer compartment is operated independently. 4. The refrigerator according to claim 3, further comprising a control device for independently setting the rotation speeds of the two blowers to higher than usual when the rapid cooling switches provided in the freezer compartment and the refrigerating compartment are turned on.