Mainstream Engineering Corporation

Mianstream Engineering Corporation

Luke L Falls

Robert P Scaringe

Dana L Elliott

Andrew L Carpenter

David C Hahn

Janelle M Messmer

Mark W Fitz

Dana L Elliot

An anti-clogging liquid dispersion system and method for an air conditioner or heat pump is disclosed. A tank holds an anti-clogging liquid. A pump or valve connected with the tank periodically supplies the liquid to a condensate drain pan or the outlet of an existing drain line located exteriorly of a structure. One or more sensors are provided to detect moisture, flooding and/or lack of condensate flow and, when so detected, a control circuit causes the liquid to be supplied to the condensate drain pan to prevent flooding of a condensate drain pan or to clear a clogged drain line of an air handler of the air conditioner or heat pump. An additional dose of the liquid can also be supplied at any time when an unacceptable amount of condensate moisture and/or a clogged drain line has been detected.

System and method for preventing condensate drain pan flooding, detecting condensate water overflow and shutting off an air conditioner or heat pump to prevent further flooding

A device and method are provided to allow replacement of costlier motors with a retrofittable control board and a lower cost motors operating a several speeds to provide variable (but not continuously variable) blower airflow. The control signals normally used to command the motor being replaced are only used to detect the need to activate the blower motor; once detected, the control board activates the replacement blower motor by energizing a blower motor speed tap with the evaporator blower initially set to a high speed. Then the blower speed is lowered if a predetermined negligibly small, acceptable change in evaporator temperature has occurred. Given the number of speed taps on the replacement blower motor, the evaporator blower speed is continued to be reduced from the initially set high speed as long as there is only an acceptably small change in the measured evaporator temperature.

Simple low-cost retrofit device and method to replace a variable air flow electronically commutated motor with a permanent split capacitor motor capable of operating at multiple speed settings

A system and method are provided to allow the replacement of a costly electrically commutated blower or fan motor with a less efficient motor such as a permanent split capacitor motor operating at a predetermined speed, without regard to the specific electrically commutated motor command signals or programming being used by the original equipment manufacturer. A retrofittable control board is employed to activate the replacement motor by energizing the replacement blower motor when an electrically commutated blower motor command signal is observed on any one of the signal lines which are continuously monitored simultaneously.

Elegantly simple low-cost retrofit method and system for replacing a constant torque electronically commutated motor with a fix-speed permanent split capacitor motor

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Orlando, FL, United States of America

Luke L Falls