Refrigerator

1. A refrigerator, comprising:

a refrigerator main body having a freezing chamber and a chilling chamber in which foods are stored;

a machine room in which a compressor is installed;

a rear path in which cool air generated in an evaporator flows into the freezing chamber and the chilling chamber and flows back to the evaporator;

doors respectively combined with the refrigerator main body and configured to open and close the freezing chamber and the chilling chamber;

a variable temperature storage formed in the chilling chamber;

a heating room formed on a side of the variable temperature storage;

a heating device installed in the heating room and configured to generate heat;

a first local circulating path through which cool air in the freezing chamber flows into the rear path through the variable temperature storage;

an adjusting device configured to adjust a quantity of cool air flowing into/out of the variable temperature storage through the first local circulating path;

a second local circulating path in which air heated in the heating room passes through the variable temperature storage and flows into the heating room again; and

a temperature sensor configured to sense a temperature in the variable temperature storage, wherein the variable temperature storage comprises a casing installed in the refrigerator and having a rear wall and two side walls, and wherein the first local circulating path comprises a through hole formed in one of the two side walls of the casing.

2. The refrigerator of claim 1 , wherein the first local circulating path comprises:

a first path in which cool air in the freezing chamber flows into the variable temperature storage; and

a second path in which cool air in the variable temperature storage flows into the rear path.

3. The refrigerator of claim 2 , wherein the first local circulating path is formed on a partition wall that partitions a space in the refrigerator into the freezing chamber and the chilling chamber.

4. The refrigerator of claim 2 , wherein the second local circulating path is formed on a partition wall that partitions a space in the refrigerator into the freezing chamber and the chilling chamber.

5. The refrigerator of claim 1 , wherein the second local circulating path comprises:

a third path in which air in the variable temperature storage flows into the heating room; and

a fourth path in which air heated in the heating room flows into the variable temperature storage.

6. The refrigerator of claim 5 , further comprising a sub fan configured to circulate air installed on the fourth path.

7. The refrigerator of claim 1 , wherein the variable temperature storage further comprises a drawer detachably inserted into the casing, and wherein the heating room is formed by a sealed casing sharing a side wall of the casing, and paths are formed both in the casing and the sealed casing.

8. The refrigerator of claim 7 , wherein the casing and the sealed casing are formed of heat-insulating materials.

9. The refrigerator of claim 7 , wherein the drawer comprises a front portion configured to cover a front of the casing and a storing portion extended from the front portion and configured to store food therein, and wherein a height of the storing portion is less than a height of the front portion.

10. The refrigerator of claim 1 , wherein the adjusting device comprises:

a second damper installed on the first local circulating path and configured to adjust a quantity of cool air flowing through the first local circulating path;

a sub fan installed on the first local circulating path and configured to create air flow; and

a check valve installed on the second local circulating path and configured to open and close the second local circulating path.

11. The refrigerator of claim 1 , wherein the heating device is a wire heater.

12. The refrigerator of claim 1 , further comprising an ultrasonic generator configured to generate ultrasonic waves for a defrosting operation installed on an upper inner wall of the evaporator.

13. The refrigerator of claim 1 , further comprising a washing device configured to wash vegetables or fruits installed in the variable temperature storage.

14. The refrigerator of claim 13 , wherein the washing device comprises:

a water supply pipe configured to supply washing water to the variable temperature storage;

a water supply valve installed on the water supply pipe and configured to adjust a supply of washing water;

a drainage pipe connected to the variable temperature storage and configured to drain washing water;

a drainage valve installed on the drainage pipe and configured to adjust drainage; and

a vibration generator configured to vibrate washing water contained in the variable temperature storage.

15. The refrigerator of claim 14 , further comprising a drainage pump installed on the drainage pipe.

16. A refrigerator, comprising:

a refrigerator main body having a freezing chamber and a chilling chamber in which foods are stored;

a machine room in which a compressor is installed;

a rear path in which cool air generated in an evaporator flows into the freezing chamber and the chilling chamber and flows back to the evaporator;

doors respectively combined with the refrigerator main body and configured to open and close the freezing chamber and the chilling chamber;

a variable temperature storage formed in the chilling chamber;

a first path in which cool air in the freezing chamber flows into the variable temperature storage;

a second path in which cool air in the variable temperature storage flows into the rear path;

an adjusting device configured to adjust a quantity of cool air flowing into and out of the variable temperature storage; and

a temperature sensor configured to sense a temperature in the variable temperature storage, wherein the variable temperature storage comprises a casing installed in the refrigerator and having a rear wall and two side walls, and wherein the first path comprises a through hole formed in one of the two side walls of the casing.

17. The refrigerator of claim 16 , wherein the adjusting device comprises:

a sub fan installed on the first path and configured to create air flow; and

a check valve configured to open and close the second path.

18. The refrigerator of claim 17 , wherein the adjusting device further comprises a damper installed on the first path and configured to control a quantity of cool air flowing into the first path, wherein the first path is connected with the sub fan which forces cool air to flow past the evaporator.

19. A refrigerator, comprising:

a refrigerator main body having a freezing chamber and a chilling chamber in which foods are stored;

a machine room in which a compressor is installed;

a rear path in which cool air generated in an evaporator flows into the freezing chamber and the chilling chamber and flows back into the evaporator;

doors respectively combined with the refrigerator main body and configured to open and close the freezing chamber and the chilling chamber;

a variable temperature storage formed in the chilling chamber;

a heating room formed on a side of the variable temperature storage;

a heating device installed in the heating room and configured to generate heat;

a first path through which air in the variable temperature storage flows into the heating room;

a second path in which air heated in the heating room flows into the variable temperature storage;

a sub fan installed in the heating room and configured to generate air circulating flow; and

a temperature sensor configured to sense a temperature in the variable temperature storage, wherein the variable temperature storage comprises a casing having a rear and two side walls installed in the refrigerator and a drawer detachably inserted into the casing.

20. The refrigerator of claim 19 , wherein the heating device comprises a wire heater.

21. The refrigerator of claim 19 , wherein the variable temperature storage is made of a heat-insulating material.

22. A refrigerator, comprising:

a refrigerator main body having a freezing chamber and a chilling chamber in which foods are stored;

a machine room in which a compressor is installed;

a rear path in which cool air generated in an evaporator flows into the freezing chamber and the chilling chamber and flows back to the evaporator;

doors respectively combined with the refrigerator main body and configured to open and close the freezing chamber and the chilling chamber;

a variable temperature storage formed in the chilling chamber;

a heating room formed on a side of the variable temperature storage;

a heating device installed in the heating room and configured to generate heat;

a first local circulating path through which cool air in the freezing chamber flows into the rear path through the variable temperature storage;

an adjusting device configured to adjust a quantity of cool air flowing into/out of the variable temperature storage through the first local circulating path;

a second local circulating path in which air heated in the heating room passes through the variable temperature storage and flows into the heating room again; and

a temperature sensor configured to sense a temperature in the variable temperature storage, wherein the variable temperature storage is formed by a casing installed in the refrigerator and comprises a drawer detachably inserted into the casing, and wherein the heating room is formed by a sealed casing sharing a side wall of the casing, and paths are formed both in the casing and the sealed casing.

23. The refrigerator of claim 22 , wherein the casing and the sealed casing are formed of heat-insulating materials.

24. The refrigerator of claim 22 , wherein the drawer comprises a front portion configured to cover a front of the casing and a storing portion extended from the front portion and configured to store food therein, and wherein a height of the storing portion is less than a height of the front portion.

25. A refrigerator, comprising:

a refrigerator main body having a freezing chamber and a chilling chamber in which foods are stored;

a machine room in which a compressor is installed;

a rear path in which cool air generated in an evaporator flows into the freezing chamber and the chilling chamber and flows back to the evaporator;

doors respectively combined with the refrigerator main body and configured to open and close the freezing chamber and the chilling chamber;

a variable temperature storage formed in the chilling chamber;

a heating room formed on a side of the variable temperature storage;

a heating device installed in the heating room and configured to generate heat;

a first local circulating path through which cool air in the freezing chamber flows into the rear path through the variable temperature storage;

an adjusting device configured to adjust a quantity of cool air flowing into/out of the variable temperature storage through the first local circulating path;

a second local circulating path in which air heated in the heating room passes through the variable temperature storage and flows into the heating room again;

a temperature sensor configured to sense a temperature in the variable temperature storage; and

a washing device configured to wash vegetables or fruits installed in the variable temperature storage.

26. The refrigerator of claim 25 , wherein the washing device comprises:

a water supply pipe configured to supply washing water to the variable temperature storage;

a water supply valve installed on the water supply pipe and configured to adjust a supply of washing water;

a drainage pipe connected to the variable temperature storage and configured to drain washing water;

a drainage valve installed on the drainage pipe and configured to adjust drainage; and

a vibration generator configured to vibrate washing water contained in the variable temperature storage.

27. The refrigerator of claim 26 , further comprising a drainage pump installed on the drainage pipe.