KR19980028102A - Refrigeration air supply structure - Google Patents

Abstract

The present invention relates to a structure of a cold air supply duct and a shelf duct for circulation of cold air including a supply structure of cold air supplied to a refrigerating compartment.

The cold air supply structure according to the present invention includes a pair of cold air supply ducts provided in the rear corners of the refrigerating chamber, each of which has a plurality of supply holes for supplying cold air, and a duct installed in the cold air supply duct and communicating with the supply holes. And a plurality of cold air discharge holes formed and provided to discharge cold air supplied into the refrigerating chamber. And an intake duct is installed in the center part of the said supply duct in the back of a refrigerating chamber, and takes in the heat exchanged high temperature air. The cold air supplied from the cold air supply duct to the shelf duct is mainly supplied to both sides of the shelf duct, thereby supplying sufficient cold air without weakening the blowing force.

Description

Refrigeration air supply structure

1 is a cross-sectional view showing a cold air supply structure of the entire refrigerator

Figure 2 is a perspective view showing the configuration of the duct for cold air supply and circulation of the refrigerating chamber

3 is a plan view of a duct shelf with cold air supply ducts;

Figure 4 is a perspective view showing a cold air supply structure of the refrigerating compartment according to the present invention

5 is a plan view of the duct shelf according to the present invention

Figure 6 is a partial perspective view showing the connection structure of the shelf duct and the supply duct of the present invention

* Explanation of symbols for the main parts of the drawings

20: cold air supply duct 22: supply hole

24: cold air suction duct 26: suction hole

30: shelf duct 32: duct

The present invention relates to a cold air supply structure of the refrigerator, and more particularly, to the cold air supply duct and the suction duct in the refrigerating chamber spaced apart, the cold air of the supply duct is configured to be supplied to the inside through the duct attached to the shelf It relates to the supply structure of.

First, the conventional cold air supply and circulation structure will be described with reference to FIGS. 1 to 3. Part of the cold air heat-exchanged with the evaporator 1 through which the liquid refrigerant passes through the freezing cycle built into the refrigerator is supplied to the freezer compartment by the blowing fan 2, and the other part is via the multi-duct 3 through the barrier. Is supplied.

The multi duct 3 is mounted at the center of the rear side of the refrigerating chamber, and the supply duct 5 and the suction duct 7 are integrally formed for supplying cold air and suction of air circulated in the refrigerating chamber. As shown in Fig. 2, the supply duct 5 is formed in the central portion in the longitudinal direction, and cold air supplied through the supply duct 5 is circulated and stored in both sides of the supply duct 5. The suction duct 7 suctioned again after heat exchange with water is molded together. And the duct cover 9 is attached to the front of the multi duct (3). The duct cover 9 has a cold air supply hole 7a capable of discharging cold air supplied from the supply duct 7 and a suction hole 9a through which a relatively high temperature air is sucked through the inside of the refrigerating chamber. Plural pieces are molded.

The shelf duct 10 provided with the duct 10a along the edge part is inserted into the said supply hole 7a. Therefore, the cold air which exited the said supply hole 7a advances to the front side along the duct 10a, and the cold air is supplied to the refrigerating chamber through the cold air discharge hole formed below the duct 10a. The cold air thus supplied circulates inside the refrigerating chamber and becomes relatively hot air through heat exchange with the stored food and the like. This high temperature air is introduced through the inlet 7a of the duct cover 9, and is supplied to the middle stage 1 and heat exchanged again to a low temperature while contacting the evaporator 1, thereby repeating the above-described circulation process. .

However, according to the structure of the conventional multi-duct and cold air circulation structure, the following problems are pointed out.

First, as shown in FIG. 3, the inlet of the cold air shelf duct 10 supplied to the shelf duct 10 is divided into both sides while being bent at 90 degrees and proceeds to the inside of the duct 10a. At this time, since the inflowing cold air is bent by 90 degrees while hitting one side of the inner surface of the duct 10a, the blowing force of the cold air is greatly reduced by the resistance that is hit by one side of the duct 10a. Therefore, the cold air flowing into the shelf duct 10 cannot be smoothly supplied to the front of the refrigerator door side, and a large part of the cold air is supplied to the refrigerating chamber through the cold air discharge holes formed near the inlet of the shelf duct 10. do. In this case, the refrigeration efficiency of the entire refrigerating compartment becomes uneven as a whole, and has a disadvantage of having a partial non-uniform temperature distribution. This is a disadvantage in that the refrigerating efficiency of the refrigerating chamber is substantially lowered and affects the reliability of the product.

In addition, since cold air is discharged near the inlet of the shelf duct 10 and this cold air is substantially adjacent to the suction hole 7a of the multi-duct 3, the cold air cannot be sufficiently circulated into the refrigerating chamber, and the hop-in hole 7a is provided. It is sucked into the hop inlet duct 7. Through this, since the cold air supplied to the refrigerating chamber is sucked without circulating the whole of the refrigerating chamber, it is pointed out as a fatal disadvantage that substantially lowers the efficiency of the refrigerating chamber.

In the conventional multi duct, the suction duct and the supply duct are formed side by side, so that the temperature of the suction duct portion is in the almost same temperature range as the adjacent supply duct. Therefore, since the air circulated and sucked into the suction duct is relatively high temperature, dew condensation occurs when the air is in contact with the suction duct in the low temperature state, and if the duct is frozen, the suction duct is blocked. Due to this problem, eventually the circulated high-temperature air is not sent back to the evaporator, the refrigeration efficiency of the refrigerating compartment is sharply lowered, causing problems in the reliability of the product.

The present invention has been made to solve such a problem, and an object of the present invention is to provide a supply structure of cold air having a circulation structure of cold air.

The cold air supply structure according to the present invention for achieving the above object is provided in the rear corner portion of the refrigerating chamber, and a pair of cold air supply ducts having a plurality of supply holes for supplying cold air, respectively, and mounted in the cold air supply duct And a duct which communicates with the supply hole, and is formed of a shelf duct formed with a plurality of cold air discharge holes for discharging the supplied cold air into the refrigerating chamber. And the supply hole of the supply duct is maintained in a closed state by the opening and closing member, when the shelf duct is mounted, it is configured to communicate with the duct of the shelf duct.

The cold air supplied through the supply duct is circulated through the refrigerating compartment, and then exchanged with the food being stored. The cold air is installed in the central portion of the supply duct at the rear of the refrigerating compartment, and is configured to be sucked into the intake duct to suck in the heat exchanged hot air. .

According to the present invention, the cold air supplied through the supply duct is smoothly supplied to the entire refrigerating chamber through the shelf duct, there is an advantage that the refrigeration efficiency is high, the present invention is further based on the embodiment shown in the drawings It will be described in detail.

As shown in FIG. 4, the cold air supply structure according to the present invention includes a pair of supply ducts 20 installed in the lengthwise direction at the rear corners of the refrigerator, and the cold air supply holes 22 of the supply ducts 20. It is configured to include a shelf duct 30 for transmitting the cold air supplied through the) to the refrigerating chamber.

The pair of supply ducts 20 are provided in the longitudinal direction at the corners of the rear wall of the refrigerator, and cold air heat-exchanged in the evaporator is supplied therein. The supply duct 20 is formed with a plurality of cold air supply holes 22 through which cold air to be supplied is ejected. The cold air supply hole 22 is commonly installed at the same height in a pair of left and right supply ducts, and as described below, when the corresponding portion of the shelf duct 30 is inserted into the supply hole 22, the cold air While moving to the edge of the shelf along the duct 32 of the shelf duct 32, it is supplied into the refrigerating chamber through the cold air discharge hole formed below.

As illustrated in FIG. 6, the cold air supply hole 22 of the supply duct 20 is always kept in a closed state when the shelf duct 30 is not mounted by the opening / closing member 24. That is, the opening and closing member 24 is elastically supported in a state of always blocking the supply hole 22 by elastic means (not shown), such as a torsion spring, and the inlet 36 of the shelf duct 30. When the shelf duct 30 is inserted and is opened, cold air is supplied to the duct 32 of the shelf duct 30.

In the shelf duct 30 according to the present invention, a duct 32 to which cold air is supplied is integrally formed along an edge of a shelf for placing food stored in a refrigerator compartment, and a predetermined distance below the duct 32. Cold air discharge holes 34 for supplying cold air into the refrigerating chamber are molded.

The inlet 36 of the duct 32 is inserted into the shelf duct 30 so that the cold air supply hole 22 of the supply duct 20 is fitted into the supply duct 20 so that the cold air can be supplied. It is molded. That is, when the inlet 36 through which cold air flows into the rear edge of the shelf duct 30 is formed, and the inlet 36 is inserted into the supply hole 22 of the supply duct 20, the supply duct 20 is provided. It is configured to communicate with the cold air flow.

Looking at the flow of cold air in the shelf duct 30, as shown in Figure 5, the cold air is ejected through the supply hole 22 in the pair of supply duct 20 provided in the rear corner of the refrigerator, shelf duct It is connected to the inlet 36 of 30 and flows inside the shelf 32. At this time, the cold air entering the inlet 36 is guided through the inner surface 38 on the inlet side, and the cold air is mainly directed to both sides 32a of the duct 32. The induction direction of such cold air is for avoiding lowering the blowing force of cold air. In the illustrated embodiment, when the supply hole 22 of the supply duct 20 and the inlet 36 of the duct shelf 30 are formed to be further positioned on the side wall of the refrigerator, cold air from the supply hole 22 is formed. It will be possible to guide through the inlet 36 to both sides 32a of the shelf duct 30, almost without colliding with the inner wall of the duct 32.

When the flow of cold air through the shelf duct 30 and the supply duct 20 is arranged, the cold air supplied from the pair of supply ducts 20 installed at the rear edge of the refrigerator is formed on both sides 32a of the shelf duct 30. If possible, it can be said that there is a technical gist of supplying cold air as it is without refracting, so as to reduce the blowing force of cold air.

And the suction duct 24 which concerns on this invention is provided in the center part between the said pair of supply ducts 20 at the back of a refrigerator, The front side sucks cold air which became relatively high temperature while circulating in a refrigerator compartment. A plurality of suction holes 26 are molded. As such, the suction duct 24 maintains the state spaced apart from the supply duct 20 to allow the cold air supplied through the supply duct 20 and the shelf duct 24 to circulate smoothly in the refrigerating compartment. This is to prevent the loss due to the temperature difference between the supply duct 20 and the suction duct 24.

According to the cold air supply structure of the refrigerator according to the present invention configured as described above, the following effects are expected.

Since the cold air flowing into the shelf duct 30 from the supply duct 20 does not have a sudden direction change in the shelf duct, there is an effect of maintaining the blowing force as it is. Therefore, the cold air supplied to the refrigerating compartment while moving in the shelf duct can be evenly transmitted to the entire refrigerating compartment, thereby ensuring the reliability of the refrigerating efficiency. As described above, the pair of supply ducts installed in the longitudinal direction at the rear corners and the connection structure of the supply ducts and the shelf ducts are capable of maintaining a smooth blowing force of the supplied cold air. .

In the case of the shelf duct, since the cold air supplied to the refrigerating compartment is circulated through the refrigerating compartment as a whole, the suction duct is sucked through the suction duct. There is an effect that can achieve efficient cooling by the whole circulation.

Claims (1)

A pair of cold air supply ducts vertically installed at the rear corners of the refrigerating compartment, each of which has a plurality of supply holes for supplying cold air, and a duct connected to the cold air supply ducts to communicate with the supply holes; A cold air supply structure of a refrigerator comprising a shelf duct in which a plurality of cold air discharge holes discharged into a refrigerating chamber are formed. 2. The refrigerator's cold air supply structure according to 1 above, wherein the supply hole of the supply duct is kept closed by an opening and closing member, and the shelf duct is inserted into communication with the duct of the shelf duct. 3. The cold air supply structure according to claim 1 or 2, wherein the inlet of the shelf duct is configured such that cold air flowing into the shelf duct from the supply hole is mainly directed to both sides of the shelf duct. 4. The refrigerator's cold air supply structure according to claim 3, further comprising an intake duct installed at a central portion of the supply duct at a rear side of the refrigerating chamber, for taking in heat exchanged hot air.