On-off thermostat based modulating air flow controller
First Claim
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1. A system for providing modulated air flow control in response to an on-off thermostat comprising:
- an on-off thermostat;
a self-returning, slow moving motor connected to said thermostat for moving in a first direction when said thermostat is on and in a second direction when said thermostat is off;
damper motor means, separate from said self-returning, slow moving motor, adapted to drive a damper for controlling said air flow; and
,controller means responsive to said self returning, slow moving motor and connected to said damper motor means for controlling said damper motor means to modulate said air flow in response to said on-off thermostat.
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Abstract
A system for providing modulated air flow control in response to an on-off thermostat having an on-off thermostat, a self-returning, slow moving motor connected to the thermostat for moving in a first direction when the thermostat is on and moving in a second direction when the thermostat is off, a damper motor adapted to drive a damper, and a controller driven by the self-returning, slow moving motor and connected to the damper motor for modulating air flow in response to the on-off thermostat.
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Citations
18 Claims
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1. A system for providing modulated air flow control in response to an on-off thermostat comprising:
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an on-off thermostat; a self-returning, slow moving motor connected to said thermostat for moving in a first direction when said thermostat is on and in a second direction when said thermostat is off; damper motor means, separate from said self-returning, slow moving motor, adapted to drive a damper for controlling said air flow; and
,controller means responsive to said self returning, slow moving motor and connected to said damper motor means for controlling said damper motor means to modulate said air flow in response to said on-off thermostat. - View Dependent Claims (2, 3, 4)
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5. A system for providing modulated air flow control in response to an on-off thermostat comprising:
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an on-off thermostat; a self-returning, slow moving motor connected to said thermostat for moving in a first direction when said thermostat is on and in a second direction when said thermostat is off; damper motor means, separate from said self-returning, slow moving motor, adapted to drive a damper; air flow sensing means for sensing said air flow; and
,controller means driven by said self-returning slow moving motor and connected to said damper motor means for controlling said damper motor means to drive said damper in a first direction when said self-returning, slow moving motor has moved a first sufficient amount in its first direction and to drive said damper in a second direction when said self-returning, slow moving motor has moved a second sufficient amount in its second direction to modulate said air flow in response to said on-off thermostat, said controller means also being responsive to said air flow sensor means for rebalancing said controller means in responses to changes in air flow resulting from movement of said damper motor means, said sufficient amounts being dependent upon said air flow sensor. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 18)
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14. A system for providing modulated air flow control in response to an on-off thermostat comprising:
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an on-off thermostat; a self-returning, slow moving motor connected to said thermostat for being driven in a first direction when said thermostat is closed and in a second direction when said thermostat is open; a cam driven by said self-returning, slow moving motor for moving in a first direction when said motor moves in said first direction and for moving in a second direction when said self-returning, slow moving motor moves in said second direction; a switch having a movable contact driven by a cam follower which moves in response to movement of said cam and first and second stationary contacts; damper motor means connected to said first and second stationary contacts and to said movable contact for driving said damper in a first direction when said movable contact contacts said first stationary contact and for driving in a second direction when said movable contact contacts said second stationary contact, said damper motor means controlling said damper for modulating said air flow in response to said on-off thermostat; and
,air flow sensing means responsive to said air flow for providing a rebalancing force to said movable contact of said switch. - View Dependent Claims (15, 16, 17)
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Specification