Refrigerator

1. A refrigerator comprising:

a cabinet in which a storage chamber is formed;

a cooler to cool the storage chamber;

a heater to heat the storage chamber;

a temperature sensor to sense a storage chamber temperature; and

a controller configured to control the cooler and the heater,

wherein the controller is configured to selectively perform a plurality of modes,

wherein the plurality of modes include:

a cooling mode in which the cooler is operated or stopped,

a heating mode in which the heater is operated or stopped, and

a standby mode in which the cooler and the heater are stopped, and

wherein the plurality of modes are performed in the order of the cooling mode, the standby mode, and heating mode, or are performed in the order of the heating mode, the standby mode, and the cooling mode.

2. The refrigerator of claim 1 ,

wherein, in the cooling mode, the cooler is operated when the storage chamber temperature sensed by the temperature sensor exceeds a target temperature upper limit value and is stopped when the storage chamber temperature is lower than a target temperature lower limit value, and

wherein, in the heating mode, the heater is stopped when the storage chamber temperature exceeds the target temperature upper limit value and is operated when the storage chamber temperature is lower than the target temperature lower limit value.

3. The refrigerator of claim 2 ,

wherein, in the standby mode, the storage chamber temperature is between the target temperature lower limit value and a lower limit temperature, or between the target temperature upper limit value and an upper limit temperature,

wherein the lower limit temperature is a temperature lower than the target temperature lower limit value, and

wherein the upper limit temperature is a temperature higher than the target temperature upper limit value.

4. The refrigerator of claim 3 ,

wherein, after the cooling mode is ended, when a time in which the storage chamber temperature is between the target temperature lower limit value and the lower limit temperature is equal to or greater than a first set time, the controller is configured to switch from the standby mode to the heating mode.

5. The refrigerator of claim 4 ,

wherein, after the cooling mode is ended, when a time in which the storage chamber temperature is lower than the lower limit temperature is equal to or greater than a second set time, the controller is configured to switch from the standby mode to the heating mode.

6. The refrigerator of claim 5 ,

wherein the second set time is shorter than the first set time.

7. The refrigerator of claim 3 ,

wherein, after the heating mode is ended, when a time in which the storage chamber temperature is between the target temperature upper limit value and the upper limit temperature is equal to or greater than a first set time, the controller is configured to switch from the standby mode to the cooling mode.

8. The refrigerator of claim 7 ,

wherein, after the heating mode is ended, when a time in which the storage chamber temperature exceeds the upper limit temperature is equal to or greater than a second set time, the controller is configured to switch from the standby mode to the cooling mode.

9. The refrigerator of claim 8 ,

wherein the second set time is shorter than the first set time.

10. The refrigerator of claim 1 , further comprising:

a timer; and

an input unit to receive an input of a target temperature,

wherein the controller is configured to selectively perform the plurality of modes according to the input received by the input unit, a value of the timer, and the storage chamber temperature sensed by the temperature sensor.

11. The refrigerator of claim 1 , further comprising:

an airflow forming mechanism to flow air in the storage chamber,

wherein the controller is configured to operate the airflow forming mechanism in the cooling mode.

12. The refrigerator of claim 1 , further comprising:

an airflow forming mechanism to flow air in the storage chamber,

wherein the controller is configured to stop the airflow forming mechanism from operating in the standby mode.

13. The refrigerator of claim 1 , further comprising:

an airflow forming mechanism to flow air in the storage chamber,

wherein the controller is configured to the airflow forming mechanism in the heating mode.

14. The refrigerator of claim 1 ,

wherein the cabinet includes an inner case in which the storage chamber is formed,

further comprising:

an inner guide to partition the storage chamber into a storage space and an air flow path disposed inside the inner case, and

an airflow forming mechanism including a circulation fan which is disposed in the inner case or the inner guide to circulate air in the storage space.

15. The refrigerator of claim 1 ,

wherein the cabinet includes an inner case in which the storage chamber is formed,

an inner guide to partition the storage chamber into a storage space and an air flow path disposed in the inner case,

a partition member which partitions the storage space into a first space and a second space disposed in the storage space, and

wherein the heater is a plurality of heaters provided for each of the first space and the second space.

16. The refrigerator of claim 1 ,

wherein the cabinet includes an inner case in which the storage chamber is formed,

further comprising an inner guide which faces a rear body of the inner case, and

the heater includes a side heating device installed on a side body of the inner case.

17. The refrigerator of claim 16 , further comprising

a partition member which partitions the storage space into a first space and a second space disposed in the storage space,

wherein the heater includes an inner heating device disposed on the partition member.

18. The refrigerator of claim 14 , further comprising

a circulation flow path partitioned from the air flow path and in communication with the storage chamber,

wherein the circulation flow path is formed so that air passing through the circulation flow path is not mixed with air passing through the air flow path while passing through the circulation flow path.

19. The refrigerator of claim 18 ,

wherein the circulation flow path is formed in the inner guide.

20. The refrigerator of claim 18 ,

wherein the airflow forming mechanism includes a first fan disposed in the air flow path to blow the air passing through the air flow path and a second fan disposed outside of the air flow path to blow the air passing through the circulation flow path.