1. Field of the Invention
The present invention relates to a refrigerator, and particularly, to a refrigerator including a hot line and a plurality of capillary tubes between a condenser and an evaporator.
2. Description of Related Art
In general, a refrigerator is an apparatus that keeps a storage compartment, such as a refrigerating compartment or a freezing compartment, at a low temperature by using a cooling cycle of a coolant, which consists of a compressor, a condenser, an expander, and an evaporator.
A refrigerator may include a main body that includes a storage compartment, such as a freezing compartment and a refrigerating compartment, and a door connected to the main body to open and close the storage compartment.
A difference in temperature occurs between the inside and outside of the refrigerator. In case the outside is left in a high-temperature, humid environment, water drops may be created on a portion of the main body, which contacts the door. This happens when room-temperature internal air transfers heat to low-temperature cold air so that the temperature of the low-temperature cold air goes up, thereby reaching the dew point. Water drops are mainly created on a region where the door contacts the main body due to a difference in temperature between the inside and outside of the refrigerator when the door is open.
In case a hot line is provided at the main body to be connected with the condenser, the refrigerator may remove water drops by making a coolant pass through the hot line.
In conventional refrigerators, a coolant which has passed through a hot line flows through one evaporator via only one expander. So, it is difficult to secure the optimum coolant circulation amount depending on load.