JPH0569579U - Refrigerator cool air circulation device - Google Patents

Abstract

(57) [Summary] [Purpose] To improve cooling efficiency and supply cold air so that the temperature in the refrigerator is uniform. [Structure] A rotary duct 12 into which cold air flows by a cooling fan 8 is installed rotatably over a freezing compartment 4 and a refrigerating compartment 5. A large number of cool air discharge ports 14 are formed on the outer peripheral portion of the rotary duct, and a guide plate 15 is provided on one side of the cool air discharge ports so as to project.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cool air circulation device for a refrigerator, and in particular, a cool air circulation duct that rotates by discharging cold air is provided rotatably between a freezing room and a refrigerating room to uniformly supply cold air and to further improve cooling efficiency. Regarding the cold air circulation device of the refrigerator.

[0002]

[Prior Art]

 Generally, in a refrigerator, as shown in FIG. 4, a freezing compartment 35 and a refrigerating compartment 38 are defined on the upper and lower sides of a partition wall 40a formed in a refrigerator main body 40, and inside the partition wall 40a, An evaporator 31 that forms a cooling cycle is installed. The cool air cooled by the evaporator 31 is supplied to the inside of the freezer compartment 35 by a fan 33 that is rotated by the operation of the motor 32, through a cool air passage 34 formed in part with the duct member 41. The remaining cool air is supplied into the refrigerating chamber 38 through the cold air passage 37 to cool the inside.

Further, the cold air whose temperature has risen due to heat exchange with food stored in the freezer compartment and the refrigerating compartment passes through the cool air suction ports 36 and 39 formed on one side of the partition wall 40a, and the evaporator 31 It flows into the peripheral part of, is cooled, and repeats circulation again.

However, in the refrigerator as described above, although a certain amount of cold air is supplied to the freezing chamber to perform freezing, there is a problem that the cold air is discharged only on the wall surface side and the temperature distribution is not uniform. It was 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, so that the cooling efficiency is remarkably lowered, and at the same time, There was a problem that the temperature distribution was not uniform.

In order to solve this, Japanese Patent Laid-Open No. 2-233965 discloses, as shown in FIGS. 5 and 6, an evaporator 50, a freezer compartment 51 having a forced ventilation cooling cycle, and a forced compartment 51. A refrigerating chamber 53 equipped with a ventilation agitating fan 52, a duct 54 for connecting the refrigerating chamber 53 and the freezing chamber 51 to suck air in the freezing chamber by the agitating fan 52, and the inside of the duct 54. A refrigerator / freezer is disclosed which includes a damper thermostat 55 disposed on the windward side of the fan 52 and opened / closed according to the temperature of the refrigerating compartment, and an air passage for returning and discharging cool air from the refrigerating compartment 53 to the freezing compartment 51. ..

[0006]

[Problems to be solved by the device]

 However, in the conventional refrigerator as described above, since the cold air in the freezer compartment is supplied to the refrigerating compartment through the duct, the cooling efficiency is reduced and the cool air from the duct is discharged to the front of the refrigerating compartment. However, there was a problem that 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 air cooled by an evaporator to a freezing room and a refrigerating room. It is an object of the present invention to provide a cool air circulation device for a refrigerator, which not only improves the cooling efficiency by directly supplying it uniformly but also makes the temperature distribution in the refrigerator uniform.

[0008]

[Means for Solving the Problems]

 In order to achieve the above object, a cold air circulation device for a refrigerator according to the present invention includes a body including a heat insulating layer, a freezer compartment that is sorted and formed in the main body, and is cooled by cold air generated by operation of a refrigeration cycle. In a refrigerator having a refrigerating compartment, 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 the freezing compartment communicating with the cold air passage. It comprises a rotating duct which is installed to rotate freely up to the refrigerating chamber, and the outer peripheral surface of the rotating duct is provided with a number of cold air discharge ports for discharging cold air to the freezing chamber and the refrigerating chamber.

[0009]

【Example】

 Hereinafter, an embodiment of the present invention will be described in detail 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 refrigerating machine body 20, and the cold air suction member 3 divides a freezing room 4 and a refrigerating room 5 into compartments. ..

Further, a drive motor 6 is installed above the main body 20, and a cooling fan 8 is attached to a rotary shaft 7 that 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, and the 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. I am trying.

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 an upper end of the rotary duct 12 serves as an end of the cold air passage 11. It is rotatably mounted via a bearing member 13a so as to communicate with each other. A large number of cool air discharge ports 14 capable of discharging cool air are formed on the outer peripheral surface of the rotary duct 12, and one side of the cool air discharge port 14 guides the cool air discharged 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 refrigerating compartment 5 through the rotary duct 12.

At this time, when the cool air discharged through the cool air discharge port 14 hits the guide plate 15 in the rotary duct 12, 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 cool 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, when the air around the evaporator 10 is cooled by the operation of the refrigeration cycle and sent to the cold air passage 11, the cool air in the cold air passage 11 is introduced into the rotary duct 12 by the cooling fan 8 operated by the drive motor 6. Supplied.

Further, the cold air in the rotary duct 12 receives the pressure from 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 12 rotates while being supported by the bearings 13 and 13a. Then, cool air is uniformly discharged so that the temperature distribution is uniform throughout the inside of the refrigerator.

Further, if the opening / closing degree of the damper 16 is adjusted according to the temperature inside the refrigerating compartment 5, the temperature control of the refrigerating compartment 5 becomes possible.

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 and is sucked through the cold air suction ports 1 and 2, and then supplied to the peripheral portion of the evaporator 10 again. The circulation operation is repeated.

[0021]

[Effect of the device]

 Since the cold air circulation device of the refrigerator according to the present invention is configured as described above, it is possible to supply the cold air to the freezer compartment and the refrigerating room through the cold air discharge port rotated by the discharge of the cold air. Cooling air can be supplied uniformly throughout the whole, the temperature distribution can be kept uniform, and the cooling efficiency can be improved. 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.

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 refrigerating 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 an outer peripheral surface of the cold air circulating device. 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. 5. The cold air circulation device for a refrigerator according to claim 4, wherein the guide plate is formed obliquely on one side of the cool air discharge port.