Uniform HVAC comfort across multiple systems
AssigneeLennox Industries Inc.
InventorsDaniel Castillo, Sunil Khiani
Life of this patent
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Abstract
Various embodiments provide an HVAC system that includes first and second controllers. The first controller is configured to control a first demand unit to maintain a setpoint temperature of a first portion of a conditioned space. A second HVAC controller is configured to control a second demand unit to maintain a setpoint temperature of a second portion of the conditioned space. The control provided by the second controller is dependent on a load metric of the first demand unit.
Claims21
A heating, ventilation and air conditioning (HVAC) system, comprising:
- a first HVAC controller configured to control a first demand unit to maintain a setpoint temperature of a first portion of a conditioned space;
- and
- a second HVAC controller configured to control a second demand unit to maintain a setpoint temperature of a second portion of said conditioned space;
- wherein said first HVAC controller is configured to:
- determine a difference between a duty cycle of the first demand unit and a duty cycle of the second demand unit, the difference determined based on load metrics of said first and second demand units;
- and
- adjust the setpoint temperature of the first portion of the conditioned space such that operating the first demand unit to maintain the adjusted setpoint temperature reduces the difference between the duty cycle of the first demand unit and the duty cycle of the second demand unit.
A heating, ventilation and air conditioning system controller, comprising:
- a processor;
- a memory containing operating instructions for said processor;
- a control module of said instructions configured to control operation of a first demand unit;
- and
- a coordination module of said instructions configured to:
- modify said control operation based on a load metric of a second demand unit, the load metric of the second demand unit comprising an indication of a duty cycle of the second demand unit;
- determine, using the load metric of the second demand unit, a difference between a duty cycle of the first demand unit and the duty cycle of the second demand unit;
- and
- adjust a setpoint temperature such that operating the first demand unit to maintain the setpoint temperature reduces the difference between the duty cycle of the first demand unit and the duty cycle of the second demand unit.
A method of manufacturing a heating, ventilation and air conditioning (HVAC) system, comprising:
- providing a first HVAC controller configured to control a first demand unit to maintain a setpoint temperature of a first portion of a conditioned space;
- and
- providing a second HVAC controller configured to control a second demand unit to maintain a setpoint temperature of a second portion of said conditioned space;
- wherein said first HVAC controller is configured to:
- determine a difference between a duty cycle of the first demand unit and a duty cycle of the second demand unit, the difference determined based on load metrics of said first and second demand units;
- and
- adjust the setpoint temperature of the first portion of the conditioned space such that operating the first demand unit to maintain the adjusted setpoint temperature reduces the difference between the duty cycle of the first demand unit and the duty cycle of the second demand unit.
Dependencies are inferred from the claim text.