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US 3,939,868 AGranted
Adjustable air volume regulator for air-conditioning systems
AssigneeAeronca, Inc.
InventorHillard Glenn Logsdon
Life of this patent
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AssigneeAeronca, Inc.
InventorHillard Glenn Logsdon
Estimating the term…
An air volume regulator adapted for use in an air distribution system for maintaining a constant flow of air therethrough regardless of variations in pressure of the air being supplied to the regulator is provided with adjustment means to permit adjusting the regulator for maintaining constant flow at a variety of different flow rates. The regulator includes a housing defining a passageway for the flow of air therethrough, valve means movable within the housing for adjustably restricting the flow of air therethrough, and a coil compression spring cooperating with the valve means for exerting an opening bias thereon in opposition to a closing bias imparted on the valve means by the pressure of the air in the housing. Adjustment means is provided cooperating with the coil spring for immobilizing a selected number of the turns of the coil spring so as to vary the biasing characteristics of the spring and thereby adjust the regulator for maintaining a different flow rate.
In an air volume regulator comprising a housing defining a passageway for the flow of air therethrough, valve means mounted for movement in said housing for adjustably restricting the air flow therethrough, and a coil compression spring cooperating with said valve means for exerting an opening bias on the valve means in opposition to a closing bias exerted thereon by the pressure of the air in the housing whereby said valve means is adapted for maintaining the air flow through the housing at a substantially constant rate, the combination therewith of spring adjustment means carried by said housing and positioned alongside of said coil spring and including means normally positioned out of engagement with said coil spring but movable into said spring from opposite sides thereof between a plurality of the turns of the spring for varying the number of working turns in the coil spring so as to thereby adjust the regulator to maintain a different rate of air flow therethrough.
In an air volume regulator comprising a housing defining a passageway for the flow of air therethrough, valve means mounted for movement in said housing for adjustably restricting the air flow therethrough, and a coil compression spring cooperating with said valve means for exerting an opening bias on the valve means in opposition to a closing bias exerted thereon by the pressure of the air in the housing whereby said valve means is adapted for maintaining the air flow through the housing at a substantially constant rate, the combination therewith of sensing means for sensing a demand for an increased or decreased flow of air through the regulator, spring adjustment means positioned alongside said coil compression spring and being movable into and between the turns thereof for progressively immobilizing a selected number of the turns upon movement of the spring adjustment means into the spring for thereby varying the number of working turns in the coil spring so as to vary the biasing characteristics of the spring, and motive means operably connected to said sensing means and to said spring adjustment means and operable for effecting movement of the spring adjustment means in response to a sensed demand for an increased or decreased flow of air through the regulator so as to vary the biasing characteristics of the spring and thereby adjust the regulator to maintain a different rate of air flow therethrough.
In an air volume regulator comprising a housing defining a passageway for the flow of air therethrough, valve means mounted for movement in said housing for adjustably restricting the air flow therethrough, and a coil compression spring cooperating with said valve means for exerting an opening bias on the valve means in opposition to a closing bias exerted thereon by the pressure of the air in the housing whereby said valve means is adapted for maintaining the air flow through the housing at a substantially constant rate, the combination therewith of means for adjusting the regulator to maintain a different flow rate and comprising means defining a plurality of spaced abutment shoulders normally positioned alongside of said coil spring, and means cooperating with said plurality of abutment shoulders for successively positioning the abutment shoulders between the turns of said spring for immobilizing a selected number of the turns of the spring and thereby varying the biasing characteristics of the spring.
In an air volume regulator comprising a housing defining a passageway for the flow of air therethrough, valve means mounted for movement in said housing for adjustably restricting the air flow therethrough, and a coil compression spring cooperating with said valve means for exerting an opening bias on the valve means in opposition to a closing bias exerted thereon by the pressure of the air in the housing whereby said valve means is adapted for maintaining the air flow through the housing at a substantially constant rate, the combination therewith of means for adjusting the regulator to maintain a different flow rate and comprising means defining two opposing series of spaced abutment shoulders normally positioned adjacent opposite sides of said coil spring, and means cooperating with said two series of abutment shoulders for successively positioning the abutment shoulders of each series into opposite sides of said coil spring between the turns thereof beginning adjacent one end of the spring and progressively along the length thereof toward the opposite end of the spring, said abutment shoulders being thereby adapted to immobilize a selected number of the turns of the spring so as to vary the biasing characteristics of the spring.
Dependencies are inferred from the claim text.