Change-over diffuser
First Claim
1. A change-over diffuser including a housing formed for coupling to air supply means and formed with outlet means for discharge of air therefrom, blade means movably mounted with respect to said housing, and blade displacement means coupled to said blade means for displacement of said blade means between a first position and a second position for control of air discharged from said outlet means, wherein the improvement in said change-over diffuser comprises:
- said blade displacement means being provided as an expansible thermal sensor-actuator element coupled to drive said blade means and being positioned inside said housing for displacement of said blade means in response to the temperature of the air supplied to said housing;
said blade means being formed for the discharge of air from said outlet means when said blade is in said first position at a first angle of discharge;
said blade means being formed for the discharge of air from said outlet means when said blade means is in said second position at a second angle of discharge angularly displaced from said first angle of discharge; and
said displacement means further includes a snap-acting assembly coupled between said thermal sensor-actuator element and said blade means and formed for snap-acting displacement of said blade means between said first position and said second position in response to expansion and contraction of said thermal sensor-actuator element upon changes of temperature in said housing.
1 Assignment
0 Petitions
Accused Products
Abstract
A thermally powered change-over diffuser is disclosed which includes a housing having an outlet and movable blade assembly mounted with respect to the outlet for displacement between a first position producing a Coanda flow across a surface, such as a ceiling, and a second position producing a detached stream in a generally normally extending direction with respect to the surface. The diffuser is preferably thermally powered and includes a rapid change-over assembly enabling substantially immediate shifting between the two positions so as to provide a cooling mode of discharge and heating mode of discharge. Additionally, means for adjusting the volume of air discharged is provided.
34 Citations
4 Claims
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1. A change-over diffuser including a housing formed for coupling to air supply means and formed with outlet means for discharge of air therefrom, blade means movably mounted with respect to said housing, and blade displacement means coupled to said blade means for displacement of said blade means between a first position and a second position for control of air discharged from said outlet means, wherein the improvement in said change-over diffuser comprises:
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said blade displacement means being provided as an expansible thermal sensor-actuator element coupled to drive said blade means and being positioned inside said housing for displacement of said blade means in response to the temperature of the air supplied to said housing; said blade means being formed for the discharge of air from said outlet means when said blade is in said first position at a first angle of discharge; said blade means being formed for the discharge of air from said outlet means when said blade means is in said second position at a second angle of discharge angularly displaced from said first angle of discharge; and said displacement means further includes a snap-acting assembly coupled between said thermal sensor-actuator element and said blade means and formed for snap-acting displacement of said blade means between said first position and said second position in response to expansion and contraction of said thermal sensor-actuator element upon changes of temperature in said housing. - View Dependent Claims (2, 3, 4)
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Specification