KR200236940Y1 - Vegetable room chiller supply structure of refrigerator - Google Patents

Abstract

The present invention discloses an improved vegetable compartment cold air supply structure of a refrigerator. The present invention effectively prevents the freezing of the vegetable compartment to maintain the freshness of the stored vegetables to the maximum. To this end, the present invention, in the vegetable room cold air supply structure of the refrigerator for supplying cold air to the vegetable compartment provided in the refrigerating chamber through a duct for communicating with the cold air of the cabinet to discharge the cold air cooled by the cooler into the refrigerating compartment of the cabinet, A heater for heating the cold air supplied to the vegetable compartment on the cold air flow path to a predetermined temperature is provided. Accordingly, the present invention, since the cold air supplied to the vegetable chamber is supplied at a predetermined temperature so as not to cause the freezing of the moisture, the freezing of the moisture contained in the conventional vegetable chamber air during heat exchange with the vegetable chamber air is effectively prevented. The freshness of the stored vegetables can be maintained at the highest level.

Description

Cold room supply structure of vegetable room of refrigerator

The present invention relates to a refrigerator, and more particularly, to a structure for supplying cold air to a vegetable case.

As is well known, a refrigerator used to freeze and / or refrigerate food by the heat of evaporation of a refrigerant using a cooling cycle is, for example, a cooler as shown in FIG. 4) is installed at the rear side of the freezer compartment 2 of the cabinet (cabinet: 1) to perform the cooling operation by circulating the cooled cold air to the cavity by the fan motor (5). That is, the cold air to the freezer compartment 2 is directly discharged to the freezer compartment 2 through a louver (6) at the rear thereof, and the cold air to the freezer compartment 3 is a cold air formed by an insulator (not shown). By passing through) through the duct (duct: 7) installed in the refrigerating chamber (3) is discharged to each section of the refrigerating chamber (3) to perform the refrigerating action.

The recovered cold air circulated through the freezer compartment 2 and the refrigerating compartment 3 is recovered to the cooler 4 through a return duct 8 provided between the freezer compartment 2 and the refrigerating compartment 3.

On the other hand, the cold air circulated in this way is cooled by heat exchange with the stored food, which also takes away moisture contained in the food. For this reason, especially in the case of vegetables, the freshness is easily lowered and the original quality is lost. In the lower part of the refrigerating chamber 3, the vegetable chamber 11 for keeping the vegetables in a fresh state is generally provided separately. The remaining signs 9 and 10 are doors for opening and closing the freezing compartment 2 and the refrigerating compartment 3, respectively.

FIG. 2 schematically shows a conventional structure for supplying cold air to the vegetable chamber 11, which is discharged to the lower end of the duct 7 provided at the two corners of the refrigerating chamber 3. It is made to cool indirectly by sprinkling around the vegetable chamber 11.

Accordingly, cold cold air meets the warm air of the vegetable compartment 11 to mutually heat-exchange, thereby cooling the vegetable compartment 11. At this time, the vegetable compartment 11 is very humid, so that the moisture contained in the air is easily changed by the instantaneous temperature difference between the two. It will freeze. As a result, the humidity of the vegetable chamber 11 is reduced, so that the freshness of the stored vegetables cannot be sufficiently maintained.

It is an object of the present invention to provide a vegetable room cold air supply structure of a refrigerator capable of effectively maintaining the freshness of stored vegetables by effectively preventing freezing of the vegetable room in view of the conventional problems as described above.

1 is a cross-sectional view schematically showing a typical refrigerator.

2 is a front view schematically showing a cold air supply structure for a conventional vegetable chamber.

Figure 3 is a front view schematically showing a vegetable room temperature control structure according to the present invention.

4 is an enlarged cross-sectional view taken from the IV of FIG.

5 is a cross-sectional view taken along the line V-V of FIG.

6 is a circuit diagram for controlling a heater and a cooling fan used in the present invention.

* Explanation of symbols for main parts of the drawings

1: cabinet 2: freezer (in cabinet)

3: refrigerating chamber (in cabinet) 4: evaporator

5: fan motor 7: duct (of refrigerating chamber)

7a: cold duct (of duct) 7b: refractory (of duct)

11: vegetable case (vegetable case) 12: (vegetable room) cover

12a: cold air inlet (cover) 13: (duct) heater

14: Al tape

In order to achieve the above object, the present invention provides a cooler (4) for generating cold air, a cooling fan (5) for blowing the cold air according to the temperature of the refrigerating chamber (3), and the cold air being discharged to the refrigerating chamber. In the vegetable compartment cold air supply structure of the refrigerator which supplies a part to the vegetable compartment 11 partitioned in the refrigerating compartment, the vegetable compartment 11 is provided on the cold air passage 7a leading to the vegetable compartment 11 in the duct 7. Heater 13 for heating the cold air supplied to the), and means for operating the heater 13 in conjunction with the cooling fan (5) so that the heated cold air is maintained at a constant temperature.

Accordingly, the present invention, since the cold air supplied to the vegetable chamber is heated to a predetermined temperature such that the freezing of the moisture does not cause the freezing of the water, the freezing of moisture contained in the conventional vegetable chamber air during heat exchange with the vegetable chamber air is effectively prevented. In addition, the refrigerator has a great effect on improving the quality and reliability of the refrigerator.

Such specific features and other advantages of the present invention will become more apparent from the following description of the preferred embodiments with reference to the accompanying drawings.

1 and 3 to 5, the illustrated configuration is an intercooled refrigerator, in which a cooler 4 is installed on the rear side of the freezer compartment 2 of the cabinet 1 to thereby cool the cooled air. It is configured to perform the cooling operation by circulating into the cavity by the fan motor 5. That is, the cold air to the freezer compartment 2 is directly discharged to the freezer compartment 2 through the louver 6 on the rear side thereof, and the cold air to the freezer compartment 3 is cooled to the cold side of the cabinet 1 formed by an insulator ( (Not shown) is discharged to each part of the refrigerating chamber 3 through the duct 7 installed at the two corners of the refrigerating chamber 3 to perform the refrigerating action.

The recovery chiller after circulating the freezer compartment 2 and the refrigerating compartment 3 is recovered to the cooler 4 again through a return duct 8 provided therebetween and circulated as described above.

Meanwhile, among the foods stored in the refrigerator, vegetables and the like are desperately required to be kept fresh in a fresh state. Usually, a lower portion of the refrigerating compartment 3 is provided with a vegetable compartment 11 mainly for storing only vegetables. The vegetable chamber 11 is also supplied with cold air through the duct 7 provided in the refrigerating chamber 3.

However, the cold air supplied to the refrigerating chamber 3 through the duct 7 is relatively cool, although it is raised to some extent by the cold air of the cabinet 1 and the heat loss during the duct 7. On the other hand, since the air in the vegetable chamber 11 is hot and humid, moisture contained in the air of the vegetable chamber 11 is frozen due to the instantaneous large temperature difference during heat exchange between the two, thereby reducing the freshness of the stored vegetables.

Accordingly, a heater 13 for heating the cold air supplied to the vegetable chamber 11 to a predetermined temperature such that freezing of moisture does not occur on the cold air passage 7a of the refrigerating chamber 3 of the duct 7 is provided. In this case, the heater 13 is preferably a cord heater.

However, when the heater 13 is installed in the upper portion of the duct 7, the temperature of the cold air discharged to the refrigerating chamber 3 is too high, which may damage the storage state of the food stored therein. ) Is preferably installed at the lower end of the duct 7 past the discharge position of the cold air supplied to the refrigerating chamber 3 so as to prevent the temperature rising of the cold air discharged to the refrigerating chamber 3 to the maximum.

In addition, the cover 12 of the vegetable chamber 11 is provided with a cold air inlet 12a which is in close contact with and communicates with the lower end of the cold air passage 7a of the duct 7, so that cold air is introduced directly into the vegetable chamber 11. This is because, when spraying cold air around the vegetable chamber 11 as in the prior art, there is a fear that the temperature of the refrigerating chamber 3 rises.

The heater 13 of the present invention may be installed on the cold air flow path 7a of the duct 7 in various ways. For example, an aluminum tape having excellent thermal conductivity as shown for excellent heat exchange with cold air ( It can be attached and fixed on the cold air flow path 7a by Al tape 14).

On the other hand, since the cold air is supplied to the duct 7 by the fan motor 5 installed on the rear side of the freezing chamber 2, the cold air has a constant flow rate, and thus there is a possibility that the temperature rises to a predetermined temperature while passing through the heater 13. Accordingly, the present invention has a refracting portion 7b formed in the cold air flow passage 7a of the duct 7, preferably in the cold air flow passage 7a at the position just before the cold air enters the heater 13, thereby providing the heater 13. By appropriately reducing the flow rate of the incoming cold air, sufficient heat exchange with the heater 13 can be achieved. At this time, the temperature of the cold air heated while passing through the heater 13 is preferably set to about 2 ℃ to maintain the freshness of the vegetable.

The heater 13 of the present invention is preferably controlled in conjunction with the fan motor using a conventional fan motor control circuit as shown in FIG. That is, the heater 13 is connected to the fan motor 5 in parallel, and according to the temperature of the refrigerating compartment 3 detected by the refrigerating compartment temperature detecting unit 14, through the control unit 15 and the fan motor driving unit 16. When the fan motor 5 is driven, the heaters 13 are operated together, and when the fan motor 5 is stopped, the operation is stopped.

Accordingly, when the fan motor 5 is operated by the refrigerating chamber sensor, the heater 13 is operated in conjunction with this to heat the cold air supplied to the vegetable chamber 11 to a predetermined temperature, and when the fan motor 5 is stopped, the heater By stopping (13) also, the cold air supplied to the vegetable chamber 11 can be maintained at substantially constant temperature.

As described above, according to the present invention, since the cold air supplied to the vegetable compartment is heated and supplied to a predetermined temperature at which a freezing does not occur, the moisture contained in the vegetable compartment air is effectively frozen when exchanging with the vegetable compartment air. It can be prevented. Accordingly, the humidity of the vegetable room is maintained to the maximum, so that the freshness of the stored vegetables can be maintained at the best.

Therefore, the present invention has a very excellent effect that can greatly improve the reliability and quality of the refrigerator.

Claims (1)

The cooler 4 which produces cold air, the cooling fan 5 which blows the cold air according to the temperature of the refrigerating chamber 3, and the vegetable chamber 11 which partitioned a part of the cold air in the refrigerator compartment while discharging the blown cold air to the refrigerator compartment. In the vegetable chamber cold air supply structure of the refrigerator to be supplied to the refrigerator, a heater for heating the cold air supplied to the vegetable chamber 11 provided on the cold air passage 7a leading to the vegetable chamber 11 in the duct 7 13) and means for operating the heater (13) in conjunction with the cooling fan (5) so that the cooled cold air is maintained at a constant temperature.