Offset Window Mount Evaporative Cooler

Abstract

An offset window mount fan unit includes two or more independently controlled fans controllable to move air in the same direction or in opposite directions. A housing substantially offsets the fans from a direct passage of air into the room. In one embodiment, the fans are mounted in a housing perpendicular to the window, air traveling through the fans turning 90 degrees to pass through the plane of the window and 90 degrees down into the room. Each fan includes a temperature sensor to measure temperature of air moving through each fan. The fans are energized periodically for a short time period to make accurate temperature measurements. When the combined temperature measurements indicate an advantage from fan operation, the fans are activated. An evaporative cooling section may be attached to an outside portion of the unit to provide additional cooling.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]The present application is a Continuation In Part of U.S. patent application Ser. No. 16 / 036,266 filed Jul. 16, 2018, and a Continuation In Part of U.S. patent application Ser. No. 16 / 0417,122 filed May 20, 2019 which applications are incorporated in their entirety herein by reference.BACKGROUND OF THE INVENTION[0002]The present invention relates to room temperature control and in particular to wall mounted fans.[0003]Wall mounted fans are often used to provide cool outside air to a room when cooling is desired, or warm outside air to a room when heating is desired. The fans generally compare room temperature to a temperature setting, and activate the fan when the room temperature exceeds the setting for cooling and activate the fan when room temperature is less than the setting for heating. In many instances, the fan is operated when outside air is above the inside air temperature when cooling is desired or below the inside air temperatu...

AI Technical Summary

Benefits of technology

The present invention is a fan unit that can be mounted off a window, allowing air to flow in the opposite direction. The fan unit has independent control of two or more fans, which can move air in the same or opposite directions. The fan unit includes a housing that offsets the fans from the window, and each fan has a temperature sensor to measure the air's temperature. The fans are activated periodically to measure temperature and are only on for a short time period to minimize energy consumption. Evaporative cooling can also be added to the fan unit. The invention helps improve air flow and cooling without blocking the window.

Problems solved by technology

In many instances, the fan is operated when outside air is above the inside air temperature when cooling is desired or below the inside air temperature when heating is desired, providing an undesirable result.

Further, window fans are generally thin and have very little resistance to air passing through the fan when the fan is not on.

On a windy day, either hot or cold outside air may enter the room creating an undesired result.

U.S. patent application Ser. No. 16 / 036,266 filed Jul. 16, 2018, and U.S. patent application Ser. No. 16 / 0417,122 filed May 20, 2019 disclose an improved window fan to circulate outside air into a room, but do not provide cooling for the outside air.

In some instances, merely circulating outside air does little to improve comfort inside a room.

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