KR0125755B1 - Cool air supply apparatus of refrigerators - Google Patents

Abstract

The cooling air supplier is designed to supply cooling air evenly over the entire perpendicular length of a cooling compartment of the refrigerator so that the cooling air is distributed evenly all over the part inside the cooling compartment in the horizontal and vertical directions. The cooling air supplier includes a refrigerator body(1), an evaporator(15) for generating cooling air, and a cooling air duct(51) for guiding the cooling air into the cooling compartment(5). The cooling air supplier further includes a rotatory damper(53) inclined at a predetermined angle inside the cooling air duct(51) so as to form different cooling air passages over the whole perpendicular length of the cooling compartment(5), a shaft member(55) arranged in the center of the transparent section of the rotatory damper(53) so as to eccentrically rotate the cross-section of the rotatory damper(53), and a motor(57) provided on either side of the shaft member(55) in order to generate power for rotating the rotatory damper(53).

Description

Refrigeration air supply unit

1 is a longitudinal sectional view showing a refrigerator having a conventional cold air supply device;

2 is a cross-sectional view showing a conventional cold air supply device,

3 is a perspective view of the rotary damper means of FIG.

Figure 4 is a longitudinal sectional view showing a refrigerator having a cold air supply apparatus according to an embodiment of the present invention,

Figure 5 is a cross-sectional view showing a cold air supply apparatus according to an embodiment of the present invention,

6 is a perspective view showing the discharge grill of FIG.

7 is a perspective view of the rotary damper of FIG.

8 is a cross-sectional view taken along line A-A, B-B and C-C in FIG. 7,

9 to 12 are operating state diagrams showing the rotational state of the rotary damper of FIG.

* Description of the symbols for the main parts of the drawings *

1: refrigerator body 5: refrigerator compartment

15: evaporator 51: cold duct

511: opening 53: rotary damper

55: rotating shaft member 57: motor

59: discharge grill 61: support means

According to the present invention, by supplying a uniform amount of cold air into the refrigerator compartment in various directions over the entire length of the refrigerator compartment, the refrigerator air can be uniformly distributed throughout the vertical and horizontal portions of the refrigerator compartment. It relates to a supply device.

In the conventional refrigerator, as illustrated in FIG. 1, a freezer compartment 3 is formed at an upper portion of the refrigerator main body 1, a refrigerator compartment 5 is formed at an intermediate portion of the refrigerator main body 1, and a refrigerator main body is formed. The vegetable chamber 7 is formed in the lower part of (1). And the freezing door 9 is arrange | positioned at the left side of the freezer compartment 3, The said refrigeration door 11 is arrange | positioned at the left side of the refrigerating compartment 5 and the vegetable compartment 7.

On the right side of the freezing chamber 3, an evaporator 15 is disposed with the first plate member 13 interposed to cool air circulating in the freezing chamber 3, the refrigerating chamber 5, and the vegetable chamber 7. On the upper side of the evaporator 15, the cold air generated from the evaporator 15 is discharged from the first cold air discharge port 16, circulated in the freezer compartment 3, and at the same time, through the first cold air duct 17. The fan 21 driven by the motor 19 is arrange | positioned so that it may circulate in 5 and the vegetable chamber 7. The first cold air duck 17 is disposed on the right side of the evaporator 15. In addition, a suction port 131 is formed at the lower portion of the first plate member 13 so that the air of the freezing chamber 3 is sucked into the evaporator 15.

In the refrigerating compartment 5, a plurality of shelves 23 are arranged in a Kankan manner for placing food to be refrigerated, and a vegetable container 25 is disposed in the vegetable compartment 7 to hold vegetables. The upper part of the partition member 27 partitioning the freezing compartment 3 and the refrigerating compartment 5 has a first return passage 271 such that air circulated in the freezing compartment 3 is returned to the evaporator 15. The second return passage 273 is formed in the lower portion of the partition member 27 so that the air circulated in the refrigerating chamber 5 and the vegetable chamber 7 is returned to the evaporator 15.

On the right side of the refrigerating compartment 5, a cold air supply device for supplying air into the refrigerating compartment 5 is arranged.

The cold air supply device has a patent application No. 94-7080 filed in the Republic of Korea April 4, 1994 by the applicant.

Patent application No. 94-7080, filed by the present applicant, shows cold air introduced from the first cold air duct 17 on the right side of the refrigerating chamber 5, as shown in FIG. The second cold air duct 29 is provided to guide the cold air to be supplied to 7), and the upper portion of the second cold air duct 29 is not shown to control the amount of cold air flowing through the second cold air duct 29. The damper driven by the drive means which is not provided is arrange | positioned. In addition, a plurality of second cold air discharge ports are provided on the left side of the second cold air duck 29 over the longitudinal direction of the second cold air chiller 29 so that the cold air passing through the upper damper 31 is discharged to the refrigerating chamber 5. 33 is formed, and the rotary damper means 40 is formed in the second cold air duct 29 so as to vary the amount of cold air discharged into the refrigerating chamber 5 through the second cold air discharge port 33 and the cold air direction. It is arrange | positioned by the fastening means which is not shown in the longitudinal direction of the 2nd cold air duct 29. As shown in FIG.

As shown in FIG. 3, the rotary damper means 40 has a box-shaped guide member 41 through which left and right sides pass to serve as a flow path for guiding cold air supplied to the refrigerating chamber 5, and the guide member ( 41, an eccentric shaft member 43 which is supported and rotated on the upper and lower surfaces thereof, and an elliptical cross-section-shaped long rod disposed on the eccentric shaft member 43 so as to eccentrically rotate the eccentric shaft member 43 to the rotation center axis. It consists of a rotary damper 45 and the motor 47 disposed below the guide member 41 to rotate the rotary damper 45 using the eccentric shaft member 43 as a medium.

In addition, an opening 35 is formed in the lower portion of the second cold air duct 29 so that the cold air is supplied to the vegetable chamber 7.

In the conventional refrigerator air supply device configured as described above, after the food to be frozen or refrigerated is placed in the refrigerator, a freezer or refrigeration door 9 and a refrigerated door are set by operating control means (not shown). When 11) is closed, the refrigerant is circulated inside the evaporator 15 by the operation of a refrigeration cycle (not shown), and the motor 19 operates. The fan 21 rotates by the operation of the motor 19, and the air inside the refrigerator circulates in the refrigerator by the rotation of the fan 21.

That is, the air passing through the evaporator 15 from the lower part of the evaporator 15 is converted into cold by the evaporator 15 and discharged to the freezing chamber 3 through the first discharge port 16 in the upper part of the freezing chamber 3. do. The cold air discharged into the freezer compartment 3 is changed to warm air while freezing the food placed in the freezer compartment 3. The warm air is sucked into the evaporator 15 through a first return passage 271 formed in the partition member 27 and a suction port 131 disposed in the lower portion of the first plate member 13. As described above, the food placed in the freezer compartment 3 is frozen by air circulating in the freezer compartment 3.

On the other hand, a portion of the cold air passing through the evaporator 15 is controlled by the damper 31 and flows into the second cold air duct 29 from the first cold duct 17. At this time, the motor 47 of the rotary damper means 40 disposed in the second cold air duct 29 is rotated, and the rotary damper 45 is rotated by the eccentric shaft member 43 by the rotation of the motor 47. Rotation) is formed between the guide member 41 and the rotary damper 45, a variety of cold air passage. The cold air introduced into the second cold air duct 29 passes through the second cold air discharge ports 33 through the various cold air passages and is discharged to the refrigerating chamber 5 in various directions. The motor 47 is controlled by control means (not shown) to rotate the rotary damper. The predetermined amount of cold air introduced into the second cold air duct 29 flows into the vegetable chamber 7 through a passage in the second cold air duct 29 that is not blocked by the rotary damper 45.

The cold air discharged into the refrigerating compartment 5 cools the food placed on the shelf 23 of the refrigerating compartment 5, and the cold air introduced into the vegetable compartment 7 enters the vegetable container 25 of the vegetable compartment 7. After cooling the stored vegetables and the like flows into the refrigerating chamber (5). The cold air is converted into warm air by chilling food or vegetables placed in the refrigerating compartment 5 and the vegetable compartment 7, and the warm air is transferred to the evaporator 15 through a second return passage 273 formed in the partition member 27. Inhaled). As described above, the food placed in the refrigerator compartment 5 and the vegetable compartment 7 is refrigerated at an appropriate temperature by the air circulating in the refrigerator compartment 5 and the vegetable compartment 7.

However, in the conventional cold air supply device configured as described above, the cold air passage formed by the rotary damper 45 rotated by the rotation of the motor 47 of the rotary damper means 40 changes frequently, and the second cold air duct ( 29 is supplied into the refrigerating chamber 5 in various directions through the second cold air discharge port 33 through the various cold air passages which are frequently changed, but in the longitudinal direction of the second cold air duct 33 at a certain time. Each cold air passage formed over is the same in shape. Therefore, the cold air introduced into the second cold air duct 29 flows from the upper portion to the lower portion and is discharged into the refrigerating chamber 5 through the second discharge port 33 so that the upper portion of the refrigerating chamber 5 is always higher than the lower portion of the refrigerating chamber 5. A large amount of cold air is discharged. Therefore, since the temperature distribution in the vertical direction in the refrigerating chamber 5 is different, there is a problem that foods to be refrigerated must be sorted by type and placed on the upper and lower portions of the refrigerating chamber 5.

Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is to supply a uniform amount of cool air into the refrigerating chamber in various directions in connection with the full length of the vertical direction of the refrigerating compartment of the refrigerator, thereby allowing the vertical and horizontal directions in the refrigerating compartment. It is to provide a cold air supply device of the refrigerator to uniformly distribute the cold air throughout the portion of the temperature distribution in the refrigerator compartment.

The cold air supply apparatus of the refrigerator according to the present invention made to achieve the above object is provided with a refrigerator main body, an evaporator for generating cold air, and a cold air duct for guiding the cold air to supply the cold air generated from the evaporator into the refrigerating chamber. In the cold air supply apparatus of the refrigerator, a rotary damper disposed at a predetermined slope inside the cold air duct to form different cold air passages over the entire length in the vertical direction of the refrigerating chamber, and the cross section of the rotary damper to rotate eccentrically And a motor disposed on one side of the rotary shaft member so as to generate power to rotate the rotary damper.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In addition, the same code | symbol is attached | subjected about the part same as the part shown in FIG. 1, and the overlapping description is abbreviate | omitted.

As shown in FIG. 4, on the right side of the refrigerating chamber 5, a generally cylindrical cold air duct 51 for guiding the cold air to supply the cold air generated from the evaporator 15 to the refrigerating chamber 5 and the vegetable chamber 7 is shown. And a cooling damper having a generally elliptical cross section so that the cold air discharged into the refrigerating chamber 5 forms a different cooling air passage over the length of the refrigerating chamber 5 in the vertical direction of the refrigerating chamber 5. 53 is disposed at a constant inclination with respect to the cold air duct 51, and the center of the cross section of the inclined rotary damper 53 projected on a plane rotates while the cross section of the rotary damper 53 is eccentrically rotated. The rotary shaft member 55 is disposed to penetrate and rotate the damper 53, and one side of the rotary shaft member 55 generates power to rotate the rotary damper 53 through the rotary shaft member 55. Motor 57 ship It is. Openings 511 and 513 are formed in the refrigerating chamber 5 side and the vegetable chamber 7 side of the cold air duct 51, respectively.

In addition, as shown in FIGS. 5 and 6, the opening 511 of the cold air duct 51 prevents the food placed in the refrigerating chamber 5 from contacting the rotary damper 53 and the rotation. The discharge grill 59 in which the grill is formed in the horizontal direction is disposed so as not to affect the direction of the cold air varied by the damper 53.

In the above description, the rotary shaft member 55 is rotatably supported by the supporting means 61 of FIG. 4 disposed at an upper end of the cold air duct 51, and the other end thereof is connected to the motor shaft of the motor 57. It is. As shown in FIGS. 7 and 8, the inside of the long damping rod-shaped damper 53 having an elliptical cross section is inclined to face the intermediate point of the length of the rotating shaft member 55 so as to be inclined. The through hole is formed to be fixed to the outer circumferential surface of the circumference).

The operation and effects of the cold air supply device of the refrigerator according to the present invention configured as described above will be described next.

First, when the refrigerator is operated by operating a control unit (not shown), the amount of cold air flowing into the refrigerating chamber 5 and the vegetable chamber 7 from the first cold duct 17 is adjusted by the damper 31, and the damper The cold air passing through the 31 flows into the cold air duct 51. At this time, the motor 57 disposed in the cold air duct 51 is rotated, and the rotary damper 53 is rotated using the rotating shaft member 55 as a medium by the rotation of the motor 57. As shown in FIG. 12, various cold air passages are formed in the cold air duct 51 to enter the refrigerating chamber 5, and the cold air introduced into the cold air duct 51 is discharged through the various cold air passages 59. It passes through the opening 591 of the and is discharged to the refrigerating chamber in various directions.

In the above description, since the rotary damper 53 is inclined at a predetermined angle with respect to the vertical direction of the cold air duct 51 as shown in FIG. 7, each of the rotary dampers 53 is formed over the longitudinal direction of the cold air duct 51 at a predetermined time. The cold passages are different in shape from each other. That is, at a certain point in time, a cold passage as shown in FIG. 9A is formed on the upper portion of the cold air duct 51, and a cold passage is formed in the middle portion of the cold duct 51 as shown in FIG. A cold air passage as shown in FIG. 9C is formed in the lower portion of the cold air duct 51. As the rotary damper 53 is rotated, the cold air passage as shown in FIG. 9A, FIG. 10A, FIG. 11A, and FIG. Are formed one by one, and cold air passages as shown in FIG. 9B, FIG. 10B, FIG. 11B, and FIG. 12B are formed in the middle of the cold air duct 51, respectively. In the lower part of the duct 51, the C air path of FIG. 9, C of FIG. 10, C of FIG. 11, and C of FIG. 12 are formed in order.

Therefore, the cold air introduced into the cold air duct 51 is discharged into the refrigerating chamber through the opening 591 of the discharge grill 59 in various directions over the entire length of the vertical direction of the refrigerating chamber of the refrigerator. At this time, since the grill is formed in the discharge grill 59 in the horizontal direction, the direction of the cold air changed by the cold air passage is not affected by the discharge grill 59.

As described above, the cold air supply apparatus of the refrigerator according to the present invention has a structure in which a rotary damper is inclined and rotated inside the cold air duct so as to vary a uniform amount of cold air over the entire length of the refrigerator's refrigerator. By supplying the refrigerating compartment in the refrigerating compartment, the temperature distribution in the refrigerating compartment is uniformly distributed by uniformly distributing the cold air over all the vertical and horizontal portions of the refrigerating compartment. It removes the hassle that has to be placed in the lower part and at the same time has a very good effect of good refrigeration of food placed in the refrigerator compartment.

Claims (2)

A refrigerator having a refrigerator main body (1), an evaporator (15) for generating cold air, and a cold air doctor (51) for guiding the cold air to supply cold air generated from the evaporator (15) into the refrigerating chamber (5). In the cold air supply device, a rotary damper (53) disposed at a predetermined slope inside the cold air duct (51) to form different cold air passages over the entire length of the refrigerating chamber (5), and the rotary damper ( The rotary shaft member 55 disposed at the center of the cross section of the inclined rotary damper 53 projected on a plane so that the cross section of the 53 is eccentrically rotated, and the power to rotate the rotary damper 53 is generated. Refrigerator air supply device, characterized in that consisting of a motor (57) disposed on one side of the rotating shaft member (55). The method of claim 1, wherein the opening 511 of the cold air duct 51 is controlled by the rotary damper 53 while preventing the food placed in the refrigerating chamber 5 from touching the rotary damper 53. And a discharge grill (59) having a grill formed in a horizontal direction so as not to affect the direction of cold air.