KR20010076101A - Refrigerator - Google Patents

Abstract

PURPOSE: A refrigerator is provided to achieve an improved operating efficiency of refrigerator by effectively removing the frost formed at the refrigerating compartment cooling air conveying duct and the refrigerating compartment cooling air return duct. CONSTITUTION: A refrigerant comprises a main body having a refrigerant compartment and a freezing compartment(20) which are sectioned by a barrier; an evaporator(23) arranged at in the rear portion of the freezing compartment; a refrigerating compartment cooling air conveying duct(50) for conveying the cooling air generated from the evaporator to the refrigerating compartment; a refrigerating compartment cooling air return duct(40) for returning the cooling air circulated through the refrigerating compartment to the evaporator; and heaters(51,41) arranged at the cooling air inlet area(B) of the refrigerating compartment cooling air conveying duct and the cooling air outlet area(C) of the refrigerating compartment cooling air return duct, wherein heaters are taken up along the outer wall periphery of both ducts, respectively.

Description

Refrigerator {REFRIGERATOR}

The present invention relates to a refrigerator. More particularly, the present invention relates to a refrigerator capable of removing frost generated in a refrigerator compartment cold air duct and a refrigerator compartment cold return duct.

In general, a refrigerator includes a main body in which a freezing compartment and a refrigerating compartment, which are divided by an intermediate partition, are formed, and a refrigerating chamber door and a freezing chamber door which are installed in front of the main body to rotate the front openings of the freezing compartment and the refrigerating compartment, respectively. The refrigerator also has a cooling system consisting of a compressor, a condenser and an evaporator to supply cold air to the freezer compartment and the refrigerating compartment. The compressor receives power from an external power source to compress the refrigerant, and the refrigerant compressed in the compressor is condensed in the condenser, and the evaporator generates cold air by evaporating the refrigerant condensed in the condenser. The cold air generated in the evaporator is supplied to the freezer compartment and the refrigerating compartment by a blowing fan.

On the other hand, since the cold air generated in the evaporator is lower than 0 ° C, water vapor contained in the air around the evaporator condenses on the surface of the evaporator to form frost, so that the defrost heater provided under the evaporator heats the evaporator while the compressor is stopped. To remove the frost. In addition, a drain plate for receiving the defrost water generated during defrost is formed under the defrost heater.

4 is an enlarged cross-sectional view of a conventional refrigerator main part. As shown in this figure, the freezer compartment 120 is partitioned by a plurality of shelves 121 for storing and storing the stored goods. The freezing chamber duct member 130 is provided in the rear region of the freezing chamber 120 so that a predetermined space is formed from the rear wall 129 of the freezing chamber 120 in the vertical direction. The freezing chamber duct member 130 is disposed to have a predetermined distance from the rear wall 129 of the freezing chamber 120 at a predetermined distance from the rear wall 129 and a predetermined space from the duct rear plate 133. The duct face plate 131 has a plurality of cold air discharge ports 137 formed therethrough. The duct front plate 131 and the duct back plate 133 of the freezing chamber duct member 130 form a cold air flow path 135 for guiding cold air from the evaporator 123 to be described later. An evaporator 123 is provided in the bottom lower region of the duct back plate 133 to generate cold air by evaporating the refrigerant condensed in the condenser (not shown). An upper portion of the evaporator 123 is provided with a blowing fan 125 for supplying the cold air generated by the evaporator 123 to the freezing chamber 120 and the refrigerating chamber (not shown). In the lower region of the evaporator 123, a freezer compartment cold air return duct 127 is formed to guide the cold air circulated through the freezer compartment 120 to the evaporator 123 using the duct rear plate 133 as an interface.

In addition, in the rear region of the rear wall 129 of the refrigerating chamber and the freezing chamber 120, the refrigerating chamber cold air return duct 140 for guiding the cold air circulating in the refrigerating chamber to the evaporator 123, and the cold air generated in the evaporator 123 to the refrigerating chamber. The refrigerating chamber cold air delivery duct 150 is provided. The damper member 153 is provided in the cold air inlet area B of the refrigerator compartment cold air delivery duct 150 to adjust the amount of cold air supplied to the refrigerator compartment according to the temperature of the refrigerator compartment.

By such a configuration, after the cold air generated in the evaporator 123 is blown into the cold air flow path 135 formed in the freezing chamber duct member 130 by the blower fan 125, some cold air is ducted in the freezer chamber duct member 130. After the cold air outlet 137 formed in the front plate 131 is guided into the freezer compartment 120, another part of the cold air is guided into the refrigerating compartment by the refrigerating compartment cold air delivery duct 150, respectively, after circulating the inside of the refrigerator, The cold air of the freezing chamber 120 is returned to the evaporator 123 by the freezing compartment cold air return duct 127, and the cold air of the refrigerating compartment is repeatedly returned to the evaporator 123 by the cold compartment cold air return duct 140. do.

However, in the conventional refrigerator, the air in the freezer compartment 120 when the blower fan 125 stops is relatively cooler than the air in the refrigerating compartment cold air delivery duct 150 than the temperature of the air in the freezer compartment 120. In the cold air inlet region (B), the dew condensation occurs in the cold air inlet region (B) of the damper member (153) and the cold compartment air delivery duct 150 due to the temperature difference. It develops into sexuality.

As described above, if the frost is not removed and continues to accumulate in the cold air inlet area B of the refrigerator compartment cold air delivery duct 150, the flow path of the cold air is blocked and the cold air is not smoothly delivered to the refrigerator compartment. As a result, the freshness of the stored food is reduced and the food is deteriorated.

In addition, during operation of the blower fan 125, the air is circulated in the refrigerating chamber and the air having a high temperature and high humidity is guided to the evaporator 123 by the refrigerating chamber cold air return duct 140, so that the air meets the air of the freezing chamber 120 having a relatively low temperature. Therefore, frost is also generated in the cold air outlet region C of the refrigerating compartment cold air return duct 140.

If the frost is not removed and accumulated in the cold air outlet region C of the refrigerating chamber cold air return duct 140, since the refrigerating chamber cold air does not return smoothly to the evaporator 123, as the temperature of the refrigerating compartment becomes excessively low, it is stored in the refrigerating compartment. One food may be frozen and lose the function of the refrigerating compartment. In addition, since the evaporator 123 needs high energy for cold air generation, power consumption increases. This will reduce the efficiency of the refrigerator.

Accordingly, an object of the present invention is to provide a refrigerator capable of removing frost generated in the refrigerating chamber cold air duct and the refrigerating chamber cold air return duct.

1 is a side cross-sectional view of a refrigerator according to a first embodiment of the present invention;

2 is an enlarged view of a portion A of FIG. 1;

3 is an enlarged cross-sectional view of a main part according to a second exemplary embodiment of the present invention;

4 is an enlarged cross-sectional view of a conventional refrigerator main part.

* Explanation of symbols for the main parts of the drawings

1: body 10: refrigerator

15: cold air distribution member 20: freezer

23: evaporator 25: blower fan

30: freezing chamber duct member 40: refrigerating chamber cold air return duct

41, 51: heating heater 50: cold air delivery duct in the refrigerating chamber

53: damper member 61: heat transfer member

The object is, according to one aspect of the invention, the main compartment partitioned by the intermediate partition into the refrigerator compartment and the freezer compartment, an evaporator provided in the rear of the freezer compartment to generate cold air, and a refrigerator compartment for guiding the cold air generated in the evaporator to the cold compartment A refrigerator having a cold air duct and a refrigerating compartment cold air return duct for guiding the cold air circulating in the refrigerating compartment to the evaporator, wherein the refrigerator is provided in a cold air outlet region of the refrigerating compartment cold air return duct to remove frost generated in the refrigerating compartment cold air return duct. It is achieved by a refrigerator comprising a first defrost member.

Here, the first defrost member is a heating heater disposed in the form of a winding in the cold air outlet region of the refrigerating compartment cold air return duct, whereby the heating heater is in close contact with the cold air outlet region of the refrigerating compartment cold air return duct, evenly distributed to the frost formed portion The heat transfer allows the frost to be completely removed.

The apparatus may further include a heat transfer tape provided in the cold air outlet area to transfer heat from the heating heater to the cold air outlet area to increase the thermal conductivity of the heat transfer tape to transfer the heat of the heating heater to the cold air outlet area. It can be effective for removal.

The apparatus may further include a defrost heater for evaporator provided under the evaporator to remove frost generated from the evaporator, wherein the first defrost member is provided in a cold air outlet region of the refrigerating chamber cold air return duct. A heat transfer member for transferring to the cold air outlet region of the refrigerating compartment cold air return duct, wherein the heat transfer member is a metal tape attached to the outer wall of the cold air recirculation duct cold exit region of the refrigerating compartment, the heat of the defrost heater into the cold air return duct. It has high heat conductivity, which is effective for removing frost.

The second defrosting member provided in the cold air inlet region of the refrigerating compartment cold air delivery duct to remove frost generated in the cold compartment air delivery duct is a heating heater disposed in a winding form in the cold air inlet region of the refrigerating compartment cold air delivery duct. Since it can be in close contact with the cold air inlet area of the delivery duct, it is very effective in transferring heat to remove frost.

According to another aspect of the present invention, the object is divided into a refrigerator compartment and a freezer compartment by an intermediate partition, an evaporator provided at the rear of the freezer compartment to generate cold air, and a refrigerating compartment for guiding the cold air generated by the evaporator to the refrigerating compartment. A refrigerator having a cold air duct and a refrigerating compartment cold air return duct for guiding the cold air circulated in the refrigerating compartment to the freezing compartment, the refrigerator being provided at a cold air inlet area of the cold compartment cold air duct to remove frost generated in the cold compartment cold air duct. It is achieved by a refrigerator comprising a defrost member.

Here, the defrost member is a heating heater disposed in the cold air inlet region of the refrigerating compartment cold air duct in a winding form, it is easy to install the heating heater, the heating heater is in close contact with the cold air inlet region of the refrigerating compartment cold air delivery duct. It is effective in transferring heat to remove frost.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a side cross-sectional view of a refrigerator according to a first embodiment of the present invention, Figure 2 is an enlarged view of a portion A of FIG. As shown in these figures, the refrigerator includes a main body 1 in which the refrigerating chamber 10 and the freezing chamber 20 are mutually partitioned by the intermediate partition 7, and the refrigerator 1 is installed in front of the main body 1 10) and a refrigerating chamber door 3 and a freezing chamber door 5 which rotate and open the front opening of the freezing chamber 20, respectively.

The freezer compartment 20 is partitioned by a plurality of shelves 21 for storing and storing the stored product. The freezing chamber duct member 30 is provided in the rear region of the freezing chamber 20 so that a predetermined space is formed from the rear wall 29 of the freezing chamber 20 in the vertical direction. The freezing chamber duct member 30 is disposed to have a predetermined distance from the rear wall 29 of the freezing chamber 20 and a predetermined space from the rear side of the duct rear plate 33 and the duct rear plate 33. The duct face plate 31 has a plurality of cold air discharge ports 37 formed therethrough. The duct front plate 31 and the duct back plate 33 of the freezing chamber duct member 30 form a cold air flow passage 35 for guiding the cold air from the evaporator 23 to be described later. An evaporator 23 is provided in the bottom lower region of the duct back plate 33 to evaporate the refrigerant condensed in the condenser (not shown) to generate cold air. In the upper part of the evaporator 23, a blowing fan 25 for supplying cold air generated in the evaporator 23 to the freezing chamber 20 and the refrigerating chamber 10 is provided. In the lower region of the evaporator 23, a freezer compartment cold air return duct 27 is formed to guide the cold air circulated through the freezer compartment 20 to the evaporator 23 with the duct back plate 33 as an interface.

The refrigerating compartment 10 is partitioned by the shelf 11 to store and store the stored goods, and the vegetable storage compartment 13 for storing vegetables and fruits is provided in the lower region of the refrigerating compartment 10. The cold air distribution member 15 is provided in the rear region of the refrigerating chamber 10 so that a predetermined space is formed from the rear wall 19 of the refrigerating chamber 10 along the vertical direction. The cold air distribution member 15 is disposed with a predetermined spaced space toward the front side from the rear wall 19 of the refrigerating chamber 10 and has a cold air distribution plate 18 having a plurality of cold air discharge openings 17 formed therethrough. The cold air distribution plate 18 of the cold air distribution member 15 forms a cold air passage 16 that guides the cold air from the evaporator 23 to the refrigerating chamber 10.

In the rear wall 19 of the refrigerating chamber 10 and the rear wall 29 of the refrigerating chamber 20, a refrigerating chamber cold air return duct 40 for guiding the cold air circulated in the refrigerating chamber 10 to the evaporator 23 is provided. The refrigerator compartment cold air delivery duct 50 which guides the cold air produced | generated by the evaporator 23 to the refrigerator compartment 10 is provided. In the cold air inlet region B of the refrigerating compartment cold air delivery duct 50, a damper member 53 for adjusting the amount of cold air supplied to the refrigerating compartment 10 according to the temperature is provided.

Meanwhile, heating heaters 51 and 41 are provided on the outer walls of the cold air inlet area B of the refrigerating compartment cold air duct 50 and the cold air outlet region C of the refrigerating compartment cold air duct 40, respectively. 51 and 41 are arranged in the form of a winding so as to be in close contact with the respective duct outer walls along the circumferential directions of the refrigerating chamber cold air delivery duct 50 and the refrigerating chamber cold air return duct 40.

By such a configuration, after the cool air generated in the evaporator 23 is blown into the cold air passage 35 formed in the freezing chamber duct member 30 by the blowing fan 25, some cold air is ducted in the freezer chamber duct member 30. The cold air outlet 37 formed in the front plate 31 is guided into the freezing chamber 20, and another part of the cold air is guided to the cold air flow path 16 by the cold room cold air delivery duct 50, thereby providing a cold air distribution member ( 15 is discharged into the refrigerating chamber 10 through the cold air discharge port 17 formed in the cold air distribution plate 18.

After the cold air discharged into the refrigerating chamber 10 and the freezing chamber 20 circulates inside the refrigerator, the cold air of the freezing chamber 20 is returned to the evaporator 23 by the freezing chamber cold air return duct 27, and the cold air of the refrigerating chamber 10. Is repeated by the refrigerating chamber cold air return duct 40 to return to the evaporator (23).

At this time, the heating heaters 51 and 41 generate heat by supplying power to transfer heat into the cold air inlet area B of the refrigerating compartment cold air duct 50 and the cold air outlet area C of the refrigerating compartment cold air return duct 40. Therefore, frost generated in the cold air inlet region B of the refrigerating compartment cold air delivery duct 50 and the cold air outlet region C of the refrigerating compartment cold air return duct 40 is removed. In this case, although not shown in the drawing, the heating heaters 51 and 41 are installed after attaching the heat transfer tape, or the heating heaters 51 and 41 are installed in the form of windings, and then the heating heaters 51 and 41 are installed. The effect of the present invention can also be obtained by attaching the heat transfer tape so as to surround it.

As described above, when the frost is removed, when the cold air return duct 40 and the cold storage air duct 50 of the refrigerating compartment are blocked due to the frost, the cold air of the refrigerating compartment 10 is not transferred to the evaporator 23. It is not possible to return to an excessively lower than the temperature of the general refrigerating compartment 10, or to prevent the cold air is not sent to the refrigerating compartment 10 excessively higher than the temperature of the general freezer compartment 20 to prevent the function of the refrigerating compartment (10) It has the effect of doing it perfectly.

Figure 3 is an enlarged cross-sectional view of the main part according to the second embodiment of the present invention. As shown in this figure, the heat transfer member 61 may be attached to the portion close to the defrost heater 24 in the outer wall of the refrigerating chamber cold air return duct 40 cold air outlet region (C).

The heat transfer member 61 is installed to effectively receive the heat generated from the defrost heater 24 when the frost generated in the evaporator 23 is removed, and the heat transfer member 61 which receives the heat is the cold room return air duct 40. Defrost that occurs in the cold air outlet region (C) of) is removed.

The heat transfer member 61 is preferably formed of a metal tape, and a conductor having good thermal conductivity may be attached to the metal tape.

Thus, by providing a defrost member in the cold air inlet area B of the refrigerating compartment cold air delivery duct 50 and the cold air outlet area C of the refrigerating compartment cold air return duct 40, the refrigerating compartment cold air delivery duct 50 and the refrigerating compartment cold air return. Defrost generated in the duct 40 can be removed.

In the first embodiment described above, the heating heaters 51 and 41 are installed in both the refrigerating compartment cold air delivery duct 50 and the refrigerating compartment cold air return duct 40, but in some cases, the refrigerating compartment cold air delivery duct 50 and The heating heaters 51 and 41 may be separately installed in each of the refrigerating chamber cold air return ducts 40. At this time, the heat transfer tapes may be simultaneously installed in the heating heaters 51 and 41.

As described above, according to the present invention, the frost generated in the refrigerating chamber cold air duct and the refrigerating chamber cold air return duct can be removed.

Claims (9)

A main body divided into a refrigerating compartment and a freezing compartment by an intermediate partition, an evaporator provided at the rear of the freezing compartment to generate cold air, a refrigerating compartment cold air duct for guiding the cold air generated in the evaporator to the refrigerating compartment, and a cold air circulated through the refrigerating compartment. In the refrigerator having a refrigerator compartment cold air return duct guided to the evaporator, And a first defrost member provided in the cold air outlet region of the refrigerating compartment cold return duct to remove frost generated in the refrigerating compartment cold return duct. The method of claim 1, And the first defrost member is a heating heater disposed in a winding form in a cold air outlet region of the refrigerating chamber cold air return duct. The method of claim 2, And a heat transfer tape provided in the cold air outlet area to transfer heat from the heating heater to the cold air outlet area. The method of claim 1, It further comprises a defrost heater for the evaporator provided under the evaporator to remove frost generated in the evaporator, And the first defrost member is a heat transfer member provided in a cold air outlet region of the refrigerating compartment cold air return duct to transfer heat from the defrost heater to a cold air outlet region of the refrigerating compartment cold air return duct. The method of claim 4, wherein And the heat transfer member is a metal tape attached to an outer wall of the refrigerating compartment cold air return duct cold air outlet region. The method of claim 1, And a second defrost member provided at a cold air inlet region of the refrigerating compartment cold air duct to remove frost generated in the refrigerating compartment cold air duct. The method of claim 6, And the second defrosting member is a heating heater disposed in a winding form in a cold air inlet region of the cold storage room duct. A main body divided into a refrigerating compartment and a freezing compartment by an intermediate partition, an evaporator provided at the rear of the freezing compartment to generate cold air, a refrigerating compartment cold air duct for guiding cold air generated by the evaporator to the refrigerating compartment, and cold air circulated through the refrigerating compartment. In the refrigerator having a refrigerating compartment cold air return duct leading to the freezing chamber, And a defrost member provided at a cold air inlet region of the refrigerating compartment cold air duct to remove frost generated in the refrigerating compartment cold air duct. The method of claim 8, The defrost member is a refrigerator, characterized in that the heating heater disposed in the form of a winding in the cold air inlet region of the cold air chamber delivery duct.