Low lying fog simulator and method
First Claim
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1. A special effects apparatus for simulating low lying fog in an environment characterized by an ambient temperature, the apparatus to be used with a smoke generator that provides smoke to the apparatus, the apparatus comprising:
- a housing forming a chamber having a smoke inlet and an outlet, the housing connectable to the smoke generator for providing smoke through the inlet which passes through the chamber prior to passing through the outlet into the ambient;
a liquid carbon dioxide source; and
an expansion valve positioned in the chamber and connected to the source for expanding the liquid carbon dioxide into a cold gaseous carbon dioxide forming a cold gas pocket within the chamber for reducing the temperature of the smoke to a temperature below the ambient temperature prior to the smoke passing through the outlet.
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Abstract
A low lying fog simulator including a liquid carbon dioxide source and a cooler to be used with a smoke generating machine. The liquid carbon dioxide is forced through an expansion valve to provide a cold carbon dioxide gas pocket through which the smoke passes prior to being dispersed into the ambient. When dispersed into the ambient the cold smoke/carbon dioxide mixture falls toward a level near the earth'"'"'s surface simulating a low lying fog.
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Citations
21 Claims
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1. A special effects apparatus for simulating low lying fog in an environment characterized by an ambient temperature, the apparatus to be used with a smoke generator that provides smoke to the apparatus, the apparatus comprising:
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a housing forming a chamber having a smoke inlet and an outlet, the housing connectable to the smoke generator for providing smoke through the inlet which passes through the chamber prior to passing through the outlet into the ambient; a liquid carbon dioxide source; and an expansion valve positioned in the chamber and connected to the source for expanding the liquid carbon dioxide into a cold gaseous carbon dioxide forming a cold gas pocket within the chamber for reducing the temperature of the smoke to a temperature below the ambient temperature prior to the smoke passing through the outlet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A special effects method for simulating low lying fog in an environment characterized by an ambient temperature, the method to be used with a smoke generator that provides smoke and a liquid carbon dioxide source, the method comprising the steps of:
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receiving smoke from the smoke generator; expanding the liquid carbon dioxide into a cold carbon dioxide gas to form a cold gaseous pocket; passing the smoke through the cold gaseous pocket to reduce the smoke temperature to a temperature below the ambient temperature; and providing the cold smoke to the ambient. - View Dependent Claims (19, 20, 21)
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Specification