Air conditioning system

Claim 2

In combination with a thin-line air conditioner having a blower, a compressor, an opening between said blower and compressor for receiving a return air filter and having an access opening adjacent to said blower closed by an access panel, an attachment comprising in combination: a hollow housing including a return air inlet, an outlet for connection with the air conditioner unit, a fresh air inlet, and an exhaust opening; impermeable means for closing said first mentioned opening; means for pivotally connecting said housing to the air conditioner with said outlet adjacent to said access opening in place of the access panel; control valve means pivotal in said housing from a first position wherein said fresh air inlet is in communication with said outlet to a second position wherein said return air inlet is in communication with said outlet and through an infinite number of intermediate positions wherein fresh air entering said fresh air inlet is mixed with return air before passing through said outlet; and control means for varying the position of said control valve means in response to a preselected signal to obtain only return air, to another signal to obtain only fresh air, and to other signals to obtain a mixture of fresh and return air at the outlet.

Claim 3

The attachment of claim 1 and also including sensing means connected with said control means for generating said signals and transmitting said signals to said control means.

Claim 4

The attachment of claim 2 wherein said sensing means generates signals related to ambient temperture.

Claim 5

The attachment of claim 3 wherein said control means includes: a motor having a shaft movable in response to said signals; and means connecting said shaft with said control valve means.

Claim 6

The attachment of claim 4 and also including a filter removably located in said housing and extending across said outlet.

Claim 7

In combination with a thin-line air conditioner having a blower, a compressor, an opening between said blower and compressor for receiving an air filter and having an access opening adjacent to said blower closed by an access panel, an attachment comprising in combination: a hollow housing including a return air inlet, an outlet for connection with the air conditioner unit, a first edge and a second edge adjacent to said outlet, a fresh air inlet, and an exhaust opening; a filter removably located in said housing and extending across said outlet; impermeable means for closing said first mentioned opening; means for pivotally connecting said housing to the air conditioner with said outlet adjacent to said access opening in place of the access panel, said means including a releaseable fastener connecting said first edge to said air conditioner and pivot means connecting said second edge to said air conditioner; control valve means pivotal in said housing from a first position wherein said fresh air inlet is in communication with said outlet to a second position wherein said return air inlet is in communication with said outlet and through an infinite number of intermediate positions wherein fresh air entering said fresh air inlet is mixed with return air before passing through said outlet; control means for varying the position of said control valve means in response to a preselected signal to obtain only return air, to another signal to obtain only fresh air, and to another signal to obtain a mixture of fresh and return air at the outlet, said control means inlcuding a motor having a shaft movable in response to said signals and means for connecting said shaft with said control valve means; and, sensing means connected with said control means for generating said signals and transmitting said signals to said control means and wherein said signals and the position of said valve means are related to ambient temperature.

Claim 8

In combination with a thin-line air conditioner having a blower, a compressor, an opening between said blower and compressor for receiving an air filter and having an access opening adjacent to said blower closed by an access panel, an attachment comprising in combination: a hollow housing including a return air inlet, an outlet for connection with the air conditioner unit, a first edge and a second edge adjacent to said outlet, a fresh air inlet, and an exhaust opening; a filter removably located in said housing and extending across said outlet; impermeable means for closing said first mentioned opening; means for pivotally connecting said housing to the air conditioner with said outlet adjacent to said access opening in place of the access panel, said means including a releaseable fastener connecting said first edge to said air conditioner and pivot means connecting said second edge to said air conditioner; control valve means pivotal in said housing from a first position wherein said fresh air inlet is in communication with said outlet to a second position wherein said return air inlet is in communication with said outlet and through an infinite number of intermediate positions wherein fresh air entering said fresh air inlet is mixed with return air before passing through said outlet; control means for varying the position of said control valve means in response to a preselected signal to obtain only return air, to another signal to obtain only fresh air, and to another signal to obtain a mixture of fresh and return air at the outlet, said control means inlcuding a motor having a shaft movable in response to said signals and means for connecting said shaft with said control valve means; and, sensing means connected with said control means for generating said signals and transmitting said signals to said control means and wherein said signals and the position of said valve means are related to ambient temperature.