Tandem compressor discharge pressure and temperature control logic
First Claim
1. A heating, ventilation, and air-conditioning (HVAC) system, comprising:
- a plurality of sensors;
a tandem compressor comprising a first compressor and a second compressor, the tandem compressor operable to compress a refrigerant, the tandem compressor associated with the plurality of sensors;
a controller communicatively coupled to the plurality of sensors and the tandem compressor, the controller operable to;
determine a first interruption of power to the tandem compressor at a first time, the first interruption of power resulting in the first compressor and the second compressing being off;
in response to determining a first interruption of power to the tandem compressor, turn on the first compressor of the tandem compressor at a second time, keeping the second compressor off the second time being after the first time;
monitor whether power to the tandem compressor is interrupted;
determine a second interruption of power at a third time, the third time being after the second time;
in response to determining the second interruption of power at the third time, determine that the first interruption of power was caused at least in part by the refrigerant associated with the first compressor exceeding a tolerance condition;
turn off the first compressor of the tandem compressor at a fourth time, the fourth time being after the third time;
based on a temperature demand, determine that the second compressor of the tandem compressor be turned on; and
turn on the second compressor of the tandem compressor.
1 Assignment
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Accused Products
Abstract
An HVAC system, comprising a plurality of sensors, a tandem compressor comprising a first compressor and a second compressor, and a controller communicatively coupled to the plurality of sensors and the tandem compressor. The controller may determine a first interruption of power to the tandem compressor and identify a sensor corresponding to the first interruption of power. The controller is further operable to determine that the first interruption of power was caused at least in part by the refrigerant associated with the first compressor exceeding a tolerance condition. The controller may also reconfigure the tandem compressor, wherein on or off settings of the first compressor and the second compressor are determined based on a required load operation of the tandem compressor and the determination that the first interruption of power was caused at least in part by the refrigerant associated with the first compressor exceeding the tolerance condition.
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Citations
20 Claims
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1. A heating, ventilation, and air-conditioning (HVAC) system, comprising:
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a plurality of sensors; a tandem compressor comprising a first compressor and a second compressor, the tandem compressor operable to compress a refrigerant, the tandem compressor associated with the plurality of sensors; a controller communicatively coupled to the plurality of sensors and the tandem compressor, the controller operable to; determine a first interruption of power to the tandem compressor at a first time, the first interruption of power resulting in the first compressor and the second compressing being off; in response to determining a first interruption of power to the tandem compressor, turn on the first compressor of the tandem compressor at a second time, keeping the second compressor off the second time being after the first time; monitor whether power to the tandem compressor is interrupted; determine a second interruption of power at a third time, the third time being after the second time; in response to determining the second interruption of power at the third time, determine that the first interruption of power was caused at least in part by the refrigerant associated with the first compressor exceeding a tolerance condition; turn off the first compressor of the tandem compressor at a fourth time, the fourth time being after the third time; based on a temperature demand, determine that the second compressor of the tandem compressor be turned on; and turn on the second compressor of the tandem compressor. - View Dependent Claims (2, 3, 4, 5, 6, 18)
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7. A controller for operating a heating, ventilation, and air-conditioning (HVAC) system, comprising:
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a memory; and a processor communicatively coupled to the memory, the processor operable to; determine a first interruption of power to a tandem compressor at a first time, the first interruption of power resulting in the first compressor and the second compressing being off, the tandem compressor comprising a first compressor and a second compressor, the tandem compressor operable to compress a refrigerant, the tandem compressor associated with a plurality of sensors; in response to determining a first interruption of power to the tandem compressor, turn on the first compressor of the tandem compressor at a second time, keeping the second compressor off, the second time being after the first time; monitor whether power to the tandem compressor is interrupted; determine a second interruption of power at a third time, the third time being after the second time; in response to determining the second interruption of power at the third time determine that the first interruption of power was caused at least in part by the refrigerant associated with the first compressor exceeding a tolerance condition; turn off the first compressor of the tandem compressor at a fourth time, the fourth time being after the third time; based on a temperature demand, determine that the second compressor of the tandem compressor be turned on; and turn on the second compressor of the tandem compressor. - View Dependent Claims (8, 9, 10, 11, 12, 19)
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13. A non-transitory computer readable storage medium comprising instructions, the instructions, when executed by a processor, executable to:
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determine a first interruption of power to a tandem compressor at a first time, the first interruption of power resulting in the first compressor and the second compressing being off, the tandem compressor comprising a first compressor and a second compressor, the tandem compressor operable to compress a refrigerant, the tandem compressor associated with a plurality of sensors; in response to determining a first interruption of power to the tandem compressor, turn on the first compressor of the tandem compressor at a second time, keeping the second compressor off, the second time being after the first time; monitor whether power to the tandem compressor is interrupted; determine a second interruption of power at a third time, the third time being after the second time; in response to determining the second interruption of power at the third time, determine that the first interruption of power was caused at least in part by the refrigerant associated with the first compressor exceeding a tolerance condition; turn off the first compressor of the tandem compressor at a fourth time, the fourth time being after the third time; based on a temperature demand, determine that the second compressor of the tandem compressor be turned on; and turn on the second compressor of the tandem compressor. - View Dependent Claims (14, 15, 16, 17, 20)
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Specification