Refrigeration system and components thereof

A compressor system including:

• a variable capacity compressor;
• a condenser connected to the variable capacity compressor;
• a drier connected to the condenser;
• a hot-gas bypass valve;
• a heat exchanger, the hot gas bypass valve and the heat exchanger connected to the drier in parallel;
• and,
• an evaporator connected to the hot gas bypass valve and to the heat exchanger,
• where the evaporator is connected to the variable capacity compressor thereby forming a closed system in which refrigerant travels, where the compressor system selectably operates in at least a refrigeration mode and a hot-gas defrost mode, and the evaporator is defrosted by circulation of gas therethrough.

A temperature divider comprising:

• a wall;
• a partition spaced a distance from the wall, the partition having at least one metal sheet with a heat transfer substance attached thereto;
• a damper positioned in the partition;
• and,
• a heat exchange chamber defined by the wall and partition.

A multi temperature zone refrigeration system comprising:

• a cabinet with at least two different temperature cooling zones;
• a single compressor system engaged to the cabinet for cooling the at least two temperature cooling zones;
• and,
• a temperature divider positioned between and separating the at least two different temperature cooling zones, the temperature divider having a wall, a partition spaced a distance from the wall, the partition having at least one metal sheet with a heat transfer substance attached thereto, and a heat exchange chamber defined by the wall and partition.

A multi temperature zone refrigeration system comprising:

• a cabinet with at least two different temperature cooling zones;
• a cooling system engaged to the cabinet;
• and,
• a temperature divider positioned between and separating the at least two different temperature cooling zones, the temperature divider having a wall, a partition spaced a distance from the wall, the partition having at least one metal sheet with a heat transfer substance of closed cell urethane attached thereto, and a heat exchange chamber defined by the wall and partition.

A method of defrosting a variable capacity compressor cooling system with gas comprising the steps of:

• having a controller signal a hot-gas bypass valve to selectably open;
• having a variable capacity compressor compress relatively low pressure gas into a relatively high pressure gas;
• circulating the high pressure gas from the variable capacity compressor into a condenser, then into a drier, through the open hot-gas bypass valve, and into an evaporator;
• melting accumulated frost on the evaporator and thereby reducing the pressure of the gas;
• and,
• returning the relatively low pressure gas to the variable capacity compressor.