JPH087333Y2 - Refrigerator cold air circulation device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cool air circulation device for a refrigerator, and in particular, a cool air circulation duct that is rotated by discharge of cold air is rotatably provided between a freezing room and a refrigerating room to uniformly supply cold air. The present invention relates to a cool air circulation device for a refrigerator designed to further improve cooling efficiency.

[0002]

2. Description of the Related Art Generally, in a refrigerator, as shown in FIG. 4, a freezing compartment 35 and a refrigerating compartment 38 are formed on the upper and lower sides of a partition wall 40a formed in a refrigerator body 40.
In the partition wall 40a, the evaporator 3 forming a cooling cycle is provided.
1 is installed. The cool air cooled by the evaporator 31 is partially supplied to the freezing chamber 35 through the cool air passage 34 formed between the fan 33 and the duct member 41 by the rotation of the motor 32. Cold air is supplied into the refrigerating chamber 38 through the cold air passage 37 to cool the inside of the refrigerator.

Further, the cold air whose temperature has risen due to heat exchange with foods stored in the freezer compartment and the refrigerating compartment is separated by the partition wall 40a.
After passing through the cool air suction ports 36 and 39 formed on one side, the gas flows into the peripheral portion of the evaporator 31 to be cooled, and the circulation is repeated again.

However, the refrigerator as described above supplies a certain amount of cold air into the freezing chamber to perform freezing, but there is a problem that the cold air is discharged only on the wall surface side and the temperature distribution is not uniform. . Further, since the cold air is supplied only to the cold air passage formed on the upper side of the refrigerating room, the cool air is not sufficiently supplied to the lower part of the refrigerating room and the door side, the cooling efficiency is significantly lowered, and the temperature inside the refrigerator is decreased. There was a problem that the distribution was not uniform.

Therefore, in order to solve this, Japanese Unexamined Patent Application Publication No. Hei 2
In JP-A-233965, as shown in FIGS. 5 and 6, a freezer compartment 51 having an evaporator 50 and a forced-air cooling cycle, a refrigerating compartment 53 provided with a forced-air internal stirring fan 52, A duct 5 that connects the refrigerating chamber 53 and the freezing chamber 51 to draw in air from the freezing chamber by the agitating fan 52 in the refrigerator.
4, a damper thermostat 55 arranged on the windward side of the fan 52 in the duct 54 and opened / closed by the temperature of the refrigerating compartment, and an air passage for returning the cool air from the refrigerating compartment 53 to the freezing compartment 51 for discharging. A refrigerator is disclosed.

[0006]

However, in the conventional refrigerator as described above, since the cool air in the freezer compartment is supplied to the refrigerating compartment through the duct, the cooling efficiency is lowered and the cool air from the duct is not removed. There was a problem that the air was discharged to the front of the refrigerating compartment and the cool air was not smoothly supplied to the lower side of the duct, and the temperature distribution inside the refrigerator was not uniform.

Therefore, the present invention has been made in order to solve the above-mentioned problems of the prior art, and an object of the present invention is to cool the cold air cooled by the evaporator to the freezing room and the refrigerating room. It is an object of the present invention to provide a cool air circulation device for a refrigerator that not only improves the cooling efficiency by directly supplying it uniformly but also makes the temperature distribution in the refrigerator uniform.

[0008]

In order to achieve the above object, a cold air circulation device of a refrigerator according to the present invention is formed by a body consisting of a heat insulating layer and a refrigerating cycle which is formed in the body separately. In a refrigerator including a freezing compartment and a refrigerating compartment that are cooled by cold air, a cold air passage formed on one side of the freezing compartment, a drive motor having a cooling fan located in the cold air passage, and a communication path to the cold air passage. Then, consisting of a rotary duct rotatably provided to the freezing room and the refrigerating room, the outer peripheral surface of the rotary duct,
A large number of cool air discharge ports for discharging cool air are formed in the freezer compartment and the refrigerator compartment.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

In FIG. 1, reference numeral 20 indicates a refrigerator body made of a heat insulating layer. A cold air suction member 3 having cold air suction ports 1 and 2 on the upper and lower sides is installed in the refrigerator main body 20, and the cold air suction member 3 divides a freezing chamber 4 and a refrigerating chamber 5 into compartments.

Further, a drive motor 6 is installed on the upper part of the main body 20, and a cooling fan 8 is attached to a rotary shaft 7 which rotates with the operation of the drive motor 6. Further, an evaporator 10 forming a refrigeration cycle is installed on the back side of the freezer compartment 4 so that cooled cold air is supplied to the upper side of the freezer compartment 4 through a cold air passage 11 formed on the upper side thereof. There is.

As shown in FIG. 2, a rotary duct 12 is rotatably attached to the cold air suction member 3 via a bearing member 13, and the upper end of the rotary duct 12 is
Bearing member 1 so as to communicate with the end of cold air passage 11
It is rotatably attached via 3a. A large number of cold air discharge ports 14 capable of discharging cold air are formed on the outer peripheral surface of the rotary duct 12, and one side of the cold air discharge port 14 guides the discharged cool air as shown in FIG. A guide plate 15 is provided so as to project obliquely. Therefore, the cold air cooled by the evaporator 10 is supplied to the freezer compartment and the refrigerator compartment 5 through the rotary duct 12.

At this time, the rotary duct 12 has the cold air discharge port 14
When the cool air discharged through the bumps collides with the guide plate 15, a rotational force is generated, and the cool air is uniformly supplied while rotating as shown in FIG.

Further, a damper 16 for adjusting the cold air supplied from the evaporator 10 is rotatably formed inside the rotary duct 12, and the damper 16 is appropriately opened and closed depending on the temperature in the refrigerating chamber 5. Thus, the temperature inside the refrigerator compartment 5 is controlled.

Next, the operation of the device according to the present invention will be described.

First, the evaporator 1 is operated by the operation of the refrigeration cycle.
0 When the surrounding air is cooled and sent to the cold air passage 11,
The cooling air in the cold air passage 11 is supplied into the rotary duct 12 by the cooling fan 8 operated by the drive motor 6.

Further, the cold air in the rotary duct 12 flows under the pressure of the cooling fan 8 and flows downward, and is discharged into the freezing chamber 4 and the refrigerating chamber 5 through the cold air discharge port 14.

At this time, the cool air discharged through the cool air discharge port 14 collides with the guide plate 15 to generate a rotational force in the rotary duct 12, whereby the rotary duct 1 is rotated.
2 rotates while being supported by bearings 13 and 13a,
Cold air is uniformly discharged so that the temperature distribution is uniform throughout the inside of the refrigerator.

Further, according to the temperature in the refrigerator compartment 5, the damper 1
By adjusting the opening / closing degree of 6, the temperature of the refrigerator compartment 5 can be controlled.

Further, the cold air discharged into the freezer compartment 4 and the refrigerating compartment 5 circulates in the direction of the arrow in FIG. 1, is sucked in through the cold air suction ports 1 and 2, and is then supplied to the peripheral portion of the evaporator 10 again. Repeated circulation operation is performed.

[0021]

Since the cold air circulation device of the refrigerator according to the present invention is configured as described above, it is possible to supply cold air to the freezer compartment and the refrigerating room through the cold air discharge port that rotates by discharging cold air. With this, it is possible to uniformly supply the cool air throughout the inside of the refrigerator, keep the temperature distribution uniform, and improve the cooling efficiency. Further, the temperature inside the refrigerating chamber can be easily controlled by adjusting the amount of cold air supplied according to the opening / closing degree of the damper.

[Brief description of drawings]

FIG. 1 is an overall side sectional view of a refrigerator having a cool air circulation device according to the present invention.

FIG. 2 is a perspective view of a main part of the cold air circulation device shown in FIG.

FIG. 3 is an enlarged perspective view showing details of a cold air discharge port of the cold air circulation device shown in FIG.

FIG. 4 is an overall vertical sectional view showing an internal structure of a conventional refrigerator.

FIG. 5 is a side sectional view showing an internal structure of a conventional refrigerator.

FIG. 6 is a front sectional view of the refrigerator shown in FIG.

[Explanation of symbols]

 4 Freezing Room 5 Refrigerating Room 6 Drive Motor 8 Cooling Fan 11 Cold Air Passage 12 Rotating Duct 13, 13a Bearing Member 14 Cold Air Discharge Port 15 Guide Plate

Claims (5)

[Scope of utility model registration request] 1. A refrigerator provided with a main body made of a heat insulating layer, a freezer compartment that is separately formed in the main body and cooled by cold air generated by the operation of a refrigeration cycle, and a refrigerating compartment, wherein one side of the freezer compartment is provided. The rotary duct includes a formed cold air passage, a drive motor having a cooling fan located in the cold air passage, and a rotary duct that is connected to the cold air passage and is rotatably provided between the freezing compartment and the refrigerating compartment. A cold air circulation device for a refrigerator, characterized in that a plurality of cold air discharge ports for discharging cold air to the freezing chamber and the refrigerating chamber are formed on the outer peripheral surface of the refrigerator. 2. The cold air circulation device for a refrigerator according to claim 1, wherein a damper that opens and closes according to the temperature of the refrigerating chamber is rotatably provided inside the rotary duct. 3. The cold air circulation device for a refrigerator according to claim 1, wherein the rotary duct is rotatably attached by a bearing member. 4. The cold air circulation device for a refrigerator according to claim 1, wherein the cold air discharge port is provided with a guide plate projecting to one side of the cool air discharge port to collide with the cool air. 5. The cold air circulation device for a refrigerator according to claim 4, wherein the guide plate is obliquely formed on one side of the cool air discharge port.