JPH11132627A - Refrigerator having cool air distribution blade - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator which has a cool air distribution device capable of dispersing cool air. SOLUTION: A planar horizontal distribution blade 43 is provided in a cool air duct of a cooling chamber to be rotatable centered on the vertical axis thereof and works to disperse cool air horizontally. In the cool air duct, a cam 51 is provided to be rotatable centered on the horizontal axis and a motor 59 to rotate the cam. The rotation of the cam 51 is converted to a reciprocal rotation of the horizontal distribution blade 43 through a transmission part 61. Therefore, as the cam 51 turns with the motor 59, the cool air delivered into the cooling chamber is dispersed horizontally by the horizontal distribution blade 43 to maintain the temperature uniformly in a cold storage chamber. This also enables concentrated delivery of the cool air to a specified position during the stoppage of the cam 51.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cabinet forming a cooling chamber, and at least one cold air discharge port provided in a side wall of the cooling chamber to form a cool air passage and open toward the inside of the cooling chamber. More particularly, the present invention relates to a refrigerator having a cool air distribution device for uniformly distributing cool air into a cooling room.

[0002]

2. Description of the Related Art Generally, a refrigerator has a pair of cooling chambers separated by an intermediate partition, ie, a freezer compartment and a cabinet forming a refrigerating compartment; A compressor for supplying cold air to the chamber,
A refrigeration system including a condenser and an evaporator.
Cool air generated from the evaporator flows along a supply duct formed in a rear wall of each cooling chamber, and is supplied to each cooling chamber through a cool air discharge port toward the cooling chamber by a blower fan.

However, in such a conventional refrigerator, there is a region where the cool air discharged through the cool air discharge port is provided intensively and a region where the cool air is supplied in a relatively small amount. There is a problem that uniform cooling is not performed. Then, a so-called three-dimensional cooling type refrigerator that has solved such problems has been proposed. In the three-dimensional cooling refrigerator, a large number of cooling air discharge ports are provided on the rear wall surface and both side wall surfaces of the cooling chamber, respectively, so as to uniformly supply the cool air.

However, even in such a refrigerator of the three-dimensional cooling type, since the cool air is discharged in a certain direction through the cool air discharge port, there may be a dead zone in a corner region where the supply of the cool air is insufficient. In particular, since the supply duct must be provided not only on the rear wall but also on the side wall of the cooling chamber, there is a problem that the accommodation space for food and drink is reduced, and the number of parts and the number of processes increase, thereby increasing the manufacturing cost. .

[0005] The uniform distribution of cool air in the cooling chamber has become a very important problem in connection with the enlargement of refrigerators.

In this connection, the applicant of the present invention has proposed in PCT application WO 95/27278 a refrigerator having a cold air distribution device. 1 to 3 are a side sectional view, a partially enlarged sectional view, and an exploded perspective view of main components of a refrigerator having the cool air distribution device.

[0007] In the refrigerator having the conventional cool air distribution device, a pair of cooling chambers 2 and 3 separated by an intermediate partition 5 are provided in a substantially rectangular cabinet 1. Each of the cooling chambers 2 and 3 is divided into a relatively low-temperature freezing chamber 2 and a relatively high-temperature refrigerator chamber 3. Opening doors 6 and 7 are provided at the front openings of the cooling chambers 2 and 3, respectively. In the cabinet 1, a refrigeration system including a compressor 11, a condenser (not shown), and a freezer evaporator 12a and a freezer evaporator 12b is provided. Each evaporator 12a, 12b
Is supplied to the cooling compartments 2 and 3 by the freezing compartment fan 13a and the refrigerating compartment fan 13b.

The inner wall plate 2 forming the rear inner wall surface of the refrigerator compartment 3
A partially cylindrical duct plate 9 having a cool air discharge port 16 opened toward the refrigerator compartment 3 is attached to the refrigerator compartment 3. The duct plate 9 and the rear wall 4 of the cabinet 1 are attached to the duct plate 9.
A supply duct 15 and a return duct 17 separated by a seal plate 25 are provided between the supply duct 15 and the return duct 17. Supply duct 1
Inside 5, a duct member 21 for guiding the cool air from the refrigerator compartment fan 13b downward is provided. Cold room evaporator 12
The cold air generated from the cold room 3b is transferred by the cold room fan 13b, passes through the supply duct 15 and the cold air discharge port 16, and is cooled.
Supplied to

In the supply duct 15, a cold air distribution device 130 is provided.
Is provided. The cool air distribution device 130 includes a rotating shaft 131 having a vertical axis and a cool air distribution blade 132 and a rotating shaft 1 coupled to the rotating shaft 131 corresponding to each cool air outlet 16.
31 is provided with a drive motor 135 for driving the rotation. Each cooling air distribution blade 132 is composed of three disks 136, 137, 138 arranged in parallel along the axial direction, and the disks 13
6, 137, 138, the first blade 133
And the second blade portion 134. Each blade 133,
134 is curved so as to have a slow S-shaped cross section, and each blade 133, 134 is bent in the opposite direction.

With such a configuration, the drive motor 135
While rotating the rotating shaft 131 at a low speed, the supply duct 1
The direction of the flow of the cool air moved along 5 is changed by the bent plate surface of the cool air distribution blade 132, and the cold air spreads right and left into the refrigerator compartment 3 and is dispersed right and left. On the other hand, when concentrated cooling is required for a specific portion, the rotating shaft 131 is stopped in accordance with the direction of the cold air distribution blade 132 so that the cool air is concentratedly discharged toward that portion.

However, such a cold air distribution device 130
Since each of the blade portions 133 and 134 is curved in a slow S-shape, a vortex may be formed around the cool air discharge port 16 to hinder the slow flow of cool air.

Further, the conventional cold air distribution device 130
Although uniform distribution of cool air in the horizontal direction can be achieved to some extent, uniform distribution of cool air in the vertical direction is not sufficiently performed, so that there is a limit to achieving uniform cooling of the entire refrigerator compartment 3. is there.

[0013]

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to achieve a uniform distribution of cold air in the horizontal and vertical directions without eddy currents in view of the conventional problems. It is to provide a refrigerator having a cold air distribution device that can be used.

[0014]

In order to solve the above-mentioned problems, the present invention is provided on one side wall of a cooling chamber, forms a cool air duct in the side wall, and is opened toward the inside of the cooling chamber. A duct plate having at least one cool air discharge port; a flat plate disposed vertically in the supply duct, rotatable about a vertical axis, and horizontally dispersing cool air in the supply duct according to the rotation angle position. A cam having a closed-loop cam profile rotatably mounted about the horizontal axis in the cold air duct and reciprocating along the horizontal axis; means for rotating the cam; and And a transmission unit for converting a rotary motion into a reciprocating rotary motion of the horizontal distribution blade.

Here, the transmission portion is a guide member having a guide groove parallel to the horizontal axis; and is provided on the guide member so as to be slidable along the guide groove, and is perpendicular to the horizontal distribution blade. A working bar disposed at one end contacting the cam and the other end coupled to the horizontal distribution vane.

Preferably, the horizontal distribution blade has a working groove formed in a part thereof in a horizontal direction. The working bar is inserted and connected into the working groove.

[0017] More preferably, a guide rib is formed at one portion of the operation bar, which is accommodated in the guide groove and guides the slide of the operation bar.

According to a preferred embodiment of the present invention, a pair of the cool air discharge ports are formed at upper and lower portions of the duct plate, respectively, and a pair of the horizontal distribution blades respectively correspond to the pair of cool air discharge ports. Be prepared to do so. At this time, the transmission unit is disposed between the pair of cold air discharge ports.

According to still another preferred refrigerator of the present invention, the pair of horizontal distribution blades are rotatable independently of each other, and are driven by the pair of transmission units respectively corresponding to the pair of horizontal distribution blades. At this time, it is preferable that the pair of horizontal distribution blades be rotated in different directions by the pair of transmission parts.

According to another aspect of the present invention, a refrigerator according to the present invention is provided so as to be rotatable about a horizontal axis in the cool air duct, and is disposed in parallel with each other. And a means for reciprocally rotating the vertical distribution blades within a predetermined angle range.

Here, the reciprocating rotating means is coupled to the vertical distribution blade at a position separated from the horizontal axis, and an interlocking member arranged vertically; and the interlocking member is reciprocally slid by the action bar. Includes elevating means for elevating the member.

Preferably, the elevating means includes a pair of slots formed at a predetermined angle with respect to each other and to which an operation projection formed on the operation bar and an elevation projection formed on the interlocking member are respectively coupled. And an elevating member rotatably fixed at the position.

According to a preferred embodiment of the present invention, the horizontal distribution blade includes a connecting protrusion protruding at a predetermined angle with respect to the plate surface, and a hinge pin formed on the connecting protrusion. A guide member having a guide groove parallel to the horizontal axis, and a groove provided in the guide member slidably along the guide groove, one end of which is in contact with the cam groove and the other end of which accommodates the hinge pin. Includes an action bar formed thereon.

Preferably, the rotating means is a stepping motor. Thereby, the position of the stop angle of the horizontal distribution blade and the vertical distribution blade can be controlled, and a specific portion can be intensively cooled.

According to the present invention, no vortex is generated around the cool air discharge port, and a uniform and stable flow of cool air and a uniform distribution in the horizontal and vertical directions can be achieved.

[0026]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In FIGS. 1 to 3 relating to the prior art and the drawings relating to the embodiment of the present invention, the same parts are denoted by the same reference numerals. In addition, in each of the embodiments, the overlapping description is omitted for the substantially same parts.

FIG. 4 is a front view of the refrigerator according to the first embodiment of the present invention, and FIG. 5 is a side sectional view of FIG. This refrigerator has a cabinet 1 forming an upper freezer compartment 2 and a lower refrigerating compartment 3 separated by an intermediate partition 5 like the conventional refrigerator described with reference to FIGS. 1 to 3. Opening doors 6 and 7 are provided at the front openings of the freezer compartment 2 and the refrigerator compartment 3, respectively. A shelf 8 for stacking and storing food is provided in the refrigerator compartment 3 and divides the refrigerator compartment 3 into three layered storage areas at the upper, middle and lower sides. A special cold storage room 18 for storing foods suitable for a specific temperature is formed on the upper side of the refrigerator compartment 3, and a vegetable compartment 19 for storing vegetables is formed on the lower side of the refrigerator compartment 3. Have been.

In the cabinet 1, a compressor 11, a condenser (not shown), a freezer evaporator 12a and a refrigerator evaporator 1 are provided.
2b is provided. The cool air generated from each evaporator 12a, 12b is
a and the refrigerator compartment fan 13b is supplied to the cooling compartments 2 and 3.

A supply duct 15 and a return duct 17 are provided behind the refrigerator compartment 3. The cool air generated from the cool room evaporator 12b is transferred to the cool room fan 13b and supplied to the cool room 3 through the supply duct 15 and the cool air discharge port 16. A vertical distribution device 30 is provided in the supply duct 15.

A pair of temperature sensors 19a,
19b is provided. The temperature sensors 19a and 19b are provided at the upper left end of the refrigerator compartment 3 at the first temperature sensors 19a and 19b.
a, and a second temperature sensor provided at the lower right end of the refrigerator compartment 3.

FIGS. 6 to 9 show a cool air distribution device 30 according to a first embodiment of the present invention. Cold air distribution device 30
Is the supply duct 15 formed by the duct plate 27
It is operated by a rotating shaft 45 vertically disposed in the inside, a horizontal distribution blade 43 provided on the rotating shaft 45, a cam 51 provided below the supply duct 15, a drive motor 59 for rotating the cam 51, and the cam 51. It includes a transmission part 61.

The rotating shaft 45 has support holes 32 provided at the upper and lower ends of the duct plate 27 at the upper and lower ends thereof.
29. Therefore, the rotation shaft 45 is rotatably supported by the support holes 32 and 29, and the horizontal distribution blade 43 is rotatable about the rotation shaft 45. The horizontal distribution blades 43 are arranged on the duct plate 2 depending on the rotation angle position.
The discharge direction in the horizontal direction of the cool air discharged through the cool air discharge port 16 formed in 7 is adjusted.

The horizontal distribution blade 43 is formed in a square plate shape. An operating groove 49 is formed on the lower edge of the horizontal distribution blade 43. The action groove 49 is formed in the horizontal direction along the plate surface of the horizontal distribution blade 43. The action groove 49 interacts with an action bar 69 described later.

The cam 51 has a cylindrical cam body 53,
The cam body 53 is provided with a cam shaft 56. Both ends of the cam shaft 56 are supported by cam brackets 33 and 35 formed below the duct plate 27. Therefore,
The cam body 53 is arranged in a horizontal direction so as to be rotatable about a cam shaft 56. A cam groove 55 is formed on the outer peripheral surface of the cam body 53. The cam groove 55 has a closed loop cam profile reciprocating along a cam shaft 56.

The drive motor 59 is fixed to a motor bracket 37 provided below the duct plate 27. The cam shaft 56 is connected to a drive shaft of a drive motor 59, whereby the cam 51 is rotated by the drive motor 59.
The drive motor 59 comprises a stepping motor capable of controlling the angular position.

The transmission 61 is provided at the lower part of the rear surface of the duct plate 27. The transmission portion 61 includes a guide member 63,
And an action bar provided on the guide member 63. Guide grooves 6 are provided on the front and lower surfaces of the guide member 63.
5 are formed, and another guide groove 67 is formed on the side surface of the guide member 63. Guide grooves 65, 67
Are formed in the horizontal direction in parallel with the cam shaft 56.

The operation bar 69 is guided through guide grooves 65 formed on the upper and lower surfaces of the guide member 63.
3 and is arranged vertically so as to be parallel to the rotation axis 45. The action bar 69 is slidable along the guide groove 65.

A guide rib 68 protruding laterally is formed at the center of the action bar 69. Guide rib 68
Are accommodated in the guide groove 67, and the sliding of the action bar 69 is guided by the guide rib 68 and the guide groove 67. The upper end of the operation bar 69 is inserted into the operation groove 49 of the horizontal distribution blade 43, and the lower end is inserted into the cam groove 55 of the cam 51.

FIGS. 8 and 9 show a state of discharging the cool air by the cool air distribution device 30 according to the first embodiment of the present invention. When the cam 51 is rotated by the drive motor 59, the action bar 69 reciprocates in the horizontal direction along the guide grooves 65 and 67. The sliding of the operation bar 69 is converted into the rotational movement of the horizontal distribution blade 43 by the operation groove 49. Therefore, the cam 5
While 1 is continuously rotating, the horizontal distribution blade 43 reciprocates between a state rotated to the left as shown in FIG. 8 and a state rotated to the right as shown in FIG.

When the horizontal distribution blade 43 is rotated to the left as shown in FIG. 8, the cool air in the supply duct 15 is discharged to the left area in the refrigerator compartment 3. Further, when the horizontal distribution blade 43 is rotated to the right as shown in FIG. 9, the cool air in the supply duct 15 is discharged to the right region in the refrigerator compartment 3. Therefore, while the horizontal distribution blades 43 reciprocate within the range of the predetermined angle, the cool air is dispersed in the horizontal direction, so that the cool air in the refrigerator compartment 3 is evenly distributed. Further, since the horizontal distribution blades 43 are formed in a flat plate shape, no vortex is generated during the cold air distribution operation of the horizontal distribution blades 43.

When it is necessary to supply chilled air to a specific area in the refrigerator compartment 3, the centralized cooling is realized by stopping the drive motor 59 with the horizontal distribution blade 43 facing the area. Can be. In this case,
The control unit (not shown) drives the drive motor 59 based on the sensing signals from the temperature sensors 9a and 9b. That is, when a temperature rise or fall of a specific portion in the refrigerator compartment 3 is sensed through the temperature sensors 9a and 9b, the control section controls the horizontal distribution blades 43 to guide the cool air toward the specific portion.
To stop. Therefore, the specific part whose temperature has been increased is centrally cooled, and the temperature of the refrigerator compartment 3 is maintained uniformly within a short time.

FIGS. 10 and 11 show a cool air distribution device 40 according to a second embodiment of the present invention. In the present embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals. Further, in the following embodiments, the same reference numerals are given to the same parts as those in the preceding embodiment. In the present embodiment, the configurations of the drive motor 59, the cam 51, and the transmission 61 are the same as those in the first embodiment.

In this embodiment, a pair of cold air outlets 16a and 16b are formed at the upper and lower portions of the duct plate 27, respectively. Further, a pair of horizontal distribution blades 43a and 43b are provided on the upper and lower portions of the rotating shaft 45, respectively. The pair of horizontal distribution blades 43a and 43b correspond to the pair of cold air discharge ports 16a and 16b, respectively.
The action groove 49 is formed on the lower edge of the upper horizontal distribution blade 43a.

The transmission 61, the cam 51, and the drive motor 59 are disposed between the pair of cold air discharge ports 16a and 16b. As in the first embodiment described above, both ends of the operation bar 69 are inserted into the cam groove 55 and the operation groove 49, respectively.

The operation of the cool air distribution device 40 according to this embodiment is the same as that of the above-described first embodiment. That is, when the drive motor 59 rotates the cam 51, the horizontal distribution blades 43 reciprocate within a predetermined angle range. Thereby, the cold air is dispersed in the horizontal direction. According to the present embodiment, since the cool air is discharged through the cool air discharge ports 16 a and 16 b respectively corresponding to the upper and lower portions of the refrigerator compartment 3, the cool air can be supplied to the layered areas in the refrigerator compartment 3.

In the present embodiment, a pair of cold air discharge ports 16a and 16b and a pair of horizontal distribution blades 43 are provided, but these are arranged in the refrigerating compartment 3 depending on the number of layered sections divided in the vertical direction. Can be changed. For example, if there are three layered areas, three cold air outlets and three horizontal distribution vanes can be provided.

FIGS. 12 to 14 show a cool air distribution device 50 according to a third embodiment of the present invention. In the present embodiment, the configurations of the drive motor 59 and the cam 51 are the same as those of the first embodiment. Further, in the present embodiment, as in the second embodiment described above, a pair of cold air discharge ports 16a and 16b are formed on the upper and lower portions of the duct plate 27, respectively. Also, a pair of horizontal distribution blades 4
3a and 43b are provided. A pair of horizontal distribution blades 4
3a and 43b correspond to a pair of cold air discharge ports 16a and 16b, respectively.

In the present embodiment, a pair of rotary shafts 45a, 45 corresponding to a pair of horizontal distribution blades 43a, 43b.
b is provided. The pair of rotating shafts 45a and 45b are arranged coaxially with each other. The upper end of the upper rotating shaft 45a is provided at a support hole 32 provided at an upper portion of the duct plate 27.
And the lower end of the lower rotary shaft 45b is inserted into a support hole 29 provided in the lower part of the duct plate 27.

At the upper end of the lower rotary shaft 45b, a coupling projection 4 is provided.
7 is formed, and a coupling hole 46 into which a coupling protrusion 47 is inserted is formed at a lower end portion of the upper rotation shaft 45a.
The upper rotating shaft 45a and the lower rotating shaft 45b are mutually connected and supported by the connecting protrusion 47 and the connecting hole 46. Therefore, each of the rotation shafts 45a and 45b can rotate independently of each other. The lower edge of the upper horizontal distribution blade 43a and the upper edge of the lower horizontal distribution blade 43b have action grooves 4 respectively.
9a and 49b are formed.

In the present embodiment, a pair of transmission portions 61a, 61 corresponding to the pair of horizontal distribution blades 43a, 43b.
b is provided. The configuration of each transmission portion 61a, 61b is the same as in the first and second embodiments described above. Further, the transmission portions 61a and 61b, the cam 51, and the drive motor 59 are disposed between the pair of cool air discharge ports 16a and 16b. At this time, the pair of transmission portions 61a and 61b are disposed above and below the cam 51, respectively.

The lower end and the upper end of the operation bar 69 of the upper transmission part 61a are inserted into the cam groove 55 and the operation groove 49a, respectively, and the upper end and the lower end of the operation bar 69 of the lower transmission part 61 are the cam groove 55 and the upper end, respectively. It is inserted into the action groove 49b.

When the cam 51 is rotated by the drive motor 59, each of the horizontal distribution blades 43a and 43b reciprocates within a predetermined angle range by each of the transmission portions 61a and 61b. At this time, two transmission parts 61 are controlled by one cam 51.
a, 61b are driven, so that each horizontal distribution blade 43a,
43b are rotated in different directions. That is, when the upper horizontal distribution blade 43a is rotated to the left as shown in FIG. 13, the lower horizontal distribution blade 43b is rotated to the right, and as shown in FIG. , The lower horizontal distribution blade 43b is rotated to the left. Therefore, the cold air is more effectively dispersed in the refrigerator compartment 3.

FIGS. 15 and 16 show a cool air distribution device 60 according to a fourth embodiment of the present invention. In the present embodiment, the drive motor 59, the cam 51, the horizontal distribution blade 4
3 and the configuration of the transmission unit 61 are the same as those of the above-described second embodiment.

In this embodiment, a number of flat vertical distribution blades 71 are provided in the supply duct 15.
The vertical distribution blades 71 are arranged in parallel with each other. Each vertical distribution blade 71 has a horizontal shaft 72 on both sides. Flanges 33a, 3 formed on the sides of the duct plate 27
A plurality of shaft holes 34 are formed in 3b, and the horizontal shaft 72 of the vertical distribution blade 71 is inserted into the shaft hole 34. Therefore, the vertical distribution blade 71 is supported rotatably about the horizontal axis 72. The vertical distribution blade 71 adjusts the vertical discharge direction of the cool air discharged through the cool air discharge ports 16a and 16b according to the rotation angle.

Each vertical distribution blade 71 is connected to a hinge 73
have. The hinge portion 73 is provided at a position separated from the horizontal shaft 72 by a predetermined distance.

A long bar-shaped interlocking member 81 arranged vertically is provided behind the duct plate 27. The interlocking member 81 has a number of hinge joints 82 arranged along the longitudinal direction. The hinge connecting portions 82 are respectively connected to the hinge portions 73 of the vertical distribution blade 71. As a result, the vertical distribution blades 71 are coupled to the interlocking member 81 while maintaining a parallel state.

As the interlocking member 81 moves up and down, the vertical distribution blade 71 reciprocates vertically about the horizontal axis 72. An elevating projection 83 which interacts with an elevating member 86 described later is provided at a central portion of the interlocking member 81.

The interlocking member 8 is provided on the back of the duct plate 27.
An elevating guide part 95 for raising and lowering 1 is provided. The elevating guide 95 is disposed below the transmission 61.
The elevating guide part 95 has the same structure as the transmission part 61 in substance. That is, the elevating guide portion 95 has the guide member 96 and the guide grooves 98 and 97 formed on the upper surface and the side surface of the guide member 96, respectively.

The lower part of the operation bar 69 of the transmission 61 is accommodated in the guide groove 98 provided on the upper surface of the guide member 96. Therefore, the sliding of the action bar 69 is guided by the guide groove 98. In addition, an operation projection 69 a penetrating the guide groove 97 of the elevating guide portion 95 is formed below the operation bar 69. The operation projection 69a interacts with the lifting member 86.

The elevating member 86 has a substantially V-shape with a pair of arms having a predetermined angle. At the end of the elevating member 86, there is formed a turning hole 84 which is connected to a turning shaft 99 projecting rearward from the rear wall surface of the duct plate 27. The elevating member 86 is fixed so as to be rotatable about a rotation shaft 99. The arm portions of the elevating member 86 are provided with slots 8 respectively.
1, 82 are formed. The operation projection 69a of the operation bar 69 is inserted into the upper slot 81, and the elevating projection 83 of the interlocking member 81 is inserted into the lower slot 82.

When the action bar 69 reciprocates along the guide groove 97, the elevating member 86 vertically reciprocates around the rotation shaft 99, whereby the interlocking member 81 reciprocates up and down. Therefore, the vertical distribution blade 71 reciprocates in the vertical direction within the range of the predetermined angle, and the cool air in the supply duct 15 is dispersed in the vertical direction and is discharged to the refrigerator compartment 3.

According to the present embodiment, while the cam 51 is rotated by the drive motor 59, the horizontal distribution blade 43 is reciprocated horizontally by the transmission unit 61, and the elevating guide unit 9 is rotated.
5. The vertical distribution blade 71 reciprocates vertically by the lifting member 86 and the interlocking member 81. Thus, cold air is distributed in the horizontal and vertical directions.

FIGS. 17 and 18 show a cool air distribution device 70 according to a fifth embodiment of the present invention. In this embodiment, the horizontal distribution blades 43a. 43b, rotating shafts 45a, 4
5b, the drive motor 59, the cam 51, and the transmission 61a,
The configuration of 61b is the same as the third embodiment described above. That is, a pair of horizontal distribution blades 43a and 43b are provided on a pair of independently rotatable rotation shafts 45a and 45b, and correspond to the pair of cold air discharge ports 16a and 16b, respectively.
Further, a pair of transmission portions 61a, 61b for driving the pair of horizontal distribution blades 43a, 43b, respectively, is provided.

In the present embodiment, the vertical distribution blade 71, the interlocking member 81, the elevating member 86, and the elevating guide 9
The configuration of No. 5 is the same as that of the above-described fifth embodiment. Accordingly, when the cam 51 is rotated by the drive motor 59, the horizontal distribution blades 43a, 43b are reciprocated within a predetermined angle by the transmission portions 61a, 61b, and the elevating guide portion 95,
The vertical distribution blade 7 is moved by the elevating member 86 and the interlocking member 81.
1 reciprocates within a predetermined angle range. Therefore, the cool air is distributed in the vertical and horizontal directions. The horizontal distribution blades 43a and 43b rotate in directions different from each other as described above in the third embodiment.

FIGS. 19 to 22 show a cool air distribution device 80 according to a sixth embodiment of the present invention. In the present embodiment, a rotating shaft 45 arranged vertically as in the first embodiment described above is provided in the supply duct 15, and the horizontal distribution blade 43 is fixed to the rotating shaft 45.

A hinge projection 4 is provided on the upper part of the horizontal distribution blade 43.
5d is formed. The hinge projection 45d is formed at a predetermined angle with respect to the plate surface of the horizontal distribution blade 43. A hinge pin 45e is formed on the hinge projection 45d and protrudes downward in parallel with the rotation shaft 45. The hinge pin 45e interacts with an action bar 115 described later.

In the present embodiment, the driving motor 109,
The configuration of the cam 101 is similar to that of the first embodiment. That is, the cam 101 has a cam body 103 and a cam groove 105, and the cam body 103 is provided with a cam shaft 106. However, in the present embodiment, the arrangement direction of the cam 101 is different from that of the first embodiment. That is, the cam 101 is arranged in the horizontal direction as in the first embodiment, but is arranged in a direction perpendicular to the cam 51 of the first embodiment.

The drive motor 109 is fixed by a motor bracket 110 fixed to the rear surface of the duct plate 27. One end of the cam shaft 106 is connected to the shaft of the drive motor 109, and the other end is inserted into a rear wall surface 29 provided behind the duct plate 27. Therefore, the cam 101 is rotatably supported. Further, the camshaft 1 is provided on the rear wall surface 29.
A guide member 117 arranged in parallel with the reference numeral 06 is fixed.

The guide member 117 has a guide groove (not shown) formed along the longitudinal direction, and the operation bar 115 penetrates the guide member 117 through the guide member. A pair of guide plates 116 is provided at the center of the action bar 115. The guide plate 116 is disposed so as to be in contact with both side surfaces of the guide member 117. The guide plate 116 supports the operation bar 115 at right angles to the guide member 117, so that the operation bar 115 can slide along the guide groove of the guide member 117.

One end of the operation bar 115 is inserted into the cam groove 105, and the other end of the operation bar 115 is provided with a hinge pin 45.
e are formed therein. Therefore, when the action bar 115 moves along the longitudinal direction of the guide member 117, the hinge pin 45e moves along the slot 111, and at this time, the horizontal distribution blade 43 rotates as shown in FIGS. .

As described above, while the cam 101 is rotated by the drive motor 109, the operation bar 11 is
5 reciprocate, and the reciprocating motion causes the horizontal distribution blade 43 to reciprocate within a predetermined angle range. Therefore, the cool air is dispersed in the horizontal direction.

[0072]

As described above, according to the present invention, it is possible to achieve a uniform and stable flow of cool air and a uniform distribution of cool air in the horizontal and vertical directions without generating a swirl around the cool air discharge port. Can be.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a conventional refrigerator having cool air distribution blades.

FIG. 2 is a partially enlarged sectional view of FIG.

FIG. 3 is an enlarged exploded perspective view of main elements of FIG. 2;

FIG. 4 is a front view of the refrigerator according to the first embodiment of the present invention.

FIG. 5 is a side sectional view of FIG. 4;

FIG. 6 is an enlarged exploded perspective view of the cool air distribution device shown in FIGS. 4 and 5;

FIG. 7 is a perspective view of the connected state of FIG. 6;

FIG. 8 is a partially enlarged view of FIG. 7;

FIG. 9 is a partially enlarged view of FIG. 7;

FIG. 10 is an exploded perspective view of a cool air distribution device according to a second embodiment of the present invention.

FIG. 11 is a perspective view of the connected state of FIG. 10;

FIG. 12 is an exploded perspective view of a cool air distribution device according to a third embodiment of the present invention.

FIG. 13 is a partially enlarged view of the combined state of FIG.

FIG. 14 is a partially enlarged view of the combined state of FIG.

FIG. 15 is an exploded perspective view of a cool air distribution device according to a fourth embodiment of the present invention.

FIG. 16 is a perspective view of the combined state of FIG.

FIG. 17 is an exploded perspective view of a cool air distribution device according to a fifth embodiment of the present invention.

FIG. 18 is a perspective view of the connected state of FIG. 17;

FIG. 19 is an exploded perspective view of a cool air distribution device according to a sixth embodiment of the present invention.

FIG. 20 is a perspective view of the connected state of FIG. 19;

FIG. 21 is an enlarged plan sectional view of FIG. 20;

FIG. 22 is an enlarged plan sectional view of FIG. 20;

[Explanation of symbols]

 3 Refrigerating Room 12b Refrigerating Room Evaporator 15 Supply Duct 16 Cold Air Discharge Port 30 Cold Air Distributor 43 Horizontal Distributing Blade 45 Rotating Shaft 49 Working Groove 51 Cam 59 Motor 61 Transmission 63 Guide Member 69 Working Bar 71 Vertical Distributing Blade 81 Interlocking Member 86 Elevating member 95 Elevating guide part 101 Cam 109 Motor 117 Guide member

 ────────────────────────────────────────────────── ─── Continued on the front page (31) Priority claim number 1997 48580 (32) Priority date September 24, 1997 (33) Priority claim country South Korea (KR) (31) Priority claim number 1997 48581 (32) Priority date September 24, 1997 (33) Priority claiming country South Korea (KR) (31) Priority claiming number 1997 50535 (32) Priority date September 30, 1997 (33) Priority claiming country Korea (KR)

Claims (15)

[Claims] 1. A duct plate provided on one side wall of a cooling chamber, forming a cool air duct in the side wall, and having at least one cool air discharge port opened toward the inside of the cooling chamber; A flat horizontal distribution blade that is rotatable about a vertical axis and that disperses cold air in the supply duct horizontally according to the rotation angle position; a horizontal axis centered in the cool air duct. A cam rotatably mounted and having a closed-loop cam profile reciprocating along the horizontal axis; means for rotating the cam; and a transmission for converting the rotational motion of the cam to the reciprocal rotary motion of the horizontal distribution blade. A refrigerator comprising a part. 2. The power transmission part is provided on the guide member having a guide groove parallel to the horizontal axis, and slidably provided along the guide groove, and is vertically arranged in parallel with the horizontal distribution blade. The refrigerator according to claim 1, further comprising an action bar having one end contacting the cam and the other end coupled to the horizontal distribution blade. 3. The operating blade according to claim 2, wherein the horizontal distribution vane has a working groove partially formed in a horizontal direction, and the working bar is inserted into and connected to the working groove. Refrigerator. 4. The refrigerator according to claim 2, wherein a guide rib accommodated in the guide groove and guiding the sliding of the operation bar is formed at one portion of the operation bar. . 5. The refrigerator according to claim 2, wherein the guide member is fixed to a duct plate. 6. The refrigerator according to claim 2, wherein a plurality of the cool air outlets and a plurality of horizontal distribution blades respectively corresponding to the cool air outlets are provided. 7. A pair of the cool air discharge ports are formed at upper and lower portions of the duct plate, respectively, and a pair of the horizontal distribution blades are provided so as to respectively correspond to the pair of cool air discharge ports. The refrigerator according to claim 6, wherein 8. The refrigerator according to claim 7, wherein the transmission unit is disposed between the pair of cold air discharge ports. 9. The refrigerator according to claim 8, wherein the pair of horizontal distribution blades are rotatable independently of each other, and the pair of transmission portions respectively corresponding to the pair of horizontal distribution blades are provided. . 10. The refrigerator according to claim 9, wherein the pair of horizontal distribution blades rotate in mutually different directions by the pair of transmission parts. 11. A plurality of flat vertical members rotatably provided around the horizontal axis in the cool air duct and arranged in parallel with each other, and vertically dispersing cool air in the cool air duct according to the rotation position. The refrigerator according to claim 2, further comprising: a distribution vane; and means for reciprocatingly rotating the vertical distribution vane within a predetermined angle range. 12. The reciprocating rotation means is coupled to the vertical distribution blade at a position separated from the horizontal axis, and is vertically interlocked; and the interlocking member is formed by reciprocatingly sliding the action bar. The refrigerator according to claim 11, further comprising elevating means for elevating the elevating device. 13. The lifting means includes a pair of slots formed at a predetermined angle with respect to each other and coupled to an operation projection formed on the operation bar and an elevation projection formed on the interlocking member. 2. The apparatus according to claim 1, further comprising an elevating member rotatably fixed at the position.
3. The refrigerator according to 2. 14. The horizontal distribution blade includes a coupling protrusion protruding at a predetermined angle with respect to the plate surface, and a hinge pin formed on the coupling protrusion. The transmission unit includes a guide parallel to the horizontal axis. A guide member having a groove, and an action bar provided on the guide member so as to be slidable along the guide groove, one end of which is in contact with the cam groove and the other end of which is formed with a slot for receiving the hinge pin. The refrigerator according to claim 1, wherein: 15. The refrigerator according to claim 1, wherein said rotating means is a stepping motor.