Cooling system with stir-cycle
AssigneeHeatcraft Refrigeration Products LLC
InventorMichael Christopher Hollister
Life of this patent
Estimating the term…
Abstract
A system includes a condensing unit, a valve, and a unit cooler. The condensing unit is configured to condense refrigerant. The valve is configured to control the flow of the refrigerant from the condensing unit to the unit cooler. The unit cooler is configured to operate in a refrigeration mode and a stir-cycle mode. The unit cooler is configured to operate at a first speed during the refrigeration mode and at a second speed for a first period of time and at a third speed for a second period of time during the stir-cycle mode. The second speed is slower than the first speed and the third speed is slower than the second speed. Electric power is supplied to the unit cooler throughout the refrigeration mode and the stir-cycle mode.
Claims24
A system comprising:
- a condensing unit configured to condense refrigerant:
- a valve configured to control the flow of the refrigerant from the condensing unit to a unit cooler;
- and
- the unit cooler comprising a fan and configured to operate in a refrigeration mode and a stir-cycle mode, wherein:
- during the refrigeration mode, the fan is configured to operate at a first speed;
- during the stir-cycle mode, the fan is configured to operate at a second speed for a first period of time and at a third speed for a second period of time;
- the second speed is slower than the first speed;
- the third speed is non-zero and slower than the second speed;
- and
- electric power is supplied to the unit cooler for the entire duration of the refrigeration mode and the stir-cycle mode.
An apparatus comprising:
- a fan, and
- a motor assembly coupled to the fan and configured to:
- during a first mode, rotate the fan at a first speed during a first mode;
- during a second mode, rotate the fan at a second speed for a first period of time and at a third speed for a second period of time during a second mode;
- wherein:
- the second speed is slower than the first speed;
- the third speed is non-zero and slower than the second speed;
- and
- electric power is supplied to the motor assembly for the entire duration of the first mode and the second mode.
A method comprising:
- determining, by a processor, whether a motor should be operating in a first mode or a second mode;
- in response to a determination that the motor should be operating in the first mode, operating the motor at a first speed;
- in response to a determination that the motor should be operating in the second mode, operating the motor at a second speed for a first period of time and at a third speed for a second period of time, wherein:
- the second speed is slower than the first speed;
- the third speed is non-zero and slower than the second speed;
- and
- electric power is supplied to the motor for the entire duration of the first mode and the second mode.
Dependencies are inferred from the claim text.