Humidifier with water valve control
AssigneeAdemco Inc.
InventorsBrad Terlson, David Quam, Christopher Goh
Life of this patent
Estimating the term…
Abstract
A call for humidity signal may activate a water valve of a humidifier to cause water to flow onto a humidifier pad within the humidifier. In some examples, a controller may activate the water valve in a pattern such that most of the water evaporates, rather than flowing to a drain system, yet still provides the requested humidity level. In some examples, the controller is configured to cause the water valve to deliver water to the humidifier pad in a water delivery pattern having a controlled period and a controlled duty cycle.
Claims20
A humidifier for adding humidity to an air stream in response to a call for humidity, the humidifier comprising:
- an air intake configured to fluidically interface with an HVAC duct;
- a humidifier pad in fluid communication with the air intake;
- a water valve for selectively delivering water from a water source to the humidifier pad;
- and
- a controller for controlling the water valve, wherein the controller is configured to cause the water valve to deliver water to the humidifier pad in a water delivery pattern having a period and a duty cycle, wherein the period/duty cycle combination is configured to achieve a humidity transfer rate from the humidifier pad to the air stream that is substantially the same as a humidity transfer rate resulting from an always-on delivery of water to the humidifier pad during the call for humidity.
A humidifier for adding humidity to an air stream of an HVAC system during a call for humidity, wherein the call for humidity has a call duration, the humidifier comprising:
- a humidifier housing;
- an air intake configured to fluidically interface with an HVAC duct of the HVAC system;
- a humidifier pad within the humidifier housing, wherein humidifier pad is in fluid communication with the air intake;
- a water valve for controlling delivery of water from a water source to the humidifier pad;
- and
- a humidifier controller within the humidifier housing and configured to receive the call for humidity signal from an HVAC controller that is external to the humidifier housing, wherein the humidifier controller is configured to send control signals to activate/deactivate the water valve such that water is delivered to the humidifier pad during the call for humidity but for less time than the call duration of the call for humidity, and
- wherein the humidifier controller is configured to cause the water valve to deliver water to the humidifier pad in a water delivery pattern having a period and a duty cycle, wherein the period/duty cycle combination is set to achieve a humidity transfer rate from the humidifier pad to the air stream that is substantially the same as a humidity transfer rate resulting from an always-on delivery of water to the humidifier pad during the call for humidity.
A humidifier for adding humidity to an air stream, the humidifier comprising:
- an air intake configured to fluidically interface with an HVAC duct;
- a humidifier pad in fluid communication with the air intake;
- a water valve for selectively delivering water from a water source to the humidifier pad;
- and
- a controller for controlling the water valve, wherein the controller is configured to:
- cause the water valve to deliver water to the humidifier pad in a water delivery pattern having at least one “on” cycle and at least one “off” cycle during a call for humidity such that:
- the at least one “on” cycle and the at least one “off” cycle combination is set to achieve a humidity transfer rate from the humidifier pad to the air stream that is substantially the same as a humidity transfer rate resulting from an always-on delivery of water to the humidifier pad during the call for humidity, and
- less than about 70% of the water delivered to the humidifier pad from the water valve drains from the humidifier pad during the call for humidity;
- and
- allow a user to program in the field one or more water delivery pattern parameters that effect the water delivery pattern.
Dependencies are inferred from the claim text.