WORK VEHICLE HVAC CONTROL BASED ON OPERATOR SEAT DIRECTION
First Claim
1. In a work vehicle having a seat that rotates between a first operational position and a second operational position, and further having an HVAC system having at least a first duct for directing air at a first area and a second duct for directing air at a second area distinct from the first area, a control system comprising:
- a first door that prevents air from flowing through the first duct in a closed position and allows air to flow through the first duct in an open position;
a first actuator for moving the first door between at least the closed and open positions;
a detector for detecting whether the seat is in at least one of the first and second operational positions and generating a position output signal based on the detected operational position; and
a control module for driving the first actuator according to the position output signal of the detector.
1 Assignment
0 Petitions
Accused Products
Abstract
An HVAC control system for directing the flow of air in a work vehicle'"'"'s HVAC system responds to the orientation of a rotating seat within the work vehicle'"'"'s cabin. The seat may rotate between at least two operational positions, such that the operator of the work vehicle may control a forward or a rearward implement. The HVAC control system includes one or more detectors for detecting the position of the seat. A control module receives output from the detectors and allows or prevents the flow of air through particular ducts in the HVAC system based on the seat'"'"'s position. The control module may actuate one or more doors to open and close ducts as needed. The control module may operate a first door to open or close forward ducts and a second door to open or close rearward ducts depending on whether the seat is facing forward or rearward.
28 Citations
20 Claims
-
1. In a work vehicle having a seat that rotates between a first operational position and a second operational position, and further having an HVAC system having at least a first duct for directing air at a first area and a second duct for directing air at a second area distinct from the first area, a control system comprising:
-
a first door that prevents air from flowing through the first duct in a closed position and allows air to flow through the first duct in an open position; a first actuator for moving the first door between at least the closed and open positions; a detector for detecting whether the seat is in at least one of the first and second operational positions and generating a position output signal based on the detected operational position; and a control module for driving the first actuator according to the position output signal of the detector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. In a work vehicle having a cabin in which is disposed a seat assembly having a rotating seat, and further having an HVAC system with at least a first duct for delivering air through at least one vent to a first area of the cabin and a second duct for delivering air through at least one vent to a second area of the cabin distinct from the first area, an HVAC control system comprising:
-
a door disposed in each duct and configured to move between a fully open position, allowing maximum flux of air into the duct, and a fully closed position that completely occludes the duct; a control module operatively coupled to each door to move the door between at least the fully open and fully closed positions; a marker configured to rotate with the seat; and at least one detector for detecting whether the seat is in a first operational position or a second operational position, the detector being electrically coupled to the control module for transmitting, to the control module, a position output signal indicating a position of the seat; wherein the control module moves the door of each duct according to the position output signal. - View Dependent Claims (12, 13, 14, 15)
-
-
16. In a work vehicle having a cabin in which is disposed a seat assembly having a rotating seat, and further having an HVAC system with a forward duct for delivering air through at least one vent to a front area of the cabin and a rearward duct for delivering air through at least one vent to a rear area of the cabin, an HVAC control system comprising:
-
a marker attached to a rotating structure within the seat assembly, the seat being mounted on the rotating structure; at least one detector attached to a stationary structure within the seat assembly that does not rotate with the seat, the detector being configured to detect a position of the marker and generate a position output signal that indicates the position of the seat; a first mode door assembly attached to the forward duct and comprising; a housing attached to the forward duct; a first mode door movably mounted within the housing; and an actuator attached to the housing and the first mode door for moving the first mode door between an open position that allows air into the forward duct and a closed position that occludes the forward duct; a second mode door assembly attached to the rearward duct and comprising; a housing attached to the rearward duct; a second mode door movably mounted within the housing; and an actuator attached to the housing and the second mode door for moving the second mode door between an open position that allows air into the rearward duct and a closed position that occludes the rearward duct; and a control module electrically connected to the detector for receiving the position output signal, and electrically connected to each of the first and second actuators to drive the actuators to move each of the first and second mode doors in response to the position output signal; wherein the position of the seat may comprise a first operational position or a second operational position. - View Dependent Claims (17, 18, 19, 20)
-
Specification