KR200217733Y1 - Cold air disperser of refrigerator - Google Patents

Abstract

The present invention relates to the cold air discharge portion of the refrigerator, the purpose is to more effectively reduce the noise generated when driving the cold air dispersing device.

According to the cold air Busan device of the refrigerator according to the present invention, to move along the inclined groove 61 provided in the coupling cylinder 60 of the rotary blades 58, 59 to drive the vertical dispersion blade 62 in the vertical direction. The noise prevention tube 70 of the lubrication resin material is installed in the drive protrusion 65 of the drive shaft 64 for the purpose. Therefore, the driving protrusion 65 slides more easily along the inclined groove 61 to supply the cool air more stably, and the operation noise is further reduced, thereby improving the product reliability.

Description

Cold air disperser of refrigerator

The present invention relates to a cold air dispersing apparatus of a refrigerator, and more particularly, to a cold air dispersing apparatus of a refrigerator, which is installed at the rear wall of the refrigerator compartment and evenly distributes the cold air introduced from the evaporator side.

In general, the refrigerator is to maintain the freshness of various foods for a long time by supplying the cool air generated from the evaporator of the refrigeration cycle for a long time, Figure 1 is a cross-sectional view showing the internal structure of such a conventional refrigerator.

As shown in FIG. 1, the refrigerator has a main body 10 that forms an outer body and has storage compartments 11 and 12 formed therein, and is hinged to the front surface of the body 10 to store the storage compartments 11 and 12. Doors 11a and 12a for opening and closing, and a refrigeration cycle driving element built in the main body 10.

The storage compartment is divided up and down into the freezing compartment 11 and the refrigerating compartment 12 by an intermediate partition. The doors for opening and closing the compartments are also divided into a freezing compartment door 11a and a refrigerating compartment door 12a.

An evaporator 13 for generating cold air and a fan 14 for forcibly blowing the cold air generated by the evaporator 13 are disposed at the rear side of the freezing chamber 11. Moreover, the duct 15 which guides the cold air blown by the fan 13 to the freezing chamber 11 and the refrigerating chamber 12 side is installed in the rear wall of the freezing chamber 11 and the refrigerating chamber 12, respectively.

The duct 15 on the side of the freezing chamber 11 is provided with a discharge port 16 so as to communicate with the freezing chamber 11 so that the cold air blown by the fan 19 is discharged directly into the freezing chamber 11 through the discharge port 16. do.

And the refrigerating chamber 12 side duct 15 is provided with the rotary blade 17 and the vertical dispersion blade 22 and the duct cover 23 that covers them are arranged in the vertical longitudinal direction.

The rotary blade 17 is divided into an upper rotary blade 18 disposed in the vertical direction in the upper space of the duct 15 on the refrigerating chamber 12, and a lower rotary wing 19 disposed in the vertical direction in the lower space. The lower end of the upper rotary blade 18 and the upper portion of the lower rotary wing 19 are coupled to each other via a coupling cylinder 20 in which a coupling end is formed, and is integrally formed by a driving motor 26 installed on an upper portion of the duct 15. Rotational movement. At this time, the coupling end of the coupling cylinder 20 is formed in a cylindrical shape, the corresponding surface is gradient in the direction corresponding to each other, the inclined groove 21 is formed in the spiral direction along the outer peripheral surface in the middle portion.

Up-and-down dispersal wing 22 is configured in the shape of a crescent moon is installed on the back portion of the duct cover (23). That is, the upper and lower dispersing wings 22 are arranged to be spaced apart from the upper side of the duct cover 23 by a predetermined interval, and both ends thereof are hooked (not shown) to both side portions of the duct cover 23, respectively.

In addition, the plurality of vertically distributed blades 22 are arranged at equal intervals from the neighboring ones by the inner middle portion is rotatably coupled to the drive shaft 24 of the straight yarn.

In addition, as shown in FIG. 2, a driving protrusion 25 extending and protruding toward the rear side of the refrigerating chamber 12 is provided at an intermediate portion of the driving shaft 24. The driving protrusion 25 is fitted into the inclined groove 21 of the coupling cylinder 20 for connecting the upper and lower rotary blades 18 and 19 to the upper and lower rotary blades 18 and 19. During the rotational movement of the drive shaft 24 is to reciprocate in the vertical direction.

As a result, when the upper and lower rotary blades 18 and 19 rotate at the same time, the driving protrusion 25 moves up and down along the inclined groove 21 formed in a spiral shape, whereby the lower and lower blades 22 rotate up and down. By movement, the cold air flowing through the duct 15 is supplied to the refrigerating chamber 12 while being evenly distributed.

However, in the conventional refrigerator, the driving protrusion 25 for rotating the vertically distributed blades 22 moves up and down while sliding along the inclined groove 21 when the upper and lower rotary blades 18 and 19 rotate. In the process of changing the direction of movement receives a large friction force in contact with the coupling cylinder 20, which causes a significant friction noise has the disadvantage that the driving noise of the overall refrigerator is increased.

The present invention is to solve such a problem, an object of the present invention is to improve the driving projection provided in the middle of the drive shaft for operating the vertically distributed wings, the driving projection is slipped along the spiral inclined groove formed in the coupling cylinder It is to provide a cold air dispersing device of the refrigerator that can further reduce the operation noise generated during the movement.

1 is a side cross-sectional view showing the inside of a conventional refrigerator.

Figure 2 shows an extract of the combined portion of the conventional refrigerator driving projection.

Figure 3 is a side cross-sectional view showing the inside of the refrigerator according to the present invention.

Figure 4 is an extract showing the driving protrusion coupling portion of the cold air dispersing apparatus according to the present invention.

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

50 ... 51 body ... Freezer

52 ... refrigerator 53 ... evaporator

54 ... fan 55 ... duct

57.Rotary wing 60 ... Joining cylinder

61 ... inclined groove 62 ... upper and lower wing

63.Duct cover 64 ... Drive shaft

65 ... drive protrusion 70 ... noise protection tube

The present invention for achieving this object is;

A main body having a freezer compartment and a refrigerating compartment inside, an evaporator installed in the main body to generate cold air, a duct for guiding cold air generated from the evaporator to the freezer compartment and a refrigerating compartment, a duct cover provided at the rear wall of the refrigerating compartment to cover the duct, and a duct cover It is disposed inside and includes a cold air dispersing device for discharging and discharging the cold air flowing through the duct 로 to the cold chamber,

Cold air dispersing device is installed in the duct cover in the vertical direction and is provided with a plurality of distribution ribs on the rotating shaft to distribute cold air to the left and right, and a rotary blade with a coupling cylinder provided with a spiral inclined groove in the middle, and to drive the rotary wing A plurality of vertically distributed wings consisting of a drive motor for driving, a semicircular plate that is disposed on the front side of the rotary blade in a rotatable manner so that both ends are rotatably coupled to disperse the discharged cold air in the vertical direction, and the center positions of the vertically distributed blades are equally spaced. In the refrigerator having a drive shaft coupled to the rotational movement and the driving projection is formed so as to be inserted into the inclined groove in the middle of the drive shaft for moving the vertically distributed blade in the vertical direction through the rotational force of the rotary blade,

The driving protrusion is configured to be fitted with a noise prevention tube made of a lubrication resin material so that the tip of the driving protrusion slides along the inclined groove to prevent friction noise.

Hereinafter, with reference to the accompanying drawings a preferred embodiment according to the present invention will be described in detail. Briefly, the accompanying drawings, Figure 3 shows the overall internal structure of the refrigerator to which the present application is applied, Figure 4 is an extract showing the driving projection coupling portion of the cold air dispersing apparatus according to the present invention.

Referring to FIG. 3, the refrigerator according to the present invention includes a main body 50 and a storage compartment 51 and 52 on a housing in which storage compartments 51 and 52 are formed therein so as to store and store food. Doors 51a and 52a for opening and closing, and a refrigeration cycle component such as an evaporator 53.

The storage compartment is divided up and down by an intermediate partition and is divided into a freezing compartment 51 and a refrigerating compartment 52. The door is also hinged to one side of the front surface of the main body 50 to open and close the freezing compartment 51a and the refrigerating compartment 51. It is distinguished by the refrigerating chamber door 52a which opens and closes 52.

Behind the freezing chamber 51 is provided an evaporator 53 for generating cold air and a fan 54 for forcibly blowing the generated cold air disposed on the evaporator 53 directly to the freezing chamber 51 and the refrigerating chamber 52. . In the rear wall of the freezing chamber 51 and the refrigerating chamber 52, a duct 55 is set up so that cold air forcedly blown by the fan 54 is smoothly supplied into the freezing chamber 51 and the cold chamber 52. Reference numeral 56 is a cold air discharge port for guiding the cold air blown by the fan 54 to the freezing chamber 51.

And the rear wall of the refrigerating chamber 52 is arranged a cold air dispersing device for discharging the cold air flowing through the duct 55 evenly up and down, left and right, this is a rotary blade 57 is arranged to extend in the vertical direction, The upper and lower dispersion wings 62 and the duct cover 63 covering them are provided.

Rotating blade 57 is provided with a plurality of dispersion ribs on the rotating side is divided into the upper rotary blade 58 located on the upper side and the lower rotary blade 59 located on the lower side, these are combined cylinder 60 formed at each end ) Is connected in a straight line. The coupling cylinder 60 is formed in a cylindrical shape and is provided with a spiral inclined groove 61 in the middle portion. This inclined groove 61 is provided as a kind of closed curve along the outer periphery of the coupling cylinder 60, which is a It is for converting the vertical movement of the vertically distributed blade 62 through the driving protrusion 65, which will be described later. The rotary blades 58 and 59 are simultaneously rotated by the drive motor 66 installed on the duct 55.

The vertical dispersion blades 62 are arranged at regular intervals such that a plurality of upper and lower blades 62 form a double layer in the vertical direction at the front side of the rotary blades 58 and 59, that is, the rear portion of the duct cover 63. Up and down wing 62 is composed of a crescent-shaped semicircular plate-like, both ends are coupled to the rotational movement on both sides of the duct cover (63).

In addition, the plurality of vertical dispersion wings 62 are connected at equal intervals through the drive shaft 64 to be integrally driven. The drive shaft 64 is a kind of rod-shaped structure formed vertically long and is coupled to the central portion of the vertically dispersed wing 62 so as to be rotatable at equal intervals.

In addition, as shown in Figure 4, the middle of the drive shaft 64 is fitted into the inclined groove 61 is coupled to convert the rotational movement of the rotary blades 58, 59 to the up and down linear movement of the drive shaft 64. The driving protrusion # 5 is provided integrally. The driving protrusion 65 is formed to protrude rearward so that the front end portion is loosely coupled to the inclined groove 61 of the coupling cylinder 60, thereby moving up and down along the inclined groove 61 when the rotary blades 58 and 59 are rotated. Done. The driving protrusion 65 is fitted with a cylindrical noise preventing tube 70 for reducing friction noise with the inclined groove 61. Noise prevention tube 70 is composed of a lubricating resin material so that it can easily slide in the inclined groove 61 according to the rotational movement of the rotary blades 58, 59, which is composed of Teflon excellent heat resistance wear resistance desirable.

Next will be described the operation and effect of the cold air dispersing apparatus according to the present invention configured as described above.

First, when the fan 54 disposed above the evaporator 53 is driven, a part of the cold air generated by the evaporator 53 is endured into the freezer compartment 51 through the cold air outlet 56 to cool the food stored therein. The remaining part of the lower portion is lowered through the duct 55 is distributed evenly supplied to the refrigerating chamber (52).

At this time, the cold air supplied to the cold chamber 52 is three-dimensionally dispersed through the cold air dispersing apparatus. That is, the rotary blades 58 and 59 are rotated by the driving motor 66 to guide the cool air introduced into the duct 55 to the left and right.

In addition, the driving protrusion 65 is moved along the inclined groove 61 at the same time as the rotational movement of the rotary blades (58) and (59) to move up and down the drive shaft (64). As a result, the vertical dispersion blade 62 rotates up and down, so that a part of the cold air dispersed left and right is further dispersed up and down again, whereby cold air is distributed and supplied to the refrigerating chamber 52 vertically and horizontally.

On the other hand, the ascending and descending movement of the drive shaft 64 is made by a driving protrusion 65 sliding along the inclined groove 61, as described above, the movement of the driving protrusion 65 is a noise prevention tube ( 70) more easily.

That is, since the anti-noise tube 70 actually inserted into the driving protrusion 65 directly rubs against the slight groove 61, the sliding movement thereof becomes easier, so that the overall friction noise is reduced.

As described in detail above, according to the cold air dispersing apparatus of the refrigerator according to the present invention, the lubricant resin is driven to the driving projection of the drive shaft for driving the vertically distributed blades in the vertical direction by moving along the inclined grooves provided in the coupling cylinder of the rotary blades. Ash noise prevention tube is installed. Therefore, the driving protrusion slides more easily along the inclined groove, so that the cold air can be more stably distributed, and the operation noise is further reduced, thereby improving product reliability.

Claims (1)

The main body 50 having the freezing compartment 51 and the refrigerating chamber 52 partitioned therein, an evaporator 53 installed in the main body 50 to generate cold air, and cold air generated from the evaporator 53 in the freezing chamber ( 51 and the duct 55 for guiding to the refrigerating chamber 52, the duct cover 63 provided on the rear wall of the refrigerating chamber 52 to cover the duct 55, and disposed inside the duct cover 63. It includes a cold air dispersing device for discharging the cold air introduced through the duct 55 to the refrigerating chamber 52, The cold air dispersing device is installed in the vertical direction inside the duct cover 63, a plurality of dispersing ribs are provided on the rotating shaft to distribute cold air from side to side, and the coupling cylinder 60 is provided with a spiral inclined groove 61 in the middle. Rotating blades (58) and (59) provided with a driving motor (66) for driving the rotary blades (58) and (59), and cold air disposed on the front side of the rotary blades (58) and (59) to be discharged A plurality of vertically distributed blades 62 consisting of a semi-circular plate plate that both ends are rotatably coupled so as to guide the dispersion in the vertical direction, and the drive shaft coupled to the rotational movement of the center of the vertically distributed blades 62 at equal intervals. (64) and protruded to be inserted into the inclined groove 961 in the middle of the drive shaft 64 to move the vertical dispersion blade 62 in the vertical direction through the rotational force of the rotary blades (58, 59). In the refrigerator provided with a driving projection (65) for, The front end of the driving protrusion 65 is easily slid along the inclined groove 61 in the driving protrusion is composed of a lubricating resin material to prevent friction noise, characterized in that the noise prevention tube 70 is installed is fitted Cold air disperser.