Patent ID: 11898769
Assignee: JOHNSON CONTROLS TYCO IP HOLDINGS LLP
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 14:
15. A heating, ventilation, and air conditioning (HVAC) system, comprising:
a condenser;
a fan deck coupled to the condenser to define a chamber between the condenser and the fan deck, wherein the fan deck comprises a first passage and a second passage formed therein;
a first condenser fan comprising a first motor coupled to the first condenser fan via a first shaft, wherein the first motor is configured to drive rotation of the first condenser fan via the first shaft to draw a first air flow across the condenser and discharge the first air flow from the chamber via the first passage;
a second condenser fan comprising a second motor, wherein the second motor is configured to drive rotation of the second condenser fan to draw a second air flow across the condenser and discharge the second air flow from the chamber via the second passage;
a fan rotation restrictor comprising an actuator and a plunger, wherein the actuator is configured to adjust a position of the plunger relative to the first shaft to engage and disengage the plunger with the first shaft to selectively block and enable rotation of the first condenser fan; and
a controller communicatively coupled to the fan rotation restrictor and to the second motor, wherein the controller is configured to:
control operation of the fan rotation restrictor to adjust the position of the plunger to engage the plunger with the first shaft; and
control the second motor to drive rotation of the second condenser fan while the plunger is engaged with the first shaft.