KR200161920Y1 - Cool air control device of a refrigerator - Google Patents

Abstract

The present invention relates to a cold air control device for controlling the supply of cold air to the refrigerator compartment.

According to the present invention, circular ribs are formed to open and close the cold air passage between the shroud and the grill pan, and a plurality of cold air passages are formed in upper and lower portions of the circular ribs. In addition, the adjustment knob is rotatably inserted into the circular rib, and also forms a cold air through hole in the radial direction, only by the rotation of the adjustment knob through the portion where the cold through hole of the circular rib coincides with the cold through hole of the adjustment knob. Cold air can pass through.

Description

Cold air conditioner in the fridge.

1 is a cross-sectional view showing the overall configuration of a typical refrigerator.

2 is an enlarged view of portion A of FIG.

3 is a perspective view of the adjusting device according to the first embodiment of the present invention.

4 is a cross-sectional view of the adjusting device according to the first embodiment of the present invention.

Figure 5 is a perspective view of the adjusting device according to a second embodiment of the present invention.

Figure 6 is a perspective view of the adjusting device according to a second embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

10: shroud 12: grill pan

12h: circular opening 30: war rib

32: cold air passage 40, 50: adjustment knob

32, 46a, 47a: cold air passage 46: upper guide

47: lower guide 55: screw hole

60: opening and closing block 62: screw projection

The present invention relates to a refrigerating compartment cold air volume control device supplied from the refrigerator to the refrigerating compartment, and more particularly to a refrigerating compartment cold air volume control unit configured to enable the smooth operation of the control knob and precise cold air control.

First, the general structure of a conventional refrigerator will be described with reference to FIG. 1. As shown, the refrigerator is divided into a freezer compartment 2 and a refrigerating compartment 4 and heat exchanged in the evaporator 6 provided at the rear of the freezer compartment 2 to generate cold air. A part of the generated cold air is supplied to the freezing chamber 2 through the shroud 10 and the grill pan 12 by the blowing fan 8, and the other part of the cold air is a grill pan at the front of the shroud 10. Guided by 12) is guided to the refrigerator compartment cold passage (14).

The cold air guided downward through the refrigerating chamber cold passage 14 supplies cold air to the inside of the refrigerating chamber through the refrigerating chamber duct 16 provided at the rear of the refrigerating chamber 4.

On the refrigerating compartment cold passage 14, there is provided a cold air conditioner 20 that regulates the supply of cold air to the refrigerating compartment, and FIG. 2 is an enlarged sectional view of this portion (part A of FIG. 1).

As shown in the drawing, the cold air conditioner 20 is protruded in front of the grill pan 12 to be molded along the outer periphery of the central portion of the knob 22 and the knob 22 for the user to perform a rotation operation. And a cold air passing hole 22b formed in the radial direction at the rear end of the grip knob.

The shaft protrusion 22a is rotatable to the upper support portion 26 and the lower support portion 24 attached between the grill pan 12 and the shroud 10 in which the knob 22 is inserted. It is inserted. A cold air passage 24a is formed at the rear end of the lower support portion 24, that is, directly under the cold air passage hole 22b of the knob 22.

When the knob 22 is rotated, the knob 22 can rotate about the shaft protrusion 22a which is supported while being inserted into the upper support 26 and the lower support 24 at the same time. By the rotation of the knob 22, the cold air passing hole 24a is located in the vertical direction or maintains a predetermined rotational angle, and at this time, the cold air of the cold air passing hole 24a and the lower support part 24 is maintained. Cold air is supplied through the refrigerating chamber cold passage 14 within a range where the passage holes 24a coincide. When the knob 22 is rotated so that the cold air passage 22b of the knob is set in a horizontal state, the amount of cold air supplied through the cold air passage and the holes 14 is almost eliminated. And when inserting the said knob 22 between the upper support part 26 and the lower support part 24, after opening the upper support part 26 and the lower support part 24, the knob is inserted so that it may be rotatably supported. .

However, according to the conventional structure configured as described above, the following disadvantages are pointed out.

When the knob 22 is inserted between the upper support part 26 and the lower support part 24, the upper support part and the lower support part are opened and inserted so that the upper support part 26 and the upper part after the knob 22 is fully mounted. The lower support portion 24 must elastically deform and return to its original position. In practice, however, the upper support 26 and the lower support 24 are completely elastically deformed and do not return to their original positions, resulting in a gap between the upper and lower support portions 24 and 26 and the knob. Cold air leaks, making it difficult to accurately control the amount of cold air. In severe cases, the knob may disengage from the upper and lower support portions 24 and 26.

In addition, due to the above problems, there are also disadvantages in appearance due to the difficulty in controlling the temperature of the freezer compartment or the occurrence of gap due to the outflow of cold air into the freezer compartment.

It is an object of the present invention to provide a cold air conditioner, in which the amount of cold air supplied to the refrigerating chamber is accurate.

The cold air control device according to the present invention for achieving the above object, the first and second plate-like member having a cold air passage of a predetermined width, one side having a circular opening portion, and the plate-like member is connected to each other at the circular opening portion And a circular rib rotatably inserted between the circular ribs and a plurality of cold air passing holes formed on the circumferential surface thereof, and having a cold air passing hole in a radial direction, wherein the adjustment knob is rotated by the adjustment knob. Cold air can pass through the portion where the cold air through hole and the cold air through hole of the circular rib communicate.

According to another embodiment of the present invention, the upper and lower sides of the cold air passage formed by the first and second plate-like member and the first and second plate-like member having a predetermined width, the circular opening is formed on one side Installed in the corresponding position, the upper and lower guides are formed in the cold air through hole, the adjustment knob is rotatably installed through the circular opening, the opening and closing block to control the opening and closing of the cold air through hole of the upper and lower guide, and the control knob It consists of a converting means for converting the rotational movement of the opening and closing block to the linear movement, the rotation of the control knob to adjust the opening and closing degree of the cold air passage while the linear reciprocating movement of the opening and closing block.

And according to one embodiment of the conversion means, the planar portion formed on at least a portion of each of the upper and lower guides, the upper and lower plane portion formed on at least a portion of the opening and closing block guided to the planar portion, and on one side of the opening and closing block It is formed by a screw projection, which is molded and threaded on its outer circumference, and a screw hole of an adjusting knob engaged with the screw projection. According to this embodiment, the opening and closing block and the adjusting knob are screwed to each other to engage with each other, and by forming a flat portion for preventing rotation of the opening and closing block, the opening and closing block is configured to linearly reciprocate by the rotation of the adjusting knob.

Next, the present invention will be described in more detail with reference to the embodiments shown in the drawings. The same components will be described with the same reference numerals.

3 and 4 show the cold air control device according to the first embodiment of the present invention. As shown, according to the present invention, the circular rib 30 is molded to the shroud 10 to the rear of the grill pan 12. The inside of the circular rib 30 is to shape the circular opening 34 in the open shape. A plurality of cold air passing holes 32 are formed on the upper and lower portions of the circular ribs 30. In fact, the cold air passing hole 32 is concentrated only on the upper and lower portions of the circular rib (30).

And the adjustment knob 40 according to the present invention, the knob handle 44 protruding from the circular opening 34 of the circular rib 30 of the grill pan 12, the user can perform a rotation operation, and the knob It is composed of a circular body portion 41 is formed with a predetermined step so that the rear of the handle 44 can be caught on the back surface of the grill pan 12. The body portion 41 is rotatably supported on the rear surface of the grill pan 12 without being separated from the front of the grill pan 12 by molding with the step, and the inner side of the circular rib 30 It is in close contact with rotatable. And the upper and lower portion of the body portion 41 is formed through the cold air hole (42). The cold air passage 42 is to be intermittent supply of cold air by whether the circular rib 30 is matched with the plurality of cold air passage 32.

Next, with reference to Figure 4, it looks at the adjustment operation of the cold air.

In the state shown in FIG. 4, the cold air passing hole 42 formed in the circular body portion 41 of the adjustment knob 40 and the cold air passing hole 32 formed in the circular rib 30 are completely coincident with each other. It consists of states. Therefore, in this state, the cold air supplied from the upper side can be supplied to the lower refrigerating chamber duct while passing through the control knob 40 according to the present invention.

In this state, when the operator rotates the handle 44 of the adjustment knob 40, the cold air passing hole 42 formed at the rear end of the adjustment knob 40 is formed on the circular rib 30. It is spaced apart from the cold air passing hole 32, and the cold air does not pass.

As shown, a plurality of cold air passing holes 32 formed in the substantially circular ribs 30, the cold air passing holes 42 of the adjustment knob 40 is formed in one up and down. Therefore, by appropriately rotating the adjustment knob 40, by supplying the cold air through hole 42 of the adjustment knob 40 in communication with the number of cold air through holes 32 of the circular rib 30, It becomes possible to adjust the amount of cold air to become, for example, steel, medium, weak.

In the present embodiment as described above, it can be seen that the refrigerating chamber cooling passage is formed between the grill pan 12 and the shroud 10, the grill pan 12 and the shroud 10 is actually plate-like It can be seen that the absence. Therefore, it can be seen that the cold air amount adjusting device according to the present invention can be implemented at any position inside the refrigerator if the cold air passage having a predetermined width is provided between the pair of plate members.

Next, another embodiment of the present invention will be described with reference to FIGS. 5 and 6. This embodiment shows an embodiment configured to open and close the cold air passage while the opening and closing plate communicating with the rotation control knob reciprocating.

As shown, the grill opening 12 according to the present embodiment is formed with a circular opening 12h in which the handle 52 of the adjustment knob 50 is rotatably projected forward. And the rear end of the handle 52 of the adjustment knob 50 is formed a body portion 54 having a step, the rear surface of the body portion 54 is provided with a screw hole 55, the inner peripheral surface is screwed have.

Plate-shaped upper and lower guides 46 and 47 are formed on the rear surface of the circular opening 12h of the grill pan 12, and cold air passing holes 16a and 47a are formed at inner ends of the upper and lower guides 46 and 47. Is molded. The upper and lower guides 46 and 47 block the gap between the grill pan 12 and the shroud 10, as shown in FIG. 6, and thus only the cold air passes through the cold air passing holes 46a and 47a. Is to pass through.

In the screw hole 55 formed on the rear surface of the body portion 54 of the adjustment knob 50, an opening and closing block 64 having a screw protrusion 62, the outer periphery of which is threaded is screwed. The opening and closing block 64 has a rectangular shape, and upper and lower ends thereof are guided so as not to rotate by the upper and lower guides 46 and 47. That is, the opening and closing block 60 is formed by forming each of the upper and lower guides 46 and 47 into a planar state in which at least a portion thereof is formed in a planar state and corresponding portions of the upper and lower surfaces of the opening and closing block 60 are in close contact with each other. ) Is prevented from rotating and can be linearly reciprocated.

Therefore, referring to FIG. 6, when the handle 52 of the adjustment knob 50 is rotated, the opening and closing block 64 can be rotated by the upper and lower end surfaces of the adjustment block 50 by the upper and lower guides 46 and 47. Therefore, it moves forward or backward by the engagement relationship with the screw projection 62 screwed to the screw hole 55 of the adjustment knob 50. That is, due to the rotation of the adjustment knob 50, since the opening and closing block 60 screwed with the adjustment knob 50 is not rotated, a linear reciprocating motion is performed back and forth.

The linear reciprocating motion of the opening / closing block 60 allows opening and closing the cold air passing holes 46a and 47a formed in the upper and lower guides 46 and 47, thereby allowing the cold air to pass through the cold air passing holes 46a and 47a. You can adjust the amount of. Of course, the amount of movement of the opening / closing block 60 with respect to the rotation of the adjustment knob 50 is the form of the lead and the screw of the thread formed in the screw hole 55 and the screw protrusion 62 (for example, one-line screw or two-line screw) Will be determined by

Therefore, according to the present embodiment, it is possible to precisely control the opening and closing degree of the cold air passing holes 46a and 47a by the opening and closing block 60 by adjusting the rotation degree of the adjustment knob 50.

As described above, according to the first embodiment of the present invention, by rotating the control knob, a cold air through hole formed in the radial direction in the control knob and the cold air through hole formed in the circular rib 30 (32) In proportion to the number of coincidences), it is possible to precisely control the cold air. And according to this embodiment, since the adjustment knob can be assembled by simply inserting from the rear of the grill pan, a partial deformation of the parts does not occur as in the prior art, problems caused by leakage of cold air and detachment of parts. This will not happen.

And according to the second embodiment of the invention, it is possible to accurately control the opening and closing degree of the cold air passage through the opening and closing block for linear reciprocating motion by the rotation of the adjustment knob. In addition, the present embodiment also has the advantage that there is no possibility of deformation of the parts due to the assembling process, and the reliability of the product can be improved.

In the above embodiment according to the present invention has been described through the implementation in the refrigerator compartment cold air passage formed by the grill pan and shroud. However, practically, the present invention is not limited to such a thing, and of course, it can be applied to any cold passage through which cold air passes in a predetermined refrigerator.

For example, it is possible to apply the present invention to the two plate-like members through which the cold air passes through a predetermined space at regular intervals therebetween.

Claims (7)

A predetermined cold air passage formed in the refrigerator, a circular rib formed on the cold air passage and formed with a plurality of cold air passage holes formed on a circumferential surface thereof, and rotatably inserted between the circular ribs, And a control knob having a ball, wherein the cold air amount adjusting device of the refrigerator is configured to allow the cold air to pass through a portion where the cold air passing hole of the adjusting knob and the cold air passing hole of the circular rib communicate with each other by the rotation of the adjusting knob. The apparatus of claim 1, wherein the cold air passage is formed between the grill pan and the shroud behind the freezer compartment. The apparatus of claim 2, wherein the adjustment knob is installed to protrude from a circular opening formed in the grill pan, and the protruding portion is shaped to have a step with a small diameter, thereby preventing separation of the refrigerator. . Predetermined cold air passages formed inside the refrigerator, upper and lower guides formed at upper and lower portions of the cold air passages, and formed with cold air passages at corresponding positions, control knobs rotatably installed in the cold air passages, and cold air of the upper and lower guides; And an opening / closing block for controlling opening and closing of the passage hole, and converting means for converting a rotational movement of the adjusting knob into a linear movement of the opening / closing block. The method of claim 4, wherein the conversion means, the flat portion formed on at least a portion of each of the upper and lower guides, the upper and lower plane portion formed on at least a portion of the opening and closing block guided to the planar portion, and one side of the opening and closing block And a screw protrusion having a molded outer circumference screwed therein, and a screw hole of an adjusting knob engaged with the screw protrusion. The apparatus of claim 4 or 6, wherein the cold air passage is formed between the grill pan and the shroud behind the freezer compartment. The apparatus of claim 6, wherein the adjustment knob is installed in a state of protruding from a circular opening formed in the grill pan, and the protruding portion is formed with a step having a small diameter, thereby preventing separation of the refrigerator. .