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US 4,711,294 AGranted
Temperature and humidity control system
OwnerAlphonse F. Jacobs, James R. Paxtoninventors
Life of this patent
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Abstract
A system for controlling the temperature and humidity of an enclosure such as a museum display case continuously extracts air from the enclosure, increases its humidity, cools it to a controlled temperature, at which point its humidity is 100%. The air is then heated and returned to the enclosure. By selection of the controlled temperature the relative humidity of the returned air may be determined.
Claims9
Apparatus for controlling the temperature and humidity of air within an enclosed space comprising:
- (a) a thermally insulated chamber;
- (b) a water bath at the bottom of said chamber;
- (c) a partial wall extending from the top of said chamber to a point near the surface of said water bath dividing said chamber into a first side and a second side;
- (d) inlet means to conduct air from said enclosed space to the upper part of said first side of said chamber and outlet means to conduct air from the upper part of the second side of said chamber to said enclosed space;
- (e) a fan mounted part-way down said wall on said first side to induce a flow of air down said first side and under said wall and over said water bath;
- (f) means in said second side of said chamber to cool said flow of air to a predetermined temperature;
- (g) an opening in said wall above said fan permitting a first portion of said flow of air to return from the second side of the chamber to the first side of the chamber;
- (h) wherein said outlet means permits a second portion of said flow of air to return to said enclosed space;
- and
- (i) means to heat said second portion of said flow of air to a predetermined temperature.
7 more elements
Dependencies are inferred from the claim text.